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30 December 2013

High-Pressure Bromine-Removal Plant Installed at USA Site

A chlor-alkali plant in Tennessee has become the first US plant to adopt NORAM's bromine-removal technology for production of low-bromine liquid chlorine.

First introduced in Western Canada in 2003, a low-pressure NORAM bromine removal technology allows producers to meet increasingly stringent EPA Maximum Contaminant Level Goals (MCLG's) in chlorine used for disinfection products. It provides a zero incremental energy solution to control residual bromine levels in liquid chlorine to less than the detection level of 5 mg/kg. Bromine impurities in chlorine used for potable water treatment are considered carcinogenic if they are above certain levels. Bromine is also problematic in production of certain plastics, and may stain isocyanate-based foams. Low-bromine chlorine is preferred in the market when it is available.

The new plant, operating at high pressure, and designed to treat 370 stpd of chlorine, was commissioned in the late summer of 2012. NORAM provided the process concept, detailed design, specialised equipment, including the distillation column shown being lifted and set in place, and all heat transfer equipment. NORAM worked with the client by providing support with equipment installation and start-up personnel. The plant has been operating successfully and comfortably meeting all process guarantees for a period of over one year.