Patent · US Expired

Method for removal of acid gases from a gas flow

US7004997B2 · kind B2 · utility

12Cited by

9References

11Claims

0Family size

Assignee

BASF SE

Inventors

Norbert Asprion · Ludwigshafen, DE
Christoph Grossmann · Hamburg, DE

Key dates

Filing date	Jul 19, 2002
Grant date	Feb 28, 2006
Priority date	—
Expiry date	Jul 21, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D53/1456
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process is described for removing acid gases from a gas stream in which an acid-gas-containing gas stream in which the sum of the partial pressures of the acid gases does not exceed 1,500 mbar is brought into contact with an aqueous absorbent in an absorption step and an absorbent is used which contains methyldiethanolamine and piperazine at a concentration of at least 8% by weight of the absorbent, an acid-gas-depleted gas stream and an acid-gas-loaded absorbent being obtained.

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