CN110482631A - Incineration leachate directly contacts the device and method thereof of evaporation process - Google Patents
Incineration leachate directly contacts the device and method thereof of evaporation process Download PDFInfo
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- CN110482631A CN110482631A CN201910911320.5A CN201910911320A CN110482631A CN 110482631 A CN110482631 A CN 110482631A CN 201910911320 A CN201910911320 A CN 201910911320A CN 110482631 A CN110482631 A CN 110482631A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The present invention proposes that a kind of incineration leachate directly contacts the device and method thereof of evaporation, which includes: the first evaporator, and the first evaporator is provided with first charging aperture, first discharge port and first row port；Second evaporator, the second evaporator are provided with second charging aperture, the second discharge gate and second exhaust port, and second charging aperture connects first discharge port；Third evaporator, third evaporator are provided with third feed inlet, third discharge gate and third exhaust outlet, and third feed inlet connects the second discharge gate；And air preheater, air preheater are provided with air inlet, air air-vent, smoke air inlet and flue gas air-vent, air air-vent is connect with the first evaporator and third evaporator, and flue gas air-vent is connect with the second evaporator.The heat in high temperature air and high-temperature flue gas that the present invention is generated using incineration plant is evaporated percolate, solves the problems, such as that submerged combustion evaporation is limited in the combustion gas source that incineration plant faces.
Description
Technical field
The present invention relates to the organic liquid waste processing technology field with high salt of environmental protection, in particular to a kind of incineration leachates
Directly contact the device and method thereof of evaporation process.
Background technique
China's msw water content is higher, and garbage burning factory is caused also to generate a large amount of landfill leachates.Incineration leachate
Processing has become an important topic of incineration plant management.
Contain a large amount of degradable and hardly degraded organic substances, ammonia nitrogen and inorganic salts etc., biological treatment in landfill leachate
It is current most important processing technique means, most easily biodegradable organics can be removed, and can be nitre by mineralized nitrogen
State nitrogen (can be removed further) in supplementary carbon source.But remaining hardly degraded organic substance and other pollutants can only generally pass through
Nanofiltration or the embrane methods such as reverse osmosis removal, membrane processing method is only a Physical entrapment process, and the film concentrate of generation is enriched greatly
Measure hardly degraded organic substance and salinity.Advanced oxidation processes can decompose and remove hardly degraded organic substance, but be difficult to remove containing polluted by nitrogen
Object, and the problems such as solving technology stability and higher processing cost is also needed in practical applications.Based on direct contact heat transfer original
The submerged combustion evaporation technology of reason has thoroughly evaded fouling problem, and two-period form submerged combustion evaporation technique is realized and evaporated
The removal of volatile organic matter in journey finally all gathers all organic and inorganic pollutants and salinity in solid residue,
It is widely used in the processing engineering of landfill leachate, especially film concentrate.
Chinese patent CN1278963C discloses a kind of evaporation burning of landfill percolate and is concentrated by evaporation at the two-stage
Reason method.The second stage of the technique is directed to the final concentration and evaporation product of percolate there are entrainment risk, influences to be discharged
Quality of steam.
Chinese patent CN106110695A discloses submerged combustion evaporation enrichment facility and the side of a kind of organic liquid waste with high salt
Method.Its to organic liquid waste with high salt carry out three-level evaporation, realize volatile contaminant control, moisture (steam) separation with purify, it is dense
The most high multiple effect of contracting degree.
But above-mentioned submerged combustion evaporation technique is required to using biogas as energy source, for considerable incineration plant
For, insufficient biogas supports submerged combustion evaporation technique, and is then related to fuel gas transmission and storage according to natural gas
The problem of.
Summary of the invention
To solve the problems, such as or alleviating at least one in above-mentioned technical problem, the present invention proposes that a kind of incineration leachate is straight
Contact the device and method thereof of evaporation process.
First aspect present invention provides a kind of equipment that incineration leachate directly contacts evaporation process, and the incineration plant is seeped
The equipment that filtrate directly contacts evaporation process includes:
A kind of equipment that incineration leachate directly contacts evaporation process, which is characterized in that the incineration leachate is straight
Contact evaporation process equipment include:
First evaporator, first evaporator are provided with first charging aperture, first discharge port and first row port；
Second evaporator, second evaporator is provided with second charging aperture, the second discharge gate and second exhaust port, described
Second charging aperture connects the first discharge port, for receiving liquid to be processed in first evaporator from first evaporator
The primary concentration liquid of middle evaporation and formation；
Third evaporator, the third evaporator is provided with third feed inlet, third discharge gate and third exhaust outlet, described
Third feed inlet connects second discharge gate, for receiving the primary concentration liquid described second from second evaporator
The secondary concentration liquid for evaporating and being formed in evaporator；And
Air preheater, the air preheater are provided with air inlet, air air-vent, smoke air inlet and flue gas
Air-vent, the air air-vent are connect with first evaporator and the third evaporator, for evaporating to described first
Tank and the third evaporator supply high temperature air, and the flue gas air-vent is connect with second evaporator, are used for described
Second evaporator supplies high-temperature flue gas.
Preferably, first evaporator is internally provided with the first distribution device, and the inside of second evaporator sets
Be equipped with the second distribution device, the third evaporator is internally provided with third distribution device, the air air-vent with it is described
First distribution device is connected with the third distribution device, and the flue gas air-vent is connect with second distribution device.
Preferably, the incineration leachate directly contacts the equipment of evaporation process for garbage disposal site and/or thermoelectricity
It is provided with incinerator in factory, garbage disposal site and/or steam power plant, high-temperature flue gas, the high-temperature flue gas are generated by the incinerator
It is passed through the smoke air inlet.
Preferably, the first row port connect the secondary air inlet of the incinerator with the third exhaust outlet, described
Second exhaust port connects the chimney of the incinerator.
Second aspect of the present invention provides a kind of method that incineration leachate directly contacts evaporation process, and the incineration plant is seeped
The method that filtrate directly contacts evaporation process is directly contacted using incineration leachate described in any one of above-mentioned technical proposal
The equipment of evaporation process.
Preferably, liquid to be processed is entered in first evaporator by the first charging aperture, and the liquid to be processed exists
It is evaporated in first evaporator and carries out primary concentration, the primary concentration liquid that the primary concentration generates passes through the first row
Material mouth discharge, and be passed through in second evaporator by the second charging aperture, the primary concentration liquid is described second
It is evaporated in evaporator and carries out secondary concentration, the secondary concentration liquid that the secondary concentration generates passes through second discharge gate and arranges
Out, and by the third feed inlet it is passed through in the third evaporator, the secondary concentration liquid is in the third evaporator
Interior evaporation and carry out three-level concentration, the three-level concentrate and/or salt slurry that three-level concentration generates pass through the third discharge gate
Discharge.
Preferably, to the three-level boil-off gas of the primary concentration the first boil-off gas generated and three-level concentration generation
Body is passed through incinerator, carries out at burning while for providing combustion air for the incinerator to the steam containing pollutant
Reason, the second boil-off gas that the secondary concentration generates are passed through the chimney of the incinerator.
At least one effect in following beneficial effect can be obtained through the above technical solution:
1. can use the heat pair in incineration plant own high temperature air (being heated by air preheater) and high-temperature flue gas
Percolate is evaporated, and solves the problems, such as that submerged combustion evaporation is limited in the combustion gas source that incineration plant faces, and using high
Warm air and high-temperature flue gas and percolate carry out direct contact heat transfer, keep operational management simpler.
2. the present invention can use the high temperature air of the air preheater heating of incineration plant as first order evaporation and third
The heat source of grade evaporation, steam that this double flash evaporation generates respectively due to pollutant volatilization and the reason of entrainment contain it is more
Pollutant, therefore the steam that this double flash evaporation generates needs to return incinerator burning disposal, air therein then can be used as burning
Combustion air.
3. the present invention can use the heat source that the high-temperature flue gas after air preheater is evaporated as the second level, to being deposited in flue gas
Remaining heat is used, while effectively avoiding secondary pollution, realizes the unification of two pollution sources in garbage disposal site
Processing, has achieved the effect that " treatment of wastes with processes of wastes against one another ", reduces the use of fuel gas, reduces the cost of percolate processing.
