• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The continuous treatment of a cellulosic material in the form of chips to produce at least partial delignification of the material without true mechanical grinding is effected in apparatus comprising two parallel meshing screws which are rotated in the same direction in a sheath and have identical threads providing a plurality of zones of different pitch. The material is passed in succession through a first zone for feeding the material downstream, a first braking zone for causing a first compression of the material, a second zone for feeding the material downstream and in which the material is brought into contact with a reagent, e.g. steam or a chemical reagent, and a second braking zone for causing a second compression of the material. In each compression stage the material is subject to alternate increases and decreases in pressure, the first compression stage causing the expulsion of any water present in the material and the second compression stage causing the expulsion of any spent reagent and residual liquors in the material.
    公开号:SU856392A3
    申请号:SU792732196
    申请日:1979-02-15
    公开日:1981-08-15
    发明作者:Берже Пьер
    申请人:Крезо-Луар (Фирма)；
    IPC主号:
    专利说明:

    (54) CONTINUOUS TREATMENT DEVICE
    The Lignocellulose Fiber Strain The invention relates to a device for the continuous processing of chips of lignocellulosic fibrous material and is intended for use in the pulp and paper industry. A device for continuous processing of chips of lignocellulosic fibrous material is known, comprising a housing with a nozzle for feeding chips for processing located in a housing in the upper clean, a nozzle for withdrawing treated chips located in the lower part of the housing, and a nozzle for feeding the reagent installed in the housing two parallel shaft with identical helical surfaces of different pitch, in contact with each other with the formation of a zone of movement of chips, a zone of inhibition and a zone with a reverse step with rolls, the spiral surfaces of which have windows for advancing the treated jet and driving the shafts in one direction fl. However, this device does not provide sufficient stability of the processing mode. MATERIALS The purpose of the invention is to ensure the stability of the processing mode and preserve the quality of the material. This goal is achieved by the fact that in a device for continuous processing of chips of lignocellulosic fibrous material, comprising a housing with a nozzle for feeding chips for processing located in the upper part of the housing, a nozzle for withdrawing the Treated chips located in the lower part of the housing, and a nozzle for feeding reagent, installed in the housing two parallel shafts with identical spiral surfaces of different pitch, in contact with each other with the formation of a zone of movement of chips, braking zone and with reverse compression pitch, whose screw-shaped surfaces have windows for advancing the treated shavings, and driving the shaft in one direction, the windows on the screw-shaped surface of the zone with reverse compression pitch are made in the form of radially located cutouts extending from the shaft surface to the edge of its screw-shaped surface , and have a width of between one third and one half of the average.
    the length of the chip, and the zone with the inverse step of compression has a length equal to from 1 to 3 steps of the helical surface.
    FIG. 1 shows the device, a general side view and a section of FIG. 2 - the same, top view; in fig. 3 — device, longitudinal section; in fig. 4 - processing zones, top view; in fig. 5,6,7 - various phases of the process of processing, cuts VB, VB and GG in FIG. 4, respectively.
    The device includes a housing 1 and two inside rotating in one direction parallel shaft 2 with identical helical surfaces of different pitch. The housing 1 has a nozzle 3 for feeding chips for processing located in its upper part, a nozzle 4 for withdrawing treated chips located B of the lower part of the housing, a nozzle 5 for feeding reagent. The device has a chip advance zone 6, ending with a braking zone, after which follows zone 7 with the reverse step of squeezing. Its spiral surfaces have windows 8 for advancing the treated shavings, made in the form of radially located notches extending from the surface of the halls to the edge of their helical surface. rhnosti
    After the first zone 7 with a reverse step of compression, there is a zone 9 for processing the raw material with a reagent. Shafts 2, when interacting with their helical surfaces, have a clutch sector 10, a pressure drop area 11 and a pressure decrease area 12. The second zone 3 with the reverse step of compression is next to the treatment zone 9. For the removal of the reagent is the hole 14,
    The device works as follows.
    Through the pipe 3 chips are served in the housing 1 for processing. Getting into zone 6 first, it is entrained by the helical surface of the shafts 2 and is directed to zone 7 with the inverse step of compression. In zone 7, the inverse step of the screwed surface provides braking of the raw material, which is compacted and compressed, filling the turns and forming something like a cork. The raw material entering zone 7 tends to get out of it, since the helical surface in it is made with an inverse step. The dimensions of the zones and the pitch are chosen in such a way that the force pushing the raw material prevails, but at the end of zone 6, however, MiSHee forms a braking zone cfifpbH. To facilitate the advancement of the raw material, windows 8 are made on the screw-shaped surface of the compression zone 7. As the pressure increases, a portion of the raw material passes through these windows to the next turn.
    The choice of a specific window width makes it possible to control the conditions for moving the raw materials inside the device and, therefore, the degree of compression of the raw materials. Passing zone 7, the raw material enters the treatment zone, enclosed between two zones of inverse compression step 7 and 13, into which the reagent and / or steam is injected under pressure through pipe 5 to dissolve the lignin. Here is part of the raw material due to
    0 rotation of the shafts is entrained in a rotational movement around the shaft, namely, 70% of the raw material moves in the device parallel to the shafts, and 30% of the raw material rotates. As a result, a part of the raw material that is entrained in rotation accumulates in front of the clutch sector 10 j a. This sector is followed by a pressure drop in region 11 and a decrease in pressure 3 in region 12. At
     the approach of the raw material to the zone 13 with the inverse step of compression, the pressure gradually increases, and the speed of the longitudinal movement of the raw material decreases, resulting in the majority of the raw material
    5 is rotated around the shafts. The chips supplied to the device through the nozzle 3 are exposed in the zone ъ to a similar effect on the turns of the shafts 2p. As a result, part of the water
    0 (chips contain about 55% water) is removed and its content in chips is about 40%. Such a preliminary release of water contributes significantly to the impregnation of the reagent
    in processing zone 9. The chips are soaked with reagent, the passage area 12, and releases the reagent together with the dissolved lignin through the holes 14, the passage of the clutch sector 10;. Passing zone 13 with the reverse compression step, the processed raw material is withdrawn from the device through nozzle 4.
    Thus, the chips processed in the device 45 are not subjected to splitting, but experience only a compressive force, are effectively treated with a reagent that removes lignin from it, and 50 provides a stable processing mode and preserves the quality of the material.
    权利要求:
    Claims (1)
    [1]
    1. The patent of France No. 738520, cl. O 21 V 1/22, 1975.
    类似技术:
    公开号 | 公开日 | 专利标题
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    GB2090954A|1982-07-21|Method of and apparatus for drying wood
    同族专利:
    公开号 | 公开日
    DE2905443A1|1979-09-06|
    FR2418295B1|1982-11-19|
    IT7967277D0|1979-02-08|
    US4214947A|1980-07-29|
    ES481284A1|1980-01-16|
    AU532183B2|1983-09-22|
    FR2418295A1|1979-09-21|
    DE2905443C2|1982-06-24|
    BR7901090A|1979-09-11|
    AU4406179A|1979-09-06|
    NO150050B|1984-04-30|
    FI67887C|1985-06-10|
    AT369055B|1982-12-10|
    DK155126B|1989-02-13|
    FI67887B|1985-02-28|
    NO150050C|1984-08-08|
    CA1114663A|1981-12-22|
    DK155126C|1989-07-03|
    SE7901549L|1979-08-28|
    ATA137279A|1982-04-15|
    DK41679A|1979-08-28|
    FI790590A|1979-08-28|
    NZ189614A|1982-09-14|
    NO790314L|1979-08-28|
    JPS54125702A|1979-09-29|
    ES477297A1|1979-11-16|
    IT1119269B|1986-03-10|
    引用文献:
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    DE592523C|1930-05-28|1934-02-08|Maschb Werkstaette Niefern G M|Pulp mill for the aftertreatment of dissolving substances and for comminuting wood pulp, cellulose and the like. like|
    US2943012A|1955-12-01|1960-06-28|Int Basic Economy Corp|Method and apparatus for fiberizing fibrous material|
    GB808854A|1956-03-21|1959-02-11|Walter Philip Williams|Pulping and refining|
    US3064908A|1957-07-02|1962-11-20|Color & Sjogren Ab|Apparatus for mixing and working material|
    US3085623A|1960-09-15|1963-04-16|Bauer Bros Co|Impregnator|
    SE333095B|1967-04-21|1971-03-01|Calor & Sjoegren Ab|
    FR2319737B1|1975-07-31|1980-04-04|Creusot Loire|DE2906528A1|1979-02-20|1980-09-04|Sueddeutsche Zucker Ag|METHOD FOR THE PRODUCTION OF BEET CHIPS OF HIGH DRY SUBSTANCE|
    US4363671A|1980-03-18|1982-12-14|New York University|Apparatus for chemical conversion of materials|
    US4368079A|1980-03-18|1983-01-11|New York University|Apparatus for chemical conversion of materials and particularly the conversion of cellulose waste to glucose|
    US4316747A|1980-03-18|1982-02-23|New York University|Process for the chemical conversion of cellulose waste to glucose|
    US4316748A|1980-03-18|1982-02-23|New York University|Process for the acid hydrolysis of waste cellulose to glucose|
    SE447737B|1983-11-30|1986-12-08|Frotator Ab|DEVICE FOR TREATING CELLULOSMASS WITH A CONSISTENCY ABOVE THE FLOWABILITY LIMIT WITH FEED PROMOTING BODY BETWEEN PROCESSING DISC|
    SE440247B|1983-11-30|1985-07-22|Folke Eriksson|DEVICE FOR CELLULOSAMASSA TREATMENT WITH A CONCENTRATION ABOVE THE FLATABILITY LIMIT|
    SE447738B|1983-11-30|1986-12-08|Frotator Ab|DEVICE FOR CELLULO SAMSON TREATMENT WITH A CONSISTENCY ABOUT THE FLATABILITY LIMIT WITH TRANSPORT SCREW FOR A WORKING ZONE|
    US4632729A|1984-05-01|1986-12-30|Laakso Oliver A|Chip presteaming and air washing|
    SE451441B|1984-05-16|1987-10-12|Jochnick & Norrman Press Ab|MACHINE FOR PROCESSING AN ELASTOMER PRODUCT|
    US4897155A|1987-05-27|1990-01-30|Kamyr, Inc.|Method for producing low fines content pulp by subjecting cellulosic chips to low frequency compression-relaxation cycles|
    FR2618811B1|1987-07-31|1990-06-22|Centre Tech Ind Papier|PROCESS FOR THE MANUFACTURE OF BLEACHED CHEMICOMECHANICAL OR CHEMICOTHERMO-MECHANICAL PASTES|
    US4997488A|1988-02-05|1991-03-05|The United States Of America As Represented By The Secretary Of Agriculture|Combined physical and chemical treatment to improve lignocellulose digestibility|
    FR2626905A1|1988-02-05|1989-08-11|Beghin Say Sa|PROCESS FOR DEFIBRING A LIGNOCELLULOSIC MATERIAL|
    AU620378B2|1988-02-05|1992-02-20|Beghin-Say|Process for removing the fibre from a lignocellulose material|
    US4842877A|1988-04-05|1989-06-27|Xylan, Inc.|Delignification of non-woody biomass|
    US5023097A|1988-04-05|1991-06-11|Xylan, Inc.|Delignification of non-woody biomass|
    WO1990010527A1|1989-03-10|1990-09-20|Wenger Manufacturing, Inc.|Method and apparatus for extrusion processing of wood products and fibrous materials|
    JP2594526B2|1992-12-22|1997-03-26|カゴメ株式会社|Biaxially-different rotating extruder for juice|
    AT398991B|1993-05-24|1995-02-27|Andritz Patentverwaltung|MIXERS, IN PARTICULAR HIGH-PERFORMANCE MIXERS FOR REFINING PRE-CRUSHED SUBSTANCES|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7805495A|FR2418295B1|1978-02-27|1978-02-27|
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