CN103691296A - Water circulating system and method of PM2.5 flue gas treatment tower - Google Patents
Water circulating system and method of PM2.5 flue gas treatment tower Download PDFInfo
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- CN103691296A CN103691296A CN201310681078.XA CN201310681078A CN103691296A CN 103691296 A CN103691296 A CN 103691296A CN 201310681078 A CN201310681078 A CN 201310681078A CN 103691296 A CN103691296 A CN 103691296A
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Abstract
The invention discloses a water circulating system and a water circulating method of a PM2.5 flue gas treatment tower. The water circulating system comprises a flue gas treatment tower, a dehydrator, a gypsum hydrocyclone station, a sedimentation tank, a filter, a pH regulating tank, a circulating water tank and a water supply tank, wherein the flue gas treatment tower is communicated and connected to the dehydrator, the dehydrator is communicated and connected to the gypsum hydrocyclone station, the gypsum hydrocyclone station is communicated and connected to the sedimentation tank, the sedimentation tank is communicated and connected to the filter, the filter is communicated and connected to the circulating water tank, the water supply tank is communicated and connected to the circulating water tank, the pH regulating tank is communicated and connected to the circulating water tank, and the circulating water tank is communicated and connected to a water utilization opening of the flue gas treatment tower to form a water circulation loop. By adopting the water circulating system and method disclosed by the invention, basic balance between wash water recycling dosage and polar plate wash water of a wet electric dust collector is guaranteed, no new water consumption is added and the water balance problem of the flue gas treatment tower can be effectively solved.
Description
Technical field
The present invention relates to the technical field of the water circulation treatment process of air pollution control system, relate in particular to a kind of PM2.5 smoke gas treatment tower water circulation system and method.
Background technology
Country more and more payes attention to environmental protection, fine flue dust, SO
3, mercury, aerosol contaminants etc. have reduction of discharging requirement, new < < ambient air quality (GB3095-2012) the > > of country also includes PM2.5 in ambient air quality; Country discharges and has also proposed requirements at the higher level, up-to-date < < fossil-fuel power plant atmospheric pollutant emission standard (enforcement on January 1st, 2012) > > part specific requirement coal steam-electric plant smoke simultaneously:
The most of power plant of China all adopts wet desulphurization, and general desulfurizer there is no GGH, and the exhaust gas temperature after desulfurization is 50 ℃ of left and right only, although all chimney has been carried out to preservative treatment, antiseptic effect is not ideal enough, still has chimney low temperature SO
3the serious problems of corrosion.
Wet desulphurization (take lime stone, lime [carbide slag]/gypsum as main) technology maturation, stable, accessory substance is easily processed, integrated operation cost is lower, and removal efficiency is high, is the leading technique of domestic power plant desulfurization; But also exist the fine solid thing escape tower body problem of gypsum, demist efficiency, SO
3the problem such as fine aerosol of acid mist due to conversion ratio, is presented as in these problem sets and " gypsum rain " phenomenon of smoke outlet has a strong impact on environmental hazard health, especially putting into operation of power industry denitrification apparatus, has more increased the weight of SO in flue gas
3conversion ratio problem, " gypsum rain " phenomenon will be on the rise, this is also current power plant wet desulphurization one of stubborn problem the most.
Aspect dedusting, adopt at present front end dust collecting process, be mainly dry electrostatic cleaner and the dedusting of electricity bag; After dedusting, flue gas enters after desulphurization system, and dust content exists the phenomenon of " not falling anti-increasing ".In order to reach new discharge standard, need to after existing flue gas managing technique, increase dust collecting process newly.For this reason, applicant is required for market, through years of researches tackling key problem, is digesting and assimilating on the basis of advanced foreign technology, has has successfully researched and developed a kind of pollutant minimum discharge terminal and has administered product---smoke gas treatment tower.
Smoke gas treatment tower integrates wet desulphurization, wet-esp; Wet-esp part wherein, utilizes on pole plate, to form water membrane and clean and be trapped in the dust on pole plate.Upper direction dust-collecting polar board of electric dust remover at deduster supplies water, and deashing water flows downward under Action of Gravity Field, forms the ash removing water film that covers whole pole plate, takes away the dust being collected on dust collecting pole plate, falls into the wet desulfurization system of deduster below.Compare and have the following advantages with dry electric precipitation device: do not need rapping equipment, thereby eliminated the reentrainment of dust that rapping causes, can also prevent air-flow, the wind-induced reentrainment of dust of corona; On pole plate, there is all the time water membrane, after dust (flue dust) become trapped on pole plate, by moisture film, rinsed out immediately, thereby for high resistivity dust (flue dust), anti-corona can not occur, the reentrainment of dust that anti-corona causes can not occur; For low resistivity dust (flue dust), the particle that can not be captured is fled from pole plate, again the phenomenon in Returning flow.Due to above-mentioned advantage, wet-esp has very high efficiency of dust collection, can be applicable to arbitrarily, than the flue dust of resistance, smoke dust discharge concentration can being controlled to 10mg/Nm
3below, meet in the world the requirement of strict discharge standard.
But wet type deashing relies on pole plate and forms the dust that moisture film cleans trapping, a 300MW unit deashing water needs 100t/h, and deashing water is owing to there being sour gas to incorporate, and pH value is lower.Hence one can see that, and deashing water can have certain diluting effect to the gypsum slurries of desulphurization system, affects the pH value of desulphurization system simultaneously.After having increased wet-esp system, how to guarantee system water balance, the impact of minimizing to desulphurization system, it is the difficult problem that smoke gas treatment tower need to solve, for this reason, we sum up domestic and international correlation technique experience in conjunction with actual condition, through long-term research, invented a kind of water circulation system and method for PM2.5 smoke gas treatment tower.
Summary of the invention
In view of the deficiency that above-mentioned prior art exists, the present invention proposes a kind of PM2.5 smoke gas treatment tower water circulation system and method that can solve smoke gas treatment tower water balance problem.
The present invention is for achieving the above object, and a kind of PM2.5 smoke gas treatment tower water circulation system provided by the invention, comprising:
The smoke gas treatment tower that integrates wet desulphurization, wet-esp,
The dewaterer of the mixed waste liquor of discharging for smoke gas treatment tower described in processed,
For removing the gypsum rotational flow station of described mixed waste liquor particle,
For described mixed waste liquor being added to coagulant and the sedimentation basin that carries out gravitational settling,
For described mixed waste liquor being carried out to the filter of multistage filtering,
For regulating the pH regulating tank of described mixed waste liquor pH value,
Be used to described smoke gas treatment tower that the cyclic water tank of cycling use of water is provided,
For supplementing the supply tank of the described cyclic water tank water yield;
The mixed waste liquor delivery port conducting of described smoke gas treatment tower is connected on described dewaterer, the delivery port conducting of described dewaterer is connected on described gypsum rotational flow station, the delivery port conducting of described gypsum rotational flow station is connected on described sedimentation basin, the delivery port conducting of described sedimentation basin is connected on described filter, the delivery port conducting of described filter is connected on described cyclic water tank, the delivery port conducting of described supply tank is connected on described cyclic water tank, the conducting of described pH regulating tank is connected on described cyclic water tank, the delivery port conducting of described cyclic water tank is connected on the water nozzle of described smoke gas treatment tower, form water-flow circuit.
As a further improvement on the present invention, described smoke gas treatment tower comprises for the electric field section of wet-esp with for the desulfurization section of wet desulphurization, described electric field section is arranged on the top of described smoke gas treatment tower, in described electric field section, be provided with wet electrical dust precipitator, described desulfurization section is arranged on the bottom of described smoke gas treatment tower, on described desulfurization section, be provided with limestone-gypsum slurries self-loopa spraying layer, the top of described electric field section is provided with the atomizer for the pole plate of described wet electrical dust precipitator is rinsed, described atomizer is connected with the delivery port conducting of described cyclic water tank.
As a further improvement on the present invention, centered by described sedimentation basin, intake, top water outlet, bottom weight is except the vertical CD pond of slurry.
As a further improvement on the present invention, described sedimentation basin comprises pond body, central tube, grid, overflow plate, Rinsing Area, outlet pipe and discharge pipe, body top, described pond is provided with described grid, overflow plate, Rinsing Area and outlet pipe, described overflow plate is along the upper edge setting of described pond body, described Rinsing Area winding is in described overflow plate outside, described outlet pipe conducting is arranged on described Rinsing Area, described central tube is plugged on the body of described pond, water outlet is in described grid below, described discharge pipe is arranged on body bottom, described pond, described mixed waste liquor is imported in the body of described pond by described central tube, seeing through described grid and overflow plate enters in described Rinsing Area, by described outlet pipe, derived.
As a further improvement on the present invention, described filter is filer element type automatic backwashing filter.
The present invention also proposes a kind of PM2.5 smoke gas treatment tower water circulation method, the gypsum slurries of the flushing water of smoke gas treatment tower electric field section and desulfurization section is mixed to the mixed waste liquor of discharging and carry out cycle for the treatment of use, comprises the following steps:
Dehydration: described mixed waste liquor is delivered in gypsum dehydration band and is dewatered, and gypsum is transported between gypsum storage, the filtrate input next step after the press filtration of gypsum dehydration band.
Second particle thing is removed step: by described filtrate input gypsum rotational flow station, carry out the removal of second particle thing.
Settling step: by the liquid input sedimentation basin after second particle thing is removed step, the particle of liquid is removed in the effect bottom of gravity and inertia force lease making precipitation.
Essence filtration step: by the liquid input filter after settling step, carry out essence and filter, the solid particle in liquid more than 99% is removed, solid content≤50mg/L in water outlet.
PH value regulating step: in the liquid input cyclic water tank through smart filtration step, carry out pH adjusting.
Water supply step: the liquid in described cyclic water tank is inputted to the flushing water as electric field section in smoke gas treatment tower by circulating pump and recycle.
As a further improvement on the present invention, also comprise a watering step: by supply tank output clear water, added in described cyclic water tank.
As a further improvement on the present invention, described smoke gas treatment tower comprises for the electric field section of wet-esp with for the desulfurization section of wet desulphurization, described electric field section is arranged on the top of described smoke gas treatment tower, in described electric field section, be provided with wet electrical dust precipitator, described desulfurization section is arranged on the bottom of described smoke gas treatment tower, on described desulfurization section, be provided with limestone-gypsum slurries self-loopa spraying layer, the top of described electric field section is provided with the atomizer for the pole plate of described wet electrical dust precipitator is rinsed, described atomizer is connected with the delivery port conducting of described cyclic water tank.
As a further improvement on the present invention, centered by described sedimentation basin, intake, top water outlet, bottom weight is except the vertical CD pond of slurry, described sedimentation basin comprises pond body, central tube, grid, overflow plate, Rinsing Area, outlet pipe and discharge pipe, body top, described pond is provided with described grid, overflow plate, Rinsing Area and outlet pipe, described overflow plate is along the upper edge setting of described pond body, described Rinsing Area winding is in described overflow plate outside, described outlet pipe conducting is arranged on described Rinsing Area, described central tube is plugged on the body of described pond, water outlet is in described grid below, described discharge pipe is arranged on body bottom, described pond, liquid is imported in the body of described pond by described central tube, seeing through described grid and overflow plate enters in described Rinsing Area, by described outlet pipe, derived.
As a further improvement on the present invention, described filter is filer element type automatic backwashing filter.
The beneficial effect of PM2.5 smoke gas treatment tower water circulation system of the present invention and method and concrete applicable cases are as follows:
(1) because wet electrical dust precipitator can trap the finely ground particles that demister cannot trap, increased the content of fine particulates in waste water, increased waste water filtering difficulty.The pole plate of wet electrical dust precipitator needs continual flushing, by water circulation system of the present invention and method, has guaranteed pole plate flushing water in a basic balance of flushing water reuse amount and wet electrical dust precipitator, does not increase new water and consumes; Hence one can see that, and water circulation system of the present invention and method are most important for the water balance of smoke gas treatment tower.
(2) filtrate after dewaterer press filtration, first enter gypsum rotational flow station, in gypsum rotational flow station, under the effect of inertia force, filtrate is further filtered, removed particle is circulated to lime stone-gypsum pulping system, and water outlet enters sedimentation basin through pipeline, by adding coagulant, fine particle in waste water is adsorbed, with floccule body, under Action of Gravity Field, be deposited to sedimentation basin bottom, supernatant flows out from top overflow pipe; In traditional power plant effluent treatment process, after the supernatant of sedimentation basin is directly mixed with supplementing water, enter water circulation system, now in water, solids content is higher, and pH is on the low side, is unfavorable for GAS ABSORPTION, and lower pH has certain corrosivity to equipment simultaneously; The present invention is directed to these problems of existence, sedimentation basin water outlet has been carried out to three-stage filtration, water outlet is introduced to filer element type automatic backwashing filter, after filter cartridge type filter, solid content≤50mg/L in water outlet, meet smoke gas treatment tower atomizer to water quality requirement, in system, be provided with pH regulating tank, pH adjustable range, between 4.5～9.5, has guaranteed that the pH of system is stable, prevented in water circulation use process the corrosiveness to equipment; The water outlet of filer element type automatic backwashing filter mixes in cyclic water tank with supplementing water by circulating pump and is delivered in smoke gas treatment tower and recycles, reduced the utilization of supplementing water, increasing on the basis of cleaner, do not increase new water consumption, given full play to the advantage of smoke gas treatment tower.
