EP0176695A2 - Dispositif pour le traitement de matières fines - Google Patents

Dispositif pour le traitement de matières fines Download PDF

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Publication number
EP0176695A2
EP0176695A2 EP85109717A EP85109717A EP0176695A2 EP 0176695 A2 EP0176695 A2 EP 0176695A2 EP 85109717 A EP85109717 A EP 85109717A EP 85109717 A EP85109717 A EP 85109717A EP 0176695 A2 EP0176695 A2 EP 0176695A2
Authority
EP
European Patent Office
Prior art keywords
tertiary air
calciner
line
cross
lines
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
EP85109717A
Other languages
German (de)
English (en)
Other versions
EP0176695B1 (fr
EP0176695A3 (en
Inventor
Manfred Dipl.-Ing. Dürr
Karl Krützner
Heinz-Werner Dipl.-Ing. Thiemeyer
Jürgen Dipl.-Ing. Wurr
Peter Dipl.-Ing. Tiggesbäumker
Wolfgang Ing.-Grad. Rother
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Krupp Polysius 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6247251&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0176695(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Krupp Polysius AG filed Critical Krupp Polysius AG
Priority to AT85109717T priority Critical patent/ATE40743T1/de
Publication of EP0176695A2 publication Critical patent/EP0176695A2/fr
Publication of EP0176695A3 publication Critical patent/EP0176695A3/de
Application granted granted Critical
Publication of EP0176695B1 publication Critical patent/EP0176695B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/2016—Arrangements of preheating devices for the charge
    • F27B7/2025—Arrangements of preheating devices for the charge consisting of a single string of cyclones
    • F27B7/2033—Arrangements of preheating devices for the charge consisting of a single string of cyclones with means for precalcining the raw material

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • a device of this type is known from EP-A-2 054.
  • the downward sloping part of the tertiary air line is designed as a simple cylindrical tube.
  • the invention is therefore based on the object of designing a device of the type required in the preamble of claim 1 such that good fuel burnout and high deacidification of the raw material ini C alcinator are achieved even with a sluggish reaction behavior of fuel and / or raw material.
  • the tertiary air line is divided into two sub-lines, to each of which a good line is connected and which open into the calciner at circumferential locations opposite one another, then the junctions of the two tertiary air sub-lines are thus mutually ver sets that the two tertiary air partial flows in
  • Calcinator form a twist with a vertical axis.
  • Calcinator and the tertiary air line is high enough to overcome a cross-sectional narrowing of the order of magnitude mentioned.
  • the clear cross section of the tertiary air line at the confluence with the calciner is 25 to 75% of the unrestricted line cross section.
  • the device for heat treatment of fine material, in particular cement raw material, shown schematically in FIG. 1, contains a multi-stage cyclone preheater, of which only the two cyclones 1 and 2 of the lowest stage are shown.
  • the device further contains a rotary kiln 3, the exhaust pipe leading to the lowest stage of the cyclone preheater forming a calciner 4 for precalcining the preheated fine material.
  • the rotary kiln 3 is followed by a cooler (not shown) from which a tertiary air line leads to the calciner 4, which is divided into two tertiary air sub-lines 5, 6.
  • the part of the tertiary air sub-lines 5, 6 opening into the calciner 4 is inclined downward in the flow direction with respect to the horizontal.
  • the cross-sectional constriction is formed by a wedge 11, 12 that increasingly reduces the line cross-section in the flow direction of the tertiary air, the narrowest line cross-section at the confluence of the tertiary air sub-lines 5, 6 in the calculator 4 is available.
  • the wedges 11, 12 are attached to the top of the line cross section, so that the confluence of the tertiary air sub-lines in the calciner is narrowed by covering the upper cross-sectional area.
  • the wedges 11, 12 can be made of refractory material. It is of course also possible to design the pipeline itself in a wedge shape.
  • the inlet cross sections of the two tertiary air sub-lines 5, 6 in the calculator 4 can in principle be given any geometric shape.
  • the fine material preheated in the cyclone preheater reaches the tertiary air sub-lines 5, 6 (arrows 13, 14) via the good lines 7, 8 of the second lowest stage and is detected here by the partial tertiary air flows (arrows 15, 16).
  • the good-air mixture is then accelerated increasingly by the narrowing formed by the wedges 11 and 12, mixes in the area of the burners 9, 10 with the fuel added here (arrows 17, 18) and then joins into the calculator 4 at high speed.
  • the good-fuel-tertiary air mixture (arrows 19, 20) is detected by the rising furnace exhaust gases (arrow 21) and deflected.
  • the calciner 4 then burns out the fuel and deacidifies (precalcination) the fine material.
  • the highly deacidified fine material separated in the cyclones 1 and 2 of the lowest stage of the cyclone preheater then reaches the rotary kiln 3 via the product lines 22, 23.
  • FIG. 2 illustrates the narrowing of a round inlet cross section
  • FIG. 3 the narrowing of a rectangular inlet cross section.
  • other cross-sectional shapes are also possible.
  • FIGS. 1 to 3 While in the embodiments according to FIGS. 1 to 3, the inlet of the tertiary air lines is narrowed in the calciner by covering the upper cross-sectional region, ig.4 show the F to 7 embodiments bei.denen the mouth of the tertiary air branch pipes in the calciner is narrowed by covering a lateral cross-sectional area.
  • Fig. 4 illustrates the side narrowing of a round entrance cross-section
  • Fig. 5 the lateral narrowing of a rectangular entrance cross-section.
  • the cross-sectional constriction of the T is ertiär Kunststoff branch pipes 5 and 6 by a slide 24, 25 is formed, which at the mouth of the tertiary air branch pipes 5, is provided in the calciner 4 and 6 is suitably adjusted.
  • the narrowed cross-sectional areas of the junctions of the two tertiary air sub-lines are expediently offset from one another in such a way that the two tertiary air partial flows enter the calciner 4 laterally offset with respect to the vertical axis of the calculator.
  • Fig. 7 illustrates this using the example of a lateral narrowing by wedges 26, 27: These two wedges are each located on the right side (viewed in the direction of flow) of the relevant tertiary air sub-line 5, 6, so that the tertiary air sub-streams 28, 29 are on the side offset in relation to the vertical axis 30 of the calculator 4, enter it and form a swirl in the calculator with a vertical axis.
  • the good lines 7, 8 open into the tertiary air sub-lines 5, 6 in such a way that the imaginary extension of the good lines is at a distance from the side walls of the tertiary air sub-lines, preferably centrally between these side walls. This ensures that the preheated fine material when entering the tertiary air sub-lines 5, 6 does not run directly along a side wall of the (possibly already narrowed here) tertiary air sub-line, but preferably enters the center of the free cross-section of the tertiary air sub-lines. As a result, the fine material is properly captured by the tertiary air, and deposits and caking in the tertiary air sub-lines are avoided.
  • the constrictions of the tertiary air sub-lines at the confluence with the calciner are not formed by slides but by wedges to avoid pressure losses and deposits, these wedges can be made of refractory material.
  • the tertiary air line is each divided into two sub-lines 5, 6.
  • the invention can advantageously also be used when using a non-subdivided tertiary air line. Even if the tertiary air enters the calciner on one side is ensured by a suitable arrangement of the narrowed mouth that a turbulent flow arises in the calciner. This can be achieved, for example, by displacing the mouth laterally in the manner of FIG. 7 (in this case, however, using a single tertiary air line).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Noodles (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
EP85109717A 1984-10-05 1985-08-02 Dispositif pour le traitement de matières fines Expired EP0176695B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85109717T ATE40743T1 (de) 1984-10-05 1985-08-02 Vorrichtung zur waermebehandlung von feingut.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843436687 DE3436687A1 (de) 1984-10-05 1984-10-05 Vorrichtung zur waermebehandlung von feingut
DE3436687 1984-10-05

Publications (3)

Publication Number Publication Date
EP0176695A2 true EP0176695A2 (fr) 1986-04-09
EP0176695A3 EP0176695A3 (en) 1987-07-15
EP0176695B1 EP0176695B1 (fr) 1989-02-08

Family

ID=6247251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109717A Expired EP0176695B1 (fr) 1984-10-05 1985-08-02 Dispositif pour le traitement de matières fines

Country Status (8)

Country Link
US (1) US4720262A (fr)
EP (1) EP0176695B1 (fr)
AT (1) ATE40743T1 (fr)
BR (1) BR8504069A (fr)
DE (2) DE3436687A1 (fr)
ES (1) ES8609172A1 (fr)
MX (1) MX171163B (fr)
ZA (1) ZA856058B (fr)

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DE3701964A1 (de) * 1987-01-23 1988-08-04 Krupp Polysius Ag Vorrichtung zur waermebehandlung von feinkoernigem gut
US4883004A (en) * 1988-08-31 1989-11-28 Niro Atomizer Inc. Method for inhibiting corrosion in integrated spray drying-calcining process
US5720116A (en) * 1994-10-12 1998-02-24 The Japan Iron And Steel Federation Apparatus for drying and heating coal to be charged to coke oven
US7001177B1 (en) * 2005-06-10 2006-02-21 Alemany Jose Torres Method and apparatus for recovering energy from waste materials by combustion using a portion of tertiary air
DE102005052753A1 (de) * 2005-11-04 2007-05-10 Polysius Ag Anlage und Verfahren zur Herstellung von Zementklinker
DE102006023980A1 (de) * 2006-05-22 2007-11-29 Polysius Ag Anlage zur Herstellung von Zementklinker
US9200225B2 (en) 2010-08-03 2015-12-01 Suncoke Technology And Development Llc. Method and apparatus for compacting coal for a coal coking process
EP3531018B1 (fr) 2012-07-31 2024-03-20 SunCoke Technology and Development LLC Système de prise en charge des émissions résultant du traitement du charbon
US9359554B2 (en) 2012-08-17 2016-06-07 Suncoke Technology And Development Llc Automatic draft control system for coke plants
US9243186B2 (en) 2012-08-17 2016-01-26 Suncoke Technology And Development Llc. Coke plant including exhaust gas sharing
US9249357B2 (en) 2012-08-17 2016-02-02 Suncoke Technology And Development Llc. Method and apparatus for volatile matter sharing in stamp-charged coke ovens
JP5541406B2 (ja) * 2012-08-28 2014-07-09 三菱マテリアル株式会社 セメント製造装置
US9169439B2 (en) 2012-08-29 2015-10-27 Suncoke Technology And Development Llc Method and apparatus for testing coal coking properties
WO2014046701A1 (fr) 2012-09-21 2014-03-27 Suncoke Technology And Development Llc. Fonctionnement d'un four à coke à débit de sortie réduit avec un partage de gaz fournissant un cycle de traitement prolongé
US9273249B2 (en) 2012-12-28 2016-03-01 Suncoke Technology And Development Llc. Systems and methods for controlling air distribution in a coke oven
US10760002B2 (en) 2012-12-28 2020-09-01 Suncoke Technology And Development Llc Systems and methods for maintaining a hot car in a coke plant
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US10883051B2 (en) 2012-12-28 2021-01-05 Suncoke Technology And Development Llc Methods and systems for improved coke quenching
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US9476547B2 (en) 2012-12-28 2016-10-25 Suncoke Technology And Development Llc Exhaust flow modifier, duct intersection incorporating the same, and methods therefor
US9238778B2 (en) 2012-12-28 2016-01-19 Suncoke Technology And Development Llc. Systems and methods for improving quenched coke recovery
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US9193915B2 (en) 2013-03-14 2015-11-24 Suncoke Technology And Development Llc. Horizontal heat recovery coke ovens having monolith crowns
US9273250B2 (en) 2013-03-15 2016-03-01 Suncoke Technology And Development Llc. Methods and systems for improved quench tower design
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AU2015284198A1 (en) 2014-06-30 2017-02-02 Suncoke Technology And Development Llc Horizontal heat recovery coke ovens having monolith crowns
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KR102441123B1 (ko) 2014-09-15 2022-09-06 선코크 테크놀러지 앤드 디벨로프먼트 엘엘씨 모놀리스 요소 구성을 갖는 코크스로
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US11060032B2 (en) 2015-01-02 2021-07-13 Suncoke Technology And Development Llc Integrated coke plant automation and optimization using advanced control and optimization techniques
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US2075258A (en) * 1933-07-01 1937-03-30 American Blower Corp Gas mixing apparatus
EP0002054A1 (fr) * 1977-11-23 1979-05-30 Krupp Polysius Ag Installation pour le traitement thermique de matières pulvérulentes
EP0075118A1 (fr) * 1981-09-16 1983-03-30 Krupp Polysius Ag Dispositif d'introduction de matiéres fines dans une zone de cuisson

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FR2279043A1 (fr) * 1974-07-17 1976-02-13 Fives Cail Babcock Installation de traitement thermique de matieres pulverulentes notamment pour la fabrication du ciment
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US4071309A (en) * 1976-05-28 1978-01-31 Allis-Chalmers Corporation Method and apparatus for making cement with preheater, kiln and heat exchanger for heating combustion air
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Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2075258A (en) * 1933-07-01 1937-03-30 American Blower Corp Gas mixing apparatus
EP0002054A1 (fr) * 1977-11-23 1979-05-30 Krupp Polysius Ag Installation pour le traitement thermique de matières pulvérulentes
EP0075118A1 (fr) * 1981-09-16 1983-03-30 Krupp Polysius Ag Dispositif d'introduction de matiéres fines dans une zone de cuisson

Also Published As

Publication number Publication date
DE3568218D1 (en) 1989-03-16
ES547531A0 (es) 1986-09-01
ES8609172A1 (es) 1986-09-01
US4720262A (en) 1988-01-19
EP0176695B1 (fr) 1989-02-08
EP0176695A3 (en) 1987-07-15
BR8504069A (pt) 1986-06-10
ZA856058B (en) 1986-04-30
MX171163B (es) 1993-10-06
ATE40743T1 (de) 1989-02-15
DE3436687A1 (de) 1986-04-10

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