EP0177667A1 - Dispositif pour la déviation d'écoulement de gaz de fumée et de la séparation de cendres volantes dans une chaudière à plusieurs évents - Google Patents

Dispositif pour la déviation d'écoulement de gaz de fumée et de la séparation de cendres volantes dans une chaudière à plusieurs évents Download PDF

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Publication number
EP0177667A1
EP0177667A1 EP19850103578 EP85103578A EP0177667A1 EP 0177667 A1 EP0177667 A1 EP 0177667A1 EP 19850103578 EP19850103578 EP 19850103578 EP 85103578 A EP85103578 A EP 85103578A EP 0177667 A1 EP0177667 A1 EP 0177667A1
Authority
EP
European Patent Office
Prior art keywords
flow
flue gas
blade
deflection
degrees
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.)
Granted
Application number
EP19850103578
Other languages
German (de)
English (en)
Other versions
EP0177667B1 (fr
Inventor
Georg Schulz
Alexander Jachimowski
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.)
Von Roll AG
Original Assignee
Von Roll AG
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 Von Roll AG filed Critical Von Roll AG
Publication of EP0177667A1 publication Critical patent/EP0177667A1/fr
Application granted granted Critical
Publication of EP0177667B1 publication Critical patent/EP0177667B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/027—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using cyclone separators

Definitions

  • the invention is in the field of cleaning flue gases, in particular flue gases from waste incinerators. and relates to a device for improving the flow deflection of flue gas and the fly ash separation in a multi-pass boiler.
  • the object is achieved by a blade grille arranged in the deflection area of a lower deflection between two vertical trains.
  • a blade grille arranged in the deflection area of a lower deflection between two vertical trains.
  • stripping edges which g is the current tranquilizer into a direct flow in the outflow of the blade itters not significantly affect.
  • the flue gas deflection as shown in FIGS. 1 and 2, essentially shows the difference between a deflection without and with steering elements, which steering elements are installed for the purpose of preventing the formation of eddies during such a deflection.
  • the task of this steering member shown according to prior art is to provide a Gleichströmun g after deflection to achieve.
  • FIG. 2 shows an attempt to suppress these undesirable flow conditions by means of a first steering element in the form of a plate 16 and a further steering element in the form of a projection 18 arranged in a specific position.
  • FIGS. 3A and 3B serve to discuss this.
  • FIG. 3A shows, based on FIG. 1, a flow pattern in a flue gas deflection without steering elements.
  • the flue gas flows at E through the downward path in the arrow direction to the deflection U, with a (mean) deflection radius R through it and in the arrow direction at A out of the deflection U into the upward train.
  • the boundary areas of the flow are designated by G.
  • FIG. 3B shows, for the same reason, the flow pattern in a flue gas deflection with a vane grille, as taught by the invention.
  • the vane grille generally has n vanes, only two of them in favor of a clear representation in FIG.
  • n shoveling the vane grille the flow is divided proportionally into n + 1 individual flows.
  • Each of these partial flows behaves essentially the same as the flow according to FIG. 3A, i.e. each partial flow shows the same or at least very similar flow profile.
  • the shape of the blades or wings of the blade grille is of considerable importance from the theory of the blade grids for turbomachines.
  • the vane grille also called the row of wings, is derived in detail from the wing; the pressure drop (or pressure increase) in the grid is functionally linked to the shape of the wing.
  • the flat plate can easily be used in the velocity field for flue gas flows.
  • the angle of attack Flow should be 90 degrees or less at such a level, but placed under gravity in such a way that it has an angle of repose for the flue gas particles to slide off of 45 degrees or greater.
  • the goal of a solution for wide application is thus achieved through the use of vane grids in flue gas deflections.
  • a derived variant of the flat plate is the "bent" plate with an obtuse, essentially transverse to the flow direction, for example, between 120 and 180 degrees.
  • Such a bent plate still corresponds to the flat plate, although the effect is in the direction of one curved blade developed.
  • a correspondingly polygonally bent plate would approach the plane.
  • the efficiency of the vane grille can be improved if part of the (flat) vanes is bent, preferably the vanes closer to the central wall M of the vertical train.
  • a single kink in the upper third region of the blade, as viewed in the direction of flow, has proven to be expedient. Two and more Abknickun g s at the same blades provide any special beneficial effect, but more expensive production thereof.
  • FIG. 4 and 5 show two preferred embodiments of the invention.
  • the boiler train 30 is fixed in a suspension 35; it is parallel to the vertical train Gravity.
  • the partition wall M divides the vertical train into a downward train E and an upward train A, according to the flow arrows.
  • an aggregate 40 is arranged, for example., A heat exchanger, which is flown by the blade cascade Sl / S2 / S3 forth.
  • the lengths 1 of the individual blades S1, S2, S3 are each different; they increase towards the outer area of the current; on the other hand, the distance between the blades is constant, they are arranged equidistantly.
  • the blades in FIG. 4 the blades in FIG.
  • the invention shows the following properties and features in a ruched representation: It is a device for improving the flow deflection of flue gas and the fly ash separation in a multi-pass boiler characterized by an n-blade vane grill (S1 / S2 /.../ Sn) in the deflection (U ) of the vertical train (30).
  • the blades (S1, S2, ..., Sn) of the blade grille (Sl / S2 /.../ Sn) in the deflection (U) of the vertical train (30) are preferably arranged in the transition area of the upward train (A) and the blade g itter (S1 / S2 /.../ Sn) consists of flat blades (Sl, S2, ..., Sn).
  • the blades (Sl, S2, ..., Sn) have an angle of attack to the flow of less than or equal to 90 degrees and an angle of inclination to gravity of less than or equal to 45 degrees.
  • the angle of attack is preferably 90-80 degrees and the angle of inclination is equal to 20-40 degrees.
  • the t / 1 ratio is generally ⁇ 1, the blade length 1 corresponding to an average value and t to an average blade spacing for different blade lengths of the blades (S1, S '', ..., Sn).
  • the blades (S1, S2, ..., Sn) preferably have a scraper edge (K1, K2, .... Kn) at the outflow end, the angle enclosed between the blade and the scraper edge being 90-45 degrees.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Incineration Of Waste (AREA)
  • Treating Waste Gases (AREA)
EP19850103578 1984-05-18 1985-03-26 Dispositif pour la déviation d'écoulement de gaz de fumée et de la séparation de cendres volantes dans une chaudière à plusieurs évents Expired - Lifetime EP0177667B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH246784A CH665467A5 (de) 1984-05-18 1984-05-18 Einrichtung zur stroemungsumlenkung von rauchgas und der flugascheabscheidung in einem mehrzugkessel.
CH2467/84 1984-05-18

Publications (2)

Publication Number Publication Date
EP0177667A1 true EP0177667A1 (fr) 1986-04-16
EP0177667B1 EP0177667B1 (fr) 1990-04-25

Family

ID=4234472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850103578 Expired - Lifetime EP0177667B1 (fr) 1984-05-18 1985-03-26 Dispositif pour la déviation d'écoulement de gaz de fumée et de la séparation de cendres volantes dans une chaudière à plusieurs évents

Country Status (5)

Country Link
EP (1) EP0177667B1 (fr)
JP (1) JPH0651089B2 (fr)
CH (1) CH665467A5 (fr)
DE (1) DE3577346D1 (fr)
NO (1) NO159959C (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0386806A2 (fr) * 1989-03-08 1990-09-12 Metallgesellschaft Aktiengesellschaft Dispositif pour la séparation de cendres liquides
EP0748647A1 (fr) * 1995-06-12 1996-12-18 ABB Management AG Procédé et dispositif pour réduire la teneur en poussière d'un gaz provenant de la combustion d'un générateur de vapeur
EP0903536A1 (fr) 1997-09-23 1999-03-24 Asea Brown Boveri AG Générateur de vapeur avec séparateur de poussière intégré
EP0994319A2 (fr) * 1998-10-16 2000-04-19 ABB Ricerca SpA Dispositif de traitement d'émissions d'aciérie
WO2005114053A1 (fr) * 2004-05-21 2005-12-01 Alstom Technology Ltd. Méthode et appareil pour séparer des particules de poussière
KR100844288B1 (ko) 2004-05-21 2008-07-10 알스톰 테크놀러지 리미티드 먼지 입자 분리 방법 및 장치
CN105492826A (zh) * 2013-09-04 2016-04-13 三菱日立电力系统株式会社 管道壁面结构
CN110043916A (zh) * 2019-04-22 2019-07-23 广东电网有限责任公司 一种锅炉烟道和一种脱硝系统
WO2022011861A1 (fr) * 2020-07-15 2022-01-20 中国华能集团清洁能源技术研究院有限公司 Appareil pour améliorer l'uniformité des gaz de combustion du champ d'écoulement d'un coude à grand angle d'une chaudière

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4319635C2 (de) * 1993-06-14 1997-07-17 Erk Eckrohrkessel Rauchgas-Umlenk-Spoiler für Dampf- oder Heißwasserkessel
JP4605707B2 (ja) * 2005-03-30 2011-01-05 集塵装置株式会社 フィルター分離機
JP5977055B2 (ja) * 2012-03-23 2016-08-24 株式会社Ihi ガス整流装置、及び、該ガス整流装置を備えたバグフィルタ
CN112963853B (zh) * 2020-07-30 2021-12-21 山东大学 一种设置烟道分配器的锅炉系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2140167B2 (de) * 1971-08-11 1974-04-11 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Verfahren zur staubabscheidung in dampferzeugeranlagen und einrichtung zur anwendung dieses verfahrens
DD117274A1 (fr) * 1975-01-23 1976-01-05
DE2805671A1 (de) * 1977-03-07 1978-09-14 Von Roll Ag Einrichtung zur verbesserung der flugaschenabscheidung in einem verbrennungs-, insbesondere abfallverbrennungsofen mit mehrzugkessel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2140167B2 (de) * 1971-08-11 1974-04-11 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Verfahren zur staubabscheidung in dampferzeugeranlagen und einrichtung zur anwendung dieses verfahrens
DD117274A1 (fr) * 1975-01-23 1976-01-05
DE2805671A1 (de) * 1977-03-07 1978-09-14 Von Roll Ag Einrichtung zur verbesserung der flugaschenabscheidung in einem verbrennungs-, insbesondere abfallverbrennungsofen mit mehrzugkessel

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0386806A2 (fr) * 1989-03-08 1990-09-12 Metallgesellschaft Aktiengesellschaft Dispositif pour la séparation de cendres liquides
EP0386806B1 (fr) * 1989-03-08 1994-07-13 Metallgesellschaft Aktiengesellschaft Dispositif pour la séparation de cendres liquides
EP0748647A1 (fr) * 1995-06-12 1996-12-18 ABB Management AG Procédé et dispositif pour réduire la teneur en poussière d'un gaz provenant de la combustion d'un générateur de vapeur
EP0903536A1 (fr) 1997-09-23 1999-03-24 Asea Brown Boveri AG Générateur de vapeur avec séparateur de poussière intégré
US5983840A (en) * 1997-09-23 1999-11-16 Asea Brown Boveri Ag Steam generator with integrated dust separator
EP0994319A2 (fr) * 1998-10-16 2000-04-19 ABB Ricerca SpA Dispositif de traitement d'émissions d'aciérie
EP0994319A3 (fr) * 1998-10-16 2000-06-14 ABB Ricerca SpA Dispositif de traitement d'émissions d'aciérie
US6235236B1 (en) 1998-10-16 2001-05-22 Abb Ricerca Spa Apparatus for treating emissions of manufacturing plants
WO2005114053A1 (fr) * 2004-05-21 2005-12-01 Alstom Technology Ltd. Méthode et appareil pour séparer des particules de poussière
KR100844288B1 (ko) 2004-05-21 2008-07-10 알스톰 테크놀러지 리미티드 먼지 입자 분리 방법 및 장치
US7556674B2 (en) 2004-05-21 2009-07-07 Alstom Technology Ltd Method and device for the separation of dust particles
CN105492826A (zh) * 2013-09-04 2016-04-13 三菱日立电力系统株式会社 管道壁面结构
EP3034943A4 (fr) * 2013-09-04 2016-10-19 Mitsubishi Hitachi Power Sys Structure de surface de paroi de conduit
US10488040B2 (en) 2013-09-04 2019-11-26 Mitsubishi Hitachi Power Systems, Ltd. Duct wall surface structure
CN110043916A (zh) * 2019-04-22 2019-07-23 广东电网有限责任公司 一种锅炉烟道和一种脱硝系统
WO2022011861A1 (fr) * 2020-07-15 2022-01-20 中国华能集团清洁能源技术研究院有限公司 Appareil pour améliorer l'uniformité des gaz de combustion du champ d'écoulement d'un coude à grand angle d'une chaudière

Also Published As

Publication number Publication date
JPS60244317A (ja) 1985-12-04
NO159959C (no) 1989-02-22
NO159959B (no) 1988-11-14
CH665467A5 (de) 1988-05-13
DE3577346D1 (de) 1990-05-31
NO851269L (no) 1985-11-19
EP0177667B1 (fr) 1990-04-25
JPH0651089B2 (ja) 1994-07-06

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