The principle of the temperature gradient in a distillation column
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Could someone explain to me the issue of the temperature gradient in distillation columns, taking into account the parameters I’ll provide below? The temperature gradient in this distillation tower is primarily used to control the amount of n-propyl acetate added! His six temperature readings, from top to bottom, are: 95.9, 97.6, 101.6, 106.4, 97.6, 106.6
The calculation of distillation columns involves mass and heat transfer, as well as the issue of multi-component phase equilibrium. Relying solely on temperature is completely insufficient. Many parameters need to be understood: feed temperature, pressure, composition, reflux ratio, feed rate, reboiler temperature, etc. This cannot be explained in just one or two sentences. Using these parameters, it is possible to calculate how many trays are required minimum, what the reflux ratio should be, how much heat is needed, and what amount of heat exchange is necessary for the distillate. There are specialized calculation software tools for mass and heat transfer in distillation columns, and the parameters of such columns can only be determined through rigorous calculations. It is recommended that the original poster consult a design institute or designer.
97.6 Is that tray at the temperature level the feed point??
97.6 – This temperature value is likely inaccurate and can be ignored; the gradient can only be determined by knowing the sensitive temperature.:)
4# dsygr also doesn’t know where these temperature measurement points are located; the second-to-last measurement point (97.6) is likely the temperature of the feed plate. The upper part is the distillation section, and the lower part is the stripping section. In the distillation section, the temperature of the column increases from top to bottom. The stripping section also increases from top to bottom. Because the temperature changes depending on the content of light and volatile components.