FI69325B - Foerfarande foer flisfoervaermning - Google Patents
Foerfarande foer flisfoervaermning Download PDFInfo
- Publication number
- FI69325B FI69325B FI820547A FI820547A FI69325B FI 69325 B FI69325 B FI 69325B FI 820547 A FI820547 A FI 820547A FI 820547 A FI820547 A FI 820547A FI 69325 B FI69325 B FI 69325B
- Authority
- FI
- Finland
- Prior art keywords
- chips
- air
- heated
- temperature
- steam
- Prior art date
Links
- 238000011010 flushing procedure Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims description 43
- 239000002023 wood Substances 0.000 claims description 20
- 238000010025 steaming Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 17
- 229920006395 saturated elastomer Polymers 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims 1
- 239000003570 air Substances 0.000 description 34
- 238000010411 cooking Methods 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000012733 comparative method Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000007430 reference method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007071 enzymatic hydrolysis Effects 0.000 description 1
- 238000006047 enzymatic hydrolysis reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012632 extractable Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Commercial Cooking Devices (AREA)
Claims (9)
1. Förfarande för förvärmning av träflis före dess basning med änga, varvid träflisen under förvärmningen 5 värmes i ett eller flera steg tili allt högre temperaturer, varpä den slutligen i basningskärlet uppvärmes tili omkring 120°C, kännetecknat därav, att värmningen av flisen under förvärmningens första och det eller de när-mast följande stegen utföres direkt medelst eventuellt in-10 different gas innehällande fuktmättad varmluft, vilken har en temperatur av 55-90°C, företrädesvis 70-90°C.
2. Förfarande enligt patentkravet 1, kännetecknat därav, att förvärmningen av flisen utföres i tvä steg i en omedelbart före basningskärlet placerad 15 flisficka, varvid den i första steget använda, fuktmättade varmluften värmes tili omkring 70°C av i en kontaktanord-ning motströms infört kondensat av omkring 80°C temperatur.
3. Förfarande enligt patentkravet 1, kännetecknat därav, att förvärmningen av flisen utföres 20. tre steg i en omedelbart före basningskärlet placerad flisficka, varvid den i första steget använda fuktmättade varmluften värmes tili omkring 70°C i en av hopbyggda kon-densorer bestäende luftvärmarenhet och imbläses först (överst) i flisfickan, i flisens rörelseriktning räknat, 25 att den i det andra steget använda, fuktmättade varmluften värmes tili omkring 90°C i en andra, den första liknande, luftvärmarenhet och inbläses i flisfickan efter (lägre än) den första, i flisens rörelseriktning räknat.
4. Förfarande enligt patentkraven 1-3, k ä n n e -30 t e c k n a t därav, att den använda fuktmättade varmluften recirkuleras.
5. Förfarande enligt patentkraven 1-4, kännetecknat därav, att omedelbart efter förvärmningen flisen värmes ytterligare med sekundäränga av en tempera- 35 tur av minst 100°C.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8006046A SE422604B (sv) | 1980-08-29 | 1980-08-29 | Forfarande for flidforvermning |
| SE8006046 | 1980-08-29 | ||
| SE8100218 | 1981-01-16 | ||
| PCT/SE1981/000218 WO1982000838A1 (en) | 1980-08-29 | 1981-07-15 | A method for preheating wood chips |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI820547L FI820547L (fi) | 1982-03-01 |
| FI69325B true FI69325B (fi) | 1985-09-30 |
| FI69325C FI69325C (fi) | 1986-01-10 |
Family
ID=20341628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI820547A FI69325C (fi) | 1980-08-29 | 1982-02-18 | Foerfarande foer flisfoervaermning |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4401510A (sv) |
| JP (1) | JPS6262194B2 (sv) |
| CA (1) | CA1169285A (sv) |
| FI (1) | FI69325C (sv) |
| SE (1) | SE422604B (sv) |
| WO (1) | WO1982000838A1 (sv) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3149587A1 (de) * | 1981-12-15 | 1983-06-23 | Werner & Pfleiderer, 7000 Stuttgart | Verfahren und vorrichtung zur hydrolytischen spaltung von cellulose |
| SE451605B (sv) * | 1983-06-27 | 1987-10-19 | Mo Och Domsjoe Ab | Forfarande och anordning for forbehandling av lignocellulosamaterial |
| US4601262A (en) * | 1984-03-28 | 1986-07-22 | Jones Dallas W | Energy balance process for the pulp and paper industry |
| SE8502210L (sv) * | 1985-05-06 | 1986-11-07 | Sunds Defibrator | Framstellning av mekanisk massa |
| SE8502807D0 (sv) * | 1985-06-06 | 1985-06-06 | Ahlstroem Foeretagen | Sett och apparatur for att deaktivera avlutar |
| EP0472820B1 (en) * | 1990-08-17 | 1997-10-29 | Alcell Technologies Inc. | Continuous solvent pulping process |
| FI92226B (sv) * | 1991-04-15 | 1994-06-30 | Ahlstroem Oy | Förfarande för förtjockning av avlutar och återvinning av kokkemikalier vid massaframställning med alkoholbaserade kokvätskor |
| DE69839023D1 (de) | 1998-11-09 | 2008-03-06 | Metso Fiber Karlstad Ab | Verfahren zur herstellung von dampf aus schwarzlauge |
| WO2004106624A1 (en) * | 2003-06-03 | 2004-12-09 | Pacific Pulp Resources Inc. | Method for producing pulp and lignin |
| US7815741B2 (en) | 2006-11-03 | 2010-10-19 | Olson David A | Reactor pump for catalyzed hydrolytic splitting of cellulose |
| US7815876B2 (en) | 2006-11-03 | 2010-10-19 | Olson David A | Reactor pump for catalyzed hydrolytic splitting of cellulose |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1781712A (en) * | 1925-02-05 | 1930-11-18 | Pine Waste Products Inc | Wood-pulp material |
| US3215587A (en) * | 1963-01-21 | 1965-11-02 | Lummus Co | Continuous process and apparatus for delignification of cellulosic material |
| US3425477A (en) * | 1966-09-28 | 1969-02-04 | Marathon Eng Inc | Method for heat recovery in evaporating and burning spent liquor |
| NZ191061A (en) * | 1978-07-27 | 1982-03-16 | Obbola Linerboard Ab | Chemical pulp manufacture cellulosic material preheated by steam in a storage container |
-
1980
- 1980-08-29 SE SE8006046A patent/SE422604B/sv not_active IP Right Cessation
-
1981
- 1981-07-15 JP JP56502598A patent/JPS6262194B2/ja not_active Expired
- 1981-07-15 WO PCT/SE1981/000218 patent/WO1982000838A1/en unknown
- 1981-08-28 US US06/297,400 patent/US4401510A/en not_active Expired - Fee Related
- 1981-08-31 CA CA000384881A patent/CA1169285A/en not_active Expired
-
1982
- 1982-02-18 FI FI820547A patent/FI69325C/fi not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57501291A (sv) | 1982-07-22 |
| FI820547L (fi) | 1982-03-01 |
| JPS6262194B2 (sv) | 1987-12-25 |
| SE8006046L (sv) | 1982-03-01 |
| FI69325C (fi) | 1986-01-10 |
| SE422604B (sv) | 1982-03-15 |
| WO1982000838A1 (en) | 1982-03-18 |
| CA1169285A (en) | 1984-06-19 |
| US4401510A (en) | 1983-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed | ||
| MM | Patent lapsed |
Owner name: MODO-CHEMETICS AB |