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Hydrocarbon catalytic conversion method of productive butene

A catalytic conversion method and technology for hydrocarbons, which are applied in the fields of hydrocarbon cracking to produce hydrocarbons, treatment of hydrocarbon oil, organic chemistry, etc., can solve the problems of low butene yield, etc., and achieve the effects of high butene yield and high process flexibility.

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a method for the catalytic conversion of hydrocarbons that produces more butenes in order to overcome the problem of lower butene yields in the prior art

Method used

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  • Hydrocarbon catalytic conversion method of productive butene
  • Hydrocarbon catalytic conversion method of productive butene
  • Hydrocarbon catalytic conversion method of productive butene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] The cracking catalyst used in this embodiment is: based on the total weight of the cracking catalyst, the cracking catalyst used contains 10% by weight of beta zeolite, 20% by weight of ZSM-5 zeolite (the ratio of silicon to aluminum is 40), 45% by weight of Kaolin and 25% by weight of alumina binder, wherein the beta zeolite contains 1% by weight of iron and 1.5% by weight of phosphorus in terms of elements. The cracking catalyst is aged for 10 hours at 800°C and 100% water vapor atmosphere, and the catalyst loading in the device (system catalyst storage) is 60 kg.

[0087] The first hydrocarbon raw material (its properties are shown in Table 1) is introduced into the riser reactor 1, and after being contacted with the hot catalyst from the regenerator 7, the reaction oil gas is separated from the catalyst, and the separated coke catalyst is introduced into the stripper 6. After being stripped, it is transported to the regenerator 7 for regeneration, and the reaction o...

Embodiment 2

[0089] The process and the cracking catalyst used in this example are the same as those in Example 1, except that the weight ratio of the unborn cracking catalyst introduced into the fluidized bed reactor 2 to the regenerated cracking catalyst is 90:10.

Embodiment 3

[0102] The flow process of this embodiment is the same as that of Example 1. The difference is that the cracking catalyst used is: based on the total weight of the cracking catalyst, the cracking catalyst used contains 15% by weight of zeolite beta, 15% by weight of ZSM-5 zeolite (silicon Aluminum ratio is 40), 45% by weight of kaolin and 25% by weight of alumina binder, wherein, zeolite beta contains 1% by weight of iron and 1.5% by weight of phosphorus in terms of elements; and, reaction conditions and reaction results See Table 4.

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Abstract

The invention relates to a hydrocarbon catalytic conversion method of productive butene. The method comprises steps as follows: a first hydrocarbon raw material and a regenerative cracking catalyst are contacted in a first reactor and have a catalytic cracking reaction, a first carbon deposit catalyst and a first reaction product are obtained through separation; a second hydrocarbon raw material and a spent cracking catalyst are contacted in a second reactor and have a catalytic cracking reaction; oil gas produced in the second reactor is contacted with a third hydrocarbon raw material and a cracking catalyst and has a catalytic cracking reaction; a reaction mixture produced in a third reactor is introduced to a fourth reactor and continuously has a reaction, and a second carbon deposit catalyst and a second reaction product are obtained through separation; the cracking catalyst adopts a cracking catalyst containing modified beta zeolite, and the modified beta zeolite adopts phosphorus and transition metal M modified beta zeolite. With adoption of the method, higher butene yield and propylene yield can be obtained.

Description

technical field [0001] The invention relates to a method for catalytic conversion of hydrocarbons with high butene production. Background technique [0002] Low-carbon olefins (ethylene, propylene, butene) are the most basic chemical raw materials. Among them, ethylene and propylene mainly come from steam cracking units, while butene mainly comes from catalytic cracking units. In some petrochemical enterprises, with the development of downstream deep processing, Demand for butenes has increased, requiring further mention of catalytic cracking unit low olefins, especially butenes yields. [0003] In recent years, FCC units have developed a variety of process technologies for increasing the production of low-carbon olefins, mainly including: DCC process of Sinopec Research Institute of Petrochemical Industry (RIPP), Maxofin process and Superflex process of Kellogg Brown & Root (KBR), PetroFCC process of UOP company , Lummus company's SCC process, etc. [0004] The deep catal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G55/00C07C11/08C07C11/06C07C4/06
CPCY02P20/52Y02P20/584C10G55/00C07C4/06C07C11/06C07C11/08C10G2300/1037C10G2400/20
Inventor 朱根权谢朝钢成晓洁
Owner CHINA PETROLEUM & CHEM CORP
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