Why does the resistance of the final cooling tower in the benzene washing section increase much more rapidly when it gets hot, especially on sunny days, compared to over cloudy days?
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Why does the resistance of the final cooling tower in the benzene washing section increase much more rapidly when it gets hot, especially on sunny days, compared to over cloudy days? The collection temperatures are all 20–23
I really haven’t observed this in detail. What exactly is meant by an increase in specific resistance? If high temperatures lead to greater resistance, I think it’s because the high temperature causes the volume of the coal gas to increase, resulting in a higher flow rate and thus increased resistance.
Reply to 2# ElephantWithoutForm: It’s strange – we always keep the temperature at 20–23 degrees during assembly, but whenever it’s a sunny day with sunlight, the resistance of the condenser tower increases very rapidly; sometimes it needs to be cleaned every 2 to 3 days. It affects the yield. . Meanwhile, the resistance increases very slowly on overcast days. Summer is coming soon. . .
Reply to 3# gaoyan123: I understand what you mean; it’s naphthalene. Our factory also has this characteristic in summer: it is flushed once every week or so, with a resistance ranging from around 3500 to 1000 pascals.
Our company does not experience such a situation. I suspect that in your company, the temperature measurement points for gas after final cooling and benzene washing are exposed to direct sunlight; the sun’s rays cause the temperature at these measurement points to rise, resulting in a lower actual temperature of the gas, which in turn accelerates the deposition of naphthalene in the final cooling tower.
I guess it’s due to gas expansion: the volume increases, the flow rate speeds up, and the resistance rises, but by a very small amount!
1. Compare it with the system resistance to see whether the tower resistance is a true value. Direct sunlight causes deviations in the measurements taken by the pressure guide pipe. 2. The temperature range you mentioned for that set is too wide. Operations need to be strengthened. 3. The set temperature you mentioned is for behind the tower, right? The temperature before final cooling affects the resistance to final cooling, while the temperature after final cooling affects the resistance to benzene washing. 4. The temperature on the side of the tower facing the direct sunlight is high.