Search

Douglas Stuart Hubbell

from Sudbury, MA
Age ~71
Get Report
Also known as:
Douglas S Hubbell, Sarah C Hubbell, Sarah D Hubbell, Doug S Hubbell
Phone and address:
5 Hollow Oak Dr, North Sudbury, MA 01776
(978) 443-4756
Related to:
Daniel Hubbell
Connected to:
Chrissy Hubbell, 76Diana M Hubbell, 57Eliot Hubbell, 35Glenn A Hubbell, 73Joyce Hubbell, 62Judith T Hubbell, 67Mitch A Hubbell, 36Rachelle Hubbell, 34Ronald D Hubbell, 62Claudia C Hubber, 60

Douglas Hubbell Phones & Addresses

  • 5 Hollow Oak Dr, Sudbury, MA 01776 (978) 443-4756
  • Natick, MA

Work

Position: Professional/Technical

Education

Degree: Associate degree or higher

Publications

Us Patents

Production Of High Purity Meta-Xylene

View page
US Patent:
6376736, Apr 23, 2002
Filed:
Dec 1, 2000
Appl. No.:
09/701792
Inventors:
Philippe W. M. Rutten - Delft, NL
James S. Law - Leidschendam, NL
Douglas S. Hubbell - Sudbury MA
Assignee:
Washington Group International, Inc. - Boise ID
International Classification:
C07C 700
US Classification:
585815, 585805, 585812, 585813
Abstract:
A continuous process for integrated processing of a C aromatic hydrocarbon stream is disclosed for recovery of a high purity meta-xylene product in conjunction with efficient separation and recovery of purified para-xylene and, optionally, purified ortho-xylene products.

Condensation Reduction In Fluid Mixing

View page
US Patent:
7402290, Jul 22, 2008
Filed:
Jul 2, 2003
Appl. No.:
10/520069
Inventors:
Douglas S. Hubbell - Sudbury MA, US
Dino Pizzelli - Hingham MA, US
Edward P. Hunt - North Attleboro MA, US
Glenn D. Nasman - Westwood MA, US
Assignee:
Stone & Webster Process Technology Inc. - Houston TX
International Classification:
B01J 3/00
F02M 15/02
US Classification:
422242, 422226, 422293, 261133, 261 181, 261 56, 261 57
Abstract:
Methods and apparatus are disclosed for mixing fluid streams of different compositions to minimize fluid condensation inside a mixing vessel where the objective is to produce an all-vapor mixture product.

Crystallization Process For Purification Of Paraxylene

View page
US Patent:
58116290, Sep 22, 1998
Filed:
Sep 20, 1996
Appl. No.:
8/710733
Inventors:
Douglas S. Hubbell - Sudbury MA
Philippe W. M. Rutten - Delft, NL
Assignee:
Raytheon Engineers & Constructors, Inc. - Lexington MA
International Classification:
C07C 714
US Classification:
585815
Abstract:
Improved process and apparatus for purifying paraxylene from mixed C8-aromatic feedstocks are disclosed in which the use of at least two crystallization stages operated at different temperatures in combination with a final product separator improves purity and recovery while reducing capital and energy costs.

Aromatics Alkylation Process

View page
US Patent:
20150197466, Jul 16, 2015
Filed:
Jul 25, 2013
Appl. No.:
14/416193
Inventors:
- Boston MA, US
Douglas Hubbell - Sudbury MA, US
Maruti Bhandarkar - Kingwood TX, US
Vijay Nanda - Houston TX, US
Assignee:
BADGER LICENSING LLC - Boston MA
International Classification:
C07C 7/13
C07C 2/66
Abstract:
In a process for alkylating an aromatic hydrocarbon feedstock with an olefin feedstock, at least one of the aromatic hydrocarbon and olefin feedstocks is passed through a pretreatment unit containing an adsorbent such that the adsorbent removes impurities contained by the feedstock. Passage of the at least one feedstock through the pretreatment unit is then terminated and a heated inert gas is passed through the pretreatment unit such that the inert gas desorbs impurities from the adsorbent to produce an inert gas effluent stream containing the desorbed impurities. A condensable fluid is added to at least part of the inert gas effluent stream such that at least a portion of the impurities contained therein condense with said fluid to leave a purified inert gas stream, which is recycled to the pretreatment unit.
Control profile
Douglas Stuart Hubbell from Sudbury, MA, age ~71 Get Report