CN105582766A - Apparatus for purifying tail gas from thermal power plant - Google Patents
Apparatus for purifying tail gas from thermal power plant Download PDFInfo
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- CN105582766A CN105582766A CN201410639495.2A CN201410639495A CN105582766A CN 105582766 A CN105582766 A CN 105582766A CN 201410639495 A CN201410639495 A CN 201410639495A CN 105582766 A CN105582766 A CN 105582766A
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Abstract
An apparatus for purifying tail gas from thermal power plants is characterized by including a coolant flowing path and a tail gas flowing path and also including a separation part which is used for separating the coolant flowing path from a tail gas flowing path and is used for heat exchange between the coolant flowing path and the tail gas flowing path. The separation part has a tail gas contact surface for collecting dust and/or fog from the tail gas. A coolant flows in the coolant flowing path so that condensed water separated from hot tail gas can attached to the tail gas contact surface uniformly to form a uniform and stable water film; on one hand, formation of concentrated sulfuric acid on the dust collection plate is avoided and meanwhile, the liquid film flows downwardly under the effect of gravity, thereby timely cleaning the sulfuric acid on the dust collection plate; and on the other hand, the water film has significant effects of intercepting fog drops and capturing the dust.
Description
Technical field
The present invention relates to air purification field, relate in particular to a kind of for purifying the device of thermal power plant tail gas.
Background technology
In prior art, effect is mainly wet cottrell for the device that purifies thermal power plant tail gas preferably,Its process of gathering dust comprise to dust and droplet carry out charged, collect and three processes of cleaning, therefore correspondingly a set of completeWet cottrell comprise dust and the charged system of droplet, gathering system and cleaning system. Wet cottrellIn metal discharge line under the effect of DC high voltage, by the ionization of its ambient gas, make dust droplet particle surface lotusElectricity. Charged particle moves under the effect of electric field force on dust collecting pole plate, and is deposited on dust collecting pole plate. Many traditionallyAdopt spray water flow to flow down from collecting plate top, on collecting plate, form current, by the dust granules band on dust collecting pole plateWalk.
Existing wet cottrell can be divided into two classes, and a class is that positive plate (being dust collection plate) adopts flatMetal polar plate, the positive plate layout that is parallel to each other separated by a distance arranges discharge electrode rod, air-flow water between two-plateAdvection influent stream goes out, the advantage that the wet cottrell of this type has is that metal polar plate, mechanical strength are high, good rigidly,Not yielding, high temperature resistant, die opening is guaranteed, electric field good stability. Working voltage is higher, as long as dedusting area footEnough just can ensure to reach greatly dust removing effects, and can series multistage electric field, multilevel design reaches efficiently and removesThe effect of dirt.
An other class is that positive plate adopts cellular or tubulose, should be called more precisely dust collection cylinder, surge drumForm have the various shapes such as cylinder, four directions cylinder, positive hexagonal cylinder. Flue gas upper entering and lower leaving, or bottom in and top out, flue gasFlow through along anode canister inner chamber. Anode adopts electro-conductive glass Steel material, because being added with carbon fiber felt, stone in glass-reinforced plastic materialThe conductive materials such as ink powder, self can conduct electricity. Negative electrode adopts acupuncture cathode line, is positioned at the center of each anode canister, the moonPolar curve material adopts titanium alloy, super-duplex stainless steel; Configuration water spray soot cleaning system, need to have a power failure and rinse one every dayInferiorly clear up isolated dust.
Summary of the invention
By practical application and comparison, find that the shortcoming of the wet cottrell of above two types is: 1, drenchingWash current skewness in process, cannot form uniform moisture film, cause forming dry wet interface on positive plate, powderThe service life of dirt collecting board/surge drum is short; 2, the Interception Technology measure of dust and droplet is single, only by static oneTechnical measures; 3, the gas flow rate allowing is lower, is approximately 1～3m/s, and then causes existing deduster space requirementHuge, be unfavorable for building complete desulphurization system technology upgrading transformation.
More specifically, thermal power plant tail gas contains a large amount of SO2, in vent gas treatment process, a part of SO2OxidizedFor SO3, can be combined by the steam in tail gas, generate H2SO4. The H forming2SO4Can be attached with the dust in tail gas and dropletOn dust collection plate/surge drum. Traditional wet cottrell adopt the mode of drip washing remove dust collection plate/Dust on surge drum and droplet. Owing to cannot forming uniform and stable moisture film, can shape on dust collection plate/surge drumBecome dry wet interface, therefore, on dust collection plate/surge drum, can adhere to the dense H that cannot be rinsed in time2SO4, logicalHave high-tension electricity and temperature greatly in 50 DEG C of situations, dust collection plate/surge drum very easily corrodes. For extending dedustingIn the service life of device, collecting board/surge drum need to use expensive strong corrosion resistant material conventionally, causes cleaning of off-gasInstallation cost is high.
For addressing the above problem, the invention provides a kind of for purifying the device of thermal power plant tail gas, described deviceHave cooling thing flow channel and exhaust gas flow passage, described device also comprises for cooling thing flow channel described in intervalWith described exhaust gas flow passage and at described cooling thing flow channel and described exhaust gas flow exchanged between channels heatDistance member, described distance member has the tail gas contact-making surface for collecting described tail gas dirt and/or mist.
In a detailed description of the invention, the quantity of described distance member is multiple, and forms the interval parts of multiple repetitionsPart group, described distance member group comprises the first distance member and the second distance member, described cooling thing flow channel is by instituteState the first distance member and described the second distance member and limit and form, described exhaust gas flow passage is by described in adjacent twoDistance member group limits and forms.
Further, described the first distance member and described the second distance member are formed in one, or described interval partsPart group also comprises the connector for connecting described the first distance member and described the second distance member.
Further, described the first distance member and described the second distance member are tabular.
Further, described distance member group is hollow sheeting, and described cooling thing flow channel is by the hollow of described hollow sheetingStructure qualification forms, and described exhaust gas flow passage is limited and formed by two adjacent described hollow sheetings.
Further, adjacent two described hollow sheetings are respectively with opposite charges, and the spacing of adjacent two described hollow sheetings is50～300mm; Or between adjacent two described hollow sheetings, be also provided with electrostatic generator, described hollow strip justElectric charge, the spacing of adjacent two described hollow sheetings is 100～400mm.
Further, described hollow sheeting be shaped as corrugated, be preferably sine wave shape.
Further, on described hollow sheeting, comprise one or more hook portions.
Further, ignore consumption and the utilization rate of the fluid in hollow sheeting, hollow is tabular can be also entiretyPipe or other odd-shaped cross section pipes, such as droplet-shaped.
