Optimize low TOC range monitoring

摘要

How can a monitoring system, with a very short response time and a reliable and fast validation/calibration method, enable reuse of pure and hot water by monitoring steam processes and boiler feed water for contaminations by organics, reduce operation cost and energy loss? ODS Sampling & Analytical Systems in the Netherlands is experienced in installing online total organic carbon (TOC) process-monitoring systems and advises operators how to optimize their processes to obtain fast and accurate TOC measurements. In low TOC ranges, measuring and validating/calibrating can be problematic. Today, boilers operate at very high pressure (100 bar-120 bar and higher). According to numerous guidelines, only water contamination at concentrations lower than 0.1 mg/1 C to 0.2 mg/1 C are allowed. Boilers operating at lower pressure (60 bar-80 bar) allow water contamination at a slightly higher level of about 0.5 mg/1 C. The TOC analyzer must be capable of monitoring this potential low-level TOC contamination reliably.