Heavy diols are by-products in the process of coal-to-ethylene glycol production, which are difficult to recycle and have low economic benefit. The engine coolant was prepared through the synergistic action of several additives using heavy dihydric alcohol as antifreeze, with the mass percentage of 50%~55% heavy dihydric alcohol, benzotriazole 0.1%~0.2%, 2,4, 6-tri (aminocaproic acid) -1,3, 5-triazine 0.5%~1.0%, sodium dihydrogen phosphate 0.5%~2.0%, and the content of the coolant was as follows: Diethanolamine 0.2%~ 0.5%, the allowance was deionized water as the formula. Formula engine coolant general requirements, physical and chemical properties, performance meet the national standard requirements, improve the added value of the process.
任晓明，朱序阳，李小洁，袁立勇，崔飞飞，付莉琼，赵俊美，刘飞飞. 煤制乙二醇副产品重质二元醇制备发动机冷却液的研究[J]. 煤炭与化工, 2025, 48(5): 137-142，155..
Ren Xiaoming, Zhu Xuyang, Li Xiaojie, Yuan Liyong, Cui Feifei, Fu Liqiong, Zhao Junmei, Liu Feifei. Preparation of engine coolant from coal to ethylene glycol by heavy diols. CCI, 2025, 48(5): 137-142，155..
