CN204609983U - A kind of diesel engine EGR system can reuse desulfurization particulate filter arrangement - Google Patents
A kind of diesel engine EGR system can reuse desulfurization particulate filter arrangement Download PDFInfo
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- 238000006477 desulfuration reaction Methods 0.000 description 44
- 230000023556 desulfurization Effects 0.000 description 41
- 239000007789 gas Substances 0.000 description 26
- 238000009434 installation Methods 0.000 description 26
- 238000002955 isolation Methods 0.000 description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- 239000002184 metal Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000013618 particulate matter Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Exhaust-Gas Circulating Devices (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
本实用新型属于柴油机机内净化装置和环保技术领域，具体涉及一种柴油机EGR系统可重复利用脱硫颗粒过滤装置，包括颗粒过滤室、隔离层、脱硫室；颗粒过滤室包括进气端和安装端A；脱硫室包括出气端和安装端B，安装端A和安装端B均为敞开结构，安装端A和安装端B固定在所述隔离层上，隔离层为密集网状结构；颗粒过滤室内安装有颗粒过滤滤芯，脱硫室内安装有脱硫滤芯；进气端与EGR冷却器的出气端连接，出气端与EGR阀连接。用于过滤柴油机EGR系统中的颗粒物和SO2，防止废气中颗粒再次进入燃烧室，减少柴油机颗粒物的排放；防止EGR阀因长期的硫腐蚀而引起的EGR阀失效，造成进入气缸的废气量无法控制，引起柴油机颗粒排放物增加的现象。
The utility model belongs to the technical field of purification devices in diesel engines and environmental protection, and in particular relates to a reusable desulfurization particle filter device for a diesel engine EGR system, comprising a particle filter chamber, an isolation layer, and a desulfurization chamber; the particle filter chamber includes an air inlet end and an installation end A; The desulfurization chamber includes a gas outlet and an installation end B. The installation end A and the installation end B are both open structures, and the installation end A and the installation end B are fixed on the isolation layer, which is a dense mesh structure; the particle filter chamber A particle filter element is installed, and a desulfurization filter element is installed in the desulfurization chamber; the air inlet end is connected with the air outlet end of the EGR cooler, and the air outlet end is connected with the EGR valve. It is used to filter the particulate matter and SO 2 in the diesel engine EGR system, prevent the particulate matter in the exhaust gas from entering the combustion chamber again, and reduce the emission of diesel engine particulate matter; prevent the EGR valve from failing due to long-term sulfur corrosion, resulting in insufficient exhaust gas entering the cylinder control, the phenomenon that causes an increase in diesel particulate emissions.
Description
技术领域technical field
本实用新型专利属于柴油机机内净化装置和环保技术领域，具体涉及一种柴油机EGR系统可重复利用脱硫颗粒过滤装置。The utility model patent belongs to the technical field of diesel engine internal purification device and environmental protection, and specifically relates to a diesel engine EGR system reusable desulfurization particle filter device.
背景技术Background technique
汽车的颗粒物排放是造成雾霾的主要原因，随着国4、国5排放法规的实施，排放法规日益严格。废气再循环(EGR,Exhaust Gas Recirculation)作为降低NOx应用最广、最有效的措施。2014年我国生产的满足排放标准的轻型汽车产量达260多万辆，均采用EGR技术。2014年9月，欧6排放法规开始实施，不仅测量颗粒排放的质量，同时测量颗粒排放的数量，颗粒排放进入了计数时代。Particle emissions from automobiles are the main cause of smog. With the implementation of the National 4 and National 5 emission regulations, the emission regulations have become increasingly stringent. Exhaust Gas Recirculation (EGR, Exhaust Gas Recirculation) is the most widely used and most effective measure to reduce NOx. In 2014, the output of light vehicles meeting emission standards in my country reached more than 2.6 million, all of which used EGR technology. In September 2014, Euro 6 emission regulations came into effect, not only measuring the quality of particulate emissions, but also measuring the quantity of particulate emissions, and particulate emissions have entered the era of counting.
