NO139814B

NO139814B - DEVICE FOR COLLECTING, RELEASING AND STORING A CHAIN

Info

Publication number: NO139814B
Application number: NO4660/73A
Authority: NO
Inventors: Gerard Louis Alexandre Ayme
Original assignee: Gerard Louis Alexandre Ayme
Priority date: 1972-12-07
Filing date: 1973-12-06
Publication date: 1979-02-05
Also published as: FR2209710B1; NO139814C; US3917229A; FR2209710A1; GB1431117A; NL7316742A

Description

Fremgangsmåte for trinnvis vasking av fibermateriale, fortrinnsvis sulfittcellulose, Method for stepwise washing of fiber material, preferably sulphite cellulose,

og anordning til utførelse av denne fremgangsmåte. and device for carrying out this method.

Det er brukt å vaske fibermateriale, It is used to wash fiber material,

fortrinnsvis sulfittcellulose, ved å an-bringe den fra en koker avtappede koklut-blandede masse i et åpent kar med silbunn preferably sulphite cellulose, by placing it in an open vessel with a strainer bottom

og ovenfra tilføre vann til karet og av-tappe koklut-blandet vann fra rommet under silbunnen. Det først avtappede vaskevann blir herved sterkt oppblandet med and add water to the vessel from above and drain the cooking liquor-mixed water from the space under the sieve base. The first drained washing water is thereby strongly mixed with it

fibre og tilbakeføres hensiktsmessig til fibers and is appropriately returned to

karets topp. Når det avgående vaskevanns the top of the tub. When the outgoing wash water

innhold av koklut er gått ned til en ønsket content of cooking liquor has decreased to a desired level

verdi, blir karets innhold avtappet gjennom en umiddelbart over silbunnen anbragt ledning. value, the vessel's contents are drained through a line placed immediately above the sieve bottom.

Tilførselen av vaskevann blir ved denne The supply of washing water is through this

arbeidsmåte meget stor, og fibermaterialet working method very large, and the fiber material

blir ujevnt vasket; de øvre lag blir betrak-telig renere enn de andre. Hvis kokluten is unevenly washed; the upper layers become considerably cleaner than the others. If the coke solution

inndampes og brennes, hvilket er ønskelig is evaporated and burned, which is desirable

av hensyn til vannforurensningene, vil en out of consideration for water pollution, one will

stor del av det avtappede vaskevann ha et ; a large part of the drained washing water has a ;

så lite innhold av koklut, at det blir uøko- so little content of cooking liquor, that it becomes uneco-

nomisk å inndampe det, til tross for at dets nomic to vaporize it, despite the fact that its

forurensende virkning i vannrecipienten er polluting effect in the water recipient is

ganske betydelig. quite significantly.

Hensikten med oppfinnelsen er å an-vise en ny fremgangsmåte til vasking av The purpose of the invention is to provide a new method for washing off

fibermateriale, fortrinsvis sulfittcellulose, fibrous material, preferably sulphite cellulose,

som medfører at vaskevann-mengden kan which means that the amount of washing water can

nedsettes og tross dette gir et jevnt og godt is reduced and despite this gives an even and good

vasket produkt. Et annet formål for oppfinnelsen er å muliggjøre at kvantiteten av washed product. Another object of the invention is to enable the quantity of

fra anlegget avgående såkalte nullfibre kan so-called zero fibers departing from the plant can

minskes, hvilket dels nedsetter skadene i is reduced, which partly reduces the damages in

vannavløpet, deles øker fiberutbyttet og denne fordel oppnås uten ytterligere om-kostninger. the water drain, is divided, increases the fiber yield and this benefit is achieved without additional costs.

