A method of using waste animal and vegetable oil to produce aviation biofuel
A technology of animal and vegetable oils and biofuels, which is applied in the direction of biological raw materials, fat oil/fat refining, and preparation of liquid hydrocarbon mixtures, etc. It can solve the problems of large-scale, long-term operation, inability to fully meet quality requirements, and coking of the catalyst bed. or fouling, to avoid poisoning, increase operational flexibility, and slow down coking or fouling
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[0046] The raw material oil 1 directly enters the pretreatment unit 2, removes mechanical impurities, chlorine, metals, and water in the raw material through filtration-electric desalination and reduces the acid value, and the pretreated oil 3 is mixed with the vulcanizing agent 4 and the hydrorefined circulating oil 15, Then, under the injection of the mixed hydrogen flow of new hydrogen 5 and circulating hydrogen 11, it enters the hydroprocessing unit 6 to remove impurities such as oxygen, sulfur, nitrogen, chlorine and metals, and the hydroprocessing gas-liquid stream 7 enters the gas-liquid separator 8 , the high fraction gas phase 9 obtained by separation is removed carbon monoxide, carbon dioxide and light hydrocarbons by a pressure swing adsorption unit 10 to obtain a circulating hydrogen 11, which is boosted by a compressor 12 and then circulated to the inlet of the hydroprocessing unit to be mixed with new hydrogen 5. The separated liquid hydrocarbons 13 enter the dega...
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