CN209026830U - A kind of waste total system - Google Patents
A kind of waste total system Download PDFInfo
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- CN209026830U CN209026830U CN201821568755.1U CN201821568755U CN209026830U CN 209026830 U CN209026830 U CN 209026830U CN 201821568755 U CN201821568755 U CN 201821568755U CN 209026830 U CN209026830 U CN 209026830U
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- flue gas
- combustion furnace
- cyclone separator
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Abstract
The utility model discloses a kind of waste total systems, including rotary kiln, cyclone separator, gasification burner and exhaust treatment system；Rotary kiln and gasification burner are connected to cyclone separator respectively；Exhaust treatment system includes the waste gas combustion furnace being sequentially communicated, dust pelletizing system, absorption tower, elution Tower System and mist water separator；Cyclone separator is connected to waste gas combustion furnace.The utility model method can effectively be handled trade waste, it is made to meet discharge standard, and the silica in capable of recycling the waste.
Description
Technical field
The utility model belongs to Waste Disposal Technology field, and in particular to a kind of waste total system.
Background technique
Hazardous waste, which refers to, is included in National Hazard waste register, or is recognized according to the hazardous waste discrimination method of national regulation
The fixed waste with hazard property, so-called hazard property are primarily referred to as toxic, explosivity, inflammability, corrosivity, chemistry
Reactivity, infectiousness, radioactivity etc.；It therefore, include the above-mentioned above hazard profile of one or more, and with its distinctive property pair
The substance that environment generates pollution is just hazardous waste.
As society and expanding economy, industrial waste especially hazardous waste yield and type are increasing, have drawn
Play the very big concern of government and the public；The discharge everywhere and unreasonable disposition of hazardous waste, can endanger people's health, long-term product
Tired seriously to destroy ecological environment for the survival of mankind, extent of the destruction is much larger than house refuse；Currently, hazardous waste has become
For the protrusion public hazards of worldwide range, active development new technology, new process, new equipment carry out the centralized management to hazardous waste
It is disposed with science, reducing and eliminate contamination hazard has been the task of top priority.
Utility model content
For above-mentioned deficiency in the prior art, the utility model provides a kind of waste total system, can be effective
Ground handles the waste with hazard property, reaches corresponding discharge standard.
To achieve the above object, the technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of waste total system, including rotary kiln, cyclone separator, gasification burner and exhaust treatment system；
Rotary kiln and gasification burner are connected to cyclone separator respectively；
Exhaust treatment system includes the waste gas combustion furnace being sequentially communicated, dust pelletizing system, absorption tower, elution Tower System and mist
Separator；Cyclone separator is connected to waste gas combustion furnace.
Further, dust pelletizing system includes the fiber bag precipitator and wet dedusting tower being sequentially communicated；The wet dust removal
Two heat exchangers engaged therewith are provided at tower.
Further, it is additionally provided with the waste heat boiler being connected between waste gas combustion furnace and fiber bag precipitator and half dry type is anti-
Answer tower.
Further, absorption tower is three-level pickling absorption tower, and is provided with three heat exchangers engaged therewith.
Further, elution Tower System includes the water scrubber and caustic wash tower being sequentially communicated.
The method that waste is handled using above system, comprising the following steps:
(1) waste residue is delivered in rotary kiln, rotary kiln is rotated with the revolving speed of 1~3r/min, in 800~850 DEG C of item
It burns under part, the flue gas of generation enters in waste gas combustion furnace；
(2) salt bearing liquid wastes are delivered in gasification burner, are vaporized in 450~700 DEG C, then gas phase enters waste gas combustion furnace
In；
(3) by exhaust gas and not, salt bearing liquid wastes are passed directly into waste gas combustion furnace, with gained in step (1) and step (2)
Product mixing, then burns under conditions of 1100~1200 DEG C, -100Pa~100Pa, and the flue gas generated after burning is passed through remaining
In heat boiler, so that flue-gas temperature is reduced to 500~550 DEG C；
(4) flue gas obtained by step (3) is passed through in half dry type reaction tower, its temperature is made to be down to 200~230 in 1~3s
DEG C, it is then successively passed through again into fiber bag precipitator and wet dedusting tower, the SiO contained in recovered flue gas2Particle, and make cigarette
Temperature degree is down to 50~70 DEG C；
(5) flue gas obtained by step (4) is passed through three-level pickling absorption tower, collects the HCl in flue gas；Then again by flue gas after
It is continuous to be passed through into water scrubber and caustic wash tower, the impurity in flue gas is further removed, is discharged after being handled finally by mist water separator.