废气再循环(EGR)系统将柴油机的尾气部分引入气缸重新参与燃烧，降低缸内燃烧温度，有效抑制NOx的生成，柴油机EGR系统废气通入的最大比例能够达到40～50％，引入气缸中的废气含有颗粒固体物和SO2气体等有害物质。现在使用的柴油机EGR系统中均未安装颗粒过滤和脱硫装置，由EGR系统再次进入气缸的颗粒，在柴油机气缸内燃烧高温的作用下，再次形成颗粒，造成颗粒排放的增加以及细微颗粒数的增加。SO2具有较强的腐蚀性，EGR系统长时间工作后，废气中的SO2会腐蚀EGR阀，造成EGR阀的失效，导致通过EGR进入气缸的废气比例发生巨大变化，又造成柴油机排放颗粒物的增加。The exhaust gas recirculation (EGR) system introduces the exhaust gas of the diesel engine into the cylinder to participate in combustion again, reduces the combustion temperature in the cylinder, and effectively suppresses the formation of NOx. The maximum proportion of exhaust gas introduced into the diesel engine EGR system can reach 40-50%. The exhaust gas contains harmful substances such as particulate solids and SO2 gas. No particle filter and desulfurization device is installed in the diesel engine EGR system currently in use. The particles that enter the cylinder again from the EGR system will form particles again under the action of high temperature combustion in the cylinder of the diesel engine, resulting in an increase in particle emissions and an increase in the number of fine particles. . SO 2 is highly corrosive. After the EGR system works for a long time, the SO 2 in the exhaust gas will corrode the EGR valve, resulting in the failure of the EGR valve, resulting in a huge change in the proportion of exhaust gas entering the cylinder through EGR, and causing the emission of particulate matter from the diesel engine. Increase.
实用新型内容Utility model content
为解决上述技术问题，本实用新型提出了一种柴油机EGR系统可重复利用脱硫颗粒过滤装置，该装置具有成本低廉、结构小巧、安装和拆卸方便等特点。In order to solve the above technical problems, the utility model proposes a reusable desulfurization particulate filter device for diesel engine EGR system, which has the characteristics of low cost, compact structure, and convenient installation and disassembly.
本实用新型提供的一种柴油机EGR系统可重复利用脱硫颗粒过滤装置，包括颗粒过滤室、脱硫室、隔离层；所述颗粒过滤室包括进气端和安装端A；所述脱硫室包括出气端和安装端B，所述安装端A和安装端B均为敞开结构，所述安装端A和安装端B固定在所述隔离层上，所述隔离层为密集网状结构；所述颗粒过滤室内安装有颗粒过滤滤芯，所述脱硫室内安装有脱硫滤芯；所述进气端与EGR冷却器的出气端连接，所述出气端与EGR阀连接。柴油机排气管排出的部分废气，先经EGR冷却器冷却至120℃左右，后依次流经脱硫颗粒过滤装置的颗粒过滤室和脱硫室，过滤后的废气经EGR阀控制流入进气歧管，与从柴油机空气过滤器进入的新鲜空气混合后，流向柴油机的气缸中重新进行燃烧。The utility model provides a reusable desulfurization particle filter device for a diesel engine EGR system, comprising a particle filter chamber, a desulfurization chamber, and an isolation layer; the particle filter chamber includes an air inlet end and an installation end A; the desulfurization chamber includes an air outlet end and the installation end B, the installation end A and the installation end B are both open structures, the installation end A and the installation end B are fixed on the isolation layer, and the isolation layer is a dense mesh structure; the particle filter A particle filter element is installed in the chamber, and a desulfurization filter element is installed in the desulfurization chamber; the air inlet end is connected with the air outlet end of the EGR cooler, and the air outlet end is connected with the EGR valve. Part of the exhaust gas discharged from the exhaust pipe of the diesel engine is first cooled to about 120°C by the EGR cooler, and then flows through the particle filter chamber and the desulfurization chamber of the desulfurization particle filter device in sequence. The filtered exhaust gas flows into the intake manifold through the control of the EGR valve. After being mixed with fresh air from the diesel engine air filter, it flows to the cylinder of the diesel engine for recombustion.
