CN206577604U - A kind of marine low speed diesel engine vent gas denitration temperature control system - Google Patents
A kind of marine low speed diesel engine vent gas denitration temperature control system Download PDFInfo
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- CN206577604U CN206577604U CN201720257270.XU CN201720257270U CN206577604U CN 206577604 U CN206577604 U CN 206577604U CN 201720257270 U CN201720257270 U CN 201720257270U CN 206577604 U CN206577604 U CN 206577604U
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- control system
- temperature sensor
- diesel engine
- air
- temperature
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Abstract
The utility model is related to a kind of marine low speed diesel engine vent gas denitration temperature control system, including diesel engine, burner, blender, reactor, air-introduced machine, fuel tank and control system, the control system includes controller, voltage-stabilized power supply, the first temperature sensor, second temperature sensor, three-temperature sensor and damping device；The utility model is simple in construction, the degree of modularity is high, integrated level is high, by setting controller, Real-time Feedback is made according to temperature signal, control fuel tank is transported to the absorbing quantity that the fuel feed and air-introduced machine of burner are drawn from reactor, and then adjust the reaction temperature and the waste gas velocity of discharge of reactor, catalyst reaction activity is improved, the possibility that reduction catalyst pores are blocked reduces nitrogen oxides air and stained；By setting voltage-stabilized power supply to power, it is ensured that the stability that equipment is powered and run；By setting shock mitigation system, make the stable of device, improve security performance, it is reasonable in design.
Description
Technical field
The utility model is related to technical field of ships, more particularly to a kind of marine low speed diesel engine vent gas denitration temperature control system
System.
Background technology
Pollution for control marine exhaust pollutant to air, International Maritime Organization (IMO) formulates《Prevent ship from causing greatly
Gas pollution rule》, its amendment require marine exhaust in nitrogen oxides have to pass through processing it is up to standard after could discharge.Cause
This, boat diesel engine must be equipped with marine exhaust denitrating system, SCR technology (Selective Catalytic
Reduction, SCR) as a kind of ripe denitration technology, as a kind of current application most strong diesel engine vent gas denitration skill
Art.It is nitrogen and water by conversion of nitrogen oxides using reducing agent under catalyst action.
Catalyst is the core of the technology, and catalyst optimum activity temperature is 300~450 DEG C, and general low speed peculiar to vessel
Exhaust temperature is 220~280 DEG C after diesel pressure booster, less than SCR catalyst lowest activity temperature requirement.SCR reactors are transported
Aqueous solution of urea can be sprayed into gas exhaust piping during row, it is possible to can enter in diesel pressure booster, influence diesel engine increases
The using effect of depressor and life-span, diesel pressure booster is caused serious harm while catalyst may occur to crush.The opposing party
Face, the temperature of waste gas is relatively low after turbocharger, and the oxysulfide in waste gas is easily generated under cryogenic with ammonia
Ammonium hydrogen sulfate, blocking catalyst hole, and then cause catalytic efficiency to reduce, influence SCR system is normally run.
Utility model content
The purpose of this utility model is to provide a kind of marine low speed diesel engine vent gas denitration temperature control system, can arrange ship
Put EGT and meet SCR reaction temperatures, carry out denitration reaction, reduction nitrogen oxides stains air.
The utility model is to be achieved through the following technical solutions：
A kind of marine low speed diesel engine vent gas denitration temperature control system, including diesel engine, burner, blender, reactor, draw
Blower fan, fuel tank and control system, the control system include controller, voltage-stabilized power supply, the first temperature sensor, second temperature
Burner is connected with by exhaust inlet pipe on the right side of sensor, three-temperature sensor and damping device, the diesel engine, it is described
It is connected with the downside of burner by fuel -supply pipe on the right side of fuel tank, the burner and blender is connected with by heating tube, institute
State to be connected with the downside of reactor, the reactor by air entraining pipe on the right side of blender and air-introduced machine be connected with by waste gas escape pipe,
First temperature sensor, second temperature sensor, three-temperature sensor are sequentially arranged at heating tube, air entraining pipe, waste gas
On escape pipe, the controller is connected to the first temperature sensor, second temperature sensor, the 3rd temperature by signal conductor
Spend sensor, fuel tank, on air-introduced machine, the controller is also associated with voltage-stabilized power supply, and the voltage-stabilized power supply is additionally attached to air inducing
On machine, it is ensured that the stability that controller and fan power are powered, the controller and voltage-stabilized power supply are placed in damping device,
Wire spring is provided with the damping device, damping device is connected with ship body, reduces the vibrations of interior instrument, it is ensured that whole
The stability of body device.
Further, urea liquid ejecting gun is provided with the blender, the spout of the urea ejecting gun is positioned at close
The side of air entraining pipe, waste gas is sufficiently mixed with urea liquid, is conducive to reacting abundant progress.
Further, it is provided with the fuel tank and air-introduced machine on valve, the valve and is provided with gate valve drive device,
The temperature signal that controller is sent by the first temperature sensor, second temperature sensor, three-temperature sensor, to lock
Valve drive makes the instruction for opening and closing size, carrys out the size of control valve opening.
Further, the import of the reactor is disposed as pyramidal structure with outlet, is easy to reactant in reactor
Sufficiently reacted.
Further, the heating tube is electric heating tube, and the heating tube outer cladding one layer of heat preservation cotton prevents heat not
Necessary loss, saves the energy.
Compared with prior art, the beneficial effects of the utility model are：The utility model is simple in construction, the degree of modularity
Height, integrated level is high, it is easy to assembles and meets different use spaces, can meet most of application scenarios, by setting controller, root
The temperature signal sent according to the first temperature sensor, second temperature sensor, three-temperature sensor makes Real-time Feedback,
Control fuel tank is transported to the absorbing quantity that the fuel feed and air-introduced machine of burner are drawn from reactor, and then adjusts reactor
Reaction temperature and the waste gas velocity of discharge, improve the reactivity of SCR catalyst, and reduce catalyst pores blocking possibility
Property, reduce nitrogen oxides air and stain；By setting voltage-stabilized power supply to power, it is ensured that the stability that equipment is powered and run；It is logical
Setting shock mitigation system is crossed, makes the stable of device, security performance is improved, it is reasonable in design.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1st, diesel engine, 2, burner, 3, blender, 4, reactor, 5, air-introduced machine, 6, controller, 7, fuel tank,
8th, voltage-stabilized power supply, the 9, first temperature sensor, 10, second temperature sensor, 11, three-temperature sensor, 12, gas inlet
Pipe, 13, heating tube, 14, air entraining pipe, 15, fuel -supply pipe, 16, waste gas escape pipe, 17, damping device.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain
The utility model, is not used to limit the utility model.
Referring to Fig. 1, Fig. 1 is structural representation of the present utility model.
A kind of marine low speed diesel engine vent gas denitration temperature control system, including diesel engine 1, burner 2, blender 3, reactor
4th, air-introduced machine 5, fuel tank 7 and control system, the control system include controller 6, voltage-stabilized power supply 8, the first temperature sensor
9th, second temperature sensor 10, three-temperature sensor 11 and damping device 17, the right side of diesel engine 1 pass through exhaust inlet pipe
12 are connected with burner 2, and the downside of burner 2 is connected with fuel tank 7, the right side of burner 2 by fuel -supply pipe 15
Blender 3 is connected with by heating tube 13, the right side of blender 3 is connected with reactor 4, the reactor by air entraining pipe 14
4 downsides are connected with air-introduced machine 5, first temperature sensor 9, second temperature sensor the 10, the 3rd by waste gas escape pipe 16
Temperature sensor 11 is sequentially arranged at heating tube 13, air entraining pipe 14, on waste gas escape pipe 16, and the controller 6 is led by signal
Line is connected to the first temperature sensor 9, second temperature sensor 10, three-temperature sensor 11, fuel tank 7, air-introduced machine 5
On, the controller 6 is also associated with voltage-stabilized power supply 8, and the voltage-stabilized power supply 8 is additionally attached on air-introduced machine 5, it is ensured that the He of controller 6
The stability that the power supply of air-introduced machine 5 is powered, the controller 6 and voltage-stabilized power supply 8 are placed in damping device 17, the damping device
Wire spring is provided with 17, damping device 17 is connected with ship body, reduces the vibrations of interior instrument, it is ensured that single unit system
Stability；Urea liquid ejecting gun is provided with the blender 3, the spout of the urea ejecting gun is located at one close to air entraining pipe
Side, waste gas is sufficiently mixed with urea liquid, is conducive to reacting abundant progress；Set on the fuel tank 7 and air-introduced machine 5
It is equipped with valve, the valve and is provided with gate valve drive device, controller 6 is sensed by the first temperature sensor 9, second temperature
The temperature signal that device 10, three-temperature sensor 11 are sent, the finger for opening and closing size is made to gate valve drive device
Show, carry out the size of control valve opening；The import of the reactor 4 is disposed as pyramidal structure with outlet, is easy to reactant to exist
Sufficiently reacted in reactor；The heating tube 13 is electric heating tube, and the outer cladding one layer of heat preservation cotton of heating tube 13 prevents
The only unnecessary loss of heat, saves the energy.
The operation principle of the present apparatus is：When in use, the first temperature sensor 9, second temperature sensor 10, the 3rd temperature
Real time temperature signal is passed to controller 6 by sensor 11, and controller 6 could be made that feedback regulation to control fuel tank 7 and air inducing
The size of the valve switch of machine 5, voltage-stabilized power supply 8 ensures the stability that controller 6 and the power supply of air-introduced machine 5 are powered, and damping device 17 is protected
The overall stability of device is demonstrate,proved.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of marine low speed diesel engine vent gas denitration temperature control system, including diesel engine, burner, blender, reactor, air inducing
Machine, fuel tank and control system, the control system include controller, voltage-stabilized power supply, the first temperature sensor, second temperature and passed
Sensor, three-temperature sensor and damping device, it is characterised in that：Combustion is connected with by exhaust inlet pipe on the right side of the diesel engine
It is connected with the right side of fuel tank, the burner and is connected with by heating tube by fuel -supply pipe on the downside of burner, the burner
It is connected with the downside of reactor, the reactor and is connected by waste gas escape pipe by air entraining pipe on the right side of blender, the blender
There is air-introduced machine, first temperature sensor, second temperature sensor, three-temperature sensor are sequentially arranged at heating tube, drawn
On tracheae, waste gas escape pipe, the controller is connected to the first temperature sensor, second temperature by signal conductor and sensed
Device, three-temperature sensor, fuel tank, on air-introduced machine, the controller is also associated with voltage-stabilized power supply, and the voltage-stabilized power supply also connects
It is connected on air-introduced machine, the controller and voltage-stabilized power supply are placed in damping device, steel wire bullet is provided with the damping device
Spring.
2. a kind of marine low speed diesel engine vent gas denitration temperature control system according to claim 1, it is characterised in that：It is described mixed
Urea liquid ejecting gun is provided with clutch, the spout of the urea ejecting gun is located at close to the side of air entraining pipe.
3. a kind of marine low speed diesel engine vent gas denitration temperature control system according to claim 1, it is characterised in that：The combustion
It is provided with hopper and air-introduced machine on valve, the valve and is provided with gate valve drive device.
4. a kind of marine low speed diesel engine vent gas denitration temperature control system according to claim 1, it is characterised in that：It is described anti-
The import and outlet for answering device are disposed as pyramidal structure.
5. a kind of marine low speed diesel engine vent gas denitration temperature control system according to claim 1, it is characterised in that：It is described to add
Heat pipe is electric heating tube, the heating tube outer cladding one layer of heat preservation cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720257270.XU CN206577604U (en) | 2017-03-16 | 2017-03-16 | A kind of marine low speed diesel engine vent gas denitration temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720257270.XU CN206577604U (en) | 2017-03-16 | 2017-03-16 | A kind of marine low speed diesel engine vent gas denitration temperature control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206577604U true CN206577604U (en) | 2017-10-24 |
Family
ID=60113632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720257270.XU Expired - Fee Related CN206577604U (en) | 2017-03-16 | 2017-03-16 | A kind of marine low speed diesel engine vent gas denitration temperature control system |
Country Status (1)
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| CN (1) | CN206577604U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11300025B2 (en) | 2018-11-06 | 2022-04-12 | Cummins Emission Solutions Inc. | Systems and methods for reducing reductant deposit formation in a decomposition reactor of an exhaust gas aftertreatment system for an internal combustion engine |
| CN115711167A (en) * | 2022-10-28 | 2023-02-24 | 重庆交通大学 | Exhaust gas temperature compensation device of ship low-pressure SCR system |
-
2017
- 2017-03-16 CN CN201720257270.XU patent/CN206577604U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11300025B2 (en) | 2018-11-06 | 2022-04-12 | Cummins Emission Solutions Inc. | Systems and methods for reducing reductant deposit formation in a decomposition reactor of an exhaust gas aftertreatment system for an internal combustion engine |
| CN115711167A (en) * | 2022-10-28 | 2023-02-24 | 重庆交通大学 | Exhaust gas temperature compensation device of ship low-pressure SCR system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20210316 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |