CN213286235U - Membrane separation device for recovering methyl chloride from glyphosate tail gas - Google Patents
Membrane separation device for recovering methyl chloride from glyphosate tail gas Download PDFInfo
- Publication number
- CN213286235U CN213286235U CN202021526913.4U CN202021526913U CN213286235U CN 213286235 U CN213286235 U CN 213286235U CN 202021526913 U CN202021526913 U CN 202021526913U CN 213286235 U CN213286235 U CN 213286235U
- Authority
- CN
- China
- Prior art keywords
- gas
- methyl chloride
- liquid separator
- tail gas
- membrane
- 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.)
- Active
Links
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a membrane separation device for recovering methyl chloride from glyphosate tail gas, which comprises a first gas-liquid separator, wherein the first gas-liquid separator is connected with hydrolysis tail gas inlet pipe, the first gas-liquid separator is sequentially connected with a gas holder, a second gas-liquid separator, a condenser, a drying component, a compressor, a deep cooling kettle and a membrane separator, the structure is simple and clear, the coming tail gas enters the gas holder through a buffer tank to separate water, methyl chloride in the gas holder enters the condenser through the second gas-liquid separator to condense and separate water in the gas, the methyl chloride gas coming out of the condenser is dried through the gas drying component, the dried methyl chloride is compressed through the compressor and then is deep cooled through the kettle to obtain finished methyl chloride, the membrane separation and recovery are finally carried out through the membrane separator, the principle is simple, the recovery efficiency is high, and the method is worth popularizing.
Description
Technical Field
The utility model relates to a glyphosate production facility technical field specifically is a membrane separation device of methyl chloride is retrieved to glyphosate tail gas.
Background
At present, the total yield of the glyphosate and the phosphorous acid dimethyl vinegar in China can reach more than 60 million tons, and the byproduct methyl chloride tail gas is more than 40 million tons every year, but the technology level is limited, and the byproduct methyl chloride cannot be effectively recycled by most glyphosate bony and phosphorous acid dimethyl vinegar production enterprises in China at present. Methyl chloride is a colorless and odorous gas and is toxic to human bodies. The tail gas is not treated and discharged, so that the economic income is reduced for enterprises, and more importantly, the environmental air is seriously influenced, so that a membrane separation device for recovering methyl chloride from glyphosate tail gas is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a membrane separation device of methyl chloride is retrieved to glyphosate tail gas to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a membrane separation device of methyl chloride is retrieved to glyphosate tail gas, includes first vapour and liquid separator, first vapour and liquid separator is connected with the tail gas of hydrolysising and advances the pipe, first vapour and liquid separator has connected gradually gas holder, second vapour and liquid separator, condenser, dry subassembly, compressor, cryrogenic cauldron and membrane separator outward, first vapour and liquid separator, gas holder, second vapour and liquid separator, condenser, dry subassembly, compressor, cryrogenic cauldron and membrane separator interconnect.
Preferably, the drying assembly comprises a water washing tower, a caustic washing tower and a concentrated sulfuric acid drying tower.
Preferably, the membrane separator comprises a separation frame, the separation frame is filled with an organic vapor membrane, and the left end and the right end of the separation frame are respectively connected with an air inlet pipe and an air outlet pipe.
Preferably, the right side of the bottom end surface of the separation frame is connected with the input end of the compressor through a return pipe.
Preferably, the condenser condensation temperature is-20 ℃.
Preferably, the cryogenic temperature of the cryogenic kettle is-40 ℃.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses simple structure, the structure is clear and understandable, tail gas in the production technology that comes from grass gan bony gets into the gas holder after buffer tank gets into first vapour and liquid separator separation moisture content, methyl chloride in the gas holder gets into the condenser through second vapour and liquid separator again, make the moisture content condensation separation in the gas, the methyl chloride gas that comes out from the condenser carries out drying process through gaseous experience drying assembly, dry methyl chloride is compressed through the compressor, carry out cryrogenic cauldron through the cryrogenic cauldron again, obtain the finished product methyl chloride, carry out membrane separation through the membrane separator at last and retrieve, the partial methyl chloride gas that can't absorb through freezing method after organic vapor membrane filters is sent the compressor again and is compressed, the gaseous high altitude that contains chlorine methane after the filtration is very thin discharges, the recovery efficiency is high, and easy operation, and is worth promoting.
