Gas-liquid reaction device as well as use method and application thereof

A gas-liquid reaction and reaction tube technology, applied in chemical methods, chemical instruments and methods, chemical/physical/physical-chemical stationary reactors for reacting liquids and gaseous media, etc., can solve the problems of phase interface transfer and slow reaction , small heat exchange area, high local temperature problems, to achieve the effect of fast and efficient mixing reaction, large contact area and less material inventory

Pending Publication Date: 2021-06-18
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The market demand for tetrahydrophthalic anhydride is increasing at an annual rate of 15%, but there are no large-scale manufacturers of tetrahydrophthalic anhydride in my country
Under the action of mechanical stirring, butadiene gas is cut into millimeter-scale bubbles, with small specific surface area, phase interface transfer, slow reaction, and long reaction time
The synthesis reaction of tetrahydrophthalic anhydride is an exothermic reaction. The heat exchange area of ​​the reactor is small, and there is a phenomenon of high local temperature. The problem of heat transfer limits the efficiency of the reaction.

Method used

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  • Gas-liquid reaction device as well as use method and application thereof
  • Gas-liquid reaction device as well as use method and application thereof
  • Gas-liquid reaction device as well as use method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] This embodiment provides a gas-liquid reaction device based on a gas-liquid reaction device provided in a specific embodiment, wherein:

[0092] The reaction pipes 18 are connected in series, along the flow direction of the reaction liquid, the discharge pipe 3 of the gas dispersion module 19 is connected to the feed port 11 of the first reaction pipe 18, and the discharge port 12 of the first reaction pipe 18 is connected to the next The feed port 11 of the reaction pipe 18, according to this connection mode, each reaction pipe 18 is connected in series along the flow direction of the reaction liquid, and the reaction liquid discharged through the gas dispersion module 19 is passed into the first reaction pipe 18 through the discharge pipe 3, and then sequentially Flow through the annular channel 9 of each reaction tube 18 .

[0093] The microporous membrane module 1 is surrounded by a microporous membrane, the membrane material of the microporous membrane is high mole...

Embodiment 2

[0096] Adopt the gas-liquid reaction device that embodiment 1 provides to synthesize tetrahydrophthalic anhydride, and synthetic method specifically comprises the following steps:

[0097] (1) Benzene and maleic anhydride are mixed according to the mass ratio of 0.1:1 to obtain maleic anhydride solution, butadiene gas and maleic anhydride solution are respectively passed in the gas dispersion module 19, butadiene gas and maleic anhydride The mol ratio of the maleic anhydride in the butenedioic anhydride solution is 1:1;

[0098] After the butadiene gas enters the gas dispersion module 19, it passes through the microporous membrane assembly 1 at a linear speed of 0.1m / s to form microbubbles and diffuses into the maleic anhydride solution to obtain a reaction solution;

[0099] (2) The reaction liquid flows into the annular channel 9 of the reaction pipe fitting 18 at a linear velocity of 0.05m / s, and at the same time, the heat exchange medium is passed into the inner pipe body ...

Embodiment 3

[0102] This embodiment provides a gas-liquid reaction device based on a gas-liquid reaction device provided in a specific embodiment, wherein:

[0103] When the reaction pipe fittings 18 are connected in parallel, the inlet and outlet ends of the reaction pipe fittings 18 are connected to the feed main pipe and the discharge pipe respectively, and the discharge pipe 3 of the gas dispersion module 19 is connected to the feed main pipe. The ports 11 are respectively connected to the feed main pipes, and the reaction liquid discharged through the gas dispersion module 19 is passed through the discharge pipe 3 into the feed main pipes, and distributed into the annular channels 9 of the reaction pipes 18 .

[0104]The microporous membrane module 1 is surrounded by a microporous membrane, the membrane material of the microporous membrane is ceramics, and the pore diameter of the microporous membrane is 10 μm. The microporous membrane module 1 is an inverted truncated cone structure,...

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Abstract

The invention provides a gas-liquid reaction device as well as a use method and application thereof. The gas-liquid reaction device comprises a shell, a gas dispersion module and at least two reaction pipe fittings are arranged in the shell, and the reaction pipe fittings are connected in parallel or sequentially connected in series along the flow direction of reaction liquid. The reaction device designed by the invention is simple in structure, large in gas-liquid two-phase contact area, free of a mechanical stirring part and not easy to leak, and has the performances that: the reaction temperature is accurately controlled, the mass transfer and heat transfer performance is good, the adjustable range of the reaction pressure is large, the reaction time is adjustable, the stock of materials in the reaction process is small, the safety is high, continuous production can be achieved, and the adaptability is wide.

Description

technical field [0001] The invention belongs to the technical field of gas-liquid reaction, and in particular relates to a gas-liquid reaction device, its use method and application. Background technique [0002] Tetrahydrophthalic anhydride, as a derivative of maleic anhydride, is widely used in resin curing agents, electronics, high-end polyester coatings, green plasticizers, pharmaceuticals and pesticides and other fields. The cured product formed by tetrahydrophthalic anhydride derivatives and epoxy resin is an ideal packaging material, which is widely used in the packaging of basic electronic components such as resistors, capacitors, inductors, diodes, and triodes to complex devices such as semiconductor devices and integrated circuits. As an important chemical intermediate, the domestic demand for this product has been increasing in recent years. [0003] The market demand for tetrahydrophthalic anhydride is increasing at an annual rate of 15%, but there are no large-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/24B01J10/00C07D307/89
CPCB01J10/00B01J19/0053B01J19/24B01J19/2415C07D307/89
Inventor 周志茂
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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