Xin Hu Zhu

US Patent:

7682576, Mar 23, 2010

Filed:

Aug 1, 2007

Appl. No.:

11/832143

Inventors:

Xin X. Zhu - Long Grove IL, US
Keith A. Couch - Arlington Heights IL, US
James P. Glavin - Naperville IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

F27B 15/08
F27B 15/00
F01K 17/00
F01K 13/00

US Classification:

422144, 422139, 422141, 422143, 422145, 422146, 422147, 60648, 60676

Abstract:

Disclosed is an apparatus for recovering power from an FCC product. The dry gas is combusted and combined with FCC regenerator flue gas to raise the power recovery capability of the flue gas. The flue gas can be used to generate electrical power or steam. Alternatively or additionally, dry gas from an FCC product stream is separated and delivered to an expander to recover power before combustion.

US Patent:

7686944, Mar 30, 2010

Filed:

Aug 1, 2007

Appl. No.:

11/832136

Inventors:

Xin X. Zhu - Long Grove IL, US
Keith A. Couch - Arlington Heights IL, US
James P. Glavin - Naperville IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C10G 57/00

US Classification:

208113, 422139, 422141, 422143, 422144, 422145, 422146, 422147, 60648, 60676

Abstract:

Disclosed is a process for recovering power from an FCC product. The dry gas is combusted and combined with FCC regenerator flue gas to raise the power recovery capability of the flue gas. The flue gas can be used to generate electrical power or steam. Alternatively or additionally, dry gas from an FCC product stream is separated and delivered to an expander to recover power before combustion.

US Patent:

7727380, Jun 1, 2010

Filed:

Aug 1, 2007

Appl. No.:

11/832147

Inventors:

Keith A. Couch - Arlington Heights IL, US
Xin X. Zhu - Long Grove IL, US
James P. Glavin - Naperville IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C10G 57/00

US Classification:

208113, 422139, 422141, 422143, 422144, 422145, 422146, 422147, 60648, 60676, 502 34, 502 38, 502 50, 502 55, 502 56

Abstract:

Disclosed is a process for combusting dry gas to heat the air supplied to an FCC regenerator to increase its temperature and minimize production of undesirable combustion products. Preferably, the dry gas is a selected FCC product gas. Alternatively or additionally, dry gas from an FCC product stream is separated and delivered to an expander to recover power before combustion.

US Patent:

7727486, Jun 1, 2010

Filed:

Aug 1, 2007

Appl. No.:

11/832152

Inventors:

Keith A. Couch - Arlington Heights IL, US
Xin X. Zhu - Long Grove IL, US
James P. Glavin - Naperville IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

F27B 15/08
F27B 15/00
F01K 17/00
F01K 13/00

US Classification:

422144, 422139, 422141, 422143, 422145, 422146, 422147, 60648, 60676

Abstract:

Disclosed is an apparatus for combusting dry gas to heat the air fed to an FCC regenerator to increase its temperature and minimize production of undesirable combustion products. Preferably, the dry gas is a selected FCC product gas. Alternatively or additionally, dry gas from an FCC product stream is separated and delivered to an expander to recover power before combustion.

US Patent:

7785399, Aug 31, 2010

Filed:

Jan 16, 2009

Appl. No.:

12/354949

Inventors:

Richard Huang - Vernon Hills IL, US
Lamar A. Davis - West Dundee IL, US
William J. Lechnick - Glen Ellyn IL, US
Xin Zhu - Long Grove IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01D 53/02

US Classification:

95114, 95186, 95187, 95191, 95194, 95227, 423226, 423228, 423229

Abstract:

Systems and processes utilize one or more methods of providing overhead waste process heat to increase the feed temperature of the hot solvent stripping regeneration loop in an acid gas removal process. A heated rich solvent stream can be the primary feed for the hot solvent stripping regeneration loop, and one or more slip streams can be heated and then combined with the heated rich solvent stream to form a combined rich solvent stream prior to further processing in downstream units to remove acid gas from the solvent. A first slip stream can be heated in a stripper gas heat exchanger by heat exchange with a stripped gas stream. A second slip stream can be heated in a regenerator exchanger by heat exchange with an acid gas stream. A third slip stream can be heated in a recycle gas exchanger by heat exchange with a compressed recycle gas stream.

US Patent:

8007729, Aug 30, 2011

Filed:

Mar 20, 2009

Appl. No.:

12/408060

Inventors:

Yunbo Liu - Beijing, CN
Xin X. Zhu - Long Grove IL, US
Daniel N. Myers - Arlington Heights IL, US
Patrick D. Walker - Park Ridge IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

F27B 15/08
F01K 17/00
F01K 13/00

US Classification:

422144, 422139, 422141, 422143, 422145, 422146, 422147, 60648, 60676, 165 66

Abstract:

Hydrocarbon feed to a catalytic reactor can be heat exchanged with flue gas from a catalyst regenerator. This innovation enables recovery of more energy from flue gas thus resulting in a lower flue gas discharge temperature. As a result, other hot hydrocarbon streams conventionally used to preheat hydrocarbon feed can now be used to generate more high pressure steam.

US Patent:

8197677, Jun 12, 2012

Filed:

Dec 19, 2011

Appl. No.:

13/329647

Inventors:

Michael A. Schultz - Glen Ellyn IL, US
Xin X. Zhu - Long Grove IL, US
Jibreel A. Qafisheh - Prospect Heights IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01D 3/32
B01D 3/26

US Classification:

208350, 208353

Abstract:

One exemplary embodiment can be a system for separating a plurality of naphtha components. The system can include a column, an overhead condenser, and a side condenser. Generally, the column includes a dividing imperforate wall with one surface facing a feed and another surface facing at least one side stream. Typically, the wall extends a significant portion of the column height to divide the portion into at least two substantially vertical, parallel contacting sections. Typically, the overhead condenser receives an overhead stream including a light naphtha from the column. Usually, a side condenser receives a process stream from the column and returns the stream to the column to facilitate separation. A cooling stream may pass through the overhead condenser and then the side condenser.

US Patent:

8231847, Jul 31, 2012

Filed:

Nov 9, 2009

Appl. No.:

12/614921

Inventors:

Joao Jorge da Silva Ferreira Alves - Arlington Heights IL, US
Saadet Ulas Acikgoz - Des Plaines IL, US
Xin X. Zhu - Long Grove IL, US
Laura E. Leonard - Western Springs IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01J 8/00
B01J 10/00
C10G 11/00

US Classification:

422608, 42610, 42612, 42618, 42214, 208102, 208103, 208113, 208 72

Abstract:

An apparatus is disclosed for recovering product from catalytically converted product streams. Gaseous unstabilized naphtha from an overhead receiver from a main fractionation column is compressed in a compressor. Liquid unstabilized naphtha from the overhead receiver and liquid naphtha fraction from the compressor are sent to a naphtha splitter column upstream of a primary absorber. Consequently, less naphtha is circulated in the gas recovery system.