INTERFACE DETECTION IN LIQUID PIPELINES

摘要

The basic concept of interface detection is simple: detect and direct the flow of different fluids, or batches, through pipelines. The implementation, however, can be very complicated. The goal of interface detection is to time the switching or cut of the product in such a way that delivers the maximum quantity of product to customers without downgrading the quality of the product. In the case of transmix, the goal is to minimize the quantity of fluid requiring re-refining. In order to avoid the potential contamination of any product by the interface, operators tend to be conservative in cutting batches, but this can result in increased product downgrade or sending some on-spec product to the slop tank. With the large mix and high cost of today's specialty fuels, accurate interface detection is key to maximizing profits.