CN106746129A - Percolate evaporation and crystallization system - Google Patents
Percolate evaporation and crystallization system Download PDFInfo
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- CN106746129A CN106746129A CN201710044529.7A CN201710044529A CN106746129A CN 106746129 A CN106746129 A CN 106746129A CN 201710044529 A CN201710044529 A CN 201710044529A CN 106746129 A CN106746129 A CN 106746129A
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- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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Abstract
The invention discloses a kind of percolate evaporation and crystallization system, coagulation removes turbid subsystem, heat recovery subsystem, MVR evaporative subsystems and the deodorant subsystem of tail gas；Wherein, the coagulation goes turbid subsystem to be connected with the heat recovery subsystem and MVR evaporative subsystems successively；The clear liquid refluxing opening of the heat recovery subsystem time is connected to the coagulation and removes turbid subsystem；The concentrate refluxing opening of the MVR evaporative subsystems is returned and is connected to the heat recovery subsystem；The deodorant subsystem of tail gas is connected with the heat recovery subsystem.Concentrate backflow front end is produced in present system and mixes Posterior circle treatment with stoste；Coagulation goes turbid subsystem added amount of chemical few, has significant removal to act on to turbidity, SS；The evaporator of MVR evaporative subsystems, from snaking system, realizes the operation steady in a long-term of the evaporative subsystem using husky water circulation.
Description
Technical field
The present invention relates to landfill leachate treatment field, more particularly to a kind of percolate stoste evaporation and crystallization system.
Background technology
The Environmental capacity of percolate is always the thorny problem in domestic and international City refuse management system.Foreign study
Start-up time is more early, so far the existing experience of decades, develops various treatment technology and techniques.And the country is to garbage filter
It is later that the research of liquid treatment technology starts, and the technology of foreign countries is indiscriminately imitated mostly, therefore, seek a set of economical rationality, adapt to China
The technique of landfill leachate treatment is the pressing issues for promoting garbage treatment technique development.
What China's issue in 2008 was implemented《Household refuse landfill sites Environmental capacity standard》(GB16889-2008) to rubbish
Percolate treatment proposes higher standard, and increasingly serious problem of environmental pollution is to the pollution emission reduction of every profession and trade it is also proposed that higher will
Ask.The features such as water quality and quantity fluctuation that has by percolate is big, ammonia-nitrogen content is high, nutrient is unbalance so that treatment reaches
Mark difficulty is big, and operation cost is high.Garbage disposal manufacturer of the country, main to use " pretreatment+biochemistry+film " technique at present, comprising wadding
Multiple treatment process such as solidifying, anaerobism, aerobic, ultrafiltration (MBR), NF/RO, system complex, impacted factor is more, and because film is returned
Yield is limited, and the concentrate of the high pollution concentration more than 30% will be also produced in operation.
At present, the processing method of film concentrate mainly has recharge circular treatment and evaporation process, such as using at recharge circulation
Reason, then easily causing salinity can not in time discharge and accumulate, the activity of microorganism during influence biochemical treatment, and film is clear
Wash, replacement frequency can rise, and cause operating cost to increase, therefore be not a kind of permanently effective solution.Such as using evaporation
Treatment, uses " MVC+DI " evaporation profiles at present, main in evaporation due to containing high salt, organic matter high in percolate
There are problems that six is big, i.e., into there is no pretreatment system before vapo(u)rization system, cause preheater to block serious；Into after evaporator
As the evaporation and concentration of percolate, the crystal such as salt, calcium, magnesium in percolate are separated out, sticked on heat exchanger tube, evaporator knot is caused
It is dirty serious；Feeding temperature is big with Changes in weather difference variation, into after evaporation, causes system heat balance to fail；Evaporation starts cold
Material enters system, fully relies on electrothermal method startup, and the time is more long；Vapo(u)rization system produces concentrate and condensed water by DI treatment
Produced waste liquid can not be disposed effectively afterwards, cause secondary pollution.These problems have a strong impact on percolate evaporation process system
The operation steady in a long-term of system.
The content of the invention
Based on the problems of prior art, it is an object of the invention to provide a kind of percolate evaporative crystallization system
System, its added amount of chemical is few, do not produce highly-saline concentrate and evaporator can be from snaking.
The purpose of the present invention is achieved through the following technical solutions：
The embodiment of the present invention provides a kind of percolate evaporation and crystallization system, including：
Coagulation removes turbid subsystem, heat recovery subsystem, MVR evaporative subsystems and the deodorant subsystem of tail gas；Wherein,
The coagulation goes turbid subsystem to be connected with the heat recovery subsystem and MVR evaporative subsystems successively；
The clear liquid refluxing opening of the heat recovery subsystem time is connected to the coagulation and removes turbid subsystem；
The concentrate refluxing opening of the MVR evaporative subsystems is returned and is connected to the heat recovery subsystem；
The deodorant subsystem of tail gas is connected with the MVR evaporative subsystems.
As seen from the above technical solution provided by the invention, percolate evaporation knot provided in an embodiment of the present invention
Crystallographic system is united, and its advantage is as follows：
(1) turbid subsystem is removed by setting coagulation, can be effectively eliminated outstanding in percolate by adding a small amount of medicament
The organic matter of floating solid particle and part macromolecular, is that subsequent evaporation creates condition.
(2) turbid subsystem is removed due to being provided with coagulation so that present system produces high boiling macromolecular in concentrate
Organic matter and inorganic salts are in micro- hypersaturated state, by the cooler crystallizer of heat recovery subsystem make larger molecular organicses and
After inorganic salts are largely separated out, by the second centrifuge by its separation of solid and liquid, produce clear liquid and back flow back into coagulation and remove turbid subsystem, institute
Sewage sludge harmlessness treatment is produced, salinity high, COD high, the concentrate of difficult degradation are not produced.
(3) by setting MVR evaporative subsystems, will evaporate produce indirect steam, by vapour compression machine compress after
Condensed water is condensed into evaporator tubulation, the condensed water enters biochemical workshop section, rear discharge up to standard after lowered temperature reclamation heat.
(4) electric steam boiler-condensate water pot integrating device is set in MVR evaporative subsystems of the present invention, by electric steam boiler
United two into one with condensate water pot, the circulation fluid in MVR evaporative subsystem startup stages, electric steam boiler institute's producing steam and evaporator
Mixing heats up, not only efficiency high, save equipment investment, and effectively save the energy consumption of startup stage and when shortening startup
Between.
(5) evaporator of MVR evaporative subsystems of the present invention, with from snaking function, is effectively prolonged using husky water circulation mechanism
The cleaning frequency is grown.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will use needed for embodiment description
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is percolate evaporation and crystallization system schematic diagram provided in an embodiment of the present invention；
The corresponding part of each label is in figure：1- coagulations remove turbid subsystem；11- carrys out flow container；The agitating devices of 12- first；13-
PAC solution feedway；The agitating devices of 14- second；15-PAM supplies solution；The centrifuges of 16- first；17- sludge treatment equipments；
2- heat recovery subsystems；21- surge tanks；22- feed pumps；23- cooler crystallizers；24- discharging pumps；The centrifuges of 25- second；
26- filters；27- water water preheaters；28- air water preheaters；29- gas-liquid separators；291- condenses pond；292- biochemical treatments
Device；3-MVR evaporative subsystems；31- hot wells；32- evaporators；33- water circulating pumps；34- vapour compression machines；35- electricity steam coppers
Stove-condensate water pot integrating device；36- condensate pumps；The deodorant subsystem of 4- tail gas.
Specific embodiment
With reference to particular content of the invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made,
Belong to protection scope of the present invention.
As shown in figure 1, the embodiment of the present invention provides a kind of percolate evaporation and crystallization system, it is a kind of added amount of chemical
Less, do not produce highly-saline concentrate, with the New-type refuse vehicle percolate evaporation and crystallization system from snaking function evaporator, bag
Include：
Coagulation removes turbid subsystem, heat recovery subsystem, MVR evaporative subsystems and the deodorant subsystem of tail gas；Wherein,
Coagulation goes turbid subsystem to be connected with heat recovery subsystem and MVR evaporative subsystems successively；
The clear liquid refluxing opening of heat recovery subsystem time is connected to coagulation and removes turbid subsystem；
The concentrate refluxing opening of MVR evaporative subsystems is returned and is connected to heat recovery subsystem；
The deodorant subsystem of tail gas is connected with heat recovery subsystem.