In another detailed description of the invention, the quantity of described distance member is multiple, and described distance member is tubulose, instituteStating exhaust gas flow passage is limited and is formed by the inwall of distance member.
Further, the outer cover of described distance member has the second tubular part, and described cooling thing flow channel is by describedThe inwall of the outer wall of distance member and described the second tubular part limits and forms.
Further, described distance member and described the second tubular part are formed in one.
Further, described device also comprises the connector for connecting described distance member and described the second tubular part.
Further, the cross section of described distance member is triangle, polygon, circle or oval, described secondThe cross section of tubular part is triangle, polygon, circle or oval; Preferably, described distance member is transversalFace is hexagon, and the cross section of described the second tubular part is hexagon.
Further, described device also comprises the electrostatic generator that is positioned at described distance member, described distance memberPositively charged.
Further, described cooling thing is cooling fluid or refrigerating gas, and wherein cooling fluid is preferably water, more preferably workIndustry cooling water.
Further, the temperature of described cooling thing is 3-20 DEG C.
It is a kind of for purifying the system of thermal power plant tail gas that the present invention also provides, and described system comprises as aboveDevice.
Further, described system comprise be located at described device upstream position one-level or multistage be selected from comprise flatOne or more in the group of demister, roof type demister, tubular demister and horizontal gas flow demister composition.
Further, described system also comprises demister, and described demister is located at described for purifying thermal power generationThe downstream position of the device of factory's tail gas;
Further, described demister comprises multiple hollow sheetings, and the hollow structure of described hollow sheeting defines heating thingFlow channel, wherein said heating thing is hot water, the temperature of described heating thing is >=50 DEG C.
It is a kind of for purifying the method for thermal power plant tail gas that the present invention also provides, and described method comprises the steps:
Tail gas contact-making surface is provided, makes described tail gas stream cross described tail gas contact-making surface, and make described tail gas contact-making surface collect instituteState dirt and/or mist in tail gas;
Cooling described tail gas contact-making surface makes to form moisture film on described tail gas contact-making surface;
Rinse dirt and/or the mist on described tail gas contact-making surface, collected.
Further, described method also comprises:
Mobile cooling thing is provided;
Provide distance member so that described tail gas contact-making surface to be provided, and by spaced apart to described cooling thing and described tail gas.
Further, described cooling thing is industrial colling.
The tail gas of mentioning in the present invention refer in thermal power plant, discharge pass through traditional Flat defroster, roofThe tail gas that formula demister, tubular demister or horizontal gas flow demister or its combined treatment are crossed.
The moisture film of mentioning in the present invention refers to that the cooling thing in hot exhaust gas and cooling thing flow channel carries out heat exchange, formsBe attached to the condensed water on tail gas contact-making surface.
Compared with prior art, the present invention has following beneficial effect:
1, stream has cooling thing in cooling thing flow channel, makes condensed water that hot exhaust gas is separated out be attached to equably tail gas and connectsOn the face of touching, form even, stable moisture film: on the one hand, avoid forming dense H on collecting plate2SO4, meanwhile, liquidFilm flows downward under Action of Gravity Field, thereby cleans the H being attached on collecting plate in time2SO4; On the other hand, moisture film pairThe interception of droplet and the seizure of dust have the effect of highly significant.
2, by electrostatic precipitation demist technology, liquid film dedusting demist technology and traditional corrugated plate dst curved channel demist skillArt organically combines, and has significantly improved the interception separative efficiency of dust and droplet.
3, even, stable moisture film, can effectively prevent back corona phenomenon.
4, water-saving effect. Not only do not need extra flushing water, but also from hot exhaust gas, collect condensed water, these are coldSolidifying water plays absorption dust and droplet effect, and under Action of Gravity Field, condensed water is dirty and take away the dust under interception simultaneously,Stop the obstruction of collecting board. Condensed water leaves collecting board can also serve as his use after treatment, such as absorptionThe flushing water of demister in tower.
5,, because hollow sheeting is corrugated, can bear higher gas flow for the device that purifies thermal power plant tail gasSpeed, therefore will significantly dwindle for the volume of the device that purifies thermal power plant tail gas, reduce the space requirement of equipment,This upgrading to the desulfurizer that completes construction is vital.
6, the demister configuring for purifying the device downstream position of thermal power plant tail gas, it is designed to hollow structure,Interior stream has hot water, and demister plays the effect of heater, by improving the exhaust temperature of tail gas, will effectively prevent chimneyRain phenomenon.
Below with reference to accompanying drawing, the technique effect of design of the present invention, concrete structure and generation is described further, withMake those skilled in the art understand fully object of the present invention, feature and effect.
Brief description of the drawings
Fig. 1 is the structural representation of the hollow sheeting of the present invention's one specific embodiment.
Fig. 2 be the present invention's one specific embodiment for purifying the structure cutaway view of device of thermal power plant tail gas, itsMiddle electrostatic generator is between adjacent two hollow sheetings as shown in Figure 1.
Fig. 3 be the present invention's one specific embodiment for purifying the structure cutaway view of device of thermal power plant tail gas, itsMiddle electrostatic generator is positioned at the upstream position of hollow sheeting as shown in Figure 1.
Fig. 4 be the present invention's one specific embodiment for purifying the structure cutaway view of device of thermal power plant tail gas, itsIn this device do not there is electrostatic generator.
Fig. 5 is the structural representation of the hollow sheeting of another specific embodiment of the present invention, and wherein this hollow sheeting has 1.5Sine wave shape.
Fig. 6 is the structural representation of the hollow sheeting of another specific embodiment of the present invention, and wherein this hollow sheeting has 0.5Sine wave shape.
Fig. 7 be another specific embodiment of the present invention for purifying the structure cutaway view of device of thermal power plant tail gas,Wherein electrostatic generator is between adjacent two hollow sheetings as shown in Figure 5.
Fig. 8 be the present invention's one specific embodiment for purifying the structure cutaway view of device of thermal power plant tail gas, itsMiddle electrostatic generator is positioned at the upstream position of hollow sheeting as shown in Figure 5.
Fig. 9 be another specific embodiment of the present invention for purifying the structure cutaway view of device of thermal power plant tail gas,Wherein this device does not have electrostatic generator.
Figure 10 be another specific embodiment of the present invention for purifying the structure cutaway view of device of thermal power plant tail gas,Wherein electrostatic generator is positioned at the upstream position of hollow sheeting, and on hollow sheeting, has hook portion.
Figure 11 be the present invention's one specific embodiment for purifying the structure cutaway view of device of thermal power plant tail gas, itsMiddle electrostatic generator is positioned at the upstream position of hollow sheeting, and on hollow sheeting, has hook portion.
