CN108843430A - Act on the catalytic cleaner selective reduction ultrasonic wave gasification method of tail gas clean-up - Google Patents
Act on the catalytic cleaner selective reduction ultrasonic wave gasification method of tail gas clean-up Download PDFInfo
- Publication number
- CN108843430A CN108843430A CN201810725196.9A CN201810725196A CN108843430A CN 108843430 A CN108843430 A CN 108843430A CN 201810725196 A CN201810725196 A CN 201810725196A CN 108843430 A CN108843430 A CN 108843430A
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- China
- Prior art keywords
- urea
- pid
- atomization
- ultrasonic
- catalysis
- 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.)
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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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
- F01N2610/146—Control thereof, e.g. control of injectors or injection valves
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1486—Means to prevent the substance from freezing
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses catalytic cleaner first the selecting property reduction ultrasonic wave gasification method for acting on tail gas clean-up, external power supply is accessed automatically controlled PLC by the present invention, and automatically controlled PLC powers to PID, and PID control entirely post-processes the circulatory system；Compressed air is accessed in adding blue tank, forms minute-pressure, and urea liquid is inputted into ultrasonic atomization operating room；Urea liquid is entered in catalysis silencing purifier after ultrasonic atomizatio through pipeline；Urea obtains the conversion ratio for being converted into nitrogen oxides PPM value through nitrogen oxide sensor detection, PID is transferred to by CAN signal, PID calculates atomization urea amount needed for obtaining nitrogen oxides PPM value, obtain the Current Voltage value of MOS, MOS controls Ultrasonic atomization generator and converts atomization urea for liquid area, in the urea input catalysis silencing purifier being atomized, whole process forms CAN signal circulation.The present invention switchs to liquid area by ultrasonic wave to be atomized urea, has abandoned the use of high-accuracy nozzle, has also solved the problems, such as urea crystals.
Description
Technical field
The present invention relates to the catalytic cleaner selective reduction ultrasonic wave gasification methods for acting on tail gas clean-up, belong to
Tail gas exhaust post-processing technology field.
Background technique
Catalysis silencing purifier is the key that applied to engine, automobile engine or the Industrial Stoves portion for having tail gas to be discharged
Part, and guarantee that exhaust emissions reaches the important component of national environmental protection laws and regulations requirement, its effect will contain pernicious gas
Tail gas carries out oxidation and reduction reaction by the effect of catalyst in catalytic converter, becomes innocuous gas and be discharged in air.?
During this, it is necessary to have the participation of ammonia, be just conducive to by tail gas carbon monoxide, hydrocarbon, oxynitrides,
The compound of lead is converted into water and innocuous gas, and the participation form of ammonia, is to be changed by urea, urea liquid is sprayed through urea
Mouth realizes urea jet atomization, and the urea mist after atomization forms superfine small homogeneous microparticle, fast under the appropriate temperature conditions
Speed is converted into ammonia and participates in during the catalytic purification of tail gas, and the critical component during this is urea nozzle, urea
The required precision of nozzle is very high, and required precision is not achieved, and easily forms urea crystals, plug nozzle in urea is spraying.Mesh
The preceding precision part only company of German Bosch, CPG Gmbh & Co., Delphi company of the U.S. product can just accomplish required precision,
Domestic urea nozzle is since the error in hole is big, and often atomization unevenly leads to crystalline polamer occur in course of injection.
Summary of the invention
Technical problem to be solved by the present invention lies in provide the catalytic cleaner selective reduction for acting on tail gas clean-up
Ultrasonic wave gasification method solves the deficiency that the jet atomization of existing urea can only lean on high precision nozzle to realize.
In order to solve the above-mentioned technical problem, following technical measures are used：The catalytic cleaner for acting on tail gas clean-up is first
Selecting property restores ultrasonic wave gasification method, includes the following steps：
（1）The external power supply of engine or automobile storage battery power supply or kiln is accessed into automatically controlled PLC, power supply is provided, automatically controlled PLC to
PID power supply, PID control entirely post-process the circulatory system；
（2）Compressed air is accessed in adding blue tank, depressurizes by decompression solenoid valve and pressure controller and to form minute-pressure, by urea solution
Body inputs ultrasonic atomization operating room；Fluid level controller, Ultrasonic atomization generator, stream are provided in ultrasonic atomization operating room
Meter；
（3）Urea liquid is entered in catalysis silencing purifier after ultrasonic atomizatio through pipeline；
（4）The urea being atomized obtains through nitrogen oxide sensor detection after entering catalysis silencing purifier and is converted into nitrogen oxides PPM
The conversion ratio of value is transferred to PID by CAN signal, and PID calculates atomization urea amount needed for obtaining nitrogen oxides PPM value, into
And obtaining the Current Voltage value of MOS, MOS controls Ultrasonic atomization generator and converts atomization urea for liquid area, is atomized
Urea input catalysis silencing purifier in, whole process formed CAN signal circulation.