Accompanying drawing explanation
Fig. 1 is the structural representation of PM2.5 smoke gas treatment tower water circulation system of the present invention.
Fig. 2 is the structural representation of smoke gas treatment tower of the present invention.
Fig. 3 is sedimentation basin side structure schematic diagram of the present invention.
Fig. 4 is sedimentation basin plan structure schematic diagram of the present invention.
Primary clustering symbol description in figure:
Smoke gas treatment tower 100, electric field section 110, wet electrical dust precipitator 111, atomizer 112, desulfurization section 120, limestone-gypsum slurries self-loopa spraying layer 121, dewaterer 200, gypsum rotational flow station 300, sedimentation basin 400, pond body 410, central tube 420, grid 430, overflow plate 440, Rinsing Area 450, outlet pipe 460, discharge pipe 470, flow-stopping plate 480, the beds of precipitation 490, filter 500, pH regulating tank 600, cyclic water tank 700, supply tank 800, between gypsum stores 900.
The specific embodiment
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Embodiment mono-:
Fig. 1 is the structural representation of PM2.5 smoke gas treatment tower water circulation system of the present invention.As shown in Figure 1, a kind of PM2.5 smoke gas treatment tower water circulation system that the present embodiment proposes, comprise: collection wet desulphurization, wet-esp is in the smoke gas treatment tower 100 of one, the dewaterer 200 of the mixed waste liquor of discharging for processed smoke gas treatment tower 100, for removing the gypsum rotational flow station 300 of described mixed waste liquor particle, for described mixed waste liquor being added to coagulant and the sedimentation basin 400 that carries out gravitational settling, for described mixed waste liquor being carried out to the filter 500 of multistage filtering, for regulating the pH regulating tank 600 of described mixed waste liquor pH value, be used to described smoke gas treatment tower that the cyclic water tank 700 of cycling use of water is provided, and for the supply tank 800 of replenishment cycles water tank 700 water yields.
As shown in Figure 1, the mixed waste liquor delivery port conducting of smoke gas treatment tower 100 is connected on dewaterer 200, the delivery port conducting of dewaterer 200 is connected on gypsum rotational flow station 300, the delivery port conducting of gypsum rotational flow station 300 is connected on sedimentation basin 400, the delivery port conducting of sedimentation basin 400 is connected on filter 500, exemplary, the filter 500 of the present embodiment adopts filer element type automatic backwashing filter, the delivery port conducting of filter 500 is connected on cyclic water tank 700, the delivery port conducting of supply tank 800 is connected on cyclic water tank 700, 600 conductings of pH regulating tank are connected on cyclic water tank 700, the delivery port conducting of cyclic water tank 700 is connected on the water nozzle of smoke gas treatment tower 100, form water-flow circuit.
Fig. 2 is the structural representation of smoke gas treatment tower of the present invention.Smoke gas treatment tower 100 as shown in Figure 2 comprises for the electric field section 110 of wet-esp with for the desulfurization section 120 of wet desulphurization, electric field section 110 is arranged on the top of smoke gas treatment tower 100, in electric field section 110, be provided with wet electrical dust precipitator 111, desulfurization section 120 is arranged on the bottom of smoke gas treatment tower 100, on desulfurization section 120, be provided with limestone-gypsum slurries self-loopa spraying layer 121, the top of electric field section 110 is provided with the atomizer 112 for the pole plate of wet electrical dust precipitator 111 is rinsed, and atomizer 112 is connected with the delivery port conducting of cyclic water tank 700.
Fig. 3 is sedimentation basin side structure schematic diagram of the present invention, and Fig. 4 is sedimentation basin plan structure schematic diagram of the present invention.As shown in Figure 3 and Figure 4, water inlet centered by sedimentation basin 400, top water outlet, bottom weight is except the vertical CD pond of slurry, sedimentation basin 400 comprises pond body 410, central tube 420, grid 430, overflow plate 440, Rinsing Area 450, outlet pipe 460 and discharge pipe 470, body 410 tops in pond are provided with grid 430, overflow plate 440, Rinsing Area 450 and outlet pipe 460, overflow plate 440 is along the upper edge setting of pond body 410, Rinsing Area 450 windings are in overflow plate 440 outsides, outlet pipe 460 conductings are arranged on Rinsing Area 450, central tube 420 is plugged on pond body 410, water outlet is in grid 430 belows, discharge pipe 470 is arranged on pond body 410 bottoms, described mixed waste liquor is imported in pond body 410 by central tube 420, seeing through grid 430 and overflow plate 440 enters in Rinsing Area 450, by outlet pipe 460, derived.
