CN105107820B - A kind of garbage flying ash cement kiln synergic processing system - Google Patents
A kind of garbage flying ash cement kiln synergic processing system Download PDFInfo
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- CN105107820B CN105107820B CN201510524264.1A CN201510524264A CN105107820B CN 105107820 B CN105107820 B CN 105107820B CN 201510524264 A CN201510524264 A CN 201510524264A CN 105107820 B CN105107820 B CN 105107820B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The present invention relates to a kind of garbage flying ash cement kiln synergic processing system, the washing water of incineration of refuse flyash tertiary effluent elution salt system output goes removing heavy metals system by pipeline into coagulating sedimentation；Coagulating sedimentation goes the saliferous rate that removing heavy metals system is obtained to enter sodium filter and counter-infiltration preconcentration technique for 1 2% solution；The sodium filter and counter-infiltration preconcentration technique remove the calcium ions and magnesium ions in washing water, by saliferous rate for 1 2% solution be concentrated into 6% 8% dope, 6% 8% dope is conveyed into denier carnallite system and removes carnallite, and last nearly saturated solution is evaporated crystallization into MVR evaporation and crystallization systems.The present invention is a kind of device that cement kiln synergic processing is carried out to incineration of refuse flyash, can largely dispose flying dust, and manufacture of cement amount is big, realizes harmless treatment, and evaporative crystallization obtains Nacl for paper technology, Snow Agent and chlor-alkali industry.
Description
Technical field：
Field, more particularly to a kind of garbage flying ash cement kiln synergic processing are disposed the present invention relates to garbage flying ash
System.
Background technology：
With the development of the social economy, Process of Urbanization is aggravated, many big and medium-sized cities of China meet with the tired of " garbage-surrounded city "
Disturb.Garbage disposal has 3 kinds of modes：Landfill, burn and compost, the garbage disposal of current China use based on landfill, compost with
Measure supplemented by burning, this will take substantial amounts of land resource.With the continuous improvement that the rising of land price, urban environment are required,
Garbage loading embeading becomes no longer economic and safety, and increasing city starts to consider incineration treatment of garbage.Burning disposal can make
The volume of municipal refuse reduces 80-90%, and its waste residue produced can make recycling.
Flying dust is the residue of waste incineration, the carcinogenic substance " bioxin that waste incineration is produced " 90% all in flying dust.Not
The flying dust of cured processing is dealt with improperly, wherein substantial amounts of heavy metal is Ji bioxin can cause serious contamination accident, harm is occupied
People's health.Before, the whole nation only has several cities and is carrying out incineration of refuse flyash processing.One side flying dust processing cost is very high.
On the other hand due to irregular marketing, not in place, the problem of there is harmful competition is supervised, " flying dust " is in " disorderly flying " state.
Flying dust can not obtain safe disposal, will be environmentally hazardous very big hidden danger.
Because flying dust contains substantial amounts of chlorion, chlorion production normal to cement kiln produces very big influence, mainly
Cement kiln skinning is shown, serious meeting produces quality accident, so, the key of cement kiln disposal flying dust is removed in flying dust
A large amount of chlorions, water wash system is the main method for removing chlorion in flying dust.
The content of the invention：
The purpose of the present invention is that there is provided a kind of garbage flying ash cement kiln synergic processing system in view of the deficiencies of the prior art
System, realizes the innoxious and recycling treatment of flying dust, flying ash can meet the raw materials used standard of manufacture of cement, can largely locate
Flying dust is put, manufacture of cement amount is big.
The technology solution of the present invention is as follows：
A kind of garbage flying ash cement kiln synergic processing system, it includes the incineration of refuse flyash three-level water elution being sequentially connected
Salt system, coagulating sedimentation remove removing heavy metals system, sodium filter and counter-infiltration preconcentration technique, go denier carnallite system and MVR to steam
Send out crystal system；The washing water of the incineration of refuse flyash tertiary effluent elution salt system output is gone by pipeline into coagulating sedimentation
Removing heavy metals system；Coagulating sedimentation goes the saliferous rate that removing heavy metals system is obtained to enter sodium filter and counter-infiltration for 1-2% solution
Preconcentration technique；The sodium filter and counter-infiltration preconcentration technique remove the calcium ions and magnesium ions in washing water, are 1-2%'s by saliferous rate
Solution is concentrated into 6%-8% dope, and 6%-8% dope is conveyed into denier carnallite system and removes carnallite, last near
Saturated solution is evaporated crystallization into MVR evaporation and crystallization systems.
Preferably, the incineration of refuse flyash tertiary effluent elutes salt system, it includes flying dust storage, the flying dust storage
Lower end be communicated with conveying worm a, the conveying worm a outlet be connected to the first order washing desalter, the first order
Washing desalter includes agitator tank a；Water inlet pipe a and chemical feed pipe a have been respectively communicated with the agitator tank a；In the agitator tank a
Flying dust, water with medicinal liquid agitating into mud, the mud that agitator tank a lower end is connected in slush pump a, agitator tank a passes through mud
The mud that pump a is conveyed into buffer tank a, buffer tank a is conveyed into horizontal centrifuge a by slush pump b and is dehydrated；It is described horizontal
Centrifuge a isolates mud the flying dust of chloro ion-containing solution and aqueous Ji bioxin, and chloro ion-containing solution enters coagulating sedimentation
Removing heavy metals system is gone, aqueous and bioxin flying dust enters the second level and washes desalter；The second level washing desalination dress
The flying dust that mud is isolated to chloro ion-containing solution and secondary aqueous Ji bioxin is put, chloro ion-containing solution is gone into coagulating sedimentation
Removing heavy metals system, secondary aqueous and bioxin flying dust enters the third level and washes desalter；The third level washes desalter
Chloro ion-containing solution and three aqueous and bioxin flying dusts are isolated, chloro ion-containing solution removes removing heavy metals into coagulating sedimentation
System, the flying dust of three aqueous Ji bioxin enters cement kiln, and flying dust becomes cement raw material after cement kiln is burned.