Detailed description of the invention
Fig. 1 is the knot for the equipment that incineration leachate according to embodiment of the present invention directly contacts evaporation process
Structure schematic diagram.
Description of symbols
1 first evaporator, 11 12 first distribution device of first charging aperture, 13 first discharge port, 14 first row port
2 second evaporator, 21 second charging aperture, 22 second 23 second discharge gate of distribution device, 24 second exhaust port
3 third evaporator, 31 third feed inlet, 32 third distribution device, 33 third discharge gate, 34 third exhaust outlet
4 air preheater, 41 air inlet, 42 air air-vent, 43 smoke air inlet, 44 flue gas air-vent.
Specific embodiment
In order to clearly illustrate the above objects, features and advantages of the present invention, the part in conjunction with attached drawing specifically
Bright a specific embodiment of the invention.Other than each embodiment described in this part, the present invention can also pass through it
His different mode is implemented, without departing from the spirit of the invention, those skilled in the art can be correspondingly improved,
Deformation and replacement, therefore the present invention is not limited by specific embodiment disclosed in the part.Protection scope of the present invention Ying Yiquan
Subject to benefit requires.
As shown in Figure 1, the present invention proposes a kind of equipment that incineration leachate directly contacts evaporation process comprising first
Evaporator 1, the second evaporator 2, third evaporator 3 and air preheater 4.
First evaporator 1 is provided with first charging aperture 11, first charging aperture 11 can be located at the first evaporator 1 side wall or
At top, for conveying percolate to be processed into the first evaporator 1, (or haline water, haline water refer to first charging aperture 11
The waste water of total saliferous mass fraction at least 1%).First evaporator 1 is internally provided with the first distribution device 12, the first gas distribution dress
Setting 12 can tear gas at micro-bubble.The bottom of first evaporator 1 is provided with first discharge port 13, the first evaporator 1
Top or top be provided with first row port 14.
The tank bottom of first evaporator 1 is preferably formed into the incline structures such as taper, tubaeform or slope shape, makes the diafiltration of concentration
Liquid can be discharged from the first discharge port 13 of 1 bottom of the first evaporator under the effect of gravity.First row port 14, which can be connected to, to be burnt
Furnace (not shown) is burnt, the gas such as volatilizable organic matter and vapor that evaporation generates in the first evaporator 1 is made to be passed through burning
Burning disposal in furnace.
Second evaporator 2 is provided with second charging aperture 21, second charging aperture 21 can be located at the second evaporator 2 side wall or
At top.Second charging aperture 21 connects first discharge port 13, and second charging aperture 21 is used to convey into the second evaporator 2 from first
The percolate for the concentration that discharge gate 13 is discharged.Second evaporator 2 is internally provided with the second distribution device 22, the second distribution device
22 can tear gas at micro-bubble.The bottom of second evaporator 2 is provided with the second discharge gate 23, the second evaporator 2
Top or top are provided with second exhaust port 24.
The tank bottom of second evaporator 2 is preferably formed into the incline structures such as taper, tubaeform or slope shape, makes the diafiltration of concentration
Liquid can be discharged from the second discharge gate 23 of 2 bottom of the second evaporator under the effect of gravity.Second exhaust port 24 can connect cold
Condenser is directly communicated to ambient atmosphere, and the vapor for evaporating generation in the second evaporator 2 is made to collect or discharge.
Third evaporator 3 is provided with third feed inlet 31, third feed inlet 31 can be located at third evaporator 3 side wall or
At top.Third feed inlet 31 connects the second discharge gate 23, and third feed inlet 31 is used to convey into third evaporator 3 from second
The percolate for the concentration that discharge gate 23 is discharged.Third evaporator 3 is internally provided with third distribution device 32, third distribution device
32 can tear gas at micro-bubble.The bottom of third evaporator 3 is provided with third discharge gate 33, third evaporator 3
Top or top are provided with third exhaust outlet 34.
