DE1173020B - Process for cooling or heating a powdery material while it is being conveyed on an inclined, gas-permeable vibrating conveyor surface - Google Patents
Process for cooling or heating a powdery material while it is being conveyed on an inclined, gas-permeable vibrating conveyor surfaceInfo
- Publication number
- DE1173020B DE1173020B DEF25118A DEF0025118A DE1173020B DE 1173020 B DE1173020 B DE 1173020B DE F25118 A DEF25118 A DE F25118A DE F0025118 A DEF0025118 A DE F0025118A DE 1173020 B DE1173020 B DE 1173020B
- Authority
- DE
- Germany
- Prior art keywords
- coarse
- particles
- gas
- fine particles
- conveyed
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C3/00—Other direct-contact heat-exchange apparatus
- F28C3/10—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material
- F28C3/12—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid
- F28C3/16—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid the particulate material forming a bed, e.g. fluidised, on vibratory sieves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jigging Conveyors (AREA)
Description
Verfahren zum Abkühlen oder Erwärmen eines pulverförmigen Materials während der Förderung auf einer geneigten, gaspermeablen Vibrationsförderfläche Die Erfindung betrifft ein Verfahren zum Abkühlen oder Erwärmen eines aus feinen und groben Teilchen bestehenden pulverförmigen Materials während der Förderung auf einer langgestreckten, geneigten, gaspermeablen Vibrationsförderfläche, durch die hindurch ein Gas mit einer von der Temperatur des Materials abweichenden Temperatur in solcher Menge in das darüberliegende Material eingeleitet wird, daß die groben Teilchen eine auf der Förderfläche aufliegende, durch Vibration bewegte Schicht bilden, oberhalb welcher die feinen Teilchen in fließfähigem Zustand gehalten werden.Process for cooling or heating a powdery material while conveying on an inclined, gas-permeable vibratory conveying surface The invention relates to a method for cooling or heating one of fine and coarse particles of existing powdery material during the conveyance an elongated, inclined, gas-permeable vibratory conveyor surface through which through a gas with a temperature different from the temperature of the material is introduced into the overlying material in such an amount that the coarse Particles a layer that rests on the conveying surface and is moved by vibration form above which the fine particles are kept in a flowable state.
Es sind bereits Vorrichtungen zur Durchführung eines derartigen Verfahrens bekanntgeworden, bei denen die groben und die feinen Teilchen am Ende der Förderstrecke ein willkürliches Temperaturverhältnis angenommen haben. Das Erzielen einer maximalen Förderleistung stand bei diesen Vorrichtungen im Vordergrund und nicht das Erreichen eines vorbestimmten Temperaturverhältnisses der Teilchen, wie es bei dem erfindungsgemäßen Verfahren angestrebt wird. Das Einblasen von erwärmtem oder gekühltem Gas in das Fördergut bedingt einen Wärmeaustausch sowohl mit den groben als auch mit den feinen Teilchen des Fördergutes. Das Ausmaß des sich einstellenden Wärmeaustausches ist hierbei jedoch rein zufällig und hängt von der gewählten Kombination von Verfahrensbedingungen, wie Art und Zusammensetzung des Fördergutes, Art und Neigung der durchlässigen Förderfläche, Amplitude der Vibrationsbewegung und der Menge der eingeblasenen Luft ab. There are already devices for carrying out such a method became known, in which the coarse and the fine particles at the end of the conveyor line have assumed an arbitrary temperature relationship. Achieving a maximum With these devices, the focus was on conveying performance and not on achieving it a predetermined temperature ratio of the particles, as in the case of the invention Procedure is sought. The injection of heated or cooled gas into the The conveyed material requires a heat exchange with both the coarse and the fine ones Particles of the conveyed material. The extent of the resulting heat exchange is in this case, however, purely coincidental and depends on the selected combination of process conditions, such as the type and composition of the material to be conveyed, the type and inclination of the permeable conveying surface, The amplitude of the vibratory movement and the amount of air blown in.
Bewegen sich beispielsweise feine und grobe Teilchen mit gleicher Geschwindigkeit über die Förderfläche, so ist die Dauer des Wärmeaustausches für alle Teilchen dieselbe. Infolge der größeren Wärmekapazität der groben Teilchen ist ihre Temperaturänderung am Ende des Weges geringer als diejenige der feinen Teilchen mit geringerer Wärmekapazität. For example, fine and coarse particles move at the same rate Speed over the conveying surface, then the duration of the heat exchange for all particles the same. Due to the larger heat capacity of the coarse particles their temperature change at the end of the path is less than that of the fine ones Particles with a lower heat capacity.
Noch erheblicher wird dieser Unterschied, wenn die feinen Teilchen infolge ihrer erhöhten Fließfähigkeit sich schneller als die groben bewegen.This difference becomes even more significant when the fine particles move faster than the coarse ones due to their increased fluidity.
Aufgabe der Erfindung ist die Schaffung eines Verfahrens, mit dem es möglich ist, die bei einem Wärmeaustausch auftretenden Temperaturänderungen der Teilchen in einer gewünschten Weise zu beeinflussen. The object of the invention is to create a method with which it is possible, the temperature changes occurring during a heat exchange of the Influencing particles in a desired manner.
