Ethylene tar treating method
A treatment method, ethylene tar technology, applied in the treatment of hydrocarbon oil, hydrotreating process, petroleum industry, etc., can solve the problems of shortening the operation cycle, etc., and achieve the effect of improving liquid collection, increasing gas velocity, and good thermal stability
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Embodiment 1
[0044] Examples Using the method of the present invention, ethylene tar is contacted with delayed coking and catalytic cracking reaction effluents in a pretreatment reactor to separate light components and heavy components. The light component enters the hydrogenation reaction system, and passes through FZC-102B, FZC-103, FF-26 and FF-46 catalysts in sequence in the hydrogenation reactor. The volume ratio of the four catalysts is 10:10:45:35. The product is separated to obtain gas, hydrogenated gasoline fraction, hydrogenated diesel fraction and hydrogenated heavy oil fraction; the hydrogenated heavy oil fraction enters the catalytic cracking reaction system. Reactor; the heavy component discharged from the bottom of the pretreatment reactor is sent to the delayed coking reaction system, and AlCl is injected into the pipeline before entering the tower 3 The aqueous, coking reaction effluent also enters the pretreatment reactor. The specific operating process conditions are li...
Embodiment 2
[0047] Similar to Example 1, the difference is that AlCl is not injected into the pipeline before entering the tower 3 aqueous solution. The specific operating process conditions are listed in Table 2, and the liquid product distribution is listed in Table 3. After the device was running for 600 hours, the reaction was stopped, and the FF-26 catalyst in the hydrogenation reactor was taken out, and the carbon content was analyzed, as shown in Table 4.
[0048] The device ran smoothly within 600 hours. Compared with Example 1, the distillate yield at 180°C to 350°C was slightly different at 50h and 600h, and the amount of carbon deposited on the hydrotreated FF-26 catalyst was slightly higher.
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