阅读说明：本技术 低温真空蒸发设备 (Low-temperature vacuum evaporation equipment ) 是由 路建伟 刘威 汪彗星 何海礁 于 2020-12-01 设计创作，主要内容包括：本申请涉及一种低温真空蒸发设备,其包括：作为蒸馏主体的一体式蒸发罐,一体式蒸发罐内被分隔形成有第一空间和第二空间,第二空间设置在第一空间的上方；设置在第一空间内的第一换热器,第一空间内的液体被第一换热器加热后,形成蒸汽进入至第二空间；设置在第二空间内的第二换热器,第二空间内的蒸汽被被第二换热器冷凝后,形成液体存储在第二空间内；连接一体式蒸发罐的蒸馏水罐；连接第一换热器和第二换热器的热泵系统；以及,减压装置,用于对一体式蒸发罐进行抽真空。该低温真空蒸发设备在保证蒸发效率和出水水质的同时,减小了设备的占地面积和成本。(The application relates to a low temperature vacuum evaporation apparatus, it includes: an integrated evaporation tank as a distillation main body, wherein a first space and a second space are formed in the integrated evaporation tank in a separated mode, and the second space is arranged above the first space; the first heat exchanger is arranged in the first space, and liquid in the first space is heated by the first heat exchanger to form steam which enters the second space; the second heat exchanger is arranged in the second space, and vapor in the second space is condensed by the second heat exchanger to form liquid which is stored in the second space; a distilled water tank connected with the integrated evaporating tank; a heat pump system connecting the first heat exchanger and the second heat exchanger; and the pressure reducing device is used for vacuumizing the integrated evaporating pot. The low-temperature vacuum evaporation equipment reduces the occupied area and the cost of the equipment while ensuring the evaporation efficiency and the effluent quality.)

1. A low temperature vacuum evaporation apparatus, comprising:

an integrated evaporation tank as a distillation main body, wherein a first space and a second space are formed in the integrated evaporation tank in a separated mode, and the second space is arranged above the first space; the first heat exchanger is arranged in the first space, and liquid in the first space is heated by the first heat exchanger to form steam which enters the second space; the second heat exchanger is arranged in the second space, and vapor in the second space is condensed by the second heat exchanger to form liquid which is stored in the second space;

the distilled water tank is connected with the integrated evaporating tank;

the heat pump system is connected with the first heat exchanger and the second heat exchanger;

and the number of the first and second groups,

and the pressure reducing device is used for vacuumizing the integrated evaporating pot.

2. The cryogenic vacuum evaporation apparatus of claim 1, wherein a steam pipe and a partition plate are further provided in the integrated evaporation tank, the steam pipe being provided through the partition plate, the partition plate dividing the integrated evaporation tank into the first space and the second space.

3. The cryogenic vacuum evaporation apparatus of claim 2, wherein the steam pipe comprises a first pipe and a second pipe connected to the first pipe, the first pipe being disposed in a vertical direction of the evaporation tank through the partition plate, one end of the second pipe being connected to the first pipe, and the other end of the second pipe being disposed obliquely downward of the first pipe.

4. The low-temperature vacuum evaporation apparatus according to claim 2, wherein one or more of the partitions are provided, and when a plurality of the partitions are provided, a connecting pipe is further provided to communicate the plurality of the partitions.

5. A cryogenic vacuum evaporation apparatus as claimed in claim 2, wherein a vapor purification device is further provided in the evaporation tank, and wherein a vapor purification device is further provided in the evaporation tank to filter out insoluble impurities in the vapor and the solution.

6. The low-temperature vacuum evaporation equipment as claimed in claim 5, wherein the steam purification device comprises a plurality of anti-entrainment baffles which are arranged along the vertical direction of the evaporation tank in a staggered manner, and a first support screen plate which is arranged above the anti-entrainment baffles, and the first support screen plate is provided with replaceable purification filler.

7. The low-temperature vacuum evaporation apparatus according to claim 6, wherein the vapor purification device further comprises a second support screen plate disposed above the partition plate, and the second support screen plate is provided with a replaceable purification filler.

8. The low-temperature vacuum evaporation device according to claim 1, wherein the first heat exchanger and the second heat exchanger comprise a plurality of mosquito coil coils, a third pipeline and a fourth pipeline which are arranged in parallel and in parallel along an axial direction, the axial direction is perpendicular to the radial direction of the mosquito coil coils, the inlet of each mosquito coil is connected with the third pipeline, and the outlet of each mosquito coil is connected with the fourth pipeline, so that a heat exchange medium can flow into each mosquito coil through the third pipeline and flow out of the fourth pipeline.