Coagulation in said system goes the turbid subsystem to include：Come flow container, the first agitating device, PAC solution feedway,
Two agitating devices, PAM supplies solution, the first centrifuge and sludge treatment equipment；Wherein,
Carry out flow container and be respectively equipped with stoste entrance, clear liquid entrance and mixture export；
The mixture export for carrying out flow container is connected with the first agitating device, the second agitating device and the first centrifuge successively；
PAC solution feedway is connected on the first agitating device；
PAM supply solution is connected on the second agitating device；
First centrifuge is provided with the clear liquid drainage and sludge outlet for connecting heat recovery system respectively, sludge outlet and dirt
Mud processing unit is connected.
It is a kind of suitable for direct evaporation process percolate stoste that the coagulation removes turbid subsystem, and percolate stoste is being come
After flow container mixes with gravity flow and next saturated solution, it is molten with the PAC that PAC solution feedway is supplied to sequentially pass through the first agitating device
Liquid mixes, after the PAM solution that the second agitating device is supplied with PAM solution supplying devices mixes, into the first centrifuge point
From, producing clear liquid and enter heat recovery subsystem, the sludge isolated enters sludge treatment equipment.
Heat recovery subsystem in said system includes：Surge tank, feed pump, cooler crystallizer, discharging pump, second from
Scheming, filter, water water preheater, air water preheater, gas-liquid separator and condensation pond；Wherein,
Cooler crystallizer is provided with clear liquid entrance, magma outlet, concentrate entrance and purified liquor outlet；
Surge tank goes the clear liquid drainage of the first centrifuge of turbid subsystem to be connected with coagulation, and surge tank is through being provided with feed pump
Pipeline be connected with the clear liquid entrance of cooler crystallizer；
The magma outlet of cooler crystallizer is connected through being provided with the pipeline of discharging pump with the second centrifuge, and the second centrifuge sets
There is the clear liquid refluxing opening for being connected to the clear liquid entrance for carrying out flow container that coagulation removes turbid subsystem；
The concentrate entrance of cooler crystallizer is connected with the concentrate refluxing opening of MVR evaporative subsystems；
The purified liquor outlet of cooler crystallizer is connected with the gentle water preheater of water water preheater successively through filter；
Water water preheater is respectively equipped with condensing water inlet and condensation-water drain；
Air water preheater is respectively equipped with and do not coagulate gas entrance, do not coagulate gas outlet and purified liquor outlet；
The gas outlet of not coagulating of the condensation-water drain, air water preheater of water water preheater is connected with gas-liquid separator respectively；
The water of gas-liquid separator is mutually exported and is connected with condensation pond, gaseous phase outlet and the deodorant son of tail gas of the gas-liquid separator
System is connected；
The condensing water inlet of water water preheater, the purified liquor outlet point for not coagulating the gas gentle water preheater of entrance of air water preheater
It is not connected with MVR evaporative subsystems.
Above-mentioned heat recovery subsystem also includes：Biochemical treatment apparatus, the delivery port with condensation pond is connected.
In above-mentioned heat recovery subsystem, water water preheater is settable two, and a water water preheater is primary, another water
Water preheater is standby；Air water preheater is also provided with two, and each air water preheater is primary, and another air water preheater is standby.
The heat recovery subsystem, MVR evaporative subsystems is produced after concentrate is cooled down through cooler crystallizer and enters second
Centrifuge, the second centrifuge produce brilliant wadding it is mixed it is solid go turbid subsystem to produce into sludge treating system after sludge mixes with coagulation,
What the second centrifuge produced that saturated solution is back to that coagulation removes turbid subsystem carrys out flow container；After condensate liquid cools through water water preheater
Into gas-liquid separator, biochemical treatment apparatus, rear discharge up to standard are delivered to after lowering the temperature to fixed gas；Fixed gas is preheated through air water
Enter the deodorant subsystem of tail gas after lowering the temperature again into gas-liquid separator after device cooling；Because percolate stoste is by coagulation
Go it is turbid after clear liquid, have an elevated characteristic again by turbidity after heating, coagulation goes turbid subsystem to produce clear liquid to be tied through cooling
After brilliant device heats up, after separating flco through filter, sequentially pass through after the gentle water preheater of water water preheater is warmed up to design temperature
Into MVR evaporative subsystems.
