Process of producing carbon monoxide from light hydrocarbons

US3988425A · kind A · utility

Assignee

• Metallgesellschaft AG · DE

Inventors

• Heinz Jockel
• Friedrich-Wilhelm Moller
• Hans G. Mortel
• Heiner Tanz · Dreieich, DE

Key dates

• Filing date: Jul 30, 1974
• Grant date: Oct 26, 1976
• Expiry date: Jul 30, 1994

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P30/40
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Carbon monoxide is produced from light hydrocarbons having an average C number not greater than 15 by catalytic cracking with water vapor in two cracking stages followed by separation of the carbon monoxide from the product gas employing the following steps: PA1 I. mixing the hydrocarbon feedstock with 0.02-0.1 standard cubic meter hydrogen per kilogram; PA1 Ii. subjecting this mixture to hot desulfurization; PA1 Iii. mixing the desulfurized mixture with superheated process steam in a ratio of 1.1-1.7 moles per mole of carbon in the feedstock; PA1 Iv. converting the resulting mixture in contact with nickel catalysts in a first cracking stage at temperatures of 300.degree.-500.degree. C. and thereafter, after a partial pressure relief, in a second stage at temperatures above 825.degree. C.; and PA1 V. cooling the product gas which is rich in carbon monoxide and hydrogen, removing carbon dioxide and water vapor from the cooled product gas, and then decomposing said product gas at low temperatures recovering carbon monoxide and hydrogen.