A CDQ cycle gas explosion-proof equipment

Abstract

The invention discloses an anti-explosion equipment for CDQ circulating gas, which relates to the technical field of CDQ engineering and includes a CDQ furnace, a boiler, a dust collector, a circulating fan, a circulating gas connecting pipe, a circulating gas monitoring system, a circulating gas Mixing mechanism; the dry quenching furnace, boiler, dust collector, and circulating fan are connected through a circulating gas communication pipe. The invention has a reasonable structure, realizes real-time monitoring of the combustible gas concentration in the circulating gas in the positive pressure zone and the negative pressure zone, and according to the difference of the monitoring results, the mixed air or nitrogen or air, Nitrogen, and the gas is fully mixed to avoid gas stratification, which is conducive to full combustion, avoiding excessive air injection, which increases the burning loss of coke, and selectively mixes air and nitrogen, and cooperates with circulating gas dispersion. On the one hand, it is more It is economical and convenient, and on the other hand, it can more effectively reduce the concentration of combustible gases and avoid explosions.

Description

technical field [0001] The invention relates to the technical field of dry coke quenching engineering, in particular to explosion-proof equipment for dry coke quenching circulating gas. Background technique [0002] CDQ uses inert gas nitrogen to cool red coke, and at the same time recovers the high-temperature sensible heat of red coke. Compared with wet coke quenching, CDQ has obvious advantages in energy saving, water saving, and improvement of coke quality. It is a key technology researched and popularized in my country's coking industry. In the coke CDQ production process, the negative pressure section of the gas circulation system will inevitably inhale a certain amount of air, and the O in the air 2 When passing through the CDQ red coke layer, it will react with coke to generate CO and CO 2 , secondly, the moisture in the air reacts with red coke to generate H 2 , therefore, there will be CO, H in the circulating gas of CDQ 2 And other combustible components, when ...

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Problems solved by technology

[0003] The existing CDQ production process uses a gas detector to detect the combustible gas concentration of the circulating gas. When the combustible gas concentration reaches the explosion limit value, air is added to the positive pressure zone and negative pressure zone of the circulating gas, relying on the air O 2 H in the high temperature cycle gas 2 , CO and other combustible components are burned to reduce the concentration of combustible component gases. However, if air is directly added to the positive pressure area and negative pressure area, there will be stratification between air and combustible component gases, and the mixing of combustible component gas and air will not be sufficient, resulting in Combustible component gas cannot be fully combusted, and excessive air needs to be injected, which increases the burning loss of coke. Therefore, this application provides a CDQ circulating gas explosion-proof equipment to meet the demand

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