What is the water absorption rate of refined propylene when dehydrated using solid alkali?
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When carrying out solid-alkali dehydration of purified propylene, is NaOH or KOH generally used as the solid alkali? What is the water absorption capacity of each, and what is its equivalent water content? Does anyone who knows know? Thanks
Does refined propylene still require solid alkali to absorb moisture? What grade is the refined propylene you are referring to? Should molecular sieves be used for dehydration to PPM levels?
99.6% propylene, with water content exceeding the limit – 100 ppm; it needs to be dried gradually to meet the national standard of 1 ppm. The process involves using a coalescer first, followed by an alkaline solid, and then a molecular sieve, in order to reduce the water content from 100 ppm to 50 ppm. How should the amount of alkaline solid to be used be calculated?