Nickel base catalyst for producing butylene-1 with butylenes-2 hydroisomerization containing a few butadiene

A nickel-based catalyst and hydroisomerization technology, which is applied in the fields of isomerization to hydrocarbon production, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problem of reducing olefin hydrogenation rate, processing Inconvenient utilization, product contamination and other problems, to achieve the effect of improving isomerization activity, good pore size distribution, and long catalyst life

Inactive Publication Date: 2009-05-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, in order to reduce the excessive hydrogenation of olefins in the process of hydroisomerization, U.S. Patent USP3531545 proposes that a sulfur-containing compound can be added to the C4 material to reduce the hydrogenation rate of olefins. This method is not only cumbersome but also pollutes the product. Processing and utilization bring a lot of inconvenience

Method used

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  • Nickel base catalyst for producing butylene-1 with butylenes-2 hydroisomerization containing a few butadiene
  • Nickel base catalyst for producing butylene-1 with butylenes-2 hydroisomerization containing a few butadiene
  • Nickel base catalyst for producing butylene-1 with butylenes-2 hydroisomerization containing a few butadiene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take by weighing 300 grams of pseudo-boehmite, 150 grams of δ-alumina, 9 grams of scallop powder, mix, then add 25 grams of polyvinyl alcohol-containing solution (mass concentration is 5%), and concentration is 4.0 grams of 68% nitric acid , 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 clover-shaped carrier with a diameter of 2.5 mm, dried at 120°C for 4 hours and then roasted at 750°C for 4 hours to obtain carrier Z1 , the composition of the carrier is shown in Table 1, and the surface properties of the carrier are shown in Table 2. The carrier and 3.0 g of silver nitrate were impregnated in equal amounts in a 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 obtain Ni-based catalyst 1, so that the final Ni content of the carrier was 10.0% by weight of alumina. The catalyst composition is sh...

Embodiment 2

[0018] Carrier Z1 was used, and the preparation method of the carrier was the same as in Example 1, and the composition of the carrier was shown in Table 1. With the same operating steps and conditions of Example 1, just change the nickel solution to be a nickel-ammonia complex solution (nickel carbonate: ammonium carbonate: ammoniacal liquor=1.0: 1.0: 1.0) with a metal nickel content of 12.0%, and add nitric acid in the dipping solution 3 grams of silver was used to prepare Ni-based catalyst 4, so that the final Ni content was 20.0% of the weight of the carrier. The catalyst composition is shown in Table 3, and the content of each component is based on the weight of the carrier.

Embodiment 3

[0020]Take by weighing 300 grams of pseudo-boehmite, 45 grams of diatomaceous earth, and 9 grams of asparagus powder, mix, then add 25 grams of polyvinyl alcohol solution (mass concentration is 5%), and the concentration is 4.0 grams of 68% nitric acid, 1.8 grams of phosphoric acid with a concentration of 85%, 12.0 grams of potassium nitrate, 40.0 grams of zirconium nitrate, 20.0 grams of lanthanum nitrate, 360 milliliters of aqueous solution, extruded into a clover carrier with a diameter of 2.5 mm, wet strips dried at 50 ° C for 24 hours and then dried at 750 ° C Calcined for 4 hours, the carrier Z2 was obtained. 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 silver nitrate with 50 grams of nickel nitrate solution with a metal nickel content of 14% to prepare an impregnation solution. The carrier and the impregnating solution were impregnated in equal amounts to prepare Ni-based catalyst 5,...

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Abstract

The invention relates to a Ni-based catalyst for butene-1 synthesis via hydroisomerization of butene-2 containing a small amount of butadiene, and mainly solves the technical problems of low equilibrium conversion rate of butene-1 and high hydrogenation rate of alkenes in the prior art. In order to solve the problems, the technical scheme is as follows: the components in weight percentages of the Ni-based catalyst for butene-1 synthesis via hydroisomerization of butene-2 containing a small amount of butadiene are as follows: 5.0% to 40.0% of metal nickel or an oxide thereof, 0.01% to 6.0% of at least one element selected from Cu and Ag or an oxide thereof, 0.01% to 6.0% of at least one element selected from rare earths or an oxide thereof, 0.01% to 2.0% of at least one element selected from the group IA or the group IIA in the periodic table of elements or an oxide thereof, 0% to 12.0% of at least one element selected from Si, P, B and F or an oxide thereof, 0% to 10.0% of at least one element selected from the group IVB in the periodic table of elements or an oxide thereof, and aluminum oxide carrier in balance amount. The Ni-based catalyst is applied to the industrial production of butene-1 from butene-2 in pyrolysis or refinery C4 fractions.

Description

technical field [0001] The invention relates to a nickel-based catalyst for preparing butene-1 from butene-2 ​​hydroisomerization containing a small amount of butadiene. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J23/83B01J27/185C07C11/08C07C5/25
Inventor 王建强赵多吴晓玲刘仲能
Owner CHINA PETROLEUM & CHEM CORP
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