CN102733913B - The aftertreatment control unit of two-stage afterheat manner storing and supplying ammonia - Google Patents
The aftertreatment control unit of two-stage afterheat manner storing and supplying ammonia Download PDFInfo
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- CN102733913B CN102733913B CN201210224167.7A CN201210224167A CN102733913B CN 102733913 B CN102733913 B CN 102733913B CN 201210224167 A CN201210224167 A CN 201210224167A CN 102733913 B CN102733913 B CN 102733913B
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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
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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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
- 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
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Abstract
The present invention relates to the aftertreatment control unit of a kind of two-stage afterheat manner storing and supplying ammonia, it is characterized in that: adopt the waste heat of the reflux cooling liquid of electromotor, heating of Activated storage ammoniate, discharge ammonia, according to engine exhaust operating mode level, rely on control unit that ammonia is imported the front end of SCR postprocessor, it is achieved the SCR system that the conveying injection of no liquid carbamide and atomization are decomposed；There are two active material storage tanks in institute the difference is that this system, first activates secondary ammonia storage tank, quickly responds, reduce the pollutant emission during cold start-up when starting vehicle；This system possesses feature flexibly, can not only meet emission control target during vehicle low-temperature cool starting, inexpensive, and reliability is high, easy to use；For SCR state 4 system above, it is also possible to be applied to FCEV system, meet the application demand of future automobile industry, there is practical value.
Description
Technical field
The present invention relates to the aftertreatment control unit of a kind of two-stage afterheat manner storing and supplying ammonia, be mainly used in the SCR post processing industry of vehicle exhaust, be also applied for the FCEV energy-storage system of fuel cell.
Background technology
Currently, the whole world faces the integration challenges of the energy and environment.In the technological means selection of the emission compliance of orthodox car, people still suffer from many difficult problems, for instance, the aspect such as technical approach how selecting post processing.
SCR (SelectiveCatalyticReduction) catalyzed conversion reduction technique is traditional post-processing technology.The essence of traditional SCR technology of this employing liquid area is to utilize carbamide at high temperature to decomposite ammonia, reacts under the comprehensive function of catalyst and temperature as the NOX in the ammonia of reducing agent and engine exhaust, generates nontoxic N under desirable operating mode2And H2O, thus reaching the purpose purified.
Traditional SCR has lot of advantages, for instance, it is possible to there is the NOX removal efficiency of 50 ~ 85% in the scope of delivery temperature 250 ~ 550oC, and can effectively reduce the emission level of PM；Traditional SCR can easily meet Europe 4 and Europe 5 level, it may have reaches the potentiality of Europe 6 level；Reaching traditional SCR technology that Europe 4 adopts at present, the fuel oil consumption of electromotor can reduce by 3 ~ 6%；Traditional SCR catalyst does not contain noble metal, compares advantage of lower cost；Traditional SCR quality to fuel oil for vehicles, particularly sulfur content is insensitive.Based on above analysis, traditional SCR post-processing technology is also relatively suitable for vehicle condition and the fuel oil for vehicles situation of China.
If in China's traditional vehicle-mounted SCR post-processing technology of popularization and application, it is necessary to resolve carrier, catalyst, carbamide reducing agent add the vital technological difficulties such as supply network, the dosage of carbamide reducing agent, the atomized spray of carbamide reducing agent, SCR catalyst conversion efficiency, ammonia amount of leakage and system matches.
The upgrading each time of automobile emission standard, all produces such or such shock effect to automobile industry.State 4 standard of China repeatedly postpones the timetable of enforcement, it it is not only the nonsynchronous sole cause of standard of fuel, also the problem that the service facility of the social matching system of complexity and the carbamide reducing agent socialization of liquid is built is faced, such as, after state 4 standard implementation, immediately can to the ECU(control unit needed for traditional SCR system operating) and DCU(metering units) produce demand, consider that the electric-control systems such as current vehicle-mounted ECU are all imported products, the DCU of domestic enterprise's independent development is difficult to carry out with it communication coupling, otherwise, if the employing import product of ECU and DCU system 100%, not only price is significantly high, user is difficult to accept, and there is the problem that the source of goods is at full stretch, it is also faced with the after-sale service technology of complexity and the problem of cost, constrain the development and progress of whole automobile industry.Additionally, the liquid area reducing agent used by traditional SCR system faces freezed in winter and the problem of insulation defrosting, this also result in the complicated reason with poor stability of traditional SCR system.