Preferably, the charging aperture of the horizontal centrifuge a is connected to slush pump b discharging opening；The horizontal centrifuge a
Slag notch be connected to conveying worm b, horizontal centrifuge a liquid outlet is connected to coagulating sedimentation by drain pipe road a and removed
Heavy metal system；The conveying worm b is provided with two discharging openings；The second level washing desalter includes agitator tank b, often
The slurries that individual conveying worm b discharging opening is connected in agitator tank a b, each agitator tank b send into buffer tank through slush pump c
Slurry in b, buffer tank b is dehydrated through slush pump d feedings horizontal centrifuge b；The slag notch connection of the horizontal centrifuge b
Conveying worm c, horizontal centrifuge b liquid outlet is connected to coagulative precipitation tank by drain pipe road b；The conveying worm
C is provided with two discharging openings；Third level washing desalter includes agitator tank c, and each conveying worm c discharging opening is connected to one
Slurries in individual agitator tank c, each agitator tank c are sent through the slush pump e slurries sent into buffer tank c, buffer tank c through slush pump f
Enter horizontal centrifuge c to be dehydrated, the charging aperture of the horizontal centrifuge c is connected to slush pump f discharging opening；It is described it is horizontal from
Scheming c slag notch is connected to cement kiln.
Preferably, be connected on each agitator tank b on water inlet pipe b, each agitator tank c be connected into
Water pipe c, the water inlet pipe a, water inlet pipe b and water inlet pipe c are connected with inlet water tank respectively；Connect respectively on each agitator tank b
It is connected on chemical feed pipe b, each agitator tank c and is connected to chemical feed pipe c, the chemical feed pipe a, chemical feed pipe b and chemical feed pipe c connects respectively
It is connected on chemicals dosing plant；The liquid outlet parallel connection of the chemicals dosing plant has three groups of automatic control flow devices, and three groups control automatically
Flow apparatus processed controls the flow in chemical feed pipe a, chemical feed pipe b and chemical feed pipe c respectively, and can send alarm when dose is not enough carries
Show.
Preferably, the coagulating sedimentation goes removing heavy metals system to include coagulative precipitation tank, a left side for the coagulative precipitation tank
End is connected to be communicated with liquid-feeding tube and chemical feed pipe d on two agitator tank d, and each agitator tank d by delivery pump a；The dosing
It is connected with pipe d by dosing pump on chemicals dosing plant, and chemicals dosing plant and is connected with water pipe；The coagulative precipitation tank bottom is connected with
Centrifugal dehydrator, coagulative precipitation tank top is connected with buffer pool, and buffer pool is connected to delivery pump b, and delivery pump b is connected to complex pocket
Formula filter, and composite bag type filter lower end is connected to centrifugal dehydrator；The heavy metal precipitation thing fortune of coagulative precipitation tank bottom
Feeding centrifugal dehydrator is dehydrated, and the liquid that the clear liquid on coagulative precipitation tank top is conveyed into buffer pool, buffer pool passes through defeated
Pump b is sent to be conveyed into composite bag type filter, the heavy metal not precipitated completely and contaminant filter are fallen, obtained by composite bag type filter
Heavy metal and impurity transport into centrifugal dehydrator and be dehydrated, obtained saliferous rate for 1-2% solution enter next system
Handled.
Preferably, being provided with the dosing valve of control dosing flow on the chemical feed pipe d；It is provided with and adds on the liquid-feeding tube
Water valve.
Preferably, the sodium filter and counter-infiltration preconcentration technique, which include sodium, filters component, the sodium is filtered to be communicated with component
Water pipe a is connected with chemicals dosing plant a, and chemicals dosing plant a；The water inlet end of the sodium filter component is connected to filter a, sodium filter component
The condensed water of output is connected to intermediate water tank by pipeline, and the fresh water of sodium filter component output is connected to reverse osmosis water by pipeline
Case；The bottom of the intermediate water tank is connected to feeding engine a, and feeding engine a water side is connected to filter b, filter b outlet
End is connected to counter-infiltration pre-concentration device；It is communicated with the counter-infiltration pre-concentration device on chemicals dosing plant b, and chemicals dosing plant b
It is connected with water pipe b；The condensed water recoverable of the counter-infiltration pre-concentration device output, counter-infiltration pre-concentration device output
Fresh water is connected in counter-infiltration water tank by water pipe.
Preferably, described go denier carnallite system to include concentration liquid case, the upper end of the concentration liquid case be communicated with into
Liquid pipe, the lower end of the concentration liquid case, which is communicated with drain pipe, the drain pipe, is connected with separation feeding engine, separation feeding engine
Separation ball valve is connected on discharge nozzle point two-way, every road discharge nozzle, for separation ball valve a and separation ball valve b, separation ball valve a
One-level carnallite release unit is connected to, separation ball valve b is connected to two grades of carnallite release units；The one-level carnallite release unit
Lower end is connected to carnallite collecting pit, and the upper end of one-level carnallite release unit is connected to separate ball valve c, and separation ball valve c passes through pipeline a
It is connected to be connected with concentration material returning valve in concentration liquid case, and pipeline a；The upper end of two grades of carnallite release units is connected to separation
Ball valve d, separation ball valve d are connected on pipeline a and pipeline b, pipeline b be connected with crystallization and evaporation valve, the connection of crystallization and evaporation valve simultaneously
MVR evaporation and crystallization systems.
