Solvent Recovery Technology (Recovery and Purification)
Organic solvents (such as NMP, DMF, and DMAc solvents) used in the plants are recycled through a fully automatic facility! Environment-friendly and energy-saving technology
The gases generated from organic solvents (such as NMP, DMF, and DMAc solvents) used in the plants are collected, purified and recycled at the production site.
Eco-friendliness and cost reductions can be achieved simultaneously.
Advantages and Features
1High Quality and High Recovery Rate
We achieve purified NMP concentrations of 99.9 wt% or more. For recovered DMF and DMAc, the concentration is 99.8 wt% or more and the recovery rate is 95%. By utilizing our expertise and operating technologies, we achieve high quality and a high recovery rate.
2Energy Saving Facility
Purifying the NMP solvent, which has been purified by the contractor, at the production site, reduces the external purification cost, transport cost of the solvent, and CO2 emissions. Since the mixture with solvents used at other plant can be avoided, a minimum amount of energy can be used to purify the solvent.
By using PLC, the facility is operated automatically from startup to shut down. The facility can be operated by persons unfamiliar with the solvent recovery/purification facility.
We have delivered facilities all over the world, including 35 units for the NMP purification facilities and 48 units for the DMF/DMAc purification facility.
NMP Recovery Unit & NMP Purification Unit
The NMP recovery unit absorbs and recovers the NMP gas generated in the manufacturing process of lithium-ion secondary batteries and prevents air pollution. The recovered NMP solvent is sent to the NMP purification unit and purified to a high concentration of 99.9 wt% or more. The unit operates automatically and is controlled to shut down safely in the event of an emergency. Compared to when the solvent is not recycled, on-site recycling can reduce running costs to about one-tenth. In comparison with recycling by a contractor, on-site recycling reduces running costs to about one-fifth.
- *1Recycle Drying Gas : In case of Dry Recovery Process
DMF/DMAc Recovery System
The DMF/DMAc recovery system recovers wastewater containing the DMF and DMAc generated in the manufacturing processes of polyurethane synthetic leather, acrylic fiber, printed circuit boards, and hollow fiber membranes for artificial dialysis to a high purity of 99.8 wt% or more. Our purification system is optimized for each customer using energy-saving technologies like multiple-effect distillation, vapor compression, and self-heating regeneration. Furthermore, our patented technologies reduce and eliminate the solid matter generated in the reaction process. Thus, we can propose suitable concentration systems.We establish a purification system that is optimal for each customer using various energy saving technologies, such as multiple-effect distillation, vapor compression, and self-heating regeneration. Furthermore, we have patented technologies to reduce and eliminate solid contents that are generated in the reaction process. Thus, we can propose suitable concentration systems.