When feeding into the ammonia stripping tower, what is the reason for the overtemperature at the top of the synthesis tower and how to avoid it?
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When feeding into the ammonia stripping tower, what is the reason for the overtemperature at the top of the synthesis tower and how to avoid it?
The main reason for overtemperature is: Before feeding into the system, the materials in the system contain steam. After feeding, as the pressure rises, which is equivalent to the rise of steam pressure in the system, there will inevitably be steam condensation and release of heat. This heat will heat the compressed steam, causing the temperature to rise. The main measures to avoid are: After feeding, do not increase the load too quickly, and at the same time strengthen steam replacement. One family’s opinion, for reference only.
When the pressure increase of the high-pressure system is about to pass, open the high-pressure exhaust valve and release some gas into the medium-pressure system. This can not only replace the steam in the high-pressure system, but also increase the pressure in the front section of the medium-pressure system. In this way, the liquid ammonia condenser can be connected before and after feeding to avoid vaporization of the ammonia booster pump caused by a sudden drop in the pressure of the ammonia system during feeding.