Instead of extracted by organic solvents, sodium carbonate was used to separate the product and water, thus the following press was simpler and the cost was lower.
菸酸与二乙胺、三氯氧磷作用 ,再经氢氧化钠中和 ,加入纯碱使反应液中的产品与水分层 ,取代有机溶剂萃取工艺 ,简化了操作 ,降低了消
A new method for preparing sodium diacetate by one step reaction based on acetic acid and sodium carbonate (without any solvent) was studied.
介绍了以醋酸和纯碱为原料,不加任何溶剂,采用一步法合成新型防腐剂双乙酸钠的新工艺,确定了最佳工艺条件:n(醋酸):n(纯碱)为(4。
Novel process for manufacturing soda ash and sulfuric acid from sodium sulfate;
芒硝制纯碱和硫酸新工艺探讨
Current situation and prospect of domestic and overseas soda ash industry;
国内外纯碱工业的现状及市场
The status and development trend of technology & market of soda industry in china;
我国纯碱行业的技术、市场现状及展望
45% using industrial sodium carbonate as the catalyst was carried out in a continuous fluidized bed with 123 mm i.
2 m)中,采用工业纯碱(碳酸钠)为催化剂进行了高变质程度无烟煤-福建永安煤(低挥发分Vad=5。