Drawings
FIG. 1 is a schematic view of a recovery unit of a membrane separation device for recovering methyl chloride from glyphosate tail gas;
FIG. 2 is a schematic diagram of a membrane separator of a membrane separation device for recovering methyl chloride from glyphosate tail gas.
In the figure: 1-a first gas-liquid separator, 2-a gas holder, 3-a second gas-liquid separator, 4-a condenser, 5-a water washing tower, 6-an alkaline washing tower, 7-a concentrated sulfuric acid drying tower, 8-a drying component, 9-a compressor, 10-a deep cooling kettle, 11-a membrane separator, 12-an exhaust pipe, 13-an organic vapor membrane, 14-an air inlet pipe, 15-a return pipe and 16-a separation frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a membrane separation device of methyl chloride is retrieved to glyphosate tail gas, includes first vapour and liquid separator 1, first vapour and liquid separator 1 is connected with the tail gas of hydrolysising and advances the pipe, first vapour and liquid separator 1 has connected gradually gas holder 2, second vapour and liquid separator 3, condenser 4, drying component 8, compressor 9, cryrogenic cauldron 10 and membrane separator 11 outward, first vapour and liquid separator 1, gas holder 2, second vapour and liquid separator 3, condenser 4, drying component 8, compressor 9, cryrogenic cauldron 10 and 11 interconnect of membrane separator.
Tail gas from the production process of glyphosate bony enters a first gas-liquid separator 1 through a buffer tank to separate water and then enters a gas holder 2, methyl chloride in the gas holder 2 enters a condenser 4 through a second gas-liquid separator 3 to condense and separate the water in the gas, the methyl chloride gas discharged from the condenser 4 is dried through a gas drying component 8, the dried methyl chloride is compressed through a compressor 9 and is subjected to deep cooling through a deep cooling kettle 10 to obtain a finished product methyl chloride, and finally the finished product methyl chloride is subjected to membrane separation and recovery through a membrane separator 11.
The drying component 8 comprises a water washing tower 5, an alkaline washing tower 6 and a concentrated sulfuric acid drying tower 7, methanol components in the methyl chloride gas are removed through water washing, acid components in the methyl chloride gas are removed through alkaline washing, and water in the methyl chloride gas is removed through concentrated acid drying.
The membrane separator 11 comprises a separation frame 16, an organic vapor membrane 13 is filled in the separation frame 16, the left end and the right end of the separation frame 16 are respectively connected with an air inlet pipe 14 and an air outlet pipe 12, and the right side of the bottom end face of the separation frame 16 is connected with an input end of a compressor 9 through a return pipe 15.
Part of the non-condensable gas which cannot be absorbed by the freezing method is filtered by the organic vapor film 13, the methyl chloride gas is sent into the compressor 9 again for compression, and the gas containing the very thin methyl chloride is discharged at high altitude after being filtered.
The condensing temperature of the condenser 4 is-20 ℃, so that the moisture in the gas is condensed and separated.
The deep cooling temperature of the deep cooling kettle 10 is-40 ℃, and the finished product chloromethane is obtained through deep cooling.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. 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.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a membrane separation device of methyl chloride is retrieved to glyphosate tail gas, includes first vapour and liquid separator (1), its characterized in that: first vapour and liquid separator (1) is connected with the tail gas of hydrolysising and advances the pipe, first vapour and liquid separator (1) has connected gradually gas holder (2), second vapour and liquid separator (3), condenser (4), drying assembly (8), compressor (9), cryrogenic cauldron (10) and membrane separator (11) outward, first vapour and liquid separator (1), gas holder (2), second vapour and liquid separator (3), condenser (4), drying assembly (8), compressor (9), cryrogenic cauldron (10) and membrane separator (11) interconnect.
2. The membrane separation device for recovering methyl chloride from glyphosate tail gas as claimed in claim 1, which is characterized in that: the drying component (8) comprises a water washing tower (5), an alkaline washing tower (6) and a concentrated sulfuric acid drying tower (7).
3. The membrane separation device for recovering methyl chloride from glyphosate tail gas as claimed in claim 2, which is characterized in that: the membrane separator (11) comprises a separation frame (16), an organic vapor membrane (13) is filled in the separation frame (16), and the left end and the right end of the separation frame (16) are respectively connected with an air inlet pipe (14) and an air outlet pipe (12).
4. The membrane separation device for recovering methyl chloride from glyphosate tail gas as claimed in claim 3, which is characterized in that: the right side of the bottom end surface of the separation frame (16) is connected with the input end of the compressor (9) through a return pipe (15).
5. The membrane separation device for recovering methyl chloride from glyphosate tail gas as claimed in claim 4, which is characterized in that: the condensing temperature of the condenser (4) is-20 ℃.
6. The membrane separation device for recovering methyl chloride from glyphosate tail gas as claimed in claim 5, which is characterized in that: the deep cooling temperature of the deep cooling kettle (10) is-40 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021526913.4U CN213286235U (en) | 2020-07-28 | 2020-07-28 | Membrane separation device for recovering methyl chloride from glyphosate tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021526913.4U CN213286235U (en) | 2020-07-28 | 2020-07-28 | Membrane separation device for recovering methyl chloride from glyphosate tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213286235U true CN213286235U (en) | 2021-05-28 |
Family
ID=76022076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021526913.4U Active CN213286235U (en) | 2020-07-28 | 2020-07-28 | Membrane separation device for recovering methyl chloride from glyphosate tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213286235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532020A (en) * | 2021-07-28 | 2021-10-22 | 重庆天原化工有限公司 | Chloromethane compression system |
-
2020
- 2020-07-28 CN CN202021526913.4U patent/CN213286235U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532020A (en) * | 2021-07-28 | 2021-10-22 | 重庆天原化工有限公司 | Chloromethane compression system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101407444B (en) | Method for recovering methyl chloride in discharged tail gas of glyphosate / dimethyl phosphate production | |
| CN110041164B (en) | Method for recovering methyl chloride | |
| CN107297124B (en) | A kind of coproduction CO2Rectisol system and using its recycle CO2Method | |
| CN110698320B (en) | Continuous recovery device and continuous recovery process for glyphosate hydrolyzed gas phase | |
| CN213286235U (en) | Membrane separation device for recovering methyl chloride from glyphosate tail gas | |
| CN101875596B (en) | Process for reclaiming chloromethane | |
| CN105502294A (en) | Electronic-grade high-purity hydrogen chloride high-pressure preparation method | |
| CN108380029A (en) | A kind of alkyl esterification method glyphosate solvent recovering system and technique | |
| CN211782272U (en) | Carbon dioxide rectification separation waste liquid treatment device | |
| CN111744328A (en) | Low-energy-consumption carbon dioxide capturing method and system for low-concentration carbon dioxide-containing tail gas | |
| CN205109056U (en) | Sour vapor removal recovery unit of red fuming nitric acid (RFNA) production | |
| CN110776395A (en) | Method for recovering byproduct methyl chloride of glyphosate/dimethyl phosphite | |
| CN111393257A (en) | Method for recovering chloroethane from chloroethane-containing waste gas in production of ethyl maltol and homologues thereof | |
| CN211813429U (en) | Device for preparing hydrogen chloride by using sulfur-based compound fertilizer waste acid | |
| CN101254906B (en) | Method and device for vacuum nitric acid gas recovering during preparation of nitric acid | |
| CN214780781U (en) | System for utilize alcohol tail gas to retrieve alcohol and high-purity carbon dioxide as raw materials | |
| CN215822767U (en) | System for preventing vinyl chloride monomer from self-polymerization | |
| CN106744720B (en) | The circulation recycling system and its operation process of trichloroacetaldehyde by-product dilute sulfuric acid | |
| CN201302354Y (en) | Equipment system of coolant lyophilization technique | |
| CN207831794U (en) | A kind of adipic acid tail gas purifies the device of liquid laughing gas processed | |
| CN105622332A (en) | Recovery method for chloroethane tail gas in fosetyl-aluminum production | |
| CN103318843B (en) | Hydrogen bromide gas drying method | |
| CN106565538B (en) | A kind of purification process of acrylonitrile reactor gas | |
| CN213286326U (en) | Retrieve membrane separation device of methyl chloride | |
| CN111256432A (en) | Device and method for treating carbon dioxide rectification separation waste liquid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |