EP0141073B1 - Verfahren zur Erhöhung des Abscheidungsgrades eines Zyklons und Zyklonenabscheider zur Durchführung des Verfahrens - Google Patents

Verfahren zur Erhöhung des Abscheidungsgrades eines Zyklons und Zyklonenabscheider zur Durchführung des Verfahrens Download PDF

Info

Publication number
EP0141073B1
EP0141073B1 EP84109299A EP84109299A EP0141073B1 EP 0141073 B1 EP0141073 B1 EP 0141073B1 EP 84109299 A EP84109299 A EP 84109299A EP 84109299 A EP84109299 A EP 84109299A EP 0141073 B1 EP0141073 B1 EP 0141073B1
Authority
EP
European Patent Office
Prior art keywords
cyclone
particles
gas
separation
degree
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
Application number
EP84109299A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0141073A3 (en
EP0141073A2 (de
Inventor
Roine Dipl.-Ing. Brännström
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Stal AB
Original Assignee
Asea Stal 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 Asea Stal AB filed Critical Asea Stal AB
Priority to AT84109299T priority Critical patent/ATE48246T1/de
Publication of EP0141073A2 publication Critical patent/EP0141073A2/de
Publication of EP0141073A3 publication Critical patent/EP0141073A3/de
Application granted granted Critical
Publication of EP0141073B1 publication Critical patent/EP0141073B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • 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
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • 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

Definitions

  • the present invention relates to a method for increasing the degree of separation of a cyclone according to the preamble of claim 1 and a cyclone separator for performing the method.
  • the degree of separation of a cyclone depends to a large extent on the rate of entry into the cyclone and on the size of the particles. The greater the entry speed, the greater the degree of separation. Small particles are more difficult to separate than large ones. This is due to the fact that small particles have a low falling speed and are more easily entrained with the air flow into the central part of the cyclone.
  • the invention has for its object to develop a method according to the preamble of claim 1 and bushing arrangement, which has a significantly greater degree of separation, without this resulting in the shortening of the service life due to increased inlet speeds of the gas at the inlet of the cyclone.
  • a cyclone separator for performing the method is characterized according to the invention by the features mentioned in claims 5 and 6.
  • the particles in the transport gas are braked or brought to a standstill at a certain distance before entering the cyclone. Behind this braking point, the particles are accelerated again by the transport gas. The large, heavy particles are accelerated more slowly than the small, light particles.
  • a desired “speed profile” can be achieved for the particles at the entrance to the cyclone.
  • This distance is chosen so that the particles, the size of which is above a certain value and which consequently have a large erosion effect, get a speed which does not exceed approx. 20 m / s.
  • the smallest particles are quickly accelerated to the speed of the transport gas. Due to the high entry speed, a better degree of separation for small particles and an equally good degree of separation for large particles are obtained compared to known cleaning systems. The total degree of separation is thus increased without increasing the erosion and the associated loss in the life of the cyclone.
  • the particles can be braked in a T-shaped branch pipe, which is connected to the cyclone inlet with the part corresponding to the vertical bar of the “T”.
  • the crossbar of the "T” is connected at one end to the transport line, while the other end is closed with a cover and forms a blind space.
  • a “cushion” consisting of particles collects in this blind space, which forms a braking impact surface and prevents direct contact of the flowing particles with the material of the branch pipe and thus prevents erosion thereof. It goes without saying that the part of the branch pipe corresponding to the crossbar of the “T” can have ends of different lengths.
  • the invention can be used, for example, in an incineration plant with a pressurized fluidized bed (PFBC plant) and gas turbines which are driven by the combustion gases of the plant.
  • PFBC plant pressurized fluidized bed
  • gas turbines which are driven by the combustion gases of the plant.
  • the pressure vessel can be made smaller. The investment costs are significantly reduced.
  • the pressure drop caused by the deflection in the T-shaped branch pipes is compensated for by a smaller number of cyclones connected in series.
  • 1 denotes a cyclone
  • the gas containing particles through the transport line 2 is fed.
  • the particles e.g. B. dust that is entrained by the combustion gases that a pressurized fluidized bed of an incinerator, for. B. a power plant, leave in the transport line 2 essentially the same speed as the transport gas.
  • gas and particles have the same speed when they enter the cyclone 1.
  • Particularly coarse particles cause strong erosion in the section of the wall of the cyclone denoted by 3 at a high entry speed.
  • the limit for the entry speed is usually between 15 and 20 m / s.
  • a T-shaped branch pipe 4 with its part 5 corresponding to the vertical bar of the “T” is connected to the inlet of the cyclone 1, while the transport line is connected to part 6 of the branch pipe.
  • Part 7 of the branch pipe is closed with a cover 8 and forms a blind space 9 which fills with particles which form a brake pad on which the particles located in the transport line are braked.
  • a suitable “speed profile” can be obtained for the particle mass in the gas stream . This makes it possible to use gas speeds of 50 m / s and more, but at the same time limit the speed of the larger particles to less than 15 to 20 m / s, which is desirable in view of erosion.
  • Line 10 shows the speed of the transport gas in transport line 2 and in the branch pipe.
  • the particle speed is represented by curve 11, which shows a “speed profile” of the particles. It can be seen from the curve that the particle speed decreases with increasing particle size.
  • the shape and position of the curve depend on the length x of the pipe branch 5 of the branch pipe. With a longer length x, the curve is shifted to the top right, as shown by arrow 12.
  • the dashed curves 11a and 11b show speed profiles with a greater or smaller length x of the part 5 of the branch pipe 5.
  • the dashed line 13 denotes the normal entry speed for gas and particles in a conventional cyclone construction. As can be seen from curve 11, the entry speed of the larger particles is below line 13, which is desirable in terms of erosion and service life.
  • the cyclone separator according to the invention is extremely valuable for the separation of bed material or ash from the transport gas of a PFBC plant with a bed and ash discharge device of the type described in EP-A-83 306 073.4.
  • the cyclone separator is arranged at the outlet end of the discharge device between the latter and a collecting container for separated material.
  • ash extraction devices of the type mentioned it is expedient to work at high transport speeds, for example 50-60 m / s. Direct introduction of the particle-containing gas into a cyclone at this high speed would result in unsustainable erosion and thus shorten the life of the cyclone.
  • the invention achieves both an acceptable wear of the cyclone and a high degree of separation for fine particles.

Landscapes

  • Cyclones (AREA)
EP84109299A 1983-08-16 1984-08-06 Verfahren zur Erhöhung des Abscheidungsgrades eines Zyklons und Zyklonenabscheider zur Durchführung des Verfahrens Expired EP0141073B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84109299T ATE48246T1 (de) 1983-08-16 1984-08-06 Verfahren zur erhoehung des abscheidungsgrades eines zyklons und zyklonenabscheider zur durchfuehrung des verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8304429A SE437943B (sv) 1983-08-16 1983-08-16 Sett att oka en cyklons avskiljningsgrad och cyklonavskiljare for genomforande av settet
SE8304429 1983-08-16

Publications (3)

Publication Number Publication Date
EP0141073A2 EP0141073A2 (de) 1985-05-15
EP0141073A3 EP0141073A3 (en) 1988-03-30
EP0141073B1 true EP0141073B1 (de) 1989-11-29

Family

ID=20352208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109299A Expired EP0141073B1 (de) 1983-08-16 1984-08-06 Verfahren zur Erhöhung des Abscheidungsgrades eines Zyklons und Zyklonenabscheider zur Durchführung des Verfahrens

Country Status (6)

Country Link
US (1) US4606739A (ru)
EP (1) EP0141073B1 (ru)
JP (1) JPS6061060A (ru)
AT (1) ATE48246T1 (ru)
DE (1) DE3480591D1 (ru)
SE (1) SE437943B (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10231546B2 (en) 2017-03-02 2019-03-19 Knoll, Inc. Chair back tilt mechanism

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE468240B (sv) * 1991-12-23 1992-11-30 Kamyr Ab Saett och cyklonanordning foer att motverka skumbildning
US5660282A (en) * 1993-04-29 1997-08-26 Evergreen Global Resources, Inc. Method and apparatus for separating resource materials from solid waste
US6936086B2 (en) * 2002-09-11 2005-08-30 Planar Systems, Inc. High conductivity particle filter
US8439670B2 (en) * 2007-08-07 2013-05-14 Polysius Ag Device for separating a solid material and a gas and a plant for cement manufacture
AT505750B1 (de) * 2007-12-21 2009-04-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zur grobabscheidung von feststoffpartikeln aus feststoffbeladenen gasen
CA3174436A1 (en) * 2020-03-06 2021-09-10 Metso Outotec Finland Oy Cyclone separator arrangement

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1469702A (en) * 1923-10-02 Air-cleaning attachment eor automobile carburetors
US2056022A (en) * 1936-01-18 1936-09-29 Gen Electric Flow controlling device for refrigerating systems
US2311868A (en) * 1940-10-01 1943-02-23 Armentrout Arthur L Apparatus for controlling the flow of fluids
US2718754A (en) * 1951-06-30 1955-09-27 Exxon Research Engineering Co Combustion system for combustion gas turbines
US3146998A (en) * 1960-10-22 1964-09-01 Kloeckner Humboldt Deutz Ag Method and apparatus for preheating of fine-grain material
DE2440888C3 (de) * 1974-08-27 1978-11-23 Waeschle Maschinenfabrik Gmbh, 7980 Ravensburg Anlage zum aufeinanderfolgenden Beschicken mehrerer, hintereinander an eine pneumatische Förderleitung über Abscheider angeschlossener Entnahmestationen mit Schüttgut
US3974572A (en) * 1975-01-16 1976-08-17 Aluminium Pechiney Process and heat exchanger for continuous circulation of fluidized powder in heat exchange with a hot gas
SU761539A1 (ru) * 1977-01-24 1980-09-07 Uk Nii Oroshaemogo Zemledeliya Установка для мелиорации оросительной воды 1
US4267048A (en) * 1979-03-12 1981-05-12 Oishikikai Mfg. Co., Ltd. Equipment for separating foreign matter from liquid papermaking materials
US4288235A (en) * 1979-07-06 1981-09-08 Stone & Webster Engineering Corporation Low residence time solid-gas separation device and system
JPS5624530U (ru) * 1979-07-31 1981-03-05
JPS56137751U (ru) * 1980-03-14 1981-10-19
SE8004924L (sv) * 1980-07-03 1982-01-04 Stal Laval Turbin Ab Askkylare for virvelbeddsbrennkammare
JPS5821549U (ja) * 1981-08-04 1983-02-09 岸本産業株式会社 医療用薬液容器の密栓
US4504291A (en) * 1983-06-29 1985-03-12 Mobil Oil Corporation Dropout boot for power recovery train

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10231546B2 (en) 2017-03-02 2019-03-19 Knoll, Inc. Chair back tilt mechanism

Also Published As

Publication number Publication date
EP0141073A3 (en) 1988-03-30
JPS6061060A (ja) 1985-04-08
EP0141073A2 (de) 1985-05-15
SE437943B (sv) 1985-03-25
ATE48246T1 (de) 1989-12-15
SE8304429L (sv) 1985-02-17
DE3480591D1 (de) 1990-01-04
SE8304429D0 (sv) 1983-08-16
US4606739A (en) 1986-08-19
JPH0446623B2 (ru) 1992-07-30

Similar Documents

Publication Publication Date Title
DE2948168C2 (de) Fliehkraftabscheider für in einem Gasstrom suspendierte Feststoffpartikel
DE970433C (de) Verfahren und Vorrichtung zur Entfernung von feinverteilter suspendierter Materie aus Gasen
EP0461695B1 (de) Verfahren und Vorrichtung zur Reinigung staub- und schadstoffhaltiger Abgase
DE2538193C2 (de) Düsen einer Vorrichtung zur Gasverteilung für Wirbelschichten
DE1542314B2 (de) Verfahren und vorrichtung zur entfernung von schwefeloxiden aus abgasen
DE2925245A1 (de) Verfahren zum abtrennen teilchenfoermigen materials aus einem gasstrom
DE2319730A1 (de) Oelabscheider
DE2731696A1 (de) Verfahren und vorrichtung zum selektiven feinzerkleinern von teilchen aus brechbarem material
EP0141073B1 (de) Verfahren zur Erhöhung des Abscheidungsgrades eines Zyklons und Zyklonenabscheider zur Durchführung des Verfahrens
DE3300859C2 (de) Vorrichtung zur Umlenkung und Verteilung eines Gasstromes
DE2838173A1 (de) Zyklonabscheider zum abscheiden von schwer- und staubteilen aus fasermaterial
DE69212308T2 (de) Vorrichtung zum trennen von mehreren komponenten enthaltenden fluiden
DE1671413B1 (de) Venturiwaescher zur nassreinigung von gasen
DE2702019A1 (de) Staubabscheider
EP0290956B1 (de) Staubabscheide-Vorrichtung
DE2353111A1 (de) Einrichtung zur abscheidung von wasser aus dampf-wasser-gemischen
DE1556654A1 (de) Verfahren zur Abtrennung von Fehlteilchen bei der pneumatischen Foerderung und Vorrichtung zur Durchfuehrung des Verfahrens
WO1981002724A1 (en) Method for adjusting the transport conditions in a pneumatic conveyor and pneumatic plant in a flour-mill for implementing such method
DE3320719C2 (ru)
DE69007300T2 (de) Verfahren und Vorrichtung zum Erosions-Korrosionsschutz von Dampfleitungen aus dem Hochdruckteil einer Turbine.
DE2213276C3 (de) Naßabscheider für in einem Gasstrom suspendierte Teilchen
WO2022096670A1 (de) Absaugvorrichtung zum absaugen von prozessgas aus einer prozesskammer einer vorrichtung sowie vorrichtung zur herstellung von dreidimensionalen objekten
DE19651857C1 (de) Vorrichtung zur Abscheidung von Feststoffen aus staubbeladenen Abgasen, insbesondere von Verbrennungsanlagen
DE2534166A1 (de) Verfahren und vorrichtung zum reinigen von staubhaltigen gasen
DE68911711T2 (de) Sammelleitung zum Aufnehmen von Gasströmen aus einer Mehrzahl von parallel arbeitenden Einheiten.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI NL

17P Request for examination filed

Effective date: 19880920

17Q First examination report despatched

Effective date: 19890102

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL

REF Corresponds to:

Ref document number: 48246

Country of ref document: AT

Date of ref document: 19891215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3480591

Country of ref document: DE

Date of ref document: 19900104

ET Fr: translation filed
ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19920813

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19920831

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19920918

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19930806

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19930831

BERE Be: lapsed

Owner name: ASEA STAL A.B.

Effective date: 19930831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19940301

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970728

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19970811

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970818

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19970821

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980806

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980831

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980806

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST