Paul M Mathias

US Patent:

20130149224, Jun 13, 2013

Filed:

Dec 7, 2011

Appl. No.:

13/313814

Inventors:

Paul M. Mathias - Aliso Viejo CA, US

Assignee:

FLUOR TECHNOLOGIES CORPORATION - Aliso Viejo CA

International Classification:

B01D 53/52
B01D 53/40

US Classification:

423220, 423210, 422129

Abstract:

Systems and methods are described for selectively removing an acid gas from a feed stream to reduce co-absorption of CO. The system can include an absorber configured to contact at least a portion of the feed stream with a caustic solution or other basic solvents to produce a clean stream substantially depleted of the acid gas. To reduce co-absorption of COby the caustic solution to less than 10% of the COpresent in the feed stream, the absorber can be further configured to receive a driver gas that is substantially non-reactive with the caustic solution.

US Patent:

20220372943, Nov 24, 2022

Filed:

Jul 29, 2022

Appl. No.:

17/876650

Inventors:

- Saratoga CA, US
Paul M. Mathias - Aliso Viejo CA, US
Shankar Ramamurthy - Saratoga CA, US
Steven F. Sciamanna - Orinda CA, US

International Classification:

F03B 3/04
F03B 13/00
F04B 19/04

Abstract:

Disclosed techniques include working fluid exergy recovery using hybrid processing. A supply of working fluid at a first pressure and a first temperature is accessed. The working fluid is compressed. The compressing yields the working fluid at a second pressure. The second pressure is greater than the first pressure. The working fluid at the second pressure and a second temperature is warmed using a first heat exchanger. The second temperature is greater than the first temperature. The working fluid at the second temperature is in a gaseous state. The working fluid is expanded in a gaseous state to a third pressure. The expanding is accomplished using a first liquid piston expander. An engine is driven to recover work from the working fluid in a gaseous state. The engine is powered by liquid from the first liquid piston expander.

US Patent:

20220268515, Aug 25, 2022

Filed:

Apr 22, 2022

Appl. No.:

17/726589

Inventors:

- Saratoga CA, US
Paul M. Mathias - Aliso Viejo CA, US
Shankar Ramamurthy - Saratoga CA, US
Steven F Sciamanna - Orinda CA, US

International Classification:

F25J 1/00
F28D 20/00
F04B 19/04
F04B 53/08

Abstract:

Disclosed techniques include gas liquefaction using hybrid processing. A gas is compressed adiabatically to produce a compressed gas at a first pressure. The compressing a gas adiabatically is accomplished using one or more compressing stages. Heat is extracted from the compressed gas at a first pressure. The heat that is extracted is collected in a thermal store. The compressed gas at a first pressure is further compressed. The further compressing is accomplished using a first liquid piston compressor. The further compressing produces a compressed gas at a second pressure. The first liquid piston compressor is cooled using a liquid spray. The compressed gas at a second pressure is cooled using a heat exchanger. The cooling accomplishes liquefaction of the compressed gas at a second pressure. The gas that was liquefied is stored for future use. The gas that was liquefied is used to perform work.

US Patent:

20170203963, Jul 20, 2017

Filed:

Jan 19, 2016

Appl. No.:

15/000389

Inventors:

- Sugar Land TX, US
Paul M. Mathias - Aliso Viejo CA, US

International Classification:

C01B 3/04
C01B 17/04

Abstract:

A method of producing hydrogen comprising receiving a sour gas comprising CO, HS, and ammonia from a sour water stripper; introducing the sour gas to an absorption system to produce an ammonia rich gas and a sulfide rich gas, wherein the ammonia rich gas comprises ammonia and CO, and wherein the sulfide rich gas comprises HS and CO; compressing the ammonia rich gas in a compressing unit to a pressure of 400-600 psig to produce a compressed ammonia rich gas; introducing the compressed ammonia rich gas to an ammonia cracker unit comprising a catalyst to produce a cracked gas, wherein the ammonia cracker unit is characterized by a cracking temperature of 450-550 C., and wherein the cracked gas comprises hydrogen, nitrogen, and CO; and introducing the cracked gas to a PSA unit to produce hydrogen and a PSA tail gas, wherein the PSA tail gas comprises nitrogen and CO.

US Patent:

20160327337, Nov 10, 2016

Filed:

Apr 20, 2016

Appl. No.:

15/133305

Inventors:

- Sugar Land TX, US
Joseph Yonkoski - Irvine CA, US
Paul M. Mathias - Aliso Viejo CA, US

International Classification:

F25J 3/06
B01D 53/26
B01D 7/00

Abstract:

Systems and methods of COdesublimation are presented in which refrigeration content is retained within the system. Most preferably, refrigeration content is recycled by providing the refrigeration content of a CO-lean feed gas to the CO-containing feed gas and to pre-cooling of a desublimator, and/or by providing refrigeration of effluent of a desublimator in regeneration to a refrigerant in a closed refrigeration cycle for deep-cooling of another desublimator.

US Patent:

20150014590, Jan 15, 2015

Filed:

Jul 11, 2014

Appl. No.:

14/329725

Inventors:

- Aliso Viejo CA, US
Paul M. Mathias - Aliso Viejo CA, US
Paul E. Koppel - Hollywood FL, US
Sanjiv Dabee - Aliso Viejo CA, US

International Classification:

C01B 17/04

US Classification:

252372, 422187

Abstract:

Systems and methods for pre-treatment of acid gas are presented in which ammonium is removed from the acid gas in an absorber that is operated at significantly elevated temperature using dilute phosphoric acid. While seemingly incompatible, absorbing ammonia at high heat in the absorber will allow for production of a diammonium phosphate product that is ultra-low in residual sulfurous compounds and prevent crystallization of phosphate salts due to the increased solubility of the salts in the hot diluted solvent.

US Patent:

20140090415, Apr 3, 2014

Filed:

Jul 11, 2013

Appl. No.:

13/940019

Inventors:

- Aliso Viego CA, US
Joseph Yonkoski - Irvine CA, US
Paul Mathias - Aliso Viejo CA, US

International Classification:

B01D 53/00

US Classification:

62602

Abstract:

Systems and methods of COdesublimation are presented in which refrigeration content is retained within the system. Most preferably, refrigeration content is recycled by providing the refrigeration content of a CO-lean feed gas to the CO-containing feed gas and to pre-cooling of a desublimator, and/or by providing refrigeration of effluent of a desublimator in regeneration to a refrigerant in a closed refrigeration cycle for deep-cooling of another desublimator.