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Catalyst for removing olefins from reforming oil

A catalyst and de-olefin technology, applied in the direction of molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of large loss of aromatics, high labor intensity, environmental pollution, etc., to prolong life and slow down the covering speed , the effect of good technical effect

Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is that in the prior art, industrial clay is used as a deolefin refining agent, which has the problems of low activity, short life and large loss of aromatics, and a new reformed oil deolefin catalyst is provided.
The catalyst has the advantages of high deolefination activity, less loss of aromatics and long service life when it is used in the reformed oil deolefination reaction under the working condition of industrial clay, and at the same time solves the problems of high labor intensity and serious environmental pollution caused by frequent replacement of clay

Method used

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  • Catalyst for removing olefins from reforming oil
  • Catalyst for removing olefins from reforming oil
  • Catalyst for removing olefins from reforming oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take Na 2 O content is 0.15% (weight) pseudo-boehmite 10 grams, and K 2 90 grams of MCM-41 molecular sieves with an O content of 0.30% (weight) were mixed evenly. A solution was prepared with 4.95 grams of chemically pure nickel nitrate, 0.10 grams of 10% hydrochloric acid, 13.02 grams of 85% phosphoric acid, 2.5 milliliters of chemically pure nitric acid and 63 milliliters of water. Add this mixed solution to the mixture, mix well, knead and extrude to shape, dry and bake at 550°C for 3 hours to obtain a composition of Ni / Cl / P / molecular sieve / alumina=1.0 / 0.01 / 3.5 / 90 / 10 of Catalyst A-1.

Embodiment 2

[0027] Take SiO 2 Content is 40% (weight) of silica sol 50 grams, and K 2 80 grams of MCM-41 molecular sieves with an O content of 0.30% (weight) were mixed evenly. 0.18 grams of chemically pure ammonium molybdate, 0.73 grams of 10% ammonium bromide, 9.30 grams of 85% phosphoric acid, 4.87 grams of chemically pure ammonium fluoride, 2.5 milliliters of chemically pure nitric acid and 33 milliliters of water were used to form a solution. Add this mixed solution to the mixture, mix evenly, knead and extrude to shape, dry and bake at 550°C for 3 hours to obtain a composition of Mo / Br / F / P / molecular sieve / alumina=0.1 / 0.05 / 2.5 / 2.5 / 90 / 10 Catalyst A-2.

Embodiment 3

[0029] Take Na 2 O content is 80 grams of pseudo-boehmite of 0.15% (weight), and K 2 20 grams of TS-1 molecular sieves with an O content of 0.30% (weight) were mixed evenly. A solution was prepared with 17.23 grams of chemically pure niobic acid, 4.95 grams of chemically pure nickel nitrate, 0.94 grams of 98% sulfuric acid, 0.19 grams of 85% phosphoric acid, 2.5 milliliters of chemically pure nitric acid and 63 milliliters of water. Add this mixed solution to the mixture, mix well, knead and extrude to shape, dry and bake at 550°C for 3 hours to obtain a composition of Nb / Ni / S / P / molecular sieve / alumina=9.0 / 1.0 / 0.3 / 0.05 / 20 / 80 Catalyst A-3.

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Abstract

The invention relates to a catalyst for removing olefins from reforming oil, and mainly solves the problems of low activity, short service life and large loss of aromatic hydrocarbon of a refining agent for removing the olefins in the prior art. By adopting a technical scheme that the catalyst comprises the following components in part by weight: 0.1 to 10 parts of at least one of Ni, Mo, Zr and Nb or oxide thereof, 0.01 to 2.00 parts of at least one of Cl, Br and S or oxide thereof, 0.05 to 5 parts of F and P or oxide thereof, 20 to 90 parts of molecular sieve and 10 to 80 parts of at least one of SiO2 and Al2O3 or mixture thereof, the problems are better solved. The catalyst can be used for industrial production of reducing the olefins in the reforming oil.

Description

technical field [0001] The invention relates to a reformed oil deolefin catalyst. Background technique [0002] The adsorbent used in the adsorption and separation process of the isomerization unit in the aromatics complex is very sensitive to olefins. Even if the content of olefin impurities is only a few parts per million, it will have a very adverse impact on the process. In order to protect the adsorbent, generally in the second There is a refining process before the toluene tower to remove trace olefins contained in each feed. The content of reformed oil olefins in each feedstock of the xylene tower is the highest, which is the focus of refining. [0003] At present, most enterprises in the world use clay refining process to remove trace olefins in reformed oil. Clay has an acidic center, and has certain catalytic superposition ability and pore adsorption under high-pressure liquid phase and 150-200°C conditions. The ability to make the trace olefins contained in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/76B01J29/78B01J29/89B01J29/24B01J29/80B01J29/16B01J29/48B01J29/14C10G29/16
Inventor 王雨勃孔德金郭宏利侯敏
Owner CHINA PETROLEUM & CHEM CORP