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RU2017108591A - METHOD FOR OXYGEN PURGE CONTROL FOR Smelting Steel in a Converter - Google Patents

METHOD FOR OXYGEN PURGE CONTROL FOR Smelting Steel in a Converter Download PDF

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Publication number
RU2017108591A
RU2017108591A RU2017108591A RU2017108591A RU2017108591A RU 2017108591 A RU2017108591 A RU 2017108591A RU 2017108591 A RU2017108591 A RU 2017108591A RU 2017108591 A RU2017108591 A RU 2017108591A RU 2017108591 A RU2017108591 A RU 2017108591A
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RU
Russia
Prior art keywords
temperature
oxygen
integral value
converter
increment
Prior art date
Application number
RU2017108591A
Other languages
Russian (ru)
Other versions
RU2017108591A3 (en
RU2671025C2 (en
Inventor
Владимир Михайлович Куркин
Александрс Народицкис
Константин Николаевич Вдовин
Александр Викторович Дымович
Original Assignee
Общество с ограниченной ответственностью "Научно-производственное объединение "Санкт-Петербургская электротехническая компания"
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Application filed by Общество с ограниченной ответственностью "Научно-производственное объединение "Санкт-Петербургская электротехническая компания" filed Critical Общество с ограниченной ответственностью "Научно-производственное объединение "Санкт-Петербургская электротехническая компания"
Priority to RU2017108591A priority Critical patent/RU2671025C2/en
Publication of RU2017108591A3 publication Critical patent/RU2017108591A3/ru
Publication of RU2017108591A publication Critical patent/RU2017108591A/en
Application granted granted Critical
Publication of RU2671025C2 publication Critical patent/RU2671025C2/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Claims (14)

Способ управления кислородной продувкой при выплавке стали в конвертере, включающий контроль расхода кислорода, температуры дымовых газов, содержания СО2 в дымовых газах и сравнение заданного и расчетного значений температуры металла в конвертере, отличающийся тем, что дополнительно контролируют температуру дымовых газов на выходе котла утилизатора, температуру охлаждающей воды на входе и выходе кислородной фурмы, содержание углерода и кремния в чугуне и температуру чугуна, время продувки металла в конвертере с момента подачи кислорода, рассчитывают интегральное значение приращения температуры дымовых газов, интегральное значение приращения температуры дымовых газов на выходе котла утилизатора, интегральное значение приращения температуры охлаждающей воды кислородной фурмы, выполняют расчет температуры металла конвертера регрессионным методом по формулеA method for controlling oxygen purge during steelmaking in a converter, including monitoring oxygen consumption, flue gas temperature, CO 2 content in flue gases and comparing the set and calculated values of the metal temperature in the converter, characterized in that they additionally control the temperature of the flue gases at the outlet of the recovery boiler, temperature of cooling water at the inlet and outlet of the oxygen lance, carbon and silicon content in cast iron and cast iron temperature, metal purge time in the converter from the moment of oxygen supply yes, calculated integral value increment flue gas temperature, the integral value of the increment of the flue gas temperature at the outlet of the recovery boiler, the integral value of the increment of the oxygen lance cooling water temperature, metal temperature converter operate regression calculation by the formula Y=1153,282+35,19051X1+0,019327Х2+158,7865Х3+0,016343Х4+0,002247Х5+0,000109Х6- 0,00113Х7-0,21435Х8+0,006947Х9, гдеY = 1153.282 + 35.19051X 1 + 0.019327X 2 + 158.7865X 3 + 0.016343X 4 + 0.002247X 5 + 0.000109X 6 - 0.00113X 7 -0.21435X 8 + 0.006947X 9 where 1153,282 - свободный член, 1153,282 - free member, 35,19051, 0,019327, 158,7865, 0,016343, 0,002247, 0,000109, -0,00113, , -0,21435, 0,006947 - коэффициенты уравнения, 35.19051, 0.019327, 158.7865, 0.016343, 0.002247, 0.000109, -0.00113,, -0.21435, 0.006947 - coefficients of the equation, X1 - содержание углерода в чугуне, %; X 1 - carbon content in cast iron,%; Х2 - температура чугуна, °С;X 2 - cast iron temperature, ° C; Х3 - содержание кремния в чугуне, %;X 3 - silicon content in cast iron,%; Х4 - интегральное значение расхода кислорода с начала продувки, м3; X 4 - the integral value of the oxygen flow from the beginning of the purge, m 3 ; Х5 - интегральное значение приращения температуры дымовых газов, 0С; X 5 - the integral value of the increment of the temperature of the flue gases, 0 C; Х6 - интегральное значение приращения температуры дымовых газов на выходе котла утилизатора, °С;X 6 is the integral value of the increment of the temperature of the flue gases at the outlet of the waste heat boiler, ° C; Х7 - интегральное значение содержания СО2 в дымовых газах с момента подачи кислорода, %;X 7 - the integral value of the content of CO 2 in flue gases from the moment of oxygen supply,%; X8 - время продувки металла в конвертере с момента подачи кислорода, с;X 8 - metal purge time in the converter from the moment of oxygen supply, s; Х9 - интегральное значение приращения температуры охлаждающей воды кислородной фурмы, °С; X 9 is the integral value of the increment in the temperature of the cooling water of the oxygen tuyere, ° C; при этом окончание кислородной продувки устанавливают при отклонении заданного значения температуры металла от расчетного значения не более ±14°С.the end of the oxygen purge is set when the set value of the metal temperature deviates from the calculated value of not more than ± 14 ° C.
RU2017108591A 2017-03-14 2017-03-14 Method of the oxygen purging control during the converter steel making RU2671025C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2017108591A RU2671025C2 (en) 2017-03-14 2017-03-14 Method of the oxygen purging control during the converter steel making

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2017108591A RU2671025C2 (en) 2017-03-14 2017-03-14 Method of the oxygen purging control during the converter steel making

Publications (3)

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RU2017108591A3 RU2017108591A3 (en) 2018-09-18
RU2017108591A true RU2017108591A (en) 2018-09-18
RU2671025C2 RU2671025C2 (en) 2018-10-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113720169A (en) * 2021-09-07 2021-11-30 上海呈彧智能科技有限公司 Regenerative heating furnace flue gas back flushing method and system based on dual-target feedback

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52129604A (en) * 1976-04-26 1977-10-31 Nippon Kokan Kk <Nkk> Sampling and temperature measuring with sublance
SU1047962A1 (en) * 1982-03-02 1983-10-15 Киевский институт автоматики им.ХХУ съезда КПСС Device for monitoring metal temperature in converter
SU1527279A1 (en) * 1988-03-24 1989-12-07 Центральный научно-исследовательский институт черной металлургии им.И.П.Бардина Method of continuous monitoring of converter process parameters
RU2037529C1 (en) * 1991-06-21 1995-06-19 Днепровский металлический комбинат им.Ф.Э.Дзержинского Method to control metal temperature in converter
RU2037528C1 (en) * 1991-06-21 1995-06-19 Днепровский металлургический комбинат им.Ф.Э.Дзержинского Method to control metal temperature in converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113720169A (en) * 2021-09-07 2021-11-30 上海呈彧智能科技有限公司 Regenerative heating furnace flue gas back flushing method and system based on dual-target feedback
CN113720169B (en) * 2021-09-07 2023-08-25 上海呈彧智能科技有限公司 Double-target feedback-based back-flushing method and system for flue gas of regenerative heating furnace

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Publication number Publication date
RU2017108591A3 (en) 2018-09-18
RU2671025C2 (en) 2018-10-29

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MM4A The patent is invalid due to non-payment of fees

Effective date: 20190315