SE9803230L - Cyclone for separating a mixture of steam and particles - Google Patents

Cyclone for separating a mixture of steam and particles

Info

Publication number
SE9803230L
SE9803230L SE9803230A SE9803230A SE9803230L SE 9803230 L SE9803230 L SE 9803230L SE 9803230 A SE9803230 A SE 9803230A SE 9803230 A SE9803230 A SE 9803230A SE 9803230 L SE9803230 L SE 9803230L
Authority
SE
Sweden
Prior art keywords
chamber
inlet
axial direction
transport element
direction past
Prior art date
Application number
SE9803230A
Other languages
Swedish (sv)
Other versions
SE512845C2 (en
SE9803230D0 (en
Inventor
Pentti Juhola
Original Assignee
Valmet Fibertech Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Valmet Fibertech Ab filed Critical Valmet Fibertech Ab
Priority to SE9803230A priority Critical patent/SE512845C2/en
Publication of SE9803230D0 publication Critical patent/SE9803230D0/en
Publication of SE9803230L publication Critical patent/SE9803230L/en
Publication of SE512845C2 publication Critical patent/SE512845C2/en

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
    • D21D5/26—De-aeration of paper stock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Cyclones (AREA)

Abstract

The particle transport element (30, 32) on the inside of the separation chamber (6) extends in an axial direction past the inlet (38), and a tubular wall (26) coaxial with this element and surrounded by part of this element extends slightly into the inlet end of the chamber, in an axial direction past the inlet. A helical flow channel (38, 40) is formed between the peripheral wall (10) of the chamber, the tubular wall and the transport element. A cyclone (2) for separating a mixture of steam and solid particles into a light (steam) fraction and a heavy (particle) fraction comprises a housing (4) that forms a rotation symmetrical separation chamber containing at least one tangential inlet at one end of the chamber, a heavy fraction exit (18) at the opposite end, and a light fraction exit (16) centrally located at the opposite end of the chamber to the heavy fraction exit. A transport device (22) rotatable inside the chamber about its symmetry axis comprises at least one elongated transport element extending helically along the chamber peripheral wall (10, 12), and is used to convey separated particles on the inside of the wall to the heavy fraction exit. The transport element extends in an axial direction past the inlet, and a tubular wall coaxial with this element and surrounded by part of this element extends slightly into the inlet end of the chamber, in an axial direction past the inlet. A helical flow channel is formed between the peripheral wall of the chamber, the tubular wall and the transport element.
SE9803230A 1998-09-23 1998-09-23 Cyclone for separating mixture of steam and particles formed during pulping, contains helical flow channels between chamber wall, tubular wall and transport elements to prevent particle accumulation on inside walls SE512845C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9803230A SE512845C2 (en) 1998-09-23 1998-09-23 Cyclone for separating mixture of steam and particles formed during pulping, contains helical flow channels between chamber wall, tubular wall and transport elements to prevent particle accumulation on inside walls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9803230A SE512845C2 (en) 1998-09-23 1998-09-23 Cyclone for separating mixture of steam and particles formed during pulping, contains helical flow channels between chamber wall, tubular wall and transport elements to prevent particle accumulation on inside walls

Publications (3)

Publication Number Publication Date
SE9803230D0 SE9803230D0 (en) 1998-09-23
SE9803230L true SE9803230L (en) 2000-03-24
SE512845C2 SE512845C2 (en) 2000-05-22

Family

ID=20412693

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9803230A SE512845C2 (en) 1998-09-23 1998-09-23 Cyclone for separating mixture of steam and particles formed during pulping, contains helical flow channels between chamber wall, tubular wall and transport elements to prevent particle accumulation on inside walls

Country Status (1)

Country Link
SE (1) SE512845C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE538725C2 (en) * 2014-06-26 2016-11-01 Valmet Oy Steam separation unit and hydrolysis process system comprising a steam separation unit

Also Published As

Publication number Publication date
SE512845C2 (en) 2000-05-22
SE9803230D0 (en) 1998-09-23

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