CN208057197U - Marine diesel exhaust gas recirculation device - Google Patents
Marine diesel exhaust gas recirculation device Download PDFInfo
- Publication number
- CN208057197U CN208057197U CN201721900547.2U CN201721900547U CN208057197U CN 208057197 U CN208057197 U CN 208057197U CN 201721900547 U CN201721900547 U CN 201721900547U CN 208057197 U CN208057197 U CN 208057197U
- Authority
- CN
- China
- Prior art keywords
- exhaust gas
- dynamic wave
- cleaning solution
- washing
- reverse jet
- 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
Abstract
A kind of marine diesel exhaust gas recycling wash mill, including dynamic wave scrubber, the characteristics of using the washer high-efficient washing and the high coefficient of heat transfer, remove particulate matter, the sulfur dioxide in exhaust gas, and a degree of cooling is carried out to exhaust gas, the exhaust gas after washing enters scavenging collector by the further cooling of air cooler, the water removal of drip separator, the supercharging of air blower and enters back into combustion chamber participation burning.The utility model can realize the high-efficient washing of cycle gas, be greatly simplified relative to existing EGR washing facilitys structure, reduce the initial input and operating cost of EGR.And the subsequent upgrade of EGR device is improved, prodigious potentiality are provided.
Description
Technical field
The utility model is related to marine diesel, especially a kind of marine diesel exhaust gas recirculation device.
Background technology
The increasingly strict emission regulation of global shipbuilding industry is put into effect successively, International Maritime Organization by Tire II standards
It comes into force at the beginning of 2011, Tier III standards have also been implemented in 2016, it means that real at emission control region (ECA)
Existing level of NOx emission is greatly reduced and (reduces by 80% on the basis of Tier II).Low-speed diesel engine realizes that Tier III discharges are main
There are two technology paths：
One is being recycled using exhaust gas reduces NOx emission in means machines such as (EGR)；
The second is using NOx emission is reduced outside catalysis reduction post-processing technology (SCR) machine.EGR technology route and SCR technology
Route is compared, and is had the characteristics that system is relatively easy, reduces NOx efficiency and is not depended on exhaust row temperature and be taken seriously.
Marine diesel is certain Used in Diesel Engines heavy oil, especially low speed diesel oil using the maximum technical difficulty of EGR
Machine contains a large amount of SOx and particulate matter in exhaust gas, needs washing, purifying.SO in cycle gas2It all can be to cylinder with particulate matter
Etc. the corrosion and abrasion of the component being exposed in EGR exhaust, to influence reliability and the service life of engine.Therefore EGR washings
Requirement higher of the device to washing effect, does not require SO singly2Removal efficiency is greater than 90%, and the removal efficiency of particulate matter is also greater than
70%, and general exhaust scrubber is only to SO2Removal efficiency requires.The newest EGR of German MAN diesel engines company research and development
Device, desulfuration efficiency is 95% or more, and efficiency of dust collection is 90% or more.
Spray column and packed tower are mostly used greatly to the removing of sulfide in Diesel Engine Technique Field, it is big to the removal of particulate matter
Mostly use Venturi scrubber.Compared with these technologies, dynamic wave scrubbing technology has exhaust gas of the lot of advantages more suitable for EGR
Washing.
Utility model content
The utility model provides a kind of marine diesel exhaust gas recirculation device, which can realize the efficient of cycle gas
Washing, greatly simplifies relative to existing EGR washing facilitys structure, reduces the initial input and operating cost of EGR.
