CN110585877B - Ship exhaust gas desulfurization system - Google Patents
Ship exhaust gas desulfurization system Download PDFInfo
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- CN110585877B CN110585877B CN201910805933.0A CN201910805933A CN110585877B CN 110585877 B CN110585877 B CN 110585877B CN 201910805933 A CN201910805933 A CN 201910805933A CN 110585877 B CN110585877 B CN 110585877B
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- alkali liquor
- pipe
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 75
- 230000023556 desulfurization Effects 0.000 title claims abstract description 75
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 238000005406 washing Methods 0.000 claims abstract description 59
- 239000003513 alkali Substances 0.000 claims abstract description 45
- 239000013535 sea water Substances 0.000 claims abstract description 42
- 238000001816 cooling Methods 0.000 claims abstract description 41
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003546 flue gas Substances 0.000 claims abstract description 33
- 239000002912 waste gas Substances 0.000 claims abstract description 18
- 238000009423 ventilation Methods 0.000 claims abstract description 15
- 239000003112 inhibitor Substances 0.000 claims abstract description 13
- 239000000779 smoke Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 44
- 239000000498 cooling water Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000001502 supplementing effect Effects 0.000 claims description 8
- 239000013505 freshwater Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000916 dilatatory effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000002637 fluid replacement therapy Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a ship waste gas desulfurization system which comprises a washing tower, a seawater circulation system and an alkali liquor circulation system, wherein an air inlet, a cooling layer, a first ventilation liquid inhibitor, a first desulfurization layer, a second ventilation liquid inhibitor, a second desulfurization layer, a demisting layer and an air outlet are sequentially arranged in the washing tower from bottom to top, flue gas discharged by a ship engine is connected with the air inlet through a smoke exhaust pipeline, the seawater circulation system and the alkali liquor circulation system are respectively connected with the first desulfurization layer and the second desulfurization layer, and the cooling layer is connected with an independent seawater supply pipeline. According to the invention, the function of the condensing tower is transferred to the inside of the washing tower to form a cooling layer, so that the occupied space of equipment is saved; the seawater circulation system and the alkali liquor circulation system are respectively connected with the first desulfurization layer and the second desulfurization layer, and can select various washing combination modes according to the emission requirements of ship running areas, so that the carrying amount of alkali substances is reduced as much as possible, and the energy consumption of ships is reduced.
Description
Technical Field
The invention relates to the technical field of waste gas desulfurization, in particular to a ship waste gas desulfurization system.
Background
As the ship transportation industry of the global industry, operating the SO2 pollutants in the exhaust gas of ships severely affects the atmosphere in many areas of the world. To prevent atmospheric pollution by ship exhaust SO2, international Maritime Organization (IMO) legislation and states: since 2015, fuel sulfur content of ships sailing in sulfur emission control zone must not exceed 0.1% (mass fraction); by 2020, a ship sailing worldwide except for the sulfur emission control zone should not have fuel sulfur content exceeding 0.5% (mass fraction).
The existing ship waste gas desulfurization system generally needs to cool waste gas firstly and then enters a washing tower for washing desulfurization treatment, the waste gas cooling process generally adopts a condensing tower for cooling, the desulfurization system is complex and occupies a large space, the effective space of a ship is very limited, and the installation of the desulfurization system on the ship tends to occupy the carrying space of the ship, so that the economy of the ship is further reduced, and the desulfurization system with a simple system and a small occupied space is more applicable.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the marine exhaust gas desulfurization system which has a simple structure and small occupied space and does not influence the desulfurization effect.
In order to achieve the above purpose, the technical scheme of the invention is to design a ship waste gas desulfurization system, which comprises a washing tower, a seawater circulation system and an alkali liquor circulation system, wherein an air inlet, a cooling layer, a first ventilation liquid inhibitor, a first desulfurization layer, a second ventilation liquid inhibitor, a second desulfurization layer, a mist removal layer and an air outlet are sequentially arranged in the washing tower from bottom to top, the flue gas discharged by a ship engine is connected with the air inlet through a flue gas pipeline, the seawater circulation system and the alkali liquor circulation system are respectively connected with the first desulfurization layer and the second desulfurization layer, and the cooling layer is connected with an independent seawater supply pipeline. According to the ship exhaust gas desulfurization system, the functions of the independently arranged exhaust gas condensing towers are transferred to the inside of the washing tower, so that a cooling layer at the bottom of the washing tower is formed, the cooling function of exhaust gas is realized, and the occupied space of equipment is saved; the first ventilation liquid inhibitor and the second ventilation liquid inhibitor are arranged in the washing tower, waste gas in the washing tower can pass through from bottom to top, but washing liquid of each desulfurization layer can not fall to the lower section, so that the washing of each layer is completely independent; the seawater circulation system and the alkali liquor circulation system are both connected with the first desulfurization layer and the second desulfurization layer, can be selected according to the emission requirements of the ship running area, and the two desulfurization layers are washed by seawater, or the two desulfurization layers are washed by alkali liquor, or the two desulfurization layers are washed by one layer of seawater and one layer of alkali liquor, so that various washing combination modes are provided for the desulfurization of the ship exhaust gas, the carrying amount of alkali substances is reduced as much as possible, and the energy consumption of the ship is reduced.
In order to further improve the cooling effect of the exhaust gas, the preferred technical scheme is that a flue gas cooler is further arranged between the flue gas exhaust pipeline and the air inlet.
The further preferable technical scheme is that the flue gas cooler is a venturi cooling pipe, the wall of a shrinkage pipe of the venturi cooling pipe is communicated with a smoke exhaust pipeline, and the orifice of a dilating pipe of the venturi cooling pipe is connected with the air inlet. A venturi cooling pipe is arranged on the flue gas inlet pipe, and the cooling effect of the venturi pipe on gas is utilized to cool the flue gas; the venturi tube has small volume and simple structure, can be directly connected with the air inlet of the washing tower, and occupies small space; the flue gas pipeline is communicated with the pipe wall of the shrinkage pipe of the Venturi cooling pipe, the flue gas pipeline enters the shrinkage pipe from the side, the rotating airflow of flue gas is formed in the shrinkage pipe, the flue gas collides with the pipe wall of the shrinkage pipe, and partial particles in partial flue gas are accumulated on the pipe wall of the shrinkage pipe, so that partial particles in the flue gas can be removed in advance, and the treatment difficulty of desulfurization washing liquid after subsequent washing is reduced.
The further preferable technical scheme is that the cooling layer comprises a plurality of spray heads which are parallel to each other and the spraying direction is vertical to the upward direction. The spraying direction is upward, the upward spraying of the cooling water is consistent with the movement direction of the flue gas, the cooling water and the flue gas move together for a longer time and a longer path, and the contact time of heat exchange between the cooling water and the flue gas is prolonged; meanwhile, the part of the cooling water sprayed upwards, which is not evaporated into steam, falls downwards, and the temperature of the part of the cooling water is reduced after the part of the cooling water is evaporated by high-temperature flue gas and moves upwards to the position of the first ventilation liquid inhibitor, the cooling water condenses and falls, and the cooling water exchanges heat with the flue gas again in the falling process of the cooling water, so that the cooling efficiency of the flue gas is improved.
The further preferable technical scheme is that a cooling water outlet is further arranged below the washing tower and communicated with the side wall of the shrinkage tube of the Venturi cooling tube through a pipeline. After heat exchange is carried out on cooling water sprayed out by the cooling layer and high-temperature waste gas, the waste gas enters the first desulfurization layer along with the waste gas to the position of the first ventilation liquid inhibitor, the waste gas is condensed by the ventilation liquid inhibitor and then falls to the bottom of the washing tower to be converged with the non-evaporated seawater, and then enters the contracted pipe section of the venturi tube from the cooling water outlet to carry out heat exchange again with the waste gas newly entering the venturi tube, so that the consumption of cooling seawater can be reduced.
