CN1187778A - Catalytic purification process and device for exhaust gas from combustion system - Google Patents

Catalytic purification process and device for exhaust gas from combustion system Download PDF

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CN1187778A
CN1187778A CN 96194716 CN96194716A CN1187778A CN 1187778 A CN1187778 A CN 1187778A CN 96194716 CN96194716 CN 96194716 CN 96194716 A CN96194716 A CN 96194716A CN 1187778 A CN1187778 A CN 1187778A
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exhaust gas
catalyst
duct
conversion
apparatus
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CN 96194716
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Chinese (zh)
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雷蒙德·米勒
洛萨·霍夫曼
库尔特·沙德特
威兰·马西斯
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西门子公司
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection
    • Y02A50/20Air quality improvement or preservation
    • Y02A50/23Emission reduction or control
    • Y02A50/232Catalytic converters
    • Y02A50/2322Catalytic converters for exhaust after-treatment of internal combustion engines in vehicles
    • Y02A50/2325Selective Catalytic Reactors [SCR]

Abstract

一种用于催化净化由燃烧装置所排出的废气的方法与设备,所要净化的废气(a)被引导进入一转换与混合管道(16),使得废气(a)沿预先给定的纵轴方向(18)流过管道(16),同时向转换与混合管道(16)中的废气(a)流喷入还原剂(r),特别如稀尿素溶液。 A catalytic purification of exhaust gas discharged from a combustion apparatus method and apparatus for purifying an exhaust gas to be (a) is directed into a conversion and mixing duct (16), such that the exhaust gas (a) along a predetermined longitudinal direction, (18) through the conduit (16), while the exhaust gas (a) injecting a reductant stream (r) to the conversion and mixing duct (16), in particular as a dilute urea solution. 之后,废气(a)流转向进入一平行于转换与混合管道(16)或在外面将其包围住的反应管道(34)内,自此,废气(a)沿相反的方向(32)流动。 Thereafter, the exhaust gas (a) to flow into the converter and parallel to a mixing duct (16) or outside it surrounds the reaction duct (34), since the exhaust gas (a) flowing in the opposite direction (32). 还原催化剂(36、38)位于反应管道(34)内,废气(a)中可还原的成分在该处被还原。 Reduction catalyst (36, 38) located in the reactor conduit (34), the exhaust gas (a) may be reduced where the composition is reduced. 随后,通过这种方式净化过的废气(a′)被排出反应管道(34)。 Then, the purified exhaust gas in this manner (a ') is discharged from the reaction duct (34).

Description

用于催化净化由燃烧装置所排出的废气的方法与设备 For catalytic purification of exhaust gas discharged from a combustion apparatus and method means

本发明涉及一种用于催化净化由燃烧装置所排出的废气的方法,该燃烧装置采用固态、液态或气态燃料。 The present invention relates to a method for the catalytic purification of exhaust gas discharged from the combustion device, the combustion device uses a solid, liquid or gaseous fuel. 在此,通过喷入液态或气态的还原剂,如稀尿素溶液或气态氨,借助于雾化剂,如压缩空气,使还原剂在热的废气流中分解,将废气中有害的气态成分催化还原(主要按SCR方法)。 Here, by spraying liquid or gaseous reducing agent, such as dilute urea solution, or gaseous ammonia, by means of the atomizing agent, such as compressed air, decomposition of the reducing agent in the exhaust stream of the hot waste gases of harmful gaseous catalytic component reduction (SCR process by mainly). 另外,本发明还涉及一种用于催化净化由燃烧装置所排出的废气的设备。 Further, the present invention relates to a device for catalytic purification device discharged from a combustion exhaust gas.

尤其在采用SCR方法时,本发明可应用于发动机与燃烧设备的废气的催化净化,例如柴油机、柴油 汽油(双燃料)发动机、采用稀薄燃烧方式的汽油机、使用石油、煤气、木材和其它燃料的锅炉以及燃汽轮机,它们例如可用来带动发电机、压缩机、载重卡车、作功机械、船舶和火车机车,或者用来产生热、蒸汽和热水。 Especially when using the SCR process, the present invention can be applied to an engine with a catalytic exhaust gas combustion devices purification, such as diesel, diesel fuel (dual fuel) engine using gasoline lean-burn mode, petroleum, gas, wood and other fuels boilers and gas turbines, for example, they can be used to drive generators, compressors, truck, work machine, locomotives and ships, or to generate heat, steam and hot water.

对本文开头所述形式的、用于净化由燃烧装置所排出的废气的方法和设备,已经由EP-B10558452,特别是图1所公开。 To the beginning of this article in the form of, for purifying exhaust gas discharged from the combustion apparatus method and apparatus have the EP-B10558452, particularly as disclosed in FIG. 所公开的这种设备包括一个具有三个彼此平行布置的管道或腔室的壳体。 Such a device is disclosed comprising a housing arranged parallel to each other in three duct or chamber having. 在称作热解管道的第一根管道的首端与位于一侧所需净化热废气的输入管相连通,在首端大约中心处的位置,有一个双元雾化喷嘴,将反应剂,如稀尿素溶液和雾化剂,如压力超过大气压1bar的压缩空气输送给该双元雾化喷嘴。 In the pyrolysis of conduits referred to as first conduit and the head end inlet tube located on one side of the hot exhaust gas purifying desired communicates, at a position approximately at the center of the head end, a binary spray nozzle, the reactant, the atomizing agent and dilute urea solution, such as a pressure exceeding the atmospheric pressure is supplied to the compressed air 1bar binary atomizing nozzle. 尿素溶液和压缩空气在热解管道的纵向方向上形成一个气溶胶类型的喷射锥。 Urea solution and air to form a type of aerosol spray cone in the longitudinal direction of the pyrolysis pipe. 在此,尿素可以完全转化或分解为纯的氨和二氧化碳。 In this case, the urea can be completely transformed or decomposed into pure ammonia and carbon dioxide. 带有氨和二氧化碳的废气流在热解管道的次端转入平行布置的,称作混合管道的第二根管道,并且在那儿沿反方向流动,而且流过一些普通结构形式的交叉流动混合器。 An exhaust gas with ammonia and carbon dioxide in the secondary flow pipe into the end of the pyrolysis arranged in parallel, referred to as second mixing duct of conduits and the flow there in the reverse direction, and the cross-flow stream through the mixing of some common structure device. 这时,与业已分解的反应剂均匀而强烈地混合的废气流,紧接着流入平行布置的、称作反应管道的第三根管道。 In this case, decomposition of the reactant with the already mixed uniformly and strongly the exhaust gas stream, followed flows arranged in parallel, a third pipeline called the reaction of conduits. 在此,废气流首先通过两个彼此有一定间距的还原催化剂。 Here, there are two exhaust gas stream first through the reduction catalyst at a distance from one another. 特别是SCR催化剂(SCR=可选择性催化还原),然后再选择通过一个同样间隔设置的、几何形状相同的氧化催化剂。 In particular SCR catalyst (SCR = optional catalytic reduction), and then selected by a same set of equally spaced, geometry of the oxidation catalyst. 还原催化剂与可能存在的氧化催化剂均呈蜂窝状结构并配备有纵向延伸的管道。 It showed a reduction catalyst and an oxidation catalyst may be present in the honeycomb structure and is provided with a longitudinally extending conduit. 从即时起,消除了所有气态有害物的废气流随后进入热交换器,或通过排出口,例如烟囱或排气口排出。 From this time, it eliminates all harmful gaseous exhaust stream then enters the heat exchanger, or through the discharge port, for example, a chimney or vent discharge.

所公开的这种用于净化废气的设备,由于三个管道平行布置而相当紧凑,然而值得追求的是,对于多种应用场合,在效率相同的情况下,结构还需更为紧凑,因为尤其在汽车中,可供使用的空间十分有限。 The disclosed apparatus for purifying an exhaust gas of this, since the three pipes arranged in parallel and relatively compact, but It is desirable for a variety of applications, at the same efficiency, the need is more compact structure, in particular because in automobiles, the space available is very limited.

DE-A14203807公开了一种具有中心对称结构的废气净化系统,然而没有提供气流偏转装置。 DE-A14203807 discloses an exhaust gas purification system having a centrosymmetric structure without, however, providing an airflow deflecting device. 这种系统相对较长,因而不能应用于例如所有类型的汽车,在此更需要结构更紧凑的型式。 This system is relatively long, and therefore can not be applied to all types of automobiles, for example, this need more compact type.

因而,本发明的目的在于,在使本文开头所述类型的方法与设备保持工作效率不变的情况下,还具有使结构更加紧凑的可能性。 Accordingly, an object of the present invention, so that at the beginning of the type described herein methods and apparatus for maintaining the efficiency of the same situation, but also has the potential to make the structure more compact.

本发明基于经试验所证实的知识,即第一根和第二根管道在一定的边界条件下,在功能上可联合成一单一管道,也就是联合成一根组合的转换与混合管道,这就是说,是可以组合的。 The present invention is based on the knowledge of the test confirmed that the first and the second root of conduits under certain boundary conditions, the function may be combined into a single pipe, i.e. united into a combination of conversion and mixing duct, which means that , it can be combined. 它可以与反应管道平行,或者布置在反应管道内部(优选中心位置)。 It may be parallel to the reaction tubes or pipes arranged in the interior of the reaction (preferably the center position). 令人惊异地是,就效用而言,三条管道内的空间分隔并非是必需的。 Surprisingly, yes, it is utility, the space within three separate pipeline is not necessary.

本发明的目的是这样实现的,即本发明的方法具有下列步骤:a)废气进入转换与混合管道,使得废气在管道的纵向方向上,特别是在紊流状态下流过管道,b)例如将液态还原剂,特别像稀尿素溶液喷到转换与混合管道中的废气流中,c)从转换与混合管道流出的废气流转向流入平行布置的、或包围在外面的反应管道内,使废气自此沿反方向流动,d)在反应管中还原催化剂的作用下,将废气中可还原的成分还原。 Object of the present invention is achieved in that the method of the present invention has the following steps: a) conversion and mixing duct into the exhaust gas, so that the exhaust pipe in the longitudinal direction, in particular flowed through the pipeline, b in a turbulent state) for example, liquid reducing agent in the reaction conduit, especially as a dilute urea solution is sprayed into the exhaust gas stream into the conduit in the mixing, c) from flowing out of the exhaust gas flow conversion and mixing duct flows arranged in parallel to, or surrounding the outside of the exhaust gas from the this opposite direction flow, d) in a reaction tube under the action of the reduction catalyst, the reducible exhaust gas components restored.

e)净化过的废气流流出反应管道。 e) purifying the exhaust gas flow out of the reactor through the pipe.

本发明的设备配备有:a)一个带有废气入口的转换与混合管道,其中该管道具有一为废气流流过而预先确定的纵向方向,b)一向转换与混合管道内喷射还原剂的输入装置,c)一与上述管道平行布置的、或包绕在上述管道之外包含有还原催化剂的反应管道,d)一将废气从转换与混合管道继续传输到反应管道中的转向装置,使得废气沿反向流过该反应管道。 The present invention is provided with: a) a conversion and mixing with the exhaust gas inlet duct, wherein the duct has an exhaust gas flow through the longitudinal direction is determined beforehand, b) a conversion has been mixed with the reducing agent injection duct input means, c) a duct in parallel with the above-described arrangement, in addition to or surrounding said pipe comprises a reduction catalyst reaction tubes, d) the exhaust gas is transmitted through a conversion and mixing duct into the reaction duct steering means such that the exhaust gas along reverse flow through the reactor conduit.

e)一个将已净化过的废气从反应管道排出的出口。 e) one of which has been cleaned exhaust gas discharged from the reaction pipe outlet.

反应管道也可以平行地布置在转换与混合管道之旁(平行型),然而在一特别优选的实施形式中,转换与混合管道位于中间区域,尤其是布置在反应管道内的中心位置(中心型)。 Reaction tubes may be arranged in parallel next to the conversion and mixing duct of (parallel type), but in a particularly preferred embodiment, the conversion and mixing duct in the middle region, in particular disposed in the reaction pipe center position (center-type ). 由此得出了三种符合本发明的催化剂结构类型:按照其中一种结构类型,催化剂具有布置成p行、q列的催化剂模块,在其中间区域特别是中心位置一空出(m×n)个催化剂模块的空间,用于构成转换与混合管道,其中,m<p且n<q。 This results in three types of structures consistent with the present invention, the catalyst: Following one type of structure, the catalyst having a catalyst module arranged in row p, q columns, especially in the middle region a center position of empty (m × n) a catalyst space module for constituting conversion and mixing duct, wherein, m <p and n <q. 按照另一种结构类型,催化剂外型呈圆环状,由一些圆弧状催化剂模块组合而成,其内部区域用以构成具有圆形截面的转换与混合管道,并且催化剂可以装入一个外形呈圆形的壳体内,按照第三种结构类型是一种具有外倒角的结构。 According to another type of structure, the catalyst is annular shape, a combination of some of the catalyst module from an arc-shaped, which constitutes the inner region having a circular cross section for conversion and mixing duct, and an outer shape of the catalyst can be loaded circular housing, according to a third type of structure is a structure having an outer chamfered. 其中采用方形或圆弧形模块。 Wherein the module with a square or circular shape.

其它有利的技术方案由从属权利要求给出。 Other advantageous technical solutions are given by the dependent claims.

采用符合本发明的设备,可实现特别紧凑的结构形式,因为只需要两条互相平行布置或两条交错布置的管道,结构体积与催化剂体积的比例也可保持很小。 Using the apparatus consistent with the present invention, a particularly compact structure, since only two are arranged parallel to each other or staggered arrangement of two pipes, the volume ratio of the catalyst volume of the structure can be kept small. 在优选的实施形式中,由于相当简单地、实际上对称地分流,使得所说明的结构原理被保留用于不同的结构尺寸,这样就存在着出于成本原因值得去追求的“保持结构原理的可能性”(“成比例增大”)。 In the preferred embodiment, since the relatively simple, practically symmetrically split, such that the structural principles described are reserved for different structural dimensions, so that there is for reasons of cost worth pursuing "hold structural principle possibility "(" increases in proportion ").

下面借助于7幅附图对本发明的实施例作进一步的说明,相同的和相应的构件具有同一附图标记,附图中:图1为具有两个平行管道的平行式催化净化设备的横截面图(图2中AA截面);图2为图1所示净化设备的纵截面图(图1中BB截面);图3为第一种中心式催化净化设备的纵截面图,该设备具有两个彼此中心布置的管道;图4为图3所示净化设备入流侧的视图;图5为第二种中心式催化净化设备的纵截面图,该设备具有两个彼此中心布置的管道;图6为图5所示净化设备的横截面图(图5中CC截面);图7为在空出一矩形中心式转换与混合管道的情况下,72个方形催化剂模块在反应管道内的布置情况;图8为在空出一个圆形中心式转换与混合管道的情况下,4个圆弧状催化剂模块在反应管道内的布置情况;图9为在空出一个矩形中心式转换与混合管道的情况下,4个方形和4个圆 7 by means of the following drawings, embodiments of the present invention will be further described, the same and corresponding members have the same reference numerals, drawings in which: 1 is a parallel-type catalytic device having two parallel cross-sectional view of the conduit FIG. (FIG. 2 AA section); Fig. 2 is a longitudinal sectional view (section BB in FIG. 1) of the decontamination apparatus shown in FIG. 1; FIG. 3 is a central longitudinal sectional view of a first catalytic purification device, the device having two a central duct disposed each other; FIG. 4 is a side view of the inlet device 3 shown purification; FIG. 5 is a longitudinal sectional view of a second center type catalytic device, the apparatus having two central conduit disposed to each other; FIG. 6 FIG 5 is a cross sectional view of the purification apparatus as shown in (FIG. 5 CC section); Fig. 7 is showing in the case where a rectangular central space conversion and mixing duct, 72 a square arrangement of modules catalyst in the reaction conduit; 8 is in the case of a circular central space conversion and mixing duct, four arc-shaped arrangement of the catalyst in the reaction duct module; FIG. 9 is an empty rectangle with a central mixing duct converter case next, four square and circle 4 形催化剂模块在反应管道内的布置情况。 When the shaped catalyst module disposed within the reaction tubes.

按照图1和图2,用于催化净化由燃烧装置所排出的废气a的设备具有一方形的壳体10,两根废气a的输入管12a、12b通入该壳体10内,废气温度在200~500℃。 According to FIG. 1 and FIG. 2, the catalytic purification of exhaust gas discharged from a combustion apparatus having a device for a rectangular housing 10, a two exhaust gas inlet pipe 12a, 12b into the housing 10, the exhaust gas temperature in 200 ~ 500 ℃. 图2仅清楚地示出了废气输入管12a。 Figure 2 clearly shows that only the exhaust gas feed pipe 12a.

为了清楚地说明,在图1中,将两个废气输入管12a及12b的输入开口14a和14b用虚线画出,输入通道均用14表示。 For clarity of illustration, in FIG. 1, the two exhaust pipes enter the inlet opening 12a and 12b indicated by dotted lines 14a and 14b, the input channels are represented by 14. 两个输入口14a、14b通向一个宽的、伸长的喷射腔,这在下面称作转换与混合管道16,管道16的横截面为方形,它的纵轴方向用18表示,可以看出,两个废气输入管12a、12b与纵轴方向18倾斜相对。 Two input ports 14a, 14b leading to a wide, elongated injection cavity, which is referred to in the following conversion and mixing duct 16, the cross-section of the pipe 16 is square, its longitudinal direction is indicated by 18, can be seen , two exhaust gas feed line 12a, 12b is inclined relative to the longitudinal axis 18. 在该实施例中,为在流动输入的废气a中产生一进气涡流,它们与纸面也倾斜反向。 In this embodiment, to generate an intake swirl in a flow of exhaust gas in the input, which is also inclined to the plane of the reverse. 位于纵轴方向18的中间壁20用来构成转换与混合管道16。 Located in longitudinal direction of the intermediate wall 18 constituting the converter 20 to the mixing pipe 16.

在管道16的始端,且对称地位于两个入口14a和14b之间,在中心位置是一个作为输入装置的双元雾化喷嘴22,由它喷入一种还原剂r,特别是稀尿素溶液和雾化剂p,特别是压缩空气,它在工作时产生的喷射锥用24表示,锥角可从10至40°优先选择大于等于20°。 In the beginning of the duct 16, and symmetrically positioned between the two inlets 14a and 14b, it is in a central position as a binary input device 22 atomizing nozzles, from which a reducing agent is injected into the r, especially a dilute urea solution and aerosol p, in particular compressed air spray cone which is generated when the work is represented by 24, the taper angle may be 20 ° or greater preference of from 10 to 40 °. 在此,双元雾化喷嘴22可通过选择喷射锥、液滴直径、喷射距离、蒸发段来进行匹配,即在转换与混合管道16内,尿素继续转换成氨、本身蒸发以及与流动的废气a混合。 Here, the atomizing nozzles 22 may be binary spray cone by selecting the droplet diameter, spraying distance, to match the evaporating section, i.e. in the conversion and mixing duct 16, continues to convert urea to ammonia itself, as well as the flow of the exhaust gas evaporated a mix.

在转换与混合管16内,可选择安放一种水解催化剂28。 In the conversion and mixing duct 16, 28 selectively placed one hydrolysis catalyst. 在注重完全反应的情况下,当由于尿素所必需的最短滞留期和受其它工艺参数的限制,组合式转换与混合管道16的长度需要很长时,就特别要安放这种催化剂。 In the case of focusing on complete reaction, when the residence time of the urea since the minimum necessary and is limited by other process parameters, the length of a combined conversion and mixing duct 16 takes a long, particularly such catalysts to be placed. 水解催化剂28在一定程度上同样与流入的物质混合,使得人们在装入该水解催化剂后,采用长度缩短的转换与混合管道16也行得通了。 Hydrolysis catalyst 28 to a certain extent with the same mixture of substances flowing in, so that it after loading the hydrolysis catalyst used to shorten the length of the mixing duct 16 also converts the feasible. 重要的是,在转换与混合管道16的末端,尿素实际上完全转换为氨。 Importantly, at the end of the conversion and mixing duct 16, practically completely convert urea to ammonia.

在管道16的末端,设有第一级转向装置30,在第一级转向装置30内可设置转向设备或转向板(未示出)。 At the end of the duct 16, the steering apparatus 30 is provided with a first stage, a first stage in the steering device 30 may be provided a steering device or steering plate (not shown). 第一级转向装置30使流体转为反方向32,也就是转过约180°转向后的物质进入反应管道34,在反应管道34内至少安装一个还原催化剂36,尤其是SCR催化剂。 The first stage 30 of the fluid steering device 32 into the reverse direction, i.e. rotated through 180 ° about material was diverted into the reaction pipe 34, the pipe 34 is mounted in the reactor at least one reduction catalyst 36, in particular the SCR catalyst. 当前的情况是,在那儿设有两个彼此有一定间距的还原催化剂36、38(催化剂块),所述物质沿反方向32流过其纵向管道,还原催化剂36、38在此以众所周知的方式,用来转换废气a中所不希望存在的组份或成份,尤其是用来消除有害的氮氧化合物NOx。 The current situation is that there is provided at a distance from one another have two reduction catalyst 36 (catalyst blocks), the substance flows in the reverse direction through the longitudinal duct 32, the reduction catalyst 36, 38 in a well known manner herein for converting the exhaust gas as a present undesired ingredients or constituents, in particular for the elimination of harmful nitrogen oxides NOx.

对于壳体10的紧凑结构重要的是,废气a在转换与混合管道16内的流动方向18,在反应管道34内转换为流向32,并沿此方向流过还原催化剂36、38。 Important for the housing 10 is compact, a direction of flow of the exhaust gas in the conversion and mixing duct 16, 18, 32 is converted to flow in the reaction pipe 34, and flows along the direction of the reduction catalyst 36.

同还原催化剂36一样,还原催化剂38在本实施例中由六个彼此重叠安放的、同种形式的模块组成,这可由图1得知。 As with the reduction catalyst 36, reducing catalyst 38 by the six embodiment overlap each other in the present embodiment is mounted, forms of the same module, which may be that of FIG. 1.

第二个还原催化剂38可以一定间距或无间距地与截面尺寸相同的氧化催化剂39相连。 The second reduction catalyst 38 can be a certain distance or no distance with the same cross-sectional dimensions of the oxidation catalyst 39 is connected. 氧化催化剂39用来转换CO、CnHn以及其它可氧化的废气组份。 An oxidation catalyst 39 for converting CO, CnHn and other parts of the exhaust gas oxidizable groups.

在反应管道34的出口,连有第二级转向装置40,它用来转向约90°至出口42的方向,在出口上有一个净化后的废气a′的排气口44。 At the outlet of the reaction pipe 34, even the second stage steering means 40, which is used to turn approximately 90 ° to the direction of the outlet 42, there is a purification of exhaust gases after a 'an exhaust port 44 on the outlet.

在此,需再一次说明的是:转化与混合管道16此处用作蒸发、混合与转换段。 Here, description is again required: transformation and mixing pipe 16 here serves as an evaporator, mixed with the transition section. 在管道16内,不存在或不需要静力学混合器来把蒸发的氨NH3与废气a强烈混合,这被视作重要的优点。 In the duct 16, there is no or no static mixer NH3 ammonia is mixed with the exhaust gas a strong evaporation, which is regarded as an important advantage. 尽管如此,也可以确保反应以及喷入的还原剂r与废气a的均匀混合。 Nevertheless, to ensure uniform mixing of the reaction may be injected and the exhaust gas a reducing agent in r.

也很重要的是:两个废气输入管12a、12b对于转换与混合管道16的纵轴18对称布置,由此使上述成份a、p和r最终很好地混合。 It is also important that: two exhaust gas feed line 12a, 12b are arranged symmetrically with respect to the longitudinal axis 18 converts the mixing duct 16, whereby the above-described components a, p and r are ultimately well mixed.

在图3和图4中示出了催化净化设备的一种优选的实施形式,废气a流入该设备中心的第一级管道,并反向流过设置在第一级管道外的第二级管道,在这种实施形式中,入流管或者叫废气输入管12,斜着通入环状预燃室50,预燃室50也可设计成圆盘状。 In Figures 3 and 4 show a preferred embodiment of the catalytic device, the exhaust gas flows into a conduit of the first stage of the center apparatus, and the second stage reverse flow through the conduit is provided outside the first stage of the pipeline in this embodiment, the inlet tube or called exhaust gas feed line 12, obliquely into the annular pre-chamber 50, the pre-chamber 50 may also be designed into a disk shape. 特别如图4所示,废气输入管12倾斜设置,且这样使得预燃室50内的废气a产生关于纵轴方向18的旋转运动。 4 in particular, the exhaust gas feed pipe 12 is inclined, and the exhaust gas such that the precombustion chamber 50 to produce a rotational movement in the direction 18 about the longitudinal axis. 环形预燃室50具有一个以纵轴方向18为中心线的环状排出口52,该环状排出口借助于安装壁54形成。 Annular pre-chamber 50 has a center line in a longitudinal direction 18 of annular outlet port 52, the annular wall 54 is mounted by means of a discharge port is formed. 出口52同时也是管道16的入口。 Outlet 52 is also the inlet duct 16. 在安装壁54上固定有一个输入装置22,也就是一个用于(喷射)还原剂r和雾化剂p的双元雾化喷嘴。 Mounted on a wall 54 fixed to the input device 22, i.e. one for the (injection) a reducing agent and a fogging agent p r binary atomizing nozzle. 雾化喷嘴22的喷射锥仍用24来表示。 Atomizing nozzles 22 of the spray cone is still represented by 24. (喷嘴)结构这样设计,即使外部留有一定的装配空间56废气a经过出口52流入转换混合管道16,并在那儿与雾化的还原剂r混合。 (Nozzle) such structural design, even leave some external fitting space 56 through the exhaust gas outlet 52 a mixing duct 16 flows into the converter, where r and mixed with a reducing agent in atomized.

在转换与混合管道16内,也可再选择安装一水解催化剂28。 In the conversion and mixing duct 16, can then choose to install a hydrolysis catalyst 28.

在转换与混合管道16的末端是一个转向装置或转向腔58,它与一环状反应管道34相连,该反应管道从外面包围住转换与混合管道16,且实际上完全充满了还原催化剂36,其纵向管道与纵轴方向18平行。 At the end of the conversion and mixing duct 16 is a steering device or steering chamber 58, which is connected with a loop reactor conduit 34, which surrounds the reaction tubes 16 conversion and mixing duct from the outside, and is virtually completely filled with the reduction catalyst 36, longitudinal direction 18 parallel to the longitudinal axis of the conduit. 为了混合气的导向,可在转向腔58内设置转向板或转向导向装置60。 In order to guide the gas mixture, the chamber may be provided within the steering deflection plate 58 or the steering guide means 60. 管道16可通过一管状板壁61构成。 Conduit 16 may be constituted by a tubular plate wall 61. 在考虑到一定结构条件的情况下,作为反应催化剂36的支架的板壁61可以取消,那么,管道16内的气体就已经与催化剂36外侧的催化剂材料反应了。 Taking into account the structure of certain conditions, as a reaction catalyst siding stent 6136 may be canceled, then the gas in the conduit 16 will have reacted with the catalyst material 36 outside of the catalyst.

转向腔58的后壁62以及转换与混合管道16,还有存在时的板壁61,可在其内表面上涂上一层活性催化表面。 The deflection chamber rear wall 62 and a converter 58, the mixing duct 16, 61 when there exists siding, can be coated with catalytically active surfaces on its inner surface. 同样,在转向导向装置60上也涂上一层这类的活性催化涂层。 Also, in the steering guide means 60 also coated with an active layer of such a catalytic coating. 在此,可选用水解催化涂层或SCR催化涂层。 Here, the choice of hydrolysis or catalytic coating SCR catalytic coating. 通过这类涂层,表明可以在这些地方避免出现固态沉淀物和因之产生的堵塞。 By such a coating, indicating a solid precipitate can be avoided and consequent blockage produced appear in these places.

在流过具有一矩形或圆形横截面的环形转换与混合管道16之后,混合气到达了一几何尺寸相同的环状流出室64。 After flowing through the conduit 16 mixed with the conversion has a rectangular or circular cross-section of the annular, the gas mixture reaches a geometry identical annular outflow chamber 64. ,流出室64具有两个流出通道或出口66、68,原则上采用一个出口就足够了,催化净化后的废气a′可以从这儿、必要时再经过其它装置(如热交换器、消音器)进入废气通道,进入排气出口或烟囱。 , Outflow chamber 64 having two outlet or outflow channels 66, 68, using a principle outlet is sufficient, the catalytic purification of exhaust gas after a 'from here, if necessary, and then through other means (e.g., a heat exchanger, silencer) into the exhaust passage into the exhaust gas outlet or chimney.

图5和图6所示实施形式在很大程度上与图3、图4中的那个实施形式相应,不过此处的排气室或流出室64不是直接装有一个或多个出口,更确切地讲,排气室64带有另外一个转向装置,换句话说:排气室64这样设计,即使得气流转向至与纵轴方向18平行,并进入一个消音室70,消音室70为一环状空间,它位于管道16的外部,并带有SCR催化剂36。 Figures 5 and 6 embodiment shown in FIG. 3 largely form, the embodiment of FIG. 4 in the form of corresponding, but here the outflow chamber or the exhaust chamber 64 is not directly provided with one or more outlets, and more particularly speaking, an exhaust chamber 64 with a further steering device, in other words: an exhaust chamber 64 in such a way, even if the gas stream have to turn parallel to the longitudinal axis 18, and into a silencer chamber 70, the muffler chamber 70 is a ring shaped space, which is located outside duct 16, and 36 with the SCR catalyst. 在此,消音室70设有两个废气出口72、74,净化过的废气a′从这儿排出。 Here, the muffler chamber 70 is provided with two exhaust outlet 72, the purified exhaust gas a 'is discharged from here. 原则上讲,此处采用一个出口就足够了。 In principle, the use of an outlet here is enough. 壳体10的外壁可另外涂上一层吸音材料(未示出),以增强消音室70的效果。 The outer wall of the housing 10 may be additionally coated with sound absorbing material (not shown), to enhance the effect of the muffler chamber 70.

在本实施例中也可以将活性催化涂层,特别是SCR涂层,也可应用在转向室58和转换与混合管道16内。 In the present embodiment, the coating may be catalytically active, especially SCR coating may also be applied within the chamber 58 and the steering conversion and mixing duct 16.

在用来(喷射)还原剂r和雾化剂p的双元雾化喷嘴22中,也可选用商业上惯用的喷嘴,使其喷射锥24具有预先设定的喷射角,它应当与壳体10绝热。 For the (injection) a reducing agent and a fogging agent p r binary spray nozzle 22, can also be used on conventional commercial nozzles, so that the spray cone 24 having a predetermined injection angle, and it should be the case 10 thermal insulation. 由于废气存在绕纵轴线18的旋转涡流,使得混合良好。 Due to the presence of the exhaust gas swirl rotating about the longitudinal axis 18, such that good mixing.

在本实施例中,SCR催化剂36也是由多个单独的模块构成,这在图6中可特别清楚地看出。 In the present embodiment, the SCR catalyst 36 is composed of a plurality of individual modules, which can be seen particularly clearly in FIG. 6. 据此总共有(3×3)-1=8个这类具有标准尺寸的模块,这种模块总是具有一矩形、特别是方形的横截面。 Thus a total of (3 × 3) -1 = 8 such modules of a standard size, such a module always has a rectangular, in particular square cross section. 也可选择旋转对称形设置来取而代之。 Alternatively rotationally-symmetrical set to replace. 根据给定模块的结构方式,转换与混合管道16在右面部分具有一矩形、特别是方形横截面。 The structure of embodiment given module, conversion and mixing duct 16 has a rectangular shape in the right section, in particular square cross section. 图6所示左侧的进口区域(腔室50)具有圆形或倒圆角的结构。 Inlet region on the left side of FIG. 6 (chamber 50) has a circular or rounded configuration. 沿流动方向看,气流由一个圆形截面逐渐过渡到有角的横截面。 Direction of flow, the air flow cross-section of a gradual transition to the angular cross-section. 所示出的用于净化废气的设备特别为在载重汽车的柴油机上使用而设计。 Apparatus for purifying exhaust gas shown particular use in diesel truck design.

作为还原催化剂36,还应当作如下说明:可以使各个模块彼此重叠地堆叠(如图所示)或使多个模块一个接一个地布置。 As the reduction catalyst 36, also described as follows: each module can be stacked to overlap each other (as shown) or a plurality of modules arranged one after another. 在一个接一个布置的情况下,各模块之间都有一个间隙,这在图2中业已示出,中间空腔可以将不同的催化剂彼此分开。 In case arranged one after another, there is a gap between the modules, which has been illustrated in FIG. 2, an intermediate cavity may be different from each other catalyst. 例如,首先安装一个SCR催化剂模块,接下来再安装一个氧化催化剂模块。 For example, a first install the SCR catalyst module, a subsequent oxidation catalyst install module.

图7给出了一种结构有些不同的催化剂36,在此,模块布置成行数p=9,列数q=9。 Figure 7 shows a somewhat different configuration of catalyst 36, in this case, the number of modules are arranged in a row p = 9, the number of columns q = 9. 在中心(此处为中心式结构)留出了一个用于转化与混合通道16的空间,对此省出了(m×n)=3×3个模块,因而在反应管道34的截面上总共布置有(p×q)-(m×n)=9×9-9=72个模块。 At the center (here, center structure) aside a space for the conversion and mixing duct 16, which save the (m × n) = 3 × 3 modules, and therefore the reaction in the section of the pipe 34 Total arranged (p × q) - (m × n) = 9 × 9-9 = 72 modules.

当然,可选择的催化剂模块的布置有3×3-1=8、4×4-2×2=12、5×5-3×3=16、6×6-2×2=32、7×7-3×3=40、8×8-4×4=48、10×10-4×4=84等等。 Of course, an alternative arrangement the catalyst module are 3 × 3-1 = 8,4 × 4-2 × 2 = 12,5 × 5-3 × 3 = 16,6 × 6-2 × 2 = 32,7 × 7-3 × 3 = 40,8 × 8-4 × 4 = 48,10 × 10-4 × 4 = 84 and the like. 在此总是选择p=q和m=n,此外,不仅仅是正方形结构,原则上矩形结构也可以,例如采用(7×5)-(3×3)=26个模块,也可以选择p≠q和/或m≠n。 Here always choose p = q and m = n, in addition, not only a square structure, a rectangular structure in principle may be, for example, using (7 × 5) - (3 × 3) = 26 modules, may choose p ≠ q and / or m ≠ n.

由此清楚地表明,配置(p×q)-(m×n)一般为矩形结构(p>m、q>n且p、q、m、n始终为整数)为其空出(m×n)个模块的管道16优选中心布置(中心结构),但该中心结构本身必须不处于中心位置。 Thereby clearly indicate that the configuration (p × q) - (m × n) generally rectangular configuration (p> m, q> n, and p, q, m, n is an integer always) for empty (m × n pipe) module 16 is preferably arranged in the center (central structure), the structure itself must not be the center in the center position.

还需强调的是,催化剂36以及壳体10可具有整体呈圆形、或倒圆角的结构形式,换句话说,这种结构形式可具有一个贯通的为圆形或四边形的内通道16、一个或多个圆环状催化剂36、以及一圆形的外轮廓。 Needs to be emphasized that the catalyst 36 and the housing 10 may have an overall circular or rounded inverted structure, in other words, this structure may have a circular or quadrangular through the inner passage 16, one or more annular catalyst 36, and a circular outer contour. 环状催化剂36适宜由一些弧状催化剂模块组成,例如可由四个四分之一圆弧段组成。 Suitable catalyst 36 by a number of annular arcuate catalyst modules, for example, by four quarter circle segments.

图8中,具有一中心式圆形通道16,在管状板壁61与外罩或壳体10之间形成的环绕的管道34内有四个相同的四分之一圆弧段的催化剂模块36r。 In FIG. 8, having a central circular channel 16 of formula, a catalyst module 36r four identical quarter-circle segment around the inner conduit 34 formed between the tubular plate wall 61 or the housing 10 with the cover. 也可与此不同,而采用更多的模块36r,例如8个模块36r,它们各自占有45°。 This may be different, use more modules 36R, 36R for example, eight modules, each of which occupies 45 °. 在各个模块36r之间的空间内,优先选用胶水或密封材料,例如一种陶瓷-纤维材料。 In the space between the respective modules 36R, preferred glue or sealing material, such as a ceramic - fiber material. 也可使用膨胀垫,这使得模块36r径向环绕。 Expandable mats may also be used, so that the module 36r which radially surround. 所示出的圆形结构形式具有很好的强度。 Illustrated circular structure having good strength.

与之相对,图9中所涉及的为一倒圆角的结构形式。 In contrast, in FIG. 9 is involved in the form of a rounded configuration. 其中,催化剂36由四个相同的矩形催化剂模块36Z和四个相同的四分之一圆弧状催化剂模块36r组成,它们始终保持交替布置。 Wherein the catalyst 36 by four identical rectangular catalyst module 36Z and four identical quarter arc-shaped catalyst module 36r, which are alternately arranged remain. 尺寸大的结构可以包含更多的模块36Z和36r,例如也可设置行数p>3(如p=12),列数q>3(如q=12)。 Large size structures can contain more modules 36Z and 36r, the number of rows may be provided, for example, p> 3 (eg p = 12), the number of columns q> 3 (such as q = 12). 在弯角处,总是为四分之一圆弧状模块36r或多个圆弧状模块36r。 In the corner, the quarter circle shape is always more or arcuate module 36r 36r modules. 模块36r之间的空隙同样可用胶水或密封材料填充,也可使用膨胀垫。 The gap between the module 36r likewise be filled with glue or sealing material may be used inflatable pads. 这种倒圆角的实施形式在承受机械负荷方面也是特别坚固的。 This embodiment is in the form of rounded mechanically loaded is also particularly strong.

图7至图9中的催化剂的布置主要应用于大型设备。 The arrangement of the catalyst 7 to 9 are used for large equipment.

图3至图9所示实施形式的中心对称结构具有如下优点:-还原剂废气混合良好;-与还原剂混合的废气均匀分布于催化剂上;-具有在不同结构尺寸条件下,结构原理保持不变的可能性(成比例增大);-具有使相同结构原理的各级结构尺寸的结构模块化的可能性并可采用相同结构的组件(特别是催化剂结构模块、转换与混合管道);-具有在入流区域(中心式)使用水解催化剂的可能性(在SCR方法中使用尿素);-具有安装转向装置60的可能性;-具有在转向装置60或转向壁62上采用活性催化表面的可能性,例如用于水解或对于废气通常的催化净化;-具有在环状空间16内布置组合式催化剂的可能性,例如SCR催化剂和氧化催化剂;-由于转向壁62的转向和/或转向装置60、以及多倍的截面变化/反射面,使得消音良好。 The form of embodiment shown centrosymmetric structure having 3 to 9 the following advantages: - good mixing of the exhaust gas a reducing agent; - mixing the exhaust gas and the reducing agent uniformly distributed on the catalyst; - at different structures having dimensions conditions, the principle remains the structure the possibility of varying (increasing in proportion); - the possibility of having the same structural principle that the structural dimensions of the modular structure of the levels of components and can take the same structure (especially a catalyst structure module, converting the mixing pipe); - having the possibility of using a hydrolysis catalyst in the inflow region (centric) (SCR process using urea); - having the possibility of mounting a steering device 60; - might have with an active catalytic surface 60 on the steering or steering means of the wall 62 of, for example, a conventional hydrolysis or for an exhaust gas catalytic purification; - the possibility of having an annular space 16 is arranged within the combined catalyst, such as an SCR catalyst and an oxidation catalyst; - steering the steering wall 62 and / or steering means 60 , and the change of section / times of the reflection surface, so that good silencing. 具有安装附加的消音构件的可能性,或具有通过流道设计,利用形成的干扰达到反射消音器的效用的可能性;-采用具有适宜喷射角(约10°~40°)的双元雾化喷嘴22,用以喷射辅助还原物质,例如氨或者尿素,或者其它可释放出NH3的还原剂;-由于结构紧凑,利用外表面上的强烈还原,热损失很小。 Having the possibility of installing additional silencing member, with the possibility of interference or reflection silencer reached by the utility flow channel design, using formation; - double element having a suitable atomizing spray angle (approximately 10 ° ~ 40 °) of a nozzle 22 for injecting auxiliary reducing substance, such as ammonia or urea, or other reducing agent can release of NH3; - due to the compact structure, the use of strongly reducing the outer surface, heat loss is small.

-在水解临界点,即在喷射后的地方的温度标准(Vergleichmβigung)。 - hydrolysis of the critical point, i.e., where the injection temperature standard (Vergleichmβigung).

-通过在催化剂室的中心布置转换与混合管道,使得结构紧凑。 - conversion and mixing duct is arranged through the center of the catalyst chamber, such that the compact.

