CN105351050A - Ammonia gas generating device for diesel vehicle filter - Google Patents
Ammonia gas generating device for diesel vehicle filter Download PDFInfo
- Publication number
- CN105351050A CN105351050A CN201510878327.3A CN201510878327A CN105351050A CN 105351050 A CN105351050 A CN 105351050A CN 201510878327 A CN201510878327 A CN 201510878327A CN 105351050 A CN105351050 A CN 105351050A
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- CN
- China
- Prior art keywords
- urea
- ammonia gas
- sleeve
- gas generating
- generating device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
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- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
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- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/25—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an ammonia generator
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- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/40—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a hydrolysis catalyst
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to an automobile filter, and provides an ammonia gas generating device for a diesel vehicle filter. An ammonia gas nozzle is arranged at one end of a cylindrical shell, a urea heating cavity is arranged outside the other end of the cylindrical shell, and a sleeve is arranged outside the urea heating cavity; a cavity communicated with the urea heating cavity is formed between the sleeve and the shell, a urea inlet is formed in the outer side of the sleeve, connected with a metering device and communicated with the internal cavity and the urea heating cavity, and a vehicle tail gas inlet is formed in the outer side of the sleeve and tangent to the section of the sleeve. According to the ammonia gas generating device for the diesel vehicle filter, the design of all inlets is reasonable, vehicle tail gas and urea can be evenly mixed with ammonia gas in an exhaust pipe through different jetting directions, the ammonia gas is directly jet into an exhaust manifold, and the ammonia gas generating device can be used for a closed DeNOx system; the nitrate removing efficiency is high, and space for hydrolysis and evaporation is not needed; the ammonia gas generating device can be applied to a closed nitrate removing system, sediments in a catalyst and the exhaust pipe are avoided, the probability of system failures caused by sedimentation is lowered, and the blank of ammonia gas generating devices for diesel vehicle tail gas purifying devices is filled up.
Description
Technical field
Patent of the present invention relates to automobile filter technical field, is specifically related to a kind of ammonia gas generating device of diesel vehicle filter.
Background technique
Along with the increase of China's automobile use amount, the pollutant how controlled in tail gas becomes focus.Wherein, selective catalytic reduction (SelectiveCatalyticReduction is called for short SCR) is as a kind of important means of effective control discharged nitrous oxides, and because its denitration efficiency is high, the features such as technical maturity are widely used.SCR technology is under the effect of catalyzer, utilizes reducing agent (liquefied ammonia etc.) to generate nitrogen and water with the reaction of nitrogen oxides in flue gas, thus removes the technology of nitrogen oxide.Automobile exhaust filter ammonia generator major part on domestic market, for directly to spray ammoniacal liquor, effectively can not improve the nitrogen oxide in exhaust, easily causes deposition blocking, causes thrashing, and vehicle cannot continue to use, and affects very large.
Summary of the invention
The present invention is in order to solve the problem that direct spray type generator mixed effect is poor, easily produce blocking, and provide one to mix, catalytic efficiency is high, and closed loop is except the ammonia gas generating device of the diesel vehicle filter of nitre.
The present invention realizes by the following technical solutions, a kind of diesel vehicle filter ammonia gas generating device, columnar shell one end is provided with ammonia nozzle, Urea chamber is provided with outside the other end, Urea is provided with sleeve outside chamber, the cavity be communicated with Urea chamber is provided with between sleeve with housing, the outside of sleeve is provided with the urea inlet being positioned at same axis with ammonia nozzle, urea inlet connects measuring apparatus and is communicated with inner cavity and Urea chamber, is positioned at outside sleeve and with the tangent position in sleeve cross section and is provided with vehicle exhaust entrance; Ammonia nozzle arranges for convergence and connects exhaust gas cleaner PDF, sets gradually electrically heated catalytic device and hydrolysis catalyst, electrically heated catalytic device connection control device between Urea chamber and ammonia nozzle.
In order to make to be uniformly dispersed, between described urea inlet and Urea chamber, be provided with porous barrier.
In order to increase convolution speed, described vehicle exhaust entrance is positioned at the front portion of sleeve.
Preferably, described ammonia nozzle 5 is less than 250mm with exhaust gas cleaner PDF distance.
Preferably, the temperature transducer of connection control device is provided with between described electrically heated catalytic device and hydrolysis catalyst.
Usefulness of the present invention is, each entry design is reasonable, vehicle exhaust and urea ammonia Homogeneous phase mixing in the outlet pipe that do not coexist utilizing injection direction can be made, ammonia injects directly into exhaust manifold, can be used for closed loop DeNOx system, high except nitre usefulness, even if when cold start-up independent of load (air displacement, delivery temperature and back pressure), the outlet pipe optimized is arranged, without hydrolysis and evaporation requisite space, can be applicable to closed loop except nitre system, catalyst converter, deposit-free in outlet pipe, reduce because depositing the thrashing caused, fill up the blank of cleaning device of tail gas of diesel vehicle ammonia gas generating device.
Accompanying drawing explanation
Fig. 1 ammonia gas generating device structural representation of the present invention;
Fig. 2 left TV structure schematic diagram of the present invention.
In figure 1, urea inlet, 2, Urea chamber, 21, sleeve, 3, electric heating catalyst converter, 4, hydrolysis catalyst, 5, ammonia nozzle, 6, temperature sensor joint, 7, electric heating joint, 8, vehicle exhaust entrance.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, the invention provides a kind of diesel vehicle filter ammonia gas generating device, comprise urea inlet 1, Urea chamber 2, electric heating catalyst converter 3, hydrolysis catalyst 4, ammonia nozzle 5, temperature sensor joint 6, electric heating joint 7, vehicle exhaust entrance 8, the entirety of ammonia gas generating device is cylindrical shape, shell one end is provided with ammonia nozzle 5, Urea chamber 2 is provided with outside the other end, sleeve 21 is provided with outside Urea chamber 2, cavity is provided with between sleeve 21 and housing, this cavity is communicated with in housing end with Urea chamber 2, the outside of sleeve 21 is provided with the urea inlet 1 being positioned at same axis with ammonia nozzle 5, urea inlet 1 connects measuring apparatus and the cavity be communicated with between inner sleeve 21 and housing and Urea chamber 2.
To be positioned at outside sleeve 21 and to be provided with vehicle exhaust entrance 8 with the tangent position in sleeve 21 cross section; Ammonia nozzle 5 is arranged for convergence, sets gradually electric heating catalyst converter 3 and hydrolysis catalyst 4 between Urea chamber 2 and ammonia nozzle 5, and electrically heated catalytic device 3 connection control device also controls the work of electric heating catalyst converter 3.In order to improve catalytic effect, ammonia nozzle 5 is less than 250mm with the distance of exhaust gas cleaner DPF.In order to make vehicle exhaust mix with urea, be provided with porous barrier between urea inlet 1 and Urea chamber 2, porous barrier is fixedly connected with shell end, and vehicle exhaust entrance 8 is positioned at the front portion of sleeve.
When the present invention specifically implements, urea enters urea inlet 1 by metering system, vehicle exhaust enters ammonia gas generating device by gas inlet 8, vehicle exhaust can circle round in cavity, Urea chamber 2 is entered through porous barrier after mixing with urea, because vehicle exhaust has a fixed angular speed, the urea acting in conjunction of spraying with rectilinear direction is mixed fully, disperses through porous barrier.Then in Urea chamber 2, urea heated and mix, wherein water evaporation forms gas, if exhaust temperature is low when just starting, again through electric heating catalyst converter 3, be fully formed gas, then through hydrolysis catalyst 4, form ammonia and water, ammonia is sprayed onto in exhaust gas cleaner DPF through nozzle 5, and the temperature temperature transducer of heating is received the enterprising trip temperature of temperature sensor joint 6 and controlled.
Claims (5)
1. a diesel vehicle filter ammonia gas generating device, it is characterized in that, columnar shell one end is provided with ammonia nozzle (5), Urea chamber (2) is provided with outside the other end, outside, Urea chamber (2) is provided with sleeve (21), sleeve (21) be provided with the cavity be communicated with Urea chamber (2) between housing, the outside of sleeve (21) is provided with the urea inlet (1) being positioned at same axis with ammonia nozzle (5), urea inlet (1) connects measuring apparatus and is communicated with inner cavity and Urea chamber (2), be positioned at sleeve (21) outside and be provided with vehicle exhaust entrance (8) with the tangent position in sleeve (21) cross section, ammonia nozzle (5) arranges for convergence and connects exhaust gas cleaner PDF, sets gradually electrically heated catalytic device (3) and hydrolysis catalyst (4), electrically heated catalytic device (3) connection control device between Urea chamber (2) and ammonia nozzle (5).
