CN206310509U - Danger waste incineration system - Google Patents
Danger waste incineration system Download PDFInfo
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- CN206310509U CN206310509U CN201620824882.8U CN201620824882U CN206310509U CN 206310509 U CN206310509 U CN 206310509U CN 201620824882 U CN201620824882 U CN 201620824882U CN 206310509 U CN206310509 U CN 206310509U
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- slag
- feed system
- incinerator
- combustion chamber
- waste incineration
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Abstract
The utility model discloses one kind danger waste incineration system, the CIU includes feed system, incinerator and exhaust treatment system, wherein feed system includes bulk material feed system, sacked material feed system and liquid object feed system, respectively in continuous, closed mode to incinerator conveying bulk material, sacked material and liquid dangerous waste thing.Using danger waste incineration system of the present utility model, by the way that all kinds of dangerous waste things are carried out with calorific value and chemical compatibility, the technological parameter in accurate control incinerator, it is ensured that CIU is safe and stable and Effec-tive Function, make danger incineration of waste thoroughly, tail gas and slag efficient pollution-free are processed.
Description
Technical field
The utility model is related to a kind of danger waste incineration system.
Background technology
Danger wastes (dangerous waste thing) refer to corrosivity, toxicity, inflammability, reactivity or infectivity etc. it is a kind of or
The discarded object of several hazard properties of person.As industrial expansion, the dangerous waste thing of industrial processes discharge are increasing, how to enter
Row safely and efficiently processes environmentally safe significant.
In existing dangerous waste thing burning processing system, generally the dangerous waste thing of various forms is mixed and is temporarily stored into melt pit
It is interior, waste is picked up by claw bucket sling and enters kiln.It is this enter kiln mode cause kiln hood largely to leak out, cause oxygen content in kiln uncontrollable,
Incineration circumstances are disorderly in kiln, a series of problems, such as dual firing chamber's afterburning is frequent.And because the physical property of different dangerous waste things is different, it is mixed in one
Rise and be susceptible to danger, the country has occurred a lot of interior hole blasts, deflagration event.Additionally, " ground pit type " pan feeding mode is also easily produced
Raw Leachate site polluted underground water and soil, waste gas externally discharge the problem of environmental pollutions such as caused atmosphere pollution naturally.
Additionally, existing danger waste treatment system there is also many deficiencies, such as slag in slag and vent gas treatment
Water-cooled pattern is generally used, the vapor in cooling procedure enters the ignition temperature that dual firing chamber can reduce dual firing chamber, influence flue gas
After-flame quality, the slag after water-cooled generally using mode is dried, ooze in ground in slag by the sewage major part containing high pollution composition
Under, into secondary pollution.
Utility model content
The purpose of this utility model is to overcome certain or some problem in above-mentioned background technology, there is provided a kind of dangerous waste
Thing CIU.
According to danger waste incineration system of the present utility model, including feed system, incinerator and exhaust treatment system, its
Middle feed system includes bulk material feed system, sacked material feed system and liquid object feed system, respectively with continuous, closed
Mode is to incinerator conveying bulk material, sacked material and liquid dangerous waste thing.
In a specific embodiment of the present utility model, wherein bulk material feed system includes：
Feeding bin, with closing housing, housing is provided with material inlet and material outlet, and housing bottom is provided with spiral hinge
Knife；
First weigher, for being weighed to feeding bin；
Second weigher, is arranged on feeding bin lower section, for being weighed to discharging；And
Rotary feeder, import is connected with the second weigher, and outlet is connected with incinerator.
In another specific embodiment of the present utility model, wherein sacked material feed system includes suspended chain, hopper
And double-deck push-pull valve, sacked material is delivered to hopper by suspended chain, then is delivered to incinerator by double-deck push-pull valve.
In another preferred embodiment of the present utility model, wherein liquid object feed system includes multichannel nozzle, respectively
For conveying high heating value, middle calorific value and low heat value liquid.
In a specific embodiment of the present utility model, incinerator includes rotary kiln and secondary combustion chamber, rotary kiln
Kiln tail be connected with the lower seal of secondary combustion chamber.
In a preferred embodiment of the present utility model, temperature monitoring is respectively arranged with rotary kiln and secondary combustion chamber
Instrument and oxygen content monitor.
In another preferred embodiment of the present utility model, wherein secondary combustion chamber bottom is provided with air cooling slag hoist,
The air cooling slag hoist is provided with slag inlet, slag notch and air inlet；Wherein, incinerator burns the hot stove produced after danger wastes
Slag enters air cooling slag hoist through slag inlet, after the cold wind blasted from air inlet carries out heat exchange in air cooling slag hoist with hot slag
High temperature oxygenating is carried out into secondary combustion chamber, disturbance of the cold wind to secondary firing room temperature, the slag after cooling is greatly lowered
Discharged through slag notch.Slag after air-cooled can be fed directly to slag storehouse, it is to avoid the secondary dirt of waste water in water-cooled slag
Dye problem.
