CN207375782U - A kind of evaporation and concentration separator and Desulphurization for Coal-fired Power Plant wastewater zero discharge system - Google Patents
A kind of evaporation and concentration separator and Desulphurization for Coal-fired Power Plant wastewater zero discharge system Download PDFInfo
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- CN207375782U CN207375782U CN201721278368.XU CN201721278368U CN207375782U CN 207375782 U CN207375782 U CN 207375782U CN 201721278368 U CN201721278368 U CN 201721278368U CN 207375782 U CN207375782 U CN 207375782U
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Abstract
The utility model discloses a kind of evaporation and concentration separators and Desulphurization for Coal-fired Power Plant wastewater zero discharge system, and being concentrated by evaporation separator includes the evaporation channel and heat transfer path in parallel superposition above and below double W types；Liquid separation slot is respectively arranged at the top of W types in evaporation channel, W types bottom is respectively arranged with collecting tank；Along flue gas negative direction, delivery pump is provided between adjacent collecting tank and liquid separation slot；The collecting tank of the inlet of evaporation channel is pumped by concentrated water and connected with the feed inlet of whizzer, and the leakage fluid dram of whizzer is connected by back water pump with the collecting tank in the exit of evaporation channel, and the collecting tank in the exit of evaporation channel is communicated with waste water pump.The system includes the evaporation and concentration separator being arranged between boiler and desulfurizing tower, carries out circulating-heating evaporation and concentration to the desulfurization wastewater that desulfurizing tower is discharged by being concentrated by evaporation separator using the fume afterheat of boiler discharge, realizes the zero-emission of desulfurization wastewater.
Description
Technical field
The utility model belongs to technical field of waste water processing, and in particular to a kind of evaporation and concentration separator and coal-burning power plant
Desulfurization wastewater Zero discharging system is mainly used for Desulphurization for Coal-fired Power Plant wastewater treatment.
Background technology
The desulfurization wastewater of coal-burning power plant's Limestone-gypsum Wet Flue Gas Desulfurization Process system output is high rigidity, high chloride ion, high sulfuric acid
The high slat-containing wastewater of root, high heavy metal, the three traditional header wastewater processing technologies used can not meet increasingly strict at present
Environmental requirement.In order to maintain the stable operation of desulphurization system, rational chlorion concentrated water in Desulfurization tower slurry is controlled, is to ensure
One important parameter of the operation that system is stablized.The extensive rows such as coal yard sprinkling, grey field sprinkling, hydraulic discharged slag were similar in the past
Mode is put, is progressively prevented in terms of national policy, desulfurization wastewater zero-emission has become one that domestic coal-burning power plant generally faces
A problem.It is commonly for panoramic zero emission treatment of desulfured waste water, process route on domestic market：It is useless
Three links such as water pretreatment-wastewater minimisation processing-curing process, Wastewater Pretreatment mainly provide for wastewater minimisation processing
Qualified water condition, so that it is guaranteed that the stable operation of wastewater minimisation processing method.However, wastewater minimisation processing method is commonly film
The characteristics of concentration technology, various film concentration technologies is：It is high to the pre-processing requirements of desulfurization wastewater, to the desulfurization wastewater of amount with high salt
Adaptability is simultaneously pessimistic, and the FAQs such as fouling, blocking are frequently present of in operational process, reduces the service life of film, significantly
Improve its operating cost and maintenance cost.Wastewater minimisation processing method is commonly indirect evaporation or directly evaporation, indirect evaporation
Feature：It needs that tubular type heat-exchange system is installed in main air and gas system, improves air and gas system running resistance；Or application high standard is steamed
Vapour provides heat source to vapo(u)rization system, seriously affects the energy-saving run of unit.Directly evaporate feature：Using high-temperature flue gas, direct shadow
It rings boiler operating efficiency or uses waste heat flue gas, but there are certain risks to follow-up air and gas system safe and stable operation.
Utility model content
To solve problem above, the utility model provides a kind of evaporation and concentration separator and Desulphurization for Coal-fired Power Plant waste water zero
Exhaust system.The evaporation and concentration separator is utilized in the height above and below double W types in the evaporation channel and heat transfer path of parallel superposition
Warm flue gas carries out waste water heating evaporation concentration, which can utilize the flue gas of boiler discharge
Waste heat carries out the desulfurization wastewater that desulfurizing tower is discharged circulating-heating evaporation and concentration by evaporation concentration device, final realization waste water
Zero-emission；Its is simple in structure, and no high-energy equipment, running resistance is small, and stability is good, at low cost, and processing method is simple, can be real
The zero-emission of existing desulfurization wastewater, convenient for industrialized production and application.
In order to achieve the above object, the utility model is solved using following technical scheme.
(1) a kind of evaporation and concentration separator, for wastewater treatment, including evaporation channel, heat transfer path and centrifugation
Device, the evaporation channel are in parallel superposition above and below double W types with the heat transfer path, and the evaporation channel positioned at upside is with being located at
The heat transfer path of downside shares a W type heat conductive wall；Liquid separation slot, W are respectively arranged at the top of W types in the evaporation channel
Type bottom is respectively arranged with collecting tank, and the liquid separation slot provides waste water moisture film to be evaporated to W types heat conductive wall；Along flue gas negative side
To being provided with delivery pump between adjacent collecting tank and liquid separation slot；The inlet of the delivery pump by conveyance conduit with it is described
Collecting tank connects, and the liquid outlet of the delivery pump is connected by conveyance conduit with the liquid separation slot；The waste water of the delivery pump is defeated
Send direction opposite with flue gas flow direction；Collecting tank positioned at the inlet of the evaporation channel passes through concentrated water pump and the centrifugation
The feed inlet connection of device, the leakage fluid dram of the whizzer pass through back water pump and the collection positioned at the exit of the evaporation channel
Liquid bath connects, and the solid waste mouth of the whizzer is communicated with drier；Collection positioned at the exit of the evaporation channel
Liquid bath is also communicated with the waste water pump of transport wastewater.
Evaporation and concentration separator according to the present utility model, is passed through high temperature cigarette into evaporation channel and heat transfer path respectively
Gas creates the unsaturated flue gas environment of high temperature under a flow regime using the high-temperature flue gas in evaporation channel, and waste water is from steaming
The exit of passage is sent out to flow into evaporation channel with high-temperature flue gas opposite course；High-temperature flue gas in evaporation channel is to evaporation channel
Interior waste water carries out directly heating evaporation and concentration, and takes away the moisture in waste water；High-temperature flue gas in heat transfer path is passed by W types
Hot wall carries out indirectly heat evaporation and concentration to waste water.High-temperature flue gas and waste water in evaporation channel, salt content is got in waste water
Height then more needs higher thermal energy that can realize the evaporation and concentration of waste water；High-temperature flue gas in evaporation channel with subsequent flowing,
Its temperature continuously decreases, and relative humidity gradually increases, and salinity is more and more lower in the waste water of contact, " natural so as to persistently imitate
The meteorological principle of environment ", ideally, it can be achieved that high-temperature flue gas in evaporation channel close to water vapour saturation state.
Waste water can be delivered to the collecting tank in evaporation channel exit using waste water pump, the waste water in collecting tank is in delivery pump
Under the action of be delivered to liquid separation slot at the top of W types, the waste water in liquid separation slot passes through biography of the overflow type along the both sides of liquid separation slot
Hot wall flows into the collecting tank of both sides, while waste water moisture film is formed in the heat conductive wall of both sides；Wherein overflow direction and evaporation channel
The collecting tank that the consistent waste water outflow in interior flow of flue gas direction enters is this grade of collecting tank；Overflow direction and the cigarette in evaporation channel
The collecting tank that the opposite waste water outflow in flow of air direction enters is next stage collecting tank.Waste water in this grade of collecting tank is in delivery pump
Liquid separation slot is delivered under effect, realizes the circulating and evaporating concentration of waste water；Waste water in next stage collecting tank is in the effect of delivery pump
Under be delivered to liquid separation slot, realize waste water circulating and evaporating concentration；Until entrance outflow of the waste water through evaporation channel, it is dense to obtain saturation
Water.Saturation concentrated water is delivered to whizzer by concentrated water pump, carries out separation of solid and liquid, obtains separating liquid and solid waste, will separate
Liquid carries out circulating-heating evaporation and concentration by the collecting tank that back water pump is delivered to positioned at evaporation channel exit；Solid waste passes through
Drier is dried, and the final evaporation and concentration for realizing waste water achievees the purpose that wastewater zero discharge with separating.
In addition, evaporation and concentration separator provided by the utility model can have following additional technical feature：
As preference, the W types heat conductive wall is made of corrugated plating.
Evaporation and concentration separator according to the present utility model, the evaporation of waste water, liquid separation are further exacerbated by using corrugated plating
When waste water in slot flows into the collecting tank of its both sides by the heat conductive wall of overflow type along liquid separation slot both sides, it is made of corrugated plating
Heat conductive wall on can form waste water moisture film, the lines on corrugated plating increases the contact surface of high-temperature flue gas and waste water in evaporation channel
Product, while displacement distance of the waste water in heat conductive wall is extended, therefore, the heat conductive wall being made of corrugated plating can aggravate the steaming of waste water
Send out concentration process.In addition, corrugated plating has good sealing performance, make evaporation channel and the high-temperature flue gas in heat transfer path complete
It separates.Corrugated plating is polytetrafluoroethylene (PTFE) material, can be resistant to high salt corrosion, such as chloride ion corrosion, and it is good to have corrugated plating
Heat transfer property, convenient for the high-temperature flue gas in heat transfer path in evaporation channel waste water carry out heating evaporation concentration.
As preference, the leakage fluid dram of the whizzer is connected by back water pump with the inlet of the delivery pump.
The separating liquid is passed sequentially through delivery pump and is delivered to liquid separation by evaporation and concentration separator according to the present utility model
Slot, the separating liquid in liquid separation slot flow into the collecting tanks of both sides by the heat conductive wall of overflow type along the both sides of liquid separation slot, simultaneously
Moisture film is formed in the heat conductive wall of both sides；The wherein overflow direction waste water outflow consistent with the flow of flue gas direction in evaporation channel
The collecting tank entered is this grade of collecting tank；The collection that the overflow direction waste water outflow opposite with the flow of flue gas direction in evaporation channel enters
Liquid bath is next stage collecting tank.Separating liquid in this grade of collecting tank is delivered to liquid separation slot under the action of delivery pump, realizes separation
The circulating-heating of liquid is concentrated by evaporation.
As preference, the entrance of the entrance of the evaporation channel and the heat transfer path is both provided with baffle door.
Evaporation and concentration separator according to the present utility model is adjusted high in evaporation channel and heat transfer path using baffle door
The flow velocity of warm flue gas, the high-temperature flue gas in evaporation channel need to control relatively low flow velocity, utilize the high-temperature flue gas tool in evaporation channel
The characteristics of some high temperature and its unsaturated water steam, enables the high-temperature flue gas in evaporation channel to fully absorb the waste water after gasification；
High-temperature flue gas in heat transfer path can carry out large-scale flue gas flow rate tune on the premise of heat exchange is ensured by baffle door
It is whole.
(2) a kind of Desulphurization for Coal-fired Power Plant wastewater zero discharge system, including：Boiler, desulfurizing tower and the separation of above-mentioned evaporation and concentration
Device；It is described evaporation and concentration separator by main cigarette wind passage be arranged on the boiler tail flue gas port of export and desulfurization tower flue gas into
Between mouth end, the discharge of wastewater mouth of the desulfurizing tower is connected with the outlet of the evaporation channel.
Desulphurization for Coal-fired Power Plant wastewater zero discharge system according to the present utility model utilizes the air-introduced machine in boiler or supercharging wind
Machine divides the waste heat flue gas that the boiler tail flue gas port of export is discharged to two-way, wherein, waste heat flue gas is filled from separation is concentrated by evaporation all the way
The entrance of evaporation channel in putting flows into evaporation channel, and the desulfurization wastewater of desulfurizing tower discharge is from the steaming being concentrated by evaporation in separator
The outlet for sending out passage flows into, and waste heat flue gas carries out desulfurization wastewater to directly heat evaporation and concentration, and takes away the water in desulfurization wastewater
Point, waste heat flue gas is expelled to desulfurizing tower gas inlet end from the outlet of evaporation channel, and the water in waste heat flue gas is removed through desulfurizing tower
Drop and sulphur-containing substance are finally discharged from chimney；Another way waste heat flue gas enters from the heat transfer path being concentrated by evaporation in separator
Mouthful flow into heat transfer path, the waste heat flue gas utilization heat conductive wall in heat transfer path the desulfurization wastewater in evaporation channel is carried out indirectly plus
Thermal evaporation concentrates, and is then expelled to desulfurizing tower gas inlet end from the outlet of heat transfer path, is removed through desulfurizing tower in waste heat flue gas
Sulphur-containing substance, finally from chimney discharge.
