Research progress on treatment technology of greenhouse gas tetrafluoromethane
Journal Title: Energy Environmental Protection - Year 2023, Vol 37, Issue 2
Abstract
Tetrafluoromethane (CF_4) is one of the typical non-carbon dioxide gases with super strong greenhouse effects, legally regulated by Kyoto Protocol. CF_4 emissions continue to increase with the continuous expansion of industrial activities such as aluminum electrolysis and semiconductor, resulting in the aggravation of global climate change and deterioration of environment on which human survival depends, as well as the hindering of the sustainable development of related industries. Intensifying the control of non-carbon dioxide greenhouse gases such as CF_4 is an important part of China's "carbon peaking and carbon neutrality goals" strategic objectives with the implementation of the action plan. Firstly, the sources of CF_4 are analyzed systematically, and the main industry sources, emission characteristics and generation mechanism of CF_4 are expounded in this paper. Then, the limitation of source emission reduction of CF_4 and the inevitable trend of pipe-end treatment are emphatically analyzed after summarizing the status of source emission reduction measures of CF_4. As for the end treatment of CF_4, seven pipe-end treatment technologies, including deep-cooling separation, adsorption, membrane separation, thermal combustion, thermal catalytic decomposition, plasma high-energy decomposition and electrocatalytic decomposition, are summarized from the perspective of physical and chemical treatment. Meanwhile, the basic principles, application cases and development status of relevant methods are described. Some parameters such as temperature, decomposition product, energy consumption, as well as the advantages and disadvantages of each technology are compared and analyzed. In the final, the future challenges of CF_4 pipe-end treatment technology are predicted and evaluated based on the industry requirements and application scenarios.
Authors and Affiliations
ZHU Yelin|School of Metallurgy and Environment, Central South University, China, ZHENG Xie|School of Metallurgy and Environment, Central South University, China, CHEN Shijie|School of Metallurgy and Environment, Central South University, China, LIU Wanning|School of Metallurgy and Environment, Central South University, China, Ayman Abdallah Ahmed Ismail|School of Metallurgy and Environment, Central South University, China, SHEN Fenghua|School of Metallurgy and Environment, Central South University, China, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, China, XIANG Kaisong|School of Metallurgy and Environment, Central South University, China, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, China, LIU Hui*|School of Metallurgy and Environment, Central South University, China, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, China
Keywords
Related Articles
- EP ID EP737833
- DOI 10.20078/j.eep.20230215
- Views 36
- Downloads 0
Study progress on the synergistic catalytic removal of nitrogen oxides and volatile organic compounds
Coupling NH_3-SCR denitration and VOCs purification in flue gas treatment of typical industries such as waste incineration and steel smelting, developing multi-pollutants synergistic control theory and technology to coll...
Experimental study on VOCs adsorption by Zr-MOFs synthesized with different ligands
Zirconium-based MOFs adsorbent materials with different ligands, including: UIO - 66, UIO-66-NH_2, UIO-66-NDC and UIO-67 were hydrothermally synthesized using terephthalic acid as the base ligand and functionalized funct...
Recent advances in the research on the poisoning mechanisms and anti-poisoning methods of alkali (earth) metal for denitrification catalysts
As a by-product of many combustion processes, NO_x has long affected the environment and human health. In order to reduce NO_x emissions at the source, selective catalytic reduction (SCR) denitrification technology has b...
Study on NO formation characteristics and ammonia-nitrogen conversion behavior during ammonia-coal co-firing
Experiments were conducted on a laboratory drop tube furnace for the single-firing of ammonia and coal, as well as co-firing, combined with numerical simulations to investigate the NO formation characteristics, intermedi...
Investigation on thermoelectric cooling system for battery pack of electrical vehicle
In order to promote the safety of the power battery pack in high-temperature environments for electrical vehicles, a thermoelectric cooling system was designed and tested. This system utilized a self-developed pin fin as...