CN108252830A - A kind of boat diesel engine exhaust gas method for recycling and device based on desulfurizing tower - Google Patents
A kind of boat diesel engine exhaust gas method for recycling and device based on desulfurizing tower Download PDFInfo
- Publication number
- CN108252830A CN108252830A CN201611230676.5A CN201611230676A CN108252830A CN 108252830 A CN108252830 A CN 108252830A CN 201611230676 A CN201611230676 A CN 201611230676A CN 108252830 A CN108252830 A CN 108252830A
- Authority
- CN
- China
- Prior art keywords
- diesel engine
- exhaust gas
- desulfurizing tower
- boat diesel
- boat
- 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.)
- Pending
Links
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004064 recycling Methods 0.000 title claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 47
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 26
- 230000023556 desulfurization Effects 0.000 claims abstract description 26
- 230000002000 scavenging effect Effects 0.000 claims abstract description 25
- 238000005406 washing Methods 0.000 claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 239000002283 diesel fuel Substances 0.000 claims abstract description 10
- 230000009467 reduction Effects 0.000 claims abstract description 8
- 239000002912 waste gas Substances 0.000 claims abstract description 8
- 239000000446 fuel Substances 0.000 claims abstract description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 36
- 229910052815 sulfur oxide Inorganic materials 0.000 description 15
- 238000010586 diagram Methods 0.000 description 5
- 230000008520 organization Effects 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
A kind of boat diesel engine exhaust gas method for recycling and device based on desulfurizing tower, the boat diesel engine include exhaust header and scavenging collector, it is characterised in that：The all waste gases of the boat diesel engine discharge enter desulfurizing tower and carry out desulfurization washing, and 30% exhaust gas is again introduced into the scavenging collector later, is mixed with the fresh air in the scavenging collector, reduces wherein O2Concentration, to reduce the peak temperature of fuel combustion, reduce the generation of NOx emission, then participate in the burn cycle of the boat diesel engine again, realize the joint emission reduction of SOx and NOx.The present invention has the advantages that reliable and stable, device is simple, of low cost, suitable for equipping the mid low speed diesel fuel machine peculiar to vessel with unequipped turbocharger.
Description
Technical field
The present invention relates to a kind of boat diesel engine gas recirculation systems, and in particular to a kind of ship bavin based on desulfurizing tower
Oil machine exhaust gas method for recycling and device, belong to Diesel Engine Technique Field.
Background technology
With the development that International Shipping Industry and foreign-going ship transport, using diesel oil to give up caused by the engine of boat and ship of fuel
Gas discharges the primary pollution source for having become ocean especially port area.Fuel used in boat diesel engine is high viscosity, height
The heavy oil of sulfur content, high carbon residue, in generated gaseous emissions, oxysulfide (SOx), nitrogen oxides (NOx) occupy compared with
Big proportion.Sulfur and nitrogen oxides in Marine Diesel Engine's Harmful Exhaust Emission are polluted caused by atmospheric environment has caused state
The extensive concern of border society.
In recent years, International Maritime Organization (International Maritime Organization, IMO) to SOx and
The requirement of NOx emission increasingly improves, for corresponding emission specify emission control area (Emission Control Areas,
ECA).According to International Maritime Organization and concerned countries, the regulation in area, the ship of corresponding marine site emission regulation demands is not reached
It would not allow for navigating by water in the region.
For reducing the content of NOx and SOx in Marine Diesel Engine's Harmful Exhaust Emission, current solution is desulfurizing tower+useless
Gas recycles (EGR), and desulfurizing tower can effectively reduce SOx contents, and egr system can effectively reduce NOx content.Wherein egr system will
Scavenging collector is introduced after vent scrub cooling before a part of booster, is mixed with the fresh air in scavenging collector, Ran Houcan
With burning.Due to the CO in exhaust2Content is higher so that participates in the O in the scavenging air of burning2Concentration reduces；Simultaneously as
CO2With respect to O2With higher specific heat capacity, therefore above-mentioned egr system can reduce the peak temperature of cylinder fuel combustion, so as to
Reduce the generation of NOx emission in exhaust gas.
