DE416600C

DE416600C - Method and device to expel a liquid of high specific gravity or low temperature from cellulose, peat mass and similar masses in a specific operation by means of a liquid of low specific gravity or high temperature or to heat the mass

Info

Publication number: DE416600C
Application number: DEM82172D
Authority: DE
Original assignee: TORBJOERN NILS MAGNUS MOLIN
Current assignee: TORBJOERN NILS MAGNUS MOLIN
Publication date: 1925-07-22

Description

Die Erfindung betrifft ein Verfahren und eine Einrichtung, um aus Zellstoff, Torf und ähnlichen Stoffen eine schwerere Flüssigkeit mittels einer leichteren auszutreiben und zu ersetzen. Hierunter gehört auch der Fall, daß man Wasser von einer niedrigeren Temperatur und folglich von einem höheren spezifischen Gewicht durch Wasser austreibt und ersetzt, welches eine höhere Temperatur und folglich ein niedrigeres spezifisches Gewicht besitzt.The invention relates to a method and a device to from pulp, peat and similar substances to expel a heavier liquid by means of a lighter one substitute. This also includes the case that water is at a lower temperature and consequently expels and replaces of a higher specific gravity by water, which has a higher temperature and consequently has a lower specific gravity.

Die Erfindung kann beispielsweise in den folgenden Fällen mit Vorteil verwendet werden: For example, the invention can be used to advantage in the following cases:

I. Für die Entfernung der die gelöste Holz-, substanz enthaltenen Lauge aus der Kochermasse bei der Darstellung von Natron- oder Sulfitzellstoff.I. For the removal of the dissolved wood substance contained in the lye from the digester mass in the representation of soda or sulphite pulp.

2. Für die Erwärmung von Zellstoffmasse mit einem Wassergeha't von etwa 80 bis 99 Prozent, die später einer Wasserauspressung unterworfen werden soll, um dadurch die Wasserauspressung zu erleichtern.2. For the heating of pulp with a water content of about 80 to 99 percent, which is later to be subjected to a water squeeze in order to achieve the water squeeze to facilitate.

3. Für die Erwärmung (evtl. unter Druck) von wasserhaltigem Torf, welcher später einer Wasserauspressung ausgesetzt werden soll, um dadurch die Wasserausscheidung zu erleichtern.3. For the heating (possibly under pressure) of water-containing peat, which later to be exposed to a water squeeze in order to thereby the water excretion facilitate.

Im ersten Falle wird die Lauge in der Masse durch Wasser ersetzt und in den zwei letzten Fällen wird Wasser von einer niedrigeren Temperatur durch Wasser von einer höheren Temperatur ersetzt, wodurch somit eine Erwärmung der Masse erreicht wird.In the first case, the lye is replaced by water in the bulk and in the two latter cases, water of a lower temperature is replaced by water of one Replaced higher temperature, whereby a heating of the mass is achieved.

Beim vorliegenden Verfahren wird die zu behandelnde Masse von einem Vorratsbehälter in den unteren Teil eines anderen Behälters, des Diffusionsbehälters, gedrückt, der einen inneren gelochten Boden besitzt. Gemäß der Erfindung läßt man in diesem Behälter die Masse steigen und führt sie am oberen Teil des Behälters, befreit von der schweren Flüssigkeit, aus dem Behälter hinaus. Während die Masse im Diffusionsbehälter steigt, drückt man eine im oberen Behälterteil eingelassene leichtere Flüssigkeit durch die Masse (oder läßt die Flüssigkeit durch dieselbe rieseln) in einer Richtung entgegen der Bewegungsrichtung der Masse, wodurch die mit der Masse hineingeführte schwerere Flüssigkeit sowie evtl. beigemischte feste Bestandteile durch die Löcher in der Bodenplatte abgeführt werden. Die schwerere Flüssigkeit wird darauf mit folgenden festen Teilen (z. B. Zellstoffasern) in einem dritten Behälter (der Faserausscheider) befreit, in dessen oberen Teil ein Sieb angebracht ist, welches die schwere Flüssigkeit passieren muß, ehe sie weggeleitet wird. Vom unteren Teil des Faserausscheiders werden die abgeschiedenen festen Teile dem Diffusionsbehälter wieder zugeführt. Auf diese Weise vermeidet man, daß das feinere Sieb, das zur vollständigen Ausscheidung der festen Teile aus der schwereren Flüssigkeit notwendig ist, ganz oder teilweise verstopft wird bei dem Druck der Masse gegen das Sieb. Weil die festen Teile gewöhnlich ein höheres spezifisches GewichtIn the present method, the mass to be treated is taken from a storage container pressed into the lower part of another container, the diffusion container, the one has an inner perforated base. According to the invention you can in this container Mass rise and lead them to the upper part of the container, freed from the heavy liquid, out of the container. While the mass in the diffusion container rises, one presses one embedded in the upper part of the container lighter liquid through the mass (or lets the liquid trickle through it) in a direction opposite to the direction of movement of the mass, whereby the heavier liquid introduced with the mass and any solid constituents that may have been mixed in, are discharged through the holes in the base plate will. The heavier liquid is then mixed with the following solid parts (e.g. Pulp fibers) in a third container (the fiber separator), in the upper one Part of a sieve is attached, which the heavy liquid must pass before it is diverted away. The fibers are separated from the lower part of the fiber separator solid parts fed back to the diffusion container. In this way one avoids the need for the finer sieve to be used for the complete Excretion of the solid parts from the heavier liquid is necessary, whole or is partially clogged when the mass is pressed against the sieve. Because the fixed parts usually a higher specific gravity

Claims

When you have the liquid, they sink to the bottom in the fiber separator, which is the source of the waste relieved.

The drawing shows schematically an expedient device for implementation of the procedure.

The mass is from the reservoir ι, for example by means of pump or screw arrangements through the pipe 2 into the diffusion b Pressed in the container 3, rises in this container, is freed from the heavier liquid and then conveyed out through the tube 4. The lighter liquid is at the top of the container 3 fed through the pipe 5. A part of the added lighter liquid counteracts the direction of movement of the mass pressed down, whereby the liquid that came in with the mass is pressed through the sieve 6 and through the Tube 7 goes to fiber separator 8, which has a sieve 11 in the upper part.

Some solid parts (cellulose or peat fibers) may follow through the pipe 7 up to the fiber separator 8. This results in an accumulation of fibers in the fiber separator Avoid mixing fibers with fibers continuously or at certain intervals Liquid removed from the separator 8 by means of the pump 9 and the said liquid through the pipes 12 and 2 Diffusion container 3 supplies again.

The sieve 11 consists of sieve cloth or from a finely perforated iron plate, which allows the passage of a significant amount of does not allow fixed parts. The heavier liquid is through the pipe 12 from the Container 8 removed. The amount of liquid is so automatically by means of the valve 13 that regulates the valve when the specific gravity of the liquid is below a certain limit decreases, a smaller amount of liquid passes, while it, if the specific gravity increases, more liquid passes through. The establishment thus requires very little maintenance.

P Λ Ϊ E N T - A N S I' R Ü C H E:P Λ Ϊ E N T - A N S I 'R Ü C H E:

i. Process to make pulp, peat mass and similar masses in one certain work process a liquid of high specific gravity or low temperature by means of a liquid to drive out of low specific weight or high temperature or to heat the mass, which of a storage container in the lower part of another with a perforated inner bottom provided diffusion container is pressed, characterized in that in the diffusion tank (3) the mass rises to the top and here from the specific heavy liquid is released and drained away, while the light or a Liquid at high temperature through the diffusion container (3) from above is pushed or let down in a direction opposite to the rising mass, whereby the specifically heavy or a lower temperature that came in with the mass Liquid and possibly entrained solid parts through the perforated inner base (3) from the diffusion container (3) exit.

2. The method according to claim 1, characterized in that the specific heavy liquid from the solid parts in one with the diffusion tank (3) communicating container '(8) is freed, with the specific heavy liquid in an ascending direction through a sieve (11) in the upper part of the Container Γ8) and solid parts separated out under the sieve (11) to the diffusion container (3).

3. The method according to claim 1, characterized in that the diffusion or heating of the mass is carried out at a pressure equal to or higher than atmospheric pressure.

4. The method according to claim 1, characterized in that the amount of Specifically heavy liquids leaving the diffusion process in the unit of time is selected automatically depending on the specific weight or the temperature of the liquid.

5. Device for performing the method according to claims 1 to 4, characterized in that the line (2) for the supply of the mass to the diffusion container (3) opens into its lower part, while the line (4) for discharging the from heavy liquid-free mass is attached to the upper part of the diffusion container (3), with a sieve bottom in the lower part of the diffusion container (3). (6) and a drain pipe for the heavy liquid flowing off to a fiber separator (8, 11) is arranged, while the pipe (5) for introducing the light liquid opens into the upper part of the diffusion container (3).

1 sheet of drawings.

ISERLlN- PRINTED IN THE