WO2024089299A1 - Device for exhaust gas purification - Google Patents
Device for exhaust gas purification Download PDFInfo
- Publication number
- WO2024089299A1 WO2024089299A1 PCT/ES2022/070695 ES2022070695W WO2024089299A1 WO 2024089299 A1 WO2024089299 A1 WO 2024089299A1 ES 2022070695 W ES2022070695 W ES 2022070695W WO 2024089299 A1 WO2024089299 A1 WO 2024089299A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chamber
- tank
- exhaust gas
- gas purification
- exhaust
- Prior art date
Links
- 238000000746 purification Methods 0.000 title claims description 14
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000000779 smoke Substances 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 32
- 239000003517 fume Substances 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
Definitions
- the present invention refers to a device for exhaust gas purification whose obvious purpose is to reduce polluting emissions from an internal combustion engine.
- the invention is therefore located in the field of internal combustion engines, preferably for the automotive sector, without ruling out other industrial sectors. BACKGROUND OF THE INVENTION
- different types of exhaust gas purification systems for an internal combustion engine are known.
- these systems are based on an exhaust gas purification apparatus consisting of a reduction catalytic converter that is arranged in an exhaust pipe of the engine and a liquid reducing agent, in response to the operating state of the engine, is injected to be supplied to the exhaust gases at a position upstream of the reduction catalytic converter, to produce a catalytic reduction reaction between the NOx in the exhaust gases and the liquid reducing agent, thereby purifying the NOx into non-harmful components .
- a liquid reducing agent an aqueous solution is usually used, which is hydrolyzed by the heat of the exhaust gases and the steam in the exhaust gases.
- the level of pollutant reduction of these systems is still insufficient, given the large volume of vehicles with this type of engines that still exist.
- the device of the invention is made up of three horizontally elongated chambers or tanks, arranged in parallel, connected to each other, and of different diameters.
- the first of the smaller diameter chambers/reservoirs includes at one end an intake or inlet of gases to be treated, coming from the vehicle's engine.
- the gases pass through said chamber due to the pressure with which they leave the engine, so that the aforementioned first chamber/reservoir ends at its other end in an elbow that communicates with the second chamber/reservoir, the one with the largest diameter of the three, located below, and within which an exhaust gas reducing liquid is established.
- said gases are treated along the second chamber/reservoir, they are passed through the third chamber/reservoir, arranged above and connected in series with said second chamber/reservoir, which ends at its opposite end in the corresponding outlet or exhaust of purified smoke.
- the third chamber/tank will include one or more filters, preferably two, duly separated from each other, which only allow the gases to pass through, so that the liquids that could have access said third chamber/deposit, they are recirculated to the second chamber/reservoir, by means of the corresponding pumps associated with respective external pipes that intercommunicate these chambers.
- filters preferably two, duly separated from each other, which only allow the gases to pass through, so that the liquids that could have access said third chamber/deposit, they are recirculated to the second chamber/reservoir, by means of the corresponding pumps associated with respective external pipes that intercommunicate these chambers.
- a compressor could be included that further forces said gas flow. From this structure, a low-cost exhaust gas purification device is achieved, simple in operation and easily installed due to its low weight.
- Figure 1. Shows a perspective view of a device for exhaust gas purification made in accordance with the object of the present invention .
- Figure 2. Shows a side perspective view of the device of the previous figure.
- Figure 3. Shows the internal structure and arrangement of filters within the first chamber.
- Figure 4. Shows the internal structure and arrangement of filters within the second chamber.
- Figure 5.- Figure 3. Shows the internal structure and arrangement of filters within the third and last chamber. PREFERRED EMBODIMENT OF THE INVENTION
- the first of the chambers/reservoirs (1) has a smaller diameter than the other two, such as 5 centimeters, including at one end an intake or inlet for gases (2) to be treated, coming from the vehicle's engine.
- the gases pass through said chamber due to the pressure with which they leave the engine, although they could be additionally driven by a compressor installed in said first chamber/tank (1), a chamber that ends at its opposite end in an elbow (3) that communicates with the second chamber/tank (4), the one with the largest diameter of the three, in the chosen example with a diameter of 20 centimeters, and which is located below the first chamber, defining a tank in which a reducing liquid is established.
- exhaust gases that partially occupies said chamber, to allow the passage of the gases to be purified through it, including a filter made of perforated sheets (11) separated by spacer rods (12).
- This liquid can be introduced through an inlet (5) located in the first chamber/tank (1), since it communicates directly with the second chamber/tank (4) located below, and said second chamber/tank (4) can be purged. through a purge outlet (6).
- this second chamber and as shown in Figure 4, there will be a filter made of perforated sheets (11) between which a rubber filter (13) is arranged.
- the gases are treated along the second chamber/tank (4), they are passed through the third chamber/tank (7), arranged above the second chamber. /tank (4) and connected in series with it, which ends at its opposite end in the corresponding outlet (8) or purified smoke exhaust.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to a device formed by three horizontally elongate chambers or tanks, arranged in parallel at different heights, such that the first chamber includes a gas inlet or entry (2) for the gases to be treated, which is in communication with the second chamber/tank (4), of a smaller diameter, disposed below and defining a tank containing an exhaust-gas-reducing liquid that partly occupies the chamber, the second chamber being in communication, by the other end thereof, with the third chamber/tank (7), which is disposed above and finishes at the opposite end thereof in a corresponding outlet (8) or exhaust for purified fumes.
Description
DISPOSITIVO PARA LA DEPURACIÓN DE GASES DE ESCAPE
OBJETO DE LA INVENCIÓN La presente invención se refiere a un dispositivo para la depuración de gases de escape cuya evidente finalidad es la de permitir reducir las emisiones contaminantes de un motor de combustión interna. La invención se sitúa pues en el ámbito de los motores de combustión interna, preferentemente para el sector de la automoción, sin descartar otros sectores industriales. ANTECEDENTES DE LA INVENCIÓN En el estado de la técnica actual se conocen distintos tipos de sistemas de depuración de los gases de escape de un motor de combustión interna. En general, estos sistemas están basados en un aparato de purificación de gases de escape que consiste en un convertidor catalítico de reducción que está dispuesto en un tubo de escape del motor y un agente reductor líquido, en respuesta al estado operativo del motor, se inyecta para ser suministrado a los gases de escape en una posición aguas arriba del convertidor catalítico de reducción, para producir una reacción de reducción catalítica entre el NOx en los gases de escape y el agente reductor líquido, purificando de esta manera el NOx en componentes no dañinos. Como agente reductor líquido, normalmente se emplea una solución acuosa que se hidroliza mediante el calor de los gases de escape y el vapor en los gases de escape.
Sin embargo, el nivel de reducción de contaminantes de estos sistemas sigue siendo insuficiente, dado el gran volumen de vehículos con este tipo de motores que todavía existen. Se desconoce por parte del solicitante la existencia de un dispositivo con las características que seguidamente se van a describir. EXPLICACIÓN DE LA INVENCIÓN El dispositivo para la depuración de gases de escape que se preconiza resuelve de forma plenamente satisfactoria la problemática anteriormente expuesta, mejorando el funcionamiento los sistemas actualmente conocidos en el estado de la técnica. Para ello, el dispositivo de la invención se constituye a partir de tres cámaras o depósitos alargados horizontalmente, dispuestos paralelamente, comunicados entre sí, y de distintos diámetros. La primera de las cámaras/depósitos de la de menor diámetro, incluyen en uno de sus extremos una toma o entrada de gases a tratar, provenientes del motor del vehículo. Los gases atraviesan dicha cámara por la propia presión con que salen del motor, de manera que la citada primer cámara/depósito se remata por su otro extremo en un codo que comunica con la segunda cámara/depósito, la de mayor diámetro de las tres, situada inferiormente, y en cuyo seno se establece un líquido reductor de gases de escape. Tras ser tratados dichos gases a lo largo de la segunda cámara/depósito, estos se hacen pasar a través de la tercera cámara/depósito, dispuesta superiormente y conectada en serie con dicha segunda cámara/depósito que se remata por su extremidad opuesta en la correspondiente salida o escape de humos depurados. Para evitar la pérdida de fluido reductor de gases, se ha previsto que en la tercera cámara/depósito se incluyan uno o mas filtros, preferentemente dos, debidamente separados entre sí, que solo dejen pasar los gases, de modo que los líquidos que hubieran podido acceder a dicha tercera cámara/depósito, se vuelven a recircular a la segunda
cámara/depósito, por medio de las correspondientes bombas asociadas a respectivas conducciones externas que intercomunican estas cámaras. Solo resta señalar por último que, para mejorar el flujo de los gases, en la primera cámara/depósito, la de admisión de los gases de escape podría incluirse un compresor que fuerce aún mas dicho flujo de gases. A partir de esta estructuración se consigue un dispositivo de depuración de gases de escape de bajo coste, funcionamiento sencillo y fácilmente instalable debido a su bajo peso. BREVE DESCRIPCIÓN DE LOS DIBUJOS Para complementar la descripción que seguidamente se va a realizar y con objeto de ayudar a una mejor comprensión de las características del invento, de acuerdo con un ejemplo preferente de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, un juego de planos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente: La figura 1.- Muestra una vista en perspectiva de un dispositivo para la depuración de gases de escape realizado de acuerdo con el objeto de la presente invención. La figura 2.- Muestra una vista en perspectiva lateral del dispositivo de la figura anterior. La figura 3.- Muestra la estructura interna y disposición de filtros en el seno de la primera cámara. La figura 4.- Muestra la estructura interna y disposición de filtros en el seno de la segunda cámara. La figura 5.- La figura 3.- Muestra la estructura interna y disposición de filtros en el seno de la tercera y última cámara.
REALIZACIÓN PREFERENTE DE LA INVENCIÓN A la vista de las figuras reseñadas, puede observarse como en el dispositivo para la depuración de gases de escape participan tres cámaras o depósitos alargados horizontalmente, dispuestos paralelamente, y conectados en serie. La primera de las cámaras/depósitos (1) presenta un diámetro menor que las otras dos, como por ejemplo de 5 centímetros, incluyendo en uno de sus extremos una toma o entrada de gases (2) a tratar, provenientes del motor del vehículo. Los gases atraviesan dicha cámara por la propia presión con que salen del motor, si bien podrían impulsarse adicionalmente mediante un compresor instalado en dicha primera cámara/depósito (1), cámara que se remata por su extremo opuesto en un codo (3) que comunica con la segunda cámara/depósito (4), la de mayor diámetro de las tres, en el ejemplo elegido con un diámetro de 20 centímetros, y que se sitúa inferiormente a la primera cámara, definiendo un depósito en el que se establece un líquido reductor de gases de escape que ocupa parcialmente dicha cámara, para permitir el paso de los gases a depurar a su través, incluyendo una filtro a base de chapas perforadas (11) separadas mediante varillas distanciadoras (12). Este líquido puede introducirse a través de una toma (5) situada en la primera cámara/depósito (1), ya que esta comunica directamente con la segunda cámara/depósito (4) situada inferiormente, pudiéndose purgar dicha segunda cámara/depósito (4) a través de una salida de purgado (6). En este segunda cámara, y tal y como muestra la figura 4, se dispondrá un filtro a base de chapas perforadas (11) entre las que se dispone un filtro de goma (13). Tal y como se ha dicho con anterioridad, tras ser tratados los gases a lo largo de la segunda cámara/depósito (4), estos se hacen pasar a través de la tercera cámara/depósito (7), dispuesta por encima de la segunda cámara/depósito (4) y conectada en serie con ella, la cual se remata por su extremidad opuesta en la correspondiente salida (8) o escape de humos depurados. Para evitar la pérdida de fluido reductor de gases, se ha previsto que en la tercera
cámara/depósito se incluyan filtros que solo dejen pasar los gases, también a base de chapas perforadas (11) entre las que se dispone un filtro de goma (13), de modo que los líquidos que hubieran podido acceder a dicha tercera cámara/depósito (7), se vuelven a recircular a la segunda cámara/depósito (4), por medio de la correspondiente bomba (9) asociada a una conducción externa (9) que intercomunican estas cámaras. A partir de esta estructuración, los elementos más pesados de los gases de escape se catalizarán y solamente saldrán a través de la salida (8) los gases perfectamente depurados. Solo resta señalar por último que, la segunda cámara/depósito (4) la mas inferior, incorporará un reloj o nivel (15) mediante el que se pueda comprobar el volumen de líquido depurador en el seno de dicha cámara,