In the Desulphurization for Coal-fired Power Plant wastewater zero discharge system of the utility model, separator and main cigarette wind passage are concentrated by evaporation
Connection mode be：By the entrance of the entrance of evaporation channel and the heat transfer path respectively with the air-introduced machine in main cigarette wind passage or
The outlet connection of booster fan, the outlet of the evaporation channel and the outlet of the heat transfer path respectively with close desulfurization tower flue gas
The main cigarette wind passage connection of input end.
In the Desulphurization for Coal-fired Power Plant wastewater zero discharge system of the utility model, separator and main cigarette wind passage are concentrated by evaporation
Connection can also be in the following ways：By the entrance of the entrance of evaporation channel and the heat transfer path respectively with the main cigarette wind
In passage air-introduced machine or booster fan outlet connection, the evaporation channel outlet and the heat transfer path outlet respectively with
The entrance of air-introduced machine or booster fan connects in main cigarette wind passage.Using this connection mode, gone out using air-introduced machine or booster fan
The positive pressure of mouth overcomes the running resistance for being concentrated by evaporation separator；Simultaneously as waste heat flue gas and desulfurization in evaporation channel
Waste water carries out surface contact, obtains carrying the wet flue gas of water vapour；Flue gas in heat transfer path does not connect directly with desulfurization wastewater
It touching, exhaust gas components do not change, therefore, when the flue gas of evaporation channel and heat transfer path outlet discharge returns to main cigarette wind passage,
Returning to the flue gas of main cigarette wind passage does not increase salt in desulfurization wastewater, fouling corrosion-free to air-introduced machine or booster fan equipment
Wait harmful effects.
Desulphurization for Coal-fired Power Plant wastewater zero discharge system provided by the utility model, based on the evaporation and concentration set in the system
Separator carries out circulating-heating evaporation and concentration using the waste heat flue gas of boiler emission to the desulfurization wastewater that desulfurizing tower discharges, real
The zero-emission of desulfurization wastewater is showed.The system structure is simple, without high-quality steam, without pipe type heat transfer system, avoids de-
The repetition heat exchange of sulphur wastewater zero discharge process and thermal loss caused by it；Delivery pump in system only plays conveying and makees
With, operation not with pressure, no highly energy-consuming equipment is at low cost；It is de- that the system simplifies desulfurization wastewater pretreatment, wastewater minimisation processing etc.
Sulphur wastewater treatment link, trouble point is less, and repair and maintenance is convenient.
In addition, Desulphurization for Coal-fired Power Plant wastewater zero discharge system provided by the utility model can have following supplementary technology spy
Sign：
As preference, the evaporation and concentration separator includes multiple evaporation channels, the multiple evaporation channel is in W types
It is sequentially overlapped in the top of the heat transfer path.Desulphurization for Coal-fired Power Plant wastewater zero discharge system according to the present utility model, it is multiple
Evaporation channel is sequentially overlapped in W types in the top of heat transfer path, and the substantial amounts of desulfurization wastewater of desulfurizing tower discharge can be divided into multiply point
It is not passed through in the evaporation channel being concentrated by evaporation in separator, can more utilize the waste heat of the boiler tail flue gas port of export faster
Flue gas carries out circulating-heating evaporation and concentration to the desulfurization wastewater that desulfurizing tower is discharged, and is conducive to its industrialized production and application.
Description of the drawings
The utility model is described in further details in the following with reference to the drawings and specific embodiments.
Fig. 1 is the structure diagram of the evaporation and concentration separator of the utility model；
Fig. 2 is a kind of structure diagram of embodiment of Desulphurization for Coal-fired Power Plant wastewater zero discharge system；
Fig. 3 is the structure diagram of another embodiment of Desulphurization for Coal-fired Power Plant wastewater zero discharge system；
Fig. 4 is the structure diagram of another embodiment of Fig. 3 Desulphurization for Coal-fired Power Plant wastewater zero discharge systems.
