Method for producing propylene, ethene by using catalytic cracking olefin through fluid bed
A fluidized bed catalyst and catalytic cracking technology, which is applied in the field of ethylene and fluidized bed olefin catalytic cracking to produce propylene, can solve the problems of poor hydrothermal stability, catalyst coking and deactivation, etc., achieve good mechanical strength, improve reaction performance, and high The effect of reactivity and propylene selectivity
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Embodiment 1
[0033] Step 1: 200 grams of NaZSM-5 molecular sieve with a molar silicon-aluminum ratio of 200 (purchased from Shanghai No. Four times, washed with deionized water until free of chlorine radicals, and dried at 120°C for later use. 100 grams of the above molecular sieve and Ce 2 o 3 100 milliliters of 1.0 grams of cerium nitrate solution were mixed evenly, heated and evaporated to dryness under stirring, then dried at 120°C for 10 hours, roasted at 550°C for 2 hours, then added to a solution made of 1.60 grams of 85% phosphoric acid and 100 grams of water, After mixing evenly, evaporate to dryness, then dry at 120°C for 10 hours, roast at 550°C for 2 hours, and finally pulverize.
[0034] Step 2: Add 148 grams of kaolin (15% reduction on ignition), soak in 250 grams of water for 10 minutes, then beat for 10 minutes, add 625 grams of aluminum sol (20% alumina content) and stir for 5 minutes, and add 20% nitric acid to adjust the pH value is about 3.5, finally add 250 grams o...
Embodiment 2~11
[0036] The same preparation process as in Example 1, only changing the ratio of different components, to obtain different microsphere catalysts.
[0037] Install 30 grams of catalyst in a Φ30 fluidized bed reactor to etherify C 4 Catalyst performance was evaluated at 550°C with a space velocity of WHSV of 10 hours-1, a water / olefin weight ratio of 1, and the results are listed in Table 1.
[0038]
Embodiment 12~16
[0040] implement
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