Patent · US Expired

Process for separating hydrogen halides from gases containing sulphur dioxide

US5888465A · kind A · utility

1Cited by

8References

2Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Ulrich Rappold · Roßdorf, DE
Wolfgang Schick · Mannheim, DE
Jorg Schmid · Hürth, DE
Joachim Semel · Eppstein, DE
Heinrich Merten · Bad Soden, DE
Matthias Schubert · Rendsburg, DE
Gerhard Luft · Mühltal, DE

Key dates

Filing date	Feb 25, 1997
Grant date	Mar 30, 1999
Priority date	—
Expiry date	Feb 25, 2017

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2257/206
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Disclosed and claimed is a process for selectively separating hydrogen halides from sulfur-dioxide-containing gases by using an adsorbent made from a porous ceramic support material which is impregnated with an alkaline earth metal salt solution and, after evaporation of the solvent, the alkaline earth metal salt is pyrolysed at 200.degree. to 800.degree. C. to give alkaline earth metal oxide .Xh.sub.2 O, where x is a number from 0 to 1.

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