The waste gas after washing through the two desulfurization layers contains liquid drops with the particle size of about 0.1-5000 microns, the liquid drops not only contain moisture, but also contain sulfuric acid, sulfate, sulfur dioxide and the like, serious pollution is caused to the atmosphere environment by direct discharge, the demister can only treat the liquid drops with the particle size of more than 50 microns, but the smaller liquid drops are difficult to remove by a general method, and in order to further remove the liquid drops in the gas after washing and purifying, the waste gas washing and purifying device further preferably comprises a first heat exchanger, a humidifier and a tail gas separator, wherein the humidifier and the tail gas separator are sequentially arranged outside the air outlet, the first heat exchanger is respectively connected with a smoke exhaust pipeline and a sea water pipeline, and the sea water pipeline is connected with the humidifier. The gas purified by the washing tower enters the humidifier, the seawater is evaporated after passing through the heat exchanger, the evaporated steam enters the humidifier, supersaturated steam is contained in the humidifier, small liquid drops containing desulfurization waste liquid are subjected to moisture absorption growth in the humidifier, the liquid drops with the enlarged moisture absorption growth are separated in the tail gas separator, and the purified gas is discharged to the atmosphere.
The further preferable technical scheme is that the tail gas separator is connected with a water outlet pipeline of the seawater circulating system. The sulfur-containing waste liquid separated in the tail gas separator is connected with a water outlet pipeline of the seawater circulating system, and is selected to be directly discharged into the sea or discharged into a sewage tank according to the discharge standard of a ship running area.
The further preferable technical scheme is that an electromagnetic flowmeter is arranged on a seawater inlet pipeline connected with the seawater circulating system and the washing tower, and an electromagnetic flowmeter is arranged on an alkali liquid inlet pipeline connected with the alkali liquid circulating system and the washing tower. The washing tower is internally provided with a double-layer washing layer, and electromagnetic flow meters are respectively arranged on the liquid inlet pipelines, so that the amount of washing liquid entering each washing layer can be monitored and controlled, the liquid-gas ratio of each washing layer is further controlled, and the requirements of maximum washing effect and minimum energy consumption are met in a liquid-gas ratio gradient washing mode.
In order to perform gradient washing by selecting different alkali liquor PH values for each desulfurization layer under the condition that two desulfurization layers are washed by alkali liquor, the further preferred technical scheme is that the alkali liquor circulation system comprises an alkali liquor storage tank, a water inlet pipe and a liquid outlet pipe are arranged on the alkali liquor storage tank, and the liquid outlet pipe is connected with the first desulfurization layer and the second desulfurization layer through a first alkali liquor pipeline and a second alkali liquor pipeline respectively; the first alkali liquor pipeline is sequentially provided with a first electromagnetic valve, a first electromagnetic flowmeter and a first circulating pump, the second alkali liquor pipeline is sequentially provided with a second electromagnetic valve, a second electromagnetic flowmeter and a second circulating pump, and a first liquid supplementing system is further arranged on a pipeline connected between the first electromagnetic flowmeter and the first circulating pump; and a second fluid supplementing system is further arranged on a pipeline connected between the second electromagnetic flowmeter and the second circulating pump. The alkaline liquid pipelines of the two layers of desulfurization layers are respectively provided with a liquid supplementing system, different liquids can be supplemented into the alkaline liquid pipelines according to the requirements, and the alkaline liquid sucked from the shared alkaline liquid storage tank is subjected to the re-allocation of different PH values so as to adapt to different requirements, and the gradient washing effect is truly realized.
In a further preferred technical scheme, the water inlet pipe is connected with a seawater supply device or a fresh water supply device. The water inlet pipe of the alkali liquor storage tank is connected with the fresh water supply equipment or the sea water supply equipment, alkali substances can be regulated by selecting different volumes, and the fresh water consumption of the ship during sea navigation is saved.
The invention has the advantages and beneficial effects that: the marine exhaust gas desulfurization system has the characteristics of simple structure and small occupied space. According to the ship exhaust gas desulfurization system, the functions of the independently arranged exhaust gas condensing towers are transferred to the inside of the washing tower, so that a cooling layer at the bottom of the washing tower is formed, the cooling function of exhaust gas is realized, and the occupied space of equipment is saved; the first ventilation liquid inhibitor and the second ventilation liquid inhibitor are arranged in the washing tower, waste gas in the washing tower can pass through from bottom to top, but washing liquid of each desulfurization layer can not fall to the lower section, so that the washing of each layer is completely independent; the seawater circulation system and the alkali liquor circulation system are both connected with the first desulfurization layer and the second desulfurization layer, can be selected according to the emission requirements of the ship running area, and the two desulfurization layers are washed by seawater, or the two desulfurization layers are washed by alkali liquor, or the two desulfurization layers are washed by one layer of seawater and one layer of alkali liquor, so that various washing combination modes are provided for the desulfurization of the ship exhaust gas, the carrying amount of alkali substances is reduced as much as possible, and the energy consumption of the ship is reduced. A venturi cooling pipe is arranged on the flue gas inlet pipe, and the cooling effect of the venturi pipe on gas is utilized to cool the flue gas; the venturi tube has small volume and simple structure, can be directly connected with the air inlet of the washing tower, and occupies small space; the flue gas pipeline is communicated with the pipe wall of the shrinkage pipe of the Venturi cooling pipe, the flue gas pipeline enters the shrinkage pipe from the side, the rotating airflow of flue gas is formed in the shrinkage pipe, the flue gas collides with the pipe wall of the shrinkage pipe, and partial particles in partial flue gas are accumulated on the pipe wall of the shrinkage pipe, so that partial particles in the flue gas can be removed in advance, and the treatment difficulty of desulfurization washing liquid after subsequent washing is reduced. The gas purified by the washing tower enters the humidifier, the seawater is evaporated after passing through the heat exchanger, the evaporated steam enters the humidifier, supersaturated steam is contained in the humidifier, small liquid drops containing desulfurization waste liquid are subjected to moisture absorption growth in the humidifier, the liquid drops with the enlarged moisture absorption growth are separated in the tail gas separator, and the gas is discharged to the atmosphere. The washing tower is internally provided with a double-layer washing layer, and electromagnetic flow meters are respectively arranged on the liquid inlet pipelines, so that the amount of washing liquid entering each washing layer can be monitored and controlled, the liquid-gas ratio of each washing layer is further controlled, and the requirements of maximum washing effect and minimum energy consumption are met in a liquid-gas ratio gradient washing mode. The alkaline liquid pipelines of the two layers of desulfurization layers are respectively provided with a liquid supplementing system, different liquids can be supplemented into the alkaline liquid pipelines according to the requirements, and the alkaline liquid sucked from the shared alkaline liquid storage tank is subjected to the re-allocation of different PH values so as to adapt to different requirements, and the gradient washing effect is truly realized.
Drawings
FIG. 1 is a schematic diagram of the marine exhaust gas desulfurization system of the present invention.
