DE680745C - Process for the further processing of waste liquors from cellulose production - Google Patents

Process for the further processing of waste liquors from cellulose production

Info

Publication number
DE680745C
DE680745C DEK136465D DEK0136465D DE680745C DE 680745 C DE680745 C DE 680745C DE K136465 D DEK136465 D DE K136465D DE K0136465 D DEK0136465 D DE K0136465D DE 680745 C DE680745 C DE 680745C
Authority
DE
Germany
Prior art keywords
waste liquors
further processing
cellulose production
smoldering
cellulose
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.)
Expired
Application number
DEK136465D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DEK136465D priority Critical patent/DE680745C/en
Application granted granted Critical
Publication of DE680745C publication Critical patent/DE680745C/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/12—Combustion of pulp liquors
    • D21C11/125—Decomposition of the pulp liquors in reducing atmosphere or in the absence of oxidants, i.e. gasification or pyrolysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/06—Evaporators with vertical tubes
    • B01D1/065—Evaporators with vertical tubes by film evaporating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/06—Evaporators with vertical tubes
    • B01D1/12—Evaporators with vertical tubes and forced circulation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Drying Of Solid Materials (AREA)

Description

Verfahren zur Weiterverarbeitung von Ablaugen aus der Zellulosefabrikation nach Patent 642 051 In .dem Hauptpatent ist ein Verfahren zum Eindampfen von Ablaugen raus. der Zellulösefabrikation beschrieben, bei dem die Dünnlauge aus :der Verdampfanlage auf eine Anreicherung bis zu 750/0 gebracht und hierauf meinem Zerstäuber, gegebenenfalls unter Vakuum, eingedickt wird, um ein Trockengut von etwa 20% Wassergehalt zu erzeugen. Auf diese Weise wird also die Dünnlauge sehr schnell eingedickt, und man erhält ein Trokkengut von etwa 2o% Wassergehalt. Hierbei fällt das Trockengut an, ohne daß. es: Zusätze enthält, die nach dem früheren Verfahren, in dem man die Ablaugen nicht bis auf einen so geringen Wassergehalt eindicken konnte, notwendig waren.Process for the further processing of waste liquors from cellulose production according to patent 642 051 In .dem main patent a process for evaporating waste liquors is out. the cellulose production, in which the thin liquor from: the evaporation plant is brought to an enrichment of up to 750/0 and then my atomizer, possibly under vacuum, is thickened to produce a dry material with about 20% water content. In this way, the thin liquor is thickened very quickly, and a dry material with a water content of about 20% is obtained. Here, the dry material is obtained without. es: Contains additives that were necessary according to the earlier process, in which the waste liquors could not be thickened to such a low water content.

Gemäß ,der vorliegenden Erfindung wird nun das .so erhaltene Trockengut "unmittelbar im Anschluß an die Trocknung der Schwelurig unterworfen, da die Dicklauge nach: der Arbeitsweise des. Hauptpatents in Form einer Emulsion entfällt, die pechartigen Charakter hat. So kann man diese Masse unmittelbar in den Schwelofen bringen, was natürlich dem alten Verfahren gegenüber ,einen erheblichen Fortschritt' bedeutet, weil dieses Verfahren verhältnismäßig sehr schnell vor sich geht, da alle weiteren Zwischenverfahren ausgeschaltet ;sind. Infolgedessen ist es auch nicht mehr notwendig, der Lauge noch Magerungsmittel zuzusetzen. Die Verarbeitung des aus der Schwelung erhaltenen Kokses richtet sich nach dem Aufschließungsverfahren des Holzes; z. B.According to the present invention, the dry material thus obtained is now "Immediately after the drying of the Schwelurig subjected, as the thick liquor according to: the working method of the main patent in the form of an emulsion is omitted, the pitch-like Has character. So you can bring this mass directly into the smoldering furnace, what of course means 'a considerable step forward' compared to the old procedure, because this procedure is relatively very quick, as all the others Intermediate proceedings are switched off. As a result, it is no longer necessary add a lean agent to the lye. The processing of the from the smoldering obtained coke depends on the digestion process of the wood; z. B.

ä) bei Fabriken, die nach dem Sulfatverfahren arbeiten, werden anschließend die Salze aus dem Koks in einem Schmelzofen in bekannter Weise ausgeschmolzen, wobei die überschußwärme zur Retortenbeheizung oder Dampferzeugung verwendet wird; b) bei Fabriken, die mit Natron oder anderen Lösungen aufschließen, wird der Koks in Verbrennungskammern verfeuert, und die Salze werden aus den Verbrennu ngsrückständen ausgewaschen (die überschußwärme wird wieder zur Retortenheizung oder Dampferzeugung verwendet) ; c) bei Fabriken, die nachdem Sulfitverfahren aufschließen, wird der Koks als Brennstoff zur Dämpferzeugung verwendet.ä) in factories that work according to the sulphate process are subsequently the salts are melted out of the coke in a smelting furnace in a known manner, whereby the excess heat is used for retort heating or steam generation; b) in factories that catch up with baking soda or other solutions, the coke is used in Combustion chambers are burned and the salts are made from the combustion residues washed out (the excess heat is used again for retort heating or steam generation used) ; c) for factories that break up using the sulphite process, the coke is used as fuel to generate steam.

Das Trdckengut kann auch unter Ausschaltung des Schwelverfahrens unmittelbar, wie unter a, b, c ,angegeben, verarbeitet und die gesamte überschußwärme zur Dampferzeugung verwendet werden.The dry goods can also be processed immediately, with the smoldering process being eliminated as specified under a, b, c, processed and the entire excess heat for steam generation be used.

Claims (1)

PA TrNTANSPRUCH Verfahren zur Weiterverarbeitung von Ablaugen aus der Zellulos,efabrikation nach Patent 642 0 5 i, wonach ein Trockengut von etwa: 2o% W;assergehalt erzeugt wird, dadurch gekennzeichnet, daß dieses Gut unmittelbar der Schwelüng unterworfen wird.PA TrNTANSPRUCH Process for the further processing of waste liquors from cellulose, production according to patent 642 0 5 i, according to which a dry product with about: 20% water content is produced, characterized in that this product is directly subjected to smoldering.
DEK136465D 1934-01-21 1934-12-21 Process for the further processing of waste liquors from cellulose production Expired DE680745C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK136465D DE680745C (en) 1934-01-21 1934-12-21 Process for the further processing of waste liquors from cellulose production

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEK132897D DE642051C (en) 1934-01-21 1934-01-21 Process and device for the evaporation of liquids and solutions
DEK136465D DE680745C (en) 1934-01-21 1934-12-21 Process for the further processing of waste liquors from cellulose production

Publications (1)

Publication Number Publication Date
DE680745C true DE680745C (en) 1939-09-07

Family

ID=32965983

Family Applications (2)

Application Number Title Priority Date Filing Date
DEK132897D Expired DE642051C (en) 1934-01-21 1934-01-21 Process and device for the evaporation of liquids and solutions
DEK136465D Expired DE680745C (en) 1934-01-21 1934-12-21 Process for the further processing of waste liquors from cellulose production

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEK132897D Expired DE642051C (en) 1934-01-21 1934-01-21 Process and device for the evaporation of liquids and solutions

Country Status (4)

Country Link
BE (1) BE407375A (en)
DE (2) DE642051C (en)
FR (1) FR784847A (en)
GB (1) GB439538A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299937A (en) * 1965-04-08 1967-01-24 Ralph W Cook Feed liquid inlet flow device
CN107281772A (en) * 2017-07-14 2017-10-24 谌小伟 Destilling tower, stoste purification system and process for purifying raw
EP3995194A1 (en) * 2020-11-06 2022-05-11 Regasko GmbH Degassing column, system and method for degassing and / or thickening a reaction medium

Also Published As

Publication number Publication date
BE407375A (en)
GB439538A (en) 1935-12-09
DE642051C (en) 1937-02-20
FR784847A (en) 1935-07-25

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