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Xiaobo W Zheng

from Houston, TX
Age ~50
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Also known as:
Ziaobo Zheng, Sdf Sf
Phone and address:
1302 Cohn St, Houston, TX 77007
Related to:
James L Zheng, 62Shiyu Zhang, 58Wanzhi XuYi I Zheng, 57Tom Xu Zhong, 58Chiehming Chang, 58Yee ZhengZhong HuDingqi ZhengFeng Zheng, 50
Connected to:
Amber Zheng, 55Anne Zheng, 30Bailey Zheng, 67Bang Q Zheng, 47Belinda M Zheng, 35Bingqing Zheng, 35Bingzi Zheng, 48Bruce Zheng, 30Carl Z Zheng, 87Carol L Zheng, 36

Xiaobo Zheng Phones & Addresses

  • 1302 Cohn St, Houston, TX 77007
  • 1908 1St St, Tucson, AZ 85719 (520) 319-0515
  • 951 10Th St, Tucson, AZ 85719 (520) 620-6065
  • 751 10Th St, Tucson, AZ 85719
  • Albany, CA

Work

Company: Exxonmobil Jan 2013 to Sep 2014 Position: Exxonmobil chemical technology licensing technical support

Education

Degree: Doctorates, Doctor of Philosophy School / High School: University of Arizona 2000 to 2005 Specialities: Chemical Engineering

Skills

Chemical Engineering • Catalysis • Chemistry • Heterogeneous Catalysis • Pilot Plant • Xylene Process and Technology • High Throughput Screening • Catalyst Research and Development • Commercialization • Project Management • Characterization • Process Simulation • Aspen Hysys • Surface Chemistry • Pro Ii • Energy • Nanotechnology • Materials Science • Spectroscopy • Polymers • Biofuels • Distillation

Languages

English • Mandarin

Industries

Oil & Energy

Resumes

Resumes

Xiaobo Zheng Photo 1

Section Head, Aromatics Technology

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Location:
Houston, TX
Industry:
Oil & Energy
Work:
Exxonmobil Jan 2013 - Sep 2014
Exxonmobil Chemical Technology Licensing Technical Support
Exxonmobil Chemical Jan 2013 - Sep 2014
Section Head, Aromatics Technology
Exxonmobil Jan 2011 - Dec 2012
Catalyst Development and Manufacture Support Engineer
Exxonmobil Oct 2007 - Dec 2010
Senior Research Engineer
Uc Berkeley Feb 2006 - Oct 2007
Research Associate
Education:
University of Arizona 2000 - 2005
Doctorates, Doctor of Philosophy, Chemical Engineering University of Arizona 2002 - 2004
Masters, Master of Engineering, Engineering, Electronics Engineering, Electronics Beijing University of Chemical Technology 1995 - 1998
Master of Science, Masters, Chemical Engineering Beijing University of Chemical Technology 1991 - 1995
Bachelors, Bachelor of Science, Chemical Engineering
Skills:
Chemical Engineering
Catalysis
Chemistry
Heterogeneous Catalysis
Pilot Plant
Xylene Process and Technology
High Throughput Screening
Catalyst Research and Development
Commercialization
Project Management
Characterization
Process Simulation
Aspen Hysys
Surface Chemistry
Pro Ii
Energy
Nanotechnology
Materials Science
Spectroscopy
Polymers
Biofuels
Distillation
Languages:
English
Mandarin

Publications

Us Patents

Production Of Para-Xylene By The Methylation Of Benzene And/Or Toluene

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US Patent:
20110092755, Apr 21, 2011
Filed:
Sep 30, 2010
Appl. No.:
12/894778
Inventors:
James R. Lattner - La Porte TX, US
Mark P. Hagemeister - Houston TX, US
Jon Edmond Randolph Stanat - Westhampton Beach NY, US
John Di-Yi Ou - Houston TX, US
Xiaobo Zheng - Houston TX, US
Lu Han - Herndon VA, US
International Classification:
C07C 15/08
US Classification:
585401
Abstract:
In a process for the production of para-xylene, methanol is preheated to a first temperature, an aromatic feedstock comprising toluene and/or benzene is preheated to a second temperature and the preheated methanol and aromatic feedstocks are fed to a reactor at a first methanol to aromatic feedstock molar ratio. The preheated aromatic feedstock is contacted with the preheated methanol under alkylation conditions in the reactor in the presence of a catalyst so that the methanol reacts with the aromatic feedstock to produce an effluent comprising para-xylene. During the reaction, a temperature is measured within the reactor and is compared with a predetermined optimal temperature. The methanol to aromatic feedstock molar ratio is then adjusted in a manner to reduce any difference between the measured and predetermined optimal temperatures in the reactor.

Regeneration Of Metal-Containing Catalysts

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US Patent:
20120083637, Apr 5, 2012
Filed:
Aug 26, 2011
Appl. No.:
13/218520
Inventors:
Kenneth R. Clem - Humble TX, US
Larry L. Iaccino - Seabrook TX, US
Mobae Afeworki - Phillipsburg NJ, US
Juan D. Henao - Lebanon NJ, US
Neeraj Sangar - League City TX, US
Xiaobo Zheng - Houston TX, US
Lorenzo C. DeCaul - Langhorne PA, US
International Classification:
C07C 2/76
B01J 38/02
US Classification:
585415, 502 34
Abstract:
In a process for the regeneration of a coked metal-containing catalyst, the coked catalyst is contacted in a regeneration zone with an atmosphere which contains carbon dioxide and carbon monoxide at a temperature of at least 400 C.

Production Of Para-Xylene

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US Patent:
20120316375, Dec 13, 2012
Filed:
Jun 4, 2012
Appl. No.:
13/487651
Inventors:
Xiaobo Zheng - Houston TX, US
Mark P. Hagemeister - Houston TX, US
Timothy P. Bender - Houston TX, US
Robert G. Tinger - Friendswood TX, US
International Classification:
C07C 1/22
B01J 19/00
US Classification:
585450, 422187
Abstract:
The invention is a process for producing paraxylene, benzene and/or toluene is alkylated with methanol in the presence of a catalyst under conditions effective to convert said benzene and/or toluene to xylene and produce a product stream containing water, xylene and one or more phenolic impurities. The said product stream is separated into a water-rich stream and a xylene-rich stream containing one or more phenolic impurities and at least a portion of the xylene-rich stream is contacted with an aqueous solution of a base under conditions to remove at least some of the phenolic impurities from the xylene-rich stream portion.

Alkylation Of Benzene And/Or Toluene With Methanol

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US Patent:
20130217940, Aug 22, 2013
Filed:
May 30, 2012
Appl. No.:
13/483836
Inventors:
Xiaobo Zheng - Houston TX, US
John Di-Yi Ou - Houston TX, US
Mark P. Hagemeister - Houston TX, US
International Classification:
C07C 2/86
US Classification:
585469
Abstract:
The present inventors have surprisingly discovered that paraxylene selectivity is found to increase as the amount of coke on catalyst increases. In embodiments the paraxylene selectivity and productivity is maximized by controlling the amount of coke on the catalyst while maintaining xylene yield at an acceptable value. The control of coke may be achieved by one or a combination of the following techniques: increasing catalyst on-oil time, decreasing catalyst residence time in the regenerator, reducing the air or oxygen supply to the regenerator, and decreasing catalyst circulation rate, or a combination thereof.

Alkylation Process

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US Patent:
20130253245, Sep 26, 2013
Filed:
Sep 14, 2012
Appl. No.:
13/618211
Inventors:
Xiaobo Zheng - Houston TX, US
John Di-Yi Ou - Houston TX, US
Mark P. Hagemeister - Houston TX, US
Jon E. R. Stanat - Westhampton Beach NY, US
International Classification:
C07C 2/86
US Classification:
585467
Abstract:
The invention relates to the production of paraxylene by an alkylation process that also produces oxygenates. The process is controlled to utilize recycle to minimize said oxygenates.

Process For The Production Of Xylenes And Light Olefins

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US Patent:
20130296622, Nov 7, 2013
Filed:
May 7, 2012
Appl. No.:
13/465733
Inventors:
LARRY L. IACCINO - SEABROOK TX, US
S. MARK DAVIS - HUMBLE TX, US
JOHN D.Y. OU - HOUSTON TX, US
XIAOBO ZHENG - HOUSTON TX, US
International Classification:
C07C 2/86
US Classification:
585321
Abstract:
In a hydrocarbon upgrading process, a hydrocarbon feed is treated in at least one of a steam cracker, catalytic cracker, coker, hydrocracker, and reformer under suitable conditions to produce a first stream comprising olefinic and aromatic hydrocarbons. A second stream composed mainly of C+ olefinic and aromatic hydrocarbons is recovered from the first stream and is fed together with a methylating agent to a reaction zone containing a catalyst under reaction conditions including a temperature of about 450 C. to about 700 C., such that aromatics components in the second stream undergo dealkylation, transalkylation and/or methylation and aliphatic components undergo cracking and aromatization to produce a third stream having an increased xylene content compared with said second stream and a C− olefin by-product. The C− olefin by-product is recovered and para-xylene is removed from at least part of said third stream.

Aromatics Production Process

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US Patent:
20170275218, Sep 28, 2017
Filed:
Jun 5, 2017
Appl. No.:
15/613573
Inventors:
- Baytown TX, US
Kevin J. Knob - Fairfield CA, US
Dennis J. Stanley - Houston TX, US
Terri S. Vander Pol - Baytown TX, US
Chunshe J. Cao - Conroe TX, US
Xiaobo Zheng - Houston TX, US
Thierry LeFlour - Paris, FR
Jacques Rault - Paris, FR
Stephane Claudel - Verneuil sur Seine, FR
Isabelle Prevost - Rueil Malmaison, FR
Jerome Pigourier - Meudon, FR
Celia Fernandez - Paris, FR
Assignee:
ExxonMobil Chemical Patents Inc. - Baytown TX
International Classification:
C07C 5/27
C07C 7/00
C07C 15/08
C07C 7/04
C07C 6/12
Abstract:
In a process for producing para-xylene, at least one feed comprising C aromatic hydrocarbons is supplied to a dividing wall distillation column to separate the feed into a C aromatic hydrocarbon-containing stream, a Caromatic hydrocarbon-containing stream and a C aromatic hydrocarbon-containing stream. At least part of the Caromatic hydrocarbon-containing stream is then supplied to a para-xylene recovery unit to recover para-xylene from the Caromatic hydrocarbon-containing stream and produce a para-xylene depleted stream. The para-xylene depleted stream is contacted with a xylene isomerization catalyst in a xylene isomerization zone under conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream, which is then at least partially recycled to the para-xylene recovery unit.

Method And Catalyst System For Improving Benzene Purity In A Xylenes Isomerization Process

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US Patent:
20170081259, Mar 23, 2017
Filed:
Jul 28, 2016
Appl. No.:
15/222197
Inventors:
- Baytown TX, US
Hari Nair - Somerville NJ, US
Xiaobo Zheng - Houston TX, US
International Classification:
C07C 5/27
B01J 29/44
Abstract:
A process and catalyst system is disclosed for producing para-xylene from a Chydrocarbon mixture comprising ethylbenzene and at least one xylene isomer other than para-xylene. The process modifies the conventional process by operating with a higher weight hourly space velocity, lower pressure and lower hydrogen partial pressure, which allows production of on-specification benzene product without penalty with respect to ethylbenzene conversion, para-xylene approach to equilibrium or xylene losses. The catalyst system comprises a first catalyst bed comprising a first zeolite having a constraint index from 1 to 12 and an average crystal size from 0.1 to 1 micron and a platinum hydrogenation component, and a second catalyst bed comprising a second zeolite having a constraint index ranging from 1 to 12 and an average crystal size of less than 0.1 micron and a rhenium hydrogenation component.
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Xiaobo W Zheng from Houston, TX, age ~50 Get Report