NO141408B - ANALOGICAL PROCEDURES FOR THE PREPARATION OF NEW THERAPEUTICALLY ACTIVE BENZYLPYRIMIDINES - Google Patents

ANALOGICAL PROCEDURES FOR THE PREPARATION OF NEW THERAPEUTICALLY ACTIVE BENZYLPYRIMIDINES Download PDF

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NO141408B
NO141408B NO754372A NO754372A NO141408B NO 141408 B NO141408 B NO 141408B NO 754372 A NO754372 A NO 754372A NO 754372 A NO754372 A NO 754372A NO 141408 B NO141408 B NO 141408B
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sieve
bodies
shaft
container
stated
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NO754372A
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Norwegian (no)
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NO141408C (en
NO754372L (en
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Ivan Kompis
Gerald Rey-Bellet
Guido Zanetti
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Hoffmann La Roche
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Publication of NO141408C publication Critical patent/NO141408C/en

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D207/00Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D207/02Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D207/30Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members
    • C07D207/32Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
    • C07D207/325Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms with substituted hydrocarbon radicals directly attached to the ring nitrogen atom
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00Carboxylic acid nitriles
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D207/00Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D207/02Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D207/30Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members
    • C07D207/32Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
    • C07D207/325Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms with substituted hydrocarbon radicals directly attached to the ring nitrogen atom
    • C07D207/327Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D211/00Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
    • C07D211/04Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D211/06Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
    • C07D211/36Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D211/56Nitrogen atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D239/00Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/02Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
    • C07D239/24Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D239/28Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
    • C07D239/46Two or more oxygen, sulphur or nitrogen atoms
    • C07D239/48Two nitrogen atoms
    • C07D239/49Two nitrogen atoms with an aralkyl radical, or substituted aralkyl radical, attached in position 5, e.g. trimethoprim

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Cosmetics (AREA)
  • Medicinal Preparation (AREA)

Description

Silanordning ved stående sylindriske Sieve device for standing cylindrical

beholdere for cellulosemasse. containers for cellulose pulp.

Den foreliggende oppfinnelse går ut på en anordning ved en stående sylindrisk beholder innrettet til kontinuerlig aksial gjennemmatning av en suspensjon av fibermateriale og spesielt beregnet for avlutning eller vasking av cellulosemasse efter kokning eller blekning. The present invention is based on a device in the form of a standing cylindrical container designed for continuous axial feed-through of a suspension of fiber material and especially intended for leaching or washing cellulose pulp after boiling or bleaching.

Ved kjente anordninger av denne art skjer avsilingen gjennem plane eller sylindriske faste silplater, som fibersuspensjonen passerer forbi, With known devices of this kind, the screening takes place through flat or cylindrical solid screen plates, which the fiber suspension passes past,

og fra hvis bakside en del av væskeinnholdet fores bort. Det har også and from the back of which part of the liquid content is fed away. It has too

vært foreslått å anbringe lukkede, hule sillegemer bevegelig i be- been proposed to move closed, hollow sieve bodies in the be-

holderen og slutte disses indre til et utvendig avlop for avsilt væske. Således er der f ra • patenthavemes norske patent nr, 93 = 900 kjent en silanordning hvor et antall roterende hule silplater er anordnet ved siden av hverandre i massestrommen og stillet slik at massen passerer Kfr. kl. 55b-5/10 the holder and connect its interior to an external drain for filtered liquid. Thus, from • patenthaveme's Norwegian patent no, 93 = 900, a sieve device is known where a number of rotating hollow sieve plates are arranged next to each other in the mass flow and positioned so that the mass passes Kfr. at 55b-5/10

mellem dem. Om man her vilde fjerne visse stromningshindrende skrape-organer, vilde massens fordeling over beholderens tverrsnitt ved dette arrangement allikevel bli ujevn, dels på grunn av den tversgående aksel som bærer platene, og dels fordi platene på visse steder beveger seg i retning mot og på andre steder i retning med massestrommen. Andre kjente silanordninger har roterende sillegemer i form av plater som dekker hele tverrsnittet av den omsluttende sylindriske beholder, og isåfall må der finnes særskilte anordninger til å spre den f.eks. sentralt tilforte masse ut over silflaten. between them. If one wanted to remove certain flow-obstructing scraping devices, the distribution of the mass over the container's cross-section with this arrangement would still be uneven, partly because of the transverse axle that carries the plates, and partly because the plates in certain places move in the direction towards and on others places in the direction of the mass flow. Other known sieve devices have rotating sieve bodies in the form of plates that cover the entire cross-section of the enclosing cylindrical container, and in that case there must be special devices to spread it, e.g. centrally added mass over the sieve surface.

På den annen side er det kjent, f.eks. fra de svenske patent-skrifter nr. 81.393 og 137.070, i beholdere for satsvis kokning eller vasking av masse å anordne siler for avtapping av koke- eller vaskevæske fra den stillestående masse under behandlingen. Disse siler ut-formes med plane eller krumme silflater som står i beholderens akse-retning, så fylling og tomning av beholderen ikke unodig hindres av dem. Da såvel massen som silene står stille under avsilingen, vil der suksessivt bygge seg opp et tett masseskikt foran silene, men dette blir fjernet i forbindelse med at beholderen i sin helhet tommes efter full-fort kokning eller vasking av massesatsen. On the other hand, it is known, e.g. from the Swedish patent documents no. 81,393 and 137,070, in containers for batch cooking or washing pulp to arrange strainers for draining cooking or washing liquid from the stagnant pulp during treatment. These sieves are designed with flat or curved sieve surfaces that stand in the axis direction of the container, so that filling and emptying of the container is not unnecessarily hindered by them. As both the mass and the sieves stand still during the screening, a dense mass layer will successively build up in front of the sieves, but this is removed in connection with emptying the container in its entirety after full-speed boiling or washing of the mass batch.

Den foreliggende oppfinnelse tar sikte på å rydde av veien de ovennevnte ulemper og komplikasjoner ved de kjente silanordninger som anvendes ved beholdere for aksial gjennercstromning av fibermassesuspen-sjonen og omfatter ett eller flere hule, lukkede sillegemer som er anbragt i suspensjonen og roterer med en i beholderen anbragt hul, sentral, aksel samt via denne står i forbindelse med et utvendig avlop for avsilt væske. Nærmere bestemt tar oppfinnelsen således sikte på ved silanordninger av denne type å gjore det mulig å la avsilingen skje mens massen passerer gjennem og forbi sillegemet, under redusert motstand mot massens bevegelse og uten å forstyrre massestrommens jevne fordeling over forskjellige sektorer av beholdertverrsnittet. The present invention aims to clear the way of the above-mentioned disadvantages and complications of the known sieve devices used in containers for axial cross-flow of the fiber pulp suspension and comprises one or more hollow, closed sieve bodies which are placed in the suspension and rotate with one in the container placed hollow, central, shaft and via this is connected to an external drain for filtered liquid. More specifically, the invention thus aims with screening devices of this type to make it possible to let the screening take place while the mass passes through and past the screening body, with reduced resistance to the movement of the mass and without disturbing the even distribution of the mass flow over different sectors of the container cross-section.

Denne hensikt blir ifolge oppfinnelsen oppnådd ved at sillegemet (eller -legemene) er ringformet og koaksialt med akselen og er sammensatt av to, hovedsakelig vertikale, konsentriske vegger som har liten innbyrdes radial avstand, og hvorav fortrinnsvis begge er perforerte og byr liten motstand mot massesuspensjonens aksiale bevegelse. According to the invention, this purpose is achieved by the sieve body (or bodies) being annular and coaxial with the shaft and composed of two, mainly vertical, concentric walls that have a small mutual radial distance, and of which preferably both are perforated and offer little resistance to the mass suspension axial movement.

Fortrinnsvis anordnes to eller flere sillegemer med forskjellige diametre innbyrdes konsentrisk og i omtrent samme hoyde i beholderen. Herved oppnår man en oket ensartethet av avsilingen i forskjellig radial avstand fra beholderens akse. Onsker man å strekke avsilingen ut over_ en storre aksial lengde av beholderen, ka.n man videre i forskjellig hbyde i denne anbringe to eller flere sett sillegemer, hvert bestående av konsentriske sillegemer med forskjellig store diametre og anbragt stort sett i samme hbyde. Preferably, two or more sieve bodies with different diameters are arranged concentrically with each other and at approximately the same height in the container. This achieves an increased uniformity of the screening at different radial distances from the axis of the container. If one wishes to extend the screening over a larger axial length of the container, two or more sets of sieve bodies can be placed at different heights in this, each consisting of concentric sieve bodies with different diameters and arranged mostly at the same height.