Oppfinnelsen går således ut på en fremgangsmåte til trinnvis vasking av fibermateriale, fortrinnsvis sulfittcellulose, ved hj elp av vann i et hensiktsmessig åpent kar, hvori vaskevannet tilføres i karets øvre del, og bortvasket koklut bortføres fra karets nedre del, etterat den har passert en silbunn, og hvor den vaskede fibermasse fjernes fra massens øvre del straks ytter-laget er ferdigvasket og i fortsettelsen avskalles i jevne lag fra ytterflaten, og karak-teriseres i det vesentlige ved at væskeover-flaten i karet bringes til å synke i samme takt som renvaskingen og avskallingen av masse skrider frem nedover idet det tilføres vaskevann i jevn høyde med den synkende masseoverflate, idet avskallingen av masse skjer ved hjelp av en bortføringsanordning som følger den synkende overflate. The invention is thus based on a method for step-by-step washing of fiber material, preferably sulphite cellulose, with the help of water in a suitable open vessel, in which the washing water is fed into the upper part of the vessel, and washed away coke liquor is removed from the lower part of the vessel, after it has passed a sieve bottom , and where the washed fiber mass is removed from the upper part of the mass as soon as the outer layer has been washed and is subsequently peeled off in even layers from the outer surface, and characterized essentially by the fact that the liquid surface in the vessel is brought to sink at the same rate as the cleaning and the peeling of pulp progresses downwards as washing water is supplied at the same height as the sinking pulp surface, the peeling of pulp taking place by means of a removal device which follows the sinking surface.

Ytterligere trekk og detaljer ved frem-gangsmåten og anordningen ifølge oppfinnelsen vil fremgå av den etterfølgende beskrivelse i forbindelse med tegningen, som viser en utførelsesform av anordningen ifølge oppfinnelsen. Fig. 1 viser anordningen i vertikalsnitt, mens fig. 2 viser anordningen sett ovenfra. Further features and details of the method and the device according to the invention will appear from the following description in connection with the drawing, which shows an embodiment of the device according to the invention. Fig. 1 shows the device in vertical section, while fig. 2 shows the device seen from above.

Et kar 1, med f. eks. rektangulær bunn-flate, er et lite stykke ovenfor bunnen 2. forsynt med en silbunn 3. Under silbunnen 3 er karet 1 utstyrt med en åpning, fra hvilken en ledning 4 fører til en vann-resipient, f. eks. en elv eller en sjø, og en annen ledning 5 fører via en pumpe 6 til- A vessel 1, with e.g. rectangular bottom surface, a small distance above the bottom 2 is provided with a strainer bottom 3. Under the strainer base 3, the vessel 1 is equipped with an opening, from which a line 4 leads to a water recipient, e.g. a river or a lake, and another line 5 leads via a pump 6 to

bake til karets 1 topp. Begge ledninger 4,5 bake until the 1 top of the tub. Both wires 4.5

er utstyrt med avstengningskran 7. is equipped with shut-off valve 7.

I karet 1 er anbrakt en flåte, i eksem- A raft is placed in vessel 1, in ex-

plet bestående av to pontonger 8 av sylin- spot consisting of two pontoons 8 of cylindrical

drisk tverrsnitt, som ved sine ender er forbundet med kryssende stag 9, således at de holdes innved to motstående sider i karet 1. Begge pontongene 8 er på oversiden forsynt med langsgående løpeskinner 10, bold cross-section, which are connected at their ends with crossing struts 9, so that they are held against two opposite sides in the vessel 1. Both pontoons 8 are provided on the upper side with longitudinal running rails 10,

som bærer en traversvogn 11, på hvilken en løpevogn 12 er anbrakt. Løpevognen 12 which carries a traverse carriage 11, on which a running carriage 12 is placed. The trolley 12

bærer en pumpe 13 med motor 14. Pump- carries a pump 13 with motor 14. Pump-

ens 13 sugerør 15 er utformet slik at det stikker ned under væskeflaten i karet 1. Pumpens 13 trykkside er ved hjelp av en 13's suction pipe 15 is designed so that it protrudes below the liquid surface in the vessel 1. The pressure side of the pump 13 is by means of a

slange 17 forbundet med en hensiktsmessig midt over karet liggende tilslutning, f. eks. ledende til en avvanningsinnretning, som ikke er vist på tegningen. Slangen 17 er med fordel anordnet som en ekspanderbar spiral, slik at den kan følge løpevognens 12 bevegelser. hose 17 connected with a suitable connection lying in the middle of the tub, e.g. leading to a drainage device, which is not shown in the drawing. The hose 17 is advantageously arranged as an expandable spiral, so that it can follow the movements of the running carriage 12.

På pontongenes 8 undersider er anbrakt munnstykker 18, som hensiktsmessig er rettet vannrett inn i karet 1 og er ved hjelp av slanger 19 forbundet med en vas-kevannledning (ikke vist). Nozzles 18 are placed on the undersides of the pontoons 8, which are suitably directed horizontally into the tub 1 and are connected by means of hoses 19 to a washing water line (not shown).

