The recovery system of residual heat from flue gas can reduce the flue gas temperature of direct-fired machine and increase the primary energy utilization rate of direct-fired machine in summer.
烟气余热回收系统不仅降低了直燃机排烟温度，还提高了夏季直燃机的一次能源利用率。
2
With the improvement of unit load and parameters of the power plant, coal-fired power plant USES medium speed mill direct-firing pulverizing system in common.
随着火电机组容量和参数的不断提高，火电厂普遍采用中速磨直吹式制粉系统。
3
Plasma ignition technology is applied to a dual-in dual-out direct-firedsystem, which satisfied pulverized-coal concentration requirements and practical operating conditions.