WO2009155974A1 - Dispositif pour séparer une matière solide et un gaz et installation de fabrication de ciment - Google Patents

Dispositif pour séparer une matière solide et un gaz et installation de fabrication de ciment Download PDF

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Publication number
WO2009155974A1
WO2009155974A1 PCT/EP2008/058102 EP2008058102W WO2009155974A1 WO 2009155974 A1 WO2009155974 A1 WO 2009155974A1 EP 2008058102 W EP2008058102 W EP 2008058102W WO 2009155974 A1 WO2009155974 A1 WO 2009155974A1
Authority
WO
WIPO (PCT)
Prior art keywords
line
helical
gas
spiral
solid
Prior art date
Application number
PCT/EP2008/058102
Other languages
German (de)
English (en)
Inventor
Verena Georg
Detlev Kupper
Luis Lagar Garcia
Andreas Hoppe
Heinz-Werner Thiemeyer
Daniel Klegraf
Thomas Deck
Stefani Richter
Original Assignee
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 Polysius Ag filed Critical Polysius Ag
Priority to PCT/EP2008/058102 priority Critical patent/WO2009155974A1/fr
Publication of WO2009155974A1 publication Critical patent/WO2009155974A1/fr

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 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
    • B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
    • 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

Definitions

  • the invention relates to a device for separating a solid and a gas and a plant for cement production.
  • Cyclone edge deposited particles come into the gas inlet flow of the cyclone.
  • DE 103 09 575 A1 discloses a cyclotron for separating particles from a gas-particle mixture, in which a 90 ° curved intake duct opens into a cyclotron separator, wherein a dividing wall is provided in the intake duct after the bend in order to provide a
  • the invention is therefore based on the object to improve the separation efficiency of the device for separating a solid and a gas.
  • the device according to the invention for the separation of a solid and a gas consists according to a first embodiment substantially of a helical and / or spiral-like line, in which by centrifugal forces a
  • Gas-solid suspension are separated into a stream of solids and a gas stream, one of the end of the helical and / or spiral-like line in communication solid line for discharging the flow of solids and a gas conduit communicating with the end of the helical and / or spiral conduit for draining the gas flow.
  • the device for separating a solid and a gas consists essentially of a helical and / or spiral line in which a gas-solid suspension is separated by centrifugal forces into a solids flow and a gas flow, one with the end the helical and / or spiral-like line in communication solid line for discharging the solids flow and a communicating with the end of the helical and / or spiral-like line gas line for discharging the gas flow.
  • the helical and / or spiral line has a cross-sectional shape which forms a channel or channel-like delimitation to the other stream for at least one of the two streams, wherein the channel or channel-like boundary gradually builds up in the flow direction of the gas-solid suspension ,
  • a line is understood, which is at least partially helical and / or helical.
  • the rotation of the helical and / or spiral-like line can in particular only extend over a smaller angular range, for example 90 °.
  • the mechanical installations or the channel or channel-like delimitation in the flow direction can build up so far that at the end of the helical and / or spiral line two completely separate channels for the
  • Solid stream and the gas stream are present.
  • a deposition chamber communicating with the end of the helical and / or spiral-type conduit is provided, to which the solids conduit for discharging the solids flow and the
  • Gas line are connected to divert the gas flow. Furthermore, a riser can be provided, which is followed by the helical and / or spiral line.
  • the riser is in particular formed as an ascending line and the helical and / or spiral-like line as a descending line, wherein a deflection head is provided between the lines.
  • the mechanical installations or the channel or channel-like delimitation extend through the cross-sectional shape over at least 50%, preferably over at least 75% of the length of the helical and / or spiral line.
  • each stage has a riser, a subsequent helical and / or spiral-like line and a solid line connected to the end of the helical and / or spiral line and a gas line, wherein the gas line of a stage in the riser of the next higher Stage passes and the solid line of a stage in the riser of the next lower level opens.
  • Solid and a gas can be used in particular as a preheater and / or calciner in a plant for cement production.
  • FIG. 2 is a rotated by 90 ° side view of FIG. 1,
  • FIG. 3 is a plan view of the stage of FIG. 1, 4 to 6 cross sections in an upper, middle and a lower portion of the helical or spiral line for illustrating various embodiments of mechanical installations,
