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Catalyst for deeply removing olefin in aromatic hydrocarbon and preparation method thereof

An olefin catalyst and catalyst technology, applied in the direction of molecular sieve catalysts, chemical instruments and methods, hydrogenation and refining of aromatics, etc., can solve the problems of disrupting the continuity of industrial production, short life of clay catalysts, and non-renewable, so as to reduce solid waste The effect of generation, life extension, and loss of aromatics

Pending Publication Date: 2022-08-09
NINGBO ZHONGJIN PETROCHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Clay catalysts have a short lifespan and are non-renewable. They need to be replaced frequently, disrupting the continuity of industrial production, and generating a large amount of solid waste, which puts great pressure on environmental protection.

Method used

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  • Catalyst for deeply removing olefin in aromatic hydrocarbon and preparation method thereof
  • Catalyst for deeply removing olefin in aromatic hydrocarbon and preparation method thereof

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preparation example Construction

[0033] 1. Preparation of catalysts for deep removal of olefins in aromatics

[0034] The catalyst includes 50-150% by mass of molecular sieve, 5-40% by mass of binder, 0-20% by mass of metal and / or metal oxide, and 0-10% by mass of auxiliary agent.

[0035] Wherein, the metal is one or more of hydrogenation metal and alkaline earth metal, the hydrogenation metal is platinum, palladium, rhodium, nickel, cobalt, iron, copper or molybdenum, and the alkaline earth metal is beryllium, magnesium, calcium, strontium or barium .

[0036] Molecular sieve is one or more of Y molecular sieve, MWW series molecular sieve, X molecular sieve, USY molecular sieve, SBA-15 molecular sieve, ZSM-5 molecular sieve, β molecular sieve, AIPO-5 phosphorus-aluminum molecular sieve, MWW series molecular sieve is MCM-36, MCM-49 or MCM-56 molecular sieve.

[0037] The binder is one or more of silica sol, alumina, natural clay, water glass, methyl cellulose, paraffin, starch, plastic resin, bentonite, an...

Embodiment 1

[0049] The catalyst for deep removal of olefins in aromatic hydrocarbons includes 55% mass fraction of Y molecular sieve, 15% mass fraction of MCM-36 molecular sieve, 26% mass fraction of alumina, 8% mass fraction of beryllium oxide and 1% mass fraction of molybdenum oxide, 4% mass fraction of turmeric powder.

[0050] The preparation method of above-mentioned deep removal of olefin catalyst in aromatics comprises the steps:

[0051] (1) fully mix the Y molecular sieve, MCM-36 molecular sieve, alumina and succulent powder respectively after pulverizing;

[0052] (2) mixing after adding the nitric acid solution to the above-mentioned mixture, the liquid-solid mass ratio after adding the solvent is 0.5:1, and then extrusion molding obtains a clover-shaped molding catalyst;

[0053] (3) The shaped catalyst was impregnated with 8% mass fraction of beryllium oxide and 1% mass fraction of molybdenum oxide by the equal volume method, then dried, and calcined at 500° C. for 3 hours t...

Embodiment 2

[0056] The catalyst for deep removal of olefins in aromatic hydrocarbons includes 70% mass fraction of ZSM-5 molecular sieve, 26% mass fraction of alumina, 0.2% mass fraction of platinum, 1% mass fraction of molybdenum oxide, 5% mass fraction of barium oxide, 4 % mass fraction of turmeric powder.

[0057] The preparation method of above-mentioned deep removal of olefin catalyst in aromatics comprises the steps:

[0058] (1) fully mix ZSM-5 molecular sieve, alumina and succulent powder respectively after pulverizing;

[0059] (2) mixing after adding the nitric acid solution to the above-mentioned mixture, the liquid-solid mass ratio after adding the solvent is 0.5:1, and then extrusion molding obtains a clover-shaped molding catalyst;

[0060] (3) The shaped catalyst was impregnated with 0.2% mass fraction of platinum, 1% mass fraction of molybdenum oxide and 5% mass fraction of barium oxide by the equal volume method, then dried and calcined at 400° C. for 4 hours to obtain t...

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Abstract

The invention relates to the technical field of chemical catalysts, and discloses a catalyst for deep removal of olefins in aromatic hydrocarbons and a preparation method thereof, the catalyst comprises 50-150% by mass of a molecular sieve, 5-40% by mass of a binder, 0-20% by mass of a metal and / or a metal oxide, and 0-10% by mass of an auxiliary agent; the metal is one or more of hydrogenation metal and alkaline earth metal. The catalyst is good in reaction activity, the bromine index of the product is low, and the loss of aromatic hydrocarbon is small; the service life of the catalyst is long, and compared with an existing hydrofining catalyst and an existing carclazyte catalyst, the service life of the catalyst is greatly prolonged; and the catalyst can be regenerated and reused for many times, so that the generation of solid wastes is greatly reduced, and the catalyst is environment-friendly.

Description

technical field [0001] The invention relates to the technical field of chemical catalysts, in particular to a catalyst for deep removal of olefins in aromatic hydrocarbons and a preparation method thereof. Background technique [0002] The production of aromatic hydrocarbons occupies a very important position in the petrochemical industry and represents the development level of a country's petrochemical industry. Aromatic hydrocarbon products are used in many fields such as synthetic resins, fibers, rubber, additives, fuels, medicines, pesticides, organic synthesis intermediates, special chemicals, etc., which widely affect the development of the national economy and the improvement of people's living standards. Traditional aromatics production technologies include disproportionation and transalkylation technology, C8 aromatics isomerization technology and PX separation technology. Lord, these technologies are constantly being upgraded and updated to adapt to the developmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80B01J29/48B01J29/78C10G45/54
CPCB01J29/80B01J29/48B01J29/78C10G45/54B01J29/084B01J29/70B01J2229/186C10G2300/1096C10G2400/30B01J35/23Y02P20/584
Inventor 孙晓明朱志荣赵国庆侯晓灿
Owner NINGBO ZHONGJIN PETROCHEM CO LTD
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