In more than figure：1 boiler；101 main cigarette wind passages；2 are concentrated by evaporation separator；3 evaporation channels；301 evaporations are logical
The entrance in road；The outlet of 302 evaporation channels；4 heat transfer paths；The entrance of 401 heat transfer paths；The outlet of 402 heat transfer paths；5 points
Liquid bath；6 collecting tanks；7 waste water pumps；701 delivery pumps；702 concentrated waters pump；703 back water pumps；8 whizzers；9 driers；10 desulfurization
Tower；11 chimneys.
Specific embodiment
With reference to figure 1, a kind of evaporation and concentration separator, for wastewater treatment, including evaporation channel 3, heat transfer path 4 and from
Centrifugal separator 8, evaporation channel 3 and heat transfer path 4 are in parallel superposition above and below double W types, positioned at the evaporation channel 3 of upside and under being located at
The heat transfer path 4 of side shares a W type heat conductive wall；Liquid separation slot 5, W types bottom are respectively arranged at the top of W types in evaporation channel 3
Collecting tank 6 is respectively arranged with, liquid separation slot 5 provides waste water moisture film to be evaporated to W types heat conductive wall；It is adjacent along flue gas negative direction
Delivery pump 701 is provided between collecting tank 6 and liquid separation slot 5；The inlet of delivery pump 701 is connected by conveyance conduit and collecting tank 6
It connects, the liquid outlet of delivery pump 701 is connected by conveyance conduit with liquid separation slot 5；The waste water conveying direction of delivery pump 701 and flue gas stream
To opposite；Collecting tank 6 positioned at the inlet of evaporation channel 3 is connected by concentrated water pump 702 with the feed inlet of whizzer 8,
The leakage fluid dram of whizzer 8 is connected by back water pump 703 with the collecting tank 6 in the exit positioned at evaporation channel 3, is centrifuged
The solid waste mouth of device 8 is communicated with drier 9；Collecting tank 6 positioned at the exit of evaporation channel 3 is also communicated with transport wastewater
Waste water pump 7.
In the embodiment above, high-temperature flue gas is passed through into evaporation channel 3 and heat transfer path 4 respectively, utilizes evaporation channel 3
Interior high-temperature flue gas creates the unsaturated flue gas environment of high temperature under a flow regime, and waste water is from the exit of evaporation channel 3
To flow into evaporation channel 3 with high-temperature flue gas opposite course；High-temperature flue gas in evaporation channel 3 to the waste water in evaporation channel 3 into
Row directly heats evaporation and concentration, and takes away the moisture in waste water；High-temperature flue gas in heat transfer path 4 is by W types heat conductive wall to useless
Water carries out indirectly heat evaporation and concentration.High-temperature flue gas and waste water in evaporation channel 3, salt content is higher in waste water, then gets over
Need higher thermal energy that can realize the evaporation and concentration of waste water；High-temperature flue gas in evaporation channel 3 is with subsequent flowing, temperature
It continuously decreases, relative humidity gradually increases, and the waste water of contact is also more and more lighter, and so as to persistently imitate, " meteorology of natural environment is former
Reason ", ideally, it can be achieved that high-temperature flue gas in evaporation channel 3 close to water vapour saturation state.
Waste water can be delivered to the collecting tank 6 in 3 exit of evaporation channel using waste water pump 7, the waste water in collecting tank 6 is defeated
It send and liquid separation slot 5 at the top of W types is delivered under the action of pump 701, the waste water in liquid separation slot 5 is by overflow type along liquid separation slot 5
Both sides heat conductive wall flow into both sides collecting tank 6, while in the heat conductive wall of both sides formed waste water moisture film；Wherein overflow direction
The collecting tank 6 that the waste water outflow consistent with the flow of flue gas direction in evaporation channel 3 enters is this grade of collecting tank 6；Overflow direction with
The collecting tank 6 that the opposite waste water outflow in flow of flue gas direction in evaporation channel 3 enters is next stage collecting tank 6.This grade of collecting tank 6
In waste water liquid separation slot 5 is delivered under the action of delivery pump 701, realize waste water circulating and evaporating concentration；Next stage collecting tank 6
In waste water liquid separation slot 5 is delivered under the action of delivery pump 701, realize waste water circulating and evaporating concentration；Until waste water is through steaming
The entrance outflow of passage 3 is sent out, obtains saturation concentrated water.Saturation concentrated water is delivered to whizzer 8 by concentrated water pump 702, carries out solid-liquid
Separation, obtains separating liquid and solid waste, separating liquid is delivered to the liquid collecting positioned at 3 exit of evaporation channel by back water pump 703
Slot 6 carries out circulating-heating evaporation and concentration；Solid waste is dried by drier 9, finally realizes the evaporation and concentration of waste water with separating,
Achieve the purpose that wastewater zero discharge.
