CN104358627B - Boat diesel engine NOx and SOx associating emission reduction device and control method - Google Patents
Boat diesel engine NOx and SOx associating emission reduction device and control method Download PDFInfo
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- CN104358627B CN104358627B CN201410612368.3A CN201410612368A CN104358627B CN 104358627 B CN104358627 B CN 104358627B CN 201410612368 A CN201410612368 A CN 201410612368A CN 104358627 B CN104358627 B CN 104358627B
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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
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The present invention is to provide a kind of boat diesel engine NOx and SOx associating emission reduction device and control method.In non-discharged nitrous oxides control zone, it is operated in non-EGR mode, the exhaust gas-driven turbine acting come from exhaust manifold, drive compressor compressed air, enter electromotor by scavenging air box and participate in burning；When boats and ships navigate by water in discharged nitrous oxides control zone, it is operated in EGR mode, portion is drawn from exhaust manifold, by cooling and washing, reduce temperature and remove granule therein and SOx, then through EGR blower fan supercharging, mixing with fresh air, the NOx reducing electromotor generates and discharge capacity, meets the IMO Tier III standard about NOx emission；When sulphur emissions control zone or harbour, it is operated in washing mode, enters air after waste gas scrubbed desulfurizer desulfurization, meet the IMO requirement to marine fuel oil sulfur content；When non-sulphur emissions control zone and non-port area, being operated in non-washing mode, the waste gas of discharge is directly discharged into ambient air.
Description
Technical field
The present invention relates to a kind of marine exhaust pollutant emission and control device, be specifically related to as meeting International Maritime Organization
(IMO) about the Combined Control Unit of boat diesel engine NOx and SOx and the control method of marine exhaust pollutant emission regulation.
Background technology
For reducing vessel operating cost, sea transport boats and ships use high-sulfur heavy oil, NOx and SOx that engine combustion produces is to sea
Ocean air and harbour environment create serious harm.
NOx and SOx in engine of boat and ship waste gas is all discharged and has carried out strict restriction by the developed countries such as IMO and America and Europe.
At present, conventional NOx abatement measure mainly includes Mitigation options and the outer Mitigation options of machine in machine.In machine, Mitigation options is logical
Cross after injection, improvement fuel injection characteristic, reduction intake air temperature, in-cylinder water injection etc. in certain method, such as cylinder, change in cylinder
Burning, in reducing cylinder, NOx generates, the final NOx emission reducing electromotor；After reducing discharging NOx measure, mainly SCR outside machine
Treatment technology, utilizes the NOx in reducing agent reduction Diesel Engine Exhaust Pipe, is allowed to become harmless N2, final minimizing electromotor
NOx emission.Comparatively speaking, in above-mentioned machine, Mitigation options is easier to realize, but emission reduction effect is limited；SCR skill is reduced discharging outside machine
Art, emission reduction effect is good, can meet the NOx emission requirement of IMO, but after-treatment device is bulky, decrease the effective of boats and ships
Space, operation and the maintenance cost of SCR are the highest simultaneously.
As one effective Diesel NOx Mitigation options, waste gas recirculation (EGR) technology by by a part of waste gas from aerofluxus discrimination
Pipe is drawn, through cooling, goes the processes such as particle-removing, enter engine blow-through air case, be reallocated to each cylinder of electromotor and participate in combustion
Burn, owing to the waste gas of recirculation containing a certain amount of CO2And H2O, reduces the specific heat of working medium in engine cylinder, follows simultaneously again
Ring waste gas reduces oxygen concentration in cylinder, reduces engine combustion temperatures, thus the NOx reducing electromotor generates and discharge
Amount；EGR technology is owing to can meet the IMO Tier III discharge standard about NOx, and its volume and cost are all much smaller than SCR
System, is a kind of promising boat diesel engine NOx emission control technology.
Boats and ships SOx emission-reduction technology, mainly includes using Low Sulfur Fuel Oil and flue gas scrubbing technology two kinds.Comparatively speaking, low-sulfur is used
Fuel oil is more convenient, changes less to boats and ships, can meet the IMO requirement to marine fuel oil sulfur content, but high low-sulfur peculiar to vessel fires
Between oil, price difference is huge, use Low Sulfur Fuel Oil cost the highest, simultaneously available engine use Low Sulfur Fuel Oil exist viscosity too low, profit
The problems such as slip is poor, easy abrasion, have certain infringement, and Low Sulfur Fuel Oil can produce substantial amounts of in refining process electromotor
CO2, aggravate Global Greenhouse Effect.
A kind of as IMO accreditation removes the effective ways of SOx in marine exhaust, and flue gas scrubbing technology is by high to using low-quality
The waste gas that sulfur heavy oil produces is carried out, and removes SOx therein, meets the IMO requirement about sulphur content of fuel oil.Waste gas washs
Operating cost is low, but wash mill there is also volume relatively greatly, runs and safeguard the problem needing certain expense.
At present, research and the process to marine exhaust NOx, SOx, is all the most individually to carry out, and i.e. uses two set distinct devices,
Respectively to NOx and SOx process.This waste gas series connection processing method, equipment volume is huge, and back pressure is high, to electromotor just
Often work influence is relatively big, and equipment investment and operating cost are the highest.
Up to now, there is no one both at home and abroad can carry out close-coupled processing device to NOx and SOx of boat diesel engine discharge,
Make on the basis of meeting IMO relevant NOx and SOx emission request, reduction emission control equipment volume and cost, and subtract
Row's equipment is on vessel operating expenditures and the impact of the useful space.
Summary of the invention
It is an object of the invention to provide one and can effectively improve engine firing condition, reduce in-cylinder combustion temperature, reduce bavin
The NOx of oil machine generates and removes the SO in removing exhaust gasX, it is achieved reduce NOx and SOx in engine exhaust simultaneously, meet IMO method
Boat diesel engine NOx and SOx advising the restriction to boat diesel engine NOx and SOx discharge combines emission reduction device.The mesh of the present invention
Also reside in provide a kind of boat diesel engine NOx and SOx associating emission reduction device control method.
Boat diesel engine NOx with the SOx associating emission reduction device of the present invention is included in the exhaust manifold that the exhaustor with diesel engine is connected
And the gas handling system being connected between the scavenging air box connected with the air inlet pipe of oil machine, described gas handling system includes being communicated to exhaust manifold
Turbine, by turbo-driven compressor, the air intercooler that is connected between blower outlet and scavenging air box, with diesel oil
The exhaustor of machine be connected exhaust manifold and diesel engine air inlet pipe be connected scavenging air box between be also connected with egr system, described EGR
System include the pre-scrubber being connected with exhaust manifold by the second unidirectional stop valve, be connected to the cooler for recycled exhaust gas after pre-scrubber,
Being connected to the EGR scrubber after cooler for recycled exhaust gas, be connected to the EGR water droplet catcher behind EGR scrubber, EGR water droplet traps
The outlet connecting fan of device, the outlet of blower fan is connected with scavenging air box by the 3rd unidirectional stop valve, and described gas handling system also includes even
The compressed air bypass comprising the first unidirectional stop valve being connected between blower outlet and exhaust manifold, imports and exports at turbine
Between exhaust gas bypass pipeline is set, exhaust gas bypass pipeline arranges the 4th unidirectional stop valve, exhaust gas bypass pipeline connects waste heat boiler,
Connect exhaust gas scrubber by three-way valve after waste heat boiler or directly connect air.
Boat diesel engine NOx and the SOx associating emission reduction device of the present invention can also include:
1, in atmosphere between air water droplet catcher between cooler and scavenging air box.
2, described pre-scrubber and EGR scrubber use one or more levels spray column structure, or use packed tower structure.
The control method of boat diesel engine NOx and the SOx associating emission reduction device of the present invention is:
Including non-EGR mode and EGR mode；
When boats and ships navigate by water in non-discharged nitrous oxides control zone, electromotor operates in non-EGR mode, close in egr system second,
Three unidirectional stop valves, the waste gas of diesel engine is all passed through turbine by exhaust manifold, and compressed air drops through air intercooler
Temperature, enters water droplet catcher, enters scavenging air box, then by air inlet pipe, enters diesel engine and participate in burning；Compressed air bypass
In first unidirectional stop valve close, when high engine load work, unlatching turbine exhaust bypass in the 4th unidirectional section
Only valve, bypasses unnecessary waste gas；
When boats and ships navigate by water in discharged nitrous oxides control zone, electromotor operates in EGR mode, open second in egr system,
Three unidirectional stop valves, diesel engine major part waste gas is still passed through turbine；Remaining waste gas flows into egr system by the second unidirectional stop valve,
Reduce EGT through waste gas prewashing device and remove partial particulate, then reducing EGT through cooler for recycled exhaust gas, entering EGR and wash
Washing device and remove granule and SOx in waste gas, then eliminated, by water droplet catcher, the water droplet that waste gas carries, waste gas is pressurizeed by EGR blower fan,
Entering scavenging air box and the pressurised fresh air mixing come by intake channel through the 3rd unidirectional stop valve, gaseous mixture passes through air inlet pipe,
Enter electromotor and participate in burning, reduce generation and the discharge capacity of electromotor NOx；Under EGR mode, in turbine exhaust bypass
The 4th unidirectional stop valve close, open the first unidirectional stop valve in compressed air bypass, compressor supplement to turbine
Partial shrinkage air；
Exhaust gas scrubber is divided into non-washing mode and two kinds of operational modes of washing mode, when boats and ships are in non-sulphur emissions control zone and non-
During the navigation of port area, the waste gas of non-recirculated, after waste heat boiler recovers energy, through three-way valve, by exhaust gas bypass path
It is directly discharged into ambient air；When boats and ships navigate by water in sulphur emissions control zone or port area, the waste gas of non-recirculated, through waste heat
After boiler recovers energy, through three-way valve, by waste gas washing desulphurization path inflow exhaust gas wash mill, washing slough wherein SOx and
Granule, after water droplet removed by scrubbed device top demister, enters ambient air；When the maintenance of marine exhaust wash mill or appearance
During fault, waste gas, through three-way valve, is directly discharged into atmospheric environment by exhaust gas bypass path.
For the deficiency of spot ship Exhaust Control for Diesel Engine technology, the present invention proposes a kind of for boat diesel engine NOx and SOx
The method and apparatus of associating removing, it can effectively improve engine firing condition, reduce in-cylinder combustion temperature, reduce diesel engine
NOx generate and remove the SO in removing exhaust gasX, it is achieved reduce NOx and SOx in engine exhaust simultaneously, meet IMO regulation pair
The restriction of boat diesel engine NOx and SOx discharge.The main feature of technical scheme is embodied in:
The boat diesel engine NOx of the present invention and SOx emission control system comprise diesel engine system and are attached to and diesel engine system
EGR device and exhaust gas scrubber.Described EGR device is connected to exhaust manifold and scavenging air box, be provided with unidirectional stop valve,
Waste gas prewashing device, cooler for recycled exhaust gas, EGR scrubber and EGR blower fan.Described exhaust gas scrubber passes through three-way valve and waste heat
Boiler exhaust outlet is connected.
In described diesel engine system, in atmosphere between set up water droplet catcher after cooler.
In described diesel engine system, setting up turbine exhaust bypass, connection turbine is imported and exported.
In described diesel engine system, set up compressed air bypass, connection blower outlet and turbine inlet.
In described diesel engine system, the waste gas of non-recirculated, after waste heat boiler, by three-way valve, or removes waste gas washing dress
Put washing or be directly discharged into air.
In described associating emission reduction device, described waste gas prewashing device, EGR scrubber and exhaust gas scrubber use one-level or many
Level spray column structure, or use packed tower structure.
Boat diesel engine NOx and SOx of the present invention combines being mainly characterized in that: of reduction of discharging control method
The boat diesel engine with EGR device is divided into two kinds of mode of operations, non-EGR mode and EGR mode.
Non-EGR mode: when boats and ships navigate by water in non-discharged nitrous oxides control zone, electromotor operates in non-EGR mode, i.e. cuts out
Unidirectional stop valve in EGR passage, EGR device does not puts into operation；Now the waste gas of diesel engine is all passed through turbine by exhaust manifold,
Acting driving pressure mechanism of qi work, compresses fresh air, and compressed air is lowered the temperature through air intercooler, enters water droplet catcher,
Remove water droplet contained therein, enter scavenging air box, then by air inlet pipe, enter diesel engine and participate in burning；Under non-EGR mode, compression
In air by-pass path unidirectional stop valve close, when high engine load work, unlatching turbine exhaust bypass in unidirectional section
Only valve, bypasses unnecessary waste gas.
EGR mode: when boats and ships navigate by water in discharged nitrous oxides control zone, electromotor operates in EGR mode, i.e. opens EGR and leads to
Unidirectional stop valve in road, EGR device puts into operation；Now diesel engine major part waste gas is still passed through turbine；Remaining waste gas is by single
Flow into EGR passage to stop valve, reduce EGT through waste gas prewashing device and remove partial particulate, then drop through cooler for recycled exhaust gas
Low EGT, enters EGR scrubber and removes granule and SOx in waste gas, then eliminated, by water droplet catcher, the water droplet that waste gas carries,
Waste gas is pressurizeed by EGR blower fan, through unidirectional stop valve, enters scavenging air box, and the pressurised fresh air come by intake channel mixes
Closing, gaseous mixture passes through air inlet pipe, enters electromotor and participates in burning, reduces generation and the discharge capacity of electromotor NOx；EGR mode
Under, in turbine exhaust bypass, unidirectional stop valve is closed, and opens unidirectional stop valve in compressed air bypass, by compressor
Partial shrinkage air is supplemented to turbine.
Under EGR mode, adjusted the exhaust gas flow (i.e. EGR rate) of recirculation by EGR blower fan, it is achieved in working conditions of different engines
Under, engine NOx emission can meet the requirement of IMO Tier III.
In turbine exhaust bypass, unidirectional stop valve is opened under non-EGR mode, is used for bypassing the unnecessary waste gas of diesel engine, improves
Engine efficiency.
In compressed air bypass, unidirectional stop valve is opened under EGR mode, for supplementing Partial shrinkage air to turbine, carries
The output of high turbine.
Whether work by exhaust gas scrubber, boat diesel engine system is divided into two kinds of operational modes, non-washing mode and washing mould
Formula.
Non-washing mode: when boats and ships navigate by water in non-sulphur emissions control zone and non-port area, the waste gas of non-recirculated, through excess enthalpy
After heat boiler recovers energy, through three-way valve, exhaust gas bypass path it is directly discharged into ambient air.
Washing mode: when boats and ships navigate by water in sulphur emissions control zone or port area, the waste gas of non-recirculated, through waste heat boiler
After recovering energy, through three-way valve, by waste gas washing desulphurization path inflow exhaust gas wash mill, wherein SOx and granule are sloughed in washing,
After water droplet removed by scrubbed device top demister, enter ambient air.
When marine exhaust wash mill keeps in repair or breaks down, waste gas, through three-way valve, is directly discharged into air by exhaust gas bypass path
Environment.
Compared with prior art, present invention have an advantage that
1. it is relevant that a kind of boat diesel engine NOx with SOx associating emission-reducing system that the present invention uses meets the IMO that will come into effect
Marine exhaust discharge standard, i.e. all can meet the relevant NOx of IMO and sulphur content of fuel oil in emission control district with non-emission control district
Requirement.
2., compared with SCR associating flue gas scrubbing technology scheme, boat diesel engine NOx and SOx that the present invention uses combines reduction of discharging system
System volume is little, saves the boats and ships useful space, and cost of investment and operating cost are low, little on electromotor impact.
3. before EGR gas enters engine chamber, scrubbed device, demister, remove the SO in waste gasXWith major part
Grain, makes waste gas be purified, and decreases the granule content entering cylinder of diesel engine, it is to avoid the abrasion of electromotor, the most notable
Improve burning condition, by adjusting engine parameter, diesel powered, economic performance and discharge performance can be made all to be improved.
4. after EGR gas is scrubbed, temperature is minimized, and adds the air inflow of electromotor, it is ensured that engine power.
5. containing CO in recirculation low temperature waste gas2And steam, enter after electromotor, add the CO in working medium in cylinder2And water steams
Gas content, decreases oxygen concentration in cylinder, improves the specific heat of working medium in cylinder, reduces ignition temperature, and then reduce NOXLife
Cheng Liang.
6., owing to using set of device to remove NOx and SOx in engine exhaust simultaneously, the volume and weight of apparatus of the present invention is wanted
Being significantly less than the volume and weight sum of the device carrying out desulfurization and denitration respectively, operation and maintenance cost is much smaller.
Accompanying drawing explanation
Fig. 1 is that boat diesel engine NOx and SOx of the present invention combines emission-reducing system schematic diagram.
Detailed description of the invention
Below in conjunction with Fig. 1, the present invention is described in detail.
Marine exhaust NOx and the SOx associating emission-reducing system of the present invention is suitable for Ship Power Equipment, and these power set have: bavin
Oil machine 1, the exhaust manifold 3 being connected on diesel engine 1 by exhaustor 2, the air intercooler being arranged on intake channel
15 and water droplet catcher 16, it is communicated to the turbine 12 of exhaust manifold 3, and the compressor 13 being arranged on intake channel；Enter
The outlet of gas communication compressor 13 and scavenging air box 17, comprise air intercooler 15 and water droplet catcher 16；Containing unidirectional
The turbine exhaust bypass of stop valve 11 is directly connected to turbine 12 entrance and waste heat boiler 19 entrance；Comprise unidirectional stop valve
The compressed air bypass of 14 is directly connected to compressor 13 outlet and turbine 12 entrance；The waste gas controlled by three-way valve 20 is washed
Wash desulfurization path and exhaust gas bypass path.
EGR device includes: connection the exhaust manifold 3 and EGR passage of scavenging air box 17, be arranged in EGR passage for controlling
The unidirectional stop valve 4 that EGR opens and waste gas flows to；It is arranged in EGR passage, useless for preliminary cooling waste gas prewashing granule
Gas prewashing device 5；It is arranged in EGR passage, after waste gas prewashing device 5, for cooling down the cooler for recycled exhaust gas 6 of EGR exhaust；
After cooler for recycled exhaust gas 6, for washing the scrubber 7 of granule and SOx in EGR exhaust；Behind scrubber 7, it is used for trapping
The water droplet catcher 8 of water droplet in EGR exhaust after washing；It is arranged in EGR passage, for the EGR wind to EGR exhaust supercharging
Machine 9；It is arranged in EGR passage, for controlling EGR passage opening and closing and the unidirectional stop valve 10 of the waste gas flow direction.
The egr system of the present invention divides two kinds of mode of operations, non-EGR mode and EGR mode.
Non-EGR mode: when boats and ships run in non-discharged nitrous oxides control zone, electromotor operates in non-EGR mode, i.e. EGR
In path, unidirectional stop valve 4 and 10 is closed, and EGR device does not puts into operation；Now the waste gas of diesel engine 1 passes through exhaust manifold 3
All it is passed through turbine 12, expansion work in turbine 12, driving pressure mechanism of qi 13 works, and compressor 13 compresses fresh air,
Compressed air is lowered the temperature through air intercooler 15, enters water droplet catcher 16, removes water droplet contained therein, enters scavenging
Case 17, then by air inlet pipe 18, enter diesel engine 1, participate in burning；Under non-EGR mode, single in compressed air bypass
Closing to stop valve 14, when high engine load works, diesel exhaust amount is superfluous, opens in turbine exhaust bypass single
To stop valve 11, bypass unnecessary waste gas, improve engine efficiency.
EGR mode: when boats and ships run in discharged nitrous oxides control zone, electromotor operates in EGR mode, i.e. in EGR passage
Unidirectional stop valve 4 and 10 is opened, and EGR device puts into operation；Now diesel engine 1 major part waste gas is still passed through turbine 12；Remaining
Waste gas flows into EGR passage by unidirectional stop valve 4, through waste gas prewashing device 5, reduces EGT and removes partial particulate,
Through cooler for recycled exhaust gas 6, reduce EGT, enter EGR scrubber 7, remove granule and SOx in waste gas, then trapped by water droplet
Device 8, is eliminated the water droplet that carries of waste gas, is pressurizeed by EGR blower fan 9, through unidirectional stop valve 10, enters scavenging air box 17, and by
The pressurised fresh air mixing that intake channel B comes, gaseous mixture passes through air inlet pipe 18, enters boats and ships two stroke diesel engine 1 and participates in
Burning, reduces generation and the discharge capacity of electromotor NOx；Under EGR mode, owing to EGR passage is opened, shunt portion,
The exhaust gas flow flowing through turbine 12 is not enough, now closes unidirectional stop valve 11 in turbine exhaust bypass, opens pressure simultaneously
Unidirectional stop valve 14 in contracting air by-pass path, is supplemented Partial shrinkage air by compressor 13 to turbine 12, improves turbine 12
Output.Under EGR mode, adjusted the exhaust gas flow (i.e. EGR rate) of recirculation by the EGR blower fan 9 in EGR passage,
Realizing under working conditions of different engines, engine NOx emission can meet the requirement of IMO Tier III.
In turbine exhaust bypass, unidirectional stop valve 11 is opened under non-EGR mode, closes, air-flow side under non-EGR mode
To from exhaust manifold 3 to waste heat boiler 19.
In compressed air bypass, unidirectional stop valve 14 is closed under non-EGR mode, opens, airflow direction under EGR mode
Turbine 12 entrance is exported to from compressor 13.
In EGR passage, unidirectional stop valve 4 and 10 is closed under non-EGR mode, opens under EGR mode, and airflow direction is respectively
For flowing to waste gas prewashing device 5 from exhaust manifold 3 and flowing to scavenging air box 17 from EGR blower fan 9.
Whether putting into operation by exhaust gas scrubber 21, boat diesel engine system, non-washing mode and washing if being divided into two kinds of operational modes
Wash pattern.
Non-washing mode: when boats and ships navigate by water in non-sulphur emissions control zone and non-port area, the waste gas of non-recirculated, through excess enthalpy
After heat boiler 19 recovers energy, through three-way valve 20, exhaust gas bypass path it is directly discharged into ambient air.
Washing mode: when boats and ships navigate by water in sulphur emissions control zone or port area, the waste gas of non-recirculated, through waste heat boiler
After 19 recover energy, through three-way valve 20, by waste gas washing desulphurization path inflow exhaust gas wash mill 21, wherein SOx is sloughed in washing
And granule, after water droplet removed by scrubbed device top demister, enter ambient air.
When marine exhaust wash mill keeps in repair or breaks down, waste gas, through three-way valve 20, is directly discharged into greatly by exhaust gas bypass path
Compression ring border.
Claims (4)
- null1. boat diesel engine NOx and SOx combines emission reduction device，It is included between exhaust manifold and the scavenging air box being connected with the air inlet pipe of diesel engine that the exhaustor with diesel engine is connected the gas handling system being connected，Described gas handling system includes the turbine being communicated to exhaust manifold、By turbo-driven compressor、The air intercooler being connected between blower outlet and scavenging air box，It is characterized in that: between the scavenging air box that the air inlet pipe of the exhaust manifold being connected with the exhaustor of diesel engine and diesel engine is connected, be also connected with egr system，Described egr system includes the waste gas prewashing device being connected by the second unidirectional stop valve with exhaust manifold、It is connected to the cooler for recycled exhaust gas after waste gas prewashing device、It is connected to the EGR scrubber after cooler for recycled exhaust gas、It is connected to the EGR water droplet catcher behind EGR scrubber，The outlet connecting fan of EGR water droplet catcher，The outlet of blower fan is connected with scavenging air box by the 3rd unidirectional stop valve，Described gas handling system also includes the compressed air bypass comprising the first unidirectional stop valve being connected between blower outlet and exhaust manifold，Between turbine is imported and exported, exhaust gas bypass pipeline is set，4th unidirectional stop valve is set on exhaust gas bypass pipeline，Exhaust gas bypass pipeline connects waste heat boiler，Connect exhaust gas scrubber by three-way valve after waste heat boiler or directly connect air.
- Boat diesel engine NOx and SOx the most according to claim 1 combines emission reduction device, it is characterized in that: arrange air water droplet catcher between in atmosphere between cooler and scavenging air box.
- Boat diesel engine NOx and SOx the most according to claim 1 and 2 combines emission reduction device, it is characterized in that: described waste gas prewashing device and EGR scrubber use one or more levels spray column structure, or use packed tower structure.
- 4. a control method for boat diesel engine NOx and the SOx associating emission reduction device described in claim 1, is characterized in that:Including non-EGR mode and EGR mode；When boats and ships navigate by water in non-discharged nitrous oxides control zone, electromotor operates in non-EGR mode, close second and third unidirectional stop valve in egr system, the waste gas of diesel engine is all passed through turbine by exhaust manifold, compressed air is lowered the temperature through air intercooler, enters water droplet catcher, enters scavenging air box, again by air inlet pipe, enter diesel engine and participate in burning；The first unidirectional stop valve in compressed air bypass is closed, and when high engine load works, opens the 4th unidirectional stop valve in turbine exhaust bypass, bypasses unnecessary waste gas；When boats and ships navigate by water in discharged nitrous oxides control zone, electromotor operates in EGR mode, opens second and third unidirectional stop valve in egr system, and diesel engine major part waste gas is still passed through turbine；Remaining waste gas flows into egr system by the second unidirectional stop valve, reduce EGT through waste gas prewashing device and remove partial particulate, EGT is reduced again through cooler for recycled exhaust gas, enter EGR scrubber and remove granule and SOx in waste gas, the water droplet that waste gas carries is eliminated again by water droplet catcher, waste gas is pressurizeed by EGR blower fan, scavenging air box and the pressurised fresh air mixing come by intake channel is entered through the 3rd unidirectional stop valve, gaseous mixture passes through air inlet pipe, enter electromotor and participate in burning, reduce generation and the discharge capacity of electromotor NOx；Under EGR mode, the 4th unidirectional stop valve in turbine exhaust bypass is closed, and opens the first unidirectional stop valve in compressed air bypass, compressor supplements Partial shrinkage air to turbine；Exhaust gas scrubber is divided into non-washing mode and two kinds of operational modes of washing mode, when boats and ships navigate by water in non-sulphur emissions control zone and non-port area, the waste gas of non-recirculated, after waste heat boiler recovers energy, through three-way valve, exhaust gas bypass path it is directly discharged into ambient air；When boats and ships navigate by water in sulphur emissions control zone or port area, the waste gas of non-recirculated, after waste heat boiler recovers energy, through three-way valve, by waste gas washing desulphurization path inflow exhaust gas wash mill, wherein SOx and granule are sloughed in washing, after water droplet removed by exhaust gas scrubber top demister, enter ambient air；When exhaust gas scrubber keeps in repair or breaks down, waste gas, through three-way valve, is directly discharged into atmospheric environment by exhaust gas bypass path.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202170824U (en) * | 2011-07-19 | 2012-03-21 | 上海外高桥造船海洋工程设计有限公司 | Marine diesel engine waste gas thermal circulation device |
| EP2711067A1 (en) * | 2012-09-25 | 2014-03-26 | Alfa Laval Corporate AB | Combined cleaning system and method for reduction of SOx and NOx in exhaust gases from a combustion engine |
| CN203655418U (en) * | 2013-09-23 | 2014-06-18 | 中国船舶重工集团公司第七一一研究所 | EGR (exhaust gas recirculation) system for marine medium-speed diesel engine |
| CN203702289U (en) * | 2014-02-20 | 2014-07-09 | 杭州双鸟柴油机有限公司 | Marine diesel engine with exhaust gas filter |
| CN204253221U (en) * | 2014-11-04 | 2015-04-08 | 哈尔滨工程大学 | Boat diesel engine NOx and SOx combines emission reduction device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5357720B2 (en) * | 2009-11-27 | 2013-12-04 | 三菱重工業株式会社 | Ships equipped with exhaust gas treatment equipment |
-
2014
- 2014-11-04 CN CN201410612368.3A patent/CN104358627B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202170824U (en) * | 2011-07-19 | 2012-03-21 | 上海外高桥造船海洋工程设计有限公司 | Marine diesel engine waste gas thermal circulation device |
| EP2711067A1 (en) * | 2012-09-25 | 2014-03-26 | Alfa Laval Corporate AB | Combined cleaning system and method for reduction of SOx and NOx in exhaust gases from a combustion engine |
| CN203655418U (en) * | 2013-09-23 | 2014-06-18 | 中国船舶重工集团公司第七一一研究所 | EGR (exhaust gas recirculation) system for marine medium-speed diesel engine |
| CN203702289U (en) * | 2014-02-20 | 2014-07-09 | 杭州双鸟柴油机有限公司 | Marine diesel engine with exhaust gas filter |
| CN204253221U (en) * | 2014-11-04 | 2015-04-08 | 哈尔滨工程大学 | Boat diesel engine NOx and SOx combines emission reduction device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12031676B2 (en) | 2020-03-24 | 2024-07-09 | Marathon Petroleum Company Lp | Insulation securement system and associated methods |
| CN114000961A (en) * | 2021-10-27 | 2022-02-01 | 中船动力研究院有限公司 | Exhaust gas recirculation system |
| US12031094B2 (en) | 2023-06-22 | 2024-07-09 | Marathon Petroleum Company Lp | Assemblies and methods for enhancing fluid catalytic cracking (FCC) processes during the FCC process using spectroscopic analyzers |
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