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WO2011104049A1 - Procédé de traitement thermique de farine crue de ciment dans une chambre de réaction - Google Patents

Procédé de traitement thermique de farine crue de ciment dans une chambre de réaction Download PDF

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Publication number
WO2011104049A1
WO2011104049A1 PCT/EP2011/050540 EP2011050540W WO2011104049A1 WO 2011104049 A1 WO2011104049 A1 WO 2011104049A1 EP 2011050540 W EP2011050540 W EP 2011050540W WO 2011104049 A1 WO2011104049 A1 WO 2011104049A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressed air
air nozzles
groups
reaction space
fuel
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.)
Ceased
Application number
PCT/EP2011/050540
Other languages
German (de)
English (en)
Inventor
Henning Brinkschulte
Karl Lampe
Daniel Klegraf
Alfons LEUER
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
ThyssenKrupp 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
Application filed by ThyssenKrupp Polysius AG filed Critical ThyssenKrupp Polysius AG
Priority to EP11700927A priority Critical patent/EP2382434A1/fr
Publication of WO2011104049A1 publication Critical patent/WO2011104049A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 specially adapted for rotary-drum furnaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
    • B65G53/06—Gas pressure systems operating without fluidisation of the materials
    • B65G53/08—Gas pressure systems operating without fluidisation of the materials with mechanical injection of the materials, e.g. by screw
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
    • C04B7/44—Burning; Melting
    • C04B7/4407—Treatment or selection of the fuel therefor, e.g. use of hazardous waste as secondary fuel ; Use of particular energy sources, e.g. waste hot gases from other processes
    • C04B7/4446—Treatment or selection of the fuel therefor, e.g. use of hazardous waste as secondary fuel ; Use of particular energy sources, e.g. waste hot gases from other processes the fuel being treated in a separate gasifying or decomposing chamber, e.g. a separate combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material

