CN219932292U - Tail gas purifier for explosion-proof engine - Google Patents
Tail gas purifier for explosion-proof engine Download PDFInfo
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- CN219932292U CN219932292U CN202321013408.3U CN202321013408U CN219932292U CN 219932292 U CN219932292 U CN 219932292U CN 202321013408 U CN202321013408 U CN 202321013408U CN 219932292 U CN219932292 U CN 219932292U
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
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- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 3
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- 238000002485 combustion reaction Methods 0.000 abstract description 16
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000000746 purification Methods 0.000 abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
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- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model relates to the technical field of tail gas purification of explosion-proof engines, and provides a tail gas purifier for an explosion-proof engine, which comprises a lower shell and an upper shell, wherein the lower shell is arranged below the upper shell and is in threaded connection with a plurality of fastening screws to form a shell, the front end of the shell is fixedly connected with a front flange, the rear end of the shell is fixedly connected with a rear flange, an expansion gasket is arranged in the shell, a plurality of ceramic carriers are filled in the expansion gasket, one side, close to the front flange, of the top of the upper shell is in threaded connection with a fixing bolt, and one end, close to the front flange, in the shell is provided with a purification device; when the combustion exhaust gas of the engine flows through the surface of the honeycomb ceramic carrier, the device generates corresponding chemical reaction with the chemical coating on the wall surface of the ceramic carrier, and chemical harmful components HC, CO and NOx in the combustion exhaust gas are finally converted into harmless emissions such as carbon dioxide (CO 2), water vapor (H2O), nitrogen (N2) and the like.
Description
Technical Field
The utility model relates to the technical field of tail gas purification of explosion-proof engines, in particular to a tail gas purifier for an explosion-proof engine.
Background
The explosion-proof engine is a closed diesel generator set which seals all possible places where sparks are generated. Namely in dangerous environments such as: when a diesel generator set is needed in flammable and explosive places (all dangerous places such as coal mines, gas stations, oil refineries, flour cotton flax processing factories and the like), the explosion-proof diesel generator set is needed for safe production. The explosion-proof diesel generator set can not spray an ignition spark, can not generate sparks, and the high-temperature smoke exhaust pipe is subjected to strict binding treatment by asbestos, and a fireproof cooling isolation device is also arranged for users with strict requirements.
However, explosion-proof engines produce a large amount of exhaust gas during operation, and hydrocarbons and nitrogen oxides in the exhaust gas react chemically under the effect of sunlight to generate ozone, which combines with other components in the atmosphere to form photochemical smog. The harm to health is mainly manifested by eye irritation and pinkeye; stimulating nose, throat, trachea and lungs, causing chronic respiratory disease. Photochemical smog can make trees die, and crops are greatly reduced in yield; can reduce the visibility of the atmosphere and obstruct traffic, so that a purifier needs to be added at the discharge position to ensure that the exhaust gas reaches the discharge standard.
Through searching, the prior patent (application number: CN 202210005396.3) discloses an exhaust purifier for an explosion-proof engine, which comprises a shell, wherein the shell is of a cavity structure, a porous dense grating is arranged in the shell, an air inlet, an air passage, an air outlet, a water inlet and a water outlet are formed in the shell, the air inlet is communicated with the air outlet of a diesel supercharger, the air inlet and the air outlet are communicated with the two ends of the air passage of the porous dense grating, an air inlet passage of the porous dense grating is connected with the cavity of the shell, the water inlet and the water outlet are respectively arranged at the two ends of a cooling water passage of the porous dense grating, and the air passage is not communicated with the cooling water passage.
The technical scheme is that the porous dense grid is provided with the air passage channels for capturing particles and the waterway channels for cooling, the porous dense grid is formed by stacking a plurality of layers of aluminum sheets in a staggered and vertical mode, aluminum sheets of each layer of aluminum sheet layer are arranged on a bottom plate to form a porous dense grid structure, a diesel engine is provided with high-temperature tail gas with carbon particles, aluminum sheets meeting low temperature, carbon particles in the tail gas are captured and collected by the aluminum sheets with larger specific surface area, meanwhile, water vapor in the tail gas is suddenly quenched and condensed when meeting low-temperature aluminum sheets, condensed water is separated out, the aluminum sheets are flushed along with the atmospheric flow of the tail gas, the carbon particles captured on the surfaces of the aluminum sheets are flushed away from the aluminum sheets together, finally water with the carbon particles flows out from the tail part of the air passage, the capturing and regeneration can be synchronously carried out, and the porous dense grid structure is completely different from the mode of heating the prior art, and is special for diesel engines under mines, and has high explosion-proof safety performance and simple structure.
However, the following problems are found in the implementation related art: when the device is used for purifying the combustion exhaust, the flowing exhaust can not be fully captured and collected by the aluminum sheets with larger specific surface areas after the exhaust flows through the porous dense grids, and the contact reaction area of the exhaust and the porous dense grids is smaller, so that harmful substances in the combustion exhaust can not be effectively converted in the shell, the purifying effect is reduced, and the purified exhaust still contains chemical harmful components such as HC, CO, NOx and the like, so that the purification is incomplete.
Disclosure of Invention
The utility model provides an exhaust purifier for an explosion-proof engine, which solves the problems that harmful substances in combustion exhaust cannot be effectively converted in a shell and the purifying effect is reduced due to the small contact reaction area of the exhaust and a purifying carrier in the prior art.
The technical scheme of the utility model is as follows: the utility model provides an explosion-proof tail gas cleaner for engine, includes casing and last casing down, the casing is located down in the casing below, and constitutes the casing through a plurality of fastening screw threaded connection, the front end fixedly connected with front flange of casing, the rear end fixedly connected with rear flange of casing, be equipped with the inflation gasket in the casing, the intussuseption of inflation gasket intussuseption is filled with a plurality of ceramic support, one side spiro union that the top of going up the casing is close to front flange is equipped with fixing bolt, fixing bolt's bottom runs through to in the casing, and tip fixed mounting has temperature sensor, the one end that is close to front flange in the casing is equipped with purifier.
Preferably, the purification device comprises a filter disc, external threads are arranged on two sides of the outer surface of the filter disc, and a filter screen is fixedly clamped on the inner side wall of the filter disc.
Preferably, a round hole which is matched with the outer diameter of the filter disc is formed in the surface of the front flange, an inner thread which is matched with the outer thread is formed in the inner side wall of the round hole, and the filter disc is in threaded clamping connection with the inner thread on the front flange through the outer thread.
Preferably, both ends of the ceramic carrier are provided with polygonal through holes penetrating through the cavity, a plurality of ceramic carriers are closely arranged in the expansion gasket, and a honeycomb structure is formed on the end face of the expansion gasket.
Preferably, the inner surface of the ceramic carrier is uniformly coated with a catalyst coating, and the material of the catalyst coating is noble metal platinum particles.
Preferably, the expansion gasket is composed of expansion mica, aluminum silicate fiber and an adhesive, and the outer surface of the expansion gasket is closely attached to the inner side walls of the lower shell and the upper shell respectively.
Preferably, the surfaces of the two ends of the front flange and the rear flange are provided with mounting holes, and the middle surfaces of the front flange and the rear flange are respectively provided with a tail gas inlet and a gas outlet.
Preferably, the lower shell and the upper shell are welded by stainless steel plate materials.
The working principle and the beneficial effects of the utility model are as follows:
1. in the present utility model; when engine combustion exhaust gas enters the shell through the exhaust gas inlet and flows through the surface of the honeycomb ceramic carrier, chemical harmful components HC, CO and NOx in the combustion exhaust gas can generate corresponding chemical reactions with chemical coatings on the wall surface of the ceramic carrier, and finally the chemical harmful components HC, CO and NOx are converted into harmless emissions such as carbon dioxide (CO 2), water vapor (H2O) and nitrogen (N2), so that the flowing exhaust gas can have more opportunities to flow through the surface of the ceramic carrier coated with the catalyst, the ceramic carrier forms a honeycomb structure on the end surface of the expansion gasket, the reaction area of the exhaust gas flowing through is increased, and harmful substances in the combustion exhaust gas are effectively converted in the shell, and the purification effect is further improved.
2. In the present utility model; the expansion gasket expands in volume when heated and contracts only partially when cooled, so that gaps between the shell and the ceramic carrier are completely expanded and sealed, and the functions of sealing, heat preservation and fixing the ceramic carrier are achieved, so that damage to the ceramic carrier caused by vibration, heat deformation and other reasons is prevented.
3. In the present utility model; after engine combustion exhaust gas gets into the casing by the tail gas import, particulate matter impurity that contains in the tail gas after the filter screen preliminary filtration is adsorbed on the filter screen surface, avoids getting into in the ceramic support and causes the jam, and filter disc and front flange are detachable threaded connection, convenient to detach clear up the filter screen, improved equipment life.
Drawings
The utility model will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic diagram illustrating the assembly of the purification device and the front flange according to the present utility model;
FIG. 3 is an end elevational view of a ceramic carrier according to the present utility model;
FIG. 4 is a diagram showing the construction of the appearance of the device according to the present utility model;
FIG. 5 is a schematic view of the flow direction of the exhaust gas from engine combustion according to the present utility model;
in the figure: 1. a lower housing; 2. an upper housing; 3. a front flange; 4. a rear flange; 5. an expansion pad; 6. a ceramic carrier; 7. a fixing bolt; 8. a temperature sensor; 9. a purifying device; 901. a filter disc; 902. an external thread; 903. a filter screen; 10. an internal thread; 11. a mounting hole; 12. polygonal through holes.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides an explosion-proof tail gas cleaner for engine, including lower casing 1 and last casing 2, lower casing 1 locates last casing 2 below, and constitute the casing through a plurality of fastening screw threaded connection, flange 3 before the front end fixedly connected with of casing, flange 4 behind the rear end fixedly connected with of casing, be equipped with expansion gasket 5 in the casing, expansion gasket 5 intussuseption is filled with a plurality of ceramic support 6, one side spiro union that the top of going up casing 2 is close to flange 3 is equipped with fixing bolt 7, fixing bolt 7's bottom runs through to in the casing, and tip fixed mounting has temperature sensor 8, the one end that is close to flange 3 in the casing is equipped with purifier 9.
In this embodiment, the purifying device 9 includes a filter disc 901, external threads 902 are disposed on two sides of an outer surface of the filter disc 901, a filter screen 903 is fixedly clamped on an inner side wall of the filter disc 901, a circular hole which is matched with an outer diameter of the filter disc 901 in size is formed in a surface of the front flange 3, an internal thread 10 which is matched with the external threads 902 is disposed on an inner side wall of the circular hole, and the filter disc 901 is in threaded clamping connection with the internal threads 10 on the front flange 3 through the external threads 902; after engine combustion exhaust gas enters the shell from the exhaust gas inlet, particulate impurities contained in the exhaust gas after preliminary filtration of the filter screen 903 are adsorbed on the surface of the filter screen 903, so that blockage caused by entering the ceramic carrier 6 is avoided, the filter disc 901 is in detachable threaded connection with the front flange 3, the filter screen 903 is cleaned conveniently, and the service life of equipment is prolonged.
In this embodiment, polygonal through holes 12 penetrating through the cavity are formed at two ends of the ceramic carrier 6, a plurality of ceramic carriers 6 are closely arranged in the expansion gasket 5, a honeycomb structure is formed on the end face of the expansion gasket 5, the inner surface of the ceramic carrier 6 is uniformly coated with a catalyst coating, the catalyst coating is made of precious metal platinum particles, the expansion gasket 5 is composed of expansion mica, aluminum silicate fibers and an adhesive, and the outer surfaces of the expansion gasket 5 are closely attached to the inner side walls of the lower shell 1 and the upper shell 2 respectively; the expansion gasket 5 expands in volume when heated and contracts only partially when cooled, so that the gap between the shell and the ceramic carrier is completely expanded and sealed, and the expansion gasket plays roles of sealing, insulating and fixing the ceramic carrier 6, so as to prevent damage to the ceramic carrier 6 caused by vibration, thermal deformation and other reasons.
In this embodiment, the two end surfaces of the front flange 3 and the rear flange 4 are provided with mounting holes 11, and the middle surfaces of the front flange 3 and the rear flange 4 are respectively provided with a tail gas inlet and a gas outlet, when engine combustion exhaust gas enters the housing through the tail gas inlet and flows through the surface of the honeycomb ceramic carrier 6, and when the temperature of the carrier surface reaches a specific temperature range, chemical harmful components HC, CO and NOx in the combustion exhaust gas can generate corresponding chemical reactions with chemical coatings on the wall surface of the ceramic carrier 6, the processes are divided into two types of oxidation reactions of HC and CO and reduction reactions of NOx, and finally, the exhaust gas is converted into harmless emissions such as carbon dioxide (CO 2), water vapor (H2O) and nitrogen (N2).
In order to make the flowing exhaust gas have more opportunities to flow through the surface of the ceramic carrier 6 coated with the catalyst, the ceramic carrier 6 forms a honeycomb structure on the end surface of the expansion gasket 5, so that the flow reaction area of the exhaust gas is increased, and harmful substances in the combustion exhaust gas are effectively converted in the shell, and the purification effect is further improved.
Wherein, the lower shell 1 and the upper shell 2 are welded by adopting stainless steel plate materials so as to prevent the ceramic carrier 6 from being blocked due to the falling of oxide skin.
The working principle and the using flow of the utility model are as follows: when the exhaust purifier for the explosion-proof engine is used, the front flange 3 is fixedly arranged on an exhaust gas discharge pipeline of the engine through the mounting holes 11, after engine combustion exhaust gas enters the shell from the exhaust gas inlet, particulate matter impurities contained in the exhaust gas are adsorbed on the surface of the filter screen 903 after preliminary filtration by the filter screen 903, the exhaust gas is prevented from entering the ceramic carrier 6 to cause blockage, the rest exhaust gas enters the ceramic carrier 6 through the polygonal through holes 12 and flows through the surface of the honeycomb ceramic carrier 6, when the temperature of the surface of the carrier reaches a specific temperature range, chemical harmful components HC, CO and NOx in the combustion exhaust gas can generate corresponding chemical reactions with chemical coatings on the wall surface of the ceramic carrier 6, the processes of the chemical harmful components HC, CO and NOx are divided into two types of oxidation reactions of HC and CO and reduction reactions of NOx, and finally the exhaust gas is converted into harmless emissions such as carbon dioxide (CO 2), water vapor (H2O) and nitrogen (N2), and the like, and finally the harmful emissions are discharged through the gas discharge port on the rear flange 4.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (8)
1. The utility model provides an explosion-proof tail gas cleaner for engine, includes casing (1) and last casing (2), its characterized in that down: the utility model discloses a lower casing (1) locates last casing (2) below, and constitutes the casing through a plurality of fastening screw threaded connection, flange (3) before the front end fixedly connected with of casing, flange (4) behind the rear end fixedly connected with of casing, be equipped with expansion gasket (5) in the casing, expansion gasket (5) intussuseption is filled with a plurality of ceramic support (6), one side spiro union that the top of going up casing (2) is close to flange (3) is equipped with fixing bolt (7), in the bottom of fixing bolt (7) runs through to the casing, and tip fixed mounting has temperature sensor (8), the one end that is close to flange (3) in the casing is equipped with purifier (9).
2. An exhaust gas purifier for an explosion-proof engine according to claim 1, wherein: the purifying device (9) comprises a filter disc (901), external threads (902) are respectively arranged on two sides of the outer surface of the filter disc (901), and a filter screen (903) is fixedly clamped on the inner side wall of the filter disc (901).
3. An exhaust gas purifier for an explosion-proof engine according to claim 2, wherein: the surface of the front flange (3) is provided with a round hole which is matched with the outer diameter of the filter disc (901), the inner side wall of the round hole is provided with an internal thread (10) which is matched with the external thread (902), and the filter disc (901) is in threaded clamping connection with the internal thread (10) on the front flange (3) through the external thread (902).
4. An exhaust gas purifier for an explosion-proof engine according to claim 1, wherein: the two ends of the ceramic carrier (6) are provided with polygonal through holes (12) penetrating through the cavity, the ceramic carriers (6) are closely arranged in the expansion gasket (5), and a honeycomb structure is formed on the end face of the expansion gasket (5).
5. An exhaust gas purifier for an explosion-proof engine according to claim 1, wherein: the inner surface of the ceramic carrier (6) is uniformly coated with a catalyst coating, and the material of the catalyst coating is noble metal platinum particles.
6. An exhaust gas purifier for an explosion-proof engine according to claim 1, wherein: the expansion gasket (5) is composed of expansion mica, aluminum silicate fibers and an adhesive, and the outer surface of the expansion gasket (5) is tightly attached to the inner side walls of the lower shell (1) and the upper shell (2) respectively.
7. An exhaust gas purifier for an explosion-proof engine according to claim 1, wherein: mounting holes (11) are formed in the surfaces of the two ends of the front flange (3) and the rear flange (4), and a tail gas inlet and a gas outlet are respectively formed in the middle surfaces of the front flange (3) and the rear flange (4).
8. An exhaust gas purifier for an explosion-proof engine according to claim 1, wherein: the lower shell (1) and the upper shell (2) are welded by adopting stainless steel plate materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321013408.3U CN219932292U (en) | 2023-04-28 | 2023-04-28 | Tail gas purifier for explosion-proof engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321013408.3U CN219932292U (en) | 2023-04-28 | 2023-04-28 | Tail gas purifier for explosion-proof engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219932292U true CN219932292U (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321013408.3U Active CN219932292U (en) | 2023-04-28 | 2023-04-28 | Tail gas purifier for explosion-proof engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219932292U (en) |
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2023
- 2023-04-28 CN CN202321013408.3U patent/CN219932292U/en active Active
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