Using dielectric barrier discharge and rotating packed bed reactor for NOx removal

Liang, Chuang; Cai, Yong; Li, Kuan; Luo, Yong; Qian, Zhi; Chu, Guang‐Wen; Chen, Jianfeng

doi:10.1016/j.seppur.2019.116141

Cited by 20 publications

(7 citation statements)

References 57 publications

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“…The removal efficiency (η) of SO 2 and NO was calculated by formula where C out represents the concentration of SO 2 or NO at the GLAS outlet, in ppm, and C in represents the initial concentration of SO 2 or NO at the GLAS inlet, in ppm. As the flue gas is fast, NO oxidized by O 2 in the air was negligible, which aligned with the previous studies. , Each experimental condition was repeated three times, and the mean value was taken as the experimental result.…”

Section: Methodssupporting

confidence: 80%

“…As the flue gas is fast, NO oxidized by O 2 in the air was negligible, which aligned with the previous studies. 49,50 Each experimental condition was repeated three times, and the mean value was taken as the experimental result. Both the SO 2 and NO concentrations in the simulated flue gas were approximately 0−700 ppm, which were similar to the emissions from the ships.…”

Section: Purification Principlementioning

confidence: 99%

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Simultaneous Removal of SO₂ and NO from the Flue Gas of Marine Ships with a Gas Cyclone–Liquid Jet Absorption Separator

Liu

Wang

et al. 2022

Ind. Eng. Chem. Res.

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SO2 and NO emitted from marine ships have seriously polluted the regional environment. However, there is a lack of high-efficiency, small-size, and cost-effective technology with which these pollutants could be purified. Here, a gas cyclone–liquid jet absorption separator (GLAS) combined with NaClO solution was developed to remove SO2 and NO simultaneously. The high-speed gas that rotates in the GLAS forms a high-gravity field and vortex flow, and SO2 and NO were removed efficiently in a small GLAS. The effect of key operating parameters was well studied through the experiment, and the total mass transfer coefficient (K G a) was calculated. It was found that the removal efficiency increased with the absorbent flow rate and concentration, while it decreased with the gas flow rate and the initial SO2 and NO concentrations. Under the experimental conditions, the maximum removal efficiency for SO2 and NO was 99% and 93%, and the maximum K G a was 0.0559 and 0.0357 kmol·m–3·kPa–1·s–1, respectively, which were 10 times higher than that of traditional devices. Semiempirical equations were also developed to predict the mass transfer performance of desulfurization and denitrification by GLAS. The study indicates that GLAS combined with NaClO solution has great potential applications for marine ships.

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Section: Methodssupporting

confidence: 80%

Section: Purification Principlementioning

confidence: 99%

Simultaneous Removal of SO₂ and NO from the Flue Gas of Marine Ships with a Gas Cyclone–Liquid Jet Absorption Separator

Liu

Wang

et al. 2022

Ind. Eng. Chem. Res.

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“…Nitrogen oxides (NO x ), present in the environment in different forms such as NO, NO 2 , NO 3 , N 2 O, N 2 O 3 and N 2 O 4 , are the main originator of photochemical smog and acid rains and represent a serious threat to the ecological environment and human health. The principal source of NO x emissions is the combustion of fossil fuels, adopted in vehicles, incinerators, thermal power plants, etc., thus leading to a serious pollutant problem, present especially in developing countries [76].…”

Section: No X Removal Via Ntp Technologymentioning

confidence: 99%

A Review about the Recent Advances in Selected NonThermal Plasma Assisted Solid–Gas Phase Chemical Processes

