CO2 adsorbent based on multi-source solid waste modification and preparation method and application thereof

Abstract

The invention relates to a CO2 adsorbent based on multi-source solid waste modification as well as a preparation method and application thereof, the preparation method comprises the following steps: (1) sequentially performing dipping treatment and calcining treatment on multi-source solid waste to obtain an adsorbent; and (2) drying an oxide, mixing the dried oxide with the adsorbent in the step (1), and calcining the obtained mixture to obtain the CO2 adsorbent. The preparation method is low in cost, simple in process, environmentally friendly, free of secondary pollution and suitable for CO2 capture of high-temperature industrial flue gas; according to the present invention, the adsorption performance can be improved after the multi-source solid waste is subjected to the salt solution immersion treatment, the multi-source solid waste adsorbent is modified by using the oxide so as to improve the adsorption performance, the high temperature sintering resistance and the cyclic adsorption performance of the adsorbent, and the efficient CO2 capture and the harmless treatment of the industrial solid waste are achieved.

Description

technical field [0001] The invention belongs to the technical field of adsorbents and relates to CO 2 Capture adsorbent, specifically related to a CO based on multi-source solid waste modification 2 Adsorbent and its preparation method and application. Background technique [0002] With the rapid development of economy and society, particulate matter in the atmosphere, SO 2 , NO x and CO 2 Pollutants such as pollutants continue to increase and have a serious impact on environmental quality. Current particulate matter, SO 2 and NO x The control technology has become increasingly mature, reducing CO 2 Emissions are key to improving air quality. Adsorption is a commonly used CO 2 The capture method is widely used because of its advantages of simple process, low energy consumption, and no corrosion. [0003] CN109201007A discloses a carbon dioxide adsorbent and its preparation method and application. The adsorbent is composed of organic amine, ionic liquid and biomass ...

AI Technical Summary

Problems solved by technology

However, the raw material cost of the above two adsorbents is high, the preparation process is complicated, and the cycle adsorption capacity is weak.

[0004] With the rapid development of industry, the disposal of solid waste generated in the industrial production process has always been a difficult problem. At present, industrial solid waste is mainly stored for disposal, but the accumulation of a large amount of solid waste not only occupies land resources, but also poses safety hazards during the storage process. and environmental protection hazards, the harmless treatment of industrial solid waste is the main problem of current research

[0005] In summary, CO 2 The low-cost capture and high capture performance are still the focus of researchers, although the current research has achieved some remarkable results, but the CO 2 The capture cost and cycle adsorption performance of CO2 still need to be improved. Therefore, it is urgent to develop a CO 2 Adsorbent for efficient capture and harmless treatment of industrial solid waste

Images