Claims
- 1. A process for converting methanol to light olefins, the process comprising the steps of:
(a) providing a feedstock comprising methanol and a contaminant selected from the group consisting of: soot, rust, SOx, carbonic acid, and C5-hydrocarbons; and (b) contacting the methanol with a catalyst in a reactor under conditions effective to convert at least a portion of the methanol to the light olefins; wherein the feedstock does not pass specification for Grade A methanol.
- 2. The process of claim 1, wherein the contaminant is soot.
- 3. The process of claim 2, wherein the feedstock does not pass test ASTM D-1209 for Grade A methanol.
- 4. The process of claim 1, wherein the contaminant is rust.
- 5. The process of claim 4, wherein the feedstock does not pass test ASTM D-1363 at 30 minutes and 68° F. for Grade A methanol.
- 6. The process of claim 4, wherein the feedstock does not pass test ASTM D-1613 for Grade A methanol.
- 7. The process of claim 4, wherein the feedstock does not pass test ASTM E-346 for Grade A methanol.
- 8. The process of claim 1, wherein the contaminant is carbonic acid.
- 9. The process of claim 8, wherein the feedstock does not pass test ASTM D-1363 at 30 minutes and 68° F. for Grade A methanol.
- 10. The process of claim 1, wherein the contaminant is SOx.
- 11. The process of claim 10, wherein the feedstock does not pass test ASTM D-3961 for Grade A methanol.
- 12. The process of claim 1, wherein the contaminant is C5-hydrocarbons.
- 13. The process of claim 12, wherein the feedstock does not pass test ASTM D-1722 for Grade A methanol.
- 14. The process of claim 1, wherein the feedstock does not pass test ASTM D1209 for Grade A methanol.
- 15. The process of claim 1, wherein the feedstock does not pass test ASTM D-1363 at 30 minutes and 68° F. for Grade A methanol.
- 16. The process of claim 1, wherein the feedstock does not pass test ASTM D-1722 for Grade A methanol.
- 17. The process of claim 1, wherein the feedstock does not pass the clarity test for Grade A methanol.
- 18. The process of claim 1, wherein the feedstock does not pass ASTM E-346 for Grade A methanol.
- 19. The process of claim 1, wherein the feedstock does not pass ASTM D-1613 for Grade A methanol.
- 20. The process of claim 1, wherein the feedstock does not pass ASTM D-3961 for Grade A methanol.
- 21. The process of claim 1, wherein the process further comprises the step of:
(c) receiving the feedstock from a tanker which previously carried a non-methanol material.
- 22. The process of claim 21, wherein the non-methanol material comprises crude oil.
- 23. The process of claim 21, wherein the non-methanol material comprises naphtha.
- 24. The process of claim 21, wherein the tanker comprises a blanketing system for delivering a blanketing medium to one or more holds.
- 25. The process of claim 24, wherein the blanketing medium comprises exhaust from a fuel burning engine.
- 26. The process of claim 25, wherein the blanketing medium comprises exhaust from a kerosene burning engine.
- 27. The process of claim 25, wherein the blanketing medium comprises exhaust from a diesel burning engine.
- 28. The process of claim 25, wherein the blanketing medium comprises exhaust from a methanol burning engine.
- 29. The process of claim 24, wherein the blanketing medium comprises nitrogen.
- 30. The process of claim 24, wherein the blanketing medium comprises carbon dioxide.
- 31. The process of claim 1, wherein the process further comprises the step of:
(c) receiving the methanol from a tanker which was designed to carry a non-methanol material.
- 32. The process of claim 31, wherein the non-methanol material comprises crude oil.
- 33. The process of claim 31, wherein the non-methanol material comprises naphtha.
- 34. A process for forming light olefins, the process comprising the steps of:
(a) providing a feedstock comprising liquid methanol and a contaminant selected from the group consisting of SOx, carbonic acid, and C5-hydrocarbons; (b) vaporizing at least a portion of the feedstock to form a vaporized feed stream, wherein the vaporized feed stream comprises vaporized methanol and at least a portion of the contaminant that was present in the feedstock; and (c) contacting the vaporized methanol with a catalyst in a reactor under conditions effective to convert at least a portion of the vaporized methanol to the light olefins.
- 35. The process of claim 34, wherein the at least a portion of the contaminant comprises at least 0.001 weight percent of the vaporized feed stream, based on the total weight of the vaporized feed stream.
- 36. The process of claim 35, wherein the at least a portion of the contaminant comprises at least 0.01 weight percent of the vaporized feed stream, based on the total weight of the vaporized feed stream.
- 37. The process of claim 36, wherein the at least a portion of the contaminant comprises at least 0.05 weight percent of the vaporized feed stream, based on the total weight of the vaporized feed stream.
- 38. The process of claim 34, wherein the contaminant is carbonic acid.
- 39. The process of claim 38, wherein the feedstock does not pass test ASTM D-1363 at 30 minutes and 68° F. for Grade A methanol.
- 40. The process of claim 34, wherein the contaminant is SOx.
- 41. The process of claim 40, wherein the feedstock does not pass test ASTM D-3961 for Grade A methanol.
- 42. The process of claim 34, wherein the contaminant is C5-hydrocarbons.
- 43. The process of claim 42, wherein the feedstock does not pass test ASTM D-1722 for Grade A methanol.
- 44. The process of claim 34, wherein the feedstock does not pass test ASTM D11209 for Grade A methanol.
- 45. The process of claim 34, wherein the feedstock does not pass test ASTM D-1363 at 30 minutes and 68° F. for Grade A methanol.
- 46. The process of claim 34, wherein the feedstock does not pass test ASTM D-1722 for Grade A methanol.
- 47. The process of claim 34, wherein the feedstock does not pass the clarity test for Grade A methanol.