Oppfinnelsen skal nu beskrives nærmere under henvisning til tegningen. Fig. 1 viser vertikalsnitt efter linjen I - I på fig. 3 gjennem den ovre ende av en beholder utrustet med silanordningen ifolge oppfinnelsen. Fig. 2 viser et horisontalt snitt sett nedenfra og tatt efter linjen II - II på fig. 1, og The invention will now be described in more detail with reference to the drawing. Fig. 1 shows a vertical section along the line I - I in fig. 3 through the upper end of a container equipped with the silo device according to the invention. Fig. 2 shows a horizontal section seen from below and taken along the line II - II in fig. 1, and

fig. 3 viser et horisontalt snitt sett ovenfra og tatt efter linjen III - III på fig. 1. fig. 3 shows a horizontal section seen from above and taken along the line III - III in fig. 1.

På tegningen betegner 11 den sylindriske plate eller betongvegg hos en stående beholder som. er bestemt for gjennercforelse av en eller annen slags behandling av en suspensjon av celluloseholdig f iberma.teri-ale, og som f.eks. kan. være en oppsiemningskoker for flis, halm eller annet vegetabilsk materiale eller også et bleketårn for allerede kokt og defibrert cellulosemasse av mer eller mindre tykk konsistens. Beholderen er innrettet for å gjennemstrdmmes av fibermaterialet i retning nedenfra og oppover, enten kontinuerlig eller diskontinuerlig med mer eller mindre store, periodisk tilforte satser, og er i dette byemed forsynt med ikke viste innmatningsanordninger, som er anbragt i bunnen og bringer materialet til å stige vertikalt oppover gjennem beholderen. In the drawing, 11 denotes the cylindrical plate or concrete wall of a standing container which. is intended for carrying out some kind of treatment of a suspension of cellulose-containing fiber material, and which e.g. can. be a screening boiler for chips, straw or other vegetable material or also a bleaching tower for already cooked and defibrated cellulose pulp of a more or less thick consistency. The container is designed to flow through the fiber material in the direction from below upwards, either continuously or discontinuously with more or less large, periodically added rates, and is in this case provided with feeding devices, not shown, which are placed at the bottom and cause the material to rise vertically upwards through the container.

Ved beholderens ovre ende, som dekkes av et tak 13, er der anordnet en utmatningsanordning, som forer materia.let ut gjennem et sideavlbp 15. Denne utmatningsanordning kan utgjbres av en skraper sammensatt av skråttstillede plater 17 som bæres av radiale armer 19 festet på en roterende vertikal aksel 21. Denne aksel er anbragt sentralt i beholderen og bærer ved sin ovre ende, som går gjennem taket 13, et snekke-hjul 23 som inngår i en utveksling til drift av akselen. Den nedre ende av akselen 21, som strekker seg et stykke nedenfor skraperen, hviler i et lager 25 båret av et armkors, hvis armer 27 er festet i beholderveggen 11. Beholderen ka.n eventuelt stå under overtrykk, som f.eks. opprettholdes ved hjelp av trykkluft tilfort gjennem en ledning 28. At the upper end of the container, which is covered by a roof 13, there is arranged a discharge device, which feeds the material out through a side outlet 15. This discharge device can be produced by a scraper composed of inclined plates 17 which are carried by radial arms 19 fixed on a rotating vertical shaft 21. This shaft is placed centrally in the container and carries at its upper end, which passes through the roof 13, a worm wheel 23 which is part of a gear for operating the shaft. The lower end of the shaft 21, which extends a little below the scraper, rests in a bearing 25 carried by an arm cross, whose arms 27 are fixed in the container wall 11. The container can possibly be under overpressure, such as e.g. maintained by means of compressed air supplied through a line 28.

