SU407951A1 - METHOD FOR REGULATING THE HEAT STATE OF A DOMAIN FURNACE - Google Patents

METHOD FOR REGULATING THE HEAT STATE OF A DOMAIN FURNACE

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Publication number
SU407951A1
SU407951A1 SU1828142A SU1828142A SU407951A1 SU 407951 A1 SU407951 A1 SU 407951A1 SU 1828142 A SU1828142 A SU 1828142A SU 1828142 A SU1828142 A SU 1828142A SU 407951 A1 SU407951 A1 SU 407951A1
Authority
SU
USSR - Soviet Union
Prior art keywords
regulating
heat state
domain furnace
flue gas
blast furnace
Prior art date
Application number
SU1828142A
Other languages
Russian (ru)
Original Assignee
Московский институт стали , сплавов
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 Московский институт стали , сплавов filed Critical Московский институт стали , сплавов
Priority to SU1828142A priority Critical patent/SU407951A1/en
Application granted granted Critical
Publication of SU407951A1 publication Critical patent/SU407951A1/en

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Description

1one

Изобретение относитс  к черной металлургии , в частности к способам регулировани  доменных печей.This invention relates to ferrous metallurgy, in particular to methods for regulating blast furnaces.

Известны способы контрол  теплового состо ни  доменной печи, основанные на анализе колошникового газа и состава шихтовых материалов.Methods are known for controlling the thermal state of a blast furnace, based on the analysis of the blast furnace gas and the composition of the charge materials.

На основании анализа шихтовых материалов вычисл етс  потребность в тепле на единицу чугуна, а по анализу колошникового газа-приход тепла на единицу чугуна. По отношению между приходом и расходом тепла определ етс  регулирующее воздействие дл  управлени  тепловым состо нием доменной печи.Based on the analysis of the charge materials, the heat demand per unit of pig iron is calculated, and based on the analysis of the flue gas, the heat input per unit of cast iron. The regulating effect for controlling the thermal state of the blast furnace is determined by the relation between the arrival and the heat consumption.

Однако определение отношени  между двум  близкими по своим абсолютным значени м величинами при недостаточной точности поHowever, the determination of the ratio between two values which are similar in their absolute values with insufficient accuracy in

J г 4275СО, + 1254СО + 2580J g 4275CO, + 1254CO + 2580

М M

где СОг, СО, N2 - среднее процентное содержание соответствующих компонентов в колошниковом газе за данный интервал времени , %;where COG, CO, N2 is the average percentage of the corresponding components in the flue gas for a given time interval,%;

а - отношение объема комбинированного дуть  к объему содержащегос  в нем азота, доли единицы;a is the ratio of the volume of the combined blowing to the volume of nitrogen contained in it, the fraction of a unit;

б - дол  природного газа в комбинированном дутье, доли единицы;b - the share of natural gas in the combined blast, the share of a unit;

SHaO - количество вод ных паров, обкакому-либо каналу информации приводит к ошибкам регулировани  и снижению эффективности автоматического управлени  тепловым состо нием доменной печи.SHaO is the amount of water vapor, and the flow of information leads to regulation errors and a decrease in the efficiency of automatic control of the thermal state of the blast furnace.

Цель изобретени  - повысить качество чугуна . Это достигаетс  путем регулировани  теплового состо ни  доменной печи изменением влажности дуть  при совпадении знака отклонений и превышений ими 1,5% текущих значений двух показателей теплового состо ни , рассчитываемых одновременно и независимо друг от друга по анализу колошникового газа и анализу шихтовых материалов с учетом расхода шихты в единицу времени.The purpose of the invention is to improve the quality of cast iron. This is achieved by adjusting the thermal state of the blast furnace by changing the humidity to blow when the sign of the deviations and their excess exceeds 1.5% of the current values of the two indicators of the thermal state calculated simultaneously and independently from each other by analyzing the blast furnace gas and analyzing the charge materials per unit of time.

Способ осуществл ют следующим образом. Определ ют за определенный интервал времени показатель М по анализу колошникового газа по формуле:The method is carried out as follows. For a certain time interval, the indicator M is determined from the analysis of the flue gas using the formula:

jO-f-aNa (1 - 8)Wj -820аШдjO-f-aNa (1-8) Wj-820aShd

(w

разовавшихс  в процессе восстановлени , 20 нм колошникового газа;developed during the reduction process, 20 nm of flue gas;

- теплосодержание дуть , ккал/нм ; Озщ-количество кислорода шихты, перешедшего в колошниковый газ, нм колошникового газа. .-f-0,5(CO + H,0)-pN,. - heat content blowing, kcal / nm; Obsch-the amount of oxygen mixture, passed into the flue gas, nm flue gas. .-f-0,5 (CO + H, 0) -pN ,.

где ip - объемное отношение кислорода к азоту в дутье, доли единицы.where ip is the volume ratio of oxygen to nitrogen in the blast, fractions of a unit.

SU1828142A 1972-09-08 1972-09-08 METHOD FOR REGULATING THE HEAT STATE OF A DOMAIN FURNACE SU407951A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1828142A SU407951A1 (en) 1972-09-08 1972-09-08 METHOD FOR REGULATING THE HEAT STATE OF A DOMAIN FURNACE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1828142A SU407951A1 (en) 1972-09-08 1972-09-08 METHOD FOR REGULATING THE HEAT STATE OF A DOMAIN FURNACE

Publications (1)

Publication Number Publication Date
SU407951A1 true SU407951A1 (en) 1973-12-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1828142A SU407951A1 (en) 1972-09-08 1972-09-08 METHOD FOR REGULATING THE HEAT STATE OF A DOMAIN FURNACE

Country Status (1)

Country Link
SU (1) SU407951A1 (en)

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