CN102242656B - Exhaust purification device outside diesel engine - Google Patents

Exhaust purification device outside diesel engine Download PDF

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Publication number
CN102242656B
CN102242656B CN 201010170385 CN201010170385A CN102242656B CN 102242656 B CN102242656 B CN 102242656B CN 201010170385 CN201010170385 CN 201010170385 CN 201010170385 A CN201010170385 A CN 201010170385A CN 102242656 B CN102242656 B CN 102242656B
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catalytic
insulating layer
fine filter
housing
strainer
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CN 201010170385
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Chinese (zh)
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CN102242656A (en )
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吴伟蔚
蒋妙范
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上海工程技术大学
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Abstract

本发明涉及一种柴油发动机机外排气净化装置,柴油发动机机外排气净化装置由导热管、外壳、氨水程控电磁阀、催化粗滤器隔热层、催化粗滤器(金属)、吹洗单向阀、前端隔热层、催化器导热连接管、催化细滤侧面隔热层、催化细滤陶(金属陶)、手动吹洗尘灰排除阀、催化细滤后端隔热层构成。 The present invention relates to a diesel engine exhaust gas purification apparatus outside the machine, a diesel engine exhaust gas purification apparatus outside the machine by a heat transfer tube, a housing, solenoid valves programmed ammonia, catalytic strainer insulating layer, the catalytic strainer (metal), purged single valve, the front end of the heat insulating layer, the catalyst connection tube thermally, insulating layer side surface of catalytic fine filter, fine filter catalytic ceramic (cermet), a manual vent valve blowing ash dust collector, heat insulating rear catalytic fine filter layer. 与现有技术相比,本发明具有能减少硫的排放,提高催化和过滤装置的工作寿命和工作可靠性等优点。 Compared with the prior art, the present invention can have a reduced sulfur emissions and improve catalyst life and reliability of the filter device, etc.

Description

一种柴油发动机机外排气净化装置技术领域[0001] 本发明涉及一种车辆尾气处理装置,尤其是涉及一种柴油发动机机外排气净化装置。 BACKGROUND external apparatus for a diesel engine exhaust gas purification unit [0001] The present invention relates to a vehicle exhaust gas treatment device, in particular for a diesel engine is directed to the outer engine exhaust purification device. 背景技术[0002]目前,汽车柴油机,尤其是大型、重型柴油发动机的排放中,废气对环境的污染日益严重。 [0002] At present, automobile diesel engines, especially large, heavy-duty diesel engine emissions, air pollution of the environment is getting worse. 柴油车尾气排放中的有害污染物主要包括:烟度FSN,颗粒物PM10、氮氧化物NOx。 Diesel exhaust emissions of harmful pollutants including: smoke FSN, particulate PM10, nitrogen oxide NOx. 当前国家对汽车柴油机排出的废气作出了要求:必须达到国家规定国4 (欧4)标准,努力向国5(欧5)标准靠近。 It states that current requirements for automotive exhaust gas discharged from diesel engines: the country must meet the state 4 (Euro 4) standards, and strive (Euro 5) closer to the national standard 5. 发明内容[0003] 本发明的目的就是为了克服上述现有技术存在的缺陷而提供一种能减少硫的排放,提高催化和过滤装置的工作寿命和工作可靠性的柴油发动机机外排气净化装置。 [0003] The object of the present invention is to overcome the drawbacks existing in the prior art and provide a diesel engine exhaust gas purification device of an external unit to reduce sulfur emissions, improve catalyst life and reliability of the filter means and the work . [0004] 本发明的目的可以通过以下技术方案来实现:一种柴油发动机机外排气净化装置,其特征在于,该装置由导热管、外壳、氨水程控电磁阀、前端隔热层、催化粗滤器、催化粗滤器隔热层、吹洗单向阀、催化器导热连接管、催化细滤器、催化细滤侧面隔热层、手动吹洗尘灰排除阀、催化细滤后端隔热层构成,所述的导热管连接催化粗滤器,催化粗滤器通过催化器导热连接管连接催化细滤器,导热管、催化粗滤器和催化细滤器外设有外壳,该外壳内侧设有前端隔热层、催化粗滤器隔热层、催化细滤侧面隔热层、催化细滤后端隔热层,所述的氨水程控电磁阀设置在导热管上方的外壳上,所述的吹洗单向阀设置外壳上方,所述的手动吹洗尘灰排除阀设置在外壳下方。 [0004] The object of the present invention can be achieved by the following technical solution: A diesel engine exhaust gas purification apparatus outside the machine, characterized in that the device by a heat transfer tube, a housing, solenoid valve ammonia programmed, the front end insulating layer, the catalytic crude filters, strainers catalytic insulating layer, purge check valves, connecting tube heat conductive catalyst, catalyst fine filter, fine filter side catalytic layer insulation, blow dust collector ash manual vent valve, the rear end of the heat insulating layer catalyst composed of fine filter, the heat pipe is connected a strainer catalyst, catalytic strainer connecting pipe through a fine filter catalyst catalyzed thermal conductivity, heat transfer tubes, the fine catalytic filter and catalytic strainer outside the housing, the front end of the housing is provided with inner insulating layer, the catalytic strainer insulating layer, the heat insulating layer side surface of catalytic fine filter, the fine filter catalytic rear insulating layer, the aqueous ammonia programmed solenoid valve provided on the housing above the thermally conductive tube, said purge check valve disposed above the housing said manual valve to exclude blowing ash dust collector disposed below the housing. [0005] 所述的导热管延伸出装置外,连接发动机排气口,在发动机冷起动时能迅速传导排气热量,使装置温度快速升高,并进行保温,使排出气体在高温下延长燃烧时间,提高氧化催化的效率。 [0005] The heat pipe extends outside of the apparatus, connected to the engine exhaust, the exhaust heat can be quickly transmitted during engine cold start, a rapid rise in temperature of the apparatus, and heat, the exhaust gas is extended at a high temperature combustion time, to improve the efficiency of the oxidation catalyst. [0006] 所述的高温为500°C -600°C。 The temperature of the [0006] of 500 ° C -600 ° C. [0007] 所述的催化器导热连接管有两根,分别相对设置在催化粗滤器上下部,并与催化细滤器连接。 The [0007] catalyst is thermally connected with two tubes, respectively, in the catalyst disposed opposite upper and lower strainer portion, and is connected with the catalytic fine filter. [0008] 所述的前端隔热层设置在导热管外围的外壳内侧,所述的催化粗滤器隔热层设置在催化粗滤器与其外围的外壳之间,所述的催化细滤侧面隔热层设置在催化细滤器侧面与其外围的外壳之间,所述的催化细滤后端隔热层设置在催化细滤器后端与其外围的外壳之间。 [0008] The insulating layer provided on the front end of the heat transfer tube inner periphery of the housing, the catalytic strainer insulating layer disposed between the housing of the catalytic strainer its surroundings, the insulating layer side surface of catalytic fine filter disposed between the housing and its side catalytic periphery of the fine filter, the fine filter catalytic insulating layer disposed between the rear end of the housing and its rear end catalyst fine filter periphery. [0009] 所述的吹洗单向阀设置在催化粗滤器与催化细滤器之间的外壳上方,所述的手动吹洗尘灰排除阀与吹洗单向阀对称设置于外壳下方。 [0009] The one-way purge valve is provided above the housing between the catalyst and the catalyst fine strainer filter, the dust collector ash blown exclude manual purge valve and a check valve disposed symmetrically below the housing. [0010] 所述的催化粗滤器由金属材料制成。 [0010] The catalytic strainer made of metallic material. [0011] 所述的催化细滤器由金属陶材料制成。 [0011] The catalytic fine filter made of a metal ceramic material. [0012] 与现有技术相比,本发明用于汽车柴油发动机的废气排放净化装置由保温、氧化催化、过滤、还原催化和尘灰去除5个部分组成。 [0012] Compared with the prior art, the present invention is the exhaust emission purification device for a diesel engine of a car insulation, an oxidation catalyst, a filter, a catalytic reduction and removal of dust 5 parts. 