Further, waste is the waste of generation during organosilicon reaction.
Further, the revolving speed of rotary kiln is 2r/min in step (1), and temperature is 800 DEG C, and pressure is -64Pa.
Further, the flue gas temperature-fall period in half dry type reaction tower again in step (4) are as follows:
Water source is conveyed into half dry type reaction tower by the two-fluid spray nozzle at the top of half dry type reaction tower, and makes water source mist
To change, the lye droplet being atomized is acted on by upward hot fume, the high-density region that a droplet suspends is formed near the nozzle,
Temperature is cooled to rapidly 200 DEG C or so in 1s when flue gas passes through this region.
Further, the cleaning solution in step (5) in caustic wash tower is NaOH solution and NaSO3Solution is 1 according to volume ratio:
The mixed liquor that 1 ratio mixes.
The utility model has the following beneficial effects:
1, the flue gas that waste gas combustion furnace generates after burning enters in waste heat boiler, can effectively recycle in flue gas
Thermal energy, and the temperature of flue gas is reduced, it is convenient for subsequent processing.
2, the high-density region that lye droplet suspends is formed in half dry type reaction tower, temperature exists when flue gas passes through this region
200 DEG C or so are reduced to from 500 DEG C rapidly in 1s, to restrained effectively the regeneration of dioxin；It is had in flue gas simultaneously
The droplet that is also injected into of some Mars extinguish, the equipment to protect subsequent fiber bag precipitator and remaining non-refractory.
3, fiber bag precipitator can remove the heavy metal that partially dissociates in the fine solid particle and flue gas being detained in flue gas
Object is closed, heavy metal and dioxins concentration in flue gas are reduced.
4, the HCl in flue gas is recycled by three-level pickling absorption tower, the acid solution recycled, a part as at
Product output, remaining can be delivered to again in three-level pickling absorption tower, to continue as the absorbing liquid in three-level pickling absorption tower
HCl recycling is carried out to subsequent flue gas.
5, it is handled by the system in the utility model, it is ensured that the waste generated in production process can safely, surely
Fixed burning, and HCl and SiO in recovered flue gas can be recycled2, meanwhile, the content of the impurity such as dioxin in flue gas can be reduced, is made
Flue gas reaches discharge standard.
Detailed description of the invention
Fig. 1 is the functional block diagram of this system.
Wherein, 1, rotary kiln；2, gasification burner；3, waste gas combustion furnace；4, waste heat boiler；5, half dry type reaction tower；6, cloth bag
Formula deduster；7, wet dedusting tower；8, heat exchanger；9, absorption tower；10, water scrubber；11, caustic wash tower；12, mist water separator；13,
Cyclone separator.
Specific embodiment
Specific embodiment of the present utility model is described below, in order to facilitate understanding by those skilled in the art
The utility model, it should be apparent that the utility model is not limited to the range of specific embodiment, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the utility model spirit and scope in,
These variations are it will be apparent that all are created using the utility model of the utility model design in the column of protection.
Embodiment 1
As shown in Figure 1, the waste total system, including rotary kiln 1, gasification burner 2, cyclone separator 13 and useless
Gas processing system；Wherein, rotary kiln 1 and gasification burner 2 are connected to cyclone separator 13 respectively, cyclone separator 13 and exhaust-gas treatment
System connectivity.
The waste total system is additionally provided with the waste material collocation area cooperated with rotary kiln 1, and physical property is different
Waste material is premixed, collocation charging.
As shown in Figure 1, the exhaust treatment system includes that the waste gas combustion furnace 3, waste heat boiler 4, half dry type that are sequentially communicated are anti-
Answer tower 5, fiber bag precipitator 6, wet dedusting tower 7, absorption tower 9, water scrubber 10 and caustic wash tower 11；Wherein, waste gas combustion furnace 3
It is connected to cyclone separator 13.
