DK163866B

DK163866B - APPARATUS FOR CLEANING AN AIR TYPE, LIKE AIR CONTAINED BY DISPERSED OIL OR CARBON HYDROID COMPOUNDS

Info

Publication number: DK163866B
Application number: DK316584A
Authority: DK
Inventors: Bernard Obriot
Original assignee: Flaekt Aktiebolag Aab
Priority date: 1983-06-29
Filing date: 1984-06-28
Publication date: 1992-04-13
Also published as: FI842563A0; NO842624L; NO163316C; ATE37667T1; DK316584D0; FR2548041A1; FI80613B; FI80613C; EP0132174B1; FR2548041B1; FI842563A; DK163866C; EP0132174A1; DE3474415D1; DK316584A; NO163316B

Abstract

1. Apparatus for puifying a gas, such as air, contamined by oily or hydrocarbonic liquid compounds dispersed in the said, gas, in particular in the form of mist, of the type comprising a caisson (1) comprising at least one sustantially horizontal inlet pipe (2) for the contamined gas laterally opening into a purification chamber (4) and at least one outlet pipe (6) for the purified gas, the said purification chamber (4) containing, in the flow path of the gas from the inlet pipe (2) towards the outlet pipe (6), a wall (18) for the downward deflection of the gases brought into the said purification chamber (4) and a device for separating the contaminating products by filtration disposed substantially horizontally in the said flow path of the gas, and a part (10) for collecting the oily or hydrocarbonic compounds (12) separated from the said gas and falling into this part by gravity, the said part being provided in the bottom of the said purification chamber and leaving a flow path of the deflected gases towards the separation device below the said wall (18), characterized in that the deflection wall (18) is entirely vertical and provided with a baffle device (22) disposed upstream of the deflection side of the wall and over its whole height, and in that the separation device comprises a first filter (8) for separating by coalescence vesicles of oily or hydrocarbonic products into droplets (14), such as formed of a plurality of metallic cloth layers, and, downstream of this first filter, an additional filter (36) made of a material for fixing the hydrocarbons such as polypropylene.

Description

DK 163866BDK 163866B

iin

Opfindelsen angår et apparat til rensning af en luftart, såsom luft, der er forurenet med væskeformige olie- eller carbonhydridforbindelser, der er dispergeret i den nævnte 5 luftart.The invention relates to an apparatus for purifying a gaseous species, such as air contaminated with liquid oily or hydrocarbon compounds dispersed in said gaseous state.

Det er kendt, at luften i fabrikslokaler ofte er forurenet med forskellige væskeformige olie- eller carbonhydridforbindelser, der stammer fra olie, som anvendes ved bearbejdning, smøring af forme, afkøling mv.It is known that the air in factory premises is often contaminated with various liquid oily or hydrocarbon compounds derived from oil used in machining, lubricating molds, cooling, etc.

10 Spredningen af olie- eller carbonhydridforbindelser i luften, især i fabrikslokalerne bevirker, at olien fordamper, når den kommer i berøring med varme maskindele eller lignende og således danner en tåge, som spreder sig overalt i fabrikslokalerne, hvor den dels udgør en fare 15 for arbejdernes helbred, dels udgør en risiko for fabrikationskvaliteten, dels udgør en sikkerhedsrisiko på grund af brandfare og endelig indebærer en fare for forurening af omgivelsernes miljø.10 The spread of oil or hydrocarbon compounds in the air, especially in the factory premises, causes the oil to evaporate when it comes into contact with hot machine parts or the like, thus forming a fog which spreads everywhere in the factory premises, where it partly poses a danger 15 workers' health, partly poses a risk to fabrication quality, and partly poses a safety risk due to fire hazards and finally poses a danger of pollution of the surrounding environment.

Det er derfor nødvendigt at fjerne disse tåger fra den 20 afgående luftart.It is therefore necessary to remove these fogs from the 20 outgoing gases.

