Benzene and C9 and more than that arene transalkylation method

A technology of aromatic hydrocarbon alkylation and transfer method, which is applied in chemical instruments and methods, hydrogenation to hydrocarbons, hydrocarbons, etc., can solve the problem of catalyst stability without zeolite metal modification, inability to effectively utilize heavy aromatic hydrocarbons, and unfavorable aromatic hydrocarbons. Combined device and other problems, to achieve the effect of easy industrialization, convenient operation and simple equipment
CN1443736AInactive Publication Date: 2003-09-24CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2003-09-24
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The present invention adopts benzene and C9 and higher aromatic hydrocarbons as raw material for reaction, in the fixed bed reactor and under the condition of hydrogenation uses the composition formed from zeolite in which the silicon-aluminium ratio is 3-500 and alumina as catalyst, on the zeolite metal molybdenum or / and its oxide and non-forced-added at least one metal selected from Fe, Co, Ni,Cr, W, Bi, La, Zr and Ag or / and oxide are loaded, under the conditions of that reaction temp. is 300-600 deg.C, pressure is 1.0-6.0 MPa, hydrogen and hydrocarbon mole ratio of 1-15 and weight space velocity WHSV is 0.5-5.0 hr.(-1) makes the above-mentioned materials produce reaction to produce methylbenzene and C8 aromatics.
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Description

technical field

[0001] The invention relates to a method for transalkylation of benzene, carbon nine and above aromatic hydrocarbons. Specifically, through benzene (Ben) and carbon nine and above aromatics (C 9 + The transalkylation reaction of A) generates toluene (Tol) and carbon eight aromatic hydrocarbons (C8A), supplying toluene selective disproportionation unit and C 8 A isomerization unit, used to increase the production of p-xylene. Background technique

[0002] P-xylene is one of the main basic organic raw materials in the petrochemical industry. It is widely used in many chemical production fields such as chemical fibers, synthetic resins, pesticides, medicines, and plastics. The typical production method of paraxylene (pX) is through multi-stage cryogenic crystallization separation or molecular sieve simulated moving bed adsorption separation (referred to as Adsorption separation) technology to separate p-xylene from the isomer ...

Claims

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