上述方案中，所述进气端和出气端均为锥形结构，所述安装端A和安装端B均为圆柱体结构，对气体进出具有导向作用。In the above solution, both the air inlet end and the air outlet end are conical structures, and the installation end A and the installation end B are both cylindrical structures, which have a guiding effect on the entry and exit of gas.
上述方案中，还包括压力传感器A、温度传感器、压力传感器B；所述压力传感器A和温度传感器安装所述进气端处，所述压力传感器B安装在所述出气端处；所述温度传感器监测和控制颗粒过滤室的进气温度，使进气温度控制在100～150℃，若进气温度过高或者过低时，通过温度传感器的温度反应，调节EGR冷却器的冷却水流量，使进气温度控制在设定的范围之内。通过监测压力传感器A和压力传感器B两端的压力差，判断滤芯是否发生堵塞。In the above scheme, it also includes a pressure sensor A, a temperature sensor, and a pressure sensor B; the pressure sensor A and the temperature sensor are installed at the inlet end, and the pressure sensor B is installed at the outlet end; the temperature sensor Monitor and control the intake air temperature of the particle filter chamber, so that the intake air temperature is controlled at 100-150°C. If the intake air temperature is too high or too low, the cooling water flow of the EGR cooler is adjusted through the temperature response of the temperature sensor, so that The intake air temperature is controlled within the set range. By monitoring the pressure difference between pressure sensor A and pressure sensor B, it is judged whether the filter element is clogged.
上述方案中，所述安装端A和安装端B通过螺栓固定在所述隔离层上，颗粒过滤室圆柱端与脱硫室圆柱端可进行拆卸，用于颗粒过滤滤芯、脱硫滤芯的再生和更换，所述隔离层为不锈钢合金材质。In the above solution, the installation end A and the installation end B are fixed on the isolation layer by bolts, and the cylindrical end of the particle filter chamber and the cylindrical end of the desulfurization chamber can be disassembled for the regeneration and replacement of the particle filter element and the desulfurization filter element. The isolation layer is made of stainless steel alloy.
上述方案中，所述安装端A与隔离层、安装端B与隔离层均通过金属密封垫密封，能够有效防止SO2对密封垫的腐蚀，造成漏气现象。In the above solution, the installation end A and the isolation layer, and the installation end B and the isolation layer are all sealed by metal gaskets, which can effectively prevent SO2 from corroding the gaskets and causing air leakage.
上述方案中，所述颗粒过滤滤芯采用堇青石(2MgO·2Al2O3·5SiO2)材质，为圆柱形蜂窝状陶瓷结构，孔道的入口和出口为交叉密闭，呈壁流式过滤体，可以吸附废气再循环中的颗粒物。In the above scheme, the particle filter element is made of cordierite (2MgO·2Al 2 O 3 ·5SiO 2 ), which is a cylindrical honeycomb ceramic structure, and the entrance and exit of the channel are cross-closed, which is a wall-flow filter body, which can Adsorbs particulate matter in exhaust gas recirculation.
上述方案中，所述脱硫滤芯采用活性炭材质，为圆柱形蜂窝状结构。在100～150℃时，过滤SO2的效率最高，SO2与废气中的水分和少量氧气在活性炭的催化作用下生成H2SO4，并吸附在活性炭上，当活性炭吸附的H2SO4达到饱和状态时，可将脱硫颗粒过滤装置卸下来，进行脱硫滤芯的再生。In the above solution, the desulfurization filter element is made of activated carbon and has a cylindrical honeycomb structure. At 100-150°C, the efficiency of filtering SO 2 is the highest. SO 2 , moisture in the exhaust gas and a small amount of oxygen generate H 2 SO 4 under the catalysis of activated carbon, and are adsorbed on the activated carbon. When the H 2 SO 4 adsorbed by the activated carbon When the saturation state is reached, the desulfurization particulate filter device can be removed to regenerate the desulfurization filter element.
