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Isomerization catalyst composition and application thereof

A technology of catalysts and compositions, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical/physical processes, etc., can solve problems such as influence, low equilibrium concentration of isomer products, and influence on octane number

Active Publication Date: 2013-04-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] USP4,232,181, GB1039246, GB1189850, USP4,665,272 and other patent documents have described the preparation method of this type of catalyst in detail, but because the application temperature of the zeolite-type dual-function catalyst is relatively high, and the equilibrium concentration of the isomer product at high temperature is low, Especially for n-hexane, a higher reaction temperature will affect the concentration of 2,2-dimethylbutane (2,2-DMB) in the isomerized product, and 2,2-DMB has a high octane number, If its concentration is reduced, it will directly affect the octane number of isomerized products

Method used

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Examples

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preparation example Construction

[0015] Provide a kind of specific preparation method of catalyst of the present invention below, but not limited to this method, concrete steps are:

[0016] (1) loading rare earth elements on mordenite, drying and roasting to obtain mordenite modified by rare earth elements;

[0017] (2) loading sulfate ions on aluminum hydroxide and / or kaolin, drying and roasting to obtain sulfur-modified inorganic refractory oxides;

[0018] (3) fully mixing the sulfur-modified inorganic refractory oxide prepared in step (2), peptizing agent and deionized water to form a viscous substance, which is used as a binder for preparing the catalyst of the present invention;

[0019] (4) Fully kneading the modified mordenite prepared in step (1), the binder, extrusion aid and water prepared in step (3) into a plastic paste, extruded into strips, dried and roasted to obtain Catalyst carrier of the present invention;

[0020] (5) Loading element VIII and additives on the catalyst carrier prepared i...

Embodiment 1

[0030] Example 1 (if there is no special note below, the percentages are percentages by weight)

[0031] The preparation steps of a kind of catalyst of the present invention are as follows:

[0032] (1) Take 300 grams of mordenite with a silicon-aluminum ratio of 18, and prepare 450 milliliters of lanthanum nitrate solution with a lanthanum oxide content of 50 grams. The above solution containing lanthanum nitrate and mordenite were fully mixed, dried at 110°C and calcined at 500°C for 4 hours to obtain lanthanum-modified mordenite, the composition of which was: lanthanum oxide / mordenite=1 / 6.

[0033] (2) Take 500 grams (calculated as alumina) of aluminum hydroxide (SB produced by Condean, Germany), add 3000 milliliters of 1 mol / liter sulfuric acid to it, and soak at room temperature for 5 hours. Remove the supernatant, dry at 110°C, and bake at 520°C for 6 hours to obtain a sulfur-containing alumina refractory compound.

[0034] (3) Take 450 grams of modified alumina prepar...

Embodiment 2

[0038] The preparation of catalyst E-2 of the present invention

[0039] The preparation process of the catalyst E-2 of the present invention is the same as in Example 1, except that cerium nitrate is used to replace lanthanum nitrate, and ammonium sulfate is used to replace sulfuric acid. The prepared catalyst of the present invention is numbered E-2, and its catalyst composition is shown in Table 1 , and the reaction results are shown in Table 2.

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PUM

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Abstract

The invention discloses an isomerization catalyst composition and application thereof. The catalyst comprises the following components in percentage by weight: 0.01-5% of VIII-family noble metal element in the periodic table of elements, 10-80% of rare-earth modified mordenite, 0.1-10% of assistant and the balance of binding agent of which the sulfur content is 0.5-5.0%, wherein the rare-earth modified mordenite accounts for 5-40 wt% of the rare-earth metal oxide. The catalyst is used in the isomerization process of C4-C12 alkanes, has the characteristics of high catalytic activity, high isomeric olefine selectivity and the like, and can be used for producing a blending component for high-octane gasoline.

Description

technical field [0001] The invention relates to an isomerization catalyst composition and its application, more specifically, the invention relates to a catalyst composition suitable for C4-C12 alkane isomerization and its application. Background technique [0002] Under certain conditions, n-alkanes are non-ideal components in petroleum products, and the isomerization reaction of n-alkanes is an important reaction in petroleum processing. Especially in catalytic gasoline blended with refinery residue, the content of sulfur and olefins is relatively high. Hydrodesulfurization and olefin reduction of gasoline can reduce the sulfur content to less than 10μg / g and the olefin content to less than 10v%, but at the same time significantly reduce the octane number. To reduce sulfur and olefins with little or no loss of octane, selective hydrocracking or isomerization is required. The RON of isoparaffins is much higher than that of normal paraffins with the same carbon number. Fo...

Claims

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Application Information

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IPC IPC(8): B01J29/26B01J29/22C10G45/64
Inventor 徐会青刘全杰贾立明王伟
Owner CHINA PETROLEUM & CHEM CORP
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