SI9720030A - Device for discharging and distributing an absorbent material in a flue gas duct - Google Patents
Device for discharging and distributing an absorbent material in a flue gas duct Download PDFInfo
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- SI9720030A SI9720030A SI9720030A SI9720030A SI9720030A SI 9720030 A SI9720030 A SI 9720030A SI 9720030 A SI9720030 A SI 9720030A SI 9720030 A SI9720030 A SI 9720030A SI 9720030 A SI9720030 A SI 9720030A
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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
- B01D53/508—Sulfur oxides by treating the gases with solids
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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
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
Abstract
Description
Naprava za dovajanje in razdelitev absorbirnega materiala v vod zgorelih plinovApparatus for supplying and distributing absorbent material into the combustion gas line
Predloženi izum se nanaša na napravo, razporejeno v bistvu v navpičnem vodu zgorelih plinov, v katerem se mora zgorele pline, vsebujoče plinaste polutante kot npr. žveplov dioksid, voditi navzgor, tj. na napravo za dovajanje in razdelitev določenega absorbirnega materiala v vod zgorelih plinov, pri čemer je omenjeni absorbirni material reaktiven s plinastimi polutanti v zgorelih plinih in se ga mora med čiščenjem zgorelih plinov vnesti v te pline v vlažnem stanju, da bi se plinaste polutante pretvorilo v ločljiv prah.The present invention relates to a device arranged essentially in a vertical line of combustion gases in which combustible gases containing gaseous pollutants such as e.g. sulfur dioxide, lead upwards, i. to a device for supplying and distributing a certain absorbent material into the combustion gas line, said absorbent material being reactive with the gaseous pollutants in the combustion gases and having to be introduced into these gases in the wet state during the purification of the combustible gases in order to convert the gaseous pollutants into separable dust.
Kadar je potrebno plinaste polutante, kot npr. žveplov dioksid, izločiti iz zgorelih plinov, se pline vodi skozi vod zgorelih plinov, kjer se določen absorbirni material, ki je reaktiven s plinskimi polutanti, v vlažnem stanju vnese v zgorele pline, da bi se plinaste polutante pretvorilo v ločljiv prah. Zgorele pline se nato vodi skozi izločevalnik prahu, v katerem se prah loči od zgorelih plinov in iz katerega se odvede tako očiščene zgorele pline. Del prahu, izločenega v izločevalniku prahu, se vodi v mešalnik, kjer se ga zmeša in navlaži z vodo, nakar se ga reciklira kot absorbirni material, tako da se ga vnese v zgorele pline skupaj z dodatkom svežega absorbenta. Kot sveži absorbent se v splošnem uporablja gašeno apno (kalcijev hidroksid).When gaseous pollutants, such as e.g. The sulfur dioxide extracted from the combustion gases is passed through the combustion gas line, where a certain absorbent material that is reactive with the gas pollutants is introduced into the combustion gases in the moist state to convert the gaseous pollutants into separable dust. The combustion gases are then passed through a dust separator in which the dust is separated from the combustion gases and from which the combustion gases thus purified are removed. Part of the dust extracted in the dust separator is taken to a mixer, where it is mixed and moistened with water, and then recycled as absorbent material, so that it is introduced into the combustion gases with the addition of fresh absorbent. Lime (calcium hydroxide) is generally used as a fresh absorbent.
Da bi se zgorele pline učinkovito očistilo, je seveda bistveno, da se absorbirni material dovaja zgorelim plinom kot homogeno zmes, v kateri je vlaga enakomerno porazdeljena. Naprava, ki je zlasti prednostna za izdelavo homogene zmesi absorbirnega materiala in vode pri zgoraj opisanem postopku čiščenja zgorelih plinov, je opisana v W0 96/16727. Ta mešalna naprava obsega vsebnik, v katerem se tekom mešanja določen absorbirni material fluidizira. Vsebnik ima v vod zgorelih plinov segajoč izstopni konec za dovajanje homogene zmesi absorbirnega materiala in vode skozi preliv v vod zgorelih plinov.In order to effectively purify the combusted gases, it is of course essential that the absorbent material be supplied to the combustion gases as a homogeneous mixture in which moisture is evenly distributed. A device particularly advantageous for producing a homogeneous mixture of absorbent material and water in the combustion gas cleaning process described above is described in WO 96/16727. This mixing device comprises a container in which a certain absorbent material is fluidized during mixing. The container has an outlet end in the combustion gas line for supplying a homogeneous mixture of absorbent material and water through the spillway into the combustion gas line.