当脱硫颗粒过滤装置发生阻塞时，将脱硫颗粒过滤装置从柴油机上拆下来，从脱硫室的排气端通入温度范围为500～600℃高温的气体，并将颗粒过滤室的进气端与管道连接通入水中，吸附在活性炭中的H2SO4在高温下发生分解重新产生SO2，颗粒过滤滤芯上的颗粒会在高温下重新燃烧生成CO2，实现脱硫滤芯和颗粒过滤滤芯的重生，将产生的SO2、CO2气体经颗粒过滤室的进气端和管道通入水中，可以减少SO2对大气的污染，将再生后的脱硫颗粒过滤装置重新安装到柴油机EGR系统中，重复使用。When the desulfurization particle filter device is blocked, the desulfurization particle filter device is removed from the diesel engine, the gas with a temperature range of 500-600°C is introduced from the exhaust end of the desulfurization chamber, and the air inlet end of the particle filter chamber is connected to the The pipeline is connected to the water, and the H2SO4 adsorbed in the activated carbon decomposes at high temperature to regenerate SO2, and the particles on the particle filter element will burn again at high temperature to generate CO2 , realizing the rebirth of the desulfurization filter element and the particle filter element , pass the generated SO 2 and CO 2 gas into the water through the inlet port and pipeline of the particle filter chamber, which can reduce the pollution of SO 2 to the atmosphere, reinstall the regenerated desulfurization particle filter device into the diesel engine EGR system, repeat use.
上述方案中，所述进气端与EGR冷却器的出气端通过金属密封垫密封连接，所述出气端与EGR阀管道连接。In the above solution, the air inlet end is sealed and connected to the air outlet end of the EGR cooler through a metal gasket, and the air outlet end is connected to the EGR valve pipeline.
本实用新型的有益效果：本实用新型装置用于过滤柴油机废气再循环系统(EGR)中的颗粒物和SO2，一方面可以防止废气中的颗粒再次进入燃烧室，抑制颗粒的再次成核，减少柴油机颗粒物的排放；另一方面可以防止EGR阀因长期的硫腐蚀而引起的EGR阀失效，造成进入气缸的废气量无法控制，引起柴油机颗粒排放物增加的现象。本实用新型装置结合柴油机结构紧凑、空间利用有限等特点，具有滤芯和装置制造成本低廉、可重复利用、结构小巧、安装和拆卸方便等优点。Beneficial effects of the utility model: the device of the utility model is used for filtering particulate matter and SO 2 in the exhaust gas recirculation system (EGR) of a diesel engine. Diesel engine particle emissions; on the other hand, it can prevent the EGR valve from failing due to long-term sulfur corrosion, causing the amount of exhaust gas entering the cylinder to be uncontrollable and causing an increase in diesel engine particle emissions. The device of the utility model combines the characteristics of compact structure and limited space utilization of the diesel engine, and has the advantages of low manufacturing cost of the filter element and the device, reusability, compact structure, and convenient installation and disassembly.
附图说明Description of drawings
图1是一种柴油机EGR系统可重复利用脱硫颗粒过滤装置的结构示意图。Fig. 1 is a structural schematic diagram of a reusable desulfurization particle filter device for a diesel engine EGR system.
图2是隔离层A-A剖视图。Fig. 2 is a sectional view of the isolation layer A-A.
图3是一种柴油机EGR系统可重复利用脱硫颗粒过滤装置在柴油机上的位置示意图。Fig. 3 is a schematic diagram of the position of a reusable desulfurization particle filter device in the diesel engine EGR system on the diesel engine.
图4是一种柴油机EGR系统可重复利用脱硫颗粒过滤装置的工作过程流程图。Fig. 4 is a flow chart of the working process of a reusable desulfurization particle filter device for a diesel engine EGR system.
图中，1—颗粒过滤室；2—颗粒过滤滤芯；3—压力传感器A；4—温度传感器；5—隔离层；6—脱硫滤芯；7—脱硫室；8—压力传感器B；9—脱硫颗粒过滤装置；10—EGR冷却器；11—EGR阀；12—进气端；13—安装端A；14—安装端B；15—出气端。In the figure, 1—particle filter chamber; 2—particle filter element; 3—pressure sensor A; 4—temperature sensor; 5—isolation layer; 6—desulfurization filter element; 7—desulfurization chamber; 8—pressure sensor B; 9—desulfurization Particle filtering device; 10—EGR cooler; 11—EGR valve; 12—intake end; 13—installation end A; 14—installation end B; 15—air outlet.
