Apparatus and method used for reducing CO2 by using dielectric barrier discharge plasma combined with biomass

Abstract

The invention provides an apparatus and a method used for reducing CO2 by using dielectric barrier discharge plasma combined with biomass. The invention belongs to the technical field of environmental pollution controlling. The apparatus comprises a plasma reactor. The apparatus also comprises an H2O absorption cylinder, an organic gas absorption cylinder, a pressure swing adsorption apparatus and a CO gas storage cylinder which are orderly connected to the plasma reactor. Biomass is filled in the plasma reactor; the input power and the discharge frequency of an AC power source are adjusted, and CO2 gas is reduced; mixed gas obtained through the reaction is delivered through the H2O absorption cylinder, such that H2O is removed through absorption; the mixed gas is delivered through the organic gas absorption cylinder, such that organic gas is removed through absorption; CO gas obtained through the separation process by using the pressure swing adsorption apparatus is compressed by using a compressor, and is stored in the gas storage cylinder; CO2 gas obtained through separation is resolved by using a vacuum pump, and is delivered into a gas inlet of the plasma reactor for cyclicalreduction. With the method, the CO2 reduction efficiency is high, and the reduction cost is greatly reduced. CO2 is subject to cyclical reduction, such that the cyclical utilization of carbon resource is realized.

Description

technical field [0001] The invention relates to a dielectric barrier discharge plasma combined with biomass to reduce CO 2 The device and method belong to the technical field of environmental pollution control. Background technique [0002] The greenhouse effect and global warming have become one of the global environmental problems, how to effectively reduce CO emissions 2 It is one of the environmental issues that countries pay close attention to at present. CO 2 It is not only the main greenhouse gas, but also an important resource. At present, many research teams in developed countries are working on finding the CO 2 Economical route to transformation. [0003] Due to CO 2 The direct activation of CO2 requires a large amount of energy input. In recent years, research fields such as electrochemistry, photochemistry, and plasma chemistry have tried to use unconventional reaction technologies such as high-energy fields, photons, and high-energy electrons to convert CO2...

AI Technical Summary

Problems solved by technology

[0006] In addition, currently available plasmas reduce CO 2 Most of the reduction products in the technology are relatively complex, such as H 2 +CO,CO+O 2 , HCHO+CO, etc., these gases and residual unreduced CO 2 It is difficult to achieve high-efficiency separation, which not only affects the applicability of the technology, but also is not conducive to the high value-added utilization of the reduction product

Images