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US 10,519,078 B2Granted
Methods of producing ethylene and propylene
AssigneeLyondell Chemical Technology, L.P.
InventorLinn Fang
Life of this patent
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Abstract
Methods of producing propylene and/or ethylene. The methods can include contacting a mixture of C4+ compounds with a catalyst, such as a fixed bed catalyst, that includes a phosphorus treated zeolite. The mixture of C4+ compounds can include a plurality of C4 olefins, a plurality of C5 olefins, and/or a plurality of C6+ olefins.
Claims20
A method of producing at least one of ethylene and propylene, the method comprising:
- providing a first mixture of C4+ compounds comprising a plurality of C4+ olefins in an amount of at least 30% by weight of the first mixture of C4+ compounds;
- and
- contacting the first mixture of C4+ compounds with a catalyst comprising:
- (a) a phosphorus treated zeolite, wherein the phosphorus treated zeolite comprises an alkali metal, and wherein the alkali metal is present in an amount no greater than about 0.5% by weight of the phosphorus treated zeolite, and
- (b) a binder, wherein the binder comprises bentonite, silica and kaolin, and wherein the bentonite, silica and kaolin are present in the binder at a bentonite:silica:kaolin weight ratio of about 1:8-16:20-28,
- to convert at least a portion of the first mixture of C4+ compounds to at least one of ethylene and propylene, thereby producing a first effluent comprising at least one of ethylene and propylene;
- wherein at least 15% by weight of the plurality of C4+ olefins is converted to at least one of ethylene and propylene.
4 more elements
A method of producing at least one of ethylene and propylene, the method comprising:
- contacting a tailstream of a methanol-to-olefin process with a catalyst comprising:
- (a) a phosphorus treated zeolite, wherein the phosphorus treated zeolite comprises an alkali metal, and wherein the alkali metal is present in an amount no greater than about 0.5% by weight of the phosphorus treated zeolite, and
- (b) a binder, wherein the binder comprises bentonite, silica and kaolin, wherein the bentonite, silica and kaolin are present in the binder in a bentonite:silica:kaolin weight ratio of about 1:8-16:20-28,
- thereby producing an effluent comprising at least one of ethylene and propylene,
- wherein the tailstream comprises a plurality of C4+ compounds, and the catalyst converts at least a portion of the plurality of C4+ compounds to at least one of ethylene and propylene.
2 more elements
A method of producing at least one of ethylene and propylene, the method comprising:
- providing a first mixture of C4+ compounds comprising a first plurality of C4+ olefins in an amount of at least 30% by weight of the first mixture of C4+ compounds;
- and
- contacting the first mixture of C4+ compounds with a catalyst comprising:
- (a) a phosphorus treated zeolite, wherein the phosphorus treated zeolite comprises an alkali metal, and wherein the alkali metal is present in an amount no greater than about 0.5% by weight of the phosphorus treated zeolite, and
- (b) a binder, wherein the binder comprises bentonite, silica and kaolin, wherein the bentonite, silica and kaolin are present in the binder at a bentonite:silica:kaolin weight ratio of about 1:8-16:20-28,
- to convert the first mixture to a reactor effluent comprising a second plurality of C4+ olefins and at least one of ethylene and propylene, wherein at least 15% by weight of the first plurality of C4+ olefins of the first mixture is converted to at least one of ethylene and propylene;
- and
- contacting the reactor effluent with the catalyst to convert at least a portion of the second plurality of C4+ olefins to at least one of ethylene and propylene.
5 more elements
Dependencies are inferred from the claim text.