FIELD: chemistry.
SUBSTANCE: invention relates to a method of continuous catalytic production of methylmercaptan by reacting and hydrogen sulphide in gaseous phase at temperature ranging from 200 to 600°C and pressure ranging from 1.5 to 40 bars, involving a) distribution of the whole amount of catalyst on at least two separate zones, b) feeding a gaseous mixture containing methanol and hydrogen sulphide into the first zone, b) feeding methanol in liquid and/or gaseous state between the first, second and the next zones if they are present and c) separation of the formed methylmercaptan, wherein overall molar ratio of the used amount of hydrogen sulphide to methanol ranges from 1:1 to 10:1, and preferably from 1:1 to 5:1. Methymercaptan is an industrially important intermediate product, used in synthesis of methionine, as well as in production of dimethyl sufoxide and dimethyl sulfone.
EFFECT: production of methylmercaptan using a cost-effective method.
19 cl
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2485099C2 |
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| METHOD OF SEPARATING MIXTURE OF GASEOUS PRODUCTS FORMED IN PROCESS OF CATALYTIC SYNTHESIS OF METHYL MERCAPTAN | 1997 |
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| METHOD OF EXTRACTING METHYLMERCAPTAN FROM REACTION GAS MIXTURES | 2004 |
|
RU2361859C2 |
| CATALYST FOR METHYLMERCAPTANE PREPARATION FROM METHANOL AND HYDROGEN SULFIDE | 2004 |
|
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| METHYLMERCAPTAN PRODUCTION PROCESS, METHOD OF PREPARING CATALYST FOR PRODUCTION OF METHYLMERCAPTAN, AND METHOD OF PRODUCING HYDROGEN SULFIDE FOR METHYLMERCAPTAN PRODUCTION | 1999 |
|
RU2157366C1 |
| CATALYST FOR SYNTHESIS OF METHYLMERCAPTAN AND METHOD OF ITS PRODUCTION | 1997 |
|
RU2190467C2 |