所述保温部分由导热管、各隔热层、导热连接管组成,所述氧化催化和过滤部分由催化细滤器(金属陶)、催化粗滤器组成。 The tube of a thermally insulating part, each of the insulating layer, the thermally conductive connecting pipe, the oxidation catalyst and the filter portion of the catalytic fine filter (cermet), the catalytic composition strainer. 所述还原催化部分由氨水程控电磁阀组成,所述尘灰去除部分由手动吹洗尘灰排除阀,吹洗单向阀组成。 The catalytic partial reduction by a program-controlled solenoid valve composed of ammonia, dust removing portions of said dust collector by a manual blowing ash vent valve, a one-way purge valve. 本发明装置是使废气中颗粒延长完全燃烧过程的氧化和过滤装置,并且对氧氮混合物进行还原催化,对燃烧后的尘灰进行吹洗清除排出,优化汽车柴油机废气排放中有毒害的物质,使汽车柴油发动的机排放符合国家所规定的国4(欧4)国5(欧5)的标准。 The present invention is an apparatus in the exhaust gas particulate filter means the increase of oxidation and complete combustion process, oxygen and nitrogen mixture for catalytic reduction of dust after combustion is discharged purged clear and optimize diesel engine automobile exhaust emissions of toxic substances, the diesel-powered automobile engine emissions standard (Euro 4) State 5 (Euro 5) State 4 prescribed by the state. 附图说明[0013] 图1为本发明装置的结构示意图。 BRIEF DESCRIPTION structural diagram of the apparatus of the present invention, [0013] FIG. [0014] 其中I为导热管,2为外壳,3为氨水程控电磁阀,4为催化粗滤器隔热层,5为催化粗滤器,6为吹洗单向阀,7为前端隔热层,8为催化器导热连接管,9为催化细滤侧面隔热层,10为催化细滤器,11为手动吹洗尘灰排除阀,12为催化细滤后端隔热层。 [0014] where I is the heat transfer tubes, 2 is a housing, a solenoid valve 3 is programmed ammonia, catalytic 4 strainer insulating layer, a catalytic strainer 5, the check valve 6 is purged, the front end of the heat insulating layer 7, 8 is thermally connected to the catalyst tube, fine filter 9 is a catalytic lateral insulation layer, a catalytic fine filter 10, 11 is a manual vent valve blowing dust collector ash, fine filter 12 to the rear end of the catalytic insulating layer. 具体实施方式[0015] 下面结合附图和具体实施例对本实用新型进行详细说明。 DETAILED DESCRIPTION [0015] The following detailed description in conjunction with the accompanying drawings and specific embodiments of the present invention is carried out. [0016] 实施例[0017] 如图1所述,一种柴油发动机机外排气净化装置,该装置由导热管1、外壳2、氨水程控电磁阀3、前端隔热层7、催化粗滤器5、催化粗滤器隔热层4、吹洗单向阀6、催化器导热连接管8、催化细滤器10、催化细滤侧面隔热层9、手动吹洗尘灰排除阀11、催化细滤后端隔热层12构成,所述的导热管I连接催化粗滤器5,催化粗滤器5通过催化器导热连接管8连接催化细滤器10,催化器导热连接管8有两根,分别相对设置在催化粗滤器5上下部,并与催化细滤器10连接,导热管1、催化粗滤器5和催化细滤器10外设有外壳2,该外壳2内侧设有前端隔热层7、催化粗滤器隔热层4、催化细滤侧面隔热层9、催化细滤后端隔热层12, 其中前端隔热层7设置在导热管4外围的外壳2内侧,催化粗滤器隔热层4设置在催化粗滤器5与其外围的外壳2之间,催化细滤侧面隔热层9设置 [0016] Example [0017] As shown in FIG 1, for a diesel engine exhaust gas purification apparatus outside the machine, which means the heat transfer tube 1, housing 2, ammonia programmed solenoid valve 3, the front end of the heat insulating layer 7, the catalytic strainer 5, the catalytic strainer insulating layer 4, the purge check valve 6, the catalyst heat-conducting connection pipe 8, fine filter catalyst 10, the heat insulating layer side surface of catalytic fine filter 9, the manual valve 11 blowing dust collector negative gray, fine catalytic filter end of the insulating layer 12, the heat pipe 5 I connector catalytic prefilter, the prefilter 5 by catalytic catalytic converter 8 is connected to the connection pipe heat conductive fine filter catalyst 10, the catalyst has two heat conducting connection pipe 8, respectively, provided at opposite catalytic strainer vertical portion 5, and fine filter 10 is connected to the catalytic heat pipe 1, a catalytic strainer 5 and a catalytic fine filter 10 outside the housing 2, the housing 2 is provided inside the front end of the heat insulating