CN220669814U - Recovery processing device for volatile gas of methylene dichloride - Google Patents
Recovery processing device for volatile gas of methylene dichloride Download PDFInfo
- Publication number
- CN220669814U CN220669814U CN202321462527.7U CN202321462527U CN220669814U CN 220669814 U CN220669814 U CN 220669814U CN 202321462527 U CN202321462527 U CN 202321462527U CN 220669814 U CN220669814 U CN 220669814U
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- CN
- China
- Prior art keywords
- condenser
- compressor
- precooler
- dichloromethane
- volatile gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 title claims abstract description 142
- 238000011084 recovery Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 238000005057 refrigeration Methods 0.000 abstract description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052801 chlorine Inorganic materials 0.000 abstract description 2
- 239000000460 chlorine Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 10
- 238000007906 compression Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001039 duplex stainless steel Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to a methylene dichloride volatile gas recovery processing device which comprises a methylene dichloride compressor, a drying separator, a water cooler, a precooler, a condenser, a liquid storage tank and a refrigerating system, wherein the inlet end of the methylene dichloride compressor is communicated with a chlorine-containing medium volatile gas source, the outlet end of the methylene dichloride compressor is connected with the inlet end of the drying separator, the outlet end of the drying separator is connected with the inlet end of the water cooler, the outlet end of the water cooler is connected with one inlet end of the precooler, the other inlet end of the precooler is connected with the outlet end of the condenser, one outlet end of the precooler is connected with the condenser, the condenser is connected with the refrigerating system, and the liquid storage tank is connected with the condenser. The utility model not only has considerable economic value for the recovered dichloromethane liquid medium, but also can drive the refrigeration air compressor and also can provide cold for the heat exchanger.
Description
Technical Field
The utility model relates to the technical field of recovery and treatment of waste gas, in particular to a recovery and treatment device for compression, condensation and recovery of volatile gas of a methylene dichloride medium, and specifically relates to a recovery and treatment device for volatile gas of methylene dichloride.
Background
In the production process of lithium battery diaphragms, white oil is mostly adopted as a pore-forming agent, after film formation, the white oil is extracted by methylene dichloride, and the emission of methylene dichloride volatile gas can be generated in the process treatment process, so that the treatment is needed. Therefore, the key to the problem of volatile pollution is to find a technology for effectively treating and recovering volatile pollutants in a medium containing methylene dichloride.
The treatment technology commonly used in China at the present stage mainly comprises an adsorption method, a combustion method, an absorption method and the like. The treatment technology has high public engineering consumption, complex process and unsatisfactory recovery effect.
Disclosure of Invention
The utility model aims to design a compression condensation recovery treatment device for volatile gas of a methylene chloride-containing medium, which not only meets the relevant emission standard, but also reduces the public engineering consumption of equipment, aiming at the problems of high public engineering consumption, complex process and unsatisfactory recovery effect of the existing methylene chloride-containing medium treatment method.
The utility model is realized by the following technical scheme:
the utility model provides a dichloromethane volatile gas recovery processing device, includes dichloromethane compressor, dry separator, water-cooler, precooler, condenser, liquid storage pot and refrigerating system, dichloromethane compressor's entry end is linked together with dichloromethane volatile gas air supply, dichloromethane compressor's exit end links to each other with dry separator's entry end, dry separator's exit end links to each other with the entry end of water-cooler, water-cooler's exit end links to each other with one entry end of precooler, another entry end of precooler links to each other with the exit end of condenser, one exit end of precooler links to each other with the condenser, the condenser links to each other with refrigerating system, provide the cold source by refrigerating system and cool down to dichloromethane gas, the liquid storage pot links to each other with the condenser, the dichloromethane liquid of cooling condensation gets into in the liquid storage pot and retrieves.
In order to avoid the environment pollution of the gas and recover a certain amount of cold energy, the gas is discharged after the other outlet end of the precooler is treated by the expander.
Preferably, the dichloromethane compressor is a single-screw liquid spraying compressor, and the outlet pressure of the compressor is more than or equal to 0.8MPaG; the pre-water cooler, the precooler and the condenser are shell-and-tube heat exchangers;
wherein the water cooler is provided with a chilled water inlet and a chilled water outlet.
The beneficial effects of the utility model are as follows:
1. the refrigeration process with the temperature of more than 0 ℃ is adopted, and compared with the deep refrigeration process, the energy consumption required by refrigeration is reduced;
2. because the molecular boiling point of the dichloromethane medium is low and volatile, the dichloromethane compressor adopts a corrosion-resistant spray screw compressor, the isothermal compression is approximate, and the secondary volatilization of the dichloromethane medium in the compression process is avoided;
3. the other outlet end of the precooler is treated by the expander to be discharged after reaching the standard, and the expander can be used for generating electricity, can drive a refrigeration air compressor and can also provide cold energy for the heat exchanger.
Drawings
FIG. 1 is a schematic system diagram of a methylene chloride volatile gas recovery processing device of the utility model.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
The utility model provides a methylene dichloride volatile gas recovery processing device as shown in figure 1, including methylene dichloride compressor 1, dry separator 2, water-cooler 3, precooler 4, condenser 5, liquid storage tank 6, refrigerating system 7, the entry end of methylene dichloride compressor 1 is linked together with chlorine-containing medium volatile gas (methylene dichloride volatile gas) air supply, the exit end of methylene dichloride compressor 1 links to each other with the entry end of dry separator 2, the exit end of dry separator 2 links to each other with the entry end of water-cooler 3, the exit end of water-cooler 3 links to each other with one of the entry ends of precooler 4, water-cooler 3 is equipped with chilled water import and chilled water export, another entry end of precooler 4 links to each other with the exit end of condenser 5, another exit end of precooler 4 is through the gaseous emission up to standard of expander 8 after handling, condenser 5 provides the cold source by refrigerating system 7 and cools down the methylene dichloride gas, the methylene dichloride liquid of cooling condensation is got into liquid storage tank 6 and is retrieved.
In specific implementation, the dichloromethane compressor 1 is preferably a single-screw compressor, the internal impeller is made of 316L or duplex stainless steel, circulating liquid and volatile gas of dichloromethane medium are compressed simultaneously in the pressurizing process of the dichloromethane compressor 1, the temperature rise of the outlet of the dichloromethane compressor 1 is less than 15 ℃, and the outlet pressure of the dichloromethane compressor 1 is more than or equal to 0.8MPaG; the pre-water cooler 3, the pre-cooler 4 and the condenser 5 are preferably shell-and-tube heat exchangers, and are made of stainless steel 316L, so that the pre-water cooler is corrosion-resistant, high in adaptability and high in treatment capacity; the refrigeration system 7 generally includes: the refrigerating compressor, the evaporator, the water-cooled condenser, the electromagnetic valve and the like indirectly provide cold energy through the refrigerant in the refrigerating water tank, and the refrigerant is conveyed to the condenser by the water pump.
The working principle of the utility model is as follows:
the volatile gas of the methylene dichloride medium enters a methylene dichloride compressor 1, the methylene dichloride compressor 1 automatically operates and self-adapts to the working frequency to be balanced with the air intake, the volatile gas is pressurized to be more than or equal to 0.8MPaG through the compressor, the volatile gas enters a water cooler 3 to a precooler 4 after being separated by a drying separator 2, the non-condensable gas discharged by a condenser 5 in the precooler 4 is precooled and discharged, the cold energy of the condenser 5 is provided by a refrigerating system 7, a large amount of methylene dichloride medium can be condensed in a condensing unit and discharged to a liquid storage tank 6, in the condenser 5, the condenser temperature is 0-5 ℃, the partial pressure of the steam of water and the methylene dichloride medium is greatly higher than the corresponding saturated partial pressure of the steam to be liquefied, most of the volatile gas condensate is recovered, and the non-condensable gas in the condenser 5 is heated as a cold source to be discharged after entering the precooler 4 for a certain temperature rise.
Finally, it should be noted that: the above examples are only specific embodiments of the present utility model for illustrating the technical solution of the present utility model, but not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the foregoing examples, it will be understood by those skilled in the art that the present utility model is not limited thereto: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a dichloromethane volatile gas recovery processing device which characterized in that: the device comprises a dichloromethane compressor, a drying separator, a water cooler, a precooler, a condenser, a liquid storage tank and a refrigerating system, wherein the inlet end of the dichloromethane compressor is communicated with a dichloromethane volatile gas source, the outlet end of the dichloromethane compressor is connected with the inlet end of the drying separator, the outlet end of the drying separator is connected with the inlet end of the water cooler, the outlet end of the water cooler is connected with one inlet end of the precooler, the other inlet end of the precooler is connected with the outlet end of the condenser, one outlet end of the precooler is connected with the condenser, the condenser is connected with the refrigerating system, the refrigerating system provides a cold source for cooling dichloromethane gas, the liquid storage tank is connected with the condenser, and cooled and condensed dichloromethane liquid enters the liquid storage tank for recovery.
2. The methylene chloride volatile gas recovery processing device according to claim 1, wherein: and the other outlet end of the precooler is treated by an expander and then the gas is discharged after reaching the standard.
3. The methylene chloride volatile gas recovery processing device according to claim 2, wherein: the dichloromethane compressor is a single-screw liquid spraying compressor, and the outlet pressure of the compressor is more than or equal to 0.8MPaG.
4. The methylene chloride volatile gas recovery processing device according to claim 2, wherein: the water cooler, the precooler and the condenser are shell-and-tube heat exchangers.
5. The methylene chloride volatile gas recovery processing device according to claim 2, wherein: the water cooler is provided with a chilled water inlet and a chilled water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321462527.7U CN220669814U (en) | 2023-06-09 | 2023-06-09 | Recovery processing device for volatile gas of methylene dichloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321462527.7U CN220669814U (en) | 2023-06-09 | 2023-06-09 | Recovery processing device for volatile gas of methylene dichloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220669814U true CN220669814U (en) | 2024-03-26 |
Family
ID=90344799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321462527.7U Active CN220669814U (en) | 2023-06-09 | 2023-06-09 | Recovery processing device for volatile gas of methylene dichloride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220669814U (en) |
-
2023
- 2023-06-09 CN CN202321462527.7U patent/CN220669814U/en active Active
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