In the figure: 1. a cooling layer; 2. a first vent-to-liquid blocker; 3. a first desulfurization layer; 4. a second vent-to-liquid blocker; 5. a second desulfurization layer; 6. a defogging layer; 7. a marine engine; 8. a venturi cooling tube; 9. an ash bucket; 10. a cooling water outlet; 11. a first heat exchanger; 12. a humidifier; 13. a tail gas separator; 14. an alkali liquor storage tank; 15. a first electromagnetic valve; 16. a first electromagnetic flowmeter; 17. a first circulation pump; 18. a second electromagnetic valve; 19. a second electromagnetic flowmeter; 20. a second circulation pump; 21. a first fluid replacement system; 22. a second fluid replacement system; 23. a third electromagnetic valve; 24. a third electromagnetic flowmeter; 25. a fourth electromagnetic valve; 26. a fourth electromagnetic flowmeter; 27. seawater supply equipment; 28. fresh water supply equipment.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1, the invention relates to a ship waste gas desulfurization system, which comprises a washing tower, a seawater circulation system and an alkali liquor circulation system, wherein an air inlet, a cooling layer 1, a first ventilation liquid resistor 2, a first desulfurization layer 3, a second ventilation liquid resistor 4, a second desulfurization layer 5, a demisting layer 6 and an air outlet are sequentially arranged in the washing tower from bottom to top, the flue gas discharged by a ship engine 7 is connected with the air inlet through a flue gas discharge pipeline, the seawater circulation system and the alkali liquor circulation system are respectively connected with the first desulfurization layer and the second desulfurization layer, and the cooling layer is connected with an independent seawater supply pipeline.
And a flue gas cooler is further arranged between the smoke exhaust pipeline and the air inlet, the flue gas cooler is a Venturi cooling pipe 8, the wall of a shrinkage pipe of the Venturi cooling pipe is communicated with the smoke exhaust pipeline, and the orifice of a dilating pipe of the Venturi cooling pipe is connected with the air inlet. Meanwhile, in order to facilitate the collection of smoke dust collected by the shrinkage tube, the Venturi cooling tube can be vertically arranged, the shrinkage tube is arranged below, a cleaning component can be arranged in the shrinkage tube, and an ash bucket 9 is arranged below the shrinkage tube. The cleaning component regularly deashes the inner wall of the shrinkage tube, and the cleared smoke dust falls into the ash bucket below.
And a cooling water outlet 10 is also arranged below the washing tower and is communicated with the side wall of the shrinkage tube of the Venturi cooling tube through a pipeline.
The device further comprises a first heat exchanger 11, a humidifier 12 and a tail gas separator 13, wherein the humidifier and the tail gas separator are sequentially arranged outside the air outlet, the first heat exchanger is respectively connected with a smoke exhaust pipeline and a sea water pipeline, and the sea water pipeline is connected with the humidifier.
The tail gas separator is connected with a water outlet pipeline of the seawater circulating system.
The alkali liquor circulation system comprises an alkali liquor storage tank 14, wherein a water inlet pipe and a liquid outlet pipe are arranged on the alkali liquor storage tank, and the liquid outlet pipe is connected with a first desulfurization layer and a second desulfurization layer through a first alkali liquor pipeline and a second alkali liquor pipeline respectively; the first alkali liquor pipeline is sequentially provided with a first electromagnetic valve 15, a first electromagnetic flowmeter 16 and a first circulating pump 17, the second alkali liquor pipeline is sequentially provided with a second electromagnetic valve 18, a second electromagnetic flowmeter 19 and a second circulating pump 20, and a pipeline connected between the first electromagnetic flowmeter and the first circulating pump is further provided with a first liquid supplementing system 21; and a second fluid supplementing system 22 is further arranged on a pipeline connected between the second electromagnetic flowmeter and the second circulating pump.
The seawater circulating system is respectively provided with a third electromagnetic valve 23, a third electromagnetic flowmeter 24, a fourth electromagnetic valve 25 and a fourth electromagnetic flowmeter 26 on a seawater inlet pipeline connected with the first desulfurization layer and the second desulfurization layer.
