Porous carrier for hydrogenation catalyst, preparation method, hydrocracking catalyst and hydrocracking method
A technology of hydrogenation catalyst and porous carrier, applied in catalyst carrier, molecular sieve catalyst, chemical instrument and method, etc., can solve the problems of low BMCI value, lower BMCI value of tail oil, etc., and achieve high selectivity.
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[0051] The method for preparing a porous carrier according to the present invention further includes step (2): feeding the raw material mixture into an extruder, kneading in the extruder and then extruding to obtain a molded body.
[0052] The raw material mixture can be fed into an extruder for kneading and extrusion under conventional conditions in the art to obtain a molded body. In the process of extruding raw materials with an extruder to obtain a molded body, the cooling conditions of the extruder are generally controlled so that the temperature of the extruded molded body is around room temperature (less than 40° C.), but the The temperature of the molded body at the outlet of the extruder is 40-150° C., and the prepared porous carrier has a higher pore size concentration, which can reach more than 28. Preferably, the temperature of the shaped body at the outlet of the extruder is 50-120°C. Further preferably, the temperature of the molded body at the outlet of the ext...
Embodiment 1
[0083] (1) 120.3g of C powder (a kind of pseudo-boehmite, purchased from Changling Catalyst Factory, with a dry basis content of 73.5% by weight, a relative crystallinity of 91.7%, and an average particle size of 55nm), 67.9g of Siral 30 Powder (purchased from Sasol company, dry basis content is 77.5% by weight, in terms of oxides, alumina content is 69.8% by weight, silicon oxide content is 30.2% by weight, average particle size is 55nm, XRD detection confirms to have pseudoboehmite Stone structure) and 7.4g USY-1 molecular sieve (dry basis content 80.5% by weight, unit cell constant is The crystallinity is 87.1%, the sodium oxide content is 0.09% by weight) and mixed uniformly to obtain mixed powder. Add 11.3 g of aluminum nitrate to 138 mL of deionized water (at 25° C.) to prepare a solution, then mix it with the above mixed powder to obtain a raw material mixture. The obtained raw material mixture was fed into an extruder and kneaded for 15 minutes, and then extruded to ...
Embodiment 2
[0097] (1) The porous carrier was prepared by the same method as in Example 1, except that the cooling condition of the extruder was controlled so that the temperature of the extrudate at the outlet of the extruder was 50°C. The pore size distribution, pore size concentration and radial crushing strength of the obtained porous supports are listed in Table 1.
[0098] (2) The catalyst was prepared by the same method as in Example 1, except that the porous carrier was the porous carrier prepared in step (1) of Example 2.
[0099] (3) The catalyst prepared in step (2) of embodiment 2 was evaluated by the same method as step (3) of embodiment 1, and the results are listed in table 2.
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