US 5,028,409 AGranted

Method and apparatus for recovering sulfur from gases containing hydrogen sulfide

AssigneeAmerican Combustion, Inc.

InventorGregory M. Gitman

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Abstract

A method of recovering sulfur from gaseous materials containing hydrogen sulfide is provided having the steps of reacting a first gaseous material with first oxidizing gas in a first reaction step to form first products of incomplete combustion including primary gaseous sulfur, sulfur dioxide and uncombusted hydrogen sulfide; cooling said first products of incomplete combustion in first cooling means; directing a first fraction of the cooled first products of incomplete combustion to first condensing means; condensing the first reaction of the cooled first products of incomplete combustion in the first condensing means to form collectable sulfur and gaseous product; reacting the gaseous products leaving the first condensing means and the remaining fraction of the cooled first products of incomplete combustion with second oxidizing gas in a second reaction step to form second products of incomplete combustion including gaseous sulfur; cooling the second products of incomplete combustion in second cooling means; and condensing the second gaseous sulfur from the cooled second products of incomplete combustion in second condensing means to form collectable sulfur.

Claims1

Dependent claims

A method of recovering sulfur from gaseous materials containing hydrogen sulfide, comprising the steps of:

(a) reacting a first gaseous material with first oxidizing gas in a first reaction step to form first products of incomplete combustion including primary gaseous sulfur, sulfur dioxide and uncombusted hydrogen sulfide;
(b) first cooling said first products of incomplete combustion in first cooling means;
(c) directing a first fraction of said cooled first products of incomplete combustion to first condensing means;
(d) first condensing said first fraction of said cooled first products of incomplete combustion in a first condensing means to form collectable sulfur and gaseous product;
(e) reacting said gaseous products leaving said first condensing means and the remaining fraction of said cooled first products of incomplete combustion with second oxidizing gas in a second reaction step to form second products of incomplete combustion including gaseous sulfur;
(f) second cooling said second products of incomplete combustion in second cooling means;
(g) second codensing said cooled second products of incomplete combustion in second condensing means to form collectable sulfur;
and
(h) mixing a fraction of said first products of incomplete combustion leaving said first condensing step with said second products of incomplete combustion leaving said second condensing step, said first products of incomplete combustion bypassing said second reaction step and said second cooling step.

6 more elements

Dependencies are inferred from the claim text.