Title

Sulfur Recovery From Oil And Gas Refinery Waste Streams Using Semiconductor Particulates

Abstract

A new tail-gas sulfur-recovery system is described in which the H2S, having been absorbed into an alkaline scrubber unit, is decomposed to its constituent elements in a solar photoelectrochemical scheme based on semiconductor particulates. The semiconductor particles would be immobilized in or flowed through a flat-bed photoreactor, along with the alkaline-sulfide stream. The exit stream, containing mostly sulfur as polysulfide anions, would be treated to yield free sulfur and regenerated alkali to be returned to the scrubber. In an evaluation of semiconductor compounds that could possibly bring about H2S decomposition, only CdS showed the ability to decompose H2S. Consequently, the author projects that a photoreactor based on CdS occupying 6.5 acres of land would be required to recover 1.0 ton of sulfur per day.

Publication Date

1-1-1993

Publication Title

Waste Management

Volume

13

Issue

5-7

Number of Pages

527-528

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/0956-053x(93)90114-c

Socpus ID

0027868438 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0027868438

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