How to control the pressure of the stabilizer tower when it’s hot?
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It’s very hot today, with temperatures exceeding 40 degrees; bubbles have appeared on the glass panels of the liquefied gas reflux tank. I don’t know how to explain it. This isn’t important; the key issue is that very little cold reflux occurs, the bottom temperature drops, the top temperature rises, and the pressure fails to decrease. (Note: All liquefied gas air coolers are in use, and water coolers are also in use; however, the inlet temperature of the water coolers is 36 degrees, while the outlet temperature is 42 degrees.) ) The C2 content in liquefied gas is now analyzed to be 0.2% to 0.3%.
It’s hot, and due to the poor cooling effect of the circulating water, the absorption efficiency decreases. The outlet pressure of the compressor can be appropriately increased, and methods such as cold feeding can be employed.
In the operation of the distillation column over the past few days, I have also observed an increase in the temperature and pressure at the top of the column. Excessive cold reflux affected the equilibrium of the column, as well as the quality of the product; even with the pressure control valve fully open, it was not possible to reduce the pressure.
What is the temperature of liquefied gas after cooling? It’s likely that the load on your liquefied gas condenser is too high~~~
The temperature of your circulating water can be reduced as requested. Also, why is the volume of your reflux fluid so low? It is recommended that you reduce the load on the stabilizer tower, or add fresh water through spraying above the condenser in order to lower the temperature of the heat exchanger
This situation is usually caused by a decrease in the cooling effect at the rear. The solution can involve adding chilled water for spraying, or using cooling water for spraying; it works, but it is not hygienic. If the cooler is heavily fouled with scale, it can be backwashed with water or cleaned using air. It can all provide some relief.
We made pressurized holes in the pipeline of the reflux heat exchanger located in the middle section of the absorption tower, and connected the reflux pipeline to it; this means that the reflux process now has a heat exchanger.
Excuse me, on the first floor: what level of C2 do you usually control in your liquefied gas? Based on your data, 0.3% is not high at the moment. Under the current hot weather conditions, what is the water cooling temperature for liquefied gas? What temperature do you design for the circulating water? Excuse me, 7th floor: What do you mean? I really can’t understand it. Please explain again, thank you!
When it gets hot, the pressure in the stabilizer tower becomes extremely high – this is quite normal; we experience this every year. First, it is necessary to improve the cooling efficiency of the cooling system; your inlet temperature has reached 36 degrees, which is a bit too high ； Secondly, the feed position of the stabilizer tower can be adjusted to the lower or middle part ； Another measure is to adjust the operation of the stabilizer tower; while maintaining the steam pressure required for stabilization, the temperature at the bottom of the tower should be reduced appropriately to ensure an appropriate reflux ratio.
While ensuring that the dry gas C3 meets the required standards, reducing the supplementary absorption dose and decreasing the circulation volume of the entire stabilization system can lower the total heat in the stabilizer tower. Furthermore, keeping the vapor pressure of stable gasoline at a high level can also reduce the cooling load at the tower top
The simplest method we used was to attach a rubber hose, full of holes, to the condenser at the top of the tower, and to spray water there 24 hours a day; this had some effect