2166. MAY, W. G., AND SWEETSER, S. B. (Standard Oil Development Co.). Hydrocarbon Synthesis With Two-Stage Coke Gasification. United States Patent 2,620,348, Dec. 2, 1952. Chem. Abs., vol. 47, 1953, p. 2462.

PATENTS

2166. MAY, W. G., AND SWEETSER, S. B. (Standard Oil Development Co.). Hydrocarbon Synthesis With Two-Stage Coke Gasification. United States Patent 2,620,348, Dec. 2, 1952. Chem. Abs., vol. 47, 1953, p. 2462.

To eliminate recycling, a 2-stage synthesis unit is operated in conjunction with a 2-stage coke-gasification unit. In the 1^st gasification unit, steam and O₂ are used to produce a product gas with H₂:CO ratio of 1.0-1.5. This gas is fed to the 1^st synthesis unit, where liquid hydrocarbons and a tail gas of high H₂:CO ratio are produced with the aid of an Fe catalyst. Coke from the 1^st gasification stage passes to a 2d stage, where it is gasified with CO₂, O₂, and steam to produce a gas with a H₂:CO ratio of 0.5-0.8. This gas is mixed with the tail gas from the 2d stage to give a gas with a H₂:CO ratio of 0.8-1.2, which is utilized in a 2d synthesis stage.