Definitions

  • the invention relates to a method for the thermal treatment of cement raw meal in a reaction space.
  • cement raw meal is first preheated in a preheating zone, then precalcined in a calcination zone, and then finishburned in a sintering zone before the fired clinker is cooled in a cooling zone.
  • Control of material flows which can be very versatile when using substitute fuels, and be entered in different places.
  • the entry of the materials takes place by mechanical or pneumatic means.
  • the solid streams are either by means of mechanical devices along a solid floor or in the
  • combustion chambers are either as Zykloidfeuerung with short
  • the invention is based on the object to improve the operation of the compressed air nozzles to the effect that a homogeneous thermal decomposition of the abandoned fuels is guaranteed.
  • cement raw meal is thermally treated in a reaction space, wherein the reaction space is a floor with a plurality of
  • Compressed air nozzles for the transport of fuels located on the ground wherein the compressed air nozzles are arranged in the transport direction both side by side and in succession and are divided into separately controllable groups of one or more compressed air nozzles, wherein the compressed air nozzles of a group are activated simultaneously and the following method steps are provided:
  • All groups of the compressed air nozzles are activated in succession, the sequence being chosen so that the majority of the temporally successive activations are effected by groups which are not arranged directly adjacent to or in the direction of transport.
  • the fuel is at a
  • the task of the fuel can be done for example by a screw, a slide, a circulating chain system or pneumatically.
  • special setting conditions can be provided for special operating conditions. This is the case, for example, during start-up operation, system malfunctions, changes in fuel quality, changes in the type of fuel or when the reaction space is switched off.
  • the activation of the groups of compressed air nozzles take place such that the CO value or the Temperature of the exhaust gas discharged from the reaction space does not exceed a maximum value.
  • 1 is a schematic view of the plant for cement production
  • FIG. 2 shows a schematic side view of the combustion chamber
  • FIG. 3 shows an arrangement of the compressed-air nozzles.
  • the plant for cement production shown in FIG. 1 consists essentially of a preheater 1, a calciner 2, a combustion chamber 3, a rotary kiln 4 and a cooler 5.
  • a preheater 1 a calciner 2
  • a combustion chamber 3 a rotary kiln 4
  • a cooler 5 a rotary kiln
  • the combustion chamber 3 shown enlarged in FIG. 2 has a reaction space 30, a floor 31, a plurality of schematically indicated compressed air nozzles 32 and means 33 for discharging fuel 7. Furthermore, in the area of the ceiling 34 of the combustion chamber 3 means 35 for the task of combustion air 8 and means 36 for the task of cement raw meal, in particular of preheated cement raw meal 6 'are provided.
  • the preheater preheated cement raw meal 6 ' can also be supplied together with the combustion air 8 (FIG. 1) to the reaction space 30 (see FIG. 1).
  • the means 33 for discharging the fuel 7, which is, for example, lumped substitute fuel, are for example designed as a screw conveyor, which introduces the fuel laterally into the reaction space 30 in the region of the one end of the bottom 31.
  • push beam or a moving floor can be used.
  • a pneumatic entry is also conceivable.
  • the bottom is formed step-shaped in the illustrated embodiment, wherein five compressed air nozzles 32 are arranged in each riser.
  • the nine existing stages with the associated compressed air nozzles thus result in the arrangement of the compressed-air nozzles shown in Fig. 3.
  • a different number and a different arrangement of the compressed air nozzles can be selected.
  • a substantially smooth, horizontal or inclined floor can be used instead of the staircase-shaped structure.
  • the orientation of the compressed air nozzles is suitably chosen so that, depending on the design of the soil, sufficient transport of the fuels is ensured.
  • a discharge opening 37 for discharging the resulting exhaust gases is provided together with the thermally treated cement raw meal at the lower end.
  • the combustion chamber 3 is coupled with the discharge opening 37 to the formed as a riser part of the calciner 2. But it is also conceivable that the combustion chamber 3 is connected directly to the inlet region of the rotary kiln 4.
  • the thermal decomposition of the fuel 7 takes place with the aid of the combustion air 8, which is, for example, hot tertiary air of the cooler 5.
  • the combustion air 8 which is, for example, hot tertiary air of the cooler 5.
  • the fuel 7 is transported in the transport direction 9 to the discharge opening 37, wherein it comes into contact with the combustion air 8 and is thereby thermally reacted.
  • the likewise supplied cement raw meal 6 ' is treated thermally and serves if necessary, also for controlling the temperature in the reaction space 30. In the resting phase between two kills further volatile components are expelled from the bed due to the heat of the combustion zone, rise in the combustion zone and burn there after mixing with the hot tertiary air.
  • the compressed air nozzles 32 are designed as specially designed hot blast nozzles, which are in communication with a compressed air tank. Although it would be conceivable in principle that each compressed air nozzle is assigned to its own compressed air tank, it will often be more practical and above all cheaper if several compressed air nozzles are connected to a compressed air tank.
  • compressed air nozzles or all groups of simultaneously activated compressed air nozzles are activated in chronological succession, the sequence being chosen so that the majority of the temporally consecutive activations by compressed air nozzles or groups that take place in or are not arranged directly adjacent to the transport direction 9. In this way a local, very strong CO development can be avoided.
  • the bottom 31 of nine stages, each with five compressed air nozzles 32 is adjusted so that it blows the respective compressed air nozzle 32 associated portion of a stage freely.
  • the fuel is transported in the transport direction 9 to the discharge opening 37 and thereby decomposed more and more.
  • the activation of the compressed-air nozzles 32 takes place counter to the transport direction 9 by the compressed air nozzles 32 of the lower stages are activated first and those of the upper stages last. In this way it is also ensured that a freely blown area of one stage of the bottom 31 is covered with fuel fuel relatively promptly, although not immediately by a next activation, by the activation of the next higher compressed air nozzle 32. In this way, the soil is thermally protected by the fuel.
  • Combustion chamber are then only flammable substances present, so here an even longer residence time is set to ensure complete burnout.
  • the volume of fuel to be transported increases from start to finish
  • Dependence of the CO value of the exhaust gas discharged from the reaction space or depending on the temperature of the exhaust gas discharged from the reaction space can be regulated.
  • the method described above is characterized by a very good thermal utilization of even difficult fuels, especially of combustible waste products.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)

Abstract

L'invention concerne un procédé selon lequel de la farine crue de ciment est traitée thermiquement dans une chambre de réaction, la chambre de réaction comprenant un fond doté d'une pluralité de buses à air comprimé servant au transport de combustibles situés sur le fond, les buses à air comprimé étant disposées les unes à côté des autres et les unes derrière les autres dans la direction de transport et étant réparties en groupes d'une ou de plusieurs buses à air comprimé pouvant être commandés de manière séparée, les buses à air comprimé d'un groupe étant activées simultanément et le procédé comprenant les étapes suivantes consistant à : a. introduire la farine crue de ciment, b. introduire le combustible, c. ajouter l'air de combustion, d. évacuer les effluents gazeux engendrés conjointement avec la farine crue de ciment traitée thermiquement et e. activer les buses à air comprimé pour le transport des combustibles situés sur le fond. Tous les groupes de buses à air comprimé sont activés de façon successive dans le temps, la séquence étant sélectionnée de telle sorte que la majorité des activations immédiatement successives dans le temps concerne des groupes qui ne sont pas directement adjacents dans la direction de transport ou transversalement par rapport à celle-ci.
PCT/EP2011/050540 2010-02-23 2011-01-17 Procédé de traitement thermique de farine crue de ciment dans une chambre de réaction Ceased WO2011104049A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11700927A EP2382434A1 (fr) 2010-02-23 2011-01-17 Procédé de traitement thermique de farine crue de ciment dans une chambre de réaction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010008785 DE102010008785B4 (de) 2010-02-23 2010-02-23 Verfahren zur thermischen Behandlung von Zementrohmehl in einem Reaktionsraum
DE102010008785.8 2010-02-23

