GB1416273A - Recovery of paper fibre from municipal refuse - Google Patents
Recovery of paper fibre from municipal refuseInfo
- Publication number
- GB1416273A GB1416273A GB658273A GB658273A GB1416273A GB 1416273 A GB1416273 A GB 1416273A GB 658273 A GB658273 A GB 658273A GB 658273 A GB658273 A GB 658273A GB 1416273 A GB1416273 A GB 1416273A
- Authority
- GB
- United Kingdom
- Prior art keywords
- line
- slurry
- fibres
- centrifugal
- materials
- 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
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
- B03B9/061—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse the refuse being industrial
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Processing Of Solid Wastes (AREA)
- Physical Water Treatments (AREA)
- Cyclones (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
1416273 Wet separating BLACK CLAWSON FIBRECLAIM INC 9 Feb 1973 [9 Feb 1972] 6582/73 Heading B2H [Also in Divisions Dl and D2] In the recovery of papermaking fibres from refuse, these fibres are required to be separated from "light contaminant materials" i.e. organic materials which have specific gravities similar to that of the fibres or which have higher specific gravities but behave hydrodynamically as if their specific gravities were less than their real value and the maximum particle size of which does not exceed the size of the largest paper fibre. Examples of such contaminants are animal, vegetable or mineral grease or wax, vegetable and meat particles, hair, synthetic fibres, vegetation residue such as grass clippings and fragments of leaves. The separation is achieved by (a) forming from the refuse an aqueous slurry the solid constituents of which are mainly the contaminated paper fibres (b) pumping the slurry into a centrifugal flotation unit (comprising a truncated conical vessel having its base uppermost and its apex directed downwardly) through an inlet port adjacent its base (c) maintaining the supply to the inlet port sufficiently high to develop in the vessel centrifugal force conditions to cause vertical separation of the slurry into an outer fraction containing the majority of the paper fibres and an inner fraction containing the majority of the light contaminate materials and (d) maintaining the discharge flow through outlet ports (one each in the vessel base and apex) in a predetermined relation such that the two fractions are discharged separately through the outlet ports, Step (b) may be preceded by a refining treatment to loosen grease from the paper fibres and/or a treatment wherein dissolved air is mixed in the slurry. In the system represented by Fig. 1, solid waste materials are fed by a conveyor 12 into a treatment tub 10 whence relatively infrangible materials are extracted by a junk remover 13 through which an aqueous medium such as water is fed into tub 10 from a line 14. A rotor 15 subjects the waste to violent hydraulic and mechanical shear forces to reduce the frangible content to predetermined particle size for extraction through a perforated bed plate 16. A slurry containing the reduced particles is pumped at 19 through line 18 to centrifugal cleaner 20 through the apex of which most of the gritty inorganics are removed at 22. The remainder of the slurry passes through line 24 into coarse screening apparatus 25 accepts from which pass through line 27 to a fine screen 30 thence by pump 31 to a centrifugal cleaner 33. Accepted stock from the latter passes through a pump 39 to another centrifugal cleaner 40 accepts from which are delivered by a line 41 to an inclined screen fines remover 42. Rejects pass, as through lines 26, 34, 36, 43 to a disposal line 35. The accepted stock from remover 42, containing solids consisting of the paper fibre and light contaminant materials, is delivered by pump 44 through line 45 to a centrifugal flotation unit 50 provided with inlet port 51 and outlet ports 52 and 53 through which, as a result of conditions obtained by proportioning the ports and controlling the feed and pressure, the outer (accepts) and inner (rejects) fractions are discharged and may pass through a line 57 to stations 60, 61, 62, representing an additional supply pump and cleaner, a digester and a final stage of washing and dewatering apparatus, and to a pyrolysis or hydrogenation station 70. In specific modifications, one or both screens 25 and 30 is/are replaced by a centrifugal flotation unit in order to eliminate particles which tend to behave hydrodynamically like paper fibres; a further treatment stattion (65) is provided between fines remover 42 and flotation unit 50, Fig. 2 (not shown); air is injected into the slurry ahead of unit 50, Fig. 3 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22481572A | 1972-02-09 | 1972-02-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1416273A true GB1416273A (en) | 1975-12-03 |
Family
ID=22842329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB658273A Expired GB1416273A (en) | 1972-02-09 | 1973-02-09 | Recovery of paper fibre from municipal refuse |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS59262B2 (en) |
CA (1) | CA966087A (en) |
DE (1) | DE2305408A1 (en) |
FI (1) | FI59036C (en) |
FR (1) | FR2171292B1 (en) |
GB (1) | GB1416273A (en) |
IT (1) | IT977242B (en) |
NL (1) | NL7301784A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8617281B2 (en) | 2007-08-13 | 2013-12-31 | Applied Cleantech, Inc | Methods and systems for feedstock production from sewage and product manufacturing therefrom |
US9169597B2 (en) | 2005-03-10 | 2015-10-27 | Applied Cleantech Inc. | Method of recycling fibers from sewage sludge and means thereof |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL158565B (en) * | 1974-03-15 | 1978-11-15 | Tno | METHOD AND ESTABLISHMENT FOR PROCESSED RECOVERY OF PAPER FIBERS FROM PAPER-CONTAINING HOUSEHOLD OR INDUSTRIAL WASTE. |
CS201120B1 (en) * | 1976-07-27 | 1980-10-31 | Svetozar Vagac | Method of and apparatus for reclaiming individual components of papermaking combined waste materials |
JPH01245890A (en) * | 1988-03-25 | 1989-10-02 | Nousan Giken:Kk | Method and plant for treatment of high moisture content agricultural waste |
JP2662438B2 (en) * | 1989-03-30 | 1997-10-15 | 三菱製紙株式会社 | Recycling method of polyolefin resin coated paper as support for photographic printing paper |
NZ247276A (en) * | 1992-04-06 | 1994-12-22 | Westvaco Corp | Production of papermaking fibre of low lignin content from recycled high lignin waste paper; mixtures with fresh pulp and products produced therefrom |
US5390860A (en) * | 1992-05-15 | 1995-02-21 | Tetra Laval Holdings & Finance Sa | Method and apparatus for separating paper fiber and plastics from mixed waste materials and products obtained thereby |
GB9425666D0 (en) * | 1994-12-20 | 1995-02-22 | Knowaste Tech Inc | Recycling of coated paperboard |
GB9425665D0 (en) * | 1994-12-20 | 1995-02-22 | Knowaste Tech Inc | Separation of cellulosic and non-cellulosic fractions from paper products |
CN108505382A (en) * | 2018-01-31 | 2018-09-07 | 合肥银山棉麻股份有限公司 | Tail pulp recovery goal method |
SE543048C2 (en) * | 2018-12-19 | 2020-09-29 | Re Newcell Ab | A method for separating cellulosic fibers from non-cellulosic fibers |
CN111437982B (en) * | 2020-04-08 | 2021-08-10 | 云南磷化集团有限公司 | Method for reducing fine ratio of sand setting to mineral grinding and grading capacity |
CN115121382A (en) * | 2022-05-06 | 2022-09-30 | 浙江上方生物科技有限公司 | Impurity removing device for natural seaweed microcrystalline cellulose |
-
1973
- 1973-01-30 CA CA162,364A patent/CA966087A/en not_active Expired
- 1973-02-02 FI FI322/73A patent/FI59036C/en active
- 1973-02-03 DE DE2305408A patent/DE2305408A1/en not_active Ceased
- 1973-02-07 IT IT4811373A patent/IT977242B/en active
- 1973-02-08 NL NL7301784A patent/NL7301784A/xx unknown
- 1973-02-08 FR FR7304467A patent/FR2171292B1/fr not_active Expired
- 1973-02-08 JP JP48015214A patent/JPS59262B2/en not_active Expired
- 1973-02-09 GB GB658273A patent/GB1416273A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9169597B2 (en) | 2005-03-10 | 2015-10-27 | Applied Cleantech Inc. | Method of recycling fibers from sewage sludge and means thereof |
US8617281B2 (en) | 2007-08-13 | 2013-12-31 | Applied Cleantech, Inc | Methods and systems for feedstock production from sewage and product manufacturing therefrom |
Also Published As
Publication number | Publication date |
---|---|
FR2171292B1 (en) | 1977-02-04 |
IT977242B (en) | 1974-09-10 |
JPS4887105A (en) | 1973-11-16 |
CA966087A (en) | 1975-04-15 |
FI59036C (en) | 1981-06-10 |
NL7301784A (en) | 1973-08-13 |
FI59036B (en) | 1981-02-27 |
JPS59262B2 (en) | 1984-01-06 |
DE2305408A1 (en) | 1973-08-23 |
FR2171292A1 (en) | 1973-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |