Terry D Haymon

US Patent:

20040152929, Aug 5, 2004

Filed:

Nov 12, 2003

Appl. No.:

10/477502

Inventors:

William Clarke - Brazoria TX, US
Terry Haymon - Brazoria TX, US
John Henley - Midland MI, US
Daniel Hickman - Midland MI, US
Mark Jones - Midland MI, US
Matt Miller - Lake Jackson TX, US
Thomas Morris - Lake Jackson TX, US
Daniel Reed - Angleton TX, US
Lawrence Samson - Lake Jackson TX, US
Steven Smith - Baton Rouge LA, US

International Classification:

C07C017/152

US Classification:

570/224000

Abstract:

In one aspect, a process for producing vinyl chloride from ethane/ethylene involving: (a) combining ethane, ethylene, or mixtures thereof with an oxygen source and a chlorine source in a reactor containing a suitable catalyst under conditions sufficient to convert substantially all of the C2 hydrocarbon fed and to produce a product stream comprising vinyl chloride and hydrogen chloride; and (b) recycling unreacted hydrogen chloride back for use in Step (a). No C2 hydrocarbon recycle is required in this process. In another aspect, a process for producing vinyl chloride involving: (a) combining ethane, optionally ethylene, an oxygen source, and a chlorine source in a reactor containing a suitable catalyst under conditions sufficient to produce vinyl chloride and hydrogen chloride; (b) catalytically reacting said hydrogen chloride in a second reactor to provide a second reactor effluent essentially devoid of hydrogen chloride; and (c) recycling said second reactor effluent to step (a). Optionally, the second process may be run under conditions to react C2 hydrocarbons to extinction and thereby eliminate a need for C2 hydrocarbon recycle. Either process may include a hydrogenation unit for converting cis/trans-1,2-dichloroethylenes) to ethylene dichloride.

US Patent:

20050027084, Feb 3, 2005

Filed:

Apr 23, 2002

Appl. No.:

10/477479

Inventors:

William Clarke - Brazoria TX, US
Terry Haymon - Brazoria TX, US
John Henley - Midland MI, US
Daniel Hickman - Midland MI, US
Mark Jones - Midland MI, US
Matt Miller - Lake Jackson TX, US
Thomas Morris - Lake Jackson TX, US
Daniel Reed - Angleton TX, US
Lawrence Samson - Lake Jackson TX, US
Albert Schweizer - Midland MI, US
Steve Smith - Baton Rogue LA, US

International Classification:

C08F002/00

US Classification:

526068000, 526344000, 422131000

Abstract:

The preparation of vinyl halide monomer, and further to polyvinyl halide, starting from Ccompounds, involving conversion of methane or methanol to methyl halide; condensation of methyl halide to ethylene and co-product hydrogen halide; oxidative halogenation of ethylene to vinyl halide monomer; separation of vinyl halide monomer from any methyl halide present in the vinyl halide monomer stream; optional recycling of the methyl halide recovered to the condensation step; and recovery and optional recycling of the co-product hydrogen halide. Optionally, the vinyl halide monomer may be polymerized to polyvinyl halide to facilitate separation of the monomer from methyl halide. Methyl halide may be obtained via oxidative halogenation of methane in the presence of a rare earth halide or rare earth oxyhalide catalyst. Optionally, the methyl halide may be converted to methanol.

US Patent:

51201291, Jun 9, 1992

Filed:

Oct 15, 1990

Appl. No.:

7/597941

Inventors:

Stuart Farquharson - Freeport TX
Leslie J. May - Lake Jackson TX
Terry D. Haymon - Brazoria TX

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

G01N 2105
G01M 304

US Classification:

356246

Abstract:

An improvement upon spectroscopic cells of the type that have a single window sealed to each window opening of the cell body. The improvement is: (1) to position an additional window at each such opening, each such window being juxtaposed, spaced apart and biplanar with each original window so that there is a sealed space between each additional window and each original window; and (2) to position at least two passageways through the body of the cell, each such passageway in fluid communication with each of the above formed sealed spaces so that any leakage of a sample past the original seal is vented from the cell via one of the passageways to a detector to be detected. In a highly preferred embodiment of the present invention each such sealed space contains a spacer ring and the body is provided with additional passageways so that a purge fluid, such as nitrogen, can be flowed through the passageways and the sealed space to a flow through detector, such as a thermal conductivity detector, to detect any leakage of a fluid sample past one of the original seals.