MVR evaporative subsystems in said system include：Hot well, evaporator, vapour compression machine, water circulating pump, electric steam
Boiler-condensate water pot integrating device；Wherein,
Hot well is connected with the purified liquor outlet of air water preheater；
Sand is provided with hot well, the hot well is returned to be connected to evaporator and form husky water through being provided with the circulation liquid pipeline of water circulating pump and followed
Ring mechanism；
Hot well is connected to evaporator through being provided with the circulation liquid pipeline time of water circulating pump；
Hot well bottom is provided with the concentrate backflow of the concentrate entrance of the cooler crystallizer for being connected to heat recovery subsystem
Mouthful；
Evaporator is connected with vapour compression machine；
Evaporator is connected with electric steam boiler-condensate water pot integrating device, electric steam boiler-condensate water pot integrating device point
Steam (vapor) outlet and condensation-water drain are not provided with, and steam (vapor) outlet is returned and is connected to evaporator, and the condensed water pump of condensation-water drain is connected to heat
Amount reclaims the condensing water inlet of the water water preheater of subsystem；
Evaporator is provided with and do not coagulate gas outlet, and the solidifying gas outlet does not coagulate gas with the air water preheater of heat recovery subsystem
Entrance is connected.
Electric steam boiler-condensate water pot the integrating device of above-mentioned MVR evaporative subsystems is electric steam boiler and condensate water pot
The integrating device for uniting two into one.
The evaporator of above-mentioned MVR evaporative subsystems is horizontal spraying-film evaporator, and inside sets shower nozzle and heat exchanger tube, two
Secondary steam outlet sets wire mesh demister and knockout drum；The evaporating temperature of the evaporator is 85~105 DEG C, by control
Evaporator tube pressure energy realizes evaporation at constant temperature；The sprinkle density of the circulation fluid of the evaporator is 0.08~0.15kg/ (m.s).
The MVR evaporative subsystems, make the coagulation for being warming up to assigned temperature go turbid subsystem to produce clear liquid and alternately enter hot well
Top and bottom, top are sprayed to heat exchanger tube outer surface into after mixing with circulation fluid；Entering from bottom makes hot well bottom
Sand suspend, then mix with circulation fluid and be sprayed to heat exchanger tube surface, make it that heat pipe bundle surface is abraded in dropping process
Foulant.The circulation fluid on tubulation surface is exchanged heat with the high-temperature steam from vapour compression machine in tubulation, what evaporation was produced
Indirect steam compresses into vapour compression machine, and high-temperature steam is cooled to after condensed water enters electric steam boiler and enters back into water in tubulation
Water preheater, produces concentrate and enters cooler crystallizer from hot well.Wherein electric steam boiler and condensate water pot unite two into one, and are steaming
Hair system start-up phase, generation steam is directly entered evaporator, with circulation fluid Hybrid Heating, effectively shortens vapo(u)rization system startup
Time, and in evaporation stage due to coming the thermal balance failure that the reasons such as the very low, fouling of evaporator of liquid temperature degree are caused, electric steam copper
Stove can play a part of system thermal correction.
It is the fixed gas absorption tower of akaline liquid, fixed gas warp that the deodorant subsystem of tail gas in said system uses absorbing liquid
Air is entered after fixed gas absorption tower removal foul smell.Fixed gas absorption tower can use material filling type absorption tower, can use finite concentration
Alkali liquor absorption foul smell in noxious acidic gaseous.
In said system, MVR evaporative subsystems produce concentrate and mix with the percolate stoste before coagulating sedimentation, warp
After crossing coagulating sedimentation, into heat recovery subsystem, successively with MVR evaporative subsystems institute heat production concentrate, condensed water, fixed gas
Enter MVR evaporative subsystems after carrying out heat exchange, it is ensured that the energy-recuperation system of whole system, while not produced in guarantee system
Dope, makes the operation of system reliable and energy-saving.
The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing.
As shown in figure 1, a kind of percolate evaporation and crystallization system of the present embodiment, including coagulation goes turbid subsystem, heat
Amount reclaims subsystem, evaporative subsystem and the deodorant subsystem of tail gas；Wherein,
Coagulation goes the turbid subsystem to include：Come flow container, the first agitating device, PAC solution feedway, the second agitating device,
PAM solution supplying devices, the first centrifuge and sludge treatment equipment, percolate stoste is in the saturated solution for carrying out flow container with flow automatically and come
After mixing, sequentially pass through the PAC solution that the first agitating device supplies with PAC solution feedway and mix, the second agitating device with
After the PAM solution mixing of PAM solution supplying devices supply, separated into the first centrifuge, produce clear liquid and returned into heat
Subsystem is received, sludge enters sludge treatment equipment.
Heat recovery subsystem includes：Cooler crystallizer, the second centrifuge, filter, water water preheater (the using and the reserved),
The gentle water preheater of gas-liquid separator (the using and the reserved), system is produced and enters the second centrifugation after concentrate is cooled down through cooler crystallizer
Machine, the second centrifuge produces that brilliant wadding is mixed solid to go turbid subsystem to produce after sludge mixes into sludge treating system, second with coagulation
Centrifuge produces saturated solution and is back to and carrys out flow container；Condensate liquid enters gas-liquid separator after being cooled through water water preheater, to not
Solidifying gas delivers to biochemical treatment, rear discharge up to standard after being lowered the temperature；Fixed gas enters gas-liquid separator after lowering the temperature through air water preheater
Enter tail gas deodoration system after lowering the temperature again；After coagulation goes turbid subsystem to produce clear liquid through cooler crystallizer intensification, through filter
After separating flco, sequentially pass through the gentle water preheater of water water preheater and be warmed up to and enter MVR evaporative subsystems after design temperature.
MVR evaporative subsystems include：Evaporator, hot well, vapour compression machine and the integrated dress of electric steam boiler-condensate water pot
Put, the coagulation for being warming up to assigned temperature goes turbid subsystem to produce clear liquid to alternately enter hot well top and bottom, and top enters and follows
The heat exchanger tube outer surface in evaporator is sprayed to after the mixing of ring liquid；Entering from bottom makes the sand of hot well bottom suspend, then
Mix with circulation fluid and be sprayed to heat exchanger tube surface, the foulant for making it that heat pipe bundle surface is abraded in dropping process.Heat exchange
The circulation fluid on device tubulation surface is exchanged heat with the high-temperature steam from vapour compression machine in tubulation, evaporates the indirect steam for producing
Into vapour compression machine compression, in heat exchanger tube high-temperature steam be cooled to condensed water enter electric steam boiler electricity steam boiler-
The water water preheater of heat recovery subsystem is entered back into after condensate water pot integrating device, concentrate is produced and is returned into heat from hot well
Receive the cooler crystallizer of subsystem.In wherein electric steam boiler-condensate water pot integrating device, electric steam boiler is closed with condensate water pot
Two is one, and in MVR evaporative subsystem startup stages, generation steam is directly entered evaporator, with circulation fluid Hybrid Heating.
The deodorant subsystem of tail gas uses fixed gas absorption tower, and fixed gas enters big after fixed gas absorption tower removal foul smell
Gas.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (8)
1. a kind of percolate evaporation and crystallization system, it is characterised in that including：
Coagulation removes turbid subsystem, heat recovery subsystem, MVR evaporative subsystems and the deodorant subsystem of tail gas；Wherein,
The coagulation goes turbid subsystem to be connected with the heat recovery subsystem and MVR evaporative subsystems successively；
The clear liquid refluxing opening of the heat recovery subsystem time is connected to the coagulation and removes turbid subsystem；
The concentrate refluxing opening of the MVR evaporative subsystems is returned and is connected to the heat recovery subsystem；
The deodorant subsystem of tail gas is connected with the heat recovery subsystem.
2. percolate evaporation and crystallization system according to claim 1, it is characterised in that the coagulation removes turbid subsystem
Including：
Come flow container, the first agitating device, PAC solution feedway, the second agitating device, PAM supply solution, the first centrifuge and
Sludge treatment equipment；Wherein,
It is described come flow container be respectively equipped with stoste entrance, stillness of night entrance and mixture export；
It is described come flow container mixture export successively with first agitating device, the second agitating device and the first centrifuge connect
Connect；
The PAC solution feedway is connected on first agitating device；
The PAM supplies solution is connected on second agitating device；
First centrifuge is provided with the clear liquid drainage and sludge outlet for connecting the heat recovery system respectively, the sludge
Outlet is connected with the sludge treatment equipment.
