Process for the filtration of suspensions containing sulfur
First Claim
1. A process for separating dispersed sulfur contained in a sulfur containing alkaline suspension formed by the oxidative washing of a hydrogen sulfide containing gas comprising the steps of heating the suspension to increase its temperature to at least 45°
- C. but no more than about 70°
C. thereby causing coagulated sulfur solid particles to form and then filtering the suspension to form from such particles a non-thixotropic sulfur-containing filter cake.
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Accused Products
Abstract
To improve the separation of dispersedly precipitated sulfur from a washing solution used in the oxidative washing of hydrogen sulfide containing waste gases, the suspension is heated before filtration to about 45° C. to 70° C. Such heating causes the sulfur contained in the solution to coagulate into large flocks and form a mass of high purity sulfur which is largely non-thixotropic. This mass, often called a filter cake, can be washed and utilized in a large number of ways as a source of sulfur.
9 Citations
6 Claims
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1. A process for separating dispersed sulfur contained in a sulfur containing alkaline suspension formed by the oxidative washing of a hydrogen sulfide containing gas comprising the steps of heating the suspension to increase its temperature to at least 45°
- C. but no more than about 70°
C. thereby causing coagulated sulfur solid particles to form and then filtering the suspension to form from such particles a non-thixotropic sulfur-containing filter cake. - View Dependent Claims (2, 3, 4, 5, 6)
- C. but no more than about 70°
Specification