CN105968349A - Chelating agent for waste incineration and application thereof - Google Patents
Chelating agent for waste incineration and application thereof Download PDFInfo
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- CN105968349A CN105968349A CN201610364113.9A CN201610364113A CN105968349A CN 105968349 A CN105968349 A CN 105968349A CN 201610364113 A CN201610364113 A CN 201610364113A CN 105968349 A CN105968349 A CN 105968349A
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- activated carbon
- storehouse
- flying dust
- reaction tower
- chelating agen
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
- A62D3/33—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemical fixing the harmful substance, e.g. by chelation or complexation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/0622—Polycondensates containing six-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms
- C08G73/0633—Polycondensates containing six-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms with only two nitrogen atoms in the ring
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/08—Toxic combustion residues, e.g. toxic substances contained in fly ash from waste incineration
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/40—Inorganic substances
- A62D2101/43—Inorganic substances containing heavy metals, in the bonded or free state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention relates to the technical field of waste treatment, in particular to a chelating agent for waste incineration and application thereof. According to the chelating agent, dimethylformamide and piperazine are mixed according to the proportion of 1:2 and then subjected to catalytic polymerization under the alkaline condition, dithiocarbamic acid type chelating resin is obtained, a polar group of -N-C-S containing in the chelating resin adsorbs noble metallic ions, and insoluble dithiocarbamate is formed; a purification technology including a semi-dry method rotating a spray reaction tower, a dry method spraying calcium hydroxide, activated carbon spraying and dust collection through a bag-type dust collector is adopted, and it is further guaranteed that the emission concentrations of heavy metals and dioxin meet emission standards.
Description
[technical field]
The present invention relates to technical field of waste treatment, a kind of chelating agen for waste incineration and
Its application.
[background technology]
Garbage disposal refers to daily life or provides the movable produced solid waste of service for daily life
Process, including house refuse Sources decreasing, cleaning, categorised collection, store, transport, process, locate
Put and related management activity.Minimizing, innoxious, resource, saving fund, saving are followed in garbage disposal
The criterions such as soil and resident's satisfaction, treatment in accordance with local conditions, integrated treatment, step by step decrement.Such as in order to be readily transported
With minimizing expense, often it is compressed processing；In order to reclaim utility, often need in addition break process and sorting
Process.Burn or landfill makees final disposal method if used, also need rubbish is first made suitable broken,
Sortings etc. process, and make disposal more effectively.Garbage incineration technology owing to can effectively reduce the volume of rubbish,
Reclaim the energy, it will become China's garbage as resource and the important research of volume reduction treatment technology and developing direction.
During the burning of rubbish, organic matter in garbage mainly discharges with the form of gaseous material；And nothing
Machine material then primarily forms solid particulate matter, and wherein the bigger solid of granule is deposited on bottom incinerator and on fire grate,
Being referred to as bottom ash, those tiny particulate matters then swim in flue gas, together enter gas cleaning with flue gas
System, domestic garbage incineration flyash produces ground must carry out the stabilisation cured of necessity, and stabilisation solidifies
Can transport after process, transport need to use private carrier, and the mode using airtight collection and conveying is defeated
Deliver to flying dust warehouse, after leaching toxicity test is qualified, delivers to landfill yard landfill.
Owing to heavy metal is the main harm thing in flying ash, the various changes carried out for heavy metal in flying dust
Learn chemical stabilization technology to be increasingly subject to pay attention to, especially chemical agent stabilisation and other stabilization method phase
Ratio, have that the simple energy consumption of technique is low, increase-volume than the advantage such as little, moderate cost is the cheapest, the most all
It it is considered as a developing direction of stabilizing fly ash.When a metal ion species and an electronq donor combine
Product is referred to as complex or coordination compound, if the material combined with metal (molecule or ion) contains
Two or more electron donating groups, during so that forming the complex with circulus, then product is not
Opinion is neutral molecule or the ion with electric charge is referred to as chelate, the such cyclization of inner complex
Effect is referred to as chelation, and electronq donor then becomes chelating agen.In a chelate metal ion with
Respectively give between electronics, owing to key varies in size with bond polarity, be divided into substantially ion-type and substantially covalency
Two kinds of type, this depends primarily on metal and to the type of electronic atom, owing to covalent bond strength ratio ionic bond is strong,
So, the chelate formed when central metallic ions is strong with ligand bond covalency is more stable.Chelating agen
Stable pharmaceutical as heavy metal has lot of advantages, and it can be combined with heavy metal ion and form stable difficulty
It is dissolved in the chelate of water, effectively stops the leaching of heavy metal.Owing to the efficiency of stabilizing heavy metal is high, required
Chelating dosage few, flying dust after treatment or sewage typically can reach landfill or the discharge mark of country
Accurate.
