CN204778994U - Sodium methyl mercaptide waste liquid by -product sodium sulfhydrate device - Google Patents
Sodium methyl mercaptide waste liquid by -product sodium sulfhydrate device Download PDFInfo
- Publication number
- CN204778994U CN204778994U CN201520500484.6U CN201520500484U CN204778994U CN 204778994 U CN204778994 U CN 204778994U CN 201520500484 U CN201520500484 U CN 201520500484U CN 204778994 U CN204778994 U CN 204778994U
- Authority
- CN
- China
- Prior art keywords
- methyl mercaptide
- sodium
- sodium methyl
- scrubber
- washer
- 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.)
- Expired - Fee Related
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- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model relates to a sodium methyl mercaptide waste liquid by -product sodium sulfhydrate device, including sulphuric acid pans, pickling ware, a plurality of scrubber, alkali lye pans and vacuum absorbing mechanism, the sulphuric acid pans link to each other with the top feed port of pickling ware, and the sodium methyl mercaptide process wastewater pipe links to each other with the pickling ware, and the pickling ware links to each other with the scrubber, a plurality of scrubber series connections, and the scrubber links to each other with the alkali lye pans, and the top gas outlet of every scrubber links to each other with vacuum absorbing mechanism's vacuum pump, vacuum pump and buffer tank intercommunication. The utility model discloses a with the sodium methyl mercaptide process wastewater acidizing to turn into gas -liquid two -phase with the waste liquid, the liquid phase is sodium sulphate solution, through washing with alkaline in succession the gaseous phase, thereby obtains the sodium sulfhydrate solution of high -purity, can regard as the quality raw materials of sodium methyl mercaptide production, not only reaches sodium methyl mercaptide production deodorization, disinfection, improves the purpose of environment, helps improving sodium methyl mercaptide product quality moreover, greatly reduced sodium methyl mercaptide manufacturing cost, have the lower characteristics of working costs.
Description
Technical field
The utility model relates to sodium methyl mercaptide environmental protection treatment technical field, is specifically related to a kind of sodium methyl mercaptide waste liquid by-product Sodium sulfhydrate device.
Background technology
Sodium methyl mercaptide is a kind of important organic intermediate compound, can be used for production Multiple Pesticides as products such as methomyl, aldicarb etc. and fodder additives methionine(Met).Its production technique many employings Sodium sulfhydrate and methyl-sulfate (or methyl chloride) reaction, generate methyl mercaptan gas, then become 20% sodium methyl mercaptide solution with absorbing by liquid caustic soda, can produce the poisonous waste liquid containing Sodium sulfhydrate of stench in process of production.In recent years, domestic many sodium methyl mercaptide manufacturing enterprises, owing to not noting the improvement of above pollutent or can not find suitable processing scheme, result in and finally stop production to the pollution of surrounding environment or change the line of production, have impact on the market supply of this product to a certain extent.The pollution problem of therefore administering in sodium methyl mercaptide production ensures that can this product normally be produced, the key of meeting the need of market.
Utility model content
The utility model provides a kind of sodium methyl mercaptide waste liquid by-product Sodium sulfhydrate device, and the sodium methyl mercaptide existed to solve prior art is produced the waste liquid produced and not easily processed the problem causing environmental pollution.
The utility model solves the technical scheme that its technical problem adopts:
A kind of sodium methyl mercaptide waste liquid by-product Sodium sulfhydrate device, comprise sulfuric acid tundish, acid cleaning device, some washers, alkali lye tundish and vacuum absorption mechanism, sulfuric acid tundish are connected with its top feed mouth of acid cleaning device, sodium methyl mercaptide process waste liquor pipe is connected with acid cleaning device, the top gas outlet of acid cleaning device is connected with washer, some washers are connected in series, the overhead-liquid import of washer is connected with alkali lye tundish respectively, the top gas outlet of each washer is connected with the vacuum pump of vacuum absorption mechanism, and vacuum pump is communicated with surge tank.
The principle of work of the utility model device is: in sodium methyl mercaptide factory effluent, add sulfuric acid, reacts as follows: Na
2s+H
2sO
4=Na
2sO
4+ H
2s; 2NaHS+H
2sO
4=Na
2sO
4+ 2H
2s.There is gas and generate Sodium sulfhydrate through three grades of alkali liquor absorptions successively in reaction, reacts as follows: 2NaOH+H
2s=Na
2s+2H
2o; Na
2s+H
2s=2NaHS.The sodium hydroxide solution meeting technique concentration requirement is added by 3# washer, and product Sodium sulfhydrate is discharged by 1# washer.Because reaction is thermopositive reaction above, when 1# washer temperature rises to certain temperature not when raising and have downtrending, Sodium sulfhydrate is produced and is reacted completely, and generating mass concentration is the sodium hydrosulfide of about 32%, can discharge Collection utilization; 2# washings falls liquid to 1# washer; 3# washings falls liquid to 2# washer; 3# washer adds fresh alkali lye to be continued to produce, and simultaneously the gas of washer to be delivered in burner through surge tank by vacuum pump and burned.
