阅读说明：本技术 高温固废综合回收利用解决方案 (High-temperature solid waste comprehensive recycling solution ) 是由 韩修彪 张世才 于 2020-09-01 设计创作，主要内容包括：本发明属于资源和能量回收利用技术领域,具体涉及高温固废综合回收利用解决方案。其包括热置换总成、金属分离总成和余热循环总成；热置换总成用于通过热交换萃取高温固废中的热能,并将高温固废制粒后输送至金属分离总成；金属分离总成用于通过金属分离工艺分别提取颗粒状固废物料中的磁性金属和非磁性金属并形成尾砂；余热循环总成用于收集并将热置换总成中萃取到高温固废热能的热风输送至余热回收利用设备和/或尾气处理设备,并对颗粒状固废物料携带的热能进行追踪捕集和回收处理。(The invention belongs to the technical field of resource and energy recycling, and particularly relates to a comprehensive recycling solution for high-temperature solid wastes. The device comprises a heat replacement assembly, a metal separation assembly and a waste heat circulation assembly; the heat exchange assembly is used for extracting heat energy in the high-temperature solid waste through heat exchange, and conveying the high-temperature solid waste after granulation to the metal separation assembly; the metal separation assembly is used for respectively extracting magnetic metal and non-magnetic metal in the granular solid waste material through a metal separation process and forming tailings; the waste heat circulation assembly is used for collecting and conveying hot air extracted to high-temperature solid waste heat energy in the heat replacement assembly to waste heat recycling equipment and/or tail gas treatment equipment, and tracking, collecting and recycling heat energy carried by granular solid waste materials.)

1. The high-temperature solid waste comprehensive recycling solution is characterized by comprising a heat replacement assembly, a metal separation assembly and a waste heat circulation assembly;

the heat replacement assembly is used for extracting heat energy in the high-temperature solid waste through heat exchange, pelletizing the high-temperature solid waste and then conveying the pelletized high-temperature solid waste to the metal separation assembly;

the metal separation assembly is used for respectively extracting magnetic metal and non-magnetic metal in the granular solid waste material through a metal separation process and forming tailings;

the waste heat circulation assembly is used for collecting and conveying hot air extracted to high-temperature solid waste heat energy in the heat replacement assembly to waste heat recycling equipment and/or tail gas treatment equipment, and tracking, trapping and recycling heat energy carried by granular solid waste materials.

2. The high-temperature solid waste comprehensive recycling solution of claim 1 is characterized in that:

the hot replacement assembly comprises a granulation device (8) and a hot extraction device (9); the granulation equipment (8) comprises a buffer tank (81) and a granulation fan (82), wherein the buffer tank (81) is used for storing and dumping the high-temperature solid waste to form a high-temperature solid waste molten flow, and the granulation fan (82) is used for providing wind power for the high-temperature solid waste molten flow to promote the high-temperature solid waste molten flow to perform sufficient heat exchange with air and crystallize into solid waste particles; the thermal extraction equipment (9) comprises a thermal displacer (91) and a thermal displacer fan set (92), the heat exchanger (91) comprises a plurality of rows of heat exchange devices (911) and a sealed housing (912) providing an enclosed space for the heat exchange devices (911), the sealed shell (912) is provided with a feeding hole and a blanking hole, the heat exchange device (911) comprises a heat exchange bed (9111), a bed body supporting framework (9112) and a bed body driving device (9113), the heat exchange bed (9111) is slidably arranged on the bed body supporting framework (9112) and can do reciprocating linear motion on the bed body supporting framework (9112) under the action of the bed body driving device (9113), the heat exchange bed (9111) is provided with a plurality of ventilation structures allowing wind power to pass through, and the sealing shell (912) is provided with at least one hot air pipeline; the hot replacement fan set (92) comprises a plurality of hot replacement fans and fan access pipelines matched with the hot replacement fans for use, and the fan access pipelines are communicated with the hot replacement fans and the bottoms of the heat exchange beds (9111) and are in sealed connection with the bottoms of the heat exchange beds (9111);

pouring high-temperature solid waste from the buffer tank (81) into the sealed shell (912) to form a high-temperature solid waste molten flow, wherein the high-temperature solid waste molten flow can be subjected to sufficient heat exchange with air blown by a granulating fan (82), and finally crystallized into solid waste particles to be deposited on the heat exchange bed (9111); solid useless granule carries out abundant heat exchange with the normal atmospheric temperature air of going into through the hot replacement fan on heat exchange bed (9111), extracts the high temperature air warp of energy the discharge of hot-blast pipe seal shell (912), and the solid useless granule after accomplishing the heat exchange is in under the effect of bed body drive arrangement (9113) the discharge of blanking mouth seal shell (912).

3. The high-temperature solid waste comprehensive recycling solution of claim 2 is characterized in that:

the granulation equipment (8) further comprises a granulation air pipe (87), wherein the granulation air pipe (87) is arranged on the sealed shell (912) and can convey the wind power from the granulation fan (82) to the high-temperature solid waste molten flow.

4. The high-temperature solid waste comprehensive recycling solution of claim 2 is characterized in that:

the heat exchange bed (9111) is divided into a feeding section, a heat exchange section and a discharging section; the hot-air exchanger group (92) is provided with hot-air exchanger fans for supplying wind power to the feeding section and the heat exchange section respectively.

