• 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:
    A horizontal, Fourdrinier foraminous belt type, countercurrent, high-capacity, cellulose pulp washer is described. The described washer is equipped with a hood positioned over a portion of the belt and over vacuum boxes or receptacles under the upper loop of the belt. The gases and vapors drawn into the vacuum boxes or receptacles with the wash liquid are separated from the liquid in the receptacles and recycled to the hood to control the atmosphere in the hood and maintain the desired pressure differential for operation of the washer.
    公开号:SU1071231A3
    申请号:SU792731703
    申请日:1979-02-27
    公开日:1984-01-30
    发明作者:О.Эрикссон Эрик
    申请人:Джорджия-Пасифик Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to devices for washing a suspension of cellulose and is intended for use in the pulp and paper industry. A device is known for pulling out a suspension of cellulose, including a perforated conveyor belt mounted on rollers that can rotate at a variable speed and form an upper horizontal section of the span, a bunker. , fixed above the conveyor belt at one end of the span, to distribute the pulp suspension across the width of the belt, means for feeding and washing liquid located above the belt across the direction of its movement at a distance from one another, mounted horizontally under the upper part of the span adjacent to one another, collections of filtrate, each made with a flat top, provided with openings for receiving the filtrate from the underside of the conveyor tapes recirculate the filtrate from the bottom of the subsequent collector to the washing liquid supply means of the previous collector flj. However, the known device does not provide high efficiency of wiring and does not prevent gas pollution of the room. The purpose of the invention is to increase the efficiency of washing and to prevent pollution of the room. The goal is achieved in that a pulping cell washing device, including a perforated conveyor belt, mounted on variable rollers mounted for rotation at variable speed and forming an upper horizontal span of the span, a hopper fixed above the conveyor belt at one end of the span section for distribution cellulose suspensions across the width of the tape, means for supplying the washing liquid, placed by the tape across the direction of its movement at a distance i one from the other Goy, mounted horizontally under the upper part of the roll, adjacent to each other are collections of filtrate, each made with a flat top, provided with holes for storage of filtrate on the lower side of the conveyor belt, a system for recycling the filtrate from the bottom of the subsequent collection to the feeding device of the conveyor liquid of the previous collection, has a ventilated hermetic cap, equipped with fans, covering the upper part of the span of the conveyor belt, and filtrate collectors with recirculation system each collector of the filtrate is provided with a means for removing gases and vapors from the filtrate from the upper part of the collector, the latter being connected to the suction inlet of a suitable fan, the discharge nozzle of which has an outlet into the cap, and the filtrate collectors are located across the conveyor belt and have a length exceeding the width of the conveyor belt. Moreover, the device has two hydraulic shutter, made in the form of a container filled with liquid, one of which is installed under the tape of the upper horizontal section of the span at the tape entrance to the inside of the hood directly at the bunker, and the other above the tape of the upper horizontal section of the passage at the tape exit from the cover. The cap has vertical partitions dividing it into separate sections according to the number of means for supplying the washing liquid. The means for removing gases and vapors from the filtrate is provided with a horizontal baffle installed in the collector. Fig, 1i is a diagram of the proposed device; in fig. 2 a device for washing the pulp, side view; in fig. 3 shows section A-A in FIG. 2; in fig. 4 - flat top collections, top view; in fig. 5 the section in FIG. four; in fig. b connection (docking) of receivers with each other; in fig. 7 - exhaust box. cross section. The device contains a perforated tape, J., for example, a grid of long-grid paper-making machine mounted on drive rollers 2, driven by means of variable speed (not shown) with adjustable speed and end roller 3. And passing over a large number of flat top filtrate collections 4 equipped with openings for receiving the filtrate, covered with a ventilated removable cap 5, having three sections 6-8, divided by partitions 9 and 10. Section 8 b above the grid hopper 11 at the inlet end the hood and the exhaust box 12, and the partition 9 between sections 6 and 7 is the exhaust box 13. Section 7 houses the exhaust box 14 / a between sections 7 and 8 near the partition 10.- the exhaust box 15. Section 8 houses the outlet. 16. If necessary, the cellulose is again transformed into a suspension for further processing, a container of hydraulic shutter 18 is installed from the cap at its exit 17, from which a continuous strip (curtain) of the liquid is poured onto the tape, out of the cap, forming a hydraulic the shutter between the tape and the exit cap 17. However, to obtain a high concentration of pulp, the gate valve 18 is not installed, but other means of compaction are used, for example, pressure rollers, which, in addition to the compaction function, provide additional dewatering of the pulp. Eight flat-top collections are combined with section b, of which the first two 19 and 20 are used for the initial removal of the spent cooking liquor from the pulp slurry after it is distributed over the grid. The spent cooking liquor from these receivers is collected in a surge tank; 21 through conduit 22. The collectors 23 to 25 are used to remove the spent cooking liquor, and the collectors 26 to 28 are used to remove the washing liquid released from the outlet box 13 from cellulose. 13 Collection 23 to 25 ti three collectors to remove the washing liquid produced by the box 12 , connected to each other by means of a collector 2B, attached to the bottom of each of the collectors and connected to the pump 30 by a pipe 31. Eight collections with a flat top communicating with the cap b of the cap, are connected to one another by a gas collector 32, fastened each of them is located at the top of the location of the gas outlet, which provides suction of gases and vapors from the collector through the Manifold, pipe 33 and separator 34 to separate trapped liquid before gases and vapors enter the suction pipe of the fan 35 for recirculation to section b through the pipe 36.:. A cyclone separator or any other type of separator may be used to separate gases and liquids. In section 7, three receivers are used to remove the washing liquid from the pulp that is poured from the exhaust boxes 13 and 14. The collections,. the suction flushing liquid from the outlet box 13 is mutually connected to each other by means of a manifold 37 connected to the pump 38 by a pipe 39. The washing liquid exhausted from the outlet 14 is removed by means of three collectors connected to one another by means of a liquid collector 40; It is jipro-driven, pump 41 via conduit 42. DIecTb collectors communicating with hood section 7 are interconnected with another gas collector 43, which is connected via conduit 44 to separator 45 for separating liquids and gases and to fan 46. The vapors and gases from the sumps are withdrawn by the fan 46 through conduit 44 and sent back to section 7. Similarly, in section 8, three sumps are used for each drawer to remove the wash liquid discharged from exhaust boxes 15 and 16. Reservoirs that remove the wash liquid dispensed by the box 15 are connected to a fluid collector 47 connected to the pump 48 via a pipe 49. The wash liquid dispensed by the drawer 16 is removed by means of three collectors interconnected. which is connected to the pump 51 by the pipeline 52, and is directed to the discharge box 15. As in the other sections, the collectors. communicating with section 8 are connected from above to one another by a gas collector 53, through which gas, gas, and pairs of six collections They can be sucked out through the conduit 54 and the separator 55 to separate the liquid from them before they are sent back to the section through the pipe evacuator 56. The device is also equipped with a flooding pitch or a hydraulic shutter 57 installed under the tape with pipelines 58-60 of spent cooking liquor and horizontal baffles 61. When the washer is operating, a suspension of cellulose from the digester containing 1-8% cellulose in the spent cooking solution is loaded into the pressure hopper 11 through a pipe od. The pulp concentration in the suspension from the boiling boiler is above 8%, so it can be diluted by adding the spent cooking liquor or a mixture of the used cooking liquor and the washing liquid withdrawn from the washer. From the bunker, the suspension is evenly distributed between the chutes (restrictive bars) on the belt 1, driven by the drive rollers 2, at a speed of 3–91 m / min and the end roller 