Det er tidligere blevet foreslået et apparat til rensning af luft, der er forurenet med flydende olie- eller carbonhydridforbindelser, der er dispergeret i luften. Disse kendte apparater omfatter et hus med en tilførselskanal 25 for luft, der indeholder olie- eller carbonhydridforbindelser, hvilken kanal udmunder i et rensningskammer og en luftafgangskanal, idet rensningskammeret omfater en udskiller for olie- eller carbonhydridforbindelserne anbragt vinkelret eller på skrå i forhold til luftens 30 strømningsbane fra tilførselskanalen til afgangskanalen samt en samlebeholder for olie- eller carbonhydridforbindelserne anbragt under udskilleren på en sådan måde, at den opsamler de forbindelser, der er tilbageholdt af udskilleren og synker ned på grund af tyngden.It has previously been proposed an apparatus for purifying air contaminated with liquid oil or hydrocarbon compounds dispersed in the air. These known apparatus comprise a housing with an air supply duct 25 containing oil or hydrocarbon compounds, which opens into a purification chamber and an air outlet duct, the purification chamber comprising a separator for the oil or hydrocarbon compounds disposed perpendicularly or obliquely to the air 30 flow path from the feed duct to the outlet duct, as well as a collecting tank for the oil or hydrocarbon compounds placed under the separator in such a way that it collects the compounds retained by the separator and sinks down due to gravity.

22

DK 163866 BDK 163866 B

Sådanne kendte apparater, der omfatter en lodret eller skråtstillet udskiller, er imidlertid behæftet med den væsentlige ulempe, at der efter nogle timers drift opstår 5 en mætning af udskilleren, som i almindelighed udgøres af et antal lag af metallisk væv i apparatets nederste del, hvilket bevirker en forøgelse af lufthastigheden i den øverste del, således at luften river de dråber med sig, der er dannet ved agglomering i berøring med vævslagene i 10 udskilleren.However, such known apparatus comprising a vertical or inclined separator suffers from the major disadvantage that after a few hours of operation, a saturation of the separator is formed, which is generally constituted by a plurality of layers of metallic tissue in the lower part of the apparatus, which causes an increase in the air velocity in the upper part so that the air tears the droplets formed by agglomeration in contact with the tissue layers of the separator.

Som følge heraf er udskillelsen meget dårlig, og den luft, der strømmer ud gennem afgangskanalen, indholder vedblivende en ikke ubetydelig procentdel af væskeformige olieeller carbonhydridforbindelser, der er dispergeret i 15 luften, hvilket er uacceptabelt.As a result, the discharge is very poor, and the air flowing through the exhaust duct contains a not insignificant percentage of liquid oil or hydrocarbon compounds dispersed in the air, which is unacceptable.

Der kendes også andre rensningsapparater, og der skal især henvises til US-patentskrift nr. 3.856.487, der omhandler et apparat til rening af luftarter, især luftarter, der indeholder uønskede bestanddele, såsom 20 kemikalier og partikler, eller sure røggasser, såsom afgangsgasserne fra kemiske processer. Dette apparat er udformet som et gasrensningsapparat, der på forskellige steder i apparatets gasstrøm har doucheindretninger, der fugter luftarten med en forstøvet væske, og som arbejder 25 efter modstrømsprincippet, og apparatet omfatter endvidere indsnævringer, der sørger for at forøge gennemstrømningshastigheden og gøre gasstrømmen mere turbulent. De tunge partikler føres med væsken ned i en sump, der er delt i to afdelinger med et gitter, der spærrer for 30 partiklerne. Den rensede luftart passerer til sidst gennem filterkurve. Apparatets doucheindretninger er især placeret i områder, hvor gasgennemstrømningen er moderat.Other purifiers are also known, and reference is particularly made to U.S. Patent No. 3,856,487, which discloses an apparatus for purifying gases, in particular gases containing undesirable constituents, such as chemicals and particles, or acidic flue gases such as the exhaust gases. from chemical processes. This apparatus is designed as a gas purifying apparatus which, at various points in the gas stream of the apparatus, has shower devices which moisten the gaseous state with an atomized liquid and which operates according to the countercurrent principle, and the apparatus further includes constrictions which increase the flow rate and make the gas flow more turbulent. . The heavy particles are fed with the liquid into a sump that is divided into two compartments with a grid that blocks the 30 particles. The purified gas eventually passes through the filter curve. The appliance's shower devices are especially located in areas where the gas flow is moderate.

Den nederste del af det kasseformede apparat er udformet som et kar, der indeholder en væske, og der er anbragt en 35 pumpe, der suger væske ud af karret til tilførsel til 3The lower part of the box-shaped apparatus is designed as a vessel containing a liquid, and a pump is provided which sucks fluid out of the vessel for delivery to the vessel.

DK 163866 BDK 163866 B

doucheindretningens dyser, hvor væsken forstøves. Permanent væsketilførsel sikres via en svømmerstyret ventil, og tømning af karret sker fra et overløb.shower nozzles where the liquid is atomized. Permanent fluid supply is ensured via a float-controlled valve, and the vessel is emptied from an overflow.

5 Dette apparat er imidlertid temmelig kompliceret og kræver en ikke ubetydelig energitilførsel. For at kunne presse gassen gennem et sådant apparat kræves et ganske stort tryk, som må tilvejebringes med kraftige blæsere. Desuden kræves energitilførsel til driften af den pumpe, der 10 sørger for forstøvning af væsken under temmeligt højt tryk, og endvidere bruges en betydelig vandmængde under apparatets drift. Endelig kræves omfattende vedligeholdelse af et sådant apparat og dets kar, svømmerventil, dyser, pumpe, blæsere og filtre, og installationen er også 15 kostbar og ret kompliceret, da der stilles særlige krav, især knyttet til vandtilførslen og -afgangen. Egentlig er dette kendte apparat i sine forskellige udførelsesformer et luftvaskeapparat til særlig behandling af luftarter, der indeholder kemiske biprodukter.5 However, this apparatus is rather complicated and requires a not insignificant energy supply. To be able to squeeze the gas through such an apparatus requires quite a large pressure, which must be provided with heavy blowers. In addition, energy supply is required for the operation of the pump which provides for the spraying of the liquid under fairly high pressure, and furthermore, a considerable amount of water is used during the operation of the apparatus. Finally, extensive maintenance of such an apparatus and its vessels, float valve, nozzles, pump, fans and filters is required, and the installation is also costly and quite complicated, as special requirements are made, especially related to the water supply and discharge. In fact, in its various embodiments, this known apparatus is an air washing apparatus for special treatment of gases containing chemical by-products.

20 Der består således et behov for at tilvejebringe et apparat, der er relativt beskedent i omfang og omkostninger og har en langt enklere indre opbygning end de kendte apparater, for både at kunne reducere vedligeholdelsen og tillægsomkostninger ved installationen til et minumum, men 25 hvor samtidigt det tekniske problem, der består i effektiv rensning af luftarter, der er forurenet med olieholdige blandinger eller flydende carbonhydrider dispergeret i gassen, kan løses på tilfredsstillende måde.Thus, there is a need to provide a device that is relatively modest in scope and cost and has a much simpler internal structure than the known appliances, in order to reduce both maintenance and additional costs of installation to a minimum, but 25 where simultaneously the technical problem of effective purification of gases contaminated with oily mixtures or liquid hydrocarbons dispersed in the gas can be solved satisfactorily.

Dette problem løses ved apparatet ifølge opfindelsen, som 30 er af den i krav l's indledning angivne art, og apparatet ifølge opfindelsen er ejendommeligt ved de i dette kravs kendetegnende del anførte karakteristika.This problem is solved by the apparatus of the invention, which is of the kind set forth in the preamble of claim 1, and the apparatus of the invention is peculiar to the characteristics set forth in the characterizing part of this claim.

Lamelvæggen bevirker en første agglomerering af de små dråber af olie- og carbonhydridprodukter, som er dis- 4The slat wall causes an initial agglomeration of the small droplets of oil and hydrocarbon products which are dis 4

DK 163866 BDK 163866 B

pergeret i luftarten, til dannelse af dråber, der falder ned under tyngdens påvirkning/ og forhindrer en gendisper-gering af dråberne i luftarten. Det yderligere filter af 5 et materiale, der absorberer carbonhydrider, opsamler de fineste partikler.entangled in the gaseous species, to form droplets which fall under the influence of gravity / and prevent a redistribution of the gaseous droplets. The additional filter of a hydrocarbon-absorbing material collects the finest particles.

