FI68870B - Foerfarande foer kemikaliereglering vid behandling med gas - Google Patents
Foerfarande foer kemikaliereglering vid behandling med gas Download PDFInfo
- Publication number
- FI68870B FI68870B FI811942A FI811942A FI68870B FI 68870 B FI68870 B FI 68870B FI 811942 A FI811942 A FI 811942A FI 811942 A FI811942 A FI 811942A FI 68870 B FI68870 B FI 68870B
- Authority
- FI
- Finland
- Prior art keywords
- gas
- substance
- vessel
- density
- pulp
- Prior art date
Links
- 239000000126 substance Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 23
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 229910001882 dioxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 238000007792 addition Methods 0.000 description 8
- 238000004061 bleaching Methods 0.000 description 5
- 229920005610 lignin Polymers 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000036284 oxygen consumption Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000005303 weighing 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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1068—Bleaching ; Apparatus therefor with O2
-
- 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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1026—Other features in bleaching processes
- D21C9/1052—Controlling the process
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/34—Paper
- G01N33/343—Paper pulp
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Wood Science & Technology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Paper (AREA)
Claims (8)
1. Förfarande för kontinuerlig bestämning av restgashalt vid gasbehandling av en i ett huvudsakligen jämnt volymflöde rörlig substans i flytande eller suspenderad form, speciellt ?v on massa bestäende av cellulosafiber suspenderade i vätska, varvid under behandlingen medelst bestämning av förbrukad gasmängd mängden tillförd och tili smä bubblor finfördelad gas regleras sä, att önskat behandlingsresultat uppnäs, kännetecknat av att a) man mäter substansens densitet vid minst en tidpunkt eller genomsnittliga densiteten under minst en tidsperiod, b) man mäter substansens temperatur och tryck svarande mot densiteten mätt enligt a), c) man beräknar substansens restgashalt vid respektive tidpunkt eller tidsperiod med ledning av mätningarna enligt a) och b).
2. Förfarande enligt patentkrav 1, kännetecknat av att substansen rör sig genom ett huvudsaligen vertikalt och vid huvudsakligen konstant överatmosfäriskt tryck och temperatur över 80°C arbetande kärl, tili vars ena ände substansen med fördelad gas kontinuerligt inmatas och frän vars andra ände substansen med eventuellt restgas kontinuerligt lämnar kärlet.
3. Förfarande enligt patentkrav 2, kännetecknat av att densitetsvärdena justeras med avseende pä eventuella variationer i substansens genomströmningshastighet i kärlet.
4. Förfarande enligt patentkrav 3, kännetecknat av att massa, i den män den inte pumpas in i kärlet, tryckes genom kärlet medelst ett högre tryck i ett föreliggande behandlingssteg, t ex i en kontinuerlig kokare.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8005959 | 1980-08-26 | ||
| SE8005959A SE421019B (sv) | 1980-08-26 | 1980-08-26 | Forfarande for kemikaliereglering vid behandling av en substans, speciellt massa, med gas |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI811942L FI811942L (fi) | 1982-02-27 |
| FI68870B true FI68870B (fi) | 1985-07-31 |
| FI68870C FI68870C (fi) | 1985-11-11 |
Family
ID=20341598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI811942A FI68870C (fi) | 1980-08-26 | 1981-06-22 | Foerfarande foer kemikaliereglering vid behandling med gas |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4419184A (sv) |
| JP (1) | JPS5771486A (sv) |
| AT (1) | AT375977B (sv) |
| BR (1) | BR8104972A (sv) |
| CA (1) | CA1170430A (sv) |
| DE (1) | DE3129010A1 (sv) |
| FI (1) | FI68870C (sv) |
| FR (1) | FR2489516A1 (sv) |
| NO (1) | NO156535C (sv) |
| SE (1) | SE421019B (sv) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI71178C (sv) * | 1984-11-08 | 1988-05-18 | Rauma Repola Oy | Förfarande för reglering av syreblekningsprocess |
| US4946555A (en) * | 1989-01-19 | 1990-08-07 | Canadian Liquid Air Ltd./Air Liquide Canada | Apparatus and method for measuring vent gas flow rates and parameters in pulp and paper processing |
| US5883292A (en) * | 1996-01-17 | 1999-03-16 | Twenty-First Century Research Corporation | Reaction control by regulating internal condensation inside a reactor |
| US6288270B1 (en) | 1996-06-24 | 2001-09-11 | Rpc Inc. | Methods for controlling the reaction rate of a hydrocarbon to an acid by making phase-related adjustments |
| US6337051B1 (en) | 1996-06-24 | 2002-01-08 | Rpc Inc. | Device for detecting formation of a second liquid phase |
| US6143927A (en) * | 1996-06-24 | 2000-11-07 | Rpc Inc. | Methods for removing catalyst after oxidation of hydrocarbons |
| US5922908A (en) * | 1996-06-24 | 1999-07-13 | Twenty-First Century Research Corporation | Methods for preparing dibasic acids |
| US6039902A (en) * | 1996-06-24 | 2000-03-21 | Rpc Inc. | Methods of recycling catalyst in oxidations of hydrocarbons |
| US5801273A (en) | 1996-08-21 | 1998-09-01 | Twenty-First Century Research Corporation | Methods and devices for controlling the reaction rate of a hydrocarbon to an intermediate oxidation product by pressure drop adjustments |
| AU3811597A (en) | 1996-08-21 | 1998-03-06 | Twenty-First Century Research Corporation | Methods and devices for controlling the reaction by adjusting the oxidant consumption rate |
| US20010053864A1 (en) * | 1996-08-21 | 2001-12-20 | Decoster David C. | Devices for controlling the reaction rate and/or reactivity of hydrocarbon to an intermediate oxidation product by adjusting the oxidant consumption rate |
| US6103933A (en) * | 1996-11-07 | 2000-08-15 | Rpc Inc. | Methods for controlling the oxidation rate of a hydrocarbon by adjusting the ratio of the hydrocarbon to a rate-modulator |
| US5817868A (en) * | 1996-11-12 | 1998-10-06 | Twenty-First Century Research Corporation | Method and devices for controlling the oxidation of a hydrocarbon to an acid by regulating temperature/conversion relationship in multi-stage arrangements |
| SE510740C2 (sv) * | 1996-11-26 | 1999-06-21 | Sunds Defibrator Ind Ab | Styrning av syrgasdelignifiering |
| US5824819A (en) * | 1996-12-18 | 1998-10-20 | Twenty-First Century Research Corporation | Methods of preparing an intermediate oxidation product from a hydrocarbon by utilizing an activated initiator |
| US6037491A (en) * | 1997-07-25 | 2000-03-14 | Rpc Inc. | Methods and devices for controlling hydrocarbon oxidations to respective acids by adjusting the solvent to hydrocarbon ratio |
| US5929277A (en) | 1997-09-19 | 1999-07-27 | Twenty-First Century Research Corporation | Methods of removing acetic acid from cyclohexane in the production of adipic acid |
| US5908589A (en) * | 1997-12-08 | 1999-06-01 | Twenty-First Century Research Corporation | Methods for separating catalyst from oxidation mixtures containing dibasic acids |
| CN1290244A (zh) | 1998-02-09 | 2001-04-04 | Rpc公司 | 处理在烃氧化成二元酸的混合物中的钴催化剂的方法 |
