One more question regarding the specific operation of the methanol compressor
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There are 3 reciprocating compressors, numbered 1, 2, and 3. All three are currently operating at full capacity. The temperature in the compression cycle stage is highest for compressor No. 1, followed by compressor No. 2. At this point, the control room instructs that the amount of fresh gas supplied should be reduced. Based on everyone’s operational experience, which compressor would be the best choice for reducing the gas supply?
If there are no major problems with Unit 1 and Unit 2, it might be possible to try reducing the amount of fresh air supplied to Unit 3. The high temperature in the circulation section could be caused by a high compression ratio; reducing the amount of fresh air supplied to the other units will decrease the total amount of air circulating, which in turn will reduce the circulation volume of Unit 1. Since the amount of fresh air supplied to Unit 1 remains unchanged, the reduction in circulation volume will lead to a lower compression ratio and thus a lower temperature in the circulation section
The high temperature in the circulation section of Compression Section 1 is mainly due to internal leakage of the valve, resulting in a low amount of air being introduced and thus no heat being able to be removed; it is advisable to reduce the volume in Unit 1. Also, check if there are any problems with the cooling system.