Etherification--hydrogenation process

Details Etherification--hydrogenation process Etherification--hydrogenation process

1996-02-12

1997-05-13

Bhat, Nina

Distillation: processes, separatory

With chemical reaction

Including step of adding catalyst or reacting material

203 45, 203 56, 203 87, 203DIG6, 422193, 568694, 568697, 585468, B01D 334, B01J 800

Patent

active

056288808

ABSTRACT:
A process for removing dienes from etherification uses a hydrogenation zone in the reactor distillation column above the etherification zone. MTBE is produced and the unreacted C.sub.4 stream is also subjected to selective hydrogenation of the butadiene contained in the C.sub.4 feed stream. The C.sub.4 stream is first contacted with methanol in the etherification zone where the MTBE is distilled downward. The unreacted C.sub.4 's then are subjected to selective hydrogenation in the hydrogenation zone where butadiene in the overhead raffinate is reduced by over 90%. The hydrotreated C.sub.4 's are thus suitable for cold acid alkylation or other use wherein butadiene is harmful.

REFERENCES:
patent: 4218011 (1980-08-01), Smith, Jr.
patent: 4221653 (1980-09-01), Chervenak et al.
patent: 4232177 (1980-11-01), Smith, Jr.
patent: 4302350 (1981-11-01), Smith, Jr.
patent: 4307254 (1981-12-01), Smith, Jr.
patent: 4361422 (1982-11-01), Derrien et al.
patent: 4490481 (1984-12-01), Boitiaux et al.
patent: 4504687 (1985-03-01), Jones, Jr.
patent: 4533779 (1985-08-01), Boitiaux et al.
patent: 4550012 (1985-10-01), Penick
patent: 4724274 (1988-02-01), Boitiaux et al.
patent: 4740633 (1988-04-01), Boitiaux et al.
patent: 4774375 (1988-09-01), Hammershaimb
patent: 4925989 (1990-05-01), Hagan et al.
patent: 4978807 (1990-12-01), Smith, Jr.
patent: 5073236 (1991-12-01), Gelbein et al.
patent: 5118873 (1992-06-01), Smith, Jr.
patent: 5120403 (1992-06-01), Smith, Jr.
patent: 5248836 (1993-09-01), Bakshi et al.
patent: 5248837 (1993-09-01), Smith, Jr. et al.
patent: 5313005 (1994-05-01), Smith, Jr. et al.
patent: 5431888 (1995-07-01), Hickey et al.
patent: 5510568 (1996-04-01), Hearn
Boitiaux, et al, "Newest Hydrogenation Catalyst", Hydrocarbon Processing, Mar. 1985, pp. 51-59.
Derriou, et al "The IFP Selective Hydrogenation Process", Chemical Engineering Progress, Jan. 1974, pp. 74-80.
Cameron, et al "New Processes for Upgrading C4 and C5 Olefins Stream", Refining Symposium at Progue Czech Rep., Aug. 1994.
Barchas, et al "Combine Selective Hydrogenation and Distillation to Upgrade C.sub.4 and C.sub.5 Streams", Fuel Reformation, Sep./Oct. 1993 pp. 44-52.

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