Certainly, in specific embodiment, smoke gas treatment tower and build-in components thereof, dewaterer, gypsum rotational flow station, sedimentation basin, filter, pH regulating tank, cyclic water tank and supply tank can be selected outsourcing piece according to demand, repeat no more herein.
Embodiment bis-:
The present embodiment proposes a kind of PM2.5 smoke gas treatment tower water circulation method, the gypsum slurries of the flushing water of smoke gas treatment tower electric field section and desulfurization section is mixed to the mixed waste liquor of discharging and carry out cycle for the treatment of use, shown in figure 1, comprises the following steps:
Dehydration: described mixed waste liquor is delivered in the gypsum dehydration band as dewaterer 200 and is dewatered, gypsum be transported to gypsum store between 900, the filtrate input next step after the press filtration of gypsum dehydration band.
Second particle thing is removed step: by described filtrate input gypsum rotational flow station 300, carry out the removal of second particle thing.
Settling step: by the liquid input sedimentation basin 400 after second particle thing is removed step, the particle of liquid is removed in the effect bottom of gravity and inertia force lease making precipitation.
Essence filtration step: by the liquid input filter 500 after settling step, carry out essence and filter, the solid particle in liquid more than 99% is removed, solid content≤50mg/L in water outlet.
PH value regulating step: in the liquid input cyclic water tank 700 through smart filtration step, carry out pH adjusting.
Watering step: added in cyclic water tank 700 by supply tank 800 output clear water.
Water supply step: the liquid in cyclic water tank 700 is recycled by the flushing water as electric field section in circulating pump (not shown) input smoke gas treatment tower 100.
Exemplary, the PM2.5 smoke gas treatment tower water circulation method of the present embodiment can directly adopt the PM2.5 smoke gas treatment tower water circulation system described in embodiment mono-, according to above-mentioned steps, from top to bottom carries out successively, realizes recycling of flushing water.
Concrete, as shown in Figure 2, smoke gas treatment tower 100 as shown in Figure 2 comprises for the electric field section 110 of wet-esp with for the desulfurization section 120 of wet desulphurization, electric field section 110 is arranged on the top of smoke gas treatment tower 100, in electric field section 110, be provided with wet electrical dust precipitator 111, desulfurization section 120 is arranged on the bottom of smoke gas treatment tower 100, on desulfurization section 120, be provided with limestone-gypsum slurries self-loopa spraying layer 121, the top of electric field section 110 is provided with the atomizer 112 for the pole plate of wet electrical dust precipitator 111 is rinsed, atomizer 112 is connected with the delivery port conducting of cyclic water tank 700.
Fig. 3 is sedimentation basin side structure schematic diagram of the present invention, and Fig. 4 is sedimentation basin plan structure schematic diagram of the present invention.As shown in Figure 3 and Figure 4, water inlet centered by sedimentation basin 400, top water outlet, bottom weight is except the vertical CD pond of slurry, sedimentation basin 400 comprises pond body 410, central tube 420, grid 430, overflow plate 440, Rinsing Area 450, outlet pipe 460 and discharge pipe 470, body 410 tops in pond are provided with grid 430, overflow plate 440, Rinsing Area 450 and outlet pipe 460, overflow plate 440 is along the upper edge setting of pond body 410, Rinsing Area 450 windings are in overflow plate 440 outsides, outlet pipe 460 conductings are arranged on Rinsing Area 450, central tube 420 is plugged on pond body 410, water outlet is in grid 430 belows, discharge pipe 470 is arranged on pond body 410 bottoms, described mixed waste liquor is imported in pond body 410 by central tube 420, seeing through grid 430 and overflow plate 440 enters in Rinsing Area 450, by outlet pipe 460, derived.
Concrete, filter 500 is filer element type automatic backwashing filter.
