CA2455172C - Feeding comminuted fibrous material using high pressure screw and centrifugal pumps - Google Patents
Feeding comminuted fibrous material using high pressure screw and centrifugal pumps Download PDFInfo
- Publication number
- CA2455172C CA2455172C CA2455172A CA2455172A CA2455172C CA 2455172 C CA2455172 C CA 2455172C CA 2455172 A CA2455172 A CA 2455172A CA 2455172 A CA2455172 A CA 2455172A CA 2455172 C CA2455172 C CA 2455172C
- Authority
- CA
- Canada
- Prior art keywords
- pump
- slurry
- pressure
- recited
- vessel
- 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 - Lifetime
Links
- 239000002657 fibrous material Substances 0.000 title claims abstract description 20
- 239000002002 slurry Substances 0.000 claims abstract description 101
- 239000007788 liquid Substances 0.000 claims description 59
- 239000000463 material Substances 0.000 claims description 28
- 238000010025 steaming Methods 0.000 claims description 27
- 239000007787 solid Substances 0.000 claims description 15
- 239000001913 cellulose Substances 0.000 claims description 12
- 229920002678 cellulose Polymers 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 32
- 238000000034 method Methods 0.000 abstract description 30
- 239000002023 wood Substances 0.000 abstract description 8
- 238000004537 pulping Methods 0.000 description 24
- 230000008569 process Effects 0.000 description 17
- 238000002955 isolation Methods 0.000 description 14
- 238000010411 cooking Methods 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 230000004087 circulation Effects 0.000 description 4
- 238000005470 impregnation Methods 0.000 description 4
- 239000002655 kraft paper Substances 0.000 description 4
- 230000003190 augmentative effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000011122 softwood Substances 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 2
- 150000004056 anthraquinones Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000005077 polysulfide Substances 0.000 description 2
- 229920001021 polysulfide Polymers 0.000 description 2
- 150000008117 polysulfides Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- -1 steam condensate Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 240000000797 Hibiscus cannabinus Species 0.000 description 1
- 241000209504 Poaceae Species 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000001594 aberrant effect Effects 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- VDQVEACBQKUUSU-UHFFFAOYSA-M disodium;sulfanide Chemical compound [Na+].[Na+].[SH-] VDQVEACBQKUUSU-UHFFFAOYSA-M 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000005406 washing 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
- D21C7/00—Digesters
- D21C7/06—Feeding devices
Landscapes
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/354,179 US6841042B2 (en) | 1996-10-25 | 2003-01-30 | Feeding comminuted fibrous material using high pressure screw and centrifugal pumps |
| US10/354,179 | 2003-01-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2455172A1 CA2455172A1 (en) | 2004-07-30 |
| CA2455172C true CA2455172C (en) | 2010-02-23 |
Family
ID=31715590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2455172A Expired - Lifetime CA2455172C (en) | 2003-01-30 | 2004-01-14 | Feeding comminuted fibrous material using high pressure screw and centrifugal pumps |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2004232184A (sv) |
| CA (1) | CA2455172C (sv) |
| SE (1) | SE0400169L (sv) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE528448C2 (sv) * | 2006-02-10 | 2006-11-14 | Kvaerner Pulping Tech | Förfarande för impregnering av flis i ett kontinuerligt kokerisystem |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0157279B1 (en) * | 1984-04-02 | 1988-08-10 | Kamyr, Inc. | Sawdust pumping, and processing |
| US5476572A (en) * | 1994-06-16 | 1995-12-19 | Kamyr, Inc. | Chip feeding for a continuous digester |
| US5622598A (en) * | 1995-04-25 | 1997-04-22 | Ahlstrom Machinery Inc. | Chip pumping to a digester |
| US5753075A (en) * | 1996-10-25 | 1998-05-19 | Stromberg; C. Bertil | Method and system for feeding comminuted fibrous material |
| CA2266987C (en) * | 1998-04-21 | 2004-02-10 | C. Bertil Stromberg | Method and system for feeding comminuted fibrous material |
| FI20010854A (sv) * | 2000-05-11 | 2001-11-12 | Andritz Ahlstrom Inc | Förfarande för behandling av cellulosahaltigt material |
| FI20010851A (sv) * | 2000-05-11 | 2001-11-12 | Andritz Ahlstrom Inc | Arrangemang och förfarande för inmatning av celllulosahaltigt material |
-
2004
- 2004-01-14 CA CA2455172A patent/CA2455172C/en not_active Expired - Lifetime
- 2004-01-22 JP JP2004013758A patent/JP2004232184A/ja active Pending
- 2004-01-30 SE SE0400169A patent/SE0400169L/sv not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004232184A (ja) | 2004-08-19 |
| CA2455172A1 (en) | 2004-07-30 |
| SE0400169D0 (sv) | 2004-01-30 |
| SE0400169L (sv) | 2004-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20240115 |