En foretrukken udførelsesform for apparatet ifølge opfindelsen er ejendommelig ved, at der nedstrøms fra udskilleren er anbragt en skylleindretning for udskil-10 leren, fortrinsvis indrettet til forstøvning af et passende middel, såsom et overfladeaktivt middel eller opløsningsmiddel.A preferred embodiment of the apparatus according to the invention is characterized in that a flushing device for the separator is arranged downstream of the separator, preferably arranged for atomising a suitable agent, such as a surfactant or solvent.

En udførelsesform for apparatet ifølge opfindelsen, som er særlig velegnet til anvendelse med en forholdsvis varm 15 luftart, f.eks. luften fra et rum eller lokale, er ifølge opfindelsen ejendommelig ved, at der i rensningskammerets afgangsåbning er anbragt en varmeveksler, der genvinder varmen i den luftart, der forlader rensningskammeret, ved opvarmning af en kølevæske, som derpå hensigtsmæssigt 20 anvendes til opvarmning af den luftart, der indføres i rummet eller lokalet. Apparatet kan i det tilfælde, hvor luftarten ikke er luft, udgøres af en reaktor.An embodiment of the apparatus according to the invention which is particularly suitable for use with a relatively hot gas, e.g. According to the invention, the air from a room or room is characterized in that in the outlet opening of the cleaning chamber a heat exchanger is recovered which retrieves the heat in the gas leaving the cleaning chamber by heating a coolant which is suitably used for heating the gas type. that is introduced into the room or room. In the case where the gas is not air, the apparatus can be constituted by a reactor.

En udførelsesform for apparatet, der er særlig velegnet i tilfælde af brandfare, er ifølge opfindelsen ejendommelig 25 ved et spærrings anlæg til tæt afspærring af rensningskammeret fra rummet eller lokalet, hvilket anlæg i en foretrukken udførelsesform kan omfatte bevægelige spjæld, der er anbragt i gastilførselskanalerne henholdsvis gasafgangskanalerne og kan lukke disse, samt gastilførselsor-30 ganer til indføring af en inaktiv luftart i rensningskammeret med henblik på undgåelse af enhver brandfare.An embodiment of the apparatus, which is particularly suitable in the event of a fire hazard, according to the invention is characterized by a locking system for tightly closing the cleaning chamber from the room or room, which in a preferred embodiment may comprise movable dampers arranged in the gas supply ducts respectively. the gas exhaust ducts and can close them, as well as gas supply means for introducing an inert gas into the purification chamber to avoid any fire hazard.

Opfindelsen skal i det følgende forklares nærmere under henvisning til de på tegningen viste udførelseseksempler på apparatet ifølge opfindelsen og anvendelsen heraf, idet 5The invention will be explained in more detail below with reference to the exemplary embodiments of the apparatus according to the invention and the use thereof, in which:

DK 163866 BDK 163866 B

fig. 1 skematisk og i længdesnit viser et første udførelseseksempel på et apparat til rensning af en luftart, fig. 2 er et til fig. 1 svarende billede, men viser yder-5 ligere et afspærringsanlæg til tæt afspærring af rensningskammeret fra det pågældende lokale eller rum eller den pågældende reaktor i tilfælde af brandfare, fig. 3 skematisk viser et lokale, der som eksempel udgøres af et fabrikslokale med et antal renseapparater ifølge 10 opfindelsen, der er forbundet med et lukket kredsløb, hvori en kølevæske cirkulerer, og fig. 4 viser et skematisk snit gennem apparatet ifølge opfindelsen sammen med en indretning til genindføring af luftarten, fortrinsvis luft, i et lokale på en sådan måde, 15 at der opnås en hensigtsmæssig udjævning af temperaturen i lokalet.FIG. 1 is a schematic and longitudinal section showing a first embodiment of an apparatus for purifying a gas; FIG. 2 is a view of FIG. 1 is a similar view, but further illustrates a shut-off system for tightly blocking the purification chamber from the particular room or room or reactor in the event of a fire hazard; 3 is a schematic view of a room, for example, of a factory room with a number of cleaning apparatus according to the invention connected to a closed circuit in which a coolant circulates, and FIG. 4 shows a schematic section through the apparatus according to the invention together with a device for reintroducing the gaseous species, preferably air, in a room in such a way that an appropriate leveling of the temperature in the room is achieved.

Fig. 1 viser et apparat til rensning af luftart, såsom luft, der er forurenet af deri dispergerede, væskeformige olie- eller carbonhydridforbindelser, omfattende et hus 1 20 med mindst en gastilførselskanal 2 for luftart, der indeholder olie- eller carbonhydridforbindelser, hvilken kanal udmunder i et rensningskammer 4, og mindst én gasafgangskanal 6 for renset luftart. Rensningskammeret 4 omfatter en udskiller 8 til udskillelse af iblandede olie- eller 25 carbonhydridforbindelser i form af væskebestanddele 11, hvilken udskiller er anbragt i den med pilene symboliserede luftartstrøm fra gastilførselskanalen 2 til gasafgangskanalen 6, samt en samlebeholder 10 til at opsamle væskebestanddelen 12, der tilbageholdes af udskilleres 8, 30 og tømme dem ud under tyngdekraftens på påvirkning som symboliseret ved dråberne 14 i fig. 1 og 2.FIG. 1 shows an apparatus for purifying gases, such as air contaminated by liquid-dispersed oily or hydrocarbon compounds therein, comprising a housing 1 20 with at least one gas supply channel 2 for gases containing oil or hydrocarbon compounds, which opens into a purification chamber 4, and at least one purified gas exhaust duct 6. The purification chamber 4 comprises a separator 8 for separating mixed oil or hydrocarbon compounds in the form of liquid constituents 11, which separator is arranged in the gas-symbolized air flow from the gas supply duct 2 to the gas outlet duct 6, and a collecting container 10 for collecting the liquid constituent 12 which is retained. of separators 8, 30 and discharge them under the influence of gravity as symbolized by the drops 14 in FIG. 1 and 2.

Ifølge opfindelsen omfatter rensningskammeret 4 en dyna- 6According to the invention, the cleaning chamber 4 comprises a cushion 6

DK 163866 BDK 163866 B

misk forkoncentrator for de dispergerede forbindelser, der er anbragt opstrøms for udskilleren 8. Ifølge en specielt hensigtsmæssig udførelsesform omfatter forkoncentratoren 5 16 en væg 18, der er således anbragt, at den står i vejen for den i rensningskammeret 4 indførte luftartstrøm og derved afbøjer denne, inden den passerer gennem udskilleren 8, således som det tydeligt kan ses i fig. 1.a preconcentrator for the dispersed compounds located upstream of the separator 8. According to a particularly convenient embodiment, the preconcentrator 5 16 comprises a wall 18 arranged so as to stand in the way of the gaseous flow introduced into the purification chamber 4, thereby deflecting it. before passing through the separator 8, as can be clearly seen in FIG. First

Væggen 18, der står i vejen for den indstrømmende luftart, 10 er fortrinsvis anbragt i det væsentlige lodret og danner en skillevæg, der deler rensningskammeret 4 i to delkamre 4a og 4b, idet skillevæggen 18 er kortere end højden af rensningskammeret 4, således at der forneden dannes et frit rum 20 til gennemstrømning af luftart, således som 15 det tydeligt kan ses i fig. 1.The wall 18 which stands in the way of the inflowing gas 10 is preferably arranged substantially vertically and forms a partition dividing the cleaning chamber 4 into two sub-chambers 4a and 4b, the partition wall 18 being shorter than the height of the cleaning chamber 4, so that below, a free space 20 for gaseous flow is formed, as can be clearly seen in FIG. First

Ifølge et kendetegn, der er specielt foretrukket, tjener skillevæggen 18 som vist i fig. 1 til fastgørelse af den ene ende 8a på udskilleren 8.According to a particularly preferred feature, the partition 18 serves as shown in FIG. 1 for attaching one end 8a to the separator 8.

Et andet træk ved apparatet ifølge opfindelsen består i, 20 at væggen 18 er forsynet med lameller 22 eller lignende over hele eller størsteparten af sin overflade, hvilke lameller er anbragt i afstand fra væggen 18. Lamellerne 22 tjener således til at bevirke en første agglomerering af de små dråber eller blærer af olie- eller carbonhydrid-25 produkter, som er dispergeret i luftarten, fortrinsvis luft, til dannelse af små dråber 24, som ligeledes falder ned under tyngdens påvirkning. De nævnte lameller 22 tjener bl.a. til at forhindre en gendispergering af smådråberne 24 i luftarten.Another feature of the apparatus according to the invention consists in that the wall 18 is provided with slats 22 or the like over all or most of its surface, which slats are spaced apart from the wall 18. The slats 22 thus serve to effect a first agglomeration of the small droplets or blisters of oil or hydrocarbon products dispersed in the gaseous state, preferably air, to form small droplets 24 which also fall under the influence of gravity. Said slats 22 serve, inter alia, for preventing a redistribution of the droplets 24 in the gaseous species.

30 Beholderen til opsamling af olie- eller carbonhydrid-forbindelserne kan være udformet på forskellige måder. I det i fig. 1 viste udførelseseksempel udgøres samlebe-holderen 10 af den nederste del af rensningskammeret 4, fortrinsvis i form af en tragt 26, hvis bund 28 har en 7The container for collecting the oil or hydrocarbon compounds may be designed in various ways. In the embodiment of FIG. 1, the collecting container 10 is constituted by the lower part of the cleaning chamber 4, preferably in the form of a hopper 26, the bottom 28 of which has a 7

DK 163866 BDK 163866 B

åbning 30, der er lukket af en ventil 32, som efter ønske kan åbnes til udtømning af olie- eller carbonhydridfor-bindelserne 12, der er opsamlet i samlebeholderen 10.opening 30 closed by a valve 32 which can be opened, if desired, to discharge the oil or hydrocarbon compounds 12 collected in collector 10.

5 Fortrinsvis er der nederst i rensningskammeret 4 anbragt et gitter 34 for at tilvejebringe en fysisk adskillelse mellem selve rensningskammeret 4 og samlebeholderen 10.5 Preferably, a grid 34 is provided at the bottom of the purification chamber 4 to provide a physical separation between the purification chamber 4 and the collecting container 10.

I overensstemmelse med endnu et træk ved apparatet ifølge opfindelsen udgøres udskilleren 8 af et filter til udskil-10 lelse af partiklerne af olie- eller carbonhydridprodukter til små dråber, og den udgøres fortrinsvis af et antal lag af væv, især af metal, hensigtsmæssigt med stor tykkelse.In accordance with yet another feature of the apparatus of the invention, the separator 8 is a filter for separating the particles of oil or hydrocarbon products into small droplets, and is preferably comprised of a plurality of layers, especially of metal, suitably with large droplets. thickness.

I tilfælde af, at udskilleren 8 ikke er i stand til fuldstændigt at rense luftarten for olie- eller carbonhydrid-15 produkter, omfatter apparatet ifølge opfindelsen fortrinsvis bl.a. nedstrøms fra udskilleren 8 mindst eb hjælpefilter 36, der består af et materiale med stor affinitet til carbonhydrider, fortrinsvis polypropylen, der ligeledes er anbragt vandret, og som fanger de sidste partikler af 20 olie- eller carbonhydridforbindelser, der er dispergeret i luftarten.In case the separator 8 is not able to completely purify the gases of petroleum or hydrocarbon products, the apparatus according to the invention preferably comprises, inter alia, a. downstream of the separator 8, at least eb auxiliary filter 36, which consists of a material with a high affinity for hydrocarbons, preferably polypropylene, also disposed horizontally, which captures the last particles of 20 oil or hydrocarbon compounds dispersed in the gas species.

For at understøtte udfældningen af de små dråber af flydende olie- eller carbonhydridforbindelser, der er dispergeret i luftarten, omfatter apparatet ifølge 25 opfindelsen fortrinsvis desuden nedstrøms fra udskilleren 8 en skylleindretning 38 for udskilleren 8, fortrinsvis med forstøvning, f.eks. ved hjælp af en indretning til udsprøjtning, som vist, af et passende middel 40, såsom et overfladeaktivt middel eller et opløsningsmiddel, alt 30 efter behov.In order to support the precipitation of the small droplets of liquid oil or hydrocarbon compounds dispersed in the gas species, the apparatus according to the invention preferably further downstream from the separator 8 comprises a flushing device 38 for the separator 8, preferably with atomization, e.g. by means of a device for spraying, as shown, of a suitable agent 40, such as a surfactant or solvent, as required 30.

