scholarly journals Application of Non-Thermal Plasma for NOx Reduction in the Flue Gases

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3955 ◽  
Author(s):  
Paulauskas ◽  
Jõgi ◽  
Striūgas ◽  
Martuzevičius ◽  
Erme ◽  
...  
Keyword(s):  
Flue Gas ◽  
Thermal Plasma ◽  
Nox Reduction ◽  
Flue Gases ◽  
Pollutant Emissions ◽  
Ozone Treatment ◽  
Small Scale ◽  
Gas Treatment ◽  
Non Thermal Plasma ◽  
Combustion Systems

Over the years, ever more stringent requirements on the pollutant emissions, especially NOX, from combustion systems burning natural gas are introduced by the European Union (EU). Among all NOX reduction methods, the flue gas treatment by plasma is widely applied and could be used for both small scale and domestic combustion systems. However, the removal efficiency depends on concentrations of oxygen, water vapor, traces of hydrocarbons, and nitrogen oxides in flue gas. In order to analyze the application of the NOX reduction for small-scale or domestic combustion systems, experiments of NOX reduction by non-thermal plasma from real flue gases originating from premixed methane combustion at different equivalence ratio (ER) values were performed. It was determined that the residual oxygen in flue gas plays an important role for improvement of NO to NO2 oxidation efficiency when O2 concentrations are equal to or higher than 6%. The power consumption for the plasma oxidation constituted approximately 1% of the burner power. In the case of ozone treatment, the addition of O3 to flue gas showed even more promising results as NO formed during combustion was fully oxidized to NO2 at all ER values.

scholarly journals The Prototype of Non-thermal Plasma After treatment System for Simultaneous Reduction of Nitrogen Oxide Emission in Flue Gas

2021 ◽  
Vol 302 ◽  
pp. 01010
Author(s):  
Dararat Laohalertdecha ◽  
Kampanart Theinnoi ◽  
Sak Sittichompoo
Keyword(s):  
Nitrogen Oxides ◽  
Nitrogen Oxide ◽  
Flue Gas ◽  
Thermal Plasma ◽  
Power Plants ◽  
Gas Flow ◽  
Nox Reduction ◽  
Combustion Process ◽  
Operating Conditions ◽  
Non Thermal Plasma

Nowadays, global warming is the main environmental problems all over the world. The air pollutants mainly from the burning of fossil fuels and coal in power plants, transportation, and automobiles. There are release major point emission of the atmosphere. The nitrogen oxides are the most relevant for air pollution that contribute to the formation of photochemical smog and acid rain. Numerous methods have been studied to eliminate the nitrogen oxides such as the use low-nitrogen fuels technology, the selective catalytic reduction (SCR), wet scrubbing. The aim of this research is investigated non-thermal plasma (NTP) techniques offer an innovation to eliminate both nitrogen oxide (NOx) and soot emissions from combustion. This study is used to selectively transfer input electrical energy to electrons without expending this in heating the entire gas flow which creates free radicals in the flue gases. The simulated flue gas from combustion process is applied to the system. The results showed that the prototype of nonthermal plasma system is shown the highly efficient of NOx removal was achieved. However, the optimised of NTP operating conditions are required to enhance the NOx reduction activities.

Oxidation of Elemental Mercury with Non-Thermal Plasma Coupled with Photocatalyst

2012 ◽  
Vol 15 (2) ◽  
Author(s):  
Hongmin Yang ◽  
Wenhui Hou ◽  
Hairu Zhang ◽  
Leiyu Zhou
Keyword(s):  
Gas Phase ◽  
Flue Gas ◽  
Thermal Plasma ◽  
Elemental Mercury ◽  
Mercury Species ◽  
Non Thermal Plasma

AbstractA promising approach has been developed to oxidize and remove elemental mercury species from coal-fired flue gas. The oxidation of gas-phase elemental mercury (Hg

Development Prospects of Non-Thermal Plasma Technology Used in the Thermal Power Plants in China

2009 ◽  
Author(s):  
Bao-Ming Sun ◽  
Shui-e Yin ◽  
Xu-Dong Gao
Keyword(s):  
Power Plant ◽  
Flue Gas ◽  
Thermal Plasma ◽  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Plasma Technology ◽  
Integration Technology ◽  
Non Thermal Plasma ◽  
Thermal Plasma Technology

This paper mainly seeks to explore and answer some questions for desulfurization and denitration in thermal power plants in China. Firstly, the desulfurization and denitration technology applicated in the power plant in China at present were analyzed. It is considered that taken combination of the existed technique for purified the pollutants from the thermal power plants, not only lead to the wastage of huge amount of investment, increasing of operating costs, decreasing of the economic benefits, but also add an additional area. It is necessary to develop the integration technology of desulfurization and denitration simultaneously. Secondly the integration technology of desulfurization and denitration at present in China was briefly reviewed such as activated carbon adsorption, SNRB, etc. and most of those at a research stage include the plasma technology. In the third of the paper, the non-thermal plasma technology i.e electron-beam technique, corona discharge and dielectric barrier discharge were discussed. Finally, combined with the actual situation in China, the application prospects of the desulfurization and denitration technology using plasma discharge in the flue gas was bring up. The article also pointed out the barriers need to be overcome if the technology will be applied in power plant, as well as the development direction of desulfurization and denitration technology from flue gas in power plant in China.

Non-thermal plasma-assisted NOx reduction over alkali and alkaline earth ion exchanged Y, FAU zeolites

2004 ◽  
Vol 89 (1-2) ◽  
pp. 135-141 ◽  
Author(s):  
Ja Hun Kwak ◽  
János Szanyi ◽  
Charles H.F Peden
Keyword(s):  
Thermal Plasma ◽  
Alkaline Earth ◽  
Nox Reduction ◽  
Non Thermal Plasma

Lean NOx Reduction in Two Stages: Non-thermal Plasma Followed by Heterogeneous Catalysis

2000 ◽  
Author(s):  
Russell Tonkyn ◽  
Steven Yoon ◽  
S.E. Barlow ◽  
Alexander Panov ◽  
Ana Kolwaite ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Thermal Plasma ◽  
Nox Reduction ◽  
Lean Nox Reduction ◽  
Lean Nox ◽  
Non Thermal Plasma ◽  
Two Stages

Experimental Study on NO Removal Using Non-thermal Plasma Oxidation-alkali Absorption

2015 ◽  
Vol 18 (1) ◽  
Author(s):  
Shuilan Ding ◽  
Qi Yu ◽  
Yingzhou Zhang ◽  
Yuan Liu ◽  
Chunxue Xie ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Experimental Study ◽  
Flue Gas ◽  
Thermal Plasma ◽  
Experimental System ◽  
Plasma Oxidation ◽  
No Removal ◽  
Non Thermal Plasma ◽  
Alkali Absorption ◽  
Removal System

AbstractA non-thermal plasma oxidation-alkali absorption NO removal system is designed by connecting sequentially an alkali aqueous solution absorption device to a gas discharge reactor. An experimental system of simulated flue gas NO removal using non-thermal plasma oxidation and Ca(OH)

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