WO2014082716A1 - Procédé pour faire fonctionner un régénérateur (réchauffeur à galets) ainsi que le régénérateur lui-même - Google Patents

Procédé pour faire fonctionner un régénérateur (réchauffeur à galets) ainsi que le régénérateur lui-même Download PDF

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Publication number
WO2014082716A1
WO2014082716A1 PCT/EP2013/003483 EP2013003483W WO2014082716A1 WO 2014082716 A1 WO2014082716 A1 WO 2014082716A1 EP 2013003483 W EP2013003483 W EP 2013003483W WO 2014082716 A1 WO2014082716 A1 WO 2014082716A1
Authority
WO
WIPO (PCT)
Prior art keywords
bulk material
regenerator
conveyor
hot
discharged
Prior art date
Application number
PCT/EP2013/003483
Other languages
German (de)
English (en)
Inventor
Christian GÜNTHER
Michael Wahl
Original Assignee
Saarstahl 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 Saarstahl Ag filed Critical Saarstahl Ag
Priority to EP13799205.3A priority Critical patent/EP2926074B1/fr
Publication of WO2014082716A1 publication Critical patent/WO2014082716A1/fr

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Classifications

    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
    • F28D17/005—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using granular particles

Definitions

  • the invention relates to a method for operating a regenerator, for example in the form of a pebble heater, for generating hot blast for a steelmaking / treatment process or a chemical process in which cyclic cold gas and hot gas is passed through a bulk material in each opposite direction, which is located in an annulus between a hot grid and a cold grid surrounding the hot grid, and wherein a lot of bulk material is removed from the annulus in recurring cycles, and a regenerator itself, according to the preamble of claims 1 and 8.
  • Regenerators of this type are, for example, in the
  • regenerators of the type mentioned above have an annular space between an inner hot grid and an outer cold grid, in which the bulk material is contained as a heat transfer medium. Consequently
  • Hot phase hot gases are passed through the bed and the sensible heat stored therein.
  • blowing or cold phase cold gases are conducted in the opposite direction through the bed, whereby the heat is transferred from the bed to the cold gas.
  • Hot grate and cold grate are closed via openings or mesh so that the opening or mesh size is selected so that gases can pass through unhindered, but not the bulk material. That is, the particle or grain size of the bulk material, called Pebbles, is greater than the opening or
  • the hot grid consists of firebricks, or stones made of other refractory materials.
  • the cold grate consists essentially of perforated metal.
  • balls of ceramic material for example made of aluminum oxide are used.
  • Thermal cycling thus means that the bulk material more and more compacted, and thus destroys the hot grid in the long run.
  • Transport gas stream then led back up to the regenerator to refill it there.
  • Transport gas stream are cooled very quickly.
  • the mechanical stress is thus still the strong thermal cycling, which further enhances the erosion of Pebbles.
  • the invention is therefore based on the object
  • the object is in a method of the generic type according to the invention by the
  • the core of the method according to the invention is that from the bulk material in the cold phase or shortly before the phase of H thoroughlygasbeetzschung a defined, determined by measuring means amount of bulk material is discharged through bottom openings of the annular space.
  • the discharged bulk material quantity is passed over a weighing or Greek until the amount of bulk material to be discharged is reached. This means that the amount of discharged bulk material is calculated and measured exactly to the expected thermal expansion, or can be measured.
  • the bulk material i. the pebbles trickle or roll in and out of gravity
  • Conveying system for example, a bucket elevator, or another vertical conveyor such as pocket conveyor or
  • Belt bag conveyor can be.
  • the bulk material can initially in a contained in the conveyor or
  • incoming collecting vessel enter, from where it then can be promoted above the conveyor to the top.
  • the conveyor or the collection container acts as a buffer.
  • a significant additional refinement in this respect is that the bulk material remains stationary in the conveyor or collecting container until the bulk material has cooled completely, before it is then moved on again for backfilling.
  • a gentle, preferably erosion-reduced mechanical treatment of the bulk material during the backfilling can take place, because the bulk material can first cool down completely in the UNWIRED state before it is moved again for refilling. That It is achieved with the fact that the bulk material in the warm state as little as possible moves to erosion in mutual
  • the discharge pipes are taken into account in their volume such that the quantity of bulk material still trickling out after closing slides on the discharge pipe or discharge pipes is automatically taken into account in the desired target quantity.
  • the sliders are located directly at the bottom of the regenerator, or at the top of the discharge lines, they are then closed when the already dehydrated and collected in a cup bulk material plus the still in the drain pipe after closing the slide
  • Bucket elevator is conveyed upwards to a return of bulk material in the annular space of the regenerator. Unlike the prior art described above, the bulk material is not passed through a gas flow through a pipe up, but by a conveyor, for example, a bucket elevator, whereby the bulk material quite considerably
  • the device is considerably simplified in the mode of operation, and it is not necessary to provide a separate mass determination between discharge lines and conveyors.
  • the invention consists in that the discharge opening is connected via a pipe to a conveyor, preferably a vertically mounted bucket elevator, into which the bulk material trickles and from there to
  • Regenerator upwards for the return of the bulk material in the annulus is conveyed, and that the conveyor, for example, a bucket elevator and the slide for draining and for backfilling the discharged bulk material on a control device are operated controlled, in which also the hot and cold cycles of the regenerator are regulated. In this way, the bulk material is gently discharged and transported back.
  • the design of the drain can be determined depending on the temperature and thus controlled in a simple manner. In this way, the
  • bulk particles may have already been discharged in the cold phase or before the hot phase, so that the temperature of the bulk material, i. reduces the pebbles during the discharge, and thus an additional mechanically gentle treatment of the bulk material during the discharge and the backfilling takes place.
  • the discharge amount is dimensioned so that in the
  • Hot phase at least the extent caused in the bulk material and the associated volume change is compensated by the bulk material discharge in this way.
  • the hot grid and cold grid are effectively relieved mechanically in an effective manner.
  • Partial delivery volumes such as cups, bags, etc., containing, over which the discharged bulk material quantity can be determined.
  • Bucket elevator can be filled in the manner described above, and the bucket elevator then the amount of bulk material filled there from the collecting container upwards
  • a bulk material buffer is connected upstream, via which the upward
  • This bulk material buffer is or can also be used as a pressure lock, because in the Transfer and return of the bulk material during the blowing or cold phase is an overpressure. For system operation with significant overpressure in the
  • Hot grid of stones is formed with a polygonal trapezoidal shape in the manner of pie pieces, which are laid in a ring, and thereby a plurality of rings are superimposed.
  • the stones are hollow or hollow drilled and on the hot grid inside the regenerator a hole with a round cross-section and on the annular space of the
  • Regenerators facing outside have a hole with a square cross section, which in turn is closed with a ceramic lattice stone whose mesh size is smaller than the diameter of
  • FIG. 1 shows a regenerator 1 in cross section.
  • the interior 5 of the regenerator 1 is of hot gas
  • the hot grid 2 is of another coat, the
  • Cold grid 3 surrounded. Between hot grid 2 and cold grid 3 thus forms a cylindrical annulus 4, is arranged in the bulk material.
  • ceramic grids are provided which prevent bulk material from entering the hot grid 2 and / or the heated interior space.
  • the cylinder space 4 filled with the bulk material (pebbles) between hot grid 2 and cold grid 3 opens at the bottom in FIG
  • Regenerator 1 upwards conveyed bulk material takes place at the top of the regenerator.
  • FIG. 2 shows the regenerator 1 with the
  • the refilling at the upper end of the regenerator 1 is also in the upper lid 8 arranged there
  • the drain piping 10 are arranged so that under the action of gravity, the bulk material flows down, rolls or trickles. Since a plurality of radially distributed discharge pipes 10 are provided to ensure a uniform discharge of bulk material around the entire circumference of the
  • Collecting container 13 This container is provided with Artmony- or weight determination means. The before the
  • Hot phase to be deducted bulk material is calculated so that it corresponds to the previously determined, caused by thermal expansion of the bulk material volume increase. Will therefore be determined in this regard
  • the conveyor or bucket elevator is set in motion and conveys the discharged bulk material upwards to the upper end of the regenerator 1. There it flows again under the influence of gravity into an intermediate container 16, from where it is redefined, and optionally with at least one further slide via return pipes 17 and 7 directly into the regenerator 1 arranged Interspace 4 between cold grid 3 and hot grid 2 is backfilled.
  • Said intermediate container is advantageously a pressure lock or connected to a pressure lock, or is operated as a pressure lock.
  • FIG. 3 shows a single hot stone 21.
  • Structure of the hot grid consists of these stones, which are stacked in stacked, each staggered rings, stacked ring by ring, like an annular wall.
  • the stones 21 are with
  • the mesh size of the ceramic grid 24 is smaller than the smallest grain size of the bulk material (Pebbles).
  • the ceramic grids 24 are fixed in the bricks 21 with ceramic adhesive.
  • FIG. 4 shows one of hot-wire stones 21
  • the hot grid thus consists of a plurality of superimposed and with each other bonded rings, to a polygonal cylinder tube as shown in Figure 1 as a hot grid 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un régénérateur (1) de production d'air chaud destiné à un processus de traitement ou de fabrication d'acier ou à un processus chimique. Dans le procédé, on fait circuler de façon cyclique un gaz froid et un gaz chaud à travers une matière en vrac qui se trouve dans un espace annulaire (4) entre une grille chaude (2) et une grille froide (3) entourée par la grille chaude (2), une quantité de matière en vrac étant retirée de l'espace annulaire (4) selon des cycles récurrents. L'invention concerne également le régénérateur lui-même. Pour que d'une part la matière en vrac, qui se dilate pendant la phase chaude, ne déforme pas et/ou ne détruise pas la grille froide (3), et pour que d'autre part les grains de matière en vrac ne soient pas davantage érodés lors des cycles thermiques, l'invention propose de retirer pendant la phase d'exposition aux gaz froids ou un peu avant ou un peu après celle-ci, une quantité de matière en vrac définie et déterminée par des moyens de mesure (20), à travers des ouvertures ménagées au fond de l'espace annulaire (4).
PCT/EP2013/003483 2012-11-30 2013-11-19 Procédé pour faire fonctionner un régénérateur (réchauffeur à galets) ainsi que le régénérateur lui-même WO2014082716A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13799205.3A EP2926074B1 (fr) 2012-11-30 2013-11-19 Procédé pour faire fonctionner un régénérateur ainsi que régénérateur lui-même

