DE1807627A1 - Method and device for finely dividing pulp, preferably cellulose pulp, in connection with the bleaching process of the pulp by means of a gaseous bleaching agent - Google Patents

Description

Method and device for fine cutting

of pulp «preferably cellulose pulp, in connection

with the lead-in process of the pulp by means of a gaseous one

Bleach

The invention relates to methods and devices sum fine cutting of pulp »preferably cellulose pulp * in Connection with the pulp leaching process by means of a gaseous Bleach in an upright bleach

When bleaching cellulose pulp or pulp by means of a gaseous bleaching agents such as oxygen should be used Leading process even with a high pulp consistency. a liquor ratio of 10 to

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ßAD ORIGINAL

preferably I? j bi » yc $ and iMlß« äond »r« «about vop 2® $ wia filter h © Sw> n SSrualc diireligifUlirt mrteir · ä§s designing the pulp®» that is necessary «to« ine * »©! © toi Kooslstons m received, and the EiBl®ifc®u of the pulp In <fer

port Uruck ^ r ^ ibt «in <$ pulp» it dl «» ur Ptirohfühnrng ®m - DlitieSivorgÄiss uiwr »ist. tmiit the BialQhv @ s ^ ^ amg AETE li vmä glsieli "performed"# n? tain * lsi $ "ünerllili @ li _e GK3 pulling

thinks »In dein si® strong

Di® invention fosEwscki * if »connection dl« Pulp® In «inurs eotohen Su®taad zu üt ^ rfütoep that al • fast and smooth (mhlulzht %; ®rd®n lcaim..

the Erfiadimg is dl @@ in wesentlichen'dadurch

di® Pulp © in ά®η ® ^ ®r®is Äil ®1b®8

is initiated »in deis ®isri gasga-filled tree is maintained, uf & d on-their fefeg through üim% n , gaa, g @ - filled building from s8®r ÄRduBg d®r supply line to the surface of the pulp, which is gradually forming in the Sleichtana · Pillar in @ in®r eu der (ins w @ ®®atllcten s®akr @ ohteß) Direction of fall of the Pulp® in the gasg®füll @ n Bmnm essentially qu®rv®r running direction ®in®r ßi @ oh » nia @ ^ sn ^ arteitasig Ib ~ a®r is subjected to »dafi ®i® finely eertellt or 'dissolved and / or distributed in this area

This srmohenisels® B®nrlmitiMg der Fnlpe dft @ «la erl ^ MiGtor BdI d®r py.lp« in several times upwards wid Britein mtvömti, h®w @ r @r on the

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SAD ORtGJNAL

"""'!"!'! :! ! 111! '"' I y ¹ ·"->"flllllill !! ¹ ·: ·! ·

flttohe of the pulp column * ur BUh *! count. Ια this fur · can the pulp, in a horUenfcaltn stone contemplate ^ eunBofest «A spiral shape, then« an essentially straight line and finally execute a whirl "" · gun ". The processing the pulp knows during the * preferably continuous bin A «« gaseous bleach should be used.

The method according to the invention should mainly be carried out in bleaching holders or doors in which the space filled under an excess pressure of about 5 to 20 kilopond / om * preferably about 6 to 15 kilopond / cm and in particular about 8 to 10 kilopond / cm ² , it can also be used advantageously when the gas-filled tree in such a forest is under atmospheric pressure or there is negative pressure in it.

erfindungsgesRäSe device for carrying out a sol * The process essentially involves standing upright * the (vertical or essentially vertical) bleaching tower with at least one feed line for pulp and little stone of a supply line for a gaseous bleach on its upper part as well as at least one processing * part that is in the path of the mouth of the supply line pulp falling into the lead tunnel arranged 1st «essentially Qiaev to the direction of fall of the Make a rapid movement of the pulp, and while it is moving, distribute and atomize the falling pulp know about between the gaseous bleach and the in to create favorable reactionary conditions for the pulp introduced into the bleaching tuna

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BATH ORIGINAL

For example Aueftilirui & geforaen äer invention herds 2 « the following is explained in more detail with reference to the collision »In

Fig. 1 a vertical section of a ^ tsehlossetien, right standing Bleiohtunnee selgtt

FIG. 2 also divides the upper part of such a sleiohtuxtte

Fie · 3 to 6 seigtn Im · 1η2 · 1η * ι & v «rsohi« d «n · tor erfIralusngagsraäS «s