9. A cryogenic vacuum evaporation apparatus as claimed in claim 8, wherein each coil is arranged such that the heat transfer medium flows from the inlet into the inside of the coil and spirals outward and out of the outlet.

10. A cryogenic vacuum evaporation apparatus as claimed in claim 1, wherein the heat pump system comprises a compressor connected to the first heat exchanger and a throttling device connected to the second heat exchanger, the compressor being connected to the throttling device.

Technical Field

The invention relates to low-temperature vacuum evaporation equipment, and belongs to the field of environment-friendly equipment.

Background

The discharge of industrial waste liquid causes serious environmental pollution, in order to protect the environment, the sewage discharge needs to be strictly controlled, each enterprise producing the industrial waste liquid needs to discharge the sewage after the sewage is treated by a special sewage treatment plant, and the sewage treatment plant generally charges according to the treatment capacity, for example, one ton and several thousand yuan, so the cost of the enterprise on the sewage treatment is also greatly increased. The heat pump technology is an efficient and environment-friendly energy-saving technology, and can be widely applied to the industrial production fields of chemical industry, low-grade heat energy utilization, seawater desalination, sewage treatment and the like. After the evaporation and concentration by the heat pump, distilled water meeting the discharge standard can be extracted from the sewage, the distilled water can be directly discharged, and the remaining concentrate is discharged to a sewage treatment plant for treatment. The sewage treatment cost of an enterprise can be greatly reduced, for example, 10 tons of sewage can be decomposed into 9 tons of distilled water and 1 ton of concentrate after evaporation concentration, and the enterprise only needs to spend the cost of 1 ton of treatment capacity, so that the sewage treatment cost is greatly reduced.

At present, the existing evaporator adopts three pots of an evaporating pot, a condensing pot and a distilled water pot to work, the occupied area and the cost are higher, and the evaporation effect can not be guaranteed, and meanwhile, the small-volume requirement of customers can not be met.

Disclosure of Invention

The invention aims to provide low-temperature vacuum evaporation equipment, which integrates a traditional condensing tank and an evaporation tank, ensures evaporation efficiency and reduces the occupied area and cost of the equipment.

In order to achieve the purpose, the invention provides the following technical scheme: a low temperature vacuum evaporation apparatus comprising:

an integrated evaporation tank as a distillation main body, wherein a first space and a second space are formed in the integrated evaporation tank in a separated mode, and the second space is arranged above the first space; the first heat exchanger is arranged in the first space, and liquid in the first space is heated by the first heat exchanger to form steam which enters the second space; the second heat exchanger is arranged in the second space, and vapor in the second space is condensed by the second heat exchanger to form liquid which is stored in the second space;

the distilled water tank is connected with the integrated evaporating tank;

the heat pump system is connected with the first heat exchanger and the second heat exchanger;

and the number of the first and second groups,

and the pressure reducing device is used for vacuumizing the integrated evaporating pot.

Further, still be equipped with steam pipe and baffle in the integral type evaporating pot, the steam pipe passes the baffle setting, the baffle will the integral type evaporating pot is separated into first space and second space.

Further, the steam pipe comprises a first pipeline and a second pipeline connected with the first pipeline, the first pipeline penetrates through the partition plate and is arranged along the vertical direction of the evaporation tank, one end of the second pipeline is connected with the first pipeline, and the other end of the second pipeline is arranged along the oblique lower side of the first pipeline.

Furthermore, one or more of the partition plates are arranged, and when the partition plates are arranged, a connecting pipe is also arranged to communicate the partition plates.

Furthermore, still be equipped with steam purification device in the evaporating pot to filter the insoluble impurity in steam and the solution.

Further, steam purification device includes along a plurality of baffles of preventing smuggleing secretly of the vertical direction dislocation set of evaporating pot to and set up and prevent pressing from both sides the first support otter board of taking baffle top, be equipped with removable purification filler on the first support otter board.

Furthermore, the steam purification device also comprises a second support screen plate arranged above the partition plate, and the second support screen plate is provided with replaceable purification filler.

Further, first heat exchanger and second heat exchanger include a plurality of parallelly connected and along the mosquito-repellent incense coil, third pipeline and the fourth pipeline of axial parallel arrangement, the axial perpendicular to the radial of mosquito-repellent incense coil, each the import of mosquito-repellent incense coil with the third pipe connection, each the export of mosquito-repellent incense coil with the fourth pipe connection to make heat transfer medium can pass through the third pipeline flows in each mosquito-repellent incense coil, by the fourth pipeline flows out.

Further, each mosquito coil is arranged in such a way that the heat exchange medium flows into the inner side of the mosquito coil from the inlet and is coiled to the outer side to be output from the outlet.

