A method for separating coking dry gas
A technology for coking dry gas and catalytic hydrogenation, which is applied in the processing of gas mixtures, hydrocarbon oil treatment, petroleum industry, etc., and can solve the problems of large circulating amount of C4 absorbent, small circulating amount of C4 absorbent, and large investment. , to achieve the effect of low cost, reduced circulation and less investment
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Embodiment 1
[0044] This example is used to illustrate the method for separating coking dry gas of the present invention.
[0045] The coking dry gas with a pressure of 0.6MPaG from the delayed coking unit of the refinery is supplied to the dry gas compressor 1, and the pressure of the dry gas is increased to 4MPaG after three-stage compression treatment. Then the dry gas after the pressurization is supplied to the hydrogenation reactor 2, and the hydrogenation catalyst Co-Mo-Ni series catalyst (purchased from Beijing Research Institute of Chemical Industry, China Petrochemical Corporation, model BY-5) is contacted to catalyze For hydrogenation reaction, control the reaction temperature at 180°C, the reaction pressure at 4MPaG, and the volumetric space velocity at 100h -1 , The molar content of ethylene in the hydrogenation reactor 2 outlet gas was reduced to 0.1%. Then the outlet gas of the hydrogenation reactor 2 is cooled to 15° C. through the dry gas cooler 3 with 7° C. cold water pre...
Embodiment 2
[0053] This example is used to illustrate the method for separating coking dry gas of the present invention.
[0054] The coking dry gas with a pressure of 0.6MPaG from the delayed coking unit of the refinery is supplied to the dry gas compressor 1, and the pressure of the dry gas is increased to 3MPaG after three-stage compression treatment. Then the dry gas after the pressurization is supplied to the hydrogenation reactor 2, and a catalytic hydrogenation reaction occurs in contact with the hydrogenation catalyst Ni-based catalyst (purchased from Beijing Research Institute of Chemical Industry, China Petrochemical Corporation, model YN-1), Control the reaction temperature to 220°C, the reaction pressure to 3MPaG, and the volumetric space velocity to 500h -1 , The molar content of ethylene in the hydrogenation reactor 2 outlet gas was reduced to 0.1%. Then the outlet gas of the hydrogenation reactor 2 is cooled to 10° C. through the dry gas cooler 3 with 7° C. cold water prep...
Embodiment 3
[0062] This example is used to illustrate the method for separating coking dry gas of the present invention.
[0063] The coking dry gas with a pressure of 0.6 MPaG from the delayed coking unit of the refinery is supplied to the dry gas compressor 1, and the pressure of the dry gas is increased to 5 MPaG after three-stage compression treatment. Then the dry gas after the pressurization is supplied to the hydrogenation reactor 2, and the catalytic hydrogenation reaction occurs in contact with the hydrogenation catalyst Ni-based catalyst (purchased from Beijing Research Institute of Chemical Industry, China Petrochemical Corporation, model YN-S), Control the reaction temperature to 150°C, the reaction pressure to 5MPaG, and the volumetric space velocity to 400h -1 , The molar content of ethylene in the hydrogenation reactor 2 outlet gas was reduced to 0.1%. Then the outlet gas of the hydrogenation reactor 2 is cooled to 15° C. through the dry gas cooler 3 with 7° C. cold water ...
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Abstract
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