Patent · US Expired

Process for the disposal of the residue of the exhaust gas washers of furnaces in particular bituminous coal power stations

US4136998A · kind A · utility

14Cited by

5References

6Claims

0Family size

Assignees

Ruhrkohle AG
STEAG GmbH · DE

Inventors

Friedrich Bassier · Duisburg, DE
Klaus Goldschmidt · Essen, DE

Key dates

Filing date	Jan 27, 1977
Grant date	Jan 30, 1979
Priority date	—
Expiry date	Jan 27, 1997

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB03B9/04
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for disposing of the residue of exhaust gas washers by utilizing them as a structural material in mines. The sulfur in the exhaust gases is reacted with calcium compounds to form CaSO.sub.4.2H.sub.2 O. The CaSO.sub.4.2H.sub.2 O is recrystallized to alpha-CaSO.sub.4.1/2H.sub.2 O, conveyed underground, mixed with water, implaced and allowed to harden to form barricades or other structures in the mine.

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