Når det drejer sig om rensning af en forholdsvis varm luftart, f.eks. luft fra et rum eller et lokale med højere temperatur end omgivelserne, er apparatet ifølge opfindelsen desuden fortrinsvis i afgangsområdet fra rensnings- 8In the case of purification of a relatively hot gas, e.g. moreover, from a room or room at a higher temperature than the ambient, the apparatus of the invention is preferably in the outlet area of the purifier.

DK 163866 BDK 163866 B

kammeret 4 udstyret med en varmeveksler 42 til genvinding af varmen i den luftart, der forlader rensningskammeret 4, ved opvarmning af et kølefluidum, som derpå 5 hensigtsmæssigt anvendes til opvarmning af den luft, der indføres i det nævnte rum eller lokale, ved hjælp af en yderligere varmeveksler 44, der er vist i fig. 3.the chamber 4 is provided with a heat exchanger 42 for recovering the heat in the gas leaving the purification chamber 4 by heating a cooling fluid which is then suitably used to heat the air introduced into said room or room by means of a further heat exchanger 44 shown in FIG. Third

Af fig. 3 vil det også kunne ses, at værelset eller lokalet 46 kan indeholde flere renseapparater 1 ifølge 10 opfindelsen, som hvert i sin gasafgangskanal 6 er udstyret med en varmeveksler 42, der indgår i et lukket kredsløb 48 med en varmeveksler 44 til forvarmning af den luft 50, der føres ind i lokalet 46, og som har en lavere temperatur.In FIG. 3, it will also be seen that the room or room 46 may contain several purifiers 1 according to the invention, each of which is provided in its gas outlet duct 6 with a heat exchanger 42 which is included in a closed circuit 48 with a heat exchanger 44 for preheating the air. 50, which is introduced into the room 46 and which has a lower temperature.

Det samme princip kan på samme måde anvendes i det 15 modsatte tilfælde.The same principle can be applied in the same way in the opposite case.

Af fig. 3 vil det kunne ses, at dersom friskluften 50 indføres nederst i lokalet 46, vil der opstå en vis lagdannelse af temperaturen i lokalet 46. Denne ulempe kan undgås ved hjælp af den i fig. 4 viste opstilling, hvor 20 friskluften 50 indføres i en højere liggende del af lokalet 46, der er forsynet med luftledeapparater 52, der forhandles under handelsbetegnelsen "DIRIVENT"®, og som gør det muligt at indføre luften i luftstrømme 54, der er således rettet, at de bevirker en udjævning af temperatu-25 ren i lokalet 46.In FIG. 3, it can be seen that if the fresh air 50 is introduced at the bottom of the room 46, some layer formation of the temperature in the room 46 will occur. This disadvantage can be avoided by means of the one in FIG. 4, where the fresh air 50 is introduced into a higher-lying part of the room 46, which is provided with air conduit 52, which is negotiated under the trade designation "DIRIVENT" ® and which allows the air to be introduced into air streams 54 thus directed. that they cause a leveling of the temperature in room 46.

Fig. 2 viser en udførelsesform for apparatet ifølge opfindelsen, der er bestemt til anvendelse i de sædvanlige tilfælde, hvor olie- eller carbonhydridforbindelserne medfører brandfare. I denne udførelsesform omfatter apparatet 30 ifølge opfindelsen et afspærringsanlæg 60 til tæt isolering af rensningskammeret 4 fra lokalet 46. Afspærringsanlægget 60 omfatter fortrinsvis bevægelige spjæld 62 og 64, der er anbragt i gastilførselskanalen 2 henholdsvis gasafgangskanalen 6 og kan lukke disse, og som vist i fig.FIG. 2 shows an embodiment of the apparatus according to the invention intended for use in the usual cases where the oil or hydrocarbon compounds cause a fire hazard. In this embodiment, the apparatus 30 according to the invention comprises a shut-off system 60 for tightly isolating the cleaning chamber 4 from the room 46. The shut-off system 60 preferably comprises movable dampers 62 and 64 arranged in the gas supply duct 2 and gas outlet duct 6, respectively, and can close these, and as shown in FIG. .