In the case of more specific, air cooling slag hoist includes shell body and the comb type cooling bed in shell body, shell body it is upper
Portion sets slag inlet, and comb type cooling bed includes：
Grate plate, grate plate front end is located at slag inlet lower section, and grate plate end is adjacent with slag notch；Multiple row motion is provided with grate plate
Beam, multiple stick pushers are arranged at intervals with each column motion beam；The length direction of stick pusher is perpendicular to slag conveying direction；In grate plate
It is evenly distributed with array air vent, the aperture of air vent is arranged to make that cold wind passes through from the bottom up but slag will not down leak
Go out；
Motion beam drive mechanism, is arranged on grate plate lower section, is back and forth transported back and forth along slag conveying direction for powered motion beam
It is dynamic, promote slag slowly to be wriggled to slag notch by stick pusher；
Air inlet pipeline, is arranged on grate plate lower section, and the cold wind entered from the air inlet of air inlet pipeline is uniformly blowed to after being allocated
The array air vent of grate plate.
In another specific embodiment of the present utility model, wherein exhaust treatment system include waste heat boiler, chilling tower,
Activated carbon dusting device, sack cleaner, active carbon adsorption column, washing deentrainment tower, flue gas heater, exhaust blower and chimney.
Under preferable case, wherein being additionally provided with SNCR denitration device between secondary combustion chamber and waste heat boiler.
It is accurate by the way that all kinds of dangerous waste things are carried out with calorific value and chemical compatibility using danger waste incineration system of the present utility model
The true technological parameter in control incinerator, it is ensured that CIU is safe and stable and Effec-tive Function, makes danger incineration of waste thoroughly,
Tail gas and slag efficient pollution-free are processed.
Brief description of the drawings
Fig. 1 is the feed system schematic diagram according to danger waste incineration system of the present utility model；
Fig. 2 is the incinerator schematic diagram according to danger waste incineration system of the present utility model；
Fig. 3 is the schematic perspective view of air cooling slag hoist in incinerator；
Fig. 4 is the comb type cooling bed schematic perspective view in the air cooling slag hoist that shows in Fig. 3；
Fig. 5 is the section view schematic front view of air cooling slag hoist shown in Fig. 3；And
Fig. 6 is the exhaust treatment system schematic diagram according to danger waste incineration system of the present utility model.
Specific embodiment
Describe danger waste incineration system of the present utility model in detail below in conjunction with the accompanying drawings.Those skilled in the art should manage
Solution, the embodiments described below is only to exemplary illustration of the present utility model, not for making any limitation to it.
Referring to Fig. 1-Fig. 6, feed system, incinerator are mainly included according to danger waste incineration system of the present utility model
100 and exhaust treatment system 500.The structure and the course of work of each system and device is described in detail below.
The compatibility and safe transport of all kinds of materials, advance by pending dangerous waste thing in the utility model for convenience
It is divided into bulk material, sacked material and liquid object three major types, the calorific value and chemical characteristic of same class material are close.Wherein, bulk material master
Refer to bulk of the particle diameter less than the X 80mm of 50 X 50 or granular solids.Sacked material is used for loading seal-packed extraordinary dangerous
The characteristics of discarded object, this kind of material is more active chemical property, is easily reacted with other materials, and with Strong oxdiative
Property, hypertoxicity or explosive, such as trivalent cobalt salt, peroxide, cyanide, perhalide etc., these material demand quilts
Isolation processing, to avoid blast or vigorous reaction occurs with other materials.After sacked material may also mean that paste allotment
(or should not) be packed or is difficult to crush and the solid material of mixing is directly packed.Liquid object is primarily referred to as waste liquid or waste oil.This reality
Corresponding feed system is separately designed with the new morphological character based on above-mentioned three major types material to be treated to incinerator conveying
Dangerous waste thing is burned, so as to effectively prevent the generation of deflagration event in existing " ground pit type " pan feeding mode.
Referring to Fig. 1, according to danger incineration of waste classification feed system of the present utility model mainly include bulk material feed system,
Sacked material feed system and liquid object feed system, respectively with continuous, closed mode to the conveying of incinerator 100 bulk material,
Sacked material and liquid dangerous waste thing.
