초록 ▼

A process for producing and cleaning a synthesis gas which contains ammonia and hydrogen cyanide catalytically converts most of the cyanide to ammonia which, along with some of the cyanide, is removed from the gas with water to form aqueous solutions of ammonia and cyanide. The hydrocarbon gas feed

A process for producing and cleaning a synthesis gas which contains ammonia and hydrogen cyanide catalytically converts most of the cyanide to ammonia which, along with some of the cyanide, is removed from the gas with water to form aqueous solutions of ammonia and cyanide. The hydrocarbon gas feed to the synthesis gas generator is used to strip ammonia and cyanide out of one or more of the aqueous solutions of these two species formed during the process and pass them into the generator in which they are consumed to form clean water. A portion of the resulting clean water is recycled back into the process where it used to scrub the synthesis gas, with the remainder used for other purposes or sent to disposal.

대표청구항 ▼

[ What is claimed is:] [1.] A synthesis gas production and clean-up process which comprises producing a synthesis gas comprising H.sub.2, CO, ammonia and hydrogen cyanide in a synthesis gas generator from a feed comprising a hydrocarbon gas, followed by removing said ammonia and hydrogen cyanide fro

[ What is claimed is:] [1.] A synthesis gas production and clean-up process which comprises producing a synthesis gas comprising H.sub.2, CO, ammonia and hydrogen cyanide in a synthesis gas generator from a feed comprising a hydrocarbon gas, followed by removing said ammonia and hydrogen cyanide from said gas to form a clean synthesis gas by catalytically converting most of said hydrogen cyanide in said synthesis gas to ammonia, removing said ammonia and a portion of said hydrogen cyanide remaining in said synthesis gas after said conversion by cooling said gas to form a condensate comprising a first aqueous solution of said ammonia and hydrogen cyanide and an ammonia reduced synthesis gas, followed by scrubbing said cool gas with clean water to remove additional ammonia and hydrogen cyanide to form both a clean synthesis gas and a second aqueous solution of said ammonia and hydrogen cyanide, combining at least a portion of said aqueous solutions and stripping said ammonia and hydrogen cyanide out of said combined solutions and into said generator with said hydrocarbon feed gas to produce clean water, wherein said stripped ammonia and hydrogen cyanide are consumed in said generator and wherein at least a portion of said clean water is used to scrub said cool gas.