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采用电液联动快速切断阀作为关键设备,对原竖炉DCS自动控制系统进行扩展,编程实现了空气和煤气低压“3取2”逻辑联锁控制,在异常情况下可以快速切断煤气,除尘风机、助燃风机、冷却风机等设备联锁停机。系统投运后,多次避免了生产和安全事故,为球团竖炉的安全生产提供了保障。
Using the electro-hydraulic quick-disconnect valve as the key equipment, the original vertical furnace DCS automatic control system is extended, and the air and gas low pressure “3 take 2” logical interlocking control are programmed to shut off the gas rapidly under abnormal conditions. Dust fan, combustion fan, cooling fan and other equipment interlock shut down. After the system is put into operation, the production and safety accidents are avoided many times and the safety of the pellet shaft furnace is ensured.