DE1254087B - Shaft dryer - Google Patents
Shaft dryerInfo
- Publication number
- DE1254087B DE1254087B DEM59040A DEM0059040A DE1254087B DE 1254087 B DE1254087 B DE 1254087B DE M59040 A DEM59040 A DE M59040A DE M0059040 A DEM0059040 A DE M0059040A DE 1254087 B DE1254087 B DE 1254087B
- Authority
- DE
- Germany
- Prior art keywords
- housing
- coolant
- wall
- heat exchanger
- drying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
- C13B40/00—Drying sugar
- C13B40/002—Drying sugar or syrup in bulk
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
- F26B17/14—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas
- F26B17/1433—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material
- F26B17/1466—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being in movement
- F26B17/1483—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being in movement the movement being a rotation around a vertical axis
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Description
BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY
DEUTSCHESGERMAN
PATENTAMTPATENT OFFICE
AUSLEGESCHRIFTEDITORIAL
Int. Cl.:Int. Cl .:
Nummer:
Aktenzeichen:
Anmeldetag:
Auslegetag:Number:
File number:
Registration date:
Display day:
F26bF26b
Deutsche Kl.: 82 a -IOGerman class: 82 a -IO
1254087
M59040X/82a
26. November 1963
9. November 19671254087
M59040X / 82a
November 26, 1963
November 9, 1967
Die Erfindung betrifft einen Schachttrockner mit übereinander in einem zylindrischen Gehäuse angeordneter Kühl- und Trocknungszone, in denen das zu behandelnde Gut im Gegenstrom zum Behandlungsmittel über an der Gehäusewand mit Abstand übereinander befestigten, nach unten geneigten Ablaufplatten und dazwischen an einer zentrischen, in Umlauf versetzbaren Welle befestigten Schleudertellern, von oben nach unten abrieselt und mit Eintritt des Kühlmittels am unteren Ende der Kühlzone; und mit Abzweigung eines Teiles des am oberen Ende der Kühlzone abgesaugten Kühlmittels durch Wärmetauscher in ein das Trocknungszonengehäuse umgebendes zylindrisches Wärmetauschergehäuse, das über dem Wärmetauscher mit der Trocknungszone im Bereich zwischen den beiden Zonen in offener Verbindung steht.The invention relates to a shaft dryer with one above the other in a cylindrical housing Cooling and drying zone in which the material to be treated is in countercurrent to the treatment agent via downwardly inclined drainage plates attached to the housing wall at a distance one above the other and centrifugal discs attached in between to a centric shaft that can be rotated, trickles from top to bottom and with entry of the coolant at the lower end of the cooling zone; and with branching off of part of the coolant sucked off at the upper end of the cooling zone through heat exchangers in a cylindrical heat exchanger housing surrounding the drying zone housing, the above the heat exchanger with the drying zone in the area between the two zones in the open Connection.
Bei einem derartigen Trockner wird in der Kühlzone für die Kühlung des Gutes eine größere Kühlmittelmenge benötigt als in der Trocknungszone für die Trocknung des Naßgutes. Mithin muß im Übergangsteil zwischen Trocknungs- und Kühlzone ein größerer Teil des Kühlmittels aus dem Kühler abgezogen werden.In such a dryer, a larger amount of coolant is used in the cooling zone for cooling the goods required than in the drying zone for drying the wet material. Therefore must be in the transition part A larger part of the coolant is withdrawn from the cooler between the drying and cooling zones will.
Der Erfindung liegt die Aufgabe zugrunde, einen genau festgelegten Anteil des in der Kühlzone bereits aufgewärmten Kühlmittels abzuzweigen und diesen abgezweigten Teil nach kurzer weiterer Aufwärmung innerhalb des Trockners für die Trocknung des Naßgutes im Trocknungsteil zu benutzen, wobei ein Kühlmitteldurchtritt durch den Bereich der Gutabrieselung aus der Trocknungszone in die Kühlzone weitgehend vermieden wird.The invention is based on the object, a precisely defined proportion of the already in the cooling zone divert the warmed-up coolant and this diverted part after a short further warming up to be used inside the dryer for drying the wet material in the drying section, with a coolant passage largely through the area where the product is trickled out from the drying zone into the cooling zone is avoided.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das zylindrische Wärmetauschergehäuse mit seiner nach unten geneigten Unterwand an die Außenwand der Kühlzone anschließt und daß die Eintrittsöffnung in das Wärmetauschergehäuse durch das untere Ende der Unterwand und die unterste Ablaufplatte des im Deckenbereich unter Saugzug stehenden Trocknungszonengehäuses gebildet wird und daß an der zylindrischen Welle höhenverstellbar ein nach unten geneigter Teller unmittelbar über der unteren Ablaufplatte angeordnet ist.This object is achieved in that the cylindrical heat exchanger housing with its downward sloping lower wall connects to the outer wall of the cooling zone and that the inlet opening into the heat exchanger housing through the lower end of the lower wall and the lowest drainage plate of the one under suction in the ceiling area Drying zone housing is formed and that adjustable in height on the cylindrical shaft according to downward inclined plate is arranged directly above the lower drainage plate.
Diese Maßnahme hat nicht nur den Vorteil, daß die zur Trocknung benötigte geringe Behandlungsmittelmenge nur um ein geringes Maß aufgewärmt zu werden braucht, sondern auch ein geringerer Energiebedarf für den Antrieb des Ventilators vorliegt, da die vom Ventilator abzusaugende Behandlungsmittelmenge kleiner ist und durch Wegfall separater Leitungen die Strömungswiderstände geringer werden.This measure not only has the advantage that the small amount of treatment agent required for drying only needs to be warmed up a small amount, but also requires less energy for driving the fan, since the amount of treatment agent to be extracted by the fan is smaller and the elimination of separate lines reduces the flow resistance.
SchachttrocknerShaft dryer
Anmelder:Applicant:
Maschinenfabrik Buckau R. WoKMachine factory Buckau R. WoK
Aktiengesellschaft, GrevenbroichAktiengesellschaft, Grevenbroich
Als Erfinder benannt:Named as inventor:
Heinrich Tillmanns, WevelinghovenHeinrich Tillmanns, Wevelinghoven
Soll beispielsweise ein kombinierter Trockner und Kühler für eine Leistung von etwa 10 t/h Kristallzucker ausgelegt werden, wobei der Zucker mit 500C und einem Wassergehalt von 1,2 % am oberen Ende der Trocknungszone dem Trockner zugeführt und der Zucker am unteren Ende aus der Kühlzone mitIf, for example, a combined dryer and cooler is to be designed for an output of about 10 t / h granulated sugar, the sugar being fed to the dryer at 50 ° C. and a water content of 1.2% at the upper end of the drying zone and the sugar out at the lower end the cooling zone with
. einer Temperatur von 40° C und einem Wassergehalt. a temperature of 40 ° C and a water content
as von 0,1% abgeführt wird, so sind für einen solchen kombinierten Trockner und Kühler etwa 16500 Nm3/h Frischluft von 25° C für die Kühlung und nur 5000 NmVh Heißluft von 75° C für die TrocknungAs 0.1% is removed, for such a combined dryer and cooler there is about 16500 Nm 3 / h fresh air at 25 ° C for cooling and only 5000 NmVh hot air at 75 ° C for drying
, erforderlich. Die Frischluft, die am unteren Ende der Kühlzone mit 25° C eingeführt wird, hat am oberen Ende der Kühlzone eine Temperatur von etwa 60° C angenommen, weil der Zucker mit etwa 650C die Trocknungszone verläßt. Mithin brauchen die für die Trocknung erforderlichen Luftmengen von 5000 Nm8 nur noch von 60 auf 75° C, d. h. also um etwa 15° C erhöht zu werden. Diese Temperaturerhöhung ist ohne weiteres in einem Luftvorwärmer innerhalb des kombinierten Trockners und Kühlers möglich. Um mit Sicherheit zu gewährleisten, daß kein Kühlmittel in die Trocknungszone einströmt, wird mit der Erfindung weiterhin vorgeschlagen, daß die untere Ablaufplatte einen nach unten ragenden, am unteren Ende verengten zylindrischen Stutzen aufweist, über dessen nach innen weisenden verengten Teil an der zylindrischen Welle ein höhenverstellbarer nach unten geneigter Teller angeordnet ist. Durch diese Maßnahme rieselt der getrocknete Zucker zunächst auf die obere Ablaufplatte und sodann auf den verengten Teil des zylindrischen Stutzens und bildet damit zwei natürliche Zuckerschleier, die einen Durchtritt des Kühlmittels aus der Kühlzone in die Trocknungszone jederzeit verhindert., necessary. The fresh air, which is introduced at the lower end of the cooling zone at 25 ° C, has assumed a temperature of about 60 ° C at the upper end of the cooling zone because the sugar leaves with about 65 0 C the drying zone. The air quantities of 5000 Nm 8 required for drying therefore only need to be increased from 60 to 75 ° C, that is to say by about 15 ° C. This temperature increase is easily possible in an air preheater within the combined dryer and cooler. In order to ensure with certainty that no coolant flows into the drying zone, the invention further proposes that the lower drainage plate has a downwardly projecting, constricted at the lower end cylindrical connector, via its inwardly constricted part on the cylindrical shaft height-adjustable downwardly inclined plate is arranged. As a result of this measure, the dried sugar first trickles onto the upper drainage plate and then onto the narrowed part of the cylindrical nozzle, thus forming two natural sugar veils that prevent the coolant from passing through the cooling zone into the drying zone at any time.