Also, rotary kiln 1, gasification burner 2, cyclone separator 13, waste gas combustion furnace 3, waste heat boiler 4, half dry type reaction tower 5
And 6 bottom of fiber bag precipitator, it is connected to the silica collector for receiving silica.
As shown in Figure 1, being respectively arranged with heat exchanger 8 engaged therewith at wet dedusting tower 7 and absorption tower 9, wherein wet
Two heat exchangers 8 are provided at formula gas wash tower 7, a normal use, one spare；Three heat exchangers are provided at absorption tower 9
8, also, the absorption tower 9 is three-level pickling absorption tower.
As shown in Figure 1, mist water separator 12 is also communicated at caustic wash tower 11, for treated through caustic wash tower 11
Flue gas carries out water mist separation, then the air-introduced machine guidance discharge through being connected to mist water separator 12 again.
Embodiment 2
The method that waste is handled using system described in embodiment 1, comprising the following steps:
(1) after waste residue being packaged, transport to feed zone, and waste material collocation area is provided at feed zone, not by physical property
Same waste material is premixed, collocation charging；The waste material matched is delivered to incineration area, and solid waste is promoted to by bucket elevator
Hopper, waste material enter feed chute, are sent into rotary kiln by hydraulic feeder；
(2) after waste residue enters rotary kiln, temperature be 800~850 DEG C, revolving speed be 1~3r/min (according to actual condition into
Row adjust, be more difficult to decompose speed demand it is lower), pressure be -90Pa in the state of, along rotary kiln tilt angle (generally
3 °~5 °) and direction of rotation slowly move, gradually by drying, pyrolysis and gasification, the flue gas of generation enter in waste gas combustion furnace into
Row is handled in next step.
According to burning 3T1E (temperature, time, vortex, coefficient of excess) principle, so that clinker fills in furnace body combustion chamber
Point oxidation, pyrolysis, burning, and furnace body with per minute several turns revolving speed rotation (be configured with frequency converter, can be according to the heat of waste residue
It is worth the revolving speed of variable frequency adjustment rotary kiln), it by moisture content height, kills in following waste residue automatic turning, on one side by heated drying, on one side
By the revolution of rotary kiln, make the broken dispersion of material, waste residue is decomposed in the back segment of stove；
Waste residue smoulder in rotary kiln, using the rotation of rotary kiln and the gradient of kiln body itself, waste residue fires on one side
It burns and enters kiln tail portion on one side, finally fall into hydrolock dragveyer, export lime-ash through conveyer；And the flue gas generated is burned useless
It is further burned in gas incinerator, temperature increases to 1100~1200 DEG C under auxiliary fuel, keeps burning more complete, reaches nothing
Cigarette, effect odorless, without secondary pollution, also, the flue gas entered in waste gas combustion furnace is needed in its burning indoor residence time
Greater than 2 seconds, so that the micro-content organism and dioxin in flue gas are sufficiently decomposed, decomposition efficiency was more than 99.99%, it is ensured that combustion
It burns down complete.
(3) after the pressurized pump pressurization of salt bearing liquid wastes, gasification burner is sent by waste water spray gun；Furnace temperature control is vaporized in 450-
Between 700 DEG C；Waste liquid evaporates in gasification burner, vaporizes vapor of the formation containing particulate matter, and then high-temperature cyclone dust extractor will
Particulate matter therein is removed, waste gas combustion furnace is entered back into and carries out high temperature incineration oxidation processes, temperature is 800~850 DEG C；And it is precipitated
Salt mainly deposit to vaporization furnace bottom with Granular forms；The bottom of gasification burner is provided with a set of water cooling scraper slagging machine；
Its salt slag deposited after the cooling of water cooling scraper slagging machine by being discharged；Also, booster burners are provided on gasification burner；With
To control the fire box temperature in gasification burner.
(4) exhaust gas that is come out from factory technics device and salt bearing liquid wastes can be fed directly in waste gas combustion furnace；It is free of
Bisulfate waste liquor is first transported to the waste liquid tank on waste gas combustion furnace, by booster pump be delivered to the waste liquid burner in waste gas combustion furnace into
Row atomization is burned；And the natural gas how much measured or diesel oil are required supplementation with according to theoretical calculation exhaust gas liquid and can be only achieved and stablize burning
Condition.