Silanordningen ifolge oppfinnelsen utgjbres i den utfbrelsesform som er vist på tegningen, hovedsakelig av to ringformede, forskjellig store sillegemer 29 og 31, som ved hjelp av radiale bærearmer 33,-35, 37 og et nav 40'er festet til akselen 21 i slike stillinger at de er konsentriske med hverandre og med beholderveggen 11 og også befinner seg i stort sett samme hbyde. Hvertsillegeme er sammensatt av to stort sett sylindriske silplater 41, 43, som har noe forskjellig diameter og er innsatt i hverandre og forbundet ved over- og underkanten. Avstanden mellem silplatene er betydelig mindre enn deres aksiale lengde og er bare betinget av at hulrommet mellem dem skal tillate noenlunde fri stromning av avsilt væske, samt av hensynet til mekanisk formfasthet eller stivhet. I radialt snitt danner således sillegemet en i vertikal retning langstrakt figur, som har spisse eller avrundede ender for å yte minst mulig motstand mot massens forbistromning. Silplatenes kanter kan oventil og nedentil være knekket inn mot hverandre og forbundet ved sveising som vist på fig. 1, men de kan også være jevnt krummet eller vinkelknekket på midten, så sillegemets tverrsnitt blir linseformet resp. spisst rombisk. I samtlige av disse tilfeller blir silflaten stort sett vertikal. Eventuelt kan perforeringshullene ute-lates i nærheten av sillegemets tilspissede over- og underkanter, Jfolge en alternativ utforelse kan silflatene gjores helt sylindriske og sveis-es fast til særskilte ringer, som har trekantet eller halvrundt profil eller på annen måte er utformet for at massestrommen skal bli delt av dem og flyte frem på begge sider av sillegemet med minst mulig motstand. Umiddelbart utenfor navet 40 er der anbragt en ytterligere silplate 45 av omtrent samme utforelse som silplaten 41, men med meget mindre diameter. Sillegemene 29, 31 ligger i slike radiale avstander fra beholderens akselinje at avsilingen gjennem de beskrevne fem silplater, altså silplatene 41, 43 på hvert av sillegemene 29, 31 samt silplaten 45, blir noenlunde jevnt fordelt i forhold til de respektive silflåters størrelse. Dette betyr i almindelighet at de radiale avstander mellem nærliggende silflater blir innbyrdes like, mens avstanden mellem den ytterste silflate og beholderveggen blir halvparten så stor. The strainer arrangement according to the invention is produced in the embodiment shown in the drawing, mainly of two ring-shaped, different-sized strainer bodies 29 and 31, which are attached to the shaft 21 in such positions by means of radial support arms 33,-35, 37 and a hub 40 that they are concentric with each other and with the container wall 11 and are also located at roughly the same height. Each sieve body is composed of two largely cylindrical sieve plates 41, 43, which have slightly different diameters and are inserted into each other and connected at the upper and lower edges. The distance between the sieve plates is significantly smaller than their axial length and is only conditioned by the cavity between them allowing a relatively free flow of filtered liquid, as well as by consideration of mechanical dimensional stability or stiffness. In radial section, the sieve body thus forms an elongated figure in the vertical direction, which has pointed or rounded ends to offer the least possible resistance to the flow of the mass. The edges of the strainer plates can be bent towards each other at the top and bottom and connected by welding as shown in fig. 1, but they can also be evenly curved or bent at an angle in the middle, so that the cross-section of the sieve body becomes lens-shaped or pointed rhombic. In all of these cases, the sieve surface is mostly vertical. Optionally, the perforation holes can be omitted near the pointed upper and lower edges of the sieve body. According to an alternative embodiment, the sieve surfaces can be made completely cylindrical and welded to special rings, which have a triangular or semi-circular profile or are otherwise designed so that the mass flow will be split by them and float forward on both sides of the sill body with the least possible resistance. Immediately outside the hub 40 is placed a further sieve plate 45 of approximately the same design as the sieve plate 41, but with a much smaller diameter. The sieve bodies 29, 31 are at such radial distances from the axis line of the container that the screening through the described five sieve plates, i.e. the sieve plates 41, 43 on each of the sieve bodies 29, 31 as well as the sieve plate 45, is more or less evenly distributed in relation to the size of the respective sieve rafts. This generally means that the radial distances between adjacent sieve surfaces are mutually equal, while the distance between the outermost sieve surface and the container wall is half as large.

