CN207605592U - A kind of high-efficient atomizing desulfurizer - Google Patents
A kind of high-efficient atomizing desulfurizer Download PDFInfo
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- CN207605592U CN207605592U CN201721554400.2U CN201721554400U CN207605592U CN 207605592 U CN207605592 U CN 207605592U CN 201721554400 U CN201721554400 U CN 201721554400U CN 207605592 U CN207605592 U CN 207605592U
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Abstract
The utility model discloses a kind of high-efficient atomizing desulfurizer, which includes pulverized limestone feeding and stocking system, lime slurry preparation system, lime slurry transfer system, lime slurry stocking system, lime slurry spraying system, desulphurization catalyst stocking system and desulphurization catalyst spraying system；The outlet of the pulverized limestone feeding and stocking system is connect with the entrance of the lime slurry preparation system；The outlet of the lime slurry preparation system is connect by the lime slurry transfer system with the entrance of the lime slurry stocking system；The outlet of the lime slurry stocking system is connect by the lime slurry transfer system with the entrance of the lime slurry spraying system；The outlet of the desulphurization catalyst stocking system is connect with the entrance of the desulphurization catalyst spraying system.The utility model is simple in structure, and low input, low cost, low energy consumption, desulfuration efficiency are up to 95% or more；SO3Almost all removes.
Description
Technical field
The utility model is related to field of environment protection, and in particular to the desulfurization of cement producing line, more particularly to it is a kind of efficient
It is atomized desulfurizer.
Background technology
One, the source of sulphur and existing form in cement production process
There are mainly two ways in the source of sulphur in cement production process, and one is derived from raw material, and two are derived from fuel.It is raw
Expect that the sulphur content contained is organic sulfur, sulfide and sulfate.
Table 1：Raw material contain Sulfur Analysis
Organic sulfur is the organic compound of sulphur, and sulfide is mainly FeS2And a small amount of PbS, ZnS, sulfate mainly have
CaSO4、Na2SO4、K2SO4.In pre-heating system, when temperature of charge is less than 200 DEG C, organic sulfur is at SO2, and in material
When temperature is 400-600 DEG C, FeS2It is aoxidized, generates Fe2O3And SO2.The SO that organic sulfur and sulfide oxidation generate2It is logical with flue gas
Top preheater is crossed to raw mill and preheater, in the process, SO2With CaCO3Effect generates CaSO3And CO2.In preheater
In system, the SO of organic sulfur and sulfide oxidation generation2, usually there is 50-55% and CaCO3Effect, the SO of remaining 45-50%2
Exclude pre-heating system.
In raw material mill, bag dust collecting system, still there is a certain amount of SO2With CaCO3It acts on, lime stone (CaCO in raw mill3) hold
It is continuous to generate fresh surface, while powder has the longer residence time；In addition gas temperature usually has been reduced to 200 DEG C in raw mill
Hereinafter, therefore relative humidity is higher.Although lower temperature can reduce desulphurization reaction rate, the material in view of participating in reaction is gathered around
There are huge response area, longer residence time, while vapor also can promote desulphurization reaction to carry out, sulphur is de- in raw mill
Except rate is still very considerable.
Sulfate in raw material, melting temperature, decomposition temperature, volatilization temperature are higher under normal circumstances, as clinker at
It is divided into kiln.
The existence form of sulphur in fuel has sulfide, sulfate to also have organic sulfur as in raw material.Fuel is dividing
It solves stove or rotary kiln burning generates SO2, there is a large amount of activity CaO in dore furnace, while the temperature of dore furnace is exactly desulfurization
React the optimum range occurred, therefore the SO that clinkering zone generates2Gas can be absorbed by CaO in dore furnace or in intermediate zone and
Clinkering zone is combined with alkali generates sulfate.Part of sulfuric acid salt acts on if there are reducing atmosphere with C during clinker burning,
Decompose to give off SO2, generation sulfate is then reuptaked again, forms sulfur cycle；And the sulfate not being decomposed then becomes ripe
Expect component.That is under normal circumstances, the sulphur in fuel seldom influences whether the discharge of sulphur.But meeting in the case of these below
It makes an exception：
(1) burning of fuel carries out under reduction situation；
(2) burnability of raw material is very poor, and burning zone temperature is raised very high；
(3) sulfurbased NPK is obviously higher.
