The temperature before the throttle valve in the LNG pre-cooling section is too low
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This post was last edited by Liu Adou, a straightforward man made of manganese steel, on 2020-9-3 at 16:55. 1
Your topic is too specialized and too casual. Operating this device requires following rules; it’s like driving – you can move along a certain route, but if you deviate, problems will arise, that is, accidents. To achieve restorative adjustment, it is necessary to identify the cause of the deviation and return to the right path. Operations like this are called “adjusting the cheeks”; once too much is added, it’s necessary to restore the original state, and once things get out of control, it’s hard to know how to deal with them. In severe cases, the only option is to restart.
First, it is necessary to determine whether direct refrigeration or regenerative cooling will be used for pre-cooling
Is anyone still here? I recently tried to start a 8000 KW motor driven by a power-frequency compressor. I was able to start it successfully once before; the inlet pressure was 1.5 kilograms, and the gas mixture consisted mainly of methane and ethylene. The anti-surge valve was set to its full open position while the outlet valve was fully closed. However, the starting current reached 1000 A, causing the system to shut down twice. Even after shutting down all of the plant’s high-power equipment before attempting to start the compressor, it still didn’t work. Is there any way to get this compressor running?
The high current is likely due to excessive load; it is recommended to reduce the inlet pressure. Also, check whether the opening degree of the inlet guide vane is too large when starting up
The temperature is too low; it’s probably due to excessive circulation of the liquid refrigerant
Learned upon entering*{:9001:}