Hulrommene 47, 49 i sillegemene 29, 31 og hulrommet 51 innenfor silplaten 45 står i fellesskap i forbindelse med et hulrom 53 i en 33 av bærearmene0 Dette hulrom munner ut i en utboring 55 i den nedre ende av akselen 21, og denne utboring kommuniserer via lageret 25 med et hulrom 57 i en av armene 27 hos det bærende armkors.. Utenfor beholderveggen 11 er der til dette hulrom sluttet en avløpsledning 59 for den væske som avsiles gjennem de nevnte silflater. The cavities 47, 49 in the sieve bodies 29, 31 and the cavity 51 within the sieve plate 45 are in common connection with a cavity 53 in one 33 of the support arms0 This cavity opens into a bore 55 in the lower end of the shaft 21, and this bore communicates via the bearing 25 with a cavity 57 in one of the arms 27 of the supporting arm cross.. Outside the container wall 11, there is connected to this cavity a drainage line 59 for the liquid which is filtered through the said sieve surfaces.

For det tilfelle at silanordningen bare skal tjene til å skille en del av væskeinnholdet i fibersuspensjonen fra det faste materiale, In the event that the silane device should only serve to separate part of the liquid content in the fiber suspension from the solid material,

er anordningen fullt komplett og funksjonsdyktig slik som den hittil er beskrevet. Skal derimot avsiling skje uten inntykning av massens konsistens og i forbindelse med en utskiftning av væsker, f.eks. for partiell erstatning av en behandlingsvæske med en vaskevæske, kreves the device is fully complete and functional as described so far. On the other hand, should screening take place without thickening the consistency of the mass and in connection with a replacement of liquids, e.g. for partial replacement of a treatment liquid with a washing liquid, is required

dessuten anordninger for tilfbrsel av væske, og slike vil nu bli beskrevet. moreover, devices for supplying liquid, and such will now be described.

Akselen 21 har en utboring 61 som går ut fra dens ovre ende cg strekker seg over en stbrre del av dens lengde, og som ikke står i forbindelse med utboringen 55 og hulrommet 53, men med et hulrom 63 i en annen 37 av bærearmene. Denne bærearm er på oversiden forsynt med en rekke utstrbmningshull 65, som er anbragt omtrent midt mellem de forskjellige silflater og også utenfor sillegemet 31. Utboringen 61 fortsetter oventil i et medroterende ror 62, som er innsatt i en videre utboring 64 i akselen, og hvis ovre ende ved hjelp av en tetningsboks 67 står i forbindelse med en tillopsledning 69 for vaskevæske. Den væske som pumpes inn gjennem denne ledning, blir gjennem forekommende utstrbmningshull i den roterende bærearm 37 spredt ut over beholderens tverrsnitt på det nivå hvor silflatene befinner seg, og på den måte som er antydet med bbyede piler på fig. 1, og fortrenger derved behandlingsvæsken, som på den måte som er beskrevet ovenfor, strommer bort gjennem silflatene og avlopet 59. Eventuelt kan der også anordnes utstrcmnings-hull i bærearmen 35. Som vist på fig. 2, oker antallet av utstromnings-hull i de forskjellige grupper med oket avstand fra akselen. Hensikten med dette er å fordele det tilforte vaskevann så jevnt som mulig over beholderens tverrsnitt. Man får medden beskrevne anordning en stromning av tilfort vaskevæske og fortrengt behandlingsvæske i stort sett horisontale retninger og altså på tvers av fibermaterialets vertikalt oppadgående fremmatningsretning, hvorved materialets bevegelse bare blir ubetydelig påvirket. The shaft 21 has a bore 61 which goes out from its upper end and extends over a greater part of its length, and which is not in connection with the bore 55 and the cavity 53, but with a cavity 63 in another 37 of the support arms. This support arm is provided on the upper side with a series of protrusion holes 65, which are placed approximately in the middle between the various sieve surfaces and also outside the sieve body 31. The bore 61 continues upwards in a co-rotating rudder 62, which is inserted in a further bore 64 in the shaft, and if upper end by means of a sealing box 67 is in connection with an inlet line 69 for washing liquid. The liquid that is pumped in through this line is spread out through the discharge holes in the rotating support arm 37 over the cross-section of the container at the level where the sieve surfaces are located, and in the manner indicated by curved arrows in fig. 1, and thereby displaces the treatment liquid, which, in the manner described above, flows away through the sieve surfaces and the drain 59. Optionally, there can also be arranged expansion holes in the support arm 35. As shown in fig. 2, the number of outflow holes in the different groups increases with increasing distance from the axle. The purpose of this is to distribute the added washing water as evenly as possible over the container's cross-section. With the described device, a flow of added washing liquid and displaced treatment liquid is obtained in largely horizontal directions and thus across the fiber material's vertically upward feed direction, whereby the movement of the material is only slightly affected.

