The measure to prevent liquid slugging when restarting a bottom pump in a heating furnace where the material is at high temperature after a long period of shutdown is
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The measure that can prevent liquid slugging from occurring when a pump at the bottom of a heating furnace, in which the material is in a hot state, is restarted after a long period of shutdown is ( ). A. Quickly open the pump’s outlet valve. B. Slowly open the pump’s outlet valve and adjust the flow rate in the furnace tubes manually, one by one. C. Quickly open the pump’s outlet valve and adjust the flow rate in the furnace tubes to normal levels. D. Slowly open the pump’s outlet valve and use manual control in the control room to adjust the flow rate in the furnace tubes to normal levels. Answer: C
Why is it the third option?
First, to prevent pump stall; second, the material is at a high temperature, the temperature difference is not large, the flow rate is normal, so liquid slugging is unlikely to occur