Seeking advice on the effective heat load problem
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We have a set of tetraalkene isomerization units, which includes a distillation column – the product at the top of this column is MTBE feedstock, while the product at the bottom is light aromatics. The bottom temperature of this column is 110 degrees Celsius; the heat source is steam at 1.0 MPa, with a steam consumption of 4.5 tons per hour. The reflux rate is controlled at 14 tons per hour, the pressure at the top of the column is 0.72 MPa, and the feed rate is 20 tons per hour. Currently, the company is facing a severe shortage of steam. If we reduce the reflux rate by 2 tons per hour, how much steam can be saved? I heard that heat load calculation is required, but I’m not very clear about this.
In fact, the actual test is the same: for example, reduce it by 0.5T first and see how much less steam is produced. It is generally linear.