[summary of the invention]
The present invention is according to having producing and the phenomenon of discharge of dioxin in existing Refuse Incineration Process, for
Preferably remove removing heavy metals and dioxin, it is provided that a kind of chelating agen for waste incineration and application, rubbish
Rubbish processing system, by spraying into activated carbon in the flue before entering cleaner unit, uses activated carbon adsorption heavy metal
And dioxin, thus ensure that the concentration of emission of heavy metal and dioxin reaches discharge standard.
To achieve these goals, designing a kind of chelating agen for waste incineration, this chelating agen is with diformazan
Catalytic polymerization in the basic conditions after the ratio mixing of base Methanamide and piperazine proportionally 1:2, prepares amino
Dithiocarbonic acid type chelating resin.
Described aminodithioformic acid type chelating resin optionally adsorbs noble metal Au, Ag, Pt and a huge sum of money
Belong to IONS OF H g, Pb, Cu, form the Aminodithioformate of indissoluble.
The application of the chelating agen of a kind of waste incineration, described chelating agen can apply to discharge treating system, institute
The discharge treating system stated include lime silo, reaction tower, activated carbon storehouse, Sal Nitri ash silo, sack cleaner and
Stabilizing fly ash gasifying device, described lime silo transports to pulping tank through Calx supply conveyer, stirs with fresh water (FW)
Exporting after mixing reaction to slurry-supplying can, the lime white in slurry-supplying can mixes further with fresh water (FW), passes through lime white
Being pumped into the rotary atomizer on reaction tower top, the input port of described rotary atomizer is by lime white, technique
Water, nebulizer cooling water, instrument air, boiler smoke mixing, be injected in reaction tower with the form of atomization
Reactant on, be provided with flying dust delivery outlet bottom reaction tower, flying dust delivery outlet is connected to flying dust storehouse through pipeline,
The stabilizing fly ash gasifying device that flying dust is transported to be close to ash silo from flying dust storehouse by conveying worm enters through chelating agen
Row processes, and reaction tower side offers flue outlet, and activated carbon is delivered to instead by activated carbon storehouse air
That answers tower flue gas pipe outlet sprays into a little so that spray into activated carbon in the flue before entering sack cleaner
Adsorption of Heavy Metals and dioxin, slaked lime is delivered to the flue of reaction tower outlet by Sal Nitri ash silo air
Outlet, sprays into the flue between reaction tower and sack cleaner by the calcium hydroxide that calcium hydroxide charging gear is discharged
In, react with the sour gas SOX, HCl in flue gas, and with calcium hydroxide reaction after flue gas with
Flying dust and various dust enter sack cleaner, and flue gas adsorbs on filter bag surface, and by filter bag surface
Flue gas is fully contacted, and the flue gas after being processed by blower fan is discharged through chimney, and flying dust is through sack cleaner bottom
The flying dust outlet being provided with is delivered to flying dust storehouse.
Described activated carbon storehouse is stored active charcoal, in activated carbon storehouse, is respectively mounted stuff level switch up and down, on
The stuff level switch detection high charge level in portion, the stuff level switch of bottom detects low material position, and top, activated carbon storehouse is provided with
Cleaner unit, described cleaner unit is with exhaust fan, during activated carbon storehouse feeds, the sky in activated carbon storehouse
The gas exhaustor by cleaner unit with film viewing screen is arranged to outdoor by exhaust fan, the pressure of release activated carbon,
Ensureing that activated carbon can inject feed bin smoothly, bottom, activated carbon storehouse sets push-pull valve and disk feeder, and divides
Not Pei Zhi two discharging openings, corresponding one of each discharging opening burns line, and each discharging opening divides into active carbon quantitative
Each one of batcher, each doser is responsible for supplying suitable activated carbon, doser to a line
Activated carbon out enters injection apparatus, and the power that the air then provided with injection blower fan is conveying, with sky
Gas activated carbon is delivered to reaction tower outlet spray into a little, two English and heavy metal in flue gas then use Roots's wind
Machine is transported in the flue of reaction tower outlet by conveyance conduit.
Described Sal Nitri ash silo top is provided with groove tank car feeding interface, be respectively equipped with up and down in storehouse level-sensing device in order to
Expecting the height of position in monitoring storehouse, Sal Nitri ash silo bottom sets push-pull valve and disk feeder, and is provided with two dischargings
Mouthful, corresponding one of each discharging opening burns line, and each discharging opening divides into each one of slaked lime constant feeder,
Each doser is each responsible for burning line to correspondence and supplies suitable slaked lime powder, and discharge outlet is equipped with
Motor drives dosing valve and obstruction alarm device, and doser pulverized limestone out enters injection apparatus,
The power that air is conveying that injection apparatus is provided by injection blower fan, is delivered to react by slaked lime with air
What tower exported sprays into a little, and described slaked lime ejector uses Venturi tube structure, forms negative pressure and enter at charging aperture
Material, slaked lime sprays into reaction tower outlet conduit through venturi-type eductors, from the air of injection blower fan by hydrogen-oxygen
Change the calcium hydroxide that calcium charging gear discharges and spray in the flue between reaction tower and sack cleaner, and in flue gas
Sour gas SOX, HCl reacts, and with calcium hydroxide reaction after flue gas with flying dust and various powder
Dirt enters sack cleaner.