Bulk material feed system is mainly included under feeding bin 201, the first weigher 203, the second weigher 205 and revolution
Glassware 206.Feeding bin 201 has closing housing, and housing is provided with material inlet 211 and material outlet 212.The housing of feeding bin 1
In can be provided with stock distributor 213, for dispersed material.The housing bottom of feeding bin 201 is provided with spiral reamer
204.Elevator (conveyer) 202 can be set in the front end of feeding bin 201, elevator 202 can lift bulk material 220
The top of feeding bin 201, and enter in feeding bin 201 from material inlet 211.
(gravity is relied on when being conveyed by storehouse formula due to bulk material), easily occur knot storehouse (flow stagnation) phenomenon in storehouse,
Once consequence is very serious caused by knot storehouse, the material from several to tens tons is often accommodated in storehouse, can only often disassemble feed bin
Material could be derived.In order to prevent and dissolving the generation of the phenomenon in advance, spy is provided with the first weigher 203 to the utility model
Prejudged with the second weigher 205.First weigher 203 is weighed for carrying out entirety to feeding bin 201, the second meter
Amount scale 205 is used for weighing the material sent out from the material outlet 212 of feeding bin 201.First weigher 203 is preferably used
Load sensor, is arranged on the outside of feeding bin 201.Second weigher 205 preferably uses volume measurement scale, so that can be continuous
Conveying material, and energy metering material volume, draw the weight of conveying material by being multiplied by material proportion with the volume of material of metering.
When feed system runs, (gravimetric value is m to the bulk material 220 to be burned being pre-metered0) enter from material inlet 211
Enter feeding bin 201, second weigher 205 is delivered to by spiral reamer 204 after disperseing through stock distributor 213, by second
Weigher 205 is conveyed through rotary feeder 206 after weighing to incinerator 100.One timing is measured by the second weigher 205
The interior weight of material conveyed to incinerator 100 is m2, the net thing in feeding bin 201 is measured by the first weigher 203
Material weight is m1.In continuous flow procedure, work as m0-m2When value stabilization is in predetermined range of normal value, in showing feeding bin 201
Flow of Goods and Materials is normal；And work as m1Value becomes larger, m0-m2When value exceedes predetermined normal value, then material in feeding bin 201 is imply that
Flowing starts to slow down, and continues development and goes down to occur to tie storehouse phenomenon.Operating personnel, can by the monitoring to above-mentioned gravimetric value
Give warning in advance, and take solving measure in advance.For example with air bubble from the bottom of feeding bin 201 to feeding bin 201 in squeeze into height
Pressure air is vibrated, so that knot storehouse phenomenon is just dissolved in the budding stage, so as to ensure continuous production, greatly improves production
Efficiency.
Bulk is conveyed to incinerator 100 using rotary feeder 206 in bulk material feed system of the present utility model
Material, can either continuous conveying material, can effectively block again in incinerator 100 burn the upward anti-channeling of hot-air high.According to this
The bulk material feed system of utility model, connecting pipe between elevator 202, elevator 202 and feeding bin 201 and feeds
Transfer pipeline between feed bin 201 and incinerator 100 is all using closed.Bulk material 220 is in course of conveying all in envelope
Closing in space is carried out, so as to prevent the pernicious gas volatilized in dangerous waste thing from outwardly discharging.In order to prevent elevator 202 and feed
There is deflagration accident in feed bin 201, the inner space of elevator 202 and feeding bin 201 all connects with extractor fan 209, exhausting
Device 209 can be connected with the entrance of incinerator 100, so as to the flammable explosive gas of extraction are passed directly into incinerator
100 are burnt.Dust-precipitator 208 can be set before extractor fan 209, the dust that dust-precipitator 208 is collected is by locking wind blanking device 219
It is delivered in elevator 202 and is conveyed to incinerator 100 again.In addition, being also provided with explosion-proof valve at the top of feeding bin 201
214, further ensure that safety.
Sacked material feed system mainly includes suspended chain 251, hopper 252 and upper push-pull valve 253 and underthrust plate valve
254.Charging start before, upper and lower push-pull valve 253 and 254 all in closed mode, when sacked material 250 falls into down from suspended chain 251
When in hopper 252, upper push-pull valve 253 is opened makes sacked material 250 fall on underthrust plate valve 254, then goes up push-pull valve 253 and closes,
Underthrust plate valve 254 is opened, sacked material 250 automatically falls into incinerator 100 and burned.By upper and lower two push-pull valves repeatedly
Cooperation can completely cut off the upward anti-channeling of hot-air high burnt in incinerator 100.Sacked material 250 is weighed and by controlling to hang in advance
The transporting velocity of chain 251 controls the charging rate of sacked material 250.
In a specific embodiment of the present utility model, the bulk material 220 and bag-shaped material of the conveying of bulk material feed system
The sacked material 250 of feed system conveying enters incinerator 100 by Y type blankings scraper-trough conveyer respectively, so as in preventing sacked material 50
Extraordinary dangerous waste thing and balk cargo come in contact before kiln is entered and cause blast.