Et stykke ovenfor sillegemene 29, 31 er der på akselen 21 fast-gjort en radialtrettet arm 71. Denne har et indre hulrom 73 som står i forbindelse med den videre akselutboring 64 som ligger utenfor roret 62, og som i sin tur ved hjelp av en tetningsboks 75 står i forbindelse med en annen tillopsledning 77 for vaskevæske. Armen 71 er forsynt med et antall utstrbmningshull 79, der som vist på fig. 3 ligger stadig tettere på lengre avstand fra aksen, slik at vaskevæsken blir fordelt i forhold til massetverrsnittet. Når vaskevæsken slippes frem gjennem led-ningen 77, ledes den til de nettop nevnte utstrbmningshull 79, og når armen 71 svinges ved hjelp av akselen 21, blir vaskevæsken spredt i jevn fordeling over beholdertverrsnittet. Vaskevæsken gjennemstrbmmer derefter massen i retning nedover, altså i motstrbm til den, og driver behandlingsvæsken foran seg til silflatene og derfra til utlbpet 59. A bit above the sill bodies 29, 31, a radially aligned arm 71 is attached to the shaft 21. This has an inner cavity 73 which is in connection with the further shaft bore 64 which lies outside the rudder 62, and which in turn by means of a sealing box 75 is connected to another supply line 77 for washing liquid. The arm 71 is provided with a number of discharge holes 79, where as shown in fig. 3 is increasingly denser at a greater distance from the axis, so that the washing liquid is distributed in relation to the mass cross-section. When the washing liquid is released through the line 77, it is led to the just-mentioned discharge holes 79, and when the arm 71 is swung by means of the shaft 21, the washing liquid is spread in an even distribution over the container cross-section. The washing liquid then flows through the mass in a downward direction, i.e. in a counter current to it, and drives the treatment liquid in front of it to the sieve surfaces and from there to the outlet 59.

Istedenfor en eneste arm 71 kan man ved behov anordne flere armer i jevn fordeling rundt omkretsen. Vaskevæsken kan slippes frem alternativt gjennem den ene eller den annen av ledningene .69 og 77, men også samtidig gjennem begge om det viser seg hensiktsmessig. Man kan deg i de fleste tilfeller klare seg med det ene eller det annet av ,disse to adskilte systemer for tilforsel av vaskevæske. Instead of a single arm 71, if necessary, several arms can be arranged in an even distribution around the circumference. The washing liquid can alternatively be released through one or the other of the lines .69 and 77, but also simultaneously through both if it proves appropriate. In most cases, you can get by with one or the other of these two separate systems for supplying washing liquid.

De ovenfor beskrevne bærearmer 33, 35 og 37, den separate vaskevann-tilforselsarm 71 og armene i armkorset 27 er utfort stromlinjeformet i tverrsnitt, som vist ved snittene a-a, b-b, c-c og d-d til venstre på The above-described support arms 33, 35 and 37, the separate washing water supply arm 71 and the arms in the arm cross 27 are elongated in a streamlined cross-section, as shown by the sections a-a, b-b, c-c and d-d on the left of

fig. 1. Med hensyn til de med den roterende aksel forbundne armer lig- fig. 1. With regard to the arms connected to the rotating shaft lig-

ger tverrsnittet skrått mot vertikallinjen, og skråstillingen bor velges under hensyntagen til såvel rotasjonshastigheten som massens frem-ma tningshastigb et for at armene skal by minst mulig motstand mot massens strcmning forbi dem. makes the cross-section oblique to the vertical line, and the oblique position should be chosen taking into account both the rotation speed and the mass's forward speed so that the arms offer the least possible resistance to the mass's flow past them.

Innenfor rammen av patentkravene kan den ovenfor beskrevne ut- Within the scope of the patent claims, the above-described out-

forelse naturligvis modifiseres med hensyn til detaljer. Således kan f.eks. den avsilte væske ledes bort ad andre veier enn den viste, f.eks. of course is modified with regard to details. Thus, e.g. the desilted liquid is led away in other ways than the one shown, e.g.

oppover gjennem akselen. Når der forekommer flere i forskjellig hoyde plaserte sett av sillegemer, kan der også anordnes organer for til- up through the axle. When there are several sets of sieve bodies placed at different heights, organs can also be arranged for

forsel av vaskevæske mellem disse sett. Videre kan man for rengjoring av silplatene anordne stasjonære sjabre eller lignende, f.eks. distribution of washing liquid between these sets. Furthermore, stationary scrapers or the like can be arranged for cleaning the sieve plates, e.g.

vertikaltstående fjærende stålbla.der festet på armkorsets armer. vertical sprung steel blades attached to the arms of the crossbow.

Claims (4)

1. Anordning ved en stående, sylindrisk beholder innrettet for aksial gjennemmatning av en suspensjon av fibermateriale og spesielt be-1. Device for an upright, cylindrical container designed for axial feed-through of a suspension of fiber material and especially be- regnet for avlutning eller vasking av cellulosemasse efter kokning eller blekning, omfattende ett eller flere hule, lukkede sillegemer som er anbragt i suspensjonen og roterer med en i beholderen, anordnet hul, sentral aksel samt via denne står i forbindelse med et utvendig avlop for avsilt væske, karakterisert ved at sillegemet (31 eller -legemene 29, 31) er ringformet og koaksialt med akselen (21) og er sammensatt av to, hovedsakelig vertikale, konsentriske vegger (41, 43) som har liten innbyrdes radial avstand, og hvorav fortrinnsvis begge er perforerte og byr liten motstand mot massesuspensjonens aksiale bevegelse. calculated for desalination or washing of cellulose pulp after boiling or bleaching, comprising one or more hollow, closed sieve bodies which are placed in the suspension and rotate with a hollow, central shaft arranged in the container and via this is connected to an external drain for desilted liquid , characterized in that the sieve body (31 or bodies 29, 31) is annular and coaxial with the shaft (21) and is composed of two, mainly vertical, concentric walls (41, 43) which have a small mutual radial distance, and of which preferably both are perforated and offer little resistance to the axial movement of the mass suspension. 2. Anordning som angitt i"krav 1, karakterisert ved at to eller flere dreibart anbragte sillegemer (29, 31) med forskjellig diameter er anordnet innbyrdes konsentrisk og i omtrent samme hoyde i beholderen. 2. Device as stated in claim 1, characterized in that two or more rotatably arranged sieve bodies (29, 31) of different diameter are arranged concentrically with each other and at approximately the same height in the container. 3. Anordning som angitt i krav 2, karakterisert ved- at to eller flere sett av dreibart anbra.gte konsentriske sillegemer er anbragt i forskjellig hoyde i beholderen. 3. Device as stated in claim 2, characterized in that two or more sets of rotatably applied concentric sieve bodies are placed at different heights in the container. 4. Anordning som angitt i kra.v 1, 2 eller 3, karakterisert ved at sillegemet eller -legemene ved hjelp av radiale bærearmer (33, 35, 37) er festet til den med beholderen konsentriske aksel (21), og at foruten akselen i det minste én av bærearmene (33) er hul for å danne en a.vlopskanal (53, 55) som setter det indre av sillegemet eller -legemene i forbindelse med avlbpet (59)o 5« Anordning som angitt i krav 4, karakterisert ved at akselen (21) bæres av et armkors festet til beholderens vegg, og at akselens hulrom (55) står i forbindelse med et hulrom i en av armkorsets armer (27). 6„ Anordning som angitt i et av de foregående krav, karakterisert ved at organer (37 og/eller 71) for tilforsel av væske, fortrinnsvis vaskevæske, er innrettet til å rotere sammen med sillegemet o 7. Anordning som angitt i krav 6, karakterisert ved at en radialtgående hul arm (71) med utlbpsåpninger for vaskevæske er festet til akselen (21) ovenfor sillegemet eller -legemene for, som i og for seg kjent, å muliggjore hovedsakelig aksialtrettet vask av massen i motstrom. 8. Anordning som angitt i krav 6, karakterisert ved at utlopsåpninger (65) for vaskevæske er anbragt på en eller flere (37 og eventuelt 35) av de bærearmer som tjener til å bære sillegemet eller -legemene, idet vedkommende arm eller armer er hule og står i forbindelse med en tilløpskanal (61) i akselen, hvorved der muliggjøres vasking med væske som gjennemstrbmmer fiberma.terialet i stort sett radial retning på tvers av dettes fremmatningsretning.4. Device as specified in claim 1, 2 or 3, characterized in that the seal body or bodies are attached to the shaft (21) concentric with the container by means of radial support arms (33, 35, 37), and that in addition to the shaft at least one of the support arms (33) is hollow to form an outlet channel (53, 55) which places the interior of the sieve body or bodies in connection with the outlet (59) o 5" Device as stated in claim 4, characterized in that the shaft (21) is carried by a cross-arm fixed to the wall of the container, and that the shaft's cavity (55) is in connection with a cavity in one of the arms of the cross-arm (27). 6„ Device as stated in one of the preceding claims, characterized in that organs (37 and/or 71) for supplying liquid, preferably washing liquid, are arranged to rotate together with the sieve body o 7. Device as stated in claim 6, characterized in that a radially extending hollow arm (71) with outlet openings for washing liquid is attached to the shaft (21) above the sieve body or bodies in order, as is known per se, to enable mainly axially directed washing of the mass in countercurrent. 8. Device as stated in claim 6, characterized in that outlet openings (65) for washing liquid are arranged on one or more (37 and possibly 35) of the support arms which serve to support the sieve body or bodies, the respective arm or arms being hollow and is in connection with an inlet channel (61) in the shaft, thereby enabling washing with liquid which passes through the fiber material in a largely radial direction across its direction of feed.
NO754372A 1974-12-24 1975-12-23 ANALOGY PROCEDURE FOR THE PREPARATION OF NEW THERAPEUTIC ACTIVE BENZYLPYRIMIDINES NO141408C (en)

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HU174324B (en) 1979-12-28
ZA756964B (en) 1976-10-27
JPS5191273A (en) 1976-08-10
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NO141408C (en) 1980-03-05
AU500102B2 (en) 1979-05-10
SU612629A3 (en) 1978-06-25
SE417607B (en) 1981-03-30
ES443790A1 (en) 1977-12-16
CH617191A5 (en) 1980-05-14
CH605828A5 (en) 1978-10-13
IL48416A0 (en) 1976-01-30
CU34406A (en) 1978-09-08
CA1059127A (en) 1979-07-24
AU8643375A (en) 1977-05-12
FR2295750A1 (en) 1976-07-23
PL101046B1 (en) 1978-11-30
BE836996A (en) 1976-06-23
SE7514642L (en) 1976-06-28
BR7508534A (en) 1976-12-21
DK137797C (en) 1978-10-16
LU73971A1 (en) 1977-07-01
FI753312A (en) 1976-06-25
AT344704B (en) 1978-08-10
ATA975975A (en) 1977-12-15
FR2295750B1 (en) 1980-06-20
IL48416A (en) 1980-02-29
NO754372L (en) 1976-06-25
NL7514269A (en) 1976-06-28
DE2558150A1 (en) 1976-07-01
DD123603A5 (en) 1977-01-05
PH12314A (en) 1979-01-16
DK137797B (en) 1978-05-08
GB1492140A (en) 1977-11-16

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