CN104383803A - Wet-method desulphurization device for micropressure flue gas and seawater or reclaimed water desulphurization device - Google Patents
Wet-method desulphurization device for micropressure flue gas and seawater or reclaimed water desulphurization device Download PDFInfo
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- CN104383803A CN104383803A CN201410668643.3A CN201410668643A CN104383803A CN 104383803 A CN104383803 A CN 104383803A CN 201410668643 A CN201410668643 A CN 201410668643A CN 104383803 A CN104383803 A CN 104383803A
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Abstract
The invention discloses a wet-method desulphurization device for micropressure flue gas and a seawater or reclaimed water desulphurization device. In the wet-method desulphurization device for the micropressure flue gas, a water pump is used for pumping filtered lime water in a water collecting tank into a desulphurization water tank; the flue gas flows through a main flue pipe and an organic silicon rubber flue pipe and comes out from a hard plastic pipe below blended cotton cloth on the desulphurization water tank, and reaction that SO2+Ca(OH)2=CaSO3+H2O is generated; nitrogen in the flue gas slowly flows through the wet blended cotton cloth on the desulphurization water tank, and then is discharged from a chimney above the desulphurization water tank; sewage after desulfurization passes through a water baffle and reaches an aeration tank; air from an air blower passes through sponge laid on the aeration tank via a main air pipe and a rubber air pipe, and is blown out from the hard plastic pipe; calcium sulfate is generated in the aeration tank, and then flows into a sedimentation basin for settling; lime water overflowing from the sedimentation basin flows into the water collecting tank, and is pumped out by the water pump for recycling. In the seawater or reclaimed water desulphurization device, the flue gas firstly enters below the blended cotton cloth of an absorption water tank, and then flows through the desulfurization water tank, the aeration tank and the sedimentation basin for treatment.
Description
Technical field:
The present invention relates to a kind of wet desulphurization device of minute-pressure flue gas and seawater or middle water desulfurizer.
Background technology:
The water pump of existing wet desulphurization device extracts limewash out from collecting-tank, and then from the civilian mound nozzle ejection atomized water of desulfurizing tower, the sulfur dioxide be atomized in the flue gas in limewash and desulfurizing tower reacts and generates calcium sulfite.After the pump handle seawater pressurization of existing seawater desulfurization device, be also the civilian mound nozzle ejection atomized water from desulfurizing tower, the sulfur dioxide in the flue gas in desulfurizing tower is dissolved in the seawater of atomization, then falls into seawater pond; Be dissolved in the sulfur dioxide in seawater and the limewash generation chemical reaction in seawater pond generates calcium sulfite, seawater containing calcium sulfite flows in the aeration tank outside desulfurizing tower, by the dioxygen oxidation in the wind that air blast blows out, generation calcium sulfate precipitation gets off, and the seawater after recovery is discharged in the sea large.Atomized water to be sprayed from the nozzle of civilian mound, will be very high from the pressure of water pump water out; Under the condition of identical water yield, require that water pump is very high, the recruitment of pump power is directly proportional to the cube of the recruitment of water pump water outlet.Power consumption height desulphurization cost is just high.Patent of invention 201310020144.9 " a kind of method for supplying oxygen and device being applicable to marine exhaust sea water desulfuration " is recorded: " in slurry pool of absorption tower, multilayer many is horizontally disposed with flue gas arm circumference nozzle; in slurry pool of absorption tower, form slurries eddy flow; can play stirring action, enhance the disturbance of slurries; Utilize simultaneously to the nozzle ejection slurries of carrying flue gas secretly impact downwards after upwards catadioptric again, extend the time of staying of flue gas, add the utilization rate of oxygen in flue gas." slurries, form bubble from the flue gas of nozzle ejection; the sulfur dioxide at bubble edge can with slurry liquid contacts, be dissolved in slurries; and the sulfur dioxide of bubble central authorities cannot with slurry liquid contacts, slurries cannot be dissolved in, directly emerge from slurry pool, do not have desulfidation.During engine of boat and ship stall, blast pipe smokeless is discharged, and slurries can pour in down a chimney flue gas arm from nozzle.The flue gas that engine of boat and ship blast pipe is discharged has very high pressure, can be horizontally disposed with the ejection of flue gas arm circumference nozzle from multilayer in slurry pool of absorption tower many.But be very low from the pressure of the boiler flue gas out in power plant, the method desulfurization cannot be used.In addition, the flue gas after desulfurization also will remove water smoke through demister and remove dust through deduster, and operation is numerous and diverse in a word, operating cost is high.
Summary of the invention:
The present invention can develop the defect of existing wet desulphurization and sea water desulfuration.
The wet desulphurization device of minute-pressure flue gas of the present invention, primarily of desulfurization pond, aeration tank, sedimentation basin, collecting-tank, air blast, chimney and water pump composition.Have screen pack in collecting-tank, the limewash through filtering in pump handle collecting-tank is extracted into desulfurization pond.Sulfur dioxide in flue gas and nitric oxide are dissolved in the water in desulfurization pond, and in desulfurization pond, sulfur dioxide and lime generation chemical reaction generate calcium sulfite.Sewage after desulfurization arrives aeration tank through water fender, and throwing in aeration tank has a large amount of lime.Oxygen generation chemical reaction in the wind that calcium sulfite in aeration tank and air blast blow out generates calcium sulfate, oxygen generation chemical reaction in the wind that nitric oxide and air blast blow out generates nitrogen dioxide, nitrogen dioxide and water generation chemical reaction generate nitric acid and nitric oxide, and nitric acid and lime generation chemical reaction generate calcium nitrate and water.Water after aeration flows to sedimentation basin, and calcium sulfate precipitates in sedimentation basin.The limewash overflowed from sedimentation basin flows to collecting-tank, is recycled.Flue gas in desulfurization pond after removal sulfur dioxide and de-nitric oxide from chimney discharged to high-altitude.Much stone is placed with bottom desulfurization pond and aeration tank.Main smoke pipe flatly reaches above desulfurization pond, and main smoke pipe has many horizontal branch smoke pipes, and horizontal branch smoke pipe has the many downward thin smoke pipes of undercoat.Desulfurization pond is covered with a blending cotton, blending cotton surrounding is fixed on below wire netting square frame.Capillary smoke pipe is socketed organic silicon rubber smoke pipe, organic silicon rubber smoke pipe is connected to one section of hard plastic tube through after blending cotton.Flatly reach above aeration tank from air blast air main out, air main has many horizontal branch airducts, and horizontal branch airduct has the many downward thin airducts of undercoat.Aeration tank is covered with a sponge, sponge surrounding is fixed on below another wire netting square frame.Capillary airduct is socketed with rubber airduct, rubber airduct is connected to one section of hard plastic tube through after sponge.
Adopt the present invention of this structure, the limewash through filtering in pump handle collecting-tank is extracted into desulfurization pond.Because the difference in height between collecting-tank and desulfurization pond is very little, very the water pump of low lift just can be competent at.Unlike in existing wet desulphurization device, water pump will have very large pressure could spray spray water from the nozzle of civilian mound from the limewash that collecting-tank is extracted out.Extract the limewash of same traffic, the power of the water pump that the present invention uses be very little, both power consumption was little.Flue gas enters a point smoking pipe from main smoke pipe, then from point smoking pipe flue gas out through the thin smoke pipe of undercoat and organic silicon rubber smoke pipe, from the hard plastic tube below blending cotton out, in desulfurization pond, produces a large amount of bubbles.Sulfur dioxide in flue gas and nitric oxide are dissolved in the limewash in desulfurization pond, and the nitrogen in flue gas slowly passes through the wet mixing that desulfurization pond is covered with and spins cotton, and the chimney then above desulfurization pond is discharged.Stone in desulfurization pond can the water of flowing in stirring desulphurization pond, the sulfur dioxide in flue gas and nitric oxide is made to be rapidly dissolved in the limewash in desulfurization pond, wet mixing spins the dust removing effects of cotton than bag-type dust effect also good, the dust removed in flue gas, the limewash flowed in desulfurization pond absorbs the heat of flue gas but seldom produces water vapour, so the white cigarette that can not emerge from chimney containing a large amount of water vapour, eliminate demister.Blending cotton surrounding is fixed on below the square frame of wire netting, and blending cotton can be prevented to be out of shape by the water impact flowed in desulfurization pond.Sewage after desulfurization arrives aeration tank through water fender, and throwing in aeration tank has a large amount of lime.Air blast wind is out through flatly reaching the air main above aeration tank, point branch wind pipe, the thin airduct of undercoat and rubber airduct through the sponge that aeration tank is covered with, and the ten centimeter length hard plastic tubes be bonded with from the mouth of pipe of rubber airduct blow out.Produce a large amount of bubbles in limewash in aeration tank, the oxygen in bubble is dissolved in limewash, and the sponge gas permeability after water that wets is deteriorated, and air pocket becomes minute bubbles and slowly passes through sponge, has more oxygen to be dissolved in the water of sponge.Sponge surrounding is fixed on below the square frame of another wire netting, can prevent sponge in aeration tank by the limewash blastic deformation of flowing.Stone in aeration tank can stir the water of flowing in de-aeration tank, there is chemical reaction rapidly and generate calcium sulfate in the oxygen in the wind that the calcium sulfite in aeration tank and air blast are blown out, there is chemical reaction rapidly and generate nitrogen dioxide in the oxygen in the wind that nitric oxide and air blast blow out, nitrogen dioxide and water generation chemical reaction generate nitric acid and nitric oxide, and nitric acid and lime generation chemical reaction generate calcium nitrate and water.Water after aeration flows to sedimentation basin, and calcium sulfate precipitates in sedimentation basin.The limewash overflowed from sedimentation basin flows to collecting-tank, is extracted out recycle by water pump.Because the poor air permeability of cotton is spun in the wet mixing floated on desulfurization pond, the two centimetres of hard plastic tubes having the minute-pressure flue gas of 100 handkerchief pressure, namely ten centimeter water column pressure just can spin below cotton from wet mixing blow out.The air pocket that flue gas produces in the water in desulfurization pond spins below cotton in wet mixing and becomes minute bubbles, and the nitrogen in flue gas slowly passes through wet mixing and spins cotton, discharges from chimney.Eliminate flue gas booster fan, consumption is to reducing, so the structure of the wet desulphurization device of minute-pressure flue gas of the present invention is simple, operating cost is low.If employing natural aeration, air blast can be saved.The cost of such flue gas desulfurization can be lower.If dislike the poor air permeability of blending cotton, blending cotton can be changed into sponge.
