CN105271459A - Waste-liquid polyphase separation apparatus and waste-liquid separation method - Google Patents
Waste-liquid polyphase separation apparatus and waste-liquid separation method Download PDFInfo
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Abstract
The invention discloses a waste-liquid polyphase separation apparatus and a waste-liquid separation method. The apparatus comprises atomization equipment, an atomization area, a static-pressure capacity expanding area, a sounding device, an ash outlet, an apparatus inlet and an apparatus outlet; the atomization equipment is disposed at the top of the atomization area below the apparatus inlet; the static-pressure capacity expanding area is disposed below the atomization area and is communicated with the atomization area, and possesses the circulation area larger than that of the atomization area; the sounding device is disposed at the atomization area; the ash outlet is disposed at the bottom of the static-pressure capacity expanding area; and the apparatus outlet is disposed at the later side of the static-pressure capacity expanding area. The separation method comprises atomizing a waste liquid through the atomization equipment, then vaporizing through a high-temperature air flow, so as to separating solid-phase particles and water in the waste liquid, realizing solid particle agglomeration through the sounding device, and realizing accelerated sinking of the solid-phase particles through the static-pressure capacity expanding area; and discharging the gas from the apparatus outlet, so as to realize the purpose of polyphase separation. The apparatus extremely well realizes separation of solid, liquid, gas and the like by employing the high-energy sounding device and unique static-pressure capacity expanding technology.
Description
Technical field
The present invention relates to a kind of waste liquid multi-phase separation process collection device and method, specifically a kind of waste liquid multi-phase separation device and separation method thereof that may be used for the association area such as thermoelectricity, iron and steel.
Background technology
Current, wastewater processing technology realizes mainly through the combination of physics, chemistry, biology or several method.Generally, utilize merely physical method to carry out wastewater treatment and do not reach correlative link guaranteed request, the Combination of Methods of needs chemistry or biological treatment uses, but biological, chemical treatment method general technology more complicated, as bioremediation needs to carry out microorganism culturing, chemical treatment method needs constantly to add pharmaceutical chemicals.In recent years, for specific wastewater treatments such as some such as power plant desulfurization waste water, on the basis of chemical treatment method, the principle of work that part professional and technical personnel is fixed with harmful substances based on heating power evaporation in conjunction with electric precipitator develops a kind of waste water zero discharge device, and this kind of device mainly exists the difference in method in the pre-process links such as filtration, atomization.
Chinese patent CN201410397989.4 discloses a kind of device of desulfurization wastewater zero release, is made up of desulphurization system, two-section type waste-water vortex device, ultrasonic wave atomizing nozzle, fly-ash separator, waste water pump and waste water transferpump; Described two-section type waste-water vortex device comprises the sub-body of eddy flow, upflow tube and filter screen; Described cyclone inlets is all connected with desulphurization system with underflow opening, and described overflow port is connected with ultrasonic wave atomizing nozzle; Described fly-ash separator is provided with inlet flue duct; Described ultrasonic wave atomizing nozzle is connected with the inlet flue duct of fly-ash separator, and described fly-ash separator is connected with desulphurization system.Reasonable in design of the present invention, arranges outward without waste water, saves water resources, saves space, saves cost, effectively can remove the inorganic ion in waste water and heavy metal ion.
Chinese patent CN201110076844.0 discloses a kind of zero emission treatment of desulfured waste water, comprise the following steps: 1) desulfurization wastewater after thionizer desulfurization is entered preliminary sedimentation tank, through initial gross separation in preliminary sedimentation tank, isolated upper clear supernate is transported in Buffer Pool through slush pump; 2) by the desulfurization wastewater in Buffer Pool successively by atomisation unit and electrostatic precipitator; 3) waste water larger for preliminary sedimentation tank bottom solid content is transported to sludge buffer pool through sludge pump, the waste water that the solid content in sludge buffer pool is larger is transported to pressure filter through another sludge pump; 4) waste water after filtration is sent back in preliminary sedimentation tank through slush pump; Meanwhile, the invention also discloses a kind of system, zero discharge treatment can be carried out by desulfurization wastewater very easily by method of the present invention, and technique is simple, save manpower; System architecture of the present invention is compact, and method is implemented simple, and save energy, improves the quality of fly-ash separator inlet flue gas, and can realize desulfurization wastewater zero release truly, has promotional value.
But the flue of above-mentioned patented technology before electrostatic precipitator all can be continual by causing ash deposit and slag buildup to block because of the salinity after crystallization in desulfurization wastewater, drafting efficiency is caused to reduce, the exhaust gas volumn passed through reduces, for keeping boiler load, increase blower fan certainly will be caused to exert oneself and blower fan electric current, improve boiler controller system energy consumption, serious dust deposit in flue blocking more can cause the passive blowing out of boiler controller system; In addition, electrostatic precipitator is also because need the salinity additionally removed in a large number in desulfurization wastewater after crystallization to aggravate the ash deposit and slag buildup of electrostatic precipitator polar curve, pole plate, electrostatic precipitator current consumption is caused to increase and efficiency of dust collection reduction, the ash deposit and slag buildup of especially severe can cause electrostatic precipitator dedusting nearly unavailable, not removed flue dust can by causing environmental pollution in chimney discharge beyond standards to air, and water pollutions is transformed to topsoil thus.
Summary of the invention
The object of the invention is to provide a kind of waste liquid multi-phase separation device and separation method thereof to overcome above the deficiencies in the prior art, and this device does not need to carry out removing of crystallization salinity in waste liquid by electrostatic precipitator just can realize Zero discharge process.This device is condensed into wrap by using the static pressure dilatation design of high-octane sound-producing device, uniqueness to solve the particulate of solid-liquid-gas mixture after realizing solid-liquid separation by high temperature evaporation under acoustic wave action, produce stall effect after arriving static pressure dilatation district and then accelerate to sink to discharging, further enhancing the separating effect of solid-liquid-gas etc.
Technical scheme of the present invention is as follows:
A kind of waste liquid multi-phase separation device, this device comprises atomising unit, range of atomization, static pressure dilatation district, sound-producing device, ash output hole, and device portal and device export; Wherein atomising unit is arranged at the top, range of atomization below device portal, static pressure dilatation district to be arranged at below range of atomization and to communicate with range of atomization, and the circulation area in static pressure dilatation district is greater than the circulation area of range of atomization, sound-producing device is arranged at range of atomization, ash output hole is arranged at bottom static pressure dilatation district, and device outlet is arranged at the side in static pressure dilatation district.
Described waste liquid multi-phase separation device, atomising unit comprises high-pressure pump, air compressor machine, atomization conduit and atomizing nozzle.
Described waste liquid multi-phase separation device, sound-producing device comprises acoustic generator, acoustic conducting pipe and Controlling System.
Described waste liquid multi-phase separation device, the acoustic conducting pipe of sound-producing device is arranged on the inwall of range of atomization, and acoustic conducting pipe outlet is inner towards range of atomization, and the quantity that sound-producing device is arranged is one or more.
Described waste liquid multi-phase separation device, the upper space in static pressure dilatation district is large, and lower space reduces gradually.
Described waste liquid multi-phase separation device, static pressure dilatation district is back taper.
Described waste liquid multi-phase separation device, device exit is provided with sound reflection homogenizing plate.
Described waste liquid multi-phase separation device, sound reflection homogenizing plate is made up of the bilayer of upper part perforate, lower part not perforate or multi-ply wood, there is gap between each laminate, and hole adopts dislocation arrangement at different plate.
Described waste liquid multi-phase separation device, is connected with ash discharge holder below ash output hole.
Described waste liquid multi-phase separation device, ash discharge holder by upper and lower valve and between bulk cement storage tank form.
Waste liquid multi-phase separation device described in above any one is separated the method for waste liquid, comprises the following steps:
(1) waste liquid is entered range of atomization after atomising unit atomization, waste liquid is atomized into vaporific solid-liquid mixing small droplets;
(2) high temperature gas flow is passed at device portal place, make to be atomized moisture in rear waste liquid by thermal evaporation, the high strong sound wave strong disturbance that the liquid mist that evaporates of the salinity crystal fine grain in waste water, the contaminant particles in gas and having little time on a small quantity is sent by sound-producing device when air-flow advances and constantly condense the larger reunion wrap of formation;
(3) when larger reunion wrap arrives static pressure dilatation district, produce stall sinking because circulation area increases suddenly, simultaneously under gravitational synergy, accelerate to drop at ash output hole;
(4) waste liquid evaporated forms water vapour with comparatively clean air-flow by evenly discharging from device outlet after sound reflection homogenizing plate.
