Efficient method for 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 low selectivity of low-carbon olefins and low ratio of agent to alcohol, etc., so as to improve the selectivity of low-carbon olefins and improve the selectivity , the effect of reducing the occurrence of unintended reactions

Pending Publication Date: 2020-11-03
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 in the prior art, maximize the advantages of the reaction, and improve the selectivity of low-carbon olefins

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  • Efficient method for producing low-carbon olefin from oxygen-containing compound

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specific Embodiment 1

[0052] as attached figure 1 As shown, in the present invention a kind of high-efficient oxygenated compound produces the method for light olefin, comprises reactor 23, regenerator 38, reactor three-stage cyclone separator 19, reactor four-stage cyclone separator 17, reactor three The recovery catalyst storage tank 16, the standby stripper 32, the regenerative stripper 45, the heat extractor 29 outside the main reaction zone and the heat extractor 42 outside the regenerator. The reactor 23 includes a main reaction zone 7 , an auxiliary reaction zone 10 and a catalyst collection zone 13 , the main reaction zone 7 of the reactor is located below the catalyst collection zone 13 , and the auxiliary reaction zone 10 is located above the main reaction zone 7 . The main reaction zone 7 is connected to the catalyst collection zone 13 through a dilute-phase pipe 24. The top of the dilute-phase pipe 24 is provided with a catalyst rapid separation device 12, and the outlet of the catalyst...

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Abstract

The invention discloses an efficient method for producing low-carbon olefin from an oxygen-containing compound in the technical field of petrochemical engineering, which comprises the following steps:preheating a reaction raw material in an auxiliary reaction zone and introducing the preheated reaction raw material into the auxiliary reaction zone through a feeding distributor at the bottom of the auxiliary reaction zone, so that the reaction raw material directly contacts with a high-temperature catalyst from a regenerator, and quickly reacts under the action of the catalyst. The method disclosed by the invention is suitable for the characteristics of rapid reaction, strong heat release, relatively low agent-alcohol ratio, high product selectivity and the like of a process for preparingthe low-carbon olefin from the 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, and in particular relates to an efficient method and device 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C1/20C07C5/333C07C11/04C07C11/06
CPCC07C1/20C07C5/333C07C11/04C07C11/06Y02P20/52Y02P20/584Y02P30/20Y02P30/40
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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