The seawater of minute-pressure flue gas of the present invention or middle water desulfurizer, primarily of absorption pond, desulfurization pond, aeration tank, sedimentation basin, air blast, chimney and water pump composition.Sulfur dioxide in flue gas and nitric oxide are dissolved in and absorb in seawater in pond or middle water, and then flow to through baffle plate and thrown in the desulfurization pond of lime, in desulfurization pond, sulfur dioxide and lime generation chemical reaction generate calcium sulfite.The water in desulfurization pond flows in aeration tank again, and the oxygen generation chemical reaction in the wind that aeration tank sulfite calcium and air blast blow out generates calcium sulfate, and the oxygen generation chemical reaction in the wind that nitric oxide and air blast blow out generates nitrogen dioxide.Nitrogen dioxide and water generation chemical reaction generate nitric acid and nitric oxide, nitric acid and lime generation chemical reaction generate calcium nitrate and water, water after Air Exposure flows in sedimentation basin, calcium sulfate precipitates in sedimentation basin, in sedimentation basin recover after seawater be discharged to sea by drainpipe, or in sedimentation basin recover after in water be discharged to river by drainpipe.Flue gas absorption pond in slough sulfur dioxide and nitric oxide after from chimney discharged to high-altitude.Absorb bottom pond, desulfurization pond and aeration tank and be all placed with much stone, main smoke pipe flatly reaches and absorbs above pond, and main smoke pipe has many horizontal branch smoke pipes, and horizontal branch smoke pipe has the many downward thin smoke pipes of undercoat.Absorb on pond and be covered with a blending cotton, blending cotton surrounding is fixed on below wire netting square frame.Capillary smoke pipe is socketed organic silicon rubber smoke pipe, organic silicon rubber smoke pipe is connected to one section of hard plastic tube through after blending cotton.Flatly reach above aeration tank from air blast air main out, air main has many horizontal branch airducts, and horizontal branch airduct has the many downward thin airducts of undercoat.Aeration tank is covered with a sponge, sponge surrounding is fixed on below another wire netting square frame.Capillary airduct is socketed with rubber airduct, rubber airduct is connected to one section of hard plastic tube through after sponge.
Adopt the present invention of this structure, pump handle seawater or middle water are extracted into and absorb pond.Due to sea or middle pond and the difference in height that absorbs between pond very little, very the water pump of low lift just can be competent at.Unlike in existing seawater desulfurization device, water pump will have very large pressure could from civilian mound nozzle spray vaporific seawater from the seawater extracted out in the sea.Extract the seawater of same traffic compared with the water pump in existing seawater desulfurization device, the power of water pump that the present invention uses be very little, both power consumption was little.Flue gas enters a point smoking pipe from main smoke pipe, from point smoking pipe flue gas out through the thin smoke pipe of undercoat and organic silicon rubber smoke pipe, through after blending cotton from hard plastic tube out, in absorption pond, produce a large amount of bubbles.Sulfur dioxide in flue gas and nitric oxide are dissolved in and absorb in the seawater in pond or middle water, and the nitrogen in flue gas slowly passes through and absorbs the wet mixing that pond is covered with and spin cotton, then discharges from the chimney absorbed above pond.The stone absorbed in pond can stir the seawater or middle water that absorb flowing in pond, sulfur dioxide in flue gas and nitric oxide are rapidly dissolved in and absorb in the seawater in pond or middle water, wet mixing spins the dust removing effects of cotton than bag-type dust effect also good, the dust removed in flue gas, absorb the heat of seawater or the middle water absorption flue gas flowed in pond but seldom produce water vapour, so the white cigarette that can not emerge from chimney containing a large amount of water vapour, eliminate demister.Blending cotton surrounding is fixed on below wire netting square