Further, the heat pump system comprises a compressor connected with the first heat exchanger and a throttling device connected with the second heat exchanger, and the compressor is connected with the throttling device.

Compared with the prior art, the invention has the beneficial effects that: the low-temperature vacuum evaporation equipment is provided with the integrated evaporation tank to replace the original condensation tank and the original evaporation tank, and meanwhile, the integrated evaporation tank is internally provided with the partition plate, the baffle plate and the support screen plate to ensure that the formed distilled water does not contain other insoluble impurities, so that the floor area and the cost of the equipment are reduced while the evaporation efficiency and the effluent quality are ensured.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a flow chart of a low temperature vacuum evaporation apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an internal structure of an integrated evaporator tank in a low-temperature vacuum evaporation apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic external view of an integrated evaporator tank of a low-temperature vacuum evaporation apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a steam pipe in the low-temperature vacuum evaporation apparatus according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first/second heat exchanger in a low-temperature vacuum evaporation apparatus according to an embodiment of the present invention.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

It should be noted that: the terms "upper", "lower", "left", "right", "inner" and "outer" of the present invention are used for describing the present invention with reference to the drawings, and are not intended to be limiting terms.

Referring to fig. 1 to 5, a low-temperature vacuum evaporation apparatus according to an embodiment of the present invention includes an integrated evaporation tank, in which a first heat exchanger 1 and a second heat exchanger 2 are disposed. Wherein, be provided with baffle 3 and steam pipe 4 in the integral type evaporating pot 10, baffle 3 separates integral type evaporating pot 10 and forms first space 101 and second space 102, and second space 102 sets up the top of first space 101, and the waste liquid in the evaporating pot is heated by first heat exchanger 1 and is evaporated in first space 101, enters into second space 102 through steam pipe 4 after forming steam, is subsequently condensed by second heat exchanger 2 to store in the baffle 3 top.

Specifically, a through hole for the steam pipe 4 to pass through is formed in the partition plate 3, a waterproof sealing member is arranged at the joint, the steam pipe 4 comprises a first pipeline 41 and a second pipeline 42 connected with the first pipeline 41, the first pipeline 41 passes through the partition plate 3 and is arranged along the vertical direction of the evaporation tank, one end of the second pipeline 42 is connected with the first pipeline 41, and the other end of the second pipeline is arranged along the oblique lower side of the first pipeline 41. With the steam pipe 4 configured in this way, it is ensured that steam cannot fall back into the first space 101 from the steam pipe 4.

When the steam is in the second space 102, the steam is condensed by the second heat exchanger 2 to form distilled water, in this embodiment, two partition plates 3 are disposed in the evaporation tank, the two partition plates 3 are communicated with each other by a connecting pipe 30, and a water outlet 104 is disposed at a corresponding position of the evaporation tank. However, in other embodiments, one or more than three partition plates 3 may be provided, and when a plurality of partition plates 3 are provided, a connection pipe 30 is further provided to connect the plurality of partition plates 3.

In order to ensure the quality of the discharged water, in this embodiment, a steam purification device 5 is further disposed in the evaporation tank, and the evaporation tank is further provided with the steam purification device 5 to filter insoluble impurities in the steam and the solution. Specifically, steam purification device 5 includes along a plurality of baffle 51 of preventing smuggleing secretly of the vertical direction dislocation set of evaporating pot, sets up the first support otter board 52 in preventing that the pinch keeps off baffle 51 top to and set up the second support otter board 53 in baffle 3 top, and all be equipped with on first support otter board 52 and the second support otter board 53 and purify the filler, preferably, adopt pall ring labyrinth to pack. The evaporation tank is provided with a manhole 103 at a corresponding position, and the pall ring labyrinth packing can be added and replaced through the manhole 103. Compare in traditional silk screen demister, adopt the structure of this embodiment, can not the scale deposit and block up and removable reuse, maintenance and maintenance cost reduce.

In this embodiment, two baffle 51 of preventing smuggleing secretly misplacing in vertical direction, the steam that waste water evaporation formed is at ascending in-process, and foam and other impurity are prevented pressing from both sides and take the baffle 51 separation, attach on the baffle 51 of preventing smuggleing secretly, and gaseous then prevents through two and smuggleing the interval between the baffle 51 and continue to rise. Indeed, in other embodiments, a greater number of anti-pinch belt baffles 51 may be used.

