CN105597475A - United roller method desulfurization and dust removal purifying device system - Google Patents
United roller method desulfurization and dust removal purifying device system Download PDFInfo
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- CN105597475A CN105597475A CN201610135825.3A CN201610135825A CN105597475A CN 105597475 A CN105597475 A CN 105597475A CN 201610135825 A CN201610135825 A CN 201610135825A CN 105597475 A CN105597475 A CN 105597475A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
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Abstract
The invention relates to three related technologies. A united roller tower is formed by connecting multiple purifying units in series, each purifying unit is formed by matching air-liquid mixing rollers (water film filter mesh rollers) and a liquid box, motor drive rotation is combined with top pouring or rotary spraying to form efficient, sufficient, fast and repeated air-liquid contact, continuous operation of dust removal and cooling, efficient desulfurization, neutralizing and thinning and cleaning purification is sequentially conducted through the purifying units with different effects, and investment operation cost is greatly reduced through modular production, transportation, installation and maintenance; a high-speed dust remover belongs to a brand-new dust remover, can be of a vertical or horizontal structure form and of multiple specifications and can remove dust in echelon to remove large, medium and small fine particle matter; a united roller method desulfurization and dust removal purifying device system is composed of the high-speed dust remover and the united roller tower, the flow path is simplified, electricity and labor are saved, PM10-PM2.5 and residual SO2 and SO3 are eliminated completely, reaction products are discharged, and clean emission can be achieved in the wide fields of thermal power, steel, cement, chemical engineering, kitchen cooking fume purification and the like.
Description
Technical field
The present invention relates to a kind of brand-new wet method sulphur removing and dust removing cleaning system and installation method thereof, its apparatus structure canDusty gas is carried out to active attack operation, form the effect of high efficiency, high purifying rate, innovative device methodAlso can be used for other and purify demand field, can produce equally ' two high ' effect.
Background technology
(1) desulfurizing tower background technology
Lime/lime stone---gypsum wet flue gas desulfurizing is to control sulfur dioxide (SO2) emissions to pollute the most frequently used cleanChange method, occupies global desulfurization installation the more than 90% of total amount, have that applicable coal is wide, raw material is cheap and easy to get,Desulfuration efficiency can reach more than 90%, and flue gas process range is large, the utilization rate of absorbent is high, to coal and unitThe plurality of advantages such as load variations strong adaptability.
A set of complete wet limestone-gypsum FGD process system generally includes: flue gas system, SO2AbsorbSystem, absorbent preparation system, gypsum dehydration and storage system, fresh water (FW) system, wastewater treatment and dischargeSystem, control system etc., the desulphurization plant system of different company is similar, and main difference is desulfurizing towerPattern and structure on.
The lime/lime stone that China introduces---gypsum wet desulfur technology mainly contain German Shandong very can be prompt thisThan the Bagao Ke Boxige BBP of the energy company skill of knowing husband's technology, the U.S. B&W of Ba Wei company technology, GermanyArt, Italian LDRECO company technique, Austrian AE PLC technology and Japanese thousand generation field technology etc., aboveExcept Japanese thousand absorption towers, generation field adopt bubble tower form, all the other absorption towers are spray column. (draw above certainly:" Jiangxi Electric Power " the 30th volume the 5th phase in 2004 what duckweed " spray column and bubble tower type wet desulphurizationTechnique comparison " article).
The formation of the general principle of various desulfation dust-extraction devices and its structural behaviour advantage is all to try hard to maximumThe mode of changing, save the most efficiently, most make flue gas and lime slurry realize large area, high strength, high efficiency,The abundant gas-liquid mixed of time delay is impacted contact repeatedly, for reaching aforementioned capabilities index, and the existing spray adopting at mostPouring tower and bubble tower also exist and are difficult to make desulfuration efficiency, clean-up effect, electricity-saving labor-saving, Construction and operation expenseThe technical reason of raising is further optimized in the aspects such as reduction.
1, spray process is difficult to further optimize the reason of raising ability, efficiency, purifying rate:
1. the sprinkle density of further optimization raising lime slurry and spray degree are difficult to the palm of realizing idealControl; If spray droplet is large, can makes gas-liquid contact area reduce and fall fast; Make the high circulation of sprinkle densityThe power consumption of pump can be very large; If the tiny atomization of spray droplet, easy and flue gas is lumped together and is formed and deposit shapeState, is easily blown away by air-flow, and fume-dehydrating is difficulty also, and be also difficult to form high-intensity gas-liquid and impact contact,High-strength impact scope is only near nozzle.
2. because gas-liquid contact ability and efficiency that spray forms are lower, make the interior space utilization of spray column veryInsufficient, can only rely on the increase of tower body being increased to obtain gas-liquid contact timeliness, tower height is conventionally at 40-50Rice; In addition slurries will form certain spray fineness and disperse to need pressure in very large pipeline, make Sprayer Circulation systemSystem has formed the situation of ' pressure+high flow capacity in Gao Ticheng+height ', and power consumption is very large, operating cost is very high. GreatlyDiameter high tower causes again the air-flow of different degree of purifications to form turbulent flow, makes clean-up effect unstable.
3. due to the strict demand with spray fineness to nozzle, spray process is for the fineness of grind requirement of lime stoneDouble than Bubbling method many, the higher otherwise nozzle of the harmony requirement meeting of lime particle fineness is easily stopped up;Therefore spray process is a lot of for the grinding energy consumption of lime stone and the increase of work consumption, and nozzle easily wearing and tearing causes sprayDesign effect variation, causes purification efficiency to decline.
2, bubble tower technique and device are to be developed by Japanese thousand Dai Tian companies, again claim: thousand generation field technique,That is: in bubbling reactor, pressurized smoke gas blowout is mapped under the liquid level of lime slurry compared with depths, at flue gas bubblingIn floating-upward process, produce gas-liquid contact effect, realize the effect of desulfurization and dedusting, it can be by the gas transmission of regulation and control flue gasThe mode of pipeline immersed in liquid level change in depth, detergent power and the effect of regulation and control Bubbling method desulfurization and dedusting.
Bubbling method is by SO2Absorption, oxidation, neutralization, crystallization and dedusting complete in an absorption tower reactorBecome, make systematic procedure simple; Bubbling method has been saved circulating pump and the spray equipment of spray process. Bubbling method forLime stone fineness of grind and balanced intensity require greatly to reduce, the large easily dehydration of gypsum crystal of generation, qualityGood; But the internal structure complexity of bubble tower, the difficulty of installation and maintenance maintenance is large, takes up an area greatly, and gas-flow resistance is large,Absorption process power consumption is large.
(above-mentioned drawing certainly: " the technique comparison of spray column and bubble tower type wet desulphurization ")
Although the large much progress of Bubbling method, in spray process, is also deposited deficiency and new problem in many aspects.
3,, except spray process and Bubbling method, also have the installation methods such as spiral board desulfurizing tower and packed tower, its shapeThe mode that becomes gas-liquid contact is all using the flue gas after pressurization as active force, attacks overcurrent and arranges in desulfurizing towerDifferent structure, make flue gas and slurries form eddy flow and disperse or filter, produce different gas-liquid contact effects.
