Air Products and Chemicals, Inc.

Pradip Rao

Dennis M Brown

Donald C Erickson

Michael S Chen

Thomas Hsiao-Ling Hsiung

John F Kirner

Robert F Weimer

George W Roberts

Bharat Lajjaram Bhatt

John J Lewnard

Anthony A Cassano

Brian R Dunbobbin

William A Schwartz

James C Bronfenbrenner

William R Brown

M Moniz

Dennis Mackenzie Brown

Robert Fredrick Weimer

John Joseph Lewnard

An apparatus and process are described for the cooling and condensing of sulfur and water vapors from a Claus gas below the sulfur freezing point (248.degree. F.) at low pressure (&lt;30 psia), so that solid sulfur and condensed water are simultaneously removed from the Claus gas without solid sulfur plugging of the separation equipment and with efficient separation of the sulfur from water.

Water condenser/separator systems for Claus processes

The present invention relates to a process for improving reactor volumetric productivity in the production of methanol wherein a synthesis feed gas stream containing hydrogen and carbon oxides is contacted with a catalyst slurry containing greater than about 25 wt % of a powdered copper-containing catalyst having a porosity of from about 30% to 70%. Volumetric productivity is maximized in the process by controlling a single parameter, gas holdup, wherein holdup is maintained within the range of about 14% to 26%.

High volumetric production of methanol in a liquid phase reactor

The present invention relates to a method of activation of a CuO/ZnO/Al.sub.2 O.sub.3 catalyst slurried in a chemically inert liquid. Successful activation of the catalyst requires the use of a process in which the temperature of the system at any time is not allowed to exceed a certain critical value, which is a function of the specific hydrogen uptake of the catalyst at that same time. This process is especially critical for activating highly concentrated catalyst slurries, typically 25 to 50 wt %. Activation of slurries of CuO/ZnO/Al.sub.2 O.sub.3 catalyst is useful in carrying out the liquid phase methanol or the liquid phase shift reactions.

In-situ activation of CuO/ZnO/Al.sub.2 O.sub.3 catalysts in the liquid

A process for the integration of a chemical absorption separation of oxygen and nitrogen from air with a combustion process is set forth wherein excess temperature availability from the combustion process is more effectively utilized to desorb oxygen product from the absorbent and then the sensible heat and absorption reaction heat is further utilized to produce a high temperature process stream. The oxygen may be utilized to enrich the combustion process wherein the high temperature heat for desorption is conducted in a heat exchange preferably performed with a pressure differential of less than 10 atmospheres which provides considerable flexibility in the heat exchange.

Cascade heat recovery with coproduct gas production

A method for reheating of a catalytic reactor by successive oxidations and reductions of a multiple oxidation state catalyst. Heat is added to the catalyst bed by a series of successive oxidation and reduction reactions occurring on the catalyst. Both catalyst oxidation and catalyst reduction are exothermic reactions, and both reactions generate heat to increase the temperature of the catalyst bed.

Catalytic dehydrogenation reactor cycle

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Allentown, PA, United States of America

Pradip Rao