Patent · US Expired

Process for continuous production of methyl mercaptan

US5886230A · kind A · utility

8Cited by

2References

6Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Willi Hofen · Rodenbach, DE
Wolfgang Boeck · Langenselbold, DE
Stephan Rautenberg · Hanau, DE
Joerg Sauer · Rodenbach, DE
Dietrich Arntz · Oberursel, DE
Ralf Goedecke · Rodenbach, DE
Wolfgang Taugner · Schongau, DE
Raymund Sonnenschein · Frankfurt, DE

Key dates

Filing date	Jun 30, 1997
Grant date	Mar 23, 1999
Priority date	—
Expiry date	Jun 30, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C319/08
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for continuous production of methyl mercaptan by catalytic reaction of methanol and hydrogen sulfide. Significant improvements in the pretreatment of the feed gas mixture and in utilization of the heat of reaction and the heat content of the product gas mixture. The energy required to vaporize the methanol is derived partly from utilization of the heat of compression of the hydrogen sulfide gas and from the heat content of the product gas leaving the reactor. The heat of reaction is utilized to heat the feed gas mixture to the reaction temperature, with the help of an external gas heater.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.