Hydrogenating and condensation point depressing catalyst and its preparing method
A technology for depressurizing pour point by hydrogen and catalyst, which is applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of reducing catalyst acidity, high preparation cost and high energy consumption, and achieves improved performance and good effect. , the effect of reducing energy consumption
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Embodiment 1
[0030] 1. Catalyst Preparation
[0031] 8.3g of ammonium metatungstate and 3.9g of nickel nitrate were mixed, ground into a powder of more than 160 mesh, and mixed with 37.3g of small-pore alumina (specific surface 238m 2 g-1 , pore volume 0.48mL·g -1 ) mix evenly, add 1.5mol / L, 56mL nitric acid aqueous solution and stir to be prepared into binder, and 67gHZSM-5 molecular sieve (dry basis 97wt%), manufacturer: Catalyst Factory of Tianjin Nankai University, SiO 2 / Al 2 o 3 molar ratio=38) mixed together, kneaded, extruded, dried at 130°C for 4 hours, calcined at 580°C for 4 hours, impregnated (preparation of impregnation solution: 15.8g nickel nitrate, 1.1g potassium nitrate dissolved in 100mL water), dried at 130°C Calcined for 4 hours at 580°C for 4 hours to obtain a catalyst whose properties are shown in Table 1.
[0032] 2. Process evaluation
[0033] Daqing minus first line (see Table 2 for the properties of raw materials) was used as the raw material oil. The test w...
Embodiment 2
[0035] 1. Catalyst preparation
[0036] 4.8g ammonium heptamolybdate and 3.9g nickel nitrate are mixed, are ground into the powder of more than 160 orders, and the small hole aluminum oxide (specific surface 238m 2 g -1 , pore volume 0.48mL·g -1 ) mix evenly, add 1.5mol / L, 56mL nitric acid aqueous solution and stir to be prepared into binder, and 69.1gHZSM-5 molecular sieve (dry basis 97wt%), manufacturer: Catalyst Factory of Tianjin Nankai University, SiO 2 / Al 2 o 3 molar ratio=38) mixed together, kneaded, extruded, dried at 130°C for 4 hours, calcined at 580°C for 4 hours, impregnated (preparation of impregnation solution: 7.9g nickel nitrate, 1.1g potassium nitrate dissolved in 100mL water), dried at 130°C Calcined for 4 hours at 580°C for 4 hours to obtain a catalyst whose properties are shown in Table 1.
[0037] 2. Process evaluation
[0038] Process conditions are the same as in Example 1, and the process evaluation results are shown in Table 4.
Embodiment 3
[0040] 1. Catalyst Preparation
[0041] 7.15g of ammonium metatungstate and 5.85g of nickel nitrate were dissolved in 56mL of nitric acid aqueous solution with a concentration of 1.5mol / L, mixed evenly with 31.3g of small-pore alumina with a dry basis content of 67wt%, and prepared as a binder, and mixed with 72.2gHZSM -5 molecular sieve (97wt% on a dry basis, manufacturer: Tianjin Nankai University Catalyst Factory, SiO 2 / Al 2 o 3 =38) mixed together, kneading, extruding, drying, roasting conditions are the same as in Example 1, impregnating (impregnation solution preparation: 3.95 nickel nitrate, 9.8gLiNO 3 be dissolved in 100mL water), drying and roasting conditions are the same as in Example 1 to obtain the catalyst, and its properties are shown in Table 1. The process evaluation results are shown in Table 4.
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