For a multi-stage reciprocating compressor from Nippon Steel, model J4D300M, with propylene as the compressing medium, what load should be set if nitrogen is to be used to purge the compressor without starting it? 0%/25/50%75%100%
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For a multi-stage reciprocating compressor from Nippon Steel, model J4D300M, with propylene as the compressing medium, what load should be set if nitrogen is to be used to purge the compressor without starting it? 0%/25/50%75%100%
Look at the specific gravity. Actually, it’s not a big problem; regardless of the opening degree, the force acting on each valve is the same.
What do you mean by load? The nitrogen flow rate during displacement (with the exhaust outlet fully open) directly affects the speed of displacement; ultimately, samples must be taken to measure the effectiveness of the displacement.
Load refers to the load capacity; as the load increases, the amount of compressed air produced increases, leading to higher output. Is the air valve in the open position after the instrument air valve is opened?
The molecular weight of propylene is greater than that of nitrogen, so it can be used freely
I’m not sure how the air valves function during the load adjustment process of your compressors. Here, we control the opening and closing of the intake valve based on the presence or absence of instrument air; at 0%, the intake valve is forced to be fully open, so it’s sufficient to switch to the 0% setting. Moreover, if the compressor has no start signal, the load regulator also doesn’t function.