Natural gas is entering hearth combustion by burner into fuel gas pipeline behind battery limit (BL), and fuel is mainly carrying out baker, rising
It is used when mild heat preservation operation；After flue gas puts into normal table burning, natural gas or diesel oil stopping are come into operation, chloromethanes is utilized
Tail gas independently burns, and provides stable heat source for the not strong flue gas of other flammabilities.
Salt bearing liquid wastes are not decomposed at high temperature, are aoxidized, and generate CO2、H2O、HCl、SiO2Deng also a large amount of in generation flue gas
N2The superfluous O with part2And the Cl of micro free state2(the Cl of these free states2After into caustic wash tower with alkali and
Na2SO3Solution absorbs it)
(5) vapor of waste residue generates flue gas, salt bearing liquid wastes generation is together with the product in step (4) in burned waste gas
The incineration temperature of burning in furnace, waste gas combustion furnace is controlled at 1100 DEG C~1200 DEG C or so.
(6) high-temperature flue gas come out in incinerator, first by waste heat boiler thermal energy recycling most of in flue gas, thus
The saturated vapor for generating 1.0MpaG is incorporated to pipe network；After waste heat boiler, flue-gas temperature is also down to 500-550 DEG C by 1150 DEG C
Left and right.
And it is the chance for reducing dioxin and synthesizing again, it is necessary to reduce flue gas in 240~500 DEG C of residence time, need
Flue gas is set quickly to be cooled to 240 DEG C hereinafter, the measure " chilling " taken, detailed process are as follows:
Flue gas after cooling enters half dry type reaction tower；Wherein, force (forcing) pump supplies clear water as needed, reacted top of tower
Two-fluid spray nozzle is sent into reaction tower, and aqueous solution is atomized into subtle droplet by two-fluid spray nozzle, and the droplet being atomized is by upward
Hot fume effect forms the high-density region that a droplet suspends near the nozzle, and when flue gas passes through this region, temperature is in 1s
200 DEG C or so are reduced to from 500 DEG C rapidly, to restrained effectively the regeneration of dioxin；Some fire in flue gas simultaneously
The water mist that star is injected into extinguishes, and protects subsequent cloth bag not to be burned, the flying dust of generation is collected into flying dust working area of temporary library etc.
Wait outward transport processing.
(7) flue gas subsequently enters fiber bag precipitator, is partially swum with removing in the fine solid particle and flue gas being detained in flue gas
From heavy metal compound；The active carbon being blown in the pipeline weight (as needed) for entering fiber bag precipitator, adsorbing in flue gas
Metal and dioxin, dust and active carbon powder under intercepting through cloth bag are discharged outside bag filter with star-shaped dust-discharging valve.
(8) then pass through pipeline by the purified flue gas of fiber bag precipitator and enter wet dedusting tower, in wet type tower dedusting
In tower, flue gas is directly in contact with the circulation concentrated hydrochloric acid of atomisation, and the moisture and HCl in hydrochloric acid are by thermal evaporation, heat absorption, simultaneously
Heat transmitting of the hydrochloric acid solution between flue gas itself is recycled, also reduces rapidly the temperature of flue gas.
By wet dedusting tower, flue-gas temperature is reduced to 70 DEG C or so from 200 DEG C；Gas wash tower be furnished with two heat exchangers, one
Platform works normally, and one spare, and the heat in circulation fluid is then taken away by heat exchanger heat exchange.
In wet dedusting tower, flue gas goes in the same direction with cyclic absorption hydrochloric acid solution, at this point, the HCl gas in flue gas will not
The water in hydrochloric acid for being dissolved in hydrochloric acid solution, and recycling, which can evaporate, to be become vapor and enters hydrochloric acid absorption tower；To being carried in flue gas
SiO2Carry out hydraulic dust-removing.With the operation of incinerator, solid content is gradually increased in circulation fluid, in order to avoid circulation fluid at
For gel, circulation fluid periodically should be drained into neutralization pond.Wet dedusting tower circulation fluid supplement absorption tower under tower concentrated hydrochloric acid, allow its not
It absorbs or absorbs HCl gas in flue gas less, only wash away entrained with dust in flue gas.