Because the structure in desulfurizing tower is all to wait in passive the state that flue gas impacts, be difficult to form on the spotThe gas-liquid contact repeatedly repeating, resistance is large.
Investment and the operating cost of 4, current lime/lime stone---gypsum wet flue gas desulfurizing are very large, fortuneRow fault is many, maintenance is large, and de-sludging is safeguarded with the difficulty of stopping up maintenance large, also makes clean-up effect unstable,Catastrophic failure impact is produced, and generation that cannot advance preventing accident, is also difficult to repair and resume production fast.
5, current all desulfurizing towers, adsorption tower, purifying column all can not be by the masters of self structure parts in towerMoving attack type of drive changes ability, intensity, efficiency and the effect of gas-liquid contact, can not make desulfurizing towerRealize the degree of purification that progressively improves overcurrent flue gas is set stage by stage.
If there is no progressively decontamination procedure and the progressively cooperation of Cress medium, only by one-stop operation,It is the thing that impossible accomplish that a kind of medium is just reached clean discharge; Such as: form ' gypsum rain ' phenomenon,In the clean cigarette condensate water of discharge, there is the problems such as severe corrosive and produce, have SO2、SO3Strong taste and permittedMany careful dusts, water dissolved substance etc. are not removed.
Above-mentioned situation explanation, existing desulfurizer device system is difficult to produce ability under prior art framework againThe important breakthrough of effect improves; Therefore be difficult to solve existing issue at all, must add more effectively effectiveThe participation of brand new method, could therefrom produce the kinetic factor of realizing dramatic change.
(2) deduster background technology
1, various Industrial Boilers, the kiln such as Present Thermal Power factory all exists the uncontrolled row of PM2.5-PM10The problem of putting, wherein reason is in current whole desulfurization dust-removing technique system, without any a techniqueFlow process is can effectively purify to eliminate PM2.5-PM10 fine particle;
Current more than 95% thermal power plant and Industrial Stoves have adopted electric cleaner or sack cleaner, and electricity removesIt is substantially invalid that corona+electric field that dirt device adopts fine particle is collected dust mode, especially rightPM10---PM2.5 fine particle belongs to completely invalid, and sack cleaner is also without addressing this problem.
2, Chinese electric cleaner technology is from external introduction, occurs the dust collecting pole plate that 20m is long after 1970,Large thermal power plant electric cleaner resembles an iron and steel mansion now, the principle that this explanation electric cleaner is collected dustMethod, ability, efficiency are very low, need magnifying electrode plate to collect the increase of area fulfillment capability effect;
The root reason that produces the problems referred to above is ' will simply catch particulate method complicated, inapplicableChange ' due to, this is to belong to most basic know-why choice direction problem, but not is the design of electric cleanerManufacturing technology problem, even if therefore make great efforts to improve the capturing ability level of electric cleaner, is also bound to by letter againSingle be suitable for, be suitable for efficiently at a low price principle technology and substitute, because of for a change method for catching also just solved oneCut problem, especially more can form significantly contrast effect mutually in heat-engine plant wet desulfurization and dedusting field.
(3) wet method sulphur removing and dust removing cleaning system background technology
Current, the view generally acknowledged in desulfurization and dedusting industry is: realize the difficulty of 90% purifying rate will be easily in againIncrease the difficulty that improves other 10% purifying rate, even will increase difficulty several times, this illustrates that current desulfurization removesThe detergent power of dirt cleaning system component devices reaches capacity, need to add completely newly by update modeFactor could produce breakthrough raising, because system advantage comes from component devices, the advantage of device is passed throughSystem composition obtains entirety performance, forms brand-new outstanding effect.
Obviously visible: to realize total system technological break-through and efficiency leap, solve the unique of existing double linear problems of difficulty for solvingApproach is device, method and the brand-new integrated artistic system that innovation forms brand-new kind.
Summary of the invention
The object of the invention is:
1. propose a kind of brand-new kind device that is called connection roller tower, it is in series by many clean units,Active drive attack by clean unit internal structure connects with control methods with by the clean unit of connectingThe mode of continuous operation, reaches stable clean emission effect.
2. propose a kind of brand-new kind dedusting and purifying device that is called high speed dust removing device, its vertical type has and removesDirt, cooling, residual heat collection are exported three-in-one function, are especially applicable to wet method sulphur removing and dust removing, large-scale dedusting field,Horizontal type is adapted at other large, medium and small field of purification application, and its type is various, widely applicable.
3. propose a kind of overall technical architecture that is called connection roller method wet method sulphur removing and dust removing cleaning system, this system is logicalCross ' high speed dust removing device+connection roller tower ' and formed brand-new system process composition advantage, have that flow process is short, bodyLong-pending little, small investment, easy to operate, fault-free, and construction operation expense, power consumption expense are significantly fallenLow, purification efficiency and clean-up effect are increased substantially, realize clean discharge by system capability.
(note: connection roller method technique can remove completely ' PM10-PM2.5, gaseous state SO2, with water smoke dissolubilityParticulate dust and the medium of SO3 and sulfur removal technology process, form after the reaction product etc. of gypsum,Be called and be: clean discharge. The denitration of connection roller genealogy of law system can adopt existing usual way, as: selective non-urgingChange reducing process, selective catalytic reduction [SCR], before high speed dust removing device, complete. )
One, connection roller tower
1, the structure of clean unit and effect thereof:
(1) clean unit on connection roller tower coordinates work by gas-liquid mixed roller with the fluid box pond arranging under itIndustry; (gas-liquid mixed roller or title moisture film filter screen roller, its appellation can be according to the different work stage of connection roller method techniqueOr the Adaptive change of different work realize target formation appellation, meet with the correspondence that embodies action and efficacy target,Alleged gas-liquid mixed roller or title moisture film filter screen roller refer to same operating type and modular construction herein) (liquidBody case pond or title absorption liquid pool, water tank pond etc., forming different appellations variations is because the difference of clean unit shouldWith field; Or form according to different target stage and the realize target task of clean unit in connection roller method techniqueThe variation of title. Be called herein: slurries, liquid, water and corresponding slurry tank pond, fluid box pond, water thereofCase pond refers to the object of same functional structure), the following part different depth of the diameter ground of gas-liquid mixed roller immersesUnder the liquid level in fluid box pond, can produce in subsurface filtering net surface and move shape by the rotation of gas-liquid mixed rollerBecome the action effect of cleaning roller net.
(2) in a clean unit, can arrange 1 and arrive or 4 or more gas-liquid mixed roller, logicalCross in a clean unit and to increase the mode that moisture film filter screen roller quantity is set, can realize improve detergent power withSimplified structure effect; Gas-liquid mixed roll shaft is connected with motor outside case pool wall realizes driving rotate effect, can lead toCross belt pulley or chain or gear drive and realize the gas-liquid that drives setting in same clean unit with a motorThe common rotating operation of mixing mill (moisture film filter screen roller).
(3) the additional top pouring circulatory system that arranges on gas-liquid mixed roller, that is: carry from fluid box pondGet top one side or the top that rise to gas-liquid mixed roller after liquid, continue to water the rolling in gas-liquid mixed rollerIn filtering net surface, be called: the top pouring circulatory system, it can supplement increase moisture film filter screen roller and (or claim gas-liquid mixedClose roller) amount of liquid in upper sieve, then coordinate rotation after roller sieve bottom immersed in liquid level to carry riseSlurries are realized upper and lower balanced water film filtering effect, water the moisture film filter of also cleaning constantly whole rolling by topNet roller wire side.