Two, traditional desulfurization technology has in-furnace calcium spraying, hot raw material spray, wet desulphurization etc., technical indicator and main bad
Gesture is shown in such as the following table 2：
Table 2
There is an urgent need for research and develop a kind of desulfurizer that can overcome above-mentioned traditional desulfurization technological deficiency for this field.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of high-efficient atomizing desulfurizers, and the present apparatus is simple in structure,
Low input, low cost, low energy consumption, high efficiency, construction cost are the 1/5 of wet desulphurization, and operating cost is other desulfurization technologies
1/3.Desulfuration efficiency is up to 95% or more；SO3Almost all removes.
In order to solve the above technical problems, the utility model provides a kind of high-efficient atomizing desulfurizer, which includes lime
Powder feeding and stocking system, lime slurry preparation system, lime slurry transfer system, lime slurry stocking system, lime slurry
Spraying system, desulphurization catalyst stocking system and desulphurization catalyst spraying system；The pulverized limestone feeding and stocking system go out
Mouth is connect with the entrance of the lime slurry preparation system；The outlet of the lime slurry preparation system passes through the lime slurry
Transfer system is connect with the entrance of the lime slurry stocking system；The outlet of the lime slurry stocking system passes through the stone
Grey slurries transfer system is connect with the entrance of the lime slurry spraying system；The outlet of the desulphurization catalyst stocking system with
The entrance of the desulphurization catalyst spraying system connects.
As the preferred technical solution of the utility model, the pulverized limestone feeding and stocking system include lime powder tank car,
Lime powder bin, deduster；There are feeding port, feeding ports to be connected with the lime powder tank car on the lime powder bin top, the stone
Ashes the top of the warehouse is equipped with deduster.
As the preferred technical solution of the utility model, the lime powder bin top is cylindrical, and lower part is tapered, pulverized limestone
The tapered lower portion in storehouse connects compressed air reservoir.
As the preferred technical solution of the utility model, the lime slurry preparation system includes that digester, digester stir
Mix device, wet scrubber；It is equipped with digestion jar agitator in the digester, wet scrubber is set at the top of the digester.
As the preferred technical solution of the utility model, the lime powder bin bottom from top to bottom be equipped with hand operated gate valve,
Star-like feeder；Small feed bin of weighing is equipped at the top of the digester, the star-like feeder and the small feed bin of weighing pass through spiral shell
Revolve conveyer connection.
As the preferred technical solution of the utility model, the lime slurry transfer system is pump.
As the preferred technical solution of the utility model, the lime slurry stocking system is holding vessel, in the holding vessel
It is furnished with blender in portion.
As the preferred technical solution of the utility model, the lime slurry spraying system includes conditioning Tower, raw mill, pre-
Hot device；Spray gun is equipped in the conditioning Tower, raw mill and preheater, the spray gun gas circuit connects with the compressed air reservoir
It connects；The desulphurization catalyst spraying system includes catalyst transport dedicated pump and preheater；The desulphurization catalyst stocking system
Outlet connect with the entrance of the preheater by the catalyst transport dedicated pump.
The principles of the present invention are illustrated below：
1 quicklime slaking
NSDD desulfurization technology is with quick lime (CaO) for absorbent, and in digester plus quick lime is prepared into calcium hydroxide by water
(Ca(OH)2) slurries, then by calcium hydroxide (Ca (OH)2) slurries penetrating flue.Absorbent and flue gas are mixed in flue
Splice grafting touch, strong physical-chemical reaction occurs, on the one hand with SO in flue gas2Reaction generates calcium sulfite, another aspect flue gas
Cooling, the drying of absorbent moisture evaporation reaches removing SO2Purpose, while generating solid, powdery desulfurizing byproduct.
