GB1452615A - Method of pulping wood with oxygen - Google Patents
Method of pulping wood with oxygenInfo
- Publication number
- GB1452615A GB1452615A GB5002573A GB5002573A GB1452615A GB 1452615 A GB1452615 A GB 1452615A GB 5002573 A GB5002573 A GB 5002573A GB 5002573 A GB5002573 A GB 5002573A GB 1452615 A GB1452615 A GB 1452615A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- oxygen
- digestion
- deactivation
- withdrawn
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 6
- 229910052760 oxygen Inorganic materials 0.000 title abstract 6
- 239000001301 oxygen Substances 0.000 title abstract 6
- 238000004537 pulping Methods 0.000 title abstract 4
- 239000002023 wood Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 3
- 239000007788 liquid Substances 0.000 abstract 8
- 230000029087 digestion Effects 0.000 abstract 6
- 230000009849 deactivation Effects 0.000 abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000007800 oxidant agent Substances 0.000 abstract 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 abstract 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 abstract 1
- 150000001720 carbohydrates Chemical class 0.000 abstract 1
- 235000014633 carbohydrates Nutrition 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 230000001678 irradiating effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 150000002978 peroxides Chemical class 0.000 abstract 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye
-
- 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
- D21C3/026—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of O2, e.g. air
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7213937A SE377142B (enrdf_load_stackoverflow) | 1972-10-27 | 1972-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1452615A true GB1452615A (en) | 1976-10-13 |
Family
ID=20298266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5002573A Expired GB1452615A (en) | 1972-10-27 | 1973-10-26 | Method of pulping wood with oxygen |
Country Status (12)
-
1972
- 1972-10-27 SE SE7213937A patent/SE377142B/xx unknown
-
1973
- 1973-10-12 ZA ZA737950*A patent/ZA737950B/xx unknown
- 1973-10-19 JP JP48117682A patent/JPS5120603B2/ja not_active Expired
- 1973-10-19 FI FI3259/73A patent/FI55062C/fi active
- 1973-10-22 DE DE19732352857 patent/DE2352857B2/de active Granted
- 1973-10-24 CH CH1499273A patent/CH587961A5/xx not_active IP Right Cessation
- 1973-10-25 IT IT70159/73A patent/IT999682B/it active
- 1973-10-25 AT AT908473A patent/AT330569B/de not_active IP Right Cessation
- 1973-10-26 GB GB5002573A patent/GB1452615A/en not_active Expired
- 1973-10-26 FR FR7338280A patent/FR2204736B1/fr not_active Expired
- 1973-10-26 BR BR8391/73A patent/BR7308391D0/pt unknown
- 1973-10-29 CA CA184,567A patent/CA982378A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA982378A (en) | 1976-01-27 |
| BR7308391D0 (pt) | 1974-09-05 |
| IT999682B (it) | 1976-03-10 |
| ATA908473A (de) | 1975-09-15 |
| JPS4975803A (enrdf_load_stackoverflow) | 1974-07-22 |
| DE2352857A1 (de) | 1974-05-16 |
| CH587961A5 (enrdf_load_stackoverflow) | 1977-05-31 |
| SE377142B (enrdf_load_stackoverflow) | 1975-06-23 |
| AT330569B (de) | 1976-07-12 |
| FI55062C (fi) | 1979-05-10 |
| FI55062B (fi) | 1979-01-31 |
| FR2204736B1 (enrdf_load_stackoverflow) | 1976-05-07 |
| JPS5120603B2 (enrdf_load_stackoverflow) | 1976-06-26 |
| DE2352857B2 (de) | 1976-04-29 |
| ZA737950B (en) | 1974-08-28 |
| FR2204736A1 (enrdf_load_stackoverflow) | 1974-05-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |