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Global warming caused by the greenhouse effect is one of the major environmental problems facing humanity at present. The main reason for global warming is that greenhouse gas emissions. CO2 contribution to global warming, accounting for about 55%. Therefore, effective control of CO2 emissions is the key to the mitigation of global warming. Anthropogenic sources of CO2 in the atmosphere is the combustion of fossil fuels, accounting for about 80% of the total CO2 emissions from power plants, of which 1/3. Therefore, the power plant flue gas CO2 capture is the key to reducing greenhouse gas emissions. Research and development of CO2 capture technology to become one of the hot research field in the current environment. Through the preparation of porous material load potassium bicarbonate (KHCO3) adsorbent, combined with scanning electron microscopy (SEM), nitrogen adsorption, X-ray diffraction characterization methods, to carry out a fixed-bed adsorption experiments, the load the KHCO3 adsorption of CO2 adsorption behavior of activated carbon / zeolite / alumina The study investigated the adsorption / regeneration temperature, atmospheric conditions, air flow, cycle performance of the experimental process for future promotion and application of theoretical and experimental data. In the process of adsorbent preparation, characterization and adsorption properties of the prepared adsorbents scanning electron microscopy and nitrogen adsorption characterization, analysis showed that the carbon-based adsorbent, activated carbon hole and surface adhesion with increasing load rate more and more KHCO3, specific surface area and total pore volume downward trend, and the highest rate of load carbon-based adsorbent after 5 and 10 cycles than the surface area and total pore volume without significant changes. The molecular sieve or alumina as carrier adsorbent load rate, specific surface area and total pore volume were lower than the carbon-based adsorbent, and the adsorption capacity is poor, look at all aspects of conditions, filter out the load is the highest rate of carbon-based adsorbent for The main research object of analysis. The longer the carbon-based adsorbent influencing factors of CO2 adsorption experiments with increasing load rate, to reach the point of penetration and adsorption equilibrium. The highest load rate of carbon-based adsorbent in the adsorption temperature of 60 ° C after 3 cycles of adsorption performance significantly reduced within 45min to complete regeneration temperature of 200 ° C regeneration, the adsorbed gas flow from 150mL/min to 200mL/min adsorption system penetration time in advance for 10 min, the water vapor concentration from 10% to 16% penetration time 7min, water vapor concentration on the adsorption process is more important. In order to improve the performance of carbon-based adsorbent carbonation water steam pre-treatment experiments, the maximum load rate of carbon-based adsorbent is activated, that under the experimental conditions of this article: Add 3.5 mL of water steam pre-treatment, adsorption temperature of 60 ° C, CO28 %, H2O16% gas flow 150mL/min, regeneration temperature of 200 ° C, 99.99N, 00mL/min maximum load rate of carbon-based adsorbent to achieve efficient adsorption and regeneration, adsorption / regeneration system after 10 cycles, the adsorbent able to maintain a high level of activity. On the carbon-based adsorbent adsorption capacity, the higher the load rate, the greater the adsorption capacity and adsorption capacity after activation has been enhanced, the maximum load rate of carbon-based adsorbent adsorption capacity range of 38.28 ~ 47.19mg the average saturation adsorption amount 43.20mg / g / g between adsorption regeneration cycle, which after 10 times, the saturated adsorption amount was not significantly reduced.
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