The utility model passes through the acidifying of sodium methyl mercaptide process waste liquor, thus just waste liquid is converted into gas-liquid two-phase, liquid phase is metabisulfite solution, by carrying out continuous alkali cleaning to gas phase, thus obtaining highly purified sodium hydrosulfide, can be used as the high quality raw material that sodium methyl mercaptide is produced, the object of sodium methyl mercaptide production deodorizing, sterilization, environmental protect can not only be reached, and contribute to improving sodium methyl mercaptide quality product, greatly reduce sodium methyl mercaptide production cost, have the advantages that working cost is lower.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the process flow diagram of the utility model device.
1 sulfuric acid tundish, 2 acid cleaning devices, 3 washers, 4 washers, 5 washers, 6 alkali lye tundish, 7 vacuum pumps, 8 surge tanks in figure.
Embodiment
As shown in the figure, a kind of sodium methyl mercaptide waste liquid by-product Sodium sulfhydrate device, comprise sulfuric acid tundish 1, acid cleaning device 2, washer 3, washer 4, washer 5, alkali lye tundish 6 and vacuum absorption mechanism, sulfuric acid tundish 1 are connected with its top feed mouth of acid cleaning device 2, sodium methyl mercaptide process waste liquor pipe is connected with acid cleaning device 2, the top gas outlet of acid cleaning device 2 is connected with washer, washer 3, washer 4 and washer 5 are connected in series, washer 3, washer 4 is connected with alkali lye tundish 6 respectively with the overhead-liquid import of washer 5, the top gas outlet of each washer is connected with the vacuum pump 7 of vacuum absorption mechanism, vacuum pump 7 is communicated with surge tank 8.
The principle of work of the utility model device is: in sodium methyl mercaptide factory effluent, add sulfuric acid, reacts as follows: Na
2s+H
2sO
4=Na
2sO4+H
2s; 2NaHS+H
2sO
4=Na
2sO
4+ 2H
2s.There is gas and generate Sodium sulfhydrate through three grades of alkali liquor absorptions successively in reaction, reacts as follows: 2NaOH+H
2s=Na
2s+2H
2o; Na
2s+H
2s=2NaHS.The sodium hydroxide solution meeting technique concentration requirement is added by 3# washer, and product Sodium sulfhydrate is discharged by 1# washer.Because reaction is thermopositive reaction above, when 1# washer temperature rises to certain temperature not when raising and have downtrending, Sodium sulfhydrate is produced and is reacted completely, and generating mass concentration is the sodium hydrosulfide of about 32%, can discharge Collection utilization; 2# washings falls liquid to 1# washer; 3# washings falls liquid to 2# washer; 3# washer adds fresh alkali lye to be continued to produce, and simultaneously the gas of washer to be delivered in burner through surge tank by vacuum pump and burned.
Claims (1)
1. a sodium methyl mercaptide waste liquid by-product Sodium sulfhydrate device, it is characterized in that comprising sulfuric acid tundish, acid cleaning device, some washers, alkali lye tundish and vacuum absorption mechanism, sulfuric acid tundish are connected with its top feed mouth of acid cleaning device, sodium methyl mercaptide process waste liquor pipe is connected with acid cleaning device, the top gas outlet of acid cleaning device is connected with washer, some washers are connected in series, the overhead-liquid import of washer is connected with alkali lye tundish respectively, the top gas outlet of each washer is connected with the vacuum pump of vacuum absorption mechanism, and vacuum pump is communicated with surge tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520500484.6U CN204778994U (en) | 2015-07-13 | 2015-07-13 | Sodium methyl mercaptide waste liquid by -product sodium sulfhydrate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520500484.6U CN204778994U (en) | 2015-07-13 | 2015-07-13 | Sodium methyl mercaptide waste liquid by -product sodium sulfhydrate device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204778994U true CN204778994U (en) | 2015-11-18 |
Family
ID=54519086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520500484.6U Expired - Fee Related CN204778994U (en) | 2015-07-13 | 2015-07-13 | Sodium methyl mercaptide waste liquid by -product sodium sulfhydrate device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204778994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141948A (en) * | 2019-06-27 | 2019-08-20 | 山东清沂山石化科技有限公司 | A kind of amic H of sulfur-bearing2S tail gas three-level absorbs processing method |
-
2015
- 2015-07-13 CN CN201520500484.6U patent/CN204778994U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141948A (en) * | 2019-06-27 | 2019-08-20 | 山东清沂山石化科技有限公司 | A kind of amic H of sulfur-bearing2S tail gas three-level absorbs processing method |
| CN110141948B (en) * | 2019-06-27 | 2021-11-12 | 山东清沂山石化科技有限公司 | H containing sulfur amide2S tail gas three-stage absorption treatment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20210713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |