CN114517723A - Marine desulfurization, denitrification and dedusting integrated device and method - Google Patents

Marine desulfurization, denitrification and dedusting integrated device and method Download PDF

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Publication number
CN114517723A
CN114517723A CN202210202292.1A CN202210202292A CN114517723A CN 114517723 A CN114517723 A CN 114517723A CN 202210202292 A CN202210202292 A CN 202210202292A CN 114517723 A CN114517723 A CN 114517723A
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Prior art keywords
seawater
absorption tower
desulfurization
treatment
denitrification
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CN202210202292.1A
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Chinese (zh)
Inventor
宋华剑
闫海鹏
张成杰
杜谦
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Weihai Zhengda Environment Equipment Co ltd
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Weihai Zhengda Environment Equipment Co ltd
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Priority to CN202210202292.1A priority Critical patent/CN114517723A/en
Publication of CN114517723A publication Critical patent/CN114517723A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—Nitrogen oxides
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1481—Removing sulfur dioxide or sulfur trioxide
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1493—Selection of liquid materials for use as absorbents
    • 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
    • B01D53/14—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 by absorption
    • B01D53/18—Absorbing units; Liquid distributors therefor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/085—Sulfur or sulfur oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/10—Inorganic absorbents
    • B01D2252/103—Water
    • B01D2252/1035—Sea water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a desulfurization, denitrification and dust removal integrated device and method for a ship, which comprises an exhaust pipe connected with a ship power device, wherein the exhaust pipe is connected with a waste gas conveying pipe through a denitration processor, the outer side wall of the exhaust pipe is provided with a heat exchange gas ring, one side of the heat exchange gas ring is provided with a high-pressure water pump, one end of the high-pressure water pump is connected with the heat exchange gas ring, the other end of the high-pressure water pump is provided with an absorption tower, a dust removal part is arranged in the absorption tower, and the bottom of the absorption tower is provided with a seawater treatment part. The invention takes seawater as an absorbent, thereby saving fresh water resources and mineral resources; the absorbed SO2 is converted into natural sulfate in the seawater, and can be directly treated and discharged into the sea, SO that the problems of waste treatment and the like do not exist, and the emission of SO2 can be reduced to a certain extent; the construction and operation cost is low, and the operation is convenient; the desulfurization efficiency is higher, and the treatment of most harmful substances in the waste gas can be realized, so that the waste gas is ensured to meet the discharge standard.

Description

Marine desulfurization, denitrification and dedusting integrated device and method
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a desulfurization, denitrification and dedusting integrated device and method for a ship.
Background
With the development of global economy, the demand of all countries in the world for shipping is increased, and nearly 90% of international trade in the world is completed by shipping, so that a large amount of sulfur oxides and nitrogen oxides discharged by ships cannot be ignored. The ship flue gas contains a large amount of atmospheric pollutants, wherein the majority of the atmospheric pollutants are particulate matters, SO2, NOx, CO and the like; the atmospheric pollutants have great harm to human beings, animals, plants, crops and ecological environment; in the face of increasingly severe pollution conditions, the emission standards of ship smoke at home and abroad are increasingly strict;
a seawater-method desulfurizing process for removing sulfur dioxide from fume by use of the basicity of natural seawater features that seawater is used as desulfurizing agent, and in desulfurizing absorption tower, a great deal of seawater is sprayed to wash the fume in absorption tower, where the sulfur dioxide is removed by seawater, and the purified fume is demisted by demister and heated by fume heat exchanger and then discharged. Mixing the seawater after absorbing sulfur dioxide with seawater in an aeration tank, carrying out aeration treatment, wherein unstable sulfite is oxidized into stable sulfate, and discharging the seawater into the sea after indexes such as PH value, COD (chemical oxygen demand) and the like of the seawater are restored to the seawater quality standard, wherein the seawater is often applied to a construction site near the sea;
The existing treatment mode is high in cost, produced treated substances cannot be discharged, the waste gas is stored on the ship and can be treated after the ship arrives at a port, and thus the treatment of the waste gas is very inconvenient for ocean-going ships and resources cannot be stored and utilized, so that the integrated device and the method for desulfurization, denitrification and dust removal for the ship are provided.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a desulfurization, denitrification and dedusting integrated device and method for a ship.
In order to achieve the purpose, the invention adopts the following technical scheme:
the marine desulfurization, denitrification and dust removal integrated device comprises an exhaust pipe connected with a marine power device, wherein the exhaust pipe is connected with a waste gas conveying pipe through a denitration processor, the outer side wall of the exhaust pipe is provided with a heat exchange gas ring, one side of the heat exchange gas ring is provided with a high-pressure water suction pump, one end of the high-pressure water suction pump is connected with the heat exchange gas ring, an extraction pipe extending into seawater is arranged on the heat exchange gas ring, the other end of the high-pressure water suction pump is provided with an absorption tower, a dust removal part is arranged in the absorption tower, a seawater treatment part is arranged at the bottom of the absorption tower, a discharge pipe is arranged at the top of the absorption tower, and a draught fan is arranged on the discharge pipe.
Preferably, the seawater treatment component comprises a reflux pool arranged at the bottom of the absorption tower, the reflux pool is communicated with the absorption tower, the bottom of the reflux pool is connected with an exposure pool through a collecting pipe, and a seawater inlet pipe is arranged at the bottom of the exposure pool.
Preferably, the dust removal part comprises a filter screen arranged in the absorption tower, the outer side wall of the absorption tower is provided with a water storage cover, and the water storage cover is connected with the high-pressure water suction pump through a pipe fitting.
Preferably, two support net racks which are distributed up and down are arranged in the absorption tower, spray pipes are spirally distributed in the support net racks, a plurality of spray holes are formed in the bottoms of the spray pipes, and the spray pipes are communicated with the water storage cover.
Preferably, one end of the induced draft fan is connected with the exhaust pipe, and the other end of the induced draft fan is connected with the exhaust pipe.
The integrated desulfurization, denitrification and dedusting method for the ship comprises the following steps of:
s1, conveying the waste gas generated by the engine through an exhaust pipe, and simultaneously pumping the seawater into a heat exchange air ring sleeved outside the exhaust pipe through a high-pressure water pump to realize heat exchange;
s2, carrying out denitration treatment on the waste gas discharged by the exhaust pipe through an SNCR device, conveying the gas subjected to denitration treatment into an absorption tower, simultaneously discharging the heated seawater into the absorption tower through the action of a high-pressure water pump, spraying the seawater in the absorption tower in a mist form, and carrying out desulfurization treatment on the waste gas conveyed into the absorption tower by utilizing the seawater.
S3, after desulfurization treatment of the waste gas by the absorption tower, discharging the waste gas through the chimney pipe under the action of the induced draft fan after the waste gas reaches the standard;
s4, aerating the seawater generated after desulfurization treatment in the exposure pool and the seawater, and discharging the seawater into the sea after each index meets the discharge standard.
Preferably, the seawater desulfurized in S3 absorbs a large amount of sulfur dioxide, and is discharged into an exposure tank to be mixed with a large amount of seawater, and then is aerated, wherein unstable sulfite is oxidized into stable sulfate, and the PH value and COD of the seawater are restored to the seawater quality standard and then discharged into the sea.
Preferably, a filter screen for performing dust removal treatment on the exhaust gas is arranged in the absorption in S2.
Compared with the prior art, the invention has the beneficial effects that:
the device is arranged on the ship body, and seawater is used as an absorbent, so that fresh water resources and mineral resources are saved; the absorbed SO2 is converted into natural component sulfate in the seawater, and can be directly treated and discharged into the sea, SO that the problems of waste treatment and the like do not exist, and the emission of SO2 can be reduced to a certain extent; the problem of scaling and blocking does not exist, any solid is not generated, the construction and operation cost is low, and the operation is convenient; the desulfurization efficiency is higher, and the treatment of most harmful substances in the waste gas can be realized, so that the waste gas is ensured to meet the discharge standard.
Drawings
FIG. 1 is a schematic structural diagram of a main body of the integrated desulfurization, denitrification and dedusting device for a ship provided by the invention;
FIG. 2 is a schematic structural diagram of a spray pipe in the integrated desulfurization, denitrification and dedusting device for a ship provided by the invention;
FIG. 3 is a schematic flow structure diagram of the integrated desulfurization, denitrification and dust removal method for a ship provided by the invention.
In the figure: the system comprises an exhaust pipe 1, a denitration processor 2, a heat exchange air ring 3, a high-pressure water pump 4, an extraction pipe 5, an absorption tower 6, a discharge pipe 7, an induced draft fan 8, a reflux pool 9, an exposure pool 10, a seawater inlet pipe 11, a filter screen 12, a water storage cover 13, a spray pipe 14 and an exhaust flue pipe 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "fitted/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Referring to fig. 1-3, the integrated device and method for desulfurization, denitrification and dust removal for ships comprises an exhaust pipe 1 connected with a ship power device, the exhaust pipe 1 is connected with a waste gas conveying pipe through a denitrification processor 2, the denitrification processor 2 is a prior art means, specifically, a SNCR process is used for processing, the outer side wall of the exhaust pipe 1 is provided with a heat exchange air ring 3, one side of the heat exchange air ring 3 is provided with a high-pressure water pump 4, one end of the high-pressure water pump 4 is connected with the heat exchange air ring 3, the heat exchange air ring 3 is provided with an extraction pipe 5 extending into seawater, the other end of the high-pressure water pump 4 is provided with an absorption tower 6, a dust removal part is arranged in the absorption tower 6, the dust removal part 6 mainly comprises a filter screen, the filter screen mainly filters gas impurities contained in the waste gas after seawater absorption again, the absorption of the seawater can realize the absorption of excessive impurities therein, the bottom of the absorption tower 6 is provided with a seawater treatment part, the top of the absorption tower 6 is provided with a discharge pipe 7, and the discharge pipe 7 is provided with an induced draft fan 8.
Further, the seawater treatment part comprises a reflux pool 9 arranged at the bottom of the absorption tower 6, the reflux pool 9 is communicated with the absorption tower 6, the bottom of the reflux pool 9 is connected with an exposure pool 10 through a collecting pipe, and a seawater inlet pipe 11 is arranged at the bottom of the exposure pool 10.
Furthermore, the dust removal part comprises a filter screen 12 arranged in the absorption tower 6, a water storage cover 13 is arranged on the outer side wall of the absorption tower 6, and the water storage cover 13 is connected with the high-pressure water pump 4 through a pipe fitting.
Furthermore, two support net racks which are distributed up and down are arranged in the absorption tower 6, spray pipes 14 are spirally distributed in the support net racks, a plurality of spray holes are formed in the bottoms of the spray pipes 14, the spray pipes 14 are communicated with a water storage cover 13, one end of an induced draft fan 8 is connected with an exhaust pipe 7, and the other end of the induced draft fan is connected with an exhaust smoke pipe 15.
The integrated desulfurization, denitrification and dedusting method for the ship comprises the following steps of:
s1, conveying the waste gas generated by the engine through an exhaust pipe, and simultaneously pumping the seawater into a heat exchange air ring sleeved outside the exhaust pipe through a high-pressure water pump to realize heat exchange;
s2, carrying out denitration treatment on the waste gas discharged by the exhaust pipe through an SNCR device, conveying the gas subjected to denitration treatment into an absorption tower, simultaneously discharging the heated seawater into the absorption tower through the action of a high-pressure water pump, spraying the seawater in the absorption tower in a mist form, and carrying out desulfurization treatment on the waste gas conveyed into the absorption tower by utilizing the seawater.
S3, after the waste gas is desulfurized by the absorption tower and reaches the standard, the waste gas is discharged through the chimney under the action of the induced draft fan;
s4, aerating the seawater generated after desulfurization treatment in the exposure pool and the seawater, and discharging the seawater into the sea after all indexes meet the discharge standard.
Furthermore, a large amount of sulfur dioxide is absorbed by the seawater subjected to desulfurization treatment in S3, a large amount of seawater is required to be discharged into the exposure tank to be mixed with the sulfur dioxide, then aeration treatment is performed, unstable sulfite is oxidized into stable sulfate, indexes such as the pH value and COD of the seawater are recovered to the seawater quality standard, and the seawater is discharged into the sea, and a filter screen for performing dust removal treatment on waste gas is arranged in the absorption in S2.
