A nitrogen dilution explosion-proof system in a converter gas dry cooling purification recovery system

Abstract

The invention provides a nitrogen dilution anti-explosion system in a dry-method cooling and purifying recovery system for a converter gas. The nitrogen dilution anti-explosion system mainly comprises a nitrogen tank, a rapid pneumatic valve arranged on a nitrogen pipe, a gas analyzer mounted on a smoke inlet pipeline of an electrostatic precipitator, as well as a controller, wherein the controller is used for controlling the rapid pneumatic valve to open or close according to a signal collected by the gas analyzer. The nitrogen dilution anti-explosion system can be mounted on the pipeline before smoke entering the electrostatic precipitator, smoke components can be detected timely, when smoke is in an explosion limit range, nitrogen is instantly sprayed into a flue for dilution, and accordingly, the explosion in the electrostatic precipitator is reduced or prevented.

Description

technical field

[0001] The invention belongs to a gas dilution explosion-proof system device, which is suitable for converter gas dry method cooling and purification recovery system, and can also be applied to the dilution of toxic or explosive gas in other industries, and specifically relates to a converter gas dry method cooling and purification Nitrogen dilution explosion protection system in recovery system. Background technique

[0002] The technology of purification, recovery and utilization of converter gas first started in Japan, which has a lot to do with the lack of energy in Japan. Japan has installed wet method (OG method) converter gas purification and recovery equipment in Yawata Steel Works since 1962, and the real construction of converter gas recovery equipment around the world began in the mid-1970s when the energy crisis began. The wet method (OG method) was originally developed because converter gas is a flammable and explosive gas. This method does not ...

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