The main reason for the accident of gas-fired hot stove is that explosive gases appear in the flue and have reached the explosion limit. Then the high temperature in the hot stove meets and causes the furnace to explode. Generally, this kind of situation is mostly caused by operation errors during the ignition of hot blast stove, and it may also be caused by the failure of automatic control. 在热风炉运行的过程中，因为燃烧器的风压波动过大而引起了回火，为了减轻爆炸对于烟道里混合气体的破坏，应该在热风炉上设置防爆门，当发生气体爆炸的时候，防爆门就会因为烟道里压力的提高而打开，这样就会减轻爆炸破坏的程度了，这个时候的热风炉需要作暴露防护，也可以使用水喷雾来进行冷却的作用。
During the operation of hot blast stove, tempering is caused by excessive fluctuation of air pressure in burner. In order to reduce the damage of explosion to mixed gases in flue, explosion-proof doors should be installed on hot blast stove. When gas explosion occurs, explosion-proof doors will be opened because of the increase of pressure in flue, which will reduce explosion. The degree of explosion damage has been made. Hot blast stove at this time needs to be exposed and protected, or water spray can be used for cooling.
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