Da bi se zgorele pline učinkovito očistilo, je tudi bistveno, da je vlažen absorbirni material enakomerno porazdeljen v zgorelih plinih po celotnem prečnem prerezu voda zgorelih plinov. Takšna homogena porazdelitev pa pri zgoraj opisani mešalni napravi s prelivom ni dosežena.In order to efficiently clean the combustion gases, it is also essential that the wet absorbent material is evenly distributed in the combustion gases throughout the cross-section of the combustion gases. However, such a homogeneous distribution is not achieved with the overflow mixer described above.
Cilj predloženega izuma je torej ustvariti napravo, ki se jo da uporabiti tako z zgoraj opisano mešalno napravo kot tudi z drugimi mešalnimi napravami za dovajanje vlažnega absorbirnega materiala v vod zgorelih plinov, pri čemer se absorbirni material dobi iz mešalne naprave, in razdeljevanje le-tega na homogen način po celotnem prečnem prerezu voda zgorelih plinov.The object of the present invention is therefore to provide a device that can be used with both the mixing device described above and other mixing devices for supplying moist absorbent material to the combustion gas line, whereby the absorbent material is obtained from the mixing device and in a homogeneous manner throughout the cross-section of the combustion gases.
Ta cilj je po predloženem izumu dosežen z napravo, ki je uvodoma omenjene vrste in ki je karakteristična po tem, da obsega vsaj eno razdeljevalno ploščo, potekajočo poševno navzdol v omenjeni vod zgorelih plinov in na svoji zgornji strani prirejeno za sprejem vlažnega absorbirnega materiala, pri čemer razdeljevalna plošča obsega dva dobro definirana stranska robova, ki, gledano v smeri nagiba, konvergirata poševno navzdol.This object is achieved according to the present invention by a device of the aforementioned type, characterized in that it comprises at least one distribution plate extending obliquely downward into said combustion gas line and arranged on its upper side to receive a wet absorbent material, at wherein the distribution plate comprises two well-defined lateral edges which, when viewed in the tilt direction, converge obliquely downward.
Naprava ima prednostno vsaj dve nasproti ležeči si razdeljevalni plošči.The device preferably has at least two opposite distribution panels.
Pri prednostni izvedbi je dovajalna enota, od katere strle razdeljevalne plošče poševno navzdol, razporejena središčno v vodu zgorelih plinov, da dovaja navlažen absorbirni material na razdeljevalne plošče.In a preferred embodiment, the feed unit, from which the steep distributor plates are slanted downwards, is arranged centrally in the combustion gas line to supply the moistened absorbent material to the distributor plates.
Razdeljevalne plošče so prednostno trikotne oblike.Divider plates are preferably triangular in shape.
Izum je v nadaljevanju detajlneje opisan s sklicevanjem na priložene skice, kjer kaže sl. 1 shematski pogled na postrojenje za čiščenje zgorelih plinov iz toplarne, kurjene s premogom;The invention will now be described in more detail with reference to the accompanying drawings, where FIG. 1 is a schematic view of a combustion gas purification plant from a coal fired power plant;
sl. 2 mešalo, opremljeno z napravo po izumu v pogledu s strani, pri čemer so določeni deli odrezani;FIG. 2 a mixer equipped with the device according to the invention in a side view, wherein certain parts are cut off;
sl. 3 mešalo s sl. 2 v pogledu od zgoraj; in sl. 4 prečni prerez vzdolž črte IV-IV s sl. 3.FIG. 3 shows the mixer of FIG. 2 in top view; and FIG. 4 is a cross-section along line IV-IV of FIG. 3.
Na sl. 1 je shematsko ilustrirano postrojenje za čiščenje zgorelih plinov iz toplarne 1, kurjene s premogom, pri čemer omenjeni zgoreli plini vsebujejo prah, kot npr. leteči pepel. Predgrelnik 2 je razporejen za prenos toplote od vročih zgorelih plinov na zgorevalni zrak, ki se ga z ventilatorjem 3 preko voda 2a dovaja v toplarno 1.In FIG. 1 is a schematically illustrated plant for the purification of combustion gases from a coal-fired heating plant 1, said combusted gases containing dust, such as e.g. fly ash. The preheater 2 is arranged to transfer heat from the hot combustion gases to the combustion air, which is supplied to the heating plant 1 via a fan 3 through the duct 2a.
