CN111285422B - Integrated form MVR evaporation concentration device - Google Patents
Integrated form MVR evaporation concentration device Download PDFInfo
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- CN111285422B CN111285422B CN202010094085.XA CN202010094085A CN111285422B CN 111285422 B CN111285422 B CN 111285422B CN 202010094085 A CN202010094085 A CN 202010094085A CN 111285422 B CN111285422 B CN 111285422B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention provides an integrated MVR evaporation concentration device, which comprises a device shell, wherein the lower end of the device shell is provided with a booster pump, the booster pump is arranged in a raw material water cavity, heated raw material water is pumped into a separator cavity, a heat exchange tube cavity is connected with the raw material water cavity and the separator cavity, and two ends of a heat exchange tube are respectively connected with the separator cavity and the raw material water cavity and are used for evaporation heat exchange and partial raw material liquid backflow; the compressor is installed to device casing upper end, and the steam pressure boost that produces in the compressor will the separator, and the exhaust passage through setting up in the device casing gets into the heat transfer lumen, and the comdenstion water after the heat transfer passes through comdenstion water channel and gets into the comdenstion water chamber, sets up the comdenstion water export in the comdenstion water chamber, and the raw materials water chamber sets up the concentrate export. The invention supplements the heat loss of the system with auxiliary heating, has no external pipeline connection, and realizes the microminiaturization of the MVR system; the booster pump has low power consumption and high heat transfer efficiency; the heat exchange area is low, and the heat exchange efficiency in the evaporation-condenser is high; fully retrieves the comdenstion water heat, and the system is efficient.
Description
Technical Field
The invention relates to an integrated MVR evaporation and concentration device, and belongs to the technical field of wastewater treatment.
Background
The industrial salt-containing wastewater is mainly treated by a membrane method and an evaporation method, the membrane method is not suitable for treating the high salt-containing wastewater, the multi-effect evaporation system has high energy consumption, and a Mechanical Vapor Recompression (MVR) system is a main technical means for solving the problem at present. The MVR system comprises an evaporation-condenser, a compressor, a pump and other components, and can directly concentrate and purify waste water (sewage enters, clean water and concentrated solution exits).
For MVR systems in the fields of industrial wastewater treatment, material concentration and the like, the treatment capacity is generally more than 0.5t/h, a centrifugal compressor or a screw compressor is adopted, so that the occupied area of equipment is large, wherein the equipment such as the compressor, a heat exchanger, a pump and the like are connected by pipeline valves, the structural integration degree is low, the heat loss of a pipeline is large, the MVR system is not suitable for the treatment of micro-flow wastewater and environments with high requirements on installation space, and the MVR system cannot meet the requirements in the treatment of micro-flow wastewater in machine tool wastewater, electroplating workshops and the like. Therefore, compactness and high efficiency are the problems faced by the MVR system, and an MVR device with high integration level and compact structure is urgently needed in the micro-flow wastewater treatment.
Disclosure of Invention
In order to overcome the problems, the invention provides an integrated MVR evaporation concentration device, provides an integrated compact structure and solves the technical problem that an MVR system cannot be miniaturized.
In order to solve the problems in the prior art, the invention adopts the technical scheme that: an integrated MVR evaporation concentration device comprises a device shell, wherein a booster pump is arranged at the lower end of the device shell, the booster pump is arranged in a raw material water cavity, heated raw material water is pumped into a separator cavity, a heat exchange tube cavity is connected with the raw material water cavity and the separator cavity, and two ends of a heat exchange tube are respectively connected with the separator cavity and the raw material water cavity and are used for evaporation heat exchange and partial raw material liquid backflow; the compressor is installed to device casing upper end, and the steam pressure boost that produces in the compressor will the separator, and the exhaust passage through setting up in the device casing gets into the heat transfer lumen, and the comdenstion water after the heat transfer passes through comdenstion water channel and gets into the comdenstion water chamber, sets up the comdenstion water export in the comdenstion water chamber, and the raw materials water chamber sets up the concentrate export.
Furthermore, the comdenstion water chamber encircles outside the raw materials water chamber, and the inlet tube penetrates the comdenstion water chamber wall and is located this cavity, and coils the preheating coil connection outside the raw materials water chamber, and the water inlet in raw materials water chamber is connected to the other end of preheating coil, and comdenstion water chamber upper end is through comdenstion water wash port and heat transfer lumen intercommunication.
Furthermore, the compressor is installed in the exhaust chamber, the compressor is connected with a compressor motor located outside the exhaust chamber, a demister is arranged between the compressor and the separator cavity, the exhaust chamber is arranged around the separator cavity, the exhaust chamber is communicated with one end of the exhaust chamber through an exhaust through hole, and the other end of the exhaust chamber is communicated with the heat exchange tube cavity through a heat exchange through hole.
Furthermore, the booster pump is connected with a booster pump motor positioned outside the raw material water cavity.
Further, an electric heater is arranged in the raw material water cavity.
Furthermore, the booster pump is connected with a falling film type liquid lifting pipe penetrating through the heat exchange pipe cavity, and heated raw material water is pumped into the separator cavity through the liquid lifting pipe.
The beneficial technical effects of the invention are as follows: the integrated structure of the compressor, the evaporation-condenser and the circulating pump is adopted, and external pipelines are not needed to be connected among the devices, so that the microminiaturization of the MVR system is realized; a falling film type liquid lifting pipe is adopted in the middle of the evaporator and the condenser, so that the power consumption of the pump can be reduced, and the heat transfer efficiency is improved; the exhaust passage chamber reduces the superheat degree of steam at the outlet of the compressor, improves the heat exchange efficiency in the evaporation-condenser and reduces the heat exchange area; a preheating coil is arranged in the condensed water chamber, raw water enters the raw water cavity after passing through the preheating coil, the heat of the condensed water is fully recovered, and the system efficiency is improved; and an electric heating aid is arranged for preheating the system during starting to supplement the heat loss of the system.
Drawings
The technical solution of the present invention is described in detail below with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. the device comprises a water inlet pipe, 2, a condensate water drain hole, 3, a liquid lifting pipe, 4, a heat exchange pipe cavity, 5, a separator cavity, 6, a demister, 7, a compressor, 8, a compressor motor, 9, an exhaust chamber, 10, an exhaust through hole, 11, an exhaust passage chamber, 12, a heat exchange through hole, 13, a condensate water cavity, 14, a condensate water outlet, 15, a concentrate outlet, 16, a booster pump motor, 17, a booster pump, 18, a raw material water cavity, 19, an electric heater, 20 and a preheating coil pipe.
Detailed Description
As shown in fig. 1, the integrated MVR evaporation concentration device comprises a device shell, wherein a booster pump 17 is installed at the lower end of the device shell, the booster pump 17 is installed in a raw material water cavity 18, heated raw material water is pumped into a separator cavity 5, a heat exchange tube cavity 4 is connected with the raw material water cavity 18 and the separator cavity 5, and two ends of a heat exchange tube are respectively connected with the separator cavity 18 and the raw material water cavity 5 and used for heat exchange reflux; the compressor 7 is installed at the upper end of the device shell, the compressor 7 pressurizes steam generated in the separator, the steam enters the heat exchange tube cavity 4 through an exhaust passage arranged in the device shell, condensed water of heat exchange enters the condensed water cavity 13 through the condensed water passage, a condensed water outlet 14 is arranged in the condensed water cavity 13, and a concentrated solution outlet 15 is arranged in the raw material water cavity 18.
As a preferred design, the condensed water cavity 13 surrounds the raw material water cavity 18, the water inlet pipe 1 penetrates through the wall of the condensed water cavity and is positioned in the cavity, the preheating coil 20 wound outside the raw material water cavity is connected, the other end of the preheating coil 20 is connected with the water inlet of the raw material water cavity 18, and the upper end of the condensed water cavity 13 is communicated with the heat exchange pipe cavity 4 through the condensed water drain hole 2.
As a preferable design, the compressor 7 is arranged in the exhaust chamber 9, the compressor 7 is connected with a compressor motor 8 positioned outside the exhaust chamber, a demister 6 is arranged between the compressor 7 and the separator cavity 5, an exhaust chamber 11 is arranged outside the separator cavity 5 in a surrounding manner, the exhaust chamber 9 is communicated with one end of the exhaust chamber 11 through an exhaust through hole 10, and the other end of the exhaust chamber 11 is communicated with the heat exchange tube cavity 4 through a heat exchange through hole 12.
As a preferable design, the booster pump 17 is connected with a booster pump motor 16 which is positioned outside the raw water cavity.
In a preferred design, an electric heater 19 is arranged in the raw water cavity 18.
In a preferred design, the booster pump 17 is connected to the lift tube 3 extending through the heat exchange tube chamber 4, and the heated raw water is pumped into the separator chamber 5 through the lift tube 3.
Raw material water enters the raw material water cavity 18 from the water inlet pipe 1 after passing through the preheating coil 20, enters the separator cavity 5 along the liquid lifting pipe 3 after being pressurized by the booster pump 17, and returns to the raw material water cavity 18 along the heat exchange pipe after being uniformly distributed. Steam generated in the separator cavity 5 enters the compressor 7 after foam is removed by the foam remover 6, high-temperature and high-pressure steam obtained after pressurization by the compressor 7 enters the exhaust passage chamber 11 through the exhaust through hole 10, then enters the heat exchange tube cavity 4 through the heat exchange through hole 12 and heats raw material water in the heat exchange tube, and condensed water obtained after heat exchange enters the condensed water cavity 13 along the condensed water drain hole 2 and then is discharged out of the device through the condensed water outlet 14. The concentrate produced at the bottom of the feed water chamber exits the apparatus through a concentrate outlet 15. The exhaust chamber 11 recovers the exhaust heat of the compressor, reduces the superheat degree of steam entering the outer side of the heat exchange tube, improves the heat exchange efficiency, reduces the size of an evaporation-condenser, and the preheating coil 20 recovers the condensed water heat in the condensed water cavity 13 for preheating raw water.
Compared with the prior art, the invention has the following characteristics:
1. the invention adopts the integrated structure of the compressor, the evaporation-condenser, the circulating pump and the like, and the equipment does not need to be connected by an external pipeline, thereby realizing the microminiaturization of the MVR system.
2. The falling film type liquid lifting pipe is adopted in the middle of the evaporator and the condenser, so that the power consumption of the pump can be reduced, and the heat transfer efficiency is improved.
3. The exhaust passage chamber is arranged for reducing the superheat degree of steam at the outlet of the compressor, improving the heat exchange efficiency in the evaporation-condenser and reducing the heat exchange area.
4. The preheating coil is arranged in the condensed water chamber, raw water enters the raw water cavity after passing through the preheating coil, the heat of the condensed water is fully recovered, and the system efficiency is improved.
5. The electric heating is arranged for assisting in preheating the system during starting, and the heat loss of the system can be supplemented.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention.
Claims (2)
1. An integrated form MVR evaporation concentration device, includes the device casing, its characterized in that: the lower end of the device shell is provided with a booster pump, the booster pump is arranged in a raw material water cavity, the booster pump is connected with a falling film type riser tube penetrating through a heat exchange tube cavity, heated raw material water is pumped into a separator cavity through the riser tube, the heat exchange tube cavity is connected with the raw material water cavity and the separator cavity, and two ends of a heat exchange tube are respectively connected with the separator cavity and the raw material water cavity and are used for evaporation heat exchange and partial raw material liquid backflow; the upper end of the device shell is provided with a compressor, the compressor pressurizes steam generated in the separator, the steam enters a heat exchange tube cavity through an exhaust channel arranged in the device shell, condensed water after heat exchange enters a condensed water cavity through the condensed water channel, the condensed water cavity is provided with a condensed water outlet, a raw water cavity is provided with a concentrated solution outlet, the condensed water cavity surrounds the raw water cavity, a water inlet pipe penetrates through the wall of the condensed water cavity and is connected with a preheating coil which is positioned in the cavity and is wound outside the raw water cavity, the other end of the preheating coil is connected with a water inlet of the raw water cavity, the upper end of the condensed water cavity is communicated with the heat exchange tube cavity through a condensed water drain hole, the compressor is arranged in the exhaust chamber, the compressor is connected with a compressor motor positioned outside the exhaust chamber, a demister is arranged between the compressor and the separator cavity, an exhaust passage chamber is wound outside the separator cavity, and the exhaust chamber is communicated with one end of the exhaust passage chamber through an exhaust through hole, the other end of the exhaust passage chamber is communicated with the heat exchange tube cavity through a heat exchange through hole, and an electric heater is arranged in the raw material water cavity.
2. The integrated MVR evaporative concentration device of claim 1, wherein: the booster pump is connected with a booster pump motor positioned outside the raw material water cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010094085.XA CN111285422B (en) | 2020-02-15 | 2020-02-15 | Integrated form MVR evaporation concentration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010094085.XA CN111285422B (en) | 2020-02-15 | 2020-02-15 | Integrated form MVR evaporation concentration device |
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| CN111285422A CN111285422A (en) | 2020-06-16 |
| CN111285422B true CN111285422B (en) | 2022-04-12 |
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| CN113262512A (en) * | 2021-07-06 | 2021-08-17 | 山东意威尔环境科技有限公司 | Disc type film distribution evaporator |
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| CN108686393A (en) * | 2018-07-15 | 2018-10-23 | 湖北开元化工科技股份有限公司 | Concentration technology in ammonium sulfate waste water MVR evaporation and crystallization system processing procedures |
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| CN2705219Y (en) * | 2004-05-20 | 2005-06-22 | 淄博华周制药设备有限公司 | Double section type screen separating evaporator |
| CN201978514U (en) * | 2010-04-22 | 2011-09-21 | 姜广义 | Forced reverse circulating evaporator for steam |
| MX2013008726A (en) * | 2011-01-27 | 2013-12-16 | 1Nsite Technologies Ltd | Compact evaporator for modular portable sagd process. |
| CN202777833U (en) * | 2012-01-19 | 2013-03-13 | 重庆远达水务有限公司 | Mechanical vapor recompression evaporator |
| KR101577133B1 (en) * | 2014-04-14 | 2015-12-11 | 선테코 유한회사 | Distillation system using multi stage stripper capable of integrated operation and reduction of steam consumption |
| CN106582056A (en) * | 2016-12-26 | 2017-04-26 | 江苏乐科节能科技股份有限公司 | Double-stroke forced circulation type heat exchange and crystallization integrated device and working method thereof |
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|---|---|---|---|---|
| JPH09173047A (en) * | 1995-12-28 | 1997-07-08 | Satsuma Shuzo Kk | Simplex distillation equipment using steam ejector |
| CN102989181A (en) * | 2012-12-17 | 2013-03-27 | 李锦龙 | Compound type monomer multi-effect steam mechanical recompression evaporator |
| KR101791621B1 (en) * | 2016-06-30 | 2017-11-20 | 한국해양과학기술원 | Apparatus of membrane distillation desalination and concentrating extraction from seawater using heat pump |
| CN207970468U (en) * | 2018-02-11 | 2018-10-16 | 哈尔滨理工大学 | A kind of MVR evaporation concentration systems |
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