Preferably, the MVR evaporation and crystallization systems include feeding engine d, feeding engine d is connected to evaporating chamber, the evaporation
It is communicated with storehouse on heat exchanger, heat exchanger and is connected with vapor recompression pump；The bottom of the evaporating chamber is connected with by discharging pump d
Suction filtration tank, the top of evaporating chamber is connected to Roots's vapor recompression machine by pipeline；Installed in Roots's vapor recompression machine
There is vavuum pump；The vavuum pump is connected to filtrate tank, and filtrate tank is connected with suction filtration tank, and vavuum pump is connected with vapor recompression pump
Together, the mother liquor under vacuum pumping action in filtrate tank is in negative pressure state, and the mother in filtrate tank is stored under suction function
Liquid returns evaporating chamber and continues evaporative crystallization.
The beneficial effects of the present invention are：
The chloro ion-containing solution that the tertiary effluent elution salt system of the present invention is produced enters coagulative precipitation tank, aqueous 40%-
50% and flying dust of the ion containing CL less than 1% enter sludge collecting pit and carry out a huge sum of money in microbial attack bioxin and flying dust
Category, the raw material of construction material can be directly used as by the flying dust of microbial attack bioxin.This microorganism is reusable, i.e., complete
Into flying dust water 1：8 three-level water wash systems.Three-level chemicals dosing plant is same set of chemicals dosing plant, and automatic control flow enters respectively
Row is delivered, and alarm can be sent when dose is not enough.The leaching technology of microorganism applies the direct effect of specific microorganism
Or the indirectly-acting of its metabolin is complexed acidolysis etc. by the huge sum of money in solid phase material under normal temperature and pressure conditionses by redox
Category ion-solubility discharges into the process of liquid phase.
The beam glue reinforcing of the present invention is gone in removing heavy metals system, because incineration of refuse flyash contains many kinds of metal ions, is mixed
The mass ratio that solution is added during solidifying sedimentation basin stirring is the anion active agent of one thousandth to 5/1000ths, promotes a variety of scattered
Form macromolecular to precipitate after Van der Waals force polymerization between metal ion, the overwhelming majority is treated after static half an hour to one hour
After heavy metal ion precipitation, supernatant is taken to enter composite bag type filter by the heavy metal not precipitated completely, contaminant filter falls.It is mixed
Solidifying sedimentation basin precipitation is burned after entering the pre- desiccation of sludge collecting pit progress into cement kiln, so as to solve an incineration of refuse flyash huge sum of money
The pollution of category.Precipitation is filtered out again after anion active agent is added in this system, therefore does not cause the secondary pollution of solution, to follow-up
Membranous system, evaporative crystallization etc., which is not impacted, obtains harmlessness disposing.
In the nanofiltration system of the present invention, in the washing water after being washed because of flying dust, contain substantial amounts of calcium ions and magnesium ions so that concentration
The blocking of follow-up membranous system can be caused afterwards.The separating mechanism of NF membrane is screening and dissolving diffusion and deposits, while having electric charge again
Repelling effect, can effectively remove divalence and multivalent ion, remove all kinds of materials that molecular weight is more than 200, can partly remove
Monovalention and molecular weight are less than 200 material；The separating property of NF membrane is substantially better than ultrafiltration and microfiltration, with nanofiltration first by water
Remaining calcium and magnesium in wash water is removed, and the water of the dilute side of output enters intermediate water tank, can be entered in counter-infiltration preconcentration technique.
It is that one kind isolates solvent from solution using pressure differential as motive force in the counter-infiltration preconcentration technique of the present invention
UF membrane operation because it and naturally osmotic is in opposite direction, therefore claim counter-infiltration.According to the different osmotic of various materials,
The purpose of separation, extraction, purifying and concentration can be reached to use the reverse osmosis pressure more than osmotic pressure, i.e. hyperfiltration.Through
The water for removing hardness is crossed, counter-infiltration can be directly entered, by counter-infiltration pre-concentration, 6%-8% can be concentrated into washing water.Output
Condensed water recoverable, the fresh water of output can enter water wash system water scouring water.
The present invention's goes denier carnallite system to have removed denier carnallite and carry out the recycling of the energy, due to rubbish
The uncertainty of each supplied materials of flying ash, prevents the blocking of crystallizing evaporator, therefore denier is additionally arranged before evaporative crystallization
Carnallite system.The dope for concentrating water tank enters progress high temperature (temperature after flat ultra micro water filtration film one-level carnallite release unit
Be upgraded to 80-110 DEG C) processing removes the carnallite of high temperature section, after it is further using absorption principle by two grades of carnallite release units
Carnallite is removed, the carnallite filtered out send dangerous waste factory and office to manage, processing cost is very low.
Nearly saturation state water is also smaller because dope has been concentrated into for the MVR evaporation and crystallization systems of the present invention, so from strong
Circulation evaporation crystallizer processed, dope enters evaporating chamber, and heat exchanger is passed through live steam and dope is heated, and is produced in dope evaporation process
The two sections of steam gone out can enter Roots's vapor recompression machine and steam temperature rise is gone successively into heat exchanger to dope heating evaporation, without
Original vol saturated vapor is persistently supplemented, dope, which is evaporated, reaches that hypersaturated state separates out crystal, then is discharged into from evaporating chamber
Suction filtration tank carries out separation of solid and liquid, and mother liquor returns to evaporating chamber and continues evaporative crystallization.Because having removed a large amount of carnallites, what evaporative crystallization came out
Salt contains sodium chloride and reaches that more than 76% can be used for papermaking, snow melting agent etc., handles this system using Roots's steam recompression technology,
Greatly save operation energy consumption.
Brief description of the drawings：
The present invention is described further below in conjunction with the accompanying drawings：
Fig. 1 is system flow chart of the invention；
Fig. 2 elutes the flow chart of salt system for the incineration of refuse flyash tertiary effluent of the present invention；
Fig. 3 removes the flow chart of removing heavy metals system for the beam glue reinforcing of the present invention；
Fig. 4 is the nanofiltration system of the present invention and the flow chart of counter-infiltration preconcentration technique；
Fig. 5 is the flow chart for going denier carnallite system of the invention；
Fig. 6 is the flow chart of the MVR evaporation and crystallization systems of the present invention.
Embodiment：
Embodiment, is shown in accompanying drawing 1~6, a kind of garbage flying ash cement kiln synergic processing system, and it includes the rubbish being sequentially connected
Flying ash tertiary effluent salt elution system I, coagulating sedimentation remove removing heavy metals system II, sodium filter III and counter-infiltration preconcentration technique
IVth, denier carnallite system V, MVR evaporation and crystallization systems VI are gone；The incineration of refuse flyash tertiary effluent elutes salt system output
Washing water removing heavy metals system is gone into coagulating sedimentation by pipeline；Coagulating sedimentation goes the saliferous rate that removing heavy metals system is obtained
Enter sodium filter and counter-infiltration preconcentration technique for 1-2% solution；The sodium filter and counter-infiltration preconcentration technique remove washing water
In calcium ions and magnesium ions, saliferous rate is concentrated into 6%-8% dope for 1-2% solution, 6%-8% dope is conveyed into pole
Micro carnallite system removes carnallite, and last nearly saturated solution is evaporated crystallization into MVR evaporation and crystallization systems.
It includes flying dust storage 1 to the incineration of refuse flyash tertiary effluent elution salt system, and the lower end of the flying dust storage connects
The outlet for being connected with conveying worm a2, the conveying worm a is connected to first order washing desalter, first order washing desalination
Device includes agitator tank a3；A certain amount of water is added, and the weight ratio of flying dust and water is 1：3, flying dust 1000kg, water 3000kg, institute
State and water inlet pipe a4 and chemical feed pipe a5 have been respectively communicated with agitator tank a；Agitator tank a volume is 1.35m3, agitator tank a power is
Add quality in 2.2kw, and whipping process to be stirred 20 minutes for 1% chaotropic agent of flying dust, flying in the agitator tank a
Ash, water and medicinal liquid agitating are connected to slush pump a6 into mud, agitator tank a lower end, and slush pump a power is 5.5kw, conveying speed
Rate is 0~50m3Mud in/h, agitator tank a is conveyed into buffer tank a7 by slush pump a, and buffer tank a power is 0.75kw,
Buffer tank a volume is 1.35m3；Mud in buffer tank a is conveyed into horizontal centrifuge a9 by slush pump b8 and is dehydrated；
The horizontal centrifuge a isolates mud the flying dust of chloro ion-containing solution and aqueous Ji bioxin, and aqueous Ji bioxin flies
The moisture content of ash is 40%-50%, and chloro ion-containing solution goes removing heavy metals system into coagulating sedimentation, and moisture content is 40%-
50% aqueous and bioxin flying dust enters the second level and washes desalter；The second level washing desalter divides mud
Chloro ion-containing solution and secondary aqueous and bioxin flying dust are separated out, chloro ion-containing solution goes to removing heavy metals system into coagulating sedimentation
System, secondary aqueous and bioxin flying dust enters the third level and washes desalter；Third level washing desalter is isolated chloride
Solion and three aqueous and bioxin flying dusts, chloro ion-containing solution go removing heavy metals system, three times into coagulating sedimentation
The flying dust of aqueous Ji bioxin enters cement kiln, and flying dust becomes cement raw material after cement kiln is burned.
The charging aperture of the horizontal centrifuge a is connected to slush pump b discharging opening；The slag notch of the horizontal centrifuge a
Conveying worm b10 is connected to, horizontal centrifuge a liquid outlet is connected to coagulating sedimentation by drain pipe road a11 and removes a huge sum of money
Washing water in agitator tank d in category system, agitator tank d is handled into coagulative precipitation tank 12；The conveying worm b is set
There are two discharging openings；The second level washing desalter includes agitator tank b13, and aqueous and bioxin flying dust is through helical feed
Machine b is conveyed into agitator tank b, and using the weight ratio of initial flying dust and water as 1：3 addition water, which are stirred in washing, whipping process, to be added
Enter 1% chaotropic agent that quality is initial flying dust to be stirred 30 minutes；Secondary mud is obtained after stirring fully；Each spiral transferring
Machine b discharging opening is sent to be connected to agitator tank a b, each agitator tank b power for 2.2KW, volume is 0.8m3, stirring is fully
After obtain slurries in secondary mud, each agitator tank b and send into buffer tank b15 through slush pump c14, slush pump c power is
5.5kw, transfer rate is 0~50m3/ h, buffer tank b power are 0.75kw, and buffer tank a volume is 1.35m3, buffer tank b
