Method for preparing low-carbon olefin from synthesis gas
A low-carbon olefin and synthesis gas technology, which is applied in the field of co-production of gasoline and synthesis gas to produce low-carbon olefins, can solve the problems of large energy consumption, low selectivity of low-carbon olefins, low catalyst activity, etc., and achieve high conversion rate and methane The effect of low selectivity and simple separation process
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[0052] Example 1
[0053] Use as figure 1 In the described process, the embodiment verification process uses a fluidized bed reactor for the high temperature Fischer-Tropsch reaction process, and a fixed bed reactor for the catalytic cracking reaction process.
[0054] High temperature Fischer-Tropsch reaction conditions: H 2 / CO=1 / 1 (molar ratio, the same below), reaction temperature 340℃, reaction pressure 2MPa, catalyst load (reaction actual volumetric space velocity) 8000h -1 , 80% carbon monoxide, hydrogen recycle stream ( figure 1 China Logistics 7) Circulate back to the high temperature Fischer-Tropsch reaction zone.
[0055] High temperature Fischer-Tropsch uses catalyst as Fe 100 Zn 35 Cr 15 Mg 60 Al 120 Na 3 O x .
[0056] Catalytic cracking reaction conditions: reaction temperature 500℃, reaction pressure, 0.1MPa, catalyst load (actual mass space velocity of reaction) 20h -1 , The recycle stream of 80% carbon five or more aromatic-rich oil is recycled back to the catalytic...
Example Embodiment
[0061] Example 2
[0062] Use as figure 1 In the described process, the embodiment verification process uses a fluidized bed reactor for the high temperature Fischer-Tropsch reaction process, and a fixed bed reactor for the catalytic cracking reaction process.
[0063] High temperature Fischer-Tropsch reaction conditions: H 2 / CO=1.5 / 1, reaction temperature 320℃, reaction pressure 1.5MPa, catalyst load (actual volumetric space velocity of reaction) 4000h -1 , 90% carbon monoxide and hydrogen recycle stream is recycled back to the high temperature Fischer-Tropsch reaction zone.
[0064] High temperature Fischer-Tropsch uses catalyst as Fe 100 Zn 50 Cr 12 Mg 30 Al 90 Na 8 O x .
[0065] Catalytic cracking reaction conditions: reaction temperature 600℃, reaction pressure, 0.5MPa, catalyst load (actual mass space velocity of reaction) 30h -1 , The recycle stream of 90% carbon five or more aromatic-rich oil is recycled back to the catalytic cracking reaction zone.
[0066] The catalyst used...
Example Embodiment
[0070] Example 3
[0071] Use as figure 1 In the described process, the embodiment verification process uses a fluidized bed reactor for the high temperature Fischer-Tropsch reaction process, and a fixed bed reactor for the catalytic cracking reaction process.
[0072] High temperature Fischer-Tropsch reaction conditions: H 2 / CO=1.5 / 1, reaction temperature 350℃, reaction pressure 2.5MPa, catalyst load (actual volumetric space velocity of reaction) 20000h -1 , The 100% carbon monoxide and hydrogen recycle stream is recycled back to the high temperature Fischer-Tropsch reaction zone.
[0073] High temperature Fischer-Tropsch uses catalyst as Fe 100 Mn 75 Cr 15 Mg 60 Al 120 K 3 O x .
[0074] Catalytic cracking reaction conditions: reaction temperature 550℃, reaction pressure, 0.3MPa, catalyst load (reaction actual mass space velocity) 30h -1 , The recycle stream of 100% C5 or higher aromatic-rich oil is recycled back to the catalytic cracking reaction zone.
[0075] The catalyst used in...
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