Corona discharge plasma reactor used for treating vehicle exhaust

A corona discharge and plasma technology, applied in exhaust devices, separation methods, dispersed particle separation, etc., can solve the problems of low energy utilization rate, uneven spatial distribution of plasma, and the need for catalyst synergy, achieving structural The effect of parameter change, easy structure parameter and wide application range

Inactive Publication Date: 2008-07-30
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These reactors also have problems such as uneven spatial distribution of plas

Method used

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  • Corona discharge plasma reactor used for treating vehicle exhaust

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Embodiment 1

[0012] As shown in Figure 1, the plasma reactor consists of an insulating shell 5 and three sets of electrodes connected in series. Each group of electrodes is arranged in a needle-hole structure, and the multi-needle electrode is a discharge electrode, which is composed of a circular multi-needle electrode plate 2 and a stainless steel needle 3; the circular porous electrode 4 is a grounding electrode. Among them, the circular multi-needle electrode plate 2 has a diameter of 70mm, and 19 stainless steel needles 3 with a length of 8mm are evenly distributed on it, and the needle diameter is 0.8mm; The holes 7 are evenly distributed on it. When assembling, the needles 3 are all opposite to the center of the hole 7, and the distance between the pinholes is 21mm. The actual vehicle exhaust is produced under the condition of normal constant speed operation of the gasoline engine model HONDA EC2500L. When working, the exhaust gas of the automobile is passed into the reactor throu...

Embodiment 2

[0014] As shown in Figure 1, the plasma reactor consists of an insulating shell 5 and three sets of electrodes connected in series. Each group of electrodes is arranged in a needle-hole structure, and the multi-needle electrode is a discharge electrode, which is composed of a circular multi-needle electrode plate 2 and a stainless steel needle 3; the circular porous electrode 4 is a grounding electrode. Among them, the circular multi-needle electrode plate 2 has a diameter of 70 mm, and 19 stainless steel needles 3 with a length of 8 mm are evenly distributed on it, and the diameter of the needles is 0.6 mm; The holes 7 are evenly distributed on it. When assembling, the needles 3 are all opposite to the center of the hole 7, and the distance between the pinholes is 17mm. The actual vehicle exhaust is produced under the condition of normal constant speed operation of the gasoline engine model HONDA EC2500L. When working, the exhaust gas of the automobile is passed into the re...

Embodiment 3

[0016] A plasma reactor consisting of an insulating shell and two sets of electrodes connected in series is used to treat automobile exhaust, and other experimental conditions are the same as in Example 1. The experimental results are shown in Table 1.

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Abstract

The invention relates to a corona discharge plasma reactor used for treating automobile exhaust, which is a device making use of a corona discharge plasma system to remove HC, NOx, CO, particles and other contaminants in automobile exhausts. The invention comprises an insulated shell and a plurality of sets of electrodes connected in series and is characterized in that each set of electrodes of the cylindrical reactor adopts spin-pore structure, spininess electrodes are discharge electrodes and round porous electrodes are ground electrodes; during assembling, the center of the spin and the pore is opposite. The invention has the advantages of high purifying efficiency for HC, NOx, CO, particles and other contaminants in automobile exhausts, small volume of the reactor, easy alteration of the configuration parameter and board application scope.

Description

technical field [0001] The invention is a device for removing pollutants such as hydrocarbons (HC), nitrogen oxides (NOx), carbon monoxide (CO) and particles in automobile tail gas by using a corona discharge plasma system. Background technique [0002] Cars usually use traditional hydrocarbon fuels, and the exhaust gas composition is very complex, which contains nitrogen oxides (NOx), hydrocarbons (HC), carbon monoxide (CO) and other gaseous pollutants and inhalable particulate matter that are more polluting to the environment. Therefore, the exhaust gas emitted by automobiles burning gasoline and diesel oil not only pollutes the environment, but also causes serious harm to the human body, which has attracted widespread attention and attention. At present, the technologies for controlling vehicle exhaust emissions mainly include: pre-treatment technology, in-machine purification technology and out-of-machine purification technology. The pre-treatment technology mainly incl...

Claims

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Application Information

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IPC IPC(8): B01D53/92B01D53/76F01N3/08
Inventor 储金宇吴春笃陈志刚赵如金张波
Owner JIANGSU UNIV
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