DEVICE FOR EXHAUST GAS CLEANING OBJECT OF THE INVENTION The present invention refers to a device for exhaust gas purification whose obvious purpose is to reduce polluting emissions from an internal combustion engine. The invention is therefore located in the field of internal combustion engines, preferably for the automotive sector, without ruling out other industrial sectors. BACKGROUND OF THE INVENTION In the current state of the art, different types of exhaust gas purification systems for an internal combustion engine are known. In general, these systems are based on an exhaust gas purification apparatus consisting of a reduction catalytic converter that is arranged in an exhaust pipe of the engine and a liquid reducing agent, in response to the operating state of the engine, is injected to be supplied to the exhaust gases at a position upstream of the reduction catalytic converter, to produce a catalytic reduction reaction between the NOx in the exhaust gases and the liquid reducing agent, thereby purifying the NOx into non-harmful components . As a liquid reducing agent, an aqueous solution is usually used, which is hydrolyzed by the heat of the exhaust gases and the steam in the exhaust gases. However, the level of pollutant reduction of these systems is still insufficient, given the large volume of vehicles with this type of engines that still exist. The applicant is unaware of the existence of a device with the characteristics that will be described below. EXPLANATION OF THE INVENTION The recommended exhaust gas purification device fully satisfactorily resolves the aforementioned problems, improving the operation of the systems currently known in the state of the art. To this end, the device of the invention is made up of three horizontally elongated chambers or tanks, arranged in parallel, connected to each other, and of different diameters. The first of the smaller diameter chambers/reservoirs includes at one end an intake or inlet of gases to be treated, coming from the vehicle's engine. The gases pass through said chamber due to the pressure with which they leave the engine, so that the aforementioned first chamber/reservoir ends at its other end in an elbow that communicates with the second chamber/reservoir, the one with the largest diameter of the three, located below, and within which an exhaust gas reducing liquid is established. After said gases are treated along the second chamber/reservoir, they are passed through the third chamber/reservoir, arranged above and connected in series with said second chamber/reservoir, which ends at its opposite end in the corresponding outlet or exhaust of purified smoke. To avoid the loss of gas reducing fluid, it has been planned that the third chamber/tank will include one or more filters, preferably two, duly separated from each other, which only allow the gases to pass through, so that the liquids that could have access said third chamber/deposit, they are recirculated to the second chamber/reservoir, by means of the corresponding pumps associated with respective external pipes that intercommunicate these chambers. Finally, it only remains to be noted that, to improve the gas flow, in the first chamber/tank, the exhaust gas intake chamber, a compressor could be included that further forces said gas flow. From this structure, a low-cost exhaust gas purification device is achieved, simple in operation and easily installed due to its low weight. BRIEF DESCRIPTION OF THE DRAWINGS To complement the description that will be made below and in order to help a better understanding of the characteristics of the invention, in accordance with a preferred example of practical embodiment thereof, it is attached as an integral part of said description , a set of plans where, for illustrative and non-limiting purposes, the following has been represented: Figure 1.- Shows a perspective view of a device for exhaust gas purification made in accordance with the object of the present invention . Figure 2.- Shows a side perspective view of the device of the previous figure. Figure 3.- Shows the internal structure and arrangement of filters within the first chamber. Figure 4.- Shows the internal structure and arrangement of filters within the second chamber. Figure 5.- Figure 3.- Shows the internal structure and arrangement of filters within the third and last chamber. PREFERRED EMBODIMENT OF THE INVENTION In view of the figures outlined, it can be seen how the device for exhaust gas purification involves three horizontally elongated chambers or tanks, arranged in parallel, and connected in series. The first of the chambers/reservoirs (1) has a smaller diameter than the other two, such as 5 centimeters, including at one end an intake or inlet for gases (2) to be treated, coming from the vehicle's engine. The gases pass through said chamber due to the pressure with which they leave the engine, although they could be additionally driven by a compressor installed in said first chamber/tank (1), a chamber that ends at its opposite end in an elbow (3) that communicates with the second chamber/tank (4), the one with the largest diameter of the three, in the chosen example with a diameter of 20 centimeters, and which is located below the first chamber, defining a tank in which a reducing liquid is established. of exhaust gases that partially occupies said chamber, to allow the passage of the gases to be purified through it, including a filter made of perforated sheets (11) separated by spacer rods (12). This liquid can be introduced through an inlet (5) located in the first chamber/tank (1), since it communicates directly with the second chamber/tank (4) located below, and said second chamber/tank (4) can be purged. through a purge outlet (6). In this second chamber, and as shown in Figure 4, there will be a filter made of perforated sheets (11) between which a rubber filter (13) is arranged. As stated previously, after the gases are treated along the second chamber/tank (4), they are passed through the third chamber/tank (7), arranged above the second chamber. /tank (4) and connected in series with it, which ends at its opposite end in the corresponding outlet (8) or purified smoke exhaust. To avoid the loss of gas reducing fluid, it has been planned that in the third chamber/tank, filters are included that only allow gases to pass through, also based on perforated sheets (11) between which a rubber filter (13) is arranged, so that the liquids that could have accessed said third chamber/tank (7), are recirculated to the second chamber/tank (4), by means of the corresponding pump (9) associated with an external conduit (9) that intercommunicates these chambers. From this structuring, the heaviest elements of the exhaust gases will be catalyzed and only the perfectly purified gases will come out through the outlet (8). Finally, it only remains to be noted that the second chamber/reservoir (4), the lowest one, will incorporate a clock or level (15) through which the volume of purifying liquid inside said chamber can be checked.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/ES2022/070695 WO2024089299A1 (en) | 2022-10-27 | 2022-10-27 | Device for exhaust gas purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/ES2022/070695 WO2024089299A1 (en) | 2022-10-27 | 2022-10-27 | Device for exhaust gas purification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024089299A1 true WO2024089299A1 (en) | 2024-05-02 |
Family
ID=90830153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES2022/070695 WO2024089299A1 (en) | 2022-10-27 | 2022-10-27 | Device for exhaust gas purification |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2024089299A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120222413A1 (en) * | 2011-03-03 | 2012-09-06 | Michael Golin | Poka-Yoke Mounting System for an Exhaust Treatment Device |
| US20140130760A1 (en) * | 2011-10-06 | 2014-05-15 | Johnson Matthey Public Limited Company | Oxidation catalyst for internal combustion engine exhaust gas treatment |
| US20170204765A1 (en) * | 2014-10-06 | 2017-07-20 | Yanmar Co., Ltd. | Engine device |
| WO2019055922A1 (en) * | 2017-09-15 | 2019-03-21 | Eberspaecher North America, Inc. | Exhaust aftertreatment apparatus |
-
2022
- 2022-10-27 WO PCT/ES2022/070695 patent/WO2024089299A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120222413A1 (en) * | 2011-03-03 | 2012-09-06 | Michael Golin | Poka-Yoke Mounting System for an Exhaust Treatment Device |
| US20140130760A1 (en) * | 2011-10-06 | 2014-05-15 | Johnson Matthey Public Limited Company | Oxidation catalyst for internal combustion engine exhaust gas treatment |
| US20170204765A1 (en) * | 2014-10-06 | 2017-07-20 | Yanmar Co., Ltd. | Engine device |
| WO2019055922A1 (en) * | 2017-09-15 | 2019-03-21 | Eberspaecher North America, Inc. | Exhaust aftertreatment apparatus |
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