Vroče zgorele pline se skozi vod 4 vodi v izločevalnik 5 prahu, ki je v prikazanem izvedbenem primeru tkaninski filter, ki na znani način vsebuje niz vrst filtrskih vreč in skozi katerega se vodi zgorele pline, ki se jih čisti. Tako očiščene zgorele pline se vodi skozi vod 6 k ventilatorju 7 zgorelih plinov, ki jih po vodu 8 nadalje vodi k dimniku 9, da se jih odvaja v atmosfero. Izločevalnik prahu je npr. lahko tudi elektrostatični usedalnik.The hot combustion gases are led through line 4 to a dust separator 5, which in the embodiment shown is a fabric filter, which in a known manner contains a series of types of filter bags and through which the combustion gases are cleaned. The combustion gases thus purified are led through conduit 6 to the fan 7 of the combustion gases, which through the conduit 8 further leads them to the chimney 9 to discharge them into the atmosphere. The dust separator is e.g. it can also be an electrostatic precipitator.
Vod 4 ima navpični odsek 10. Mešalnik 11 sodeluje s tem odsekom 10 v njegovem spodnjem delu. Mešalnik 11 vnaša na način, ki je detajlneje opisan v nadaljevanju, navlažene prašne delce v zgorevalne pline v spodnjem delu odseka 10 voda.The conduit 4 has a vertical section 10. The mixer 11 cooperates with this section 10 in its lower part. Mixer 11 injects, in the manner described in more detail below, moistened dust particles into the combustion gases in the lower portion of the water section 10.
Prašne delce, izločene v izločevalniku 5 prahu, se zbere v zbiralnih lijakih 12 izločevalnika 5 prahu. Del zbranih prašnih delcev se reciklira v sistem tako, da se jih vodi v mešalnik 11 (puščica Pl) . Preostanek zbranih prašnih delcev se odstrani na način, ki detajlneje ni opisan, npr. s pomočjo vijačnega transporterja.Dust particles recovered in the dust separator 5 are collected in the collecting funnels 12 of the dust separator 5. Part of the collected particulate matter is recycled to the system by being fed to mixer 11 (arrow Pl). The remainder of the particulate matter collected is removed in a manner not described in more detail, e.g. by means of a screw conveyor.
Mešalo 11 je mešalo takšne vrste, kot je opisano v W0 96/16727 in detajlneje prikazano na sl. 2-4.The agitator 11 is of the type described in WO 96/16727 and is shown in more detail in FIG. 2-4.
Mešalo 11, prikazano na sl. 2-4, obsega vsebnik 13, ki je v bistvu zasnovan kot podolgovata, paralelepipedna škatla. Vsebnik 13 ima dve navpični stranski steni 14 in 15, navpično zadnjo skončno steno 16, navpično prednjo skončno steno 17, vodoravno zgornje dno 18, vodoravno spodnje dno 19 in vodoraven vrh ali pokrov 20.The mixer 11 shown in FIG. 2-4, comprises a container 13 that is essentially designed as an elongated, parallelepiped box. The container 13 has two vertical side walls 14 and 15, a vertical rear end wall 16, a vertical front end wall 17, a horizontal top floor 18, a horizontal bottom floor 19 and a horizontal top or cover 20.
Na zadnjem koncu ima vsebnik 13 vstop 21, skozi katerega se prašne delce iz zbiralnih lijakov 12 od zgoraj vnaša v vsebnik 13 (puščica Pl na sl. 1 in 2) , in na prednjem koncu izstop 22, skozi katerega se odvaja homogeno zmes prašnih delcev in vode (puščice P2 na sl. 3 in 4).At the rear end, the container 13 has an inlet 21 through which dust particles from the collecting funnels 12 from above are fed into the container 13 (arrow Pl in FIGS. 1 and 2), and at the front end an outlet 22 through which a homogeneous mixture of dust particles is discharged. and water (arrows P2 in Figures 3 and 4).