-由于废气a的各次转向形成的混合效应,使得混合良好,反应转换彻底。 - each time because the exhaust gas of a mixed steering effect is formed, so that a good mixing, the conversion reaction is complete.

Claims (18)

  1. 1.一种用于净化由采用固态、液态或气态燃料的燃烧装置所排出的废气(a)的方法,其具有下列步骤:a)引导废气(a)进入一转换混合管道(16),使得废气(a)以预先确定的纵轴方向(18),最好在涡流状态下流过该管道(16),b)在转换与混合管道(16)内,向废气(a)流内喷入例如呈液态或气态的还原剂(r),特别如稀尿素溶液或气态氨,c)废气(a)流从转换与混合管道(16)转向进入一与该管道平行布置的、或在外面包围住该管道的反应管道(34)内,使得废气(a)自此沿反方向(32)流动,d)在反应管道(34)内,废气(a)中可还原的成份,在还原催化剂(36、38)处还原,e)已净化的废气(a′)流被引导流出反应管道(34)。 An exhaust gas purifying (a) discharged from the use solid, liquid or gaseous fuel combustion apparatus for the method, having the following steps: a) guiding the exhaust gas (a) a conversion into the mixing pipe (16), such that the exhaust gas (a) a pre-determined longitudinal axis (18) is preferably flowed through the conduit in the vortex state (16), B) in the conversion and mixing duct (16), the exhaust gas (a) is sprayed into the stream e.g. liquid or gaseous reducing agent (R & lt), in particular as a dilute urea solution, or gaseous ammonia, c) the exhaust gas (a) stream from the shift conversion and mixing duct (16) into a parallel arrangement with the conduit, the outer bread or enclosed reaction tubes within the duct (34), such that the exhaust gas (a) since the flow in the opposite direction (32), d) in the reaction duct (34), the exhaust gas (a) the reducible composition, the reducing catalyst (36 , 38) at a reduction, e) the purified exhaust gas (a ') flow is directed out of the reactor pipe (34).
  2. 2按照权利要求1所述的方法,其特征在于,在反应管道(34)内流动的废气(a)要流过一个氧化催化剂(39)。 The method of claim 2 according to claim 1, wherein, in the reaction duct (34) the exhaust gas (a) flowing in the oxidation catalyst to flow through one (39).
  3. 3.按照权利要求1或2所述的方法,其特征在于,在转换与混合管道(16)内流动的废气(a)要流过一水解催化剂(28)。 3. The method of claim 1 or according to claim 2, wherein, in the conversion and mixing duct (16) the exhaust gas (a) flowing in the flowing to a hydrolysis catalyst (28).
  4. 4.一种用于净化由采用固态、液态或气态燃料的燃烧装置所排出的废气(a)的设备,其包括:a)一转换与混合管道(16),该管道带有废气(a)的入口(14、52)和一预先给定的纵轴方向(18),废气(a)沿该方向流动,b)一用来向转换与混合管道(16)内喷射还原剂(r)的输入装置(22),c)一与管道(16)平行布置或在外面将其包围住的反应管道(34),它内含还原催化剂(36、38),d)转向装置(30、58),用于将废气(a)自转换与混合管道(16)导入反应管道(34),以使废气(a)沿反方向流过反应管道(34),e)排气口(44;66、68;72、74),用作净化后的废气(a′)自反应管道(34)流出的出口。 An exhaust gas purifying (a) discharged from the use solid, liquid or gaseous fuel burner apparatus, comprising: a) a conversion and mixing duct (16), the duct having an exhaust gas (a) an inlet (14, 52) and a predetermined longitudinal direction (18), the exhaust gas (a) flowing in this direction, b) the conversion to a mixing duct (16) injecting a reducing agent (r) of input means arranged in parallel (22), c) and a duct (16) surrounding or outside the reaction tubes (34) live, it contains a reduction catalyst (36,38), d) a steering device (30, 58) , for the exhaust gas (a) from the conversion and mixing duct (16) introduced into the reaction tubes (34), so that the exhaust gas (a) flowing through the reaction tubes (34) in the opposite direction, e) an exhaust port (44; 66, 68; 72, 74), the exhaust gas (a ') is used as the purge from the reaction duct (34) flowing out of the outlet.
  5. 5.按照权利要求4所述的设备,其特征在于,输入装置(22)为一用来喷入稀尿素溶液和压缩空气的双元雾化喷嘴,它优选布置在转换与混合管道(16)的入口(14、52)的中心位置。 5. The apparatus according to claim 4, characterized in that the input means (22) is used as a dilute urea solution is sprayed into the compressed air and binary spray nozzles, it is preferably arranged in the conversion and mixing duct (16) the central position of the inlet (14, 52) of.
  6. 6.按照权利要求4或5所述的设备,其特征在于,在反应管道(34)的末端,在排气口(44;66、68;72、74)之前设有另一转向装置(40、64)。 6. The apparatus of claim 4 or claim 5, characterized in that, at the end of the reaction duct (34), exhaust port (44; 66, 68; 72, 74) before the steering apparatus is provided with a further (40 64).
  7. 7.按照权利要求4至6中任一项所述的设备,其特征在于,在反应管道(34)内设有一氧化催化剂(39)。 7. The apparatus 4-1 according to any of claim 6, wherein, in the reaction duct (34) is provided with an oxidation catalyst (39).
  8. 8.按照权利要求4至7中任一项所述的设备,其特征在于,在转换与混合管道(16)内、在转向装置(30、58)区域内或在反应管道(34)内,在还原催化剂(36、38)之前,设有水解催化剂(28)。 8. The apparatus 4 to 7 according to any one of the preceding claims, characterized in that, in the conversion and mixing duct (16), the steering means (30, 58) or in the region of the reaction duct (34), before reduction catalyst (36, 38), is provided with a hydrolysis catalyst (28).
  9. 9.按照权利要求4至8中任一项所述的设备,其特征在于,转换与混合管道(16)布置在反应管道(34)的中心。 9. An apparatus 4-1 according to any of claim 8, characterized in that the conversion and mixing duct (16) is arranged at the center of the reactor pipe (34).
  10. 10.按照权利要求4至9中任一项所述的设备,其特征在于,还原催化剂(36、38),最好是SCR催化剂,由各个方形或圆弧形模块(36Z、36r)组成,并且转换与混合管道(16)的横截面呈矩形或圆形,或仅在角部倒圆角。 10. A device according to any one of the 4-9 claims, characterized in that the reduction catalyst (36, 38), preferably an SCR catalyst, square or circular arc-shaped by the individual modules (36Z, 36r) composition, and the conversion and mixing duct (16) of rectangular or circular cross-section, or only at the rounded corner portions.
  11. 11.按照权利要求4至10中任一项所述的设备,其特征在于,在转换与混合管道(16)的入口(14)之前设有一盘状或环状预燃室(50)。 11. The apparatus of one of claims 4 to 10 according to any one of the preceding claims, characterized in that, with a disc-shaped or annular prechamber (50) prior to the conversion and mixing duct inlet (16) to (14).
  12. 12.按照权利要求4至10中任一项所述的设备,其特征在于,作为转换与混合管道(16)的入口(14)至少设有用于废气(a)的两个进气口(14a、14b)。 12. The apparatus of one of claims 4 to 10 according to any one of the preceding claims, characterized in that, as the conversion and mixing duct (16) an inlet (14) is provided with at least two intake ports for the exhaust gases (a), (14a , 14b).
  13. 13按照权利要求4至12中任一项所述的设备,其特征在于,转向装置(30、58)具有一活性催化表面。 13 apparatus according to claim 4 to any one of claims 12, characterized in that the steering means (30, 58) having a catalytic surface activity.
  14. 14.按照权利要求6至13中任一项所述的设备,其特征在于,附设的转向装置(40、64)具有一活性催化表面。 14. The apparatus of claim 6-1 in accordance with any claim 13, characterized in that, attached to the steering means (40, 64) having a catalytic surface activity.
  15. 15.按照权利要求4至14中任一项所述的设备,其特征在于,反应管道(34)设有消音机构(70)。 15. The apparatus as claimed in any one of claim 4 to 14, characterized in that the reaction duct (34) is provided with a silencer means (70).
  16. 16.一种催化剂(36、38、39),其具有以p行、q列布置的催化剂模块(36Z),在模块中,在中间区域且优选在中心区域空出m×n个催化剂模块(36Z)以用来构成转换混合管道(16),其中m<p且n<q。 16. A catalyst (36, 38), having a catalyst module (36Z) in a row p, q arranged in a column, in the module, and preferably in the middle region of the central region of the m × n vacated catalyst module ( 36Z) configured to be used to convert the mixing duct (16), where m <p and n <q.
  17. 17.一种圆环状的催化剂(36、38、39),其由一些圆弧状催化剂模块(36r)组合而成,其内部区域用于构成具有圆形横截面的转换与混合管道(16),并且该催化剂可装入一外形为圆形的壳体(10)内。 17. A ring-shaped catalyst (36, 38), which is a combination of a number of arcuate catalyst module (36R) from which the interior area for conversion and mixing duct having a circular cross-sectional configuration (16 ), and the catalyst may be loaded into a housing of a circular shape) (10.
  18. 18.一种具有倒圆角结构的催化剂(36、38、39),其由一些矩形催化剂模块(36Z)和一些圆弧状催化剂模块(36r)组合而成,其内部区域用来形成转换与混合管道(16)。 18. A catalyst (36, 38) rounded structure, which is a combination of a number of rectangular catalyst module (36Z) and a number of arc-shaped catalyst module (36R) from which the conversion and for forming the inner region mixing duct (16).
CN 96194716 1996-06-21 1996-06-21 Catalytic purification process and device for exhaust gas from combustion system CN1187778A (en)

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CN100416056C (en) 2005-08-17 2008-09-03 株式会社电装 Exhaust gas cleaning device and its method
CN100441835C (en) 2003-09-05 2008-12-10 日产柴油机车工业株式会社 Exhaust gas purification device of engine
CN100552197C (en) 2003-10-17 2009-10-21 丰田自动车株式会社 Exhaust gas purification device for an internal combustion engine and exhaust gas purification method for an internal combustion engine
CN102741517A (en) * 2009-12-23 2012-10-17 卡特彼勒公司 Exhaust aftertreatment system
CN103573350A (en) * 2012-07-20 2014-02-12 曼卡车和巴士股份公司 Mixing device for the aftertreatment of exhaust gases
CN104321507A (en) * 2012-04-19 2015-01-28 唐纳森公司 Integrated exhaust treatment device having compact configuration
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CN105051343A (en) * 2013-03-15 2015-11-11 天纳克汽车经营有限公司 Modular exhaust treatment system
CN105240092A (en) * 2015-11-06 2016-01-13 葛荣超 Liquid-state purification device for exhaust gas of automobile
CN105569786A (en) * 2014-11-05 2016-05-11 曼柴油机和涡轮机欧洲股份公司 Exhaust catalytic converter
CN106170613A (en) * 2014-03-11 2016-11-30 庄信万丰催化剂(德国)有限公司 Compact cylindrical selective catalytic reduction system for nitrogen oxide reduction in the oxygen-rich exhaust of 500 to 4500 KW internal combustion engines
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CN100441835C (en) 2003-09-05 2008-12-10 日产柴油机车工业株式会社 Exhaust gas purification device of engine
CN100552197C (en) 2003-10-17 2009-10-21 丰田自动车株式会社 Exhaust gas purification device for an internal combustion engine and exhaust gas purification method for an internal combustion engine
CN100416056C (en) 2005-08-17 2008-09-03 株式会社电装 Exhaust gas cleaning device and its method
CN102741517A (en) * 2009-12-23 2012-10-17 卡特彼勒公司 Exhaust aftertreatment system
CN104321507A (en) * 2012-04-19 2015-01-28 唐纳森公司 Integrated exhaust treatment device having compact configuration
CN104321507B (en) * 2012-04-19 2017-07-07 唐纳森公司 Integrated exhaust treatment device having a compact structure
CN103573350A (en) * 2012-07-20 2014-02-12 曼卡车和巴士股份公司 Mixing device for the aftertreatment of exhaust gases
EP2687286A3 (en) * 2012-07-20 2017-06-28 MAN Truck & Bus AG Mixing device for the aftertreatment of exhaust gases
CN104755715A (en) * 2012-10-08 2015-07-01 Avl里斯脱有限公司 Exhaust gas cleaning device
CN104755715B (en) * 2012-10-08 2017-09-08 Avl里斯脱有限公司 An exhaust gas cleaning device
CN105051343A (en) * 2013-03-15 2015-11-11 天纳克汽车经营有限公司 Modular exhaust treatment system
CN104420948B (en) * 2013-09-11 2017-04-12 财团法人车辆研究测试中心 The exhaust gas treatment apparatus and the carrier processing method
CN104420948A (en) * 2013-09-11 2015-03-18 财团法人车辆研究测试中心 Treating device for carrier waste gas and treating method thereof
CN104653259A (en) * 2013-11-15 2015-05-27 沃尔沃汽车公司 Exhaust gas aftertreatment device
CN106170613A (en) * 2014-03-11 2016-11-30 庄信万丰催化剂(德国)有限公司 Compact cylindrical selective catalytic reduction system for nitrogen oxide reduction in the oxygen-rich exhaust of 500 to 4500 KW internal combustion engines
CN105569786A (en) * 2014-11-05 2016-05-11 曼柴油机和涡轮机欧洲股份公司 Exhaust catalytic converter
CN107002539A (en) * 2015-01-23 2017-08-01 大陆汽车有限公司 Exhaust gas cleaning component for cleaning the exhaust gases of an internal combustion engine
CN105240092A (en) * 2015-11-06 2016-01-13 葛荣超 Liquid-state purification device for exhaust gas of automobile

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