CN2603211Y - Low temp plasma purifier for exhausted pollutant of diesel engine - Google Patents
Low temp plasma purifier for exhausted pollutant of diesel engine Download PDFInfo
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- CN2603211Y CN2603211Y CN 02291558 CN02291558U CN2603211Y CN 2603211 Y CN2603211 Y CN 2603211Y CN 02291558 CN02291558 CN 02291558 CN 02291558 U CN02291558 U CN 02291558U CN 2603211 Y CN2603211 Y CN 2603211Y
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- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 13
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 13
- 238000000746 purification Methods 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 6
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
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- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 description 6
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Abstract
Description
所属领域：Field:
本实用新型属于一种净化装置，特别涉及一种柴油机排气污染物低温等离子体净化装置The utility model belongs to a purification device, in particular to a low-temperature plasma purification device for diesel engine exhaust pollutants
背景技术：Background technique:
目前，国内外常见的柴油机排气后处理装置只具有单一的净化功能，主要有以下四种：At present, the common diesel engine exhaust after-treatment devices at home and abroad only have a single purification function, and there are mainly the following four types:
1.氧化催化转化器(DOC)——用于降低SOF、CO和HC；这种装置对于氧化催化剂的要求较高，既要有宽的温度窗口，又应具有高选择性能，即有效氧化SOF，但不氧化SO2。1. Oxidation Catalytic Converter (DOC) - used to reduce SOF, CO and HC; this device has high requirements for oxidation catalysts, which must have a wide temperature window and high selectivity, that is, effectively oxidize SOF , but does not oxidize SO2.
2.NOx还原催化转化器——降低NOx排放；2. NOx reduction catalytic converter - reduce NOx emissions;
NOx还原催化转化器又分为选择还原催化(SCR)和NOx贮藏还原催化(NSR)。SCR技术面临着开发低温冷启动净化系统、防止还原剂NH3和HC的泄露以及装置小型化等问题。NSR面临的问题是要防止NOx吸附剂S中毒以及避免过分额外燃烧的热量导致NOx的热脱附。The NOx reduction catalytic converter is further divided into selective reduction catalytic (SCR) and NOx storage reduction catalytic (NSR). SCR technology is faced with the development of a low-temperature cold start purification system, the prevention of leakage of reducing agents NH3 and HC, and the miniaturization of the device. The problem faced by NSR is to prevent the poisoning of the NOx adsorbent S and to avoid the thermal desorption of NOx caused by excessive additional combustion heat.
3.微粒捕集器(DPF)——用降低PM排放；3. Particulate filter (DPF) - used to reduce PM emissions;
DPF实用化的关键是过滤器的再生技术。目前比较接近实用化的主要有燃烧再生法。按在过滤器内烧或是外烧，分为内烧法和外烧法两种。对于内烧法存在问题是：再生时温度梯度造成热应力，使过滤器破损；PM的组成中有若干用燃烧方法难以除去的灰分，因此需要长期对过滤器进行定期的维护。对于过滤器外燃烧方法的逆向喷气再生技术，虽然避免了在过滤体内的热应力和疲劳损坏。但是需要精心地设计气路，解决微粒的二次燃烧。也同样需要对过滤器进行定期的维护，彻底地清除再生不完全导致的过滤器内微粒和杂质的堆积。The key to the practical application of DPF is the regeneration technology of the filter. At present, there is mainly the combustion regeneration method that is relatively close to practical application. According to burning inside or outside the filter, it can be divided into two kinds: internal burning method and external burning method. There are problems with the internal combustion method: the temperature gradient during regeneration causes thermal stress, which damages the filter; there are some ash in the composition of PM that is difficult to remove by combustion, so long-term regular maintenance of the filter is required. For the reverse jet regeneration technology of the combustion method outside the filter, although the thermal stress and fatigue damage in the filter body have been avoided. However, it is necessary to carefully design the gas path to solve the secondary combustion of particles. It also requires regular maintenance of the filter to completely remove the accumulation of particles and impurities in the filter caused by incomplete regeneration.
