TH21824A - PROCESS FOR DELIGNIFICATION AND BLEACHING OF UNBLEACHED PULP SUSPENSIONS OR PULP SUSPENSIONS PREBLEACHED IN AN - Google Patents
PROCESS FOR DELIGNIFICATION AND BLEACHING OF UNBLEACHED PULP SUSPENSIONS OR PULP SUSPENSIONS PREBLEACHED IN ANInfo
- Publication number
- TH21824A TH21824A TH9501001410A TH9501001410A TH21824A TH 21824 A TH21824 A TH 21824A TH 9501001410 A TH9501001410 A TH 9501001410A TH 9501001410 A TH9501001410 A TH 9501001410A TH 21824 A TH21824 A TH 21824A
- Authority
- TH
- Thailand
- Prior art keywords
- pulp
- pulp suspensions
- unbleached
- bleached
- bleaching
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract 4
- 238000004061 bleaching Methods 0.000 title claims abstract 3
- 239000000725 suspension Substances 0.000 title 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims abstract 6
- 150000002978 peroxides Chemical class 0.000 claims abstract 4
- 239000004155 Chlorine dioxide Substances 0.000 claims abstract 3
- 235000019398 chlorine dioxide Nutrition 0.000 claims abstract 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract 2
- 230000002378 acidificating effect Effects 0.000 claims abstract 2
- 229910001882 dioxygen Inorganic materials 0.000 claims abstract 2
- 229920005610 lignin Polymers 0.000 claims abstract 2
- 238000005406 washing Methods 0.000 claims abstract 2
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- 238000002203 pretreatment Methods 0.000 abstract 1
Abstract
กรรมวิธีสำหรับขจัดลิกนิน และ/หรือฟอกจางเยื่อกระดาษแขวนลอยที่ไม่ได้ฟอกจาง เยื่อกระดาษแขวนลอยที่ฟอกจากล่วงหน้าด้วยเพอร์ออกไซด์ในมัชฌิมที่เป็นด่างหรือฟอกจาง ล่วงหน้าในมัชฌิมที่เป็นด่างด้วยแก๊สออกซิเจนที่อัดให้มีความดันและถ้าหากต้องการ, ทำให้ เป็นกลางโดยการล้าง, มีลักษณะจำเพาะที่ทำการบำบัดเยื่อกระดาษแขวนลอยด้วยสาร ประกอบเพอร์ออกไซด์ในสภาพแวดล้อมที่เป็นกรดก่อนการฟอกจางด้วยคลอรีนไดออกไซด์ Procedures for eliminating lignin And / or faded, unbleached suspended pulp Pre-bleached pulp with peroxide in an alkaline or bleached medium. Pre-treatment in alkaline medium with pressurized oxygen gas and, if desired, neutralized by washing, characterized by treatment of pulp suspended with reagents. Contains peroxide in an acidic environment before chlorine dioxide bleaching.
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TH21824A true TH21824A (en) | 1996-11-20 |
Family
ID=
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE48290T1 (en) | PROCESSES FOR DELIGNIFICATION AND BLEACHING OF PULP. | |
| BR9307521A (en) | Process for delignification and bleaching of pulp containing lignocellulose | |
| CA2111519A1 (en) | Oxygen/ozone/peracetic acid delignification and bleaching of cellulosic pulps | |
| FI934036L (en) | Method for bleaching pulp with chlorine-free chemicals | |
| DE69301285D1 (en) | Process for delignification of chemical pulps | |
| ATE54475T1 (en) | PROCESSES FOR BLEACHING AND DELIGNIFICATION OF PULP-CONTAINING PRODUCTS. | |
| NO176810C (en) | Method of delignifying lignocellulosic fibers | |
| DE69011636D1 (en) | Process for bleaching chemical pulp. | |
| TH21824A (en) | PROCESS FOR DELIGNIFICATION AND BLEACHING OF UNBLEACHED PULP SUSPENSIONS OR PULP SUSPENSIONS PREBLEACHED IN AN | |
| CA2347454A1 (en) | Method and apparatus for treating pulp | |
| DE69528660D1 (en) | BLEACHING PAPER pulp | |
| ES2038954A6 (en) | Bleaching of paper pulp | |
| ES2012324A4 (en) | PROCEDURE FOR THE MANUFACTURE OF WHITE CHEMICAL THERMOMECHANICAL PASTA. | |
| ATE24745T1 (en) | HYPOCHLORITE TREATMENT OF CHEMICAL PAPER PULP. | |
| CA2036173A1 (en) | Process for the chlorine-free bleaching and delignification of cellulose | |
| AU6986294A (en) | Method of bleaching pulp without using chlorine chemicals | |
| FI934056L (en) | Method for bleaching pulp | |
| CA2186176A1 (en) | Method and apparatus for ozone bleaching of cellulosic pulp at low consistency | |
| SE9401628D0 (en) | Oxygen delignification procedure | |
| RU93031029A (en) | METHOD OF OBTAINING WHITE PULP OF PULP | |
| RU95114367A (en) | Method of delignifying and bleaching lignin-cellulose pulp | |
| SE9502365D0 (en) | Bleaching of lignocellulosic fibrous material | |
| DE59105105D1 (en) | Process for low-chlorine bleaching and delignification of cellulose. | |
| SE9203859L (en) | Chlorine-free pulp coating | |
| RU94036859A (en) | METHOD OF BLEACHING CELLULOSE |