Can the heating steam for the extraction distillation tower and solvent recovery tower in the aromatic hydrocarbon extraction unit be supplied by 1.0 MPa steam?
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Dear colleagues, the original design for the heating steam in the extraction distillation tower and solvent recovery tower of the aromatic hydrocarbon extraction unit called for 2.2 MPa steam; however, it is now necessary to use 3.5 MPa steam to reduce the temperature and pressure. It’s rather wasteful; could 1.0 MPa superheated steam be used as the heat source?
As long as the heat supply is sufficient, and energy waste is not taken into account, it should work
Is there a problem with the heating temperature not reaching the required level?
The temperature isn’t high enough; 10 kilograms of steam can raise the temperature of the medium to at most 160 degrees. A high-efficiency heat exchanger with a large heat transfer capacity is required. The bottom temperature for benzene extraction needs to be raised above 170 degrees. Additionally, when the temperature of the heat source is too close to that of the medium, it’s difficult to maintain stability through siphoning, making the operation quite challenging； If you think using a temperature and pressure reducer is wasteful, you can install a hydraulic turbine for energy savings.