Publications (1)

Publication Number Publication Date
WO2011104049A1 true WO2011104049A1 (fr) 2011-09-01

Family

ID=43795004

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/050540 Ceased WO2011104049A1 (fr) 2010-02-23 2011-01-17 Procédé de traitement thermique de farine crue de ciment dans une chambre de réaction

Country Status (3)

Country Link
EP (1) EP2382434A1 (fr)
DE (1) DE102010008785B4 (fr)
WO (1) WO2011104049A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103256824A (zh) * 2012-02-20 2013-08-21 宝山钢铁股份有限公司 脉冲烧嘴的智能化分级炉温控制方法
KR20170056590A (ko) * 2014-09-11 2017-05-23 티센크루프 인더스트리얼 솔루션스 아게 분산성 원료의 열처리 방법 및 그 시스템
CN107388816A (zh) * 2017-08-17 2017-11-24 安徽卓煌机械设备有限公司 一种螺旋叶片式中心加热水泥熟化回转窑

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012022179B4 (de) * 2012-11-13 2014-07-03 Khd Humboldt Wedag Gmbh Brenneinrichtung für stückige Brennstoffe mit mechanischem Brennstofftransport
DE102016111291A1 (de) 2016-06-21 2017-12-21 Thyssenkrupp Ag Vorrichtung und Verfahren zur Wärmebehandlung von mineralischem Gut
CN112363474B (zh) * 2020-11-09 2022-02-01 浙江蓝卓工业互联网信息技术有限公司 一种熟料烧成系统中控制参数的优化方法及装置
DE102022203597A1 (de) 2022-04-08 2023-10-12 Thyssenkrupp Ag Anlage und ein Verfahren zur Wärmebehandlung von mineralischem Material
US20250251194A1 (en) 2022-04-08 2025-08-07 thyssenkrupp Polysius GmbH System and method for heat-treating mineral material
BE1030435B1 (de) 2022-04-08 2023-11-14 Thyssenkrupp Ind Solutions Ag Anlage und ein Verfahren zur Wärmebehandlung von mineralischem Material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004045510A1 (de) 2004-09-14 2006-03-30 Polysius Ag Verfahren und Vorrichtung zum Veraschen von Brennstoff
DE102005052753A1 (de) 2005-11-04 2007-05-10 Polysius Ag Anlage und Verfahren zur Herstellung von Zementklinker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004045510A1 (de) 2004-09-14 2006-03-30 Polysius Ag Verfahren und Vorrichtung zum Veraschen von Brennstoff
DE102005052753A1 (de) 2005-11-04 2007-05-10 Polysius Ag Anlage und Verfahren zur Herstellung von Zementklinker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103256824A (zh) * 2012-02-20 2013-08-21 宝山钢铁股份有限公司 脉冲烧嘴的智能化分级炉温控制方法
CN103256824B (zh) * 2012-02-20 2014-12-24 宝山钢铁股份有限公司 脉冲烧嘴的智能化分级炉温控制方法
KR20170056590A (ko) * 2014-09-11 2017-05-23 티센크루프 인더스트리얼 솔루션스 아게 분산성 원료의 열처리 방법 및 그 시스템
JP2017535501A (ja) * 2014-09-11 2017-11-30 ティッセンクルップ インダストリアル ソリューションズ アクツィエンゲゼルシャフトＴｈｙｓｓｅｎＫｒｕｐｐ Ｉｎｄｕｓｔｒｉａｌ Ｓｏｌｕｔｉｏｎｓ ＡＧ 分散性原料の熱処理の方法およびシステム
KR102049158B1 (ko) * 2014-09-11 2019-11-26 티센크루프 인더스트리얼 솔루션스 아게 분산성 원료의 열처리 방법 및 그 시스템
CN107388816A (zh) * 2017-08-17 2017-11-24 安徽卓煌机械设备有限公司 一种螺旋叶片式中心加热水泥熟化回转窑

Also Published As

Publication number Publication date
DE102010008785A1 (de) 2011-08-25
DE102010008785B4 (de) 2011-09-01
EP2382434A1 (fr) 2011-11-02

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