The tank bottom of third evaporator 3 is preferably formed into the incline structures such as taper, tubaeform or slope shape, makes the diafiltration of concentration
Liquid and/or the salt slurry formed after being evaporated by percolate can 33 rows of third discharge gate in gravity from 3 bottom of third evaporator
Out.Third exhaust outlet 34 can be connected to incinerator (not shown), make to evaporate for example volatilizable organic of generation in third evaporator 3
The gases such as object and vapor are passed through burning disposal in incinerator.Third exhaust outlet 34 and first row port 14 may be coupled to and lead to
The same pipeline of incinerator.
Air preheater 4 is provided with air inlet 41, air air-vent 42, smoke air inlet 43, flue gas air-vent 44.
Air inlet 41 is communicated with air air-vent 42, and smoke air inlet 43 is communicated with flue gas air-vent 44.
The equipment that incineration leachate of the invention directly contacts evaporation process can be used for garbage disposal site and/or thermoelectricity
It is provided with incinerator in factory, garbage disposal site and/or steam power plant, high-temperature flue gas is generated by incinerator, the high-temperature flue gas can be with
It is passed through smoke air inlet 43.
The air air-vent 42 of air preheater 4 is connect with the first distribution device 12 and third distribution device 32, and flue gas draws
Air port 44 is connect with the second distribution device 22.First distribution device 12, the second distribution device 22, third distribution device 32 can
The high temperature air formed after 4 heat exchange of air preheater will be passed through and high-temperature flue gas is torn into micro-bubble.
First discharge port 13 connects second charging aperture 21, and the second discharge gate 23 connects third feed inlet 31, to make first
Evaporator 1, the second evaporator 2 are connected with third evaporator 3.Third discharge gate 33 be used for discharge be concentrated after percolate and/or
The salt slurry formed after being evaporated by percolate.
The course of work that incineration leachate directly contacts the equipment of evaporation process is described below.
The high-temperature flue gas and air that garbage disposal site and/or steam power plant discharge are subjected to heat exchange by air preheater 4,
Form high temperature air and high-temperature flue gas.Specifically, the high-temperature flue gas that incinerator generates during the burning process is passed through smoke air inlet
43, the air of room temperature is passed through air inlet 41 in atmosphere, is exchanged by air preheater 4 by heat, after air is heated
High temperature air is discharged by air air-vent 42, the high-temperature flue gas after heating air still has very high temperature, such as 180
℃.After the exchange of the heat of air preheater 4, the temperature for the high temperature air being discharged by air air-vent 42 is not less than for example
200℃.The high temperature air that air air-vent 42 is discharged is passed through in the first evaporator 1 and third evaporator 3,44 row of flue gas air-vent
High-temperature flue gas out is passed through the second evaporator.
It is appreciated that heating using the heat in high-temperature flue gas to air, submergence combustion in the prior art is eliminated
Used submerged burner when evaporation is burnt, construction investment has not only been saved, but also reduces peace brought by submerged burner
Full blast danger, also simplifies the Combustion System process in evaporation, keeps operational management more convenient.
In the prior art when the landfill gas source as fuel gas is restricted, need to be replaced by merchantable fuel(s)
In generation, causes operating cost high and consumes mass energy.And the high-temperature flue gas that the present invention utilizes waste incineration to generate, to high temperature cigarette
Gas is used, and realizes being uniformly processed for two pollution sources (high-temperature flue gas and the percolate) in garbage disposal site, reaches
The effect of " treatment of wastes with processes of wastes against one another " reduces the use of fuel gas, reduces the cost of percolate processing.It is appreciated that rubbish is burnt
The high-temperature flue gas for burning generation can be passed through smoke processing system after cooling and be handled.