Interior slurry is dehydrated through slush pump d16 feedings horizontal centrifuge b17；Slush pump d power is 1.5kw, and transfer rate is 0
~1.2m3/h。
The slag notch of the horizontal centrifuge b is connected to conveying worm c18, and horizontal centrifuge b liquid outlet is by going out
Liquid pipe road b is connected to coagulating sedimentation and goes removing heavy metals system；The conveying worm c is provided with two discharging openings；The third level is washed
The discharging opening that desalter includes agitator tank c19, each conveying worm c is connected in agitator tank a c, each agitator tank c
Slurries send into buffer tank c21 through slush pump e20, the slurry in buffer tank c is taken off through slush pump f feedings horizontal centrifuge c
Water, the charging aperture of the horizontal centrifuge c is connected to slush pump f22 discharging opening；The slag notch connection of the horizontal centrifuge c
Cement kiln, mud is isolated into chloro ion-containing solution and secondary aqueous and bioxin flying dust, it is secondary aqueous and bioxin
The moisture content of flying dust is 40%-50%, and chloro ion-containing solution enters coagulative precipitation tank, and the flying dust of secondary aqueous Ji bioxin enters
Agitator tank c.The fly ash carry of secondary aqueous Ji bioxin is to agitator tank c, and using the weight ratio of initial flying dust and water as 1：2 add
Water is stirred addition quality in washing, whipping process and is stirred 20 minutes for 1% chaotropic agent of initial flying dust；Stirring is filled
Three mud, tri- mud are obtained after point to be dehydrated into horizontal centrifuge c23, horizontal centrifuge c charging aperture is connected to
Slush pump f discharging opening；The slag notch of the horizontal centrifuge c is connected to cement kiln 24.Mud is isolated into chloride ion-containing molten
The flying dust of liquid and three aqueous Ji bioxin, the moisture content of the flying dust of three aqueous Ji bioxin is 40%-50%, chloride ion-containing
Solution enters coagulative precipitation tank, and the flying dust of flying dust and chloride ion-containing less than 1% of three aqueous Ji bioxin is received into sludge
Ji Chi carries out the heavy metal in microbial attack bioxin and ash, can be directly used as building by the flying dust of microbial attack bioxin
The raw material of material is built, this microorganism is reusable, that is, complete flying dust and water 1：8 three-level water wash system.
It is connected on each agitator tank b on water inlet pipe b, each agitator tank c and is connected to water inlet pipe c, institute
Water inlet pipe a, water inlet pipe b and water inlet pipe c is stated respectively with inlet water tank 25 to be connected；It is connected to and adds on each agitator tank b
Chemical feed pipe c is connected on pencil b, each agitator tank c, the chemical feed pipe a, chemical feed pipe b and chemical feed pipe c, which are connected to, to be added
On medicine device 26；The liquid outlet parallel connection of the chemicals dosing plant has three groups of automatic control flow devices 27, and three groups automatically control
Flow apparatus controls the flow in chemical feed pipe a, chemical feed pipe b and chemical feed pipe c respectively, and alarm can be sent when dose is not enough.
The coagulating sedimentation goes removing heavy metals system to include coagulative precipitation tank 12, and the left end of the coagulative precipitation tank passes through defeated
Pump a28 is sent to be connected to be communicated with liquid-feeding tube 30 and chemical feed pipe d31 on two agitator tank d29, and each agitator tank d；At liquid-feeding tube
Anion active agent stirring, and the quality of anion active agent are added at chloro ion-containing solution after into three-level washing, chemical feed pipe d
1 ‰~the 5 ‰ of chloro ion-containing solution quality are accounted for, make to be formed macromolecular after a variety of dispersed metal ionic polymerizations so as to precipitate, it is static
After 0.5~1 hour, precipitate 85~95% heavy metal ion；It is provided with priming valve 32, chemical feed pipe d and installs on liquid-feeding tube
There is the dosing valve 33 of control dosing flow.Chemicals dosing plant 35, the work(of dosing pump are connected with by dosing pump 34 on the chemical feed pipe d
Rate is that nearly running water at water pipe 36, water pipe is connected with 0.37KW, and chemicals dosing plant, is easy to be well mixed with decoction；It is described mixed
Solidifying sedimentation basin bottom is connected with centrifugal dehydrator 37, and coagulative precipitation tank top is connected with buffer pool 38, and buffer pool is connected to conveying
Pump b39, delivery pump b are connected to composite bag type filter 40, and composite bag type filter has on two, each composite bag type filter
Portion is provided with inlet, and bottom is provided with liquid outlet, and lower end is provided with sewage draining exit, and composite bag type filter is by the heavy metal not precipitated completely
Fall with contaminant filter, obtained heavy metal and impurity transports into centrifugal dehydrator by sewage draining exit and be dehydrated, obtained saliferous
Rate enters next processing system for 1-2% solution by liquid outlet；The clear liquid on coagulative precipitation tank top is conveyed into buffer pool, delays
The liquid rushed in pond is conveyed into composite bag type filter by delivery pump b, and composite bag type filter is by the huge sum of money not precipitated completely
Category and contaminant filter fall.
