How to shut down a high-pressure glycol cycle machine?
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How to shut down a high-pressure glycol cycle machine? During the warming-up process of the high-pressure intercooler tower in a certain ammonia synthesis plant, the circulator was started; once gas flow was normal, the circulator was to be shut down. However, its temperature increased slightly during this shutdown process, and the circulator failed to stop operating.
When high-pressure interalcohol operation is normal, the outlet trace level is <5 ppm; it increases rapidly during the shutdown of the circulator. It affects the operation of the ammonia synthesis tower.
This indicates that the one-way conversion rate of CO does not meet the requirements, and a cycle must be added. How long has your bifunctional alcohol catalyst been in use? If it is at the end of its useful life, increasing the inlet temperature of the reactor can help reduce the number of cycles required. Also, is the CO value for imported lydrol high?
The pressure of the high-pressure hydrogenation reactor is 23 MPa, and the catalyst has been in use for three years.
By insisting on stopping the circulation machine, even the trace amount becomes very low.
The diol catalyst that has been in use for seven years still meets the requirements for process operation.