CN207647577U - A kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system - Google Patents
A kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system Download PDFInfo
- Publication number
- CN207647577U CN207647577U CN201721184257.2U CN201721184257U CN207647577U CN 207647577 U CN207647577 U CN 207647577U CN 201721184257 U CN201721184257 U CN 201721184257U CN 207647577 U CN207647577 U CN 207647577U
- Authority
- CN
- China
- Prior art keywords
- urea
- heat pipe
- host
- flue
- diesel engine
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model is related to a kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution systems, include the host flue of one end connection marine engine, further include host flue branch pipe, heat pipe converter, urea hot vaporizer；Host flue branch pipe returns to host flue after being sequentially connected heat pipe converter, urea hot vaporizer；Heat pipe converter is connect with the outlet pipe of auxiliary generator peculiar to vessel.The thermal energy of subsidiary engine high-temperature flue gas is transmitted in the flue gas of host extraction by the utility model using existing auxiliary generator peculiar to vessel on ship, with hot pipe technique, using ship itself thermal energy, is heated to the flue gas of extraction.It solves in the case of the diesel engine operating temperature relatively low demand that cannot be satisfied urea liquid evaporation and SCR reactions, how without additionally consuming the energy without the excessive equipment of increase, heating can be realized, meet the problem of the needs of urea liquid evaporation and SCR reactions.
Description
Technical field
The utility model is related to pyrolysis systems, and in particular to a kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system.
Background technology
With the worsening of global environment and the gradual reinforcement of people's environmental consciousness, atmosphere pollution caused by ship has been drawn
Play the extensive concern of international community, International Maritime Organization（IMO）Marine diesel needs strict implement from clear stipulaties 2016
The emission regulation of TIERIII.In nitrogen oxides post-processing technology, selective catalytic reduction（SCR）Be acknowledged as it is most ripe,
Effective measures.In conjunction with the present situation that Marine Diesel Engine's Harmful Exhaust Emission controls, the SCR being commonly used in industry is applied to ship bavin
Oil machine reduces the discharge of nitrogen oxides in the case where not increasing spot ship Rate of Fuel Consumption of Diesel, related to meet
Limitation requirement of the emission regulation to nitrogen oxides.
The reducing agent of SCR system peculiar to vessel is the urea liquid of 40% concentration, and urea liquid flashes to the temperature range of ammonia
It it is 300-600 DEG C, the operating temperature of conventional Medium temperature SCR catalyst is 300-450 DEG C, and middle high speed diesel engine delivery temperature generally exists
Between 280-500 DEG C, so for Medium and high speed engine, SCR system uses 40% urea liquid can as reducing agent
To be effectively removed the NO in diesel exhaustX。
However, the diesel engine operating temperature of ship's speed low-speed diesel engine or propulsion characteristic will be far below Medium and high speed engine,
Between the delivery temperature of general marine low speed diesel engine is 170 ~ 250 DEG C, at this moment need at low-speed diesel engine exhaust
Reason is unable to reach expected purpose using conventional SCR system.Lower diesel exhaust gas temperature is made using SCR system congregation
The poisoning of catalyst and the incomplete evaporation of urea liquid lead to entire SCR system to generate crystalline solid in the duct
It can not long-term Effec-tive Function.
Currently used solution needs newly-increased add fuel one is a burner is increased on SCR system pipeline
Pump unit and blowing system, the high-temperature flue gas gone out by burner combustion, which is evaporated urea liquid, generates ammonia with water, separately
One is electric heater unit is used, the heating of diesel engine flue-gas temperature is reached into the optimum temperature needed for Urea Evaporation, both sides
Case is required for the additional consumption energy, needs to increase excessive equipment.
Invention content
The utility model is to solve the diesel engine operating temperature of ship's speed low-speed diesel engine or propulsion characteristic relatively low to cannot be satisfied
Urea liquid evaporates and the demand of SCR reactions, existing solution are required to the additional consumption energy, needs to increase excessive set
Standby problem provides a kind of without the additional consumption energy and diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system simple in structure
System.
