CS272485B1 - A method of producing pulp from a high-wood pulp brass paper - Google Patents
A method of producing pulp from a high-wood pulp brass paper Download PDFInfo
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- CS272485B1 CS272485B1 CS882452A CS245288A CS272485B1 CS 272485 B1 CS272485 B1 CS 272485B1 CS 882452 A CS882452 A CS 882452A CS 245288 A CS245288 A CS 245288A CS 272485 B1 CS272485 B1 CS 272485B1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
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Abstract
Riešania spadá do oblasti chómis. □ano podstata spočívá v tom, že sa zbarový papier delignifikuje kysličnlkom chloričitým v množstva 1 až 150% hmot., počítané na hmotnost a. s. Zbarovóho papiara pri teplota 25 až 75 °C, počas 1 až 7 hodin, pričom pomar zbarového papiara k roztoku js 1:1 až 1:50. t Sposob sa dá využívat v celulozo-papiersnskom prismysls pri výrobs buničin zo zberového papiara.The solution falls into the field of chemistry. □and the essence lies in the fact that the waste paper is delignified with chlorine dioxide in an amount of 1 to 150% by weight, calculated on the weight of the a. s. Waste paper at a temperature of 25 to 75 ° C, for 1 to 7 hours, while the ratio of waste paper to the solution is 1:1 to 1:50. The method can be used in the pulp and paper industry in the production of pulp from waste paper.
Description
CS 272 485 BlCS 272 485 B1
Vynález sa týká sposobu výroby buničin zo zberového papieru s vysokým obsahom dře-vitých podialov (vláknin).BACKGROUND OF THE INVENTION The present invention relates to a process for producing pulp from waste paper having a high content of wood pulp.
Zberový papier ako napr. noviny, niektoró druhy časopisov, brožúr a knih, telefónnezoznamy a pod. sa v súčasnosti vo svata skoro výhradně spracovávajú syatómom De-Xnking,kterého princip spočiva v odstraňovaní tlačiarenských farieb z rozvláknaného zberovéhopapiera a takto připravená látka je vhodná ako zanáška iba do niektorých sortimentov vy-rábaných papierov, čo je názorné popisanó v PPI oct. 1982.Harvested paper such as newspapers, some types of magazines, brochures and books, phone books, and so on. At present, they are almost exclusively processed in the world by the De-Xnking system, the principle of which is the removal of printing inks from the pulverized collection paper, and the fabric thus prepared is suitable only for some types of manufactured paper, which is illustrated in PPI oct. 1982.
Princip odstranovania tlačiarenských farieb popisuje celý rad patentov, napr. ajčsl. patenty 175 69S a 205 602, ktoré umožňujú odstránit tlačiarenské farhy v potenciál-nom vire. Sálej je známy flotačný systém odstranovania tlačiarenských farieb z tohoto dru-hu papiera na zariadeniach firmy Voith-NSR, Escher Wyss-Svajciarsko, Beloit-Anglicko,PAMA-NDR a pod. Oedným z nedostatkov týchto pokusov je, že sú prakticky neúčinné na ofse-tová tlač rotopapiera s použitím rýchlo vytvrdzovaných farieb, ktorá technologie je dnesvo 3vete běžná. Nevýhodou je aj značná chúlostivost flotačných zariadeni na dodržaniepresnej zanášky zberového papiera z hladiska homogenity vlákien. Výrobu buničiny zo zberového papiera popisujú autoři vynálezu AO 248 451 Doc. Ing.Ladislav Sutý, CSc. a i. Tento vynález popisuje tlakové postupy a nezahrnuje všetkydostupné a účinné činidlá, ktoré sú ekonomicky výhodné.The principle of ink removal is described in a number of patents, e.g. patents 175, 69S and 205,602, which make it possible to remove printing inks in potential vortex. Sallow is a well-known flotation printing ink removal system from this type of paper on Voith-NSR, Escher Wyss-Svajciarsko, Beloit-England, PAMA-NDR and so on. One of the drawbacks of these experiments is that they are virtually ineffective in offset printing of paper using fast cured colors, which technology is common today. The disadvantage is also the considerable sensitivity of flotation devices to maintain the exact load of the gathering paper in view of the homogeneity of the fibers. The production of pulp from waste paper is described by the inventors AO 248 451 Doc. Ladislav Sutý, CSc. and i. The present invention describes pressure processes and does not include all available and effective agents that are economically advantageous.
Ooterajšie nevýhody sú odstránenó vynálezora, ktoróho podstata spočiva v tom, že 3azberový papier s vysokým obsahom dřevitých podielov (vláknin) delignifikuje vodným roz-tokám C102 připraveným běžnými procesmi (podlá postupu Kesting, Mathieson, ERCO 2 až 7a i) alebo uvolněným z NaClOg prídavkom kyseliny (napr. octovéj) v množstva 1 až 150%hmot. počítané na hmotnost a. s. zberového papiera, pri pomere zberového papiera k rozto-ku 1:1 až 1:50, při teplotách 25° až 75 °C (beztlakove) za čas 1 až 7 hod.The present drawbacks have been eliminated by the inventor, which is that a 3-ply paper with a high content of wood fibers delignifies C102 aqueous solutions prepared by conventional processes (according to Kesting, Mathieson, ERCO 2 to 7a i) or released from NaClOg by addition of % acid (e.g. acetic acid) in an amount of 1 to 150 wt. based on the weight of the recovered paper, at a collection paper ratio of 1: 1 to 1:50, at 25 ° to 75 ° C (pressureless) for 1 to 7 hours.
Pri tomto sposobe výroby buničin použitím kysličnika chloričitého dochádza k oxi-dačnímu procesu, kterým sa dosahujú vysoké mechanické pevnosti. Například pri doterazpouživanom sposobe přípravy buničin pri výtažku 80 - 85 % 3a dosiahla tržná dížka do 4 km.Pri použiti sposobu podlá vynálezu tržná dížka stúpla přitom istom výtažku na 6,5 km.In this process of producing pulp using chlorine dioxide, an oxidation process is achieved which achieves high mechanical strengths. For example, with the pulp preparation used to date with an 80-85% 3a yield, the laceration has reached a length of 4 km. In accordance with the invention, the laceration has increased to some 6.5 km.
Balšou výhodou sposobu je skutočno3t, že sa pracuje pri podstatné nižších teplotách(25 až 75 °C) a sposob je beztlakový.Indeed, the preferred advantage of the process is that it is operated at substantially lower temperatures (25 to 75 ° C) and is free of pressure.
Sposob bol odskúšaný v laboratérnom a prevádzkovom meritku. Dá ea využívat v celu-lozo-papierenskom priemysle pri výrobě buničin zo zberového papiera. Příklad 1The method has been tested in laboratory and operational scale. It can be used in the pulp and paper industry for the production of pulp from waste paper. Example 1
Na 25 kg vzduchosuchého zberového papiera sa přidá 625 1 vodného roztoku s obsahom1% C102 vztiahnuté na hmotnost papiera a zohrieva sa v nádobě (beztlakove) pri 75 °C začas 4 hod. Ziska sa buničina s výtažkem 32%,' tržnou dížkou 3,3 km a pevnostou v prietla-ku 120 kPa. Příklad 2625 L of an aqueous solution containing 1% C102, based on the weight of the paper, is added to 25 kg of air-dried recovered paper and heated in a vessel (pressureless) at 75 ° C for 4 hours in time. A pulp with a yield of 32% is obtained; km and a strength of 120 kPa. Example 2
Ako přiklad 1 s tým, že množstvo přidaného C102 je 23%, vztiahnuté na hmotnost pa-piera, reakcia prebieha pri tej istej teplote počas 2 hod. Ziska sa buničina s výtažkom85% počítané na zanášku zberového novinového papiera s tržnou dížkou 6,5 km a pevnostouv prietlaku 220 fcPa. Přiklad 3As Example 1, with the addition of C102 being 23% based on the weight of the paper, the reaction proceeds at the same temperature for 2 hours. A pulp with a yield of 85% is obtained, based on a newsprint of 6.5 km. and a tensile strength of 220 fcPa. Example 3
Ako přiklad 1 s tým, že množstvo přidaného Cl02 je 128% vztiahnuté na hmotnost pa_piera a čas trvania 3pracovania je 6 hod. Ziska sa buničina s výtažkom 76%, tržnou dížkou 9,5 km a pevnostou v prietlaku 460 kPa.As Example 1, with the amount of added ClO 2 being 128% based on the weight of the sheet and the working time of 6 hours, a pulp having a yield of 76%, a lag of 9.5 km and a strength of 460 kPa was obtained.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS882452A CS272485B1 (en) | 1988-04-11 | 1988-04-11 | A method of producing pulp from a high-wood pulp brass paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS882452A CS272485B1 (en) | 1988-04-11 | 1988-04-11 | A method of producing pulp from a high-wood pulp brass paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS245288A1 CS245288A1 (en) | 1990-05-14 |
| CS272485B1 true CS272485B1 (en) | 1991-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS882452A CS272485B1 (en) | 1988-04-11 | 1988-04-11 | A method of producing pulp from a high-wood pulp brass paper |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS272485B1 (en) |
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1988
- 1988-04-11 CS CS882452A patent/CS272485B1/en unknown
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| Publication number | Publication date |
|---|---|
| CS245288A1 (en) | 1990-05-14 |
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