Shown in 1-4, the present embodiment is further described as follows by reference to the accompanying drawings:
Filtrate after the press filtration of belt dewatering bands, first enter gypsum rotational flow station 300, in gypsum rotational flow station 300, under the effect of inertia force, filtrate is further filtered, removed particle is circulated to lime stone-gypsum pulping system (not shown), water outlet enters sedimentation basin 400 through pipeline, by adding coagulant, fine particle in filtrate is adsorbed, with floccule body, under Action of Gravity Field, be deposited to sedimentation basin bottom, the outlet pipe 460 of supernatant from top Rinsing Area 450 flows out, in traditional power plant effluent treatment process, after the supernatant of sedimentation basin is directly mixed with supplementing water, enter water circulation system, now in water, solids content is higher, and pH is on the low side, is unfavorable for GAS ABSORPTION, and lower pH has certain corrosivity to equipment simultaneously, for further solving these problems that exist, the present embodiment to sedimentation basin 400 water outlets carried out three-stage filtration, water outlet is introduced to filter 500, the filter 500 that the present embodiment adopts is filer element type automatic backwashing filters, after filter 500 carries out essence filtration, solid particle in liquid more than 99% is removed, solid content≤50mg/L in water outlet, meet the water quality requirement of 112 pairs of flushing waters of smoke gas treatment tower 100 atomizers, the pH regulating tank 600 being simultaneously provided with, pH adjustable range is between 4.5～9.5, the pH that has guaranteed recirculated water is stable, prevented in water circulation use process, corrosiveness to equipment, the supplementing water of the water outlet of filter 500 and supply tank 800 recycled in interior mixing in being delivered to smoke gas treatment tower 100 by circulating pump of cyclic water tank 700, reduced the utilization of supplementing water, increasing on the basis of cleaner, do not increase new water consumption, given full play to the advantage of smoke gas treatment tower.
Wherein the concrete method of operation of sedimentation basin 400 is as follows:
300 water outlets of gypsum rotational flow station, through waterpipe, pump in sedimentation basin 400, as shown in Figure 3,300 water outlets of gypsum rotational flow station enter from central tube 420 entrances of sedimentation basin 400, along central tube 420, flow downward, bottom in central tube 420 outlets is also provided with flow-stopping plate 480, and under the effect of flow-stopping plate 480, outlet current are subject to bounce upwards, upwards flow, simultaneously interior according to actual conditions interpolation coagulant at sedimentation basin 400, as better in particle sedimentation effect, can selectively add; On current direction, in mobile process, the bulky grain in water, under the effect of gravity, moves downward, and finally falls into the beds of precipitation 490; Granule in water, under the suction-operated of water-borne glue body, is adsorbed, and particle is grown up gradually, final under the effect of gravity, sinks to the beds of precipitation 490 of sedimentation basin 400 bottoms; For preventing that part particle, colloid etc. from being taken out of by current, on the top of sedimentation basin 400 water outlets, be provided with grid 430, tackle, guaranteed the effluent quality of sedimentation basin 400, reduced the burden of lower end filter 500 water treatments.
Filter 500 carries out the dirty water decontamination handles, comprises the following steps:
Filtration stage: the liquid after sedimentation basin is imported in the cavity of resorption of filter by sewage transport pump and sewage water inlet pipe, described liquid is filtered while seeing through filter core, the impurity that is greater than filter core mesh is trapped, through described filter core mesh, the water purification that enters described filter core inside enters in the epicoele of tower body by described filter core fixing hole, from outlet pipe, derives.
The backwash stage: pile up gradually when filtering cartridge surface filter cake, along with the aggregation of holding back on filter core increases, and the effective filtration area of filter core reduces, cause the pressure reduction of epicoele and cavity of resorption to increase, when pressure reduction reaches predetermined value, pressure difference transmitter output pressure difference signal is to Programmable Logic Controller, Programmable Logic Controller outputs a control signal to import barrier valve according to default programming, on backwash by-pass valve control and blowdown by-pass valve control: first close import barrier valve, open backwash by-pass valve control and blowdown by-pass valve control simultaneously, and carry out liquid level in control tower by leve monitor, when arriving control point, liquid level closes described blowdown by-pass valve control, keep backwash by-pass valve control to open, after back purge system time delay pressurization, automatically open blowdown by-pass valve control, under High Pressure, form back flush force of explosion, rapidly the impurity that is deposited in filter core surface is washed, the time of rinsing can regulate according to developing result (by observing the pressure recovery situation of pressure difference transmitter, determining).
Recirculated water utilizes situation, in wet electrical dust precipitator 111 application, the moisture film of pole plate plane forms dust removing effects of crucial importance, how to form stable uniform moisture film, affects the height of discharge inception voltage, also affect the stability of voltage simultaneously, in order to solve pole plate moisture film problem, this embodiment has adopted atomizer 112 at the moisture film formation stages of recirculated water utilization, and the material of atomizer 112 adopts stainless steel, nozzle angle is 40～120 degree, and mist droplet granularity is between 10～100 microns.
