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Reaction system and method for preparing ethylene through regeneration of super gravity solvent

A technology of high-gravity and high-gravity rectification, which is applied in the direction of catalyst regeneration/reactivation, chemical instruments and methods, hydrogenation and hydrocarbon production, etc. It can solve the problems of low reaction pressure in slurry bed, affecting catalyst activity, difficulty in heat transfer of reaction, etc. problems, to achieve the effect of stable state, large operation flexibility, and reduction of potential safety hazards

Inactive Publication Date: 2016-08-31
霍尔果斯道科特环能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a reaction system and method for producing ethylene with high-gravity solvent regeneration, so as to solve the problem of high-purity acetylene hydrogenation for ethylene production in the traditional method. , Slurry bed reaction pressure is low, the production capacity is small, and green oil accumulation, the problem of affecting the catalyst activity

Method used

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  • Reaction system and method for preparing ethylene through regeneration of super gravity solvent
  • Reaction system and method for preparing ethylene through regeneration of super gravity solvent

Examples

Experimental program
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Effect test

Embodiment 1

[0054] like figure 2 As shown, a high-gravity solvent regeneration system for producing ethylene is characterized in that the system includes a hydrogen acetylene mixing and equalizing unit 5, a hydrogenation reaction unit, a cryogenic separation unit 4, a vacuum filtration unit 7, high-temperature steam and flow Bed regeneration unit and high gravity rectification unit 8. The high-temperature steam and fluidized bed regeneration unit further includes a fluidized bed 6 and a high-temperature steam eluting device 19 . The high-temperature steam eluting device 19 is provided with a high-temperature steam inlet 20 and a high-temperature steam outlet 21. The high-temperature steam inlet 20 is used to input high-temperature steam, and the high-temperature steam outlet 21 is connected with the steam inlet of the high-pressure soft water temperature control device or the steam temperature control device.

[0055] The hydrogenation reaction unit includes a slurry bed 1, a slurry bed...

Embodiment 2

[0059] Adopt the system of embodiment 1, the technology of the ethylene making of high-gravity solvent regeneration is:

[0060] Mix the catalyst diluent aluminum oxide with a particle size of 50 mesh to 80 mesh and the acetylene hydrogenation catalyst according to the mass ratio of 2:1 to form a solid phase material, and then add it to the inside of the slurry bed and mix it with the solvent N-methyl pyrrolidone to form a slurry. Mix 20KPa, 40°C acetylene with 0.1MPa, 5°C hydrogen at a molar ratio of 1:6 through a Venturi mixer to form a mixed gas. The mixed gas enters the slurry through the internal gas distributor of the slurry bed and reacts at 130°C. After the reaction, the gas phase material is subjected to cryogenic separation to obtain the target product ethylene, and the recovered hydrogen is mixed with the raw material hydrogen. The liquid phase material is passed through the rotary drum vacuum filter to obtain solid phase material and liquid phase material. The so...

Embodiment 3

[0062] Adopt the system of embodiment 1, the technology of the ethylene making of high-gravity solvent regeneration is:

[0063] Mix the catalyst diluent perlite particles with a particle size of 100 mesh to 150 mesh and the acetylene hydrogenation catalyst at a ratio of 10:1 to form a solid phase material, and then add it to the slurry bed and mix it with the solvent N-methyl pyrrolidone to form a slurry. Mix 40KPa, 80°C acetylene with 2.2MPa, 10°C hydrogen at a molar ratio of 1:15 through a Venturi mixer to form a mixed gas. The mixed gas enters the slurry through the internal gas distributor of the slurry bed and reacts at 170°C. After the reaction, the gas phase material is subjected to cryogenic separation to obtain the target product ethylene, and the recovered hydrogen is mixed with the raw material hydrogen. The liquid phase material is passed through a belt vacuum filter to obtain solid phase material and liquid phase material. The solid phase material is first elut...

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Abstract

The invention relates to a reaction system and method for preparing ethylene through regeneration of super gravity solvent. The system comprises a hydrogen and acetylene mixing equalizing unit, a hydrogen adding reaction unit, a deep cold separation unit, a vacuum filtering unit, a high-temperature steam and fluidized bed regenerating unit and a super gravity rectifying unit. The method includes the steps of mixing acetylene and hydrogen in an equalizing mode through the hydrogen and acetylene mixing equalizing unit, introducing mixed acetylene and hydrogen into the hydrogen adding reaction unit for reaction, conducting deep cold separation on gas-phase products obtained through acetylene and hydrogen reaction through the deep cold separation unit to obtain products, namely ethylene and abundant hydrogen, sending the abundant hydrogen into the hydrogen and acetylene mixing equalizing unit, leading out slurry in a slurry state bed, conducting separation through the vacuum filtering unit to obtain a solid-phase material and a liquid-phase material, processing the solid-phase material through the high-temperature steam and fluidizing bed regenerating unit to obtain a regeneration catalyst, and processing the liquid-phase material through the super gravity rectifying unit to recover solvent. The reaction system and method have the advantages of being large in operation elasticity and high in adaptability to catalyst.

Description

technical field [0001] The present invention generally relates to a reaction system and method for producing ethylene, and in particular to a reaction system and method for producing ethylene by regenerating a high-gravity solvent. Background technique [0002] Ethylene is a major raw material in the petrochemical industry. The current preparation process is mainly through the cracking of naphtha to produce olefins and coal to olefins. In 2015, the total domestic ethylene production capacity reached about 22 million t / a. In 2020, the domestic ethylene production capacity will further increase to 32.5 million t / a. However, the domestic ethylene consumption is expected to be 48 million tons per year in 2020, and the demand will exceed productivity phenomenon. This poses a serious strategic threat to our country, which is not rich in oil reserves. Therefore, seeking another new source and process to prepare ethylene, which can replace petroleum in the field of industrial prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C5/09C07C7/00C07C7/04C07C11/04B01J38/04B01J38/06B01J38/10
CPCY02P20/584C07C5/09B01J38/04B01J38/06B01J38/10C07C7/00C07C7/04C07C11/04
Inventor 余海鹏史雪君苏二强刘周恩吴道洪
Owner 霍尔果斯道科特环能科技有限公司
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