The one here dftrg © «shared Bleiehurro 1 let a ttfel & oliex · Tuns nit

naoh unten "the one on his upper part *

eteohloesene supply line 2 comprises for pulp and a AuelaJleitung 3 for treated pulp at its lower part · AuC lower Abeoimltt the tower Verdttnnungsdilsen 4 and a propeller stirrer 5 are angeordnfit in sr SiOH known catfish, so that the Koneistens the pulp can be herabgesetst gleiotaäSig "In the path of the fall from the duct 2 'the pulp is part arranged 6 mim finely dividing * which is preferably formed as Sobleudereeheihe 7 with a / ins & hl upwardly projecting ribs or ridges 8 is · This! style 6 is supported by a shaft 9, "in a carrier XO is stored and duroh a motor Sl is versetst in Drslning. The outer diameter of the disc 7 and the ribs 8 can be about 1 to 5 times, preventively S to 4 times and in particular etttt 3 ntxl as large as the diameter of the pulp inlet in the tower. The height of the ribs 8 is usually S up to 3 cm "and under certain conditions ribs with a height of 1 to 2 * $ om sweekanMdig". The ribs 8 also come at an angle deviating from 90 * with the plane of the disk 7 form, so that when the disc is running

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SAD ORKÄJNAL

the upper edges of the ribs seen in the rotation direction run forward or oaoho the lower edges. As shown in the figures and it can be seen that the ribs either extend essentially radially (ribs 8 in pig ”3) or in a direction deviating from the radial direction (ribs 12 in wing” 4). In this In the case, the hips are arranged between two radial planes and the structure is preferably designed in such a way that only one such group of hips is present, too possible to omit this disc 7 and instead the ribs 8. a hub on the shaft 9 see below »whose diameter is small in relation to the south of the disk. In an embodiment of this type, 2, 1 or more groups of such ribs or webs can be arranged in a vertical direction at suitable intervals on the shaft 9, m pig. 2 1st with 13 denotes a supply line for a gaseous bleaching agent "of which several can be provided"

In the embodiment shown in FIGS. 5 and 6 are the hips through circumferential plugs 14 or 15 and Io replaces · IXLe pegs 14 are in the direction of movement of the falling pulp is arranged essentially in axial direction and they preferably cooperate with fixed pegs 17, which are also essentially are arranged axially. BIe tenons 15 »which are practically transverse to the shaft 9 can run essentially axially sum lead tower at the same or different distances Helical lines * be arranged and the fixed Pins 18 "which interact with the pins 15" also run essentially transversely to the shaft 9 · Xn of FIG The embodiment fora shown in FIG. 5 carries a disk 19 the tenons 14.

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ORIGINAL

an afcgoMndssrt *** ÄuefUhruiigsfona kMm & u di® 14 and 17 in the w * s®istli®! sefi radial b®zligli © ra de? order the pulp falling into the lead tower (B »arrange1; -'-« eiit ·

ΪΆ.9 device works as follows ι

the supply line S becomes Fulpe in the 0bes «i®i3. of

I initiated and wMhmrad him®- 'mi'zhl & iii this line a Midet die Pulp® ttlwin Kl? Kst & mti dem on ά® :? iimide of the

The pulp falls Astnn n & ch waten imä wä ^^ snd nt® with the umlaufeiidtnBippmi wiäl / Mei * cones in B @ ^ li ^ i »ig tidttf is divided up to Wälireiii di @ a © @ V @ r ^^ $ t @ Mira » Issued pulp in ventilation on th sucked _ff where ssan the tmBhsivhtk

Via the jseeasite iime ^ tyAemutmlltBtlMtm dan ^ ismes he »holds« WSIirttiid eiüh di a @ s feil sum f @ fn «3 • or it asseli for ei» @ Ifentiliitiosimfirlciäii filled RaiMi in the Olbex 'part »ti *« latioursmis ice cream » itot "iei® dureh the arrows in Figure 2 · 1st" ltanife the teabeiehtigtü effect u @ r felne "rr" ioht be marked, the 'mile 9 ßtui with eioer Dreteahl about S.00 to $ 000 tlndrelsuiieeii / ISiniiteAMesm aögiimi A g ^ eigr ^ t * DreMatil li @ gt tei about tind ndaffiaXerwei © ® should ei® to%>

de »eiwiHneehten effect between 20 © rock 2000 minute

The intended teolinisalxe effect k & rm dung ae! Imi «s * eolehtr! Parts sum fein®» vttffdesi * which the Pulp® wagend itis * ® free üsl.1.® »i» beaubeiteno even this effect will be turned over »the isemde tmtm m * tm®ht @ d @ rs @ lsx € s in 4s.r case

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BATH ORIGINAL

direction of pulp · li * gen and dit · «edit * and« icto euren «ine Konbintert · processing d # r pulp · length dertn Pallrtohtun« and / od «r« iihräg and / 9d «r qu» r sis this direction » wobti Is dleätn Tall «dl · combined · Btaritoltung in mwtgstmm wtmt am * otwn uigogeteiMin B * arl» ltungerlohtuogen srfoletn eel It «· The upper and / or lower hindrances of the ribs I canneR ge wavy or in other similar catfish trained β 1η

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Claims (1)

Ancestors of fine pulp distribution " Zeliatoffpulp, in connection with the "bleeding process of the pulp" means of a gasfunolgjefi Dleiohmitfcele iss, an upright Dleiohtun " _{e separated} by the fact that the pulp is" fed "into the upper part of the " ^ srsvac "in which a gas-filled space is maintained and on their way, "Suren these gas-filled space down below the surface of the" I in Bleiohtuna gradually auebildenden Pulpesäule in ®in © r su of Fallriehtung (Im w @ vertical ®enfeliohen) d®r pulp in gaegsfüllten Hardly substantially transverse Hiohtung is subjected to mechanical processing in such a way that the fulpe is finely processed or dissolved and / or distributed in this space. Method according to claim 1, characterized in that the pulp is subjected to such intense processing by the laser that "in a considerable amount of pulp within the gas" filled space once or tube-filled isaoh above and below, before it penetrates the surface. R eich in Tun "gradually developing PulpesKul" sur Buhe Method according to claim 1 or 2, characterized in that it is » that the pulp "seen in a horizontal plane, sunäohst helical lines" - bsw. spiralenfunaig »then int essential in a straight line and finally moved in a whirling motion. 909825 / U53 BATH ORIGINAL Ancestors naah cine »of claims 1 Ms 2, dadurofc g» - kennseelohnet "dad" he pulp worked in "! net" room becomes, in de © about 9 to 80 Kllopond / cm, preferably about 6 to 1 «j Κϋοροηβ / οΐη and especially about θ to IO Küoponä / om are above the atmospheric pressure * the pressure is maintained. The method »aoh any one of claims 1 to% gekennxelohtiat characterized in that the pulp in a space fcserbeitet MlTu ₉ in which an under-lying your Atiaosphärendraek Druok 6c Vez ^ go according to one of Claims 1 to 5 "characterized in that the pulp is processed" while a gaseous bleaching agent is preferably supplied continuously. ?. Apparatus by carrying out the method according to claims 1 to 6, characterized by an upright (vertical or essentially vertical) bending tower (1) with at least one supply line (2) for pulp and at least one supply line {ij}) for a gaseous bleaching agent its upper part and through at least one processing part (S), that in the path of the pulp coming from the mouth of the feed line (2) and falling down into the bleaching tower there is a buckled movement essentially across the fall direction of the pulp run and. While it was being pelted, the falling pulp came to break up and distribute it, in order to create favorable heat conditions between the gaseous bleaching agent and the palpation introduced into the bleaching tower. 90982 5/14 5 3 ■ - ORIGINAL BATHROOM .8th. Device according to claim 7, characterized in that the processing part {6} arranged in the path of the pulp falling in the bleaching tower (1) has a? - Speed of I 00-3000 Utedrehungen / minute and when a higher "with 200 to 2000 revolutions / minute," particularly about 1500 revolutions / minute to perform a © Drehfeewegung possible preferably " 9 “Device according to claims 7 and _9, characterized in that the processing style (β) essentially borrowed radially Siigao ^ dnet® Hippen (8) or In ®ln®v (12), which are arranged between two radial Bfc®n @ n ang @ « _s whereby the arrangement is designed in such a way that siur such a group of hips or that 2, 5 or more such groups are spaced apart in a vertical direction voK @ arranged one inside the other 1 I » da® the processing part (6) has a number of & pf @ n (15), di @ im w © s®ntlicli®o qu®! » Also screw the Well® (9) * preferably essentially axially along the bleaching tower (1) at the same or different distances Ralenfönnig are arranged and preferably with fixed standing pins (18) cooperate: @n can that also lie essentially at right angles to the shaft (9). 11 '9 ₉ Vorrichtimg nachänsprueh among others ^ urah in the ribs (8) at their lower daft Hänöejm, in the axial direction of d®r Blelchturmes' (1) g © see © n _a with a disc (?) Are connected " 90982 5 / U53 BATH ORIGINAL ISO device according to claim 9 " characterized in that the upper and / or lower edges of the ribs are serrated", wavy or in some other similar manner. 12a Device according to Claims 7 and 8, characterized in that the machining parts consist of rotating pins (14) which run in the direction of movement of the pulp falling into the bleaching tower (1) are arranged essentially axially and preferably cooperate with stationary pins (17) which are also arranged essentially axially. l4o device according to claim 13 »characterized» that all pegs are arranged essentially radially with respect to the direction of movement of the pulp falling into the Blelohturm (1) 15 ° device according to one or more of claims 7 to 14, characterized in that the one arranged in the path of the pulp falling into the lead tower (1) Machining most (6) has an outer diameter »the 1 "to 5 times", preferably 2 to 4 times and in particular about? Times as large as the diameter the pulp inlet opening in the bleaching tower. 909825 / U53 SAD ORfQtNAl, Blank page