ES446425A1 - Apparatus for controlling the gas pressure under the shaft top in a blast furnace - Google Patents

Apparatus for controlling the gas pressure under the shaft top in a blast furnace

Info

Publication number
ES446425A1
ES446425A1 ES446425A ES446425A ES446425A1 ES 446425 A1 ES446425 A1 ES 446425A1 ES 446425 A ES446425 A ES 446425A ES 446425 A ES446425 A ES 446425A ES 446425 A1 ES446425 A1 ES 446425A1
Authority
ES
Spain
Prior art keywords
control
gas
diaphragm
gas turbine
blast furnace
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
Application number
ES446425A
Other languages
Spanish (es)
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.)
LENINGRASKY UCHASTOK TS PRO TE
Original Assignee
LENINGRASKY UCHASTOK TS PRO TE
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 LENINGRASKY UCHASTOK TS PRO TE filed Critical LENINGRASKY UCHASTOK TS PRO TE
Publication of ES446425A1 publication Critical patent/ES446425A1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
    • G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
    • G05D16/204—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means the plurality of throttling means being arranged in parallel
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/007—Controlling or regulating of the top pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C1/00—Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid
    • F02C1/04—Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid the working fluid being heated indirectly
    • F02C1/05—Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid the working fluid being heated indirectly characterised by the type or source of heat, e.g. using nuclear or solar energy
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/64—Controlling the physical properties of the gas, e.g. pressure or temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Control Of Fluid Pressure (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

Installation to control the gas pressure under the gutter in a high capacity blast furnace, including a choke valve assembly in which at least two control choke valves, arranged in parallel, have separate actuations or actuators with switches or switches operating at specified positions of the throttle valves, said throttle valve assembly being incorporated in the blast furnace outlet line, one gas turbine connected to the gas outlet line, in parallel with said set of throttle valves. throttle and having a heater for the blast furnace gas fed to the turbine, a control diaphragm and a stop diaphragm arranged with separate drives to rotate them, the control diaphragm having a switch that operates after the total opening of said diaphragm, an isodromic regulator for the gas pressure under the top of the blast furnace tub, electrically connected, to separate drives of said throttle valves and to the drive of said control diaphragm by means of a logical control unit that controls the sequence of operation of said drives, characterized by the use of at minus one more gas turbine (4a and 4b) connected to the gas outlet pipe (2) of the large capacity blast furnace (1), in parallel with said gas turbine (4) and which has, like the first gas turbine (4), a gas heater (13a and 13b), a control diaphragm (14a and 14b) with an independent drive (16a and 16b) connected to the output of the isodromic regulator (21) for the pressure of gas under the upper part of the tank, and a switch (17a and 17b) that acts when the control diaphragm is fully opened, and which also has a stop diaphragm (15a and 15b), each gas turbine (4, 4a) and 4b) provided with a mounted switch (18, 18a and 18b) in the control diaphragm (14, 14a and 14b of the respective gas turbine and operated by rotating the control diaphragm (14, 14a and 14b) to close to the position corresponding to a gas flow through this turbine (4, 4a and 4b) whose flow rate is slightly higher than that at which the gas heater (13, 13a and 13b) is disconnected, the switch (10) of the first gas turbine (4) having a normally closed contact incorporated in an electrical control circuit (32) of the isodromic regulator (21) in the line that is used to close the control diaphragm (14) of the first gas turbine (4) and a normally open contact incorporated in a similar way in an electrical control circuit (32), in its line that is used to close the control diaphragm (14a) of the second gas turbine (4a), the switch (18a) also having a normally closed contact incorporated in the electrical circuit control (32), in its line that goes from the regulator isodromic (21) to the independent drive (16a), to close the control diaphragm (14a) of the second gas turbine (4a), and a normally open contact incorporated in the electrical control circuit (32), in its line that it serves to control the control diaphragm (14b) of the third gas turbine (4b), which allows the successive action of the isodromic regulator (21) to be carried out on the independent drives (16, 16a and 16b) for the control diaphragms (14, 14a and 14b) of all the mentioned gas turbines (4, 4a and 4b). (Machine-translation by Google Translate, not legally binding)
ES446425A 1975-03-27 1976-03-26 Apparatus for controlling the gas pressure under the shaft top in a blast furnace Expired ES446425A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2113551 1975-03-27

Publications (1)

Publication Number Publication Date
ES446425A1 true ES446425A1 (en) 1977-07-01

Family

ID=20612743

Family Applications (1)

Application Number Title Priority Date Filing Date
ES446425A Expired ES446425A1 (en) 1975-03-27 1976-03-26 Apparatus for controlling the gas pressure under the shaft top in a blast furnace

Country Status (5)

Country Link
CA (1) CA1072656A (en)
ES (1) ES446425A1 (en)
FR (1) FR2305498A1 (en)
GB (1) GB1537709A (en)
SE (1) SE416406B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5377942A (en) * 1976-12-20 1978-07-10 Nippon Steel Corp Energy collect on system for turbine utilizing high pressured last at top furnace
US4192489A (en) * 1977-07-22 1980-03-11 Babich Vladimir A Control system for an installation utilizing pressure energy of outgoing blast-furnace gas
FR2488941A1 (en) * 1980-08-20 1982-02-26 Nippon Steel Corp Generating power from top pressure of blast furnaces - by directing top gas to turbines connected in tandem to electric generator
DE3130913C2 (en) * 1981-08-05 1984-03-29 Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen Method for operating a blast furnace system
CA1191233A (en) * 1982-12-10 1985-07-30 Donald P. Petro Flow regulating system

Also Published As

Publication number Publication date
CA1072656A (en) 1980-02-26
SE7603639L (en) 1976-09-28
GB1537709A (en) 1979-01-04
SE416406B (en) 1980-12-22
FR2305498A1 (en) 1976-10-22
FR2305498B1 (en) 1978-11-17

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971103