In addition, evaporation and concentration separator provided by the utility model can have following additional embodiment：
One embodiment according to the present utility model, W type heat conductive walls are made of corrugated plating.
In the embodiment above, it is further exacerbated by the evaporation of waste water using corrugated plating, the waste water in liquid separation slot 5 passes through overflow
When the heat conductive wall of form along 5 both sides of liquid separation slot flows into the collecting tank 6 of its both sides, it can be formed in the heat conductive wall that is made of corrugated plating
Waste water moisture film, the lines on corrugated plating increases the contact area of high-temperature flue gas and waste water in evaporation channel 3, while extends useless
Displacement distance of the water in heat conductive wall, therefore, the heat conductive wall being made of corrugated plating can aggravate the evaporating concentration process of waste water.Separately
Outside, corrugated plating has good sealing performance, makes evaporation channel 3 and the high-temperature flue gas in heat transfer path 4 completely separated.Corrugated plating
For polytetrafluoroethylene (PTFE) material, high salt corrosion, such as chloride ion corrosion are can be resistant to, and makes corrugated plating that there is good heat transfer property,
Heating evaporation concentration is carried out to the waste water in evaporation channel 3 convenient for the high-temperature flue gas in heat transfer path 4.
With reference to figure 1, one embodiment according to the present utility model, the leakage fluid dram of whizzer 8 by back water pump 703 with
The inlet connection of delivery pump 701.
In the embodiment above, separating liquid is passed sequentially through into delivery pump 701 and is delivered to liquid separation slot 5, the separation in liquid separation slot 5
Liquid flows into the collecting tank 6 of both sides by the heat conductive wall of overflow type along the both sides of liquid separation slot 5, while in the heat conductive wall of both sides
Form moisture film；The collecting tank 6 that wherein the overflow direction waste water outflow consistent with the flow of flue gas direction in evaporation channel 3 enters is this
Grade collecting tank 6；The collecting tank 6 that the overflow direction waste water outflow opposite with the flow of flue gas direction in evaporation channel 3 enters is next
Grade collecting tank 6.Separating liquid in this grade of collecting tank 6 is delivered to liquid separation slot 5 under the action of delivery pump 701, realizes separating liquid
Circulating-heating is concentrated by evaporation.
One embodiment according to the present utility model, the entrance of evaporation channel 3 and the entrance of heat transfer path 4 are both provided with gear
Plate door.
In the embodiment above, the flow velocity of high-temperature flue gas in evaporation channel 3 and heat transfer path 4 is adjusted using baffle door, is steamed
High-temperature flue gas in hair passage 3 need to control relatively low flow velocity, the high temperature that has using the high-temperature flue gas in evaporation channel 3 and its non-
The characteristics of saturated steam, enables the high-temperature flue gas in evaporation channel 3 to fully absorb the waste water after gasification；In heat transfer path 4
High-temperature flue gas can carry out large-scale flue gas flow rate adjustment on the premise of heat exchange is ensured by baffle door.
With reference to figure 1 and Fig. 2, the Desulphurization for Coal-fired Power Plant wastewater zero discharge system of the utility model, including：Boiler 1, desulfurizing tower
10 and above-mentioned evaporation and concentration separator 2；It is concentrated by evaporation separator 2 and 1 afterbody cigarette of boiler is arranged on by main cigarette wind passage 101
Between 10 gas inlet end of the gas port of export and desulfurizing tower, the discharge of wastewater mouth of the desulfurizing tower 10 and going out for the evaporation channel 3
Mouth connection.
