Numerical simulation analysis of activated carbon injection adsorption in flue gas purification application
Journal Title: Energy Environmental Protection - Year 2023, Vol 37, Issue 6
Abstract
Sludge blending has become one of the means to transform the energy structure of coal-fired power plants. Based on the existing coal-fired flue gas system of Zhejiang Jinhua Ningneng Thermal Power Plant, this paper proposed to add activated carbon injection purification technology in the flue gas system. Based on Fluent simulation and analysis, the numerical simulation analysis of the uniformity of the spray distribution of activated carbon in the flue gas was conducted from three aspects, such as the position of the spray point of single and multiple holes, the spray angle, and the mass flow rate of the spray, and the impact and safety of the activated carbon spraying system applied in the field of flue gas treatment were analyzed. The results showed that compared with single-nozzle injection, multi-nozzle injection could make the activated carbon distribution more uniform, but the cost was higher. For single-nozzle spraying, when the location of the spraying point was at the centre of the section from the horizontal elbow to the exit of the vertical elbow, the diffusion effect was good and the activated carbon had a long retention time. The economic efficiency was the highest when the spraying angle was selected to be parallel to the flue gas flow and the mass flow rate was selected to be 10 kg/h. For multiple-nozzle spraying, the adsorption effect of the activated carbon was better when the mass flow rate was selected to be 15 kg/h, but the cost was higher. Whether it is single-nozzle injection or multi-nozzle injection, parallel flue gas flow was chosen as the angle of activated carbon injection, in which the diffusion area was relatively large, the diffusion effect of activated carbon was relatively good, and the distribution was relatively uniform in the cross-section. The application of activated carbon injection system in the field of flue gas treatment has less impact on the environment and the safety is within the controllable range.
Authors and Affiliations
YUAN Shizhen|Jinhua Ningneng Thermal Power Company Limited, China, GUO Qianqian|Institute of Energy and Power Engineering, Zhejiang University of Technology, China, LU Rufei*|Jinhua Ningneng Thermal Power Company Limited, China, DENG Kai|Institute of Energy and Power Engineering, Zhejiang University of Technology, China, CHEN Yingquan|Jinhua Ningneng Thermal Power Company Limited, China, CAO Cao|Jinhua Ningneng Thermal Power Company Limited, China, HU Yanjun*|Institute of Energy and Power Engineering, Zhejiang University of Technology, China
Keywords
Related Articles
- EP ID EP738050
- DOI 10.20078/j.eep.20230904
- Views 54
- Downloads 0
Progress in selective electrochemical reduction of nitrate into ammonia
Selective electrochemical reduction of nitrate (NO3-) into ammonia (NH_3) is critical for environmental remediation and resource recovery. This review comprehensively summarizes the recent advances in electrochemical con...
Fast catalytic pyrolysis of lignin into monocyclic aromatic hydrocarbons over in-situ generated Fe-based catalyst
This study examined the catalytic pyrolysis of kraft lignin using an in-situ generated Fe-based catalyst from iron ore. The fresh and spent catalysts were characterized by a transmission electron microscope to investigat...
Research on the performance of Cu(X)/SSZ-13 zeolite catalysts with different Cu contents for simultaneous elimination of soot and NO_x
Diesel engines have been widely applied in heavy industries such as transportation, agriculture, and construction due to their advantages of strong power and durability. However, the pollutants emitted by diesel engines,...
TiO_2/g-C_3N_4 water absorption coupled photocatalytic degradation of isopropanol exhaust gas
Isopropanol, as a typical volatile organic compound released into the atmosphere, can cause harm to the environment and human health, and the coupling of aqueous phase absorption and photocatalysis is a useful technical...
Research progresses of CO oxidation catalysts with superior SO_2 resistance
Carbon monoxide (CO) is a common air pollutant in industrial flue gas and motor vehicle exhaust, and its excessive emissions pose a serious threat to human health. Currently, catalytic oxidation technology is widely used...