frame, and blending cotton can be prevented to be out of shape by the water impact flowed in absorption pond.Dissolve sulfur dioxide in flue gas and nitric oxide production seawater or middle water and flow to desulfurization pond through water fender from absorption pond, throw in desulfurization pond and have a large amount of lime, in desulfurization pond, sulfur dioxide and lime generation chemical reaction generate calcium sulfite, stone in desulfurization pond can the seawater of flowing in stirring desulphurization pond or middle water, makes sulfur dioxide and lime that chemical reaction occur rapidly and generate calcium sulfite.Seawater after desulfurization or middle water flow to aeration tank, air blast wind is out through flatly reaching the air main above aeration tank, point branch wind pipe, the thin airduct of undercoat and rubber airduct through the sponge that aeration tank is covered with, and the ten centimeter length hard plastic tubes be bonded with from the mouth of pipe of rubber airduct blow out.Produce a large amount of bubbles in limewash in aeration tank, the oxygen in bubble is dissolved in limewash, and the sponge gas permeability after water that wets is deteriorated, and air pocket becomes minute bubbles and slowly passes through sponge, has more oxygen to be dissolved in the water of sponge.Sponge surrounding is fixed on below another wire netting square frame, can prevent sponge in aeration tank by the limewash blastic deformation of flowing.Stone in aeration tank can stir the water of flowing in de-aeration tank, there is chemical reaction rapidly and generate calcium sulfate in the oxygen in the wind that the calcium sulfite in aeration tank and air blast are blown out, there is chemical reaction rapidly and generate nitrogen dioxide in the oxygen in the wind that nitric oxide and air blast blow out, nitrogen dioxide and water generation chemical reaction generate nitric acid and nitric oxide, and nitric acid and lime generation chemical reaction generate calcium nitrate and water.Water after aeration flows to sedimentation basin, and calcium sulfate precipitates in sedimentation basin.In sedimentation basin recover after seawater be discharged to sea by drainpipe, or in sedimentation basin recover after in water be discharged to river by drainpipe.The poor air permeability of cotton is spun owing to floating over the wet mixing absorbed on pond, there is the minute-pressure flue gas of 100 handkerchief pressure, namely ten centimeter water column pressure just can spin the hard plastic tube blowout of two centimeter length below cotton from wet mixing, the air pocket that flue gas produces in the water in absorption pond spins below cotton in wet mixing and becomes minute bubbles, nitrogen in flue gas slowly passes through wet mixing and spins cotton, discharges from chimney.Eliminate flue gas booster fan, consumption is to reducing, so the structure of the wet desulphurization device of minute-pressure flue gas of the present invention is simple, operating cost is low.There are the place of cooled with seawater or the place near sewage treatment plant, in the flue gas desulfur device built, can water pump be saved.If employing natural aeration, air blast can be saved.The cost of such flue gas desulfurization can be lower.If dislike the poor air permeability of blending cotton, blending cotton can be changed into sponge.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, more specifically detailed description is done to the present invention.
Fig. 1 is the structure principle chart of the wet desulphurization device of minute-pressure flue gas of the present invention.
Fig. 2 is the top view in desulfurization pond in the wet desulphurization device of minute-pressure flue gas of the present invention.
Fig. 3 is the top view of aeration tank in the wet desulphurization device of minute-pressure flue gas of the present invention.
Fig. 4 is the seawater of minute-pressure flue gas of the present invention or the structure principle chart of middle water desulfurizer.
Fig. 5 is the top view absorbing pond in the seawater of minute-pressure flue gas of the present invention or middle water desulfurizer.
Fig. 6 is the top view of aeration tank in the seawater of minute-pressure flue gas of the present invention or middle water desulfurizer.