709 687/104709 687/104
Claims (3)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM59040A DE1254087B (en) | 1963-11-26 | 1963-11-26 | Shaft dryer |
| US412650A US3261109A (en) | 1963-11-26 | 1964-11-20 | Apparatus for drying and cooling particulated material |
| GB48009/64A GB1084728A (en) | 1963-11-26 | 1964-11-25 | Improvements in or relating to combined drier and cooler apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM59040A DE1254087B (en) | 1963-11-26 | 1963-11-26 | Shaft dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1254087B true DE1254087B (en) | 1967-11-09 |
Family
ID=7309411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEM59040A Pending DE1254087B (en) | 1963-11-26 | 1963-11-26 | Shaft dryer |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3261109A (en) |
| DE (1) | DE1254087B (en) |
| GB (1) | GB1084728A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2115838B2 (en) * | 1971-04-01 | 1978-01-12 | Metallgesellschaft AG, 6000 Frankfurt; Bergwerksverband GmbH, 4300 Essen | METHOD FOR THERMAL AFTER-TREATMENT OF HOT BRIQUETTES |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB291881A (en) * | 1927-03-11 | 1928-06-11 | Thomas Robinson & Son Ltd | Improvements in and connected with conditioning and drying grain |
| CH174404A (en) * | 1933-11-02 | 1935-01-15 | Sahli Arnold | Chute dryer for drying grain with hot air. |
| GB463246A (en) * | 1935-09-21 | 1937-03-22 | Walter Sangwin | Improvements in or relating to apparatus for drying and heating stone, slag, and other materials |
| FR991124A (en) * | 1944-03-31 | 1951-10-01 | Continuous dryer-roaster, can be combined with a crusher | |
| DE1022524B (en) * | 1956-02-04 | 1958-01-09 | August Gronert | Chute dryer for pourable goods |
| FR1187735A (en) * | 1957-04-24 | 1959-09-15 | Linde Maskiner Ab | Drying installation, in particular grain silo |
| DE1076571B (en) * | 1955-05-16 | 1960-02-25 | Ruhrchemie Ag | Device for the successive drying and cooling of grain |
| DE1822888U (en) * | 1959-11-28 | 1960-12-01 | Miag Muehlenbau & Ind Gmbh | HEAT EXCHANGER WITH ROTATING PLATES. |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US463246A (en) * | 1891-11-17 | Brick-press | ||
| US2627399A (en) * | 1947-11-18 | 1953-02-03 | Erie Mining Co | Cement manufacture |
-
1963
- 1963-11-26 DE DEM59040A patent/DE1254087B/en active Pending
-
1964
- 1964-11-20 US US412650A patent/US3261109A/en not_active Expired - Lifetime
- 1964-11-25 GB GB48009/64A patent/GB1084728A/en not_active Expired
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB291881A (en) * | 1927-03-11 | 1928-06-11 | Thomas Robinson & Son Ltd | Improvements in and connected with conditioning and drying grain |
| CH174404A (en) * | 1933-11-02 | 1935-01-15 | Sahli Arnold | Chute dryer for drying grain with hot air. |
| GB463246A (en) * | 1935-09-21 | 1937-03-22 | Walter Sangwin | Improvements in or relating to apparatus for drying and heating stone, slag, and other materials |
| FR991124A (en) * | 1944-03-31 | 1951-10-01 | Continuous dryer-roaster, can be combined with a crusher | |
| DE1076571B (en) * | 1955-05-16 | 1960-02-25 | Ruhrchemie Ag | Device for the successive drying and cooling of grain |
| DE1022524B (en) * | 1956-02-04 | 1958-01-09 | August Gronert | Chute dryer for pourable goods |
| FR1187735A (en) * | 1957-04-24 | 1959-09-15 | Linde Maskiner Ab | Drying installation, in particular grain silo |
| DE1822888U (en) * | 1959-11-28 | 1960-12-01 | Miag Muehlenbau & Ind Gmbh | HEAT EXCHANGER WITH ROTATING PLATES. |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1084728A (en) | 1967-09-27 |
| US3261109A (en) | 1966-07-19 |
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