Slurry tank level control
Thread Content
I would like to ask my colleagues: what liquid level is generally maintained in the large coal slurry tank of a water-coal slurry gasification unit? From what perspectives should controlling 80% of high liquid levels and 60% of low liquid levels be considered? (If considering whether the low liquid level is due to limitations of the slurry tank agitator or?) Should controlling the high liquid level allow more processing time for slurry preparation? ）
Considering the reliability of the operation and the full utilization of the tank volume.
Generally, it should be controlled at over 60% and below 80%. If it exceeds 80%, the mixing of the coal slurry in the upper layer may become uneven. Around 50% is the level where the blades of the mixer in the coal slurry tank are located; at this level, the coal slurry that is stirred up tends to stick to the walls of the tank. Over time, these deposits can break off into larger pieces, which may then clog the inlet of the coal slurry pump. Keeping the liquid level above 50% is also intended to provide sufficient time for handling in case of a failure in the slurry preparation system.