公开(公告)号：ES2128569T3

公开(公告)日：1999-05-16

申请号：ES94919933

申请日：1994-06-16

Applicant: SUNDS DEFIBRATOR IND AB

Inventor： GUSTAVSSON LENNART

IPC: B07B7/086 ,  B07B9/02 ,  B07B7/08

Abstract: PCT No. PCT/SE94/00591 Sec. 371 Date Nov. 30, 1995 Sec. 102(e) Date Nov. 30, 1995 PCT Filed Jun. 16, 1994 PCT Pub. No. WO95/00261 PCT Pub. Date Jan. 5, 1995In a method for separating heavy particles from a particulate material containing such heavy particles, use is made of a device having a Coanda sifter, which is adapted to receive a flow of the particulate material and which has a downwardly-facing, convexly single-curved surface (9), and a zigzag sifter (13) arranged after the Coanda sifter and having a plurality of zig-zag-shaped vertical walls (14) which are perpendicular to the axis of curvature of the single-curved surface (9) and define between them channels (15) extending upwards in zig-zag fashion. The particulate material is transported to the Coanda sifter and is conducted over its convexly single-curved surface (9) to have imparted to it a direction of motion (P1, P2) which is dependent on the weight of the particles and in which the particles are guided into the zigzag sifter (13). The particles are guided into the channels (15) of the zigzag sifter (13) in the lower portions thereof and from the side parallel to the channel walls (14). The particles are transported up through the channels (15) with the aid of a flow of transport air which is so adjusted that the heavy particles are separated in the zigzag sifter. (13).

公开(公告)号：NO305197B1

公开(公告)日：1999-04-19

申请号：NO933749

申请日：1993-10-18

Applicant: SUNDS DEFIBRATOR IND AB

Inventor： VIRVING NILS

IPC: D21B1/14 ,  B02C7/12 ,  D21D1/30

公开(公告)号：BR9708265A

公开(公告)日：1999-04-13

申请号：BR9708265

申请日：1997-03-07

Applicant: SUNDS DEFIBRATOR IND AB

Inventor： BOKSTROEM MONICA ,  LARSSON RUNE ,  FORSLUND KJELL ,  SUNDIN MATTS

IPC: D21C9/10 ,  D21C9/147

Abstract: Methods for oxygen delignification of chemical pulps are disclosed including contacting the chemical pulp with oxygen first in an upstream reactor vessel and then in a downstream reactor vessel. The upstream reactor vessel is maintained at pressures of greater than about 3 bar, and the downstream reactor vessel is maintained at temperatures of between about 90 and 120° C. and corresponding predetermined pressures. Heating of the partially delignified chemical pulp between the upstream and downstream reactors is accomplished by contacting the partially delignified chemical pulp with low pressure steam.

公开(公告)号：SE510031C2

公开(公告)日：1999-04-12

申请号：SE9802178

申请日：1998-06-17

Applicant: SUNDS DEFIBRATOR IND AB

Inventor： FORSLUND KJELL ,  DANIELSSON PETER

IPC: F04D9/04 ,  F04C19/00 ,  F04C23/00 ,  F04D7/04 ,  F04D9/00

Abstract: Apparatus is disclosed for pumping a pulp suspension including a housing and an impeller including a central hub, a wheel disk surrounding the central hub, and pump blades extending radially from the central hub along the wheel disk, which includes at least one opening for discharge of an entrained gas from the pump suspension, a vacuum pump at the rear face of the impeller, and vacuum pump blades mounted for rotation within the vacuum pump housing, which includes an outer wall which is eccentrically disposed with respect to the vacuum pump blade, and a rear wall which includes a suction port for receiving the entrained gas, and with the vacuum pump housing mounted adjacent to the central hub to provide a gap therebetween, so that vacuum pump housing is axially adjustable so that the gap can be altered by axial adjustment of the vacuum pump housing.

公开(公告)号：DE69413971T2

公开(公告)日：1999-03-11

申请号：DE69413971

申请日：1994-05-02

Applicant: SUNDS DEFIBRATOR IND AB

Inventor： VIRVING NILS

IPC: D21B1/14 ,  B02C7/12 ,  D21D1/30 ,  D21D1/38

公开(公告)号：SE9703062L

公开(公告)日：1999-02-26

申请号：SE9703062

申请日：1997-08-25

Applicant: SUNDS DEFIBRATOR IND AB

Inventor： LUNDGREN GOERAN ,  SOEDERBERG CARL-JOHAN

IPC: D21B20060101 ,  D21B1/12

公开(公告)号：NO990929A

公开(公告)日：1999-02-26

申请号：NO990929

申请日：1999-02-26

Applicant: SUNDS DEFIBRATOR IND AB

Inventor： ERIKSSON THOMAS ,  FREDRIKSSON B RJE ,  WIKSTR M TOMAS

IPC: B03D1/02 ,  B03D1/14 ,  D21B1/32 ,  D21C5/02 ,  D21F1/70 ,  B03D1/24

CPC classification number: D21C5/025 ,  B03D1/14 ,  B03D1/1456 ,  B03D1/247 ,  D21B1/325 ,  D21F1/70 ,  Y02W30/646 ,  Y02W30/648

公开(公告)号：BR9609583A

公开(公告)日：1999-02-23

申请号：BR9609583

申请日：1996-06-24

Applicant: SUNDS DEFIBRATOR IND AB

Inventor： FORSLUND KJELL ,  BERGDAHL ANDERS ,  KRISTROM KLAS

IPC: F16J15/34 ,  B03B5/12 ,  D21D5/02 ,  D21D5/06

Abstract: PCT No. PCT/SE96/00821 Sec. 371 Date Dec. 30, 1997 Sec. 102(e) Date Dec. 30, 1997 PCT Filed Jun. 24, 1996 PCT Pub. No. WO97/02384 PCT Pub. Date Jan. 23, 1997Apparatus for sealing rotary shafts supported by bearings within an airtight casing and extending into a housing maintained at an overpressure is disclosed including a mechanical shaft seal for sealing the shaft as it passes into the housing, a seal mount mounted on the casing for mounting the mechanical shaft seal, the casing including an opening to provide access to the mechanical shaft seal within the casing, and a removable airtight cover for sealing the opening in the casing during operation of the apparatus.

公开(公告)号：SE9702938L

公开(公告)日：1999-02-15

申请号：SE9702938

申请日：1997-08-14

Applicant: SUNDS DEFIBRATOR IND AB

Inventor： NILSSON LARS ,  BACKA STEFAN ,  PERSSON ULF

IPC: B01D53/72 ,  F26B21/10 ,  F26B23/02 ,  F26B21/06 ,  B01D53/86

Abstract: Method for drying wood raw material (10) by means of hot gases (20) supplied to the drying process, in which VOC, apart from water, evaporate from the wood raw material into the gases. The drying process is divided and carried out in at least two sub-steps (I, II), from which process gas (22, 33) is removed separately, and the drying process is thus controlled that VOC evaporate during one of the sub-steps, and the VOC are concentrated to this sub-step. The temperature of the gas containing VOC is increased to a temperature exceeding 180° C. before VOC are oxidized catalytically at said elevated temperature, in order to reduce the discharge of VOC from the drying process.

公开(公告)号：PL328698A1

公开(公告)日：1999-02-15

申请号：PL32869897

申请日：1997-03-06

Applicant: SUNDS DEFIBRATOR IND AB

Inventor： THORBJOERNSSON SVEN-INGVAR

IPC: B27N3/18 ,  B27N3/08 ,  B27N3/10 ,  B27N3/24

Abstract: PCT No. PCT/SE97/00386 Sec. 371 Date Sep. 4, 1998 Sec. 102(e) Date Sep. 4, 1998 PCT Filed Mar. 6, 1997 PCT Pub. No. WO97/32701 PCT Pub. Date Sep. 12, 1997Methods for prepressing lignocellulose-containing fibrous material are disclosed including forming a lignocellulose-containing fibrous material into a web, initially compressing the web and permitting expansion of the web, recompressing the web in an entry section of a prepress to a density proximating that of the density of the initially pressed web, permitting the recompressed web to undergo controlled expansion in an expansion section of the prepress, injecting steam into the web within either the entry or expansion sections of the prepress, and transferring the expanded web into a finishing press.