DE1031761B - Process for the precipitation and thickening of solids from liquids - Google Patents
Process for the precipitation and thickening of solids from liquidsInfo
- Publication number
- DE1031761B DE1031761B DEG12552A DEG0012552A DE1031761B DE 1031761 B DE1031761 B DE 1031761B DE G12552 A DEG12552 A DE G12552A DE G0012552 A DEG0012552 A DE G0012552A DE 1031761 B DE1031761 B DE 1031761B
- Authority
- DE
- Germany
- Prior art keywords
- heat transfer
- fine
- liquid
- thickening
- solids
- 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
- 239000007788 liquid Substances 0.000 title claims description 17
- 238000000034 method Methods 0.000 title claims description 13
- 239000007787 solid Substances 0.000 title description 6
- 230000008719 thickening Effects 0.000 title description 6
- 238000001556 precipitation Methods 0.000 title description 5
- 239000000126 substance Substances 0.000 claims description 4
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 239000000969 carrier Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
-
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
Verfahren zum Ausfällen und Eindicken von Feststoffen aus Flüssigkeiten Zum Ausfällen und Eindicken von Feststoffen aus Flüssigkeiten sind, abgesehen von den üblichen Verdampfungsverfahren, solche Verfahren bekannt, bei denen feinkörnige Wärmeträger verwandt werden.Process for precipitating and thickening solids from liquids For the precipitation and thickening of solids from liquids, apart from the usual evaporation processes, known such processes in which fine-grained Heat transfer media are used.
Die feinkörnigen Wärmeträger werden dabei in einem Wärmeträgerbett benutzt. und das zu verdampfende und einzudickende Medium wird mit diesem Wärmeträgerbett in Kontakt gebracht.The fine-grained heat transfer media are in a heat transfer bed used. and the medium to be evaporated and thickened is with this heat transfer bed brought in contact.
Nachteilig ist bei dem bekannten Verfahren, daß es nicht möglich ist, überhitzten Dampf aus der einzudampfenden Flüssigkeit zu erzeugen. Letzteres gelingt deshalb nicht, weil gleichsam ein Mischungseffekt zwischen dem zu behandelnden Medium und den Wärmeträgern vorliegt und solange noch flüssige Phase vorhanden ist, die Mischungstemperatur nicht so hoch liegen kann, daß eine Uberhitzung der abziehenden Brüden erreichbar ist. The disadvantage of the known method is that it is not possible is to generate superheated steam from the liquid to be evaporated. The latter does not succeed because, as it were, a mixture effect between the one to be treated Medium and the heat transfer medium is present and as long as the liquid phase is still present, the temperature of the mixture cannot be so high that overheating of the peelable Vapors is achievable.
Die Erfindung hat sich die Aufgabe gestellt, ein Verfahren zum Ausfällen und Eindicken von Feststoffen aus Flüssigkeiten mit Hilfe feinkörniger Wärmeträger so durchzuführen, daß die abziehenden Brüden in überhitzter Form gewonnen werden können. The object of the invention is to provide a method for precipitation and thickening of solids from liquids with the help of fine-grained heat transfer media to be carried out in such a way that the exhausting vapors are obtained in superheated form can.
Die Erfindung betrifft ein Verfahren zum Ausfällen und Eindicken von Feststoffen aus Flüssigkeit mit Hilfe feinkörniger Wärmeträger und besteht darin, letztere vor dem Inberührungbringen mit der einzudampfenden Flüssigkeit mit den abziehenden Brüden in Berührung zu bringen und diese dadurch zu überhitzen. Eine bevorzugte Ausführungsform der Erfindung ist dadurch gekennzeichnet, daß die Korngröße der feinkörnigen Wärmeträger so gewählt wird, daß diese sich nach hydrodynamischen Gesetzen gleichsam wie eine Flüssigkeit bewegen. Hierzu ist folgendes zu bemerken: Die Gesetze der Hydrodynamik und Aerodynamik ergeben sich als makroskopische Mittelwerte von mikroskopisch statistischen Gesamtheiten. Die einzelnen Moleküle bzw. Atome einer Flüssigkeit oder eines Gases gehorchen dabei den Gesetzen der klassischen Mechanik, d. h. den Stoß- und Fallgesetzen. The invention relates to a method for precipitation and thickening of solids from liquid with the help of fine-grained heat transfer media and consists of the latter before being brought into contact with the liquid to be evaporated with the Bringing the exhausting vapors into contact and thereby overheating them. One preferred embodiment of the invention is characterized in that the grain size the fine-grained heat transfer medium is chosen so that it is hydrodynamic Laws move like a liquid. The following should be noted in this regard: The laws of hydrodynamics and aerodynamics result as macroscopic mean values of microscopic statistical aggregates. The individual molecules or atoms a liquid or a gas obey the laws of the classical Mechanics, d. H. the laws of collision and fall.
