Demonstration of So2 Scrubbing of Flue and Stack Gases by Citrate Absorption.
Pres At Am Min Cong Min Conv Los Angeles California Sept 23-26 1979 :14 pages
The Bureau of Mines citrate process for scrubbing so2 from industrial waste gases comprises absorption of so2 from cooled and cleaned gases in a solution of sodium citrate, citric acid, and sodium thiosulfate, followed by reacting the absorbed so2 with h2s to precipitate elemental sulfur and regenerate the citrate solution for recycle. Laboratory investigations established process parameters; then pilot plant testing at a copper smelter and a lead smelter confirmed process, operational, and performance parameters and established the design basis of commercial demonstration of the citrate process. The demonstration plant represents a joint government-industry effort to apply the citrate process to an existing 60-mw coal-fired, electricity generating powerplant. Construction of the demonstration plant was scheduled to be completed in August 1979, and acceptance testing was to start immediately afterwards. Following the plant acceptance test, plans call for the test and evaluation of the plant operation for 1 year.
Pres. At Am. Min. Cong. Min. Conv., Los Angeles, California, Sept 23-26, 1979, 14 PP.