TH16206A - Method for bleaching the pulp without using chemicals containing chlorine. - Google Patents
Method for bleaching the pulp without using chemicals containing chlorine.Info
- Publication number
- TH16206A TH16206A TH9301002180A TH9301002180A TH16206A TH 16206 A TH16206 A TH 16206A TH 9301002180 A TH9301002180 A TH 9301002180A TH 9301002180 A TH9301002180 A TH 9301002180A TH 16206 A TH16206 A TH 16206A
- Authority
- TH
- Thailand
- Prior art keywords
- bleaching
- recovery unit
- chemicals
- recovered
- bleach
- Prior art date
Links
- 239000000126 substance Substances 0.000 title claims abstract 7
- 238000004061 bleaching Methods 0.000 title claims abstract 6
- 238000000034 method Methods 0.000 title claims abstract 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title abstract 2
- 239000000460 chlorine Substances 0.000 title abstract 2
- 229910052801 chlorine Inorganic materials 0.000 title abstract 2
- 239000007844 bleaching agent Substances 0.000 claims abstract 4
- 238000011084 recovery Methods 0.000 claims abstract 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract 3
- 229920005610 lignin Polymers 0.000 claims abstract 2
- 239000001301 oxygen Substances 0.000 claims abstract 2
- 229910052760 oxygen Inorganic materials 0.000 claims abstract 2
- 238000009835 boiling Methods 0.000 claims 1
- 230000003716 rejuvenation Effects 0.000 claims 1
- 238000001311 chemical methods and process Methods 0.000 abstract 1
Abstract
การประดิษฐ์นี้เกี่ยวข้องกับกระบวนการสำหรับทำการผลิตเยื่อ กระดาษ ซึ่งถูกต้มภายใต้ภาวะเป็นด่างและซึ่งถูกฟอกจางโดย ไม่ใช้สารเคมีฟอกสี ที่มีคลอรีนที่ซึ่งในกระบวนการสารเคมี ใช้ต้มที่ใช้แล้วถูกกู้กลับคืนในหน่วยกู้กลับ (18) ที่ หนึ่ง และสารเคมีฟอกสีใช้แล้วถูกกู้กลับคืนในหน่วยกู้กลับ (12) ที่สองและที่ดี ควรก่อกำเนิดกลับพวกสารเคมีฟอกสี เหล่า นี้ทั้งหมดหรือบางส่วนและใช้อีกในขั้นตอน ขจัดลิกนินด้วย ออกซิเจน (7) และ/หรือ ในขั้นตอนทำการฟอกสี TCF (9) The invention involved a process for producing pulp which was boiled under alkaline conditions and which was bleached by Do not use bleach. Containing chlorine, in which chemical processes The used boil was recovered in the first recovery unit (18) and the used bleach chemical was recovered in the second and good recovery unit (12). All or part of these bleaching chemicals should be borne and used again in a single step. Removes lignin with oxygen (7) and / or during bleaching step TCF (9).
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TH16206A true TH16206A (en) | 1995-07-19 |
Family
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