CN216110924U - A integrated tail gas clean-up system of general type case formula for generating set - Google Patents
A integrated tail gas clean-up system of general type case formula for generating set Download PDFInfo
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- CN216110924U CN216110924U CN202122768655.1U CN202122768655U CN216110924U CN 216110924 U CN216110924 U CN 216110924U CN 202122768655 U CN202122768655 U CN 202122768655U CN 216110924 U CN216110924 U CN 216110924U
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000004202 carbamide Substances 0.000 claims abstract description 41
- 238000000746 purification Methods 0.000 claims abstract description 32
- 238000001179 sorption measurement Methods 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 239000013618 particulate matter Substances 0.000 claims abstract description 13
- 238000007254 oxidation reaction Methods 0.000 claims description 86
- 230000003647 oxidation Effects 0.000 claims description 85
- 230000003197 catalytic effect Effects 0.000 claims description 74
- 239000007789 gas Substances 0.000 claims description 74
- 239000003054 catalyst Substances 0.000 claims description 56
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 47
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 44
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 36
- 238000010438 heat treatment Methods 0.000 claims description 35
- 238000002156 mixing Methods 0.000 claims description 32
- 238000004806 packaging method and process Methods 0.000 claims description 30
- 238000006722 reduction reaction Methods 0.000 claims description 29
- 230000009467 reduction Effects 0.000 claims description 28
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- 238000005538 encapsulation Methods 0.000 claims description 22
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- 238000005485 electric heating Methods 0.000 claims description 12
- 229910021529 ammonia Inorganic materials 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000006555 catalytic reaction Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 6
- 229930195733 hydrocarbon Natural products 0.000 abstract description 6
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 6
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- 229910052799 carbon Inorganic materials 0.000 description 9
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- JCXJVPUVTGWSNB-UHFFFAOYSA-N Nitrogen dioxide Chemical compound O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
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- 230000007935 neutral effect Effects 0.000 description 3
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- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000003225 biodiesel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The utility model relates to a universal box type integrated tail gas purification system for a generator set, which belongs to the technical field of tail gas purification and comprises an air inlet connecting pipe, a particulate matter electrostatic adsorption device, a purification device and an air outlet pipeline, aiming at the problems of large difference of fuel tail gas purification requirements, wide power range, limited actual installation space and the like of different types of generator sets, the utility model realizes the comprehensive and efficient purification of pollutants such as particulate matters, nitric oxides, hydrocarbons, carbon monoxide and the like by designing a urea hot mixed injection pipeline, an optimization device integrated structure and the integrated coupling of multiple purification technologies, has the purification efficiency independent of exhaust temperature, occupies small space, improves the applicability to different fuels, generator sets with different power sections and different installation environments, greatly improves the universality and application range of products, and improves the universality of the products, greatly reduces the customization cost of the product.
Description
Technical Field
The utility model belongs to the technical field of tail gas purification, and particularly relates to a universal box type integrated tail gas purification system for a generator set.
Background
The internal combustion generator industry energy structure is mainly based on high carbon fossil energy (coal, petroleum and the like), and is transformed to carbon neutral energy (biodiesel, biogas, biological hydrogen production and the like) and low carbon energy (natural gas, alcohol ether fuel and the like), and the internal combustion generator energy structure is diversified. The emission characteristic of the carbon neutral biodiesel generator is similar to that of the traditional diesel generator, and particulate matters, nitrogen oxides, carbon monoxide and hydrocarbons in tail gas need to be comprehensively purified; for other carbon neutral energy and low-carbon energy internal combustion engines, the emission of the tail gas is cleaner (especially the emission of particulate matters) compared with that of the traditional diesel generating set, but the emission of nitrogen oxides is still higher. And with the upgrade of national emission regulations, the tightening of local atmospheric treatment requirements and the proposal of distant targets of 'carbon peak reaching' and 'carbon neutralization', the comprehensive and efficient treatment of various pollutants discharged by the tail gas of the internal combustion engine is imperative.
In the prior art, the technology of spraying water or purifying liquid to purify the tail gas of the generator set by discharging nitric oxide exists, the used water or purifying liquid has the hidden trouble of secondary pollution, and the purifying system needs to construct a complete water liquid circulating system, so the modification amount of an installation site is large.
Disclosure of Invention
In order to overcome the problems in the background art, the utility model provides a general box type integrated tail gas purification system for a generator set, which can efficiently purify various tail gas pollutants (particulate matters, carbon monoxide, hydrocarbons and nitrogen oxides) in tail gas of different types of generators, has higher integration and universality, reduces the customized cost of products and improves the installation and application range of the products.
