Patent · US Active

Removal of aromatic hydrocarbons from coke-oven gas by absorption

US8241429B2 · kind B2 · utility

0Cited by

2References

6Claims

0Family size

Assignee

UHDE GMBH · DE

Inventors

Diethmar Richter · Berlin, DE
Holger Thielert · Dortmund, DE
Guenter Wozny · Hohen Neuendorf, DE

Key dates

Filing date	Jun 27, 2008
Grant date	Aug 14, 2012
Priority date	—
Expiry date	Jun 27, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2257/7027
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a method of removing aromatic hydrocarbons from coke-oven gas. The coke-oven gas is contacted with a wash liquid in a gas scrubber, and aromatic hydrocarbons are separated by absorption from the coke-oven gas. Subsequently the wash liquid enriched with aromatic hydrocarbons is heated, and the aromatic hydrocarbons are stripped from the wash liquid using water vapor. After cooling the wash liquid is finally returned to the gas scrubber. According to the invention biodiesel is used as the wash liquid.

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