N-甲基甲酰胺除水技术研究

Research on N-Methylformamide Water Removal Technology

本文通过精馏法和分子筛除水技术对N-甲基甲酰胺进行除水实验,研究了精馏法和分子筛除水技术对N-甲基甲酰胺除水效果的影响。研究结果表明,分子筛除水技术对N-甲基甲酰胺的除水效果明显优于精馏法。并且在采用3A329型分子筛,质量比为2.3,静置时间60 min时,除水效果可以使得N-甲基甲酰胺的水分含量 ≤ 200 ppm,同时提供了一次性除水和串联除水两种除水方式,可适用于对N-甲基甲酰胺不同的水分含量要求的各个行业。采用分子筛除水技术不仅能够使得N-甲基甲酰胺满足医药、锂电等行业要求,而且绿色无污染、成本低,因此此项除水技术具有广阔的应用前景。

In this paper, the water removal experiment of N-methylformamide was carried out by distillation and molecular sieve water removal technology, and the effect of rectification and molecular sieve water removal technology on the water removal effect of N-methylformamide was studied. The research results show that the water removal effect of molecular sieve water removal technology on N-methylformamide is obviously better than that of rectification method. And, when 3A329 molecular sieve is used, the mass ratio is 2.3, and the standing time is 60 min, the water removal effect can make the moisture content of N-methylformamide ≤ 200 ppm, and at the same time, it provides two kinds of water removal: one-time water removal and series water removal. In this way, it can be applied to various industries with different moisture content requirements for N-methylformamide. In this paper, the use of molecular sieve water removal technology can not only make N-methylformamide meet the requirements of medicine, lithium battery and other industries, but also green, pollution-free and low cost, so this water removal technology has broad application prospects.