Nitrogen dilution anti-explosion system in dry-method cooling and purifying recovery system for converter gas

A technology of explosion-proof system and recycling system, which is applied in the direction of manufacturing converters and improving process efficiency to avoid explosions

Active Publication Date: 2013-09-04
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Nitrogen dilution anti-explosion system in dry-method cooling and purifying recovery system for converter gas

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[0012] In order to detect and control the components of the flue gas entering the electrostatic precipitator and prevent explosions, this embodiment provides a figure 1 The nitrogen dilution explosion-proof system in the converter gas dry method cooling purification recovery system shown is mainly composed of a nitrogen tank 1, a pneumatic fast valve 2 installed on the nitrogen pipeline 4, and a gas analyzer installed on the smoke inlet pipe of the electrostatic precipitator. Instrument 3 and a controller that controls the opening or closing of the pneumatic quick valve 2 according to the collected signal of the gas analyzer 3. The gas analyzer 3 installed on the flue gas inlet pipe 8 before the flue gas enters the electrostatic precipitator 7 can timely detect the flue gas composition, and when the flue gas is within the explosion limit range, open the nitrogen gas pipeline through the controller (control system) The pneumatic fast valve 2 on 4 instantly sprays nitrogen into ...

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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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Application Information

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IPC IPC(8): C21C5/38
CPCY02P10/20
Inventor 王永刚李俊辉李朝阳郭启超
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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