Heavy oil cracking catalyst and application thereof
A heavy oil cracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, cracking, etc., can solve the problems of poor anti-heavy metal pollution performance, insufficient total yield of gasoline, diesel and liquefied gas, and achieve anti-metal pollution Strong ability, strong anti-calcium and iron pollution ability, good coke selectivity effect
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[0015] The preparation method of the modified ultra-stable Y-type zeolite comprises: mixing the hydrothermal ultra-stable Y-type zeolite prepared according to the prior art and a mixed acid solution with a concentration of 0.01-3N in a liquid-solid ratio of 20-40, Sealed, filled with gas to make the system pressure 0.1-0.5MPa (gauge pressure), then kept at 95-130°C and 0.1-0.5MPa (gauge pressure) for 5-60 minutes, and then filtered, washed and dried to obtain the obtained The modified ultra-stable Y-type zeolite; wherein, the mixed acid solution is a solution comprising an inorganic acid and an organic acid, and the ratio of the normal concentration of the organic acid to the inorganic acid in the solution is 2.5: 1 to 1: 2, preferably It is 2:1~1:1.5. The inorganic acid is one or more of sulfuric acid, hydrochloric acid, nitric acid and phosphoric acid, preferably hydrochloric acid; the organic acid is one or more of citric acid, oxalic acid, acetic acid and formic acid, pref...
Example Embodiment
[0028] Example 1
[0029] Under stirring, in 16.7 kilograms of decationized water, add 11.3 kilograms of rectorite, stir for 15 minutes, then add 179 grams of chemically pure hydrochloric acid (concentration is 36.5% by weight), stir for 30 minutes, add 456 grams of lanthanum chloride (LaCl 3 ·7H 2 O, produced by Beijing Chemical Reagent Co., Ltd.), after stirring for 60 minutes, a slurry with a solid content of 35% by weight was obtained, which was denoted as T1.
Example Embodiment
[0030] Example 2
[0031] In 12.7 kg of decationized water, add 912 g of lanthanum chloride (same as above) and 200 g of titanium dioxide (produced by Beijing Chemical Reagent Co., Ltd.), and after stirring for 10 minutes, add 10.9 kg of rectorite, stir for 30 minutes, and then add 48 g of chemical Pure hydrochloric acid (concentration: 36.5% by weight) was stirred for 60 minutes to obtain a slurry with a solid content of 40% by weight, which was designated as T2.
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