KR960023092A - Estimation of coke size in blast furnace - Google Patents

Estimation of coke size in blast furnace Download PDF

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Publication number
KR960023092A
KR960023092A KR1019940035002A KR19940035002A KR960023092A KR 960023092 A KR960023092 A KR 960023092A KR 1019940035002 A KR1019940035002 A KR 1019940035002A KR 19940035002 A KR19940035002 A KR 19940035002A KR 960023092 A KR960023092 A KR 960023092A
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South Korea
Prior art keywords
coke
blast furnace
particle size
rate
following equation
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KR1019940035002A
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Korean (ko)
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KR970003130B1 (en
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허남환
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김만제
포항종합제철 주식회사
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Priority to KR1019940035002A priority Critical patent/KR970003130B1/en
Publication of KR960023092A publication Critical patent/KR960023092A/en
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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
    • C21B5/007—Conditions of the cokes or characterised by the cokes used
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/24—Test rods or other checking devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/28—Arrangements of monitoring devices, of indicators, of alarm devices

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture Of Iron (AREA)
  • Coke Industry (AREA)

Abstract

본 발명은 고로내에 존재하는 코크스의 입도를 추정하는 방법에 관한 것으로써, 고로조업변화에 따른 고로내의 코크스의 입도변화를 보다 간편하고 정확하게 추정할 수 있는 방법을 제공하고자 하는데, 그 목적이 있다.The present invention relates to a method for estimating the particle size of coke existing in the blast furnace, and to provide a method for more easily and accurately estimating the particle size change of the coke in the blast furnace according to the change in blast furnace operation.

본 발명은 고로조업조건을 설정하는 단계; 상기와 같이 설정된 고로조업조건에 따라 고조조업시의 고로높이방향으로의 가스조성 및 온도(T)분포를 측정하는 단계; 코크스의 강하속도를 측정 코크스가 일정구간에 체류하는 시간(△t)을 구하는 단계; 일정구간에서의 코크스의 화학반응속도(Rate) 를 하기 식(2)에 의해 구하는 단계; 코크스의 화학반응속도The present invention comprises the steps of setting the blast furnace operating conditions; Measuring the gas composition and the temperature (T) distribution in the blast furnace height direction during the high temperature operation according to the blast furnace operating conditions set as described above; Measuring the descent speed of the coke to obtain a time (Δt) at which the coke dwells in a certain section; Obtaining a chemical reaction rate (Rate) of coke at a predetermined time by the following equation (2); Chemical Reaction Rate of Coke

(여기서, pCO2및 pCO는 각각 CO2및 CO의 분압이고, k1, k2, k3는 반응속도상수)(Wherein, p p CO2 and CO are each a CO partial pressure of 2 and CO, k1, k2, k3 are rate constants)

화학반응에 의해 소모된 후의 코크스 입자크기(입경)(D2)를 구하기 위하여 고로내에 존재하는 코크스는 구형이고, 코크스 입자내에서는 그 조성과 밀도가 균일하고, 또한 코크스는 그 표면에서부터 균일하게 소모된다고 가정하여 하기식(3)을 설정하는 단계;The coke present in the blast furnace is spherical in order to obtain the coke particle size (particle size) (D 2 ) after being consumed by the chemical reaction, and its composition and density are uniform in the coke particles, and the coke is consumed uniformly from the surface. Setting the following equation (3) on the assumption that

물리적인 마찰에 의해 소모된 후의 코크스 입자크기(입경)(D3)를 구하기 위하여 상기와 같이 구한 화학반응에 의해 소모된 후의 코크스 입자크기(D2), 코크스 분화지수(CSR) 및 코크스 분화지수를 구하기 위한 시료회전시간(RT)을 이용하여 하기 식(3a)을 설정하는 단계;Coke particle size (D 2 ), coke differentiation index (CSR) and coke differentiation index after consumption by chemical reactions obtained as described above to obtain the coke particle size (particle size) (D 3 ) after consumption by physical friction. Setting the following equation (3a) using a sample rotation time (RT) to obtain;

고로조업시 조업변화에 따른 노내온도분포와 가스조성변화 및 장입물의 강하속도를 이용하여 상기 식(3a)에 의해 고로내 각 위치에서의 코크스 입자크기를 추정하는 단계를 포함하여 구성되는 고로내의 코크스 입도추정방법을 그 요지로 한다.Coke in the blast furnace comprising estimating the coke particle size at each position in the blast furnace by the above formula (3a) using the temperature distribution of the furnace, the change in gas composition and the dropping rate of the charge during the operation of the blast furnace. The method of particle size estimation is the main point.

