Union Carbide Corporation

Praxair Technology, Inc.

Kazuo Kiyonaga

Thomas John Bergman, Jr

Lawrence M Litz

Matthew Lincoln Wagner

Donald Walter Kirkwood

Donald Walter Welsh Kirkwood

This invention is directed towards an improved process for the selective gas phase oxidation of a organic reactant using a metal oxide redox catalyst, wherein the organic reactant and air feeds are at a substantially continuous level, the improvement comprising adding a fluctuating flow of oxygen at alternating relatively high and relatively low levels. The invention also teaches means by which a gas may be provided to a reaction process on a fluctuating basis.

Oxygen enrichment process for air based gas phase oxidations which use metal oxide redox catalysts

Oxygen enrichment process for air based gas phase oxidations which use

In systems in which air is introduced into a liquid as a source of oxygen, additional oxygen added independent of the feed air enhances the oxygen content of the liquid source significantly than if the same amount of additional oxygen were combined with the feed air.

Oxygen enrichment method and system

Gas dispersion in a liquid is enhanced by combining the gas and liquid in close proximity to a venturi or other flow constriction means used to create supersonic flow velocities and subsequent deacceleration to sub-sonic velocity. When a venturi is employed, the gas-liquid mixing occurs in the converging portion of the venturi or upstream but in close proximity to said venturi. Turbulent flow conditions upstream of the venturi or other flow constriction means adequate to disperse the gas uniformly in the liquid are not required and, surprisingly, the gas and liquid need not be uniformly dispersed prior to acceleration to supersonic velocity.

Gas dispersion process and system

In a process for hardening oxidizable green iron ore pellets in a vertical shaft furnace, said process comprising passing the pellets through the furnace wherein said pellets are heated by contact with hot combustion gases and air, the furnace having a zone which is downstream of the introduction of the combustion gases, said zone having an average temperature in the range of about 1100.degree. F. to about 2200.degree. F.,

Process for upgrading iron ore pellets

In a process for producing molten glass in a generally cylindrical continuously rotating chamber comprising the following steps:

Process for producing glass in a rotary furnace

A continuous process for melting inorganic raw materials to produce molten glass in a generally cylindrical continuously rotating chamber comprising the following steps:

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Honolulu, HI, United States of America

Kazuo Kiyonaga