Tripping issue of syngas compressor
Thread Content
The model of the syngas compressor used in our facility is 3BCL459, and its outlet pressure during normal operation is 6.0 MPa. What will happen if the vehicle is suddenly jumped out of, and the front and rear interlock valves are not closed? How much damage is done to the compressor?
“What does a “front and rear interlock valve” refer to?
For these 80,000 tons of methanol, we use motor-driven centrifugal circulation air compressors with an outlet pressure of 5 MPa. In normal operation, the power supply is simply cut off; after stopping the machine, it’s sufficient to close the inlet and outlet valves. We have been doing it this way for many years, and nothing bad has happened. I’m not sure about the specific model you mentioned. That compressor of yours is from Shenyang, right? Ask the manufacturer!
I’m not sure what exactly you mean by \"interlocking mechanisms\". As far as I know, there is an interlock valve installed at each of the inlet for the recycled gas and the outlet for the syngas; if you’re referring to these two valves, in the event of a shutdown due to a fault and if they fail to close, I believe that thanks to the check valve at the syngas outlet, the gas will not flow back； There is no check valve on the circulating gas pipeline; the pressure here is 5.4 MPa, and since the pressure in the compression section is low, the gas from the synthesis system can flow back. If a check valve were installed at the inlet of the first stage of the syngas compressor, backflow would not occur.
Check valves are generally installed at the inlet for recycled gas and fresh gas; the compressor should not have any major problems, though the conversion process is a bit more difficult to operate.
All systems are equipped with check valves; if the preceding interlock is not turned off or the vent is not opened, overpressure during conversion can lead to catastrophic safety accidents, so it is essential to have proper emergency response plans in place. Suggestions ； It is best to put into operation the chain of conversion systems designed by the design institute. Otherwise, serious safety accidents will occur.