Check the cooling performance of the LNG cryogenic tank!
Thread Content
The cold box is cooled by a five-component + nitrogen circulation system; now the volume of nitrogen circulating has increased while the opening degree of the nitrogen throttle valve remains unchanged – why isn’t the temperature set for the distillation tower being reduced? Could some experts help analyze this? Thank you!
How’s the temperature at the bottom of the tower? 1. The temperature of the material entering the denitration tower is too high. 2. The heating load at the bottom of the tower is high. 3. Nitrogen is diverted at the overhead condenser of the dehydrogenation and denitrification tower; one side has a larger flow while the other has a smaller flow (the nitrogen flow channel in the condenser is blocked). 4. The nitrogen-rich content at the top of the denitrification tower is extremely low; the reflux rate is small, making it impossible to control the temperature at the tower top
Process judgment is a systematic issue; the amount of information provided is too limited to allow for accurate analysis