Figure 12 be another specific embodiment of the present invention for purifying the structure cutaway view of device of thermal power plant tail gas,Wherein this device does not have electrostatic generator, and on hollow sheeting, has hook portion.
Figure 13 is the distance member of the another specific embodiment of the present invention and the structural representation of the second tubular part, in the middle of itBe regular hexagon every the cross section of parts and the second tubular part.
Figure 14 is the cutaway view of distance member and the second tubular part in Figure 13.
Figure 15 is the distance member of the another specific embodiment of the present invention and the structural representation of the second tubular part, in the middle of itBe circular every the cross section of parts and the second tubular part.
Figure 16 is the cutaway view of distance member and the second tubular part in Figure 15.
Figure 17 be the another specific embodiment of the present invention for purifying the structure cutaway view of device of thermal power plant tail gas,Wherein in distance member as shown in figure 13, there is electrostatic generator.
Figure 18 be the another specific embodiment of the present invention for purifying the structure cutaway view of device of thermal power plant tail gas,Wherein in distance member as shown in figure 15, there is electrostatic generator.
Figure 19 be the another specific embodiment of the present invention for purifying the structure cutaway view of device of thermal power plant tail gas,Wherein in this device distance member as shown in figure 13, do not there is electrostatic generator.
Figure 20 be the another specific embodiment of the present invention for purifying the structure cutaway view of device of thermal power plant tail gas,Wherein in this device distance member as shown in figure 15, do not there is electrostatic generator.
Detailed description of the invention
Embodiment 1
Fig. 1-2 has shown a specific embodiment of the present invention, can find out, for purifying thermal power generation from accompanying drawingThe device of factory's tail gas mainly comprises hollow sheeting 1, cooling thing flow channel 14 and exhaust gas flow passage 15, hollow sheeting 1There is the tail gas contact-making surface 16 for collecting described tail gas dirt and/or mist.
In the present embodiment, there are multiple hollow sheetings 1, these hollow sheetings 1 for purifying the device of thermal power plant tail gasAccording to a determining deviation, the layout that is parallel to each other, the spacing of adjacent two hollow sheetings 1 is about 300mm. Cooling logistics is moving logicalRoad 14 is limited and is formed by the hollow structure of hollow sheeting 1, and exhaust gas flow passage 15 is limited by two adjacent hollow sheetings 1Form; The mobile entrance of cooling thing is communicated with supplying water supply system, and the mobile outlet of cooling thing is communicated with drainage system; ColdBut the mobile entrance of thing and mobile outlet can be arranged on hollow sheeting 1 as required, and particular location is unrestricted.
In addition, between adjacent two hollow sheetings 1, be also provided with electrostatic generator 2, hollow sheeting 1 and high-voltage DC power supplyAnodic bonding.
Operation the present embodiment when purifying the device of thermal power plant tail gas, temperature is the powder that carries of 45～55 DEG CThe tail gas stream of dirt and droplet is crossed exhaust gas flow passage, and the flow velocity of tail gas is≤5.0m/s that cooling thing is moving logical in cooling logisticsIn road, flow, this cooling thing is cooling fluid or refrigerating gas, is preferably industrial colling, and the temperature of this cooling thing is 3-20DEG C. Because the temperature of cooling thing is lower than exhaust temperature, and tail gas is almost saturated wet flue gas, and therefore, tail gas willOn tail gas contact-making surface 16, there is condensation, form thin, uniform, the stable moisture film 18 of one deck. In this situationUnder, the dust in tail gas will be hunted down in the time touching moisture film on the one hand, touch the droplet of moisture film by moment and moisture filmCombine together, realize and being caught by moisture film; On the other hand, be arranged at electrostatic generator 2 in exhaust gas flow passage rightTail gas around ionizes, thereby the dust of suspension and droplet are changed into Charged and charged mist by electronics on lotusDrip, pole plate on the sunny side under the effect of electric field, the direction of hollow sheeting 1 moves, thereby is collected on hollow sheeting 1.
The present embodiment has been realized tail gas flow velocity for purifying the device of thermal power plant tail gas is 5.0m/s, after purificationIn tail gas, dust content is≤5mg/Nm3。
Embodiment 2
Fig. 1 and Fig. 3 have shown another specific embodiment of the present invention, can find out, for purifying fire from accompanying drawingThe device of power power plant tail gas mainly comprises hollow sheeting 1, and cooling thing flow channel 14 and exhaust gas flow passage 15, in thisHollow plate 1 has the tail gas contact-making surface 16 for collecting described tail gas dirt and/or mist.
In the present embodiment, there are multiple hollow sheetings 1, these hollow sheetings 1 for purifying the device of thermal power plant tail gasAccording to a determining deviation, the layout that is parallel to each other, the spacing of adjacent two hollow sheetings 1 is about 300mm. Cooling logistics is moving logicalRoad 14 is limited and is formed by the hollow structure of hollow sheeting 1, and exhaust gas flow passage 15 is limited by two adjacent hollow sheetings 1Form; The mobile entrance of cooling thing is communicated with supplying water supply system, and the mobile outlet of cooling thing is communicated with drainage system; ColdBut the mobile entrance of thing and mobile outlet can be arranged on hollow sheeting 1 as required, and particular location is unrestricted.
In addition, also comprise that for purifying the device of thermal power plant tail gas the static of being located at hollow sheeting 1 upstream position occursDevice 2, this electrostatic generator 2 is for entering the front lotus of exhaust gas flow passage 15 by the dust of tail gas and dropletNegative electricity, the anodic bonding of hollow sheeting 1 and high-voltage DC power supply.
Operation the present embodiment when purifying the device of thermal power plant tail gas, temperature is that 45～55 DEG C, flow velocity are≤ 5.0m/s. The tail gas that carries dust and droplet through electrostatic generator 2, dust and droplet are transformed by negative electricity on lotusBecome Charged and charged droplets, then flow through exhaust gas flow passage. Cooling thing flows in cooling thing flow channel,This cooling thing is cooling fluid or refrigerating gas, is preferably industrial colling, and the temperature of this cooling thing is 3-20 DEG C. Due toThe temperature of cooling thing is lower than exhaust temperature, and tail gas is almost saturated wet flue gas, and therefore, tail gas will connect at tail gasTouch on face 16 condensation occurs, form thin, uniform, the stable moisture film 18 of one deck. In this case, a sideDust in face tail gas will be hunted down in the time touching moisture film, and the droplet that touches moisture film combines moment and moisture film together,Realize and being caught by moisture film; On the other hand, Charged and charged droplets on the sunny side pole plate, i.e. hollow under the effect of electric fieldThe direction of plate 1 moves, thereby is collected on hollow sheeting 1.
