2.ACC的运行.pdf

Yulin process Plant Operation of ACC ACC 的运行 2.0 General 基本要求 2.0.1 When the air in ACC is replaced with steam, ACC backpressure can be controlled by operating fans and rows, and now ACC is able to take load. 当ACC 内的空气被蒸汽完全置换后，就可以通过风机的运行和列的投切来控制ACC 的的压力, ACC 可以带负荷了。 2.0.2 Out of the consideration of freezing protection, when ambient temperature is below +2C, ACC operation is a combination of “row operation”and “fan operation”. While when air ambient temperature is above +2C, ACC operation is only “fan operation”. Whatever, GEA fan step chart must be followed. 出于防冻角度考虑，环境温度低于2 度, ACC 的运行需要同时考虑列的投切和风机的运行。而当环 境温度高于2 度时，仅需要考虑风机的运行。 不论是何种情况，必须遵守GEA 的步序运行。 2.1 Normal operation 正常运行 2.1.1 PID See 见 G-1300258-03-001 G-1300258-03-002 Prepared: fangzhi Date:2007.12.14 Page: 1 of 11 Checked: pengchun Date:2007.12.20 Revision: 0 Approved: zhangjun Date:2007.12.20 Yulin process Plant 2.1.2 Fan Step Configuration Chart 风机步序图。 Fan Speed 风机转速 A minimum speed is foreseen to protect the fan motors when operated. It is possible to run the fan motors with more than 100 pct speed, up to (110 pct). 出于对电机的保护，限定了风机转速的最低值。风机的最高转速可以达到110%。 NOTE! Maximum speed is restricted to 100 pct at ambient temperatures +20 deg C (due to current 注意 consumption of electric motor). 环境温度低于20 度时，风机的最高转速限制在100% （这是因为电机功率的限制） VFC frequency Fan speed. 频率 对应转速 Maximum speed 55Hz 110% 最大转速 Speed 转速 50Hz 100% Minimum speed 10Hz 20% 最小转速 Fans are off 0Hz 0% 风机