et al. 2020

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Plasma science has attracted the interest of researchers in various disciplines since the 1990s. This continuously evolving field has spawned investigations into several applications, including industrial sterilization, pollution control, polymer science, food safety and biomedicine. nonthermal plasma (NTP) can promote the occurrence of chemical reactions in a lower operating temperature range, condition in which, in a conventional process, a catalyst is generally not active. The aim, when using NTP, is to selectively transfer electrical energy to the electrons, generating free radicals through collisions and promoting the desired chemical changes without spending energy in heating the system. Therefore, NTP can be used in various fields, such as NOx removal from exhaust gases, soot removal from diesel engine exhaust, volatile organic compound (VOC) decomposition, industrial applications, such as ammonia production or methanation reaction (Sabatier reaction). The combination of NTP technology with catalysts is a promising option to improve selectivity and efficiency in some chemical processes. In this review, recent advances in selected nonthermal plasma assisted solid–gas processes are introduced, and the attention was mainly focused on the use of the dielectric barrier discharge (DBD) reactors.

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“…NO x in the atmosphere can be oxidized to HNO 3 and then deposited as acid rain, which will adversely affect drinking water, soil, and biodiversity. 5 , 6 The particles produced by diesel engines can easily penetrate into the respiratory tract and affect human health. Especially the ultrafine particles ( D P < 100 nm) formed by the modern low mass emission engines are more harmful to the human body and environment.…”

Section: Introductionmentioning

confidence: 99%

Effects of Intake Components and Stratification on the Particle and Gaseous Emissions of a Diesel Engine

et al. 2022

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It is of great significance to improve the performance of diesel engines by adjusting the intake components and their distribution. In this work, various proportions of exhaust gas recirculation (EGR) gas and oxygen (O 2 ) have been introduced to the intake charge of a diesel engine and the effects of different intake components and stratification conditions on pollutant emissions, especially for particles, have been explored. The results show that the introduction of O 2 into the intake charge is beneficial to alleviate the deterioration of particles and hydrocarbon (HC) emissions caused by high EGR rates. Compared with the pure air intake condition, the introduction of moderate O 2 at high EGR rate conditions can simultaneously reduce nitrogen oxides (NO x ) and particles, when the intake oxygen content (IOC) is 0.2 and the EGR rate is 20%, the NO x and particles are reduced by 45.66% and 66.49%, respectively. It is worth noting that different intake components have a significant impact on the particle size distribution (PSD) of diesel engines. In addition, the in-cylinder O 2 concentration distribution formed by the stratified intake is advantageous for further improving the combined effect of NO x , particles and HC emissions relative to the homogeneous intake. At a condition of 0.2 IOC and 20% EGR rate, the NO x , particles, and HC emissions are about 8.8%, 14.3%, and 26% lower than that of intake components nonstratification, respectively.

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Using dielectric barrier discharge and rotating packed bed reactor for NOx removal

Cited by 20 publications

References 57 publications

Simultaneous Removal of SO₂ and NO from the Flue Gas of Marine Ships with a Gas Cyclone–Liquid Jet Absorption Separator

Simultaneous Removal of SO₂ and NO from the Flue Gas of Marine Ships with a Gas Cyclone–Liquid Jet Absorption Separator

A Review about the Recent Advances in Selected NonThermal Plasma Assisted Solid–Gas Phase Chemical Processes

Effects of Intake Components and Stratification on the Particle and Gaseous Emissions of a Diesel Engine

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Using dielectric barrier discharge and rotating packed bed reactor for NOx removal

Cited by 20 publications

References 57 publications

Simultaneous Removal of SO2 and NO from the Flue Gas of Marine Ships with a Gas Cyclone–Liquid Jet Absorption Separator

Simultaneous Removal of SO2 and NO from the Flue Gas of Marine Ships with a Gas Cyclone–Liquid Jet Absorption Separator

A Review about the Recent Advances in Selected NonThermal Plasma Assisted Solid–Gas Phase Chemical Processes

Effects of Intake Components and Stratification on the Particle and Gaseous Emissions of a Diesel Engine

Contact Info

Product

Resources

About

Simultaneous Removal of SO₂ and NO from the Flue Gas of Marine Ships with a Gas Cyclone–Liquid Jet Absorption Separator

Simultaneous Removal of SO₂ and NO from the Flue Gas of Marine Ships with a Gas Cyclone–Liquid Jet Absorption Separator