The technical solution of the utility model is as follows：
A kind of marine diesel exhaust gas recycling wash mill, feature are to include dynamic wave scrubber, the dynamic wave
Washer includes more reverse jet tubes being distributed between the two plates and the centre for being fixed on a washing tube, every reverse jet tube all fill
There are one the dynamic wave nozzle of opening upwards, an input of the cleaning solution conveying supervisor through more branch pipes Yu each dynamic wave nozzle
End is connected；It is connected from the exhaust header of diesel engine with the upper end exhaust gas input ports of the washing tube through Taper Pipe, this is washed
It is cleaning solution baffle-box to wash below the dynamic wave scrubber (3) of bucket, the outlet of the lower end of the cleaning solution baffle-box through pipeline with wash
The input terminal for washing the water treatment system of liquid is connected, and the output end of the water treatment system of the cleaning solution is recycled by the washed liquid of pipeline
It pumps and is communicated with the cleaning solution of dynamic wave scrubber conveying supervisor, one side of the cleaning solution baffle-box is successively through air-cooled
Device, gas-liquid separator, air blower are communicated with scavenging collector.
Level-one or two-stage nozzle are set in the reverse jet tube of the dynamic wave scrubber；Also two dynamic wave scrubbers can be used
It is connected in series and is divided to two sections of absorptions.
The injection flow velocity of the detergent of the dynamic wave scrubber is controlled by the detergent circulator, by diesel engine
The feed rate of exhaust gas determines.
The diameter of each reverse jet tube is between 80mm~300mm, and the height and diameter of bore ratio of reverse jet tube are 4:1~
12:Between 1.
Multiple reverse jet tubes of diesel exhaust, exhaust gas flow from above to below, and cleaning solution passes through piping by detergent circulator
Multiple reverse jet tubes are sent into, are inversely sprayed with off-gas flows direction from dynamic wave nozzle is bottom-up, air-liquid reverse-impact forms bubble
Foam area, the washed liquid of exhaust gas absorb SO in exhaust gas2, exhaust gas and dust and after cooling by the outlet of the reverse jet tube of dynamic wave scrubber
Discharge, the exhaust gas after washing are cooled again feeding gas-liquid separator by air cooler, and exhaust gas is sent into scavenging collection by air blower
It manages, the moisture detached in cleaning solution and gas-liquid separator is fallen into the cleaning solution baffle-box below air cooler shell, and described washes
The water treatment system processing that the cleaning solution in liquid baffle-box enters cleaning solution is washed, detergent is via circulating pump and cleaning solution after processing
Multiple reverse jet tubes that conveying supervisor is sent into the dynamic wave scrubber through more branch pipes recycle.
Exhaust gas in exhaust pipe is introduced into a kind of special dynamic wave scrubber, flow direction and the dynamic wave nozzle of exhaust gas spray
The direction of detergent is on the contrary, detergent enters dynamic wave nozzle by conveying piping, and the detergent and exhaust gas of injection are in some position
It sets and reaches the froth zone that momentum balance forms a turbulence, in the area, gas-liquid two-phase is contacted in high velocity turbulent flow, contact surface
Product is big, and these contact surfaces are constantly updated rapidly, and efficient washing effect is reached, and dynamic wave scrubber is also in addition
Exhaust gas can efficiently be cooled down.
Each reverse jet tube is cylindrical tube, and material is that fire resistant anticorrosive tears material open.
The material for conveying piping is resistant material.
Waste gas flow direction is by dynamic wave scrubber to enter air cooler and enter back into drip separator to enter back into scavenging collector.
Detergent can select caustic soda, magnesium hydroxide or calcium hydroxide etc. according to different demands.
Compared with current flue gas scrubbing technology peculiar to vessel, the advantage that the utility model has has：
1, integrate desulfurization, dedusting, cooling three functions, eliminated relative to other EGR exhaust washing systems pre-
Washer, and reduce the load of the air cooler of postposition.
2, experiment shows that the efficiency of dust collection of utility model device is that can reach 99% or more, far above application at present
Venturi pre-scrubber in egr system, and entrainment rate is far below venturi pre-scrubber.
3, relative to other kinds of washer, the gas-liquid mass transfer of the utility model is more efficient, this is washed by dynamic wave
Wash what device self attributes were determined, under identical condition, desulfuration efficiency, in this way can be with also above other kinds of washer
Maximally reduce damage of the exhaust gas to engine.