Nach der erwähnten bevorzugten Lehre der Erfindung ist es möglich, die Korngröße der Wärmeträger so einzustellen, daß auch für die Bewegung der Wärmeträgergesamtheiten die Gesetze der Hydrodynamik gelten. Das bedeutet, daß man für die Bewegung der Wärmeträger so rechnen und dimensionieren kann, als ströme eine Flüssigkeit oder ein Gas. Letzteres ist von erheblichem Vorteil, da erfindungsgemäß die Wärmeträger mit den abziehenden Brüden in Berührung gebracht und also selbst im Kreisstrom oder in ähnlicher Weise geführt werden müssen.According to the preferred teaching of the invention mentioned, it is possible adjust the grain size of the heat carrier so that also for the movement of the heat carrier aggregates the laws of hydrodynamics apply. That means that one is responsible for the movement of the Heat transfer medium can calculate and dimension as if a liquid or flow a gas. The latter is of considerable advantage since, according to the invention, the heat transfer medium brought into contact with the exhausting vapors and thus even in the circulating current or need to be managed in a similar manner.
Im allgemeinen wird man bei dem erfindungsgemäßen Verfahren in an sich bekannter Weise die Wärmeträger im Gegenstrom zu den Brüden führen. In general, you will in the process according to the invention in in a known manner, the heat transfer medium lead in countercurrent to the vapors.
Als feinkörnige Wärmeträger oder in feine Tropfen zerlegte feuerflüssige Stoffe kommen dabei bevorzugt in der Lösung einzudickende oder aus der Flüssigkeit ausfallende Substanzen zur Verwendung.As fine-grained heat transfer medium or in fine droplets disassembled fiery liquids Substances come preferably from the solution or from the liquid precipitating substances for use.
Die durch die Erfindung erreichten Vorteile bestehen vor allem darin, daß die abziehenden Brüden in überhitzter Form gewonnen werden können, wodurch sie einer weiteren industriellen Verwendung, sei es als Wärmeträger in Wärmekraftprozessen, sei es zu weiterer Aufbereitung oder weiteren chemischen Reaktionen zur Verfügung stehen. The advantages achieved by the invention consist primarily in that the exhausting vapors can be obtained in superheated form, whereby they another industrial use, be it as a heat transfer medium in thermal power processes, be it available for further processing or further chemical reactions stand.
PATENTANSPB8CHE 1. Verfahren zum Ausfällen und Eindicken von Feststoffen aus Flüssigkeiten mit Hilfe feinkörniger Wärmeträger, dadurch gekennzeichnet, daß letztere vor dem Inberührungbringen mit der einzudampfenden Flüssigkeit mit den abziehenden Brüden in Berührung gebracht und diese dadurch überhitzt werden. PATENT APPLICATIONS 1. Process for Precipitation and Thickening of Solids from liquids with the aid of fine-grain heat carriers, characterized in that the latter before being brought into contact with the liquid to be evaporated with the brought into contact with withdrawing vapors and these become overheated as a result.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG12552A DE1031761B (en) | 1952-12-05 | 1952-12-05 | Process for the precipitation and thickening of solids from liquids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG12552A DE1031761B (en) | 1952-12-05 | 1952-12-05 | Process for the precipitation and thickening of solids from liquids |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1031761B true DE1031761B (en) | 1958-06-12 |
Family
ID=7119829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEG12552A Pending DE1031761B (en) | 1952-12-05 | 1952-12-05 | Process for the precipitation and thickening of solids from liquids |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1031761B (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB568913A (en) * | 1941-06-19 | 1945-04-26 | Standard Oil Dev Co | Improvements relating to the temperature control of vapour phase chemical reactions |
US2445092A (en) * | 1946-08-02 | 1948-07-13 | Socony Vacuum Oil Co Inc | Process and apparatus for heat transfer with granular solids |
US2554435A (en) * | 1946-07-29 | 1951-05-22 | Phillips Petroleum Co | Apparatus for effecting contact between a gas and a downwardly flowing contiguous mass of pebbles |
US2576058A (en) * | 1946-08-12 | 1951-11-20 | Phillips Petroleum Co | Process and apparatus for heat exchange employing granular particles |
-
1952
- 1952-12-05 DE DEG12552A patent/DE1031761B/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB568913A (en) * | 1941-06-19 | 1945-04-26 | Standard Oil Dev Co | Improvements relating to the temperature control of vapour phase chemical reactions |
US2554435A (en) * | 1946-07-29 | 1951-05-22 | Phillips Petroleum Co | Apparatus for effecting contact between a gas and a downwardly flowing contiguous mass of pebbles |
US2445092A (en) * | 1946-08-02 | 1948-07-13 | Socony Vacuum Oil Co Inc | Process and apparatus for heat transfer with granular solids |
US2576058A (en) * | 1946-08-12 | 1951-11-20 | Phillips Petroleum Co | Process and apparatus for heat exchange employing granular particles |
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