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012023517.8 2012-11-30
DE102012023517.8A DE102012023517A1 (de) 2012-11-30 2012-11-30 Verfahren zum Betrieb eines Regenerators (Pebble Heater) sowie Regenerator selbst

Publications (1)

Publication Number Publication Date
WO2014082716A1 true WO2014082716A1 (fr) 2014-06-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/003483 WO2014082716A1 (fr) 2012-11-30 2013-11-19 Procédé pour faire fonctionner un régénérateur (réchauffeur à galets) ainsi que le régénérateur lui-même

Country Status (3)

Country Link
EP (1) EP2926074B1 (fr)
DE (1) DE102012023517A1 (fr)
WO (1) WO2014082716A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016015840A1 (fr) * 2014-07-31 2016-02-04 Karl Brotzmann Consulting Gmbh Procédé et dispositif de réception, de stockage et de délivrance d'énergie thermique provenant de gaz
WO2017134177A1 (fr) * 2016-02-03 2017-08-10 Karl Brotzmann Consulting Gmbh Procédé et dispositif pour capter, stocker et restituer de l'énergie thermique issue de gaz

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021129810A1 (de) 2021-11-16 2023-05-17 HiTES Holding GmbH Verfahren und Vorrichtung zum Erzeugen von Wasserstoff
DE102021129804A1 (de) 2021-11-16 2023-05-17 HiTES Holding GmbH Verfahren und Vorrichtung zum Erzeugen von Wasserstoff
DE102021129812A1 (de) 2021-11-16 2023-05-17 HiTES Holding GmbH Verfahren und Vorrichtung zum Erzeugen von Wasserstoff

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2272108A (en) 1940-01-19 1942-02-03 Research Corp Regenerative stove
EP0373450A1 (fr) * 1988-12-10 1990-06-20 Klöckner Cra Patent Gmbh Procédé et appareil échangeur de chaleur de régénération pour le chauffage de gaz
EP0908692A2 (fr) 1997-10-08 1999-04-14 ATZ-EVUS Applikations- und Technikzentrum für Energieverfahrens-, Umwelt- und Strömungstechnik Procédé de fonctionnement d'un régénérateur et régénérateur
EP1717210A1 (fr) * 2005-04-25 2006-11-02 Siemens Aktiengesellschaft Procédé pour l'optimisation d'un procédé de combustion

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US253535A (en) * 1882-02-14 Device for cooling dwellings
DE10145907A1 (de) * 2001-09-18 2003-04-03 Coperion Waeschle Gmbh & Co Kg Schleuse für Schüttgut
AT501790B1 (de) * 2005-04-20 2008-01-15 Helmut Simon Ing Orgler Zellenradschleuse zur förderung von schüttgut

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2272108A (en) 1940-01-19 1942-02-03 Research Corp Regenerative stove
EP0373450A1 (fr) * 1988-12-10 1990-06-20 Klöckner Cra Patent Gmbh Procédé et appareil échangeur de chaleur de régénération pour le chauffage de gaz
EP0908692A2 (fr) 1997-10-08 1999-04-14 ATZ-EVUS Applikations- und Technikzentrum für Energieverfahrens-, Umwelt- und Strömungstechnik Procédé de fonctionnement d'un régénérateur et régénérateur
EP1717210A1 (fr) * 2005-04-25 2006-11-02 Siemens Aktiengesellschaft Procédé pour l'optimisation d'un procédé de combustion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016015840A1 (fr) * 2014-07-31 2016-02-04 Karl Brotzmann Consulting Gmbh Procédé et dispositif de réception, de stockage et de délivrance d'énergie thermique provenant de gaz
WO2017134177A1 (fr) * 2016-02-03 2017-08-10 Karl Brotzmann Consulting Gmbh Procédé et dispositif pour capter, stocker et restituer de l'énergie thermique issue de gaz

Also Published As

Publication number Publication date
EP2926074B1 (fr) 2017-08-30
EP2926074A1 (fr) 2015-10-07
DE102012023517A1 (de) 2014-06-05

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