  • 11 to 14 further examples of cross-sectional shapes of the helical or spiral line
  • FIG. 15 is a schematic representation of an exemplary embodiment with guide ribs for discharging the solids flow
  • Fig. 20 is a side view of the device with three superposed stages and
  • FIG. 21 is a plan view of the device according to FIG. 20.
  • Fig. 22 is a three-dimensional representation of a plant for cement production.
  • Solid and a gas is, for example, a device for preheating, cooling and / or calcination of fine-grained material in the
  • Cement production It essentially consists of a helical and / or spiral-like line 1, in which by centrifugal forces a gas-solid suspension in a stream of solids 2 and a gas stream 3 is separated, connected to the end of the helical and / or spiral line 1 in communication solid line 4 for discharging the solids flow and a with the end of the helical and / or spiral-like line in communication gas line 5 to
  • a riser 6 and a arranged between the riser 6 and the helical and / or spiral-type conduit 1 deflection head 7 is provided.
  • the end of the helical and / or spiral line 1 opens into a
  • the deposition chamber 8 has, in the connection region to the helical and / or spiral line 1, a cylindrical section which merges into the gas line 5.
  • the gas line 5 can also protrude in the manner of a dip tube in the deposition chamber 8.
  • the lower part of the deposition chamber 8 tapers in a funnel shape and merges into the solid line 4.
  • the helical and / or spiral-like line 1 preferably opens into the deposition chamber 8 at a pitch angle ⁇ with respect to the horizontal of at least 30 °, preferably between 30 ° and 60 °.
  • the gas 3 is discharged at the inner wall of the cylindrical part of the deposition chamber 8 with a twist up into the gas line 5.
  • the obliquely downwardly directed flow into the separation chamber 8 also prevents a superposition of the inlet gas flow with the swirl flow formed in the separation chamber in the region of the mouth of the helical and / or spiral line 1.
  • mechanical installations 9 are provided for the spatial delimitation of the two streams in the helical and / or spiral line, which are in the flow direction of the gas Gradually build up the solid suspension.
  • the mechanical installations 9 for the spatial delimitation of the two streams In each figure, three cross sections through the helical and / or spiral line 1 are shown, wherein in each case a cross section in the upper, middle and lower region of the helical and / or spiral line 1 is shown. In all three embodiments, the internals 9 are formed so that at least at the end of the helical and / or spiral-like line 1, two completely separate sub-channels are formed, so that the solid stream 2 and the gas stream 3 at different locations in the deposition chamber or directly in the solids line
  • the mechanical installations 9 are formed, for example, by at least one partition, which builds up in the flow direction on and on. In the illustrated embodiment, the structure goes so far that there are two completely separate sub-channels.
  • the shape and the required length for the complete construction of the mechanical installations 9 is particularly adapted to the material to be treated, the gas velocities and the centrifugal forces acting.
  • the cross-sectional shape of the helical and / or spiral line 1 is important here.
  • the mechanical internals are expediently dimensioned so that they have curved shapes.
  • the mechanical fittings 9 are preferably installed statically. However, it would also be conceivable that at least a portion of the mechanical internals is movable, thereby enabling fine tuning before or during operation.
  • the delimitation of solids flow and gas flow in the helical or spiral conduit 1 could also be formed by a suitable cross-sectional shape which forms a channel or channel-like delimitation from the other flow for at least one of the two streams. Again, it is envisaged that the gutter or channel-like boundary gradually builds up in the flow direction of the gas-solid suspension.
  • FIG. 10 Such an embodiment is shown in the three cross sections of Fig. 10, wherein from left to right, a section in an upper, middle and a lower portion of the helical or spiral-like line 1 is shown.
  • the cross section of the helical and / or spiral line is rectangular, with the lower left
  • the channel or channel-like delimitation Ia is completely closed at the end of the helical and / or spiral line.
  • FIGS. 11 to 14 show, however, that the channel-like delimitation Ia is not restricted to a rectangular shape. Whether a rectangular, triangular or partially rounded cross-sectional shape for this channel or channel-like boundary Ia into consideration depends on the purpose of use and the gas-solid suspension used. The other geometry of the line 1 is to be considered here.