4.四元反应催化转化器(FWC)——PM、CO、HC和NOx同时净化技术。4. Four-way reaction catalytic converter (FWC) - PM, CO, HC and NOx simultaneous purification technology.
FWC是属于前三者的综合应用技术，它能同时净化排气污染物，但是存在的不足是：对系统的的配置要求高、系统结构复杂、附属装置多、现在控制较难。需要进一步的研究完善。FWC is a comprehensive application technology belonging to the first three. It can purify exhaust pollutants at the same time, but the shortcomings are: high requirements for system configuration, complex system structure, many auxiliary devices, and now it is difficult to control. Further research is needed to improve.
发明内容：Invention content:
本实用新型的目的就在于提供一种柴油机排气污染物低温等离子体净化装置，该装置可能对柴油机有害排放物(PM、HC、CO、NOx)同时净化。The purpose of the utility model is to provide a low-temperature plasma purification device for exhaust pollutants of diesel engines, which can simultaneously purify harmful emissions (PM, HC, CO, NO x ) of diesel engines.
本实用新型的技术方案是：一种柴油机排气污染物低温等离子体净化装置，其特征在于：由高压脉冲电源、等离子体发生器和控制装置组成；控制装置的输出端与高压脉冲电源连接，高压脉冲电源与等离子体发生器连接。The technical scheme of the utility model is: a low-temperature plasma purification device for diesel engine exhaust pollutants, which is characterized in that it is composed of a high-voltage pulse power supply, a plasma generator and a control device; the output end of the control device is connected to the high-voltage pulse power supply, The high-voltage pulse power supply is connected with the plasma generator.
上述等离子发生器的内部为不锈钢棒金属电极，该电极外套石英管介质。The inside of the plasma generator is a stainless steel rod metal electrode, and the electrode is covered with a quartz tube medium.
上述控制装置中由转速和负荷传感器、电子控制单元ECU组成；转速和负荷传感器的输出端与电子控制单元的输入端连接，电子控制单元的输出端与高压脉冲电源连接。The above-mentioned control device is composed of speed and load sensors and an electronic control unit ECU; the output end of the speed and load sensor is connected to the input end of the electronic control unit, and the output end of the electronic control unit is connected to a high-voltage pulse power supply.
上述高压脉冲电源的峰值电压为0～30000V、重复频率为0Hz～50kHz可调、脉冲上升时间微秒级。The peak voltage of the above-mentioned high-voltage pulse power supply is 0-30000V, the repetition frequency is adjustable from 0Hz-50kHz, and the pulse rise time is in the order of microseconds.
本实用新型的原理是：高压脉冲电源在排气通道中利用介质阻挡放电产生高浓度的低温等离子体，然后通过等离子体中的高能物质与排气有害物(包括碳烟微粒、NOx、CO、HC等)发生一系列物理和化学反应。使有害物直接分解或氧化还原成无害的物质排出。The principle of the utility model is: the high-voltage pulse power supply uses dielectric barrier discharge to generate high-concentration low-temperature plasma in the exhaust channel, and then passes through the high-energy substances in the plasma and exhaust harmful substances (including soot particles, NOx, CO, HC, etc.) a series of physical and chemical reactions occur. Directly decompose or oxidize harmful substances into harmless substances and discharge them.
本实用新型的优点是：1、能同时对柴油机各种排气污染物进行净化；2、净化时间短、效率高，且安全可靠；3、具有选择氧化性能，不与SO2发生氧化，对燃油品质要求低；4、能对烯烃、甲苯以及醛类物质等有机物进行降解、净化，可用于天然气和代用(含氧)燃料发动机的排气净化；5、适用范围广，不仅适用于发动机排气治理，还可以用于对工业废气、水处理等应用领域；6、系统构造简单，重量和体积较小；7、电源能量消耗少，对柴油机动力性、经济性影响小；8、安装时不需要对车辆进行大的改装，易于与不同车辆匹配。The utility model has the advantages of: 1. It can purify various exhaust pollutants of diesel engines at the same time; 2. The purification time is short, the efficiency is high, and it is safe and reliable; Low quality requirements; 4. It can degrade and purify organic substances such as olefins, toluene and aldehydes, and can be used for exhaust purification of natural gas and alternative (oxygenated) fuel engines; 5. Wide application range, not only suitable for engine exhaust 6. The system structure is simple, and the weight and volume are small; 7. The power consumption is small, and the impact on the power and economy of the diesel engine is small; 8. It is not easy to install It is necessary to make major modifications to the vehicle, and it is easy to match with different vehicles.
附图说明：Description of drawings:
图1为本实用新型的结构示意图Fig. 1 is the structural representation of the utility model
图2为高压脉冲电源的电原理图Figure 2 is the electrical schematic diagram of the high voltage pulse power supply
具体实施方式：Detailed ways:
一种柴油机排气污染物低温等离子体净化装置，其特征在于：由高压脉冲电源1、等离子体发生器2和控制装置组成；控制装置5的输出端与高压脉冲电源连接，高压脉冲电源与等离子体发生器连接。上述等离子发生器的内部为不锈钢棒金属电极3，该电极外套石英管介质4。上述控制装置由转速和负荷传感器、电子控制单元ECU组成；转速和负荷传感器的输出端与电子控制单元的输入端连接，电子控制单元的输出端与高压脉冲电源连接。电子控制单元采用通用的柴油机中ECU，其内的数据采用柴油机台架试验实验数据。上述高压脉冲电源的峰值电压为0～30000V、重复频率为0Hz～50kHz可调、脉冲上升时间微秒级。A low-temperature plasma purification device for diesel engine exhaust pollutants, characterized in that: it consists of a high-voltage
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| Application Number | Priority Date | Filing Date | Title |
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| CN 02291558 CN2603211Y (en) | 2002-12-20 | 2002-12-20 | Low temp plasma purifier for exhausted pollutant of diesel engine |
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| CN 02291558 CN2603211Y (en) | 2002-12-20 | 2002-12-20 | Low temp plasma purifier for exhausted pollutant of diesel engine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219338B (en) * | 2007-09-27 | 2011-06-29 | 深圳先进技术研究院 | A low-temperature plasma automobile exhaust purification device |
| CN103147825A (en) * | 2013-02-04 | 2013-06-12 | 韩汶冀 | Automobile exhaust purifier |
| CN103362602A (en) * | 2012-03-30 | 2013-10-23 | 蔡诗敏 | Automobile exhaust purification device |
| CN103768942A (en) * | 2014-02-19 | 2014-05-07 | 大连海事大学 | A method for plasma purification of diesel engine exhaust |
| CN105275545A (en) * | 2014-05-27 | 2016-01-27 | 苏州水兴绿源生物科技有限公司 | Water-proof vehicle exhaust purifier |
| CN108798842A (en) * | 2018-04-25 | 2018-11-13 | 哈尔滨工程大学 | A kind of double fuel peculiar to vessel or natural gas engine escape methane processing unit and method |
-
2002
- 2002-12-20 CN CN 02291558 patent/CN2603211Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219338B (en) * | 2007-09-27 | 2011-06-29 | 深圳先进技术研究院 | A low-temperature plasma automobile exhaust purification device |
| CN103362602A (en) * | 2012-03-30 | 2013-10-23 | 蔡诗敏 | Automobile exhaust purification device |
| CN103362602B (en) * | 2012-03-30 | 2016-01-20 | 蔡诗敏 | Automobile exhaust gas purifying installation |
| CN103147825A (en) * | 2013-02-04 | 2013-06-12 | 韩汶冀 | Automobile exhaust purifier |
| CN103768942A (en) * | 2014-02-19 | 2014-05-07 | 大连海事大学 | A method for plasma purification of diesel engine exhaust |
| CN105275545A (en) * | 2014-05-27 | 2016-01-27 | 苏州水兴绿源生物科技有限公司 | Water-proof vehicle exhaust purifier |
| CN108798842A (en) * | 2018-04-25 | 2018-11-13 | 哈尔滨工程大学 | A kind of double fuel peculiar to vessel or natural gas engine escape methane processing unit and method |
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