EP0026041A1
Expired / Lapsed
EP
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A method for producing olefins and/or ethers of high octane number
Assignee: Mobil Oil AS
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Filing: 1980-08-12
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Granted: —
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Expires: 2000-08-12
Abstract
Abstract A wide olefinic C 2 to C 10 stream is restructured over a special zeolite catalyst to form primarily C 4 to C 7 olefins,the C. to C 7 isoolefins are reacted with methanol over an acid catalyst to form high octane ethers, and unreacted olefins and methanol separated from the ether product are recycled to the olefin restructuring operation.
Inventors
- 👤 William Everett Garwood
- 👤 Hans-Juergen Schoennagel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 22:41
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; C07; C07C; C07C41/00; C07C41/01; C07C41/05; C07C41/06; C07C6/00; C07C6/02; C07C6/04; C07C2529/00; C07C2529/04; C07C2529/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
103 words
A method for producing gasoline boiling range high octane products from a mixture of olefins comprising up to Ci 0 olefins which comprises, contacting a mixed olefin feed with an acid crystalline zeolite catalyst characterized by a pore opening of at least 5 Angstroms, a silica to alumina ratio of at least 12 and a constraint index within the range of 1 to 12 at an olefin pressure below .0 . 5 atmosphere and a temperature selected from within the range of 400°F (204°C) to 600°F (316°C), and recovering an olefinic product enriched with C 4 and C 5 olefins comprising olefin isomers.
Claim 2
Independent Claim
103 words
A method for producing gasoline boiling range high octane products from a mixture of olefins comprising up to Ci 0 olefins which comprises, contacting a mixed olefin feed with an acid crystalline zeolite catalyst characterized by a pore opening of at least 5 Angstroms, a silica to alumina ratio of at least 12 and a constraint index within the range of 1 to 12 at an olefin pressure below .0 . 5 atmosphere and a temperature selected from within the range of 400°F (204°C) to 600°F (316°C), and recovering an olefinic product enriched with C 4 and C 5 olefins comprising olefin isomers.
Claim 3
Dependent Claim
51 words
The method of Claim 1 wherein the olefin feed is contacted with said crystalline zeolite at a temperature within the range of 500°F (260°C) to 500°F (288°C) at an olefin pressure not above 0.3 atmosphere and sufficient to obtain 95% conversion to a higher octane product comprising less than 2% aromatics.
Claim 4
Dependent Claim
36 words
The method of Claim 1 wherein a diluent material substantially inert to the restructuring of the olefins charged is employed with said olefin feed to maintain the partial pressure of the olefin feed below 0.5 atmosphere.
Claim 5
Dependent Claim
20 words
The method of Claim 1 wherein the olefin feed comprises a mixture of C 2 to C 10 carbon compounds.
Claim 6
Dependent Claim
20 words
The method of Claim 1 wherein the olefin feed is mixed with one or more of hydrogen, propane and nitrogen.
Claim 7
Dependent Claim
30 words
The method of Claim 1 wherein the olefinic product comprises isobutylene and isopentenes which materials are reacted with an alcohol by.contact with an acidic catalyst to form high octane ethers.
Claim 8
Independent Claim
167 words
A method for producing high octane ether products comprising tertiary amyl methyl ether and methyl tertiary butyl ether from a C 2 to C 10 olefin feed mixture which comprises, reacting the C 2 to C 10 olefin feed under temperature and pressure conditions in the presence of an acid zeolite catalyst providing a pore opening of at least 5 Angstroms, a silica-alumina ratio of at least 12 and a constraint index within the range of 1 to 12 to form an olefin product richer in C 4 and C 5 olefins and comprising olefin isomers of isobutylene and isopentenes, reacting at least the olefin isomers with a lower alcohol in the presence of an acid catalyst under temperature and pressure conditions promoting the formation of the high octane ethers above identified, separating the formed ethers from unreacted C 4 minus olefins and alcohol and recovering the separated ethers, and recycling the separated C 4 minus olefins and alcohol for contact with the zeolite catalyst above identified.
Claim 9
Independent Claim
167 words
A method for producing high octane ether products comprising tertiary amyl methyl ether and methyl tertiary butyl ether from a C 2 to C 10 olefin feed mixture which comprises, reacting the C 2 to C 10 olefin feed under temperature and pressure conditions in the presence of an acid zeolite catalyst providing a pore opening of at least 5 Angstroms, a silica-alumina ratio of at least 12 and a constraint index within the range of 1 to 12 to form an olefin product richer in C 4 and C 5 olefins and comprising olefin isomers of isobutylene and isopentenes, reacting at least the olefin isomers with a lower alcohol in the presence of an acid catalyst under temperature and pressure conditions promoting the formation of the high octane ethers above identified, separating the formed ethers from unreacted C 4 minus olefins and alcohol and recovering the separated ethers, and recycling the separated C 4 minus olefins and alcohol for contact with the zeolite catalyst above identified.
Claim 10
Dependent Claim
16 words
The method of Claim 7 wherein C 5 plus olefins are recovered with the ether product.
Claim 11
Dependent Claim
26 words
The method of Claim 7 wherein olefins boiling below C 6 olefins are separated from the ether product and recycled to the zeolite catalyst conversion step.
Claim 12
Dependent Claim
26 words
The method of Claim 7 wherein the formation of ethers from C 4 and C5 olefin isomers is accomplished with methanol and an acidic resin catalyst.
Claim 13
Dependent Claim
69 words
The method of Claim 7 wherein the olefin product of the zeolite catalyst conversion operation is separated to recover particularly C 4 to C 7 olefins which are thereafter reacted with methanol in the presence of a solid acidic catalyst to form the ether products desired and unreacted olefins are separated from the ether product to provide separate streams thereof for use in blending to form desired gasoline product.
Claim 14
Independent Claim
148 words
A method for producing high octane ethers and olefins from a mixture of C 2 to C 10 olefins which comprises, converting the C 2 to C 10 olefins in the presence of a special zeolite catalyst by olefination thereof to a product enriched in C 4 to C 7 olefins, reacting the C 4 to C 7 olefins thus produced with methanol and in the presence of an acid catalyst to form ethers of isobutylene and isopentenes, separating the ether product and'C 6 plus olefins from unreacted C 5 minus olefins and methanol, and recycling the C 5 minus olefins with methanol to the special zeolite catalyst olefination operation, said special zeolite catalyst comprising a crystalline zeolite characterized by a pore opening of at least 5 Anstroms, a silica to alumina ratio of at least 12 and a constraint index within the range of 1 to 12.
Claim 15
Independent Claim
148 words
A method for producing high octane ethers and olefins from a mixture of C 2 to C 10 olefins which comprises, converting the C 2 to C 10 olefins in the presence of a special zeolite catalyst by olefination thereof to a product enriched in C 4 to C 7 olefins, reacting the C 4 to C 7 olefins thus produced with methanol and in the presence of an acid catalyst to form ethers of isobutylene and isopentenes, separating the ether product and'C 6 plus olefins from unreacted C 5 minus olefins and methanol, and recycling the C 5 minus olefins with methanol to the special zeolite catalyst olefination operation, said special zeolite catalyst comprising a crystalline zeolite characterized by a pore opening of at least 5 Anstroms, a silica to alumina ratio of at least 12 and a constraint index within the range of 1 to 12.
References Cited (Backward Citations)
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