Hydrocarbon Conversion

摘要

The invention relates to the conversion of light hydrocarbon to higher-value hydrocarbon, such as aromatic hydrocarbon, to equipment and materials useful in such conversion, and to the use of such conversion for, e.g., natural gas upgrading. The conversion can be carried out in two stages, with each stage containing a dehydrocyclization catalyst comprising at least one dehydrogenation component and at least one molecular sieve.

主权项

1. A hydrocarbon conversion process, comprising:
(a) providing a feed comprising ≧1 wt. % of non-aromatic hydrocarbon, (b) providing first and second catalysts, wherein (i) the first catalyst comprises ≧10 wt. % of a first molecular sieve component and ≧0.005 wt. % of a first dehydrogenation component and (ii) the second catalyst comprises ≧10 wt. % of a second molecular sieve component and ≧0.005 wt. % of a second dehydrogenation component; (c) contacting the feed with the first catalyst under catalytic dehydrocyclization conditions including a temperature T1 in the range of from 400° C. to 630° C. to produce a first product comprising ≧1 wt. % aromatic hydrocarbon; and (d) contacting ≧50 wt. % of the first product, including ≧50 wt. % of the first product's aromatic hydrocarbon, with the second catalyst under catalytic dehydrocyclization conditions including a temperature T2 in the range of from 450° C. to 700° C., to produce a second product comprising ≧1 wt. % of additional aromatic hydrocarbon, wherein T1≦0.9·T2.