How are the temperature and pressure at the top of the stripping tower determined?
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How are the temperature and pressure at the top of the stripping tower determined?
1. Pressure is related to the opening degree of the pressure control valve in the stripping tower. 2. Temperature is related to the temperature of the liquid entering the stripping tower, as well as to the saturation level of the gases that need to be desorbed from the solution. It is also connected to the temperature and volume of the stripping medium.
In short, adjust according to the process parameters!
Reply to 3# z880347730: I agree with the view in post 2: Pressure is determined by the opening degree of the pressure control valve in the stripping tower, while temperature is related to the temperature of the liquid entering the stripping tower, as well as the temperature and volume of the stripping medium.
Reply 4# HZG: What the original poster is asking is not what determines the temperature and pressure at the top of the tower, but rather how those temperatures and pressures are determined!
Stripping tower... What type of process is it? Our NHD stripping tower is open-type\(^o^)/~. In my opinion, the temperature and pressure at the top of the tower should be determined based on how much the medium to be stripped is affected by temperature and pressure, as well as the requirements regarding the concentration of the depleted liquid after stripping in your process.
Based on the ability of its medium to be successfully vaporized at a certain pressure (the partial pressure of its medium in the solvent). The top temperature should be determined based on the requirements of subsequent processes.
For the low-temperature methanol washing process: the temperature is generally difficult to control. We do not adjust the nitrogen used for stripping when there are no significant fluctuations in operating conditions. Therefore, it is related to the CO2 content in the methanol-rich stream; of course, temperature also plays a role, but the most important factor is still the CO2 content, as the separation process requires heat absorption. Pressure is related to separation; CO2 can be effectively separated at a certain pressure. It’s complicated to determine this precisely, so it’s necessary to conduct thorough research. Aspen simulation is quite convenient for this purpose
The top pressure of the stripping tower is determined by taking into account both the requirements for the proper progress of the desorption process of specific substances and the volume of material to be processed
The temperature at the top of the stripper must be such that the multi-component mixture on the first tray is in a boiling state. The pressure at the top of the tower is determined to ensure that the pressure difference between the top and bottom of the tower does not exceed a certain value, thereby preventing flooding and ensuring that the processing capacity of the stripper remains optimal