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Nickle base catalyst for producing butane-1 by hydro-isomerization of butane-2

A nickel-based catalyst, hydrogen isomerization technology, applied in isomerization hydrocarbon production, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problem of low equilibrium conversion rate, olefin addition High hydrogenation rate and other problems, to achieve the effect of high equilibrium conversion rate, low olefin hydrogenation rate, and inhibit deep hydrogenation of olefins

Active Publication Date: 2012-05-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the technical problem of low butene-1 equilibrium conversion rate and high olefin hydrogenation rate of the butene-2 ​​hydroisomerization catalyst existing in the prior art, and a new butene-2 Nickel-Based Catalysts for Hydroisomerization of Butene-1

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Weigh 300 grams of pseudo-boehmite, 150 grams of δ-alumina, 9 grams of Sesbania powder, mix, and then add 25 grams of polyvinyl alcohol solution (mass concentration of 5%), 4.0 grams of nitric acid with a concentration of 68% , 1.5 grams of potassium nitrate, 2 grams of magnesium nitrate, 1.0 grams of lanthanum nitrate, 360 ml of aqueous solution, extruded into a φ2.5 mm clover-shaped carrier, the wet bar was dried at 120°C for 4 hours and then calcined at 750°C for 4 hours to obtain carrier Z1 , The carrier composition is shown in Table 1, and the carrier surface properties are shown in Table 2. The carrier was immersed in an equal amount of nickel nitrate impregnation solution with a metal nickel content of 14%, dried at 60°C for 8 hours, and calcined at 450°C for 4 hours to prepare Ni-based catalyst 1, so that the final Ni content was 10.0% of the carrier weight. The catalyst composition is shown in Table 3, and the content of each component is based on the weight of ...

Embodiment 2

[0018] The carrier Z1 is used, and the carrier preparation method is the same as in Example 1, and the carrier composition is shown in Table 1. Using the same operating steps and conditions as in Example 1, except that the nickel solution was changed to a nickel-ammonia complex solution with a metallic nickel content of 12.0% (nickel carbonate: ammonium carbonate: ammonia = 1.0: 1.0: 1.0) to prepare Ni-based catalyst 4 , The final Ni content is 20.0% of the carrier weight. The composition of the catalyst is shown in Table 3, and the content of each component is based on the weight of the carrier.

Embodiment 3

[0020] Weigh 300 grams of pseudo-boehmite, 45 grams of diatomaceous earth, and 9 grams of sesbania powder, mix them, and then add 25 grams of polyvinyl alcohol solution (mass concentration of 5%) and 4.0 grams of 68% nitric acid. 85% phosphoric acid 1.8 g, potassium nitrate 12.0 g, zirconium nitrate 40.0 g, lanthanum nitrate 20.0 g, 360 ml water solution, extruded into a φ2.5 mm clover carrier, the wet bar is dried at 50°C for 24 hours and then at 750°C Calcined for 4 hours to obtain carrier Z2. The composition of the carrier is shown in Table 1, and the surface properties of the carrier are shown in Table 2. Mix 3.0 grams of cerium nitrate and 50 grams of nickel nitrate solution with a metal nickel content of 14% to prepare an impregnation solution. The carrier and the impregnating solution are impregnated in equal amounts to prepare Ni-based catalyst 5, so that the final Ni content is 20.0% of the carrier weight. The composition of the catalyst is shown in Table 3, and the c...

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Abstract

The invention relates to a nickel-based catalyst for preparing butane-1 by butane-2 hydroisomerization, and mainly solves the technical problems of low equilibrium conversion rate and high olefin hydrogenation rate of butane-2 hydroisomerization catalyst butane-1 in the prior art. By adopting the technical proposal that the nickel-based catalyst for preparing the butane-1 by the butane-2 hydroisomerization comprises the following components in percentage by weight: (a) 5.0 to 40.0 percent of metal nickel or oxides thereof, (b) 0.01 to 6.0 percent of at least one element or oxides thereof selected from rare earth, (c) 0.01 to 2.0 percent of at least one element or oxides thereof selected from IA or IIA in the periodic table of elements, (d) 0 to 12.0 percent of at least one element or oxides thereof selected from silicon, phosphorus, boron or fluorine, (e) 0.1 to 10.0 percent of at least one element or oxides thereof selected from IVB in the periodic table of elements, and (f) the balance being aluminum oxide carrier; and the nickel-based catalyst the solves the problems well, and can be used in the industrial production of the butane-1 prepared by cracking C4 or butane-2 component rich in refinery C4.

Description

technical field [0001] The invention relates to a nickel-based catalyst for butene-2 ​​hydroisomerization to butene-1. Background technique [0002] Butene-1 is mainly used as a comonomer in linear low-density polyethylene (LLDPE), and with the growth of existing LLDPE producers, the supply and demand of butene-1 tend to be tight. The shortage of butene-1 may also affect the large-scale petrochemical complexes being built in my country. At present, high-purity butene-1 mainly comes from the C4 fraction of refineries or ethylene by-product separation units. The remaining C4 fraction after separation of butene-1 mainly includes a small amount of isobutane, a small amount of n-butane, trans-butene-2 ​​and cis-butene-2. At present, the remaining C4 fraction is mainly used as fuel, and the comprehensive utilization rate is low. The isomers of n-butene (trans-butene-2, cis-butene-2, butene-1) can be transformed into each other under certain conditions, and the higher the temper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/83B01J27/185C07C11/08C07C5/25
Inventor 王建强刘仲能吴晓玲赵多
Owner CHINA PETROLEUM & CHEM CORP
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