CN208212902U - Marine diesel tail gas and EGR exhaust combine washing system - Google Patents
Marine diesel tail gas and EGR exhaust combine washing system Download PDFInfo
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- CN208212902U CN208212902U CN201721880074.4U CN201721880074U CN208212902U CN 208212902 U CN208212902 U CN 208212902U CN 201721880074 U CN201721880074 U CN 201721880074U CN 208212902 U CN208212902 U CN 208212902U
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Abstract
A kind of marine diesel tail gas and EGR exhaust combine washing system, diesel exhaust export structure includes exhaust header, scavenging collector, Marine Waste Heat Boiler, booster and diesel air cooling system, it further include EGR exhaust washing system, ship tail gas washing system, washing water supply and processing system, the washing of two kinds of exhaust gas is used for using dynamic wave scrubber, it is used in vent gas washing system and adds one group of spray washing outside two-stage dynamic wave scrubbing, after being arranged in air cooler using special dynamic wave scrubber in EGR exhaust washing system, it is all arranged in after wash mill using drip separator and air blower in the two systems.The utility model is washed by the exhaust gas being applied to high energy scrubber in ship, greatly improves the detersive efficiency of exhaust gas, is used sea water solution to reduce the consumption of ship alkaline matter as detergent, is greatly reduced the operating cost of exhaust gas scrubber.
Description
Technical field
The utility model relates to marine diesel, especially a kind of marine diesel tail gas and EGR exhaust joint washing system
System.
Background technique
Currently, demand of the ship domain to desulfurization has shown, to the need of desulfurization with the implementation successively of 3 regulation of Tier
Aspect there are two asking:
First is that ship tail gas desulfurization.Currently, the IMO regulation region ECA marine fuel oil sulfur content need to be lower than 0.1%, the non-area ECA
Domain fuel oil sulfur content is lower than 3.5%.To the year two thousand twenty, the fuel oil sulfur content in unrestricted region will be limited in 0.5% in global range
Within (may also 2018 determine postpone till 2025 implement), these sulfur content limitation index be also allowed to by using
Desulfurizer is post-processed to realize, so that tail gas sulfur content is equal to or less than the sulphur discharged using the fuel oil of the index sulfur content
Concentration.Low Sulfur Fuel Oil is expensive, and since Low Sulfur Fuel Oil viscosity is smaller, not can be used directly on spot ship host,
Ship piping system need to be reequiped, increase fuel oil cooling system, also increase cost.So marine exhaust desulfurization at present has become
Important research direction both at home and abroad.
Second is that the exhaust gas of ship recycles (referred to as EGR) system desulfurization.Since IMO is to the nitrogen oxides in the region ECA
Concentration of emission is made that harsh regulation, and to reach the set quota, three kinds of EGR, SCR, double fuel type technological means must
It must one-out-three.Exhaust gas is before being recycled into scavenging collector in egr system, it is necessary to remove SO contained in exhaust gas2And particulate matter,
To prevent the damage to combustion chamber components, have an adverse effect to oil lubrication function, the reliability of host, service life are generated not
Benefit influences.
Ship still uses the heavy oil of sulfur content 3.5% as fuel, to meet the requirement of 0.1% sulfur content of the region ECA,
Ship tail gas detersive efficiency needs to be greater than 97%；Exhaust gas detersive efficiency in egr system generally also needs to reach 95% or more, this is right
The detersive efficiency of washer proposes high requirement, and common washer such as spray column, packed tower are unable to reach so high
It is required that generally increasing detersive efficiency using modes such as multi-stage spray, increase filler, raising circulation fluid basicity, will lead in this way
Scrubbing tower equipment volume, weight increase, and also improve requirement of the equipment to corrosion resistance.Exhaust gas can be effectively removed using seawater
In SO2, but the detersive efficiency of seawer washing is not high, and the exhaust gas washing effect high to sulfur content is not very good.
The utility model uses that a kind of extremely efficient washing facility --- dynamic wave scrubber can effectively improve seawater
Desulfurization degree, and increase the measure that lye supplements and reinforcing is washed on the basis of seawer washing and be unfavorable for detersive efficiency to apply
Special operation condition.
Utility model content
The purpose of this utility model is to provide a kind of marine diesel tail gas and EGR exhaust to combine washing system, this is washed
System is washed while meeting high detersive efficiency, reduces alkaline matter consumption, to the maximum extent to reach egr system to desulfurization
The requirement of efficiency reaches requirement of the regulation to ship tail gas sulphur emissions simultaneously.
The technical solution of the utility model is as follows:
A kind of marine diesel tail gas and EGR exhaust combine washing system, and diesel exhaust export structure includes exhaust collection
Pipe, scavenging collector, Marine Waste Heat Boiler, booster and diesel air cooling system, it is characterized in that: it further include EGR exhaust washing
System, ship tail gas washing system, washing water supply and processing system:
The EGR exhaust washing system is successively turned off valve, air cooler cleaning device, air cooler, array from top to bottom
Formula dynamic wave scrubber, space, cleaning solution baffle-box, the other end of the stop valve are connected with the exhaust header, institute
First drip separator of side in the space stated, the first air blower, commutation regulating valve are communicated with the scavenging collector, the
Pipeline between one air blower and commutation regulating valve is equipped with the first sulfide concentration and monitors sensor, the cleaning solution buffering
The bottom outlet of case is communicated with the level-one aeration tank of the ship tail gas washing system by the road；
The ship tail gas washing system includes dynamic wave scrubbing tower, is successively from top to bottom in the dynamic wave scrubbing tower
There are single reverse jet tube in second drip separator, spray spout, cavity, level-one aeration tank, the side of the dynamic wave scrubbing tower, the list
The upper port of root reverse jet tube is communicated through flue gas flow meter with the tail gas input channel of ship, the tail gas input channel respectively with it is described
Waste heat boiler, oil burning boiler exhaust gas communicate, the waste heat boiler is communicated with engine exhaust, exhaust header respectively, in institute
It is successively the big nozzle of the first dynamic wave and the big nozzle of the second dynamic wave from top to bottom in the single reverse jet tube stated, the level-one exposes
Gas pond is communicated through pipeline with second level aeration neutralization pond, and the second air blower of top of the dynamic wave scrubbing tower is communicated with atmosphere,
It is equipped with the second sulfide concentration on the output pipe of the second air blower and monitors sensor；
The washing water supply and processing system include mixing tank, second level aeration neutralization pond, lye tank, are separated by solid-liquid separation system
System, alkaline stream meter, washing fluid supply pump, sea water supply pump, lye supply pump and discharging of waste liquid pump, the lye tank is through the
One lye supply pump, the first alkaline stream meter are communicated with the mixing tank, and the mixing tank is through the first washing fluid supply pump and institute
The big nozzle of the first dynamic wave and the big nozzle of the second dynamic wave stated communicate, and the mixing tank is through the second washing fluid supply pump and described
Spray spout communicates, which communicates through third washing fluid supply pump with the dynamic wave nozzle, the lye tank warp
Second lye supply pump, the second alkaline stream meter are communicated with the second level aeration neutralization pond, which is aerated the defeated of neutralization pond
Outlet through the solid-liquid separation system, discharging of waste liquid pump output, the output end of the third air blower through pipeline respectively with
The level-one aeration tank, second level aeration neutralization pond communicate.
The spraying cleaning solution direction of the big nozzle of first dynamic wave and the big nozzle of the second dynamic wave and airflow direction phase
Instead.
The array dynamic wave scrubber is assembled into reverse jet tube by the two boards at the both ends of the reverse jet tube of multiple parallel connections
Array；Cleaning solution intake line is made of a general pipeline and Duo Gen branch pipe and communicates with every reverse jet tube, if every branch pipe is equipped with
Dry dynamic wave nozzle, every reverse jet tube all contain level-one or double-stage nozzle, and spraying cleaning solution direction is upward, with airflow direction phase
Instead；
Level-one or double-stage nozzle are set in every reverse jet tube, it is also possible to which two array column dynamic wave scrubbers are connected in series point
Two sections of absorptions.
The washing fluid supply pump is variable frequency pump, and the flow of cleaning solution is adjustable.
The utility model is provided with two kinds of changeable washing modes: the inefficient washing mode of seawater and seawater high-efficient washing mould
Formula.
Seawater inefficient mode is plunged into the commercial sea water pump operation, washing fluid supply pump operation, but supply cleaning solution for spray spout the
Two washing fluid supply pumps are out of service, and the first lye supply pump and the second lye supply pump are out of service, seawater high-efficient washing mould
Under formula on the basis of seawater inefficient washing mode, starts the first lye supply pump and the second lye supply pump and be spray spout
Supply the second washing fluid supply pump of cleaning solution.
Exhaust gas is respectively arranged with the monitoring of the second sulfide concentration on the pipeline before entering atmosphere and scavenging collector of keeping forging ahead
Sensor, the first sulfide concentration monitor sensor, and flue gas is arranged on the pipeline before ship tail gas enters dynamic wave scrubbing tower
Flowmeter.
In mixing tank and two-stage aeration tank, it is provided with pH value sensor.
Two-stage aeration neutralization pond is set, and first order aeration tank is arranged in dynamic wave scrubbing tower, and the second level is aerated neutralization pond
It individually sets up, and has lye supply, third air blower inputs oxygen to level-one aeration tank and second level aeration neutralization pond.
Sea water solution, either pure seawater or fluviatic fresh water, are also possible in above two water
Solution after adding alkaline matter.
The dynamic wave scrubber, while having the function of desulfurization, dedusting, three kinds of cooling to exhaust gas, by efficient
Washing is to reach effective removing to exhaust gas sulphur oxide and particulate matter.
The technical effect of the utility model is as follows:
The utility model is under the premise of meeting desulfuration efficiency, washing before being not turned on lye supply pump, being not turned on spray spout
Wash fluid supply pump.
The utility model cleaning solution is the seawater that pure seawater either adds alkaline matter in some conditions, ship
The mode of the washing of tail gas is the washing of array dynamic wave scrubber or increases the dynamic wave of spray washing under certain conditions
Mode of washing.
Washing fluid supply pump described in the utility model is variable frequency pump, entrance and the mixing tank output pipe phase of variable frequency pump
Even, the outlet of variable frequency pump is connected with dynamic wave nozzle or spray spout.
It is respectively provided with and drips after the scrubbers in the EGR exhaust washing system of ship tail gas washing system in the utility model
Separator is respectively provided with sulfide concentration detection sensor after being respectively provided with air blower, air blower after drip separator.
In the utility model EGR exhaust washing system array dynamic wave scrubber combined by the reverse jet tube of multiple parallel connections and
At；Contain dynamic wave nozzle in each reverse jet tube, spraying cleaning solution direction is opposite with airflow direction, each reverse jet tube is cylinder
Shape pipe, material are that fire resistant anticorrosive tears material open；Detergent delivery duct is made of a general pipeline and several branch pipes, every branch
Several dynamic wave nozzles are equipped on pipe, the material for conveying piping is resistant material.
Detailed description of the invention
Fig. 1 is the system schematic of the utility model.
Fig. 2 is the outline drawing of the dynamic wave scrubber in Fig. 1.
Fig. 3 is the top view of Fig. 2.
Specific embodiment
First referring to Fig. 1, Fig. 1 is the utility model marine diesel exhausted gas post-processing system structural schematic diagram.It can by figure
See, the utility model marine diesel tail gas and EGR exhaust combine washing system, and diesel exhaust export structure includes exhaust collection
Pipe 1, scavenging collector 2, Marine Waste Heat Boiler 4, booster 9 and diesel air cooling system 10, further include EGR exhaust washing system,
Ship tail gas washing system, washing water supply and processing system:
The EGR exhaust washing system is successively turned off valve 11, air cooler cleaning device 12, air cooler from top to bottom
13, array dynamic wave scrubber 14, space, cleaning solution baffle-box 15, the other end of the stop valve 11 and the row
Gas collector 1 is connected, side the first drip separator 16, the first air blower 17, commutation regulating valve 19 and the institute in the space
The scavenging collector 2 stated communicates, and is equipped with the first sulfide concentration on the pipeline between the first air blower 17 and commutation regulating valve 19
Sensor 18 is monitored, 15 bottom outlet of cleaning solution baffle-box is exposed with the level-one of the ship tail gas washing system by the road
Gas pond 20 communicates；
The ship tail gas washing system includes dynamic wave scrubbing tower 3, in the dynamic wave scrubbing tower 3 from top to bottom according to
Secondary is the second drip separator 161, spray spout 29, cavity, level-one aeration tank 20, and there is list in the side of the dynamic wave scrubbing tower 3
The upper port of root reverse jet tube, the single reverse jet tube is communicated through flue gas flow meter 21 with the tail gas input channel of ship, and the tail gas is defeated
Enter pipeline to communicate with the waste heat boiler 4, oil burning boiler exhaust gas 35 respectively, the waste heat boiler 4 and engine exhaust 34,
Exhaust header 1 communicates, and is successively the big nozzle 28 of the first dynamic wave and the second power from top to bottom in the single reverse jet tube
The big nozzle 281 of wave, the level-one aeration tank 20 are communicated through pipeline with second level aeration neutralization pond 6, the dynamic wave scrubbing tower 3
The second air blower of top 171 communicated with atmosphere, on the output pipe of the second air blower 171 be equipped with the second sulfide concentration
Monitor sensor 181；
The washing water supply and processing system include mixing tank 5, second level aeration neutralization pond 6, lye tank 7, solid-liquid point
From system 8, alkaline stream meter 22, washing fluid supply pump 23, sea water supply pump 24, lye supply pump 25 and discharging of waste liquid pump 26,
The lye tank 7 is communicated through the first lye supply pump 25, the first alkaline stream meter 22 with the mixing tank 5, the mixing tank 5
It is communicated through the first washing fluid supply pump 23 with the big nozzle 28 of first dynamic wave and the big nozzle 281 of the second dynamic wave, this is mixed
Mould assembling 5 is communicated through the second washing fluid supply pump 231 with the spray spout 29, which washs fluid supply pump through third
232 communicate with the dynamic wave nozzle 27, and the lye tank 7 is through the second lye supply pump 251, the second alkaline stream meter
221 communicate with the second level aeration neutralization pond 6, which is aerated the delivery outlet of neutralization pond 6 through the solid-liquid separation system
8,26 output of discharging of waste liquid pump, the output end of the third air blower 172 through pipeline respectively with the level-one aeration tank 20,
Second level aeration neutralization pond 6 communicates.
The spraying cleaning solution direction of the big nozzle 28 of first dynamic wave and the big nozzle 281 of the second dynamic wave and air-flow side
To opposite.
The array dynamic wave scrubber 14 is assembled by the two boards 50 at the both ends of the reverse jet tube 51 of multiple parallel connections
Reverse jet tube array；Cleaning solution intake line is made of a general pipeline 52 and Duo Gen branch pipe 53 and communicates with every reverse jet tube 51, often
Root branch pipe is equipped with several dynamic wave nozzles, and every reverse jet tube 51 all contains level-one or double-stage nozzle 54, spraying cleaning solution direction
Upwards, opposite with airflow direction；
In every reverse jet tube 51 in set level-one or double-stage nozzle 54, it is also possible to two array column dynamic wave scrubbers series connection and
Two sections of ingredient absorptions.
The washing fluid supply pump is variable frequency pump, and the flow of cleaning solution is adjustable.
