赤峰某地褐煤制取腐植酸钾实验研究

发布时间：2018-04-20 07:00

  本文选题：腐植酸钾 + 褐煤　； 参考：《应用化工》2017年09期

【摘要】：以内蒙古赤峰某地褐煤为原料,分别采用氢氧化钾溶液、氢氧化钾与碳酸钾混合溶液两种提取液,进行了制备腐植酸钾的条件实验和正交实验,探究提取剂用量、固液比、热处理时间对腐植酸提取率的影响。结果表明,制备腐植酸钾的优化工艺条件为:在90℃下水浴1 h,固液质量比1∶10,氢氧化钾与碳酸钾混合液浓度1.0%+0.5%。在此优化条件下,腐植酸钾提取率87.2%。水溶性腐植酸含量52.5%,氧化钾含量22.6%,水不溶物含量9.5%,p H值11.0,水分含量约1.5%。
[Abstract]:Using lignite in Chifeng, Inner Mongolia as raw material, two kinds of extraction solutions, potassium hydroxide solution and mixed solution of potassium hydroxide and potassium carbonate, were used to prepare potassium humate. Effect of heat treatment time on the extraction rate of humic acid. The results showed that the optimum conditions for preparing potassium humate were as follows: water bath at 90 鈩，

本文编号：1776729