The sodium filter and counter-infiltration preconcentration technique include sodium and filter component 41, and the sodium is filtered and is communicated with chemicals dosing plant on component
Water pipe a is connected with a, and chemicals dosing plant a；Chemicals dosing plant a enters antisludging agent, and the water inlet end of the sodium filter component is connected to filtering
Device a, the condensed water of sodium filter component output is connected to intermediate water tank 42 by pipeline, and the fresh water of sodium filter component output is connected by pipeline
Then counter-infiltration water tank；The bottom of the intermediate water tank is connected to feeding engine a, and feeding engine a water side is connected to filter b,
The filter b port of export is connected to counter-infiltration pre-concentration device 43；Chemicals dosing plant is communicated with the counter-infiltration pre-concentration device
Water pipe b is connected with b, and chemicals dosing plant b；The condensed water recoverable of the counter-infiltration pre-concentration device output, counter-infiltration
The fresh water of pre-concentration device output is connected in counter-infiltration water tank by water pipe.The water of intermediate water tank is pumped into reverse osmosis with feeding again
Permeable membrane component 43 carries out counter-infiltration pre-concentration, while entering antisludging agent, reverse osmosis membrane by chemicals dosing plant c in reverse osmosis membrane assembly
Water can be concentrated into 6%~8% by component, and reverse osmosis membrane assembly output fresh water enters in reverse osmosis produced water tank, reverse osmosis produced water tank
Water can enter incineration of refuse flyash washing moisturizing use
Described to go denier carnallite system to include concentration liquid case 44, the upper end of the concentration liquid case is communicated with feed tube, institute
State concentration liquid case lower end be communicated with drain pipe, the drain pipe be connected with separation feeding engine 45, separate feeding engine discharging
Separation ball valve is connected on pipe point two-way, every road discharge nozzle, for separation ball valve a46 and separation ball valve b47, separation ball valve a
One-level carnallite release unit 48 is connected to, separation ball valve b is connected to two grades of carnallite release units 49；The one-level carnallite departs from dress
The lower end put is connected to carnallite collecting pit 50, and the upper end of one-level carnallite release unit is connected to separate ball valve c51, separation ball valve c
It is connected in concentration liquid case, and pipeline a52 be connected with concentration material returning valve 53 by pipeline a；Two grades of carnallite release units
Upper end is connected to separate ball valve d54, and separation ball valve d is connected to be connected with crystallization and evaporation on pipeline a and pipeline b55, pipeline b simultaneously
Valve 56, crystallization and evaporation valve is connected to MVR evaporation and crystallization systems.
The dope for concentrating water tank is entered after flat ultra micro water filtration film one-level carnallite release unit by separating feeding engine
Heated up, temperature is upgraded to 80-110 DEG C and carries out high temperature circulation processing 5~10 minutes, the carnallite of high temperature section is removed, carnallite sinks
Form sediment and enter carnallite collecting pit, obtained dope returns to concentration water tank by dope material returning valve；Then it will concentrate in water tank through one
The dope that the release unit processing of level carnallite is obtained sends into circular treatment 5~10 minutes in two grades of carnallite release units, utilizes absorption
Principle further removes carnallite, makes to be evaporated crystallization into MVR evaporation and crystallization systems except carnallite dope obtains heat heating.
The MVR evaporation and crystallization systems include feeding engine d57, and feeding engine d is connected to connect on evaporating chamber 58, the evaporating chamber
It is connected with heat exchanger 59, heat exchanger and is connected with vapor recompression pump 60；The bottom of the evaporating chamber is connected with by discharging pump d61
Suction filtration tank 62, the top of evaporating chamber is connected to Roots's vapor recompression machine 63 by pipeline；In Roots's vapor recompression machine
Vavuum pump 64 is installed；The vavuum pump is connected to filtrate tank 65, and filtrate tank is connected with suction filtration tank, and vavuum pump is pressed again with steam
Contracting pump links together, and the mother liquor under vacuum pumping action in filtrate tank is in negative pressure state, and filtrate is stored under suction function
Mother liquor in tank returns evaporating chamber and continues evaporative crystallization.
Evaporating chamber by feeding engine d is initially entered by the dope for going denier carnallite technique to obtain, heat exchanger is passed through newly
Fresh steam is heated to dope, and two sections of steam of output can enter Roots's vapor recompression machine by vapor (steam) temperature in dope evaporation process
Rise goes successively to heat exchanger to dope heating evaporation, without lasting supplement original vol saturated vapor, Roots's vapor recompression machine
The water of generation enters condensation water tank 66.Dope, which is evaporated, reaches that hypersaturated state separates out crystal, then passes through discharging from evaporating chamber
Pump d is discharged into suction filtration tank and carries out being provided with vavuum pump in separation of solid and liquid, Roots's vapor recompression machine, the connection of vavuum pump filtrate tank,
Mother liquor under vacuum pumping action in filtrate tank is in negative pressure state, and the mother liquor being stored under suction function in filtrate tank is returned
Evaporating chamber continue evaporative crystallization, the salt that evaporative crystallization comes out contain sodium chloride reach more than 76% can be used for papermaking, snow melting agent or
Chlor-alkali industry.
Above-described embodiment is the specific descriptions carried out to the present invention, simply the present invention is further described, it is impossible to manage
Solve as limiting the scope of the present invention, it is nonessential that those skilled in the art makes some according to the content of foregoing invention
Modifications and adaptations are each fallen within protection scope of the present invention.
