EP0451046B1 - Lanze zur Pulpendispersion - Google Patents

Lanze zur Pulpendispersion Download PDF

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Publication number
EP0451046B1
EP0451046B1 EP91400891A EP91400891A EP0451046B1 EP 0451046 B1 EP0451046 B1 EP 0451046B1 EP 91400891 A EP91400891 A EP 91400891A EP 91400891 A EP91400891 A EP 91400891A EP 0451046 B1 EP0451046 B1 EP 0451046B1
Authority
EP
European Patent Office
Prior art keywords
orifices
tube
pulp
lance
rotation
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.)
Expired - Lifetime
Application number
EP91400891A
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English (en)
French (fr)
Other versions
EP0451046A1 (de
Inventor
Christian Duez
Jean-Claude Semedard
Jean-Xavier Morin
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.)
Stein Industrie SA
Original Assignee
Stein Industrie SA
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 Stein Industrie SA filed Critical Stein Industrie SA
Publication of EP0451046A1 publication Critical patent/EP0451046A1/de
Application granted granted Critical
Publication of EP0451046B1 publication Critical patent/EP0451046B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/18—Details; Accessories
    • F23C10/22—Fuel feeders specially adapted for fluidised bed combustion apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0458—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber the gas and liquid flows being perpendicular just upstream the mixing chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge

Definitions

  • the present invention relates to a device for projecting and dispersing a pulp by means of a working gas.
  • This device is called here "lance” because it typically has, although not necessarily, an elongated shape.
  • a liquid or pasty product obtained by the mixture of solid and liquid products, more optionally additives intended to reduce the viscosity, is defined by pulp, and such that its setting in motion is possible using pumps. It can be in particular a powder of coal added with water and projected by the lance in a boiler in order to be burned there.
  • pulp lances are also known injecting air at their ends through an annular duct. This air is intended to penetrate and disperse the pulp stream. These lances are not suitable for high viscosities, the air does not penetrate sufficiently into the pulp and a poorly dispersed pulp jet is obtained.
  • the present invention aims in particular to allow a more efficient dispersion of the pulp even in the case where the content of the pulp in liquid is relatively low.
  • a lance which comprises the common elements previously mentioned, cf. preamble of claim 1 appended, and which is characterized by the fact that it comprises two series of dispersion orifices which are a series of disintegration made up of disintegration orifices pierced at a distance from the outlet of the lance so that the gas motor forms disintegration jets towards the axis of the lance, and a series of rotation formed, downstream of said series of disintegration, by rotation orifices introducing oblique jets of said motor gas to drive the pulp in rotation, the series of rotational orifices being separated from the end by an axial distance between 60% and 200% of the internal radius of the central tube, sufficient distance for the working gas to mix at least partially with the pulp before it leaves by driving it in rotation, and at the same time small enough that this pulp retains, until it leaves the central tube, a large fraction of the e rotational energy thus acquired.
  • Figure 1 shows an overall elevational view of a lance according to the present invention.
  • FIG. 2 represents a view in axial section of the nose constituted by an extreme upstream section of this lance.
  • Figure 3 shows an end view of this lance.
  • Figures 4, 5 and 6 show cross-sectional views of this lance along planes IV-IV, V-V and VI-VI of Figure 2.
  • dispersion orifices are rotation orifices 4. They are distributed circumferentially and have, respectively, lengths sufficient to form, from the working gas, rotation jets directed and centered on axes of these holes. These axes are oblique. More precisely, they have, with respect to the radial directions of the lance, and in transverse planes of the lance, components of inclination sufficient for a circumferential component of the speed of the rotation jets to cause the pulp to rotate rapidly. in the central tube.
  • this central tube is located from the end of this central tube at a distance sufficient for this motive gas to mix at least partially with this pulp before it leaves, causing it to rotate, this distance being at the same time sufficiently short time for this pulp to retain, until it leaves this central tube, a large fraction of the rotational energy thus acquired. It then presents a rapid rotation which expands the jet of pulp in it giving a conical shape. More particularly, this distance is between 60% and 200% of the radius of the central tube 1, and preferably between 75% and 150% of this radius. More particularly still, it is advantageously substantially equal to this radius.
  • a central cylindrical tube 1 having an internal radius of 32.5 mm and a thickness of 5 mm, and a concentric annular conduit 2 which is closed on the end of the tube 1, completely or with a slight game, and which forms by a sleeve 2A fixed on the tube 1.
  • the pulp circulates in the central tube 1 under a pressure of 5000 Pascals supplied by a pump 12 which constitutes said means for supplying pulp.
  • the engine gas circulates in the annular conduit 2. It is constituted by air which is compressed by a compressor 14 which supplies a pressure of 30,000 Pascals and which constitutes said gas supply means. It is injected into the pulp at the end of the lance through three series of calibrated orifices, 3, 4 and 5 opening into the central tube. Each of these series is formed of orifices distributed circumferentially in a transverse plane.
  • a series of orifices 3 constitutes the disintegration orifices. It is intended to inject the engine gas inside the pulp column so as to disintegrate it.
  • the axes of these orifices are preferably at least radial or oriented so as to penetrate the interior of a fictitious cylinder concentric with the pulp duct, and with a radius less than or equal to 1/3 of that of the central tube.
  • These orifices have, for example, a diameter of 6.5 mm and are 5 in number.
  • Another series of orifices 4 constitutes the rotational orifices. It is intended to inject the engine gas tangentially to the pulp flow. The gas then gives the pulp a high speed of rotation and creates a film of pulp on the inner surface of the central tube 1. This film of pulp will burst and flourish in the form of a cone leaving the outlet 1B of spear.
  • the axes 4B of these orifices are tangent to a fictitious circle 4A with a radius between 3/4 and 1/6 of the radius of the central tube 1.
  • These orifices have, for example, a diameter of 6.5 mm and are 10 in number.
  • a series of peeling orifices 5 is added in order to create a thin sheath of gas around the pulp to facilitate its flow.
  • These orifices are arranged upstream of the disaggregation and rotation series. They have for example a diameter of 3 mm and are 6 in number.
  • a clearance 6 is maintained between the end of the sleeve 2A and the central tube 1. This clearance is between 0.01 times and 0.1 times the inside radius of the central tube.
  • the gas jet passing through this set is intended to project any pulp drops away. This play is only maintained in the lower part of the lance when the latter is in a horizontal position or close to the horizontal and then extends over an arc whose angle in the center is at least 60 degrees.
  • the present invention is particularly suitable for injecting carbon pulp or carbonaceous material into furnaces of a fluidized bed boiler because, thanks to the speed of rotation imparted to the pulp by the working gas, it develops a jet with a dispersion important and allows a good distribution of the pulp in the hearth of the boiler.
  • This lance is then executed either in refractory steel or in ceramic to limit wear due to temperature and abrasion by solid particles of the pulp.
  • the lance given in example was intended for an injection of pulp in a fluidized bed boiler under atmospheric pressure, the invention also applies to an injection in pressurized enclosures and in particular, in fluidized beds or pressurized gasifiers.
  • the total pulp flow rate is for example 20 m3 / h and the air flow rate of 700 m3 / h.
  • the pulp has for example a viscosity such that, in a 100 mm diameter pipe, the pressure drop at a flow rate of 10 m3 / h, is between 100 to 100,000 Pascals.
  • viscosities are very different from those of certain fuels known in the art which are not pulps and which are called “coal water slurry fuel” that is to say “fuel based on coal slurry -eau “or” Coal Water Mixture “(CWM) that is to say” coal-water mixture ".
  • the viscosity of these known fuels is such that, in a pipe with a diameter of 100 mm, the pressure drop at a flow rate of 10 m3 / h is typically 20 Pascals and in all cases less than 70 Pascals.
  • a known lance adapted to the dispersion of such a fuel is described in the document JP-A-61-83817 cited above, Patent Abstracts of Japan vol. 10, no.257 (Babcock Hitachi K.K.). It comprises a particle separation chamber according to their diameters in which an emulsion formed by this fuel and water vapor is driven in rotation by holes tangentially injecting water vapor.
  • the fuel thus emulsified and separated passes through an axial outlet orifice 25 and peripheral orifices 24 whose diameter would be too small if it were a question of dispersing a carbon pulp.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Paper (AREA)
  • Air Transport Of Granular Materials (AREA)

Claims (9)