The evaporation of 2 slurry drops
Drop since evaporation to the drying required time, it is extremely important to desulfurization degree.Influence the droplet drying time because
It is known as droplet size, drop water content and becomes into the temperature value of thermal insulation saturation.
The slurry drop that atomizer comes out, can be considered isolated Ca (OH)2Continuous liquid phase is dispersed with around particle.Absorbent
Grain dissolving in the liquid phase, saturation state is in slurry drips.The drying of drop is roughly divided into two stages：First stage is due to slurry
Solid content is little in feed liquid drop, substantially belongs to freely evaporating for droplet surface water, evaporation rate is fast and relative constant.Moisture
The surface for being happened at slurry drop, this stage is known as constant rate drying period.There are about 50% absorbing reactions to be happened at the rank
Section, required time is about 1 to 2 second.
With the progress of evaporation, the volume of liquid phase is constantly reduced, and until solid particle is in contact, is collected at the table of slurry drop
Face forms a fixed barrier layer, and which limit the evaporation of moisture and SO2Absorption rate, this stage is known as reduction of speed
Drying stage.Finally, most of free water phases in product solid are evaporated, and see Fig. 1.
Flue spraying device, the device carry out humidification activation for reducing flue-gas temperature to former reaction product, by humidification
The Ca (OH) being located at originally after activation inside reactant layer2It is migrated to surface inside particle, and forms sub-micron
Grade particulate, is deposited on particle surface or is mutually mingled with surface layer product layer.Migration also changes local pore structure.These are comprehensive
Closing effect makes reactant regain reactivity.Simultaneously by with fierce turbulence, the particle that possesses huge surface area makees
It for carrier, is adequately evaporated in flue, ensure that the ash into follow-up deduster has good flow regime.
SO in 3 flue gases2Absorption
In being spray-dried reactor, lime slurry be atomized for fine lime slurry droplet (<100 μm) with high-temperature flue gas phase
It contacts, complicated mass transfer, heat transfer effect occurs between gas, liquid, solid three-phase.In slurry drop while moisture evaporation, the SO in flue gas2
It is absorbed and the Ca (OH) in slurry drop2Particle reacts, and finally obtains dry CaSO4、CaSO3With unreacted Ca (OH)2
Solid mixture is collected through dust collecting system.
4 chemical reaction processes
Ca(OH)2(s)+SO2(g)+H2O(s)→CaSO3(s)+2H2O(g) (1)
Reaction can be divided into following steps：
(1) quicklime slaking
CaO(S)+H2O(l)→Ca(OH)2(l) (3)
(2) diffusions of the SO2 from gas phase main body to droplet surface
SO2(g)→SO2(aq) (4)
(3) the SO2 dissociations dissolved in liquid phase generate HSO3 -And SO3 2-
(4) HSO of liquid phase dissolved3 -、SO3 2-The diffusion of ion in the liquid phase
(5)Ca(OH)2The dissolving of particle
Ca(OH)2(S)→Ca2+(aq)+2OH-(aq) (7)
(6) generation of calcium sulfite
(7) CaSO in drop3Supersaturated Precipitation
CaSO3(aq)→CaSO3(s) (9)
(8) part CaSO3(aq) the be oxidized to CaSO of oxygen being dissolved in drop4
(9)CaSO4It is insoluble in water, it will rapid Precipitation solid-state CaSO4
CaSO4(aq)→CaSO4(s) (11)
The progress of key reaction (4), (5), (6) and (7) is completed in the liquid phase, and the evaporation rate of moisture is direct in slurry drop
Affect SO2Removing.
5 catalytic desulfurizations
In SO2Accumulation regions C2To C1Suitable temperature range at uptake flue, atomization spray into activated desulphurization catalyst
Solution, make desulphurization catalyst (preferably NSDD- materials) quickly with the SO in flue gas2, raw material and desulfurizing agent is promoted to fix in flue gas
SO2。
NSDD- material high-efficient atomizing desulfurization technologies have simple system, operation and maintenance side compared with traditional wet desulphurization
Just, small investment, operating cost are low, the advantages that being discharged without lime-ash.
NSDD- material high-efficient atomizing sulfur removal technologies make absorbent with quick lime (main component is CaO).Quick lime is through curing
Becoming the white lime with preferable respond, (main component is Ca (OH)2) slurries.White lime slurries are through filling atomizer injection
At uniform droplet, mist particle diameter is less than 100 μm.These particles have prodigious specific surface area, in flue contain titanium dioxide
Strong heat exchange and chemical reaction occur for sulphur smoke contacts, and the moisture in lime white droplet is evaporated by the sensible heat of flue gas, and two
Sulfur oxide is absorbed by lime slurry droplet simultaneously.
When opening raw mill, droplet, which is entered in mill by entering to grind flue, to react with the sulfur dioxide in flue gas, due to humidity in mill
Greatly, reactant residence time is long, SO2Removal effect is considerable, and product enters kiln with material and is fixed in clinker together；Desulfurization is urged
Agent is in SO2Accumulation regions C2To C1Rise atomization at air hose and spray into activated desulfurization catalyst agent solution, extends the anti-of desulfurizing agent
Between seasonable, the contact area between material is increased, effectively the SO of capture escape2, raw material and desulfurizing agent can be promoted to fix flue gas
In SO2。
Influence SO2The factor of removal rate includes degree of the flue gas exit temperature close to adiabatic saturation temperature, absorbent equivalent
Than and SO2Entrance concentration.In NSDD- new material high-efficient atomizing sulfur removal technologies, other sour gas in flue gas are SO3Deng
Also can simultaneously with Ca (OH)2Reaction, and SO3Removal efficiency is up to 90%, much larger than SO in wet desulfurizing process3Removal efficiency.It should
System flue gas pressures drop is moderate, and absorbing liquid conveying capacity is small, and system energy consumption is relatively low；The course of work cleans, and no waste water generates；Product
For solid-state, it is easily processed；Flow is simple, equipment is reliable, easy to run and safeguard.
Compared with prior art, the beneficial effects of the utility model are：
1, simple system, low input, low cost, low energy consumption, high efficiency, construction cost is the 1/5 of wet desulphurization, operation at
Originally it is the 1/3 of other desulfurization technologies.
2, desulfurization rapidly：Initial sulphur emissions<500mg/Nm3, feed intake 5 minutes SO2Discharge is rapidly reduced to 50mg/Nm3With
Under, desulfuration efficiency is up to 95% or more；SO3Almost all removes.
3, reliable for operation, it not will produce dirt and blocking；Desulfurization product is dry state, is easily handled, and no waste water generates；For
The corrosivity of equipment is not high, and equipment is without doing anti-corrosion.
4, effect integrates：Desulfurizing agent promotes 1MPa or so, NO using rear clinker high early strengthXReduce 30-80mg/Nm3。
5, floor space is small, and installed power is small, and the construction period is no more than 60 days.
Description of the drawings
Fig. 1 is a kind of desulfurization principle schematic diagram of NSDD of the utility model-new material high-efficient atomizing desulfurizer.
Fig. 2 is a kind of structural schematic diagram of NSDD of the utility model-new material high-efficient atomizing desulfurizer.
Fig. 3 is the structural schematic diagram of the compressed air system of the utility model.