5. The high-temperature solid waste comprehensive recycling solution of claim 1 is characterized in that:

the metal separation assembly comprises a magnetic metal separation process (10) and a non-magnetic metal separation process (20);

the magnetic metal separation process (10) comprises a magnetic substance extraction device, wherein the magnetic substance extraction device comprises a solid waste conveying mechanism, and the solid waste conveying mechanism comprises a driving roller, a bend pulley, a conveying belt arranged on the driving roller and the bend pulley and a driving motor used for driving the driving roller; an upper-layer metal grabbing mechanism (110) and a lower-layer metal grabbing mechanism (120) are arranged on the conveying belt, and the upper-layer metal grabbing mechanism (110) is used for recycling metal substances on the upper layer of solid wastes; the lower metal grabbing mechanism (120) is used for recycling metal substances of the solid waste lower layer;

the non-magnetic metal separation process (20) comprises a sediment type metal separator, wherein the sediment type metal separator comprises a chute (210), a slag hopper (220) and a fan (230); the chute (210) has a certain inclination and is used for forming a fluidization space of the solid waste so as to realize the sedimentation separation of metal substances and non-metal substances in the solid waste; the slag hopper (220) is used for storing metal substances separated from solid waste; the fan (230) is used for providing fluidization wind force of solid wastes to promote the solid wastes to form a fluidization state on the chute (210);

the solid waste materials are firstly subjected to the magnetic metal separation process (10) to recover magnetic metal substances, and then are subjected to the non-magnetic metal separation process (20) to recover non-magnetic metal substances, so that the ideal metal recovery rate can be ensured.

6. The high-temperature solid waste comprehensive recycling solution of claim 5, which is characterized in that:

the upper metal grabbing mechanism (110) is a piggyback metal separator, which comprises:

a piggyback chassis (1110);

the first electromagnetic roller (1120) and the second electromagnetic roller (1130) are respectively hinged to two ends of the piggy-back chassis (1110) and are used for recovering magnetic substances in solid wastes;

a synchronous belt (1140) disposed on the first electromagnetic roller (1120) and the second electromagnetic roller (1130) for realizing synchronous movement of the first electromagnetic roller (1120) and the second electromagnetic roller (1130);

the driving mechanism (1150) is arranged on the piggy-back chassis (1110) and is used for driving the first electromagnetic roller (1120) or the second electromagnetic roller (1130);

the suspension mechanism (1160) is arranged on the piggy-back chassis (1110) and is used for suspending the piggy-back chassis (1110);

the electric control module is used for completing the system function of the piggyback metal separator, and the control ends of the first electromagnetic roller (1120) and the second electromagnetic roller (1130) are electrically connected to the electric control module;

the piggy-back metal separator is suspended on the solid waste to be comprehensively recycled through the suspension mechanism (1160), and the first electromagnetic roller (1120) and the second electromagnetic roller (1130) can continuously recycle magnetic substances in the solid waste in a cross operation mode under the driving of the driving mechanism (1150).

7. The high-temperature solid waste comprehensive recycling solution of claim 5, which is characterized in that:

the chute (210) comprises a chute shell (2110) and a fluidization generation bed (2120), the chute shell (2110) is of a closed structure, a plurality of air holes (2130) are formed in the fluidization generation bed (2120), and the fluidization generation bed (2120) is arranged in the chute shell (2110);

the slag bucket (220) comprises a slag bucket shell (2210), and a slag discharge port (2220) and a plurality of blast ports (2230) are arranged on the slag bucket shell (2210); the slag bucket housing (2210) is hermetically connected to the chute housing (2110), and the fluidization generation bed (2120) is obliquely arranged above the slag bucket housing (2210).

8. The high-temperature solid waste comprehensive recycling solution of claim 1 is characterized in that:

the waste heat circulation assembly comprises a waste heat recovery combined air duct (71), a cooling device (72) and a dust removal device (73); the waste heat recovery combined air duct (71) comprises a front hot air duct (715), a main waste heat air duct (711) and a plurality of auxiliary waste heat air ducts (712); one end of the front hot air duct (715) is communicated to a heat exchange section (74) of the high-temperature solid waste comprehensive recycling assembly line, and the other end of the front hot air duct is used for connecting waste heat recycling equipment; one end of the main waste heat air duct (711) is communicated to a heat exchange section (74) of the high-temperature solid waste comprehensive recycling assembly line and is positioned at the rear section of the front hot air duct (715), and the other end of the main waste heat air duct is communicated to an air inlet of the cooling equipment (72); one end of the auxiliary waste heat air duct (712) is communicated to the material conveying section (75) of the high-temperature solid waste comprehensive recycling assembly line, and the other end of the auxiliary waste heat air duct is communicated to the main waste heat air duct (711); an air outlet of the cooling equipment (72) is communicated to an air inlet of the dust removing equipment (73);

when the high-wind-speed hot wind is transmitted along the main residual heat air duct (711), the low-wind-speed hot wind can be driven to be transmitted to the main residual heat air duct (711) along the auxiliary residual heat air duct (712); the hot air collected by the main waste heat air duct (711) and the auxiliary waste heat air duct (712) is sequentially cooled and dedusted by the cooling equipment (72) and the dedusting equipment (73), and then is discharged out of the dedusting equipment (73) through an air outlet of the dedusting equipment (73).

9. The high-temperature solid waste comprehensive recycling solution of claim 8, characterized in that:

and a waste heat recovery cover (714) extending along the material conveying section (75) is arranged between the auxiliary waste heat air duct (712) and the material conveying section (75) of the high-temperature solid waste comprehensive recycling assembly line.

10. The high-temperature solid waste comprehensive recycling solution of claim 8, characterized in that:

the ratio of the diameter of the main waste heat air duct (711)/the auxiliary waste heat air duct (712) is between 5 and 12, and the fluid flowing direction of the communication part between the auxiliary waste heat air duct (712) and the main waste heat air duct (711) forms an included angle of no more than 50 degrees with the fluid flowing direction of the main waste heat air duct (711).

Technical Field

The application belongs to the technical field of resource and energy recycling, and particularly relates to a high-temperature solid waste comprehensive recycling solution.

Background

The high-temperature solid waste of steel and various metal smelting enterprises, such as steel slag, contains a large amount of heat energy (with the temperature as high as five to six hundred ℃) and metal substances, and the heat energy and the metal substances contained in the high-temperature solid waste are comprehensively recycled, so that the waste of energy can be reduced, the pollution can be avoided, the environmental protection is promoted, and the high-temperature solid waste has very obvious social, economic and environmental significance. Therefore, the high-efficiency comprehensive recycling technology of high-temperature solid wastes is taken as a high and new technology mainly promoted by technical authorities of various countries.

The high-efficiency comprehensive recycling of high-temperature solid wastes is realized, and the following technical problems are inevitably solved:

1. because of the huge amount of solid wastes and the low metal content, a production line type recovery process capable of carrying out continuous operation and corresponding special equipment thereof have to be developed;

2. because the solid waste contains magnetic metal and non-magnetic metal, a metal separation scheme capable of realizing classified recovery of different metals must be developed to promote the best use of the materials;

3. on the high-temperature solid waste comprehensive recovery production line, after the hot extraction operation is completed, partial heat energy is carried by solid waste materials or hot air to enter metal separation operation and tail gas treatment operation, the heat energy entering the metal separation operation can influence the recovery rate of the metal separation operation, the heat energy entering the tail gas treatment operation can cause that the tail gas cannot reach the emission standard, and meanwhile, the tail gas treatment equipment can be damaged.

4. The occurrence state consistency of the metal in the solid waste material is poor, and the comprehensive recovery rate of the metal separation process cannot meet the requirement.

Disclosure of Invention

In view of the above, the invention provides a solution for comprehensively recycling high-temperature solid waste, so as to solve the technical problems in the prior art.

The solution provided by the invention for solving the technical problem is as follows:

a solution for comprehensively recycling high-temperature solid waste comprises a heat replacement assembly, a metal separation assembly and a waste heat circulation assembly; the heat exchange assembly is used for extracting heat energy in the high-temperature solid waste through heat exchange, and conveying the high-temperature solid waste after granulation to the metal separation assembly; the metal separation assembly is used for respectively extracting magnetic metal and non-magnetic metal in the granular solid waste material through a metal separation process and forming tailings; the waste heat circulation assembly is used for collecting and conveying hot air extracted to high-temperature solid waste heat energy in the heat replacement assembly to waste heat recycling equipment and/or tail gas treatment equipment, and tracking, collecting and recycling heat energy carried by granular solid waste materials.

As a preference of the hot-replacement assembly, the hot-replacement assembly comprises a granulation device and a hot extraction device; the granulation equipment comprises a buffer tank and a granulation fan, wherein the buffer tank is used for storing and dumping high-temperature solid waste to form a high-temperature solid waste molten flow, and the granulation fan is used for providing wind power for the high-temperature solid waste molten flow to promote the high-temperature solid waste molten flow to perform sufficient heat exchange with air and crystallize into solid waste particles; the heat extraction equipment comprises a heat displacer and a heat displacer fan unit, the heat displacer comprises a plurality of rows of heat exchange devices and a sealing shell providing a closed space for the heat exchange devices, a feed inlet and a discharge outlet are arranged on the sealing shell, the heat exchange devices comprise heat exchange beds, a bed body supporting framework and a bed body driving device, the heat exchange beds are slidably arranged on the bed body supporting framework and can do reciprocating linear motion on the bed body supporting framework under the action of the bed body driving device, a plurality of ventilation structures allowing wind power to pass through are arranged on the heat exchange beds, and at least one hot air pipeline is arranged on the sealing shell; the hot replacement fan set comprises a plurality of hot replacement fans and fan access pipelines matched with the hot replacement fans for use, and the fan access pipelines are communicated with the hot replacement fans and the bottoms of the heat exchange beds and are in sealed connection with the bottoms of the heat exchange beds; pouring high-temperature solid waste into the sealed shell from the buffer tank to form high-temperature solid waste molten flow, wherein the high-temperature solid waste molten flow can perform sufficient heat exchange with air blown by a granulation fan, and finally, the high-temperature solid waste molten flow is crystallized into solid waste particles to be deposited on a heat exchange bed; the solid waste particles are subjected to full heat exchange with normal-temperature air blown in by a hot replacement fan on a heat exchange bed, high-temperature air extracted with energy is discharged out of the sealing shell through a hot air pipeline, and the solid waste particles after heat exchange are discharged out of the sealing shell through a blanking port under the action of a bed body driving device.

Preferably, the granulation equipment further comprises a granulation air pipe, wherein the granulation air pipe is arranged on the sealed shell and can convey the wind power from the granulation fan to the high-temperature solid waste molten flow.

Preferably, the heat exchange bed is divided into a feeding section, a heat exchange section and a discharging section; the hot-air replacement fan set is provided with hot-air replacement fans respectively used for supplying wind power to the feeding section and the heat exchange section.

Preferably, the metal separation assembly comprises a magnetic metal separation process and a non-magnetic metal separation process; the magnetic metal separation process comprises a magnetic substance extraction device, wherein the magnetic substance extraction device comprises a solid waste conveying mechanism, and the solid waste conveying mechanism comprises a driving roller, a turnabout drum, a conveying belt arranged on the driving roller and the turnabout drum and a driving motor used for driving the driving roller; an upper metal grabbing mechanism and a lower metal grabbing mechanism are arranged on the conveying belt, and the upper metal grabbing mechanism is used for recycling metal substances on the upper layer of solid wastes; the lower metal grabbing mechanism is used for recycling the metal substances on the solid waste lower layer; the nonmagnetic metal separation process comprises a sediment type metal separator, wherein the sediment type metal separator comprises a chute, a slag hopper and a fan; the chute has a certain gradient and is used for forming a fluidized space of solid wastes so as to realize the sedimentation separation of metal substances and non-metal substances in the solid wastes; the slag hopper is used for storing metal substances separated from solid waste; the fan is used for providing fluidization wind power of the solid waste to promote the solid waste to form a fluidization state on the chute; the solid waste materials are firstly subjected to a magnetic metal separation process to recover magnetic metal substances, and then are subjected to a non-magnetic metal separation process to recover non-magnetic metal substances, so that an ideal metal recovery rate can be ensured.

As a preferred option of the metal separation assembly, the upper metal gripping mechanism is a trolley type metal separator, and the trolley type metal separator includes: carrying vehicle chassis; the first electromagnetic roller and the second electromagnetic roller are respectively hinged at two ends of the carrier vehicle chassis and are used for recovering magnetic substances in solid wastes; the synchronous belt is arranged on the first electromagnetic roller and the second electromagnetic roller and used for realizing synchronous movement of the first electromagnetic roller and the second electromagnetic roller; the driving mechanism is arranged on the chassis of the piggy back car and used for driving the first electromagnetic roller or the second electromagnetic roller; the suspension mechanism is arranged on the piggy back chassis and used for suspending the piggy back chassis; the electric control module is used for completing the system function of the piggyback metal separator, and the control ends of the first electromagnetic roller and the second electromagnetic roller are electrically connected to the electric control module; the piggy-back metal separator is suspended on the solid waste to be comprehensively recycled through the suspension mechanism, and the first electromagnetic roller and the second electromagnetic roller can continuously recycle magnetic substances in the solid waste in a cross operation mode under the driving of the driving mechanism.

Preferably, the chute comprises a chute shell and a fluidization generation bed, the chute shell is of a closed structure, a plurality of air holes are formed in the fluidization generation bed, and the fluidization generation bed is arranged in the chute shell; the slag hopper comprises a slag hopper shell, and a slag discharge port and a plurality of blast ports are arranged on the slag hopper shell; the slag hopper shell is hermetically connected on the chute shell, and the fluidization generation bed is obliquely arranged above the slag hopper shell.

As the optimization of the waste heat circulation assembly, the waste heat circulation assembly comprises a waste heat recovery combined air duct, a cooling device and a dust removal device; the waste heat recovery combined air duct comprises a front hot air duct, a main waste heat air duct and a plurality of auxiliary waste heat air ducts; one end of the front hot air duct is communicated to a heat exchange section of the high-temperature solid waste comprehensive recycling assembly line, and the other end of the front hot air duct is used for connecting waste heat recycling equipment; one end of the main waste heat air duct is communicated to a heat exchange section of the high-temperature solid waste comprehensive recycling assembly line and is positioned at the rear section of the front hot air duct, and the other end of the main waste heat air duct is communicated to an air inlet of the cooling equipment; one end of the auxiliary waste heat air duct is communicated to the material conveying section of the high-temperature solid waste comprehensive recycling assembly line, and the other end of the auxiliary waste heat air duct is communicated to the main waste heat air duct; an air outlet of the cooling equipment is communicated to an air inlet of the dust removing equipment; when the high-wind-speed hot wind is transmitted along the main waste heat wind channel, the low-wind-speed hot wind can be driven to be transmitted to the main waste heat wind channel along the auxiliary waste heat wind channel; the hot air collected by the main waste heat air duct and the auxiliary waste heat air duct is cooled and dedusted by the cooling equipment and the dedusting equipment, and then is discharged out of the dedusting equipment through an air outlet of the dedusting equipment.

As the optimization of the waste heat circulation assembly, a waste heat recovery cover extending along the material conveying section is arranged between the auxiliary waste heat air duct and the material conveying section of the high-temperature solid waste comprehensive recycling assembly line.

Preferably, the ratio of the diameters of the main waste heat air duct and the auxiliary waste heat air duct is between 5 and 12, and the fluid flowing direction of the communication part between the auxiliary waste heat air duct and the main waste heat air duct and the fluid flowing direction of the main waste heat air duct form an included angle of not more than 50 degrees, preferably an included angle of between 42 and 45 degrees.

The beneficial technical effects are as follows:

1. according to the comprehensive recycling solution for the high-temperature solid waste, the heat energy in the high-temperature solid waste can be extracted into the gas medium through the heat exchange assembly, and meanwhile, the high-temperature solid waste is processed into solid waste particles with uniform particle sizes, so that the technical problem 4 provided in the background technology is solved; magnetic metals and non-magnetic metals in granular solid waste particles can be separated into separate products and form tailings through the metal separation assembly, so that the technical problems 1 and 2 proposed in the background technology are solved; the hot air extracted to the solid waste heat energy can be conveyed to the waste heat recycling equipment and/or the tail gas treatment equipment through the waste heat circulation assembly, and the heat energy carried by the granular solid waste materials is tracked, captured and recycled, so that the technical problem 3 provided in the background technology is solved.

2. The application provides a solid useless comprehensive recovery utilization heat replacement assembly of high temperature adopts granulation equipment to carry out efficient heat exchange extraction with solid useless pelletization of high temperature and combines the heat extraction device to solid useless granule, can effectively retrieve solid useless heat energy in, for subsequent metal comprehensive recovery utilization operation provides the even material of coming of granularity, has energy recuperation efficiency height, environmental protection effect is good and help improving technical advantage such as metal comprehensive recovery utilization rate.