For the diesel engine using egr system, need to increase cut-out booster on a diesel engine, EGR air inlet pipe, pre-wash
The devices such as agent, EGR air coolers, EGR wind turbines, EGR drip separators, EGR line, additionally need set outside diesel engine it is a set of
Water treatment system, to support the normal operation of egr system.Thus using EGR technology conventional scheme need to host carry out compared with
Big transformation, and need to put into larger improvement cost, there are the defects of flow is cumbersome, device is complicated, with high costs.
Invention content
The technical problems to be solved by the invention are to overcome the shortcomings of spot ship diesel engine waste gas recycling system, right
Above joint emission reduction schedule is improved, and is provided a kind of more emulative boat diesel engine exhaust gas based on desulfurizing tower and is followed again
Ring method and apparatus, by the exhaust gas of boat diesel engine discharge after desulfurizing tower desulfurization washing, a bypass part is again introduced into bavin
Oil machine burn cycle, so as to reduce the Sox and NOx emission in diesel exhaust gas, reach system is reliable and stable, device is simple,
Reduce the effect of cost.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of boat diesel engine exhaust gas method for recycling based on desulfurizing tower, the boat diesel engine include exhaust header and sweep
Gas collector, it is characterised in that：The all waste gases of boat diesel engine discharge enter desulfurizing tower and carry out desulfurization washing, and later 30%
Exhaust gas be again introduced into the scavenging collector, mixed with the fresh air in the scavenging collector, reduce wherein O2Concentration, with drop
The peak temperature of low fuel burning, reduces the generation of NOx emission, the burning for then participating in the boat diesel engine again follows
Ring realizes the joint emission reduction of SOx and NOx.
The present invention another technical solution be：
A kind of boat diesel engine exhaust gas recirculation device based on desulfurizing tower for being used to implement the above method, includes de-
Sulphur tower, by-passing valve, diesel exhaust pipe, exhaust pipe and muffler, the desulfurizing tower connect institute by the diesel exhaust pipe
The exhaust header of boat diesel engine is stated, all waste gases that the boat diesel engine discharges are carried out desulfurization in the desulfurizing tower
Washing, the exhaust pipe is connected to the top of the desulfurizing tower, 70% desulfurization exhaust gas is emitted into air, the bypass
Valve one end connects the desulfurizing tower, and the other end connects the boat diesel engine by the muffler, to by 30% desulfurization
Exhaust gas is transmitted back to the boat diesel engine and participates in burn cycle.
Further, the boat diesel engine be the mid low speed diesel fuel machine peculiar to vessel equipped with turbocharger, described time
Tracheae connects the scavenging collector of the boat diesel engine by the turbocharger.
Further, the exhaust gas recirculation device has further included wind turbine, which is connected to the by-passing valve with returning
Between tracheae, to carry out pressure pressurization to the desulfurization exhaust gas, the muffler is directly connected to the boat diesel engine
Scavenging collector.
Further, the boat diesel engine is the mid low speed diesel fuel machine peculiar to vessel of unequipped turbocharger.
Compared with prior art, beneficial effects of the present invention are as follows：
All exhausts of diesel engine are sent into desulfurizing tower and carry out desulfurization washing by the present invention, will be reduced after desulfurization washing in being vented
SOx emissions；It is meanwhile fresh in about 30% exhaust introducing the scavenging collector, with scavenging collector after desulfurizing tower is washed
The burning of diesel engine is participated in after air mixing again, forms a set of egr system, effectively reduces the discharge of NOx in exhaust, therefore
Realize the joint emission reduction of SOx and NOx.The present invention has the advantages that reliable and stable, device is simple, of low cost, suitable for dress
The mid low speed diesel fuel machine peculiar to vessel of standby and unequipped turbocharger.
Description of the drawings
Fig. 1 is the method schematic diagram of the present invention.
Fig. 2 is the structure diagram of apparatus of the present invention embodiment one.
Fig. 3 is the structure diagram of apparatus of the present invention embodiment two.
Specific embodiment
Boat diesel engine exhaust gas method for recycling of the present invention based on desulfurizing tower is suitable for equipment and unequipped whirlpool
The mid low speed diesel fuel machine peculiar to vessel of booster is taken turns, which includes exhaust header and scavenging collector.It please refers to
Fig. 1, the exhaust gas method for recycling are：The all waste gases of the boat diesel engine discharge enter desulfurizing tower and carry out desulfurization washing, it
30% exhaust gas is again introduced into the scavenging collector afterwards, is mixed with the fresh air in the scavenging collector, reduces wherein O2It is dense
Degree, to reduce the peak temperature of fuel combustion, reduces the generation of NOx emission, then participates in the boat diesel engine again
Burn cycle realizes the joint emission reduction of SOx and NOx.
The boat diesel engine exhaust gas of the present invention based on desulfurizing tower is followed again in the following with reference to the drawings and specific embodiments
Loop device is described in further detail, but should not limited the scope of the invention with this.
Embodiment one
Referring to Fig. 2, boat diesel engine exhaust gas recirculation device of the diagram based on desulfurizing tower includes desulfurizing tower 1, bypass
Valve 2, diesel exhaust pipe a, exhaust pipe b and muffler c.
The desulfurizing tower 1 is mounted on the downstream of the boat diesel engine, and the ship is connected by the diesel exhaust pipe a
The exhaust header of oceangoing ship diesel engine is washed all waste gases that the boat diesel engine discharges are carried out desulfurization in the desulfurizing tower 1
It washs.The exhaust pipe b is connected to the top of the desulfurizing tower 1,70% desulfurization exhaust gas is emitted into air.The bypass
Valve 2 is arranged at the 1 by-pass flue mouth of desulfurizing tower, and one end connects the desulfurizing tower 1, and the other end is connected by the muffler c
The suction end of the turbocharger of the boat diesel engine is connect, and passes through the turbocharger and connects sweeping for the boat diesel engine
Gas collector；The by-passing valve 2 and muffler c by 30% desulfurization exhaust gas to be transmitted back to the boat diesel engine, with scavenging collection
The burn cycle of diesel engine is participated in after fresh air mixing in pipe again.This embodiment scheme is suitble to equipped with turbocharger
Mid low speed diesel fuel machine peculiar to vessel.
The operation principle of the present embodiment is as follows：
Referring to Fig. 1, when boat diesel engine works, whole exhaust gas of generation pass through exhaust header and diesel exhaust pipe
A enters desulfurizing tower 1, and SOx emission and particulate matter of the desulfurizing tower 1 to diesel engine in all exhausts carry out desulfurization washing, effectively
Ground reduces the content of the SOx in diesel exhaust gas, is washed by the desulfurization inside desulfurizing tower 1, the SOx in boat diesel engine exhaust
Content is under control.
About 70% or so the exhaust by desulfurization washing is directly discharged to by exhaust pipe b in air, due to desulfurizing tower 1
Desulfurization cleaning function, the SOx products in diesel exhaust gas is made effectively to be filtered, reduce the SOx being emitted into air.Separately
Outer 30% or so the exhaust by desulfurization washing is directly entered the booster of diesel engine by by-passing valve 2 and muffler c, and then
It is mixed with the fresh air in scavenging collector, makes CO in scavenging2Concentration rises, O2Concentration declines；And O2The decline of concentration can make
Diesel combustion is insufficient, and then peak temperature during reduction diesel combustion；Simultaneously because CO2With respect to O2With higher ratio
Thermal capacitance also can further reduce peak temperature during diesel combustion.It is well known that in high-temperature oxygen-enriched combustion during diesel combustion
It burns and easily generates NOx production under environment, and the exhaust gas recirculation device makes diesel engine in gas in-cylinder combustion, both reduces O2
Concentration, and the peak temperature of burning is reduced, so as to control the generation of NOx emission well.
In conclusion the boat diesel engine exhaust gas recirculation device of the present invention based on desulfurizing tower realize it is reliable and stable
SOx and NOx joint emission reduction, have the advantages that device is simple, of low cost.
Embodiment two
The structure of the present embodiment and embodiment one are essentially identical, the difference lies in：Wind turbine is further included.Referring to Fig. 3,
Boat diesel engine exhaust gas recirculation device of the diagram based on desulfurizing tower includes desulfurizing tower 1, by-passing valve 2, wind turbine 3, diesel engine and gives up
Tracheae a, exhaust pipe b and muffler c；The wind turbine 3 is mounted on the downstream of the by-passing valve 2, is connected to the by-passing valve 2 and return-air
Between pipe c, to carry out pressure pressurization to the desulfurization exhaust gas, the muffler c is directly connected to the boat diesel engine
Scavenging collector.
During work, the wind turbine 3 carries out pressure pressurization to the desulfurization exhaust gas after by-passing valve 2, and passes through the muffler c and incite somebody to action
30% or so desulfurization exhaust gas of bypass is sent to the scavenging collector of diesel engine, is mixed with the fresh air in scavenging collector, again
Participate in the burn cycle of diesel engine.
The present embodiment is suitable for the mid low speed diesel fuel machine peculiar to vessel of unequipped turbocharger.
Presently preferred embodiments of the present invention is above are only, is not used for limiting protection scope of the present invention, Fan Yibenfa
The equivalence changes and improvement that bright context is made are regarded as present invention scope claimed.
Claims (5)
1. a kind of boat diesel engine exhaust gas method for recycling based on desulfurizing tower, which includes exhaust header and scavenging
Collector, it is characterised in that：The all waste gases of boat diesel engine discharge enter desulfurizing tower and carry out desulfurization washing, and later 30%
Exhaust gas is again introduced into the scavenging collector, is mixed with the fresh air in the scavenging collector, reduces wherein O2Concentration, with reduce
The peak temperature of fuel combustion reduces the generation of NOx emission, then participates in the burn cycle of the boat diesel engine again,
Realize the joint emission reduction of SOx and NOx.
2. a kind of boat diesel engine exhaust gas recirculation device based on desulfurizing tower for being used to implement claim 1 the method,
It is characterized in that：The exhaust gas recirculation device includes desulfurizing tower, by-passing valve, diesel exhaust pipe, exhaust pipe and muffler, institute
The exhaust header that desulfurizing tower connects the boat diesel engine by the diesel exhaust pipe is stated, the boat diesel engine to be arranged
The all waste gases put carry out desulfurization washing in the desulfurizing tower, and the exhaust pipe is connected to the top of the desulfurizing tower, to
70% desulfurization exhaust gas is emitted into air, described by-passing valve one end connects the desulfurizing tower, and the other end passes through the muffler
The boat diesel engine is connected, burn cycle is participated in 30% desulfurization exhaust gas is transmitted back to the boat diesel engine.
3. the boat diesel engine exhaust gas recirculation device according to claim 2 based on desulfurizing tower, it is characterised in that：It is described
Boat diesel engine for the mid low speed diesel fuel machine peculiar to vessel equipped with turbocharger, the muffler is connected by the turbocharger
Lead to the scavenging collector of the boat diesel engine.
4. the boat diesel engine exhaust gas recirculation device according to claim 2 based on desulfurizing tower, it is characterised in that：It is described
Exhaust gas recirculation device further included wind turbine, which is connected between the by-passing valve and muffler, to described
Desulfurization exhaust gas carries out pressure pressurization, and the muffler is directly connected to the scavenging collector of the boat diesel engine.