Claims (7)
1. a kind of garbage flying ash cement kiln synergic processing system, it is characterised in that：It includes the incineration of refuse flyash being sequentially connected
Tertiary effluent elution salt system, coagulating sedimentation remove removing heavy metals system, sodium filter and counter-infiltration preconcentration technique, go to denier carnallite system
System and MVR evaporation and crystallization systems；The washing water of the incineration of refuse flyash tertiary effluent elution salt system output is entered by pipeline
Coagulating sedimentation goes removing heavy metals system；Coagulating sedimentation goes the saliferous rate that removing heavy metals system is obtained to enter sodium for 1-2% solution
Filter and counter-infiltration preconcentration technique；The sodium filter and counter-infiltration preconcentration technique remove the calcium ions and magnesium ions in washing water, by saliferous
Rate is concentrated into 6%-8% dope for 1-2% solution, and 6%-8% dope is conveyed into denier carnallite system by carnallite
Remove, last nearly saturated solution is evaporated crystallization into MVR evaporation and crystallization systems；
It stores in a warehouse the incineration of refuse flyash tertiary effluent elution salt system including flying dust, and the lower end of the flying dust storage is communicated with spiral shell
Rotation conveyer a, the conveying worm a outlet are connected to first order washing desalter, first order washing desalter bag
Include agitator tank a；Water inlet pipe a and chemical feed pipe a have been respectively communicated with the agitator tank a；Flying dust, water and medicine in the agitator tank a
Liquid stirs into mud, and the mud that agitator tank a lower end is connected in slush pump a, agitator tank a is conveyed into caching by slush pump a
Mud in tank a, buffer tank a is conveyed into horizontal centrifuge a by slush pump b and is dehydrated；The horizontal centrifuge a is by mud
Isolate chloro ion-containing solution and aqueous and bioxin flying dust, chloro ion-containing solution goes to removing heavy metals system into coagulating sedimentation
System, aqueous and bioxin flying dust enters the second level and washes desalter；The second level washing desalter separates mud
Go out chloro ion-containing solution and secondary aqueous and bioxin flying dust, chloro ion-containing solution goes to removing heavy metals system into coagulating sedimentation
System, secondary aqueous and bioxin flying dust enters the third level and washes desalter；Third level washing desalter is isolated chloride
Solion and three aqueous and bioxin flying dusts, chloro ion-containing solution go removing heavy metals system, three times into coagulating sedimentation
The flying dust of aqueous Ji bioxin enters cement kiln, and flying dust becomes cement raw material after cement kiln is burned；
The coagulating sedimentation goes removing heavy metals system to include coagulative precipitation tank, and the left end of the coagulative precipitation tank passes through delivery pump a
It is connected to be communicated with liquid-feeding tube and chemical feed pipe d on two agitator tank d, and each agitator tank d；Pass through dosing on the chemical feed pipe d
Pump, which is connected with chemicals dosing plant, and chemicals dosing plant, is connected with water pipe；The coagulative precipitation tank bottom is connected with centrifugal dehydrator, mixes
Solidifying sedimentation basin top is connected with buffer pool, and buffer pool is connected to delivery pump b, and delivery pump b is connected to composite bag type filter, and multiple
Close bag filter lower end and be connected to centrifugal dehydrator；The heavy metal precipitation thing of coagulative precipitation tank bottom transports into centrifugal dehydrator
It is dehydrated, the liquid that the clear liquid on coagulative precipitation tank top is conveyed into buffer pool, buffer pool is conveyed into compound by delivery pump b
Bag filter, composite bag type filter falls the heavy metal not precipitated completely and contaminant filter, obtained heavy metal and impurity
Transport into centrifugal dehydrator to be dehydrated, obtained saliferous rate is handled for 1-2% solution into next step.
2. a kind of garbage flying ash cement kiln synergic processing system according to claim 1, it is characterised in that：It is described it is horizontal from
Scheming a charging aperture is connected to slush pump b discharging opening；The slag notch of the horizontal centrifuge a is connected to conveying worm b,
Horizontal centrifuge a liquid outlet is connected to coagulating sedimentation by drain pipe road a and goes removing heavy metals system；The conveying worm b
Provided with two discharging openings；The discharging opening that the second level washing desalter includes agitator tank b, each conveying worm b is connected
The slurries in agitator tank a b, each agitator tank b through the slurry in slush pump c feedings buffer tank b, buffer tank b through slush pump
D feedings horizontal centrifuge b is dehydrated；The slag notch of the horizontal centrifuge b is connected to conveying worm c, horizontal centrifuge b
Liquid outlet coagulative precipitation tank is connected to by drain pipe road b；The conveying worm c is provided with two discharging openings；Third level water
The discharging opening that salt elution device includes agitator tank c, each conveying worm c is connected in agitator tank a c, each agitator tank c
Slurries send into buffer tank c through slush pump e, the slurry in buffer tank c is dehydrated through slush pump f feedings horizontal centrifuge c, institute
The charging aperture for stating horizontal centrifuge c is connected to slush pump f discharging opening；The slag notch of the horizontal centrifuge c is connected to cement
Kiln.
3. a kind of garbage flying ash cement kiln synergic processing system according to claim 2, it is characterised in that：It is described each to stir
Mix be connected on tank b on water inlet pipe b, each agitator tank c be connected to water inlet pipe c, the water inlet pipe a, water inlet pipe b and
Water inlet pipe c is connected with inlet water tank respectively；It is connected on chemical feed pipe b, each agitator tank c and divides on each agitator tank b
Chemical feed pipe c is not connected with, and the chemical feed pipe a, chemical feed pipe b and chemical feed pipe c are connected on chemicals dosing plant；The chemicals dosing plant
Liquid outlet parallel connection have three groups of automatic control flow devices, three groups of automatic control flow devices control respectively chemical feed pipe a plus
Flow in pencil b and chemical feed pipe c, alarm can be sent when dose is not enough.
4. a kind of garbage flying ash cement kiln synergic processing system according to claim 1, it is characterised in that：The chemical feed pipe
The dosing valve of control dosing flow is installed on d；Priming valve is installed on the liquid-feeding tube.
5. a kind of garbage flying ash cement kiln synergic processing system according to claim 1, it is characterised in that：Sodium filter and
Counter-infiltration preconcentration technique includes sodium and filters component, and the sodium is filtered to be communicated with component on chemicals dosing plant a, and chemicals dosing plant a and connected
There is water pipe a；The water inlet end of the sodium filter component is connected to filter a, and the condensed water of sodium filter component output is connected to by pipeline
Intermediate water tank, the fresh water of sodium filter component output is connected to counter-infiltration water tank by pipeline；The bottom of the intermediate water tank is connected to
Feeding engine a, feeding engine a water side are connected to filter b, and the filter b port of export is connected to counter-infiltration pre-concentration device；Institute
State to be communicated with counter-infiltration pre-concentration device on chemicals dosing plant b, and chemicals dosing plant b and be connected with water pipe b；The counter-infiltration pre-concentration
The condensed water of device output is recycled by water pipe, and the fresh water of counter-infiltration pre-concentration device output is connected to reverse osmosis by water pipe
In permeable case.
