Continuous Measurement of Chlorine in Process Applications

De-salting is an essential first step in crude oil refining. If not managed properly, the de-salter can create an entire system bottleneck that jeopardises crude oil production and could overload the wastewater treatment system. When present in crude oil, chlorides can lead to rapid corrosion of overhead lines and catalyst fouling downstream. Therefore, it is essential to precisely measure chloride levels at all critical points around the de-salter.

While there has long been talk of automating this process, there must first be a means for continuous chlorine measurement in order to develop and implement the control strategy necessary for automation. No continuous, reliable measurement solution has been available—until now.

The XOS (USA) Clora On-line Analyser precisely measures total chlorine in raw and de-salted crudes, as well as overhead condensate and de-salter effluent water, eliminating the need for frequent, labour intensive lab sampling. The Clora On-line Analyser features and benefits include: No extraction; Low maintenance; No titration; Complete measurement in 5 minutes; 15-second snapshot analysis; Automatic validation; Handles temperatures up to 300°F and; Stream switching available.