(4) be provided with case lid on the top in fluid box pond, case lid and case pond merged and be called; Casing, casingInside has formed the independent operating working space of gas-liquid mixed roller, opens and closes casing and can facilitate installation and maintenance to purify listThe internal structure of unit; Case lid inner top is the spill cambered surface of formation and gas-liquid mixed roller cambered surface of rotating close fitBody structure, will water pipeline and spill globoidal structure forms integrated design.
The circulation motor that the pouring circulatory system is set outward at casing, imbibition pipeline leads in fluid box pond, on itAfter being connected with the pouring main line on case lid, pipeline just forms the complete cycle system of ' draw-promote-pouring 'System, in clean unit, multiple moisture film filter screen rollers arranged side by side can water with a circulation motor lift line circulation.
The top pouring circulatory system is applicable to adopt under the state of moisture film filter screen roller low speed rotation operation, is suitable forIn the larger situation of moisture film filter screen roller filter screen design density, adopt, be conventionally applicable to the sparse unit of neutralization withThe Cress unit stage adopts the advantage that has more.
(5) make gas-liquid mixed roller realize High Rotation Speed and more can pass through powerful centrifugal action, make to water liquidBody passes through roller net and produces the gas-liquid contact effect that slurries are at a high speed dispersed, overcurrent impacts from gas-liquid mixed Gun centerReally, the inner space that then slurries is thrown to casing is thrown in the inner wall surface of casing then, forms comprehensiveThe abundant contact continuously and healthily repeatedly of high efficiency gas-liquid, the slurries that make box house are constantly in impactFlow regime. The appearance of this situation causes again box house and gas-liquid mixed roll surface all cannot produce slurries stoppingStay the problem of fouling, reach operative goals by high-speed sprinkling and reach again washing and cleaning operation instrument thereby realizedEffectiveness also can realize the action effect that mutually gets rid of slurry spray between roller and roller under multiple roll arranges, and increases by oneThe density of times cabinet space slurries spray droplet.
(6) liquid outlet that gas-liquid mixed roller waters the circulatory system under high-speed cruising state is located at gas-liquid mixedIn the central shaft tube of roller, the intensive hole formation arranging by distributing on central shaft tube rotation from inside to outsideFormula spraying effect, is called: the rotary spray circulatory system; The pouring spray system of multi-joint roller clean unit can be adoptedFulfil assignment by 1 circulating pump with series system; Moisture film filter screen roller in rotary spraying type clean unitBottom arranges air-flow division board, in order to stop that flue gas forms the gas-liquid of unification from the weakness overcurrent of filter screen rollerContact effect; Make slurries can flow into case pond in the top of air-flow division board formation certain slope and small holes.
(7), in rotary spray clean unit, gas-liquid mixed roller can form and not contact case pond liquid level completelyForm is set; Also need to baffle plate be set at clean unit air inlet and gas outlet place, stop that High Rotation Speed gets rid ofThe liquid going out enters adjacent clean unit, and the setting of baffle plate longitudinal arrangement can avoid slurries to retain.
(8) by the centrifugal action of moisture film filter screen roller High Rotation Speed, also can effectively realize dehydration effect,At the last clean unit of installing of cleaning system, pouring circulating pump is not set, catches water by roller net rotating percussionAfter mist, get rid of to tank wall at a high speed, collect discharge by cabinet wall, be called: dewatering unit.
(9) newly add the slurries of clean unit or need in clean unit, supplement the import pathway that changes water etc.Mode is that the pipeline that waters the circulatory system or central rotation Sprayer Circulation system by top is realized new liquid input.
Add structure to be: the bottom at connection roller tower arranges slurries storage pool, moisturizing storage pool etc., at storage poolSetting adds pipeline and adds pump, adds pipeline to realize and being connected with the upper pipeline of the pouring circulatory system.
Add method to be: first to close down pouring or Sprayer Circulation pump, open and add the pump can be by adding pipe subsequentlyThe operation that directly realizes top pouring or rotary spray after slurries is extracted on road from storage pool, by completing routineOperation has also just completed adding of new slurries, and this does not produce new just without offering and add pipeline on casingAdd one side alluvial of liquid, be distributed in the top of case pond liquid.
(10) on different purposes clean units, need special additional special requirement structure member explanation:
1. the female pipe of gas transmission of input oxidation air is set, by case pond in case pool wall one side of desulfurization and dedusting unitInner air delivering pipeline forms the distribution of uniform air pipe line;
2. in the case pond of desulfurization and dedusting unit, slurry mixer is installed.
3. form pyramidal structure in the bottom, case pond of desulfurization and dedusting unit, by opening and closing the control of bottom, slurry tank pondThe savings that donsole realizes generation gypsum crystal retains and discharges, and gypsum is closed after discharging. Desulfurization and dedusting unit is logicalBe normally placed in the orlop of connection roller tower, realize handled easily.
(11) different efficacies of gas-liquid mixed roller and moisture film filter screen roller
Form two kinds of appellations and illustrate that it is same structure form operation method, same-action target effect not, de-In sulphur dust removing units, being called gas-liquid mixed roller is that the structural design of emphasizing filter screen forms the generation of mixing stirring effect,Emphasize that with Cress unit moisture film filter screen roller is by filter structure the neutralization of system end is sparseThe ability that fineness and moisture film generate, the functional effect of formation water film filtering combing overcurrent flue gas, can be according to differenceApplication and different phase form the design variation of surface structure.
2, the arrangement design of connection roller tower and clean unit arrangement and the action effect on connection roller tower
(i) the composition structure that joins roller tower comprises: column foot, pylon, slideway and on slideway, arrange install cleanChange unit, can facilitate the clean unit of location and installation standardized designs by slideway, can facilitate push-and-pull to install and getGo out maintenance, safeguard, clear up, change clean unit; Can slideway be installed with clean unit as coordinated integrates with againClean unit installation lift car frame can conveniently be realized aforesaid operations fast.
(ii) join the project organization that roller tower can form 1 layer or 2 layers or 3 layers or 4 layers, layer 2-3 is set conventionallyCan embody convenient with save land comprehensive, the length of the design number of plies, height and clean unit, width and at oneIn clean unit, be provided with several gas-liquid mixed rollers and form consideration relation, also can be conveniently according to height × length × wide taking advantage ofLong-pending, realize tower height degree and the phase co-conversion that takes up an area numerical value; Smoke treatment capacity greatly also can be set up in parallel 2 connectionRoller tower forms the visually integrated integral width sensation with widening connection roller tower.
If have spacious place or in cold area, or subjective desire, the clean unit of arrangement also canOne deck is set, or spread configuration in the groove excavating under ground level, after covering upper plate, do not affect traffic.
(iii) on connection roller tower, to connect how many internal structures and effectiveness effect are set, and design arrangementThe design of clean unit specification composition is very important, very exquisite.
The function of each clean unit that connection roller tower is arranged is described:
(1) ' the dedusting cooling unit ' starting most, namely vertical and high-speed deduster, this process will realize soonSignificantly dedusting cooling of speed, for desulfurization and dedusting unit provides the docking environment of high-quality, it can be built separately.
(2) ' the desulfurization and dedusting unit stage ' of backward arranging is absorbed in raising desulphurizing ability, efficiency, effect,And proceed the action effects such as particulate dirt dedusting, slurries absorption dissolving removal flue gas blackness, smell;
(3) ' neutralizing the sparse unit stage ' is backward absorbed in desulfurization and dedusting by the change of purification medium againThe follow-up purification in stage and effect improve or adsorb, neutralization, solubilizing reaction, sparse by neutralizingRemove remaining SO2, SO in overcurrent flue gas3, lime slurry droplet, reaction product (gypsum rain product)Water smoke particulate, fine particle purification, PM2.5 particle purifying etc.;
(4) be that special seizure removed last remaining PM2.5 compared with the purification target of the Cress unit of endGrain thing, absorption dilution is dissolved in dissolved waters such as removing coal smoke taste again, reaches the effect of clean emission.
(5) the dewatering unit of least significant end is realized and is removed droplet, also can add blower fan thereon and strengthen promoting air-flow.
Visible, can form the connection roller tower of different ability effects by arranging clean unit.
The pluses and minuses comparison of 3, spray column---bubble tower---connection roller tower, three large know-whies
(note: below relatively in (1)-(8), for description content and the data of spray column and bubble tower, all copyRecord " the technique comparison of spray column and bubble tower type wet desulphurization " article. )
(1) bubble tower has omitted spraying layer and slurry circulating pump, and zoneofoxidation and desulfurization reaction zone are incorporated into oneRise, the height of tower is reduced, the about 30m of desulfuration spray tower of 600MW unit; Bubble tower is 6m, butThe diameter of bubble tower list tower is large, and floor space is larger.
The tower height that connection roller tower forms under 2 layers of design approximately needs 5m, takes up an area few.
Bubble tower internal structure compared with complicated make installation difficulty and maintenance large, and easily produce fouling and stifledPlug. Because complex structure and flue gas will make SR large by slurry layer, the power of booster fan is also larger,But due to without slurry circulating pump, total electric power consumption and spray column are similar.
The above-mentioned contrast situation of connection roller tower clean unit is:
A. the structure of clean unit case pond and case lid is very simple, without fouling stop up may, flue gas overcurrent withoutDeliberately form specially gas-flow resistance; B. in clean unit, there are slurries to promote circulation, but without the lifting of spray columnThe interior pressure demand of spray that height and formation are huge; There are slurries to promote circulation but without all relying on a large amount of of its effectPromote; C. the formation efficiency degree effect of gas-liquid mixed effect energy force rate spray column of clean unit realizes numberDoubly improve; D. joining roller tower has increased the power consumption factor of gas-liquid mixed roller rotation, only needs a small amount of power consumption but drive,Whole power consumption under the identical detergent power effect of formation on year-on-year basis spray column can significantly reduce.
(3) the playpipe of the inner flue gas of bubble tower adopts pvc pipe, tedge and oxidation air pipe, slurry pipeBe fiberglass, therefore require the flue gas that enters bubble tower can not exceed 65 DEG C, cigarette before entering absorption towerGas carries out two-stage cooling, makes flue gas system complexity.
Connection roller method is to adopt newly-invented high speed dust removing device to realize fast cooling, and two-stage cooling can be simultaneously completeBecome, also can three grades, level Four cooling, dedusting simultaneously, Bubbling method need be changed and adopt high speed dust removing device.
(4) during due to bubble tower gas-liquid contact, be that ' gas phase ' high degree of dispersion is arrived in ' liquid phase ', haveLarge gas-liquid contact area, the efficiency of heat transfer and mass transfer is higher; And spray column gas-liquid contact process is by ' liquidPhase ' be distributed in ' gas phase ', the area of actual gas-liquid contact is less, and the relative bubble tower of mass-transfer efficiency is little.
Connection roller tower is that ' liquid phase is difficult to differentiate primary and secondary with gas phase, forms the mode shape that mutual dynamic fusion contactsState ', and in gas-liquid contact process, continue to keep high strength, HI high impact, highly dense gas-liquid mixed to connectThe state of touching, connection roll structure makes overcurrent flue gas without any the space of omitting, all by moisture film is intensive clear layer by layerWash; The hybrid mode of gas-liquid is operation repeatedly fast, and purification efficiency is high, on year-on-year basis higher than the bubble of Bubbling methodThe contact mixing efficiency of floating-upward process, especially significantly higher than spray process.
(5) because gas-liquid contact area in bubble tower is larger, so this device is to desulfurization absorbent lime stoneParticle diameter is less demanding, and (0.63 μ m) by 250 orders for General Requirements 90%; Spray column requires 90%By 325 orders, (0.44 μ m);
In comparison aspect this, connection roller tower can form quite with bubble tower 250 object fineness requirement.
(6) bubble tower system, because mass transfer effect is good, can be moved under low pH value, is generally 3.5-4.5,Low pH value is conducive to the crystallization of gypsum, and the gypsum crystal particle therefore generating is large, average grain diameter 70 μ m, easilyIn dehydration, make the quality of gypsum better, and in spray column, gypsum is broken because circulation produces, the average particle of gypsumFootpath is 30 μ m.
Connection roller tower, in the also formation advantage of comparable bubble tower aspect this, forms consistent advantageous effect.
(7) bubble tower is different with spray column control mode, when inlet flue gas amount and sulfur dioxide in flue gas contentWhile changing, bubble tower is mainly by regulating the regulation and control of plasm PH value and liquid level, that is: playpipeSubmergence highly meets desulfuration efficiency, and liquid level is controlled, to adapt to different coals; Also can fit preferably simultaneouslyAnswer the variation of unit load.
The mode of connection roller tower Adaptive change has four kinds: 1. flow or the rotation of the regulation and control pouring circulatory system fastThe flow of Sprayer Circulation system, regulation and control increase the pressure of the circulatory system, can huge increase purify intensity and efficiency;2. regulate filter screen rotary speed to improve ability; 3. regulate the pH value of clean unit solution; 4. above three kinds of sidesFormula coordinates employing.
(8) flue gas has the effect of similar water film dedusting when bubbling in liquid, and therefore bubble tower is to flue gas ash removalBetter effects if, especially more obvious to the following dust capture effect of 1 μ m (micron).
The dust collection capacity effect comparison of three kinds of desulfurizing towers:
A, spray process better dust removal effect, the catching and efficiency 40% of 1 μ m dust;
B, Bubbling method dust removing effects are fine, and 1 μ m dust is caught and efficiency can easily reach 80%;
C, connection roller tower dust removing effects are fabulous, the capture rate energy of the following particle of 0.25 μ m (PM2.5)Power reaches more than 95% easily, because above-mentioned A, B, data all refer to the formation of a desulfurizing tower overcurrent processData, connection roller tower is by the dedusting of whole series connection clean unit process.
Prove by room space simple experiment the result, reach under six grades of foul pollutions at extraneous haze,The haze and the coal smoke smell that in the sealing room purifying by moisture film method, enter are eliminated substantially, by turnover roomThe sharp contrast that space forms proves, the muddy explanation of 3 flavescence of purifying waste water, airborne haze, coal smoke,Particulate, SO2All incorporate in water.
(9) the water smoke that the mode of action of top pouring and rotary spray and effect are significantly better than spray column is dispersedFreely falling body effect, connection roller tower clean unit is that slurries are evenly distributed on the wire side of gas-liquid mixed roller, logicalCross the supplementary of moisture film in rapid osmotic formation roll surface filter screen and retain and quick-replaceable discharge, liquid film filter screen is initiativelyAttack overcurrent flue gas.
In filter structure, for the action effect that forms moisture film be: screen support slurries retain and form moisture filmFormation condition and distribution location; The moisture film retaining in filter screen forms to amplify to adsorb holds back pollutantEffect, also formed to impact by overcurrent and change moisture film, reject to filter and hold back effect, the moisture film of pollutantJointly play a role with filter screen. This only relies on the soft contact action side of floating indefinite water smoke in the side of spray on year-on-year basisFormula, connection roller tower is to be greatly better than spray column.
(10) join roller tower structure parts in the unique advantage of producing, building, applying, safeguard
Parts are produced: by modularization, standardization, the Seriation Design mode of production of clean unit, can makeProduction process simple and direct laborsaving, raise the efficiency, reduce costs, also can guarantee mass effect stable and consistent, withoutOften detect separately authentication test;
Transport is built: the easy decomposition texture of modularized design of connection roller tower clean unit, realize convenient transport peaceThe operation of dress, can significantly improve the efficiency of construction, significantly reduce cost of transportation;
Applicating maintenance: by standardized modular design can facilitate conventional dismounting and change clean unit, can be conventionalProperty regularly check that the major break down of safeguarding prevention clean unit occurs, also can realize that easily to send out malfunctioning module routine standbyWith, catastrophic failure is changed clean unit and can be resumed production.
(11) join roller tower and can make the convenient increase of desulfurization and dedusting ability: if steam coal dustiness increases, sulfur contentChange in long term source quality, can add in connection roller tower that several clean units just can realize Adaptive change.
Below (9)-(11) unique advantage is that spray process, Bubbling method, spiral board desulfurizing tower do not possess; Connection rollerTower is not found the formation of comparison shortcoming, becomes classic desulfurizing tower.
Two, high speed dust removing device (or claiming: dedusting cooling, purifying unit)
Another invention technology the present invention relates to is that the brand-new kind dust catcher device that is called high speed dust removing device producesProduct, have vertical, horizontal type, and vertical and high-speed deduster is the key composition in connection roller method process system.
(1) structure of vertical and high-speed deduster and effect
Vertical and high-speed deduster adopts in the field with cooling demand conventionally.
The central rotation structure of vertical and high-speed deduster be by multiple moisture film filter screen roller levels overlap andThe fixing integral structure body that forms of middle axial series of overlay network roller, is called: filter screen concatermer, on itNet roller can, according to arranging 2 layers, 3 layers, 4 layers or more multi-layered except the requirement of dust quantity and purifying rate, arrange layerAlso determining of number determined and (as: required the PM10 in overcurrent flue gas according to the requirement of flue gas overcurrent cooling abilityAbove dustiness reduces by 50%, reduces the temperature to 85 DEG C etc.); The number of plies setting of moisture film filter screen roller and wire sideArranging of density, thickness, diameter and pouring, water spray changes formation substantial connection, and can be by above-mentionedThe intervention of relation factor changes, and the regulation and control at any time that realize detergent power, cooling ability change.
Between the moisture film filter screen roller of each layer of filter screen concatermer, certain insulating space is set, at insulating spaceInside be provided with the dividing plate that downstream and current can be realized separate isolation, by spacer function forms purify andThe step difference of cooling level forms, and that is to say vertical and high-speed dedusting at the dividing plate of casing foot and topmostThe upper and lower enclosure of device, this explanation upper and lower enclosure structure is identical with diaphragm structure described below.
Dividing plate is the trapezoidal cylinder state of inside and outside circle, and low gradient form is prolonged on high in the middle of forming, limit, everyIn the middle of plate, be air inlet, be called gas outlet at lower casing; In the shell of the edge of dividing plate and high speed dust removing deviceWall forms a fixed connection; The bearing that net roller concatermer is set in the middle of casing or dividing plate air inlet air outlet props upSupport support.
Having under cooling and heat exchange quantity of heat given up demand, wall added heat exchange is arranged pipeline in the enclosure,Therefore dividing plate base just forms and is connected with the heat exchange pipe of arranging, dividing plate base and arrangement sky, pipeline junctionThe △ so forming arranges leak just becomes the flow pass of dust-containing water, and channel leak can be by upper strata to lower floor progressivelyAdd each layer of dust-containing water collecting of ambassador and progressively strengthen outflow space, each layer of dust-containing water collects the tight attached heat of outflow meeting and hands overThe effect of heat exchange is reached on replace tubes road.
Filter screen concatermer drives the rotation that forms fair speed in its underpart by motor, drive motors passes through toothType of drive is shifted in the transmission of wheel or chain, and motor is not directly arranged in the bottom of net roller concatermer;
Bottom centre position at filter screen concatermer arranges water inlet, and spray water inlet is led to filter screen by water inletThe each layer of rotary spray disk (25) of concatermer produces the effect of the upper wire side of spray, and rotary spray disk is protrudingCircular configuration has the effect of diffusing air current, and rotary spray disk and filter screen concatermer are that integrated design is filledFull shower water, arranges water sprinkler upper all distribution of each layer of moisture film filter screen roller; The diameter of dividing plate air inlet with revolveTurn spray disk diameter roughly suitable.
Because moisture film filter screen roll structure body is constantly all at High Rotation Speed, therefore water sprinkler adopts several water-supply-pipesStructure formation waterfall type continuous effluent effect can be taken constantly the even flushing pouring of the filtering net surface of rotation into account and doWith formation, also can adopt the water sprinkler of profile.
The present invention for the description of vertical and high-speed deduster operation method is: high dust high heat flue gas is by drawingBlower fan is carried and is entered in casing from the top air inlet of high speed dust removing device, runs into the shape that stops of rotary spray diskBecome the shunting flue gas is disperseed to the edge of rotary spray disk, naturally just spray with rotary spray disc circumferenceRotary spray water is met and is merged, and flows out rushing of water by sink top water sprinkler in addition of the gravity of rotation spray water outletBrush the upper surface that makes flue gas+dust+current together jump on horizontally disposed moisture film filter screen roller, the dust in flue gasHeld back formation wet type state by moisture film filter screen and produced ' dust-laden moisture film ', dust-laden moisture film relies on top Continuous FlowThe souring of water is passed through moisture film filter screen roller and is arrived on dividing plate below, and the slope current of suitable dividing plate is to edge; WithTime dust-laden moisture film in filter screen under the effect of rotation spray trickle centrifugal force, make in dust-containing water transverse crossing filter screenPortion's wire side is thrown to casing inner wall, and dust-containing water existence is removed in crossing of two kinds of cleaning ways of transverse and longitudinal completely.
Dust-laden current converge in the bottom of domatic dividing plate, are flowed at high speed dust removing device bottommost and are arranged by leakAsh settling basin in precipitate, desirable go out dust processing, sucking-off water recycle.
