CN108261910A - A kind of washing ammonia desulfuration equipment - Google Patents
A kind of washing ammonia desulfuration equipment Download PDFInfo
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- CN108261910A CN108261910A CN201810275933.XA CN201810275933A CN108261910A CN 108261910 A CN108261910 A CN 108261910A CN 201810275933 A CN201810275933 A CN 201810275933A CN 108261910 A CN108261910 A CN 108261910A
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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
- B01D53/74—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
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- 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
- B01D53/75—Multi-step processes
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention is a kind of washing ammonia desulfuration equipment, including the prewashing tower connected by interface channel and absorption tower, the prewashing top of tower is provided with kiln gas air inlet, kiln gas gas outlet is provided at the top of the absorption tower, being disposed with aerosol cohesion along smoke movement direction inside the prewashing tower washes layer, spraying layer, circulating cooling layer.Flue gas is handled using the present invention, on the basis of spraying layer cooling, one layer of circulating cooling layer is superimposed, mass-and heat-transfer effect is carried out between increase and flue gas, improve the abjection ability of back segment electrostatic precipitator, is the deep purifying processing to flue gas.
Description
Technical field
The present invention relates to ammonia desulfuration equipments, and in particular to a kind of washing ammonia desulfuration equipment.
Background technology
Increase aerosol cohesion water wash system in the prewashing tower of ammonia desulfuration equipment, the basic function of aerosol washing system is logical
It crosses using aerosol two-fluid spray system, clear water atomization is generated into a large amount of droplets, is significantly increased and aerosol subtle in flue gas
Contact probability, so as to improve desulfurization dust-removing efficiency.
CN204933781U discloses a kind of air atomization spray gun, including inner sleeve, is arranged on inner sleeve wherein one end
Air cap and connection be arranged on the water inlet pipe and air inlet pipe of inner sleeve the other end, the inner sleeve with air cap
It stretches into desulfurizing tower, is additionally provided with adjusting retaining mechanism, adjusting locking in the middle part of the inner sleeve between desulfurizing tower
Mechanism includes being fixed at ring flange at the top of desulfurizing tower, is fixed on ring flange and externally threaded company is offered in outside wall surface
Female connector, collet and lock nut.However, although this method discloses the spray gun that may be used in aerosol, but wash system
It is not high that bulk cargo puts efficiency of dust collection.
CN205731707U discloses a kind of ammonia desulfuration equipment with aerosol coacervation water wash system device, specifically discloses
Spray gun, prewashing tower, water circuit system and air-channel system are connected between the aerosol coacervation water wash system and desulfurizing tower by interface channel
It connects, the spray gun is distributed in the tower top, Ta Nei and interface channel of prewashing tower, and the tower top sets two spray guns, is set in tower
One spray gun, interface channel one spray gun of interior setting；The nozzle of two spray guns of the tower top is placed in prewashing tower downward.So
And the method use excessive water resource, meanwhile, it cannot slowly become slant acidity after the water resource and smoke reaction that use,
It cannot recycle.Therefore, it not only pollutes the environment, but also also creates a large amount of waste.
Therefore, the prior art lacks a kind of relative energy-saving environmental protection, water-saving washing ammonia desulfuration equipment.
Invention content
To solve the above problems, the present invention provides a kind of washing ammonia desulfuration equipment, it can not only pass through atomized water and cigarette
Mass-and heat-transfer effect is carried out between gas, further reduces flue-gas temperature, makes the aerosol particle object of the water vapour and remaining in flue gas
It is condensed on water mist particle, droplet is made to grow up, to further improve demisting efficiency, and use recirculated cooling water and spray equipment
Cooperation, can be with using water wisely and environmental protection.
Concrete scheme of the present invention is as follows：
A kind of washing ammonia desulfuration equipment, including the prewashing tower connected by interface channel and absorption tower, the prewashing tower
Top is provided with kiln gas air inlet, is provided with kiln gas gas outlet at the top of the absorption tower, along flue gas inside the prewashing tower
The direction of motion is disposed with aerosol cohesion washing layer, spraying layer, circulating cooling layer.
