Coking and gasification process
AssigneeExxon Research & Engineering Co.
InventorsRustom M. Billimoria, Frank F. Tao
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Abstract
An improved coking process for normally solid carbonaceous materials wherein the yield of liquid product from the coker is increased by adding ammonia or an ammonia precursor to the coker. The invention is particularly useful in a process wherein coal liquefaction bottoms are coked to produce both a liquid and a gaseous product. Broadly, ammonia or an ammonia precursor is added to the coker ranging from about 1 to about 60 weight percent based on normally solid carbonaceous material and is preferably added in an amount from about 2 to about 15 weight percent.
Claims8
In a coking process wherein a normally solid carbonaceous material is coked at a temperature within the range from about 850.degree. to about 1400.degree. F. and at a pressure within the range from about 5 to about 150 psig and the coke fluidized during the coking operation, the improvement wherein gaseous ammonia or a gaseous ammonia precursor is added to the coker in an amount sufficient to provide from about 1 to about 60 wt % gaseous ammonia in the coker based on the weight of carbon in said solid carbonaceous material.
In an integrated coking and gasification process wherein a normally solid carbonaceous material is coked at a temperature within the range from about 850.degree. to about 1400.degree. F. and at a pressure within the range from about 5 to about 150 psig and at least a portion of the coke gasified in a gasifier and wherein the coking is accomplished is a fluid bed, the improvement wherein gaseous ammonia or a gaseous ammonia precursor is added to the coker in an amount sufficient to provide from about 1 to about 60 wt % gaseous ammonia in the coker based on the weight of carbon in said solid carbonaceous material.
Dependencies are inferred from the claim text.