The principle of design of waste liquid multi-phase separation device provided by the invention is as follows:
1, waste liquid is atomized through atomising unit, waste liquid becomes vaporific solid-liquid mixing small droplets, thus can realize fully contacting with high temperature gas flow, after solid-liquid mixing small droplets makes full use of air-flow heat, clean moist part is pulled away by high temperature evaporation and along with air-flow, remaining salinity crystallisate, achieves solid-liquid-gas and is separated.
2, sound is a kind of energy, and the vibration in air can produce sound, and sound can make again air produce vibration.The energy that the high strong sound wave that sound pressure level is very high produces is stronger, and the vibration of air can be stronger.Utilize the acoustic pressure reactive force that the strong sound wave of certain frequency produces, the a small amount of liquid mist droplet having little time to evaporate originally mutually can't touch can be made, in waste liquid, moisture is evaporated contaminant particles in rear remaining salinity particulate and flue gas flow due to judder and mutually collides, and mutually parcel is condensed into larger containing wet granulation, to be affected by gravity factor by these larger particulate matter itself again and drop to ash output hole, and then collect further, in thermal power plant, can effectively avoid at pipeline generation dust stratification stopping state during Steel Plant's application, greatly alleviate electrostatic precipitator polar curve, pole plate ash deposit and slag buildup situation, reduce boiler controller system energy consumption, significantly improve electrostatic precipitator efficiency of dust collection, reduce and comprise PM10, PM2.5 is in the discharge of interior relevant atmospheric pollutent.
3, for improving the settling efficiency through the agglomerating macrobead thing of sonic agglomeration, static pressure dilatation district is set, play current stabilization, current-sharing, reduce airstream vibration, eliminate eddy effect, when sweeping along the air-flow of particulate matter to arrive static pressure dilatation district, cause speed bust to enter stall conditions because circulation area increases suddenly, the particulate matter of conglomerate just also almost all can settle down in this delay and fall into ash output hole.
Compared with prior art, beneficial effect of the present invention is:
1, the present invention can carry out multi-phase separation collection to the waste water of association area very easily, can be used for the realization of Zero discharge process, and technique is simple, does not need to use any pharmaceutical chemicals, saves manpower.
2, the present invention can make full use of power-plant flue gas waste heat when treatment of Power waste liquid, is substantially evaporated the waste water of heavily contaminated, realizes solid-liquid, solid and gas is separated, and improves the dustiness entering flue gas before fly-ash separator, is conducive to the dust removing effects improving fly-ash separator.
3, in existing waste water zero-discharge technology, after the salinity crystallisate obtained by high temperature evaporation realizes solid-liquid separation, salinity crystallisate arrives electrostatic precipitator rely on electrostatic precipitator to remove salinity crystallisate by pipeline along with flue gas flow, cause dust deposited in pipeline fouling and clogging and aggravate electrostatic precipitator ash deposit and slag buildup, causing the increase of boiler controller system energy consumption, passive blowing out, atmospheric polluting material discharge beyond standards etc. to be difficult to the problem overcome.In the present invention, the salinity crystal fine grain in waste water can be made, contaminant particles in flue gas and the liquid mist having little time on a small quantity to evaporate promote particle coagulation at high strong sound wave, static pressure dilatation causes solid particulate stall to be sunk, under the three aspect factor comprehensive actions such as terrestrial gravitation, salinity crystallisate in waste water and the impurity in flue gas and a small amount of liquid mist form reunion wrap and drop at ash output hole, and then carry out collection and outer row further, such design can effectively be avoided at pipeline generation dust stratification stopping state, in addition, no longer electrostatic precipitator is entered because salinity crystallisate is follow-up, and the impurity entering electrostatic precipitator in flue gas also greatly reduces, electrostatic precipitator is because load of dust remove significantly reduces and causes polar curve, pole plate ash deposit and slag buildup situation is alleviated greatly, boiler controller system energy consumption reduces, passive blowing out situation has not existed, atmospheric polluting material is discharge beyond standards no longer.