Therefore, how to obtain low cost and high performance after-treatment system is the core content advancing this art progress.Inorganic salt can as the good choice of technology of following SCR system to ammonia adsorption-desorption characteristics.
Some salts of technical grade, such as, chloride and their mixture such as strontium chloride, magnesium chloride or calcium chloride, with ammonia with the use of system, the heat absorption of the adsorption-desorption process of namely above-mentioned chloride and ammonia and exothermic phenomenon, the refrigeration system of the ripe large cold storage being applied to industry.
It is the general principles of chemistry that above-mentioned anhydrous chloride and ammonia carry out chemisorbed, the chloride of a molecule can adsorb the ammonia of 6 ~ 8 molecules in theory, form stable complex, during heating, ammonia is deviate from, along with going deep into of research, it has been found that the adsorption-desorption model of these chlorides and ammonia and the principles of chemistry can be completely applied to the SCR system of motor vehicle tail-gas purifying.
In national patent Information Network, being the theme word and search storing up ammonia, the patent No. is ' a kind of Urotropine tail gas ammonia recovery device with gas phase method ' of CN201120099229.7, the patent No. is ' the Pei An bindiny mechanism for machine room of refrigerated warehouse ' and ' composite functional ammonia storage device ' that the patent No. is CN201020269811.9 of the CN201020677361.7 characteristic component that is not related in the present invention.The patent that the patent No. is ' a kind of ammonia steaming device ' of CN200520057558.X is that a kind of ammonia nitrogen that ammonia nitrogen industrial wastewater is carried out gets rid of the environment protection treating device of process, is also not related to the characteristic component in the present invention.Uncorrelated with the present invention.
It is a kind of for the ureaclastic ammonia dispensing module of SCR (SCR) catalytic converter and traditional liquid with control system that the patent No. is that 2 inventions of ' method and system for the work of SCR catalyst is tested ' and ' operation method of SCR exhaust after-treatment system and diagnostic method ' that the patent No. is CN200880104697.X of CN201010244091.5 provide, it does not have relates to inventive feature composition.
The invention that the patent No. is ' preparation method of a kind of efficient low-temperature ammonia-storing material ' of CN200910197860.8 is applied to SCR aftertreatment system, is characterized by adopting amino borane ammino-complex ammonia BH3(NH3) n (n=1 ~ 3)；The maximum storage ammonia amount of room temperature up to 62.4wt%, but, it is contemplated that amino borane expensive, there is higher blast and burning grade, be not suitable for the high-volume popularization and application in general industry field.
The invention that the patent No. is ' solid material of storage and delivering ammonia ' of CN200580026626.9 relates to storing the solid material with delivering ammonia.The solid material of this storage ammonia includes Ma(NH3)nXzIonic salt, salt solid material by mould direct voltage molding, for instance, make cylinder, then arranged together for a lot of this cylinders.The disadvantage of this patent is that cylinder is excessively closely knit, each aminolysis carries out the saturated absorption of ammonia again and takes long enough after sucking into, for instance 4 ~ 6 hours, efficiency was very low, this stores up ammonia system inconvenience very for the SCR of application on automobile, becomes the reason limiting its application.
The patent No. is ' ammonia storage device purposes in energy production ' of CN200580009219.7, and this invention relates to a kind of generator unit, and comprising formula is Ma(NH3)nXzAmmonia absorb with release salt, this patent is mainly primarily adapted for use in fuel cell system.Refer to property material in the claim 4 of this patent and for such salt or be positioned on porous carrier materials, which kind of porous material statement is not, and those skilled in the art cannot be implemented.