Løpevognen 12 er forbundet med en drivanordnirig (ikke vist), som gir løpe-vognen en frem- og tilbakegående beveg- The running carriage 12 is connected to a drive device (not shown), which gives the running carriage a reciprocating motion

else på traversvognen 11, som er forsynt med en anordning, som ved hver vending av løpevognen 12 flytter traversvognen 11 etc. on the traverse carriage 11, which is equipped with a device that moves the traverse carriage 11 at each turn of the running carriage 12

et trinn mot pontongenes 8 ene ende, og som, når denne ende er nådd, bringer traversvognen 11 til å vende. a step towards one end of the pontoons 8, and which, when this end is reached, causes the traverse carriage 11 to turn.

Anordningens virkemåte er følgende: The device works as follows:

Den koklut-blandede fibermasse fra en The coke liquor-mixed fiber mass from a

koker fylles i karet 1 ovenpå silbunnen 3. Boiler is filled in the vessel 1 on top of the strainer base 3.

Den i massen iblandede koklut renner ned gjennom silbunnen 3, på hvilket det av- The coke liquor mixed in the mass flows down through the sieve base 3, on which the

settes et lag av tykkere fibermasse. Den først avrennende koklut er sterkt oppblan- a layer of thicker fiber mass is placed. The initially draining coke liquor is strongly mixed

det med fibre, spesielt med korte, såkalte nullfibre. Denne fiberblandede koklut av- that with fibres, especially with short, so-called zero fibres. This fibre-mixed coke liquor de-

tappes gjennom ledningen 5 og føres av pumpen 6 tilbake til karets 1 topp. is drained through the line 5 and carried by the pump 6 back to the top of the vessel 1.

Etterat fiberinnholdet i den avrennende kokluten er gått ned til godtagbare verdier, stenges kranen 7 på ledningen 5, og kra- After the fiber content in the draining coke liquor has decreased to acceptable values, the tap 7 on the line 5 is closed, and the

nen 7 på ledningen 4 åpnes. -Ledningen 4 nen 7 on wire 4 is opened. - The wire 4

fører enten til en vannrecipient eller med fordel til en beholder for kok-av-lut, som skal inndampes. Samtidig påfylles vann i karets 1 øvre del gj ennom munnstykkene 18, som holdes på gunstig nivå av de på fibermassens 16 overflate flytende ponton- leads either to a water recipient or, advantageously, to a container for boiling-off lye, which is to be evaporated. At the same time, water is filled in the upper part of the vessel 1 through the nozzles 18, which are kept at a favorable level by the floating pontoons on the surface of the fiber mass 16.

ger 8. Det påtappede vann legger seg oven- 8. The bottled water settles on top of

på den tyngre koklut og fortrenger etter- on the heavier coke liquor and displaces after-

hvert denne nedad. each one downwards.

Etterat innholdet av koklut i de øvre fiberlag ved denne fortrengning er sunket til en ønsket verdi, startes pumpen 13, og den renvaskede masse pumpes til videre behandling. Herunder bringes løpevognen til å bevege seg frem og tilbake på traversvognen 11, samtidig som denne trinnvis beveger seg frem og tilbake på pontongenes 8 løpeskinner 10. Herved vil pumpen 13 After the content of cooking liquor in the upper fiber layers by this displacement has dropped to a desired value, the pump 13 is started, and the cleaned mass is pumped for further processing. Below this, the running carriage is made to move back and forth on the traverse carriage 11, at the same time as this gradually moves back and forth on the pontoons' 8 running rails 10. In this way, the pump 13

bortta lag etter lag av renvasket fiber- remove layer after layer of washed fiber

masse fra karet 1. I den grad massen i karet synker, følger pontongene 8 med, mass from the vessel 1. To the extent that the mass in the vessel sinks, the pontoons 8 follow,

til de tilslutt hviler på silbunnen 3. until they finally rest on the sieve base 3.

Det har vist seg hensiktsmessig som vaskevann i første rekke å anvende fiber- It has been shown to be appropriate as washing water primarily to use fibre-

holdig avløpsvann frå fabrikasjonens øv- containing waste water from the manufacturing practice

rige deler. De heri oppslammede fibre opp-fanges meget effektivt allerede i masse- rich parts. The fibers suspended here are captured very effectively already in mass

lagets øvre deler og tilbakeføres således til det ferdige produkt, hvis innhold av så- the layer's upper parts and is thus returned to the finished product, whose content of so-

kalte nullfibre herved blir spesielt jevnt. Herved har den for fisket og for vannets syreforbruk spesielt skadelige forurensin- called zero fibers thereby become particularly smooth. In this way, it has particularly harmful pollutants for fishing and for the water's acid consumption.

gen med fibre i vannet blitt nedsatt i et hittoil ikke oppnådd omfang. gene with fibers in the water has been reduced to a hittoil not achieved extent.

Ved at den vaskede fibermasse føres In that the washed fiber pulp is fed

bort fra karets 1 topp kontinuerlig, kan vaskevannmengden nedsettes i meget høy grad, og konsentrasjonen av den avtap- away from the tub's 1 top continuously, the amount of washing water can be reduced to a very high degree, and the concentration of the drain

pede koklut holdes så høy at denne kan inndampes i meget stort omfang. Herved minskes også følgelig vannforurensinger, pede koklut is kept so high that this can be evaporated to a very large extent. This also consequently reduces water pollution,

som skyldes utslipning av koklut som ikke egner seg for inndamping. which is due to spillage of cooking liquor that is not suitable for evaporation.

Oppfinnelsen er ikke begrenset til den The invention is not limited thereto

viste og beskrevne utførelsesform, men kan varieres innenfor oppfinnelsens ram- shown and described embodiment, but can be varied within the scope of the invention

me. Således kan f. eks. karet 1 ha rundt tverrsnitt, og pumpens 13 sugerør 15 kan rotere langs karets omkrets, mens pumpen 13 står stille i sentrum. me. Thus, e.g. the vessel 1 has a round cross-section, and the suction pipe 15 of the pump 13 can rotate along the circumference of the vessel, while the pump 13 stands still in the centre.

Claims

1. Procedure for stepwise washing of fiber material, preferably sulphite cellulose

loose, with the help of water in a suitable open vessel, in which the washing water is fed into the upper part of the vessel, and the washed-off cooking liquor is removed from the lower part of the vessel, after it has passed a sieve bottom, and where the washed fiber mass is removed from the upper part of the mass immediately the outer layer is finished washing, and in the continuation is peeled off in even layers from the outer surface, characterized by the fact that the surface of the liquid in the tub (1) is brought to sink at the same rate as the cleaning and peeling of pulp progresses downwards, as washing water is supplied at the same height as the descending mass surface, as the peeling of mass takes place by means of a removal device that follows the descending surface.

2. Method according to claim 1, characterized in that the peeling of the mass takes place by the removal device being moved in the lateral direction along the surface of the fiber mass.

3. Method according to claim 1, characterized in that the peeling of fiber mass takes place by the fiber mass in the outer surface layer being moved laterally towards a laterally stationary removal device which follows the sinking mass surface.

4. Method according to claim 3, characterized in that the movement in the lateral direction takes place with the help of liquid streams.

5. Method according to claim 3, characterized in that the movement in the lateral direction takes place with the help of per se known scraping devices or -organs.

6. Method according to claim 1, characterized in that fiber-containing waste water from other parts of the fabrication is used as washing water, so that its content of fibers is retained in the fiber mass and is continuously carried away together with the washed mass and is evenly distributed in it.

7. Device for carrying out the method according to claims 1-6, in an open vessel with a sieve bottom, characterized in that it consists of a floating surface (8, 9) on the surface of the mass, which carries the removal device for the fiber mass.

8. Device according to claim 7, where the vessel is rectangular, characterized in that the raft consists of two pontoons (8) placed along two opposite sides of the vessel, which are connected at one end by crossing struts (9), and which on their upper sides is equipped with longitudinal rails (10), which carry a traverse carriage (11), on which is placed a running carriage (12), which carries the removal device.

9. Device according to claim 8, characterized in that the running carriage (12) is provided with devices to give it a continuous back and forth movement between the ends of the traverse carriage (11), which is provided with devices, which every time the running carriage turns , the traverse carriage (11) moves a step towards one end of the pontoons, and which, when these ends are reached, reverses the traverse carriage's direction of movement.

10. Device according to claim 8, characterized in that the removal device consists of a pump (13) placed on the trolley (12), whose suction pipe (15) protrudes essentially to the underside of the pontoons (8), and whose pressure side by means of a hose (17) is connected to a device placed opposite the vessel (1) for carrying away the mass.

11. Device according to claim 7, characterized in that the raft (8, 9) on its underside, along the edges of the tub (1), is equipped with inwardly directed nozzles (18) for supplying the washing water.