SE449924B - Scrap-drying tunnel oven - Google Patents
Scrap-drying tunnel ovenInfo
- Publication number
- SE449924B SE449924B SE8103917A SE8103917A SE449924B SE 449924 B SE449924 B SE 449924B SE 8103917 A SE8103917 A SE 8103917A SE 8103917 A SE8103917 A SE 8103917A SE 449924 B SE449924 B SE 449924B
- Authority
- SE
- Sweden
- Prior art keywords
- scrap
- furnace
- combustion chamber
- cargo containers
- flue gas
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
- F26B15/14—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by trays or racks or receptacles, which may be connected to endless chains or belts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/02—Heating arrangements using combustion heating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
35 449 924 hantering av skrot. Materialet 1 lagras i bingar 2, över vilka en travers 3 är anordnad. Traversen 3 är försedd med en lyftmagnet 4 för upplyftning av materialet 1 från 'rfflïl bingarna 2. 35,449,924 handling of scrap. The material 1 is stored in bins 2, over which a traverse 3 is arranged. The traverse 3 is provided with a lifting magnet 4 for lifting the material 1 from the bins 2.
Materialet transporteras av traversen 3 till på en transpor- tör 5 anordnade lastbehållare 6, vilka är avsedda att upp- taga materialet i ett lastutrymme. Lastbehållarna 6 är öppna uppåt och är försedda med gallerdurk eller liknande, vars ändamål kommer att framgå av det följande. Transportören 5, som exempelvis kan vara en rullbana, är anordnad att trans- portera lastbehållarna 6 till en torkugn 7, som visas sche- matiskt på fig. 2. Transportören 5 kan antingen vara i det närmaste horisontell eller luta något mot horisontalplanet, så att lastbehållarna 6 förs mot torkugnen 7 av tyngdkraf- ten.The material is transported by the traverse 3 to load containers 6 arranged on a conveyor 5, which are intended to receive the material in a cargo space. The cargo containers 6 are open upwards and are provided with a grid floor or the like, the purpose of which will be apparent from the following. The conveyor 5, which may be, for example, a roller conveyor, is arranged to transport the cargo containers 6 to a drying kiln 7, which is shown schematically in Fig. 2. The conveyor 5 can either be almost horizontal or be inclined slightly towards the horizontal plane, so that the load containers 6 are moved towards the drying oven 7 by gravity.
Torkugnen 7 består av en förugn 8 utan botten och en tunnel- ugn 9, varvid förugnen 8 är placerad före tunnelugnen 9 sett i transportriktningen 11. I tunnelugnen 9 är en brännkammare 10 med brännare 12 anordnad för tillförsel av värme underi- från till lastbehållarna 6, då de förs genom ugnen 7. På grund av att lastbehållarna har gallerdurk, kan den i bränn- kammaren 10 bildade rökgasen passera genom behållarna 6 i direkt kontakt med materialet 1 för effektiv uppvärmning därav. Rökgaserna samlas i överdelen av tunnelugnen 9 och kan till större delen via spjäll 13 och kanaler 14 samt med hjälp av en fläkt 15 tryckas tillbaka till brännkammaren 10 för att där blandas med den nya rökgasen. Härigenom kan stora rökgasmängder vid relativt låg temperatur, 200oC - 400°C, bringas att passera genom lastbehållarna 6 och eliminera all fukt. Denna recirkulation av rökgaserna är på fig. 2 markerad med pilen a. ~ I anslutning till fläkten 15 är ett spjäll 16 anordnat för att avleda en mindre del av rökgaserna (markerad med pilen *r G1 20 449 924 b) genom förugnen 8 i kontakt med materialet 1 i lastbe- hàllarna 6, så att en föruppvärmning därav äger rum; Även denna värmning sker genom att rökgaserna bringas att passera genom behållarna 6 från undersidan. Denna del av rökgaserna får sedan passera ut genom förugnens 8 inmatningsöppning.The drying oven 7 consists of a pre-oven 8 without a bottom and a tunnel oven 9, the pre-oven 8 being located before the tunnel oven 9 seen in the transport direction 11. In the tunnel oven 9 a combustion chamber 10 with burner 12 is arranged for supplying heat from below to the cargo containers 6. , when they are passed through the furnace 7. Because the cargo containers have a grid floor, the flue gas formed in the combustion chamber 10 can pass through the containers 6 in direct contact with the material 1 for efficient heating thereof. The flue gases collect in the upper part of the tunnel furnace 9 and can for the most part via dampers 13 and ducts 14 and by means of a fan 15 be pushed back to the combustion chamber 10 to be mixed there with the new flue gas. As a result, large amounts of flue gas at a relatively low temperature, 200 ° C - 400 ° C, can be passed through the cargo containers 6 and eliminate all moisture. This recirculation of the flue gases is marked in Fig. 2 by the arrow a. In connection with the fan 15, a damper 16 is arranged to divert a small part of the flue gases (marked by the arrow * r G1 20 449 924 b) through the furnace 8 in contact with the material 1 in the cargo containers 6, so that a preheating thereof takes place; This heating also takes place by causing the flue gases to pass through the containers 6 from the underside. This part of the flue gases is then allowed to pass out through the inlet opening of the furnace 8.
Genom föruppvärmningen av materialet bringas eventuell snö och is därpå att smälta, varvid smältvattnet c kan rinna undan, eftersom förugnen 8 saknar botten.Due to the preheating of the material, any snow and ice is then caused to melt, whereby the melt water c can drain away, since the pre-furnace 8 lacks a bottom.
Lastbehållarna 6 med det torkade materialet 1 kan avhämtas från transportören 5 med hjälp av truckar 17 och antingen lagras inomhus eller direkt tömmas i smältugnar 18f De tömda behållarna 6 återföras sedan till transportören 5.The cargo containers 6 with the dried material 1 can be picked up from the conveyor 5 by means of trucks 17 and either stored indoors or emptied directly in melting furnaces 18f. The emptied containers 6 are then returned to the conveyor 5.
Det ovan beskrivna utgör endast ett exempel på realiserandet . av uppfinningsidén. Så t.ex. är andra hanteringsutrustningar för materialet än de beskrivna möjliga.The above is only an example of the realization. of the inventive idea. So e.g. are other handling equipment for the material than those described possible.
Genom recirkulation av rökgaserna samt delvis avledning därav till en förugn enligt uppfinningen har åstadkommits en anläggning för torkning av material med god värmeekonomi.By recirculating the flue gases and partially diverting them to a pre-furnace according to the invention, a plant has been provided for drying materials with good heat economy.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8103917A SE449924B (en) | 1981-06-23 | 1981-06-23 | Scrap-drying tunnel oven |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8103917A SE449924B (en) | 1981-06-23 | 1981-06-23 | Scrap-drying tunnel oven |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8103917L SE8103917L (en) | 1982-12-24 |
SE449924B true SE449924B (en) | 1987-05-25 |
Family
ID=20344123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8103917A SE449924B (en) | 1981-06-23 | 1981-06-23 | Scrap-drying tunnel oven |
Country Status (1)
Country | Link |
---|---|
SE (1) | SE449924B (en) |
-
1981
- 1981-06-23 SE SE8103917A patent/SE449924B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE8103917L (en) | 1982-12-24 |
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NUG | Patent has lapsed |
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