In order to realize the purpose, the utility model is realized by the following technical scheme:
the utility model provides an integrated tail gas clean system of general type case formula for generating set is including admitting air connecting pipe 1, particulate matter electrostatic adsorption device 2, purifier 3, pipeline 4 of giving vent to anger, the end of giving vent to anger of admitting air connecting pipe 1 be connected with particulate matter electrostatic adsorption device 2's air inlet, particulate matter electrostatic adsorption device 2's gas outlet is connected with purifier 3's air inlet, purifier 3's gas outlet and pipeline 4 of giving vent to anger are connected.
Further, purifier 3 include that heat pipe way 10, catalytic oxidation room 11, catalytic reduction room 12, outlet duct 13, the 14 purifying box 53 of urea heat mixing arrangement enter, purifying box 53 in install catalytic oxidation room 11, catalytic reduction room 12 is installed at the top of catalytic oxidation room 11, intercommunication between catalytic oxidation room 11 and the catalytic reduction room 12, the air inlet of seting up on the gas outlet of heat pipe way 10 that admits air and the lateral wall of catalytic oxidation room 11 is connected, the air inlet and the gas outlet of seting up on the lateral wall of catalytic reduction room 12 of outlet duct 13 and are connected, the ammonia outlet that urea heat mixing arrangement 14 produced is located between catalytic oxidation room 11, the catalytic reduction room 12.
Further, the catalytic oxidation chamber 11 comprises an oxidation catalyst component layer 15, a catalytic particle trap component layer 16, an upstream nitrogen oxide sensor 17, a temperature sensor II 18, a pressure sensor I19, a temperature sensor III 20, a pressure sensor II 21, a porous airflow dispersion plate 22 and a catalytic oxidation chamber box body 23, wherein the porous airflow dispersion plate 22 is installed at the lower part of an inner cavity of the catalytic oxidation chamber box body 23, an air inlet connected with the air inlet heating pipeline 10 is formed in the side wall of the catalytic oxidation chamber box body 23 on the lower side of the porous airflow dispersion plate 22, the oxidation catalyst component layer 15 fixed on the inner wall of the catalytic oxidation chamber box body 23 is installed on the upper side of the porous airflow dispersion plate 22, and the catalytic particle trap component layer 16 fixed on the inner wall of the catalytic oxidation chamber box body 23 is installed on the upper side of the oxidation catalyst component layer 15; a temperature sensor III 20 and a pressure sensor II 21 are arranged on the side wall of a catalytic oxidation chamber box body 23 between the oxidation catalyst component layer 15 and the catalytic type particle catcher component layer 16; an upstream nitrogen oxide sensor 17, a temperature sensor II 18 and a pressure sensor I19 are arranged on the side wall of a catalytic oxidation chamber box body 23 on the upper side of the catalytic type particle catcher component layer 16.
Further, oxidation catalyst converter subassembly layer 15 including encapsulation barrel I24, layer frame I25, liner 126, oxidation catalyst converter 27, layer frame I25 fixed mounting on the inner wall of catalytic oxidation chamber box 23, even be provided with the through-hole on layer frame I25, be equipped with round inner wall undercut on the lateral wall of encapsulation barrel I24, the bellied tongue of outer wall, install an encapsulation barrel I24 in every through-hole, in the tongue that encapsulation barrel I24 passes through on its lateral wall was fixed the through-hole on layer frame I25, oxidation catalyst converter 27's periphery is provided with liner 126, be provided with the round sand grip on liner 126's the outer wall, liner 126 is in the tongue of its sand grip joint on the inner wall of encapsulation barrel I24.
Further, catalysis type particle trap subassembly layer 16 include layer frame II 28, encapsulation barrel II 29, liner II 30, particle trap 31, layer frame II 28 fixed mounting on the inner wall of catalytic oxidation chamber box 23, even be provided with the through-hole on layer frame II 28, be equipped with round inner wall undercut on the lateral wall of encapsulation barrel II 29, the bellied tongue of outer wall, install an encapsulation barrel II 29 in every through-hole, in the through-hole on encapsulation barrel II 29 fixes on layer frame II 28 through the tongue on its lateral wall, particle trap 31's periphery is provided with liner II 30, be provided with the round sand grip on liner II 30's the outer wall, liner II 30 is through the tongue of its sand grip joint on the inner wall of encapsulation barrel II 29.