4, system architecture of the present invention is compact, and method is implemented simple, and the waste liquid multi-phase separation that can realize truly and wastewater zero discharge, not only environmental protection but also safety, have promotional value.
5, present invention employs sound-producing device, range of atomization and static pressure dilatation district combine and sound reflection homogenizing plate three kinds designs combination to play synergy, send Frequency Adjustable height strong sound wave by sound-producing device and promote particle coagulation, range of atomization and static pressure dilatation district combine and cause the solid wrap after condensing produce stall and accelerate, high strong sound wave high-efficiency reflective is returned by sound reflection homogenizing plate, reduce acoustic wave energy loss, improve acoustic wave energy utilization ratio, thus enhancement is in the high-strength acoustic wave energy of particle coagulation, improve particle coagulation effect, the homogenizing plate of sound reflection simultaneously can make expellant gas reach equal fluidisation, gas can evenly be discharged from device outlet, if connect gas processing device in device exit, just well can ensure that gas enters treatment facility with the form of current-sharing, thus avoid the fouling aggravation etc. produced because of the ununiformity of gas distribution.
Accompanying drawing explanation
Fig. 1 is the waste liquid multi-phase separation device schematic diagram described in the embodiment of the present invention 1;
Fig. 2 is the waste liquid multi-phase separation device schematic diagram described in the embodiment of the present invention 2;
Fig. 3 is the waste liquid multi-phase separation device schematic diagram described in the embodiment of the present invention 3;
In above Fig. 1-Fig. 3,1 is atomising unit, and 11 is high-pressure pump, and 12 is air compressor machine, and 13 is atomization conduit, 14 is atomizing nozzle, and 2 is range of atomization, and 3 is static pressure dilatation district, and 4 is sound-producing device, and 5 is ash output hole, 6 is device portal, and 7 is device outlet, and 8 is sound reflection homogenizing plate, and 9 is ash discharge holder.
Embodiment:
Below in conjunction with accompanying drawing, waste liquid multi-phase separation device provided by the invention is further described.
Embodiment 1
As shown in Figure 1, be the waste liquid multi-phase separation device schematic diagram that the present embodiment provides, comprise atomising unit 1, range of atomization 2, static pressure dilatation district 3, sound-producing device 4, ash output hole 5, device portal 6 and device export 7; Wherein atomising unit 1 is arranged at the top, range of atomization 2 below device portal 6, static pressure dilatation district 3 to be arranged at below range of atomization 2 and to communicate with range of atomization 2, and the circulation area in static pressure dilatation district 3 is greater than the circulation area of range of atomization 2, sound-producing device 4 is arranged at range of atomization 2, ash output hole 5 is arranged at bottom static pressure dilatation district 3, and device outlet 7 is arranged at the side in static pressure dilatation district 3.
Solid-liquid-gas three phase can be separated by device provided by the invention well.In concrete use procedure, dissolving or the liquid phase (waste liquid) with salt or other solvable or insoluble impurity are atomized by atomising unit 1, the small droplets that atomization is formed enters in range of atomization 2, sunk by self gravitation, and hot gas now can be passed at device portal 6 place, moisture in small droplets after atomization is evaporated rapidly formation water vapor, and salt in little liquid or other evaporate the material do not fallen and separate out, form the small particle of salt crystalloid or other materials.Sound-producing device now by being arranged on range of atomization sends high strong sound wave, salt crystalloid and other small particles are united rapidly and forms mutual wrap, wrap increases due to weight thus accelerates, when wrap sinks down into static pressure dilatation district 3, because the ingress circulation area in static pressure dilatation district 3 increases suddenly, make wrap produce stall event, and then accelerate and sink down into ash output hole 5, remaining comparatively clean gas is discharged from device outlet 7.Utilize above device and separating technology, well the solid-liquid-gas three phase that will be separated effectively can be separated, it make use of the phase in version of material and the condensation principle of sound wave dexterously, and the stall event utilizing the transformation of material due to different spaces in sinking watching under terrestrial attraction effect to cause impel cohesion after wrap sink to bottom of device faster.Utilize above device, the heterogeneous body needing solid-liquid-gas to be separated can be processed better, and desirable separating effect can be reached.
Embodiment 2
As shown in Figure 2, for the further improvement on embodiment 1 basis, wherein atomising unit 1 comprises high-pressure pump 11, air compressor machine 12, atomization conduit 13 and atomizing nozzle 14, can be good at playing atomizing effect, sound-producing device 4 comprises acoustic generator, acoustic conducting pipe and Controlling System, Controlling System can control the sound wave that acoustic generator sends different frequency range, sound wave is outwards sent by acoustic conducting pipe, acoustic conducting pipe is arranged at the inwall of range of atomization 2, and acoustic conducting pipe outlet is inner towards range of atomization 2, this ensure that and can be applied on atomization small droplets to greatest extent after sound wave sends, produce the effect of cohesion.It is large that static pressure dilatation district 3 is set to upper space, and lower space reduces gradually, is especially set as back taper, the wrap formed can be made so promptly to sink and slide to the ash output hole 5 of bottom, export 7 places at device and be provided with sound reflection homogenizing plate 8, sound reflection homogenizing plate 8 is by upper part perforate, the bilayer of lower part not perforate or multi-ply wood composition, gap is there is between each laminate, hole adopts dislocation arrangement at different plate, effectively acoustic reflection can be gone back, at utmost decrease the loss of acoustic energy, and comparatively clean gas passes through to define good current-sharing gas from sound reflection homogenizing plate 8, can discharge uniformly, and export at device the treatment facility that 7 places can connect gas, can be good at like this ensureing that gas enters this equipment with the form of current-sharing, thus avoid and produce fouling aggravation etc. because of the ununiformity of gas distribution.
Embodiment 3
As shown in Figure 3, for the waste liquid multi-phase separation device schematic diagram that the present embodiment provides, for the another improvement on embodiment 2 basis, wherein below ash output hole 5, be connected with ash discharge holder 9, ash discharge holder 9 by upper and lower valve and between bulk cement storage tank form, folding control can be carried out like this to ash output hole 5, first valve can be opened, black dirt is made to enter in bulk cement storage tank, when bulk cement storage tank is filled, valve is closed in pass, opens lower valve and is released by the black dirt in bulk cement storage tank and transport, and can continue so again storage ash.
Embodiment 4
Adopt waste liquid multi-phase separation device provided by the invention for the filtered desulfurization wastewater of certain power plant 1000MW unit, the operation scheme of this device is described, wherein connect flue at device portal place, connect electrostatic precipitator in device exit.Detailed process is as follows:
(1) filtered desulfurization wastewater is transported to atomizing nozzle by high-pressure pump by atomization conduit, air compressor machine is connected with atomizing nozzle, air compressor machine produces a large amount of pressurized air, and under the acting in conjunction of high-pressure pump and air compressor machine, waste water is atomized the solid-liquid mixing small droplets that nozzle atomization nebulizes.
(2) vaporific solid-liquid mixing small droplets enters range of atomization, high-temperature flue gas stream is passed at device portal place, make to be atomized moisture in rear waste water by heating evaporation, the high strong sound wave strong disturbance that the liquid mist that evaporates of the salinity crystal fine grain in waste water, the contaminant particles in flue gas and having little time on a small quantity is sent by the sound-producing device that two are fixed on range of atomization wallboard when flue gas flow advances and constantly condense the larger reunion wrap of formation.Sound-producing device is made up of Frequency Adjustable high-intensity sound wave, acoustic conducting pipe and Controlling System, and acoustic conducting pipe to extend on range of atomization wallboard and arranged in range of atomization by voice directions.Every platform sound-producing device institute sounding power regulates arbitrarily between 10000-30000 watt, and audible frequency regulates arbitrarily between 30-300Hz.
(3) when the larger reunion wrap condensed arrives static pressure dilatation district, produce stall sinking because circulation area increases suddenly, simultaneously under the synergy of the factors such as terrestrial gravitation, accelerate to drop at ash output hole.
(4) waste water evaporated forms water vapour with comparatively clean flue gas flow by evenly arriving electrostatic precipitator after sound reflection homogenizing plate, the high strong sound wave that sound-producing device sends is reflected to strengthen the energy of high strong sound wave by sound reflection homogenizing plate, reduce the loss of acoustic wave energy.
(5) ash output hole connects ash discharge holder, ash discharge holder by upper and lower valve and between bulk cement storage tank form, when the lime-ash precipitated is too much, open the upper valve of ash discharge holder, the lime-ash in ash output hole drops in bulk cement storage tank; When bulk cement storage tank is filled with lime-ash, closes the upper valve of ash discharge holder, open the lower valve of ash discharge holder, lime-ash is arranged and transports outside realizing.
Claims (10)
1. a waste liquid multi-phase separation device, is characterized in that, this device comprises atomising unit (1), range of atomization (2), static pressure dilatation district (3), sound-producing device (4), ash output hole (5), and device portal (6) and device export (7); Wherein atomising unit (1) is arranged at range of atomization (2) top of device portal (6) below, static pressure dilatation district (3) is arranged at below, range of atomization (2) and communicates with range of atomization (2), and the circulation area in static pressure dilatation district (3) is greater than the circulation area of range of atomization (2), sound-producing device (4) is arranged at range of atomization (2), ash output hole (5) is arranged at bottom, static pressure dilatation district (3), and device outlet (7) is arranged at the side in static pressure dilatation district (3).
2. waste liquid multi-phase separation device according to claim 1, is characterized in that, atomising unit (1) comprises high-pressure pump (11), air compressor machine (12), atomization conduit (13) and atomizing nozzle (14).
3. waste liquid multi-phase separation device according to claim 1, is characterized in that, sound-producing device (4) comprises acoustic generator, acoustic conducting pipe and Controlling System.
4. waste liquid multi-phase separation device according to claim 3, it is characterized in that, the acoustic conducting pipe of sound-producing device (4) is arranged on the inwall of range of atomization (2), and acoustic conducting pipe outlet is inner towards range of atomization (2), and the quantity that sound-producing device (4) is arranged is one or more.
5. waste liquid multi-phase separation device according to claim 1, is characterized in that, the upper space in static pressure dilatation district (3) is large, and lower space reduces gradually.
6. waste liquid multi-phase separation device according to claim 1, is characterized in that, device outlet (7) place is provided with sound reflection homogenizing plate (8).
7. waste liquid multi-phase separation device according to claim 6, is characterized in that, sound reflection homogenizing plate (8) is made up of the bilayer of upper part perforate, lower part not perforate or multi-ply wood, there is gap between each laminate, and hole adopts dislocation arrangement at different plate.
8. waste liquid multi-phase separation device according to claim 1, is characterized in that, ash output hole (5) is connected with ash discharge holder (9) below.
9. waste liquid multi-phase separation device according to claim 8, is characterized in that, ash discharge holder (9) by upper and lower valve and between bulk cement storage tank form.
10. the waste liquid multi-phase separation device described in any one of claim 1-9 is separated a method for waste liquid, it is characterized in that, comprises the following steps:
(1) waste liquid is entered range of atomization after atomising unit atomization, waste liquid is atomized into vaporific solid-liquid mixing small droplets;
(2) high temperature gas flow is passed at device portal place, make to be atomized moisture in rear waste liquid by thermal evaporation, the high strong sound wave strong disturbance that the liquid mist that evaporates of the salinity crystal fine grain in waste water, the contaminant particles in gas and having little time on a small quantity is sent by sound-producing device when air-flow advances and constantly condense the larger reunion wrap of formation;
(3) when larger reunion wrap arrives static pressure dilatation district, produce stall sinking because circulation area increases suddenly, simultaneously under gravitational synergy, accelerate to drop at ash output hole;
(4) waste liquid evaporated forms water vapour with comparatively clean air-flow by evenly discharging from device outlet after sound reflection homogenizing plate.
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| CN105776584A (en) * | 2016-05-17 | 2016-07-20 | 唐山三友化工股份有限公司 | Comprehensive device for separating, washing and dechlorinating alkali dreg waste liquid and application of comprehensive device |
| CN107140777A (en) * | 2017-06-27 | 2017-09-08 | 南京常荣声学股份有限公司 | A kind of desulfurization wastewater zero discharge treatment device and its processing method |
| CN110182880A (en) * | 2019-05-21 | 2019-08-30 | 浙江浙能技术研究院有限公司 | A kind of high slat-containing wastewater flue gas drying processing unit |
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| CN105271459B (en) | 2018-02-06 |
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