CN110721585A - Collision formula boats and ships sea water sweetener - Google Patents

Collision formula boats and ships sea water sweetener Download PDF

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Publication number
CN110721585A
CN110721585A CN201910899877.1A CN201910899877A CN110721585A CN 110721585 A CN110721585 A CN 110721585A CN 201910899877 A CN201910899877 A CN 201910899877A CN 110721585 A CN110721585 A CN 110721585A
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CN
China
Prior art keywords
desulfurization
bin
tail gas
seawater
outlet pipe
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Pending
Application number
CN201910899877.1A
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Chinese (zh)
Inventor
姚皓
王伟
黄建元
曹文振
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Shanghai Blue Sky Environmental Protection Technology Co Ltd
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Shanghai Blue Sky Environmental Protection Technology Co Ltd
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Priority to CN201910899877.1A priority Critical patent/CN110721585A/en
Publication of CN110721585A publication Critical patent/CN110721585A/en
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    • 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
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • 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
    • B01D53/50—Sulfur 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/30—Alkali metal compounds
    • B01D2251/304—Alkali metal compounds of sodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/606—Carbonates
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention belongs to the technical field of ship seawater desulfurization, and particularly relates to collision type ship seawater desulfurization equipment which comprises a desulfurization bin, a water inlet pipe, an air outlet pipe, an air inlet pipe and an overflow water pipe, wherein the water inlet pipe is longitudinally connected to the middle part of the upper surface of the desulfurization bin, and tail gas and seawater flow in the desulfurization bin under the matching action of a driving motor, a rotating shaft and a stirring impeller, so that the seawater can be fully contacted with the tail gas, and a better desulfurization effect is achieved; through the arrangement of the baffle, the tail gas can be guided to the right firstly, and then enters the upper side of the baffle through the left side after sufficient tail gas exists on the right side, so that the flow time of the tail gas in the desulfurization bin can be increased, and the desulfurization time and the desulfurization effect can be ensured; through the cooperation of spiral winding board, dispersion dog for the sea water is rotatory form when getting into the desulfurization storehouse, thereby makes the effect of sea water dispersion better, thereby can be better with the contact effect of tail gas.

Description

Collision formula boats and ships sea water sweetener
Technical Field
The invention relates to the technical field of ship seawater desulfurization, in particular to collision type ship seawater desulfurization equipment.
Background
The wastewater treatment is to treat the wastewater by physical, chemical and biological methods, so that the wastewater is purified, the pollution is reduced, the wastewater is recycled and reused, and water resources are fully utilized.
The sewage treatment process is an effective process method for various economic, reasonable, scientific and industrial waste water of urban domestic sewage. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like. The urban sewage treatment process is preferably determined after comprehensive technological and economic comparison according to the treatment scale, the water quality characteristics, the environmental function of the receiving water body and the local actual conditions and requirements.
The seawater flue gas desulfurization is a desulfurization process for absorbing SO2 in flue gas by using natural alkalinity of seawater. As rainwater brings alkaline substances (carbonate) of the land rock stratum into the sea, natural seawater is alkaline generally, the pH value is generally more than 7, the main components of the seawater are chloride, sulfate and a part of soluble carbonate, and the natural alkalinity is about 1.2-2.5 mmol/L in terms of bicarbonate (HCO3-), SO that the seawater has natural acid-base buffering capacity and capacity of absorbing SO 2. One basic theoretical basis for seawater desulfurization is that most of the natural sulfur is present in the ocean, sulfate is one of the main components of seawater, and most of the sulfur dioxide in the environment is finally discharged into the sea in the form of sulfate.
When the existing seawater desulfurization equipment is used, the ship tail gas is not fully contacted with seawater, so that the desulfurization of the ship tail gas is not thorough enough, the discharged tail gas is difficult to reach the emission standard, and the surrounding environment is affected.
Disclosure of Invention
The invention aims to provide collision type ship seawater desulfurization equipment, which solves the problems that ship tail gas is not fully contacted with seawater when the existing seawater desulfurization equipment provided in the background art is used, so that the ship tail gas is not thoroughly desulfurized, the discharged tail gas is difficult to reach the emission standard, and the surrounding environment is affected.
In order to achieve the purpose, the invention provides the following technical scheme: a collision type ship seawater desulfurization device comprises a desulfurization bin, a water inlet pipe, an air outlet pipe, an air inlet pipe and an overflow water outlet pipe, wherein the water inlet pipe is longitudinally connected to the middle part of the upper surface of the desulfurization bin;
the middle part of the lower surface of the desulfurization bin is connected with a motor support through a screw, the middle part of the lower surface of the desulfurization bin is provided with a driving motor through the motor support, an output shaft of the driving motor is connected with a rotating shaft, the upper end of the rotating shaft extends to the inner cavity of the desulfurization bin, the upper end of the rotating shaft is provided with a stirring impeller, and the stirring impeller is positioned in the inner cavity of the desulfurization bin;
a baffle is fixedly connected to the upper side of the right side wall of the inner cavity of the desulfurization bin;
branch is transversely installed to the inner chamber upside of inlet tube, the middle part of branch is provided with the retainer plate, vertical fixed mounting has the pillar in the retainer plate, the bottom of pillar is provided with the dispersion dog, the outer wall of pillar just is located and evenly is provided with the spiral between retainer plate and the dispersion dog and winds the board.
Preferably, the upper surface of the desulfurization bin is in a shape of a small-top and large-bottom mouth.
Preferably, the position of the overflow water pipe is higher than the positions of the stirring impeller and the air inlet pipe.
Preferably, the outer wall of the rotating shaft is provided with a bearing, the bearing is arranged on the lower surface of the desulfurization bin, and the bearing is a sealing bearing.
Preferably, the baffle is in an inclined shape with a lower left end and a higher right end, the left end of the baffle is higher than the overflow water outlet pipe, and the right end of the baffle is positioned at the lower side of the air outlet pipe.
Preferably, the front side wall and the rear side wall of the baffle are both provided with sealing gaskets, and the sealing gaskets are attached to the inner wall of the desulfurization bin.
Preferably, the dispersing stop block is in a round table shape with a small top and a large bottom, and the diameter of the bottom end of the dispersing stop block is smaller than the diameter of the inner cavity of the water inlet pipe.
Compared with the prior art, the invention has the beneficial effects that:
1) through the matching action of the driving motor, the rotating shaft and the stirring impeller, the tail gas and the seawater flow in the desulfurization bin, so that the seawater can be fully contacted with the tail gas, and a better desulfurization effect is achieved;
2) through the arrangement of the baffle, the tail gas can be guided to the right firstly, and then enters the upper side of the baffle through the left side after sufficient tail gas exists on the right side, so that the flow time of the tail gas in the desulfurization bin can be increased, and the desulfurization time and the desulfurization effect can be ensured;
3) through the cooperation of spiral winding board, dispersion dog for the sea water is rotatory form when getting into the desulfurization storehouse, thereby makes the effect of sea water dispersion better, thereby can be better with the contact effect of tail gas.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the desulfurization bin of the present invention;
fig. 3 is a schematic view of the internal structure of the water inlet pipe of the present invention.
In the figure: the device comprises a desulfurization bin 1, a water inlet pipe 2, an air outlet pipe 3, an air inlet pipe 4, a motor support 5, a driving motor 6, a rotating shaft 7, a stirring impeller 8, an overflow water outlet pipe 9, a supporting rod 10, a fixing ring 11, a supporting column 12, a spiral winding plate 13, a dispersing stop block 14 and a baffle plate 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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1-3, the present invention provides a technical solution: a collision type ship seawater desulfurization device comprises a desulfurization bin 1, a water inlet pipe 2, an air outlet pipe 3, an air inlet pipe 4 and an overflow water outlet pipe 9, wherein the water inlet pipe 2 is longitudinally connected to the middle part of the upper surface of the desulfurization bin 1, the air outlet pipe 3 is connected to the right side of the upper surface of the desulfurization bin 1, the air inlet pipe 4 is connected to the lower side of the left side wall of the desulfurization bin 1, the overflow water outlet pipe 9 is connected to the middle part of the right side wall of the desulfurization bin 1, and the water inlet pipe 2, the air outlet pipe 3, the air inlet pipe 4 and the overflow;
the sea water passes through inlet tube 2 and gets into the inner chamber in desulfurization storehouse 1 to discharge through excessive outlet pipe 9, treat that desulfurized tail gas passes through intake pipe 4 and gets into the inner chamber in desulfurization storehouse 1, and discharge through outlet duct 3, at the contact of the inner chamber sea water in desulfurization storehouse 1 with tail gas, realize desulfurated effect.
SO in tail gas2Contact with seawater takes place for the following main reactions:
SO2(gaseous) + H2O→H2SO3→H++HSO3-
HSO3-→H++SO3 2-
SO3 2-+1/2O2→SO4 2-
The reaction is absorption and oxidation process, and the seawater absorbs gaseous SO in the tail gas2Generation of H2SO3，H2SO3Will not be stable and will decompose into H+And HSO3-，HSO3-Instability will continue to decompose into H+With SO3 2-。SO3 2-Can be combined with dissolved oxygen in water to be oxidized into SO4 2-. However, the dissolved oxygen in water is very little, generally about 7-8 mg/l, and is far from absorbing SO2SO produced3 2-By oxidation to SO4 2-。
Absorption of SO2H in the seawater+The concentration is increased to enhance the acidity of the seawater, the pH value is generally about 3, the seawater is strong in acidity, fresh alkaline seawater is needed to neutralize and improve the pH value, and H in the desulfurized seawater+The following reactions with carbonate in fresh seawater occur:
HSO3-+H+→H2CO3→CO2↑+H2O