Erreicht wird dies erfindungsgemäß dadurch, daß das Material während einer durch die Neigung und Vibrationsbewegung der Förderfläche für die groben und feinen Teilchen gesondert eingestellten Verweilzeit einem Wärmeaustausch unterworfen wird, und zwar derart, daß die groben und die feinen Teilchen am Ende der Förderstrecke ein vorbestimmtes Temperaturverhältnis angenommen haben.This is achieved according to the invention in that the material during one by the inclination and vibration movement of the conveying surface for the coarse and fine particles separately set residence time subjected to a heat exchange is, in such a way that the coarse and the fine particles at the end of the conveyor line have assumed a predetermined temperature relationship.
Gemäß einer besonderen Ausgestaltung wird das erfindungsgemäße Verfahren so durchgeführt, daß die Verweilzeit der groben und feinen Teilchen derart eingestellt wird, daß am Ende der Förderstrecke die Teilchen praktisch gleiche Temperatur angenommen haben. According to a particular embodiment, the method according to the invention carried out so that the residence time of the coarse and fine particles is adjusted is that at the end of the conveyor line the particles assume practically the same temperature to have.
Durch die Erfindung kann die bei dem bekannten Förderverfahren auftretende Schichtbildung in einfacher, jedoch äußerst wirksamer Weise ausgenutzt werden, um die bei einem Wärmeaustausch auftretenden Temperaturänderungen der Teilchen des pulverförmigen Materials in der gewünschten Weise zu beeinflussen. With the invention, the occurring in the known conveying method Layer formation can be used in a simple, but extremely effective manner the temperature changes of the particles of the occurring during a heat exchange influence powdery material in the desired way.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF25118A DE1173020B (en) | 1958-02-26 | 1958-02-26 | Process for cooling or heating a powdery material while it is being conveyed on an inclined, gas-permeable vibrating conveyor surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF25118A DE1173020B (en) | 1958-02-26 | 1958-02-26 | Process for cooling or heating a powdery material while it is being conveyed on an inclined, gas-permeable vibrating conveyor surface |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1173020B true DE1173020B (en) | 1964-06-25 |
Family
ID=7091491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF25118A Pending DE1173020B (en) | 1958-02-26 | 1958-02-26 | Process for cooling or heating a powdery material while it is being conveyed on an inclined, gas-permeable vibrating conveyor surface |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1173020B (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2795318A (en) * | 1955-11-16 | 1957-06-11 | Carrier Conveyor Corp | Method of and apparatus for conveying pulverulent material |
-
1958
- 1958-02-26 DE DEF25118A patent/DE1173020B/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2795318A (en) * | 1955-11-16 | 1957-06-11 | Carrier Conveyor Corp | Method of and apparatus for conveying pulverulent material |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1023889B (en) | Process for the production of the purest crystalline substances, preferably semiconductor substances | |
DE2154835A1 (en) | Crystallization column | |
DE2614957C3 (en) | Process for the production of casting powder | |
DE1173020B (en) | Process for cooling or heating a powdery material while it is being conveyed on an inclined, gas-permeable vibrating conveyor surface | |
DE644121C (en) | Process for the manufacture of a cigar matting agent | |
DE1167766B (en) | Use of the air setting process to separate sintered dolomite and sintered magnesite | |
DE128231C (en) | ||
DE351206C (en) | Process for the production of propellants from ammonium nitrate and carbonaceous substances | |
DE2347351A1 (en) | PROCESS FOR IMPROVING THE TRANSPORTATION AND STORAGE PROPERTIES OF THIN URBUS | |
DE337088C (en) | Process for drying wood and other dry goods | |
DE2026533A1 (en) | Salt mixture for salting meat - including sodium - nitrite and/or nitrate | |
DE1228237B (en) | Process for the production of sodium sulfate or potassium sulfate in a rotating drum | |
DD141821A2 (en) | PROCESS FOR PREPARING ABRASIVE NON-DUSTING CALIDUENEGRANEAN GRANULES | |
DE624977C (en) | Process for coring fine ores and other raw materials, especially roasted cover | |
DE971735C (en) | Process for preventing dust when conveying permanently magnetic iron or steel powder | |
DE941195C (en) | Process for powdering grainy fertilizers, especially calcium ammonium nitrate | |
DE701072C (en) | Process and device for the production of chlorinated lime | |
AT264472B (en) | Method and device for agglomerating materials | |
DE3003183A1 (en) | Abrasion resistant potassium fertiliser granules prodn. - by wetting granules at specified temp. for optimum strength | |
DE825374C (en) | Process for the production of graphite articles, in particular crucibles | |
DE1115225B (en) | Method and device for the production of cores coated with a powdery material | |
AT42165B (en) | Method and device for the preparation and enrichment of ores or the like by means of a liquid flow increasing on inclined guide surfaces. | |
DE722896C (en) | Process for the production of sulfuric acid from gases containing SO | |
DE631081C (en) | Production of trialkali phosphate from ferrophosphorus | |
DE1118912B (en) | Continuous use of coke as a heat carrier in continuously operating cracking processes |