Na skicah je prednji konec vsebnika 13 vstavljen v navpični odsek 10 voda, skozi katerega se zgorele pline vodi navzgor (puščice P3 na sl. 1, 2 in 4) . Pri tej izvedbi je izstop 22 preliv, zasnovan kot rezultat stranskih sten 14 in 15, ki je nižji v glavnem delu vsebniškega dela, vstavljenega v odsek 10 voda, kot v vsebniškem delu, razporejenem zunaj odseka 10 voda. Kot se vidi na sl. 2 in 3 poteka vrh 20 od vstopa 21 do izstopa 22, tj. vse do odseka 10 voda.In the drawings, the front end of the container 13 is inserted into a vertical section 10 of the conduit through which the combustion gases are directed upward (arrows P3 in Figures 1, 2 and 4). In this embodiment, the outlet 22 is an overflow designed as a result of the sidewalls 14 and 15, which is lower in the main part of the container portion inserted into the water section 10 than in the container part disposed outside the water section 10. As can be seen in FIG. 2 and 3, the top 20 runs from inlet 21 to outlet 22, i.e. all the way to section 10 of water.
Med njima dva dna 18 in 19 definirata komoro 23, ki je v bočni smeri razmejena z dvema stranskima stenama 14 in 15, v vzdolžni smeri pa z dvema skončnima stenama 16 in 17. Strop komore 23, tj. zgornje dno 18, sestoji iz za zrak prepustne fluidizacijske tkanine iz poliestra, ki je v raztegnjenem stanju razporejena v vsebniku 13. Za dovod zraka v komoro 23 (puščice P4 na sl. 2 in 3) je predvideno sredstvo za dovod zraka, ki sestoji iz dveh vstopov 24 in 25 za zrak, tako da fluidizira prašne delce v vsebniku 13.Between them, two bottoms 18 and 19 define a chamber 23 which is laterally demarcated by two side walls 14 and 15 and longitudinally by two end walls 16 and 17. The ceiling of the chamber 23, i. upper bottom 18, consisting of an air-permeable fluidizing fabric made of polyester disposed in a stretched state in a container 13. For air supply to the chamber 23 (arrows P4 in Figures 2 and 3) an air supply means is provided, consisting of two air intakes 24 and 25 by fluidizing the dust particles in container 13.
Vod 26 za oskrbo z vodo, ki je razporejen nad vsebnikom 13, je povezan z nizom šob 27, postavljenih v zgornjem delu vsebnika 13, da pršijo vodo v dokončno razdeljeni obliki po prašnih delcih v vsebniku. Šobe 27, od katerih je na skicah prikazan le del, so razporejene v dveh vzporednih vrstah, potekajočih vzdolž vsebnika 13.The water supply line 26 arranged above the container 13 is connected to a series of nozzles 27 positioned at the top of the container 13 to spray the water in a finely divided form over the dust particles in the container. Nozzles 27, of which only a portion is shown in the drawings, are arranged in two parallel rows running along the container 13.
Sosednji, vodoravni gredi 28, 28' potekata vzdolž celotnega vsebnika 13 in sta v dveh skončnih stenah 16 in 17 vrtljivo nameščeni v ležajih 29, 29' oz. 30, 30'. Za vrtenje gredi 28, 28' preko transmisijske enote 32 je predviden motor 31.The adjacent horizontal shafts 28, 28 'extend along the entire container 13 and are rotatably mounted in the two end walls 16 and 17 in the bearings 29, 29' or. 30, 30 '. An engine 31 is provided to rotate the shaft 28, 28 'via the transmission unit 32.
Vsaka gred 28, 28' nosi niz eliptičnih kolutov 33, 33', ki so glede na svoje manjše osi razporejeni v poševnem stanju na gredeh 28, 28' in na medsebojnem osnem odmiku. Gredi 28, 28' potekata skozi središča ustreznih kolutov 33, 33'. Pri prikazanem primeru je vsak kolut 33, 33' tako nagnjen glede na gred 28, 28', da kot a med glavno osjo koluta in gredjoEach shaft 28, 28 'carries a series of elliptical rings 33, 33' which are arranged relative to their smaller axes in an oblique state on the shafts 28, 28 'and at an axial offset. The shafts 28, 28 'pass through the centers of the corresponding rings 33, 33'. In the example shown, each reel 33, 33 'is inclined with respect to the shaft 28, 28' such that the angle a between the principal axis of the reel and the shaft
28, 28' znaša okoli 60° (glej sl. 2). Ta kot a lahko variira med 45° in 80°. Koluti 33, 33' so nagnjeni glede na ustrezni gredi 28, 28' in imajo takšno eliptično obliko, da so v osni projekciji okrogli, kot je prikazano na sl. 4. Koluti 33, 33' so na ustreznih gredeh 28, 28' postavljeni tako, da koluti prve gredi štrle v medprostore med koluti druge gredi.28, 28 'is about 60 ° (see Fig. 2). This angle a can vary between 45 ° and 80 °. The reels 33, 33 'are inclined with respect to the corresponding shafts 28, 28' and have such an elliptical shape that they are round in axial projection, as shown in FIG. 4. The reels 33, 33 'are arranged on the corresponding shafts 28, 28' such that the first shaft rolls project into the spaces between the second shaft rolls.
