The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 1988
Filed:
Jul. 27, 1987
Kurt Schuchardt, Bruhl, DE;
Harald Scholz, Erftstadt, DE;
Erich Niehus, Bornheim, DE;
Harald Adam, Erftstadt, DE;
Hoechst Aktiengesellschaft, , DE;
Abstract
1,2-dichloroethane is continuously and completely removed and recovered from the off-gas obtained during the production of 1,2-dichloroethane by subjecting ethylene to an oxychlorination reaction with hydrogen chloride and oxygen. The off-gas is initially contacted with active carbon, then incinerated at temperatures higher than 900.degree. C. and ultimately freed from hydrogen chloride and chlorine, and the active carbon is freed from 1,2-dichloroethane and regenerated by treating it with hot steam. More particularly, the off-gas loaded with the 1,2-dichloroethane and having a temperature of 1.degree. C. to 10.degree. C. is heated to a temperature at least 20.degree. C. higher than the respective dew point of water and contacted with the active carbon.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile