Multi-reaction-area combination type reactor

A technology with multiple reaction zones and reactors, applied in chemical instruments and methods, hydrocarbon production from oxygen-containing organic compounds, organic chemistry, etc., can solve the problems of low ethylene propylene yield and low selectivity, etc.

Active Publication Date: 2008-04-23
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

[0011] The technical problem to be solved by the present invention is the low yield and low selectivity of the target product ethylene propylene in the process of using a fluidized bed reactor in the production of ethylene propylene from methanol or dimethyl ether in the prior literature, and a new multi-reaction zone combined reactor

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  • Multi-reaction-area combination type reactor

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Embodiment 1

[0021] use figure 1The multi-reaction zone combined reactor, wherein the vertical distance between the raw material inlet B15 and the bottom of the first riser reactor 4 is 1 / 20 of the height of the first riser reactor 4 . The inner diameter of the first riser reactor 4 is 1 / 4 of the inner diameter of the fluidized bed reactor 3 , and the height of the first riser reactor 4 is 5 times the height of the fluidized bed reactor 3 . The height of the first riser reactor 4 is 0.8 times the height of the second riser reactor. The vertical height of the connecting port between the regeneration inclined pipe 16 and the fluidized bed reactor 3 from the bottom of the fluidized bed reactor 3 is 1 / 10 of the vertical height of the fluidized bed reactor 3 . The vertical distance from the bottom of the regenerator 11 between the connecting port of the inclined pipe 13 to be produced and the regenerator 11 is 1 / 20 of the vertical height of the regenerator 11 . Using SAPO-34 molecular sieve a...

Embodiment 2

[0023] use figure 1 The multi-reaction zone combined reactor, wherein the vertical distance between the raw material inlet B15 and the bottom of the first riser reactor 4 is 1 / 25 of the height of the first riser reactor 4 . The inner diameter of the first riser reactor 4 is 1 / 4 of the inner diameter of the fluidized bed reactor 3 , and the height of the first riser reactor 4 is 5 times the height of the fluidized bed reactor 3 . The height of the first riser reactor 4 is 0.8 times the height of the second riser reactor. The vertical height of the connecting port between the regeneration inclined pipe 16 and the fluidized bed reactor 3 from the bottom of the fluidized bed reactor 3 is 1 / 12 of the vertical height of the fluidized bed reactor 3 . The vertical distance from the bottom of the regenerator 11 between the connecting port of the inclined pipe 13 to be produced and the regenerator 11 is 1 / 20 of the vertical height of the regenerator 11 . Using SAPO-34 molecular sieve ...

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Abstract

The present invention relates to a multiple reaction zone combined reactor, mainly for solving the technical problem existed in previous technique of that in methyl alcohol or dimethyl ether catalytic reaction process the selectivity of ethylene and propylene is low and their yield rate also is low. Said invention utilizes adoption of a technical scheme which is characterized by adopting multi-stage type or dynamically-zoned type reactor and relay use of catalyst, and firstly making catalyst activity regulation in the fluidized bed reactor before effective reaction of regeneration catalyst so as to better solve said problem. Said invention can be used in industrial production of ethylene and propylene.

Description

technical field [0001] The present invention relates to a multi-reaction zone combined reactor, in particular to the multi-reaction of using fluidized bed reactors connected in series with double riser reactors to realize efficient catalytic conversion of oxygen-containing compounds such as methanol or dimethyl ether into ethylene and propylene zone combined reactor. Background technique [0002] Petrochemical industry is an important pillar industry in the national economy. It provides a large amount of chemical raw materials for industry, agriculture, transportation and national defense. It is one of the most relevant and leading industrial sectors in the national economy. Propylene and ethylene are the two most important basic raw materials for modern petrochemical industry. [0003] The bulk downstream products of ethylene mainly include polyethylene, ethylene oxide, ethylene glycol, polyvinyl chloride, styrene, vinyl acetate, etc. The size of ethylene production is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/24C07C1/20C07C11/02
CPCY02P20/584Y02P30/20Y02P30/40
Inventor 刘俊涛张惠明钟思青齐国祯
Owner CHINA PETROLEUM & CHEM CORP
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