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Intelligent reaction system and process for synthesizing dimethyl carbonate through liquid-phase oxidative carbonylation of methanol

A technology of liquid-phase oxidation of dimethyl carbonate, which is applied in the fields of carbon monoxide and oxygen preparation, chemical/physical/physical-chemical reactors, chemical/physical/physical-chemical processes, etc., can solve the problems of low system reaction efficiency and achieve improvement Effects of reaction efficiency, mass transfer enhancement, and guaranteed reaction rate

Inactive Publication Date: 2021-03-12
NANJING YANCHANG REACTION TECH RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] For this reason, the present invention provides an intelligent reaction system and process for synthesizing dimethyl carbonate by methanol liquid-phase oxidative carbonylation, to overcome the problem of low system reaction efficiency caused by inhomogeneous mixing between materials and by-products in the prior art

Method used

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  • Intelligent reaction system and process for synthesizing dimethyl carbonate through liquid-phase oxidative carbonylation of methanol
  • Intelligent reaction system and process for synthesizing dimethyl carbonate through liquid-phase oxidative carbonylation of methanol

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Experimental program
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Effect test

Embodiment 1

[0098] Methanol liquid phase oxide synthesis of dimethyl carbonate is carbonate using the above system and process.

[0099] Catalysts in the process are polyvinylpyridine load chloride catalysts;

[0100] The feed molar ratio of oxygen and carbon monoxide is 7: 9, and the liquid phase methanol is 0.6h. -1 ;

[0101] In the process, the reaction tower reaction temperature is 100 ° C, and the reaction pressure is 1 MPa;

[0102] The first micro-interface generator inner gas ratio is 700: 1, and the second micro interface generator is 300: 1.

Embodiment 2

[0104] Methanol liquid phase oxide synthesis of dimethyl carbonate is carbonate using the above system and process.

[0105] Catalysts in the process are polyvinylpyridine load chloride catalysts;

[0106] The feed molar ratio of oxygen and carbon monoxide is 7: 9.3, and the liquid phase methanol is 0.65 h. -1 ;

[0107] In the process, the reaction tower reaction temperature is 108 ° C, and the reaction pressure is 1.1 MPa;

[0108] The first micro-interface generator inner gas ratio is 740: 1, the second micro interface generator inner gas ratio is 360: 1.

Embodiment 3

[0110] Methanol liquid phase oxide synthesis of dimethyl carbonate is carbonate using the above system and process.

[0111] Catalysts in the process are polyvinylpyridine load chloride catalysts;

[0112] The feed molar ratio of oxygen and carbon monoxide is 7.5: 9, and the liquid phase methanol is 0.67 h. -1 ;

[0113] In the process, the reaction tower reaction temperature is 116 ° C, and the reaction pressure is 1.2 MPa;

[0114] The first micro-interface generator inner gas ratio is 780: 1, the second micro interface generator inner gas ratio is 420: 1.

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Abstract

The invention relates to an intelligent reaction system and process for synthesizing dimethyl carbonate through liquid-phase oxidative carbonylation of methanol. The intelligent reaction system comprises a reaction tower, a buffer tank, micro-interface generators and an intelligent control unit. Oxygen and carbon monoxide are crushed to form micron-scale bubbles, so the reaction rate of oxygen andcarbon monoxide with liquid-phase methanol is increased; meanwhile, a gas-liquid emulsion is conveyed back to a reaction area through a second micro-interface generator for opposite impacting with agas-liquid emulsion output by a first micro-interface generator, and therefore, the retention time of the micron-scale bubbles in the reaction area is prolonged, gas and liquid phases are subjected toa secondary reaction, and the conversion rate of liquid-phase methanol is increased; and through the intelligent control unit, a worker can know the real-time situation of all data sent back by an intelligent sensing module at any time through a mobile device, and the inner temperature and the inner pressure of the whole reaction tower can be accurately controlled by changing preset values, so reaction efficiency is further improved.

Description

Technical field [0001] The present invention relates to a methanol-carbonyl biochemical method, and more particularly to an intelligent reaction system and process of methanol liquid-phase oxidized carbonylation synthetic acid carbonate. Background technique [0002] Dimethyl carbonate (DMC) is an important organic reaction intermediate and low toxic environmentally friendly chemical raw materials containing a carbon group, methoxy, methyl group, and the excellent properties of DMC and a special molecular structure. Decided that the extensive use of DMC, can be used instead of the poisonous photomigrant or dimethyl sulphate or the like as a carbon-based reaction and methylation reaction, and has excellent dissolution performance. The green solvent integrating cleaner and safety is in production, which has the characteristics of safe, convenient, contaminated, easy transportation, etc., is an environmentally friendly chemical raw material that meets the modern "cleaning process", ...

Claims

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Application Information

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IPC IPC(8): B01J8/00B01J8/08B01J19/00C07C68/01C07C69/96
CPCB01J8/001B01J8/005B01J8/082B01J19/0093
Inventor 张志炳周政张锋李磊孟为民王宝荣杨高东罗华勋杨国强田洪舟
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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