Calculation for the homobenzene dewaxing unit
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Experts, I would like to conduct an energy consumption analysis of the solvent recovery system and the refrigeration system in a cumene dewaxing unit. For example, the energy consumption calculation for three-effect evaporation in the degreasing and dewaxing process. Since I am not very familiar with the homophene dewaxing process, I would appreciate it if an expert could clarify what data is required for energy consumption calculations. Thank you! This post was last edited by poiuy2007 on 2007-6-26 at 10:43.]
You need to provide the process conditions first so that I can do the calculation for you.
You’ve come to the right person. I’ve done the calculations manually as well as using PROII: 1. The amount of material that enters the recycling system, along with the composition of that material, including the solvent content and water content, as well as the composition of the solvents； 2. Temperature: the temperature at the pump outlet after leaving the crystallization system, as well as the temperatures at the inlet and outlet of each heat exchanger; the feed temperature of each evaporation tower, as well as the temperatures at the top and bottom of the towers ； 3. Pressure: Pressure of each heat exchanger, pressure in the tower, pressure at the pump outlet ； 4. Flow rate: material inflow and outflow for each tower, water circulation volume for each cooler ； 5. Analysis of the composition of materials entering and leaving each tower; this is used in calculations to correct any deviations in the flow rates, as the values obtained on-site are at different times, requiring manual adjustment ； 6. Steam or fuel consumption of the heater or furnace. It is easier to calculate the energy consumption of a refrigeration system; this can be determined based on the heat load of each ammonia-cooled coil. Of course, it is also necessary to take into account the cooling efficiency of the ammonia compressors used in different refrigeration systems.
On the 3rd floor, experts say that for benzene-based processes, energy consumption is primarily related to the solvent ratio and the freezing point of the dewaxing oil required; it is also greatly influenced by whether oil removal is carried out and how many stages of oil removal are used. It’s best to conduct calculations throughout the entire process in order to get accurate results.
I’ve learned it; there are so many experts out there:victory:
The person on the 3rd floor is an absolute expert. May I ask which organization you work for? We could exchange ideas!