6. a kind of garbage flying ash cement kiln synergic processing system according to claim 1, it is characterised in that：It is described go it is atomic
Measuring carnallite system includes concentration liquid case, and the upper end of the concentration liquid case is communicated with feed tube, the lower end connection of the concentration liquid case
Have and separation feeding engine is connected with drain pipe, the drain pipe, the discharge nozzle of separation feeding engine divides to be divided on two-way, every road discharge nozzle
Separation ball valve is not connected with, and for separation ball valve a and separation ball valve b, separation ball valve a is connected to one-level carnallite release unit, separated
Ball valve b is connected to two grades of carnallite release units；The lower end of the one-level carnallite release unit is connected to carnallite collecting pit, and one-level is miscellaneous
The upper end of salt release unit is connected to separate ball valve c, and separation ball valve c is connected to connect in concentration liquid case, and pipeline a by pipeline a
It is connected to concentration material returning valve；The upper end of two grades of carnallite release units is connected to separate ball valve d, and separation ball valve d is connected to simultaneously
Crystallization and evaporation valve is connected with pipeline a and pipeline b, pipeline b, crystallization and evaporation valve is connected to MVR evaporation and crystallization systems.
7. a kind of garbage flying ash cement kiln synergic processing system according to claim 1, it is characterised in that：The MVR steams
Sending out crystal system includes feeding engine d, and feeding engine d, which is connected to be communicated with heat exchanger, heat exchanger on evaporating chamber, the evaporating chamber, to be connected
It is connected to vapor recompression pump；The bottom of the evaporating chamber is connected with suction filtration tank by discharging pump d, and the top of evaporating chamber passes through pipeline
It is connected to Roots's vapor recompression machine；Vavuum pump is installed in Roots's vapor recompression machine；The vavuum pump is connected to filter
Flow container, filtrate tank is connected with suction filtration tank, and vavuum pump links together with vapor recompression pump, the filtrate tank under vacuum pumping action
Interior mother liquor is in negative pressure state, and the mother liquor being stored under suction function in filtrate tank returns evaporating chamber and continues evaporative crystallization.
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| CN201510524264.1A CN105107820B (en) | 2015-08-25 | 2015-08-25 | A kind of garbage flying ash cement kiln synergic processing system |
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| CN106391663B (en) * | 2016-11-03 | 2018-09-21 | 湖州森诺环境科技有限公司 | A kind of flying dust harmless treatment resource recycling device and processing method |
| CN107445497B (en) * | 2017-07-21 | 2019-12-13 | 金圆环保股份有限公司 | Method for treating rectification residues, tar and waste asphalt by using cement kiln in cooperation |
| CN107309251B (en) * | 2017-08-07 | 2023-06-02 | 安徽今朝环保科技有限公司 | Industrial slag salt harmless transferring and treating device and use method |
| CN107597795B (en) * | 2017-09-07 | 2020-12-01 | 中洁蓝环保科技有限公司 | System and method for recycling and treating household garbage incineration fly ash |
| CN108117286B (en) * | 2018-02-05 | 2023-09-26 | 北京中科国润环保科技有限公司 | Washing and desalting system and method for waste incineration fly ash or kiln ash |
| CN109054750B (en) * | 2018-09-17 | 2021-03-02 | 杭州秀澈环保科技有限公司 | Process for preparing snow-melting agent by utilizing garbage fly ash |
| CN109396162B (en) * | 2018-12-18 | 2024-01-16 | 杭州秀澈环保科技有限公司 | Energy-saving treatment process of garbage fly ash |
| CN112030000A (en) * | 2020-08-18 | 2020-12-04 | 殷实 | Recovery system of low-melting-point heavy metal in gasification and melting state and implementation method |
| CN112275764B (en) * | 2020-08-31 | 2022-04-08 | 光大绿色环保管理（深圳）有限公司 | Hazardous waste incineration fly ash water washing utilization method and device |
| CN112225370A (en) * | 2020-09-01 | 2021-01-15 | 湖南博一环保科技有限公司 | Water washing and heavy metal removing process suitable for steel mill fly ash |
| CN113105138B (en) * | 2021-04-16 | 2023-09-19 | 北京中科国润环保科技有限公司 | Treatment method and system for water washing and dechlorination of waste incineration fly ash and evaporation, quality separation and crystallization of water washing liquid |
| CN114230070A (en) * | 2021-11-21 | 2022-03-25 | 江苏卓博环保科技有限公司 | Incineration fly ash washing water recycling treatment device and method |
| CN115026100A (en) * | 2022-04-22 | 2022-09-09 | 河北绿鸿环保科技有限公司 | Waste incineration fly ash treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4078200B2 (en) * | 2002-12-25 | 2008-04-23 | 株式会社アクトリー | Detoxification method for incineration fly ash, etc. (low temperature) |
| CN1724413A (en) * | 2005-06-24 | 2006-01-25 | 华南理工大学 | Process for degrading high chlorodioxin kinds pollutant by combined biological ecological system |
| CN104084415A (en) * | 2014-07-02 | 2014-10-08 | 天津壹鸣环境工程有限公司 | Technology for reducing waste incineration fly ash via water logging pretreatment |
| CN104843923B (en) * | 2015-05-11 | 2016-08-24 | 北京中科国润环保科技有限公司 | The washing melded system of incineration of refuse flyash |
| CN204912257U (en) * | 2015-08-25 | 2015-12-30 | 湖州森诺膜技术工程有限公司 | Rubbish flying dust cement kiln is processing system in coordination |
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