Further, catalytic reduction room 12 include lower floor selective reduction catalyst converter 32, upper selective reduction catalyst converter 33, catalytic reduction room box 34 install the top at catalytic oxidation room 11, install lower floor selective reduction catalyst converter 32 and upper selective reduction catalyst converter 33 from the supreme time down in the catalytic reduction room box 34, offer the gas outlet with outlet duct 13 intercommunication on the catalytic reduction room box 34 lateral wall of upper selective reduction catalyst converter 33 upside.
Further, lower floor's selective reduction catalyst converter 32 and upper selective reduction catalyst converter 33 structure unanimous, all include layer frame III 35, encapsulation barrel III 36, liner III 37, selective catalytic reduction ware III 38, layer frame III 35 fixed mounting on the inner wall of catalytic reduction room box 34, even being provided with the through-hole on layer frame III 35, be equipped with the protruding tongue of a round inner wall evagination, outer wall bulge on the lateral wall of layer frame III 35, install an encapsulation barrel III 36 in every through-hole, encapsulation barrel III 36 is fixed in the through-hole on layer frame III 35 through the tongue on its lateral wall, selective catalytic reduction ware III 38's periphery is provided with liner III 37, be provided with a round sand grip on liner III 37's the outer wall, liner II 30 is in the tongue on encapsulation barrel III's 36's inner wall through its sand grip joint.
Further, the urea thermal mixing device 14 comprises an air filter 39, a high-pressure exhaust fan 40, a fresh air pipeline 41, a fresh air heating pipe 42, a fresh air fin electric heating pipe 43, a temperature sensor IV 44, a urea mixing pipeline 45, a pressure difference sensor III 46, a urea aqueous solution spray head 47, an ammonia dispersion cavity 48 and an ammonia injection pipe 49, wherein an air outlet of the air filter 39 is connected with an air inlet of the high-pressure exhaust fan 40 through a pipeline, an air outlet of the high-pressure exhaust fan 40 is connected with an air inlet of the fresh air heating pipe 42 through the fresh air pipeline 41, the fresh air fin electric heating pipe 43 is installed in the fresh air heating pipe 42, the temperature sensor IV 44 is installed at an air outlet end of the fresh air heating pipe 42, the air outlet of the fresh air heating pipe 42 is connected with the air inlet of the urea mixing pipeline 45, the air inlet end connected with the air inlet of the urea mixing pipeline 45 is provided with the pressure difference sensor III 46, a urea aqueous solution spray head 47 is arranged on the urea mixing pipeline 45, an air outlet of the urea mixing pipeline 45 is connected with an air inlet of the ammonia gas dispersing cavity 48, an air outlet of the ammonia gas dispersing cavity 48 is connected with an ammonia gas injection pipe 49, and the ammonia gas injection pipe 49 is arranged between the catalytic oxidation chamber 11 and the catalytic reduction chamber 12.
The utility model has the beneficial effects that:
aiming at the problems of large difference of fuel tail gas purification requirements, wide power range, limited actual installation space and the like of different types of generator sets, the urea hot mixing injection pipeline, the optimization device integrated structure and the integration and coupling of multiple purification technologies are designed, so that the comprehensive and efficient purification of pollutants such as particulate matters, nitric oxides, hydrocarbons, carbon monoxide and the like is realized, the purification efficiency does not depend on the exhaust temperature, the occupied space of the system is small, the applicability to different fuels, generator sets with different power sections and different installation environments is improved, the universality and the application range of the product are greatly improved, and the product customization cost is greatly reduced due to the improvement of the universality of the product.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of the internal structure of the present invention;
FIG. 4 is a schematic diagram II of the internal structure of the present invention;
FIG. 5 is a schematic structural view of an oxidation catalyst assembly layer of the present invention;
FIG. 6 is a cross-sectional view of an oxidation catalyst assembly layer of the present invention;
FIG. 7 is a schematic diagram of a layer of a catalyzed particulate trap component of the present invention;
FIG. 8 is a cross-sectional view of a layer of a catalyzed particulate trap assembly of the present invention;
FIG. 9 is a cross-sectional view of a packaging cartridge III of the present invention;
FIG. 10 is a schematic view of a urea thermal mixing device according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a general type box integrated tail gas purification system for generating set includes air inlet connection pipe 1, particulate matter electrostatic adsorption device 2, purifier 3, pipeline 4 of giving vent to anger, air inlet connection pipe 1 give vent to anger the end and be connected with particulate matter electrostatic adsorption device 2's air inlet, particulate matter electrostatic adsorption device 2's gas outlet and purifier 3's air inlet are connected, purifier 3's gas outlet and pipeline 4 of giving vent to anger are connected. The tail gas of the generator enters a particulate matter electrostatic adsorption device 2 through an air inlet connecting pipe 1, the particulate matter electrostatic adsorption device 2 adsorbs and removes a part of particulate matters in the tail gas of the generator by adopting electrostatic induction to realize the pretreatment of the tail gas, and the particulate matter electrostatic adsorption device 2 adopts a line plate type electrostatic adsorber; the generator tail gas which is removed with a part of particles through the electrostatic adsorption device 2 of the particles enters the purification device 3 for advanced treatment, and the treated tail gas is discharged through the gas outlet pipeline 4.