In the situation that 2 layers to 4 layers or more multi-layered several moisture film filter screen roller are set, by the effect of dividing plate layer by layerRepeat above-mentioned dedusting temperature reduction technology process; That is: the flue gas after top layer dedusting cooling, collects by dividing plateFlue gas must enter from the air inlet of lower one deck dividing plate again the running space of next moisture film filter screen roller, and flue gas alsoTo form shunting after first running into the straight tackling of rotary spray disk arranging at lower layer of water membrane mesh roller centerDisperse, run into rotation spray trickle ..., repeat said process effect.
After the rinse spray dedusting cooling of flue gas by multilayer water membrane mesh roller, defeated from gas outlet, deduster bottomGo out, deliver into desulfurization and dedusting unit by pipeline and carry out desulfurization.
The waste heat of high speed dust removing device can be realized and be collected output by heat exchanger, or by cold water (recirculated water)After realizing direct heat circulation exchange in input high speed dust removing device heat exchange pipe, export. In sedimentation basin, newly flow outDust-containing water also can accumulate specially, also can form heat exchange, or directly realize UTILIZATION OF VESIDUAL HEAT IN.
The filter mesh layer design density of the moisture film filter screen roller of series connection is more and more thinner from top to bottom, the dust collection capacity of formationWith fineness rank also can be more and more higher, this has also been avoided big particle to stop up careful filter screen and has formed filter net jam.
After passing through for the first time moisture film filter screen roller, just can stop and realize oarse-grained separation by dividing plate, removeLarger particle, flue gas passes through after the moisture film filter screen roller that lower one deck density is higher again, can form higherPurifying rate obtain, pass through after three layers to four layers moisture film filter screen roller roll surface, more than just can substantially removing PM20Particle, realizes PM2.5 particle and realizes part removal; Temperature reduces also significant change layer by layer.
If in the situation that dedusting flue gas capacity requirement is very large, can be set up in parallel several vertical and high-speed dedustingsDevice moves jointly, with the variation regulation and control that conveniently realize purification capacity, avoids using large diameter vertical and high-speedDeduster affects the advantage performance of structure function effect.
(2) structure of horizontal high-speed deduster and effect
The operation operation principle of each clean unit arranging on desulfurizing tower and vertical and high-speed deduster are roughlyIdentical, be all by ' flue gas enters → incorporate the solid dirt → moisture film dust-laden → top pouring of nethike embrane → wet method→ rotary spray → dirt water throws away out → flows out deposition ' dustproof function mode.
Therefore, the clean unit on connection roller tower also all belongs to the variety classes of high speed dust removing device, can be referred to as:Horizontal high-speed deduster, its typonym comprises: top pouring type horizontal high-speed deduster, rotary spray typeHorizontal high-speed deduster; And in same high speed dust removing device, be set up in parallel 2 or 3 or 4 or moreMulti-joint roll shape pouring or the spraying type horizontal high-speed deduster etc. of individual moisture film filter screen roller, this causes the present invention to proposeThe morphotype of high speed dust removing device and the range of choice of specification kind be very wide in range.
The present invention is axially establishing according to moisture film filter screen roller for naming method vertical, horizontal high-speed dedusterPut to form and distinguish, that vertical and high-speed deduster is applicable to is relatively large, have that dedusting+cooling+exhaust-heat absorption exportsUnder integrated purposes, adopt, be especially applicable to wet method sulphur removing and dust removing field of purification, therefore in connection roller method entire systemIn design, it also can be described as: dedusting cooling unit.
(3) many-sided huge advantage and the extensive use of high speed dust removing device
(1). the name of high speed dust removing device comprises 3 implications: High Rotation Speed, high speed dust removing, cooling at a high speed.
The action principle method of high speed dust removing device and substantive characteristics are also to attempt by efficiently fully powerful in factGas-liquid contact realize dedusting efficiency and improve, therefore say the action method of high speed dust removing clarifier and clean unitBe the same with structural behaviour, therefore the innovation advantage effect of its formation is also the same, is to fill up dedusterThe blank of kind is also the current deduster kind of extensively needing badly.
High speed dust removing device by simple, efficient, labour-saving particulate dirt is caught Principle Method can Quick Catch bagDraw together any disposal of pollutants dust particle of 1 micron-PM10-PM2.5-PM0.1, can not form secondary and raiseDust pollution; It is caught area and just can be had very large capture ability by less, and this is because moisture film is considered netAfter catching dust, understand degradation at once, dust removal process moment completes overall process, long-pending without the corona of electric cleanerDirt+add cleaning beating+deashing repetitive process, wire side is met ash-laden gas in dustless state all the time, improves speedMore than spending ten several times, therefore can make equipment volume, investment, steel consumption, maintenance expense with Large-sized Electrostatic Precipitator comparisonWith obtaining several times to minimizings more than ten several times.
(2). with electric cleaner comparison, the characteristic that the dust of high speed dust removing device is held back dust collection performance and dust has nothing to do,The impact of the factors vary such as incomparable resistance, gas temperature, humidity, high speed dust removing device wire side can all be held back electricityThe particulate that deduster cannot be caught. Moisture film filter screen roller is to act in all contents that contain of whole flue gas, makesUse effect all-the-time stable, technology is simple, easily controls, and produces and does not have noisy factor;
And the mode of action of electric precipitator corona separation dust is act on powder dust particle own, instead of doFor whole flue gas, therefore PM2.5---PM10 particle electric cleaner is to obtain seizure by corona, even if larger particulate is to be also difficult to catch again; Moreover the design effect of electric cleaner and practical gapLarger, easily produce fluctuation, after the use regular period, dust removing effects is on the way down, discharge severe overweight.
(3). electric cleaner is very high to manufacture, installation, stay-in-grade technical requirement; After operation a period of time,Electrode may deform, and causes electric field change, and efficiency of dust collection reduces.
And that technology is installed and used in the manufacture of high speed dust removing device is simple, its almost low without pressure drop, energy consumption, also without electricityEngineering construction, control technology, the application technology of deduster complexity and the numerous reasons that cause fault to occur.
(4). high speed dust removing device is all wet processing with the clean unit on connection roller tower, two purifications of dedusting and desulfurizationTemperature, the humidity conditions in space can realize a smooth transition, and high speed dust removing device can pass through regulating and controlling temperature, dust removal efficiencyDesign meet the working condition requirement of desulfurization and dedusting unit.
(5). the high speed dust removing device in different field application can be by the mode Adsorption of regulator solution medium notSame specific pollutant, such as: in high-efficiency dust remover, add washing agent, just can effectively remove fast kitchen oilSmoke particle and the smell that reduces discharge flue gas, the mist of oil that the adsorbable dissolving of foam is minimum, and electric cleaner can onlyForm the removing method of kitchen soot particles adhesive electrode, and helpless for the smell small fume mist of discharge,The oil smoke ratio of discharge is very large.
(6). the formation advantage of high speed dust removing device comparison sack cleaner is also fairly obvious, dust removing effects and energy-conservation effectFruit, all significantly higher than sack cleaner, does not have the loaded down with trivial details problem of sack cleaner yet, comprising: purify overcurrentAir-flow efficiency is poor, produce large drag forces and huge energy consumption, process variation is unstable, the regular deashing of need, secondaryPollute, filtrate quality do not pass a test, cloth bag consumables cost limits with fume high-temperature, dust explosion, PM10---PM2.5 superfine particulate matter cannot be removed etc.;
The performance of high speed dust removing device is also significantly better than cyclone dust collectors, water dust scrubber, wet dust collectorApplication mode effect and detergent power effect.
(7). the dedusting cleannes of high speed dust removing device and ability effect are the highest, the fastest in all dedusters;The cost performance of high speed dust removing device is also the highest, and at coking industry, cement industry, steel and iron industry etc. relates to workThe fields such as industry stove adopt high speed dust removing device can obtain the high-quality effect of ' energy-conservation+to reduce discharging ', are extensive repliesThe great innovation sharp weapon of PM2.5 disposal of pollutants.
Present Thermal Power factory does not have economic and practical deduster kind to select kind, has therefore produced that ' electricity bag two closesOne deduster ' product, it is by both advantage unifications, and also by shortcoming unification, and high speed dust removing device is only by advantageMerge, both shortcomings are removed, the laborsaving high-efficiency cleaning of saving trouble reduces costs especially on year-on-year basis, and it has eliminated cloth bagThe powerful resistance power consumption of deduster, has also eliminated electric cleaner ' electric-tiger ' title.
(8). numerous because of above-mentioned advantage reason, in connection roller method desulfurization dust-removing technique system, applying high speed dust removing device canMake system process form brand-new advantageous effect.
Three, connection roller method desulfurization dust separation system
The 3rd the important invention the present invention relates to is to be called connection roller method desulfurization dust separation system, its main body workProcess flow is: boiler smoke → air-introduced machine → high speed dust removing device → connection roller tower [comprises: (rank, desulfurization and dedusting unitSection) → neutralize sparse unit (stage) → Cress unit (stage) → dewatering unit] → chimney is clearClean cigarette high altitude discharge or at spacious region low-altitude discharged, system body core apparatus is high speed dust removing device+connectionRoller tower.
Advantage and the feature of connection roller method desulfurization dust separation system:
If 1. to ' spray column and connection roller tower ', ' electric cleaner and high speed dust removing device ' ' spray process technique systemSystem and connection roller method process system ' just can know and find out after comparing: the serious haze in many regions and holdingOne of important origin cause of formation that continuous PM2.5-PM10 pollutes is more than 90% big-and-middle-sized coal-burning boiler, the combustion of accountingCoal pit stove has adopted the technique building form of ' electric cleaner+spray column '.
Other 10% accounting comprises employing sack cleaner, spiral board desulfurizing tower etc. In haze, followDense coal smoke taste proves, spray column is being removed fine particle and desulfurizing tower removal SO2、SO3Omission skyBetween larger, efficiency is low, electric cleaner does not have ability to remove PM10-PM2.5, therefore only by an overcurrentSpray column is airborne release, must cause many pollutions cannot control the effect that discharge produces.
Can eliminate spray process completely for SO with connection roller method process system is alternative2、SO3Contact omit with forThe omission emission problem of superfine particulate matter, spray gypsum drop particulate.
2. join roller method process system and can realize each purification that the reason of stable clean discharge is its series connectionUnit is also horizontal high-speed deduster, therefore joins roller method system and is carrying out high efficiency, high purification from the beginning to the endThe dedusting of rate, sulphur removal, demist, except smell, except desulfurization is residual and reaction product, from clean unit insideStructure is seen the omission that connection roller method does not purify, and cleaning medium progressively, and it has become very GGHJust unnecessary useless program.
3. ' neutralizing sparse unit → Cress unit ' program that joins roller method be reach stablize dustless, without sulphur,The key condition of corrosion-free drop discharge, is also new things, and the working media of Cress unit is cleanWater should often change, can change water for dedusting cooling unit, or prepare for lime stone slurry.
The process such as spray column, Bubbling method cannot adopt the sparse and Cress program that neutralizes, becauseEffect is extremely low, expense is high.
4. because connection roller method clean unit internal structure is the quick work of repeat attack overcurrent flue gas on the spot of activeBy mode, therefore the flue overflow section in clean unit is without the deliberately coarsening that forms spray column, flue gasIntensive overcurrent more can effectively be brought into play the method for operation advantage of clean unit, eliminates the turbulent-flow conditions of spray column;
5. as thought, detergent power design is not enough, can suitably increase the magnitude setting of desulfurization stage clean unit,This is consistent with Bubbling method principle of adjustment and control, mode, effect.
Brief description of the drawings
Fig. 1 is rotary spray type list roller desulfurization and dedusting unit airflow direction generalized section
Fig. 2 is top pouring type four roller clean unit airflow direction generalized sections
Fig. 3 is rotary spray type four roller high speed dust removing device airflow direction generalized sections
Fig. 4 is that a kind of moisture film filter screen roller diameter is to cross-sectional view
Fig. 5 is the net roller pars intermedia generalized section of top pouring type clean unit uprush direction
Fig. 6 be vertical and high-speed deduster middle section structure and wherein the air water method of operation show schematic diagram
Fig. 7 is a kind of connection roller tower and internal gas flow running schematic diagram that is set to 3 layers
Fig. 8 is the process route view of the main functionality device of connection roller method desulfurization dust separation system
Description of reference numerals
1. clean unit and unit casing; 2. rotation spray water flow direction in net roller; 3. clean unit gasCirculation road interface; 4. flow of flue gas direction; 5. baffle plate; 6. air-flow division board; 7. slurry tank pond;8. precipitation gypsum crystallization is discharged; 9. concave circular arcs body; 10. moisture film filter screen roller or gas-liquid mixed roller; 11.Rotary spray central siphon; The 12. top pouring fluid mouths of pipe; The axle of 13. roller nets; 14. roller stratum reticulares; 15.Roller network framework; 16. drive gas-liquid mixed roller motor; 17. pouring circulatory system upper pipelines; 18.Add pipeline; 19. add pump; 20. pouring circulating pumps; 21. slurries storage pools or moisturizing storage pool;22. air delivering pipelines; 23. empty limit arrows represent the motion mode of overcurrent flue gas; 24. dividing plate air inlets; 25.The rotary spray disk of filter screen concatermer; 26. dividing plates and casing; 27. watering water-supply-pipe and water sprinklers;28. horizontal moisture film filter screen rollers; The heat-exchange tube of 29. dense arrangement; 30. hollow arrow show that water sprinkler goes outThe motion mode of water; 31. thin arrows show the motion mode of rotation spray trickle; 32, motor; 33,Gas outlet; 34. gear transmission structures; 35. filter screen concatermers; 36. dust-containing water sedimentation basin and circulationsWater extraction is got pond; Tube connector Shang Xia 37.; 38. Cress unit; 39. roller pylons; 40. purifyAirflow direction in unit; 41. decoration baffles; 42. desulfurization and dedusting unit; In 43. and sparse unit;44. coal-burning boilers; 45. air-introduced machines; 46. duct type heat exchangers; 47. vertical and high-speed dedusters; 48.Connection roller tower; 49. chimneys.
Claims (7)
1. a connection roller tower apparatus, is characterized in that: it is in series by many clean units (1),Be followed successively by dedusting cooling unit → desulfurization and dedusting unit → neutralize sparse unit → Cress unit → dehydrationUnit; Attack and regulation and control and connecing by the clean unit of connecting by the active drive of clean unit internal structureContinuous operating type is reached stable clean emission effect;
The structure of clean unit is to be coordinated by gas-liquid mixed roller (10) and fluid box pond (7), clean at oneChange in unit one or more gas-liquid mixed rollers can be set, gas-liquid mixed roll shaft is case pool wall outside and motor (16)Connect and drive, can drive same purifications singly with 1 or 2 motors by chain, belt pulley or gear driveGas-liquid mixed roller in unit together moves; On moisture film filter screen roller, add the top pouring circulatory system; Gas-liquid is mixedClose roller under high-speed cruising state, the liquid outlet of the pouring circulatory system is located in central shaft tube (11), passes throughThe intensive hole formation rotary spray effect that distributes and arrange on central siphon, forms the rotary spray circulatory system.
2. the clean unit device of roller tower as claimed in claim 1, is characterized in that: at fluid boxTop, pond (7) arranges case lid and merges with case pond, and case lid inner top structure is spill contour body (9),In clean unit, multiple moisture film filter screen rollers arranged side by side can be realized circulation with a circulation motor and lift line, and it is newThe input mode that adds the slurries of clean unit is to water the circulatory system or rotary spray cyclic system by topSystem pipeline realize input add operation, structure be connection roller tower (48) bottom arrange slurries storage pool orSupplement storage pool (21), storage pool setting add pipeline (18) with add pump (19), add pipeline withThe upper pipeline (17) of the pouring circulatory system connects and forms compounding practice.
3. the clean unit device of roller tower as claimed in claim 1, is characterized in that: it is in rotationMoisture film filter screen roller bottom in fountain clean unit arranges air-flow division board (6); Purify single at rotary sprayAir inlet in unit and gas outlet place arrange baffle plate (5).
4. a vertical and high-speed deduster, is characterized in that: its center rotational structure is to be filtered by multiple moisture filmsNet roller (28) level overlaps and forms integral structure body, above-mentioned being called in middle axial restraint series connectionBetween each layer of moisture film filter screen roller of filter screen concatermer, there is certain insulating space, in insulating space, be provided with and makeThe dividing plate (26) that downstream current separate, is upper and lower enclosure at the foot of casing and the dividing plate of topmost,Dividing plate is that in the middle of the trapezoidal cylinder state of inside and outside circle forms, flash prolongs the low gradient, is air inlet in the middle of dividing plateMouth (24), is called gas outlet (33) at lower casing; The outer casing inner wall of the edge of dividing plate and high speed dust removing deviceForm a fixed connection; Having under cooling and heat exchange quantity of heat given up demand the attached heat-exchange tube of wall in the enclosureArrange pipeline, therefore dividing plate base is connected natural formation △ arrangement leak with arrangement pipeline inner wall just becomes dust-ladenThe flow pass of water; Filter screen concatermer (35) drives the rotation that forms fair speed in its underpart by motor,Drive motors (32) makes motor not directly at filter screen string by the transfer type of drive of gear (34) or chainConjuncted bottom arranges; The axle of filter screen concatermer is set in the middle of casing or dividing plate air inlet air outlet (33)Hold supporting bracket; Bottom centre position at filter screen concatermer arranges water inlet, and water inlet is passed through in spray water inletLead to the effect of rotary spray disk (25) the generation spraying net roll surface of each layer of filter screen concatermer, rotary sprayDish has diffusing air current effect for convexity structure, and rotary spray disk and filter screen concatermer are integrated to be filled in itFull shower water; Upper all distribution at each layer of moisture film filter screen roller arranges water sprinkler (27); Dividing plate air inlet (24)Diameter and the diameter of rotary spray disk (25) roughly suitable.
5. an operation method for vertical and high-speed deduster, is characterized in that: high dust high heat flue gas (23)By the conveying of air-introduced machine (45), in air inlet (24) input casing, run into rotary spray disk (25)Stop shunting, make flue gas disperse to the edge of rotary spray disk the rotation spraying with rotary spray disc circumferenceShower water (31) meets, and flows out washing away of water (30) by sink top water sprinkler in addition of gravity, makes cigaretteGas+dust+current together jump on the side of horizontally disposed moisture film filter screen roller (28), and smoke dust is by moisture filmFilter screen roller is held back formation wet type state and has been produced ' dust-laden moisture film ', the continuous flowing water in dust-laden moisture film dependence topSouring is passed through moisture film filter screen roller and is arrived the slope current of the upper suitable dividing plate of dividing plate (26) below to the limit of dividing plateEdge; Dust-laden moisture film in filter screen makes dust-containing water to passing through filter screen under the centrifugal action of rotation spray trickle simultaneouslyCasing inner wall is thrown in inside, and dust-containing water existence is removed in crossing of two kinds of cleaning ways of transverse and longitudinal completely; Dust-laden currentBottom at domatic dividing plate is converged, and it is heavy to flow into by leak in the ash settling basin arranging at high speed dust removing device bottommostForm sediment, desirable go out dust processing, sucking-off water recycle;
In the situation that 2 layers to 4 layers or more multi-layered several moisture film filter screen roller are set, by the effect of dividing plate layer by layerRepeat above-mentioned dedusting temperature reduction technology process; Flue gas falls by the rinse spray dedusting of above-mentioned each layer of moisture film filter screen rollerWen Hou, from the output of gas outlet, bottom, delivers into desulfurization and dedusting unit by pipeline; The moisture film filter screen of series connectionThe filter mesh layer design density of roller is more and more thinner from top to bottom; In the situation that udst separation flue gas capacity is very large,Be set up in parallel several high speed dust removing devices and jointly move, with the variation regulation and control that realize purification capacity.
6. a horizontal high-speed deduster, is characterized in that: its internal structure and the method for operation and connection roller towerClean unit is described identical, and type class and title comprise: top pouring type horizontal high-speed deduster, rotationSpraying type horizontal high-speed deduster; And in same high speed dust removing device casing, be set up in parallel 2 or 3 orMulti-joint roll shape pouring or the spraying type horizontal high-speed deduster of 4 or more moisture film filter screen rollers.
7. a connection roller method desulfurization dust separation system, is characterized in that: its system is boiler smoke → drawThe clean clean cigarette high altitude discharge of blower fan → high speed dust removing device → connection roller tower → chimney or at spacious region low-altitude dischargedComposition main process flow process, system body core is high speed dust removing device+connection roller tower apparatus.
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| CN109701376A (en) * | 2019-02-14 | 2019-05-03 | 南通春光自控设备工程有限公司 | A kind of denitrating flue gas desulfurization dust-removing technique |
| CN107543311B (en) * | 2017-07-20 | 2019-11-15 | 王胜 | A kind of efficient energy saving and environment friendly boiler |
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| CN112121543A (en) * | 2020-09-21 | 2020-12-25 | 南京大学 | Self-purification air purifier filter screen based on high-performance wetting agent and preparation method thereof |
| CN113720159A (en) * | 2021-09-06 | 2021-11-30 | 广西万仕智稀贵金属科技有限公司 | Forehearth-free blast furnace and antimony-gold concentrate treatment method using same |
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2016
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