DE102013001315A1 - Exhaust gas-free continuous furnace for heating building ceramic products, has channel, and generator set attached to furnace, where exhaust gas line of internal combustion engine of generator set is fixedly connected with furnace - Google Patents

Exhaust gas-free continuous furnace for heating building ceramic products, has channel, and generator set attached to furnace, where exhaust gas line of internal combustion engine of generator set is fixedly connected with furnace Download PDF

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DE102013001315A1
DE102013001315A1 DE201310001315 DE102013001315A DE102013001315A1 DE 102013001315 A1 DE102013001315 A1 DE 102013001315A1 DE 201310001315 DE201310001315 DE 201310001315 DE 102013001315 A DE102013001315 A DE 102013001315A DE 102013001315 A1 DE102013001315 A1 DE 102013001315A1
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Prior art keywords
furnace
exhaust gas
continuous furnace
generator set
gas flow
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German (de)
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Anmelder Gleich
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    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Tunnel Furnaces (AREA)

Abstract

The furnace (1) has a furnace channel in which a horizontal gas flow (8) is formed in counter flow, concurrent flow or changing flow direction (12). A generator set (13) is attached to the furnace, where the furnace is partially heated with exhaust gas flow of the generator set. An exhaust gas line of an internal combustion engine (10) of the generator set is fixedly connected with the furnace. The combustion engine of the generator set comprises a gas turbine with gaseous exhaust flow (6a) of high temperature stored in a cooling and/or combustion zone.

Description

Die Druckschrift DE 10 2011 100 736 A1 offenbart eine 3-stufige Kraft-Wärmekopplung zur gleichzeitigen Erzeugung von keramischen Produkten und Elektroenergie, mit einem Tunnelofen und Dampfprozess für die Verwendung von vorzugsweise Festbrennstoff und Abfallbrennstoffen.The publication DE 10 2011 100 736 A1 discloses a 3-stage cogeneration for co-generation of ceramic products and electric power, with a tunnel furnace and steam process for the use of preferably solid fuel and waste fuels.

Diese Verfahrensweise ist für größere Anlagen oder Neuanlagen wegen ihres Bau- bzw. Änderungsaufwand geeignet.This procedure is suitable for larger plants or new plants because of their construction or modification costs.

Für bestehende Anlagen mit Tunnelöfen z. B. zum Brennen von Ziegelerzeugnissen, Schamotte oder Steinzeug werden verschiedenliche öl- oder gasbetriebene Stromaggregate benutzt um billigere Elektroenergie so zu erzeugen dass die Abwärme der eingesetzten Verbrennungskraftmaschinen (Motoren, Gasturbinen) für Trockenzwecke verwendet wird. Diese Art Kraft-Wärmekopplung erfordert aber Wärmetauscheinrichtungen die bei Ölbetrieb der Stromaggregate Korrosion, Versottung und Reinigungsaufwand erfordert. Außerdem muss die Abwärmemenge der Aggregate begrenzt werden, da die Tunnelöfen ebenfalls schon Abwärme für Trockenzwecke liefern, um eine Überversorgung der Trockenanlage mit Wärme zu vermeiden.For existing systems with tunnel kilns z. As for burning of bricks, chamotte or stoneware different oil or gas powered generators are used to produce cheaper electric energy so that the waste heat of the internal combustion engines used (engines, gas turbines) is used for dry purposes. However, this type of combined heat and power requires heat exchanging devices that require corrosion, sooting and cleaning during oil operation of the generators. In addition, the waste heat quantity of the aggregates must be limited, since the tunnel kilns also already provide waste heat for dry purposes, in order to avoid over-supply of the drying plant with heat.

Wünschenswert ist aber eine Eigenvollversorgung des keramischen Betriebes mit Elektroenergie und auch noch eine Netzeinspeisung in Spitzenstromzeiten zur Netzentlastung. Somit könnten teuere neue Fernnetze entlastet werden zum Transport von regenerativer Energie.However, a self-sufficient supply of the ceramic operation with electrical energy and also a mains supply in peak current times for grid relief is desirable. Thus, expensive new long-distance networks could be relieved to transport renewable energy.

Beim Keramischen Betrieb lassen sich auch Produktionszeiten tagsüber so verschieben, dass eine verstärkte höhere, lokale Netzeinspeisung bei Windflaute und/oder Sonnenarmut erfolgen kann, während Brenn- und Trockenprozesse wie üblich kontinuierlich über 24 Stunden im Tag betrieben werden und den geringeren Verbrauch an Elektroenergie aufweisen, können Aufbereitung- und Formgebungsmaschinen zeitweise zu oder abgeschaltet werden.During the ceramic operation, production times can also be shifted during the day in such a way that increased, local grid feed-in in the event of wind and / or solar poverty can occur, while firing and drying processes are continuously operated as usual over 24 hours a day and have the lower consumption of electrical energy. Processing and forming machines can be temporarily switched on or off.

