Method for preparing olefins from synthesis gas
A synthesis gas and olefin technology, applied in the direction of hydrocarbon production from carbon oxides, purification/separation of hydrocarbons, chemical instruments and methods, etc., can solve the problems of short regeneration period, fast coking of catalysts, low yield of olefins, etc.
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[0036] [Example 1]
[0037] The synthesis gas stream is calculated in moles, the ratio of hydrogen to carbon monoxide is 5, 10% of stream I is recycled back to the reaction zone, 60% of stream II is recycled back to the reaction zone, decarbonization zone uses methyldiethanolamine as absorbent, dehydrogenation zone uses PSA separation method , The catalyst life is increased by 5.6%, and the olefin yield is increased by 1.20%.
Example Embodiment
[0038] [Example 2]
[0039] The synthesis gas stream is based on moles, the ratio of hydrogen to carbon monoxide is 4, 10% of stream I is recycled back to the reaction zone, 60% of stream II is recycled back to the reaction zone, decarbonization zone uses methyldiethanolamine as absorbent, dehydrogenation zone uses PSA separation method , The catalyst life is increased by 5.4%, and the olefin yield is increased by 1.21%.
Example Embodiment
[0040] [Example 3]
[0041] The synthesis gas stream is based on moles, the ratio of hydrogen to carbon monoxide is 3, stream I 10% is recycled back to the reaction zone, stream II 60% is recycled back to the reaction zone, the decarbonization zone uses methyldiethanolamine as the absorbent, and the dehydrogenation zone uses PSA separation method , The catalyst life is increased by 5.2%, and the olefin yield is increased by 1.23%.
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