Conversion process
View Patent ↗The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalyst composition, wherein the feedstock is free of or substantially free of metal salts.
1. A process for converting a feedstock into one or more olefin(s), the process comprising the steps of
(a) providing a feedstock comprising one or more oxygenates and having greater than 10,000 ppm of a Group IA metal salt and/or a Group IIA metal salt;
(b) removing an amount of the Group IA metal salt and/or Group IIA metal salt to a level less than 50 ppm to form a treated feedstock;
(c) introducing the treated feedstock into a reactor;
(d) providing a molecular sieve catalyst composition in the reactor to convert the treated feedstock into one or more olefin(s); and
(e) withdrawing an effluent stream comprising the one or more olefin(s) from the reactor.
2. The process of claim 1 wherein the Group IA metal salt and/or Group IIA metal salt in step (b) is removed by boiling the feedstock.
3. The process of claim 1 wherein the treated feedstock comprises less than 30 ppm of a Group IA metal salt and/or a Group JIA metal salt.
4. The process of claim 1 wherein the treated feedstock comprises less than 20 ppm of a Group IA metal salt and/or a Group IIA metal salt.
5. The process of claim 1 wherein the treated feedstock comprises less than 10 ppm of a Group IA metal salt and/or a Group IIA metal salt.
6. The process of claim 1 wherein the effluent stream is being remove at a rate greater than 10,000 Kg/day.
7. The process of claim 1 wherein the reactor is a fluidized bed reactor.
8. The process of claim 1 wherein the effluent stream comprises greater than 10,000 Kg of olefin(s) per kg of the total effluent stream.
9. The process of claim 1 wherein the treated feedstock is introduced into the reactor at a rate of greater than 1,000 Kg/hour.
10. The process of claim 1 wherein the treated feedstock is introduced into the reactor at a rate of greater than 10,000 Kg/hour.
11. A process for converting a feedstock comprising an oxygenate into at least one or more olefin(s), the process comprising the steps of:
(a) removing an amount of a Group IA metal salt and/or Group IIA metal salt to a level less than 50 ppm from the feedstock to form a treated feedstock;
(b) introducing the treated feedstock to a reactor system in the presence of a molecular sieve catalyst composition comprising a molecular sieve;
(c) withdrawing from the reactor system an effluent stream;
(d) passing the effluent stream through a recovery system; and
(e) recovering at least one or more olefin(s) in amount greater than 1,000 Kg/day.
12. The process of claim 11 wherein the effluent steam is withdrawn at a rate greater than 1,000 Kg/hour.
13. The process of claim 11 wherein the feedstock is introduced to the reactor at a rate greater than 1,000 Kg/hour.
14. The process of claim 11 wherein the process is producing greater than 10,000 Kg per day of the one or more olefin(s).
15. The process of claim 11 wherein the amount of a Group IA metal salt and/or Group IIA metal salt based on the molecular sieve is less than 30 ppm.
16. The process of claim 11 wherein the amount of a Group IA metal salt and/or Group IIA metal salt based on the molecular sieve is less than 20 ppm.
17. The process of claim 11 wherein the amount of a Group IA metal salt and/or Group IIA metal salt based on the molecular sieve is less than 10 ppm.
18. The process of claim 11 wherein the oxygenate comprises methanol.