Daniel J Hawrysz

US Patent:

20070208432, Sep 6, 2007

Filed:

May 31, 2005

Appl. No.:

11/579193

Inventors:

Daniel Hawrysz - HOUSTON TX, US

International Classification:

G05B 15/00
F25J 1/00

US Classification:

700001000, 062611000

Abstract:

The current invention is related to methods of designing hydrocarbon fluid processing plants and methods of producing hydrocarbon fluids using hydrocarbon fluid processing plants. More particularly, some embodiments of the invention are related to methods of designing natural gas liquefaction plants and methods of producing LNG using natural gas liquefaction plants. One embodiment of the invention includes a method of designing a hydrocarbon fluid processing plant, including: A) providing a process unit configuration for one or more processing units included in a hydrocarbon fluid processing plant; B) determining a cost to capacity relationship for a plurality of equipment types included in the one or more processing units; C) running a process simulation model to obtain a process simulation for the process unit configuration, the process simulation including the estimated capacity of the plurality of equipment types; D) determining a cost measure for the process simulation, the cost measure including an equipment cost measure determined using said estimated capacity of the plurality of equipment types and the cost to capacity relationships; E) altering a process variable in the process simulation model; and F) repeating steps C through E a plurality of times.

US Patent:

20070227185, Oct 4, 2007

Filed:

Jun 6, 2005

Appl. No.:

11/579129

Inventors:

John Stone - Kingwood TX, US
Daniel Hawrysz - Houston TX, US
E. Kimble - Sugar Land TX, US

International Classification:

F25J 1/00

US Classification:

062611000

Abstract:

A method for liquefying a natural gas stream is provided. In one embodiment, the method includes placing a mixed component refrigerant in a heat exchange area with a process stream; separating the mixed component refrigerant at one or more pressure levels to produce a refrigerant vapor and a refrigerant liquid; bypassing the refrigerant vapor around the heat exchange area to a compression unit; and passing the refrigerant liquid to the heat exchange area. In another embodiment, the method further includes partially evaporating the refrigerant liquid stream within the heat exchange area to retain a liquid fraction of at least 1% by weight.

US Patent:

20070193303, Aug 23, 2007

Filed:

Jun 10, 2005

Appl. No.:

11/629744

Inventors:

Daniel Hawrysz - Houston TX, US
John Stone - Kingwood TX, US

Assignee:

EXXONMOBIL UPSTREAM RESEARCH COMPANY - Houston TX

International Classification:

F25J 1/00
F25J 3/00

US Classification:

062612000, 062620000

Abstract:

The current invention is related to hydrocarbon fluid processing plants, methods of designing hydrocarbon fluid processing plants, methods of operating hydrocarbon fluid processing plants, and methods of producing hydrocarbon fluids using hydrocarbon fluid processing plants. More particularly, some embodiments of the invention are related to natural gas liquefaction plants, methods of designing natural gas liquefaction plants, methods of operating natural gas liquefaction plants and methods of producing LNG using natural gas liquefaction plants. One embodiment of the invention includes a hydrocarbon fluid processing plant including a plurality of process unit module types, the plurality of process unit module types including at least a first process unit module type including one or more first process unit modules and a second process unit module type including two or more integrated second process unit modules wherein at least one of the first process unit modules and at least one of the second process unit modules are sized at their respective substantially maximum processing efficiency.