阅读说明：本技术 焦油渣回收利用系统及回收利用方法 (Tar residue recycling system and method ) 是由 徐西征 邹海旭 王毅 赵汉成 王建宇 李建峰 于 2019-11-07 设计创作，主要内容包括：本申请涉及煤气水分离过程中焦油渣回收装置的技术领域,是焦油渣回收利用系统及回收利用方法,在地面上从前至后依次安装有三相离心机、双螺旋混合机、型煤压球机、固定床气化炉,第一受料斗、第二受料斗与双螺旋混合机之间安装有第一传送带,双螺旋混合机与型煤压球机之间安装有第二传送带,在型煤压球机的出料端设置有使物料进入到上煤系统内的第三传送带。本申请通过焦油渣与煤粉充分混合,使焦油渣和煤粉达到适宜成型的混合比例,然后用型煤压球机制成型煤,最后与块煤一起返回至固定床气化炉内气化,型煤气化生产的粗煤气与块煤产生的粗煤气一起进入原生产系统,实现焦油渣的回收利用,达到资源化、减量化、无害化处置焦油渣的目的。(The utility model relates to a technical field of tar sediment recovery unit in gas water separation process, be tar sediment recycle system and recycle method, subaerial in the past to after install three-phase centrifuge in proper order, helical mixing machine, the ball machine is pressed to the moulded coal, the fixed bed gasifier, first hopper, install first conveyer belt between second hopper and the helical mixing machine, install the second conveyer belt between the ball machine is pressed to helical mixing machine and moulded coal, the discharge end of pressing the ball machine at the moulded coal is provided with the third conveyer belt that makes the material enter into in the system of feeding coal. The tar residue and the coal powder are fully mixed, so that the tar residue and the coal powder reach a proper forming mixing proportion, then the briquette is made by a briquette ball press machine, and finally the briquette is returned to the fixed bed gasification furnace together with the lump coal for gasification, the crude gas produced by the gasification of the briquette and the crude gas produced by the lump coal enter an original production system together, the tar residue is recycled, and the purpose of recycling, reducing and harmlessly treating the tar residue is achieved.)

1. A tar residue recycling system is characterized by comprising a three-phase centrifuge, a first receiving hopper, a second receiving hopper, a double-helix mixer, a briquette ball press and a fixed bed gasification furnace, wherein the three-phase centrifuge is arranged on the ground, a pit is arranged on the ground behind the three-phase centrifuge, the first receiving hopper and the second receiving hopper are arranged in the pit, a weighing feeder is respectively arranged below the bottom discharge ports of the first receiving hopper and the second receiving hopper, the feed ports of the weighing feeder correspond to the discharge ports of the first receiving hopper and the second receiving hopper, at least one double-helix mixer is arranged on the ground behind the first receiving hopper and the second receiving hopper, a first conveying belt is arranged between the discharge end of the weighing feeder and the feed end of the double-helix mixer, the briquette ball press is arranged behind the double-helix mixer, a second conveying belt is arranged between the discharge end of the double-helix mixer and the briquette ball press, the fixed bed gasification furnace is arranged at the rear part of the briquette ball press machine, a coal feeding system is arranged at a feed hopper above the fixed bed gasification furnace, and a third conveying belt for feeding materials into the coal feeding system is arranged at the discharge end of the briquette ball press machine.

2. The tar residue recycling system of claim 1, wherein the first receiving hopper and the second receiving hopper are both provided with a pushing device, the pushing device comprises a motor, a stirring shaft and a spiral auger blade, the upper feeding ports of the first receiving hopper and the second receiving hopper are fixed with a frame, the motor is arranged on the frame, the stirring shaft is arranged on a rotating shaft of the motor and extends into the corresponding receiving hopper, and the spiral auger blade is fixedly connected to the outer wall of the stirring shaft.

3. The tar residue recycling system according to claim 1 or 2, wherein the number of the twin-screw mixers is two, the two twin-screw mixers are connected in series from front to back, the feeding end of the first twin-screw mixer corresponds to the end of the first conveyor belt, the discharging end of the first twin-screw mixer is communicated with the feeding end of the second twin-screw mixer, and the discharging end of the second twin-screw mixer corresponds to the beginning end of the second conveyor belt.

4. The tar residue recycling method according to claim 1, characterized by comprising the steps of:

conveying dust-containing tar generated in the coal gas-water separation process into a three-phase separator, separating water, tar and tar residues in the dust-containing tar by the three-phase separator, conveying the separated water into a raw coal gas-water separation system for recycling, conveying the separated tar to a tank area for storage, and selling the tar, conveying the separated tar residues into a first receiving hopper through materials, wherein the second receiving hopper is used for containing coal powder;

weighing the pulverized coal and the tar residues by a weighing feeder, feeding the pulverized coal and the tar residues into a double-helix mixer according to a proportion for fully contacting and mixing, and feeding the fully mixed materials into a briquette ball press machine by a second conveyor belt so as to form formed coal;

and step three, the formed coal enters a coal feeding system of the fixed bed gasification furnace through a third conveyor belt, and finally, the lump coal which is transported all the time on the coal feeding system and the formed coal enter the fixed bed gasification furnace through the feed hopper to be combusted, so that useful coal gas is generated.

Technical Field

The application relates to the technical field of tar residue recovery devices in gas-water separation processes, in particular to a tar residue recycling system and a recycling method based on the system.

Background

The tar residues are organic solid matters after tar separation in the industries of petrochemical industry, coal coking, coal-to-natural gas and the like, have certain heat value and are difficult to store and utilize, the existing treatment methods are generally outsourcing treatment, open-air stacking and combustion treatment, the cost for handling the outsourcing is high, and the danger of secondary pollution in the transportation process exists, the open-air stacking can occupy a large amount of storage space of a production enterprise, the resources are wasted, and if the combustion treatment is improper, serious environmental pollution can be caused.

Disclosure of Invention

The application provides a tar residue recycling system, overcomes the defects of the prior art, and can effectively solve the problem that the tar residue cannot be economically and effectively recycled in the prior art; on the basis of the purpose, the application also aims to provide a tar residue recycling method.

The device has the advantages that the structure is reasonable and compact, the tar residues and the coal powder are fully mixed, the tar residues and the coal powder reach the appropriate mixing proportion for forming, then the briquette is made by the briquette ball press machine, and finally the briquette is returned to the fixed bed gasification furnace together with the lump coal for gasification, the crude gas produced by the gasification of the briquette and the crude gas produced by the lump coal enter the original production system together, the purification and the synthesis process of the next step are carried out, the recycling of the tar residues is realized, and the purposes of recycling, reducing and harmlessly treating the tar residues are achieved.

Drawings

The specific structure of the application is given by the following figures and examples:

FIG. 1 is a schematic structural diagram of a tar residue recycling system.

Legend: 1. the device comprises a first receiving hopper, a second receiving hopper, a double-helix mixer, a briquette ball press, a fixed bed gasifier, a weighing feeder, a first conveying belt, a second conveying belt, a third conveying belt, a coal feeding system, a motor, a stirring shaft, a spiral auger blade and a second conveying belt, wherein the first receiving hopper is 2, the second receiving hopper is 3, the double-helix mixer is 4, the briquette ball press is 5, the fixed bed gasifier is 6, the weighing feeder is 7, the first conveying belt is 8, the second.

Detailed Description

The present application is not limited to the following examples, and specific implementations may be determined according to the technical solutions and practical situations of the present application.

In the present application, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction of fig. 1 in the specification.

The present application is further described with reference to the following examples and figures, examples of which are as follows: as shown in the attached figure 1, the tar residue recycling system comprises a three-phase centrifuge, a first receiving hopper 1, a second receiving hopper 2, a double-helix mixer 3, a briquette ball press machine 5 and a fixed bed gasification furnace, wherein the three-phase centrifuge is arranged on the ground, a pit is arranged on the ground behind the three-phase centrifuge, the first receiving hopper 1 and the second receiving hopper 2 are arranged in the pit, a weighing feeder 6 is respectively arranged below the bottom discharge ports of the first receiving hopper 1 and the second receiving hopper 2, the feeding ports of the weighing feeder 6 correspond to the discharge ports of the first receiving hopper 1 and the second receiving hopper 2, at least one double-helix mixer 3 is arranged on the ground behind the first receiving hopper 1 and the second receiving hopper 2, a first conveying belt 7 is arranged between the discharge end of the weighing feeder 6 and the feeding end of the double-helix mixer 3, the briquette ball press machine 5 is arranged behind the double-helix mixer 3, a second conveyor belt 8 is arranged between the discharge end of the double-helix mixer 3 and the feed end of the briquette ball press machine 5, the fixed bed gasification furnace is arranged behind the briquette ball press machine 5, a coal feeding system 10 is arranged at the feed hopper above the fixed bed gasification furnace, and a third conveyor belt 9 for feeding materials into the coal feeding system 10 is arranged at the discharge end of the briquette ball press machine 5.

Dust-containing tar generated in the gas-water separation process is conveyed to enter a three-phase separator, the three-phase separator separates water, tar and tar residues in the dust-containing tar respectively, the separated water is conveyed to a raw gas-water separation system for recycling, the separated tar is conveyed to a tank area for storage and then sold, the separated tar residues are conveyed to a first receiving hopper 1 through a material conveying device or a large truck, a second receiving hopper 2 is used for containing coal powder, the first receiving hopper 1 and the second receiving hopper 2 are arranged in a pit, the first receiving hopper 1 and the second receiving hopper 2 are positioned below the ground, the coal powder and the tar residues are conveniently poured into the first receiving hopper 1 and the second receiving hopper 2, the coal powder and the tar residues are weighed through a weighing feeder 6, the coal powder and the tar residues can enter a double helix mixer 3 according to a preset proportion for fully contacting and mixing, the fully mixed materials enter a briquette pressing machine 5 through a second conveyor belt 8, so that spherical briquettes are formed, the briquettes finally enter a coal feeding system 10 of the fixed bed gasification furnace through a third conveyor belt 9, and finally the lump coal transported on the coal feeding system 10 and the briquettes enter the fixed bed gasification furnace through a feed hopper together for combustion to generate useful coal gas. The tar residue and the coal powder are fully mixed, so that the tar residue and the coal powder reach a proper mixing proportion for forming, then the briquette is made by a briquette ball press machine 5, and finally the briquette and the lump coal are returned to the fixed bed gasification furnace for gasification, the crude gas produced by the gasification of the briquette and the crude gas produced by the lump coal enter an original production system together, and purification and a next synthesis process are performed, so that the recycling of the tar residue is realized, and the purpose of recycling, reducing and harmlessly treating the tar residue is achieved.

The tar residue recycling method comprises the following steps:

conveying dust-containing tar generated in the coal gas-water separation process into a three-phase separator, separating water, tar and tar residues in the dust-containing tar by the three-phase separator, conveying the separated water into a raw coal gas-water separation system for recycling, conveying the separated tar to a tank area for storage, and selling the tar, conveying the separated tar residues into a first receiving hopper 1 by a material conveying device or a large truck, and using a second receiving hopper 2 for containing coal powder;

weighing the pulverized coal and the tar residues by a weighing feeder 6, feeding the pulverized coal and the tar residues into a double-helix mixer 3 according to a preset proportion for fully contacting and mixing, and feeding the fully mixed materials into a briquette ball press 5 through a second conveyor belt 8 so as to form spherical formed coal;

and step three, the formed coal enters a coal feeding system 10 of the fixed bed gasification furnace through a third conveyor belt 9, and finally, the lump coal which is transported on the coal feeding system 10 and the formed coal enter the fixed bed gasification furnace through a feed hopper together for combustion to generate useful coal gas.

Further, in the second step, the coal powder and the tar residues are subjected to the influence of water content and tar content of the tar residues according to the preset proportion in the preset proportion, and the blending proportion of the tar residues and the coal powder is properly adjusted to meet the requirement of molding the mixed material in a granulator. Neither can the particles be formed and dispersed nor can the formed particles be made too soft and stick to one another.

According to actual needs, the tar residue recycling system is further optimized or/and improved: further, as shown in fig. 1, pushing devices are installed in the first receiving hopper 1 and the second receiving hopper 2, each pushing device includes a motor 11, a stirring shaft 12 and a spiral auger blade 13, a frame is fixed at the upper feeding ports of the first receiving hopper 1 and the second receiving hopper 2, the motor 11 is installed on the frame, the stirring shaft 12 is installed on the rotating shaft of the motor 11 and extends into the corresponding receiving hopper, and the spiral auger blade 13 is fixedly connected to the outer wall of the stirring shaft 12. Through setting up blevile of push, can make the material in first receiving hopper 1 and the second receiving hopper 2 more smoothly enter into weighing feeder 6 in, prevent that the material from causing the not smooth problem of unloading because of piling up.

Further, as shown in fig. 1, there are two double-screw mixers 3, the two double-screw mixers 3 are connected in series from front to back, the feeding end of the first double-screw mixer 3 corresponds to the first conveyor belt 7, the discharging end of the first double-screw mixer 3 is communicated with the feeding end of the second double-screw mixer 3, and the discharging end of the second double-screw mixer 3 corresponds to the second conveyor belt 8.

The two double-helix mixers 3 are arranged, so that the pulverized coal and the tar residues can be mixed more fully, the quality of the finally generated molded coal in the molded coal ball press machine 5 is better, and the molded coal can be better combusted and generate coal gas when entering the fixed bed gasification furnace.

The foregoing description is by way of example only and is not intended as limiting the embodiments of the present application. All obvious variations and modifications of the present invention are within the scope of the present invention.