ES414474A1 - Metodo para reducir a pasta de papel maderas duras. - Google Patents
Metodo para reducir a pasta de papel maderas duras.Info
- Publication number
- ES414474A1 ES414474A1 ES414474A ES414474A ES414474A1 ES 414474 A1 ES414474 A1 ES 414474A1 ES 414474 A ES414474 A ES 414474A ES 414474 A ES414474 A ES 414474A ES 414474 A1 ES414474 A1 ES 414474A1
- Authority
- ES
- Spain
- Prior art keywords
- hardwoods
- pulp
- pulping process
- soften
- chips
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000004537 pulping Methods 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- 239000011121 hardwood Substances 0.000 abstract 2
- 229920001131 Pulp (paper) Polymers 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 238000010411 cooking Methods 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Rod-Shaped Construction Members (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25333172A | 1972-05-15 | 1972-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES414474A1 true ES414474A1 (es) | 1976-06-01 |
Family
ID=22959834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES414474A Expired ES414474A1 (es) | 1972-05-15 | 1973-05-07 | Metodo para reducir a pasta de papel maderas duras. |
Country Status (10)
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5249302A (en) * | 1975-10-16 | 1977-04-20 | Hitachi Shipbuilding Eng Co | Process for alkali pulping |
JPS5653295A (en) * | 1979-10-04 | 1981-05-12 | Kogyo Gijutsuin | Pulping method of waste rubber material |
US4559103A (en) * | 1982-08-05 | 1985-12-17 | Honshu Seishi Kabushiki Kaisha | Packaging paper and packaging material for packaging metallic material and method of producing the same |
DE3401072C2 (de) * | 1984-01-13 | 1986-04-10 | Nukem Gmbh, 6450 Hanau | Elektrodynamischer Wandlerkopf |
RU2091529C1 (ru) * | 1995-11-21 | 1997-09-27 | Грудинин Владимир Павлович | Способ приготовления варочного раствора для получения волокнистого полуфабриката |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE252411C (enrdf_load_stackoverflow) * | ||||
US1859846A (en) * | 1926-08-04 | 1932-05-24 | Arthur M Hyde | Wood pulp and process of making the same |
FR716303A (fr) * | 1930-09-04 | 1931-12-18 | Papeteries Navarre | Méthode d'extraction de la cellulose des végétaux et déchets industriels |
JPS4887101A (enrdf_load_stackoverflow) * | 1972-02-22 | 1973-11-16 | ||
GB1432245A (en) * | 1972-05-01 | 1976-04-14 | Westvaco Corp | Method of pulping wood |
-
1973
- 1973-04-11 FR FR7313157A patent/FR2184608B1/fr not_active Expired
- 1973-04-25 DE DE19732320812 patent/DE2320812C2/de not_active Expired
- 1973-05-07 ES ES414474A patent/ES414474A1/es not_active Expired
- 1973-05-11 GB GB2255173A patent/GB1425901A/en not_active Expired
- 1973-05-14 CA CA171,289A patent/CA990910A/en not_active Expired
- 1973-05-14 NO NO198873A patent/NO141951C/no unknown
- 1973-05-14 SE SE7306753A patent/SE404043B/xx unknown
- 1973-05-14 FI FI153573A patent/FI55363C/fi active
- 1973-05-14 BR BR350073A patent/BR7303500D0/pt unknown
- 1973-05-15 JP JP5320773A patent/JPS4947601A/ja active Pending
-
1980
- 1980-07-15 JP JP9577680A patent/JPS5643495A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS5643495A (en) | 1981-04-22 |
DE2320812C2 (de) | 1982-06-16 |
JPS4947601A (enrdf_load_stackoverflow) | 1974-05-08 |
FR2184608A1 (enrdf_load_stackoverflow) | 1973-12-28 |
AU5452873A (en) | 1974-10-17 |
FR2184608B1 (enrdf_load_stackoverflow) | 1975-04-04 |
NO141951B (no) | 1980-02-25 |
FI55363B (fi) | 1979-03-30 |
DE2320812A1 (de) | 1973-11-29 |
GB1425901A (en) | 1976-02-25 |
BR7303500D0 (pt) | 1974-07-18 |
SE404043B (sv) | 1978-09-18 |
FI55363C (fi) | 1979-07-10 |
NO141951C (no) | 1980-06-04 |
CA990910A (en) | 1976-06-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA964009A (en) | Process for bleaching cellulose pulp with alkali and oxygen gas utilizing waste bleaching liquor | |
FI52879C (fi) | Laite olennaisesti hetkellisen reaktion aikaansaamiseksi kuituisen sel luloosamassan ja kaasumaisen reagenssin välillä. | |
SE7608696L (sv) | Sett att framstella cellulosahaltiga massor i hogt utbyte och till lagkostnad | |
ES329936A1 (es) | Procedimiento para fabricar carton ondulado. | |
CA1007406A (en) | Process for producing cellulose pulp having a high brightness | |
KR890012887A (ko) | 활성탄의 제조방법 | |
ES414474A1 (es) | Metodo para reducir a pasta de papel maderas duras. | |
GB1064567A (en) | Method in the manufacture of chemo-mechanical pulps by heating and defibrating in a vapour atmosphere under pressure and at increased temperature of wood chips impregnated with sulphite solution | |
ES409498A1 (es) | Un metodo para la produccion de pasta de papel. | |
ES390676A1 (es) | Un metodo de fabricar tableros de fibras ligno-celulosicas. | |
AU475331B2 (en) | Paper, pulp and pulping process | |
AU462550B2 (en) | Paper pulp digester blowdown method | |
ES394982A1 (es) | Un metodo para la produccion de una pulpa kraft decolorada. | |
AU450309B2 (en) | Method for directly converting sodium carbonate into caustic soda and application of said method to pulp and paper industry | |
ES373159A1 (es) | Metodo de produccion de pulpa de elevados rendimientos y brillo para la fabricacion de papel. | |
CA990476A (en) | Method for directly converting sodium carbonate into caustic soda and application of said method to pulp and paper industry | |
GB523907A (en) | An improved process for obtaining tanning substances from sulphite cellulose waste liquors | |
SU580264A1 (ru) | Способ получени волокнистого целлюлозного полуфабриката | |
CA823568A (en) | Process for preparing cellulose pulp by alkaline digestion while inhibiting extraction of hemicellulose | |
ES384159A1 (es) | Metodo para preparar pulpa de papel. | |
CA901759A (en) | Lignocellulosic pulping process with aqueous sulfolane solutions | |
ES404493A1 (es) | Procedimiento y herramienta para practicar agujeros en una lamina pegada sobre un soporte perforado. | |
ES237244A1 (es) | Un procedimiento para la fabricaciën de pasta o pulpa de papel | |
ES383485A1 (es) | Procedimiento para la fabricacion de pasta celulosica. | |
CA841499A (en) | Method for producing an improved cellulose fiber pulp sheet |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 20100623 |