The present embodiment has been realized tail gas flow velocity for purifying the device of thermal power plant tail gas is 5.0m/s, after purificationIn tail gas, dust content is≤5mg/Nm3。
Embodiment 3
Fig. 1 and Fig. 4 have shown another specific embodiment of the present invention, can find out, for purifying fire from accompanying drawingThe device of power power plant tail gas mainly comprises hollow sheeting 1, and cooling thing flow channel 14 and exhaust gas flow passage 15, in thisHollow plate 1 has the tail gas contact-making surface 16 for collecting described tail gas dirt and/or mist.
In the present embodiment, there are multiple hollow sheetings 1, these hollow sheetings 1 for purifying the device of thermal power plant tail gasAccording to a determining deviation, the layout that is parallel to each other, the spacing of adjacent two hollow sheetings 1 is about 40mm. Cooling logistics is moving logicalRoad 14 is limited and is formed by the hollow structure of hollow sheeting 1, and exhaust gas flow passage 15 is limited by two adjacent hollow sheetings 1Form; The mobile entrance of cooling thing is communicated with supplying water supply system, and the mobile outlet of cooling thing is communicated with drainage system; ColdBut the mobile entrance of thing and mobile outlet can be arranged on hollow sheeting 1 as required, and particular location is unrestricted.
Operation the present embodiment when purifying the device of thermal power plant tail gas, temperature is that 45～55 DEG C, flow velocity areThe tail gas stream of carrying dust and droplet of≤2.5m/s is crossed exhaust gas flow passage, and cooling thing flows in cooling thing flow channelMoving, this cooling thing is cooling fluid or refrigerating gas, is preferably industrial colling, and the temperature of this cooling thing is 3-20 DEG C.Because the temperature of cooling thing is lower than exhaust temperature, and tail gas is almost saturated wet flue gas, and therefore, tail gas will be at tailOn gas contact-making surface 16, there is condensation, form thin, uniform, the stable moisture film 18 of one deck. Now, in tail gasDust will be hunted down in the time touching moisture film, and the droplet that touches moisture film combines moment and moisture film together, realize by waterFilm is caught, thereby the dust in tail gas and droplet are collected on hollow sheeting 1.
The present embodiment has been realized tail gas flow velocity for purifying the device of thermal power plant tail gas is 2.5m/s, after purificationIn tail gas, dust content is≤18mg/Nm3。
Embodiment 4
Fig. 5-7 have shown another specific embodiment of the present invention, from accompanying drawing, can find out, send out for purifying firepowerThe device of flue gas of power plants mainly comprises hollow sheeting 1, cooling thing flow channel 14 and exhaust gas flow passage 15. Hollow sheeting 1For corrugated, be preferably sine wave shape, more specifically, hollow sheeting 1 has 0.5 (as shown in Figure 6) or 0.5Individual above sine wave shape, as 1.5 sine wave shapes (as shown in Figure 5). Hollow sheeting 1 has for collectingState the tail gas contact-making surface 16 of dirt in tail gas and/or mist.
In the present embodiment, there are multiple hollow sheetings 1, these hollow sheetings 1 for purifying the device of thermal power plant tail gasAccording to a determining deviation, the layout that is parallel to each other, the spacing of adjacent two hollow sheetings 1 is about 55mm. Cooling logistics is moving logicalRoad 14 is limited and is formed by the hollow structure of hollow sheeting 1, and exhaust gas flow passage 15 is limited by two adjacent hollow sheetings 1Form; The mobile entrance of cooling thing is communicated with supplying water supply system, and the mobile outlet of cooling thing is communicated with drainage system; ColdBut the mobile entrance of thing and mobile outlet can be arranged on hollow sheeting 1 as required, and particular location is unrestricted.
In addition, between adjacent two hollow sheetings 1, be also provided with electrostatic generator 2, hollow sheeting 1 and high-voltage DC power supplyAnodic bonding.
Operation the present embodiment when purifying the device of thermal power plant tail gas, temperature is the powder that carries of 45～55 DEG CThe tail gas stream of dirt and droplet is crossed exhaust gas flow passage, and the flow velocity of tail gas is≤10.5m/s. Cooling thing is moving logical in cooling logisticsIn road, flow, this cooling thing is cooling fluid or refrigerating gas, is preferably industrial colling, and the temperature of this cooling thing is 3-20DEG C. Because the temperature of cooling thing is lower than exhaust temperature, and tail gas is almost saturated wet flue gas, and therefore, tail gas willOn tail gas contact-making surface 16, there is condensation, form thin, uniform, the stable moisture film 18 of one deck. In this situationUnder, on the one hand, interior when mobile at bending exhaust gas flow passage 15 when the dust in tail gas, dust is at centrifugal actionUnder fly to moisture film and be hunted down, the droplet in tail gas is interior when mobile at bending exhaust gas flow passage 15, droplet is centrifugalUnder power effect, also can fly to moisture film, the droplet that touches moisture film combines moment and moisture film together, realizes and being caught by moisture film;On the other hand, the electrostatic generator 2 being arranged in exhaust gas flow passage ionizes tail gas around, suspensionThereby dust and droplet changed into Charged and charged droplets by electronics on lotus, pole plate on the sunny side under the effect of electric field,The direction that is hollow sheeting 1 moves, thereby is collected on hollow sheeting 1.
The present embodiment has been realized tail gas flow velocity for purifying the device of thermal power plant tail gas is 10.5m/s, after purificationIn tail gas, dust content is≤5mg/Nm3。
Embodiment 5
Fig. 5, Fig. 6 and Fig. 8 have shown another specific embodiment of the present invention, from accompanying drawing, can find out, forThe device that purifies thermal power plant tail gas mainly comprises hollow sheeting 1, cooling thing flow channel 14 and exhaust gas flow passage 15.Hollow sheeting 1 is corrugated, is preferably sine wave shape, and more specifically, hollow sheeting 1 has 0.5 (as Fig. 6 instituteShow) or 0.5 above sine wave shape, as 1.5 sine wave shapes (as shown in Figure 5). Hollow sheeting 1 hasFor collecting the tail gas contact-making surface 16 of described tail gas dirt and/or mist.
In the present embodiment, there are multiple hollow sheetings 1, these hollow sheetings 1 for purifying the device of thermal power plant tail gasAccording to a determining deviation, the layout that is parallel to each other, the spacing of adjacent two hollow sheetings 1 is about 40mm. Cooling logistics is moving logicalRoad 14 is limited and is formed by the hollow structure of hollow sheeting 1, and exhaust gas flow passage 15 is limited by two adjacent hollow sheetings 1Form; The mobile entrance of cooling thing is communicated with supplying water supply system, and the mobile outlet of cooling thing is communicated with drainage system; ColdBut the mobile entrance of thing and mobile outlet can be arranged on hollow sheeting 1 as required, and particular location is unrestricted.
In addition, also comprise that for purifying the device of thermal power plant tail gas the static of being located at hollow sheeting 1 upstream position occursDevice 2, this electrostatic generator 2 is for entering the front lotus of exhaust gas flow passage 15 by the dust of tail gas and dropletNegative electricity, the anodic bonding of hollow sheeting 1 and high-voltage DC power supply.
Operation the present embodiment when purifying the device of thermal power plant tail gas, temperature is that 45～55 DEG C, flow velocity are≤ 11.0m/s. The tail gas that carries dust and droplet through electrostatic generator 2, dust and droplet are turned by negative electricity on lotusChange into Charged and charged droplets, then flow through exhaust gas flow passage. Cooling thing flows in cooling thing flow channel,This cooling thing is cooling fluid or refrigerating gas, is preferably industrial colling, and the temperature of this cooling thing is 3-20 DEG C. Due toThe temperature of cooling thing is lower than exhaust temperature, and tail gas is almost saturated wet flue gas, and therefore, tail gas will connect at tail gasTouch on face 16 condensation occurs, form thin, uniform, the stable moisture film 18 of one deck. In this case, a sideFace, interior when mobile at bending exhaust gas flow passage 15 when the dust in tail gas, dust flies to water under centrifugal actionFilm and being hunted down, the droplet in tail gas is interior when mobile at bending exhaust gas flow passage 15, and droplet is under centrifugal actionAlso can fly to moisture film, the droplet that touches moisture film combines moment and moisture film together, realizes and being caught by moisture film; The opposing partyFace, Charged and charged droplets pole plate on the sunny side under the effect of electric field, the direction of hollow sheeting 1 moves, thus quiltBe collected on hollow sheeting 1.
The present embodiment has been realized tail gas flow velocity for purifying the device of thermal power plant tail gas is 11.0m/s, after purificationIn tail gas, dust content is≤5mg/Nm3。
Embodiment 6
Fig. 5, Fig. 6 and Fig. 9 have shown another specific embodiment of the present invention, from accompanying drawing, can find out, forThe device that purifies thermal power plant tail gas mainly comprises hollow sheeting 1, cooling thing flow channel 14 and exhaust gas flow passage 15.Hollow sheeting 1 is corrugated, is preferably sine wave shape, and more specifically, hollow sheeting 1 has 0.5 (as Fig. 6 instituteShow) or 0.5 above sine wave shape, as 1.5 sine wave shapes (as shown in Figure 5). Hollow sheeting 1 hasFor collecting the tail gas contact-making surface 16 of described tail gas dirt and/or mist.
In the present embodiment, there are multiple hollow sheetings 1, these hollow sheetings 1 for purifying the device of thermal power plant tail gasAccording to a determining deviation, the layout that is parallel to each other, the spacing of adjacent two hollow sheetings 1 is about 30mm. Cooling logistics is moving logicalRoad 14 is limited and is formed by the hollow structure of hollow sheeting 1, and exhaust gas flow passage 15 is limited by two adjacent hollow sheetings 1Form; The mobile entrance of cooling thing is communicated with supplying water supply system, and the mobile outlet of cooling thing is communicated with drainage system; ColdBut the mobile entrance of thing and mobile outlet can be arranged on hollow sheeting 1 as required, and particular location is unrestricted.
Operation the present embodiment when purifying the device of thermal power plant tail gas, temperature is that 45～55 DEG C, flow velocity are≤ 8.5m/s. The tail gas stream of carrying dust and droplet cross exhaust gas flow passage, cooling thing is in cooling thing flow channelFlow, this cooling thing is cooling fluid or refrigerating gas, is preferably industrial colling, and the temperature of this cooling thing is 3-20 DEG C.Because the temperature of cooling thing is lower than exhaust temperature, and tail gas is almost saturated wet flue gas, and therefore, tail gas will be at tailOn gas contact-making surface 16, there is condensation, form thin, uniform, the stable moisture film 18 of one deck. Now, when in tail gasDust interior when mobile at bending exhaust gas flow passage 15, dust flies to moisture film and is hunted down under centrifugal action,Droplet in tail gas is interior when mobile at bending exhaust gas flow passage 15, and droplet also can fly to water under centrifugal actionFilm, the droplet that touches moisture film combines moment and moisture film together, realizes and being caught by moisture film, the dust in tail gas and mistBe collected on hollow sheeting 1 thereby drip.
The present embodiment has been realized tail gas flow velocity for purifying the device of thermal power plant tail gas is 8.5m/s, after purificationIn tail gas, dust content is≤9mg/Nm3。
Embodiment 7
Figure 10 has shown another specific embodiment of the present invention, can find out, for purifying thermal power generation from accompanying drawingThe device of factory's tail gas mainly comprises hollow sheeting 1, cooling thing flow channel 14 and exhaust gas flow passage 15. Hollow sheeting 1For corrugated, be preferably sine wave shape, more specifically, hollow sheeting 1 has 0.5 (as shown in Figure 6) or 0.5Individual above sine wave shape, as 1.5 sine wave shapes (as shown in Figure 5). Hollow sheeting 1 has for collectingState the tail gas contact-making surface 16 of dirt in tail gas and/or mist. As shown in figure 10, on hollow sheeting 1, also comprise one or more hooksPortion 17.
In the present embodiment, there are multiple hollow sheetings 1, these hollow sheetings 1 for purifying the device of thermal power plant tail gasAccording to a determining deviation, the layout that is parallel to each other, the spacing of adjacent two hollow sheetings 1 is about 30mm. Cooling logistics is moving logicalRoad 14 is limited and is formed by the hollow structure of hollow sheeting 1, and exhaust gas flow passage 15 is limited by two adjacent hollow sheetings 1Form; The mobile entrance of cooling thing is communicated with supplying water supply system, and the mobile outlet of cooling thing is communicated with drainage system; ColdBut the mobile entrance of thing and mobile outlet can be arranged on hollow sheeting 1 as required, and particular location is unrestricted.
In addition, between adjacent two hollow sheetings 1, be also provided with electrostatic generator 2, hollow sheeting 1 and high-voltage DC power supplyAnodic bonding.
