Method for converting synthesis gas into low-carbon olefin
A technology for synthesis gas conversion and low-carbon olefins, which is applied in the field of chemical engineering, can solve the problems of increased production of low-value by-products such as alkanes, unfavorable synthesis of low-carbon olefins, and reduced olefin yield, etc., so as to reduce the water-gas reaction and yield. Increased, high olefin selectivity effect
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Embodiment 1
[0028] (a) Preparation of catalyst
[0029] The Fe-Co-β-SiC catalyst was prepared by sintering method, wherein the molar mass ratio of Fe and Co was 3:1, and the β-SiC carrier was about 40% of the mass of the catalyst;
[0030] (b) Conversion of light olefins
[0031] The catalyst is pressed into pellets and placed in the high-gravity rotating bed reactor grid and fixed on the rotor; before use, the reactor temperature is raised to 300 ° C to activate the catalyst and keep it for 3 hours before passing it into the synthesis Gas, the synthesis gas is composed of hydrogen and carbon monoxide in a molar ratio of 1:1, at a rotation speed of 1600rpm, H 2 / CO is 2, the reaction pressure is 1MPa, the reaction temperature is 280°C, and the volume space velocity of the synthesis gas is 1000h -1 , in the presence of showers of heavy alkanes and no syngas recycle. After 3 hours of reaction, the reaction performance of the catalyst was stable, and the conversion rate of CO single-pass ...
Embodiment 2
[0033] (a) Preparation of catalyst
[0034] The Fe-Co-β-SiC catalyst was prepared by sintering method, wherein the molar mass ratio of Fe and Co was 3:1, and the β-SiC carrier was about 40% of the mass of the catalyst;
[0035] (b) Conversion of light olefins
[0036] The catalyst is pressed into pellets and placed in the high-gravity rotating bed reactor grid and fixed on the rotor; before use, the reactor temperature is raised to 350°C to activate the catalyst and keep it for 4 hours before passing it into the synthesis Gas, the synthesis gas is composed of hydrogen and carbon monoxide in a molar ratio of 1:2, at a rotation speed of 1700rpm, H 2 / CO is 2, reaction pressure is 1.3MPa, reaction temperature is 300°C, synthesis gas volume space velocity is 2000h -1 , in the presence of showers of heavy alkanes and no syngas recycle. After 3 hours of reaction, the reaction performance of the catalyst was stable, and the conversion rate of CO single-pass reaction was 82.1%, inc...
Embodiment 3
[0038] (a) Preparation of catalyst
[0039] The Fe-Co-β-SiC catalyst was prepared by sintering method, wherein the molar mass ratio of Fe and Co was 3:1, and the β-SiC carrier was about 40% of the mass of the catalyst;
[0040] (b) Conversion of light olefins
[0041] The catalyst is pressed into pellets and placed in the high-gravity rotating bed reactor grid and fixed on the rotor; before use, the reactor temperature is raised to 400°C to activate the catalyst and keep it for 5 hours before passing it into the synthesis Gas, the synthesis gas is composed of hydrogen and carbon monoxide according to the molar ratio of 1:2.5, at a rotation speed of 1700rpm, H 2 / CO is 2, reaction pressure is 1.3MPa, reaction temperature is 320°C, and synthesis gas volume space velocity is 3000h -1 , in the presence of showers of heavy alkanes and no syngas recycle. After 3 hours of reaction, the reaction performance of the catalyst was stable, and the conversion rate of CO single-pass react...
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