while the neutralization reaction is carried out, a large amount of air is blown into the seawater for aeration, and the functions of the method mainly comprise: (1) adding SO3 2-Oxidized to SO4 2-(ii) a (2) Uses the mechanical force thereof to neutralize a large amount of CO generated in the reaction2Driving out of the water surface; (3) improve the dissolved oxygen of the desulfurized seawater and discharge the desulfurized seawater after reaching the standard.
As can be seen from the above reaction, seawater desulfurization does not add any chemical desulfurizing agent except seawater and air, and seawater is recovered to increase SO4 2-However, the salt content of seawater is usually 2700mg/l, and the sulfate content increased by desulfurization is about 70-80 mg/l, which belongs to the normal fluctuation range of natural seawater.
The middle part of the lower surface of the desulfurization bin 1 is connected with a motor support 5 through a screw, the middle part of the lower surface of the desulfurization bin 1 is provided with a driving motor 6 through the motor support 5, an output shaft of the driving motor 6 is connected with a rotating shaft 7, the upper end of the rotating shaft 7 extends to the inner cavity of the desulfurization bin 1, the upper end of the rotating shaft 7 is provided with a stirring impeller 8, the stirring impeller 8 is positioned in the inner cavity of the desulfurization bin 1 and is used for electrifying the driving motor 6, the driving motor 6 drives the stirring impeller 8 to rotate through the rotating shaft 7, after seawater enters the inner cavity of the desulfurization bin 1, the seawater reaches the position of an overflow water outlet pipe 9 and is discharged through the overflow water outlet pipe 9, the liquid level of the seawater is gradually increased before that, tail gas entering the inner cavity of the desulfurization bin 1 from an air inlet pipe 4 is transmitted rightwards under the action of air flow and can float, when the tail gas is under the baffle 15, the driving motor 6 drives the stirring impeller 8 to rotate through the rotating shaft 7, so that the seawater flows to be in contact with the tail gas well, and the full desulfurization effect is realized;
the baffle 15 is fixedly connected to the upper side of the right side wall of the inner cavity of the desulfurization bin 1, and the baffle 15 is arranged, so that the distance of tail gas in the inner cavity of the desulfurization bin 1 is increased, and sufficient time can be provided for the desulfurization process;
branch 10 is transversely installed to the inner chamber upside of inlet tube 2, the middle part of branch 10 is provided with retainer plate 11, vertical fixed mounting has pillar 12 in the retainer plate 11, the bottom of pillar 12 is provided with dispersion dog 14, the outer wall of pillar 12 just is located evenly to be provided with spiral winding plate 13 between retainer plate 11 and the dispersion dog 14, when the sea water passes through inlet tube 2 and gets into 1 inner chamber in desulfurization storehouse, it can contact with spiral winding plate 13, and under spiral winding plate 13's effect, the sea water can the spiral outflow, under dispersion dog 14's effect, make the sea water be to the diffusion form outflow on every side, the sea water can further desulfurization with the tail gas contact that rises, thereby can carry out the secondary desulfurization to not having abundant tail gas of desulfurization, guarantee desulfurated effect.
The upper surface of the desulfurization bin 1 is in a closing shape with a small upper part and a big lower part, so that seawater can be conveniently diffused and enter.
The position of excessive outlet pipe 9 is higher than impeller 8, the position of intake pipe 4 for the tail gas that gets into can stir with impeller 8 contact, and can make and have sufficient sea water volume and tail gas to carry out first contact desulfurization effect in desulfurization storehouse 1.
Be provided with the bearing on the outer wall of pivot 7, and the bearing is installed on the lower surface of desulfurization storehouse 1, and the bearing is sealed bearing, through sealed bearing's setting, can reach sealed effect, and can make pivot 7's rotation comparatively steady.
The baffle 15 is inclined with a lower left and a higher right, the left end of the baffle 15 is higher than the position of the overflow water pipe 9, and the right end of the baffle 15 is positioned at the lower side of the air outlet pipe 3.
The front and rear side walls of the baffle 15 are provided with sealing gaskets, and the sealing gaskets are attached to the inner wall of the desulfurization bin 1, so that tail gas cannot slip away from gaps of the front and rear side walls of the baffle 15.
The dispersion stop block 14 is in a round table shape with a small upper part and a large lower part, and the diameter of the bottom end of the dispersion stop block 14 is smaller than that of the inner cavity of the water inlet pipe 2, so that the dispersion stop block has a diffusion effect on seawater.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a collision formula boats and ships sea water sweetener, includes desulfurization storehouse (1), inlet tube (2), outlet duct (3), intake pipe (4) and overflow outlet pipe (9), its characterized in that: the water inlet pipe (2) is longitudinally connected to the middle of the upper surface of the desulfurization bin (1), the air outlet pipe (3) is connected to the right side of the upper surface of the desulfurization bin (1), the air inlet pipe (4) is connected to the lower side of the left side wall of the desulfurization bin (1), the overflow water outlet pipe (9) is connected to the middle of the right side wall of the desulfurization bin (1), and the water inlet pipe (2), the air outlet pipe (3), the air inlet pipe (4) and the overflow water outlet pipe (9) are all communicated with the inner cavity of the desulfurization bin (1);
the middle of the lower surface of the desulfurization bin (1) is connected with a motor support (5) through a screw, the middle of the lower surface of the desulfurization bin (1) is provided with a driving motor (6) through the motor support (5), an output shaft of the driving motor (6) is connected with a rotating shaft (7), the upper end of the rotating shaft (7) extends to the inner cavity of the desulfurization bin (1), the upper end of the rotating shaft (7) is provided with a stirring impeller (8), and the stirring impeller (8) is positioned in the inner cavity of the desulfurization bin (1);
a baffle (15) is fixedly connected to the upper side of the right side wall of the inner cavity of the desulfurization bin (1);
branch (10) are transversely installed to the inner chamber upside of inlet tube (2), the middle part of branch (10) is provided with retainer plate (11), vertical fixed mounting has pillar (12) in retainer plate (11), the bottom of pillar (12) is provided with dispersion dog (14), the outer wall of pillar (12) just is located evenly between retainer plate (11) and dispersion dog (14) and is provided with spiral winding board (13).
2. The collision-type marine seawater desulfurization apparatus according to claim 1, characterized in that: the upper surface of the desulfurization bin (1) is in a closing shape with a small upper part and a big lower part.
3. The collision-type marine seawater desulfurization apparatus according to claim 1, characterized in that: the position of the overflow water outlet pipe (9) is higher than the positions of the stirring impeller (8) and the air inlet pipe (4).
4. The collision-type marine seawater desulfurization apparatus according to claim 1, characterized in that: the outer wall of the rotating shaft (7) is provided with a bearing, the bearing is installed on the lower surface of the desulfurization bin (1), and the bearing is a sealing bearing.
5. The collision-type marine seawater desulfurization apparatus according to claim 1, characterized in that: the baffle (15) is in an inclined shape with a lower left and a higher right, the left end of the baffle (15) is higher than the overflow water outlet pipe (9), and the right end of the baffle (15) is positioned at the lower side of the air outlet pipe (3).
6. The collision-type marine seawater desulfurization apparatus according to claim 1, characterized in that: the front side wall and the rear side wall of the baffle (15) are both provided with sealing gaskets, and the sealing gaskets are attached to the inner wall of the desulfurization bin (1).
7. The collision-type marine seawater desulfurization apparatus according to claim 1, characterized in that: the dispersing stop block (14) is in a round table shape with a small upper part and a large lower part, and the diameter of the bottom end of the dispersing stop block (14) is smaller than that of the inner cavity of the water inlet pipe (2).
CN201910899877.1A 2019-09-23 2019-09-23 Collision formula boats and ships sea water sweetener Pending CN110721585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910899877.1A CN110721585A (en) 2019-09-23 2019-09-23 Collision formula boats and ships sea water sweetener

