DE177798C - - Google Patents
Info
- Publication number
- DE177798C DE177798C DENDAT177798D DE177798DA DE177798C DE 177798 C DE177798 C DE 177798C DE NDAT177798 D DENDAT177798 D DE NDAT177798D DE 177798D A DE177798D A DE 177798DA DE 177798 C DE177798 C DE 177798C
- Authority
- DE
- Germany
- Prior art keywords
- sand
- dried
- hot
- gas
- 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.)
- Active
Links
- 239000004576 sand Substances 0.000 claims description 28
- 239000007789 gas Substances 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000002737 fuel gas Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims 2
- 239000000463 material Substances 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
- F26B3/20—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor
- F26B3/205—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor the materials to be dried covering or being mixed with heated inert particles which may be recycled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/14—Sand
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Drying Of Solid Materials (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Gegenstand der Erfindung ist ein Verfahren zur Erzeugung von Brenngas bei Sandtrocknern u. dgl, unter gleichzeitiger Trocknung frischen Sandes und Kühlung des getrockneten Sandes, sowie eine zur Ausführung dieses Verfahrens dienende Vorrichtung. The invention relates to a method for generating fuel gas in sand dryers and the like, with simultaneous drying of fresh sand and cooling of the dried one Sand, as well as a device serving to carry out this process.
Hierbei verfährt man in der Weise, daß dem aus der eigentlichen Trockenvorrichtung,Here one proceeds in such a way that the from the actual drying device,
ίο beispielsweise einer in an sich bekannter Weise eingerichteten Trockentrommel kommenden, bereits getrockneten heißen Sande, frischer nasser Sand beigemischt wird; der aus diesem zugesetzten feuchten Sande alsdann entweichende Wasserdampf wird hierauf über den bereits getrockneten heißen Sand hinweggeleitet, dadurch hoch erhitzt und schließlich in den Verbrennungsraum eines Gaserzeugers geführt, wo er sich unter der Einwirkung von Kohlenoxydgas zu Wassergas umsetzt.ίο for example one in itself known Wisely arranged drying drum coming, already dried hot sands, fresh wet sand is added; the moist sand added from this then Escaping water vapor is then hot over the already dried one Sand passed away, thereby heated up and finally into the combustion chamber of a gas generator, where it is under the action of carbon dioxide gas Converts water gas.
Eine zur Ausführung dieses Verfahrens geeignete Vorrichtung ist auf der Zeichnung in mehreren Längs- und Querschnitten veranschaulicht. An apparatus suitable for carrying out this process is shown in the drawing illustrated in several longitudinal and cross sections.
Die Feuerung besteht aus einem Gasgenerator, welcher dicht an die Trockentrommel angebaut ist, um eine Temperaturherabsetzung der brennbaren Gase durch längere Gaszuleitungen zu vermeiden.The furnace consists of a gas generator, which is close to the drying drum is built to reduce the temperature of the flammable gases through longer gas supply lines to avoid.
Die Verbrennungsluft tritt durch die Öffnungen b Und c in die Kanäle a (Fig. 1, 2 und 3), die im Mauerwerke und im Gewölbe des Generators sowie in der Feuerbrücke ausgespart sind. Sie steigt in den Kanälen empor und erhitzt sich, bevor sie bei d mit den vom Generator kommenden heißen Gasen zusammentrifft.The combustion air passes through the openings b and c in the channels a (Fig. 1, 2 and 3), which are cut out in the masonry and in the vault of the generator as well as in the fire bridge. It rises in the channels and heats up before it meets the hot gases coming from the generator at d.
Da die Generatorgase und die Verbrennungsluft erhitzt sind, bevor sie zusammenkommen, so wird die chemische Affinität der Verbrennung erhöht und ein so hoher Hitzegrad erzeugt, wie er zur Bildung von Wassergas aus hochüberhitztem Dampf und Kohlenoxydgas nötig ist. Der getrocknete Sand wird gleichzeitig auf 6oo° bis 8oo° C. erhitzt. Since the generator gases and the combustion air are heated before they come together, this increases the chemical affinity of the combustion and generates such a high degree of heat, as he did for the formation of water gas from highly superheated steam and carbon oxide gas is necessary. The dried sand is heated to 600 ° to 8oo ° C. at the same time.
Um hierbei die Trockentrommel vor der schädlichen Einwirkung der Stichflamme zu schützen, ist das Gewölbe über dem Verbrennungsraum d (Fig. 1 und 3) möglichst weit herabgezogen.In order to protect the drying drum from the harmful effects of the jet flame, the vault above the combustion chamber d (FIGS. 1 and 3) is drawn down as far as possible.
Der aus der Trockentrommel kommende getrocknete heiße Sand (oder anderes kleinstückiges Gut) wird durch das geneigte rechteckige Rohr e (Fig. 3) der Förderschnecke g zugeführt, welche das Trockengut weiter befördert.The dried hot sand coming from the drying drum (or other small pieces of material) is fed through the inclined rectangular tube e (FIG. 3) to the screw conveyor g , which conveys the material to be dried on.
Da der getrocknete Sand, wenn er die Trommel verläßt, eine Temperatur hat, die zwischen 6oo° und 8oo° C. schwankt, so ist eine Einrichtung getroffen, welche den Zweck hat, diese Hitze, wie später erläutert, durch Hinzufügung einer entsprechenden Menge kalten, feuchten Sandes auszunutzen.Since the dried sand, when it leaves the drum, has a temperature that fluctuates between 600 ° and 8oo ° C., an arrangement has been made which serves the purpose has this heat, as explained later, by adding an appropriate amount take advantage of cold, damp sand.
Zu diesem Zwecke wird feuchter Sand in den Fülltrichter/ (Fig. 3 und 4) aufgegeben und durch eine Speiseschnecke, deren Um-For this purpose, moist sand is added to the filling funnel / (Fig. 3 and 4) and by a food snail, the circumference of which
drehungszahl nach Bedarf geregelt werden kann, dem heißen Sande zugeführt, um von der Förderschnecke g (Fig. 3 und 4) aufgenommen und mit dem heißen Sande innig gemischt zu werden. Hierdurch wird der nachträglich hinzugefügte feuchte Sand ohne weiteren Brennstoffaufwand getrocknet und gleichzeitig der bereits in der Trommel getrocknete heiße Sand soweit abgekühlt, daß er ohne Kühlvorrichtung und ohne Zeitverluste unmittelbar seinem Bestimmungsorte zugeführt und weiter verarbeitet werden kann. Der aus dem zugesetzten feuchten Sandspeed can be regulated as required, fed to the hot sand to be taken up by the screw conveyor g (Fig. 3 and 4) and intimately mixed with the hot sand. As a result, the subsequently added moist sand is dried without additional fuel expenditure and at the same time the hot sand already dried in the drum is cooled down to such an extent that it can be fed directly to its destination and processed further without a cooling device and without loss of time. The one from the added damp sand
■ . entweichende Wasserdampf wird durch den Zug des Ofens angesaugt und streicht durch das geneigte Rohr e (Fig. 3) in naher Berührung mit dem in entgegengesetzter Richtung abfallenden, aus der Trockentrommel kommenden heißen Sande langsam empor, um schließlich in den Verbrennungsraum d zu gelangen. "■. Escaping water vapor is sucked in by the draft of the furnace and passes slowly up through the inclined tube e (Fig. 3) in close contact with the hot sand falling in the opposite direction, coming from the drying drum, to finally reach the combustion chamber d . "
Während seiner Aufwärtsbewegung über den heißen Sand wird der Wasserdampf nach und nach bis auf beiläufig 600 ° bis 7000C. erhitzt, so daß er unter Mitwirkung des im Generatorgases enthaltenen Kohlenoxydgases bei seinem Eintreten in den Verbrennungsraum in brennbares Gas übergeführt wird; denn es ist bekannt, daß Wasserdampf bei einer Temperatur von 600 ° C. und bei Gegenwart von Kohlenoxydgas sich wie folgt umsetzt:During its upward movement through the hot sand is the water vapor to and heated by up to casual 600 ° to 700 0 C., so that it is converted, composed of carbonic oxide contained in the generator gas at its entry into the combustion chamber in the combustible gas; because it is known that water vapor is converted as follows at a temperature of 600 ° C. and in the presence of carbon dioxide gas:
H2O -f CO = 2 H + CO^. H 2 O -f CO = 2 H + CO ^.
In ähnlicher Weise wie bei Sandtrocknern kann die Erfindung auch in Verbindung mit Trockenvorrichtungen für anderes stückiges Gut zur Anwendung gebracht werden.In a similar way to sand dryers, the invention can also be used in conjunction with Drying devices for other lumpy goods are used.
Claims (2)
Publications (1)
Publication Number | Publication Date |
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DE177798C true DE177798C (en) |
Family
ID=442238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DENDAT177798D Active DE177798C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE177798C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4018521A1 (en) * | 1990-06-09 | 1991-12-12 | Quick Mix Gruppe Gmbh & Co Kg | METHOD AND DEVICE FOR TREATING WET SAND TO DRY SAND |
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0
- DE DENDAT177798D patent/DE177798C/de active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4018521A1 (en) * | 1990-06-09 | 1991-12-12 | Quick Mix Gruppe Gmbh & Co Kg | METHOD AND DEVICE FOR TREATING WET SAND TO DRY SAND |
EP0461356A1 (en) * | 1990-06-09 | 1991-12-18 | quick-mix Gruppe GmbH & Co. KG | Method and apparatus for processing wet sand into dry sand |
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