Vsak od kolutov 33, 33', razporejen in zasnovan na zgoraj opisan način, izvaja med vrtenjem gredi 28, 28' opletajoče gibanje, kar ima za posledico temeljito mešanje prašnih delcev.Each of the reels 33, 33 'arranged and designed as described above performs a twisting motion during rotation of the shaft 28, 28' which results in a thorough mixing of the dust particles.
Komora 23 je s pregrado 34 v prednjem delu vsebnika 13 ločena v komoro 23a prednjega dela, ki je razporejena v odseku 10 voda, in komoro 23b zadnjega dela. Kot je razvidno s sl. 2 je vstop 24 za zrak odprt v komoro 23b zadnjega dela, medtem ko je vstop 25 za zrak odprt v komoro 23a prednjega dela. S to razdelitvijo komore 23 je v dveh delnih komorah 23a in 23b mogoče doseči različne fluidizacijske pogoje, zlasti z namenom, da se dovod zraka tako prilagodi komori 23a prednjega dela, da se tamkaj vzpostavi primerno fluidizacijsko stanje za odvod materiala.The chamber 23 is separated by a barrier 34 in the front of the container 13 into a chamber 23a of the front portion arranged in section 10 of the conduit and a chamber 23b of the rear. As can be seen from FIG. 2, the air inlet 24 is open to the rear chamber 23b, while the air inlet 25 is open to the front chamber 23a. With this division of chamber 23, different fluidization conditions can be achieved in the two partial chambers 23a and 23b, in particular with the aim of adjusting the air supply to the chamber 23a of the front portion so as to establish a suitable fluidization state there for material discharge.
Tisti del prašnih delcev, ki so zbrani v zbiralnih lijakih 12 izločevalnika 5 prahu in so namenjeni recikliranju v sistem, se vnese v mešalnik 11 skozi vstop 21. Prašne delce se navlaži z vodo, ki se jo dovaja skozi šobe 27. Z zgradbo mehanskega mešalnega mehanizma in z fluidizacijo prašnih delcev, ki se jih dovede v mešalnik, ustvarja mešalnik 11 enovito navlaženo, homogeno zmes prašnih delcev, ki se jo skozi preliv 22 mešalnika 11 kontinuirano vnaša v odsek 10 voda.That part of the dust particles collected in the collecting funnels 12 of the dust separator 5 and intended to be recycled into the system is introduced into the mixer 11 through the inlet 21. The dust particles are moistened with water supplied through the nozzles 27. By the mechanical mixing structure mechanism, and by fluidization of the particulates introduced into the mixer, the mixer 11 creates a uniformly moistened, homogeneous mixture of dust particles, which is continuously introduced into the water section 10 through the overflow 22 of the mixer 11.
Da bi se enovito navlaženo, homogeno zmes prašnih delcev enakomerno porazdelilo v zgorelih plinih po celotnem prečnem prerezu odseka 10 voda, je bil zgoraj opisani mešalnik 11 dopolnjen z napravo po predloženem izumu.In order to uniformly distribute the homogeneous mixture of dust particles in the combustion gases throughout the cross section of section 10 of water, the mixer 11 described above was supplemented with the apparatus of the present invention.
Razdeljevalna naprava sestoji v prikazanem primeru iz četvero ploskih razdeljevalnih plošč 35, katerih vsaka ima obliko enakokrakega trikotnika. Razmerje osnovnice proti višini enakokrakega trikotnika znaša 0,2-0,4, prednostno 0,25-0,35.The distribution device consists, in the example shown, of four flat distribution boards 35, each of which is in the form of an isosceles triangle. The ratio of the base to the height of the isosceles triangle is 0.2-0.4, preferably 0.25-0.35.
Dve od plošč 35 sta tako, da mejita druga na drugo, v delu vsebnika, vstavljenem v odsek 10 voda, pritrjeni na prvo stransko steno 14 vsebnika 13. Preostali dve plošči 35 sta pritrjeni na drugo stransko steno 15 vsebnika 13, vsaka pred eno od plošč, pritrjenih na stranski steni 14. Osnovnica vsakokratne razdeljevalne plošče 35 je razporejena v istem nivoju kot preliv 22 in poteka vzporedno z ustreznima stranskima stenama 14, 15. Razdeljevalne plošče 35 so nagnjene in potekajo poševno navzdol v odsek 10 voda. Plošče 35 tvorijo z vodoravno ravnino kot β, ki v prikazanem primeru znaša okoli 45°. Kot β se lahko spreminja med 10° in 80°, prednostno pa znaša 35-50°.Two of the panels 35 are adjacent to each other in a portion of the container inserted into the section 10 of the line attached to the first side wall 14 of the container 13. The remaining two panels 35 are secured to the second side wall 15 of the container 13, each before one of plates attached to the side wall 14. The base of the respective distribution plate 35 is arranged in the same level as the overflow 22 and runs parallel to the corresponding side walls 14, 15. The distribution plates 35 are inclined and extend obliquely down into the section 10 of the water. The panels 35 are formed by a horizontal plane such as β, which in the example shown is about 45 °. The angle β can vary between 10 ° and 80 °, preferably 35-50 °.
Razmerje med vodoravno razdaljo a vsakokratne razdeljevalne plošče 35 od sosednje stene odseka 10 voda in njeno dolžino b v smeri štrlenja, projicirano v vodoravni ravnini (glej sl.The ratio between the horizontal distance a of each distribution plate 35 from the adjacent wall of section 10 of the water and its length b in the projection direction projected in the horizontal plane (see FIG.
4), znaša 0-0,5, prednostno 0,1-0,3.4) is 0-0.5, preferably 0.1-0.3.
Projekcija razdeljevalnih plošč 35 v vodoravni ravnini obsegaThe projection of the distribution panels 35 in the horizontal plane of the scale
5-50%, prednostno 20-30% (v prikazanem primeru okoli 30%) celotne površine prečnega prereza odseka 10 voda, zmanjšano za površino prečnega prereza, ki ga zaseda v odsek voda štrleč mešalni del.5-50%, preferably 20-30% (in the example shown, about 30%) of the total cross-sectional area of section 10 of the water, minus the cross-sectional area occupied by the projecting projection portion of the water.
Mešalnik 11 odvaja homogeno navlažene prašne delce skozi preliv 22 na razdeljevalne plošče 35. Ti prašni delci drse vsled gravitacije navzdol vzdolž plošč 35 in posledično dosežejo njihove dobro definirane stranske robove, kjer tok zgorelih plinov v odseku 10 voda zaradi zasnove in položaja plošč 35 doseže visok hitrostni gradient, ki povzroči, da se grude prašnih delcev, če sploh so, odtrgajo proč in prašni delci razpršijo v zgorelih plinih po celotnem prečnem prerezu odseka voda. Poleg tega ustvarijo plošče 35 zaradi svoje oblike vrtinčenje zgorelih plinov, kar povzroči globalno mešanje prašnih delcev v zgorelih plinih.The mixer 11 discharges homogeneously moistened dust particles through the overflow 22 onto the distributor plates 35. These dust particles gravitate downwards along the plates 35 and subsequently reach their well-defined lateral edges, where the combustion gas flow in the section 10 leads due to the design and position of the plates 35. a velocity gradient that causes clumps of dust particles, if any, to be torn away and dust particles scattered in the combustion gases along the entire cross section of the water section. In addition, they create panels 35 due to their shape of vortex combustion, which causes a global mixing of dust particles in the combustion gases.
