Abstract: A process is described for producing sulphuric acid from sulphur dioxide (SO.sub.2) wherein two fluid streams, in the form of a gaseous SO.sub.2 gas and oxygen (air), and a liquid, primary sulphuric acid and water, are contacted with each other and a catalyst assembly at a temperature in the range 150.degree. to 280.degree. C.
Abstract: A catalytic cartridge internally heated is utilized as a SO.sub.3 decomposer for thermochemical hydrogen production. The cartridge has two embodiments, a cross-flow cartridge and an axial flow cartridge. In the cross-flow cartridge, SO.sub.3 gas is flowed through a chamber and incident normally to a catalyst coated tube extending through the chamber, the catalyst coated tube being internally heated. In the axial-flow cartridge, SO.sub.3 gas is flowed through the annular space between concentric inner and outer cylindrical walls, the inner cylindrical wall being coated by a catalyst and being internally heated. The modular cartridge decomposer provides high thermal efficiency, high conversion efficiency, and increased safety.
Type:
Grant
Filed:
May 22, 1981
Date of Patent:
September 28, 1982
Assignee:
The United States of America as represented by the United States Department of Energy
Abstract: A catalytic cartridge surrounding a heat pipe driven by a heat source is utilized as a SO.sub.3 decomposer for thermochemical hydrogen production. The cartridge has two embodiments, a cross-flow cartridge and an axial flow cartridge. In the cross-flow cartridge, SO.sub.3 gas is flowed through a chamber and incident normally to a catalyst coated tube extending through the chamber, the catalyst coated tube surrounding the heat pipe. In the axial-flow cartridge, SO.sub.3 gas is flowed through the annular space between concentric inner and outer cylindrical walls, the inner cylindrical wall being coated by a catalyst and surrounding the heat pipe. The modular cartridge decomposer provides high thermal efficiency, high conversion efficiency, and increased safety.
Type:
Grant
Filed:
November 18, 1980
Date of Patent:
May 25, 1982
Assignee:
The United States of America as represented by the United States Department of Energy