Recycling system for nitrocotton waste acid

The invention discloses a recycling system, particularly discloses a recycling system for nitrocotton waste acid, and belongs to the technical field of design and manufacturing of nitrocotton waste acid treatment process equipment. The invention provides a recycling system for nitrocotton waste acid, which can effectively recycle sulfur-containing components in nicotinic acid and prolong the service life of equipment. The recovery treatment system comprises absorption drying tower groups, nicotinic acid absorption tank groups and a connecting and conveying assembly, the absorption drying tower group which is arranged relatively high is connected with the nicotinic acid absorption tank group which is arranged relatively low through the connecting and conveying assembly, and the recovery treatment system further comprises a nicotinic acid suction structure. Nicotinic acid overflowing from the nicotinic acid absorption tank group is input into the secondary absorption tower of the absorption drying tower group f