The utility model is achieved through the following technical solutions above-mentioned purpose：
A kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system, including host flue, the host fume pipe
Road one end connects marine engine, further includes host flue branch pipe, heat pipe converter, urea hot vaporizer；The host cigarette
Feed channel branch pipe returns to host flue after being sequentially connected heat pipe converter, urea hot vaporizer；The heat pipe converter with
The outlet pipe of auxiliary generator peculiar to vessel connects.
Further, the heat pipe converter includes smoke inlet, exhanst gas outlet, hot-wind inlet；The smoke inlet is logical
It crosses host flue branch pipe to connect with host flue, exhanst gas outlet is connect with urea hot vaporizer one end, host flue gas
From smoke inlet enter heat pipe converter after from exhanst gas outlet be discharged, into urea hot vaporizer；Hot-wind inlet and auxiliary peculiar to vessel
The outlet pipe of generator connects, and auxiliary generator flue gas peculiar to vessel enters heat pipe converter from hot-wind inlet.
Further, thermometer is set on the urea hot vaporizer.
Further, it is additionally provided with smoke flow control valve, the smoke flow control valve setting is in connection host flue gas
On the host flue branch pipe of pipeline and heat pipe converter.
Further, the host flue other end is connect by mixer with SCR reactors.
Further, the heat pipe converter further includes cold wind outlet, is connected with muffler.
Further, urea nozzle is set in the urea hot vaporizer, and the urea nozzle is stored by pump and urea
Cabinet is connected.
The characteristics of the utility model is：
Auxiliary generator peculiar to vessel supplies power unit as marine vessel power, for the diesel engine of constant speed operating, delivery temperature ratio
Higher, general 280-500 DEG C, normally under load-carrying operating mode, delivery temperature is all higher than 300 DEG C, and the utility model utilizes ship
The thermal energy of subsidiary engine high-temperature flue gas, the flue gas of host extraction is transmitted to hot pipe technique by upper existing auxiliary generator peculiar to vessel
In.Very high thermal conductivity that heat pipe has, excellent isothermal, heat flow density changeability, direction of heat flow drink invertibity, can long distance
The heat exchanger formed from heat transfer, thermostatic characteristics (controllable heat pipe), thermal diode and thermal switch performance and by heat pipe has heat transfer
Small etc. series of advantages is damaged in efficient, compact-sized, fluid resistance, and the high-temperature flue gas of auxiliary generator peculiar to vessel is in heat pipe converter
Inside is transmitted to the other end from one end of heat pipe, carries out heat exchange to low temperature side flue gas, flue gas is made to reach reaction required temperature,
It realizes in the case of the diesel engine operating temperature relatively low demand that cannot be satisfied urea liquid evaporation and SCR reactions, utilizes
Ship itself thermal energy heats the flue gas of extraction, meets the needs of urea liquid evaporation and SCR reactions, removes in flue gas
NOX.The program is simple in structure and without the additional consumption energy.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
In attached drawing, parts list represented by the reference numerals are as follows：
1, host flue branch pipe；2, heat pipe converter；3, urea hot vaporizer；4, auxiliary generator peculiar to vessel；5, main
Machine flue；6, mixer；7, SCR reactors；8, muffler；9, it pumps；10, urea storage cabinet；11, marine engine；12, warm
Degree meter；13, smoke flow control valve；14, urea nozzle.
Specific implementation mode
Diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system includes the host fume pipe installed additional from host flue 5
Road branch pipe 1,5 one end of host flue connect marine engine 11, which passes through host flue 5
The flue gas that enough Urea Evaporations are introduced from marine engine 11 enters heat pipe converter 2 from heat pipe converter smoke inlet.Heat
The hot-wind inlet of pipe converter is connect with the outlet pipe of auxiliary generator 4 peculiar to vessel, using hot pipe technique, by auxiliary power generation peculiar to vessel
The thermal energy of machine high-temperature flue gas is transmitted in the flue gas of host extraction, and the host flue gas of extraction is made to rise to 300-500 from 200 DEG C
℃。
Flue gas after heating is sent to urea liquid evaporator 3 from heat pipe converter exhanst gas outlet, is set in urea hot vaporizer 3
Urea nozzle 14 is set, urea is sprayed, is evaporated urea liquid in evaporator using high-temperature flue gas, generates ammonia and water,
Then the ammonia that evaporation generates is sent back to again in the flue 5 of host again, is converged with the flue gas of host discharge, formation reaches
The mixed gas of SCR catalyst operating temperature.
Host flue 5 is connect by mixer 6 with SCR reactors 7, and host flue gas converges shape with the ammonia after evaporation
At mixed gas mixed by mixer 6, be sent into SCR reactors 7, to improve the denitration efficiency of host SCR system,
The reducing agent ingredient of urea liquid is set to be fully utilized, processing terminates, and will remove NOXFlue gas emission afterwards is gone out.
Urea hot vaporizer 3 is provided with thermometer 12, the host flue gas of connection host flue 5 and heat pipe converter 2
Smoke flow control valve 13 is provided in pipeline branch pipe 1, can according to the flue-gas temperature or response situation in urea hot vaporizer 3,
The size of flue gas flow is adjusted by smoke flow control valve 13.
Heat pipe converter 2 further includes cold wind outlet, is connected with muffler 8；Urea nozzle 14 in urea hot vaporizer 3 is logical
Pump 9 is crossed with urea cabinet 10 to be connected.
The utility model is using existing auxiliary generator peculiar to vessel on ship, with hot pipe technique by subsidiary engine high-temperature flue gas
Thermal energy is transmitted in the flue gas of host extraction.Realization is lower in diesel engine operating temperature, utilizes ship itself
Thermal energy heats the flue gas of extraction, meets the needs of urea liquid evaporation and SCR reactions, removes the NO in flue gasX.The program
It is simple in structure and without the additional consumption energy.
Claims (7)
1. a kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system, including host flue（5）, the host flue gas
Pipeline（5）One end connects marine engine（11）, which is characterized in that further include host flue branch pipe（1）, heat pipe converter
（2）, urea hot vaporizer（3）；The host flue branch pipe（1）It is sequentially connected heat pipe converter（2）, urea hot vaporizer
（3）After return to host flue（5）；The heat pipe converter（2）With auxiliary generator peculiar to vessel（4）Outlet pipe connection.
2. a kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system according to claim 1, which is characterized in that described
Heat pipe converter（2）Including smoke inlet, exhanst gas outlet, hot-wind inlet；The smoke inlet passes through host flue branch pipe
（1）With host flue（5）Connection, exhanst gas outlet and urea hot vaporizer（3）One end connects, and host flue gas is from smoke inlet
Into heat pipe converter（2）It is discharged afterwards from exhanst gas outlet, into urea hot vaporizer（3）；Hot-wind inlet and auxiliary power generation peculiar to vessel
Machine（4）Outlet pipe connection, auxiliary generator flue gas peculiar to vessel enters heat pipe converter from hot-wind inlet（2）.
3. a kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system according to claim 1 or claim 2, which is characterized in that institute
State urea hot vaporizer（3）Upper setting thermometer（12）.
4. a kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system according to claim 3, which is characterized in that also set
It is equipped with smoke flow control valve（13）, the smoke flow control valve（13）Setting is in connection host flue（5）And heat pipe
Converter（2）Host flue branch pipe（1）On.
5. a kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system according to claim 1 or claim 2, which is characterized in that institute
State host flue（5）The other end passes through mixer（6）With SCR reactors（7）Connection.
6. a kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system according to claim 1 or claim 2, which is characterized in that institute
It further includes cold wind outlet to state heat pipe converter, with muffler（8）It is connected.
7. a kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system according to claim 1 or claim 2, which is characterized in that institute
State urea hot vaporizer（3）Interior setting urea nozzle（14）, the urea nozzle（14）Pass through pump（9）With urea cabinet（10）
It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721184257.2U CN207647577U (en) | 2017-09-15 | 2017-09-15 | A kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721184257.2U CN207647577U (en) | 2017-09-15 | 2017-09-15 | A kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207647577U true CN207647577U (en) | 2018-07-24 |
Family
ID=62887002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721184257.2U Active CN207647577U (en) | 2017-09-15 | 2017-09-15 | A kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207647577U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026296A (en) * | 2018-08-27 | 2018-12-18 | 潍柴动力股份有限公司 | A kind of heating device, heating means and the vehicle of urea for vehicle system |
| CN110206620A (en) * | 2019-05-06 | 2019-09-06 | 江苏大学 | A kind of self feed back controllable register formula SCR urea mixer |
-
2017
- 2017-09-15 CN CN201721184257.2U patent/CN207647577U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026296A (en) * | 2018-08-27 | 2018-12-18 | 潍柴动力股份有限公司 | A kind of heating device, heating means and the vehicle of urea for vehicle system |
| CN110206620A (en) * | 2019-05-06 | 2019-09-06 | 江苏大学 | A kind of self feed back controllable register formula SCR urea mixer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9657972B2 (en) | Solar-biomass complementary thermal energy supply system | |
| CN103585867B (en) | A kind of flue gas desulfurization and denitration method and device | |
| CN109945223B (en) | Full-working-condition auxiliary denitration system and operation method | |
| CN207647577U (en) | A kind of diesel engine SCR urea exhaust gas heat pipe heat of evaporation solution system | |
| CN109404958B (en) | Energy-saving synergistic anti-blocking method and system based on bypass flue of air preheater | |
| CN208406637U (en) | A kind of hydrolysis of urea denitrating system ammonia-gas spraying device heating dilution wind | |
| CN203011002U (en) | Direct-fired lithium bromide absorption type heating and refrigerating unit with smoke valve and used for recovering smoke waste heat | |
| CN211739492U (en) | Boiler low-temperature corrosion prevention device with heat conduction oil for heat storage | |
| CN211739522U (en) | Sludge and coal slime drying device of solar energy fused salt energy storage | |
| CN209378806U (en) | A kind of low energy consumption afterburning heated type denitrating system | |
| CN208089381U (en) | A kind of exhaust heat of internal combustion engine utilizes device | |
| CN209378805U (en) | A kind of distributed denitrating system of low energy consumption | |
| CN216778480U (en) | Wide-load coal-fired boiler denitration system | |
| CN207647580U (en) | A kind of diesel engine SCR urea high-temperature flue gas evaporation pyrolysis system | |
| CN212296578U (en) | Tail gas aftertreatment system with waste heat recovery device | |
| CN111238039B (en) | Device for preventing boiler low-temperature corrosion by heat conduction oil heat storage and working method | |
| CN104329147A (en) | Automobile engine tail gas utilization device | |
| CN210021739U (en) | SCR denitration system for industrial kiln tail gas NOx | |
| CN204177191U (en) | Highly effective aluminium-melting stove catalytic combustion system | |
| CN207647579U (en) | A kind of diesel engine SCR urea waste gas burning evaporation pyrolysis system | |
| CN108757123B (en) | Multistage SCR series system for ship and control method thereof | |
| CN203515743U (en) | Urea pump water heating device for aftertreatment of engine tail gas | |
| CN103743152B (en) | Engine tail gas waste-heat temperature regulating device | |
| CN203620486U (en) | External heating type wet flue gas dehumidification system | |
| CN204200319U (en) | A kind of automobile engine tail gas utilized device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |