China MIIT Recognizes DODGEN Melt Crystallization Technology for 72% Energy Cut in Battery Solvent Purification

China's Ministry of Industry and Information Technology has selected a retrofit project using DODGEN continuous melt crystallization for ethylene carbonate purification as a national low-carbon case. The technology replaces conventional distillation, cutting unit energy consumption by 72% from 120.9 to 33.3 kg of standard coal per tonne. The 90,000-tonne-per-year line saves 7,884 tonnes of standard coal and avoids roughly 21,000 tonnes of CO2 emissions annually. The retrofit was completed in five months. Ethylene carbonate is a core solvent in lithium-ion battery electrolytes. The process uses multi-stage temperature control to within 0.5 degrees Celsius, improving purification efficiency by about 40% while avoiding thermal degradation common in distillation. DODGEN says the approach can be applied to other heat-sensitive specialty chemicals. The recognition supports China's push to localize high-purity electrolyte materials and decarbonize its battery supply chain. The project was delivered by Shanghai DODGEN Chemical Technology and Shida Shenghua in Quanzhou.