3. The waste heat recovery combined air duct adopts the front hot air duct to recover most of heat energy in high-temperature solid waste in the heat exchange section, adopts the main waste heat air duct to capture part of low-energy hot air which is not recovered by the front hot air duct in the heat exchange section, adopts the auxiliary waste heat air duct to capture part of low-energy hot air which is carried by solid waste materials or air to a material conveying section such as a chain plate machine, can collect waste heat entering metal separation operation and tail gas treatment operation to the maximum extent and convey the waste heat to cooling equipment and dust removal equipment for further cooling and dust removal treatment on the premise of ensuring high-efficiency recovery and utilization of high-temperature solid waste heat energy, not only improves the energy recovery efficiency, but also creates good production conditions for subsequent metal separation operation, and has obvious technical progress significance and social, economic and environmental protection significance.

4. The metal separation assembly can realize the production line type continuous recovery operation of the powder solid waste and/or the granular solid waste, and can also recover metal substances in the solid waste according to categories through the magnetic metal separation process and the non-magnetic metal separation process, and has the technical advantages of high metal recovery rate, good recovery and utilization effect and the like.

5. The magnetic substance extraction element is a special equipment developed by the inventor aiming at the comprehensive recycling of solid waste magnetic substances, an upper metal grabbing mechanism and a lower metal grabbing mechanism are simultaneously arranged on a solid waste powder material conveying belt, the upper metal grabbing mechanism is used for recycling upper metal substances in the solid waste powder material, and the lower metal grabbing mechanism is used for recycling lower metal substances in the solid waste powder material. Through the combined operation of the upper and lower metal grabbing mechanisms, the comprehensive recycling of magnetic substances in solid waste powder materials can be completed more thoroughly, so that the comprehensive recycling efficiency of the magnetic substances in the solid waste is effectively improved.

The technical solutions and technical effects of the present application will be described in detail below with reference to the drawings and the detailed description of the present application.

Drawings

FIG. 1: a high-temperature solid waste comprehensive recycling solution equipment image contact diagram;

FIG. 2: a schematic perspective view of a thermal displacement assembly;

FIG. 3: a schematic plan view of a heat exchange assembly;

FIG. 4: side view of a piggyback metal separator;

FIG. 5: a top view of a piggyback metal separator;

FIG. 6: left view of a piggyback metal separator;

FIG. 7: the structure schematic diagram of the sediment type metal separator;

FIG. 8: FIG. 7 is a schematic plan view of a fluidization generation bed;

FIG. 9: the waste heat circulation assembly is in a schematic three-dimensional structure.

And (3) identification and explanation:

10-magnetic metal separation process, 20-non-magnetic metal separation process;

110-an upper layer metal grabbing mechanism and 120-a lower layer metal grabbing mechanism;

1110-a carrier vehicle chassis, 1120-a first electromagnetic roller, 1130-a second electromagnetic roller, 1140-a synchronous belt, 1150-a driving mechanism and 1160-a suspension mechanism;

210-chute, 220-slag hopper and 230-fan;

2110-chute housing, 2120-fluidization generation bed, 2130-wind holes;

2210-slag bucket shell, 2220-slag discharge port, 2230-blast port, 2240-gate valve;

71-a waste heat recovery combined air duct, 72-a cooling device, 73-a dust removal device, 74-a heat exchange section and 75-a material conveying section;

711-main waste heat air duct, 712-auxiliary waste heat air duct, 714-waste heat recovery cover, 715-front hot air duct;

8-granulation equipment and 9-thermal extraction equipment;

81-a buffer tank, 82-a granulation fan and 87-a granulation air pipe;

91-heat exchanger, 92-heat exchange fan set;

911-heat exchange device, 912-sealed housing, 913-heat-holding plate;

9111-a heat exchange bed, 9112-a bed support framework, 9113-a bed drive.

Detailed Description

Referring to fig. 1, the solution for comprehensively recycling high-temperature solid waste provided by the present application includes a heat exchange assembly, a metal separation assembly and a waste heat circulation assembly; the heat exchange assembly is used for extracting heat energy in the high-temperature solid waste through heat exchange, and conveying the high-temperature solid waste after granulation to the metal separation assembly; the metal separation assembly is used for respectively extracting magnetic metal and non-magnetic metal in the granular solid waste material through a metal separation process and forming tailings; the waste heat circulation assembly is used for collecting and conveying hot air extracted to high-temperature solid waste heat energy in the heat replacement assembly to waste heat recycling equipment and/or tail gas treatment equipment, and tracking, collecting and recycling heat energy carried by granular solid waste materials. The part in the irregular arc-shaped wire frame in the figure 1 is a waste heat circulation assembly, the right part of the waste heat circulation assembly is a heat replacement assembly, and the left part of the waste heat circulation assembly is a metal separation assembly.

Referring to fig. 1-3, the hot-swap assembly includes a granulation apparatus 8 and a hot extraction apparatus 9; the granulation equipment 8 comprises a buffer tank 81, a granulation fan 82 and a granulation air pipe 87, wherein the buffer tank 81 is used for storing and dumping high-temperature solid waste to form a high-temperature solid waste molten flow, the granulation fan 82 is used for providing wind power for the high-temperature solid waste molten flow to promote the high-temperature solid waste molten flow to perform sufficient heat exchange with air and crystallize into solid waste particles, and the granulation air pipe 87 is arranged on a sealed shell 912 and can convey the wind power from the granulation fan 82 to the high-temperature solid waste molten flow; the thermal extraction equipment 9 comprises a thermal displacer 91 and a thermal displacer fan set 92, the thermal displacer 91 comprises a plurality of rows of heat exchange devices 911 and a sealing shell 912 providing a closed space for the heat exchange devices 911, a feed inlet and a discharge outlet are formed in the sealing shell 912, the heat exchange devices 911 comprise a heat exchange bed 9111, a bed support framework 9112 and a bed driving device 9113, the heat exchange bed 9111 is slidably arranged on the bed support framework 9112 and can do reciprocating linear motion on the bed support framework 9112 under the action of the bed driving device 9113, a plurality of ventilation structures allowing wind to pass through are arranged on the heat exchange bed 9111, and the ventilation structures can be in a hole shape, a slit shape or other shapes; at least one hot air duct is provided on the sealed housing 912; hot replacement fan group 92 includes a plurality of hot replacement fans and inserts the pipeline with the supporting fan that uses of hot replacement fan, and fan inserts the pipeline and communicates in the bottom of hot replacement fan and heat exchange bed 9111 and forms sealing connection with the bottom of heat exchange bed 9111. The heat exchange bed 9111 is divided into a feeding section, a heat exchange section 74 and a discharge section; the hot-air exchanger group 92 is provided with hot-air exchanger fans for supplying wind power to the feeding section and the heat exchange section, respectively.