35 2 kan betjenes af skematisk viste aktiveringsorganer 66, 92 can be operated by schematically shown actuating means 66, 9

DK 163866 BDK 163866 B

der kan være af kendt art og indrettet til at aktiveres ad hydraulisk, pneumatisk, elektrisk eller elektromagnetisk vej. Aktiveringsorganerne 66 er fortrinsvis kombineret med 5 et gastilførselsorgan 68 for inaktiv gas, hvormed inaktiv gas kan indføres i rensningskammeret 4 med henblik på at undgå enhver brandfare. Som inaktiv gas kan som eksempel nævnes carbondioxid, halogener etc. Fagfolk på dette område vil i hvert enkelt tilfælde kunne vælge en passende 10 inaktiv gas.which may be of known type and adapted to be actuated by hydraulic, pneumatic, electric or electromagnetic path. The actuating means 66 is preferably combined with 5 a gas supply means 68 for inert gas, by which inert gas can be introduced into the purification chamber 4 in order to avoid any fire hazard. As an inert gas, for example, carbon dioxide, halogens etc. may be mentioned.

Renseapparatet ifølge opfindelsen kan kombineres eller sammenstilles med et hvilket som andet udstyr inden for denne teknik. F.eks. kan der i det i fig. 3 viste lukkede kredsløb 48 indføres en varmepumpe. I det i fig. 4 viste 15 udstyr kan der f.eks. være anbragt en strømningsregulator 70 for indsuget luft, f.eks. af den type, der forhandles under handelsbetegnelsen "VARIFLOW”®.The cleaning apparatus according to the invention can be combined or assembled with any other equipment in this technique. Eg. In the embodiment shown in FIG. 3, a heat pump is introduced. In the embodiment of FIG. 4 equipment, e.g. a flow regulator 70 for suction air, e.g. of the type negotiated under the trade name "VARIFLOW" ®.

Claims

DK 163866 B

An apparatus for purifying a gas, such as air contaminated with liquid oily or hydrocarbon compounds (12) dispersed in said gas, which comprises a housing (1) having at least one substantially horizontal supply channel (2) for the gas to be purified, which opens into a purge chamber (4) and at least one gas outlet duct (6) for purified gas, which purge chamber (4) in the gas passage between the supply duct (2) and the outlet duct (6) ) comprises a wall (18) which directs the gas down to the lower portion of the purification chamber (4) and a separator (8.36) for filtering out the contaminated liquid constituents (12), arranged substantially horizontally and transversely to the outflow path of the gas; and a container (10) disposed at the bottom of the cleaning chamber (4) for retaining the separated liquid components (12) which, due to their own weight, fall from the separator (8.36), forcing the gas to be purified 20 past the wall (18) and through the separator (8,36), characterized in that the wall (18) is arranged in its entirety vertically, that the wall (18) is on its wall surface which faces the inflowing gas to be cleaned. has slats (22) extending over this entire wall surface and at a distance from the wall surface, the separator (8,36) comprises a first filter (8) for separating the liquid components (12) of oil or hydrocarbons when they are in the form of small droplets (14), the filter comprising a plurality of layers of metal tissue and, after the first filter (8), calculated in the gas flow direction, an additional filter (36) of a material which absorbs hydrocarbons, preferably polypropylene, is arranged. , for collecting the finest particles.

Apparatus according to claim 1, characterized in that a flushing device (38) for the separator (8) is arranged downstream of the separator (8), preferably arranged for atomizing a suitable means (40), such as a surface. DK 163866 B deactivating agent or solvent. u

Apparatus according to claim 1 or 2, characterized in that a heat exchanger (42) is recovered in the outlet opening (6) of the cleaning chamber (4) which recovers the heat from the flowing purified gas from the cleaning chamber (4) by heating a coolant .

Apparatus according to one or more of claims 1-3, characterized by a shut-off system (60) for tightly insulating the cleaning chamber (4).

Apparatus according to claim 4, characterized in that the shut-off system (60) comprises movable dampers (62,64) arranged in the gas supply ducts (2) and the gas outlet ducts (6) and arranged to close these, and preferably gas supply means. (68) for introducing an inert gas into the purification chamber (4) to avoid any fire hazard.