Koenraad J Herrebout

US Patent:

6447673, Sep 10, 2002

Filed:

Mar 12, 2001

Appl. No.:

09/803781

Inventors:

Merry Holli Garrett Cordera - Houston TX
Charles Allen Comeaux - Houston TX
Koenraad Jacques Herrebout - Houston TX
Joe David Hunter - Friendswood TX

Assignee:

Fina Technology, Inc. - Houston TX

International Classification:

C10G 4500

US Classification:

208212, 208204, 208213, 208214, 208 89, 208110

Abstract:

A hydrofining process in which a sulfur- and hydrocarbon-containing processing stream is supplied to a multi-stage hydrotreating reactor incorporating separate stages of cobalt molybdenum catalysts. Hydrogen may be supplied concurrently or counter-currently with the hydrocarbon-containing processing stream. The processing stream is passed into contact with an initial catalyst stage comprising a cobalt molybdenum desulfurization catalyst present in a minor amount of the total composite amount of catalysts within the reactor. Thereafter the processing stream is passed through a subsequent catalyst stage comprising a major amount of cobalt molybdenum hydrocracking catalyst. The effluent stream having a reduced sulfur content is then withdrawn from the hydrotreating reactor. The initial and subsequent catalyst stages are separated by an intervening sector within the reactor containing an inert particulate refractory material, specifically silica particles generally spheroidal in shape.

US Patent:

20030062291, Apr 3, 2003

Filed:

Apr 23, 2002

Appl. No.:

10/127930

Inventors:

Jean-Pierre Dath - Beloeil, BE
Walter Vermeiren - Houthalen, BE
Koenraad Herrebout - Houston TX, US

International Classification:

C10G011/00
C10G011/02
C10G011/04

US Classification:

208/120010

Abstract:

A process for cracking an olefin-containing hydrocarbon feedstock which is selective towards light olefins in the effluent, the process comprising passing a hydrocarbon feedstock containing one or more olefins through a reactor containing a crystalline silicate selected from an MFI-type crystalline silicate having a silicon/aluminium atomic ratio of at least 180 and an MEL-type crystalline silicate having a silicon/aluminium atomic ratio of from 150 to 800 which has been subjected to a steaming step, at an inlet temperature of from 500 to 600 C., at an olefin partial pressure of from 0.1 to 2 bars and the feedstock being passed over the catalyst at an LHSV of from 5 to 30hto produce an effluent with an olefin content of lower molecular weight than that of the feedstock, wherein the olefin-containing hydrocarbon feedstock includes a C-containing overhead cut from a first fractionator which has been fed with a C hydrocarbon feedstock, the-bottom fraction from the first fractionator being a C cut and the C hydrocarbon feedstock comprises a bottom fraction from a second fractionator which has been fed with a feedstock having at least C hydrocarbons, and the overhead from the second fractionator comprises a Ccontaining cut, optionally further containing Chydrocarbons.