Percolate is passed through in the first evaporator 1 by pipeline from first charging aperture 11, the high temperature that air air-vent 42 is discharged
Air leads to the first distribution device 12.Percolate is contacted with the high temperature micro-bubble that the first distribution device 12 exports, and makes percolate
Primary concentration, the volatile pollutant volatilization in percolate generate level-one boil-off gas.The cycles of concentration of primary concentration be 1 to
2 times.Cycles of concentration refers to the ratio of diafiltration liquid measure to be evaporated and remaining concentration liquid measure.It is appreciated that can be evaporated by control
The time of concentration process controls cycles of concentration, and the time of concentration process is long, and for cycles of concentration with regard to big, the time of concentration process is short,
Cycles of concentration is with regard to small.Level-one boil-off gas mainly includes the small molecules object such as volatile organic matter, vapor, carbon dioxide and nitrogen
Matter.Level-one boil-off gas is discharged from first row port 14 and is passed through the secondary air inlet of incinerator and is incinerated, and to burn
It burns furnace and combustion-supporting gas is provided, the temperature of the level-one boil-off gas of discharge is lower than 100 DEG C, for example, about 90 DEG C.
It is logical by first discharge port 13 and second charging aperture 21 after percolate completes primary concentration in the first evaporator 1
Enter the second evaporator 2, the primary concentration percolate temperature flowed out by first discharge port 13 can be such as 85 DEG C to 95 DEG C.
The high-temperature flue gas that flue gas air-vent 44 is discharged leads to the second distribution device 22, primary concentration percolate and the second gas distribution
The high temperature micro-bubble contact that device 22 exports makes primary concentration percolate carry out secondary concentration, the volatilization of primary concentration percolate
Generate dual evaporation gas.The cycles of concentration of secondary concentration is 5 to 6 times.Large quantity of moisture in primary concentration percolate, which evaporates, to be produced
Raw dual evaporation gas, dual evaporation gas mainly includes vapor.Dual evaporation gas can be with from the discharge of second exhaust port 24
Lead to the chimney of incinerator, the temperature of the dual evaporation gas of discharge is lower than 100 DEG C, for example, about 90 DEG C.
Primary concentration percolate is completed second in the second evaporator 2 after being concentrated by evaporation, and 23 He of the second discharge gate is passed through
Third feed inlet 31 is passed through third evaporator 3, and the secondary concentration percolate temperature flowed out by the second discharge gate 23 can be for for example
85 DEG C to 95 DEG C.
The high temperature air that air air-vent 42 is discharged leads to third distribution device 32, secondary concentration percolate and third gas distribution
The high temperature micro-bubble contact that device 32 exports makes secondary concentration percolate carry out three-level concentration, the volatilization of secondary concentration percolate
Generate three-level boil-off gas.The cycles of concentration of three-level concentration is 10 times or more, even up to crystallization degree.Three-level is concentrated due to dense
It contracts strong, therefore makes to contain part macromolecular substances in boil-off gas due to entrainment.Three-level boil-off gas
Body is discharged from third exhaust outlet 34 and is passed through the secondary air inlet of incinerator and is incinerated, and provides combustion-supporting gas for incinerator
The temperature of body, the three-level boil-off gas of discharge is lower than 100 DEG C, for example, about 90 DEG C.
After secondary concentration percolate completes third time evaporation and concentration in third evaporator 3, pass through 33 row of third discharge gate
Third evaporator 3 out, the three-level concentrated leachate temperature being discharged by third discharge gate 33 can be such as 85 DEG C to 95 DEG C.
As described above, in the present invention, the cycles of concentration of the primary concentration carried out in the first evaporator 1 is less than second
The cycles of concentration of the cycles of concentration of the secondary concentration carried out in evaporator 2, the secondary concentration carried out in the second evaporator 2 is less than
The cycles of concentration of the three-level concentration carried out in third evaporator 3.
Although it should be noted that the two-period form evaporator of the prior art by stripping and burns in first segment evaporator
Realize the control and removal of volatile contaminant.But cycles of concentration is improved when the second level is evaporated, therefore two-period form is evaporated
There is entrainment in the gas that device discharges in second stage, leading to discharge gas, there are risk of environmental pollution.Especially
Ground, under the organic matter and the higher situation of ammonia-nitrogen content in the stoste of processing, the problem of entrainment, is more prominent.Due to this
The concentration rate of primary concentration in invention is lower, is mainly volatile pollutant in level-one boil-off gas.Due to the present invention
In three-level concentration concentration rate it is higher, concentrate can be made to enter crystallization stage, contain mist in three-level boil-off gas.Two
The cycles of concentration of grade concentration is moderate, and the main component of dual evaporation gas is vapor.Level-one boil-off gas containing pollutant
It is passed through incinerator with three-level boil-off gas to destroy by fire, to realize the efficient control of pollutant in evaporation process.