The described flying dust in stabilizing fly ash gasifying device is transported to tight with ash silo by conveying worm from flying dust storehouse
The stabilizing fly ash gasifying device faced, the flying dust feeding exported from waste incineration processing system and sack cleaner flies
After ash silo, be quantitatively transferred to biaxial rneader through conveyer, simultaneously cement from cement storage bin through cement scale hooper
Being quantitatively transferred to biaxial rneader, chelating agen prepares in-tank mixing with the water from fresh water (FW) pipeline at chelating agen
Dilution, through dilution after chelating agen diluent also by delivery pump start, by chelating agen weighing pot quantitatively to
Flying dust mixing blender supply chelating agen diluent, flying dust, cement and chelating agen are abundant in biaxial rneader
Mixing, the heavy metal in flying dust is reacted with chelating agen, generates chelate thus stabilized, and flying dust is mixing to be stirred
Mix the solidfied material transfer car(buggy) after machine out stabilized and be transported to appointed place landfill, complete whole flying dust steady
Determining processes.
Guided wave radar continuous material level meter, the reality of monitoring material position it is provided with in described activated carbon storehouse and Sal Nitri ash silo storehouse
Shi Bianhua so that all level signals all can facilitate operations staff to operate monitoring with teletransmission to central control room.
Injection fan outlet pipeline is provided with pressure transducer, and monitoring lime injection system is run in real time, and
Change according to loine pressure judges whether pipeline blocking occurs.
Described activated carbon and slaked lime are discharged into by being positioned at the electric block of activated carbon storehouse and Sal Nitri ash silo Cang Ding
In storehouse and store.
The present invention compared with the existing technology, has an advantage in that: chelating agen uses aminodithioformic acid type chelating
Resin, the polar group N C S absorption precious metal ion that it contains forms the aminodithioformic acid of indissoluble
Salt, thus process the noble metal in waste incineration, and refuse disposal system uses semidry method, and (rotating spraying is anti-
Answer tower) the purification technique of+dry method (injection calcium hydroxide)+activated carbon injection+sack cleaner, activated carbon adsorption
The heavy metal contaminants such as dioxin, Hg；Calcium hydroxide, by injection calcium hydroxide, is sprayed into de-by Sal Nitri ash silo
In flue between acid tower and sack cleaner, with the sour gas SO in flue gasX, HCl etc. reacts,
Sack cleaner is entered with flying dust and various dust with the flue gas after calcium hydroxide reaction；Sack cleaner will
Flue gas adsorbs on filter bag surface, is fully contacted with by the flue gas on filter bag surface, and the flying dust of discharge enters and flies
Ash stabilising arrangement uses chelating agen to process, and reaches the purpose of incineration treatment of garbage discharge standard, and technique
Simply, energy consumption is low, expense is relatively low, applied widely.
[accompanying drawing explanation]
Fig. 1 is the composition schematic diagram of the waste incineration discharge treating system in the present invention；
Fig. 2 is activated carbon storehouse in the present invention, the connection diagram of Sal Nitri ash silo；
Fig. 3 is stabilizing fly ash gasifying device connection diagram in the present invention；
Fig. 4 is stabilizing fly ash gasifying device handling process schematic diagram in the present invention；
Specify Fig. 1 as the Figure of abstract of the present invention.
[detailed description of the invention]
The invention will be further described below in conjunction with the accompanying drawings, and attachment structure and the principle of this system are special to this
It is the most clearly for the people of industry.Should be appreciated that specific embodiment described herein is only in order to explain
The present invention, is not intended to limit the present invention.
Embodiment 1
Having the 5th race as coordination atom in chelating agen, affect Stability of Chelate mainly has following factor
1. metal ion forms the power of ability of immigrants as chelate；2. the alkalescence of chelating agen is strong and weak and bonded atom
Character；3. the chelate structure impact on stability.Again can be chelating by chelate dissolubility in water
Agent is divided into two classes, a class mineral surfaces formed a kind of stable, hydrophobic, in water insoluble or
The metallo-chelate that dissolubility is the least, is also referred to as Chelating Collectors in floatable minerals；Another kind of and golden
Belong to ion and form stable, that hydrophilic is strong, soluble in water chelate, floatable minerals is also claimed
For Chelate depressor, for the chelating agen that incinerating flyash, heavy metal is stable.
Chelating agen in the present invention be mix with the ratio of dimethylformamide and piperazine proportionally 1:2 after
Catalytic polymerization under the conditions of alkalescence, prepares aminodithioformic acid type chelating resin, due to aminodithioformic acid
Type chelating resin contains substantial amounts of polar group N C S, and in polar group, sulphur atom radius is relatively big, electronegative,
And be prone to polarization deformation and produce negative electric field, it can catch cation and tend to bonding and generate the amino of indissoluble
Dithio formate (DTC salt), thus optionally absorption waste incineration in produce noble metal Au, Ag,
Pt and heavy metal ion Hg, Pb, Cu, form the Aminodithioformate of indissoluble.
Seeing Fig. 1, the system utilizing chelating agen to make includes lime silo, reaction tower, activated carbon storehouse, slaked lime
The parts such as storehouse, cleaner unit, stabilizing fly ash gasifying device.Burn away the refuse in reaction tower, which is provided with rotary-atomizing
Device, lime white, fresh water (FW), nebulizer cooling water, instrument air, boiler smoke are mixed by rotary atomizer,
Being injected on the reactant in reaction tower with the form of atomization, the flying dust after burning is transported to flying dust storehouse, by
Stabilizing fly ash gasifying device processes, when burning produce flue gas then by activated carbon storehouse, Sal Nitri ash silo,
Sack cleaner Adsorption of Heavy Metals, dioxin, and with the sour gas SO in flue gasX, HCl reacts,
Entering sack cleaner with the flue gas after calcium hydroxide reaction with flying dust and various dust, flue gas absorption is in filter
On bag surface, being fully contacted with by the flue gas on filter bag surface, the flue gas after being processed by blower fan is through chimney
Discharging, the flying dust outlet that flying dust is provided with through sack cleaner bottom is delivered to flying dust storehouse.
Activated carbon storehouse, the composition connection diagram of Sal Nitri ash silo see Fig. 2, owing to having in Refuse Incineration Process
The generation of dioxin and discharge, therefore to preferably remove removing heavy metals and dioxin, by removing entering cloth bag
Activated carbon is sprayed into, with activated carbon adsorption heavy metal and dioxin, it is ensured that heavy metal in flue before dirt device
And the concentration of emission of dioxin reaches discharge standard.Owing to activated carbon has great specific surface area, therefore only
Want activated carbon to mix homogeneously with flue gas and reach the enough purification efficiency that just can reach requirement time of contact.
After activated carbon sprays into flue, in flue, i.e. start to adsorb the heavy metal contaminants such as dioxin, Hg, but not
Have and reach saturated, enter in sack cleaner subsequently to adsorb together with flue gas on filter bag surface, and pass through filter bag
The flue gas on surface is fully contacted, and is finally reached removal heavy metal in flue gas and the purpose of dioxin.
Activated carbon is stored in activated carbon storehouse, transport vehicle deliver to the activated carbon of factory by activated carbon position in storehouse in storehouse
The electric block that top is installed unloads and puts in storage interior and store, and the capacity in activated carbon storehouse is 5m3, it is possible to meet two burnings
The line activated carbon dosage of properly functioning 7 days.Active carbon material feeding is provided with manual feeding manner, and arranges N2
Protection system, is provided with two stuff level switch in activated carbon storehouse, the stuff level switch detection high charge level on top, under
The stuff level switch in portion detects low material position, and high charge level represents that activated carbon stops the material position of feeding, and low material position represents alive
Property charcoal storehouse should receive the material position of activated carbon.It is provided with guided wave radar continuous material level meter in storehouse, material position can be monitored
Real-time change, all level signals all can facilitate operations staff to operate monitoring with teletransmission to central control room,
The lighting installation of maintenance platform stair and necessity it is equipped with at stuff level switch.Activated carbon storehouse sidepiece sets rupture pressure disc,
Explosion time gas releases from rupture pressure disc, it is to avoid device damage.Temperature element is installed, in order to supervise in activated carbon storehouse
Survey temperature in activated carbon storehouse；Arch breaking apparatus is installed at the bottom of storehouse.At activated carbon storehouse lower cone bucket, bulkhead vibration is installed
Device, in order to avoid activated carbon produces bridging arch camber, is unfavorable for that activated carbon draws off.Activated carbon feed hopper bottom is equipped with manually
Push-pull valve, it is simple to repair and maintenance, connects cradle feeder under hand operated gate valve.
Top, activated carbon storehouse is provided with cleaner unit, and this cleaner unit uses anti-static filter material, prevents electrostatic spark from drawing
Playing blast, cleaner unit is with exhaust fan, and during activated carbon storehouse feeds, the air in activated carbon storehouse passes through
Cleaner unit and the exhaustor with film viewing screen are arranged to outdoor by blower fan, the pressure of release activated carbon, it is ensured that activity
Charcoal can inject feed bin smoothly.Cleaner unit not only runs during activated carbon storehouse receives activated carbon, and
And the operation of regular intervals of time after receiving activated carbon.
Activated carbon storehouse divides into push-pull valve and disk feeder, joins two discharging openings, corresponding one of each discharging opening
Burn line.Batcher is VFC, can be according to flue gas flow, by controlling the speed of cradle feeder
Regulation activated carbon injected volume, activated carbon so by pneumatic conveying to spray site.Each discharging opening divides into activity
Each one of charcoal constant feeder, each doser is responsible for supplying suitable activated carbon, quantitatively to a line
Dispenser activated carbon out enters injection apparatus, doser accurate measurement, and conveying is stable, then with
The power that air is conveying that injection blower fan provides, is delivered to spraying into of reaction tower outlet with air by activated carbon
Point.The hermetically sealed design of activated carbon spraying system, it is ensured that whole working place neat and tidy, feeding use
Electric block feeding operates, and greatly reducing charging environmental pollution.Opening roof scrubber during feeding can
To be prevented effectively from flying upward of activated carbon, at each equipment interface use silicone rubber seal gasket, and smear fluid sealant with
Strengthen sealing effectiveness.Conveying fan provides power for conveying.Every strip transmission line is equipped with pressure switch with display
Transfer pipeline is with or without blocking.Therefore, by pneumatic system, activated carbon is transported to exhaust gases passes by pipeline
In and sprayed by nozzle, spray site is against downstream, half dry type reaction tower exit.Activated carbon eductor uses
Venturi tube structure, forms negative pressure charging at charging aperture, ejector uses corrosion-resisting wear-proof material to make, and designs
Anti-block apparatus.Activated carbon injection line all uses the big bend design of a diameter of 1m, and this design i.e. reduces
The abrasion of elbow is prevented effectively from again the blockage problem that elbow easily occurs, each elbow junction all uses method
Blue connection, convenient maintenance.
Running for monitoring activated carbon spraying system in real time, injection fan outlet pipeline is provided with pressure transducer,
Change according to loine pressure judges whether activated carbon pipeline blocking occurs, can avoid owing to pipeline blockage is produced
Raw back-pressure causes activated carbon to leak the environmental pollution and inflammable and explosive harm caused.It addition, be additionally provided with N2
Protection system (or other firebreak devices), rises to 80 DEG C in activated carbon bunker temperature, is automatically filled with inertia
Gas, synchronous signal is sent to central control room, through after a while, at a temperature of drop to normal condition,
SR pressed by central control room, and related valve can be restored to normal condition.
Sal Nitri ash silo has following two function: spray in advance and dry desulfurization, from the air of injection blower fan
The calcium hydroxide that calcium hydroxide charging gear is discharged is sprayed in the flue between extracting tower and sack cleaner, with
Sour gas SO in flue gasX, HCl etc. reacts, with calcium hydroxide reaction after flue gas with flying dust
Sack cleaner is entered with various dust.The main uses of this system is: between the incinerator start and stop campaign,
Owing to exhaust gas temperature is low, semidry method deacidification system cannot bringing normally into operation, now can start dry powder injection
System, reaches the purpose of deacidification, prevents high-concentration acidic wastewater gas from sack cleaner is caused corrosion.New cloth bag
Needing after installing, with pulverized limestone, cloth bag is carried out pre-spraying, setting up of this system makes pre-spray coating operations become simple height
Effect.When being used alone dry process, when putting into proper amount of pulverized limestone, its deacidification effect can reach
Identical with semidry process.
Sal Nitri ash silo design volume is 30m3, it is ensured that 2 lines lime storage amount of continuous 1 day.Calx
Storehouse is provided with groove tank car feeding interface, and this interface is positioned at away from ground 1.0m eminence, it is simple to feeding operates.Lime silo
It is provided with level-sensing device, in storehouse can be monitored, expects the height of position.Sal Nitri ash silo sets disk feeder at the bottom of storehouse, and disk is given
The feeding coal of material machine adjusts rotating speed by converter, according to SO2And the concentration of emission of HCl adjusts pulverized limestone
Emitted dose, lime silo sets two outlets, and each outlet is equipped with motor and drives dosing valve and blocking to report to the police
Device, each doser is responsible for supplying suitable slaked lime powder to line, and doser is out
Pulverized limestone enters injection apparatus, doser accurate measurement, and conveying is stable, then provides with injection blower fan
The power that air is conveying, with air, slaked lime is delivered to spraying into a little of reaction tower outlet.Slaked lime sprays
Emitter uses Venturi tube structure, forms negative pressure charging at charging aperture.Ejector uses corrosion-resisting wear-proof material to make,
And design anti-block apparatus.Lime injection pipeline all uses the big bend design of a diameter of 1m, this design
The abrasion i.e. reducing elbow is prevented effectively from again the blockage problem that elbow easily occurs.Each elbow junction is whole
Use Flange joint, convenient maintenance.Arch breaking apparatus it is provided with, such as fluidized plate, to prevent from leading because of bridge formation at the bottom of storehouse
Cause discharging the most smooth.
During rotary sprayer is safeguarded, incinerator smoke evacuation is directly entered sack cleaner and is then easy to dedusting
Device causes damage, and starts dry powder spraying system, not only can make flue gas qualified discharge but also avoid high-concentration acidic wastewater
Sack cleaner is caused corrosion by gas.
The hermetically sealed design of this system, it is ensured that whole working place neat and tidy, feeding can use sealing
The direct feeding of tank car, it would however also be possible to employ electric block thermal technology's feeding operates, opens roof scrubber during feeding
Flying upward of dust can be prevented effectively from, at each equipment interface use silicone rubber seal gasket, and smear fluid sealant with
Strengthen sealing effectiveness.
Running for monitoring lime injection system in real time, injection fan outlet pipeline is provided with pressure transducer,
Change according to loine pressure judges whether pipeline blocking occurs.
Activated carbon injection roots blower shares roots blower with slaked lime injection, and is equipped with 2 in the entire system
Platform injection roots blower, 1 is standby with 1, and blower fan margin design is maximum functional air quantity 120%, and pressure margin is
The 135% of Max pressure loss.
Stabilizing fly ash processing means is used to process the flying of reaction tower output in waste incineration treatment apparatus
Ash, sees Fig. 3, the raw flying dust amount about 18t/d of this refuse burning system common property, is stored in 1 150m3Ash
In storehouse, stabilizing fly ash processing system uses cement as stabilization material, is equipped with chelating agen and cement mixing
Stabilization process, enough for ensureing stabilizing fly ash facility ability, stabilizing fly ash facility scale presses this
Mesh largest production scale works weekly 4～5 days (one class of system), work every day one class 6-8h design, and considers
Product storage storehouse after solidification and Aided design.Flying dust from incineration plant smoke processing system sends into flying dust storage
Behind storehouse, being quantitatively transferred to the mixing blender of flying dust through conveyer, cement is fixed through conveyer from cement storage bin simultaneously
Amount is delivered to the mixing blender of flying dust, and chelating agen diluent starts also by delivery pump, quantitatively mixing to flying dust
Blender supply chelating agen.Flying dust, cement and chelating agen are sufficiently mixed in the mixing blender of flying dust, flying dust
In heavy metal react with chelating agen, generate chelate thus stabilized, flying dust mixing blender is out
Solidfied material transfer car(buggy) after stabilized is transported to appointed place landfill, so far completes at whole stabilizing fly ash
Reason process.
Claims (9)
1. the chelating agen for waste incineration, it is characterised in that described chelating agen be with dimethylformamide and
Catalytic polymerization in the basic conditions after the ratio mixing of piperazine proportionally 1:2, prepares amino dithio first
Acid type chelating resin.
A kind of chelating agen for waste incineration, it is characterised in that described amino two
Bamic acid type chelating resin optionally adsorb noble metal Au, Ag, Pt and heavy metal ion Hg, Pb,
Cu, forms the Aminodithioformate of indissoluble.
3. the application of the chelating agen of a waste incineration as claimed in claim 1, it is characterised in that described chelating
Agent can apply to discharge treating system, discharge treating system include lime silo, reaction tower, activated carbon storehouse,
Sal Nitri ash silo, sack cleaner and stabilizing fly ash gasifying device, described lime silo is through Calx supply conveyer
Transport and export to slurry-supplying can, the lime white in slurry-supplying can and work to pulping tank, with fresh water (FW) stirring reaction
Skill water mixes further, is sent into the rotary atomizer on reaction tower top, described rotation by lime slurry pump
Lime white, fresh water (FW), nebulizer cooling water, instrument air, boiler smoke are mixed by the input port of nebulizer
Close, be injected on the reactant in reaction tower with the form of atomization, bottom reaction tower, be provided with flying dust delivery outlet,
Flying dust delivery outlet is connected to flying dust storehouse through pipeline, and flying dust is transported to and ash from flying dust storehouse by conveying worm
The stabilizing fly ash gasifying device that storehouse is close to processes through chelating agen, and reaction tower side offers fume pipe and says
Mouthful, activated carbon storehouse air activated carbon is delivered to reaction tower flue outlet spray into a little so that
Spraying into activated carbon adsorption heavy metal and dioxin in entering the flue before sack cleaner, Sal Nitri ash silo is used
Slaked lime is delivered to the flue outlet of reaction tower outlet by air, is discharged by calcium hydroxide charging gear
Calcium hydroxide spray in the flue between reaction tower and sack cleaner, with the sour gas SO in flue gasX,
HCl reacts, and removes with flying dust and various dust entrance cloth bag with the flue gas after calcium hydroxide reaction
Dirt device, flue gas adsorbs on filter bag surface, is fully contacted with by the flue gas on filter bag surface, passes through blower fan
Flue gas after processing is discharged through chimney, the flying dust outlet conveying that flying dust is provided with through sack cleaner bottom
To flying dust storehouse.
The discharge treating system of a kind of waste incineration additive the most as claimed in claim 2, it is characterised in that described
Activated carbon storehouse in store active charcoal, be respectively mounted stuff level switch, the material on top in activated carbon storehouse up and down
Bit switch detection high charge level, the stuff level switch of bottom detects low material position, and top, activated carbon storehouse is provided with dedusting
Device, described cleaner unit is with exhaust fan, during activated carbon storehouse feeds, the air in activated carbon storehouse
Exhaustor by cleaner unit with film viewing screen is arranged to outdoor by exhaust fan, the pressure of release activated carbon
Power, it is ensured that activated carbon can inject feed bin smoothly, bottom, activated carbon storehouse sets push-pull valve and disk feeder,
And it being respectively configured two discharging openings, corresponding one of each discharging opening burns line, and each discharging opening divides into activity
Each one of charcoal constant feeder, each doser is responsible for supplying suitable activated carbon to a line, fixed
Amount feeding device activated carbon out enters injection apparatus, and the air then provided with injection blower fan is for conveying
Power, sprays into a little with what activated carbon was delivered to reaction tower outlet by air, two English in flue gas and a huge sum of money
Belong to and being then transported in the flue of reaction tower outlet by conveyance conduit with roots blower.
The discharge treating system of a kind of waste incineration additive the most as claimed in claim 2, it is characterised in that described
Sal Nitri ash silo top be provided with groove tank car feeding interface, be respectively equipped with level-sensing device in storehouse up and down in order to monitor storehouse
The height of interior material position, Sal Nitri ash silo bottom sets push-pull valve and disk feeder, and is provided with two discharging openings,
Corresponding one of each discharging opening burns line, and each discharging opening divides into each one of slaked lime constant feeder, often
Individual doser is each responsible for burning line to correspondence and supplies suitable slaked lime powder, and discharge outlet is equipped with
Motor drives dosing valve and obstruction alarm device, and doser pulverized limestone out enters injection dress
Put, the power that air is conveying that injection apparatus is provided by injection blower fan, with air, slaked lime is carried
Spraying into a little to what reaction tower exported, described slaked lime ejector uses Venturi tube structure, shape at charging aperture
Becoming negative pressure charging, slaked lime sprays into reaction tower outlet conduit through venturi-type eductors, from injection blower fan
The calcium hydroxide that calcium hydroxide charging gear is discharged is sprayed into the cigarette between reaction tower and sack cleaner by air
In road, with the sour gas SO in flue gasX, HCl reacts, and with calcium hydroxide reaction after cigarette
Flying dust by the band of gas and various dust enters sack cleaner.
The discharge treating system of a kind of waste incineration additive the most as claimed in claim 2, it is characterised in that described
Stabilizing fly ash gasifying device in flying dust be transported to from flying dust storehouse to be close to ash silo by conveying worm
Stabilizing fly ash gasifying device, the flying dust exported from waste incineration processing system and sack cleaner sends into flying dust
Behind storehouse, be quantitatively transferred to biaxial rneader through conveyer, simultaneously cement from cement storage bin through cement scale hooper
Being quantitatively transferred to biaxial rneader, chelating agen and the water from fresh water (FW) pipeline are mixed in chelating agen preparation tank
Closing dilution, the chelating agen diluent after dilution starts also by delivery pump, fixed by chelating agen weighing pot
Measuring and supply chelating agen diluent to the mixing blender of flying dust, flying dust, cement and chelating agen are at biaxial rneader
Inside being sufficiently mixed, the heavy metal in flying dust is reacted with chelating agen, generates chelate thus stabilized, flies
Solidfied material transfer car(buggy) after ash mixing blender out stabilized is transported to appointed place landfill, completes
Whole stabilizing fly ashization processes.
The discharge treating system of a kind of waste incineration additive the most as claimed in claim 2, it is characterised in that described
Activated carbon storehouse and Sal Nitri ash silo storehouse in be provided with guided wave radar continuous material level meter, the real-time change of monitoring material position
Change so that all level signals all can facilitate operations staff to operate monitoring with teletransmission to central control room.
The discharge treating system of a kind of waste incineration additive the most as claimed in claim 2, it is characterised in that injection
Fan outlet pipeline is provided with pressure transducer, and monitoring lime injection system is run in real time, and according to pipe
The change of road pressure judges whether pipeline blocking occurs.
The discharge treating system of a kind of waste incineration additive the most as claimed in claim 2, it is characterised in that described
Activated carbon and slaked lime unload put in storage by being positioned at the electric block of activated carbon storehouse and Sal Nitri ash silo Cang Ding
And store.
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| CN201610364113.9A CN105968349A (en) | 2016-05-27 | 2016-05-27 | Chelating agent for waste incineration and application thereof |
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| CN201610364113.9A CN105968349A (en) | 2016-05-27 | 2016-05-27 | Chelating agent for waste incineration and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107900068A (en) * | 2017-10-31 | 2018-04-13 | 青岛理工大学 | One kind accelerates incinerating residue stabilization method |
| CN107998866A (en) * | 2018-01-18 | 2018-05-08 | 广州奥恺德电气科技有限公司 | A kind of lime slurry conveying device with pressure and method |
| WO2018133047A1 (en) * | 2017-01-20 | 2018-07-26 | 深圳市能源环保有限公司 | Injection chelating treatment method for waste incineration fly ash |
| CN108453115A (en) * | 2018-01-26 | 2018-08-28 | 无锡雪浪环境科技股份有限公司 | Stabilizing fly ash processing system and technique |
| CN109078443A (en) * | 2018-09-21 | 2018-12-25 | 宁夏瑞银有色金属科技有限公司 | A kind of exhaust treatment system and its application method for lead-acid accumulator |
| CN109092850A (en) * | 2018-07-26 | 2018-12-28 | 安徽安江环保科技有限公司 | A method of solidifying garbage flying ash using chelating agent |
| CN109173686A (en) * | 2018-09-25 | 2019-01-11 | 安徽海螺川崎节能设备制造有限公司 | A kind of flue gas of refuse burning processing system |
| CN111017566A (en) * | 2019-12-25 | 2020-04-17 | 深圳市能源环保有限公司 | Powder material conveying device for fly ash spraying chelation treatment |
| CN111013343A (en) * | 2019-12-17 | 2020-04-17 | 无锡市华星东方电力环保科技有限公司 | Waste incineration system |
| CN112594728A (en) * | 2020-12-07 | 2021-04-02 | 安徽欣创节能环保科技股份有限公司 | Domestic waste incineration fly ash classification treatment system |
| WO2021128106A1 (en) * | 2019-12-25 | 2021-07-01 | 深圳市能源环保有限公司 | Powder material conveying device for fly ash spraying and chelation treatment |
| CN114130785A (en) * | 2021-11-09 | 2022-03-04 | 深圳市能源环保有限公司 | Fly ash treatment method of garbage incinerator |
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| WO2018133047A1 (en) * | 2017-01-20 | 2018-07-26 | 深圳市能源环保有限公司 | Injection chelating treatment method for waste incineration fly ash |
| CN107900068A (en) * | 2017-10-31 | 2018-04-13 | 青岛理工大学 | One kind accelerates incinerating residue stabilization method |
| CN107998866A (en) * | 2018-01-18 | 2018-05-08 | 广州奥恺德电气科技有限公司 | A kind of lime slurry conveying device with pressure and method |
| CN108453115A (en) * | 2018-01-26 | 2018-08-28 | 无锡雪浪环境科技股份有限公司 | Stabilizing fly ash processing system and technique |
| CN109092850A (en) * | 2018-07-26 | 2018-12-28 | 安徽安江环保科技有限公司 | A method of solidifying garbage flying ash using chelating agent |
| CN109078443A (en) * | 2018-09-21 | 2018-12-25 | 宁夏瑞银有色金属科技有限公司 | A kind of exhaust treatment system and its application method for lead-acid accumulator |
| CN109173686A (en) * | 2018-09-25 | 2019-01-11 | 安徽海螺川崎节能设备制造有限公司 | A kind of flue gas of refuse burning processing system |
| CN111013343A (en) * | 2019-12-17 | 2020-04-17 | 无锡市华星东方电力环保科技有限公司 | Waste incineration system |
| CN111017566A (en) * | 2019-12-25 | 2020-04-17 | 深圳市能源环保有限公司 | Powder material conveying device for fly ash spraying chelation treatment |
| WO2021128106A1 (en) * | 2019-12-25 | 2021-07-01 | 深圳市能源环保有限公司 | Powder material conveying device for fly ash spraying and chelation treatment |
| CN112594728A (en) * | 2020-12-07 | 2021-04-02 | 安徽欣创节能环保科技股份有限公司 | Domestic waste incineration fly ash classification treatment system |
| CN114130785A (en) * | 2021-11-09 | 2022-03-04 | 深圳市能源环保有限公司 | Fly ash treatment method of garbage incinerator |
| CN114307480A (en) * | 2021-11-19 | 2022-04-12 | 桂林矿山机械有限公司 | Water mist dust removal device for calcium hydroxide production line and calcium hydroxide production line |
| CN114307480B (en) * | 2021-11-19 | 2023-04-14 | 桂林矿山机械有限公司 | Water mist dust removal device for calcium hydroxide production line and calcium hydroxide production line |
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