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Method for efficiently producing low-carbon olefin from oxygen-containing compound

A technology for low-carbon olefins and compounds, which is applied in the field of high-efficiency oxygenated compounds to produce low-carbon olefins, can solve the problems of high product selectivity, low selectivity of low-carbon olefins, and low ratio of agent to alcohol, so as to reduce side reactions and improve Selectivity, yield-increasing effect

Pending Publication Date: 2021-10-19
LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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Problems solved by technology

[0012] The invention provides an efficient method for producing low-carbon olefins from oxygen-containing compounds, which is suitable for the characteristics of rapid reaction, strong heat release, low solvent-to-alcohol ratio and high product selectivity in the process of producing low-carbon olefins from oxygen-containing compounds. , to solve the problem of low selectivity of low-carbon olefins existing in the prior art

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  • Method for efficiently producing low-carbon olefin from oxygen-containing compound
  • Method for efficiently producing low-carbon olefin from oxygen-containing compound

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Embodiment Construction

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, and the specific embodiments do not limit the scope of protection claimed by the present invention.

[0050] attached figure 2 And attached figure 1 The difference is that one end of the standby stripper is connected to the lower part of the catalyst collection area of ​​the main reactor through the spent agent inlet pipe, and the other end is connected to the bottom of the reaction zone of the regenerator and the main reactor respectively through the spent agent delivery pipe.

[0051] as attached figure 1 As shown, in a schematic flow diagram of a method for producing low-carbon olefins from oxygenated compounds, a reactor 23, an auxiliary reactor 10, a regenerator 38, a three-stage cyclone separator 19 for the reactor, and a four-stage cyclone separator for the reactor are included. 17. Reactor triple recovery catalyst storage tan...

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Abstract

The invention discloses a method for efficiently producing low-carbon olefin from an oxygen-containing compound in the technical field of petrochemical engineering. Reaction raw materials are preheated by an auxiliary reactor which is connected with a main reactor in series and then directly contact a high-temperature catalyst from a regenerator through the auxiliary reactor, and reaction is rapidly carried out under the action of the catalyst. The method provided by the invention is suitable for the characteristics of rapid reaction, strong heat release, relatively low catalyst-alcohol ratio, high product selectivity and the like of a process for preparing low-carbon olefin from a oxygen-containing compound, so that the problem of relatively low selectivity of the low-carbon olefin in the prior art is solved, the advantages of the reaction are brought into play to the greatest extent, and the selectivity of the low-carbon olefin is improved.

Description

technical field [0001] The invention belongs to the technical field of olefin preparation, in particular to an efficient method for producing low-carbon olefins from oxygen-containing compounds. Background technique [0002] Light olefins (ethylene, propylene, butadiene) and light aromatics (benzene, toluene, xylene) are the basic raw materials for petrochemicals. The traditional production route of ethylene and propylene is through the cracking of naphtha, which has the disadvantage of being overly dependent on petroleum. Methanol-to-Olefin (MTO for short) is another process route for producing olefins such as ethylene and propylene from methanol. At present, the development of process technology has become mature. The industrialization of MTO technology has opened up a new process route for the production of petrochemical basic raw materials by gasification of coal or natural gas, which is conducive to changing the traditional coal chemical product structure and is an eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/08B01J8/18B01J8/24B01J8/00C07C1/20C07C11/04C07C11/06
CPCB01J8/08B01J8/1872B01J8/18B01J8/24B01J8/0055C07C1/20C07C11/04C07C11/06Y02P20/52Y02P20/584Y02P30/40Y02P30/20
Inventor 刘昱乔立功施磊昌国平张洁要洁
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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