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Application Number Priority Date Filing Date Title
CN201910899877.1A CN110721585A (en) 2019-09-23 2019-09-23 Collision formula boats and ships sea water sweetener

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040156769A1 (en) * 2001-07-05 2004-08-12 Sune Bengtsson Method and a device for the separation of sulphur dioxide from a gas
CN202410502U (en) * 2011-12-22 2012-09-05 福建省亿利达环保工程有限公司 Automatic gas and liquid mixed gas-impact spray desulfurizing and dedusting tower
CN203469796U (en) * 2013-10-15 2014-03-12 于利全 Boiler flue gas desulfurization tower
CN107051161A (en) * 2017-05-11 2017-08-18 金柯楠 A kind of environmentally friendly flue gas spray dries desulfurizer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040156769A1 (en) * 2001-07-05 2004-08-12 Sune Bengtsson Method and a device for the separation of sulphur dioxide from a gas
CN202410502U (en) * 2011-12-22 2012-09-05 福建省亿利达环保工程有限公司 Automatic gas and liquid mixed gas-impact spray desulfurizing and dedusting tower
CN203469796U (en) * 2013-10-15 2014-03-12 于利全 Boiler flue gas desulfurization tower
CN107051161A (en) * 2017-05-11 2017-08-18 金柯楠 A kind of environmentally friendly flue gas spray dries desulfurizer

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