具体实施方式Detailed ways
下面结合附图及具体实施例对本实用新型作进一步说明，但本实用新型的保护范围并不局限于此。The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the utility model is not limited thereto.
如图1所示，一种柴油机EGR系统可重复利用脱硫颗粒过滤装置，包括颗粒过滤室1、脱硫室7、隔离层5、压力传感器A3、温度传感器4、压力传感器B8；所述颗粒过滤室1包括进气端12和安装端A13；所述脱硫室7包括出气端15和安装端B14，所述安装端A13和安装端B14均为敞开结构，所述安装端A13和安装端B14通过螺栓固定在所述隔离层5上，所述隔离层5为不锈钢合金材质，呈密集网状结构；所述颗粒过滤室1内安装有颗粒过滤滤芯2，所述脱硫室7内安装有脱硫滤芯6；所述进气端12与EGR冷却器10的出气端连接，所述出气端15与EGR阀11连接。所述进气端12和出气端15均为锥形结构，所述安装端A13和安装端B14均为圆柱体结构。所述压力传感器A3和温度传感器4安装所述进气端12处，所述压力传感器B8安装在所述出气端15处。所述安装端A13、安装端B14与隔离层5均通过金属密封垫密封。所述颗粒过滤滤芯2采用堇青石(2MgO·2Al2O3·5SiO2)材质，为圆柱形蜂窝状陶瓷结构，孔道的入口和出口为交叉密闭，呈壁流式过滤体。所述脱硫滤芯6采用活性炭材质，为圆柱形蜂窝状结构。As shown in Figure 1, a kind of diesel engine EGR system reusable desulfurization particulate filter device, comprises particulate filter chamber 1, desulfurization chamber 7, isolation layer 5, pressure sensor A3, temperature sensor 4, pressure sensor B8; 1 includes an air inlet 12 and an installation end A13; the desulfurization chamber 7 includes an air outlet 15 and an installation end B14, the installation end A13 and the installation end B14 are both open structures, and the installation end A13 and the installation end B14 are connected by bolts Fixed on the isolation layer 5, the isolation layer 5 is made of stainless steel alloy and has a dense mesh structure; the particle filter element 2 is installed in the particle filter chamber 1, and the desulfurization filter element 6 is installed in the desulfurization chamber 7 The inlet port 12 is connected to the gas outlet port of the EGR cooler 10, and the gas outlet port 15 is connected to the EGR valve 11. Both the air inlet end 12 and the air outlet end 15 are conical structures, and the installation end A13 and the installation end B14 are both cylindrical structures. The pressure sensor A3 and the temperature sensor 4 are installed at the inlet end 12 , and the pressure sensor B8 is installed at the outlet end 15 . The installation end A13, the installation end B14 and the isolation layer 5 are all sealed by metal gaskets. The particle filter element 2 is made of cordierite (2MgO·2Al 2 O 3 ·5SiO 2 ), which is a cylindrical honeycomb ceramic structure, and the entrance and exit of the channels are cross-closed, forming a wall-flow filter body. The desulfurization filter element 6 is made of activated carbon and has a cylindrical honeycomb structure.
如图3所示，所述进气端12与EGR冷却器10的出气端通过金属密封垫密封连接，所述出气端15与EGR阀11管道连接。As shown in FIG. 3 , the air inlet end 12 is sealed and connected to the air outlet end of the EGR cooler 10 through a metal gasket, and the air outlet end 15 is connected to the EGR valve 11 in a pipeline.