The patent No. a kind of amido complex compound that has been the disclosure of the invention of ' a kind of amido complex compound and its production and use ' of CN200710156866.1 and its production and use.The composition of this amido complex compound is MXm(NH3)n, this invention is to the separation of ammonia in circulating air used by ammonia synthesis process.Claim relates merely to the preparation process of this ammonobase complex.
The patent No. is the solid ammonia storage that comprises ammonia absorption/desorption solid material of the patent of the high density of the ammonia ' storage ' of CN200680005886.2 and conveying material, described be compacted to the density storage more than the 50% of theoretic skeleton density and conveying material provide solid ammonia storage material, metal salt solid material described in this patent is also be molded directly into type, statement have employed binding agent, only state to be probably and have employed silicon dioxide fibre binding agent, do not have dosage ratio yet, do not clearly state the thin item of other composition adopted, professional and technical personnel almost cannot implement.
Retrieval and the analysis of above-mentioned patent show, store up ammoniate with activity and adsorb and resolve ammonia, define the after-treatment system of application on vehicle and are also not seen reported.
Summary of the invention
It is an object of the invention to provide the aftertreatment control unit of a kind of two-stage afterheat manner storing and supplying ammonia, it is heated by the waste heat of engine coolant, rely on control unit and one group of electromagnetic valve or proportioning valve, realize the dosage conveying of ammonia and import SCR aftertreatment system easily, it is achieved the removal to NOX；Simplified system, improves reliability, significantly reduces cost.
The technical scheme is that and be achieved in that: the aftertreatment control unit of two-stage afterheat manner storing and supplying ammonia, electromotor, anti-icing fluid conveying pipe, electromagnetic valve, main ammonia storage tank, secondary ammonia storage tank, air filter, charge door, pressure transducer, ammonia storage tank temperature sensor, standby pipe valve, reducing gas carry pipe, proportioning valve, electronic control unit, intake manifold temperature sensor, NOX sensor, reducing agent conduit, tail gas air inlet pipe, exhaust emission tube, SCR postprocessor, solid ammonia storage material, conduit, electronic control unit to form；nullIt is characterized in that: the anti-icing fluid conveying pipe main ammonia storage tank of traverse connected on electromotor、Secondary ammonia storage tank，It is positioned at main ammonia storage tank、Helically pipe-disc type structure is managed in secondary anti-icing fluid conveying within ammonia storage tank，Anti-icing fluid conveying pipe pipeline there is electromagnetic valve，Main ammonia storage tank、Secondary ammonia storage tank is internal fills solid ammonia storage material，Loading is the 40% of tank body volume，Main ammonia storage tank、Secondary ammonia storage tank top has charge door，It is connected to pressure transducer、Ammonia storage tank temperature sensor，Pressure transducer induction end probes into tank interior but does not contact solid ammonia storage material，Ammonia storage tank temperature sensor senses end inserts in solid ammonia storage material，Main ammonia storage tank has standby pipe valve，Conduit two ends are by air filter and main ammonia storage tank、Secondary ammonia storage tank connects，Conduit line has a proportioning valve，Article two, reducing gas conveying pipe connects main ammonia storage tank respectively、Secondary ammonia storage tank，Junction point has air filter，The reducing gas conveying pipe other end is also unified into reducing agent conduit，Reducing agent catheter nozzle is positioned at tail gas air inlet pipe pipe，Tail gas air inlet pipe is connected with SCR postprocessor inlet end，Tail gas air inlet pipe pipeline connects intake manifold temperature sensor、NOX sensor，Intake manifold temperature sensor、The induction end of NOX sensor is positioned at channel interior，SCR postprocessor outlet side is connected with exhaust emission tube，Pressure transducer、Ammonia storage tank temperature sensor、Intake manifold temperature sensor、NOX sensor is connected with electronic control unit signal receiving end by holding wire，Electronic control unit connects proportioning valve by power signal line、Electromagnetic valve.
The preparation of described solid ammonia storage material is as follows with fill method: adopt the anhydrous magnesium chloride 58 parts of industry, expanded graphite 2 parts, deionized water 15 parts, industrial alcohol 10 parts and industry ball clay 15 parts, above-mentioned material adopts the dough mixing machine of machinery to mix the powder uniformly becoming hygrometric state, incorporation time 5 ~ 15min, it is filled in main ammonia storage tank, secondary ammonia storage tank by charge door, the method adopting machinery concussion shakes main ammonia storage tank, secondary ammonia storage tank tank body 5 ~ 10min, removing the air gap therein, feeding quantity should cause the 40% of tank body volume capacity；Whole tank body is put in vacuum drying oven, begins to warm up from room temperature 25 DEG C under normal pressure, and average 5 DEG C/10min is warmed up to 70 DEG C, and during heat drying, charge door opens wide, and discharges water vapour and alcohol steam；Keep 30min at this temperature, then start vacuum pump, progressively evacuation at this temperature, divide and make for three times vacuum reach-10Kpa, heat-insulation pressure keeping 30min.
Described anhydrous magnesium chloride adopts other can form the inorganic salt of complex and substitutes, it is possible to be strontium chloride or calcium chloride energy and NH3Form the chloride of complex.
After the invention have the advantages that ammoniated of system, it is ensured that the mileage that vehicle travels is 20000 ~ 40000km, has sufficient practicality, economy and advance；This technology applies the meaning with reality on vehicle-mounted SCR.
Accompanying drawing explanation
Fig. 1 is the system layout of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described with embodiment: as shown in Figure 1, the aftertreatment control unit of two-stage afterheat manner storing and supplying ammonia, by electromotor 1, anti-icing fluid conveying pipe 2, electromagnetic valve 3, main ammonia storage tank 4, secondary ammonia storage tank 5, air filter 6, charge door 7, pressure transducer 8, ammonia storage tank temperature sensor 9, standby pipe valve 10, reducing gas conveying pipe 11, proportioning valve 12, electronic control unit 13, intake manifold temperature sensor 14, NOX sensor 15, reducing agent conduit 16, tail gas air inlet pipe 17, exhaust emission tube 18, SCR postprocessor 19, solid ammonia storage material 20, conduit 21, electronic control unit 22 forms；nullIt is characterized in that: the anti-icing fluid conveying pipe 2 main ammonia storage tank 4 of traverse connected on electromotor 1、Secondary ammonia storage tank 5，It is positioned at main ammonia storage tank 4、Secondary anti-icing fluid conveying pipe 2 helically pipe-disc type structure within ammonia storage tank 5，Anti-icing fluid conveying pipe 2 pipeline there is electromagnetic valve 3，Main ammonia storage tank 4、Secondary ammonia storage tank 5 is internal fills solid ammonia storage material 20，Loading is the 40% of tank body volume，Main ammonia storage tank 4、Secondary ammonia storage tank 5 top has charge door 7，It is connected to pressure transducer 8、Ammonia storage tank temperature sensor 9，Pressure transducer 8 induction end probes into tank interior but does not contact solid ammonia storage material 20，Ammonia storage tank temperature sensor 9 induction end is inserted in solid ammonia storage material 20，Main ammonia storage tank 4 has standby pipe valve 10，Conduit 21 two ends are by air filter 6 and main ammonia storage tank 4、Secondary ammonia storage tank 5 connects，Conduit 21 pipeline has a proportioning valve 12，Article two, reducing gas conveying pipe 11 connects main ammonia storage tank 4 respectively、Secondary ammonia storage tank 5，Junction point has air filter 6，Reducing gas conveying pipe 11 other end is also unified into reducing agent conduit 16，Reducing agent conduit 16 nozzle is positioned at tail gas air inlet pipe 17 and manages，Tail gas air inlet pipe 17 is connected with SCR postprocessor 19 inlet end，Tail gas air inlet pipe 17 pipeline connects intake manifold temperature sensor 14、NOX sensor 15，Intake manifold temperature sensor 14、The induction end of NOX sensor 15 is positioned at channel interior，SCR postprocessor 19 outlet side is connected with exhaust emission tube 18，Pressure transducer 8、Ammonia storage tank temperature sensor 9、Intake manifold temperature sensor 14、NOX sensor 15 is connected with electronic control unit 22 signal receiving end by holding wire，Electronic control unit 22 connects proportioning valve 12 by power signal line、Electromagnetic valve 3.
The preparation of described solid ammonia storage material 20 is as follows with fill method: adopt the anhydrous magnesium chloride 58 parts of industry, expanded graphite 2 parts, deionized water 15 parts, industrial alcohol 10 parts and industry ball clay 15 parts, above-mentioned material adopts the dough mixing machine of machinery to mix the powder uniformly becoming hygrometric state, incorporation time 5 ~ 15min, it is filled in main ammonia storage tank 4, secondary ammonia storage tank 5 by charge door 7, the method adopting machinery concussion shakes main ammonia storage tank 4, secondary ammonia storage tank 5 tank body 5 ~ 10min, removing the air gap therein, feeding quantity should cause the 40% of tank body volume capacity；Whole tank body is put in vacuum drying oven, begins to warm up from room temperature 25 DEG C under normal pressure, and average 5 DEG C/10min is warmed up to 70 DEG C, and during heat drying, charge door 7 opens wide, and discharges water vapour and alcohol steam；Keep 30min at this temperature, then start vacuum pump, progressively evacuation at this temperature, divide and make for three times vacuum reach-10Kpa, heat-insulation pressure keeping 30min；
Described anhydrous calcium chloride can also adopt other can form the inorganic salt of complex and substitute, for instance, strontium chloride, Nickel dichloride., copper chloride or magnesium chloride etc. can and NH3 form the chloride of complex.
Embodiment
In order to ensure system safety at elevated pressures, main ammonia storage tank 4 is the pressure tank body of stainless steel, and the thickness of tank body is 4 ~ 5mm, cylindrical, one layer of nylon of tank interior thermal spraying, in order to the insulation in winter；The preparation order of main ammonia storage tank 4 and secondary ammonia storage tank 5 is the tank body being first welded into tubular, thermal spraying nylon heat-insulation layer in tank, and for northern vehicle user highly significant, southern vehicle user can be not added with heat insulation coating to heat insulation coating；It is of course also possible to adopt the way of external thermal insulation coating, for instance, at the external spray thermal insulation coatings of tank body, or direct insulation quilt is incubated；The top of cylinder adopts ring flange to connect, and corresponding parts are previously assembled on blind flange；The inner surface heat spraying nylon powder of bucket is once；Take the ni-based foam metal cake of a piece of 50ppi less than tank body internal diameter 2mm, be drilled temperature sensor jack and charge pipe jack, be fixed on tank interior；The base plate of welded tank, the upper cover plate of welded tank；Additionally, the tank body of the present invention is to adopt stainless steel material, it would however also be possible to employ the tubing of similar PP and PE substitutes；
The afterheat manner of the present invention refers to and adopts the waste heat of engine coolant to carry out heating of Activated thing so that it discharges ammonia in a suitable case；Consider that the temperature of engine coolant is the highest and can reach 120 DEG C, and the waste heat needed for body series only needs the thermal source of 65 ~ 80 DEG C, therefore, the conveying of the anti-icing fluid in the system of present invention pipe 2 is the pipeline parallel way with engine coolant circulation is main, it is possible to use series system；The heating coil of anti-icing fluid conveying pipe 2 is stainless-steel pipe, in period prepared by main ammonia storage tank 4, secondary ammonia storage tank 5 tank body together with tank body welding；
Anti-icing fluid conveying pipe 2 flows through the signal that the amount of the anti-icing fluid of main ammonia storage tank 4 and secondary ammonia storage tank 5 feeds back to electronic control unit 22 by ammonia storage tank temperature sensor 9 and controls, during vehicle launch, first coolant is heated to light-off temperature secondary ammonia storage tank 5 less for capacity, discharge ammonia, meet the requirement of cold start-up；When temperature is more than 80 DEG C, the resolution speed of ammonia reaches maximum, and producing excess of ammonia in tank cannot consume, and the signal now by electronic control unit 22 closes electromagnetic valve 3, stops the flowing of engine coolant, it is prevented that continuing with of heat；Additionally, when stopping, SCR postprocessor 19 quits work, it is no longer necessary to ammonia, also it is now close electromagnetic valve 3 by the signal of electronic control unit 22, stops the flowing of engine coolant, it is prevented that continuing with of heat；It addition, as the pressure limiting 0.8Mpa of the pressure overpressure sensor in tank body, be also close electromagnetic valve 3 by the signal of electronic control unit 22, stop the flowing of engine coolant, it is prevented that continuing with of heat；
The ammonia Way out on tank body top is assembled with filter 6, it is ensured that the inorganic powder in tank body will not enter pipe-line system and block accurate device；Tank body tightens charge door 7 after adding active material；Pressure transducer 8 is also an automatic pressure limiting valve, it is ensured that the releasing pressure automatically of overpressure system；Tank body completes to install standby pipe valve 10, ammonia storage tank temperature sensor 9 and reducing gas conveying pipe 11；
Active gases pass into and completing of adsorbing is undertaken by standby pipe valve 10；High-purity industry ammonia bottle can be adopted, under the environment of gravity-flow ventilation, the absorption considering ammonia is exothermic process, the heat of system is removed timely the key being to ensure that ammonia quick adsorption, therefore, in advance main ammonia storage tank 4 and secondary ammonia storage tank 5 are respectively put into, or put in a sufficiently large tank of the water yield together, connect ammonia steel cylinder, by air relief valve and drying system, slowly carrying out ammoniated in the inlet pressure ranges of 0.02 ~ 0.2Mpa, the ammoniated time is 2 ~ 3h；Carrying out weigh before and after ammoniated main ammonia storage tank 4 and secondary ammonia storage tank 5, confirming that the clean quality of the ammonia being filled with is in preset range；After completing ammoniated, the valve closing of whole system, it is ensured that do not reveal；
After the main ammonia storage tank 4 of the present invention and the rustless steel autoclave of secondary ammonia storage tank 5 complete ammoniated, topmost feature as this system, its installation site onboard is recommended to be and the SCR postprocessor side at vehicle, to reduce the length of pipeline, the time of minimizing system response, increase system response sensitivity；
The system work of the present invention is to be controlled by the electronic control unit 22 of program set in advance, when row's temperature of electromotor 1 or NOx level reach certain level it is, electronic control unit 22 controls the aperture of proportioning valve 12, realize ammonia to change to the conveying of SCR postprocessor 19, meet the demand to NOX elimination under vehicle difference operating mode.
Claims (3)
1. the aftertreatment control unit of two-stage afterheat manner storing and supplying ammonia, is made up of electromotor, anti-icing fluid conveying pipe, electromagnetic valve, main ammonia storage tank, secondary ammonia storage tank, air filter, charge door, pressure transducer, ammonia storage tank temperature sensor, standby pipe valve, reducing gas conveying pipe, proportioning valve, electronic control unit, intake manifold temperature sensor, NOX sensor, reducing agent conduit, tail gas air inlet pipe, exhaust emission tube, SCR postprocessor, solid ammonia storage material, conduit, electronic control unit；nullIt is characterized in that: the anti-icing fluid conveying pipe main ammonia storage tank of traverse connected on electromotor、Secondary ammonia storage tank，It is positioned at main ammonia storage tank、Helically pipe-disc type structure is managed in secondary anti-icing fluid conveying within ammonia storage tank，Anti-icing fluid conveying pipe pipeline there is electromagnetic valve，Main ammonia storage tank、Secondary ammonia storage tank is internal fills solid ammonia storage material，Loading is the 40% of tank body volume，Main ammonia storage tank、Secondary ammonia storage tank top has charge door，It is connected to pressure transducer、Ammonia storage tank temperature sensor，Pressure transducer induction end probes into tank interior but does not contact solid ammonia storage material，Ammonia storage tank temperature sensor senses end inserts in solid ammonia storage material，Main ammonia storage tank has standby pipe valve，Conduit two ends are by air filter and main ammonia storage tank、Secondary ammonia storage tank connects，Conduit line has a proportioning valve，Article two, reducing gas conveying pipe connects main ammonia storage tank respectively、Secondary ammonia storage tank，Junction point has air filter，The reducing gas conveying pipe other end is also unified into reducing agent conduit，Reducing agent catheter nozzle is positioned at tail gas air inlet pipe pipe，Tail gas air inlet pipe is connected with SCR postprocessor inlet end，Tail gas air inlet pipe pipeline connects intake manifold temperature sensor、NOX sensor，Intake manifold temperature sensor、The induction end of NOX sensor is positioned at channel interior，SCR postprocessor outlet side is connected with exhaust emission tube，Pressure transducer、Ammonia storage tank temperature sensor、Intake manifold temperature sensor、NOX sensor is connected with electronic control unit signal receiving end by holding wire，Electronic control unit connects proportioning valve by power signal line、Electromagnetic valve.
2. the aftertreatment control unit of two-stage afterheat manner storing and supplying ammonia according to claim 1, it is characterized in that the preparation of described solid ammonia storage material and fill method are as follows: adopt the anhydrous magnesium chloride 58 parts of industry, expanded graphite 2 parts, deionized water 15 parts, industrial alcohol 10 parts and industry ball clay 15 parts, above-mentioned material adopts the dough mixing machine of machinery to mix the powder uniformly becoming hygrometric state, incorporation time 5 ~ 15min, it is filled into main ammonia storage tank by charge door, in secondary ammonia storage tank, the method adopting machinery concussion shakes main ammonia storage tank, secondary ammonia storage tank tank body 5 ~ 10min, remove the air gap therein, feeding quantity should cause the 40% of tank body volume capacity；Whole tank body is put in vacuum drying oven, begins to warm up from room temperature 25 DEG C under normal pressure, and average 5 DEG C/10min is warmed up to 70 DEG C, and during heat drying, charge door opens wide, and discharges water vapour and alcohol steam；Keep 30min at this temperature, then start vacuum pump, progressively evacuation at this temperature, divide and make for three times vacuum reach-10Kpa, heat-insulation pressure keeping 30min.
3. the aftertreatment control unit of two-stage afterheat manner storing and supplying ammonia according to claim 2, it is characterised in that described anhydrous magnesium chloride adopts energy and NH3The chloride forming complex substitutes.
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| CN201210224167.7A CN102733913B (en) | 2012-07-02 | 2012-07-02 | The aftertreatment control unit of two-stage afterheat manner storing and supplying ammonia |
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| CN102733913B true CN102733913B (en) | 2016-07-20 |
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| US8881507B2 (en) * | 2011-08-22 | 2014-11-11 | Mi Yan | Air driven reductant delivery system |
| CN104179554B (en) * | 2014-08-12 | 2016-08-17 | 吉林省众鑫汽车装备有限公司 | A kind of solid ammonia storage tank tail gas connection controls device and connects control method |
| CN107355284B (en) * | 2017-06-27 | 2019-09-03 | 中国第一汽车股份有限公司 | The solid ammonia ammonia Automatic Provisioning System of engine exhaust heat heating method |
| CN107327332B (en) * | 2017-06-27 | 2019-09-03 | 中国第一汽车股份有限公司 | SSCR system based on solid ammonia storage material |
| CN112924489B (en) * | 2021-02-05 | 2022-04-12 | 西南石油大学 | Low-temperature dangerous liquid accident leakage jet experiment device |
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| CN202673439U (en) * | 2012-07-02 | 2013-01-16 | 中国第一汽车股份有限公司 | System for storing and supplying ammonia by two-stage waste heat mode |
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| JP2001234734A (en) * | 2000-02-23 | 2001-08-31 | Meidensha Corp | NOx REMOVAL SYSTEM |
| US20090280047A1 (en) * | 2004-08-03 | 2009-11-12 | Claus Hviid Christensen | Solid ammonia storage and delivery material |
| CN101454064A (en) * | 2006-02-27 | 2009-06-10 | 氨合物股份公司 | A method of storing and delivering ammonia and the use of electromagnetic radiation for desorption of ammonia from a chemical complex |
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| CN202673439U (en) * | 2012-07-02 | 2013-01-16 | 中国第一汽车股份有限公司 | System for storing and supplying ammonia by two-stage waste heat mode |
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