Po želji se zgoraj opisano razdeljevalno napravo znotraj obsega zaščite lahko modificira na različne načine. Tako imajo razdeljevalne plošče 35 lahko drugačno trikotno obliko kot prikazani enakokraki trikotnik. Za plošče 35 niti ni potrebno, da so trikotne, temveč imajo lahko popolnoma drugačno obliko, če le obsegajo dva dobro definirana stranska robova, ki konvergirata poševno navzdol, gledano v smeri nagiba. Za razdeljevalne plošče 35 prav tako ni potrebno, da so ploske, temveč so v nekaterih primerih lahko konveksne ali konkavne. Število razdeljevalnih plošč 35 je seveda prilagojeno trenutni uporabi. V nekaterih primerih zadostuje uporaba zgolj ene plošče 35.Optionally, the distribution device described above can be modified in a variety of ways within the scope of protection. Thus, the distribution plates 35 may have a different triangular shape than the equilateral triangle shown. The panels 35 do not even need to be triangular, but may have a completely different shape if they only comprise two well-defined lateral edges that converge obliquely downward in tilting direction. Distribution boards 35 are also not required to be flat, but in some cases may be convex or concave. The number of distribution boards 35 is, of course, adapted to current use. In some cases it is sufficient to use only one plate 35.
Seveda je potrebno upoštevati tudi dejstvo, da se razdeljevalno napravo po izumu lahko uporabi pri drugih mešalnih napravah ali dovajalnih enotah in ne le pri detajlneje poprej opisanem mešalniku 11. Tisti del mešalnika 11, ki se razteza v odsek 10 voda, je lahko nadomeščen npr. z vodoravno ploščo, kateri se od kakršnegakoli mešalnika dovaja navlažene prašne delce.Of course, it should also be borne in mind that the dispenser according to the invention can be used with other mixing devices or feeder units, and not only with the mixer described above in detail 11. That part of the mixer 11 extending into the water section 10 may be replaced, for example. with a horizontal plate, which is supplied with moistened dust particles from any mixer.
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9601303A SE506249C2 (en) | 1996-04-04 | 1996-04-04 | Apparatus for dispensing and distributing an absorbent material in a flue gas duct |
| PCT/SE1997/000444 WO1997037747A1 (en) | 1996-04-04 | 1997-03-17 | Device for discharging and distributing an absorbent material in a flue gas duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SI9720030A true SI9720030A (en) | 1999-02-28 |
Family
ID=20402088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SI9720030A SI9720030A (en) | 1996-04-04 | 1997-03-17 | Device for discharging and distributing an absorbent material in a flue gas duct |
Country Status (16)
| Country | Link |
|---|---|
| EP (1) | EP0891219A1 (en) |
| JP (1) | JP2000508576A (en) |
| CN (1) | CN1215349A (en) |
| AU (1) | AU2415297A (en) |
| CA (1) | CA2251473A1 (en) |
| CZ (1) | CZ291809B6 (en) |
| EE (1) | EE9800316A (en) |
| HR (1) | HRP970182A2 (en) |
| ID (1) | ID16651A (en) |
| PL (1) | PL329157A1 (en) |
| SE (1) | SE506249C2 (en) |
| SI (1) | SI9720030A (en) |
| TR (1) | TR199700269A1 (en) |
| TW (1) | TW359741B (en) |
| WO (1) | WO1997037747A1 (en) |
| ZA (1) | ZA972809B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE514592C2 (en) * | 1998-05-18 | 2001-03-19 | Flaekt Ab | Method and apparatus for flue gas purification with extinguishing lime in immediate connection with flue gas purification |
| SE523667C2 (en) * | 2002-09-20 | 2004-05-11 | Alstom Switzerland Ltd | Method and apparatus for separating gaseous pollutants from hot gases by particulate absorbent material and mixer for wetting the absorbent material |
| EP1815903B1 (en) | 2006-02-06 | 2008-08-06 | ALSTOM Technology Ltd | Method and device for controlling the absorption of gaseous pollutants from hot process gases |