如图4所示，柴油机排出的废气，部分经过EGR冷却器冷却，依次流入脱硫颗粒过滤装置9的颗粒过滤室1和脱硫室7滤除废气中的颗粒物和SO2，过滤后的废气再经管道流向EGR阀11，并通过EGR阀11开度大小控制通入柴油机气缸的废气量，参与燃烧。As shown in Figure 4, part of the exhaust gas discharged from the diesel engine is cooled by the EGR cooler, and then flows into the particle filter chamber 1 and the desulfurization chamber 7 of the desulfurization particle filter device 9 to filter the particulate matter and SO 2 in the exhaust gas, and the filtered exhaust gas passes through The pipeline flows to the EGR valve 11, and the amount of exhaust gas passed into the cylinder of the diesel engine is controlled by the opening of the EGR valve 11 to participate in combustion.
温度传感器4通过EGR冷却器10监测和控制颗粒过滤室1的进气温度，并保持在100～150℃；压力传感器A3监测颗粒过滤室1进气端的进气压力。压力传感器B8监测脱硫室7的排气压力。隔离层5连接颗粒过滤室和脱硫室的圆柱端，并用于颗粒过滤滤芯2和脱硫滤芯6的固定；此连接处还可进行拆卸，用于颗粒过滤滤芯2和脱硫滤芯6的更换；隔离层5与颗粒过滤室1和脱硫室7连接时均采用金属密封垫密封。通过压力传感器A3、压力传感器B8的压力差值，判断颗粒过滤滤芯2和脱硫滤芯6是否发生阻塞。The temperature sensor 4 monitors and controls the intake air temperature of the particulate filter chamber 1 through the EGR cooler 10 and keeps it at 100-150° C.; the pressure sensor A3 monitors the intake air pressure at the intake end of the particulate filter chamber 1 . The pressure sensor B8 monitors the exhaust pressure of the desulfurization chamber 7 . The isolation layer 5 connects the cylindrical end of the particle filter chamber and the desulfurization chamber, and is used for fixing the particle filter element 2 and the desulfurization filter element 6; this connection can also be disassembled for the replacement of the particle filter element 2 and the desulfurization filter element 6; the isolation layer 5 When connecting with the particle filter chamber 1 and the desulfurization chamber 7, metal gaskets are used for sealing. Through the pressure difference between the pressure sensor A3 and the pressure sensor B8, it is judged whether the particle filter element 2 and the desulfurization filter element 6 are blocked.
脱硫颗粒过滤装置9发生阻塞时，将其从柴油机上拆下，并从脱硫室7的出气端15通入温度范围为500～600℃高温的气体，将颗粒过室1的进气端12与管道连接通入水中，吸附在活性炭中的H2SO4在高温下发生分解重新产生SO2，颗粒过滤滤芯2上的颗粒会在高温下重新燃烧生成CO2，实现脱硫滤芯6和颗粒过滤滤芯2的再生，将产生的SO2、CO2气体经颗粒过滤室1的进气端和管道通入水中，可以减少SO2对大气的污染，将再生后的脱硫颗粒过滤装置9重新安装到柴油机EGR系统中，可实现重复使用。When the desulfurization particulate filtering device 9 is blocked, it is removed from the diesel engine, and the gas with a temperature range of 500-600°C is introduced from the outlet end 15 of the desulfurization chamber 7, and the air inlet end 12 of the particle passage chamber 1 is connected to the The pipeline is connected to the water, and the H2SO4 adsorbed in the activated carbon decomposes to regenerate SO2 at high temperature, and the particles on the particle filter element 2 will burn again at high temperature to generate CO2 , realizing the desulfurization filter element 6 and the particle filter element 2 regeneration, the generated SO 2 and CO 2 gases are passed into the water through the intake end and pipeline of the particle filter chamber 1, which can reduce the pollution of SO 2 to the atmosphere, and reinstall the regenerated desulfurization particle filter device 9 to the diesel engine In the EGR system, it can be reused.
所述实施例为本实用新型优选的实施方式，但本实用新型并不限于上述实施方式，在不背离本实用新型的实质内容的情况下，本领域技术人员能够做出的任何显而易见的改进、替换或变型均属于本实用新型的保护范围。The described embodiment is the preferred implementation of the utility model, but the utility model is not limited to the above-mentioned implementation, without departing from the essential content of the utility model, any obvious improvement, Replacement or modification all belong to the protection scope of the present utility model.
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