Liquid object is first divided into liquid object feed system 300 three kinds of high heating value, middle calorific value and low heat value in advance, is sprayed using multichannel
Mouth is respectively intended to the conveying of incinerator 100 high heating value, middle calorific value and low heat value liquid.So as to according to incinerator 100
Technique need to select to supply the liquid of different calorific values.Liquid object feed system 300 is mainly filled using atomizing lance to burning
Put 100 injection liquid dangerous waste things.Flowmeter can be connected with before atomizing lance measure the inlet amount of liquid dangerous waste thing.
Referring to Fig. 2, incinerator 100 is made up of rotary kiln 110, secondary combustion chamber 120 and slag-tapping system.Rotary kiln
110 kiln hoods are connected (including solid feed system 200 and liquid object feed system 300, wherein solid charging with feed system
System 200 can be divided into bulk material feed system and sacked material feed system mentioned above again), kiln tail is and secondary combustion chamber
120 lower seal connection, the top of secondary combustion chamber 120 is connected by pipeline with exhaust treatment system 500, secondary combustion chamber
120 bottom is connected with slag-tapping system.Wherein, rotary kiln 110 and secondary combustion chamber 120 are also connected with natural gas station 400 respectively,
Carry out lighting a fire and combustion-supporting to rotary kiln 110 and secondary combustion chamber 120 respectively by auxiliary burner 401 and 402.Rotary kiln 110
With temperature monitor and oxygen content monitor are respectively arranged with secondary combustion chamber 120.
Rotary kiln 110 is that a horizontal circular has the rotatable stove of lining of fire brick, inner lining refractory block (50mm insulating bricks
+ 250mm mullite bricks), kiln external temperature is maintained at more than 175 DEG C, to prevent sour gas from corroding.On kiln body
There are two belt wheels and a bull gear, transmission mechanism drives the bull gear on body by little gear, then by bull gear band
Dynamic rotary kiln body is rotated.The transmission downward to ensure material, rotary kiln 110 must keep certain gradient, and this practicality is new
The axial line of rotary kiln 110 and horizontal line into 1.5 degree of angles in type.The rotation yardstick of kiln is preferably 0.2 to 2.0 turn per minute.Kiln
Interior volume heat load is 20~44kg/ (m3·h)。
The top of secondary combustion chamber 120 is cylindrical structure, and liner material is that high alumina turns+light weight fireclay brick+calcium silicate board, outward
Steel plated.The bottom of secondary combustion chamber 120 has taper necking, and taper necking bottom is provided with air cooling slag hoist 121.It is air-cooled to slag tap
Machine 121 is connected with the secondary blower 122 of outside.The volume heat load of secondary combustion chamber 120 is 15~40kJ/m3.h。
During burning, the bulk material 220 of different calorific values, sacked material 250 and liquid object are distinguished as after predetermined calorific value compatibility
In feeding rotary kiln 110, by being arranged on the primary blower 111 of kiln hood to blasting air in kiln, and by auxiliary combustion
Device 401 is lighted a fire.Under rotary kiln 110 continuously rotation, material does not stop to stir, heats, dries, decomposing gentle waste in kiln
Change.The ignition temperature of rotary kiln 110 is controlled at 700~850 DEG C, and, less than 2%, material is in rotary kiln for remaining Control for Oxygen Content
Residence time in 110 is about 20-45min.Under this process conditions, material is incinerated into high-temperature flue gas and slag.Burning
The flue gas of generation enters secondary combustion chamber 120 from kiln tail, is further burned herein.By secondary blower 122 to two
Level blasts Secondary Air in combustion chamber 120, and is carried out by auxiliary burner 402 combustion-supporting.By positioned at the flue gas of secondary combustion chamber 120
Thermocouple and oxygen content detector on exhaust pass controls auxiliary burner come oxygen content in detecting furnace temperature and exhaust
402 and the uninterrupted of secondary blower 122, make the temperature stabilization of secondary combustion chamber 120 in setting value, so that dangerous waste is burned
It is constantly in optimum state.In preferred embodiment of the present utility model, the ignition temperature control in secondary combustion chamber 120 exists
1100~1200 DEG C, remaining Control for Oxygen Content is less than 8%.Flue gas secondary combustion chamber 120 residence time 3.5 seconds with
On.With this understanding, it is ensured that enter incinerator dangerous waste thing fully thoroughly burn it is complete, and in flue gas bioxin and
The 99.99% of other oxious components is decomposed.