In the actual production process, pending flue gas is generally the larger situation of the exhaust gas volumns such as coal-burning power plant, standard
Exhaust gas volumn is generally 30000-50000Nm3/ h, and flue-gas temperature is 130 DEG C or so.Therefore, only only spraying cooling, cooling
Time is short, and cooling capacity is limited, and cooling efficiency is in contrast than relatively low.Therefore, on the basis of spraying layer cooling, superposition one
Layer circulating cooling layer, carries out mass-and heat-transfer effect between increase and flue gas, significantly reduce the temperature of flue gas, for absorption below
Tower, which is further processed, provides very big facility.
Preferably, the circulating cooling layer connects successively with cooling water tank, cooling water pump cycle.
Preferably, the circulating cooling layer includes cooling water pipe and water pipe fixing device, the water pipe fixing device
The cooling water pipe is fixed on to the inner wall of the prewashing tower.
Preferably, the circulating cooling layer includes the flow slowing down net being arranged on around the cooling water pipe tube body, institute
Flow slowing down net is stated as porous wire netting.Porous wire netting not only can also slow down spray liquid with reducing smoke flowing velocity
Water velocity, not only increase the gas heat exchanger time of flue gas and cooling water pipe, also increase the gas heat of flue gas and spray liquid
Swap time further increases the cooling effect of flue gas.
Preferably, the cooling water pipe is from top to bottom multilayer equidistant placement, quadrature arrangement between upper and lower two layers is described
Cooling water pipe shares 10-20 layers, and the ratio between the distance between every layer and the caliber of the cooling water pipe are 1:1-3.This arrangement side
Formula, space availability ratio is high, good cooling results.
Preferably, on the flow slowing down network arrangements and under be disposed with three layers, top layer's screen size is 2.00-
4.00mm, that is, 5 mesh to 10 mesh, middle layer screen pore size are 2.00-0.850mm, that is, -20 mesh of 10 mesh, top layer's sieve
Pore size is 0.850-0.300mm, that is, -50 mesh of 20 mesh.Screen size is very few, the air resistance that comparison can be brought high, and
Screen size is excessive, will not bring relatively good slowing effect.Therefore, screen size is reduced successively using three layers, it can band
Carry out proper slowing effect, advantageously promote makings heat transfer.
Preferably, length of the cooling water pipe in prewashing tower inner height direction is the 1/4-1/3 of prewashing tower height degree.Only
Guaranteed certain height, had not only interfered with the pattern of prewashing tower entirety, but also can guarantee the time of contact of flue gas and cooling water, into
And ensure the efficiency of cooling.
Preferably, the spraying layer is connected with Sprayer Circulation water pump cycle, the flow set of the Sprayer Circulation water pump
For 10-20m3/ h, the flow set of the cooling water pump is 10-100m3/ h, the volume of the cooling water tank is 100-1000m3。
30000-50000Nm is generally according to standard fume amount3/ h, and flue-gas temperature is 130 DEG C or so, according to actual condition, design
Rational technological parameter ensure that air-flow cooling effect.
Preferably, the interface channel inner upper is provided with spray gun.
Preferably, the spray gun includes gun shot and nozzle, the nozzle is welded on one end of gun shot, the nozzle
Angle with gun shot is 90-180 °, and the nozzle is equipped with 3-20 spray orifice, and the spray orifice is evenly distributed on nozzle, described
The diameter range of spray orifice is 0.1-3mm；The other end of the gun shot is equipped with air hose and water pipe, the air hose and water pipe
Aperture ratio is 1：0.8~1.2, a diameter of 20-100mm of the air hose.