| US7766997B2 (en) | 2007-12-21 | 2010-08-03 | Alstom Technology Ltd | Method of reducing an amount of mercury in a flue gas |
| US9266060B2 (en) | 2012-05-07 | 2016-02-23 | Alstom Technology Ltd | Dry scrubber system |
| PL2638952T3 (en) | 2012-03-12 | 2022-11-14 | Andritz Aktiebolag | A method of controlling a gas cleaning system by measuring a parameter of an absorbent material |
| US9108152B2 (en) | 2013-11-26 | 2015-08-18 | Alstom Technology Ltd | Dry scrubber system with low load distributor device |
| US8906333B1 (en) | 2013-11-27 | 2014-12-09 | Alstom Technology Ltd | Dry scrubber system with air preheater protection |
| US9084964B1 (en) | 2014-05-08 | 2015-07-21 | Alstom Technology | Radial fabric filter for particulate collection |
| EP3002051B1 (en) * | 2014-10-03 | 2019-12-25 | General Electric Technology GmbH | Dust separator useful with dry scrubber system |
| US10232310B2 (en) | 2016-10-05 | 2019-03-19 | General Electric Technology Gmbh | Multi-function duct for dry scrubber system |
| US10161630B2 (en) | 2016-12-01 | 2018-12-25 | General Electric Technology Gmbh | Systems and methods for testing flue gas cleaning systems |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3510669A1 (en) * | 1985-03-23 | 1986-09-25 | Walter 2848 Vechta Kärcher | Apparatus for eliminating pollutants from flue gas streams and process for operating the apparatus |
| SE454142B (en) * | 1985-04-23 | 1988-04-11 | Flaekt Ab | CONTACT REACTOR |
| FI78401B (en) * | 1985-04-24 | 1989-04-28 | Tampella Oy Ab | FOERFARANDE OCH ANORDNING FOER ATT BRINGA ROEKGASERNAS GASFORMIGA SVAVELFOERENINGAR SAOSOM SVAVELDIOXID ATT REAGERA TILL FASTA FOERENINGAR SOM SEPARERAS FRAON ROEKGASERNA. |
| DE3806862A1 (en) * | 1988-01-23 | 1989-09-14 | Walther & Cie Ag | Process for the adsorption or chemisorption of gaseous constituents from a gas stream |
| ZA949100B (en) * | 1993-11-16 | 1995-07-21 | Comalco Alu | Countercurrent gas-solid contacting |
-
1996
- 1996-04-04 SE SE9601303A patent/SE506249C2/en not_active IP Right Cessation
-
1997
- 1997-03-17 AU AU24152/97A patent/AU2415297A/en not_active Abandoned
- 1997-03-17 WO PCT/SE1997/000444 patent/WO1997037747A1/en active IP Right Grant
- 1997-03-17 CA CA002251473A patent/CA2251473A1/en not_active Abandoned
- 1997-03-17 EE EE9800316A patent/EE9800316A/en unknown
- 1997-03-17 JP JP9536113A patent/JP2000508576A/en active Pending
- 1997-03-17 SI SI9720030A patent/SI9720030A/en unknown
- 1997-03-17 CZ CZ19983192A patent/CZ291809B6/en not_active IP Right Cessation
- 1997-03-17 EP EP97919804A patent/EP0891219A1/en not_active Withdrawn
- 1997-03-17 CN CN97193574A patent/CN1215349A/en active Pending
- 1997-03-17 PL PL97329157A patent/PL329157A1/en unknown
- 1997-03-28 TW TW086104049A patent/TW359741B/en active
- 1997-04-02 ZA ZA9702809A patent/ZA972809B/en unknown
- 1997-04-02 HR HR9601303-2A patent/HRP970182A2/en not_active Application Discontinuation
- 1997-04-03 TR TR97/00269A patent/TR199700269A1/en unknown
- 1997-04-03 ID IDP971129A patent/ID16651A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EE9800316A (en) | 1999-04-15 |
| ID16651A (en) | 1997-10-30 |
| CZ291809B6 (en) | 2003-06-18 |
| ZA972809B (en) | 1997-10-31 |
| SE9601303D0 (en) | 1996-04-04 |
| EP0891219A1 (en) | 1999-01-20 |
| CZ319298A3 (en) | 1999-03-17 |
| SE9601303L (en) | 1997-10-05 |
| CA2251473A1 (en) | 1997-10-16 |
| TR199700269A1 (en) | 1997-10-21 |
| AU2415297A (en) | 1997-10-29 |
| CN1215349A (en) | 1999-04-28 |
| WO1997037747A1 (en) | 1997-10-16 |
| HRP970182A2 (en) | 1999-12-31 |
| PL329157A1 (en) | 1999-03-15 |
| TW359741B (en) | 1999-06-01 |
| JP2000508576A (en) | 2000-07-11 |
| SE506249C2 (en) | 1997-11-24 |
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