Aromatic olefin-reducing catalyst and use thereof

An olefin catalyst and catalyst technology, which is applied in molecular sieve catalysts, physical/chemical process catalysts, refining with metal salts, etc., can solve the problems of short clay life, frequent replacement, and high labor intensity, so as to prolong life and reduce carbon deposition rate , Improve the effect of anti-carbon deposition ability

Inactive Publication Date: 2015-11-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] One of the technical problems to be solved by the present invention is to provide a novel catalyst for reducing olefins in aromatic hydrocarbons, which has a strong ability to resist carbon deposition, in order to solve the problems of short clay life, frequent replacement, high labor intensity, and serious environmental pollution in the refining process for removing alkenes from clay , good stability, less loss of aromatics, one-way life can reach more than 10 times that of clay, and the total life can reach more than 50 times that of clay, which effectively reduces labor intensity and environmental pollution, and has a good prospect for industrial application

Method used

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  • Aromatic olefin-reducing catalyst and use thereof
  • Aromatic olefin-reducing catalyst and use thereof
  • Aromatic olefin-reducing catalyst and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take Na 2 Pseudo-boehmite (α-Al) with an O content of less than 0.15% (weight) and a loss on ignition of 30% at 550°C 2 o 3 ·H 2 O) 128.57 grams, with Na 2 11.10 grams of mordenite with an O content of less than 1.5% (weight) and a loss on ignition of 10% were mixed evenly, and a solution was prepared with 2.5 milliliters of chemically pure nitric acid and 65 milliliters of water. Add this mixed solution to the mixture of pseudo-boehmite and mordenite, mix evenly, knead and extrude into a rod, dry it and bake it at 550°C for 3 hours to obtain the catalyst A- 1.

Embodiment 2～3

[0026] Using the preparation method of Example 1, adjusting the ratio of molecular sieve and pseudo-boehmite, respectively prepared catalyst A-2 with alumina:molecular sieve=50:50 and catalyst A-3 with alumina:molecular sieve=10:90.

Embodiment 4～10

[0028] Replace the mordenite used in A-2 with beta zeolite, X zeolite, Y zeolite, ZSM-5 molecular sieve, SAPO-11 molecular sieve, MCM-41 molecular sieve, TS molecular sieve, and prepare B, C, D, E, F, G, H catalysts.

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Abstract

The present invention relates to an aromatic olefin-reducing catalyst mainly solving the problems of short carclazyte life, frequent replacement, large labor intensity, and serious environmental pollution when the carclazyte is used for removing trace olefins in an aromatic material in current industry. The aromatic olefin-reducing catalyst is used, the average pore diameter of the aromatic olefin-reducing catalyst is 5-30nm, the aromatic olefin-reducing catalyst comprises the following components by weight: 0 to 15% of lanthanide elements or a mixture thereof; 0 to 20% of oxides of one or more elements selected from Ca, Zn , Mg and Ti; and 30 to 90% of a molecular sieve, the molecular sieve is at least one selected from mordenite, Y zeolite, ZSM-5 molecular sieve, MCM-22 molecular sieve, MCM-56 molecular sieve, and beta-molecular sieve; and a carrier is one substance selected from alumina and silica or a mixture thereof, and by the technical scheme, the problem is preferably solved, and the method can be used for aromatic olefin-reducing industrial production.

Description

technical field [0001] The invention relates to an aromatic hydrocarbon reducing olefin catalyst, which can be used to replace industrial clay and solve the problems of short service life, frequent replacement, high labor intensity and serious environmental pollution. technical background [0002] Aromatics are the basic raw materials of the petrochemical industry, which mainly come from aromatics complexes. The aromatic products after catalytic reforming reaction all contain a certain amount of olefin impurities. Olefins are active, not only easy to polymerize to form colloids, but also may react with other components to form non-ideal components, which will have a great impact on the quality of aromatic products. [0003] On the other hand, certain petrochemical processes such as xylene adsorption separation are particularly sensitive to olefins, even if the content of olefin impurities is only a few parts per million, it will have a very adverse effect on the process. I...

Claims

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Application Information

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IPC IPC(8): B01J29/18B01J29/70B01J29/08B01J29/40B01J29/85B01J29/89B01J29/80B01J29/24B01J29/26C10G29/06C10G29/16
Inventor 王雨勃王月梅龚燕芳杨德琴
Owner CHINA PETROLEUM & CHEM CORP
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