EP0037460A1 - Verfahren und Vorrichtung zur Druckregelung und Fluidisierung einer pulverförmigen Masse in einem Verteilungsgefäss - Google Patents

Verfahren und Vorrichtung zur Druckregelung und Fluidisierung einer pulverförmigen Masse in einem Verteilungsgefäss Download PDF

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Publication number
EP0037460A1
EP0037460A1 EP81101434A EP81101434A EP0037460A1 EP 0037460 A1 EP0037460 A1 EP 0037460A1 EP 81101434 A EP81101434 A EP 81101434A EP 81101434 A EP81101434 A EP 81101434A EP 0037460 A1 EP0037460 A1 EP 0037460A1
Authority
EP
European Patent Office
Prior art keywords
enclosure
pressure
gas
intermediate tank
circuit
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.)
Granted
Application number
EP81101434A
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English (en)
French (fr)
Other versions
EP0037460B1 (de
Inventor
Léon Ulveling
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.)
Paul Wurth SA
Original Assignee
Paul Wurth 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 Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT81101434T priority Critical patent/ATE4914T1/de
Publication of EP0037460A1 publication Critical patent/EP0037460A1/de
Application granted granted Critical
Publication of EP0037460B1 publication Critical patent/EP0037460B1/de
Expired legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B5/003—Injection of pulverulent coal

Definitions

  • the present invention relates to a method and a device for regulating the pressure and fluidization of a pulverulent mass in a pressure distribution enclosure which is provided, on the downstream side with a series of orifices for extracting the pulverulent material and connected, on the upstream side, to an intermediate powder supply tank which is designed as an airlock to be alternately ventilated and put under a pressure substantially equal to or greater than the pressure in said enclosure and to be placed in communication with the latter.
  • the invention relates more particularly to an installation of the type described in Luxembourg patent No 81 388, designed for the injection of coal or lignite powder into a blast furnace.
  • the coal or lignite powder is extracted through the bottom of the enclosure through the extraction orifices provided with blast chambers with a cellular rotor to be then conveyed pneumatically to each of the blast furnace nozzles and be injected into it.
  • the pressure inside this distribution enclosure must be greater than the pneumatic transport pressure downstream from these airlocks.
  • a gas in particular pressurized air
  • the pressurized air is evacuated from the enclosure through a self-regulating pressure valve, adjusted so as to release towards the atmosphere the quantity of air necessary and sufficient to ensure the desired pressure inside the pregnant.
  • the object of the present invention is a new process for fluidizing the pulverulent mass in the enclosure and for regulating the pressure inside it, which does not have the drawback mentioned above, that is to say that is to say a process whose implementation is possible, even with a modest consumption of compressed air.
  • the invention also relates to a device for ensuring the implementation of this method.
  • the method according to the present invention is essentially characterized in that, at least during a first phase corresponding to the isolation of the intermediate reservoir from the distribution enclosure, a gas is injected into it. pressure, in that this gas is recycled by filtering and compressing the gas discharged from this enclosure, and by reinjecting it therein, and in that, during a second phase, corresponding to the communication of the intermediate tank with the distribution enclosure, a forced circulation of a pressurized gas is established which is injected into the intermediate tank, which is evacuated from the pressure enclosure and which is filtered and compressed before reinjecting it into the intermediate container.
  • the same gas is used for this purpose during the two phases, by sending the gas discharged from the distribution enclosure alternately into the intermediate tank and into the distribution enclosure.
  • the distribution enclosure is periodically connected to an additional source of pressurized gas to compensate for the losses.
  • the installation for the implementation of this pro assigned comprises a first circuit connecting a discharge opening provided in the upper part of the enclosure to a pressure gas inlet opening provided in the lower part of this enclosure and a second circuit connecting said discharge opening at the intermediate reservoir, the first and second circuits having a common branch in which at least one filter and a booster are provided, while in each of the separate branches of the first and second circuits is provided a valve for regulating the circulation of gases in each of the two circuits.
  • reference 2 represents an enclosure in which a pulverulent material, for example, coal or lignite powder, is stored for injection into an oven 10, for example a blast furnace.
  • the pulverulent material is extracted from the enclosure 2 through a series of blast chambers with a cellular rotor represented by the reference 4, while the transport and the injection are carried out ! pneumatically through a pipe 6 supplied with a propulsion fluid sent by a compressor 8.
  • the reference 12 designates an intermediate reservoir used to fill the enclosure 2.
  • the communication between the reservoir 12 and the enclosure 2 is established through a pair of valves 14 and 16, automatically controlled by a level detection system minimum and of a maximum level, represented diagrammatically by 18, in the enclosure 2.
  • a level detection system minimum and of a maximum level represented diagrammatically by 18, in the enclosure 2.
  • the latter is isolated from the enclosure 2 by closing the valves 14 and 16 to be ventilated through a valve 20.
  • the pressure in the enclosure 2 must be is greater than the pressure in the oven 10, while the pressure in the tank 12, when filling the enclosure 2 must be at least equal to the pressure in this enclosure.
  • gas preferably air
  • a pipe 22 In order to maintain sufficient pressure in enclosure 2 and in order to ensure optimal fluidization of the pulverulent mass, gas, preferably air, under pressure is injected into this enclosure 2 through a pipe 22.
  • the adjustment pressure inside the enclosure 2 is ensured through a self-regulating pressure valve 28 intended to connect the enclosure 2 through a filter 24 to the atmosphere.
  • This valve 28 is calibrated on a set pressure and opens automatically as soon as the pressure inside the enclosure 2 exceeds this value.
  • a recycling line 30 is provided, connected between the filter 24 and the auto valve. -pressure regulator 28.
  • This pipe 30 recycles the excess air towards the pipe 22, so as to establish a closed circuit.
  • the circulation in this recycling pipe 30 is controlled by means of a valve 26 mounted above the filter 24.
  • a booster 32 is provided in the pipe 30.
  • An auxiliary pipe 34 furthermore connects the pipe 30, from a point located downstream of the booster 32, to the intermediate tank 12.
  • the pressurized air recycled through the pipe 30 can therefore be sent either through the line 22 in enclosure 2 or through line 34 in tank 12, control in one and / or the other of the two lines 22, 34 being ensured by a pair of valves 36 and 38 provided respectively in the lines 22 and 34.
  • the recycling pipe 30 is connected through a booster pipe 40 to the compressor 8.
  • the recycling circuit is supplied by an automatic valve 42.
  • non-return valve 42, 44, 46 and 48 are each provided with a non-return valve represented by 42, 44, 46 and 48 respectively.
  • the valves 14 and 16 are open to establish communication between the reservoir 12 and the enclosure 2.
  • the recycling pipe 30 is connected through the pipe 34 to the reservoir 12, by opening the valve 38.
  • the valve is completely or only partially closed 36, that is to say that the air recycled through the pipe 30 is sent totally or partially through the pipe 34 in the reservoir 12 to ensure the flow of the pulverulent material towards the enclosure 2.
  • the valves 14 and 16 are closed.
  • the valve 38 is closed to disconnect the pipe 30 and ensure complete recycling of the pressurized air through line 22 in the pregnant 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Air Transport Of Granular Materials (AREA)
EP19810101434 1980-04-04 1981-02-27 Verfahren und Vorrichtung zur Druckregelung und Fluidisierung einer pulverförmigen Masse in einem Verteilungsgefäss Expired EP0037460B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81101434T ATE4914T1 (de) 1980-04-04 1981-02-27 Verfahren und vorrichtung zur druckregelung und fluidisierung einer pulverfoermigen masse in einem verteilungsgefaess.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU82336A LU82336A1 (fr) 1980-04-04 1980-04-04 Procede et dispositif de pression et de fluidisation d'une masse pulverulente dans une enceinte de distribution
LU82336 1980-04-04

Publications (2)

Publication Number Publication Date
EP0037460A1 true EP0037460A1 (de) 1981-10-14
EP0037460B1 EP0037460B1 (de) 1983-10-05

Family

ID=19729384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810101434 Expired EP0037460B1 (de) 1980-04-04 1981-02-27 Verfahren und Vorrichtung zur Druckregelung und Fluidisierung einer pulverförmigen Masse in einem Verteilungsgefäss

Country Status (12)

Country Link
US (1) US4395166A (de)
EP (1) EP0037460B1 (de)
JP (1) JPS56149918A (de)
AR (1) AR223420A1 (de)
AT (1) ATE4914T1 (de)
AU (1) AU6909481A (de)
BR (1) BR8102072A (de)
DE (1) DE3161075D1 (de)
ES (1) ES8206631A1 (de)
LU (1) LU82336A1 (de)
PL (1) PL230322A1 (de)
ZA (1) ZA811899B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0611212A1 (de) * 1993-02-12 1994-08-17 Isover Saint-Gobain Einbringen von pulverartigen Zusatzstoffen in einen Ofen
CN102626685A (zh) * 2012-04-28 2012-08-08 广州卓迅包装机械有限公司 增压喷射供粉系统

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501833B1 (fr) * 1981-03-10 1985-05-31 Stein Industrie Dispositif d'introduction et de combustion d'un combustible solide pulverise dans une enceinte sous pression
LU84390A1 (de) * 1982-09-27 1984-04-24 Arbed Verfahren und einrichtung zum beheizen eines mit schrott beschickten stahlbades
LU84444A1 (fr) * 1982-10-27 1984-05-10 Arbed Systeme de reglage de l'alimentation en matieres solides d'une lance de soufflage
DE3245567C2 (de) * 1982-12-09 1985-04-18 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zum Vergasen kohlehaltiger Agglomerate im Festbett
JPS59115981A (ja) * 1982-12-22 1984-07-04 川崎製鉄株式会社 精錬炉等への粉粒体吹込み方法およびその装置
DE3578860D1 (de) * 1984-10-23 1990-08-30 Toshiba Kawasaki Kk Transportsystem vom typ mit schwebendem traeger.
US7488141B2 (en) * 2004-07-14 2009-02-10 Halliburton Energy Services, Inc. Automated control methods for dry bulk material transfer
DE202011051916U1 (de) * 2011-11-10 2012-11-15 Viessmann Werke Gmbh & Co Kg Speichervorrichtung
LU92037B1 (fr) * 2012-07-06 2014-01-07 Wurth Paul Sa Dispositif de depressuration d'un reservoir sous pression de stockage de matiere granuleuse ou pulverulente, et installation de distribution de matiere pulverulente par transport pneumatique comportant un tel dispositif
FI124217B (en) * 2012-08-27 2014-05-15 Outotec Oyj ARRANGEMENTS FOR SUPPLYING A GRINDING SUBSTANCE TO A SUSPENSION FROZEN OVEN OR A STONE BURNER

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE630649A (de) * 1962-04-05
US3762773A (en) * 1972-06-30 1973-10-02 W Schroeder Method and apparatus for feeding finely divided solids to a pressurized gas or gasliquid solids system
US4067623A (en) * 1974-04-02 1978-01-10 Polysius Ag Pneumatic pressure conveyor for fine material
DE2538785C3 (de) * 1975-09-01 1978-09-14 2000 Hamburg Vorrichtung zur Einsparung von Druckgas beim Einblasen von Feststoffen mit Hilfe von Druckgefäßförderern
LU81388A1 (fr) * 1979-06-15 1979-09-12 Wurth Paul Sa Procede et installation de dosage et de transport par voie pneumatique de matieres solides vers une enceinte sous pression
LU81581A1 (fr) * 1979-08-07 1979-12-07 Wurth Anciens Ets Paul Procede et installation de dosage et de transport par voie pneumatique de matieres solides vers une enceinte sous pression

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0611212A1 (de) * 1993-02-12 1994-08-17 Isover Saint-Gobain Einbringen von pulverartigen Zusatzstoffen in einen Ofen
CN102626685A (zh) * 2012-04-28 2012-08-08 广州卓迅包装机械有限公司 增压喷射供粉系统

Also Published As

Publication number Publication date
ES500661A0 (es) 1982-09-01
ES8206631A1 (es) 1982-09-01
LU82336A1 (fr) 1980-07-02
DE3161075D1 (en) 1983-11-10
BR8102072A (pt) 1981-10-06
JPS56149918A (en) 1981-11-20
AR223420A1 (es) 1981-08-14
ZA811899B (en) 1982-04-28
US4395166A (en) 1983-07-26
ATE4914T1 (de) 1983-10-15
PL230322A1 (de) 1981-11-13
EP0037460B1 (de) 1983-10-05
AU6909481A (en) 1981-10-08

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