EP0037460B1 - 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 PDFInfo
- Publication number
- EP0037460B1 EP0037460B1 EP19810101434 EP81101434A EP0037460B1 EP 0037460 B1 EP0037460 B1 EP 0037460B1 EP 19810101434 EP19810101434 EP 19810101434 EP 81101434 A EP81101434 A EP 81101434A EP 0037460 B1 EP0037460 B1 EP 0037460B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- enclosure
- pressure
- gas
- accordance
- intermediate tank
- 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
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Classifications
-
- 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 patent LU-A-81,388, designed for the injection of coal or lignite powder into a blast furnace.
- the coal or lignite powder is extracted by 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 nozzles of the blast furnace and be injected into it.
- 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 implementing this method 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 to the intermediate tank, the first and the second circuit 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 to regulate 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 line 6 ali driven by 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 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
- gas is injected into this enclosure 2 under pressure 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 pipe 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 pipe 2 9 in the enclosure 2 either through the pipe 34 in the tank 12, the control in one and / or the other of the two pipes 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 tank 12 to ensure. the flow of the pulverulent material towards the enclosure 2.
- the valves 14 and 16 are closed.
- the valve 38 to disconnect the pipe 30 and ensure complete recycling of the pressurized air through the pipe 22 in the enclosure 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)
Claims (9)
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 EP0037460A1 (de) | 1981-10-14 |
EP0037460B1 true 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) | ES500661A0 (de) |
LU (1) | LU82336A1 (de) |
PL (1) | PL230322A1 (de) |
ZA (1) | ZA811899B (de) |
Families Citing this family (12)
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 |
EP0179188B1 (de) * | 1984-10-23 | 1990-07-25 | Kabushiki Kaisha Toshiba | Transportsystem vom Typ mit schwebendem Träger |
IT1263909B (it) * | 1993-02-12 | 1996-09-05 | Balzaretti Modigliani Spa | Introduzione di addittivi polverulenti nelle tubiere che alimentano un forno con comburente |
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 |
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 |
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 FINE-CORN SUBSTANCE TO A SLEEVE OR STONE BURNER OF A SUSPENSION MELTED OVEN |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3150962A (en) * | 1962-04-05 | 1964-09-29 | Babcock & Wilcox Co | Pulverized coal firing method and system for blast furnace |
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 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
1980
- 1980-04-04 LU LU82336A patent/LU82336A1/fr unknown
-
1981
- 1981-02-27 DE DE8181101434T patent/DE3161075D1/de not_active Expired
- 1981-02-27 EP EP19810101434 patent/EP0037460B1/de not_active Expired
- 1981-02-27 AT AT81101434T patent/ATE4914T1/de not_active IP Right Cessation
- 1981-03-10 AR AR28457181A patent/AR223420A1/es active
- 1981-03-20 ZA ZA00811899A patent/ZA811899B/xx unknown
- 1981-03-24 ES ES500661A patent/ES500661A0/es active Granted
- 1981-03-25 US US06/247,511 patent/US4395166A/en not_active Expired - Fee Related
- 1981-03-25 PL PL23032281A patent/PL230322A1/xx unknown
- 1981-04-01 JP JP4998681A patent/JPS56149918A/ja active Pending
- 1981-04-03 AU AU69094/81A patent/AU6909481A/en not_active Abandoned
- 1981-04-03 BR BR8102072A patent/BR8102072A/pt unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3150962A (en) * | 1962-04-05 | 1964-09-29 | Babcock & Wilcox Co | Pulverized coal firing method and system for blast furnace |
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 |
Also Published As
Publication number | Publication date |
---|---|
US4395166A (en) | 1983-07-26 |
AU6909481A (en) | 1981-10-08 |
BR8102072A (pt) | 1981-10-06 |
EP0037460A1 (de) | 1981-10-14 |
ZA811899B (en) | 1982-04-28 |
LU82336A1 (fr) | 1980-07-02 |
ES8206631A1 (es) | 1982-09-01 |
ES500661A0 (es) | 1982-09-01 |
DE3161075D1 (en) | 1983-11-10 |
ATE4914T1 (de) | 1983-10-15 |
PL230322A1 (de) | 1981-11-13 |
JPS56149918A (en) | 1981-11-20 |
AR223420A1 (es) | 1981-08-14 |
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