3 is covered. Pass the end roller, tape (wire mesh) before as it enters, the hood passes over the flooded drawer 57, where the net is flooded with spent cooking liquor or concentrated washing liquid, which act as an airtight seal and displacing the air, behind the mesh. The flooding of the net and the uniform loading of cellulose suspensions on it create an effective air-tight seal: And the amount of air entering under the hood can be reduced to a minimum. inlet grid. When the suspension is loaded onto a moving mesh, some of the cellulose fibers pass through it until a web of cellulose fibers is formed on it. Therefore, the originally obtained spent cooking liquor, containing some amount of cellulose fibers, is sucked in by the collectors 19 and 20 and sent to a surge tank 21, from which the pump is pumped through pipe 58 for reuse. The solution is mixed with the suspension from the digester with a suspension in order to dilute it to obtain the required concentration for supply to the apparatus. In addition, part of the spent cooking liquor will be directed along. pipe 59 to hydraulic valve box 57, from where the valve poured over the edge is returned to pipe 22 through pipe 60. In order to maintain a sufficient supply of liquid to the cutter tank 21, it is also possible to add waste cooking liquor, solution and concentrated washing liquid from the collector 29. Remaining the initial use in collections 19 and 20, part of the spent cooking liquor sucks collections 2j3 - 25 when the suspension passes through the grid and on their upper surfaces. of dissociated spent cooking liquor from the pulp by .luchagot web extending further under schikom outlet 12 where it is filled with a washing liquid, which is removed by passing the web over the collections 26 - 28. The cap section b. The pulp, from which the concentrated washing liquid is removed, passes further n to the cap section 7, where it is flooded with liquid from the exhaust boxes 13 and 14. After each flooding, the washing liquid from the pulp is removed by passing the pulp over the collections from the FLAT top. When entering the section, the cellulose on the screen is flooded with washing fluid from the discharge box-15, after which it is dehydrated, the fluid is removed and re-filled with washing fluid from the discharge drawer 16, and then dehydrated again before flooding the hydraulic lock box 18. from "under the hood. After leaving the cap, the pulp with water or washing liquid is discharged for further processing. The fluid used for washing the pulp may be water or an effluent stream, such as recycled water from a sorting, bleaching or papermaking machine, or some other fluid flow. The proposed device for washing the suspension of cellulose provides high washing efficiency and eliminates / pollutes, places -.
    3f
    权利要求:
    Claims (4)
    [1]
    In addition, with the aim of increasing the efficiency of washing and preventing gas contamination of the room, it has a ventilated sealed cap equipped with fans that covers the upper section of the passage of the conveyor belt, and collectors of the filtrate with its recirculation system, reason 0 each filtrate collector is equipped with: means for removing gases and vapors from the filtrate from the upper part of the collector, the latter being connected to the suction pipe of the corresponding fan, the discharge pipe of which has t is the outlet to the hood, and the filtrate collectors are located across the conveyor belt and have a length exceeding the width of the conveyor belt.
    [2]
    2. The device according to π. 1, characterized in that it has two hydraulic shutters made in the form of a container filled with liquid, one of which is installed under the tape of the upper horizontal section of the span at the inlet of the tape inside the hood directly at the hopper, and the other above the tape of the upper G of the horizontal section of the span jia the outlet of the tape from the cap.
    [3]
    3. The device according to claim 1, characterized in that the cap has vertical partitions · dividing it into separate sections according to the number of means for supplying the washing liquid. ·
    [4]
    4. The device according to claim 1, wherein the means for removing gases and vapors from the filtrate is provided with a horizontal reflective partition installed in the collector.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1071231A3|1984-01-30|Apparatus for washing cellulose slurry
    US2802543A|1957-08-13|Apparatus for treating smoke and gases
    FI81136B|1990-05-31|FOERFARANDE OCH ANORDNING FOER BEHANDLING AV MASSA.
    US4056473A|1977-11-01|Rotary filter for concentrating fiber suspensions
    US5567278A|1996-10-22|Process and apparatus for circulating backwater in a papermaking machine
    US5389207A|1995-02-14|Apparatus for controlling the dewatering of a web in a fourdrinier fabric
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    KR860001604B1|1986-10-13|Continuous counterflow belt washer
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    US20210238803A1|2021-08-05|Pulp Washer Mist Eliminator and Foam Remover System
    US2689653A|1954-09-21|Suction drum strainer
    CA1111297A|1981-10-27|Twin belt vacuum washer
    SU1498840A1|1989-08-07|Apparatus for aspiration of fibrous aerosols
    JPH0748716Y2|1995-11-08|Separation and collection device
    同族专利:
    公开号 | 公开日
    FR2418296B1|1983-11-04|
    BE902439Q|1985-09-02|
    SE466503B|1992-02-24|
    AT376718B|1984-12-27|
    GB2015610B|1982-12-01|
    DE2848682B2|1981-07-09|
    DE2848682A1|1979-08-30|
    GB2015610A|1979-09-12|
    SE8800842L|1988-03-09|
    ES474980A1|1980-01-16|
    FI783321A|1979-08-28|
    BR7808053A|1979-09-25|
    JPS54116403A|1979-09-10|
    IT7829855D0|1978-11-16|
    JPS5747797B2|1982-10-12|
    FR2418296A1|1979-09-21|
    US4154644A|1979-05-15|
    ATA139279A|1984-05-15|
    CA1088791A|1980-11-04|
    DE2848682C3|1982-05-19|
    IT1102316B|1985-10-07|
    SE8800842D0|1988-03-09|
    SE7811285L|1979-08-28|
    SE446279C|1989-04-06|
    FI68095B|1985-03-29|
    ES480401A1|1980-02-01|
    FI68095C|1987-04-14|
    SE446279B|1986-08-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1648111A|1927-01-10|1927-11-08|Collins Richard|Method of treating sulphate and soda pulp|
    US2073654A|1930-04-14|1937-03-16|Smiley Ind Filter Company|Paper manufacture|
    US1933609A|1932-02-17|1933-11-07|J O Ross Engineering Corp|Multiple stage pulp washer|
    US2356285A|1938-05-19|1944-08-22|Downingtown Mfg Co|Apparatus for washing pulp|
    US2352304A|1940-08-03|1944-06-27|Frank W Young|Filter|
    US2431009A|1943-10-08|1947-11-18|Frank W Young|Foam control in brown stock washing|
    US2737858A|1954-04-27|1956-03-13|Forming Machine Company Of Ame|Vertical chamber positive pressure machine for forming continuous strips of fibrous materials|
    US2983383A|1956-10-22|1961-05-09|Us Hoffman Machinery Corp|Liquid filter|
    US2999785A|1959-07-17|1961-09-12|Kamyr Ab|Method and plant for washing of cellulosic pulp under overpressure|
    US3454970A|1965-09-22|1969-07-15|Lionel M Sutherland|Apparatus and process for washing a pulp web|
    AU449389B2|1969-07-16|1974-05-27|The Associated Paper Mills Limited|Methods and apparatus for producing fibrous webs andthe production of products therefrom|
    NO136891B|1973-01-10|1977-08-15|Stranger Johannessen Per|PROCEDURE AND APPARATUS FOR CONTINUOUS NUTRITIONAL WASHING OF SUBSTANCES CONTAINING A LIQUID.|
    US4046621A|1974-12-17|1977-09-06|The Ontario Paper Company Limited|Process for treating a slurry of cellulosic material|US4549415A|1983-02-03|1985-10-29|Beloit Corporation|Continuous counterflow belt washer|
    US4608122A|1983-03-11|1986-08-26|Westvaco Corporation|Method for washing a paper fiber on a belt washer using a sonic frequency disturbance|
    US4539827A|1983-03-11|1985-09-10|Westvaco Corporation|Belt washing improvements|
    SE436209B|1983-04-13|1984-11-19|Alf Ove Andersson|PROCEDURES FOR WASHING MASS|