Slag-tapping system mainly includes air cooling slag hoist 121.Referring to Fig. 3-5, air cooling slag hoist 2 is provided with slag inlet 131, slags tap
Mouth 134 and air inlet 133.Wherein, slag inlet 131 is connected with the bottom of secondary combustion chamber 120.Rotary kiln 110 and secondary firing
The hot slag that room 120 produces enters air cooling slag hoist 121 through slag inlet 131, and the cold wind blasted from air inlet 133 is slagged tap air-cooled
High temperature oxygenating is carried out into secondary combustion chamber 120 after carrying out heat exchange with hot slag in machine 121, the slag after cooling is through slag notch
134 discharge.
Referring to Fig. 3-5, in one embodiment, air cooling slag hoist 121 includes shell body 130 and positioned at shell body 130
Interior comb type cooling bed 132.The top of shell body 130 is provided with slag inlet 131, and slag inlet 131 connects with the burner hearth of secondary combustion chamber 120
It is logical, for receiving slag.Comb type cooling bed 132 includes grate plate 140, and the front end of grate plate 140 is located at the lower section of slag inlet 131, the end of grate plate 140
It is adjacent with slag notch 134.Array air vent is evenly distributed with grate plate 140, the aperture of air vent is arranged to make cold wind under
Up pass through but slag will not down spill.Multiple row motion beam 150 is provided with grate plate 140, is spaced on each column motion beam 150 and set
It is equipped with multiple stick pushers 151.The length direction of stick pusher 151 is perpendicular to slag conveying direction A.
The lower section of each column motion beam 150 is provided with motion beam drive mechanism 160, is conveyed along slag for powered motion beam 150
Direction A is moved back and forth, for example, motion beam 150 can be driven using air cylinder driven mode.By moving beam 150
Reciprocating motion can effectively prevent the bonding of high-temperature fusion slag；Slag is promoted to slag notch 134 by stick pusher 151 simultaneously
It is slow to wriggle.Stick pusher 151 is inclined plane 152 and vertical plane 153 along slag conveying direction A points such that it is able to swimmingly guided
Slag is conveyed to slag notch 134.
The lower section of grate plate 140 is provided with air inlet pipeline, and air inlet pipeline is divided into air intake house steward 180 and winding pipe 181, shows in figure
In the embodiment for going out, air intake house steward 180 be arranged in parallel with the length direction of grate plate 140, uniformly draws upwards from air intake house steward 180
Go out multiple row winding pipe 181, the air inlet 133 of air inlet pipeline is connected with secondary blower 122.Secondary blower 122 is roused
The cold wind for entering uniformly is blowed to the array air vent of grate plate 140 through air inlet pipeline.
In preferred embodiment of the present utility model, the end of grate plate 140 is provided with ramp type and slags tap baffle plate 170, by going out
The height of slag baffle plate 170 adjusts the thickness of slag layer in grate plate 140, so that the thickness of slag layer in grate plate 140 is maintained necessarily
Thickness, the cooled slag of lower floor can play a protective role to grate plate 140.
Dangerous waste thing is different from conventional house refuse.Silico-calcium constituent content is big in conventional house refuse, the stove produced after burning
Slag exists in solid form；Solid-state slag is all easily achieved using water-cooled or air-cooled pattern.And silico-calcium contains in dangerous waste thing
Amount is low, and magnesium, aluminium, fluorine element content are high, therefore slag is in molten state after high temperature incineration；Because the slag of molten state is easy to cementing machine
Device, it is air-cooled to be considered as the forbidden zone being difficult to by the technical staff in dangerous waste thing burning disposal field always, can only be using conventional water
Chill formula.And the structure design and motion mode that the utility model passes through above-mentioned air cooling slag hoist 121, can effectively overcome high temperature
The bonding of molten slag, so that the air-cooled pattern of dangerous waste thing dregs of incinerator is achieved.
Another advantage of the present utility model is：The slag of the bottom of secondary combustion chamber 120 directly carries out hot friendship with Secondary Air
Change.This air-cooled pattern can be preheated Secondary Air, improve the efficiency of combustion of secondary combustion chamber 120；In addition, after air-cooled
Slag can directly pass through (closed) conveyer 123 and be delivered to slag storehouse 124 to be stored.The bottom of slag storehouse 124 is provided with out
Slag valve 126, valve 126 of slagging tap can be connected with automobile loading spout 127, can be in completely enclosed state by automobile loading spout 127
The lower freight house to automobile 128 conveys slag.Slag needs what is dried during this slag treatment mode overcomes existing water-cooled pattern
Problem, has fully saved the energy and water resource, and does not cause any pollution to environment.
Referring to Fig. 6, exhaust treatment system 500 mainly includes waste heat boiler 510, chilling tower 520, activated carbon dusting device
530th, sack cleaner 540, active carbon adsorption column 550, washing deentrainment tower 560, flue gas heater 570, tail exhaust blower 580 and
Chimney 590.
