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Reaction device and method for capturing carbon dioxide and preparing formic acid through hydrogenation and application

A carbon dioxide and reaction device technology, applied in the field of carbon dioxide capture and hydrogenation formic acid reaction device, can solve the problems of unfavorable large-scale amplification, easy loss of catalyst, poor reaction continuity, etc., to maximize gas-liquid-solid mass transfer efficiency, reduce Amplification effect and low energy consumption

Active Publication Date: 2022-03-25
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing through CO 2 Carbon dioxide is captured in the process of hydrogenation of formic acid, but the homogeneous catalytic system generally has problems such as poor reaction continuity, easy loss of catalyst, and difficulty in product separation, which do not have the potential for large-scale application
Moreover, the reaction process is mainly carried out through the tank reactor, the mass transfer effect is relatively poor, which is not conducive to large-scale amplification, and it is not coupled with the carbon dioxide capture process.

Method used

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  • Reaction device and method for capturing carbon dioxide and preparing formic acid through hydrogenation and application
  • Reaction device and method for capturing carbon dioxide and preparing formic acid through hydrogenation and application
  • Reaction device and method for capturing carbon dioxide and preparing formic acid through hydrogenation and application

Examples

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Effect test

Embodiment 1-6

[0052] Examples 1-6 use the carbon dioxide capture and hydrogenation formic acid reaction device provided by the present invention to carry out carbon dioxide capture and hydrogenation reactions in a discontinuous manner, and investigate the capture and hydrogenation performance of different types of organic amine solutions for carbon dioxide. The reactor Such as figure 1 shown. The specific parameters of the reactor are: the diameter of the reaction tube is 1 cm, the length is 20 cm, the aperture of the gas distributor is 15 μm, and the material is glass. The specific operation process is as follows: Weigh a certain mass of catalyst, place it in a reaction tube, then add 5 mL of an aqueous solution of organic amine with a concentration of 2 mol / L, the reaction temperature is room temperature, and the reaction pressure is 1 atmosphere, and then through the bottom of the reactor. Air was introduced to capture carbon dioxide, and after adsorption was saturated, pure hydrogen wa...

Embodiment 7-8

[0056] Examples 7-8 use the carbon dioxide capture and hydrogenation formic acid reaction device provided by the present invention to react in a discontinuous manner to investigate the performance of different concentrations of carbon dioxide capture and hydrogenation reactions. The reactor is such as figure 1 shown. The specific parameters of the reactor are: the diameter of the reaction tube is 1 cm, the length is 20 cm, the aperture of the gas distributor is 15 μm, and the material is glass. The specific operation process is as follows: Weigh a certain mass of catalyst, place it in a reaction tube, then add 5 mL of an aqueous solution of organic amine with a concentration of 2 mol / L, the reaction temperature is room temperature, and the reaction pressure is 1 atmosphere, and then through the bottom of the reactor. Add a certain concentration of carbon dioxide gas for carbon dioxide capture, after the adsorption is saturated, pass pure hydrogen gas for hydrogenation reaction...

Embodiment 9

[0060] Example 9 is to use the carbon dioxide capture and hydrogenation reaction device for producing formic acid provided by the present invention, adopting a continuous method of fluidizing the reaction medium to catalyze the direct reaction of carbon dioxide and hydrogen gas mixture to generate formic acid at normal temperature and pressure. The reactor is compared with that of Example 1 -8 Expanded 100 times, carbon dioxide capture and hydrogenation formic acid reaction device such as figure 2 shown. The specific parameters of the reactor are that the diameter of the reaction tube is 5 cm, the length is 1 m, and the aperture of the gas distributor is 30 μm. The reaction medium is circulated by using a peristaltic pump to add a certain amount of fresh alkali solution to the reaction system in real time to the lower end of the reaction tube, and at the same time draw the reacted solution from the top of the reaction tube. Adopt the following operating conditions: normal te...

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Abstract

The invention relates to a reaction device and method for capturing carbon dioxide and preparing formic acid through hydrogenation and application. Comprising a reactor, the reactor is of a cylindrical tubular structure, a gas distributor is arranged at the bottom of the reactor, the reactor is filled with a reaction medium, and the reaction medium is located above the gas distributor; and a feed gas inlet is arranged at the bottom of the reactor and below the gas distributor. Compared with a traditional tank reactor, the reactor has the advantages of high mass transfer efficiency, mild operation conditions, continuity, modularization and the like.

Description

technical field [0001] The invention belongs to the technical field of energy and chemical industry, and in particular relates to a carbon dioxide capture and hydrogenation formic acid reaction device and method. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The average concentration of carbon dioxide in the atmosphere has exceeded 410ppm. The existing direct air capture technology (Direct Air Capture, DAC) captures carbon dioxide to solve the excessive emission of carbon dioxide. Capturing carbon dioxide and further converting it into useful chemicals or fuels can reduce the total cost but still requires harsh reaction conditions such as high temperature and high press...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/62B01D53/78B01J19/24C07C51/00C07C53/02
CPCB01D53/62B01D53/78B01J19/2415C07C51/00B01D2257/504C07C53/02Y02C20/40Y02P20/151
Inventor 邓伟侨任国庆翟盛良姜淑超
Owner SHANDONG UNIV
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