4, the permitted empty tower gas velocity of dynamic wave scrubber is far above spray column and bubble tower, it means that in EGR peculiar to vessel
In arrangement on equipment machine, the actual internal area of exhaust gas can design smaller, substantially reduce the volume of EGR device.
5, the nozzle diameter of dynamic wave scrubber is big, and higher solid content, the less scaling blocking of nozzle is allowed to be directed to ship
With EGR device, more kinds of detergent can be selected, Ca (OH) also can be selected in addition to NaOH is as detergent2、Mg(OH)2Deng
The smaller but cheap detergent of solubility provides very big potentiality to the follow-up improvement upgrading of EGR device peculiar to vessel.
6, operating flexibility is big, there is the tolerance adaptability of wider range, and 50%~100% tolerance is allowed to fluctuate without dropping
Low detersive efficiency can guarantee high detersive efficiency under conditions of different EGR rates.
7, device structure is simple, reliable, and special dynamic wave scrubber is assemblied in EGR device, easy to disassemble and maintenance
Maintenance.
8, in order to reduce the volume of dynamic wave scrubber, the height of dynamic wave scrubber is reduced, convenient for being integrated in egr system
In, and convenient for the dismounting and maintenance of washer, dynamic wave scrubber is improved to multiple reverse jet tubes by common single reverse jet tube
Composition.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model marine diesel exhaust gas recycling wash mill.
Fig. 2 is the outline drawing of dynamic wave scrubber in Fig. 1.
Fig. 3 is the vertical view of Fig. 2.
Specific implementation mode
The system for applying to EGR peculiar to vessel to the utility model dynamic wave scrubber below in conjunction with the accompanying drawings is introduced, but not
The scope of protection of the utility model should be limited with this.
~Fig. 3 is please referred to Fig.1, Fig. 1 is the structural schematic diagram of the utility model marine diesel EGR gas system, figure
The construction profile figure of 2 special dynamic wave scrubbers, Fig. 3 are the vertical views of special dynamic wave scrubber.As shown, the spy
The dynamic wave scrubber of system is arranged in after exhaust header and Taper Pipe, before air cooler；
As seen from the figure, the utility model marine diesel exhaust gas recycles wash mill, including dynamic wave scrubber 3, should
Dynamic wave scrubber 3 include between two boards 12 more reverse jet tubes 11 being distributed be fixed on the upper middle of a washing tube and horizontal
To the interior bucket full of washing tube, the dynamic wave nozzle 15 of an opening upwards, a cleaning solution are equipped in every reverse jet tube 11
Conveying supervisor 13 communicates through more branch pipes 14 with the input terminal of each dynamic wave nozzle 15；From the exhaust header 1 of diesel engine through cone
Pipe 2 is connected with the upper end exhaust gas input ports of the washing tube, and the lower section of the dynamic wave scrubber 3 of washing tube is cleaning solution
The lower end outlet of baffle-box 4, the cleaning solution baffle-box 4 is connected through pipeline with the input terminal of the water treatment system 10 of cleaning solution, should
The output end of the water treatment system 10 of cleaning solution is by pipeline through washed liquid circulating pump 9 and the dynamic wave scrubber 3
Cleaning solution conveying supervisor 13 communicates, and one side of the cleaning solution baffle-box 4 is successively through air cooler 5, gas-liquid separator 6, air blast
Machine 7 is communicated with scavenging collector 8.
Level-one or two-stage nozzle are set in the reverse jet tube of the dynamic wave scrubber；Also two dynamic wave scrubbers can be used
It is connected in series and is divided to two sections of absorptions.
The dynamic wave scrubber) the injection flow velocity of detergent controlled by the detergent circulator 9, by diesel oil
The feed rate of machine exhaust gas determines.
The diameter of each reverse jet tube is between 80mm~300mm, and the height and diameter of bore ratio of reverse jet tube are 4:1~
12:Between 1.
