Problems with alkylation raw materials
Thread Content
The sulfur content in the samples of the C4 fraction obtained from the ether feedstock used in the alkylation unit is very low. However, the washing water entering the washing tower of this unit is acidic, methanol cannot be recovered, and the top cooler of the unit used for removing light hydrocarbons is severely corroded; moreover, the sulfur content in the feedstock is high. What could be the reason for this? ? ? ? ? ?
The sulfur content of the raw materials entering the plant is low, but it becomes high after washing to remove light hydrocarbons; this shouldn’t happen
Moreover, the wash water is acidic; the sulfur content is measured using the same person and the same instrument.
If the test results are correct, it only indicates that there is a problem with the water in your factory.
I’m completely baffled by his question; your approach, on the other hand, is worth exploring
Sometimes, for very simple problems, we overcomplicate them.
It’s likely that the laboratory failed to analyze the raw materials accurately; the incoming materials were mixed and not analyzed properly. We faced the same issue here before as well – the water removed by the coalescer contained acidity.
First, determine where the raw materials come from – whether they are purchased externally or produced within the factory. If they are purchased externally, what are the upstream facilities that supply them?
The process is fine; we need to look into the issue with the raw materials (conduct tests). Of course, water is the main culprit
Where does the raw material come from? Is it from an MTP plant?