Method for converting polycyclic aromatic hydrocarbons into monocyclic aromatic hydrocarbons

A technology for single-ring aromatics and polycyclic aromatics, applied in the field of conversion of polycyclic aromatics to single-ring aromatics, can solve the problems of low selectivity, low yield of single-ring aromatics, low conversion depth of polycyclic aromatics, etc. High speed, good technical effect, and the effect of delaying the inactivation rate
CN103121896AActive Publication Date: 2013-05-29CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2013-05-29

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Abstract

The invention relates to a method for converting polycyclic aromatic hydrocarbons into monocyclic aromatic hydrocarbons, mainly solving the problems in the prior art that the conversion level of polycyclic aromatic hydrocarbons is low, the monocyclic aromatic hydrocarbon yield and selectivity are low and the catalyst deactivation rate is high. The problems are better solved by adopting the technical scheme that polycyclic aromatic hydrocarbon mixtures and hydrogen are taken as the raw materials and are contacted with a catalyst in a fixed bend reactor to react under the conditions that the reaction temperature is 335-440 DEG C, the pressure is 4-7MPa, the weight hourly space velocity is 1-3hr<-1> and the hydrogen / hydrocarbon mole ratio is 4.0-8.0 to generate monocyclic aromatic hydrocarbon mixtures. The method can be used in the industrial production of converting heavy polycyclic aromatic hydrocarbons into monocyclic aromatic hydrocarbons.
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Description

technical field

[0001] The invention relates to a method for converting polycyclic aromatic hydrocarbons into monocyclic aromatic hydrocarbons. Background technique

[0002] In recent years, with the continuous deepening of the heavy oil in the world's oil resources, how to effectively use these heavy oil resources to meet and improve people's daily needs on the premise of meeting high standards of environmental protection has become an issue. important research topic. In heavy oil products, the annual output of heavy aromatics is increasing year by year. Except for a small part used as organic solvents, most of them are mixed into fuels. No matter from the perspective of environmental protection or economics, heavy aromatics resources have not been effectively comprehensively utilized. . The source of heavy aromatics mainly exists in the process of catalytic reforming and cracking of hydrocarbons, for example, the content of heavy condensed naphthalene aromatics in cataly...

Claims

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