CN210505644U - Anti-blocking MVR evaporation crystallization system - Google Patents
Anti-blocking MVR evaporation crystallization system Download PDFInfo
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- CN210505644U CN210505644U CN201921181107.5U CN201921181107U CN210505644U CN 210505644 U CN210505644 U CN 210505644U CN 201921181107 U CN201921181107 U CN 201921181107U CN 210505644 U CN210505644 U CN 210505644U
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Abstract
The utility model discloses a prevent MVR evaporation crystal system that blocks up, including evaporation crystallizer, vapor compressor, forced circulation heater, forced circulation pump, salt leg, still include salt thick liquid thickener, thick liquids distributor, desalination centrifuge, mother liquor jar, centrifugal pump, the salt leg passes through the pipeline and links to each other with salt thick liquid thickener, salt thick liquid thickener pass through the pipeline and link to each other with thick liquids distributor, thick liquids distributor passes through the pipeline and links to each other with desalination centrifuge, mother liquor jar respectively, links to each other through the pipeline between salt thick liquid thickener and the mother liquor jar, the mother liquor jar passes through the pipeline and links to each other with the centrifugal pump, the centrifugal pump pass through the pipeline and link to each other with evaporation crystallizer. The utility model discloses guarantee that the material is in the circulation flow state all the time, avoid thick liquids to produce static dead point at the evaporative concentration in-process, solved the pipeline and produced the crystallization and cause the jam, improved the continuity of the system's ejection of compact, reduced operating strength, solved the problem of MVR evaporative crystallization system at ejection of compact in-process pipe blockage.
Description
Technical Field
The utility model belongs to the technical field of chemical wastewater treatment equipment, specifically relate to a prevent MVR evaporation crystal system who blocks up.
Background
The mechanical vapor recompression technology is a mechanical vapor recompression technology for short, which utilizes secondary vapor generated by an evaporation system and energy thereof to improve low-grade vapor into a high-grade vapor heat source through mechanical work of a compressor. The circulation provides heat energy for the evaporation system, thereby reducing the requirement on external energy. MVR mainly applies to the evaporation concentration material, compares with traditional multiple-effect evaporation, has energy-conserving advantage, and when mechanical vapor recompression, the secondary steam that produces through mechanical drive's compressor with the evaporimeter compresses to higher pressure, gets into heater circulation through the quality (temperature, pressure, enthalpy value, result of use) that improves the secondary steam and uses. The operation of the evaporator heated by mechanical vapor recompression requires only little heat. The working principle of mechanical vapor recompression is similar to that of a heat pump, almost all vapor is compressed and recycled through electric energy, and only little raw vapor is needed for driving; the system requires little "waste heat" to condense.
With the popularization and use of the MVR system in China, a plurality of problems in use are exposed. Moreover, the technical level of the MVR in China is uneven, the technical immaturity causes the large-range introduction of the MVR technology to encounter obstacles, and how to ensure the continuous and stable operation of the system is a key problem to be faced by each MVR technology manufacturer and production and use unit.
In current MVR system, use the most extensive MVR forced circulation evaporimeter that is, however in the in-service use process, because material concentration is higher, at thick liquids ejection of compact in-process, produce crystallization stifled pipe phenomenon easily, direct influence system's continuous operation, and the user also often need spend a large amount of manpower and materials to handle the jam problem, and production efficiency is compelled to descend. Therefore, how to solve the problem of pipeline blockage in the discharging process of the MVR forced circulation evaporative crystallization system is about the popularization and development of the MVR energy-saving industry.
Disclosure of Invention
Aiming at the problems, the utility model makes up the defects of the prior art and provides an anti-blocking MVR evaporative crystallization system; the problem of pipeline jam that MVR evaporative crystallizer in the concentration process, because the partial material in the system is in factors such as dead point, valve are held back and autonomous system unstability arouses is mainly solved.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
The utility model relates to an anti-blocking MVR evaporative crystallization system, which comprises an evaporative crystallizer, a vapor compressor, a forced circulation heater, a forced circulation pump and a salt leg, wherein the evaporative crystallizer is respectively connected with the vapor compressor, the forced circulation heater and the forced circulation pump through pipelines; the method is characterized in that: the salt slurry evaporator comprises a salt slurry thickener, a slurry distributor, a desalting centrifuge, a mother liquor tank and a centrifugal pump, wherein the salt legs are connected with the salt slurry thickener through pipelines, the salt slurry thickener is connected with the slurry distributor through pipelines, the slurry distributor is respectively connected with the desalting centrifuge and the mother liquor tank through pipelines, the salt slurry thickener is connected with the mother liquor tank through pipelines, the mother liquor tank is connected with the centrifugal pump through pipelines, and the centrifugal pump is connected with an evaporation crystallizer through pipelines.
As a preferred scheme of the utility model, salt thick liquid thickener is the toper structure.
As another preferred scheme of the utility model, the salt slurry thickener with a conical structure is provided with a speed reducer system, a guide cylinder, a flow stabilizer, a conical frame type stirring shaft, a thick slurry discharging pipe orifice, a sampling pipe orifice, an inspection pipe orifice, a supernatant pipe orifice, a feeding pipe orifice and an exhaust pipe orifice; speed reducer system installation in the top outside top of salt thick liquid thickener, the draft tube set up in the top of salt thick liquid thickener, the current stabilizer set up in the inboard below in top of salt thick liquid thickener, awl frame (mixing) shaft set up in the salt thick liquid thickener, the speed reducer system link to each other with the top of awl frame (mixing) shaft, awl frame (mixing) shaft bottom to salt thick liquid thickener bottom.
As another preferred scheme of the utility model, the thick slurry discharging pipe orifice is arranged at the bottommost part of the salt slurry thickener, and the sampling pipe orifice and the inspection pipe orifice are respectively arranged at the side part of the bottom of the salt slurry thickener; the supernatant mouth of pipe set up in one side bottom of draft tube, feeding mouth of pipe, exhaust mouth of pipe set up respectively in the top side of salt thick liquid thickener, feeding mouth of pipe's lower extreme and current stabilizer intercommunication.
As another preferred scheme of the utility model, be connected with discharge pipeline on the salt leg, the salt leg passes through discharge pipeline and links to each other with the feeding mouth of pipe of salt thick liquid thickener, installs the hand switch valve on the discharge pipeline.
As another preferred scheme of the utility model, thick liquids distributor be the structure of falling the double peak, thick liquids distributor on be provided with a thick liquids feed inlet, two thick liquids discharge gate, thick liquids discharge gate that thick liquids feed inlet of thick liquids distributor passes through pipeline and salt thick liquid thickener links to each other, two thick liquids discharge gate of thick liquids distributor link to each other through the feeding mouth of pipe of pipeline and desalination centrifuge, mother liquor jar respectively.
In addition, the mother liquor tank is a buffer tank internally provided with a mechanical stirring shaft, so that slurry in the mother liquor is prevented from precipitating and blocking a pipeline; the top of the buffer tank body is provided with a feeding pipe orifice and an exhaust pipe orifice, and the bottom of the buffer tank body is provided with a discharging pipe orifice; the discharge pipe orifice at the bottom of the mother liquor tank is connected with the centrifugal pump through a pipeline.
The beneficial effects of the utility model.
The utility model provides a prevent MVR evaporative crystallization system who blocks up, the raw materials is from beginning to enter into evaporative crystallizer in, whole evaporative concentration in-process and centrifugal separation desalination guarantee that the material is in the circulation state of flowing all the time, avoid thick liquids to produce static dead point at the evaporative concentration in-process, solved the pipeline and produced the crystallization and cause the jam, improved the continuity of the system's ejection of compact, reduced operating strength, solved the problem of MVR evaporative crystallization system at ejection of compact in-process pipe blockage.
Drawings
In order to make the technical problem, technical scheme and beneficial effect that the utility model solved more clearly understand, it is right to combine the attached drawing and detailed description mode below the utility model discloses further detailed description. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.
Fig. 1 is a schematic view of the overall structure of the anti-blocking MVR evaporative crystallization system of the present invention.
Fig. 2 is an enlarged schematic structural view of the salt slurry thickener of the anti-blocking MVR evaporative crystallization system of the present invention.
The labels in the figure are: the system comprises an evaporative crystallizer 1, a vapor compressor 2, a forced circulation heater 3, a forced circulation pump 4, a salt leg 5, a salt slurry thickener 6, a slurry distributor 7, a desalting centrifuge 8, a mother liquor tank 9, a centrifugal pump 10, a manual switch valve 11 and a discharge pipeline 12, wherein the evaporative crystallizer, the vapor compressor, the forced circulation heater, the forced circulation pump 4, the salt leg 5, the salt slurry thickener 6, the slurry distributor 7, the desalting centrifuge 8, the mother liquor tank 10, the; 601 is a speed reducer system, 602 is a guide cylinder, 603 is a flow stabilizer, 604 is a tapered frame type stirring shaft, 605 is a thick slurry discharging pipe orifice, 606 is a sampling pipe orifice, 607 is an inspection pipe orifice, 608 is a supernatant pipe orifice, 609 is a feeding pipe orifice, and 610 is an exhaust pipe orifice.
Detailed Description
With reference to fig. 1, the utility model relates to an anti-blocking MVR evaporative crystallization system, including evaporative crystallizer 1, vapor compressor 2, forced circulation heater 3, forced circulation pump 4, salt leg 5, evaporative crystallizer 1 passes through the pipeline and links to each other with vapor compressor 2, forced circulation heater 3, forced circulation pump 4 respectively, connects salt leg 5 below evaporative crystallizer 1, and vapor compressor 2 passes through the pipeline and links to each other with forced circulation heater 3, and forced circulation heater 3 passes through the pipeline and links to each other with forced circulation pump 4; the method is characterized in that: still include salt thick liquid thickener 6, thick liquids distributor 7, desalination centrifuge 8, mother liquor jar 9, centrifugal pump 10, salt leg 5 passes through the pipeline and links to each other with salt thick liquid thickener 6, salt thick liquid thickener 6 passes through the pipeline and links to each other with thick liquids distributor 7, thick liquids distributor 7 pass through the pipeline and link to each other with desalination centrifuge 8, mother liquor jar 9 respectively, link to each other through the pipeline between salt thick liquid thickener 6 and the mother liquor jar 9, mother liquor jar 9 pass through the pipeline and link to each other with centrifugal pump 10, centrifugal pump 10 pass through the pipeline and link to each other with evaporative crystallizer 1.
The salt slurry thickener 6 is in a conical structure.
The salt slurry thickener 6 with the conical structure is provided with a speed reducer system 601, a guide cylinder 602, a flow stabilizer 603, a conical frame type stirring shaft 604, a thick slurry discharging pipe orifice 605, a sampling pipe orifice 606, an inspection pipe orifice 607, a supernatant pipe orifice 608, a feeding pipe orifice 609 and an exhaust pipe orifice 610; speed reducer system 601 install in the top outside top of salt thick liquid thickener 6, draft tube 602 set up in the top of salt thick liquid thickener 6, current stabilizer 603 set up in the inboard below in the top of salt thick liquid thickener 6, awl frame (mixing) shaft 604 set up in salt thick liquid thickener 6, speed reducer system 601 link to each other with the top of awl frame (mixing) shaft 604, awl frame (mixing) shaft 604 bottom to salt thick liquid thickener 6 bottom.
The thick slurry discharging pipe orifice 605 is arranged at the bottommost part of the salt slurry thickener 6, and the sampling pipe orifice 606 and the inspection pipe orifice 607 are respectively arranged at the side of the bottom part of the salt slurry thickener 6; the supernatant pipe orifice 608 is arranged at the bottom of one side of the guide shell 602, the feed pipe orifice 609 and the exhaust pipe orifice 610 are respectively arranged at the side of the top of the salt slurry thickener 6, and the lower end of the feed pipe orifice 609 is communicated with the flow stabilizer 603.
The salt leg 5 is connected with a discharge pipeline 12, the salt leg 5 is connected with a feeding pipe mouth 609 of the salt slurry thickener 6 through the discharge pipeline 12, and the discharge pipeline 12 is provided with a manual switch valve 11.