Claims (7)
1. the equipment that a kind of incineration leachate directly contacts evaporation process, which is characterized in that the incineration leachate is direct
Contact evaporation process equipment include:
First evaporator, first evaporator are provided with first charging aperture, first discharge port and first row port；
Second evaporator, second evaporator are provided with second charging aperture, the second discharge gate and second exhaust port, and described second
Feed inlet connects the first discharge port, steams in first evaporator for receiving liquid to be processed from first evaporator
The primary concentration liquid sent out and formed；
Third evaporator, the third evaporator are provided with third feed inlet, third discharge gate and third exhaust outlet, the third
Feed inlet connects second discharge gate, for receiving the primary concentration liquid in second evaporation from second evaporator
The secondary concentration liquid for evaporating and being formed in tank；And
Air preheater, the air preheater are provided with air inlet, air air-vent, smoke air inlet and flue gas air inducing
Mouthful, the air air-vent connect with first evaporator and the third evaporator, be used for first evaporator with
The third evaporator supplies high temperature air, and the flue gas air-vent is connect with second evaporator, is used for described second
Evaporator supplies high-temperature flue gas.
2. the equipment that incineration leachate according to claim 1 directly contacts evaporation process, which is characterized in that described
One evaporator is internally provided with the first distribution device, and second evaporator is internally provided with the second distribution device, described
Third evaporator is internally provided with third distribution device, the air air-vent and first distribution device and the third
Distribution device connection, the flue gas air-vent are connect with second distribution device.
3. the equipment that incineration leachate according to claim 1 directly contacts evaporation process, which is characterized in that described to burn
It burns the equipment that factory's percolate directly contacts evaporation process and is used for garbage disposal site and/or steam power plant, garbage disposal site and/or thermoelectricity
It is provided with incinerator in factory, high-temperature flue gas is generated by the incinerator, the high-temperature flue gas is passed through the smoke air inlet.
4. the equipment that incineration leachate according to claim 3 directly contacts evaporation process, which is characterized in that described
One exhaust outlet connect the secondary air inlet of the incinerator with the third exhaust outlet, and the second exhaust port connects the burning
The chimney of furnace.
5. a kind of method that incineration leachate directly contacts evaporation process, which is characterized in that the incineration leachate is direct
The method of contact evaporation process directly contacts evaporation process using incineration leachate described in any one of any one of claims 1 to 44
Equipment.
6. the method that incineration leachate according to claim 5 directly contacts evaporation process, which is characterized in that be processed
Liquid by the first charging aperture enter first evaporator in, the liquid to be processed evaporated in first evaporator and
Primary concentration is carried out, the primary concentration liquid that the primary concentration generates is discharged by the first discharge port, and by described
Second charging aperture is passed through in second evaporator, and the primary concentration liquid evaporates in second evaporator and carries out second level
Concentration, the secondary concentration liquid that the secondary concentration generates is discharged by second discharge gate, and is fed by the third
Mouth is passed through in the third evaporator, and the secondary concentration liquid evaporates in the third evaporator and carries out three-level concentration, institute
The three-level concentrate and/or salt slurry for stating three-level concentration generation are discharged by the third discharge gate.
7. the method that incineration leachate according to claim 6 directly contacts evaporation process, which is characterized in that described
The three-level boil-off gas that the first boil-off gas and three-level concentration that primary concentration generates generate is passed through incinerator, is used for as institute
State and burning disposal carried out to the steam containing pollutant while incinerator provides combustion air, the secondary concentration generate the
Two boil-off gas are passed through the chimney of the incinerator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910911320.5A CN110482631A (en) | 2019-09-25 | 2019-09-25 | Incineration leachate directly contacts the device and method thereof of evaporation process |
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| CN201910911320.5A CN110482631A (en) | 2019-09-25 | 2019-09-25 | Incineration leachate directly contacts the device and method thereof of evaporation process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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