The reference numerals are as follows in figure：
1 is lime powder tank car；2 be lime powder bin；3 be deduster；4 be compressed air reservoir；5 be hand operated gate valve；6 are
Star-like feeder；7 be screw conveyor；8 be small feed bin of weighing；9 be digester；10 be digestion jar agitator；11 be that wet type is removed
Dirt device；12 be calcium hydroxide slurries shifting pump；13 be holding vessel；14 be storage jar agitator；15 be calcium hydroxide slurry feeding pump；16
It is conditioning Tower；17 be raw mill；18 be preheater；19 be catalyst tank；20 be catalyst transport dedicated pump, and 21 be in conditioning Tower
Spray gun, 22 be spray gun in raw mill, and 23 be spray gun in preheater.
Specific implementation mode
The utility model is furtherd elucidate with reference to specific embodiment, but these embodiments are only intended to illustrate this practicality
It is novel, rather than to limit the scope of the utility model.
Embodiment
As shown in Fig. 2, the utility model provides a kind of NSDD-new material high-efficient atomizing desulfurizer, including on pulverized limestone
Material and stocking system (including lime powder tank car 1, lime powder bin 2, deduster 3), lime slurry preparation system (including digester 9,
Digest jar agitator 10, wet scrubber 11), lime slurry transfer system (calcium hydroxide slurries shifting pump 12), lime slurry storage
Deposit system (holding vessel 13, storage jar agitator 14), lime slurry spraying system (calcium hydroxide slurry feeding pump 15, conditioning Tower 16,
Raw mill 17, preheater 18 are equipped with spray gun in conditioning Tower 16, raw mill 17 and preheater 18), desulphurization catalyst stocking system
(catalyst tank 19), desulphurization catalyst spraying system (catalyst transport dedicated pump 20, preheater 18), compressed air system (pressure
Contracting air reservoir 4) etc. compositions.
There are feeding port, feeding ports to be connected with lime powder tank car 1 on lime powder bin 2 top, and 2 top of lime powder bin is equipped with dedusting
Device 3 ensures in discharging at the top of powder cabin without airborne dust.2 top of lime powder bin is cylindrical, and lower part is tapered, the cone of lime powder bin 2
Shape lower part (i.e. tapering) is then passed through compressed air, and it is in fluidized state to make quick lime in lime powder bin 2, and quick lime is avoided to glue wall knot arch
And it is difficult to blanking, compressed air is then provided by dosing area compressed air reservoir 4.The specific weight of quick lime discharging is then small by weighing
Feed bin 8 is measured, and the lime powder to get off passes sequentially through hand operated gate valve 5, star-like feeder 6, screw conveyor 7 and is delivered to
Weigh small feed bin 8 (hand operated gate valve 5 for control either on or off allow lime out of powder cabin under to screw conveyor 7, it is star-like to give
Glassware 6 can adjust the speed that screw conveyor 7 is arrived under lime with variable frequency adjustment), weigh what small feed bin 8 was covered with digester 9
Water mixes, and by the stirring for the digestion jar agitator 10 that 9 inside of digester configures, it is molten to be prepared into certain density calcium hydroxide
Liquid.Wet scrubber 11 is arranged in 9 top of digester, prevents having flue dust to emerge during preparing slurries.Prepare disappearing for completion
Lime slurry is transferred to by calcium hydroxide shifting pump 12 in holding vessel 13, and 13 inside of holding vessel is equipped with blender 14 to prevent niter
Isolation precipitation occurs for grey slurries, and the outlet of holding vessel 13 connection calcium hydroxide slurry feeding pump 15, slurries are conveyed by calcium hydroxide slurries
Pump 15 is delivered to 18 suitable position of conditioning Tower 16, raw mill 17 and preheater.In conditioning Tower 16, raw mill 17 and preheater 18
Equipped with spray gun.
Atomizing lance is equipped in raw mill 17, calcium hydroxide slurries are by atomizing lance in 17 blast pipe suitable temperature window of raw mill
It is atomized and sprays at mouthful so that calcium hydroxide slurries and 17 wind inner tube smoke hybrid reaction of raw mill, to reach reduction firing system
SO in flue gas2Purpose；When raw mill 17 is shut down, calcium hydroxide slurries spray into conditioning Tower 16 and carry out desulphurization reaction after atomization.
Catalyst tank 19 is arranged in the storage of desulphurization catalyst, and catalyst by manually filling into, urge by the outlet of catalyst tank 19 setting
Desulphurization catalyst is injected to pre- by agent transport dedicated pump 20 by the spray gun in catalyst transport dedicated pump 20 and preheater 18
18 suitable position of hot device is reacted together with the calcium hydroxide slurries conveyed by calcium hydroxide slurry feeding pump 15, reaches quickly solid
The purpose of sulphur.
When raw mill 17 is not shut down, when sulfur dioxide concentration is exceeded, calcium hydroxide slurries are pushed up by atomizing lance in conditioning Tower 16
Portion's atomization sprays into, and desulphurization catalyst is ejected into 18 suitable position of preheater by atomizing lance so that calcium hydroxide slurries and conditioning Tower
16 top flue gas hybrid reactions, desulphurization catalyst is reacted with flue gas at 18 suitable position uptake flue of preheater, to reach
To the purpose for reducing SO2 in firing system flue gas；
When raw mill 17 is shut down, when sulfur dioxide concentration is exceeded, calcium hydroxide slurries are entered the wind by atomizing lance in raw mill 17
It is atomized and sprays at pipe suitable temperature window, desulphurization catalyst is ejected into 18 suitable position of preheater by atomizing lance so that niter
Grey slurries and 17 wind inner tube smoke hybrid reaction of raw mill, desulphurization catalyst and flue gas at 18 suitable position uptake flue of preheater
It is reacted, to achieve the purpose that reduce SO2 in firing system flue gas；
Calcium hydroxide slurries and desulfurizing agent are defeated by calcium hydroxide slurry feeding pump 15 and catalyst transport dedicated pump 20 respectively
It is sent to corresponding position to be reacted, and starts simultaneously, the effect of desulfurization can be played, the dosage specifically sprayed is according to two
The concentration of sulfur oxide is adjusted.
The desulfurizing agent that this sulfur removal technology uses easily takes the mode in locality purchase, desulfurization catalyst for dry state calcium lime powder
Agent is preferably NSDD- materials (melting Ingegneria Ambientale SRL purchased from Shanghai three).
The utility model high-efficient atomizing desulfurizer includes mainly following system：Quick lime feeding and stocking system；
Quicklime slaking reaction system；Calcium hydroxide stocking system；Slurries spraying system；Desulphurization catalyst stocking system；Desulphurization catalyst
Spraying system；Automatic control system；Compressed air system；The anti-corrosion of tank body and pipeline, heat preservation, flushing and security protection etc. are matched
Cover auxiliary equipment.
1) quick lime feeding and stocking system
Outsourcing quick lime (purity ＞ 85%) is conveyed into factory by lime powder tank car 1, the air carried using lime powder tank car 1
Quick lime is delivered to lime powder bin 2 by compressor, and the weighed small feed bin 8 of quick lime is delivered to digester 9 after measuring.Lime powder bin
Dedusters 3 (for example, high-efficiency bag type dust remover) are arranged in 2 tops, and maximum dust content is less than 30mg/ in the clean gas after dedusting
Nm3.The tapering of lime powder bin 2 is then passed through compressed air, and it is in fluidized state to make quick lime in lime powder bin 2, avoids quick lime viscous
Wall knot encircles and is difficult to blanking, and the specific weight of quick lime discharging is then measured by small feed bin 8 of weighing.In addition, quick lime Cang2Ding
Portion be provided with roof scrubber 3, sealing manhole door it is convenient to overhaul, which is designed to be opened rapidly with hinge and handle, and
And emergency vent valve is arranged at top, rapid pressure release when excessive to prevent powder cabin pressure.
2) lime slurry preparation system
Quick lime, which reacts in digester 9 with water, generates calcium hydroxide solution, in the case where controlling certain water, continues
Increase quick lime, under the action of digesting jar agitator 10, forms the calcium hydroxide slurries that mass concentration is 15% to 30%.