In above example, the 1 tail flue gas port of export of boiler is discharged using the air-introduced machine in boiler 1 or booster fan
Waste heat flue gas divides two-way, wherein, the entrance 301 of waste heat flue gas from the evaporation channel being concentrated by evaporation in separator 2 flows into all the way
Evaporation channel 3, the desulfurization wastewater that desulfurizing tower 10 is discharged are flowed into from the outlet 302 for the evaporation channel being concentrated by evaporation in separator 2,
Waste heat flue gas carries out desulfurization wastewater to directly heat evaporation and concentration, and takes away the moisture in desulfurization wastewater, and waste heat flue gas is from evaporation
The outlet 302 of passage is expelled to 10 gas inlet end of desulfurizing tower, and water droplet and sulfur-bearing object in waste heat flue gas are removed through desulfurizing tower 10
Matter is finally discharged from chimney 11；The entrance 401 of another way waste heat flue gas from the heat transfer path being concentrated by evaporation in separator 2 flows
Enter heat transfer path 4, the waste heat flue gas utilization heat conductive wall in heat transfer path 4 desulfurization wastewater in evaporation channel 3 is carried out indirectly plus
Thermal evaporation concentrates, and is then expelled to 10 gas inlet end of desulfurizing tower from the outlet of heat transfer path 402, and waste heat is removed through desulfurizing tower 10
Sulphur-containing substance in flue gas is finally discharged from chimney 11.
With reference to figure 2, in the Desulphurization for Coal-fired Power Plant wastewater zero discharge system of the utility model, be concentrated by evaporation separator 2 with
The connection mode of main cigarette wind passage 101 is：By the entrance of the entrance of evaporation channel 3 and heat transfer path 4 respectively with main cigarette wind passage
The outlet connection of air-introduced machine or booster fan in 101, the outlet of evaporation channel 3 and the outlet of heat transfer path 4 respectively with it is close
The main cigarette wind passage 101 at 10 gas inlet end of desulfurizing tower connects.
With reference to figure 3, in the Desulphurization for Coal-fired Power Plant wastewater zero discharge system of the utility model, be concentrated by evaporation separator 2 with
The connection of main cigarette wind passage 101 can also be in the following ways：The entrance of the entrance of evaporation channel 3 and heat transfer path 4 is distinguished
Outlet with air-introduced machine or booster fan in a main cigarette wind passage 101 is connected, the outlet of evaporation channel 3 and heat transfer path 4
Outlet be connected respectively with the air-introduced machine in the main cigarette wind passage 101 of this or the entrance of booster fan.With reference to figure 4, can will also steam
Send out the outlet of the entrance and air-introduced machine or booster fan in the wherein main cigarette wind passage 101 drawn from boiler of passage 3
Connection, the outlet of evaporation channel 3 is connected with the air-introduced machine in another main cigarette wind passage 101 or the entrance of booster fan, will
The entrance of heat transfer path 4 and the air-introduced machine in the wherein main cigarette wind passage 101 drawn from boiler or booster fan go out
Mouth connection, the outlet of heat transfer path 4 is connected with the air-introduced machine in another main cigarette wind passage 101 or the entrance of booster fan.
Using above-mentioned connection mode, the positive pressure exported using air-introduced machine or booster fan overcomes evaporation and concentration separator
2 running resistance；Simultaneously as the waste heat flue gas in evaporation channel 3 carries out surface with desulfurization wastewater and contacts, obtain carrying water
The wet flue gas of steam；Flue gas in heat transfer path 4 is not directly contacted with desulfurization wastewater, and exhaust gas components do not change, and therefore, works as steaming
When hair passage 3 and the flue gas of the outlet of heat transfer path 4 discharge return to main cigarette wind passage 101, the flue gas of main cigarette wind passage 101 is returned to not
Increase the salt in desulfurization wastewater, to the harmful effects such as air-introduced machine or the corrosion-free, fouling of booster fan equipment.
Desulphurization for Coal-fired Power Plant wastewater zero discharge system provided by the utility model, based on the evaporation and concentration set in the system
It is dense to carry out circulating-heating evaporation using the waste heat flue gas that boiler 1 discharges to the desulfurization wastewater that desulfurizing tower 10 discharges for separator 2
Contracting, realizes the zero-emission of desulfurization wastewater.The system structure is simple, without high-quality steam, without pipe type heat transfer system, avoids
The repetition heat exchange of desulfurization wastewater zero-emission process and thermal loss caused by it；Delivery pump in system only rises defeated
Effect is sent, operation not with pressure, no highly energy-consuming equipment is at low cost；The system simplifies desulfurization wastewater pretreatment, wastewater minimisation processing
Desulfurization wastewaters processing links are waited, trouble point is less, and repair and maintenance is convenient.
In addition, Desulphurization for Coal-fired Power Plant wastewater zero discharge system provided by the utility model can have following additional implementation
Example：
Another embodiment according to the present utility model, the evaporation and concentration separator 2 include multiple evaporation channels 3,
The multiple evaporation channel 3 is sequentially overlapped in W types in the top of the heat transfer path.
In above example, multiple evaporation channels 3 are sequentially overlapped in W types in the top of heat transfer path 4, and desulfurizing tower 10 is discharged
Substantial amounts of desulfurization wastewater can be divided into multiply each lead into be concentrated by evaporation separator 2 in evaporation channel 3 in, can more faster
The desulfurization wastewater discharged to desulfurizing tower 10 of the waste heat flue gas using the 1 tail flue gas port of export of boiler to carry out circulating-heating evaporation dense
Contracting, is conducive to its industrialized production and application.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
New spirit and scope.If in this way, these modification and variations of the utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these modification and variations.
Claims (5)
1. a kind of evaporation and concentration separator, for wastewater treatment, which is characterized in that including evaporation channel (3), heat transfer path
(4) and whizzer (8), the evaporation channel (3) is in parallel superposition above and below double W types with the heat transfer path (4), positioned at upper
The evaporation channel (3) of side shares a W type heat conductive wall with the heat transfer path (4) positioned at downside；
Liquid separation slot (5) is respectively arranged at the top of W types in the evaporation channel (3), W types bottom is respectively arranged with collecting tank (6),
The liquid separation slot (5) provides waste water moisture film to be evaporated to W types heat conductive wall；
Along flue gas negative direction, delivery pump (701) is provided between adjacent collecting tank (6) and liquid separation slot (5)；The delivery pump
(701) inlet is connected by conveyance conduit with the collecting tank (6), and the liquid outlet of the delivery pump (701) passes through conveying
Pipeline is connected with the liquid separation slot (5)；The waste water conveying direction of the delivery pump (701) is opposite with flue gas flow direction；
Collecting tank (6) positioned at the evaporation channel (3) inlet pumps (702) and the whizzer (8) by concentrated water
Feed inlet connects, and the leakage fluid dram of the whizzer (8) passes through back water pump (703) and going out positioned at the evaporation channel (3)
Collecting tank (6) connection at mouthful, the solid waste mouth of the whizzer (8) are communicated with drier (9)；
Collecting tank (6) positioned at the exit of the evaporation channel (3) is also communicated with the waste water pump (7) of transport wastewater.
2. evaporation and concentration separator according to claim 1, which is characterized in that the W types heat conductive wall is by corrugated plating structure
Into.
3. evaporation and concentration separator according to claim 1, which is characterized in that the drain of the whizzer (8)
Mouth is connected by back water pump (703) with the inlet of the delivery pump (701).
4. a kind of Desulphurization for Coal-fired Power Plant wastewater zero discharge system, which is characterized in that including：Boiler (1), desulfurizing tower (10) and right
It is required that the evaporation and concentration separator (2) described in 1；The evaporation and concentration separator (2) is set by main cigarette wind passage (101)
Between boiler (1) the tail flue gas port of export and desulfurizing tower (10) gas inlet end, the discharge of wastewater mouth of the desulfurizing tower (10)
Outlet with the evaporation channel (3) is connected.
5. Desulphurization for Coal-fired Power Plant wastewater zero discharge system according to claim 4, which is characterized in that described be concentrated by evaporation is divided
Multiple evaporation channels (3) are included from device (2), the multiple evaporation channel (3) is sequentially overlapped in W types in the heat transfer path
Top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721278368.XU CN207375782U (en) | 2017-09-30 | 2017-09-30 | A kind of evaporation and concentration separator and Desulphurization for Coal-fired Power Plant wastewater zero discharge system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721278368.XU CN207375782U (en) | 2017-09-30 | 2017-09-30 | A kind of evaporation and concentration separator and Desulphurization for Coal-fired Power Plant wastewater zero discharge system |
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| CN207375782U true CN207375782U (en) | 2018-05-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496412A (en) * | 2019-01-25 | 2019-11-26 | 孙鹏雨 | A kind of strong brine processing unit of environmental protection |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496412A (en) * | 2019-01-25 | 2019-11-26 | 孙鹏雨 | A kind of strong brine processing unit of environmental protection |
| CN110496412B (en) * | 2019-01-25 | 2021-05-14 | 六安市匠心信息科技有限公司 | Strong brine treatment device of environmental protection |
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