Enhancing the production of higher molecular weight hydrocarbons from lower molecular weight hydrocarbons by the additions of aluminum vapor to the feed
AssigneeChevron Research Company
InventorsLouis Devries, P. R. Ryason
Life of this patent
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Abstract
In a continuous catalytic process for the production of higher molecular weight hydrocarbons from lower molecular weight hydrocarbons in which a lower molecular weight hydrocarbon containing reaction gas is contacted in a reaction zone with a higher molecular weight hydrocarbon synthesis catalyst under C.sub.2 + hydrocarbon synthesis conditions, the improvement comprising increasing the production of higher molecular weight hydrocarbons by the addition of an effective amount of aluminum metal vapor to the reaction gas, said synthesis conditions including a temperature greater than 1000.degree. C. and a gas hourly space velocity of greater than 3200 hr.sup.-1.
Claims22
In a continuous catalyst process for the production of higher molecular weight hydrocarbons from lower molecular weight hydrocarbons in which a lower molecular weight hydrocarbon containing reaction gas is contacted in a reaction zone with a higher molecular weight hydrocarbon synthesis catalyst under C.sub.2 + hydrocarbon synthesis conditions, the improvement comprising increasing production of higher molecular weight hydrocarbons by the addition of an effective amount of aluminum metal vapor to the reaction gas, said synthesis conditions including a temperature greater than 1000.degree. C. and a gas hourly space velocity of greater than 3200 hr.sup.-1 and wherein said hydrocarbon synthesis catalyst contains a carbide, nitride, boride or oxide of a Group I-A, II-A, III-A, IV-B or actinide series metal.
In a continuous catalytic process for the production of higher molecular weight hydrocarbons from lower molecular weight hydrocarbons in which a lower molecular weight hydrocarbon containing reaction gas is contacted in a reaction zone with a higher molecular weight hydrocarbon synthesis catalyst under C.sub.2 + hydrocarbon synthesis conditions, improvement comprising increasing the production of higher molecular weight hydrocarbons by the addition of an effective amount of aluminum metal vapor to the reaction gas, said synthesis conditions including a temperature in the range of 1150.degree. to 1175.degree. C., a space velocity is in the range of 9000 to 18,000 hr.sup.-1 and wherein at least 40 mole percent of said lower molecular weight hydrocarbons is converted to higher molecular weight hydrocarbons and wherein said hydrocarbon synthesis catalyst contains a carbide, nitride, boride or oxide of a Group I-A, II-A, III-A, IV-B or actinide series metal.
In a continuous catalytic process for the production of higher molecular weight hydrocarbons from lower molecular weight hydrocarbons in which a lower molecular weight hydrocarbon containing reaction gas is contacted in a reaction zone with a higher molecular weight hydrocarbon synthesis catalyst under C.sub.2 + hydrocarbon synthesis conditions, the improvement comprising increasing the production of higher molecular weight hydrocarbons by the addition of 0.02 to 0.5 parts per million of aluminum metal vapor to the reaction gas, said synthesis conditions including a temperature in the range of 1150.degree. to 1175.degree. C., a space velocity is in the range of 9000 to 18,000 hr.sup.-1, said catalyst contains an oxide of a Group I-A, II-A, III-A, IV-B or actinide series metal and wherein at least 40 mole percent of said lower molecular weight hydrocarbons is converted to higher molecular weight hydrocarbons.
Dependencies are inferred from the claim text.