  1. Pulpendispersionslanze, mit:
    - einem zentralen Rohr (1), das sich ohne Querschnittsverminderung in Längsrichtung entlang einer Lanzenachse (1C) erstreckt, um eine Pulpe vom Pulpeneinlaß (1A) am vorderen Ende des Rohres zum Lanzenauslaß (1B) an einem Ende des Rohres zu befördern,
    - einer Pulpespeiseeinrichtung (12) zur Versorgung des Pulpeneinlasses,
    - einem Gaskanal (2),
    - einer Gasspeiseeinrichtung (14) zum Einleiten eines unter Druck stehenden Treibgases in den stromaufwärts gelegenen Abschnitt des Gaskanals,
    - und Dispersionslöcher (3, 4), die die Wand des zentralen Rohres durchdringen, um das Treibgas aus dem Gaskanal in das Rohr einzuleiten, derart, daß die Pulpe dispergiert und beschleunigt wird, damit sie am Auslaß des Rohres einen Strahl bildet, dadurch gekennzeichnet, daß die Lanze zwei Dispersionslochreihen aufweist, bestehend aus einer Aufschließungslochreihe mit Aufschließungslöchern (3), welche im Abstand zum Auslaß der Lanze (1B) gebohrt sind, damit das Treibgas zur Achse der Lanze hin gerichtete Aufschließungsstrahlen bildet, und aus einer die Drehung der Pumpe bewirkenden Lochreihe bestehen, die hinter der Aufschließungsreihe durch die Drehung bewirkende Löcher (4) gebildet wird und schräg gerichtete Strahlen des Treibgases einbläst, um die Pulpe in Drehung zu versetzen, wobei die Reihe der die Drehung bewirkenden Löcher (4) vom Ende (1B) durch einen axialen Abstand zwischen 60 % und 200 % des inneren Halbmessers des zentralen Rohres getrennt ist und dieser Abstand ausreicht, damit sich das Treibgas zumindest teilweise mit der Pulpe vor dessen Austritt vermischt, indem sie sie in Drehung versetzt, und wobei der Abstand zugleich genügend gering ist, damit die Pulpe bis zum Austritt aus dem zentralen Rohr einen erheblichen Teil der so gewonnenen Rotationsenergie beibehält.
  2. Lanze nach Anspruch 1, dadurch gekennzeichnet, daß der axiale Abstand der die Drehung bewirkenden Löcher (4) vom Ende (1B) des zentralen Rohres (1) zwischen 75 % und 150 % des inneren Halbmessers des Rohres beträgt.
  3. Lanze nach Anspruch 2, dadurch gekennzeichnet, daß der axiale Abstand der die Dehnung bewirkenden Löcher (4) vom Ende (1B) des zentralen Rohres (1) im wesentlichen dem inneren Halbmessers des Rohres entspricht.
  4. Lanze nach Anspruch 1, dadurch gekennzeichnet, daß die Achsen (4B) der die Drehung bewirkenden Löcher (4) mindestens zweimal so weit von der Lanzenachse (1C) entfernt vorbeilaufen wie die Achsen (3A) der Aufschließungslöcher (3).
  5. Lanze nach Anspruch 1, dadurch gekennzeichnet, daß die Achsen (4B) der die Drehung bewirkenden Löcher (4) einen Zylinder (4A) tangieren, der koaxial zum zentralen Rohr (1) verläuft und einen Halbmesser zwischen 16 % und 75 % des Innenhalbmessers des Rohres besitzt.
  6. Lanze nach Anspruch 1, dadurch gekennzeichnet, daß die Aufschließungslochreihe (3) von der die Drehung bewirkenden Lochreihe (4) durch einen axialen Abstand zwischen 20 % und 40 % inneren Halbmessers des zentralen Rohres (1) getrennt ist.
  7. Lanze nach Anspruch 1, dadurch gekennzeichnet, daß das Massendurchsatzverhältnis des Treibgases und der zu dispergierenden Pulpe zwischen 0,005 und 0,4 beträgt.
  8. Lanze nach Anspruch 1, mit einer Achse (1C), die von der Senkrechten abweicht, dadurch gekennzeichnet, daß außerhalb des Endes des zentralen Rohres (1) eine axiale Austrittslücke für das Treibgas (6) nur in einem unteren Abschnitt des Umfanges des Rohres gebildet ist.
  9. Lanze nach Anspruch 8, dadurch gekennzeichnet, daß sich die Austrittslücke (6) über einen Bogen von mindestens 60° erstreckt.
EP91400891A 1990-04-02 1991-04-02 Lanze zur Pulpendispersion Expired - Lifetime EP0451046B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9004200A FR2660215B1 (fr) 1990-04-02 1990-04-02 Lance de dispersion de pulpe.
FR9004200 1990-04-02

Publications (2)

Publication Number Publication Date
EP0451046A1 EP0451046A1 (de) 1991-10-09
EP0451046B1 true EP0451046B1 (de) 1993-10-13

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ID=9395361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91400891A Expired - Lifetime EP0451046B1 (de) 1990-04-02 1991-04-02 Lanze zur Pulpendispersion

Country Status (6)

Country Link
US (1) US5188296A (de)
EP (1) EP0451046B1 (de)
DE (1) DE69100493T2 (de)
ES (1) ES2046867T3 (de)
FI (1) FI98406C (de)
FR (1) FR2660215B1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9111224U1 (de) * 1991-09-10 1993-01-21 Siemens Ag, 8000 Muenchen, De
US5722802A (en) * 1995-06-09 1998-03-03 Low Emission Paint Consortium Powder delivery apparatus
DE19614192A1 (de) * 1996-04-10 1997-10-16 Abb Research Ltd Dispergiersystem für eine Pulversprüheinrichtung
US6053420A (en) * 1996-04-10 2000-04-25 Abb Research Ltd. Dispersion apparatus and process for producing a large cloud of an electrostatically charged powder/air mixture
US6485284B1 (en) * 1997-11-06 2002-11-26 Matsys Gas assisted flow tube and filling device
US6915966B2 (en) * 2003-01-29 2005-07-12 Specialty Minerals (Michigan) Inc. Apparatus for the gunning of a refractory material and nozzles for same
US7854397B2 (en) * 2005-01-21 2010-12-21 Specialty Minerals (Michigan) Inc. Long throw shotcrete nozzle
US8453945B2 (en) 2005-05-06 2013-06-04 Dieter Wurz Spray nozzle, spray device and method for operating a spray nozzle and a spray device
DE102006009147A1 (de) * 2006-02-24 2007-08-30 Wurz, Dieter, Prof. Dr.-Ing. Zweistoffdüse mit Weitwinkelstrahl
DE102007003665B4 (de) * 2006-08-09 2017-08-31 Martin GmbH für Umwelt- und Energietechnik Düse zum Einbringen und Dosieren eines Behandlungsmediums in den Abgasstrom bei Verbrennungsprozessen
PL2061605T3 (pl) * 2006-08-28 2014-08-29 Air Prod & Chem Urządzenie i sposób kontrolowania prędkości przepływu cieczy kriogenicznej przez dyszę
US20080110804A1 (en) * 2006-11-10 2008-05-15 Veltri Fred J Slurry transfer line
US9873096B2 (en) * 2009-12-29 2018-01-23 Indian Oil Corporation Limited Feed nozzle assembly
WO2012004642A1 (en) * 2010-03-26 2012-01-12 Philip Morris Products S.A. Apparatus for use in the formation of a tobacco pouch product
CN102454984B (zh) * 2010-11-01 2013-09-18 烟台龙源电力技术股份有限公司 一种风道点火系统及床下点火燃烧器
PL3161109T3 (pl) * 2014-06-27 2019-04-30 Tubitak Układ podawania węgla
CN108660857B (zh) * 2018-05-31 2023-08-08 河南大指造纸装备集成工程有限公司 一种造纸化学品在线注入器及其使用方法
EP3821952A4 (de) * 2018-07-09 2022-02-09 Juan José Soriano Azorin System zur bildung und abgabe von flüssigkeiten in gelform mittels einer lanze mit einer venturivorrichtung
CZ2018688A3 (cs) * 2018-12-10 2020-04-15 Vysoká Škola Báňská - Technická Univerzita Ostrava Zařízení pro dávkování kalů do fluidního ohniště

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3840181A (en) * 1970-12-23 1974-10-08 Wintershall Ag Installation for burning combustible mixtures

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1451063A (en) * 1923-04-10 Burner
US857096A (en) * 1902-11-04 1907-06-18 Alvin C Mccord Conveying system.
US1051905A (en) * 1910-03-09 1913-02-04 Alvin C Mccord Conveying system.
GB685420A (en) * 1950-09-30 1953-01-07 Basic Refractories Inc Nozzle for the projection of granular material
US2946628A (en) * 1958-01-09 1960-07-26 Frank A Bauregger Sand booster
US3897007A (en) * 1973-09-10 1975-07-29 Joseph G Roy Apparatus for atomizing liquid fuels for the combustion process
US4011995A (en) * 1975-04-09 1977-03-15 Otis Engineering Corporation Burner nozzle assembly
SU751940A2 (ru) * 1978-03-13 1980-07-30 Центральный Научно-Исследовательский И Проектно-Экспериментальный Институт Организации,Механизации И Технической Помощи Строительству Установка дл укладки бетонной смеси
JPS6183817A (ja) * 1984-09-28 1986-04-28 Babcock Hitachi Kk 石炭−水スラリ燃料用バ−ナ装置
US4796814A (en) * 1987-09-09 1989-01-10 Construction Forms, Inc. Semi-liquid cementitious spray nozzle apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3840181A (en) * 1970-12-23 1974-10-08 Wintershall Ag Installation for burning combustible mixtures

Also Published As

Publication number Publication date
EP0451046A1 (de) 1991-10-09
FI98406C (fi) 1997-06-10
FR2660215A1 (fr) 1991-10-04
FR2660215B1 (fr) 1995-07-21
FI911566A (fi) 1991-10-03
US5188296A (en) 1993-02-23
FI98406B (fi) 1997-02-28
ES2046867T3 (es) 1994-02-01
DE69100493D1 (de) 1993-11-18
DE69100493T2 (de) 1994-02-17
FI911566A0 (fi) 1991-04-02

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