In this embodiment, the first heat exchanger 1 and the second heat exchanger 2 in the evaporation tank are coil heat exchangers formed by a plurality of mosquito coil tubes 11 arranged in parallel and in parallel along the axial direction (shown in the Z direction in fig. 5). Specifically, the coil heat exchanger comprises a mosquito coil 11, a fixing device 12, a third pipeline 13 and a fourth pipeline 14. The mosquito coil coils 11 are vertically and parallelly fixed on the fixing device 12, the third pipeline 13 and the fourth pipeline 1434 are arranged on the periphery of the mosquito coil coils 11, the axial direction of the third pipeline is perpendicular to the radial direction (shown in the direction M in fig. 5) of the mosquito coil coils 11, and through holes (not shown) for respectively connecting each mosquito coil 11 are arranged on the third pipeline 13 and the fourth pipeline 14. The heat exchange medium is uniformly distributed into each mosquito coil 11 through the third pipeline 13 and then collected and output from the fourth pipeline 14.

In this embodiment, each coil 11 is configured to output fluid from the inside of the coil 11 to the outside, specifically, the inside of the coil 11 is connected to the third pipe 13, and the outside of the coil 11 is connected to the fourth pipe 14. By adopting the arrangement mode, the system pressure drop of the fluid in the mosquito coil 11 can be avoided, thereby ensuring the stability of the heat exchange efficiency.

In this embodiment, the fixing device 12 corresponds to a plurality of fixing plates 121 arranged at intervals along the circumferential direction (shown in the direction N in fig. 5) of the mosquito coil 11 and a positioning plate 122 arranged on the outer periphery of the mosquito coil 11, each fixing plate 121 is arranged to extend along the radial direction M, a slot 123 corresponding to the diameter of the mosquito coil 11 is arranged on the fixing plate 121, and the fixing plate 121 is fixed on the positioning plate 122. Specifically, a plurality of positioning plates 122 are uniformly arranged on the periphery of the mosquito coil 11 (in this embodiment, four positioning plates 122 are uniformly arranged on the periphery of the mosquito coil 11), the fixing plate 121 is arranged layer by layer in the vertical direction of the positioning plates 122, and the pipe of each mosquito coil 11 is clamped in the clamping groove 123 one by one. Preferably, a gap is formed between adjacent mosquito coil pipes 11, so that the heat exchange area is increased and the later maintenance is facilitated.

The traditional coil heat exchanger has the advantages that when the rated heat exchange area is fixed, the span of a single whole group of coils is large, so that the manufacturing difficulty is large, the energy of a heat exchange medium cannot be fully converted, and the heat exchange efficiency is low. And the multiunit mosquito coil 11 of this application connects in parallel and parallel arrangement, and reducible its span and refrigerant (also be heat transfer medium) are at the circulation distance of its in, guarantee that its heat exchange efficiency is high and stable, are convenient for make simultaneously and dismouting installation to make things convenient for later maintenance and maintenance.

Still include distilled water jar 6, heat pump system 7 and pressure relief device 8 among the low temperature vacuum evaporation equipment of this application, it is specific, distilled water jar 6 and integral type evaporating pot 10 intercommunication, pressure relief device 8 sets up in distilled water jar 6 to carry out the evacuation to distilled water jar 6 and integral type evaporating pot 10. The heat pump system 7 includes a compressor 71 and an expansion valve 72 (a throttle device), and the refrigerant is compressed by the compressor 71, releases a large amount of heat, and enters the first heat exchanger 1 to heat the waste liquid in the first space 101. The refrigerant is throttled by the expansion valve 72 to absorb a large amount of heat and enters the second heat exchanger 2 for condensing the vapor in the second space 102. The distilled water formed by condensing the steam is discharged into the distilled water tank 6, in this embodiment, a third heat exchanger 9 is further disposed in the distilled water tank 6, and the refrigerant may enter the third heat exchanger 9 first and then enter the second heat exchanger 2. By arranging the third heat exchanger 9, when the equipment is started, the refrigerant in the third heat exchanger 9 can be preheated by the hot gas refrigerant compressed by the compressor 71, so as to provide more gaseous refrigerant for the compressor 71. When the equipment is in normal operation, the third heat exchanger 9 is a low-temperature liquid refrigerant so as to cool the distilled water in the distilled water tank 6, so that the distilled water is used by the pressure reducing device 8.

In the present embodiment, the pressure reducing device 8 includes a centrifugal water pump 81 and a water jet 82, wherein the water jet 82 is communicated with the water outlet 104 of the integrated evaporation tank 10.

In summary, the following steps: the low-temperature vacuum evaporation equipment is provided with the integrated evaporation tank to replace the original condensation tank and the original evaporation tank, and meanwhile, the integrated evaporation tank is internally provided with the partition plate, the baffle plate and the support screen plate to ensure that the formed distilled water does not contain other insoluble impurities, so that the floor area and the cost of the equipment are reduced while the evaporation efficiency and the effluent quality are ensured.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.