Beneficial effects of the present invention：
1. the present invention on the basis of spraying layer cooling, is superimposed one layer of circulating cooling layer, mass transfer is carried out between increase and flue gas
Heat transfer effect greatly improves flue gas cooling effect so that prewashing tower slurries spray carries out at low temperature, reduces ammonium sulfite
Volatilization, it is possible to reduce the generation of aerosol；
2. cooling water pipe and air-flow speed reduction screen cooperate, the heat exchanger time of air-flow and liquid is increased, is further carried
High cooling effect；
3. the present invention increases specific surface using spray gun atomization technique atomized water, increase what is collided with each other with microfluidic aerosol intergranular
Frequency simultaneously occurs to agglomerate coalescence phenomenon, molecule is made to become larger particles, these particles are easy to the electric demisting in back segment
It is removed in device, it is more preferable than increasing one layer of slurries spraying effect newly in prewashing tower, it is energy saving.
4. the present invention is not only more environmentally-friendly efficient, but also water resource is greatly saved.
Description of the drawings
Fig. 1 apparatus main body structure diagrams；
Fig. 2 Section A-A sectional views.
Reference numeral：Prewashing tower 1, absorption tower 2, kiln gas air inlet 3, kiln gas gas outlet 4, aerosol cohesion washing layer 5,
Spraying layer 6, circulating cooling layer 7, Sprayer Circulation water pump 8, circulating chilled water water pump 9, cooling water tank 10, spray gun 11, interface channel 12,
Cooling water pipe 13, flow slowing down net 14, water pipe fixing device 15.
Specific embodiment
The specific embodiment of the present invention is described further below：
A kind of washing ammonia desulfuration equipment, as depicted in figs. 1 and 2, including 1 He of prewashing tower connected by interface channel 12
Absorption tower 2,1 top of prewashing tower are provided with kiln gas air inlet 3, and 2 top of absorption tower is provided with kiln gas gas outlet
4, aerosol cohesion washing layer 5, spraying layer 6, circulating cooling layer 7 are disposed with along smoke movement direction inside the prewashing tower 1.
The circulating cooling layer 7 connects successively with cooling water tank 10, the cycle of cooling water pump 9.The spraying layer 6 and Sprayer Circulation water pump 8
Cycle connection.12 inner upper of interface channel is provided with spray gun 11.The circulating cooling layer 7 includes 13 He of cooling water pipe
The cooling water pipe 13 is fixed on the inner wall of the prewashing tower 1 by water pipe fixing device 15, the water pipe fixing device 15.It is described
Circulating cooling layer 7 includes the flow slowing down net 14 being arranged on around 13 tube body of cooling water pipe, and the flow slowing down net 14 is
Porous wire netting.
Preferably, the cooling water pipe 13 is from top to bottom multilayer equidistant placement, and quadrature arrangement between upper and lower two layers, institute
It states cooling water pipe 13 and shares 10-20 layers, the ratio between the distance between every layer and the caliber of the cooling water pipe 13 are 1:1-3.It is this
Arrangement, space availability ratio is high, good cooling results.
Preferably, on the flow slowing down net 14 arrangement and under be disposed with three layers, top layer's screen size is 2.00-
4.00mm, that is, 5 mesh to 10 mesh, middle layer screen pore size are 2.00-0.850mm, that is, -20 mesh of 10 mesh, top layer's sieve
Pore size is 0.850-0.300mm, that is, -50 mesh of 20 mesh.Screen size is very few, the air resistance that comparison can be brought high, and
Screen size is excessive, will not bring relatively good slowing effect.Therefore, screen size is reduced successively using three layers, it can band
Carry out proper slowing effect, advantageously promote makings heat transfer.
Preferably, length of the cooling water pipe in prewashing tower inner height direction is the 1/4-1/3 of prewashing tower height degree.Only
Guaranteed certain height, had not only interfered with the pattern of prewashing tower entirety, but also can guarantee the time of contact of flue gas and cooling water, into
And ensure the efficiency of cooling.