1 zeigt nur beispielhaft einen Durchlaufofen (1) mit Längsgasstrom (8) mit Stromaggregat (13) welches Aus Verbrennungskraftmaschine (10) (vorzugsweise Gasturbine) und Generator (11) besteht und den Abgasstrom (6) dreigeteilt (6a, 6b, 6c) in den Längsgasstrom (8) des Durchlaufofens (1) eingeführt werden. 1 shows only an example of a continuous furnace ( 1 ) with longitudinal gas flow ( 8th ) with generator ( 13 ) Which From internal combustion engine ( 10 ) (preferably gas turbine) and generator ( 11 ) and the exhaust gas flow ( 6 ) divided into three parts ( 6a . 6b . 6c ) in the longitudinal gas flow ( 8th ) of the continuous furnace ( 1 ).

2 zeigt beispielhaft die Abführung der im Ofen gewünschten horizontal strömenden Gasmenge A, B, C, D, E, die Verfahrungsgemäß gesteuert, gegebenenfalls vermindert werden können. 2 shows by way of example the removal of the desired in the oven horizontally flowing gas amount A, B, C, D, E, which can be controlled in accordance with the method, if necessary, can be reduced.

Aufgabe der Erfindung ist es daher ein Verfahren mit Vorrichtung anzugeben, bei dem eine höhere Energieeffizienz bei der Herstellung keramischer Erzeugnisse erzielt wird, das auch für kleinere Produktionsanlagen geeignet ist und eine elektrische Vollversorgung oder darüber hinaus für die Anlage erlaubt. Außerdem sollen die entstehenden Abgase aus ökologischen Gründen einen hohen Reinheitsgrad aufweisen.The object of the invention is therefore to provide a method with device in which a higher energy efficiency is achieved in the production of ceramic products, which is also suitable for smaller production plants and a full electrical supply or beyond for the plant allowed. In addition, the resulting exhaust gases for ecological reasons have a high degree of purity.

Der in Durchlauföfen üblich angewandte horizontale Gasgegenstrom soll teilweise durch den Abgasstrom aus Verbrennungskraftmaschinen, mit denen elektrische Energie erzeugt wird, ersetzt werden.The usual in continuous furnaces horizontal gas countercurrent is to be partially replaced by the exhaust gas flow from internal combustion engines, with which electrical energy is generated.

Es soll im Durchlaufofen nur noch Verbrennungsluft entsprechend dem restlichen Heizbedarf des Durchlaufofens eingesetzt werden.It should be used in the continuous furnace only combustion air corresponding to the remaining heating demand of the continuous furnace.

Ziel der Erfindung ist im einzelnenThe aim of the invention is in detail

  • A) die Erhöhung der Energieeffizienz bei der Herstellung von insbesondere baukeramischen Produkten mit Durchlauföfen mittels Beikopplung von Verbrennungskraftmaschinen welche Stromerzeuger für Eigenstromerzeugung antreiben.A) the increase in energy efficiency in the production of particular structural ceramic products with continuous furnaces by means of coupling of internal combustion engines which power generators for own power generation.
  • B) Leistungssteigerung an Durchlauföfen durch abgestuften Gaslängsstrom im Ofen und vermindertem Gasstrom in der Hochtemperaturzone.B) Increasing the performance of continuous furnaces by graded longitudinal gas flow in the furnace and reduced gas flow in the high-temperature zone.
  • C) Möglichkeit längere Durchlauföfen von höherer Leistung zu errichten mit Vermindertem quantitativem Gasstrom in der beheizten Hochtemperaturzone Zur Herabsetzung des Strömungswiderstandes im Durchlaufofen.C) Possibility to build longer furnaces of higher power with reduced quantitative gas flow in the heated high-temperature zone To reduce the flow resistance in the continuous furnace.
  • D) Kontinuierliches Brennen unter reduzierender Ofenatmosphäre zur Erhöhung der Silikatbildung und Verbesserung der Brennprodukte.D) Continuous firing under reducing furnace atmosphere to increase silicate formation and improve the firing products.
  • E) Vorzugsweiser Einsatz von Gasturbinen zum Antrieb des Stromaggregates zur restlosen Nutzung der hochtemperierten Abgasströme (ca. 500–700°C) zum Wärmetransport für die Längsströmung im Durchlaufofen.E) Preferably use of gas turbines for driving the generator set for the complete use of the high-temperature exhaust gas streams (about 500-700 ° C) for heat transport for the longitudinal flow in a continuous furnace.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Durchlaufofen z. B. TunnelofenContinuous furnace z. B. tunnel kiln
22
BrennwagenBrennwagen
33
Brenngutbe fired
44
Abgaskaminexhaust stack
55
Warmluft aus KühlzoneWarm air from cooling zone
66
Abgas aus Verbrennungskraftmaschine (6a, 6b, 6c)Exhaust gas from internal combustion engine ( 6a . 6b . 6c )
77
Brenneranlageburner system
88th
Längsstrom im DurchlaufofenLongitudinal flow in a continuous furnace
99
Verschlussschieber im DurchlaufofenGate valve in continuous furnace
1010
VerbrennungskraftmaschineInternal combustion engine
1111
Stromerzeugerpower generator
12 12
reversibler Längsstrom im Ofen (DPB 1.288752 oder weiterentwickelte derartige VerfahrenReversible longitudinal flow in the furnace (DPB 1.288752 or further developed such processes
1313
Stromaggregatgenerator

1 beispielhafter Längsschnitt eines Durchlaufofens mit Brennwagen 1 exemplary longitudinal section of a continuous furnace with kiln

2 schematische Darstellung des abgestuften Längsgasstromes im Durchlaufofen 2 schematic representation of the graded longitudinal gas flow in a continuous furnace

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • DE 102011100736 A1 [0001] DE 102011100736 A1 [0001]

Claims (5)

Durchlaufofen (1) zum Brennen von baukeramischen Erzeugnissen mit einer horizontalen Gasströmung (8) im Ofenkanal im Gegenstrom, teilweisem Gleichstrom oder wechselnder Stromrichtung (12), dadurch gekennzeichnet, dass diesem ein Stromaggregat (13) zugeordnet ist und der Durchlaufofen (1) mit dem Abgasstrom (6) des Stromaggregates (13) mindestens teilweise beheizt wird und die Abgasleitung der Verbrennungskraftmaschine (10) des Stromaggregates (13) mit dem Durchlaufofen (1) fest verbunden ist.Continuous furnace ( 1 ) for firing building ceramic products with a horizontal gas flow ( 8th ) in the furnace channel in countercurrent, partial direct current or alternating current direction ( 12 ), characterized in that this is a generator ( 13 ) and the continuous furnace ( 1 ) with the exhaust gas flow ( 6 ) of the generator ( 13 ) is at least partially heated and the exhaust pipe of the internal combustion engine ( 10 ) of the generator ( 13 ) with the continuous furnace ( 1 ) is firmly connected. Durchlaufofen (1) nach Anspruch 1 dadurch gekennzeichnet, dass der in einem Stromaggregat (13) entstehende Abgasstrom (6) in den horizontalen Gasstrom der Anwärmzone E, D eingespeist wird.Continuous furnace ( 1 ) according to claim 1, characterized in that in a power generator ( 13 ) resulting exhaust gas flow ( 6 ) is fed into the horizontal gas flow of the heating zone E, D. Durchlaufofen (1) nach Anspruch 1 und Anspruch 2 dadurch gekennzeichnet, dass der in einem Stromaggregat (13) entstehende Abgasstrom (6) in den horizontalen Gasstrom der Kühl- und/oder Brennzone C eingespeist und in der Feuerzone thermisch gereinigt wird.Continuous furnace ( 1 ) according to claim 1 and claim 2, characterized in that in a power generator ( 13 ) resulting exhaust gas flow ( 6 ) is fed into the horizontal gas flow of the cooling and / or combustion zone C and is thermally cleaned in the fire zone. Durchlaufofen (1) nach Anspruch 1 bis Anspruch 3 dadurch gekennzeichnet, dass der Längsgasstrom (8) im Durchlaufofen (1) in kurzzeitiger rhythmischer Folge als Vor- und Rückbewegung (12) turbulenzerzeugend durch den Durchlaufofen (1) geführt wird.Continuous furnace ( 1 ) according to claim 1 to claim 3, characterized in that the longitudinal gas flow ( 8th ) in a continuous furnace ( 1 ) in short-term rhythmic sequence as forward and backward movement ( 12 ) generating turbulence through the continuous furnace ( 1 ) to be led. Durchlaufofen (1) nach Anspruch 1 bis Anspruch 4 dadurch gekennzeichnet, dass die Antriebsmaschine (10) des Aggregates (13) aus einer Gasturbine besteht mit einem gasförmigen Abgasstrom (6) von höherer Temperatur.Continuous furnace ( 1 ) according to claim 1 to claim 4, characterized in that the drive machine ( 10 ) of the aggregate ( 13 ) consists of a gas turbine with a gaseous exhaust gas stream ( 6 ) of higher temperature.
DE201310001315 2013-01-26 2013-01-26 Exhaust gas-free continuous furnace for heating building ceramic products, has channel, and generator set attached to furnace, where exhaust gas line of internal combustion engine of generator set is fixedly connected with furnace Withdrawn DE102013001315A1 (en)

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DE201310001315 DE102013001315A1 (en) 2013-01-26 2013-01-26 Exhaust gas-free continuous furnace for heating building ceramic products, has channel, and generator set attached to furnace, where exhaust gas line of internal combustion engine of generator set is fixedly connected with furnace

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011100736A1 (en) 2011-05-06 2012-11-08 Andreas Hässler Method for operating e.g. tunnel furnace used for firing brick, involves directing exhaust gas stream from tunnel furnace to waste heat boiler for generating electric power utilized for drying and heating processes of furnace

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011100736A1 (en) 2011-05-06 2012-11-08 Andreas Hässler Method for operating e.g. tunnel furnace used for firing brick, involves directing exhaust gas stream from tunnel furnace to waste heat boiler for generating electric power utilized for drying and heating processes of furnace

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