- 48. The process of claim 34, wherein the feedstock does not pass ASTM E-346 for Grade A methanol.
- 49. The process of claim 34, wherein the feedstock does not pass ASTM D-1613 for Grade A methanol.
- 50. The process of claim 34, wherein the feedstock does not pass ASTM D-3961 for Grade A methanol.
- 51. The process of claim 34, wherein the process further comprises the step of:
(d) receiving the feedstock from a tanker that previously carried a non-methanol material.
- 52. The process of claim 51, wherein the non-methanol material comprises crude oil.
- 53. The process of claim 51, wherein the non-methanol material comprises naphtha.
- 54. The process of claim 51, wherein the tanker comprises a blanketing system for delivering a blanketing medium to one or more holds.
- 55. The process of claim 54, wherein the blanketing medium comprises exhaust from a fuel burning engine.
- 56. The process of claim 55, wherein the blanketing medium comprises exhaust from a diesel burning engine.
- 57. The process of claim 55, wherein the blanketing medium comprises exhaust from a kerosene burning engine.
- 58. The process of claim 55, wherein the blanketing medium comprises exhaust from a methanol burning engine.
- 59. The process of claim 54, wherein the blanketing medium comprises nitrogen.
- 60. The process of claim 54, wherein the blanketing medium comprises carbon dioxide.
- 61. The process of claim 34, wherein the process further comprises the step of:
(d) receiving the methanol from a tanker that was designed to carry a non-methanol material.
- 62. The process of claim 61, wherein the non-methanol material comprises crude oil.
- 63. The process of claim 61, wherein the non-methanol material comprises naphtha.
- 64. A process for forming light olefins, the process comprising the steps of:
(a) providing a feedstock comprising liquid methanol and a contaminant selected from the group consisting of soot and rust; (b) vaporizing at least a portion of the feedstock to form a vaporized feed stream and a blowdown stream, wherein the vaporized feed stream comprises vaporized methanol, and wherein the blowdown stream comprises at least a portion of the contaminant that was present in the feedstock; and (c) contacting the vaporized methanol with a catalyst in a reactor under conditions effective to convert at least a portion of the vaporized methanol to the light olefins.
- 65. The process of claim 64, wherein the contaminant is soot.
- 66. The process of claim 65, wherein the feedstock does not pass test ASTM D-1209 for Grade A methanol.
- 67. The process of claim 64, wherein the contaminant is rust.
- 68. The process of claim 67, wherein the feedstock does not pass test ASTM D-1363 at 30 minutes and 68° F. for Grade A methanol.
- 69. The process of claim 67, wherein the feedstock does not pass test ASTM D-1613 for Grade A methanol.
- 70. The process of claim 67, wherein the feedstock does not pass test ASTM E-346 for Grade A methanol.
- 71. The process of claim 64, wherein the feedstock does not pass test ASTM D-1363 at 30 minutes and 68° F. for Grade A methanol.
- 72. The process of claim 64, wherein the feedstock does not pass test ASTM D-1722 for Grade A methanol.
- 73. The process of claim 64, wherein the feedstock does not pass the clarity test for Grade A methanol.
- 74. The process of claim 64, wherein the feedstock does not pass ASTM E-346 for Grade A methanol.
- 75. The process of claim 64, wherein the feedstock does not pass ASTM D-1613 for Grade A methanol.
- 76. The process of claim 64, wherein the feedstock does not pass ASTM D-3961 for Grade A methanol.
- 77. The process of claim 64, wherein the process further comprises the step of:
(d) receiving the feedstock from a tanker that previously carried a non-methanol material.
- 78. The process of claim 77, wherein the non-methanol material comprises crude oil.
- 79. The process of claim 77, wherein the non-methanol material comprises naphtha.
- 80. The process of claim 77, wherein the tanker comprises a blanketing system for delivering a blanketing medium to one or more holds.
- 81. The process of claim 80, wherein the blanketing medium comprises exhaust from a fuel burning engine.
- 82. The process of claim 81, wherein the blanketing medium comprises exhaust from a diesel burning engine.
- 83. The process of claim 81, wherein the blanketing medium comprises exhaust from a kerosene burning engine.
- 84. The process of claim 81, wherein the blanketing medium comprises exhaust from a methanol burning engine.
- 85. The process of claim 80, wherein the blanketing medium comprises nitrogen.
- 86. The process of claim 80, wherein the blanketing medium comprises carbon dioxide.
- 87. The process of claim 64, wherein the process further comprises the step of:
(d) receiving the methanol from a tanker that was designed to carry a non-methanol material.
- 88. The process of claim 87, wherein the non-methanol material comprises crude oil.
- 89. The process of claim 87, wherein the non-methanol material comprises naphtha.
- 90. A process for providing methanol to an MTO reactor system, the process comprising the steps of:
(a) providing a methanol-containing stream comprising liquid methanol and solid contaminants, wherein the methanol-containing stream does not pass specification for Grade A methanol; (b) subjecting the methanol-containing stream to conditions effective to form a vaporized feed stream and a substantially liquid blowdown stream, wherein the vaporized feed stream comprises vaporized methanol, and the liquid blowdown stream comprises the solid contaminants; and (c) contacting the vaporized methanol with a catalyst under conditions effective to convert at least a portion of the vaporized methanol to light olefins.
- 91. The process of claim 90, wherein the solid contaminant is soot.
- 92. The process of claim 90, wherein the solid contaminant is rust.
- 93. The process of claim 90, wherein the methanol-containing stream does not pass specification for Grade AA methanol.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] The present application claims the benefit of U.S. Provisional Application No. 60/437,698 filed Dec. 31, 2002, the entire content of which is incorporated herein by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60437698 |
Dec 2002 |
US |