Preferably, the spraying layer is connected with Sprayer Circulation water pump cycle, the flow set of the Sprayer Circulation water pump
For 10-20m3/ h, the flow set of the cooling water pump is 10-100m3/ h, the volume of the cooling water tank is 100-1000m3。
30000-50000Nm is generally according to standard fume amount3/ h, and flue-gas temperature is 130 DEG C or so, according to actual condition, design
Rational technological parameter ensure that air-flow cooling effect.
Preferably, the spray gun includes gun shot and nozzle, the nozzle is welded on one end of gun shot, the nozzle
Angle with gun shot is 90-180 °, and the nozzle is equipped with 3-20 spray orifice, and the spray orifice is evenly distributed on nozzle, described
The diameter range of spray orifice is 0.1-3mm；The other end of the gun shot is equipped with air hose and water pipe, the air hose and water pipe
Aperture ratio is 1：0.8~1.2, a diameter of 20-100mm of the air hose.
The direction of motion of absorption tower 2 along the kiln gas is disposed with washing tower tray, packing layer, spraying layer, electric demisting
Device, wet electrical dust precipitator.The washing tower tray is eddy flow gas cap tower tray.Described filler layer is ceramic packing.Wash tower tray, filler
The absorption tower washing layer of layer, spraying layer composition, realizes low concentration clear water three-level circulating water wash, to the ammonia and sulfuric acid of flue gas entrainment
Ammonium is washed, and can substantially reduce flue gas entrainment, water washing device and packing layer, is improved desulphurizing ability, is reduced aerosol
It generates, strengthens the trapping to subtle aerosol and washing, increase grain size, promote the removal efficiency to aerosol.Refer to patent one
The water washing device (CN 206343056U) of kind high efficiency removing aerosol.Before the electrostatic precipitator is arranged on wet electrical dust precipitator
It face can be with smooth air-flow；Wet electrical dust precipitator includes the cellular electroconductive frp anode tube of regular hexagon, titanium pole discharge lines and height
Pulased power supply unit is pressed, the output terminal connection titanium pole discharge lines of high-voltage pulse electric source device, the high-voltage pulse power source is base pressure
The high voltage power supply that superimposed pulse voltage integrates, titanium pole discharge lines are located at the center of anode tube.It refers to patent one kind and is based on arteries and veins
Rush the new and effective wet type electric precipitator (205887177 U of CN) of power supply.
Flue gas is handled using the present invention, on the basis of spraying layer cooling, is superimposed one layer of circulating cooling layer, increase and flue gas
Between carry out mass-and heat-transfer effect, be conducive to the absorption to subtle aerosol, coacervation, grain size increase, improve back segment electrostatic precipitator
Abjection ability is the deep purifying processing to flue gas.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is changed.Therefore, the invention is not limited in specific embodiment disclosed and described above, to the one of invention
A little modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, it although is used in this specification
Some specific terms, but these terms are merely for convenience of description, do not limit the present invention in any way.
Claims (10)
1. a kind of washing ammonia desulfuration equipment, including the prewashing tower connected by interface channel and absorption tower, the prewashing tower top
Portion is provided with kiln gas air inlet, is provided with kiln gas gas outlet at the top of the absorption tower, which is characterized in that in the prewashing tower
Portion is disposed with aerosol cohesion washing layer, spraying layer, circulating cooling layer along smoke movement direction.
2. the apparatus according to claim 1, which is characterized in that the circulating cooling layer successively with cooling water tank, cooling water
Pump circulation connects.
3. the apparatus of claim 2, which is characterized in that the circulating cooling layer includes cooling water pipe and water pipe is consolidated
Determine device, the cooling water pipe is fixed on the inner wall of the prewashing tower by the water pipe fixing device.
4. device according to claim 3, which is characterized in that the circulating cooling layer includes being arranged on the cooling water pipe
Flow slowing down net around tube body, the flow slowing down net are porous wire netting.
5. device according to claim 3 or 4, which is characterized in that the cooling water pipe is the equidistant cloth of multilayer from top to bottom
Put, quadrature arrangement between upper and lower two layers, the cooling water pipe shares 10-20 layers, the distance between every layer with the cooling water pipe
The ratio between caliber be 1:1-3.
6. device according to claim 4, which is characterized in that be disposed with three under on the flow slowing down network arrangements
Layer, top layer's screen size are 2.00-4.00mm, and middle layer screen pore size is 2.00-0.850mm, and top layer's screen size is
0.850-0.300mm。
7. device according to claim 3 or 4, which is characterized in that the cooling water pipe is in prewashing tower inner height direction
Length is the 1/4-1/3 of prewashing tower height degree.
8. the apparatus of claim 2, which is characterized in that the spraying layer is connected with Sprayer Circulation water pump cycle, institute
The flow set for stating Sprayer Circulation water pump is 10-20m3/ h, the flow set of the cooling water pump is 10-100m3/ h is described cold
But the volume of water tank is 100-1000m3。
9. device according to claim 1 or 2, which is characterized in that the interface channel inner upper is provided with spray gun.
10. device according to claim 9, which is characterized in that the spray gun includes gun shot and nozzle, the nozzle weldering
It is connected on one end of gun shot, the angle of the nozzle and gun shot is 90-180 °, and the nozzle is equipped with 3-20 spray orifice, described
Spray orifice is evenly distributed on nozzle, and the diameter range of the spray orifice is 0.1-3mm；The other end of the gun shot is equipped with air hose
And water pipe, the aperture ratio of the air hose and water pipe is 1：0.8~1.2, a diameter of 20-100mm of the air hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810275933.XA CN108261910A (en) | 2018-03-30 | 2018-03-30 | A kind of washing ammonia desulfuration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810275933.XA CN108261910A (en) | 2018-03-30 | 2018-03-30 | A kind of washing ammonia desulfuration equipment |
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| CN108261910A true CN108261910A (en) | 2018-07-10 |
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| CN201810275933.XA Pending CN108261910A (en) | 2018-03-30 | 2018-03-30 | A kind of washing ammonia desulfuration equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108619880A (en) * | 2018-07-24 | 2018-10-09 | 中电环保科技发展有限公司 | A kind of drying garbage flue gas processing device and its technique |
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| CN103575132A (en) * | 2012-07-20 | 2014-02-12 | 广州市华德工业有限公司 | Efficient heat exchange tube fin for filler coupling coil evaporative condenser |
| CN107213732A (en) * | 2017-05-26 | 2017-09-29 | 北京哈宜节能环保科技开发股份有限公司 | Vapor, TDS and SO in wet desulfurization flue gas3Removal methods and device |
| CN107469580A (en) * | 2017-09-30 | 2017-12-15 | 广东佳德环保科技有限公司 | A kind of wet flue gas desulfurizing and hydrargyrum-removing dust removal integrated plant and technique |
| CN208229653U (en) * | 2018-03-30 | 2018-12-14 | 广东佳德环保科技有限公司 | A kind of washing ammonia desulfuration equipment |
-
2018
- 2018-03-30 CN CN201810275933.XA patent/CN108261910A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575132A (en) * | 2012-07-20 | 2014-02-12 | 广州市华德工业有限公司 | Efficient heat exchange tube fin for filler coupling coil evaporative condenser |
| CN107213732A (en) * | 2017-05-26 | 2017-09-29 | 北京哈宜节能环保科技开发股份有限公司 | Vapor, TDS and SO in wet desulfurization flue gas3Removal methods and device |
| CN107469580A (en) * | 2017-09-30 | 2017-12-15 | 广东佳德环保科技有限公司 | A kind of wet flue gas desulfurizing and hydrargyrum-removing dust removal integrated plant and technique |
| CN208229653U (en) * | 2018-03-30 | 2018-12-14 | 广东佳德环保科技有限公司 | A kind of washing ammonia desulfuration equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108619880A (en) * | 2018-07-24 | 2018-10-09 | 中电环保科技发展有限公司 | A kind of drying garbage flue gas processing device and its technique |
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