The United States of America as Represented by the United States

The Standard Oil Company

The University of Chicago

John B Harkness

Edward J Daniels

Anthony J Gorski

James P Nelson

James O Knobloch

Richard D Doctor

Ronald J Wingender

A process for generating hydrogen and elemental sulfur from hydrogen sulfide waste in which the hydrogen sulfide is associated under plasma conditions and a portion of the hydrogen output is used in a catalytic reduction unit to convert sulfur-containing impurities to hydrogen sulfide for recycle, the process also including the addition of an ionizing gas such as argon to initiate the plasma reaction at lower energy, a preheater for the input to the reactor and an internal adjustable choke in the reactor for enhanced coupling with the microwave energy input.

Hydrogen and sulfur recovery from hydrogen sulfide wastes

A method of simultaneously removing SO.sub.2 and NO from oxygen-containing flue gases resulting from the combustion of carbonaceous material by contacting the flue gas with an aqueous scrubber solution containing an aqueous sulfur dioxide sorbent and an active metal chelating agent which promotes a reaction between dissolved SO.sub.2 and dissolved NO to form hydroxylamine N-sulfonates. The hydroxylamine sulfonates are then separated from the scrubber solution which is recycled.

Flue gas desulfurization/denitrification using metal-chelate additives

Isolation of polyhalobenzenepolycarboxylic acids from a sulfuric acid medium by diluting said sulfuric acid medium with liquid sulfur dioxide and partitioning said polyhalobenzenepolycarboxylic acids from said sulfuric acid medium.

Polyhalobenzenepolycarboxylic acid processes

Growing community of inventors

Naperville, IL, United States of America

John B Harkness