Seawater is used as an absorbent, so that fresh water resources and mineral resources are saved; the absorbed SO2 is converted into natural component sulfate in the seawater, SO that the problems of waste treatment and the like do not exist, and the emission of SO2 can be reduced to a certain extent; can be applied to medium-low sulfur coal; the problem of scaling and blockage does not exist; does not produce any solid; the construction and operation cost is low, and the operation is convenient; the desulfurization efficiency is higher, and the treatment of most harmful substances in the waste gas can be realized, so that the waste gas is ensured to meet the discharge standard.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. The integrated device for desulfurization, denitrification and dust removal for the ship comprises an exhaust pipe (1) connected with a ship power device, it is characterized in that the exhaust pipe (1) is connected with an exhaust gas conveying pipe through a denitration processor (2), the outer side wall of the exhaust pipe (1) is provided with a heat exchange air ring (3), one side of the heat exchange air ring (3) is provided with a high-pressure water pump (4), one end of the high-pressure water pump (4) is connected with a heat exchange air ring (3), an extraction pipe (5) extending into seawater is arranged on the heat exchange air ring (3), the other end of the high-pressure water pump (4) is provided with an absorption tower (6), a dust removal component is arranged in the absorption tower (6), the seawater desalination device is characterized in that a seawater treatment component is arranged at the bottom of the absorption tower (6), a discharge pipe (7) is arranged at the top of the absorption tower (6), and a draught fan (8) is arranged on the discharge pipe (7).
2. The integrated desulfurization, denitrification and dedusting device for the ship as claimed in claim 1, wherein the seawater treatment component comprises a reflux pool (9) arranged at the bottom of the absorption tower (6), the reflux pool (9) is communicated with the absorption tower (6), the bottom of the reflux pool (9) is connected with an exposure pool (10) through a collecting pipe, and a seawater inlet pipe (11) is arranged at the bottom of the exposure pool (10).
3. The integrated device for desulfurization, denitrification and dedusting for the ship as claimed in claim 1, wherein the dedusting component comprises a filter screen (12) arranged in the absorption tower (6), a water storage cover (13) is arranged on the outer side wall of the absorption tower (6), and the water storage cover (13) is connected with the high-pressure water pump (4) through a pipe fitting.
4. The integrated desulfurization, denitrification and dedusting device for the ship as claimed in claim 3, wherein two support net racks are arranged in the absorption tower (6) and distributed up and down, the support net racks are internally and spirally distributed with the spray pipes (14), the bottoms of the spray pipes (14) are provided with a plurality of spray holes, and the spray pipes (14) are communicated with the water storage cover (13).
5. The integrated desulfurization, denitrification and dedusting device for the ship as claimed in claim 1, wherein one end of the induced draft fan (8) is connected with the exhaust pipe (7), and the other end of the induced draft fan is connected with the exhaust pipe (15).
6. The integrated desulfurization, denitrification and dedusting method for the ship is characterized by comprising the following steps of:
s1, conveying the waste gas generated by the engine through an exhaust pipe, and simultaneously pumping the seawater into a heat exchange air ring sleeved outside the exhaust pipe through a high-pressure water pump to realize heat exchange;
s2, carrying out denitration treatment on the waste gas discharged by the exhaust pipe through an SNCR device, conveying the gas subjected to denitration treatment into an absorption tower, simultaneously discharging the heated seawater into the absorption tower under the action of a high-pressure water pump, spraying the seawater in the absorption tower in a mist form, and carrying out desulfurization treatment on the waste gas conveyed into the absorption tower by utilizing the seawater;
s3, after desulfurization treatment of the waste gas by the absorption tower, discharging the waste gas through the chimney pipe under the action of the induced draft fan after the waste gas reaches the standard;
s4, aerating the seawater generated after desulfurization treatment in the exposure pool and the seawater, and discharging the seawater into the sea after each index meets the discharge standard.
7. The integrated desulfurization, denitrification and dust removal method for the ship according to claim 6, wherein the seawater subjected to desulfurization treatment in S3 absorbs a large amount of sulfur dioxide, and is discharged into an exposure tank to be mixed with a large amount of seawater, and then is subjected to aeration treatment, wherein unstable sulfite is oxidized into stable sulfate, and the pH value, COD (chemical oxygen demand) and other indexes of the seawater are restored to the seawater quality standard and then is discharged into the sea.
8. The integrated desulfurization, denitrification and dust removal method for the ship according to claim 6, wherein a filter screen for performing dust removal treatment on the exhaust gas is arranged in the S2 absorption chamber.
CN202210202292.1A 2022-03-03 2022-03-03 Marine desulfurization, denitrification and dedusting integrated device and method Pending CN114517723A (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103007691A (en) * 2012-12-12 2013-04-03 青岛双瑞海洋环境工程股份有限公司 Method and equipment of integrally desulfurizing and denitrifying flue gas for marine gas turbine
CN203291707U (en) * 2013-06-16 2013-11-20 江苏海事职业技术学院 Seawater desulfurization system suitable for sulphur waste gas treatment of large and medium-sized ship diesel engine
WO2014156985A1 (en) * 2013-03-26 2014-10-02 バブコック日立株式会社 Seawater flue-gas desulfurization device and method for operating same
JP2015174025A (en) * 2014-03-14 2015-10-05 三菱日立パワーシステムズ株式会社 Seawater flue gas desulfurization apparatus and application method of the same
CN105498535A (en) * 2015-12-01 2016-04-20 大连海事大学 Method and device for removing nitrogen oxide in waste gas of marine diesel engine by use of sodium chlorite seawater solution
CN205760541U (en) * 2016-06-28 2016-12-07 中石化第五建设有限公司 A kind of flue gas desulfurization and denitrification device
CN109107347A (en) * 2018-08-16 2019-01-01 湖南长清蓝节能环保科技有限公司 A kind of system for desulfuration and denitration and its technique
CN109260922A (en) * 2018-11-28 2019-01-25 广东佳德环保科技有限公司 A kind of Novel flue gas desulfurization and denitrification integral tower
CN114011233A (en) * 2021-11-09 2022-02-08 浙江浙能迈领环境科技有限公司 Energy-saving and convenient-to-maintain washing tower and waste gas desulfurization treatment method
CN216741679U (en) * 2022-03-03 2022-06-14 威海市正大环保设备股份有限公司 Marine SOx/NOx control dust removal integrated device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103007691A (en) * 2012-12-12 2013-04-03 青岛双瑞海洋环境工程股份有限公司 Method and equipment of integrally desulfurizing and denitrifying flue gas for marine gas turbine
WO2014156985A1 (en) * 2013-03-26 2014-10-02 バブコック日立株式会社 Seawater flue-gas desulfurization device and method for operating same
CN203291707U (en) * 2013-06-16 2013-11-20 江苏海事职业技术学院 Seawater desulfurization system suitable for sulphur waste gas treatment of large and medium-sized ship diesel engine
JP2015174025A (en) * 2014-03-14 2015-10-05 三菱日立パワーシステムズ株式会社 Seawater flue gas desulfurization apparatus and application method of the same
CN105498535A (en) * 2015-12-01 2016-04-20 大连海事大学 Method and device for removing nitrogen oxide in waste gas of marine diesel engine by use of sodium chlorite seawater solution
CN205760541U (en) * 2016-06-28 2016-12-07 中石化第五建设有限公司 A kind of flue gas desulfurization and denitrification device
CN109107347A (en) * 2018-08-16 2019-01-01 湖南长清蓝节能环保科技有限公司 A kind of system for desulfuration and denitration and its technique
CN109260922A (en) * 2018-11-28 2019-01-25 广东佳德环保科技有限公司 A kind of Novel flue gas desulfurization and denitrification integral tower
CN114011233A (en) * 2021-11-09 2022-02-08 浙江浙能迈领环境科技有限公司 Energy-saving and convenient-to-maintain washing tower and waste gas desulfurization treatment method
CN216741679U (en) * 2022-03-03 2022-06-14 威海市正大环保设备股份有限公司 Marine SOx/NOx control dust removal integrated device

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