Detailed description of the invention:
Shown in Fig. 1, Fig. 2, Fig. 3, the wet desulphurization device of minute-pressure flue gas of the present invention, forms primarily of desulfurization pond 2, aeration tank 3, sedimentation basin 4, collecting-tank 5, air blast 10, chimney 14 and water pump 6.Have screen pack in collecting-tank 5, water pump 6 is extracted into desulfurization pond 2 in collecting-tank 5 through the limewash filtered.Sulfur dioxide in flue gas and nitric oxide are dissolved in the water in desulfurization pond 2, and in desulfurization pond 2, sulfur dioxide and lime generation chemical reaction generate calcium sulfite.Sewage after desulfurization arrives aeration tank 3 through water fender, and throwing in aeration tank 3 has a large amount of lime.Oxygen generation chemical reaction in the wind that calcium sulfite in aeration tank 3 and air blast 10 blow out generates calcium sulfate, oxygen generation chemical reaction in the wind that nitric oxide and air blast 10 blow out generates nitrogen dioxide, nitrogen dioxide and water generation chemical reaction generate nitric acid and nitric oxide, and nitric acid and lime generation chemical reaction generate calcium nitrate and water.Water after aeration flows to sedimentation basin 4, and calcium sulfate precipitates in sedimentation basin 4.The limewash overflowed from sedimentation basin 4 flows to collecting-tank 5, is recycled.Flue gas in desulfurization pond 2 after removal sulfur dioxide and de-nitric oxide from chimney 14 discharged to high-altitude.Much stone is placed with bottom desulfurization pond 2 and aeration tank 3.Main smoke pipe 7 flatly reaches above desulfurization pond 2, and main smoke pipe 7 has many horizontal branch smoke pipes, and horizontal branch smoke pipe has the many downward thin smoke pipes of undercoat.Desulfurization pond 2 is covered with a blending cotton 8, blending cotton 8 surrounding is fixed on below wire netting square frame.Capillary smoke pipe is socketed organic silicon rubber smoke pipe 9, organic silicon rubber smoke pipe 9 is connected to one section of hard plastic tube through after blending cotton 8.Flatly reach above aeration tank 3 from air blast 10 air main 11 out, air main 11 has many horizontal branch airducts, and horizontal branch airduct has the many downward thin airducts of undercoat.Aeration tank 3 is covered with a sponge 12, sponge 12 surrounding is fixed on below another wire netting square frame.Capillary airduct is socketed with rubber airduct 13, rubber airduct 13 is connected to one section of hard plastic tube through after sponge 12.
Shown in Fig. 1, Fig. 2, Fig. 3, adopt the present invention of this structure, water pump 6 is extracted into desulfurization pond 2 in collecting-tank 5 through the limewash filtered.Because the difference in height between collecting-tank 5 and desulfurization pond 2 is very little, very the water pump 6 of low lift just can be competent at.Unlike in existing wet desulphurization device, water pump 6 will have very large pressure could spray spray water from the nozzle of civilian mound from the limewash that collecting-tank 5 is extracted out.Extract the limewash of same traffic, the power of the water pump 6 that the present invention uses be very little, both power consumption was little.Flue gas enters a point smoking pipe from main smoke pipe 7, then from point smoking pipe flue gas out through the thin smoke pipe of undercoat and organic silicon rubber smoke pipe 9, from the hard plastic tube below blending cotton 8 out, in desulfurization pond 2, produces a large amount of bubbles.Sulfur dioxide in flue gas and nitric oxide are dissolved in the limewash in desulfurization pond 2, and the nitrogen in flue gas slowly passes through the wet mixing that desulfurization pond 2 is covered with and spins cotton 8, and the chimney 14 then above desulfurization pond 2 is discharged.The stone that desulfurization pond is 2 li can the water of flowing in stirring desulphurization pond 2, the sulfur dioxide in flue gas and nitric oxide is made to be rapidly dissolved in the limewash in desulfurization pond 2, wet mixing spins the dust removing effects of cotton 8 than bag-type dust effect also good, the dust removed in flue gas, the limewash of flowing in desulfurization pond 2 absorbs the heat of flue gas but seldom produces water vapour, so the white cigarette can not emerged containing a large amount of water vapour from chimney 14, eliminate demister.Blending cotton 8 surrounding is fixed on below wire netting square frame, and blending cotton 8 can be prevented to be out of shape by the water impact flowed in desulfurization pond 2.Sewage after desulfurization arrives aeration tank 3 through water fender, and throwing in aeration tank 3 has a large amount of lime.Air blast 10 wind is out through flatly reaching the air main 7 above aeration tank 3, point branch wind pipe, the thin airduct of undercoat and rubber airduct 13 through the sponge 12 that aeration tank 3 is covered with, and the ten centimeter length hard plastic tubes be bonded with from the mouth of pipe of rubber airduct 13 blow out.Produce a large amount of bubbles in limewash in aeration tank 3, the oxygen in bubble is dissolved in limewash, and sponge 12 gas permeability after water that wets is deteriorated, and air pocket becomes minute bubbles and slowly passes through sponge 12, has more oxygen to be dissolved in the water of sponge 12.Sponge 12 surrounding is fixed on below another wire netting square frame, can prevent sponge 12 in aeration tank 3 by the limewash blastic deformation of flowing.The stone that aeration tank is 3 li can stir the water of flowing in de-aeration tank 3, there is chemical reaction rapidly and generate calcium sulfate in the oxygen in the wind that the calcium sulfite in aeration tank 3 and air blast 10 are blown out, there is chemical reaction rapidly and generate nitrogen dioxide in the oxygen in the wind that nitric oxide and air blast 10 blow out, nitrogen dioxide and water generation chemical reaction generate nitric acid and nitric oxide, and nitric acid and lime generation chemical reaction generate calcium nitrate and water.Water after aeration flows to sedimentation basin 4, and calcium sulfate precipitates in sedimentation basin 4.The limewash overflowed from sedimentation basin 4 flows to collecting-tank 5, is extracted out recycle by water pump 6.Because the poor air permeability of cotton 8 is spun in the wet mixing floated on desulfurization pond 2, the two centimetres of hard plastic tubes having the minute-pressure flue gas of 100 handkerchief pressure, namely ten centimeter water column pressure just can spin below cotton 8 from wet mixing blow out.The air pocket that flue gas produces in the water in desulfurization pond 2 spins below cotton 8 in wet mixing and becomes minute bubbles, and the nitrogen in flue gas slowly passes through wet mixing and spins cotton 8, discharges from chimney 14.Eliminate flue gas booster fan, consumption is to reducing, so the structure of the wet desulphurization device of minute-pressure flue gas of the present invention is simple, operating cost is low.If employing natural aeration, air blast 10 can be saved.The cost of such flue gas desulfurization can be lower.