    SE439788B|1983-11-01|1985-07-01|Mo Och Domsjoe Ab|DEVICE FOR CELLULOSAMASSA POLLUTION POLLUTION DURING SAMPLES FROM A MASS PENSION|
    SE444826B|1984-09-17|1986-05-12|Sunds Defibrator|DEVICE FOR LIQUID TREATMENT OF MASS|
    WO1986004938A1|1985-02-14|1986-08-28|Edward Francis Elton|Method and apparatus for alkaline delignification of lignocellulosic fibrous materials|
    US4680088A|1985-02-21|1987-07-14|Michael Scheck|Process for removing ink particles from paper products|
    US4719772A|1985-02-21|1988-01-19|Michael Scheck|Apparatus for removing ink particles from paper products|
    AT383627B|1985-03-12|1987-07-27|Andritz Ag Maschf|WASHING DEVICE FOR SUSPENSIONS|
    FI74752C|1986-03-20|1992-12-01|Ahlstroem Oy|OVER ANCHORING OF CELLULOSE TV|
    SE8601568L|1986-04-08|1987-10-09|Sunds Defibrator|DEVICE FOR LIQUID TREATMENT OF MASS|
    NL8602703A|1986-06-19|1988-01-18|Mudcleaning Services|METHOD FOR WINNING A BASIC SUSPENSION SUITABLE FOR PREPARING A DRILL FLUSH SUSPENSION USED WHEN ROTATING DRILLING A HOLE IN THE EARTH GROUND, FROM FINISHED SUSPENSION ARISING FROM DRILLING.|
    CA2028823A1|1989-03-14|1990-09-15|Norbert Kessler|Method and apparatus for washing cellulosic pulp|
    AT394737B|1989-07-03|1992-06-10|Andritz Ag Maschf|METHOD AND DEVICE FOR THE TREATMENT, IN PARTICULAR LAUNDRY, OF FIBER FUEL-LIQUID MIXTURES|
    US5122229A|1990-02-05|1992-06-16|The Black Clawson Company|Apparatus and method for washing cellulosic pulp|
    FR2660942B1|1990-04-11|1994-09-09|Kaysersberg Sa|CONTINUOUS IMPREGNATION PROCESS OF A TEXTILE TABLECLOTH.|
    US5785810A|1991-08-21|1998-07-28|Salminen; Reijo K.|Wood pulp processing apparatus and method|
    US5482594A|1991-08-21|1996-01-09|Salminen; Reijo|Liquid removal apparatus and method for wood pulp|
    WO1993009285A1|1991-11-04|1993-05-13|The Black Clawson Company|Apparatus and method for washing cellulosic pulp|
    US5275024A|1992-05-04|1994-01-04|The Black Clawson Company|Paper pulp washing|
    EP0689626A4|1993-02-19|1997-12-10|Reijo Salminen|Wood pulp processing apparatus and method|
    US6053439A|1996-12-16|2000-04-25|Inland Paperboard And Packaging, Inc.|Reducing wax content and enhancing quality of recycled pulp from OCC and waste paper|
    EP0949956A4|1997-01-02|2000-05-10|Thermo Black Clawson Inc|Improved mist eliminator|
    BR9913040A|1998-08-17|2001-05-08|Thermo Black Clawson Inc|Processes of extracting a sugar-rich liquor and a sugar component from sugarcane|
    US6339859B1|1999-06-25|2002-01-22|Lewis D. Shackford|Control system for a filtrate splitting device|
    BR0012405A|1999-07-12|2002-03-12|Thermo Black Clawson Inc|Cyclical separation device for separating liquid from gas containing liquid and gas, combination, pulp washer, cyclonic separation apparatus, method for separating liquids that exist in a gas stream in an apparatus, and, method for separating ink particles from a mud|
    WO2005028743A1|2003-09-18|2005-03-31|Hitachi Zosen Corporation|Black liquor extracting method in manufacturing straw pulp|
    FR2885371B1|2005-05-03|2007-08-03|Cie Ind De La Matiere Vegetale|INSTALLATION FOR IMPLEMENTING A PROCESS FOR PRODUCING PAPER PULP, LIGNINS AND SUGARS AND PROCESS FOR PRODUCING THE SAME|
    US7716850B2|2006-05-03|2010-05-18|Georgia-Pacific Consumer Products Lp|Energy-efficient yankee dryer hood system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/881,725|US4154644A|1978-02-27|1978-02-27|Pulp washer|
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