Towards ideal NO/sub x/ control technology using a plasma-chemical hybrid process

Yamamoto, Toshiaki; Okubo, Masaaki; Hayakawa, K.; Kitaura, Koichi

doi:10.1109/28.952526

Cited by 81 publications

(23 citation statements)

References 9 publications

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“…For the same removal efficiency, it is better to have a lower specific energy density, regarding energy consumption [19]. Some researchers have also employed DBD with catalyst or adsorbent in order to increase NOx removal efficiency [20][21][22][23][24]. Although encouraging results have been obtained, more improvement is still required for the practical applications.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the optimization of dielectric barrier discharge reactor for NO<inf>x</inf>treatment

Talebizadeh

Rahimzadeh

Anaghizi

et al. 2016

IEEE Trans. Dielect. Electr. Insul.

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In this paper, a comprehensive study of a DBD reactor is conducted to investigate the optimum operating conditions of the reactor for NOx treatment. For each parameter, the objective is to find the maximum NOx removal efficiency with the minimum consumed power. Different effective parameters of the reactor i.e. electrode length and diameter, electrode and dielectric materials as well as parameters of power generator, i.e. voltage and frequency, are investigated. The results show that for this configuration, the electrode with 20 cm length and 10 mm diameter has the best performance. Aluminum as the inside electrode material and quartz as the dielectric material are selected. Furthermore, the optimum value for the pulse frequency is 16.6 kHz. For the mentioned optimum conditions, the NOx removal efficiency achieved is equal to almost 82% at the input power of 486 W. Furthermore, the highest achieved NOx removal is almost 92% at the input power of 864 W. The results of this paper can be used to reduce the energy consumption of NTP systems to acceptable levels.

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Section: Introductionmentioning

confidence: 99%

Experimental study on the optimization of dielectric barrier discharge reactor for NO<inf>x</inf>treatment

Talebizadeh

Rahimzadeh

Anaghizi

et al. 2016

IEEE Trans. Dielect. Electr. Insul.

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“…1 is used for removal of NOx in the diesel engine exhaust. As reported in previous papers (27), (28) , this reactor could oxidize NO to NO 2 with high efficiency. It consists of a 1.5 mm diameter wire electrode and a Pyrex glass tube (20 mm inner diameter and 24 mm outer diameter) as dielectric barrier around which the copper screen is wrapped as the other electrode.…”

Section: Plasma Reactor and High Voltage Power Suppliesmentioning

confidence: 67%

“…A barrier-type packed-bed plasma reactor (27), (28) shown in Fig. 1 is used for removal of NOx in the diesel engine exhaust.…”

Section: Plasma Reactor and High Voltage Power Suppliesmentioning

confidence: 99%

“…This method was applied to a simulated exhaust gas of the electric power plants and factories, and it was succeeded to remove 100 % NOx. Further, the cost of Na 2 SO 3 supply, aftertreatment method and the operating cost of the chemical reactor were discussed in our previous papers (27) - (31) and it was evaluated that the total cost is less than 1/4 in the conventional technology.…”

Section: Introductionmentioning

confidence: 99%

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Diesel Engine Emission Control Using Pulsed Corona Plasma-Wet Chemical Hybrid Process

Okubo

Kuroki

Kitaura

et al. 2006

JEE

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The plasma-wet chemical hybrid process for NOx removal from the flue gas emissions is extremely effective and economical in comparison with the conventional selective catalytic reduction system. A series of experiments using the plasma-wet chemical hybrid system are performed to control NOx from the diesel engine emission. The operation characteristics and optimum operation for plasma and chemical reactors are investigated in regard to reaction products such as N 2 O, CO, CO 2 , HNO 3 and NO 3 -as well as NOx removal efficiency using the pulsed corona and barrier type packed-bed plasma reactors. The oxidation from NO to NO 2 without reducing NOx concentration (i.e., minimum reaction byproducts) and with least power consumption is the key for the optimum reactor design. The produced NO 2 is totally converted to N 2 and Na 2 SO 4 with Na 2 SO 3 scrubbing. The hybrid reactors followed by the chemical reactor achieved extremely low operating cost and around 90 % NOx removal efficiency with small amount of byproducts.

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“…Much research work has been carried out in many countries, such as U.S.A. (Carpenter, 2013), in Asia (Japan (Yamamoto et al, 2001), China (Zhang et al, 2014) and Korea (Mok, 2006)) and also in Europe (Poland (Krzyżyńska and Hutson, 2012) and Denmark (Stamate et al, 2006)). Much effort was devoted to the selection of an appropriate oxidant (Nelo et al, 1997), of which the most effective proved to be ozone (Jaroszyńska-Wolińska, 2009;Nelo et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Influence of Oxidizing Reactor on Flue Gas Denitrification by Ozonation and Possibility of by-Product Separation

Kordylewski

Hałat

Łuszkiewicz

2017

Chemical and Process Engineering

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Results of laboratory scale research have been presented on the effects of an oxidizing reactor on ozone consumption and by-producs composition and separation of simultaneous NOx and SO2 removal from a carrier gas by ozonation method and absorption in an alkaline solution. The additional Dreschel washer added before two washers containing 100 ml of 0.1 molar NaOH solution played the role of an oxidation reactor. Its effect was investigated using an empty (dry or wetted) or filled with packing elements washer. The measured by-products in a scrubber and in the oxidizing reactor were SO3 2-, SO4 2-, NO2 -and NO3 -ions, respectively. It has been shown that use of oxidizing reactor improves NOx removal efficiency reducing ozone consumption. Wetting of the oxidation reactor with water enables a preliminary separation of sulphur and nitrogen species between the oxidizing reactor and an alkaline absorber. Application of packing elements in the oxidizing reactor allows to retain 90% of nitrogen compounds in it. Some results were confirmed by tests in pilot scale.

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Towards ideal NO/sub x/ control technology using a plasma-chemical hybrid process

Cited by 81 publications

References 9 publications

Experimental study on the optimization of dielectric barrier discharge reactor for NO<inf>x</inf>treatment

Experimental study on the optimization of dielectric barrier discharge reactor for NO<inf>x</inf>treatment

Diesel Engine Emission Control Using Pulsed Corona Plasma-Wet Chemical Hybrid Process

Influence of Oxidizing Reactor on Flue Gas Denitrification by Ozonation and Possibility of by-Product Separation

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