Shown in Fig. 4, Fig. 5, Fig. 6, the seawater of minute-pressure flue gas of the present invention or middle water desulfurizer, form primarily of absorption pond 1, desulfurization pond 2, aeration tank 3, sedimentation basin 4, air blast 6, chimney 14 and water pump 6.Sulfur dioxide in flue gas and nitric oxide are dissolved in the seawater or middle water absorbing 1 li, pond, and then flow to through baffle plate and thrown in the desulfurization pond 2 of lime, in desulfurization pond 2, sulfur dioxide and lime generation chemical reaction generate calcium sulfite.The water in desulfurization pond 2 flows in aeration tank 3 again, and the oxygen generation chemical reaction in the wind that aeration tank 3 sulfite calcium and air blast 6 blow out generates calcium sulfate, and the oxygen generation chemical reaction in the wind that nitric oxide and air blast 6 blow out generates nitrogen dioxide.Nitrogen dioxide and water generation chemical reaction generate nitric acid and nitric oxide, nitric acid and lime generation chemical reaction generate calcium nitrate and water, water after Air Exposure flows in sedimentation basin 4, calcium sulfate precipitates in sedimentation basin 4, in sedimentation basin 4 recover after seawater be discharged to sea by drainpipe, or in sedimentation basin 4 recover after in water be discharged to river by drainpipe.Flue gas absorption pond in slough sulfur dioxide and nitric oxide after from chimney 14 discharged to high-altitude.Absorb bottom pond 1, desulfurization pond 2 and aeration tank 3 and be all placed with much stone, main smoke pipe 7 flatly reaches and absorbs above pond 1, and main smoke pipe 7 has many horizontal branch smoke pipes, and horizontal branch smoke pipe has the many downward thin smoke pipes of undercoat.Absorb on pond 1 and be covered with a blending cotton 8, blending cotton 8 surrounding is fixed on below wire netting square frame.Capillary smoke pipe is socketed organic silicon rubber smoke pipe 9, organic silicon rubber smoke pipe 9 is connected to one section of hard plastic tube through after blending cotton 8.Flatly reach above aeration tank 3 from air blast 10 air main 11 out, air main 11 has many horizontal branch airducts, and horizontal branch airduct has the many downward thin airducts of undercoat.Aeration tank is covered with a sponge 12, sponge 12 surrounding is fixed on below another wire netting square frame.Capillary airduct is socketed with rubber airduct 13, rubber airduct 13 is connected to one section of hard plastic tube through after sponge 12.
Shown in Fig. 4, Fig. 5, Fig. 6, adopt the present invention of this structure, water pump 6 is extracted into seawater or middle water and absorbs pond 1.Due to sea or middle pond and the difference in height that absorbs between pond 1 very little, very the water pump 6 of low lift just can be competent at.Unlike in existing seawater desulfurization device, water pump 6 will have very large pressure could from civilian mound nozzle spray vaporific seawater from the seawater extracted out in the sea.Extract the seawater of same traffic compared with the water pump 6 in existing seawater desulfurization device, the power of water pump 6 that the present invention uses be very little, both power consumption was little.Flue gas enters a point smoking pipe from main smoke pipe 7, from point smoking pipe flue gas out through the thin smoke pipe of undercoat and organic silicon rubber smoke pipe 9, through after blending cotton 8 from hard plastic tube out, in absorption pond 1, produce a large amount of bubbles.Sulfur dioxide in flue gas and nitric oxide are dissolved in and absorb in the seawater in pond 1 or middle water, and the nitrogen in flue gas slowly passes through and absorbs the wet mixing that pond 1 is covered with and spin cotton 8, then discharges from the chimney 14 absorbed above pond 1.The stone absorbing 1 li, pond can stir the seawater or middle water that absorb flowing in pond 1, sulfur dioxide in flue gas and nitric oxide are rapidly dissolved in and absorb in the seawater in pond 1 or middle water, wet mixing spins the dust removing effects of cotton 8 than bag-type dust effect also good, the dust removed in flue gas, the seawater or the middle water that absorb flowing in pond 1 absorb the heat of flue gas but seldom produce water vapour, so the white cigarette can not emerged containing a large amount of water vapour from chimney 14, eliminate demister.Blending cotton 8 surrounding is fixed on below wire netting square frame, and blending cotton 8 can be prevented to be out of shape by the water impact flowed in absorption pond 1.Dissolve sulfur dioxide in flue gas and nitric oxide production seawater or middle water and flow to desulfurization pond 2 through water fender from absorption pond 1, throw in desulfurization pond 2 and have a large amount of lime, in desulfurization pond 2, sulfur dioxide and lime generation chemical reaction generate calcium sulfite, the stone that desulfurization pond is 2 li can the seawater of flowing in stirring desulphurization pond 2 or middle water, makes sulfur dioxide and lime that chemical reaction occur rapidly and generate calcium sulfite.Seawater after desulfurization or middle water flow to aeration tank 3, air blast 10 wind is out through flatly reaching the air main 11 above aeration tank 3, point branch wind pipe, the thin airduct of undercoat and rubber airduct 13 through the sponge that aeration tank 3 is covered with, and the ten centimeter length hard plastic tubes be bonded with from the mouth of pipe of rubber airduct 13 blow out.Produce a large amount of bubbles in limewash in aeration tank 3, the oxygen in bubble is dissolved in limewash, and sponge 12 gas permeability after water that wets is deteriorated, and air pocket becomes minute bubbles and slowly passes through sponge 12, has more oxygen to be dissolved in the water of sponge 12.Sponge 12 surrounding is fixed on below another wire netting square frame, can prevent sponge 12 in aeration tank 3 by the limewash blastic deformation of flowing.The stone that aeration tank is 3 li can stir the water of flowing in de-aeration tank 3, there is chemical reaction rapidly and generate calcium sulfate in the oxygen in the wind that the calcium sulfite in aeration tank 3 and air blast 10 are blown out, there is chemical reaction rapidly and generate nitrogen dioxide in the oxygen in the wind that nitric oxide and air blast 10 blow out, nitrogen dioxide and water generation chemical reaction generate nitric acid and nitric oxide, and nitric acid and lime generation chemical reaction generate calcium nitrate and water.Water after aeration flows to sedimentation basin 4, and calcium sulfate precipitates in sedimentation basin 4.In sedimentation basin 4 recover after seawater be discharged to sea by drainpipe, or in sedimentation basin 4 recover after in water be discharged to river by drainpipe.The poor air permeability of cotton 8 is spun owing to floating over the wet mixing absorbed on pond 1, there is the minute-pressure flue gas of 100 handkerchief pressure, namely ten centimeter water column pressure just can spin the hard plastic tube blowout of two centimeter length below cotton 8 from wet mixing, the air pocket that flue gas produces in the water in absorption pond 1 spins below cotton 8 in wet mixing and becomes minute bubbles, nitrogen in flue gas slowly passes through wet mixing and spins cotton 8, discharges from chimney 14.Eliminate flue gas booster fan, consumption is to reducing, so the structure of the wet desulphurization device of minute-pressure flue gas of the present invention is simple, operating cost is low.There are the place of cooled with seawater or the place near sewage treatment plant, in the flue gas desulfur device built, water pump 6 can be saved.If employing natural aeration, air blast 10 can be saved.The cost of such flue gas desulfurization can be lower.
Claims (2)
1. the wet desulphurization device of a minute-pressure flue gas, primarily of desulfurization pond, aeration tank, sedimentation basin, collecting-tank, air blast, chimney and water pump composition, screen pack is had in collecting-tank, limewash through filtering in pump handle collecting-tank is extracted into desulfurization pond, sulfur dioxide in flue gas and nitric oxide are dissolved in the water in desulfurization pond, in desulfurization pond, sulfur dioxide and lime generation chemical reaction generate calcium sulfite, sewage after desulfurization arrives aeration tank through water fender, throw in aeration tank and have a large amount of lime, oxygen generation chemical reaction in the wind that calcium sulfite in aeration tank and air blast blow out generates calcium sulfate, oxygen generation chemical reaction in the wind that nitric oxide and air blast blow out generates nitrogen dioxide, nitrogen dioxide and water generation chemical reaction generate nitric acid and nitric oxide, nitric acid and lime generation chemical reaction generate calcium nitrate and water, water after aeration flows to sedimentation basin, calcium sulfate precipitates in sedimentation basin, the limewash overflowed from sedimentation basin flows to collecting-tank, be recycled, flue gas in desulfurization pond after removal sulfur dioxide and de-nitric oxide from chimney discharged to high-altitude, it is characterized in that: described desulfurization pond (2) and aeration tank (3) bottom are placed with much stone, main smoke pipe (7) flatly reaches described desulfurization pond (2) top, main smoke pipe (7) has many horizontal branch smoke pipes, horizontal branch smoke pipe has the many downward thin smoke pipes of undercoat, described desulfurization pond (2) is covered with a blending cotton (8), blending cotton (8) surrounding is fixed on below wire netting square frame, capillary smoke pipe is socketed organic silicon rubber smoke pipe (9), organic silicon rubber smoke pipe (9) is connected to one section of hard plastic tube through after blending cotton (8), top, described aeration tank (3) is flatly reached from described air blast (10) air main out (11), air main (11) has many horizontal branch airducts, horizontal branch airduct has the many downward thin airducts of undercoat, described aeration tank (3) is covered with a sponge (12), sponge (12) surrounding is fixed on below another wire netting square frame, capillary airduct is socketed with rubber airduct (13), rubber airduct (13) is connected to one section of hard plastic tube through after sponge (12).
2. the seawater of a minute-pressure flue gas or middle water desulfurizer, primarily of absorption pond, desulfurization pond, aeration tank, sedimentation basin, air blast, chimney and water pump composition, sulfur dioxide in flue gas and nitric oxide are dissolved in and absorb in seawater in pond or middle water, then flowing to through baffle plate has thrown in the desulfurization pond of lime, in desulfurization pond, sulfur dioxide and lime generation chemical reaction generate calcium sulfite, the water in desulfurization pond flows in aeration tank again, oxygen generation chemical reaction in the wind that aeration tank sulfite calcium and air blast blow out generates calcium sulfate, oxygen generation chemical reaction in the wind that nitric oxide and air blast blow out generates nitrogen dioxide, nitrogen dioxide and water generation chemical reaction generate nitric acid and nitric oxide, nitric acid and lime generation chemical reaction generate calcium nitrate and water, water after Air Exposure flows in sedimentation basin, calcium sulfate precipitates in sedimentation basin, seawater after recovering in sedimentation basin is discharged to sea by drainpipe, or water is discharged to river by drainpipe in after recovering in sedimentation basin, flue gas absorption pond in slough sulfur dioxide and nitric oxide after from chimney discharged to high-altitude, it is characterized in that: described absorption pond (1), desulfurization pond (2) and aeration tank (3) bottom are all placed with much stone, main smoke pipe flatly reaches described absorption pond (1) top, main smoke pipe has many horizontal branch smoke pipes, horizontal branch smoke pipe has the many downward thin smoke pipes of undercoat, described absorption pond is covered with a blending cotton, blending cotton surrounding is fixed on below wire netting square frame, capillary smoke pipe is socketed organic silicon rubber smoke pipe (9), organic silicon rubber smoke pipe (9) is through being connected to one section of hard plastic tube after blending cotton, top, described aeration tank (3) is flatly reached from described air blast (10) air main out (11), air main (11) has many horizontal branch airducts, horizontal branch airduct has the many downward thin airducts of undercoat, described aeration tank (3) is covered with a sponge (12), sponge (12) surrounding is fixed on below another wire netting square frame, capillary airduct is socketed with rubber airduct (13), rubber airduct (13) is connected to one section of hard plastic tube through after sponge (12).
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| CN201410668643.3A CN104383803B (en) | 2014-11-13 | 2014-11-13 | The wet desulphurization device and seawater of minute-pressure flue gas or middle water desulfurizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114733323A (en) * | 2022-04-20 | 2022-07-12 | 江苏俊华海洋工程装备有限公司 | Marine tail gas desulfurization system capable of utilizing seawater for energy saving and cooling |
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| CN201880479U (en) * | 2010-09-15 | 2011-06-29 | 张步芳 | Seawater desulfurization device for boiler flue gas |
| CN102343209A (en) * | 2011-09-28 | 2012-02-08 | 西安交通大学 | Seawater flue gas desulphurization (FGD) system applying boiler blowdown water |
| CN102974201A (en) * | 2011-08-08 | 2013-03-20 | 同方环境股份有限公司 | Double pH adjustment flue gas desulphurization system and control method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201880479U (en) * | 2010-09-15 | 2011-06-29 | 张步芳 | Seawater desulfurization device for boiler flue gas |
| CN102974201A (en) * | 2011-08-08 | 2013-03-20 | 同方环境股份有限公司 | Double pH adjustment flue gas desulphurization system and control method thereof |
| CN102343209A (en) * | 2011-09-28 | 2012-02-08 | 西安交通大学 | Seawater flue gas desulphurization (FGD) system applying boiler blowdown water |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114733323A (en) * | 2022-04-20 | 2022-07-12 | 江苏俊华海洋工程装备有限公司 | Marine tail gas desulfurization system capable of utilizing seawater for energy saving and cooling |
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