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Efficient compact spiral reactor for strong heat absorption/exothermic reaction coupling

An exothermic reaction and spiral technology, which is applied in the direction of chemical methods, chemical instruments and methods, chemical/physical processes, etc. to make gas react with non-granular solids, can solve the problem of uneven heating of the bed, high processing costs of the substrate, and catalysts. Problems such as high shedding rate, achieve the effect of reducing mass and heat transfer limitations, uniform and controllable temperature, reducing energy consumption and carbon emissions

Active Publication Date: 2022-08-02
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the internal hot spots, slow temperature start-up, non-uniform heating of the bed and low catalyst coating amount, high catalyst shedding rate, and substrate processing cost in the conventional fixed bed reactor in the prior art. Advanced problems, fill the gap in the application of spiral tube reactors in the field of catalysis, and provide a high-efficiency, compact and strong endothermic / exothermic reaction coupling spiral reactor

Method used

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  • Efficient compact spiral reactor for strong heat absorption/exothermic reaction coupling
  • Efficient compact spiral reactor for strong heat absorption/exothermic reaction coupling
  • Efficient compact spiral reactor for strong heat absorption/exothermic reaction coupling

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Effect test

Embodiment 1

[0045] A high-efficiency, compact, and strong endothermic / exothermic reaction coupling spiral reactor, characterized in that:

[0046] a. Design the pipe diameter, length and quantity according to the reaction type, and prepare the spiral stainless steel pipe 4;

[0047] b. Weld the spiral stainless steel pipe 4 and the flange 10 by welding method;

[0048] c. Design a fluid distribution device 2 at the front end of the porous spiral tube to achieve uniform distribution of reactants in each reaction tube;

[0049] d. The stainless steel tube 4 is filled with a reaction Φ3*5 methanol hydrogen production catalyst, and the methanol aqueous solution with a water-to-alcohol ratio of 3 is passed into the reactor through the front inlet 1, and the reaction temperature is controlled at 210 ° C and the space velocity is 2000 to carry out the reaction, and the reaction produces H 2 and CO are discharged through the lower outlet 6;

[0050] e. The outer walls of all the spiral stainles...

Embodiment 2

[0058] An efficient, compact and strong endothermic / exothermic reaction coupling spiral reactor, characterized in that it comprises the following steps:

[0059] a. Design the pipe diameter, length and quantity according to the reaction type, and prepare the spiral stainless steel pipe 4;

[0060] b. Weld the spiral stainless steel pipe 4 and the flange 10 by welding method;

[0061] c. Design a fluid distribution device 2 at the front end of the porous spiral tube to achieve uniform distribution of the reactants in each reaction tube;

[0062] d. The catalyst 3 required for the reaction first reaction is filled in the stainless steel tube 4, and the first feed gas is passed into the reactor through the front inlet 1, and after the catalyst 3 is completely reacted, it is discharged through the lower outlet 6;

[0063] e. The outer walls of all the spiral stainless steel tubes 4 and the reactor shell 9 form the second reaction chamber 5;

[0064] f. The second catalyst 11 is ...

Embodiment 3

[0071] An efficient, compact and strong endothermic / exothermic reaction coupling spiral reactor, characterized in that it comprises the following steps:

[0072] a. Design the pipe diameter, length and quantity according to the reaction type, and prepare the spiral stainless steel pipe 4;

[0073] b. Weld the spiral stainless steel pipe 4 and the flange 10 by welding method;

[0074] c. Design a fluid distribution device 2 at the front end of the porous spiral tube to achieve uniform distribution of the reactants in each reaction tube;

[0075] d. The catalyst 3 required for the reaction first reaction is filled in the stainless steel tube 4, and the first feed gas is passed into the reactor through the front inlet 1, and after the catalyst 3 is completely reacted, it is discharged through the lower outlet 6;

[0076] e. The outer walls of all the spiral stainless steel tubes 4 and the reactor shell 9 form the second reaction chamber 5;

[0077] f. The second catalyst 11 is ...

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Abstract

The invention relates to a high-efficiency compact spiral reactor for strong heat absorption / exothermic reaction coupling. A preparation method comprises the following steps: a, preparing a spiral stainless steel pipe; b, the spiral stainless steel pipe and the flange are connected in a welded mode; c, designing a fluid distribution device at the front end of the porous spiral pipe; d, filling the stainless steel tube with a first reaction catalyst, introducing a first raw material gas into the stainless steel tube through an inlet, and discharging through a lower outlet; e, the outer wall of the spiral stainless steel pipe and the reactor shell form a second reaction cavity, and the second reaction cavity is filled with a second catalyst; and f, second raw material gas is introduced into the second reaction cavity through a side inlet, heat released by catalytic combustion is quickly transferred to the catalyst through the spiral stainless steel pipe, and tail gas is discharged through a side outlet. The reaction cavities are distributed in a staggered manner, so that the reactor has the advantages of uniform catalyst heating, short response time, long catalyst mass transfer time, small volume, compact structure and the like, and has great application value in industry.

Description

technical field [0001] The invention relates to the technical field of gas-solid heterogeneous catalysis, in particular to a high-efficiency, compact, and strong endothermic / exothermic reaction coupling spiral reactor. Background technique [0002] The chemical industry is the backbone of the national economy and is closely related to our lives. As the core of chemical process enhancement, catalyst is a key technology in many industries such as energy, chemical industry, and environmental protection. Therefore, how to design and develop high-efficiency catalysts and reactors is the top priority. [0003] Most of the catalytic processes in chemical production are strongly endothermic and strongly exothermic gas-solid multiphase reactions, and the catalytic reaction is often carried out in the form of a fixed-bed reactor filled with particle catalysts. Electric heaters or fuel combustion provide continuous heat. In practical industrial applications, due to the low thermal ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/02B01J15/00
CPCB01J8/02B01J8/0285B01J15/005Y02P20/10Y02P20/52
Inventor 张莉任衍伦王强况晓刚
Owner EAST CHINA UNIV OF SCI & TECH