The slurry distributor 7 is of an inverted double-peak structure, the slurry distributor 7 is provided with a slurry feeding hole and two slurry discharging holes, the slurry feeding hole of the slurry distributor is connected with a thick slurry discharging pipe orifice 605 of the salt slurry thickener 6 through a pipeline, and the two slurry discharging holes of the slurry distributor 7 are respectively connected with a feeding pipe orifice of the desalting centrifuge 8 and a mother liquor tank 9 through pipelines.
It should be noted that the structure of the slurry distributor 7 is well known in the art, and will be described in detail herein: the slurry distributor is internally provided with a proportional and movable distribution module, and is characterized in that slurry crystallization blockage caused by the reduction of the flow velocity of fluid in equipment and pipelines due to throttling is avoided; the proportional type and movable type distribution modules of the slurry distributor consist of a screw type adjusting device and a fixed part, and the screw type adjusting device and the fixed part can ensure the adjusting precision of the proportional type and movable type distribution modules; the proportional and movable distribution module can ensure that the slurry continuously, quantitatively and uniformly enters the desalting centrifuge 8, and can ensure that the slurry always circularly flows when the desalting centrifuge 8 is overhauled and washed, so that the salt slurry is prevented from crystallizing and blocking a pipe; the slurry distributor 7 is also provided with an air outlet and a transparent sealing observation cover.
In addition, the mother liquor tank 9 is a buffer tank with a mechanical stirring shaft arranged inside, so that slurry in the mother liquor is prevented from precipitating and blocking a pipeline; the top of the buffer tank body is provided with a feeding pipe orifice and an exhaust pipe orifice, and the bottom of the buffer tank body is provided with a discharging pipe orifice; the discharge pipe mouth at the bottom of the mother liquor tank 9 is connected with a centrifugal pump 10 through a pipeline. The centrifugal pump 10 is used for ensuring that the slurry in the whole system flow path is always in a circulating flow state and returns to the evaporative crystallizer 1.
The utility model mainly solves the problem that the MVR evaporative crystallization system blocks equipment and pipelines in the process of treating chemical wastewater, and particularly solves the problem that the existing mainstream MVR evaporative crystallization system is unstable and is blocked by an automatic control valve; the MVR evaporative crystallization system is enabled to stop production from the feeding to the stopping of the operation, no dead angle of the material in the equipment and the pipeline in the whole process is ensured to be in a flowing state, the material is prevented from being gathered in the equipment and being crystallized and blocked in the pipeline, and the continuity and the stability of the operation of the system are ensured.
It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (6)
1. An anti-blocking MVR evaporative crystallization system comprises an evaporative crystallizer, a vapor compressor, a forced circulation heater, a forced circulation pump and salt legs, wherein the evaporative crystallizer is respectively connected with the vapor compressor, the forced circulation heater and the forced circulation pump through pipelines; the method is characterized in that: the salt slurry evaporator comprises a salt slurry thickener, a slurry distributor, a desalting centrifuge, a mother liquor tank and a centrifugal pump, wherein the salt legs are connected with the salt slurry thickener through pipelines, the salt slurry thickener is connected with the slurry distributor through pipelines, the slurry distributor is respectively connected with the desalting centrifuge and the mother liquor tank through pipelines, the salt slurry thickener is connected with the mother liquor tank through pipelines, the mother liquor tank is connected with the centrifugal pump through pipelines, and the centrifugal pump is connected with an evaporation crystallizer through pipelines.
2. The anti-blocking MVR evaporative crystallization system according to claim 1, wherein: the salt slurry thickener is in a conical structure.
3. The anti-blocking MVR evaporative crystallization system according to claim 2, wherein: the salt slurry thickener in a conical structure is provided with a speed reducer system, a guide cylinder, a flow stabilizer, a conical frame type stirring shaft, a thick slurry discharging pipe orifice, a sampling pipe orifice, an inspection pipe orifice, a supernatant pipe orifice, a feeding pipe orifice and an exhaust pipe orifice; speed reducer system installation in the top outside top of salt thick liquid thickener, the draft tube set up in the top of salt thick liquid thickener, the current stabilizer set up in the inboard below in top of salt thick liquid thickener, awl frame (mixing) shaft set up in the salt thick liquid thickener, the speed reducer system link to each other with the top of awl frame (mixing) shaft, awl frame (mixing) shaft bottom to salt thick liquid thickener bottom.