3) lime slurry stocking system
Calcium hydroxide slurries are delivered to calcium hydroxide holding vessel 13 through calcium hydroxide shifting pump 12, and 13 top of calcium hydroxide holding vessel is furnished with
Blender 14 is to prevent calcium hydroxide slurries from isolation precipitation occurs, and the calcium hydroxide breast of allotment is after flowmeter measures in calcium hydroxide
It is delivered to spraying system under the action of slurry feeding pump 15.
Digester 9 and holding vessel 13 are all made of carbon steel anti-corrosion material and are equipped with waste liquid rinse-system；Liquid level gauge and peace are set
Full relief valve can detect tank level in real time, ensure equipment operational safety；Configuration slurries pump two (the using and the reserved) to ensure
The reliability of desulphurization system.
4) lime slurry spraying system
Calcium hydroxide slurries are atomized in 17 blast pipe suitable temperature window of raw mill by atomizing lance and are sprayed into so that calcium hydroxide
Slurries and 17 wind inner tube smoke hybrid reaction of raw mill reduce SO in firing system flue gas to reach2Purpose；Work as raw mill
When 17 shutdown, calcium hydroxide slurries spray into conditioning Tower 16 and carry out desulphurization reaction after atomization.
5) desulphurization catalyst stocking system and desulphurization catalyst spraying system
Catalyst tank 19 is arranged in the storage of desulphurization catalyst, and catalyst by manually filling into, urge by the outlet of catalyst tank 19 setting
Desulphurization catalyst is injected to 18 suitable position of preheater by catalyst transport dedicated pump 20 and carried out by agent transport dedicated pump 20
Reaction, achievees the purpose that quickly to consolidate sulphur.
6) automatic control system
Whole system is controlled using PLC, and data communication is kept with main process control system DCS.Using high performance liquid
Electromagnetic flowmeter accurately detects fluid flow, and couples with controller and other relevant devices.It can be supervised at any time using flowmeter
The simultaneously practical discharge rate of display system is controlled, while if when pump/pipeline/element occurs unexpected, system at once can be from the variation of flow
It obtains relevant information to provide alarm and take pre-set scheme, system is easy to use, maintenance is timely.
7) compressed air system
As shown in figure 3, compressed air system is mainly the spray gun set into conditioning Tower 16, raw mill 17 and preheater 18
21, when 22,23 conveyings are used for high pressure gas and the shutdown of atomization low pressure purge gas is provided to spray gun.21,22,23 gas circuit of spray gun
It is connect with compressed air reservoir 4；Gas pressure is controlled in 0.4Mpa to 0.6MPa, system-down (no when system normal operation
When spraying), it also should normally supply, for cooling spray and prevent spray gun from blocking.The compressed air of the utility model is quoted from existing
Compressed air pipe it is grid-connected, compressed air reservoir 4 is arranged in desulphurization system, and compressed air enters after leaving compressed air reservoir 4
Compressed air is arranged in spray gun 21,22,23 before all 21,22,23 imports of spray gun, the pressure gauge of calcium hydroxide slurries carries out spray gun
Atomization control and shunting use.Connection by metal hose, spray gun is used to be arranged as detachably between spray gun 21,22,23 and pipeline
Mode, site setup spray gun bearing carry out the dismounting of spray gun using manual mode.When spray gun overhauls or does not need work,
Spray gun is extracted out out of system manually, is temporarily placed on live holder.Spray gun is cleaned to be carried out using compressed air.
The utility model high-efficient atomizing desulfurizer is shown in Table 3 with traditional desulfurization technology the key technical indexes comparison：
Table 3
As it can be seen that the utility model compared with traditional desulfurization technology, has following clear superiority：With good investment, operating cost is low,
It takes up little area, low energy consumption, and desulfuration efficiency is high, and desulfurization rate is fast, no lime-ash discharge.
Claims (8)
1. a kind of high-efficient atomizing desulfurizer, which is characterized in that the device includes pulverized limestone feeding and stocking system, lime slurry
Preparation system, lime slurry transfer system, lime slurry stocking system, lime slurry spraying system, desulphurization catalyst storage system
System and desulphurization catalyst spraying system；The outlet of the pulverized limestone feeding and stocking system and the lime slurry preparation system
Entrance connects；The outlet of the lime slurry preparation system is stored by the lime slurry transfer system and the lime slurry
The entrance of system connects；The outlet of the lime slurry stocking system passes through the lime slurry transfer system and the lime white
The entrance of liquid spraying system connects；The outlet of the desulphurization catalyst stocking system and entering for the desulphurization catalyst spraying system
Mouth connection.
2. device as described in claim 1, which is characterized in that the pulverized limestone feeding and stocking system include pulverized limestone tank
Vehicle, lime powder bin, deduster；There are feeding ports on the lime powder bin top, and feeding port is connected with the lime powder tank car, described
Deduster is equipped at the top of lime powder bin.
3. device as claimed in claim 1 or 2, which is characterized in that the lime powder bin top is cylindrical, and lower part is tapered,
The tapered lower portion of lime powder bin connects compressed air reservoir.
4. device as claimed in claim 1 or 2, which is characterized in that the lime slurry preparation system includes digester, digestion
Jar agitator, wet scrubber；It is equipped with digestion jar agitator in the digester, wet dust removal is set at the top of the digester
Device.
5. device as claimed in claim 4, which is characterized in that the lime powder bin bottom is from top to bottom equipped with Manual flashboard
Valve, star-like feeder；Small feed bin of weighing is equipped at the top of the digester, the star-like feeder and the small feed bin of weighing pass through
Screw conveyor connects.
6. device as described in claim 1, which is characterized in that the lime slurry transfer system is pump.
7. device as described in claim 1, which is characterized in that the lime slurry stocking system is holding vessel, the holding vessel
It is furnished with blender in inside.
8. device as claimed in claim 3, which is characterized in that the lime slurry spraying system include conditioning Tower, raw mill,
Preheater；Spray gun is equipped in the conditioning Tower, raw mill and preheater, the spray gun gas circuit connects with the compressed air reservoir
It connects；The desulphurization catalyst spraying system includes catalyst transport dedicated pump and preheater；The desulphurization catalyst stocking system
Outlet connect with the entrance of the preheater by the catalyst transport dedicated pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721554400.2U CN207605592U (en) | 2017-11-20 | 2017-11-20 | A kind of high-efficient atomizing desulfurizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721554400.2U CN207605592U (en) | 2017-11-20 | 2017-11-20 | A kind of high-efficient atomizing desulfurizer |
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| Publication Number | Publication Date |
|---|---|
| CN207605592U true CN207605592U (en) | 2018-07-13 |
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ID=62795771
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| CN107754591A (en) * | 2017-11-20 | 2018-03-06 | 上海三融环保工程有限公司 | A kind of high-efficient atomizing desulfurizer and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107754591A (en) * | 2017-11-20 | 2018-03-06 | 上海三融环保工程有限公司 | A kind of high-efficient atomizing desulfurizer and method |
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Address after: Room B125, No. 45, Shanggang San Village, Sanlin Town, Pudong New Area, Shanghai, 200123 Patentee after: SHANGHAI SANRONG ENVIRONMENTAL PROTECTION ENGINEERING Co.,Ltd. Patentee after: Shanghai Sancheng New Material Technology Co.,Ltd. Address before: Room B125, No. 45, Shanggang San Village, Sanlin Town, Pudong New Area, Shanghai, 200123 Patentee before: SHANGHAI SANRONG ENVIRONMENTAL PROTECTION ENGINEERING Co.,Ltd. Patentee before: SHANGHAI SANCHENG ENERGY TECHNOLOGY Co.,Ltd. |
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