5. the boat diesel engine exhaust gas recirculation device according to claim 4 based on desulfurizing tower, it is characterised in that：It is described
Boat diesel engine be unequipped turbocharger mid low speed diesel fuel machine peculiar to vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611230676.5A CN108252830A (en) | 2016-12-28 | 2016-12-28 | A kind of boat diesel engine exhaust gas method for recycling and device based on desulfurizing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611230676.5A CN108252830A (en) | 2016-12-28 | 2016-12-28 | A kind of boat diesel engine exhaust gas method for recycling and device based on desulfurizing tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108252830A true CN108252830A (en) | 2018-07-06 |
Family
ID=62719308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611230676.5A Pending CN108252830A (en) | 2016-12-28 | 2016-12-28 | A kind of boat diesel engine exhaust gas method for recycling and device based on desulfurizing tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108252830A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021212626A1 (en) * | 2020-04-24 | 2021-10-28 | 江苏海事职业技术学院 | Desulfurization tower-based exhaust recirculation device for ship diesel engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120312166A1 (en) * | 2009-12-21 | 2012-12-13 | Bayer Intellectual Property Gmbh | System and method for purifying ship diesel exhaust gases |
| CN103052790A (en) * | 2010-08-24 | 2013-04-17 | 三菱重工业株式会社 | Engine exhaust-gas purification device |
| CN104234795A (en) * | 2013-06-07 | 2014-12-24 | 曼卡车和巴士股份公司 | Method and device for desulphurizing an exhaust-gas recirculation flow |
| CN104736830A (en) * | 2013-01-10 | 2015-06-24 | 三菱重工业株式会社 | Ship |
| CN206439125U (en) * | 2016-12-28 | 2017-08-25 | 沪东重机有限公司 | A kind of boat diesel engine ERG based on desulfurizing tower |
-
2016
- 2016-12-28 CN CN201611230676.5A patent/CN108252830A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120312166A1 (en) * | 2009-12-21 | 2012-12-13 | Bayer Intellectual Property Gmbh | System and method for purifying ship diesel exhaust gases |
| CN103052790A (en) * | 2010-08-24 | 2013-04-17 | 三菱重工业株式会社 | Engine exhaust-gas purification device |
| CN104736830A (en) * | 2013-01-10 | 2015-06-24 | 三菱重工业株式会社 | Ship |
| CN104234795A (en) * | 2013-06-07 | 2014-12-24 | 曼卡车和巴士股份公司 | Method and device for desulphurizing an exhaust-gas recirculation flow |
| CN206439125U (en) * | 2016-12-28 | 2017-08-25 | 沪东重机有限公司 | A kind of boat diesel engine ERG based on desulfurizing tower |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021212626A1 (en) * | 2020-04-24 | 2021-10-28 | 江苏海事职业技术学院 | Desulfurization tower-based exhaust recirculation device for ship diesel engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104358627B (en) | Boat diesel engine NOx and SOx associating emission reduction device and control method | |
| CN103052790B (en) | Engine exhaust gas purification device | |
| CN204253221U (en) | Boat diesel engine NOx and SOx combines emission reduction device | |
| CN103585867B (en) | A kind of flue gas desulfurization and denitration method and device | |
| KR101607654B1 (en) | A large slow running turbocharged two-stroke internal combustion engine with crossheads and exhaust gas recirculation and method for operating thereof | |
| CN105289241A (en) | Combined desulphurization and denitration device and method of marine diesel engine | |
| KR20150004939A (en) | Engine exhaust gas purification device | |
| CN104405542A (en) | Vessel two-stroke diesel engine exhaust gas recirculation system and control method | |
| CN105179119A (en) | Exhaust gas recirculation system for two-stroke low-speed diesel engine of double-turbine ship | |
| CN108533424A (en) | The changeable gas recirculation system of the pattern of two strokes low-speed diesel engine peculiar to vessel | |
| CN107737527A (en) | Marine exhaust dedusting denitrification integral system | |
| CN206694152U (en) | A kind of boat diesel engine gas recirculation system | |
| CN206439125U (en) | A kind of boat diesel engine ERG based on desulfurizing tower | |
| CN108252830A (en) | A kind of boat diesel engine exhaust gas method for recycling and device based on desulfurizing tower | |
| CN104121072B (en) | Waste gas pollutant combined removal device for two-stroke diesel engine | |
| CN105749720B (en) | A kind of denitrating system and method | |
| JP5852029B2 (en) | Recirculation exhaust gas purification apparatus and method | |
| CN205001086U (en) | Dual turbine boats and ships two cycle low -speed diesel exhaust recirculation system | |
| JP5889229B2 (en) | Recirculation exhaust gas purification device and recirculation exhaust gas purification method | |
| CN103925072B (en) | A kind of supercharged diesel engine environmental protecting device based on EGR and air inlet humidification | |
| CN205779317U (en) | A kind of marine low speed diesel engine Venturi tube ERG of improvement | |
| CN102767436A (en) | Operating method of engine, engine and vehicle | |
| CN105781809A (en) | Twin-turbo EGR system and method for ship two-stroke diesel engine | |
| CN204253220U (en) | A kind of boats and ships two stroke diesel engine gas recirculation system | |
| CN205714484U (en) | The double turbine egr system of a kind of boats and ships two stroke diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180706 |
|
| WD01 | Invention patent application deemed withdrawn after publication |