The inlet pipe is connected to a seawater supply 27 or to a fresh water supply 28.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (6)
1. The marine waste gas desulfurization system is characterized by comprising a washing tower, a seawater circulation system and an alkali liquor circulation system, wherein an air inlet, a cooling layer, a first ventilation liquid inhibitor, a first desulfurization layer, a second ventilation liquid inhibitor, a second desulfurization layer, a demisting layer and an air outlet are sequentially arranged in the washing tower from bottom to top;
a smoke cooler is arranged between the smoke exhaust pipeline and the air inlet; the flue gas cooler is a Venturi cooling pipe, the pipe wall of a shrinkage pipe of the Venturi cooling pipe is communicated with a smoke exhaust pipeline, and the pipe orifice of a expansion pipe of the Venturi cooling pipe is connected with the air inlet;
the desulfurization system further comprises a first heat exchanger, a humidifier and a tail gas separator, wherein the humidifier and the tail gas separator are sequentially arranged outside the gas outlet, the first heat exchanger is respectively connected with a smoke exhaust pipeline and a seawater pipeline, and the seawater pipeline is connected with the humidifier;
the alkali liquor circulation system comprises an alkali liquor storage tank, a water inlet pipe and a liquid outlet pipe are arranged on the alkali liquor storage tank, and the liquid outlet pipe is connected with the first desulfurization layer and the second desulfurization layer through a first alkali liquor pipeline and a second alkali liquor pipeline respectively; the first alkali liquor pipeline is sequentially provided with a first electromagnetic valve, a first electromagnetic flowmeter and a first circulating pump, the second alkali liquor pipeline is sequentially provided with a second electromagnetic valve, a second electromagnetic flowmeter and a second circulating pump, and a first liquid supplementing system is further arranged on a pipeline connected between the first electromagnetic flowmeter and the first circulating pump; and a second fluid supplementing system is further arranged on a pipeline connected between the second electromagnetic flowmeter and the second circulating pump.
2. The marine vessel exhaust gas desulfurization system of claim 1, wherein the cooling layer comprises a plurality of spray heads that are parallel to each other and spray direction is vertically upward.
3. The marine vessel exhaust gas desulfurization system of claim 2, wherein a cooling water outlet is further provided below the scrubber, the cooling water outlet being in communication with the converging tube side wall of the venturi cooling tube via a conduit.
4. A marine exhaust gas desulfurization system according to claim 3, wherein the tail gas separator is connected to an outlet pipeline of a seawater circulation system.
5. The marine vessel exhaust gas desulfurization system according to any one of claims 1 to 4, wherein an electromagnetic flowmeter is provided on a seawater intake line to which the seawater circulation system is connected to the scrubber, and an electromagnetic flowmeter is provided on an alkaline intake line to which the alkaline circulation system is connected to the scrubber.
6. The marine vessel exhaust gas desulfurization system of claim 5, wherein the water inlet pipe is connected to a seawater supply or to a fresh water supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910805933.0A CN110585877B (en) | 2019-08-29 | 2019-08-29 | Ship exhaust gas desulfurization system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910805933.0A CN110585877B (en) | 2019-08-29 | 2019-08-29 | Ship exhaust gas desulfurization system |
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| CN110585877A CN110585877A (en) | 2019-12-20 |
| CN110585877B true CN110585877B (en) | 2023-12-26 |
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| CN111408254B (en) * | 2020-04-14 | 2024-07-09 | 镇江赛尔尼柯自动化股份有限公司 | Ship waste gas washing system and control method |
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| CN211159243U (en) * | 2019-08-29 | 2020-08-04 | 中船澄西船舶修造有限公司 | Ship exhaust gas desulfurization system |
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| CN108939756A (en) * | 2018-06-01 | 2018-12-07 | 东南大学 | Ship tail gas desulphurization system |
| CN209138354U (en) * | 2018-10-26 | 2019-07-23 | 上海三卿环保科技有限公司 | Ship tail gas desulphurization system |
| CN109821366A (en) * | 2019-03-28 | 2019-05-31 | 威海市正大环保设备股份有限公司 | A kind of engine of boat and ship flue gas desulphurization unit and method |
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| CN110585877A (en) | 2019-12-20 |
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