Thomas A Czuppon

6855272, Feb 15, 2005

Jul 18, 2001

09/908307

Robert Burlingame - Houston TX, US
Thomas A. Czuppon - Houston TX, US
Larry G. Hackemesser - Houston TX, US

Kellogg Brown & Root, Inc. - Houston TX

C01B003/38
B01J008/06

252373, 422196, 422197, 422198, 422200, 422201, 422205, 422222

Syngas production process and reforming exchanger. The process involves passing a first portion of hydrocarbon feed mixed with steam and oxidant through an autothermal catalytic steam reforming zone to form a first reformed gas of reduced hydrocarbon content, passing a second portion of the hydrocarbon feed mixed with steam through an endothermic catalytic steam reforming zone to form a second reformed gas of reduced hydrocarbon content, and mixing the first and second reformed gases and passing the resulting gas mixture through a heat exchange zone for cooling the gas mixture and thereby supplying heat to the endothermic catalytic steam reforming zone. The endothermic catalytic steam reforming zone and the heat exchange zone are respectively disposed tube side and shell side within a shell-and-tube reforming exchanger. The reforming exchanger comprises a plurality of tubes packed with low pressure drop catalyst-bearing monolithic structures wherein an inside diameter of the tubes is less than 4 times a maximum edge dimension of the catalyst structures.

8216531, Jul 10, 2012

Jan 5, 2005

10/905460

Robert Burlingame - Houston TX, US
Thomas Czuppon - Houston TX, US
Larry G. Hackemesser - Houston TX, US

Kellogg Brown & Root LLC - Houston TX

B01J 8/00

422653, 422629, 422631, 422634, 422641, 422642, 422645, 422650, 422652, 422198, 422201, 422205, 165160, 165161, 165162, 165172, 165173, 165174, 423650, 423652, 4236481

Disclosed are a syngas production process and a reforming exchanger. The process involves passing a first portion of hydrocarbon feed mixed with steam and oxidant through an autothermal catalytic steam reforming zone to form a first reformed gas of reduced hydrocarbon content, passing a second portion of the hydrocarbon feed mixed with steam through an endothermic catalytic steam reforming zone to form a second reformed gas of reduced hydrocarbon content, and mixing the first and second reformed gases and passing the resulting gas mixture through a heat exchange zone for cooling the gas mixture and thereby supplying heat to the endothermic catalytic steam reforming zone. The endothermic catalytic steam reforming zone and the heat exchange zone are respectively disposed tube side and shell side within a shell-and-tube reforming exchanger. The reforming exchanger comprises a plurality of tubes packed with low pressure drop catalyst-bearing monolithic structures wherein an inside diameter of the tubes is less than 4 times a maximum edge dimension of the catalyst structures.

52232387, Jun 29, 1993

Jan 16, 1992

7/821209

Thomas A. Czuppon - Houston TX

The M. W. Kellogg Company - Houston TX

C01C 104
C07C27300

423359

A method is described which enables ammonia plant process condensate contaminated with ammonia, carbon dioxide and methanol and urea plant condensate contaminated with urea, ammonia, carbon dioxide and other combined forms of ammonia and carbon dioxide to be simultaneously converted, in a single treatment vessel, substantially and continuously to a vaporous stream rich in ammonia, carbon dioxide and methanol and an liquid stream poor in ammonia, carbon dioxide, methanol and urea. The vaporous stream thus produced is recycled and employed as a feedstock in the reforming section in the ammonia plant.

57440093, Apr 28, 1998

Jul 7, 1995

8/499510

Vishnu Deo Singh - Sugarland TX
Richard Bruce Strait - Kingwood TX
Thomas Anthony Czuppon - Houston TX

The M. W. Kellogg Company - Houston TX

B01D 128
B01D 310

203 42

An improved urea recovery process is presented. In the improved process, multiple vacuum rated surface condensers used to condense water vapor evolved during urea vacuum evaporation/concentration are replaced by a direct contact cooler/absorber to obtain substantial capital and utility cost savings. Improved heat exchange efficiency of the present process significantly reduces cooling water usage in comparison to the surface condensers.

61715700, Jan 9, 2001

Oct 12, 1998

9/169874

Thomas A. Czuppon - Houston TX

Kellogg Brown & Root, Inc. - Houston TX

C01C 104

423359

A vertical tubular reactor for converting ammonia synthesis loop purge gas to ammonia; a method for converting ammonia synthesis loop purge gas to form additional ammonia; and a method for retrofitting a conventional ammonia plant having a synthesis loop using an iron-based synthesis catalyst and having a purge gas stream, the method including a supplemental ammonia converter for the purge gas stream. The supplemental ammonia converter is a shell and tube reactor. The tubes are filled with a catalyst comprising a platinum group metal such as ruthenium. The tubes are maintained in a substantially isothermal condition by boiling water in the shell side. As a retrofit modification to an existing ammonia synthesis plant, the purge stream is passed through the supplemental ammonia converter on a once-through basis to form additional ammonia and reduce the amount of purge gas. Advantages of the retrofit modification include lower energy consumption, lower purge rates and higher ammonia production rates.