Device and method for converting hydrogen and carbon dioxide into acetic acid

Abstract

The invention discloses a device and method for converting hydrogen and carbon dioxide into acetic acid. H2 and CO2 can be synthesized into methane by utilizing methanogen in an electrolytic cell; under the mediation of oxidized anthraquinone-2,6-disulfonate or / and Fe<3+>, the methane can be oxidized by electroactive anaerobic methane nutrient archaea, acetic acid, carbon dioxide, the reduced anthraquinone-2,6-disulfonate, Fe<2+> and protons can be generated; AQDSH2 or the Fe<2+> can be oxidized at the positive pole of the electrolytic cell to generate electrons; the generated electrons can bemoved to the negative pole of the electrolytic cell under the action of applied voltage to combine with the protons to form the H2; the H2 and CO2 can be synthesized into the methane through the methanogen again; and the methane can be oxidized by the electroactive anaerobic methane nutrient archaea again to generate the acetic acid. The device can synthesize the acetic acid without expensive catalysts, so that costs can be significantly reduced; and the device is low in energy consumption, so that the device has important meanings on energy saving and emission reduction and environmental governance.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of carbon dioxide, in particular to a device and method for converting hydrogen and carbon dioxide into acetic acid. Background technique [0002] Acetic acid is an important chemical product, which has a wide range of applications in life and industrial production. At present, the production methods of acetic acid mainly include aerobic fermentation, anaerobic fermentation, microbial single-carbon synthesis, methanol carbonylation, acetaldehyde oxidation and ethylene oxidation. The reaction principle of aerobic fermentation method is C 2 h 5 OH+O 2 →CH 3 COOH+H 2 O; the reaction principle of anaerobic fermentation is C 6 h 12 o 6 →3CH 3 COOH; the reaction principle of microbial single carbon synthesis method is 2CO 2 +4H 2 →CH 3 COOH+2 H 2 O, 2CO+2H 2 →CH 3 COOH; the reaction principle of methanol carbonylation method is CH 3 OH+CO→CH 3 COOH; the reaction principle o...

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Problems solved by technology

[0003] The above methods all have disadvantages such as high processing cost, need of noble metal catalyst, high energy consumption and poor environmental friendliness.

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