Description

고로내의 코크스 입도추정방법Estimation of coke size in blast furnace

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (1)

고로조업조건을 설정하는 단계; 상기와 같이 설정된 고로조업조건에 따라 고조조업시의 고로높이 방향으로의 가스조성 및 온도(T)분포를 측정하는 단계; 코크스의 강하속도를 측정 코크스가 일정구간에 체류하는 시간(△t)을 구하는 단계; 일정구간에서의 코크스의 화학반응속도(Rate)를 하기 식(2)에 의해 구하는 단계;Setting blast furnace operating conditions; Measuring the gas composition and the temperature (T) distribution in the blast furnace height direction during the high temperature operation according to the blast furnace operating conditions set as described above; Measuring the descent speed of the coke to obtain a time (Δt) at which the coke dwells in a certain section; Obtaining a chemical reaction rate (Rate) of coke at a predetermined time by the following equation (2); (여기서, pCO2및 pCO는 각각 CO2및 CO의 분압이고, k1, k2, k3는 반응속도상수)(Wherein, p p CO2 and CO are each a CO partial pressure of 2 and CO, k1, k2, k3 are rate constants) 화학반응에 의해 소모된 후의 코크스 입자크기(입경)(D3)를 구하기 위하여 고로내에 존재하는 코크스는 구형이고, 코크스 입자내에서는 그 조성과 밀도가 균일하고, 또한 코크스는 그 표면에서부터 균일하게 소모된다고 가정하여 하기식(3)을 설정하는 단계;The coke present in the blast furnace is spherical in order to obtain the coke particle size (particle size) (D 3 ) after being consumed by the chemical reaction, and its composition and density are uniform in the coke particles, and the coke is consumed uniformly from the surface. Setting the following equation (3) on the assumption that 물리적인 마찰에 의해 소모된 후의 코크스 입자크기(입경)(D3)를 구하기 위하여 상기와 같이 구한 화학반응에 의해 소모된 후의 코크스 입자크기(D2), 코크스 분화지수(CSR) 및 코크스 분화지수를 구하기 위한 시료회전시간(RT)을 이용하여 하기 식(3a)을 설정하는 단계;Coke particle size (D 2 ), coke differentiation index (CSR) and coke differentiation index after consumption by chemical reactions obtained as described above to obtain the coke particle size (particle size) (D 3 ) after consumption by physical friction. Setting the following equation (3a) using a sample rotation time (RT) to obtain; 고로조업시 조업변화에 따른 노내온도분포와 가스조성변화 및 장입물의 강하속도를 이용하여 상기 식(3a)에 의해 고로내 각 위치에서의 코크스 입자크기를 추정하는 단계를 포함하여 구성되는 고로내의 코크스 입도추정 방법.Coke in the blast furnace comprising estimating the coke particle size at each position in the blast furnace by the above formula (3a) using the temperature distribution of the furnace, the change in gas composition and the dropping rate of the charge during the operation of the blast furnace. Granularity estimation method. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940035002A 1994-12-19 1994-12-19 A grain refining method of cokes KR970003130B1 (en)

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Application Number Priority Date Filing Date Title
KR1019940035002A KR970003130B1 (en) 1994-12-19 1994-12-19 A grain refining method of cokes

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Application Number Priority Date Filing Date Title
KR1019940035002A KR970003130B1 (en) 1994-12-19 1994-12-19 A grain refining method of cokes

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KR970003130B1 KR970003130B1 (en) 1997-03-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101707375B1 (en) * 2016-05-18 2017-02-27 현대제철 주식회사 Predicting method of cokes size in cohesive zone of blast furnace

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101299318B1 (en) * 2011-06-29 2013-08-26 현대제철 주식회사 Estimation method of reduction degradation within furnace based on particle size of sinter ore

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101707375B1 (en) * 2016-05-18 2017-02-27 현대제철 주식회사 Predicting method of cokes size in cohesive zone of blast furnace

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