Multiple reverse jet tubes 11 of diesel exhaust, exhaust gas flows from above to below, and cleaning solution passes through pipe by detergent circulator 9
System is sent into multiple reverse jet tubes 11, is inversely sprayed with off-gas flows direction from dynamic wave nozzle 15 is bottom-up, gas-liquid conversed collision
Froth zone is formed, the washed liquid of exhaust gas absorbs SO in exhaust gas2, exhaust gas and dust and after cooling by the reverse jet tube of dynamic wave scrubber
11 outlet discharge, the exhaust gas after washing is cooled again by air cooler 5 is sent into gas-liquid separator 6, and exhaust gas, which passes through, to be washed, is cold
But scavenging collector 8 is sent by air blower 7 after, removing water, the moisture detached in cleaning solution and gas-liquid separator 6 falls into air cooler 5
In cleaning solution baffle-box 4 below shell, the cleaning solution in the cleaning solution baffle-box 4 enters the water treatment system of cleaning solution
10 processing are sent into the power through more branch pipes 14 as detergent via circulating pump 9 and cleaning solution conveying supervisor 13 again
Multiple reverse jet tubes of wave washer 3 recycle.
The effect of the special dynamic wave scrubber is that the high-temp waste gas that will be discharged in working process of diesel engine is washed
Wash, remove exhaust gas in particulate matter, sulfur dioxide simultaneously certain cooling effect is played to exhaust gas, wash and it is cooled after exhaust gas
Further cooling through air cooler again removes the moisture in exhaust gas by drip separator, increases to exhaust gas by air blower
Pressure, is then fed into scavenging collector.
Claims (4)
1. a kind of marine diesel exhaust gas recycles wash mill, it is characterised in that including dynamic wave scrubber (3), the dynamic wave
Washer (3) includes that more reverse jet tubes (11) being distributed between two boards (12) are fixed on the upper middle of a washing tube and horizontal
To the interior bucket full of washing tube, the dynamic wave nozzle (15) of an opening upwards is equipped in every reverse jet tube (11), one is washed
Liquid conveying supervisor (13) is washed to communicate with the input terminal of each dynamic wave nozzle (15) through more branch pipes (14)；From the exhaust of diesel engine
Collector (1) is connected through Taper Pipe (2) with the upper end exhaust gas input ports of the washing tube, the dynamic wave scrubber of washing tube
(3) it is cleaning solution baffle-box (4) below, the lower end of the cleaning solution baffle-box (4) exports the water process through pipeline and cleaning solution
The input terminal of system (10) is connected, and the output end of the water treatment system (10) of the cleaning solution passes through the washed liquid circulating pump of pipeline
(9) it conveys supervisor (13) with the cleaning solution of the dynamic wave scrubber (3) to communicate, the one of the cleaning solution baffle-box (4)
Side is communicated through air cooler (5), gas-liquid separator (6), air blower (7) with scavenging collector (8) successively.
2. marine diesel exhaust gas according to claim 1 recycles wash mill, it is characterised in that：The dynamic wave
Level-one or two-stage nozzle are set in the reverse jet tube of washer；Also it can be used two dynamic wave scrubbers to be connected in series and be divided to two sections of absorptions.
3. marine diesel exhaust gas according to claim 1 recycles wash mill, it is characterised in that：The dynamic wave
The injection flow velocity of the detergent of washer (3) is controlled by the detergent circulator (9), by the feed rate of diesel exhaust
It determines.
4. marine diesel exhaust gas according to claim 1 recycles wash mill, it is characterised in that：Each reverse jet tube
Diameter is between 80mm~300mm, and the height and diameter of bore ratio of reverse jet tube are 4:1~12:Between 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721900547.2U CN208057197U (en) | 2017-12-29 | 2017-12-29 | Marine diesel exhaust gas recirculation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721900547.2U CN208057197U (en) | 2017-12-29 | 2017-12-29 | Marine diesel exhaust gas recirculation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208057197U true CN208057197U (en) | 2018-11-06 |
Family
ID=63994699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721900547.2U Active CN208057197U (en) | 2017-12-29 | 2017-12-29 | Marine diesel exhaust gas recirculation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208057197U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005759A (en) * | 2017-12-29 | 2018-05-08 | 中船动力研究院有限公司 | Marine diesel exhaust gas recirculation device |
| CN109396762A (en) * | 2018-11-09 | 2019-03-01 | 中船海洋动力部件有限公司 | The assembly method of marine diesel exhaust gas recirculation device shell |
| SE2251081A1 (en) * | 2022-09-19 | 2024-03-20 | Cetech Ab | An exhaust recirculation device for a 4-stroke compression ignition engine |
-
2017
- 2017-12-29 CN CN201721900547.2U patent/CN208057197U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005759A (en) * | 2017-12-29 | 2018-05-08 | 中船动力研究院有限公司 | Marine diesel exhaust gas recirculation device |
| CN109396762A (en) * | 2018-11-09 | 2019-03-01 | 中船海洋动力部件有限公司 | The assembly method of marine diesel exhaust gas recirculation device shell |
| SE2251081A1 (en) * | 2022-09-19 | 2024-03-20 | Cetech Ab | An exhaust recirculation device for a 4-stroke compression ignition engine |
| WO2024063685A1 (en) * | 2022-09-19 | 2024-03-28 | Cetech Ab | An exhaust recirculation device for a 4-stroke compression ignition engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8500893B2 (en) | Ship flue gas scrubbing equipment and method | |
| CN208057197U (en) | Marine diesel exhaust gas recirculation device | |
| CN107930398A (en) | Marine diesel oil tail gas and EGR exhaust joint washing system | |
| JP2019521841A (en) | System and method for reducing the amount of sulfur oxide in exhaust gas | |
| CN103638794B (en) | Marine diesel desulfurization packed tower | |
| CN102805999B (en) | Turbulent ball type turbocharging compound desulfurization dust removal tower | |
| CN105879555B (en) | A kind of marine low speed diesel exhaust composite washing device | |
| CN201239601Y (en) | Wet desulfurization device for absorbing flue gas by impact-flow | |
| CN104399367A (en) | Smoke washing device with scaling-shaped hole plate | |
| CN111701431B (en) | Ship exhaust gas desulfurization assembly | |
| CN108005759A (en) | Marine diesel exhaust gas recirculation device | |
| CN111346479A (en) | Marine diesel engine waste gas foam washing cooling dust removal desulfurization integrated device | |
| CN208212902U (en) | Marine diesel tail gas and EGR exhaust combine washing system | |
| CN203002194U (en) | Turbulent ball turbocharged composite desulphurization dedusting tower | |
| CN104689699B (en) | A kind of Ship Power Equipment exhaust gas cleaning system | |
| CN101298022B (en) | High-pressure fine water mist desulfurized dust collector with front-located dry precipitator and using method thereof | |
| CN110252096A (en) | A kind of ship tail gas high efficiency desulphurization plant and its application method | |
| CN108479324B (en) | Miniaturized boats and ships desulfurization falls nitre dust collector | |
| CN214345559U (en) | Ultrasonic atomization ship desulfurization system | |
| CN204543955U (en) | A kind of Ship Power Equipment exhaust gas cleaning system | |
| CN201389423Y (en) | Flue gas desulphurization dust removing tower for coal burning boiler | |
| CN105964081A (en) | Small-sized multilayer dust removal and desulfurization device | |
| CN201586463U (en) | Combined type boiler dust-removal and desulfurization device | |
| CN204320092U (en) | A kind of flue gas washing mechanism with convergent-divergent shape orifice plate | |
| CN209333507U (en) | The device that exhaust gas washs in egr system peculiar to vessel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |