CN220485377U - Chloromethane waste water recovery device - Google Patents
Chloromethane waste water recovery device Download PDFInfo
- Publication number
- CN220485377U CN220485377U CN202320695888.XU CN202320695888U CN220485377U CN 220485377 U CN220485377 U CN 220485377U CN 202320695888 U CN202320695888 U CN 202320695888U CN 220485377 U CN220485377 U CN 220485377U
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- China
- Prior art keywords
- chloromethane
- tank
- flash
- wastewater recovery
- condenser
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- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 title claims abstract description 288
- 239000002351 wastewater Substances 0.000 title claims abstract description 65
- 238000011084 recovery Methods 0.000 title claims abstract description 41
- 229940050176 methyl chloride Drugs 0.000 claims abstract description 47
- 239000010865 sewage Substances 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000001704 evaporation Methods 0.000 claims abstract description 10
- 230000008020 evaporation Effects 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 229920005549 butyl rubber Polymers 0.000 claims description 17
- 239000007791 liquid phase Substances 0.000 claims description 11
- 239000012071 phase Substances 0.000 claims description 11
- 238000006116 polymerization reaction Methods 0.000 claims description 10
- 239000012808 vapor phase Substances 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 16
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 4
- 230000014509 gene expression Effects 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- NEHMKBQYUWJMIP-OUBTZVSYSA-N chloromethane Chemical group Cl[13CH3] NEHMKBQYUWJMIP-OUBTZVSYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000010092 rubber production Methods 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
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- Physical Water Treatments (AREA)
Abstract
The utility model provides a chloromethane wastewater recovery device, which comprises a chloromethane vapor flash tank; a condenser connected to the methyl chloride vapor flash tank; a liquid separation tank connected with the condenser; a flash stripping tank connected to the knock-out tank; and the sewage treatment device is connected with the flash evaporation stripping tank. The chloromethane process device system provided by the utility model improves the utilization rate of chloromethane, greatly reduces the unit consumption of chloromethane, and reduces the influence of chloromethane on the process environment and the pressure of subsequent sewage treatment.
Description
Technical Field
The utility model belongs to the technical field of chloromethane wastewater recovery devices, and particularly relates to a chloromethane wastewater recovery device.
Background
In butyl rubber devices, methyl chloride is used as a carrier and does not participate in the reaction, so that the methyl chloride needs to be recycled, and the lower the consumption, the higher the profit. The existing butyl rubber production process can directly discharge the chloromethane wastewater to a sewage tank, so that the chloromethane is extremely wasted, hydrochloric acid and DME (dimethyl ether) are easy to generate due to the fact that high-temperature chloromethane is easy to hydrolyze, neutralization solution is not adjusted in time, pH is too low, corrosion equipment is easy to erode, and meanwhile, larger pressure is caused for process environment and subsequent sewage treatment.
Therefore, how to find a more suitable treatment device and solve the recovery treatment of chloromethane wastewater in the existing butyl rubber device has become one of the problems to be solved by a plurality of first-line researchers in the industry.
Disclosure of Invention
In view of the above, the technical problem to be solved by the utility model is to provide a chloromethane wastewater recovery device, which improves the utilization rate of chloromethane, greatly reduces the unit consumption of chloromethane, and reduces the influence of chloromethane on the process environment and the pressure of subsequent sewage treatment by a specific chloromethane process device system.
The utility model provides a chloromethane wastewater recovery device, which comprises:
a methyl chloride vapor flash tank;
a condenser connected to the methyl chloride vapor flash tank;
a liquid separation tank connected with the condenser;
a flash stripping tank connected to the knock-out tank;
and the sewage treatment device is connected with the flash evaporation stripping tank.
Preferably, the methyl chloride vapor flash tank comprises one or more methyl chloride vapor flash tanks;
the number of the plurality of the components is 2-5.
Preferably, the chloromethane wastewater recovery device is a chloromethane wastewater recovery device for a butyl rubber polymerization unit;
the methyl chloride is a carrier solvent for butyl rubber.
Preferably, the methyl chloride inlet of the methyl chloride vapor flash tank is connected with the outlet end of the methyl chloride pipeline of the butyl rubber polymerization unit;
the condenser comprises two condensers which are arranged in parallel.
Preferably, the chloromethane wastewater recovery device further comprises a chloromethane compressor;
and a gas phase outlet of the liquid separating tank is connected with an inlet of the chloromethane compressor.
Preferably, the methyl chloride compressor comprises a three-stage compressor;
and a chloromethane recovery unit is further arranged between the two sections of the three-section compressor.
Preferably, the gas phase outlet of the condenser is connected with the chloromethane pipeline;
and the outlet of the three-stage compressor is connected with the inlet end of a chloromethane pipeline of the butyl rubber polymerization unit.
Preferably, the gas phase inlet of the condenser is connected with the methyl chloride vapor flash tank;
the vapor phase outlet of the flash stripping tank is connected with the vapor phase inlet of the condenser.
Preferably, the liquid phase outlet of the condenser is connected with the liquid separating tank;
and a liquid phase outlet of the liquid separating tank is connected with the flash evaporation stripping tank.
Preferably, a heat exchanger is further arranged between the liquid phase outlet of the flash evaporation stripping tank and the sewage treatment device;
the sewage treatment device comprises a sewage tank.
The utility model provides a chloromethane wastewater recovery device, which comprises a chloromethane vapor flash tank; a condenser connected to the methyl chloride vapor flash tank; a liquid separation tank connected with the condenser; a flash stripping tank connected to the knock-out tank; and the sewage treatment device is connected with the flash evaporation stripping tank. Compared with the prior art, the chloromethane process device system provided by the utility model has the advantages that the utilization rate of chloromethane is improved, the unit consumption of chloromethane is greatly reduced, and the influence of chloromethane on the process environment and the pressure of subsequent sewage treatment are reduced.
The utility model is aimed at recycling methyl chloride solvent used in butyl rubber device, methyl chloride is stripped and recovered by steam, power circulation is carried out by a methyl chloride compressor, and methyl chloride wastewater can be generated by condensing a liquid separating tank at an inlet of the compressor by a heat exchanger. According to the utility model, the methyl chloride stripping device is improved and arranged on the process device, and steam stripping is adopted to recycle the methyl chloride wastewater, so that the utilization rate of methyl chloride is improved, and the unit consumption of the methyl chloride is greatly reduced.
The utility model makes the chloromethane waste water directly contact with the water vapor, and makes the chloromethane in the waste water diffuse into the gas phase according to a certain proportion, thereby achieving the purpose of separating from the waste water. According to the utility model, the waste water stripping device is used for further stripping and recycling the chloromethane, so that the direct discharge of the waste water containing the high-concentration chloromethane is avoided, the chloromethane loss caused by the discharge of the waste water is reduced, and the utilization rate of the chloromethane is improved.
Drawings
FIG. 1 is a schematic and schematic process flow diagram of a chloromethane wastewater recovery device provided by the utility model;
fig. 2 is a comparison of the contents of chloromethane in the chloromethane wastewater before and after the chloromethane wastewater recovery device provided by the utility model is adopted.
Detailed Description
For a further understanding of the present utility model, preferred embodiments of the utility model are described below in conjunction with the examples, but it should be understood that these descriptions are merely intended to illustrate further the features and advantages of the utility model and are not limiting of the patent claims of the utility model.
All noun expressions and abbreviations of the utility model belong to the conventional noun expressions and abbreviations in the field of the art, and each noun expression and abbreviation is clear and definite in the relevant application field, and the person skilled in the art can understand clearly, accurately and uniquely according to the noun expressions and abbreviations.
The utility model provides a chloromethane wastewater recovery device, which comprises:
a methyl chloride vapor flash tank;
a condenser connected to the methyl chloride vapor flash tank;
a liquid separation tank connected with the condenser;
a flash stripping tank connected to the knock-out tank;
and the sewage treatment device is connected with the flash evaporation stripping tank.
In the present utility model, the methyl chloride vapor flash tank preferably comprises one or more methyl chloride vapor flash tanks.
In the present utility model, the number of the plurality is preferably 2 to 5, more preferably 3 to 4.
In the present utility model, the chloromethane wastewater recovery device is preferably a chloromethane wastewater recovery device for a butyl rubber polymerization unit.
In the present utility model, the methyl chloride is preferably a carrier solvent for butyl rubber.
In the present utility model, the methyl chloride inlet of the methyl chloride vapor flash tank is preferably connected to the outlet end of the methyl chloride line of the butyl rubber polymerization unit.
In the present utility model, the condenser preferably includes two condensers disposed in parallel.
In the present utility model, the chloromethane wastewater recovery apparatus preferably further comprises a chloromethane compressor.
In the present utility model, the gas phase outlet of the knock out pot is preferably connected to the inlet of the methyl chloride compressor.
In the present utility model, the methyl chloride compressor preferably comprises a three-stage compressor.
In the present utility model, a methyl chloride recovery unit is preferably further included between the two stages of the three-stage compressor.
In the present utility model, the gas phase outlet of the condenser is preferably connected to the chloromethane line.
In the present utility model, the vapor phase outlet of the flash stripping tank is preferably connected to the vapor phase outlet of the condenser.
In the present utility model, the outlet of the three-stage compressor is preferably connected to the inlet end of the chloromethane line of the butyl rubber polymerization unit.
In the present utility model, the gas phase inlet of the condenser is preferably connected to the methyl chloride vapor flash tank.
In the present utility model, the vapor phase outlet of the flash stripping tank is connected to the vapor phase inlet of the condenser.
In the present utility model, the liquid phase outlet of the condenser is preferably connected to the liquid separation tank.
In the present utility model, the liquid phase outlet of the knock-out tank is preferably connected to the flash stripping tank.
In the present utility model, a heat exchanger is preferably further provided between the liquid phase outlet of the flash stripping tank and the sewage treatment apparatus.
In the present utility model, the liquid phase outlet of the flash stripping tank is preferably connected to the sewage treatment apparatus by a pump. Specifically, the pump body is arranged between the liquid phase outlet of the flash stripping tank and the heat exchanger.
In the present utility model, the sewage treatment apparatus preferably includes a sewage tank.
The utility model provides a chloromethane wastewater recovery device, which improves the utilization rate of chloromethane, greatly reduces the unit consumption of chloromethane, and reduces the influence of chloromethane on the process environment and the pressure of subsequent sewage treatment.
The utility model is aimed at recycling methyl chloride solvent used in butyl rubber device, methyl chloride is stripped and recovered by steam, power circulation is carried out by a methyl chloride compressor, and methyl chloride wastewater can be generated by condensing a liquid separating tank at an inlet of the compressor by a heat exchanger. According to the utility model, the methyl chloride stripping device is improved and arranged on the process device, and steam stripping is adopted to recycle the methyl chloride wastewater, so that the utilization rate of methyl chloride is improved, and the unit consumption of the methyl chloride is greatly reduced.
The utility model makes the chloromethane waste water directly contact with the water vapor, and makes the chloromethane in the waste water diffuse into the gas phase according to a certain proportion, thereby achieving the purpose of separating from the waste water. According to the utility model, the waste water stripping device is used for further stripping and recycling the chloromethane, so that the direct discharge of the waste water containing the high-concentration chloromethane is avoided, the chloromethane loss caused by the discharge of the waste water is reduced, and the utilization rate of the chloromethane is improved.
For further explanation of the present utility model, a chloromethane wastewater recovery apparatus provided by the present utility model will be described in detail with reference to examples, but it should be understood that these examples are implemented on the premise of the technical solution of the present utility model, and detailed implementation and specific operation procedures are given only for further explanation of the features and advantages of the present utility model, and not limitation of the claims of the present utility model, and the scope of protection of the present utility model is not limited to the examples described below.
Example 1
Referring to fig. 1, fig. 1 is a schematic and simplified process flow diagram of a chloromethane wastewater recovery device provided by the utility model. Wherein, 1 is methyl chloride steam flash tank, 2 is condenser, 3 is liquid separating tank, 4 is flash steam stripping tank, 5 is heat exchanger, 6 is sewage treatment device, 7 is compressor, 8 is recovery unit, 9 is polymerization unit.
Methyl chloride is subjected to flash evaporation and stripping recovery in a flash tank through steam, and most of water vapor is condensed by an E200 cooler to form wastewater, and the wastewater is discharged into a sewage tank. Further flash stripping is carried out by increasing V201, so that the chloromethane in the wastewater is reduced, the chloromethane unit consumption is reduced, and the sewage cost is reduced.