The present invention for taking above-mentioned measure accesses compressed air on adding blue tank, and existing metering ejector pump is changed to surpass
Sound wave is atomized operating room, urea pump is entered ultrasonic atomization operating room by decompression solenoid valve, pressure controller, urea is through ultrasound
Input catalysis silencing purifier is realized so that urea just becomes spray pattern before entering catalysis silencing purifier after wave atomization
It is able to achieve cancelling high-accuracy spray nozzle the effect of urea atomization.
Whole system uses engine, automobile storage battery power supply or hair to connect power supply power supply, accesses automatically controlled PLC, automatically controlled PLC
It powers to PID.PID passes through the NOx sensor detection being mounted on catalysis silencing purifier and show that atomization urea is converted into
The conversion ratio of nitrogen oxides PPM value, and then control MOS（Field-effect tube）Current Voltage, control ultrasonic wave operating room in ultrasound
The working condition of wave atomizing generator controls the haze value of urea, realize the essence that output-detection-feedback-adjustment-exports again
Quasi- control loop, specifically：Nitrogen oxides PPM value conversion ratio CAN signal-PID-MOS current value CAN signal-ultrasonic atomization
Generator flow value CAN signal-nitrogen oxides PPM value conversion ratio CAN signal, whole system program automatically controlled integrated electricity using PLC
Road is realized, the ECU of required CAN signal access engine or automobile or kiln is provided.
The present invention realizes that liquid area switchs to atomic small atomization urea and conveys into catalytic muffler by ultrasonic atomization
Purpose can improve urea and exhaust gas mixing uniformity in catalytic muffler to abandon the use of high-accuracy nozzle,
To improve catalytic conversion, solve because nozzle orifice size is inconsistent, so that spraying granule is excessive, in quick flow not
Caused NH_3 leakage can be all vaporized, while also solving the hard nut to crack of the urea crystals often occurred.
Specific embodiment
Embodiment 1
（1）By engine or the automatically controlled PLC of automobile storage battery plant-grid connection, power supply is provided, automatically controlled PLC powers to PID, and catalysis is eliminated the noise net
The temperature sensor setting discharge national standard temperature value changed on device provides CAN signal to PID, and PID control entirely post-processes cyclic system
System, system brings into operation after energization；
（2）Compressed air is accessed in adding blue tank, depressurizes by decompression solenoid valve and pressure controller and to form minute-pressure, by urea solution
Body inputs ultrasonic atomization operating room by pipeline；The design of ultrasonic atomization operating room has torsion lid or fastened by screw cover board, internal
It is provided with fluid level controller, Ultrasonic atomization generator, flowmeter；
（3）Urea liquid in ultrasonic atomization operating room by ultrasonic atomizatio after through pipeline enter catalysis silencing purifier in；Step
Suddenly（2）And step（3）The pipeline is corrosion resistant stainless steel tube, according to catalysis silencing purifier design interface access.
（4）The urea being atomized, which enters after catalysis silencing purifier, show that every 0.1-1ML is atomized through nitrogen oxide sensor detection
Urea is converted into the conversion ratio of nitrogen oxides PPM value, is transferred to PID by CAN signal, PID calculates to obtain nitrogen oxides PPM
Atomization urea amount needed for value, and then obtain to obtain the atomization urea amount, the Current Voltage value that MOS need to be controlled, MOS control ultrasound
Liquid area is converted atomization urea by wave atomizing generator, is atomized in urea input catalysis silencing purifier, whole process
Form CAN signal circulation.The present invention is divided into urea pressurization, ultrasonic atomization, is pumped into catalysis silencing purifier；CAN signal circulation
Two parts.Whole system takes PLC to become automatically controlled integrated circuit and software numerical control to realize, replaces existing After-treatment technics
System provides required CAN signal access engine or automobile ECU.
Embodiment 2
（1）The external power supply of kiln is accessed into automatically controlled PLC, power supply is provided, automatically controlled PLC powers to PID, is catalyzed on silencing purifier
Temperature sensor setting discharge national standard temperature value provide CAN signal to PID, PID control entirely post-processes the circulatory system, be powered
System brings into operation afterwards；
Step（2）Step（3）And step（4）Implement by remaining step of embodiment 1, last whole system takes PLC to become electricity
Integrated circuit and software numerical control are controlled to realize, replaces the after-treatment system of existing kiln, required CAN signal access kiln is provided
ECU。
Claims (1)
1. acting on the catalytic cleaner selective reduction ultrasonic wave gasification method of tail gas clean-up, it is characterised in that the method packet
Include following step：
（1）The external power supply of the battery power or kiln of engine or automobile is accessed into automatically controlled PLC, power supply is provided, automatically controlled PLC to
PID power supply, PID control entirely post-process the circulatory system；
（2）Compressed air is accessed in adding blue tank, depressurizes by decompression solenoid valve and pressure controller and to form minute-pressure, by urea solution
Body inputs ultrasonic atomization operating room；Fluid level controller, Ultrasonic atomization generator, stream are provided in ultrasonic atomization operating room
Meter；
（3）Urea liquid is entered in catalysis silencing purifier after ultrasonic atomizatio through pipeline；
（4）The urea being atomized obtains through nitrogen oxide sensor detection after entering catalysis silencing purifier and is converted into nitrogen oxides PPM
The conversion ratio of value is transferred to PID by CAN signal, and PID calculates atomization urea amount needed for obtaining nitrogen oxides PPM value, into
And obtaining the Current Voltage value of MOS, MOS controls Ultrasonic atomization generator and converts atomization urea for liquid area, is atomized
Urea input catalysis silencing purifier in, whole process formed CAN signal circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810725196.9A CN108843430A (en) | 2018-07-04 | 2018-07-04 | Act on the catalytic cleaner selective reduction ultrasonic wave gasification method of tail gas clean-up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810725196.9A CN108843430A (en) | 2018-07-04 | 2018-07-04 | Act on the catalytic cleaner selective reduction ultrasonic wave gasification method of tail gas clean-up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108843430A true CN108843430A (en) | 2018-11-20 |
Family
ID=64201099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810725196.9A Pending CN108843430A (en) | 2018-07-04 | 2018-07-04 | Act on the catalytic cleaner selective reduction ultrasonic wave gasification method of tail gas clean-up |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100069761A (en) * | 2008-12-17 | 2010-06-25 | 현대중공업 주식회사 | Urea atomization system with ultra sonic and heat source for scr system |
| CN103470351A (en) * | 2013-08-02 | 2013-12-25 | 中国人民解放军军事交通学院 | Diesel engine tail gas selective catalytic reducing agent adding device and method |
| CN105019988A (en) * | 2015-08-03 | 2015-11-04 | 包头北大工道发动机技术有限公司 | Vehicle-mounted urea solution metering, ultrasonic atomizing and supplying device |
| CN205638634U (en) * | 2016-04-29 | 2016-10-12 | 陈聪 | Adopt motor vehicle exhaust processing apparatus of ultrasonic atomization device |
| CN207538904U (en) * | 2017-10-16 | 2018-06-26 | 山东君成环境检测有限公司 | A kind of motor-driven vehicle gas disposal and detection device |
-
2018
- 2018-07-04 CN CN201810725196.9A patent/CN108843430A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100069761A (en) * | 2008-12-17 | 2010-06-25 | 현대중공업 주식회사 | Urea atomization system with ultra sonic and heat source for scr system |
| CN103470351A (en) * | 2013-08-02 | 2013-12-25 | 中国人民解放军军事交通学院 | Diesel engine tail gas selective catalytic reducing agent adding device and method |
| CN105019988A (en) * | 2015-08-03 | 2015-11-04 | 包头北大工道发动机技术有限公司 | Vehicle-mounted urea solution metering, ultrasonic atomizing and supplying device |
| CN205638634U (en) * | 2016-04-29 | 2016-10-12 | 陈聪 | Adopt motor vehicle exhaust processing apparatus of ultrasonic atomization device |
| CN207538904U (en) * | 2017-10-16 | 2018-06-26 | 山东君成环境检测有限公司 | A kind of motor-driven vehicle gas disposal and detection device |
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Application publication date: 20181120 |
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