Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – From nonhydrocarbon feed
Patent
1998-02-09
1999-11-23
Wood, Elizabeth D
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
From nonhydrocarbon feed
585314, 585315, 585324, 585664, 585638, 585639, 585643, 585644, 585645, 585646, 585647, C07C 120, C07C 200, C07C 523
Patent
active
059903694
ABSTRACT:
The present invention relates to a process for the production of light olefins comprising olefins having from 2 to 4 carbon atoms per molecule from an oxygenate feedstock. The process comprises passing the oxygenate feedstock to an oxygenate conversion zone containing a metal alumninophosphate catalyst to produce a light olefin stream. The light olefin stream is fractionated and a portion of the products are metathesized to enhance the yield of the ethylene, propylene, and/or butylene products. Propylene can be metathesized to produce more ethylene, or a combination of ethylene and butene can be metathesized to produce more propylene. This combination of light olefin production and metathesis, or disproportionation provides flexibility to overcome the equilibrium limitations of the metal aluminophosphate catalyst in the oxygenate conversion zone. In addition, the invention provides the advantage of extended catalyst life and greater catalyst stability in the oxygenate conversion zone.
REFERENCES:
patent: 3723562 (1973-03-01), Heckelsberg
patent: 3928483 (1975-12-01), Chang et al.
patent: 4025575 (1977-05-01), Chang et al.
patent: 4052479 (1977-10-01), Chang et al.
patent: 4252479 (1981-02-01), Scherfenberg
patent: 4447669 (1984-05-01), Hamon et al.
patent: 4496786 (1985-01-01), Santilli et al.
patent: 4499314 (1985-02-01), Seddon et al.
patent: 4547616 (1985-10-01), Avidan et al.
patent: 4590174 (1986-05-01), Kukes et al.
patent: 4677242 (1987-06-01), Kaiser
patent: 4677243 (1987-06-01), Kaiser
patent: 4843183 (1989-06-01), Inui
patent: 4861938 (1989-08-01), Lewis et al.
patent: 4973792 (1990-11-01), Lewis et al.
patent: 5026935 (1991-06-01), Leyshon et al.
patent: 5026936 (1991-06-01), Leyshon et al.
patent: 5095163 (1992-03-01), Barger
patent: 5126308 (1992-06-01), Barger et al.
patent: 5132484 (1992-07-01), Gajda
patent: 5191141 (1993-03-01), Barger et al.
Peters et al., Plant Design and Economics For Chemical Engineers, Third Edition, pp. 6-7 No month vailable, 1980.
Inui, T., "Structure-Reactivity Relationships in Methanol to Olefin Conversion on Various Microporous Crystalline Catalysts," Grasseli, R.K. and Sleight A.W., Eds. of Structure-Activity and Selectivity Relationships in Heterogeneous Catalysis, (Amsterdam, Elsevier Science Publishers B.V., 1991) pp. 233-242. no month available.
Barger Paul T.
Lawson R. Joe
Vora Bipin V.
McBride Thomas K.
Silverman Richard P.
Tolomei John G.
UOP LLC
Wood Elizabeth D
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