Water-coal slurry high-pressure pump flow rate setting
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As the title suggests, what is the basis for setting the maximum flow rate of a high-pressure coal slurry pump for coal water slurry? What is the typical correspondence with normal traffic? Thank you!
The flow rate setting of the high-pressure coal slurry pump should be considered in conjunction with the gasification unit, rather than being determined solely based on the pump itself. The normal flow rate of a high-pressure slurry pump should be consistent with the slurry flow rate at full load as designed for the gasification unit. When designing such systems, a capacity of 50~120% is typically taken into account; in other words, the gasifier can operate at 120% of its capacity. Therefore, the slurry pump must be able to handle a slurry flow rate corresponding to 120% of the gasifier’s capacity, with an additional safety factor (1.1~1.2 is sufficient). This way, the maximum flow rate of the slurry pump can be roughly determined. For example, in a furnace with a daily coal input of 1500 tons and a slurry concentration of 60%, the slurry flow rate at full load is around 104 m3/h; this represents the normal flow rate. The maximum flow rate is 140 m3/h, while the minimum flow rate can be set at around 30% of the maximum value, which is 42 m3/h. These are my personal opinions; I hope they can be helpful to you.
It should be related to the following conditions: 1. The load capacity of a single gasification furnace. 2. Properties of coal slurry.
What is the basis for leaving a margin for the amplification factor?
There are no strict regulatory specifications; values are generally determined based on experience.