Catalyst and method for preparing butene-2 through butene-1 hydroisomerization

A technology for hydroisomerization and catalyst, which is applied in the fields of isomerization to produce hydrocarbons, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. The problems of low hydroisomerization conversion rate and low total olefin yield can achieve the effects of high reaction space velocity, helpful reaction selectivity and water resistance, and low olefin hydrogenation rate.

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

[0004] One of the technical problems to be solved by the present invention is the technical problems of low n-butene hydroisomerization conversion rate, low total olefin yield and poor butene-2 ​​selectivity in the prior art. Catalyst for the Hydroisomerization of En-1 to Butene-2

Method used

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  • Catalyst and method for preparing butene-2 through butene-1 hydroisomerization
  • Catalyst and method for preparing butene-2 through butene-1 hydroisomerization
  • Catalyst and method for preparing butene-2 through butene-1 hydroisomerization

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Weigh 30 grams of pseudo-boehmite, 150 grams of θ-alumina, 5 grams of δ-alumina, and 9 grams of scallop powder, mix them, and then add 20 grams of polyvinyl alcohol-containing solution (mass concentration: 5%), the concentration 4.0 grams of 68% nitric acid, 300 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 was calcined for 4 hours to obtain carrier Z1. The carrier composition is shown in Tables 1 and 2, and the carrier properties are shown in Table 3. The carrier is impregnated in an equal amount of impregnation solution with a nickel content of 8%, 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 4, wherein the contents of each component are based on catalyst weight.

[0022]

Embodiment 2

[0024] Weigh 30 grams of pseudo-boehmite, 150 grams of θ-alumina, 20 grams of δ-alumina, 9 grams of scallop powder, 10 grams of diatomaceous earth, mix, and then add polyvinyl alcohol-containing solution (mass concentration is 5 %) 20 grams, 4.0 grams of nitric acid with a concentration of 68%, 300 milliliters of aqueous solution, extruded into a clover-shaped carrier of φ2.5 mm, wet strips after 120 o C dried for 4 hours at 750 o C was calcined for 4 hours to obtain carrier Z2. The composition of the carrier is shown in Tables 1 and 2, and the properties of the carrier are shown in Table 3. The carrier is impregnated in an equal amount of impregnation solution with a nickel content of 10%, 60 o C drying for 8 hours, 450 o C was calcined for 4 hours to obtain Ni-based catalyst C2. The catalyst composition is shown in Table 4, wherein the contents of each component are based on catalyst weight.

[0025]

Embodiment 3

[0027]Weigh 30 grams of pseudo-boehmite, 140 grams of θ-alumina, 45 grams of δ-alumina, 9 grams of scallop powder, 30 grams of diatomaceous earth, mix, and then add a solution containing polyvinyl alcohol (mass concentration of 5 %) 20 grams, 4.0 grams of nitric acid with a concentration of 68%, 1.2 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 was calcined for 4 hours to obtain carrier Z3. The carrier composition is shown in Tables 1 and 2, and the carrier properties are shown in Table 3. The carrier is impregnated in equal amounts in an impregnating solution with a metal nickel content of 12% and a metal molybdenum content of 0.1%, 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 4, wherein the contents of each component are based on catalys...

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Abstract

The invention relates to a catalyst and a method for preparing butene-2 through butene-1 hydroisomerization. The technical problems in the prior art the n-butene hydroisomerization is low in conversion rate, the total olefin yield is low and the butene-2 is low in selectivity are mainly solved. With the adoption of the technical scheme, a mixed-phase alumina carrier consisting of theta-phase alumina and delta-phase alumina is adopted, the theta-phase alumina accounts for 60-90wt%, and the delta-phase alumina accounts for 10-40wt%. The problems are well solved, and the catalyst and method can be used for industrial production of cracking C4 fractions and increasing the yield of butene-2.

Description

technical field [0001] The invention relates to a catalyst and method for olefin hydroisomerization, in particular to a catalyst and method for preparing butene-2 ​​through hydroisomerization of butene-1, a raw material for the disproportionation of C4 olefins. Background technique [0002] Olefin disproportionation refers to the technology in which butene-2 ​​in the C4 fraction undergoes a metathesis reaction with ethylene under the action of a catalyst to produce propylene. The reaction uses a non-precious metal catalyst, and the operating temperature is higher at 200-400 o C. The catalyst is easily deactivated due to the polymerization and gelation of butadiene and alkyne in the C4 component, resulting in poor catalyst stability and frequent regeneration. Through the hydroisomerization technology, the diolefins and alkynes in the raw materials can be removed first, and at the same time, butene-1 can be isomerized to butene-2, so as to improve the quality of raw materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/883B01J23/887B01J23/888C07C11/08C07C5/13C07C5/25
Inventor 赵多刘仲能王建强任杰顾国耀
Owner CHINA PETROLEUM & CHEM CORP
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