Related knowledge of NMP recovery unit

This equipment is often used to recover N-methylpyrrolidone (NMP) produced in the manufacture of lithium-ion batteries. In the recovery process, the high-temperature organic waste gas first passes through a heat exchanger to recover local heat to reduce the temperature of the waste gas; then it is pre-cooled by a cooling coil to condense the organic waste gas, and a small amount of condensate is recovered; then it passes through the freezing coil to further reduce the temperature of the organic waste gas. , To recover more condensed organic solvents; in order to ensure environmentally friendly emissions, the organic waste gas is finally concentrated by a concentration runner to make the waste gas discharged into the atmosphere meet the environmental protection requirements. At the same time, the regenerated and concentrated waste gas is transferred to the refrigerating coil for condensation cycle. After the appeal cycle, the concentration of exhaust gas discharged into the atmosphere can be less than 30ppm, and the recovered organic solvent can also be used for a second time, saving costs.

The recovery rate and the purity of the recovered liquid are the highest (the recovery rate is greater than 95%, the purity is greater than 85%), and the concentration discharged into the atmosphere is less than 30PPM,

The control method can be PLC, DDC control, process linkage control; high level of automation; automatic control system and interlocking system are designed for each set of recycling installation, which can ensure safe consumption and smooth operation of the coating machine and recycling installation.