Flue gas is divided into four backhauls by the burner hearth of waste heat boiler 510 by three row's suspension type fin panel casings, and waste heat boiler is used
Radiation heat transfer mode, radiation heat transfer is that the water in pipeline is heated into steam, pipeline heat exchange by flue gas by way of radiation heat transfer
It is finned membrane wall passage to manage.Radiation heat transfer is difficult dust stratification due to being arrangement of cavities, and deashing is more convenient.This practicality
The heat exchange mode of new use full film type wall, while being equipped with deashing device, it is to avoid the phenomenon of coking occurs.
SNCR (selective non-catalytic method) can be set on the pipeline between waste heat boiler 510 and secondary combustion chamber 120
Denitrification apparatus 129, in high temperature environments, flue gas is sufficiently mixed with the atomization urea liquid for spraying into, and NOx components are O2's in flue gas
In the presence of with urea occur reduction reaction, at the same time urea liquid moisture all vaporized and taken away by flue gas.Control ammonia nitrogen ratio,
The reduction efficiency of NOx is 50%.
Expansion chamber is set in the bottom of waste heat boiler, flue gas will settle dust when flowing from bottom to top and enter sedimentation
Room, the flying dust that expansion chamber is collected is transported to flying dust storehouse 513 through double-deck push-pull valve 511 and conveyer 512.Boiler design exiting flue gas
Temperature is 550 DEG C, can avoid the temperature province of bioxin and furans regeneration.
Afterheat utilizing system is using the waste heat for generating steam in flue gas.Steam in addition to personal, after remaining depressurizes as needed
For production and application.Additionally, the steam that afterheat utilizing system is produced is by access industrial garden steam pipe system, for garden, enterprise uses.
High-temperature flue gas are down to 550 DEG C by temperature after waste heat boiler 510, and chilling tower 520, chilling are entered from top through flue
Pressure type shower nozzle 522 is set on tower 520, and shower nozzle 522 is connected with the alkali lye pond 521 equipped with NaOH.In the presence of high pressure,
The effect that moment is depressured when sodium hydroxide solution inside shower nozzle 522 spreads and spray through spiral, solution is atomized into 0.08mm
The drop of left and right, the drop after being atomized fully exchanges heat with high-temperature flue gas, and rapid evaporation, takes away heat in a short time so that
Flue-gas temperature is reduced to less than 200 DEG C in moment (0.8s), and moisture content (mass ratio) is less than 3%.While moisture evaporation,
There is neutralization reaction with acid gas in flue gas in NaOH.Due to flue gas, the residence time is less than 1s between 200-500 DEG C, because
This prevents synthesizing again for bioxin.
The system uses sodium hydroxide solution, and the deacidification effect of smoke processing system is more guaranteed.Chilling alkali lye
Injection flow rate is automatically adjusted according to flue gas exit temperature, and when the temperature is higher than design temperature, the chilling alkali lye amount that nozzle sprays increases
Plus, conversely, then reducing chilling alkali lye amount.Due to entering the material of incinerator 100 by a series of pre- place such as broken, quenched
Reason, so the composition of incineration flue gas middle acid substance will not occur acute variation, therefore the NaOH in chilling extracting tower 520
The addition of solution can maintain certain amount, it is ensured that clearance higher.
In order to meet incineration of waste standard limit of smog release, it is ensured that heavy metal (especially Hg) bioxin (PCDDs), furans
(PCDFs) discharge standard, in addition to strict control burning process and technical parameter, the utility model uses activated carbon dusting device
530 spray powdered carbon to the Venturi tube 533 being arranged in flue gas pipeline, and dioxin in flue gas and weight are adsorbed using active carbon powder
The noxious materials such as metal reach the purpose of flue gas high-efficient purification.Because activated carbon has great specific surface area, therefore, even if
It is a small amount of activated carbon, as long as being well mixed with flue gas and time of contact long enough, it is possible to reach adsorption cleaning efficiency high.It is living
Property charcoal and flue gas the inner strong turbulent flow of the uniform Venturi tube 533 for being combined by being arranged on flue realize, it is living
Property charcoal by uniformly spray into flue gas in, be well mixed, reached good adsorption effect.Activated carbon is strong with flue gas in the duct
After uniform mixing, efficient absorption effect is reached, but absorption in pipeline and not up to saturation, after then entering together with flue gas again
In continuous sack cleaner 540, rest on filter bag, be fully contacted with the flue gas for slow transitting through filter bag, reach to weight in flue gas
The adsorption cleaning of the pollutants such as metal Hg and PCDD/Fs, the activated carbon of Adsorption of Heavy Metals, bioxin falls into sack cleaner 540
Ash bucket.
Activated carbon is then sent directly into flue through self-measuring device, is removed into follow-up cloth bag after being sufficiently mixed with flue gas
Dirt device 540.Using the activated carbon of 200 mesh in the utility model, to ensure specific surface area and adsorption capacity, activated carbon is added to company
Continuous operation, activated carbon addition is controlled by frequency conversion batcher.Activated carbon quantity delivered is with the load adjustment of incinerator 100 and according to fixed
The heavy metal of phase is He bioxin Monitoring Data gives adjustment signal.
When flue gas is by outer filter bag by sack cleaner 540, the dust in flue gas is trapped within filter bag outer surface, so that
It is purified, then Venturi tube enters upper box in removing dust device, is discharged from outlet.Dust of the attached collection in filter bag outer surface constantly increases
Plus, increase dust remover resistance, to make equipment resistance maintain in the range of restriction, it is necessary to periodically eliminate and be attached to filter bag surface
Dust：Each control valve is periodically triggered in order by PLC controls to open, gas bag compressed air is sprayed by injection tube eyelet, lead to
Venturi tube is crossed, inducing peripheral air enters filter bag, filter bag is drastically expanded in a flash, and along with the acting in opposition of air-flow,
Shake off dust.The dust shaken off falls into ash bucket, is discharged through spiral ash hoist 541.Cloth bag uses high temperature resistant type PTFE overlay films, has
Prevent dew condensation phenomenon from producing to effect, while the service life of filter cloth can be extended.
To ensure that Wei gas Zhong dioxins materials meet following new standard 0.1TEQng/m3Requirement, the utility model exists
Activated-charcoal column 550 is also set up on the flue gas flow path of sack cleaner 540, micro bioxin material can be further removed.
Washing deentrainment tower 560 is the further removal to pollutant in flue gas, by neutralization reaction, the effect scrubbed, will
Sour gas, dust are strict controlled in design limitation, it is ensured that smoke processing system reaches the requirement of highest standard.
Flue gas enters washing deentrainment tower 560, to sour gas wet-treating, can improve treatment effect, and reduce treatment
Cost；In order to ensure the clean result of scrubbing tower alkali lye, the pH value to alkali lye realizes automatic detection and control.Control system according to
The change of pH value automatically adjusts chemical feeding quantity, makes clean result optimal, and clean result is influenceed to overcome human factor.
The washing built-in filler of deentrainment tower 560, the wash tower bottoms that flue gas enters above circulating water chennel in divergent shape, so
Continue vertical up by dry load layer afterwards, the absorption of sour gas just occurs at this position.By the shower nozzle with nozzle
Circulation fluid is expanded and spreads to whole tower section, it is ensured that all gas can be fully contacted with circulation fluid.
The washing outlet of deentrainment tower 560 sets demister, and all drops can be removed from flue gas stream by demister.Demister band
There is Flushing nozzle, can off and on spray into high pressure, clean water cleaning demister, the water that will be isolated enters wash tower bottoms.It is to be recycled
After saturation, high slat-containing wastewater enters advanced treatment system desalination.It is about 70 DEG C from washing deentrainment tower 560 flue-gas temperature out,
Need by flue gas heater 570, after temperature is brought up into 120 DEG C, enter back into tail exhaust blower 580.Flue gas heater 570 can be with
It is thermal source to use the steam of waste heat boiler 510 or the flue gas of high temperature section.
Sample tap and on-line checking mouthful are stayed in chimney 590, with a set of flue gas on-line measuring device, cigarette is discharged for detecting
Flue dust, humidity in gas, flue-gas temperature, pressure, flow, HF, SO2、CO、NOx、HCl、O2、CO2Deng.Monitoring Data feeds back to burns
Workshop DCS system is burnt, by host computer, is shown and is recorded, used for environment care provider analysis in factory.SO2And HCl numbers
According to also transmitting to deacidification system, with the operational factor of the content Numerical Control deacidification system of discharge gas middle acid substance, so that
Ensure that fume emission is qualified.Smoke on-line monitoring system is furnished with data remote unit, using local networks and Environmental Protection Agency's environmental protection letter
Breath Platform communication, can report relevant environment monitoring department by Monitoring Data.
The flying dust that waste heat boiler 510, chilling tower 520, deduster 540 are collected in exhaust treatment system 500, all through conveyer
512 enter flying dust storehouse 513, and flying dust storehouse 513 can be connected with automobile loading spout 516, can be complete by automobile loading spout 516
Slag is conveyed to the freight house of automobile 517 under closed state, transporting to landfill yard by automobile 517 carries out solidification landfill.Flying dust Cang518Ding
Portion can be set deduster 518 and air-introduced machine 519, and the wind of extraction may be coupled to the kiln hood of rotary kiln 110, make as First air
With.This flying dust processing mode does not cause any pollution to environment.
Gas cleaning rate higher can reach in the case where waste heat is made full use of by above-mentioned exhaust treatment system 500,
Can be to dust, sour gas, NOXThe pollutants such as, bioxin, heavy metal are purified, and reach statutory emissions regulations.
Claims (6)
1. a kind of danger waste incineration system, including feed system, incinerator and exhaust treatment system, it is characterised in that wherein
Feed system includes bulk material feed system, sacked material feed system and liquid object feed system, respectively with continuous, closed side
Formula is to incinerator conveying bulk material, sacked material and liquid dangerous waste thing；
Wherein bulk material feed system includes：
Feeding bin, with closing housing, housing is provided with material inlet and material outlet, and housing bottom is provided with spiral reamer；
First weigher, for being weighed to feeding bin；
Second weigher, is arranged on feeding bin lower section, for being weighed to discharging；And
Rotary feeder, import is connected with the second weigher, and outlet is connected with incinerator；
Wherein sacked material feed system includes suspended chain, hopper and double-deck push-pull valve, and be delivered to down for sacked material by suspended chain
Hopper, then incinerator is delivered to by double-deck push-pull valve；
Wherein liquid object feed system includes multichannel nozzle, is respectively intended to conveying high heating value, middle calorific value and low heat value liquid.
2. danger waste incineration system according to claim 1, it is characterised in that incinerator includes rotary kiln and two grades of combustions
Room is burnt, the kiln tail of rotary kiln is connected with the lower seal of secondary combustion chamber.
3. danger waste incineration system according to claim 2, it is characterised in that set respectively in rotary kiln and secondary combustion chamber
It is equipped with temperature monitor and oxygen content monitor.
4. danger waste incineration system according to claim 2, it is characterised in that wherein secondary combustion chamber bottom is provided with wind
Into secondary combustion chamber's burning after cold mucking machine, Secondary Air and slag heat exchange, it is air-cooled after slag be fed directly to slag storehouse.
5. danger waste incineration system according to claim 2, it is characterised in that wherein exhaust treatment system includes waste heat pot
Stove, chilling tower, activated carbon dusting device, sack cleaner, active carbon adsorption column, washing deentrainment tower, flue gas heater, tail air draft
Machine and chimney.
6. danger waste incineration system according to claim 5, it is characterised in that wherein in secondary combustion chamber and waste heat boiler
Between be additionally provided with SNCR denitration device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620824882.8U CN206310509U (en) | 2016-08-01 | 2016-08-01 | Danger waste incineration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620824882.8U CN206310509U (en) | 2016-08-01 | 2016-08-01 | Danger waste incineration system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108996119A (en) * | 2018-08-10 | 2018-12-14 | 甘肃锦世化工有限责任公司 | A kind of rotary kiln automatic feeding device and its application method |
| CN110594747A (en) * | 2019-10-16 | 2019-12-20 | 天津海关动植物与食品检测中心 | Cross-border biological product comprehensive quarantine treatment equipment and use method thereof |
-
2016
- 2016-08-01 CN CN201620824882.8U patent/CN206310509U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108996119A (en) * | 2018-08-10 | 2018-12-14 | 甘肃锦世化工有限责任公司 | A kind of rotary kiln automatic feeding device and its application method |
| CN110594747A (en) * | 2019-10-16 | 2019-12-20 | 天津海关动植物与食品检测中心 | Cross-border biological product comprehensive quarantine treatment equipment and use method thereof |
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Effective date of registration: 20180815 Address after: 100124 floor 15, Jin Changan block C, 82 East Fourth Ring Road, Chaoyang District, Beijing. Patentee after: Beijing Beikong Environmental Protection Engineering Co. Ltd. Address before: 100124 floor 15, Jin Changan block C, 82 East Fourth Ring Road, Chaoyang District, Beijing. Co-patentee before: Beikong Annai Environmental Technology Development Co., Ltd. Changzhou Patentee before: Beijing Beikong Environmental Protection Engineering Co. Ltd. |
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Effective date of registration: 20200415 Address after: 213127, Changzhou, Jiangsu Province town of new North Wei Village Riverside Industrial Park Patentee after: BEIKONG ANNAIDE ENVIRONMENT TECHNOLOGY DEVELOPMENT CHANGZHOU Co.,Ltd. Address before: 100124 C building, No. 15, Jin Changan building, 82 Middle East Fourth Ring Road, Beijing, Chaoyang District Patentee before: BEIJING ENTERPRISES HOLDINGS ENVIRONMENT TECHNOLOGY Co.,Ltd. |