| 主权项 |
1. A process for converting alkane, the process comprising
a. providing a first reactant and a first oxidant, wherein the first reactant comprises ≧10.0% (molar basis) of a first alkane, wherein the first oxidant comprises molecular oxygen obtained from air and the first reactant comprises ≧99.0% (molar basis) of C2+ alkane; b. providing a second reactant and a second oxidant, wherein the second reactant comprises ≧10.0% (molar basis) of a second alkane, wherein the second oxidant comprises molecular oxygen obtained from air and the second reactant comprises ≧99.0% (molar basis) of C2+ alkane; c. providing a reverse-flow reactor comprising a heated first thermal mass, a second thermal mass, and at least one hydrocarbon conversion catalyst, wherein (i) the first thermal mass comprises ≧50.0 wt. % of a first sorbent, based on total weight of the first thermal mass, and/or the second thermal mass comprises ≧50.0 wt. % of a second sorbent, based on total weight of the second thermal mass and (ii) the hydrocarbon conversion catalyst comprises ≧90.0 wt. % of at least one oxydehydrogenation catalyst; d. during a first time interval, i. passing the first reactant and the first oxidant to the reverse-flow reactor; ii. transferring heat from the heated first thermal mass to at least one of the first reactant or first oxidant and combining the first reactant and first oxidant to produce a first mixture, the first mixture has a C2+ alkane: molecular oxygen molar ratio in the range of 10.0 to 20.0; iii. catalytically transferring hydrogen from the first alkane to the first oxidant at a temperature range of 650° C. to 900° C. in the presence of the hydrocarbon conversion catalyst to produce a third mixture, the third mixture comprising (A) C2+ olefin produced by the catalytic transfer and (B) any unconverted first mixture; iv. transferring heat from the third mixture to the second thermal mass; v. conducting at least a portion of the third mixture away from the reverse flow-reactor; vi. lessening or discontinuing the passing of the first mixture to the reverse-flow reactor; and e. during a second time interval, i. passing the second reactant and second oxidant to the reverse-flow reactor; ii. transferring heat from the heated second thermal mass to at least one of the second reactant or second oxidant and combining the second reactant and second oxidant to produce a second mixture, wherein the second mixture has a C2+ alkane:molecular oxygen molar ratio in the range of 10.0 to 20.0; iii. catalytically transferring hydrogen from at least a portion of the second alkane to the second oxidant at a temperature range of 650° C. to 900° C. in the presence of the hydrocarbon conversion catalyst to produce a fourth mixture, the fourth mixture comprising (A) C2+ olefin produced by the catalytic transfer and (B) any unreacted second mixture; iv. transferring heat from the fourth mixture to the first thermal mass to re-heat the first thermal mass; v. conducting at least a portion of the fourth mixture away from the reverse flow-reactor; and vi. lessening or discontinuing the passing of the second mixture to the reverse-flow reactor. |