Wherein:

the distance between the air supply opening of the granulation air pipe 87 and the central line of the buffer tank 81 is 2300mm-2450 mm.

The hot-air pipes include anterior segment hot-air pipes 93 and back end hot-air pipes 94, and anterior segment hot-air pipes 93 and back end hot-air pipes 94 are all installed on sealed housing 912, and anterior segment hot-air pipes 93 sets up in the middle section of heat exchange bed 9111, and back end hot-air pipes 94 sets up in the back end of heat exchange bed 9111.

The heat exchange bed 9111 is a grate-type cooling bed, the heat exchange bed 9111 is slidably arranged on the bed body support framework 9112 through a plurality of roller groups, and the bed body driving device 9113 is a hydraulic cylinder. For the back end that prevents to carry the high temperature air entering heat exchange bed 9111 of a large amount of heat energy, still be provided with between anterior segment hot-air pipes 93 and the back end hot-air pipes 94 and hold together hot plate 913, hold up the contained angle that forms between hot plate 913 and the heat exchange bed 9111 and be not less than 90.

Pouring high-temperature solid waste from the buffer tank 81 into the sealed housing 912 to form a high-temperature solid waste molten flow, wherein the high-temperature solid waste molten flow can perform sufficient heat exchange with air blown by the granulating fan 82, and finally crystallized into solid waste particles to be deposited on the heat exchange bed 9111; the solid waste particles are subjected to sufficient heat exchange with normal-temperature air blown in by a hot-air replacement fan on the heat exchange bed 9111, the high-temperature air extracted with energy is discharged out of the sealing shell 912 through a hot air pipeline, and the solid waste particles after heat exchange are discharged out of the sealing shell 912 through a blanking port under the action of the bed body driving device 9113.

The high-temperature solid waste is poured from the buffer tank 81 and injected into the sealed housing 912 to form a high-temperature solid waste molten flow, and the high-temperature solid waste molten flow can perform sufficient heat exchange with air blown by the granulating fan 82, and finally crystallized into solid waste particles to be deposited on the heat exchange bed 9111. The solid waste particles are fully heat-exchanged with normal-temperature air blown in by a heat exchange fan on the heat exchange bed 9111, the high-temperature air extracted with energy is discharged out of the sealing shell 912 through the front-section hot-air pipeline 93 and the rear-section hot-air pipeline 94, for example, the high-temperature air is conveyed to waste heat power generation equipment or cooling dust removal equipment, and the solid waste particles after heat exchange are discharged out of the sealing shell 912 through a blanking port under the action of the bed body driving device 9113 and enter a metal separation assembly. The blanking mechanism is as follows: the bed body driving device 9113 drives the heat exchange bed 9111 to do linear reciprocating motion on the bed body supporting framework 9112, and the granular solid waste materials enter the metal separation assembly through the blanking port under the action of inertia.

Referring to fig. 1 and 4-8, the metal separation assembly includes a magnetic metal separation process 10 and a non-magnetic metal separation process 20; the magnetic metal separation process 10 includes a magnetic material extraction device, the magnetic material extraction device includes a solid waste conveying mechanism, the solid waste conveying mechanism includes a driving drum, a turnabout drum, a conveying belt arranged on the driving drum and the turnabout drum, and a driving motor for driving the driving drum; an upper metal grabbing mechanism 110 and a lower metal grabbing mechanism 120 are arranged on the conveying belt, and the upper metal grabbing mechanism 110 is used for recycling metal substances on the upper layer of solid wastes; the lower metal grabbing mechanism 120 is used for recovering metal substances in the solid waste lower layer; the non-magnetic metal separation process 20 includes a sediment type metal separator including a chute 210, a slag hopper 220, and a fan 230; the chute 210 has a certain inclination and is used for forming a fluidized space of the solid waste so as to realize the sedimentation separation of metal substances and non-metal substances in the solid waste; the slag hopper 220 is used for storing metal substances separated from solid waste; the fan 230 is used to provide a fluidization wind force to the solid waste to promote the solid waste to form a fluidized state on the chute 210.

The solid waste material is first subjected to a magnetic metal separation process 10 to recover magnetic metal substances, and then subjected to a non-magnetic metal separation process 20 to recover non-magnetic metal substances, so that an ideal metal recovery rate can be ensured. After the recovery treatment of the granular solid waste material by the metal separation assembly, three products are formed: magnetic metal is stored in the magnetic metal ore bin 201, nonmagnetic metal is stored in the nonmagnetic metal ore bin 304, and tailings are stored in the machine-made sand bin 504.

The upper metal gripping mechanism 110 is a piggy-back metal separator, which comprises a piggy-back chassis 1110, a first electromagnetic roller 1120, a second electromagnetic roller 1130, a synchronous belt 1140, a driving mechanism 1150 and a suspension mechanism 1160.

