Potential problems that may arise during startup, pre-vulcanization phase
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During the pre-vulcanization phase, when the vulcanization temperature was 320°C and the hydrogen sulfide concentration was 1.5%, the recycle hydrogen compressor stopped operating due to a clogged filter (it took 3 hours to resolve the issue). What should be done in such a situation?
Is the new hydrogen compressor starting? When do you start working?
Personal opinion: Stop the injection of vulcanizing agents, cease feeding, and switch to a long-cycle process for tail oil. Reduce the temperature at the outlet of the heating furnace; the reaction heating furnace can be stopped at an appropriate time. Lower the temperature below 200 to prevent further reaction and heat generation. . Turn up the air cooling to maximum.
Our device has not encountered this issue yet! Every drive goes smoothly!
Is the filter clogged? Catalyst powder?
What is the specific reason for it? Catalyst dust? Is it still the high hydrogen sulfide concentration that produces corrosive substances (this should not happen)? Another possibility is that prolonged shutdowns of the pipeline result in the accumulation of large amounts of sediment, which gradually ends up in the compressor inlet filter. Was there no backup unit available after the shutdown? Activate the backup unit, control the temperature rise of the reactor to prevent excessive temperatures, stop sulfur injection, and determine whether you are using wet sulfidation or dry sulfidation
Start it up; we use wet vulcanization, and 320°C is the temperature at which vulcanization is completed.
We use wet sulfidation. What would you do if this kind of accident occurred when your plant starts up? You can ask the experienced craftsmen.
We use wet sulfurization, and there is only one recycle hydrogen compressor.
This post was last edited by 618705 on 2017-1-3 at 13:09. What is the process? Will the inlet filter of the cyclohydrogen compressor get clogged? Was the purging not done properly? Is only one unit allowed, with no spare? Aren’t you worried about safety accidents? For one unit, it is necessary to first stop the sulfur injection, then lower the temperature below the vulcanization temperature, and allow liquid phase circulation to continue until the filter of the circulating hydrogen compressor is properly treated. But to dare to start operating with just one compressor – I really admire your courage!
Reduce the temperature, stop the injection of sulfur, handle it properly before proceeding