Clifford S Crossland

50435060, Aug 27, 1991

Sep 17, 1990

7/583161

Clifford S. Crossland - Houston TX

C07C 264

585449

An improvement in the operation to a catalytic distillation process for the alkylation of organic aromatic compounds with an olefin contained wherein aliphatic compounds are contained in either the olefin feed stream, the aromatic feed stream or both is disclosed. Aliphatic compounds are added to the upper portion of a secondary distillation column reactor wherein aromatic is being reacted with unreacted olefin from a primary distillation column reactor to polish the conversion of olefin. The additional aliphatic compound produces an equilibrium in the secondary column wherein unreacted aromatic and alkylation product are recovered as bottoms which may be recycled to the primary distillation column reactor.

53466764, Sep 13, 1994

Jun 25, 1993

8/082517

Clifford S. Crossland - Houston TX
Alan Johnson - Oakville Ontario, CA
John Woods - Oakville Ontario, CA
Elliot G. Pitt - Mississauga, CA

B01J 808

422211

Paraffin alkylation using solid, particulate catalyst is carried out by preparing an alkane-catalyst mixture in a wash zone, passing the alkane-catalyst mixture to a plug flow reactor where a minor amount of olefin is introduced to contact the alkane-catalyst mixture and react to form alkylate and the alkane-catalyst-alkylate mixture is passed through the reactor with a minimum of back mixing to restrict the reaction of alkylate with olefin, thus substantially preventing polymerization. The alkane-catalyst-alkylate mixture, substantially free of olefin is passed to a disengaging zone where the liquid is removed and the solid particulate catalyst is recovered and returned to the wash zone for recycle. The alkane is present in the reactor in sufficient molar excess to react substantially all of the olefin. Any unreacted isoalkane is recycled to the reactor with make-up isoalkane added to maintain the molar excess.

51571960, Oct 20, 1992

Dec 24, 1990

7/632478

Clifford S. Crossland - Houston TX
Alan Johnson - Ontario, CA
John Woods - Ontario, CA
Elliot G. Pitt - Ontario, CA

Chemical Research & Licensing Company - Houston TX

C07C 256
C07C 258

585720

Paraffin alkylation using solid, particulate catalyst is carried out by preparing an alkane-catalyst mixture in a wash zone, passing the alkane-catalyst mixture to a plug flow reactor where a minor amount of olefin is introduced to contact the alkane-catalyst mixture and react to form alkylate and the alkane-catalyst-alkylate mixture is passed through the reactor with a minimum of back mixing to restrict the reaction of alkylate with olefin, thus substantially preventing polymerization. The alkane-catalyst-alkylate mixture, substantially free of olefin is passed to a disengaging zone where the liquid is removed and the solid particulate catalyst is recovered and returned to the wash zone for recycle. The alkane is present in the reactor in sufficient molar excess to react substantially all of the olefin. Any unreacted isoalkane is recycled to the reactor with make-up isoalkane added to maintain the molar excess.

51909049, Mar 2, 1993

Nov 12, 1991

7/791106

Clifford S. Crossland - Houston TX
Alan Johnson - Ontario, CA
John Woods - Ontario, CA
Elliot G. Pitt - Ontario, CA

Chemical Research & Licensing Company - Pasadena TX

B01J 2904
B01J 2108
B01J 2706

502 85

Paraffin alkylation using solid, particulate catalyst is carried out by preparing an alkane-catalyst mixture in a wash zone, passing the alkane-catalyst mixture to a plug flow reactor where a minor amount of olefin is introduced to contact the alkane-catalyst mixture and react to form alkylate and the alkane-catalyst-alkylate mixture is passed through the reactor with a minimum of back mixing to restrict the reaction of alkylate with olefin, thus substantially preventing polymerization. The alkane-catalyst-alkylate mixture, substantially free of olefin is passed to a disengaging zone where the liquid is removed and the solid particulate catalyst is recovered and returned to the wash zone for recycle. The alkane is present in the reactor in sufficient molar excess to react substantially all of the olefin. Any unreacted isoalkane is recycled to the reactor with make-up isoalkane added to maintain the molar excess.

57308438, Mar 24, 1998

Dec 29, 1995

8/580822

Willibrord A. Groten - Pasadena TX
Derwyn Booker - Pasadena TX
Clifford S. Crossland - Pasadena TX

Chemical Research & Licensing Company - Pasadena TX

B01D 314

202158

A contact structure, useful as a distillation structure, has a rigid frame made of two substantially vertical duplicate grids spaced apart and held rigid by a plurality of substantially horizontal rigid members and a plurality of substantially horizontal wire mesh tubes mounted to the grids to form a plurality of fluid pathways among the tubes. For use as a catalytic distillation structure, which serves as both the distillation structure and the catalyst, at least a portion of the wire mesh tubes contain a particulate catalytic material. The catalyst within the tubes provides a reaction zone where catalytic reactions may occur and the wire mesh provides mass transfer surfaces to effect a fractional distillation. The spacing elements provide for a variation of the catalyst density and loading and structural integrity.

54318904, Jul 11, 1995

Jan 31, 1994

8/188803

Clifford S. Crossland - Houston TX
Gary R. Gildert - Houston TX
Dennis Hearn - Houston TX

Chemical Research & Licensing Company - Pasadena TX

B01J 802
B01J 806
B01J 3502

422211

A bale shaped catalytic distillation structure formed by placing multiple link or continuous tube shaped structures on top of a wire mesh screen, such as demister wire, arrayed at an angle to the longitudinal axis of the bale, such that when the wire mesh screen is rolled up, the rolled structure provides a catalytic distillation structure. The tube comprises flexible, semi-rigid open mesh tubular element filled with a particulate catalytic material, the tube shaped structure having a fastener every 1-12 inches in length to form a multiple link.