The piggy-back chassis 1110 is used for carrying other components or parts, and the first electromagnetic roller 1120 and the second electromagnetic roller 1130 are respectively hinged at two ends of the piggy-back chassis 1110 and are used for recovering magnetic substances in solid wastes. The timing belt 1140 is disposed on the first electromagnetic roller 1120 and the second electromagnetic roller 1130 to realize the synchronous movement of the first electromagnetic roller 1120 and the second electromagnetic roller 1130, and the timing belt is a belt or a track. The driving mechanism 1150 is arranged on the carrier vehicle chassis 1110, and comprises a driving motor and a speed change device used with the driving motor, and is used for driving the first electromagnetic roller 1120 or the second electromagnetic roller 1130; the side part of the piggyback chassis 1110 is provided with a flange structure, the driving mechanism 1150 is provided with a flange matching structure, and the driving mechanism 1150 is fastened on the piggyback chassis 1110 through the matching between the flange structure and the flange matching structure. The suspension mechanism 1160 is arranged on the piggy back chassis 1110 and is used for suspending the piggy back chassis 1110; the suspension mechanism 1160 includes an upper sling, a hanger, and a lower sling; one end of the upper sling is hinged on the hanger, and the other end of the upper sling is used for connecting a suspension facility; one end of the lower sling is hinged on the hanging bracket, and the other end is hinged on the vehicle carrying chassis 1110. The number of the suspension mechanisms 1160 is four, and the four suspension mechanisms 1160 are uniformly and symmetrically arranged on the piggy chassis 1110 so as to ensure that the piggy chassis 1110 is uniformly stressed. The electronic control module is used for completing the system function of the piggyback metal separator, and the control ends of the first electromagnetic roller 1120 and the second electromagnetic roller 1130 are electrically connected to the electronic control module.

Lower floor's metal snatchs mechanism 120 includes permanent magnetism cylinder, clout fill and smart hopper, and the clout fill is used for holding the clout, and the smart hopper is used for holding magnetic substance.

When materials pass through the solid waste material conveying belt, the metal on the upper layer is sucked onto the electromagnetic roller of the upper layer metal grabbing mechanism 110 under the action of the upper layer metal grabbing mechanism 110, the metal on the lower layer is sucked onto the permanent magnetic roller of the lower layer metal grabbing mechanism 120 under the action of the lower layer metal grabbing mechanism 120, even if powder or particle materials on the conveying belt are thick, high-efficiency separation of magnetic metals can be completed, therefore, the comprehensive recycling efficiency of magnetic materials in solid waste is effectively improved, and the corresponding technical problems in the prior art are solved.

Description of the principle of magnetic substance extraction device:

the piggyback metal separator is suspended on an infrastructure through a suspension mechanism 1160, so that a first magnetic drum 1120 and a second magnetic drum 1130 are in contact with solid wastes to be recycled on a solid waste conveyor belt, due to friction force between the magnetic drums and the solid wastes and/or between the conveyor belts, when the driving mechanism 1150 drives the magnetic drums to rotate, the first magnetic drum 1120 and the second magnetic drum 1130 simultaneously move towards the X + direction of the conveyor belt, when one of the magnetic drums, such as the first magnetic drum 1120, leaves the conveyor belt, an electric control module disconnects a power supply loop of the first magnetic drum 1120, at the moment, the first magnetic drum 1120 loses magnetism and starts to unload materials, and the second magnetic drum 1130 still grabs magnetic substances in the solid wastes; after the first magnetic drum 1120 finishes discharging, the electronic control module enables the driving mechanism 1150 to reversely drive, at this time, the first magnetic drum 1120 and the second magnetic drum 1130 move towards the X-direction, that is, the direction opposite to the X + direction, after the second magnetic drum 1130 leaves the conveyor belt, the electronic control module disconnects a power supply loop of the second magnetic drum 1130, at this time, the second magnetic drum 1130 loses magnetism and starts discharging, and the first magnetic drum 1120 still grabs the magnetic substances in the solid waste; the circulation realizes the continuous cross operation of the piggyback metal separator or the continuous recovery of the magnetic metal in the solid waste in the mode of the cross operation. Through the continuous cross operation of the upper metal grabbing mechanism 110, the efficient separation and recovery of the magnetic substances in the upper layer of the solid waste powder material can be completed. After solid waste powder or granular materials on the conveying belt are subjected to recovery processing of the upper-layer metal grabbing mechanism 110, the solid waste powder or granular materials can be subjected to recovery processing of the lower-layer metal grabbing mechanism 120 again after leaving the conveying belt, and magnetic metal on the lower layer of the solid waste powder or granular materials can be sucked to the surface of the magnetic roller under the action of the magnetic roller and then collected into the fine material hopper of the lower-layer metal grabbing mechanism 120.

The main equipment of the non-magnetic metal separation process 20 is a sediment type metal separator, which includes a chute 210, a slag hopper 220 and a fan 230. The chute 210 has an inclination angle of 15-23 degrees and is used for forming a fluidization space of the solid waste so as to realize the sedimentation separation of metal substances and non-metal substances in the solid waste; the slag hopper 220 is used for storing metal substances separated from solid waste; the fan 230 is used to provide a fluidization wind force to the solid waste to promote the solid waste to form a fluidized state on the chute 210.

The chute 210 comprises a chute housing 2110 and a fluidization generation bed 2120, the chute housing 2110 has a closed structure, a plurality of air holes 2130 are arranged on the fluidization generation bed 2120, the fluidization generation bed 2120 is arranged in the chute housing 2110, and a feeding port 2140 is further arranged on the chute housing 2110.

The slag bucket 220 comprises a slag bucket housing 2210, and a slag discharge port 2220 and a plurality of blast ports 2230 are arranged on the slag bucket housing 2210; the slag bucket housing 2210 is sealingly and securely attached to the chute housing 2110 with the fluidization generation bed 2120 being disposed obliquely above the slag bucket housing 2210. A plurality of tuyeres 2230 are uniformly arranged around the slag hopper shell 2210, and a gate valve 2240 is further arranged at the slag discharge port 2220 of the slag hopper 220.

The solid waste material treated by the magnetic metal separation process 10 is fed into the chute 210 from the feeding port 2140, and at the same time or in advance, the fan 230 is started to operate, the solid waste material enters a fluidized state on the fluidized generation bed 2120 to be subjected to sedimentation separation, the metal substances with high density enter the slag hopper 220, and the non-metal substances slip out of the fluidized generation bed 2120 to enter the machine-made sand bank 504.

In another preferred embodiment of the present application, the diameter of the air holes 130 is gradually reduced from the high end to the low end of the fluidization-generating bed 2120 for the rational distribution of the air force over the fluidization-generating bed 2120 according to the gradient difference of the metal content in the material to be sorted.

In another preferred embodiment of the present application, the blast direction of the tuyeres 2230 of the slag hopper 220 is tangential to the extension of the slag hopper housing 2210 for sorting the metal minerals by centrifugal force and gravity by providing a rotating fluid.

Referring to fig. 1 and 9, the waste heat recycling assembly includes a waste heat recycling combined air duct 71, a cooling device 72 and a dust removing device 73; the waste heat recovery combined air duct 71 includes a front hot air duct 715, a main waste heat air duct 711, and a plurality of auxiliary waste heat air ducts 712. One end of the front hot air duct 715 is communicated to the front section or the middle section of the heat exchange section 74 on the high-temperature solid waste comprehensive recycling production line, and the other end is used for connecting a waste heat recovery device. One end of the main waste heat duct 711 is communicated to the rear section or the tail section of the heat exchange section 74 of the high-temperature solid waste comprehensive recycling assembly line, and the other end is communicated to the air inlet of the cooling device 72. One end of the auxiliary waste heat air duct 712 is communicated to the material conveying section 75 of the high-temperature solid waste comprehensive recycling assembly line, a waste heat recycling cover 714 extending along the material conveying section 75 is arranged between the auxiliary waste heat air duct and the material conveying section 75, and the other end of the auxiliary waste heat air duct is communicated to the main waste heat air duct 711. The air outlet of the cooling device 72 is communicated to the air inlet of the dust removing device 73. The front hot air duct 715, the main residual heat air duct 711 and the auxiliary residual heat air duct 712 are fixed on the infrastructure through an air duct fixing structure. Wherein: the diameter ratio of the main waste heat air duct 711 to the auxiliary waste heat air duct 712 is 6.5; an included angle beta formed between the fluid flowing direction of the communication part between the auxiliary waste heat air duct 712 and the main waste heat air duct 711 and the fluid flowing direction of the main waste heat air duct 711 is 42-45 degrees; the cooling device 72 is a condenser or a condensing tower and the dust removing device 73 is a bag filter.

Most (more than 85%) of the hot air extracted to the energy in the heat exchange section is conveyed to waste heat recovery equipment such as power generation equipment by the front hot air duct 7150, a small part of the hot air is conveyed to the cooling equipment 720 by the main waste heat air duct 7110, and part of heat energy carried by solid waste materials or hot air to enter metal separation operation is collected by the auxiliary waste heat air duct 7120 and conveyed to the main waste heat air duct 7110.

When the high-air-speed hot air from the high-temperature section of the high-temperature solid waste comprehensive recycling production line is transmitted along the main waste heat air duct 7110, the low-air-speed hot air from the low-temperature section of the high-temperature solid waste comprehensive recycling production line can be driven to be transmitted along the auxiliary waste heat air duct 7120 to the main waste heat air duct 7110. The hot air collected by the main waste heat air duct 7110 and the auxiliary waste heat air duct 7120 is sequentially cooled and dedusted by the cooling device 720 and the dedusting device 730, and then is discharged out of the dedusting device 730 through the air outlet of the dedusting device 730.

In summary, according to the solution for comprehensively recycling the high-temperature solid waste provided by the application, the heat energy in the high-temperature solid waste can be extracted into the gas medium through the heat exchange assembly, and meanwhile, the high-temperature solid waste is processed into solid waste particles with uniform particle size (the particle size is between 2 and 5mm), so that incoming materials with uniform particle size are provided for subsequent metal separation operation; the magnetic metal and the non-magnetic metal in the granular solid waste particles can be separated into separate products through the metal separation assembly to form tailings, so that the production line type continuous recovery operation of the powder solid waste and/or the granular solid waste can be realized, and the metal substances in the solid waste can be classified and recovered through the magnetic metal separation process and the non-magnetic metal separation process; the waste heat entering the metal separation operation and the tail gas treatment operation can be concentrated to the maximum extent through the waste heat circulation assembly on the premise of ensuring that the high-temperature solid waste heat energy is recovered with high efficiency, and the waste heat is conveyed to cooling equipment and dust removal equipment for further cooling and dust removal treatment; has obvious technical progress significance and social, economic and environmental protection significance.

It should be noted that the use of ordinal numbers such as first, second, etc. and function + designations in this application to refer to related elements or structures is only for the purpose of distinguishing between similar elements or structures having the same structure or function, and does not imply that the related elements or structures have a functional or structural priority or importance, and should not be construed as limiting the application.

While the present invention has been described in detail with reference to the drawings and specific embodiments, it should be noted that the embodiments disclosed in the specification are only preferred embodiments, and other embodiments may be developed by those skilled in the art; any simple modifications and equivalent alterations without departing from the innovative concept are intended to be covered by the present patent.