In actual applications, according to the layout quantity of the design height between atomizer and pole plate, atomizer, the atomization angle of choose reasonable atomizer, the spray angle of adjusting atomizer, by after recirculated water atomization, forms uniform moisture film on the surface of pole plate.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a PM2.5 smoke gas treatment tower water circulation system, is characterized in that: comprise
The smoke gas treatment tower that integrates wet desulphurization, wet-esp,
The dewaterer of the mixed waste liquor of discharging for smoke gas treatment tower described in processed,
For removing the gypsum rotational flow station of described mixed waste liquor particle,
For described mixed waste liquor being added to coagulant and the sedimentation basin that carries out gravitational settling,
For described mixed waste liquor being carried out to the filter of fine filtering,
For regulating the pH regulating tank of described mixed waste liquor pH value,
Be used to described smoke gas treatment tower that the cyclic water tank of cycling use of water is provided,
For supplementing the supply tank of the described cyclic water tank water yield;
The mixed waste liquor delivery port conducting of described smoke gas treatment tower is connected on described dewaterer, the delivery port conducting of described dewaterer is connected on described gypsum rotational flow station, the delivery port conducting of described gypsum rotational flow station is connected on described sedimentation basin, the delivery port conducting of described sedimentation basin is connected on described filter, the delivery port conducting of described filter is connected on described cyclic water tank, the delivery port conducting of described supply tank is connected on described cyclic water tank, the conducting of described pH regulating tank is connected on described cyclic water tank, the delivery port conducting of described cyclic water tank is connected on the water nozzle of described smoke gas treatment tower, form water-flow circuit.
2. PM2.5 smoke gas treatment tower water circulation system as claimed in claim 1, it is characterized in that: described smoke gas treatment tower comprises for the electric field section of wet-esp with for the desulfurization section of wet desulphurization, described electric field section is arranged on the top of described smoke gas treatment tower, in described electric field section, be provided with wet electrical dust precipitator, described desulfurization section is arranged on the bottom of described smoke gas treatment tower, on described desulfurization section, be provided with limestone-gypsum slurries self-loopa spraying layer, the top of described electric field section is provided with the atomizer for the pole plate of described wet electrical dust precipitator is rinsed, described atomizer is connected with the delivery port conducting of described cyclic water tank.
3. PM2.5 smoke gas treatment tower water circulation system as claimed in claim 1, is characterized in that: centered by described sedimentation basin, intakes, and top water outlet, bottom weight is except the vertical CD pond of slurry.
4. PM2.5 smoke gas treatment tower water circulation system as claimed in claim 3, it is characterized in that: described sedimentation basin comprises pond body, central tube, grid, overflow plate, Rinsing Area, outlet pipe and discharge pipe, body top, described pond is provided with described grid, overflow plate, Rinsing Area and outlet pipe, described overflow plate is along the upper edge setting of described pond body, described Rinsing Area winding is in described overflow plate outside, described outlet pipe conducting is arranged on described Rinsing Area, described central tube is plugged on the body of described pond, water outlet is in described grid below, described discharge pipe is arranged on body bottom, described pond, described mixed waste liquor is imported in the body of described pond by described central tube, seeing through described grid and overflow plate enters in described Rinsing Area, by described outlet pipe, derived.
5. PM2.5 smoke gas treatment tower water circulation system as claimed in claim 1, is characterized in that: described filter is filer element type automatic backwashing filter.
6. a PM2.5 smoke gas treatment tower water circulation method, mixes the mixed waste liquor of discharging to the gypsum slurries of the flushing water of smoke gas treatment tower electric field section and desulfurization section and carries out cycle for the treatment of use, it is characterized in that: comprise the following steps:
Dehydration: described mixed waste liquor is delivered in gypsum dehydration band and is dewatered, and gypsum is transported between gypsum storage, the filtrate input next step after the press filtration of gypsum dehydration band;
Second particle thing is removed step: by described filtrate input gypsum rotational flow station, carry out the removal of second particle thing;
Settling step: by the liquid input sedimentation basin after second particle thing is removed step, the particle of liquid is removed in the effect bottom of gravity and inertia force lease making precipitation;
Essence filtration step: by the liquid input filter after settling step, carry out essence and filter, the solid particle in liquid more than 99% is removed, solid content≤50mg/L in water outlet;
PH value regulating step: in the liquid input cyclic water tank through smart filtration step, carry out pH adjusting;
Water supply step: the liquid in described cyclic water tank is inputted to the flushing water as electric field section in smoke gas treatment tower by circulating pump and recycle.
7. PM2.5 smoke gas treatment tower water circulation method as claimed in claim 6, is characterized in that: also comprise a watering step: by supply tank output clear water, added in described cyclic water tank.
8. PM2.5 smoke gas treatment tower water circulation method as claimed in claim 6, it is characterized in that: described smoke gas treatment tower comprises for the electric field section of wet-esp with for the desulfurization section of wet desulphurization, described electric field section is arranged on the top of described smoke gas treatment tower, in described electric field section, be provided with wet electrical dust precipitator, described desulfurization section is arranged on the bottom of described smoke gas treatment tower, on described desulfurization section, be provided with limestone-gypsum slurries self-loopa spraying layer, the top of described electric field section is provided with the atomizer for the pole plate of described wet electrical dust precipitator is rinsed, described atomizer is connected with the delivery port conducting of described cyclic water tank.
9. PM2.5 smoke gas treatment tower water circulation method as claimed in claim 6, it is characterized in that: centered by described sedimentation basin, intake, top water outlet, bottom weight is except the vertical CD pond of slurry, described sedimentation basin comprises pond body, central tube, grid, overflow plate, Rinsing Area, outlet pipe and discharge pipe, body top, described pond is provided with described grid, overflow plate, Rinsing Area and outlet pipe, described overflow plate is along the upper edge setting of described pond body, described Rinsing Area winding is in described overflow plate outside, described outlet pipe conducting is arranged on described Rinsing Area, described central tube is plugged on the body of described pond, water outlet is in described grid below, described discharge pipe is arranged on body bottom, described pond, liquid is imported in the body of described pond by described central tube, seeing through described grid and overflow plate enters in described Rinsing Area, by described outlet pipe, derived.
10. PM2.5 smoke gas treatment tower water circulation method as claimed in claim 6, is characterized in that: described filter is filer element type automatic backwashing filter.
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Cited By (13)
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| CN104056723A (en) * | 2014-06-06 | 2014-09-24 | 浙江南源环境工程技术有限公司 | Recirculating water treatment system for ash removal spraying water of wet electrostatic dust collector |
| CN104100986A (en) * | 2014-07-09 | 2014-10-15 | 华电电力科学研究院 | Wet-type electric precipitator and wet desulphurization joint water system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879406A (en) * | 2010-07-15 | 2010-11-10 | 煤炭工业济南设计研究院有限公司 | Dual-alkali flue gas desulfurization device and desulfurization method |
| CN102190390A (en) * | 2010-03-08 | 2011-09-21 | 张步芳 | Vanadium and titanium industrial wastewater treatment device |
| CN102716639A (en) * | 2012-07-20 | 2012-10-10 | 中电投远达环保工程有限公司 | High-efficiency wet-type electric dust removal and desulfuration system and process |
-
2013
- 2013-12-12 CN CN201310681078.XA patent/CN103691296B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190390A (en) * | 2010-03-08 | 2011-09-21 | 张步芳 | Vanadium and titanium industrial wastewater treatment device |
| CN101879406A (en) * | 2010-07-15 | 2010-11-10 | 煤炭工业济南设计研究院有限公司 | Dual-alkali flue gas desulfurization device and desulfurization method |
| CN102716639A (en) * | 2012-07-20 | 2012-10-10 | 中电投远达环保工程有限公司 | High-efficiency wet-type electric dust removal and desulfuration system and process |
Cited By (20)
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| CN104100986A (en) * | 2014-07-09 | 2014-10-15 | 华电电力科学研究院 | Wet-type electric precipitator and wet desulphurization joint water system |
| CN104259006A (en) * | 2014-09-19 | 2015-01-07 | 上海龙净环保科技工程有限公司 | Intermittent spray washing system and method for vertical flow wet-type electric precipitator |
| CN104607316A (en) * | 2015-01-17 | 2015-05-13 | 浙江中泰环保装备有限公司 | Wet type electric precipitator |
| CN105561770A (en) * | 2015-03-17 | 2016-05-11 | 孙厚杰 | Wet flue gas desulfurization absorption tower |
| CN104740992A (en) * | 2015-03-20 | 2015-07-01 | 凯天环保科技股份有限公司 | Flue gas deep desulfurization and dust removal device and method by use of carbide slag-gypsum method |
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| CN109906111B (en) * | 2016-09-02 | 2021-08-20 | 联邦科学与工业研究组织 | Combined acid gas capture and water extraction process |
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| CN107362648B (en) * | 2017-09-06 | 2023-06-02 | 山东大学 | Industrial air purification system |
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