Dry quenching air introduction amount control method

Abstract

The invention discloses a dry quenching air introduction amount control method, which comprises the following steps of: obtaining the following monitoring data, namely the content A of CO in dry quenching circulating gas and the content B of H2 in the dry quenching circulating gas, through a dry quenching gas analyzer, and obtaining the flow Q of the dry quenching circulating gas through a circulating gas flowmeter; according to the method, the content A of CO in circulating gas, the content B of H2 in dry quenching circulating gas and the flow Q of the dry quenching circulating gas serve as the basis, the needed air introduction amount V < air > is calculated, the air introduction amount V < air > is introduced through an air introduction valve, and accurate introduction of the air amount is achieved. According to the scientific operation system for the dry quenching air introduction amount, the content of combustible components in circulating gas serves as the basis, the instant air demand amount is obtained through scientific operation, a signal is transmitted to the air introduction valve, the introduction amount is accurately controlled, on the basis that the components of the circulating gas are controlled to be qualified, coke burning loss is reduced, and the coke quality is improved. And carbon emission is reduced.

Description

Technical field [0001] The present invention relates to the field of coking industry, and more particularly to a dry extinguishing air air introduction control method. Background technique [0002] Dry-free focus is used to inert circulating gas N 2 The main circulating gas extinguishes red in a closed system, the circulating gas is exchanged in the dry extinguishing furnace and the absorption red focus heat temperature increases to 850 to 950 ° C, and heats heat in the boiler to generate steam. , Cooling the circulating gas fluid fan pressurization returns to the dry fire in the process of quenching, circulating. During this process, residual volatilization analysis in coke is combined with combustion reaction, etc., such that CO, H is present in circulating gases 2 Equal flammable components, as the cycle is performed, the content of combustible component is increasing, and the explosion of a certain concentration will explode. If there is a safety problem, the combustible comp...

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Problems solved by technology

[0004] Because the content of combustible components in the circulating gas at the outlet of the circulating fan is used as the basis, the operator manually sets the opening of the air inlet valve to introduce air. Reactions such as water gas and molten carbon occur, and the components will change. The adjustment is still based on the content of combustible components in the circulating gas at the outlet of the circulating fan, so there is a problem of adjustment lag and the accuracy is reduced; When the control range is exceeded, the operator will open the air introduction valve based on experience. The control of the air introduction volume is relatively extensive, and the operation accuracy is low, which may easily cause excessive air introduction, resulting in the burning of coke powder in the first dust removal, and further carbon melting reaction in the CDQ furnace. , resulting in a high coke burning loss rate, a decrease in effective components, and an increase in carbon emissions, which do not meet the national carbon peak and carbon neutral goals

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