layer 7, the catalytic compartment strainer thermal layer 4, insulating layer side surface of catalytic fine filter 9, the rear end catalyst was filtered off thin insulating layer 12, wherein the insulating layer 7 provided on the front end of the second inner periphery of the heat transfer tube of the housing 4, the strainer catalytic insulating layer 4 is provided on the catalytic 2 between the catalytic fine filter side insulating layer 9 is provided with peripheral strainer housing 5 催化细滤器10侧面与其外围的外壳2之间,催化细滤后端隔热层12设置在催化细滤器10后端与其外围的外壳2之间, 所述的氨水程控电磁阀3设置在导热管I上方的外壳2上,所述的吹洗单向阀6设置在催化粗滤器5与催化细滤器10之间的外壳2上方,所述的手动吹洗尘灰排除阀11设置在催化粗滤器5与催化细滤器10之间的外壳2下方,吹洗单向阀6与手动吹洗尘灰排除阀11 对称设置。 2, between the rear end of the catalytic fine filter insulating layer 12 disposed between the catalyst fine filter 10 and its rear end periphery of the housing 2, the solenoid valve 3 is programmed ammonia catalytic fine filter housing 10 is provided with peripheral side surface of the heat transfer tube 2, the blow housing above the upper housing 2 I washed the check valve 6 disposed between the catalyst 5 and the prefilter 10 of the fine filter catalyst, blowing dust collector according to the manual valve 11 is provided to exclude the ash in the catalyst strainer 5 and the lower housing 2 between the catalytic fine filter 10, the purge check valve 6 and the manual valve 11 is negative gray blowing dust collector disposed symmetrically. [0018] 所述的导热管延伸出装置外,连接发动机排气口,在发动机冷起动时能迅速传导排气热量,使装置温度快速升高,并进行保温,使排出气体在50(TC -60(TC高温下延长燃烧时间,提高氧化催化的效率。[0019] 所述的催化粗滤器由金属材料制成,如铜、铁、铝等或其合金。所述的催化细滤器由金属陶材料制成。[0020] 该装置前端部分通过导热管在冷起动时能迅速传导排气热量,使该装置温度快速升高,并进行保温,使排出气体能够在高温(500°C-600°C左右)延长燃烧时间,提高氧化催化的效率。该装置中氨水程控电磁阀能按照车速状况合理添加氨水,使氧化氮还原为氮气和水,净化排气品质,当排气尘灰积累时(汽车行驶2500公里左右),能将尘灰及时手动吹洗排除,既减少尘灰,提高催化和过滤的·质量,又能减少排气中的硫的成分,防止催化器中毒失 [0018] The heat pipe extends outside of the apparatus, connected to the engine exhaust, the exhaust heat can be quickly transmitted during engine cold start, a rapid rise in temperature of the apparatus, and insulation, the discharge gas is 50 (TC - 60 extended (high-temperature combustion at the time TC, the efficiency of the oxidation catalyst. [0019] the catalytic coarse filter made of metal material, such as copper, iron, aluminum, or an alloy thereof. the catalytic metal ceramic fine filter made of a material. [0020] the distal portion of the device through the heat transfer tube quickly during a cold start the exhaust gas heat conduction, so that the rapid increase in device temperature, and heat, so that the exhaust gas can be at a high temperature (500 ° C-600 ° extend approximately C) burn time, to improve the efficiency of the oxidation catalyst. this means that the solenoid reasonably programmed ammonia ammonia is added in accordance with the vehicle speed condition, so that the reduction of nitrogen oxides to nitrogen and water, purification of exhaust gas quality, when the exhaust gas dust accumulation ( cars about 2,500 km), capable of timely manual purge to exclude dust, both to reduce dust, and improve the catalytic filtering-quality, and reducing the sulfur content in the exhaust gas, prevents loss of catalyst poisoning 效,提高催化过滤器的工作可靠性和工作寿命,使汽车柴油发动机的排放达到国4(欧4),国5(欧5)标准,改善汽车柴油机排放污染状况,保护社会的生态环境。 Efficiency, improve the catalytic filter operational reliability and working life, the emission vehicle diesel engines meet the national 4 (Euro 4), State 5 (Euro 5) standards, improve emissions pollution in automotive diesel engine, protect the ecological environment of society.

Claims (6)

  1. 1. 一种柴油发动机机外排气净化装置,其特征在于,该装置由导热管、外壳、氨水程控电磁阀、前端隔热层、催化粗滤器、催化粗滤器隔热层、吹洗单向阀、催化器导热连接管、催化细滤器、催化细滤侧面隔热层、手动吹洗尘灰排除阀、催化细滤后端隔热层构成,所述的导热管连接催化粗滤器,催化粗滤器通过催化器导热连接管连接催化细滤器,导热管、催化粗滤器和催化细滤器外设有外壳,该外壳内侧设有前端隔热层、催化粗滤器隔热层、催化细滤侧面隔热层、催化细滤后端隔热层,所述的氨水程控电磁阀设置在导热管上方的外壳上,所述的吹洗单向阀设置外壳上方,所述的手动吹洗尘灰排除阀设置在外壳下方; 所述的催化粗滤器由金属材料制成,或者所述的催化细滤器由金属陶材料制成。 A diesel engine exhaust gas purification apparatus outside the machine, characterized in that the device by a heat transfer tube, a housing, solenoid valve ammonia programmed, the front end insulating layer, the catalytic strainer, the strainer catalytic insulating layer, one-way purge valves, connecting tube heat conductive catalyst, catalyst fine filter, fine filter catalyst lateral insulation layer, a manual vent valve blowing dust collector ash, fine filter catalyst insulating layer constituting a rear end, said heat pipe connector catalytic strainer catalytic strainers connecting pipe is thermally catalyzed by a catalytic fine filter, heat transfer tubes, the fine catalytic filter and catalytic strainer outside the housing, the front end of the housing is provided with inner insulating layer, the catalytic strainer insulating layer, the heat insulating layer side surface of catalytic fine filter catalytic fine filter rear insulating layer, the aqueous ammonia programmed solenoid valves disposed on the housing above the thermally conductive tube, said purge check valve is provided above the housing, the manual valve to exclude blowing ash dust collector disposed in the housing below; the catalytic strainer made of a metal material, or the catalytic ceramic fine filter made of a metal material.
  2. 2.根据权利要求1所述的一种柴油发动机机外排气净化装置,其特征在于,所述的导热管延伸出装置外,连接发动机排气口,在发动机冷起动时能迅速传导排气热量,使装置温度快速升高,并进行保温,使排出气体在高温下延长燃烧时间,提高氧化催化的效率。 The outer machine for a diesel engine exhaust gas purification apparatus according to claim 1, wherein the heat pipe extends outside the apparatus, connected to the engine exhaust, the exhaust gas can be quickly transmitted during engine cold start heat, so that rapid increase in device temperature, and heat, the exhaust gas is to extend the burning time at high temperature, to improve the efficiency of the oxidation catalyst.
  3. 3.根据权利要求2所述的一种柴油发动机机外排气净化装置,其特征在于,所述的高温为500°C -600°C。 A diesel engine exhaust gas purification apparatus outside the machine according to claim 2, wherein said elevated temperature is 500 ° C -600 ° C.
  4. 4.根据权利要求1所述的一种柴油发动机机外排气净化装置,其特征在于,所述的催化器导热连接管有两根,分别相对设置在催化粗滤器上下部,并与催化细滤器连接。 The outer machine for a diesel engine exhaust gas purification apparatus according to claim 1, wherein said catalyst is thermally connected with two tubes, are disposed opposite upper and lower portions in the catalytic strainer, and the catalytic fine filter connector.
  5. 5.根据权利要求1所述的一种柴油发动机机外排气净化装置,其特征在于,所述的前端隔热层设置在导热管外围的外壳内侧,所述的催化粗滤器隔热层设置在催化粗滤器与其外围的外壳之间,所述的催化细滤侧面隔热层设置在催化细滤器侧面与其外围的外壳之间,所述的催化细滤后端隔热层设置在催化细滤器后端与其外围的外壳之间。 A diesel engine exhaust gas purification apparatus outside the machine according to claim 1, wherein said insulating layer distal end disposed inside the housing periphery of the heat transfer tubes, said heat insulating layer disposed strainer catalytic catalytic strainer housing between its periphery, the catalytic fine filter disposed between the insulating layer side surface of the housing side surface of catalytic fine filter of its surroundings, the rear end of the catalytic fine filter disposed in the insulating layer thin catalytic filter between the rear end of the housing and its periphery.
  6. 6.根据权利要求1所述的一种柴油发动机机外排气净化装置,其特征在于,所述的吹洗单向阀设置在催化粗滤器与催化细滤器之间的外壳上方,所述的手动吹洗尘灰排除阀与吹洗单向阀对称设置于外壳下方。 The machine for a diesel engine according to claim 1, wherein an outer exhaust gas purification device, characterized in that said purge housing above the check valve is provided between the catalyst and the catalyst fine filter strainer, said manually blowing ash dust collector purge vent valve and a check valve disposed symmetrically below the housing.
CN 201010170385 2010-05-10 2010-05-10 Exhaust purification device outside diesel engine CN102242656B (en)

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