  • the mechanical installations 9 or the channel-like or channel-like delimitations Ia may extend in particular over at least 50%, preferably over at least 75%, of the length of the helical and / or spiral line 1.
  • the mechanical fittings 9 can also be formed by a plurality of guide ribs 10, as shown schematically in FIG. 15.
  • the guide ribs 10 are expediently arranged where the solid due to the
  • a separator 11 may be provided, for example, a Kammpro f oderl or a Taschenpro fil has (see Figures 16 to 19).
  • the helical or spiral line 1 is expediently dimensioned such that at least at the gas inlet into the line a significant increase in the centrifugal forces acting on the solid takes place. This can be done both by a
  • the cross-sectional shape of the helical or spiral line 1 should expediently have an aspect ratio between 1: 2 and 1: 3.
  • the slope of the helical line 1 is preferably between 40 ° and 80 ° to the horizontal (relative to the center line of the spiral).
  • the helical or spiral line 1 should be steep enough so that the material can drain and does not lie.
  • the radius and / or the slope and / or the cross-sectional shape and / or the cross-sectional size of the helical and / or spiral line 1 changes in the flow direction of the gas-solid suspension.
  • the helical and / or spiral line 1 can be adapted to external conditions. This is particularly advantageous when several stages are interleaved and arranged one above the other.
  • the radius, pitch, cross-sectional shape and / or cross-sectional size can change continuously in the flow direction and / or at least in one section. For example, a radius reduction causes an increase in centrifugal force, while a radius increase corresponds to a decrease in centrifugal force.
  • a radius reduction causes an increase in centrifugal force
  • a radius increase corresponds to a decrease in centrifugal force.
  • the incoming gas stream may come, for example, from one of the following aggregates, plant components or elements:
  • From another unit for the separation of solids from gas streams or dedusting for example from a cyclone, in particular from a
  • a combustion unit such as a rotary kiln
  • Combustion chamber a calciner, a fluidized bed or a hot gas generator;
  • a calciner a fluidized bed or a hot gas generator;
  • an aggregate for heat exchange such as a bulk material cooler or an air-to-air heat exchanger;
  • the escaping gas stream can in particular be supplied to the following units or plant components:
  • Dedusting for example a cyclone or a next preheater stage
  • a combustion unit for example a combustion chamber or a calciner
  • An aggregate for heat exchange such as an air-to-air heat exchanger
  • the separated solids stream can in particular be supplied to one of the following aggregates or plant components:
  • an aggregate for the separation of solids from gas streams or for dedusting for example a cyclone or a next preheater stage;
  • a combustion unit for example a rotary kiln, a combustion chamber or a calciner
  • the devices described above for carrying out chemical and / or physical reactions between a solid and a gas are characterized by a low pressure loss and a high separation efficiency.
  • a very compact design can be realized, which has a significantly reduced height, especially in suspended gas heat exchangers.
  • FIGS 20 and 21 is, for example, a three-stage preheater for cement raw material.
  • Each individual stage can be designed according to the embodiments described above.
  • a solid to be treated in the uppermost stage III is fed via a solids line 4 '"and discharged as treated solids stream 2 from the lowest stage I.
  • the solid line one stage opens in the riser of the next lower stage, while the gas line of one stage merges into the riser of the next higher stage.
  • the gas stream 3 to be supplied to the bottom stage is, for example, the hot exhaust gas of a furnace or of a calciner.
  • the gas stream 3 "discharged in the third stage via the gas line 5" is fed, for example, to a filter or a downstream, highly efficient separator for dedusting
  • the treated solids stream 2 passes, for example, into a calciner or an oven for further processing.
  • FIG. 22 shows a three-dimensional representation of a plant for the heat treatment of fine-grained material in cement production with a rotary kiln 100, a calciner 200 and a preheater 300.
  • the calciner is a three-dimensional representation of a plant for the heat treatment of fine-grained material in cement production with a rotary kiln 100, a calciner 200 and a preheater 300.
  • the calciner shows a three-dimensional representation of a plant for the heat treatment of fine-grained material in cement production with a rotary kiln 100, a calciner 200 and a preheater 300.
  • the calciner shows a three-dimensional representation of a plant for the heat treatment of fine-grained material in cement production with a rotary kiln 100, a calciner 200 and a preheater 300.
  • the preheater 300 may be formed according to the device described in Figures 1 to 21.

Abstract

L'invention concerne un dispositif pour séparer une matière solide et un gaz, ce dispositif comprenant essentiellement une conduite hélicoïdale et/ou en spirale dans laquelle une suspension gaz/matière solide est séparée par des forces centrifuges en un flux de matière solide et un flux de gaz, une conduite de matière solide communiquant avec l'extrémité de la conduite hélicoïdale et/ou en spirale pour évacuer le flux de matière solide, ainsi qu'une conduite de gaz communiquant avec l'extrémité de la conduite hélicoïdale et/ou en spirale pour évacuer le flux de gaz. Par ailleurs, des chicanes mécaniques sont installées dans la conduite hélicoïdale et/ou en spirale pour limiter les deux flux dans l'espace, ces chicanes étant formées graduellement dans le sens d'écoulement de la suspension gaz/matière solide. Dans une variante, la conduite hélicoïdale et/ou en spirale peut présenter également une forme de section qui définit pour au moins un des deux flux une limite du type rigole ou canal vis-à-vis de l'autre flux, cette limite du type rigole ou canal étant formée graduellement dans le sens d'écoulement de la suspension gaz/matière solide.
PCT/EP2008/058102 2008-06-25 2008-06-25 Dispositif pour séparer une matière solide et un gaz et installation de fabrication de ciment WO2009155974A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/058102 WO2009155974A1 (fr) 2008-06-25 2008-06-25 Dispositif pour séparer une matière solide et un gaz et installation de fabrication de ciment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/058102 WO2009155974A1 (fr) 2008-06-25 2008-06-25 Dispositif pour séparer une matière solide et un gaz et installation de fabrication de ciment

Publications (1)

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WO2009155974A1 true WO2009155974A1 (fr) 2009-12-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016035013A1 (fr) 2014-09-02 2016-03-10 Rizzo, Rocco Dispositif de filtrage pour la poussière et d'autres polluants
CN113828066A (zh) * 2021-09-10 2021-12-24 章志远 一种用于天然气供应系统的气固分离及清渣装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2360066A (en) 1940-04-04 1944-10-10 Lavigne Jean Loumiet Et Gas purification system
US4318692A (en) * 1981-01-02 1982-03-09 Allis-Chalmers Corporation Helical duct gas/meal separator
US4318697A (en) 1979-02-02 1982-03-09 Itzhak Shoher Dental restorative anterior structure
DE19738912A1 (de) * 1997-09-05 1999-03-18 Eduard Piepmeyer Vorrichtung und Verfahren zum Abscheiden von Feststoffen aus einem Trägerstrom sowie deren Verwendung
DE10309575A1 (de) * 2003-03-05 2004-09-30 OCé PRINTING SYSTEMS GMBH Zyklotron zur Abscheidung von Partikeln aus einem Gas-Partikel-Gemisch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2360066A (en) 1940-04-04 1944-10-10 Lavigne Jean Loumiet Et Gas purification system
US4318697A (en) 1979-02-02 1982-03-09 Itzhak Shoher Dental restorative anterior structure
US4318692A (en) * 1981-01-02 1982-03-09 Allis-Chalmers Corporation Helical duct gas/meal separator
DE19738912A1 (de) * 1997-09-05 1999-03-18 Eduard Piepmeyer Vorrichtung und Verfahren zum Abscheiden von Feststoffen aus einem Trägerstrom sowie deren Verwendung
DE10309575A1 (de) * 2003-03-05 2004-09-30 OCé PRINTING SYSTEMS GMBH Zyklotron zur Abscheidung von Partikeln aus einem Gas-Partikel-Gemisch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016035013A1 (fr) 2014-09-02 2016-03-10 Rizzo, Rocco Dispositif de filtrage pour la poussière et d'autres polluants
US10376832B2 (en) 2014-09-02 2019-08-13 Rocco Rizzo Filtering device for dust and other pollutants
CN113828066A (zh) * 2021-09-10 2021-12-24 章志远 一种用于天然气供应系统的气固分离及清渣装置

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