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Reformate deolefination method without hydrogen

A reformed oil, non-hydrogen-prone technology, applied in chemical instruments and methods, molecular sieve catalysts, physical/chemical process catalysts, etc., can solve problems such as low activity, short life, and large loss of aromatics, and achieve good technical effects and prolong Lifespan, the effect of slowing down the speed of overlay

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 white clay is used as a deolefin refining agent, which has the problems of low activity, short life, and large loss of aromatics. A new method for non-hydrogenation deolefins of reformed oil is provided.

Method used

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  • Reformate deolefination method without hydrogen
  • Reformate deolefination method without hydrogen
  • Reformate deolefination method without hydrogen

Examples

Experimental program
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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 reformate deolefination method without hydrogen, which is mainly used for solving the problems in the prior art that deolefination refining agent is low in activity, short in service life and great in aromatic hydrocarbon loss. The technical scheme adopted by the invention is as follows: olefins in reformate are removed because of polymerization or alkylation reaction carried out on a catalyst for 0.3-20h<-1> at the temperature of 120-240 DEG C and under the pressure of 0.5-3.0 MPa, wherein the catalyst contains 0.1-10 parts by weight of at least one metal or oxide thereof selected from Ni, MO, Zr, and Nb, 0.01-2.00 parts by weight of at least one element or oxide thereof selected from Cl, Br and S, 0.05-5 parts by weight of at least one element or oxide thereofselected from F and P, 20-90 parts by weight of molecular sieve and 10-80 parts by weight of at least one selected from SiO2 and Al2O3 or a mixture thereof, thus the problems in the prior art are solved. The method can be used for industrial production of olefin reduction in reformate.

Description

technical field [0001] The invention relates to a method for high-efficiency deolefinization of reformed oil under the condition of non-hydrogenation. 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...

Claims

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Application Information

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