High pressure in the stabilizer tower during summer
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What to do when the pressure in the stabilizer is high in summer
High ambient temperatures prevent the air coolers from cooling effectively, resulting in an increase in tower pressure; the only solutions are to reduce the load or enhance the cooling capacity of the air coolers.
If it’s not wet air cooling, try air cooling with water sprayed on; similarly, if there is a condenser, water can be sprayed onto it
Use both air cooling and water cooling if they are available. If that doesn’t work, contact the power cycle water team to start the fan in order to lower the temperature of the circulating water. Another measure is to reduce the load on the stabilizer; the bottom temperature of the stabilizer can be lowered appropriately, as long as the vapor pressure and initial boiling point remain within acceptable levels. Slightly reduce the feed temperature to the stabilizer, provided that LPG C2 meets the specifications. Keep the temperatures of the absorber and supplementary absorber ahead at a low level, as well as the temperature of the rich gas. Dry air coolers can have water sprayed on them for cooling, and so can water coolers. However, this will increase water consumption and energy use, so it is not recommended.
1. Try not to introduce C2 into the stabilizer tower； 2. Water is sprayed from the dry air-cooling upper nozzles, using demineralized water ； 3. Intake of unpurified air for soot blowing in each dry air-cooled unit ； 4. Adjust using reflux ； 5. Volume reduction operation ； 6. Discharge the ignition torch when pressure is too high ； 7. Add air cooling or a cooler ； 8. Change from dry air cooling to wet air cooling
Appropriately increase the temperature in the desorption tower, send the non-condensable gas to the compressor, add spraying to the water cooler to reduce the temperature at the bottom of the stabilizer, and control the reflux ratio of the stabilizer as appropriate
Experts, does the stable liquefied gas water cooler have flow deviation? What is the reason? Any good tips?
It might be because the liquefied gas entering the heat exchanger contains non-condensable gases, or perhaps due to hot weather, the heat exchange efficiency of each heat exchanger varies. It is important to carry out proper separation processes to ensure that no C2 is introduced into the stabilization stage. The heat exchangers should have valves for removing non-condensable gases; trying this could help. Parallel connection of liquefied gas water coolers inherently leads to flow imbalances, which makes things more difficult to manage.