2. diesel vehicle filter ammonia gas generating device according to claim 1, is characterized in that, is provided with porous barrier between described urea inlet (1) and Urea chamber (2).
3. diesel vehicle filter ammonia gas generating device according to claim 1 and 2, is characterized in that, described vehicle exhaust entrance (8) is positioned at the front portion of sleeve (21).
4. diesel vehicle filter ammonia gas generating device according to claim 3, is characterized in that, described ammonia nozzle (5) and exhaust gas cleaner PDF distance are less than 250mm.
5. diesel vehicle filter ammonia gas generating device according to claim 4, is characterized in that, is provided with the temperature transducer of connection control device between described electrically heated catalytic device (3) and hydrolysis catalyst (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510878327.3A CN105351050A (en) | 2015-12-04 | 2015-12-04 | Ammonia gas generating device for diesel vehicle filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510878327.3A CN105351050A (en) | 2015-12-04 | 2015-12-04 | Ammonia gas generating device for diesel vehicle filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105351050A true CN105351050A (en) | 2016-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510878327.3A Pending CN105351050A (en) | 2015-12-04 | 2015-12-04 | Ammonia gas generating device for diesel vehicle filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105351050A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108295891A (en) * | 2018-01-10 | 2018-07-20 | 绍兴文理学院 | The in-situ regeneration System and method for of diesel car tail gas refining Cu based molecular sieve denitrating catalysts |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040040288A1 (en) * | 2002-02-14 | 2004-03-04 | Eberhard Jacob | Method and apparatus for producing ammonia (NH3) |
| US20080041052A1 (en) * | 2006-08-16 | 2008-02-21 | Andreas Doring | Exhaust gas post treatment system |
| CN103764565A (en) * | 2011-07-01 | 2014-04-30 | 澳泽化学股份公司 | Method for the production of ammonia from an ammonia precursor substance in order to reduce nitrogen oxides in exhaust gases |
| CN105050692A (en) * | 2013-03-22 | 2015-11-11 | 日本碍子株式会社 | Reductant injection device, exhaust gas processing apparatus and exhaust gas processing method |
| CN205117459U (en) * | 2015-12-04 | 2016-03-30 | 特威泰克环保技术（山东）有限公司 | Diesel vehicle is ammonia generating device for filter |
-
2015
- 2015-12-04 CN CN201510878327.3A patent/CN105351050A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040040288A1 (en) * | 2002-02-14 | 2004-03-04 | Eberhard Jacob | Method and apparatus for producing ammonia (NH3) |
| US20080041052A1 (en) * | 2006-08-16 | 2008-02-21 | Andreas Doring | Exhaust gas post treatment system |
| CN103764565A (en) * | 2011-07-01 | 2014-04-30 | 澳泽化学股份公司 | Method for the production of ammonia from an ammonia precursor substance in order to reduce nitrogen oxides in exhaust gases |
| CN105050692A (en) * | 2013-03-22 | 2015-11-11 | 日本碍子株式会社 | Reductant injection device, exhaust gas processing apparatus and exhaust gas processing method |
| CN205117459U (en) * | 2015-12-04 | 2016-03-30 | 特威泰克环保技术（山东）有限公司 | Diesel vehicle is ammonia generating device for filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108295891A (en) * | 2018-01-10 | 2018-07-20 | 绍兴文理学院 | The in-situ regeneration System and method for of diesel car tail gas refining Cu based molecular sieve denitrating catalysts |
| CN108295891B (en) * | 2018-01-10 | 2021-04-06 | 绍兴文理学院 | In-situ regeneration system and method of Cu-based molecular sieve denitration catalyst for diesel vehicle tail gas purification |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160224 |
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| RJ01 | Rejection of invention patent application after publication |