3. percolate evaporation and crystallization system according to claim 1 and 2, it is characterised in that heat recovery
System includes：Surge tank, feed pump, cooler crystallizer, discharging pump, the second centrifuge, filter, water water preheater, air water are pre-
Hot device, gas-liquid separator and condensation pond；Wherein,
The cooler crystallizer is provided with clear liquid entrance, magma outlet, concentrate entrance and purified liquor outlet；
The surge tank goes the clear liquid drainage of the first centrifuge of turbid subsystem to be connected with the coagulation, and the surge tank is through setting
There is the pipeline of feed pump to be connected with the clear liquid entrance of the cooler crystallizer；
The magma outlet of the cooler crystallizer is connected through being provided with the pipeline of discharging pump with second centrifuge, and described second
Centrifuge is provided with the clear liquid refluxing opening for being connected to the clear liquid entrance for carrying out flow container that coagulation removes turbid subsystem；
The concentrate entrance of the cooler crystallizer is connected with the concentrate refluxing opening of the MVR evaporative subsystems；
The purified liquor outlet of the cooler crystallizer is connected with the gentle water preheater of water water preheater successively through filter；
The water water preheater is respectively equipped with condensing water inlet and condensation-water drain；
The air water preheater is respectively equipped with and do not coagulate gas entrance, do not coagulate gas outlet and purified liquor outlet；
The condensation-water drain of the water water preheater, the gas outlet of not coagulating of the air water preheater connect with gas-liquid separator respectively
Connect；
The water of the gas-liquid separator is mutually exported and is connected with the condensation pond, and gaseous phase outlet and the tail gas of the gas-liquid separator are removed
Smelly subsystem connection；
The condensing water inlet of the water water preheater, the air water preheater do not coagulate the clear of gas entrance and the air water preheater
Liquid outlet is connected with the MVR evaporative subsystems respectively.
4. percolate evaporation and crystallization system according to claim 3, it is characterised in that the heat recovery subsystem
Also include：Biochemical treatment apparatus, the delivery port with the condensation pond is connected.
5. percolate evaporation and crystallization system according to claim 1 and 2, it is characterised in that the MVR evaporates subsystem
System includes：Hot well, evaporator, vapour compression machine, water circulating pump, electric steam boiler-condensate water pot integrating device；Wherein,
The hot well is connected with the purified liquor outlet of the air water preheater；
The hot well upper end sets evaporator, and evaporator is connected with the hot well；
Sand is provided with the hot well, the hot well returns through being provided with the circulation liquid pipeline of water circulating pump and is connected to the evaporator and forms sand
Water circulation mechanism；
The hot well bottom is provided with the concentrate of the concentrate entrance of the cooler crystallizer for being connected to the heat recovery subsystem
Refluxing opening；
The evaporator is connected with the vapour compression machine；
The evaporator is connected with the electric steam boiler-condensate water pot integrating device, the electric steam boiler-condensate water pot collection
Steam (vapor) outlet and condensation-water drain are respectively equipped with into device, the steam (vapor) outlet is returned and is connected to the evaporator, and the condensed water goes out
The condensed water pump of mouth is connected to the condensing water inlet of the water water preheater of the heat recovery subsystem；
The evaporator is provided with and do not coagulate gas outlet, and this does not coagulate gas outlet with the air water preheater of the heat recovery subsystem not
Solidifying gas entrance connection.
6. percolate evaporation and crystallization system according to claim 5, it is characterised in that the electric steam boiler-cold
Solidifying water pot integrating device is the integrating device that electric steam boiler unites two into one with condensate water pot.
7. percolate evaporation and crystallization system according to claim 5, it is characterised in that the evaporator is horizontal spray
Falling film evaporator is drenched, inside sets shower nozzle and heat exchanger tube, and indirect steam exit sets wire mesh demister and knockout drum；
The evaporating temperature of the evaporator is 85~105 DEG C；
The sprinkle density of the circulation fluid of the evaporator is 0.08~0.15kg/ (m.s).
8. percolate evaporation and crystallization system according to claim 1 and 2, it is characterised in that the deodorant son of tail gas
It is the fixed gas absorption tower of akaline liquid that system uses absorbing liquid.
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| CN109502866A (en) * | 2018-08-27 | 2019-03-22 | 启迪桑德环境资源股份有限公司 | A kind of processing system and method making nanofiltration dope recycling |
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