Laboratory applications testing of desalination antiscalants

摘要: Abstract A safe, effective new polymeric desalinatioan antiscalant has been marketed by Pfizer Inc. This maleic acid-containing polymer, FLOCON 247, was developed with the aid of a laboratory single stage recycle flash evaporator. The test unit described herein designed to permit rapid quantitative evaluations threshold scale inhibitors such that relative performance would correlate desalination plant fouling rates. chemical composition and morphology from are similar those full-sized MSF plants, based on atomic absorption spectrometry, scanning electron microscopy, x-ray diffraction. Using Atlantic Ocean seawater (3.2–3.5% TDS) augmented scaling potential (added bicarbonate), is operated at 121°C for 24 hours during typical run. Heat transfer coefficient, concentration factor, blowdown pH, lost total alkalinity, various temperatures, pressures, flow rates monitored periodically. At end run, deposited in brine heater chamber measured magnesium/calcium ratios determined. procedure enables testing four samples per week, permits generation dose/response profiles.