| BR9907998A (pt) * | 1998-02-19 | 2000-10-24 | Rpc Inc | Processos e dispositivos para a separação de catalisador de misturas de oxidação |
| US6433220B1 (en) | 1998-07-02 | 2002-08-13 | Rpc Inc. | Methods of extracting catalyst from a reaction mixture in the oxidation of cyclohexane to adipic acid |
| US6340420B1 (en) | 1998-07-06 | 2002-01-22 | Rpc Inc. | Methods of treating the oxidation mixture of hydrocarbons to respective dibasic acids |
| MXPA01010648A (es) | 1999-04-20 | 2002-06-04 | Rpc Inc | Metodos para el reemplazo de agua y ciclohexano con acido acetico en soluciones acuosas de catalizador. |
| SE526000C2 (sv) * | 2003-11-26 | 2005-06-14 | Kvaerner Pulping Tech | Metod och system för att styra tillsättning av syrgas och alkali vid syrgasdelignifiering |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3745065A (en) * | 1971-09-07 | 1973-07-10 | Cons Paper Inc | Control of chlorine dioxide bleaching |
| CA1002361A (en) * | 1973-01-03 | 1976-12-28 | James R. Prough | Digester control process and apparatus |
| US3832276A (en) * | 1973-03-07 | 1974-08-27 | Int Paper Co | Delignification and bleaching of a cellulose pulp slurry with oxygen |
| US4093511A (en) * | 1973-08-27 | 1978-06-06 | Kamyr Aktiebolag | Apparatus for oxygen bleaching of pulp including recirculation of exhaust gases |
| US3951733A (en) * | 1974-11-06 | 1976-04-20 | International Paper Company | Delignification and bleaching of wood pulp with oxygen |
| SE415580C (sv) * | 1977-05-11 | 1984-10-15 | Mo Och Domsjoe Ab | Forfarande for reglering av tillforseln av reaktionskemikalier vid delignifiering av cellulosamaterial |
| SU702087A1 (ru) * | 1977-07-11 | 1979-12-05 | Ленинградский Ордена Трудового Красного Знамени Технологический Институт Им. Ленсовета | Устройство дл измерени степени делигнификации целлюлозы в варочных котлах периодического действи |
| US4220498A (en) * | 1978-12-14 | 1980-09-02 | Kamyr, Inc. | Oxygen reactor systems pulp reject treatment |
| US4259150A (en) * | 1978-12-18 | 1981-03-31 | Kamyr Inc. | Plural stage mixing and thickening oxygen bleaching process |
| US4239590A (en) * | 1979-01-11 | 1980-12-16 | Kamyr, Inc. | Method of maintaining uniformity of fibrous material fed to a continuous digester |
-
1980
- 1980-08-26 SE SE8005959A patent/SE421019B/sv not_active IP Right Cessation
-
1981
- 1981-06-03 NO NO811871A patent/NO156535C/no unknown
- 1981-06-22 FI FI811942A patent/FI68870C/fi not_active IP Right Cessation
- 1981-06-22 FR FR8112195A patent/FR2489516A1/fr active Granted
- 1981-07-20 US US06/284,815 patent/US4419184A/en not_active Expired - Lifetime
- 1981-07-22 DE DE19813129010 patent/DE3129010A1/de not_active Ceased
- 1981-07-31 BR BR8104972A patent/BR8104972A/pt not_active IP Right Cessation
- 1981-08-18 CA CA000384073A patent/CA1170430A/en not_active Expired
- 1981-08-19 AT AT0362381A patent/AT375977B/de not_active IP Right Cessation
- 1981-08-26 JP JP56132645A patent/JPS5771486A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2489516A1 (fr) | 1982-03-05 |
| JPS6325118B2 (sv) | 1988-05-24 |
| CA1170430A (en) | 1984-07-10 |
| NO156535C (no) | 1987-10-07 |
| NO811871L (no) | 1982-03-01 |
| FI68870C (fi) | 1985-11-11 |
| NO156535B (no) | 1987-06-29 |
| AT375977B (de) | 1984-09-25 |
| FI811942L (fi) | 1982-02-27 |
| SE421019B (sv) | 1981-11-16 |
| FR2489516B1 (sv) | 1983-02-11 |
| US4419184A (en) | 1983-12-06 |
| DE3129010A1 (de) | 1982-05-13 |
| ATA362381A (de) | 1984-02-15 |
| BR8104972A (pt) | 1982-04-20 |
| JPS5771486A (en) | 1982-05-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed | ||
| MM | Patent lapsed |
Owner name: KAMYR AKTIEBOLAG |