The existing acetaldehyde recovery devices include esterification water stripping, acetaldehyde rectification and recycled ethylene glycol purification systems. Based on the acetaldehyde recovery device, the optimization treatment was carried out to improve the acetaldehyde recovery rate, effectively curb the acetaldehyde escape, and realize the double benefits of economy and environmental protection.
the crude acetaldehyde is sent to the distillation unit, and the finished acetaldehyde is obtained by distillation in the light component removal tower and rectification tower. The chemical wastewater discharged from the bottom of the rectification tower is sent to the water purification workshop of our water plant for biochemical treatment.