4. The anti-blocking MVR evaporative crystallization system according to claim 3, wherein: the thick slurry discharging pipe orifice is arranged at the bottommost part of the salt slurry thickener, and the sampling pipe orifice and the inspection pipe orifice are respectively arranged at the side part of the bottom of the salt slurry thickener; the supernatant mouth of pipe set up in one side bottom of draft tube, feeding mouth of pipe, exhaust mouth of pipe set up respectively in the top side of salt thick liquid thickener, feeding mouth of pipe's lower extreme and current stabilizer intercommunication.
5. The anti-blocking MVR evaporative crystallization system according to claim 1, wherein: the salt leg is connected with a discharging pipeline, the salt leg is connected with a feeding pipe orifice of the salt slurry thickener through the discharging pipeline, and a manual switch valve is arranged on the discharging pipeline.
6. The anti-blocking MVR evaporative crystallization system according to claim 1, wherein: the slurry distributor is of an inverted double-peak structure, a slurry feeding hole and two slurry discharging holes are formed in the slurry distributor, the slurry feeding hole of the slurry distributor is connected with a thick slurry discharging pipe orifice of the salt slurry thickener through a pipeline, and the two slurry discharging holes of the slurry distributor are connected with a desalting centrifuge and a feeding pipe orifice of a mother liquid tank through pipelines respectively.
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| CN201921181107.5U CN210505644U (en) | 2019-07-25 | 2019-07-25 | Anti-blocking MVR evaporation crystallization system |
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| CN201921181107.5U CN210505644U (en) | 2019-07-25 | 2019-07-25 | Anti-blocking MVR evaporation crystallization system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112010392A (en) * | 2020-09-21 | 2020-12-01 | 北京今大禹环境技术股份有限公司 | Crystallized salt separation system in high organic matter crystallized salt solution |
| CN112110517A (en) * | 2020-09-21 | 2020-12-22 | 北京今大禹环境技术股份有限公司 | Method for separating crystalline salt from high organic matter crystalline salt solution |
| CN113998825A (en) * | 2021-10-12 | 2022-02-01 | 铜陵有色金属集团股份有限公司 | Sodium nitrate evaporative crystallization device and application method thereof |
| CN114044597A (en) * | 2021-10-12 | 2022-02-15 | 铜陵有色金属集团股份有限公司 | Sodium sulfate evaporation crystallization device and use method thereof |
-
2019
- 2019-07-25 CN CN201921181107.5U patent/CN210505644U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112010392A (en) * | 2020-09-21 | 2020-12-01 | 北京今大禹环境技术股份有限公司 | Crystallized salt separation system in high organic matter crystallized salt solution |
| CN112110517A (en) * | 2020-09-21 | 2020-12-22 | 北京今大禹环境技术股份有限公司 | Method for separating crystalline salt from high organic matter crystalline salt solution |
| CN113998825A (en) * | 2021-10-12 | 2022-02-01 | 铜陵有色金属集团股份有限公司 | Sodium nitrate evaporative crystallization device and application method thereof |
| CN114044597A (en) * | 2021-10-12 | 2022-02-15 | 铜陵有色金属集团股份有限公司 | Sodium sulfate evaporation crystallization device and use method thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An anti blocking MVR evaporative crystallization system Effective date of registration: 20211013 Granted publication date: 20200512 Pledgee: Shengjing Bank Co.,Ltd. Fuxin branch Pledgor: FUXIN DUDLEY CHEMICAL Co.,Ltd. Registration number: Y2021210000068 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220817 Granted publication date: 20200512 Pledgee: Shengjing Bank Co.,Ltd. Fuxin branch Pledgor: FUXIN DUDLEY CHEMICAL CO.,LTD. Registration number: Y2021210000068 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |