CN205700083U - A kind of boat diesel engine tail gas desulfurization denitration combined apparatus - Google Patents
A kind of boat diesel engine tail gas desulfurization denitration combined apparatus Download PDFInfo
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- CN205700083U CN205700083U CN201620407268.1U CN201620407268U CN205700083U CN 205700083 U CN205700083 U CN 205700083U CN 201620407268 U CN201620407268 U CN 201620407268U CN 205700083 U CN205700083 U CN 205700083U
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- diesel engine
- turbine
- heat boiler
- tail gas
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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
- Y02T70/00—Maritime or waterways transport
- Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
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- Exhaust Gas After Treatment (AREA)
Abstract
nullThe purpose of this utility model is to provide a kind of boat diesel engine tail gas desulfurization denitration combined apparatus，Including diesel engine、Turbocharger、Waste heat boiler、Tail gas washing tower，Diesel engine connects exhaust manifold and scavenging air box respectively，Exhaust manifold connects turbine inlet by turbine inlet pipeline，Turbine outlet connects the import of waste heat boiler by turbine outlet pipeline，Turbine outlet pipeline is communicated by exhaust gas bypass path with turbine inlet pipeline，Blower outlet connects scavenging air box by blower outlet pipeline，Blower outlet pipeline is communicated by compressed air bypass with exhaust manifold，The outlet of waste heat boiler connects heat boiler outlet pipeline，Heat boiler outlet pipeline and waste gas washing desulphurization path、Discharge pipe is connected by threeway mode，Waste gas washing desulphurization path connects the import of tail gas washing tower，The outlet of tail gas washing tower connects air after connecting with discharge pipe.This utility model disclosure satisfy that boat diesel engine NOX and SOX is arranged requirement by IMO regulation.
Description
Technical field
The utility model relates to a kind of diesel engine exhaust gas treatment device, specifically marine diesel tail
Flash Gas Compression Skid System.
Background technology
Along with developing rapidly of boats and ships shipping business, marine exhaust discharge capacity is increasing, the harm day to environment
Benefit is serious.According to the data of Surveillance center of national environmental protection portion, the boats and ships in Chinese Port alongside in 2013
Discharge sulfur dioxide 58.8 ten thousand tons altogether, accounts for the 8.4% of whole nation total emission volumn；Yard craft nitrogen oxides is arranged
High-volume 27.8 ten thousand tons, account for the 11.3% of whole nation total emission volumn.International Maritime Organization IMO has formulated a series of
Anti-pollution convention, has carried out strict restriction to harmful components discharge in marine exhaust.On January 1st, 2016 rises
Boats and ships emission request in emission control district reaches Tier III discharge standard.
Boat diesel engine emission-reduction technology, mainly includes using Low Sulfur Fuel Oil and flue gas scrubbing technology two kinds.Relatively and
Speech, uses Low Sulfur Fuel Oil more convenient, changes less to boats and ships, can meet IMO to marine fuel oil sulfur content
Requirement, but between high Low Sulfur Fuel Oil peculiar to vessel, price difference is huge, uses Low Sulfur Fuel Oil cost the highest, the most existing
Motivation uses Low Sulfur Fuel Oil to there is the problems such as viscosity is too low, poor lubricity, easy abrasion, has electromotor necessarily
Infringement, and Low Sulfur Fuel Oil can produce substantial amounts of CO2 in refining process, aggravates Global Greenhouse Effect.
NO mainly with selective catalytic reduction (SCR), is reduced to N2 with NH3 by the removing of NOX.Due to
Gas temperature after desulfurization is relatively low, and SCR reaction needs higher temperature, need to gas post bake could be taken off
Nitre.
As a kind of effective ways removing marine exhaust desulfurization (FGD) of IMO accreditation, flue gas scrubbing technology leads to
Cross the waste gas to using the generation of low-quality high-sulfur heavy oil to be carried out, remove SOX therein, meet the relevant combustion of IMO
The requirement of oil sulfur content.Wet FGD has a highest desulfuration efficiency, but is difficult to denitration simultaneously, this be because of
It is all NO, NO in addition to generating complex in the NOX in boat diesel engine actual exhaust gas more than 90%,
Hardly by water or alkali liquor absorption.
At present, research and the process to marine exhaust NOX and SOX, is all the most individually to carry out, and i.e. uses two sets
Distinct device, respectively to NOX and SOX process.This waste gas series connection processing method, equipment volume is huge,
Back pressure is high, and relatively big on engine work impact, equipment investment and operating cost are the highest.
Summary of the invention
The purpose of this utility model is that offer disclosure satisfy that boat diesel engine NOX and SOX is arranged by IMO regulation
A kind of boat diesel engine tail gas desulfurization denitration combined apparatus required.
The purpose of this utility model is achieved in that
This utility model one boat diesel engine tail gas desulfurization denitration combined apparatus, is characterized in that: include
Diesel engine, turbocharger, waste heat boiler, tail gas washing tower, turbocharger includes turbine and compressor,
Diesel engine connects exhaust manifold and scavenging air box respectively, and exhaust manifold connects turbine inlet by turbine inlet pipeline,
Turbine outlet connects the import of waste heat boiler, turbine outlet pipeline and turbine inlet pipe by turbine outlet pipeline
Road is communicated by exhaust gas bypass path, and exhaust gas bypass path is installed the first unidirectional stop valve, blower outlet
Connect scavenging air box by blower outlet pipeline, blower outlet pipeline installed air cooler, water droplet catcher,
Blower outlet pipeline is communicated by compressed air bypass with exhaust manifold, on compressed air bypass
Installing the second unidirectional stop valve, the outlet of waste heat boiler connects heat boiler outlet pipeline, heat boiler outlet
Pipeline is connected by threeway mode with waste gas washing desulphurization path, discharge pipe, and waste gas washing desulphurization path is even
Connecing the import of tail gas washing tower, the outlet of tail gas washing tower connects air after connecting with discharge pipe, and waste gas is washed
Washing installation catalytic oxidizing equipment on desulfurization path, catalytic oxidizing equipment connects ozonator, tail gas washing tower
Connect unit for treating water.
Advantage of the present utility model is:
1, a kind of boat diesel engine tail gas desulfurization denitration joint processing system that this utility model uses meets IMO
Relevant marine exhaust discharge standard.
2, this utility model uses catalytic ozonation method, is converted into easily quilt by being difficult to by the NO of alkali liquor absorption
The NO2 of alkali liquor absorption, is greatly improved the alkali liquor washing denitration efficiency to NOX.
3, owing to using set of device to remove NOX and SOX in engine exhaust simultaneously, this utility model fills
The volume and weight put to be significantly less than the volume and weight sum of the device carrying out desulfurization and denitration respectively, if
Standby compact, the boats and ships useful space, cost of investment and operating cost can be saved low, little on electromotor impact.
4, use exhaust gas bypass technology, ensure that the safety that waste gas washing desulphurization denitrification apparatus runs.
5, while to boat diesel engine tail gas desulfurization denitration Combined Treatment, it is also possible to reduce the row of particulate matter
Put.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Illustrate below in conjunction with the accompanying drawings and this utility model be described in more detail:
In conjunction with Fig. 1, boat diesel engine tail gas desulfurization denitration joint processing system of the present utility model is suitable for ship
Oceangoing ship power set, these power set have diesel engine 1, the aerofluxus discrimination being connected on diesel engine by exhaustor 2
Pipe 3, the air intercooler 6 being arranged on intake channel and water droplet catcher 7, it is communicated to exhaust manifold
Turbine 10, and the compressor 4 being arranged on intake channel；Intake channel connection compressor 4 exports and scavenging
Case 8, comprises air intercooler 6 and water droplet catcher 7；By turbine exhaust containing unidirectional stop valve 11
Road is directly connected to turbine inlet 10 and waste heat boiler 12 entrance all；The compression comprising unidirectional stop valve 5 is empty
Gas bypass is directly connected to compressor 4 outlet and turbine 10 entrance；The waste gas controlled by three-way valve 13 is washed
Wash desulfurization path and exhaust gas bypass path.
When boats and ships run in emission control district, the waste gas of diesel engine is all passed through turbine by exhaust manifold 3,
Expansion work in turbine 10, driving pressure mechanism of qi 4 works, and compressor 4 compresses fresh air, and compressed air is passed through
Air intercooler 6 is lowered the temperature, and enters water droplet catcher 7, removes water droplet contained therein, enters scavenging air box 8,
Again by air inlet pipe 9, enter diesel engine 1, participate in burning；When electromotor middle-low load works, compressed air
In bypass, unidirectional stop valve 11 is closed, and when high engine load works, diesel exhaust amount is superfluous, opens
Open unidirectional stop valve 11 in turbine exhaust bypass, bypass unnecessary waste gas, improve engine efficiency.
Whether put into operation by exhaust gas scrubber 16, boat diesel engine system is divided into two kinds of operational modes, non-
Washing mode and washing mode.
Non-washing mode: when boats and ships navigate by water in non-emission control district and non-port area, waste gas is through waste heat pot
After stove 12 recovers energy, through three-way valve 13, 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, waste gas is through waste heat boiler 12
After recovering energy, through three-way valve 13, waste gas washing desulphurization path flow into catalytic oxidizing equipment 15, send out with ozone
The ozone generation oxidation reaction that raw device 14 produces；Waste gas after oxidation enters exhaust gas scrubber 16, uses alkali liquor
NOX therein, SOX and granule are sloughed in washing, after water droplet removed by scrubbed device top demister, enter environment
Air, the waste water after washing enters unit for treating water 17 and processes.
When marine exhaust wash mill keeps in repair or breaks down, waste gas is through three-way valve 13, by exhaust gas bypass path
It is directly discharged into atmospheric environment.
This utility model device is included in exhaust manifold that the exhaustor with diesel engine is connected and the air inlet with oil machine
The gas handling system connected between the scavenging air box that pipe is connected, described gas handling system includes the whirlpool being communicated to exhaust manifold
Wheel, by turbo-driven compressor, the air intercooler that is connected between blower outlet and scavenging air box.
Described gas handling system also includes that be connected between blower outlet and exhaust manifold comprises the first unidirectional stop valve
Compressed air bypass, turbine import and export between exhaust gas bypass pipeline is set, exhaust gas bypass pipeline sets
Putting the 4th unidirectional stop valve, exhaust gas bypass pipeline connects waste heat boiler, is connected useless after waste heat boiler by three-way valve
Gas washing device or directly connect air.Arrange air water droplet between in atmosphere between cooler and scavenging air box to catch
Storage.Ozone generating-device and catalytic oxidizer is had before exhaust scrubber.Scrubber uses one or more levels
Spray column structure, or use packed tower structure.Boat diesel engine NOX of the present utility model and SOX emission control
Device comprises diesel engine system and ozone-oxidizing device and exhaust gas scrubber.In described diesel engine system,
Water droplet catcher is set up after cooler between in atmosphere.In described diesel engine system, set up turbine exhaust bypass
Path, connection turbine is imported and exported.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 goes to give up
Gas washing device washs or is directly discharged into air.
In described associating emission reduction device, described waste gas prewashing device, scrubber and exhaust gas scrubber use one
Level or multi-stage spray tower structure, or use packed tower structure.
Being mainly characterized in that: of boat diesel engine tail gas desulfurization denitration combination treatment method of the present utility model
When boats and ships navigate by water in discharged nitrous oxides control zone, the waste gas of diesel engine is all passed through by exhaust manifold
Turbine, acting driving pressure mechanism of qi work, compress fresh air, compressed air is lowered the temperature through air intercooler,
Enter water droplet catcher, remove water droplet contained therein, enter scavenging air box, then by air inlet pipe, enter diesel engine and participate in
Burning；In compressed air bypass, unidirectional stop valve is closed, and when high engine load works, opens turbine
Unidirectional stop valve in exhaust gas bypass path, bypasses unnecessary waste gas.
Waste gas, after waste heat boiler recovers energy, is flowed into catalysis oxygen through three-way valve by waste gas washing desulphurization path
Gasifying device, the ozone generation catalytic oxidation produced with ozonator；Waste gas after oxidation enters waste gas
Wash mill, sloughs NOX therein, SOX and granule with alkali liquid washing, and scrubbed device top demister is removed
After water droplet, entering ambient air, the waste water after washing enters unit for treating water and processes.
In main harmful gas composition in marine diesel tail gas, NO and SO2 accounts for main body, so this practicality is new
Type mainly processes SO2 and NO in flue gas.Sodium alkali washing is the highest to the removal efficiency of SOX, but to NO
Removal effect is undesirable；By catalytic ozonation method, NO is converted into easily by the NO2 of alkali liquor absorption, with
Shi Shixian combined desulfurization and denitration.
Chemical reaction process of the present utility model is as follows:
1, FGD-Flue gas desulphurization process
O3+SO2→SO3+O2
2NaOH+SO3→Na2SO4+H2O
SO3+H2O→H2SO4
2NaOH+H2SO4→Na2SO4+2H2O
2, tail gas denitrification process
O3+NO→NO2+O2
O3+NO2→NO3+O2
NO3+NO2→2N2O5
N2O5+H2O→2HNO3
2NaOH+2NO2→NaNO3+NaNO2+H2O
NaOH+HNO3→NaNO3+H2O
The utility model discloses the device of a kind of boat diesel engine tail gas desulfurization denitration Combined Treatment.Boats and ships bavin
The flue gas that oil machine is discharged when using heavy oil, is mainly composed of SOX and NOX etc..In emission control district
Waste gas, after waste heat boiler recovers energy, is flowed into catalysis oxidation dress through three-way valve by waste gas washing desulphurization path
Put, the ozone generation catalytic oxidation produced with ozonator；Waste gas after oxidation enters waste gas washing
Device, sloughs NOX therein, SOX and granule with alkali liquid washing, and water droplet removed by scrubbed device top demister
After, entering ambient air, the waste water after washing enters unit for treating water and processes.This utility model uses desulfurization to take off
Nitre joint processing system, saves equipment investment, reduces floor space.Improving boat diesel engine energy
SOX and NOX in efficient removal tail gas while utilization rate, meets the standard of IMO Abgasgesetz.
Claims (1)
1. a boat diesel engine tail gas desulfurization denitration combined apparatus, is characterized in that: include diesel engine,
Turbocharger, waste heat boiler, tail gas washing tower, turbocharger includes turbine and compressor, diesel engine
Connecting exhaust manifold and scavenging air box respectively, exhaust manifold connects turbine inlet, turbine by turbine inlet pipeline
Exporting the import being connected waste heat boiler by turbine outlet pipeline, turbine outlet pipeline leads to turbine inlet pipeline
Crossing exhaust gas bypass path to communicate, exhaust gas bypass path is installed the first unidirectional stop valve, blower outlet passes through
Blower outlet pipeline connects scavenging air box, and blower outlet pipeline is installed air cooler, water droplet catcher, pressure
Mechanism of qi export pipeline is communicated by compressed air bypass with exhaust manifold, and compressed air bypass is pacified
Filling the second unidirectional stop valve, the outlet of waste heat boiler connects heat boiler outlet pipeline, heat boiler outlet pipe
Road is connected by threeway mode with waste gas washing desulphurization path, discharge pipe, and waste gas washing desulphurization path connects
The import of tail gas washing tower, the outlet of tail gas washing tower connects air after connecting with discharge pipe, and waste gas washs
Installing catalytic oxidizing equipment on desulfurization path, catalytic oxidizing equipment connects ozonator, and tail gas washing tower is even
Water receiving processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407268.1U CN205700083U (en) | 2016-05-06 | 2016-05-06 | A kind of boat diesel engine tail gas desulfurization denitration combined apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407268.1U CN205700083U (en) | 2016-05-06 | 2016-05-06 | A kind of boat diesel engine tail gas desulfurization denitration combined apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205700083U true CN205700083U (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620407268.1U Expired - Fee Related CN205700083U (en) | 2016-05-06 | 2016-05-06 | A kind of boat diesel engine tail gas desulfurization denitration combined apparatus |
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| CN (1) | CN205700083U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105797553A (en) * | 2016-05-06 | 2016-07-27 | 哈尔滨工程大学 | Desulfurization and denitration combined treatment device of tail gas of marine diesel engine |
-
2016
- 2016-05-06 CN CN201620407268.1U patent/CN205700083U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105797553A (en) * | 2016-05-06 | 2016-07-27 | 哈尔滨工程大学 | Desulfurization and denitration combined treatment device of tail gas of marine diesel engine |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |