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1. The flow meter is inaccurate; for example, when calibrating the flow meter, certain pressure and temperature coefficients are taken into account, and when parameters such as pressure or temperature change, the flow meter will exhibit a deviation from the actual value. 2. High system resistance: in systems like desulfurization systems, an increase in the flow rate of the circulating fluid due to pump reversal can affect the flow measurement. 3. Leakage in the compressor’s water cooler, allowing gas to leak into the circulating water. 4. Low inlet temperature of the gas blower, which results in a decrease in the volume of air pumped and thus a reduction in the gas flow rate. 5. I’m not aware of where the flow measurement points are located in your plant. Last edited by snowdfr on 2009-2-9 16:03

The oil drain valve not being fully closed causes gas to escape, resulting in waste and a reduced gas volume. This is not the cause of inaccurate flow rates; rather, it is what leads to the low gas volume. I understand the OP means it’s due to a narrow mindset? 1. Is the oil discharge valve fully closed? 2. Are there any leaks in the pipes? 3. Are there any leaks in the equipment? 4. Is the gas flow rate before the compressor accurate? 5. Is the reaction in the synthesis system proceeding normally? Sometimes, when the reaction does not proceed well, the output is low and the gas flow readings are inaccurate; it is also possible that the gas flow rate is too low

Is the poster referring to a low flow rate of semi-water gas? If the measurement point is located at the conversion station, then all processes prior to that measurement point need to be checked; the water column at the outlet of the gas holder. The height of the gas holder, the outlet water seal, the outlet pipeline, and various drainage points all affect the outlet water column. (Clogging or leakage) 2 Temperature of semi-water gas. The inflow and outflow flow rates and water temperatures of each cooling tower. 3 Rotary vane blower operating conditions. 4 Resistance of the desulfurization system. Desulfurization tower level. 5 High-pressure compressor stage 1 and 2 air valves, oil and water discharge valves, and valves for each circuit. Additionally, the original poster can take a look at the post below ； How to increase the production capacity of compressors

The higher the flow rate, the happier the scheduler will be. In addition to checking the oil and water discharge valves, he should also check: 1. The direct-through valve from stage 2 to stage 1； 2. All vent valves ； 3. Is the primary inlet pressure high enough? ； 4. Is the primary inlet temperature low enough? All these factors affect the gas volume; the gas that has been processed at stage one can become part of its output as long as it doesn’t return to stage one. As for the operational conditions in each processing stage, he may not pay too much attention to them – as long as the gas volume is sufficient, that’s what matters. It’s part of one’s responsibilities, which is understandable.