In the utility model, the electrostatic adsorption device 2 for the particulate matters can adsorb and trap part of the particulate matters in the exhaust gas, the burden of the purification device 3 on the trapping and regeneration of the exhaust particulate matters is reduced, and for the generator set with lower original emission of the particulate matters, the electrostatic adsorption device 2 for the particulate matters can meet the requirement of the generator on the trapping and purification of the exhaust particulate matters, thereby greatly prolonging the service life of the purification device 3.
In the utility model, as shown in fig. 2 and 3, the purification device 3 includes an air inlet heating pipe 10, a catalytic oxidation chamber 11, a catalytic reduction chamber 12, an air outlet pipe 13, a urea thermal mixing device 14, and a purification box 53, the purification box 53 is internally provided with the catalytic oxidation chamber 11, the catalytic reduction chamber 12 is installed at the top of the catalytic oxidation chamber 11, the catalytic oxidation chamber 11 is communicated with the catalytic reduction chamber 12, an air outlet of the air inlet heating pipe 10 is connected with an air inlet formed on the side wall of the catalytic oxidation chamber 11, the air inlet pipe 13 and the air inlet are connected with an air outlet formed on the side wall of the catalytic reduction chamber 12, and an ammonia outlet generated by the urea thermal mixing device 14 is located between the catalytic oxidation chamber 11 and the catalytic reduction chamber 12. The generator tail gas treated by the particulate electrostatic adsorption device 2 enters the inlet heating pipeline 10, in the utility model, a tail gas fin electric heating pipe 50, a tail gas temperature sensor 51 and a tail gas pressure sensor 52 are arranged in the inlet heating pipeline 10, the generator tail gas treated by the particulate electrostatic adsorption device 2 is heated by the tail gas fin electric heating pipe 50, and meanwhile, the tail gas temperature sensor 51 and the tail gas pressure sensor 52 in the inlet heating pipeline 10 can ensure that the engine tail gas entering the purifying device 3 can reach corresponding temperature and certain pressure, so that the purifying device 3 can treat the engine tail gas.
As shown in fig. 3 and 4, the catalytic oxidation chamber 11 includes an oxidation catalyst component layer 15, a catalytic particle trap component layer 16, an upstream nox sensor 17, a temperature sensor ii 18, a pressure sensor i 19, a temperature sensor iii 20, a pressure sensor ii 21, a porous airflow dispersion plate 22, and a catalytic oxidation chamber box 23, the porous airflow dispersion plate 22 is installed at the lower part of the inner cavity of the catalytic oxidation chamber box 23, an air inlet connected with the air inlet heating pipeline 10 is opened on the sidewall of the catalytic oxidation chamber box 23 below the porous airflow dispersion plate 22, the oxidation catalyst component layer 15 fixed on the inner wall of the catalytic oxidation chamber box 23 is installed at the upper side of the porous airflow dispersion plate 22, and the catalytic particle trap component layer 16 fixed on the inner wall of the catalytic oxidation chamber box 23 is installed at the upper side of the oxidation catalyst component layer 15; a temperature sensor III 20 and a pressure sensor II 21 are arranged on the side wall of a catalytic oxidation chamber box body 23 between the oxidation catalyst component layer 15 and the catalytic type particle catcher component layer 16; an upstream nitrogen oxide sensor 17, a temperature sensor II 18 and a pressure sensor I19 are arranged on the side wall of a catalytic oxidation chamber box body 23 on the upper side of the catalytic type particle catcher component layer 16. After being heated by the air inlet heating pipeline 10, the tail gas of the engine enters the cavity of the catalytic oxidation chamber box body 23 on the lower side of the porous airflow dispersion plate 22, and then is dispersed by the porous airflow dispersion plate 22, so that the tail gas uniformly enters the oxidation catalyst component layer 15. As shown in fig. 5 and 6, the oxidation catalyst component layer 15 includes a packaging cylinder i 24, a layer frame i 25, a gasket 126, and an oxidation catalyst 27, wherein the layer frame i 25 is fixedly installed on the inner wall of the catalytic oxidation chamber box 23, through holes are uniformly formed in the layer frame i 25, a circle of convex grooves with concave inner walls and convex outer walls are formed in the side wall of the packaging cylinder i 24, a packaging cylinder i 24 is installed in each through hole, the packaging cylinder i 24 is fixed in the through hole in the layer frame i 25 through the convex groove in the side wall, the gasket 126 is arranged on the periphery of the oxidation catalyst 27, a circle of convex strips are arranged on the outer wall of the gasket 126, and the gasket 126 is clamped in the convex groove in the inner wall of the packaging cylinder i 24 through the convex strips; the engine exhaust gas heated by the inlet heating pipeline 10 enters the oxidation catalyst 27, and at a certain temperature, the engine exhaust gas undergoes the following reactions inside the oxidation catalyst 27:
CO + 1/2 O2 → CO2；
[HC] + O2 → CO2 +H2O；
NO + 1/2 O2 → NO2。
the carbon monoxide, hydrocarbon, nitric oxide and other substances in the engine exhaust are respectively converted into carbon dioxide, nitrogen dioxide and other substances, and the removal of the carbon monoxide, hydrocarbon and nitric oxide substances is realized.
Meanwhile, in the utility model, a circle of convex grooves with concave inner walls and convex outer walls are arranged on the side wall of the packaging barrel I24, a circle of convex strips are arranged on the outer wall of the liner 126 and can be quickly clamped in the convex grooves, and the packaging barrel I24 is directly placed in the through hole on the shelf I25 and is prevented from sliding downwards by the convex grooves, so that the packaging barrel I24 is stable, and the mounting mode is convenient to mount, dismount and replace.
As shown in fig. 6 and 7, the catalytic particle trap component layer 16 includes a layer frame ii 28, a packaging cylinder ii 29, a gasket ii 30 and a particle trap 31, the layer frame ii 28 is fixedly mounted on the inner wall of the catalytic oxidation chamber box 23, through holes are uniformly formed in the layer frame ii 28, a circle of convex grooves with an outer concave inner wall and a convex outer wall are formed in the side wall of the packaging cylinder ii 29, a packaging cylinder ii 29 is mounted in each through hole, the packaging cylinder ii 29 is fixed in the through holes in the layer frame ii 28 through the convex grooves in the side wall, the gasket ii 30 is arranged on the periphery of the particle trap 31, a circle of convex strips are arranged on the outer wall of the gasket ii 30, and the gasket ii 30 is clamped in the convex grooves in the inner wall of the packaging cylinder ii 29 through the convex strips. The exhaust gas treated by the oxidation catalyst component layer 15 enters the catalytic type particle trap component layer 16, and at a certain temperature, the exhaust gas reacts in the particle trap 31 as follows:
[C] + 2NO2 → 2NO+CO2。
As shown in fig. 10, the urea thermal mixing device 14 includes an air filter 39, a high-pressure exhaust fan 40, a fresh air pipeline 41, a fresh air heating pipe 42, a fresh air fin electric heating pipe 43, a temperature sensor iv 44, a urea mixing pipeline 45, a differential pressure sensor iii 46, a urea aqueous solution spray head 47, an ammonia dispersion cavity 48, and an ammonia injection pipe 49, an air outlet of the air filter 39 is connected with an air inlet of the high-pressure exhaust fan 40 through a pipeline, an air outlet of the high-pressure exhaust fan 40 is connected with an air inlet of the fresh air heating pipe 42 through the fresh air pipeline 41, the fresh air fin electric heating pipe 43 is installed in the fresh air heating pipe 42, the temperature sensor iv 44 is installed at an air outlet end of the fresh air heating pipe 42, the air outlet of the fresh air heating pipe 42 is connected with an air inlet of the urea mixing pipeline 45, the differential pressure sensor iii 46 is installed at an air inlet end connected with the air inlet of the urea mixing pipeline 45, a urea aqueous solution spray head 47 is arranged on the urea mixing pipeline 45, an air outlet of the urea mixing pipeline 45 is connected with an air inlet of the ammonia gas dispersing cavity 48, an air outlet of the ammonia gas dispersing cavity 48 is connected with an ammonia gas injection pipe 49, and the ammonia gas injection pipe 49 is arranged between the catalytic oxidation chamber 11 and the catalytic reduction chamber 12. Fresh air is introduced through the high-pressure exhaust fan 40, the fresh air is heated through the fresh air fin electric heating pipe 43 in the fresh air heating pipe 42, the heated fresh air enters the urea mixing pipeline 45, meanwhile, the urea aqueous solution is sprayed into the urea mixing pipeline 45 through the urea aqueous solution spray head 47, and under a certain temperature condition, the following reactions occur in the ammonia gas injection pipe 49 for the urea aqueous solution:
CH4N2O + H2O → 2NH3 + CO2。
the generated ammonia gas enters an ammonia gas dispersion cavity 48, the ammonia gas is dispersed in an ammonia gas injection pipe 49 through the ammonia gas dispersion cavity 48, then the ammonia gas is uniformly sprayed out from the ammonia gas injection pipe 49 to be mixed with tail gas discharged from the catalytic oxidation chamber 11, the tail gas mixed with the ammonia gas sequentially enters a lower selective reduction catalyst 32 and an upper selective reduction catalyst 33 of the catalytic reduction chamber 12, and the tail gas mixed with the ammonia gas is subjected to the following reactions in the lower selective reduction catalyst 32 and the upper selective reduction catalyst 33 at a certain temperature:
NO + NO2 + 2NH3 → 2N2 + 3H2O；
4NO + O2 + 4NH3 → 4N2 + 6H2O；
2NO2 + O2 + 4NH3 → 3N2 + 6H2O。
the tail gas from which carbon particles are removed is subjected to reduction reaction with ammonia gas in the lower selective reduction catalyst 32 and the upper selective reduction catalyst 33, so that nitrogen oxides NO are realizedx]And (5) removing.
In the utility model, as shown in fig. 4 and 9, the lower selective reduction catalyst 32 and the upper selective reduction catalyst 33 have the same structure, and both include a shelf iii 35, a packaging cylinder iii 36, a gasket iii 37, and a selective catalytic reduction device iii 38, the shelf iii 35 is fixedly installed on the inner wall of the catalytic reduction chamber box 34, through holes are uniformly formed on the shelf iii 35, a circle of convex grooves with concave inner walls and convex outer walls are formed on the side wall of the shelf iii 35, a packaging cylinder iii 36 is installed in each through hole, the packaging cylinder iii 36 is fixed in the through hole on the shelf iii 35 through the convex groove on the side wall, the gasket iii 37 is arranged on the periphery of the selective catalytic reduction device iii 38, a circle of convex strips are formed on the outer wall of the gasket iii 37, and the gasket ii 30 is clamped in the convex groove on the inner wall of the packaging cylinder iii 36 through the convex strips. Be equipped with the outer concave of round inner wall, the bellied tongue of outer wall on packaging barrel III 36's lateral wall, be provided with the round sand grip on packaging barrel III 37's the outer wall and can joint in the tongue fast, and packaging barrel III 36 directly places protruding tongue above that in the through-hole on shelf III 35 and can prevent that packaging barrel III 36 from gliding down to realize packaging barrel III 36 stable, the mounting means is convenient for install and conveniently dismantle the change like this.
In the present invention, preferably, the intake connection pipe 1 is provided with a differential pressure sensor i 5 and an air flow meter 6, and passes through the differential pressure sensor i 5 and the air flow meter 6.
In the present invention, preferably, the outlet pipe 4 is provided with a downstream nitrogen oxide sensor 7, a temperature sensor i 8 and a differential pressure sensor ii 9.
The temperature adjusting process of the whole purification system comprises the following steps:
A. heating the tail gas of the generator set by a tail gas fin electric heating tube 50 in the air inlet heating pipeline 10, and controlling and adjusting the temperature of the tail gas by the heating power of the tail gas fin electric heating tube 50;
B. introducing fresh air through a high-pressure exhaust fan 40 of the urea thermal mixing device 14, heating the fresh air through a fresh air fin electric heating pipe 43, introducing the heated fresh air into the catalytic reduction chamber 12 through an ammonia gas injection pipe 49, carrying out exhaust gas confluence reaction with the generator, and heating the newly introduced air to accelerate the temperature rise of the system to a temperature range suitable for catalyst reaction;
C. after the exhaust gas passes through the catalytic oxidation chamber 11, when the exhaust temperature is high due to the heat release of the oxidation reaction in the chamber, a mixed gas (ammonia gas, air and water vapor) with relatively low temperature is formed by the urea heat mixing device 14, and when the mixed gas enters the catalytic reduction chamber 12 through the ammonia gas injection pipe 49, the mixed gas is mixed with the exhaust gas with high temperature, so that the exhaust temperature is reduced, and the internal temperature of the system is ensured to be stably in the temperature range of the efficient reaction of the catalyst.
In the present invention, the front side of the purification box 53 is provided with a lower maintenance door 54 and a lower maintenance door 55 for maintaining the catalytic oxidation chamber 11 and the catalytic reduction chamber 12, respectively, and the bottom of the purification box 53 is provided with a discharge port 56 for discharging condensed water. The left and right sides of the purifying box 53 are respectively provided with a front maintenance door 57 and a rear maintenance door 58 for maintaining the inlet air heating pipe 10, the outlet pipe 13, the upper parts of the inlet air heating pipe and the outlet pipe, and the urea heat mixing device 14.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that, although the utility model has been described in detail with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the utility model as defined by the appended claims.
Claims (8)
1. The utility model provides an integrated tail gas clean-up system of general type case formula for generating set which characterized in that: a general integrated tail gas clean system of type case formula for generating set including admit air connecting pipe (1), particulate matter electrostatic adsorption device (2), purifier (3), pipeline (4) of giving vent to anger, admit air the end of giving vent to anger of connecting pipe (1) and be connected with the air inlet of particulate matter electrostatic adsorption device (2), the gas outlet of particulate matter electrostatic adsorption device (2) is connected with the air inlet of purifier (3), the gas outlet and the pipeline (4) of giving vent to anger of purifier (3) are connected.
2. The universal box-type integrated exhaust gas purification system for generator sets according to claim 1, characterized in that: purifier (3) including admitting air heating tube way (10), catalytic oxidation room (11), catalytic reduction room (12), outlet duct (13), urea hot mixing arrangement (14) purifying box (53), purifying box (53) in install catalytic oxidation room (11), catalytic reduction room (12) are installed at the top of catalytic oxidation room (11), communicate between catalytic oxidation room (11) and catalytic reduction room (12), the gas outlet of admitting air heating tube way (10) is connected with the air inlet of seting up on the lateral wall of catalytic oxidation room (11), the air inlet of outlet duct (13) and the gas outlet of seting up on catalytic reduction room (12) lateral wall are connected, the ammonia export that urea hot mixing arrangement (14) generated is located between catalytic oxidation room (11), catalytic reduction room (12).
3. The universal box-type integrated exhaust gas purification system for generator sets according to claim 2, characterized in that: the catalytic oxidation chamber (11) comprises an oxidation catalyst component layer (15), a catalytic type particle trap component layer (16), an upstream nitrogen oxide sensor (17), a temperature sensor II (18), a pressure sensor I (19), a temperature sensor III (20), a pressure sensor II (21), a porous airflow dispersion plate (22) and a catalytic oxidation chamber box body (23), a porous airflow dispersion plate (22) is installed on the lower portion of an inner cavity of the catalytic oxidation chamber box body (23), an air inlet connected with the air inlet heating pipeline (10) is formed in the side wall of the catalytic oxidation chamber box body (23) on the lower side of the porous airflow dispersion plate (22), an oxidation catalyst component layer (15) fixed on the inner wall of the catalytic oxidation chamber box body (23) is installed on the upper side of the porous airflow dispersion plate (22), and a catalytic particle trap component layer (16) fixed on the inner wall of the catalytic oxidation chamber box body (23) is installed on the upper side of the oxidation catalyst component layer (15); a temperature sensor III (20) and a pressure sensor II (21) are arranged on the side wall of a catalytic oxidation chamber box body (23) between the oxidation catalyst component layer (15) and the catalytic type particle catcher component layer (16); an upstream nitrogen oxide sensor (17), a temperature sensor II (18) and a pressure sensor I (19) are arranged on the side wall of a catalytic oxidation chamber box body (23) on the upper side of the catalytic type particle trap component layer (16).
4. The universal box-type integrated exhaust gas purification system for generator sets according to claim 3, characterized in that: the oxidation catalyst component layer (15) comprises a packaging barrel body I (24), a layer frame I (25), a gasket 1 (26) and an oxidation catalyst (27), wherein the layer frame I (25) is fixedly installed on the inner wall of a catalytic oxidation chamber box body (23), through holes are uniformly formed in the layer frame I (25), a circle of convex grooves with an outer concave inner wall and a convex outer wall are formed in the side wall of the packaging barrel body I (24), a packaging barrel body I (24) is installed in each through hole, the packaging barrel body I (24) is fixed in the through holes in the layer frame I (25) through the convex grooves in the side wall of the packaging barrel body I, the gasket 1 (26) is arranged on the periphery of the oxidation catalyst (27), a circle of convex strips are arranged on the outer wall of the gasket 1 (26), and the gasket 1 (26) is clamped in the convex grooves in the inner wall of the packaging barrel body I (24) through the convex strips.
5. A generic type of box integrated exhaust gas purification system for generator sets according to claim 3 or 4, characterized in that: catalytic type particle trap subassembly layer (16) including layer frame II (28), encapsulation barrel II (29), liner II (30), particle trap (31), layer frame II (28) fixed mounting on the inner wall of catalytic oxidation room box (23), even be provided with the through-hole on layer frame II (28), be equipped with round inner wall undercut on the lateral wall of encapsulation barrel II (29), the bellied tongue of outer wall, install one encapsulation barrel II (29) in every through-hole, in the through-hole on layer frame II (28) is fixed through the tongue on its lateral wall in encapsulation barrel II (29), the periphery of particle trap (31) is provided with liner II (30), be provided with the round sand grip on the outer wall of liner II (30), in liner II (30) are through the tongue of its sand grip joint on the inner wall of encapsulation barrel II (29).
6. The universal box-type integrated exhaust gas purification system for generator sets according to claim 2, characterized in that: catalytic reduction room (12) include lower floor selective reduction catalyst ware (32), upper selective reduction catalyst ware (33), catalytic reduction room box (34) install the top at catalytic oxidation room (11), from supreme lower floor selective reduction catalyst ware (32) and upper selective reduction catalyst ware (33) of installing down in catalytic reduction room box (34), set up the gas outlet with outlet duct (13) intercommunication on catalytic reduction room box (34) lateral wall of upper selective reduction catalyst ware (33) upside.
7. The universal type box integrated tail gas purification system for the generator set according to claim 6, wherein: the lower selective reduction catalyst (32) and the upper selective reduction catalyst (33) have the same structure and respectively comprise a shelf III (35), a packaging cylinder III (36), a gasket III (37) and a selective catalytic reduction device III (38), layer frame III (35) fixed mounting on the inner wall of catalysis reduction room box (34), even being provided with the through-hole on layer frame III (35), be equipped with the outer concave of round inner wall on the lateral wall of layer frame III (35), the bellied tongue of outer wall, install a encapsulation barrel III (36) in every through-hole, in the through-hole on layer frame III (35) is fixed through the tongue on its lateral wall in encapsulation barrel III (36), the periphery of selective catalytic reduction ware III (38) is provided with liner III (37), be provided with the round sand grip on the outer wall of liner III (37), in liner II (30) pass through the tongue of its sand grip joint on the inner wall of encapsulation barrel III (36).
8. The universal box-type integrated exhaust gas purification system for generator sets according to claim 2, characterized in that: the urea heat mixing device (14) comprises an air filter (39), a high-pressure exhaust fan (40), a fresh air pipeline (41), a fresh air heating pipe (42), a fresh air fin electric heating pipe (43), a temperature sensor IV (44), a urea mixing pipeline (45), a pressure difference sensor III (46), a urea water solution spray head (47), an ammonia gas dispersion cavity (48) and an ammonia gas injection pipe (49), wherein an air outlet of the air filter (39) is connected with an air inlet of the high-pressure exhaust fan (40) through a pipeline, an air outlet of the high-pressure exhaust fan (40) is connected with an air inlet of the fresh air heating pipe (42) through the fresh air pipeline (41), the fresh air fin electric heating pipe (43) is installed in the fresh air heating pipe (42), and a temperature sensor IV (44) is installed at an air outlet end of the fresh air heating pipe (42), the air outlet of fresh air heating pipe (42) and the air intake connection of urea mixing pipe (45), differential pressure sensor III (46) are installed to the air inlet end of the air intake connection of urea mixing pipe (45), install urea aqueous solution shower nozzle (47) on urea mixing pipe (45), the air outlet of urea mixing pipe (45) and the air intake connection of ammonia dispersion chamber (48), the air outlet and the ammonia injection pipe (49) of ammonia dispersion chamber (48) are connected, install between catalytic oxidation room (11), catalytic reduction room (12) ammonia injection pipe (49).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113882933A (en) * | 2021-11-12 | 2022-01-04 | 昆明理工大学 | A integrated tail gas clean-up system of general type case formula for generating set |
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