(9) flue gas after dedusting enters pickling absorption tower, is substantially free of SiO in flue gas at this time2Particle, therefore can be with
The hydrochloric acid of relative clean is obtained in pickling absorption tower.Pickling absorption tower is three-level pickling absorption tower, and flue gas and circulation acid solution are inverse
Xiang Erhang divides upper, middle and lower three-level to absorb.At this point, the HCl gas in flue gas is dissolved in acid solution, water vapour is condensed into water.
Three-level pickling absorption tower is furnished with three heat exchangers (upper, middle and lower respectively matches one), due to the dissolution of HCl gas and water vapour
Condensation is all exothermic reaction, and the heat that they are released is taken away by the heat exchanger on circulating absorption solution pipeline.Also, by three-level pickling
The hydrochloric acid that absorb the bottom of the tower comes out, as finished acid, a part are exported as finished product, acid solution needed for can supplementing water scrubber, or
Acid solution needed for other devices；Rest part turns again to three-level pickling absorption tower, to supplement the circulation acid solution in it.
(10) flue gas come out from three-level pickling absorption tower, HCl content therein has substantially reduced, subsequently into washing
Tower further decreases HCl content in flue gas.The water that water scrubber comes out can be recycled in tower reactor, while water scrubber tower reactor
Also it can be three-level pickling absorption tower moisturizing, absorb recycling HCl to greatest extent, reduce water usage.
(11) flue gas subsequently enters neutralization scrubbing tower, i.e. caustic wash tower, and NaOH and NaSO is configured in caustic wash tower3It is mixed
Solution is closed as cleaning solution, final carrying out washing treatment is efficiently carried out to flue gas by the cleaning solution in caustic wash tower, in flue gas
The few HCl and free state of remnants Cl2It neutralizes, becomes salt water discharge, flue gas emission is made to be up to state standards.
When the cleaning solution in caustic wash tower tower reactor storage tank becomes to approach neutral salt water after wash cycle after a period of time
When neutral brine is replaced.Acid pickle in neutral brine and wet dedusting tower enters neutralization pond, molten after neutralizing filters pressing
Liquid enters triple effect evaporation former pond and is evaporated desalination；It is recycled, caustic wash tower treated flue gas is separated by fog
After device removes water mist, Xiang great Qi is arranged through chimney by air-introduced machine, completes the processing of the Litter in entire production process.
Claims (5)
1. a kind of waste total system, which is characterized in that including rotary kiln, cyclone separator, gasification burner and exhaust gas
Processing system；The rotary kiln and gasification burner are connected to cyclone separator respectively；
The exhaust treatment system includes the waste gas combustion furnace being sequentially communicated, dust pelletizing system, absorption tower, elution Tower System and mist
Separator；The cyclone separator is connected to waste gas combustion furnace.
2. waste total system according to claim 1, which is characterized in that the dust pelletizing system includes successively connecting
Logical fiber bag precipitator and wet dedusting tower；Two heat exchangers engaged therewith are provided at the wet dedusting tower.
3. waste total system according to claim 2, which is characterized in that the waste gas combustion furnace and cloth-bag type
The waste heat boiler and half dry type reaction tower of connection are additionally provided between deduster.
4. waste total system according to claim 3, which is characterized in that the absorption tower is three-level pickling suction
Tower is received, and is provided with three heat exchangers engaged therewith.
5. waste total system according to claim 4, which is characterized in that the elution Tower System includes successively
The water scrubber and caustic wash tower of connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821568755.1U CN209026830U (en) | 2018-09-25 | 2018-09-25 | A kind of waste total system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821568755.1U CN209026830U (en) | 2018-09-25 | 2018-09-25 | A kind of waste total system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209026830U true CN209026830U (en) | 2019-06-25 |
Family
ID=66904153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821568755.1U Active CN209026830U (en) | 2018-09-25 | 2018-09-25 | A kind of waste total system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209026830U (en) |
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2018
- 2018-09-25 CN CN201821568755.1U patent/CN209026830U/en active Active
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