If production of blast furnaces and BFG user have fluctuated simultaneously, dynamic balance of BFG will be beyond adjustable range, although BFG is balanceable statically for a period of time.

• 在煤气用户生产情况和高炉生产情况同时发生变化的情况下，高炉煤气一天的平衡在可调范围内，而动态瞬时平衡由于波动较大，超出调节范围；