The M.w. Kellogg Company

Texaco Chemical Company

John R Cassata

Christiaan P Van Dijk

Bernard G Mandelik

Philip J Shires

Rei-Yu J Hwan

Stuart J Parker

Catherine J Conkwright

An impure methyl tertiary butyl ether product contaminated with isobutylene, methanol and water is purified by continuous counter-current contact with water and isobutylene in a counter-current contact extraction tower to provide an overhead extract comprising isobutylene, methyl tertiary butyl ether and water and a raffinate comprising methanol, water and a minor amount of methyl tertiary butyl ether, the overhead raffinate being separated in a methyl tertiary butyl ether purification distillation zone into a lighter distillation fraction comprising isobutylene and water and a heavier distillation fraction consisting essentially of methyl tertiary butyl ether, the lighter distillation fraction being decanted to remove water and to provide a distillate isobutylene fraction that is charged to a surge drum from which isobutylene is returned to the contact tower.

Continuous isobutylene-assisted aqueous extraction of methanol from

A process for production of ammonia wherein stoichiometrically hydrogen-lean synthesis gas is reacted over a highly active synthesis catalyst.

Ammonia synthesis

Ammonia synthesis gas having excess nitrogen is produced in a reactor-exchanger primary reformer followed by an autothermal secondary reformer wherein process air for the latter is preheated by heat exchange with gas turbine exhaust and the primary reformer is heated by synthesis gas from the secondary reformer.

Preparation of ammonia synthesis gas

Growing community of inventors

Houston, TX, United States of America

John R Cassata