Method for preparing propylene and aromatic hydrocarbon by using C4 above mixed hydrocarbon containing alkene
A technology for mixing hydrocarbons and olefins, applied in chemical instruments and methods, hydrocarbons, hydrocarbons, etc., can solve problems such as the inability to obtain fluidized bed process conversion effects, and achieve catalyst cost reduction, low price, and long service life Effect
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Embodiment 1
[0051] The preparation process of catalyst A is as follows: SiO 2 / Al 2 o 3 ZSM-5 molecular sieve with a molar ratio of 25 (purchased from Shanghai Fuxu Molecular Sieve Co., Ltd.) was impregnated with a solution of lanthanum nitrate (lanthanum nitrate hexahydrate, purchased from Zibo Weijie Rare Earth Co., Ltd.) solution for 24 hours, and filtered off the remaining liquid at 110 ° C. Dry and then bake at 550°C for 4 hours. The obtained sample was mixed with clay, aluminum sol, silica sol (all purchased from Zhejiang Yuda Chemical Co., Ltd.) and phosphoric acid (85% phosphoric acid reagent, Luoyang Haohua Chemical Reagent Co., Ltd.) and dispersed in water to form a slurry. The solids content was 35%. After the slurry is aged at room temperature for 5 hours, spray molding is performed to form microspheres with a particle size distribution of 20-100 microns. The above-mentioned microspheres were calcined at 550°C for 1 hour, and then aged at 750°C for 96 hours under a water v...
Embodiment 2
[0059] Catalyst B was prepared as follows: SiO 2 / Al 2 o 3 The ZSM-5 molecular sieve with a molar ratio of 45 (purchased from Shanghai Fuxu Molecular Sieve Co., Ltd.) was impregnated with a solution of lanthanum nitrate (lanthanum nitrate hexahydrate, purchased from Zibo Weijie Rare Earth Co., Ltd.) solution for 24 hours, and the residual liquid was filtered off at 110 ° C. Dry and then bake at 550°C for 4 hours. The above samples were soaked in phosphoric acid (85% phosphoric acid reagent, Luoyang Haohua Chemical Reagent Co., Ltd.) solution for 24 hours, and then dried and roasted in the same way. The obtained sample was mixed with clay, aluminum sol and silica sol (all purchased from Zhejiang Yuda Chemical Co., Ltd.) and dispersed in water to form a slurry with a solid content of 40%. After the slurry is aged at room temperature for 5 hours, spray molding is performed to form microspheres with a particle size distribution of 20-100 microns. The above-mentioned microspher...
Embodiment 3
[0067] Catalyst A is used.
[0068] to mix C 4、C 5 It is raw material, and its composition is shown in Table 5. The feed contains about 81% olefins. The reaction is carried out in a medium-sized riser reactor.
[0069] The reaction conditions are as follows: the total catalyst loading of the medium-sized riser device is 8-10Kg, and the feed rate is 0.5kg / h. The reaction temperature is 575°C-600°C, the regeneration temperature is 650°C, the reaction contact time is about 2.6 seconds, and the feed agent / oil ratio (by weight) is 20. The average residence time of the catalyst in the reactor was 9 seconds. After the normal operation of the device, after a total of 168 hours of reaction-regeneration, the product was sampled and analyzed. The analysis results of the reaction products were obtained from a Varian CP-3800 gas chromatograph equipped with a PONA column and a hydrogen flame detector and a refinery gas analyzer.
[0070] The above reaction results are shown in Table ...
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