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C_4 olefin hydroisomerization catalyst and C_4 olefin hydroisomerization method

A technology for hydroisomerization and carbon tetraolefins, which is applied in the field of carbon tetraolefin hydroisomerization catalysts, can solve the problems of high catalyst cost, low olefin yield, and low reaction equilibrium index, and achieve low olefin hydrogenation rate, The effect of high reaction space velocity and improvement of the ability to resist the formation of green oil

Active Publication Date: 2015-03-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is the technical problems of low reaction equilibrium index, low olefin yield and high catalyst cost in the existing carbon tetraolefin hydroisomerization technology. Hydrogen isomerization catalyst

Method used

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  • C_4 olefin hydroisomerization catalyst and C_4 olefin hydroisomerization method
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  • C_4 olefin hydroisomerization catalyst and C_4 olefin hydroisomerization method

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Experimental program
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Effect test

Embodiment 1

[0030] Weigh 30 grams of pseudo-boehmite, 140 grams of θ-alumina, 40 grams of δ-alumina, 9 grams of scallop powder, 40 grams of silica sol, mix, and then add polyvinyl alcohol-containing solution (mass concentration is 5%) 25 grams, 4.0 grams of nitric acid with a concentration of 68%, 310 ml of aqueous solution, extruded into a clover-shaped carrier with a diameter of 2.5 mm, and the wet strip was passed through 120 o C dried for 4 hours at 750 o C roasting for 4 hours. Vector Z1 was prepared.

[0031] Mix ammonium molybdate: nickel carbonate: ammonium carbonate: ammonia water = 0.005: 1.0: 1.0: 2.0 in proportion and stir evenly to prepare a solution with a metal nickel content of 10% and a molybdenum content of 0.1%, and place the carrier Z1 in the solution Equal impregnation in 60 o C drying for 8 hours, 450 o C was calcined for 4 hours to obtain Ni-based catalyst C1. The catalyst composition is shown in Table 1, wherein the contents of each component are based on the ...

Embodiment 2

[0034]Weigh 30 grams of pseudo-boehmite, 140 grams of θ-alumina, 20 grams of δ-alumina, 9 grams of scallop powder, 60 grams of silica sol, mix, and then add polyvinyl alcohol-containing solution (mass concentration is 5%) 25 grams, 4.0 grams of nitric acid with a concentration of 68%, 0.5 grams of magnesium nitrate, 310 ml of aqueous solution, extruded into a clover-shaped carrier with a diameter of 2.5 mm, and the wet strip was passed through 120 o C dried for 4 hours at 750 o C roasting for 4 hours.

[0035] Mix ammonium molybdate: nickel carbonate: ammonium carbonate: ammonia water = 0.02: 1.2: 1.0: 2.0 in proportion and stir evenly to prepare a solution with a metal nickel content of 12% and a molybdenum content of 0.5%, and place the carrier Z2 in the solution The same amount of impregnation is carried out in the impregnation solution, and the carrier is impregnated with the same amount in the impregnation solution, 60 o C drying for 8 hours, 450 o C was calcined for 4...

Embodiment 3

[0038] Weigh 30 grams of pseudo-boehmite, 140 grams of θ-alumina, 80 grams of δ-alumina, 9 grams of scallop powder, 80 grams of silica sol, mix, and then add polyvinyl alcohol-containing solution (mass concentration is 5%) 25 grams, 4.0 grams of nitric acid with a concentration of 68%, 0.1 g of magnesium nitrate, 310 ml of aqueous solution, extruded into a clover-shaped carrier with a diameter of 2.5 mm, and wet strips after 120 o C dried for 4 hours at 750 o C roasting for 4 hours. Vector Z3 was prepared.

[0039] Mix ammonium molybdate: nickel carbonate: ammonium carbonate: ammonia water = 0.05: 1.25: 1.0: 2.0 in proportion and stir evenly to prepare a solution with a metal nickel content of 13% and a molybdenum content of 1.5%, and place the carrier Z3 in the solution Equal impregnation in 60 o C drying for 8 hours, 450 o C was calcined for 4 hours to obtain Ni-based catalyst C3. The catalyst composition is shown in Table 1, wherein the contents of each component are b...

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Abstract

The invention relates to a catalyst and a method for preparing butane-2 by C_4 olefin hydroisomerization, and the catalyst and the method are mainly used for solving the technical problems in the prior art of low reaction balance index, low olefin yield and high catalyst cost. In order to better solve the problems, the technical scheme adopted by the invention is as follows: the catalyst comprises the following components in parts by weight: (a) 10-20 parts of metal nickel or an oxide thereof; (b) 0.1-5 parts of metal molybdenum or an oxide thereof; (c) 75-90 parts of aluminum oxide-silicon dioxide composite carrier, wherein the pore volume of the catalyst is 0.5-0.9 ml / g, the specific surface area is 150-190 m<2> / g, the average aperture is 13-16 nm, and the pore volume with pore diameter larger than 10 nm occupies 20-60% of the total pore volume. The catalyst can be used in the industrial production of increasing the production of butane-2 by C_4 fraction.

Description

technical field [0001] The invention relates to a carbon tetraolefin hydroisomerization catalyst and method. Background technique [0002] Industrial C4 fractions mainly include ethylene cracking by-product C4 and refinery by-product C4, which contain varying amounts of butadiene, n-butene (butene-1, butene-2), isobutene, isobutene Butane, n-butane, etc., these components are widely used chemical raw materials, especially the large amount of carbon tetraolefins contained in them. Since one-stage hydrogenation C4, two-stage hydrogenation C4, general raffinate C4 and C4 after ether, refinery C4 and C4 after ether all contain a certain amount of alkynes, dienes, etc. , affect the purity of downstream processes and products to varying degrees, and some polymerization reactions require that alkynes and dienes in raw olefins be less than 1×10 - 6 . Therefore, high requirements are put forward for the hydroisomerization catalyst: the catalyst has good selectivity, and only hydro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J35/10C07C5/13C07C11/08
Inventor 赵多王建强刘仲能任杰
Owner CHINA PETROLEUM & CHEM CORP
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