The exhaust gas for needing to wash has ship tail gas and EGR exhaust two-way, and at the non-region ECA, stop valve 11 is closed, and EGR stops
Only, washing tail gas is only carried out, ship tail gas and EGR exhaust gas are washed simultaneously at the region ECA.In EGR exhaust washing system
In, exhaust gas enters air cooler 13 through stop valve 11 and is cooled in exhaust header 1, and the air cooler cleaning device 12 is to air cooler
13 are cleaned, and 13 upper surface fouling of air cooler is prevented, and exhaust gas after cooling enters the dynamic wave scrubber 14, exhaust gas warp
Washing enters the first drip separator 16 later, enters back into the pressurization of the first air blower 17 and passes through described in the commutation entrance of regulating valve 19
Scavenging collector 2.In ship tail gas washing system, host exhaust gas and generator exhaust gas are through waste heat boiler 4 through the flue gas
Flowmeter 21 enters dynamic wave scrubbing tower 3, and oil burning boiler exhaust gas 35 is directly washed through the flue gas flow meter 21 into dynamic wave
Tower 3 is washed, the first dynamic wave big nozzle 28 is first passed through and chilling is carried out to exhaust gas, then answer nozzle 281 through the second dynamic wave and washed,
Exhaust gas enters back into scrubbing tower by the further washing (high effective model) of spray spout 29, is removed by the second drip separator 161
Moisture, then influence of the washing system to booster back pressure is reduced to exhaust gas by the second air blower 171, it is last up to standard
Exhaust gas 33 drain into atmosphere.In washing system, seawater 31 is through described in the entrance of seawater transfer pump 24 under inefficient washing mode
Mixing tank 5 in, then exhaust gas is washed into the first dynamic wave scrubber big nozzle 28 by the first washing fluid supply pump 23
It washs, seawater falls into the level-one aeration tank 20 in tower after washing to exhaust gas, and it enters back into secondary aeration neutralization pond 6 and carries out secondary aeration,
Sludge is separated and collected through solid-liquid separation system 8 again, outboard is discharged in seawater 32 up to standard.
High-efficient washing mode is carried out on the basis of inefficient washing mode, and lye is supplied from lye tank 7 through the first lye
Pump 25 enters the basicity that mixing tank 5 improves seawater, increases cleaning solution all the way in mixing tank 5 and passes through the second washing fluid supply pump 231
Exhaust gas is washed again into spray washing nozzle 29.Cleaning solution in EGR also comes from mixing tank 5 and is washed by third
It washs fluid supply pump 232 and enters the dynamic wave scrubber 14, enter cleaning solution baffle-box 15 after washing, enter back into power
It is handled together with the waste water in ship tail gas washing system in level-one aeration tank 20 in wave scrubbing tower 3.
Claims (4)
1. a kind of marine diesel tail gas and EGR exhaust combine washing system, diesel exhaust export structure includes exhaust header
(1), scavenging collector (2), Marine Waste Heat Boiler (4), booster (9) and diesel air cooling system (10), it is characterised in that: also wrap
Include EGR exhaust washing system, ship tail gas washing system, washing water supply and processing system:
The EGR exhaust washing system is successively turned off valve (11), air cooler cleaning device (12), air cooler from top to bottom
(13), array dynamic wave scrubber (14), space, cleaning solution baffle-box (15), the other end of the stop valve (11) with
The exhaust header (1) is connected, and first drip separator of side (16) in the space, changes the first air blower (17)
It is communicated to regulating valve (19) with the scavenging collector (2), the pipe between the first air blower (17) and commutation regulating valve (19)
Road be equipped with the first sulfide concentration monitoring sensor (18), described cleaning solution baffle-box (15) bottom outlet by the road with it is described
The level-one aeration tank (20) of ship tail gas washing system communicate；
The ship tail gas washing system includes dynamic wave scrubbing tower (3), in the dynamic wave scrubbing tower (3) from top to bottom successively
It is the second drip separator (161), spray spout (29), cavity, level-one aeration tank (20), the one of the dynamic wave scrubbing tower (3)
There is single reverse jet tube in side, and the upper port of the single reverse jet tube is communicated through flue gas flow meter (21) with the tail gas input channel of ship,
The tail gas input channel is communicated with the waste heat boiler (4), oil burning boiler exhaust gas (35) respectively, the waste heat boiler (4)
It is communicated with engine exhaust (34), exhaust header (1), is successively the first dynamic wave from top to bottom in the single reverse jet tube
Big nozzle (28) and the big nozzle of the second dynamic wave (281), the level-one aeration tank (20) are aerated neutralization pond through pipeline and second level
(6) it communicates, the second air blower of top (171) of the dynamic wave scrubbing tower (3) is communicated with atmosphere, in the second air blower
(171) output pipe is equipped with the second sulfide concentration monitoring sensor (181)；
The washing water supply and processing system include mixing tank (5), second level aeration neutralization pond (6), lye tank (7), solid-liquid
Separation system (8), alkaline stream meter, washing fluid supply pump, sea water supply pump (24), lye supply pump and discharging of waste liquid pump
(26), the lye tank (7) is through the first lye supply pump (25), the first alkaline stream meter (22) and the mixing tank (5)
It communicates, the mixing tank (5) is through the first washing fluid supply pump (23) and the big nozzle of the first dynamic wave (28) and the second power
The big nozzle of wave (281) communicates, which communicates through the second washing fluid supply pump (231) with the spray spout (29),
The mixing tank (5) is communicated through third washing fluid supply pump (232) with dynamic wave nozzle (27), and the lye tank (7) is through second
Lye supply pump (251), the second alkaline stream meter (221) are communicated with second level aeration neutralization pond (6), in second level aeration
With the delivery outlet of pond (6) through the solid-liquid separation system (8), discharging of waste liquid pump (26) output, third air blower (172) it is defeated
Outlet is communicated with the level-one aeration tank (20), second level aeration neutralization pond (6) respectively through pipeline.
2. marine diesel tail gas according to claim 1 and EGR exhaust combine washing system, it is characterised in that: described
The big nozzle of the first dynamic wave (28) and the big nozzle of the second dynamic wave (281) spraying cleaning solution direction it is opposite with airflow direction.
3. marine diesel tail gas according to claim 1 and EGR exhaust combine washing system, it is characterised in that: it is described
Array dynamic wave scrubber (14) be assembled into reverse jet tube by the two boards (50) at the both ends of the reverse jet tube (51) of multiple parallel connections
Array；Cleaning solution intake line is made of a general pipeline (52) and more branch pipes (53) and communicates with every reverse jet tube (51), often
Root branch pipe is equipped with several dynamic wave nozzles, and every reverse jet tube (51) all contains level-one or double-stage nozzle (54), spraying cleaning solution
Direction is upward, opposite with airflow direction；
In every reverse jet tube (51) in set level-one or double-stage nozzle (54), it is also possible to two array column dynamic wave scrubbers series connection and
Two sections of ingredient absorptions.
4. marine diesel tail gas according to claim 1 and EGR exhaust combine washing system, it is characterised in that: described
Washing fluid supply pump be variable frequency pump, the flow of cleaning solution is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880074.4U CN208212902U (en) | 2017-12-28 | 2017-12-28 | Marine diesel tail gas and EGR exhaust combine washing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880074.4U CN208212902U (en) | 2017-12-28 | 2017-12-28 | Marine diesel tail gas and EGR exhaust combine washing system |
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| Publication Number | Publication Date |
|---|---|
| CN208212902U true CN208212902U (en) | 2018-12-11 |
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ID=64533061
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|---|---|---|---|
| CN201721880074.4U Active CN208212902U (en) | 2017-12-28 | 2017-12-28 | Marine diesel tail gas and EGR exhaust combine washing system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107930398A (en) * | 2017-12-28 | 2018-04-20 | 中船动力研究院有限公司 | Marine diesel oil tail gas and EGR exhaust joint washing system |
| CN110714825A (en) * | 2019-10-24 | 2020-01-21 | 中船动力研究院有限公司 | Exhaust and scavenging system of two-stroke diesel engine |
| CN114294078A (en) * | 2022-01-04 | 2022-04-08 | 江南造船(集团)有限责任公司 | Marine diesel engine exhaust gas cleaning system |
-
2017
- 2017-12-28 CN CN201721880074.4U patent/CN208212902U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107930398A (en) * | 2017-12-28 | 2018-04-20 | 中船动力研究院有限公司 | Marine diesel oil tail gas and EGR exhaust joint washing system |
| CN110714825A (en) * | 2019-10-24 | 2020-01-21 | 中船动力研究院有限公司 | Exhaust and scavenging system of two-stroke diesel engine |
| CN110714825B (en) * | 2019-10-24 | 2021-12-07 | 中船动力研究院有限公司 | Exhaust and scavenging system of two-stroke diesel engine |
| CN114294078A (en) * | 2022-01-04 | 2022-04-08 | 江南造船(集团)有限责任公司 | Marine diesel engine exhaust gas cleaning system |
| CN114294078B (en) * | 2022-01-04 | 2023-06-16 | 江南造船(集团)有限责任公司 | Marine diesel engine exhaust gas cleaning system |
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