CN113457185A - MVR evaporator capable of adjusting evaporation temperature according to different mother liquor temperature requirements and using method thereof - Google Patents
MVR evaporator capable of adjusting evaporation temperature according to different mother liquor temperature requirements and using method thereof Download PDFInfo
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- CN113457185A CN113457185A CN202110761955.9A CN202110761955A CN113457185A CN 113457185 A CN113457185 A CN 113457185A CN 202110761955 A CN202110761955 A CN 202110761955A CN 113457185 A CN113457185 A CN 113457185A
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- heat exchanger
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- 238000001704 evaporation Methods 0.000 title claims abstract description 63
- 230000008020 evaporation Effects 0.000 title claims abstract description 53
- 239000012452 mother liquor Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 239000002918 waste heat Substances 0.000 claims abstract description 32
- 238000000926 separation method Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 230000008676 import Effects 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 17
- 238000011084 recovery Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000009834 vaporization Methods 0.000 description 4
- 230000008016 vaporization Effects 0.000 description 4
- 239000010413 mother solution Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/28—Evaporating with vapour compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0018—Evaporation of components of the mixture to be separated
- B01D9/0031—Evaporation of components of the mixture to be separated by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses an MVR evaporator capable of adjusting evaporation temperature according to different mother liquor temperature requirements and a using method thereof, relates to the technical field of pharmacy, food raw materials, chemical industry and other industries, and aims to solve the problems that the temperature of the MVR evaporator cannot be adjusted according to different mother liquors when the mother liquor is treated, an ideal effect cannot be achieved due to too low evaporation temperature, the higher evaporation temperature is, the higher the internal and external heat energy consumption is, and the pollutant overflow and concentration effect is poor due to too high evaporation temperature. Waste heat recoverer one side is provided with first comdenstion water export and import, the waste heat recoverer opposite side is provided with heat exchanger and comdenstion water and goes out the water pump, heat exchanger one side is provided with the steam separation room, comdenstion water goes out water pump one side and is provided with the comdenstion water pitcher, comdenstion water pitcher one side is provided with frequency conversion vacuum unit, frequency conversion vacuum unit adopts the frequency conversion to adjust, steam separation room below is provided with the circulating pump.
Description
Technical Field
The invention relates to the technical field of pharmacy, food raw materials, chemical industry and other industries, in particular to an MVR evaporator capable of adjusting evaporation temperature according to different mother liquor temperature requirements and a using method thereof.
Background
At present, in the manufacturing process of products in the industries of pharmacy, food raw materials, chemical industry and the like, material concentration, evaporative crystallization and other technological processes are required to extract required raw materials, most of the raw materials are realized by adopting an MVR evaporator, the MVR evaporator is high-efficiency evaporation equipment, and the temperature and the pressure are improved after secondary steam is compressed by a steam engine.
Because the performance advantage that MVR evaporimeter self possessed can make it be suitable for in the mother liquor draws, can be with evaporation concentration crystallization such as high salt and high concentration organic matter, inorganic matter in the mother liquor, but current MVR evaporimeter exists the temperature and can't adjust according to different mother liquors when handling the mother liquor, and low evaporating temperature simultaneously can not reach ideal effect, and evaporating temperature is higher the higher internal and external heat energy resource consumes, and too high evaporating temperature leads to the pollutant to spill over the concentration effect poor.
Disclosure of Invention
The invention aims to provide an MVR evaporator capable of adjusting evaporation temperature according to different mother liquor temperature requirements and a using method thereof, and aims to solve the problems that the temperature of the conventional MVR evaporator cannot be adjusted according to different mother liquors when the mother liquor is treated, an ideal effect cannot be achieved due to too low evaporation temperature, the higher the evaporation temperature is, the higher the internal and external heat energy consumption is, and the lower the evaporation temperature is, the pollutant overflow concentration effect is poor due to too high evaporation temperature.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a can be according to MVR evaporimeter of adjustable evaporating temperature of different mother liquor temperature requirements, includes waste heat recoverer, waste heat recoverer one side is provided with first comdenstion water export and import, the waste heat recoverer opposite side is provided with heat exchanger and comdenstion water outlet pump, heat exchanger one side is provided with the steam separation room, comdenstion water outlet pump one side is provided with the condensate water pitcher, condensate water pitcher one side is provided with frequency conversion vacuum unit, frequency conversion vacuum unit adopts the frequency conversion to adjust, steam separation room below is provided with the circulating pump.
Preferably, the waste heat recoverer is connected with the heat exchanger, the heat exchanger is connected with the steam separation chamber, the upper end of the steam separation chamber is provided with the evaporation separator, the upper end of the evaporation separator is provided with a secondary steam outlet, a compressor is arranged between the secondary steam outlet and the heat exchanger, the compressor is connected with the heat exchanger, and the compressor is connected with the secondary steam outlet.
Preferably, the steam separation chamber is internally provided with mother liquor, the lower end of the steam separation chamber is provided with a finished liquor outlet, one side of the steam separation chamber is provided with a second condensed water outlet, the second condensed water outlet is connected with a circulating pump, and the circulating pump is connected with a waste heat recoverer.
Preferably, the condensed water tank is divided into a water tank upper part and a water tank lower part, a condensed water outlet pump is arranged between the condensed water tank and the waste heat recoverer, the condensed water outlet pump is connected with the water tank lower part, and the water tank upper part is connected with the heat exchanger.
A method for using an MVR evaporator capable of adjusting evaporation temperature according to different mother liquor temperature requirements comprises the following steps:
step 1: firstly, preheating mother liquor through a waste heat recoverer, then feeding the mother liquor into a heat exchanger, feeding the mother liquor which reaches an evaporation temperature required by corresponding raw liquor after heat exchange into an evaporation separator, separating secondary steam, condensed water and finished liquor in the evaporation separator, feeding the secondary steam into a compressor through a secondary steam outlet to continuously improve the heating heat, feeding the heated steam into the heat exchanger again for secondary utilization, condensing latent heat emitted by the secondary steam into condensed water at the moment, and feeding the condensed water into a condensed water tank after the condensed water is collected at the bottom of the heat exchanger;
step 2: when the condensed water enters the circulating pump through the second condensed water outlet for recycling and circularly enters the heat exchanger, the finished liquid is discharged through the finished liquid outlet;
and step 3: finally, the variable-frequency vacuum unit evacuates the gas above the water tank, so that the negative pressure value of the system can be set according to different mother liquids, the evaporation temperature of different mother liquids can reach a required temperature value, the condensed water below the water tank enters the waste heat recoverer through the condensed water outlet pump, and the condensed water after heat exchange is discharged through the first condensed water outlet.
Compared with the prior art, the invention has the beneficial effects that:
1. this can be according to the MVR evaporimeter of the adjustable evaporating temperature of different mother liquor temperature requirements, the evaporating temperature in the evaporimeter is controlled to the pressure that adjusts the evaporimeter through frequency conversion vacuum unit to reach different mother liquors at required best evaporating temperature state, and collect after concentrating the mother liquor.
2. This can be according to the MVR evaporimeter of the adjustable evaporating temperature that different mother liquor temperature required, the negative pressure that makes in the evaporimeter through the suction of frequency conversion vacuum device reduces below the atmospheric pressure, realizes the vaporization evaporation of mother liquor when low temperature, reduces and heats required energy consumption about the stoste 100 degrees, has realized the energy-conservation of MVR evaporimeter from this to the limitation of MVR evaporimeter has been solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic flow chart of the present invention.
In the figure: 1. a heat exchanger; 2. an evaporative separator; 3. a compressor; 4. a variable frequency vacuum unit; 5. a condensate tank; 6. a waste heat recoverer; 7. a vapor separation chamber; 8. mother liquor; 9. a secondary steam outlet; 10. a finishing liquid outlet; 11. above the water tank; 12. below the water tank; 13. a first condensate outlet; 14. an inlet; 15. a circulation pump; 16. the condensed water is discharged out of the water pump; 17. a second condensate outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, an embodiment of the present invention is shown: an MVR evaporator capable of adjusting evaporation temperature according to different mother liquor temperature requirements comprises a waste heat recoverer 6, wherein one side of the waste heat recoverer 6 is provided with a first condensate water outlet 13 and an inlet 14, the other side of the waste heat recoverer 6 is provided with a heat exchanger 1 and a condensate water outlet pump 16, one side of the heat exchanger 1 is provided with a steam separation chamber 7, one side of the condensate water outlet pump 16 is provided with a condensate water tank 5, one side of the condensate water tank 5 is provided with a variable frequency vacuum unit 4, the variable frequency vacuum unit 4 adopts variable frequency adjustment, a circulating pump 15 is arranged below the steam separation chamber 7, the waste heat recoverer 6 is connected with the heat exchanger 1, the heat exchanger 1 is connected with the steam separation chamber 7, the upper end of the steam separation chamber 7 is provided with an evaporation separator 2, the upper end of the evaporation separator 2 is provided with a secondary steam outlet 9, a compressor 3 is arranged between the secondary steam outlet 9 and the heat exchanger 1, and the compressor 3 is connected with the heat exchanger 1, compressor 3 links to each other with secondary vapor outlet 9, and the pressure that makes in the vaporization system reduces to the required set pressure of mother liquor 8 evaporation through the suction of frequency conversion vacuum unit 4, realizes that mother liquor 8 vaporizes the evaporation when required best evaporating temperature, and low temperature evaporation reduces energy consumption, has solved MVR vaporization system's limitation simultaneously.
Further, be equipped with mother liquor 8 in the steam separation chamber 7, completion liquid export 10 has been seted up to steam separation chamber 7 lower extreme, second comdenstion water export 17 has been seted up to steam separation chamber 7 one side, second comdenstion water export 17 links to each other with circulating pump 15, circulating pump 15 links to each other with waste heat recoverer 6, divide into water pitcher top 11 and water pitcher below 12 in the comdenstion water pitcher 5, be provided with comdenstion water outlet pump 16 between comdenstion water pitcher 5 and the waste heat recoverer 6, comdenstion water outlet pump 16 links to each other with water pitcher below 12, water pitcher top 11 links to each other with heat exchanger 1, can circulate the comdenstion water to heat exchanger 1 through circulating pump 15 that sets up, the circulation operation of being convenient for, the evaporation temperature of different mother liquors 8 is controlled to the pressure of adjusting the evaporimeter.
A method for using an MVR evaporator capable of adjusting evaporation temperature according to different mother liquor temperature requirements comprises the following steps:
step 1: firstly, preheating a mother solution 8 through a waste heat recoverer 6, then feeding the mother solution into a heat exchanger 1, feeding the mother solution 8 which reaches an evaporation temperature required by a corresponding raw solution after heat exchange into an evaporation separator 2, separating secondary steam, condensed water and a finished solution from the evaporation separator 2, feeding the secondary steam into a compressor 3 through a secondary steam outlet 9 for continuously improving the heating heat, feeding the heated steam into the heat exchanger 1 again for secondary utilization, condensing latent heat released by the secondary steam into condensed water at the moment, and feeding the condensed water into a condensed water tank 5 after the condensed water is collected at the bottom of the heat exchanger 1;
step 2: when the condensed water enters the circulating pump 15 through the second condensed water outlet 17 for recycling and circularly enters the heat exchanger 1, the finishing liquid is discharged through the finishing liquid outlet 10;
and step 3: finally, the frequency conversion vacuum unit 4 evacuates the gas above the water tank 11, so that the negative pressure value of the system can be set according to different mother liquids 8, the evaporation temperatures of the different mother liquids 8 can reach required temperature values, the condensed water below the water tank 12 enters the waste heat recoverer 6 through the condensed water outlet pump 16, and the condensed water after heat exchange is discharged through the first condensed water outlet 13.
The working principle is as follows: when the device is used, firstly, the mother liquor 8 is preheated by the waste heat recoverer 6 and then enters the heat exchanger 1, the mother liquor 8 reaching the evaporation temperature required by the corresponding raw liquor after heat exchange enters the evaporation separator 2, secondary steam, condensed water and finished liquor are separated in the evaporation separator 2, the secondary steam enters the compressor 3 through the secondary steam outlet 9 to continuously improve the heating heat, the heated steam enters the heat exchanger 1 again for secondary utilization, the pressure of the evaporator is adjusted by the variable frequency vacuum unit 4 to control the evaporation temperature in the evaporation separator 2 so as to reach the state of different mother liquors 8 at the required optimal evaporation temperature, the latent heat emitted by the secondary steam is condensed into condensed water, the condensed water is collected at the bottom of the heat exchanger 1 and then enters the condensed water tank 5, and when the condensed water enters the circulating pump 15 through the second condensed water outlet 17 for circulating use and circularly enters the heat exchanger 1, accomplish liquid and discharge through accomplishing liquid export 10 afterwards, finally, frequency conversion vacuum unit 4 evacuates to find time the gas of water pitcher top 11, ensure that the negative pressure value of system can adjust according to the evaporation temperature that 8 needs of different mother liquors, the suction makes the negative pressure in the evaporimeter reduce below the atmospheric pressure through the frequency conversion vacuum unit 4 that sets up, realize mother liquor 8 vaporization evaporation when low temperature, reduce and heat required energy consumption about 100 degrees to the stoste, the energy-conservation of MVR evaporimeter has been realized, and the limitation of MVR evaporimeter has been solved, the evaporation temperature that realizes different mother liquors 8 all can be satisfied, and the comdenstion water of water pitcher below 12 passes through comdenstion water outlet pump 16 and gets into waste heat recovery 6, the comdenstion water after the heat transfer can through first comdenstion water export 13 discharge.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a can be according to the MVR evaporimeter of the adjustable evaporating temperature of different mother liquor temperature requirements, includes waste heat recoverer (6), its characterized in that: waste heat recoverer (6) one side is provided with first comdenstion water export (13) and import (14), waste heat recoverer (6) opposite side is provided with heat exchanger (1) and comdenstion water outlet pump (16), heat exchanger (1) one side is provided with steam separation room (7), comdenstion water outlet pump (16) one side is provided with condensate water jar (5), condensate water jar (5) one side is provided with frequency conversion vacuum unit (4), frequency conversion vacuum unit (4) adopt the frequency conversion to adjust, steam separation room (7) below is provided with circulating pump (15).
2. The MVR evaporator capable of adjusting the evaporation temperature according to the temperature requirements of different mother liquors as claimed in claim 1, wherein: the waste heat recoverer (6) is connected with the heat exchanger (1), the heat exchanger (1) is connected with the steam separation chamber (7), the evaporation separator (2) is arranged at the upper end of the steam separation chamber (7), a secondary steam outlet (9) is formed in the upper end of the evaporation separator (2), the compressor (3) is arranged between the secondary steam outlet (9) and the heat exchanger (1), the compressor (3) is connected with the heat exchanger (1), and the compressor (3) is connected with the secondary steam outlet (9).
3. The MVR evaporator capable of adjusting the evaporation temperature according to the temperature requirements of different mother liquors as claimed in claim 1, wherein: the waste heat recovery device is characterized in that mother liquor (8) is arranged in the steam separation chamber (7), a finished liquor outlet (10) is formed in the lower end of the steam separation chamber (7), a second condensed water outlet (17) is formed in one side of the steam separation chamber (7), the second condensed water outlet (17) is connected with a circulating pump (15), and the circulating pump (15) is connected with the waste heat recovery device (6).
4. The MVR evaporator capable of adjusting the evaporation temperature according to the temperature requirements of different mother liquors as claimed in claim 1, wherein: the waste heat recovery device is characterized in that the interior of the condensed water tank (5) is divided into a water tank upper part (11) and a water tank lower part (12), a condensed water outlet pump (16) is arranged between the condensed water tank (5) and the waste heat recovery device (6), the condensed water outlet pump (16) is connected with the water tank lower part (12), and the water tank upper part (11) is connected with the heat exchanger (1).
5. The use method of the MVR evaporator capable of adjusting the evaporation temperature according to the temperature requirements of different mother liquors based on any one of claims 1 to 4 is characterized by comprising the following steps:
step 1: firstly, mother liquor (8) is subjected to waste heat through a waste heat recoverer (6) and then enters a heat exchanger (1), the mother liquor (8) which reaches the evaporation temperature required by corresponding raw liquor after heat exchange enters an evaporation separator (2), secondary steam, condensed water and finished liquid are separated in the evaporation separator (2), the secondary steam enters a compressor (3) through a secondary steam outlet (9) to continuously improve the heating heat, the heated steam enters the heat exchanger (1) again for secondary utilization, latent heat discharged by the secondary steam is condensed into condensed water, and the condensed water is collected at the bottom of the heat exchanger (1) and then enters a condensed water tank (5);
step 2: when condensed water enters the circulating pump (15) through the second condensed water outlet (17) for recycling and circularly enters the heat exchanger (1), the finished liquid is discharged through the finished liquid outlet (10);
and step 3: and finally, evacuating the gas above the water tank (11) by the frequency conversion vacuum unit (4), ensuring that the negative pressure value of the system can be set according to different mother liquids (8), so that the evaporation temperatures of the different mother liquids (8) can reach required temperature values, allowing the condensed water below the water tank (12) to enter a waste heat recoverer (6) through a condensed water outlet pump (16), and discharging the condensed water after heat exchange through a first condensed water outlet (13).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110761955.9A CN113457185A (en) | 2021-07-06 | 2021-07-06 | MVR evaporator capable of adjusting evaporation temperature according to different mother liquor temperature requirements and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110761955.9A CN113457185A (en) | 2021-07-06 | 2021-07-06 | MVR evaporator capable of adjusting evaporation temperature according to different mother liquor temperature requirements and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115814442A (en) * | 2022-11-28 | 2023-03-21 | 江苏博隆锦欣环保设备有限公司 | Low-temperature heat pump evaporator and working method thereof |
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