The flash evaporation stripping tank is arranged between the liquid separation tank and the sewage discharge system, and the waste water is heated by 0.35MPA steam so as to achieve the effect of separating part of chloromethane from the waste water, and then the waste water is pumped into a sewage tank by a pump P201.
Referring to fig. 2, fig. 2 is a graph showing the comparison of the content of chloromethane in chloromethane wastewater before and after the chloromethane wastewater recovery device provided by the utility model is adopted. Wherein, the corresponding 10 months in fig. 2 adopts the content data before and after, and the unit is ppm.
As can be seen from FIG. 2, after the chloromethane wastewater recovery device provided by the utility model is adopted, the chloromethane content in the wastewater is greatly reduced.
According to the actual operation data, the temperature of the wastewater stripping device is controlled to be 90-95 ℃ and the chloromethane content of the wastewater is reduced from 2500ppm to 500ppm by the optimal design of the process device. Greatly reduces the content of chloromethane in the wastewater, reduces the loss of materials and reduces the cost.
While the utility model has been described in detail with respect to a chloromethane wastewater recovery apparatus provided herein, specific examples are presented herein to illustrate the principles and embodiments of the utility model and to assist in understanding the manner in which the utility model is practiced and its core concepts, including the best mode, and to also enable any person skilled in the art to practice the utility model, including making and using any devices or systems and performing any incorporated methods. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims. The scope of the patent protection is defined by the claims and may include other embodiments that occur to those skilled in the art. Such other embodiments are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims.
Claims (10)
1. A chloromethane wastewater recovery device, comprising:
a methyl chloride vapor flash tank;
a condenser connected to the methyl chloride vapor flash tank;
a liquid separation tank connected with the condenser;
a flash stripping tank connected to the knock-out tank;
and the sewage treatment device is connected with the flash evaporation stripping tank.
2. The chloromethane wastewater recovery apparatus of claim 1, wherein the chloromethane vapor flash tank comprises one or more chloromethane vapor flash tanks;
the number of the plurality of the components is 2-5.
3. The chloromethane wastewater recovery device according to claim 1, wherein the chloromethane wastewater recovery device is a chloromethane wastewater recovery device for a butyl rubber polymerization unit;
the methyl chloride is a carrier solvent for butyl rubber.
4. A chloromethane wastewater recovery apparatus according to claim 3, wherein a chloromethane inlet of the chloromethane vapor flash tank is connected to an outlet end of a chloromethane line of the butyl rubber polymerization unit;
the condenser comprises two condensers which are arranged in parallel.
5. The chloromethane wastewater recovery apparatus of claim 4, further comprising a chloromethane compressor;
and a gas phase outlet of the liquid separating tank is connected with an inlet of the chloromethane compressor.
6. The chloromethane wastewater recovery apparatus of claim 5, wherein the chloromethane compressor comprises a three-stage compressor;
and a chloromethane recovery unit is further arranged between the two sections of the three-section compressor.
7. The chloromethane wastewater recovery apparatus of claim 6, wherein a gas phase outlet of the condenser is connected to the chloromethane line;
and the outlet of the three-stage compressor is connected with the inlet end of a chloromethane pipeline of the butyl rubber polymerization unit.
8. The chloromethane wastewater recovery apparatus of claim 1, wherein a gas phase inlet of the condenser is connected to the chloromethane vapor flash tank;
the vapor phase outlet of the flash stripping tank is connected with the vapor phase inlet of the condenser.
9. The chloromethane wastewater recovery device according to claim 1, wherein a liquid phase outlet of the condenser is connected with the liquid separation tank;
and a liquid phase outlet of the liquid separating tank is connected with the flash evaporation stripping tank.
10. The chloromethane wastewater recovery device according to claim 1, wherein a heat exchanger is further arranged between the liquid phase outlet of the flash stripping tank and the sewage treatment device;
the sewage treatment device comprises a sewage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320695888.XU CN220485377U (en) | 2023-03-29 | 2023-03-29 | Chloromethane waste water recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320695888.XU CN220485377U (en) | 2023-03-29 | 2023-03-29 | Chloromethane waste water recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220485377U true CN220485377U (en) | 2024-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320695888.XU Active CN220485377U (en) | 2023-03-29 | 2023-03-29 | Chloromethane waste water recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220485377U (en) |
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2023
- 2023-03-29 CN CN202320695888.XU patent/CN220485377U/en active Active
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