Operation the present embodiment when purifying the device of thermal power plant tail gas, temperature is the powder that carries of 45～55 DEG CThe tail gas stream of dirt and droplet is crossed exhaust gas flow passage, and the flow velocity of tail gas is≤12.0m/s. Cooling thing is moving logical in cooling logisticsIn road, flow, this cooling thing is cooling fluid or refrigerating gas, is preferably industrial colling, and the temperature of this cooling thing is 3-20DEG C. Because the temperature of cooling thing is lower than exhaust temperature, and tail gas is almost saturated wet flue gas, and therefore, tail gas willOn tail gas contact-making surface 16, there is condensation, form thin, uniform, the stable moisture film 18 of one deck. In this situationUnder, on the one hand, when the dust in tail gas is interior when mobile at bending exhaust gas flow passage 15, dust is through hook portion17 with hollow sheeting limit slype, flow velocity increase, be subject to flying to moisture film and being hunted down compared with large centrifugal force, tail gasIn droplet interior when mobile at bending exhaust gas flow passage 15, it is narrow that droplet limits through hook portion 17 and hollow sheetingPassage, flow velocity increases, and is subject to larger centrifugal force, and droplet also can fly to moisture film under centrifugal action, touches waterThe droplet of film combines moment and moisture film together, realizes and being caught by moisture film; On the other hand, be arranged at exhaust gas flow passageInterior electrostatic generator 2 ionizes tail gas around, thereby the dust of suspension and droplet are turned by electronics on lotusChange into Charged and charged droplets, the pole plate that faces south under the effect of electric field, the direction of hollow sheeting 1 moves, therebyBe collected on hollow sheeting 1.
The present embodiment has been realized tail gas flow velocity for purifying the device of thermal power plant tail gas is 12.0m/s, after purificationIn tail gas, dust content is≤4mg/Nm3。
Embodiment 8
Figure 11 has shown another specific embodiment of the present invention, can find out, for purifying thermal power generation from accompanying drawingThe device of factory's tail gas mainly comprises hollow sheeting 1, cooling thing flow channel 14 and exhaust gas flow passage 15. Hollow sheeting 1For corrugated, be preferably sine wave shape, more specifically, hollow sheeting 1 has 0.5 (as shown in Figure 6) or 0.5Individual above sine wave shape, as 1.5 sine wave shapes (as shown in Figure 5). Hollow sheeting 1 has for collectingState the tail gas contact-making surface 16 of dirt in tail gas and/or mist. As shown in figure 11, on hollow sheeting, also comprise one or more hook portions17。
In the present embodiment, there are multiple hollow sheetings 1, these hollow sheetings 1 for purifying the device of thermal power plant tail gasAccording to a determining deviation, the layout that is parallel to each other, the spacing of adjacent two hollow sheetings 1 is about 30mm. Cooling logistics is moving logicalRoad 14 is limited and is formed by the hollow structure of hollow sheeting 1, and exhaust gas flow passage 15 is limited by two adjacent hollow sheetings 1Form; The mobile entrance of cooling thing is communicated with supplying water supply system, and the mobile outlet of cooling thing is communicated with drainage system; ColdBut the mobile entrance of thing and mobile outlet can be arranged on hollow sheeting 1 as required, and particular location is unrestricted.
In addition, also comprise that for purifying the device of thermal power plant tail gas the static of being located at hollow sheeting 1 upstream position occursDevice 2, this electrostatic generator 2 is for entering the front lotus of exhaust gas flow passage 15 by the dust of tail gas and dropletNegative electricity, the anodic bonding of hollow sheeting 1 and high-voltage DC power supply.
Operation the present embodiment when purifying the device of thermal power plant tail gas, temperature is that 45～55 DEG C, flow velocity are≤ 12.0m/s. The tail gas that carries dust and droplet through electrostatic generator 2, dust and droplet are turned by negative electricity on lotusChange into Charged and charged droplets, then flow through exhaust gas flow passage. Cooling thing flows in cooling thing flow channel,This cooling thing is cooling fluid or refrigerating gas, is preferably industrial colling, and the temperature of this cooling thing is 3-20 DEG C. Due toThe temperature of cooling thing is lower than exhaust temperature, and tail gas is almost saturated wet flue gas, and therefore, tail gas will connect at tail gasTouch on face 16 condensation occurs, form thin, uniform, the stable moisture film 18 of one deck. In this case, a sideFace, when the dust in tail gas is interior when mobile at bending exhaust gas flow passage 15, dust is through hook portion 17 and hollowThe slype that plate limits, flow velocity increases, and is subject to flying to moisture film and being hunted down compared with large centrifugal force; Droplet in tail gasThe slype interior when mobile at bending exhaust gas flow passage 15, droplet limits through hook portion 17 and hollow sheeting, streamSpeed increases, and is subject to larger centrifugal force, and droplet also can fly to moisture film under centrifugal action, touches the droplet of moisture filmMoment and moisture film are combined together, realize and being caught by moisture film; On the other hand, Charged and charged droplets are at electric fieldThe lower pole plate on the sunny side of effect, the direction of hollow sheeting 1 moves, thereby is collected on hollow sheeting 1.
The present embodiment has been realized tail gas flow velocity for purifying the device of thermal power plant tail gas is 12.0m/s, after purificationIn tail gas, dust content is≤4mg/Nm3。
Embodiment 9
Figure 12 has shown another specific embodiment of the present invention, can find out, for purifying thermal power generation from accompanying drawingThe device of factory's tail gas mainly comprises hollow sheeting 1, cooling thing flow channel 14 and exhaust gas flow passage 15. Hollow sheeting 1For corrugated, be preferably sine wave shape, more specifically, hollow sheeting 1 has 0.5 (as shown in Figure 6) or 0.5Individual above sine wave shape, as 1.5 sine wave shapes (as shown in Figure 5). Hollow sheeting 1 has for collectingState the tail gas contact-making surface 16 of dirt in tail gas and/or mist. As shown in figure 12, on hollow sheeting, also comprise one or more hook portions17。
In the present embodiment, there are multiple hollow sheetings 1, these hollow sheetings 1 for purifying the device of thermal power plant tail gasAccording to a determining deviation, the layout that is parallel to each other, the spacing of adjacent two hollow sheetings 1 is about 30mm. Cooling logistics is moving logicalRoad 14 is limited and is formed by the hollow structure of hollow sheeting 1, and exhaust gas flow passage 15 is limited by two adjacent hollow sheetings 1Form; The mobile entrance of cooling thing is communicated with supplying water supply system, and the mobile outlet of cooling thing is communicated with drainage system; ColdBut the mobile entrance of thing and mobile outlet can be arranged on hollow sheeting 1 as required, and particular location is unrestricted.
Operation the present embodiment when purifying the device of thermal power plant tail gas, temperature is that 45～55 DEG C, flow velocity are≤ 8.5m/s. The tail gas stream of carrying dust and droplet cross exhaust gas flow passage, cooling thing is in cooling thing flow channelFlow, this cooling thing is cooling fluid or refrigerating gas, is preferably industrial colling, and the temperature of this cooling thing is 3-20 DEG C.Because the temperature of cooling thing is lower than exhaust temperature, and tail gas is almost saturated wet flue gas, and therefore, tail gas will be at tailOn gas contact-making surface 16, there is condensation, form thin, uniform, the stable moisture film 18 of one deck. Now, when in tail gasDust interior when mobile at bending exhaust gas flow passage 15, it is narrow that dust limits through hook portion 17 and hollow sheetingPassage, flow velocity increases, and is subject to flying to moisture film and being hunted down compared with large centrifugal force; Droplet in tail gas is at bending tail gasFlow channel 15 is interior when mobile, the slype that droplet limits through hook portion 17 and hollow sheeting, and flow velocity increases, and is subject toLarger centrifugal force, droplet also can fly to moisture film under centrifugal action, touches the droplet of moisture film by moment and moisture filmCombine together, realize and being caught by moisture film, thereby the dust in tail gas and droplet are collected on hollow sheeting 1.
The present embodiment has been realized tail gas flow velocity for purifying the device of thermal power plant tail gas is 8.5m/s, after purificationIn tail gas, dust content is≤8mg/Nm3。
Embodiment 10
Figure 13-18th, another specific embodiment of the present invention, in order more clearly to show the concrete structure of the present embodiment,The actual cutaway view for the device for purifying thermal power plant tail gas of Figure 17 and Figure 18, the device of the present embodiment hasCooling thing flow channel 14 and exhaust gas flow passage 15, this device also comprises for cooling thing flow channel described in interval14 and described exhaust gas flow passage 15 at described cooling thing flow channel 14 and described exhaust gas flow passage 15Between the distance member 12 of heat-shift, this distance member 12 has the tail for collecting described tail gas dirt and/or mistGas contact-making surface.
In the present embodiment, there are multiple distance members 12, these intervals for purifying the device of thermal power plant tail gasParts are tubulose, and as shown in Figure 13-16, distance member 12 has inwall 121 and the outer wall 122 corresponding with inwall,Exhaust gas flow passage is limited and is formed by the inwall 121 of distance member, that is, inwall 121 reality of distance member be forCollect the tail gas contact-making surface of dirt in described tail gas and/or mist.
In addition, have the second tubular part 13 in the outer cover of distance member 12, cooling thing flow channel is by distance memberOuter wall 122 and the inwall 131 of the second tubular part 13 limit and form.
A distance member 12 and second tubular part 13 form a collection assembly, and the present embodiment is for cleanThe repetitive of changing the device of thermal power plant tail gas, comprises so multiple for purifying the device of thermal power plant tail gasCollection assembly, multiple collection assemblies become cellular. Distance member 12 and the second tubular part 13 are formed in one,Or connect by a connection piece. The mobile entrance of cooling thing and mobile outlet can be arranged on the second tubulose as requiredOn parts 13 and/or connector, particular location is unrestricted.
The cross section of distance member 12 can be triangle, polygon, circle (as shown in Figure 15,16 and 18) orEllipse, the cross section of the second tubular part 13 can be that triangle, polygon, circle are (as Figure 15,16 and 18Shown in) or oval. The cross section of distance member 12 is preferably hexagon, and the cross section of the second tubular part 13 is excellentElect hexagon as, specifically as shown in Figure 13,14 and 17.
In addition, in distance member 12, be also provided with electrostatic generator 2, the sun of distance member 12 and high-voltage DC power supplyThe utmost point connects.
Operation the present embodiment when purifying the device of thermal power plant tail gas, temperature is 45～55 DEG C carryingThe tail gas stream of dust and droplet is crossed exhaust gas flow passage, and the flow velocity of tail gas is≤4.5m/s. Cooling thing is in cooling logisticsIn moving passage, flow, this cooling thing is cooling fluid or refrigerating gas, is preferably industrial colling, the temperature of this cooling thingFor 3-20 DEG C. Because the temperature of cooling thing is lower than exhaust temperature, and tail gas is almost saturated wet flue gas, therefore,To there is condensation on the inwall at distance member 12 121 in tail gas, forms thin, uniform, the stable water of one deckFilm. In this case, the dust in tail gas will be hunted down in the time touching moisture film on the one hand, touch moisture filmDroplet moment and moisture film are combined together, realize caught by moisture film; On the other hand, be arranged at distance member 12In electrostatic generator 2 tail gas is around ionized, the dust of suspension and droplet by electronics on lotus fromAnd changing into Charged and charged droplets, the distance member 12 to positively charged under the effect of electric field moves, fromAnd be collected on the inwall 121 of distance member 12.
The present embodiment has been realized tail gas flow velocity for purifying the device of thermal power plant tail gas is 4.5m/s, after purificationIn tail gas, dust content is≤6mg/Nm3。
Embodiment 11
Figure 13-16 and Figure 19-20th, another specific embodiment of the present invention, in order more clearly to show the present embodimentConcrete structure, Figure 19 and Figure 20 are actual is the cutaway view of device for purifying thermal power plant tail gas, this enforcementThe device of example has cooling thing flow channel 14 and exhaust gas flow passage 15, and this device also comprises for cold described in intervalBut thing flow channel 14 and described exhaust gas flow passage 15 at described cooling thing flow channel 14 and described tail gasThe distance member 12 of heat-shift between flow channel 15, this distance member 12 has for collecting described tail gas dirtAnd/or the tail gas contact-making surface of mist.
In the present embodiment, there are multiple distance members 12, these intervals for purifying the device of thermal power plant tail gasParts are tubulose, and as shown in Figure 13-16, distance member 12 has inwall 121 and the outer wall 122 corresponding with inwall,Exhaust gas flow passage is limited and is formed by the inwall 121 of distance member, that is, inwall 121 reality of distance member be forCollect the tail gas contact-making surface of dirt in described tail gas and/or mist.
In addition, have the second tubular part 13 in the outer cover of distance member 12, cooling thing flow channel is by distance memberOuter wall 122 and the inwall 131 of the second tubular part 13 limit and form.
A distance member 12 and second tubular part 13 form a collection assembly, and the present embodiment is for cleanThe repetitive of changing the device of thermal power plant tail gas, comprises so multiple for purifying the device of thermal power plant tail gasCollection assembly, multiple collection assemblies become cellular. Distance member 12 and the second tubular part 13 are formed in one,Or connect by a connection piece. The mobile entrance of cooling thing and mobile outlet can be arranged on the second tubulose as requiredOn parts 13 and/or connector, particular location is unrestricted.
The cross section of distance member 12 can be triangle, polygon, circle or oval, the second tubular part 13Cross section can be triangle, polygon, circle (as shown in Figure 15,16 and 20) or ellipse. Interval partsThe cross section of part 12 is preferably hexagon, and the cross section of the second tubular part 13 is preferably hexagon, specifically as Figure 13,Shown in 14 and 19.
Operation the present embodiment when purifying the device of thermal power plant tail gas, temperature is 45～55 DEG C carryingThe tail gas stream of dust and droplet is crossed exhaust gas flow passage, and the flow velocity of tail gas is≤2.5m/s. Cooling thing is in cooling logisticsIn moving passage, flow, this cooling thing is cooling fluid or refrigerating gas, is preferably industrial colling, the temperature of this cooling thingFor 3-20 DEG C. Because the temperature of cooling thing is lower than exhaust temperature, and tail gas is almost saturated wet flue gas, therefore,To there is condensation on the inwall at distance member 12 121 in tail gas, forms thin, uniform, the stable water of one deckFilm. Now, the dust in tail gas will be hunted down in the time touching moisture film, the droplet that touches moisture film by moment withMoisture film combines together, realize and being caught by moisture film, thereby the dust in tail gas and droplet is collected in distance member 12Inwall 121 on.
The present embodiment has been realized tail gas flow velocity for purifying the device of thermal power plant tail gas is 2.5m/s, after purificationIn tail gas, dust content is≤20mg/Nm3。
The tail gas that carries dust and droplet, obtains for after purifying the device of thermal power plant tail gas and processing through the present inventionBe saturated wet flue gas, relative humidity reaches or approaches 100%, air-flow will be used for purifying firepower in the present invention and send outIn the upstream device of the device of flue gas of power plants, such as flue, the chimney etc. of downstream position, because the loss of heat is analysedGo out condensed water. Because the temperature that is used for the device tail gas after treatment that purifies thermal power plant tail gas through the present invention is lower than acidThereby a small amount of corrosive gas of dew-point temperature will corrode upstream device, therefore, preferably be used for purifying firepower in the present inventionThe downstream of the device of power plant tail gas is provided with demister. Described demister comprises multiple hollow sheetings 1, described hollowThe hollow structure of plate defines the flow channel of heating thing, in hollow sheeting, flows and has temperature for exceeding 50 DEG C. Hot water.Saturated wet flue gas is after described demister heating, and when droplet is blocked collection, exhaust gas temperature is also improved,Thereby reach the regulation effect of eliminating or slowing down chimney rain, " white cigarette ". In order to make above-mentioned effect better, hollow sheeting 1On preferably include one or more hook portions 17.
For guarantee the present invention can be long-term for purifying the device of thermal power plant tail gas, safety, reliability service, preferablyThe present invention for purify the device of thermal power plant tail gas and the demister of its downstream position upstream side and/or underTrip side configuration rinse-system. When invention is for purifying the device of thermal power plant tail gas and the demister of its downstream positionOperation pressure drop can open rinse-system and eliminate obstruction foulant after rising.
In addition, in the time using the present invention to be used for purifying the device of thermal power plant tail gas, its upstream position can also be provided withOne-level or multistage being selected from comprise Flat defroster, roof type demister, tubular demister and horizontal gas flow demisterOne or more in the group of composition, so that dust removing effects is better.
More than describe preferred embodiment of the present invention in detail. Should be appreciated that those of ordinary skill in the art withoutNeed creative work just can design according to the present invention make many modifications and variations. Such as the present invention is used for purifyingThe application of installation of thermal power plant tail gas is on the flue tilting or on vertical flue or in absorption tower, or generalThe present invention is for purifying more than the device of thermal power plant tail gas and/or demister be all designed to one-level, or by thisThe form of bright hollow sheeting substitutes with baffle plate type, or alternative with other curve forms, or increases on collecting boardHook portion or hole, or change spacing between collecting board etc. Therefore, all technical staff are in the art according to thisThe design of invention is on the basis of existing technology by the available technology of logical analysis, reasoning, or a limited experimentScheme, all should be in by the determined protection domain of claims.
Claims (10)
1. for purifying a device for thermal power plant tail gas, it is characterized in that, it is moving that described device has cooling logisticsPassage and exhaust gas flow passage, described device also comprises for cooling thing flow channel and described exhaust gas flow described in intervalPassage for the distance member at described cooling thing flow channel and described exhaust gas flow exchanged between channels heat, instituteState distance member and there is the tail gas contact-making surface for collecting described tail gas dirt and/or mist.
2. device as claimed in claim 1, is characterized in that, the quantity of described distance member is multiple, and compositionThe distance member group of multiple repetitions, described distance member group comprises the first distance member and the second distance member, described coldBut thing flow channel is limited and is formed by described the first distance member and described the second distance member, described exhaust gas flow passageLimit and form by two adjacent described distance member groups.
3. device as claimed in claim 2, is characterized in that, described the first distance member and described the second interval partsPart is formed in one.
4. device as claimed in claim 2, is characterized in that, described distance member group also comprises for described in connectingThe connector of the first distance member and described the second distance member.
5. device as claimed in claim 2, is characterized in that, described the first distance member and described the second interval partsPart is tabular.
6. device as claimed in claim 2, is characterized in that, described distance member group is hollow sheeting, described coolingThing flow channel is limited and is formed by the hollow structure of described hollow sheeting, and described exhaust gas flow passage is by described in adjacent twoHollow sheeting limits and forms.
7. device as claimed in claim 6, is characterized in that, adjacent two described hollow sheetings are respectively with contrary electricityLotus.
8. device as claimed in claim 7, is characterized in that, the spacing of adjacent two described hollow sheetings is 100～400mm。
9. device as claimed in claim 6, is characterized in that, is also provided with quiet between adjacent two described hollow sheetingsElectricity generating means, described hollow sheeting is positively charged.
10. device as claimed in claim 9, is characterized in that, the spacing of adjacent two described hollow sheetings is 50～300mm。
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| CN201410639495.2A CN105582766A (en) | 2014-11-12 | 2014-11-12 | Apparatus for purifying tail gas from thermal power plant |
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| CN201410639495.2A CN105582766A (en) | 2014-11-12 | 2014-11-12 | Apparatus for purifying tail gas from thermal power plant |
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| CN110354998A (en) * | 2019-07-19 | 2019-10-22 | 福建龙净环保股份有限公司 | Water-saving wet electrical dust precipitator and its anode system, heat exchange anode plate |
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| CN201862325U (en) * | 2010-11-10 | 2011-06-15 | 天津市恒脉机电科技有限公司 | Vertical baffling blind type demister |
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