Hangzhou Dry Air Treatment Equipment Co., Ltd products

he working principle and process characteristics of batteries, such as the production of lithium-ion batteries, thermal batteries and lithium materials, must be completed in a very dry environment. Ultra-low humidity dehumidification equipment in this production process, it is also an indispensable part, and its dehumidification and drying performance directly affects the electrical performance and safety of the battery. ZCH series low dew point desiccant dehumidifier after years of application and verification in battery-related production processes, can fully meet the environmental needs of battery-related production processes.

Product Features:Patented energy-saving technology. Electric and steam heated regenerative heaters are available.  Aluminum alloy frame with anti-cold bridge, small size light weight and good sealing. Modular assembly, easy for quick installation.

Features: Using waste heat from refrigeration process as low-temperature reactivation heat source. By improving the structure of the rotor, a new type of dehumidification rotor is used to reduce the reactivation temperature, and stable reactivation can be guaranteed at 50~60?.

Features: Equipped with ECS control system (Siemens PLC control is optional). Reactivation heating (electric/steam). Standard power supply is 380V/3phase/50HZ. The unit does not include processing fan, surface cooler, and post-heating, please specify when ordering. The processing air volume range 300m³/h-30000m³/h. Using high-strength, low-leakage and anti-cold bridge aluminum alloy frame or steel frame. Standard components: rotor, reactivation fan, reactivation heater. Temperature controlled by AHU by customer.

The equipment is suitable for recovery of NMP organic solvent recovery in lithium battery manufacturing which can help users to achieve standard discharge and resource recovery. The device has simple structure, and obtain green and safe discharge without any changes to the existing production which eliminates environmental worries, reduces waste and saves energy.

Applications: This equipment condenses and recovers NMP solvent by freezing the exhausted air out of coating process of lithium batteries. By using cooling recovery devices (heat exchanger, cooling water cooler, chilled water cooler), part of NMP will condense from the air, and the concentration of NMP in exhausted air reduced below 300ppm after condensation. ZJRH rotary NMP recovery system able to do the further NMP recovery processing and meet the environmental emission standards.

Water as the absorbent medium in NMP recovery process, which contains two-stage absorption process, as follows:The hot exhaust air with high concentration of NMP from the coater is recovered by the air-to-air heat exchanger, and then sent to the NMP comprehensive absorption tower by process fan. The absorption tower is composed of the lower and upper two-stage absorption towers, which are at towers on the bottom and top. The NMP-containing air is sent to the bottom of the lower absorption tower through, and the absorption liquid (80-85% NMP aqueous solution) is sprayed on the top of the lower tower. 

High concentrations of organic waste gas from the zeolite material with organics can be desorbed by adding a small amount of heating air. The process air volume in the rear section will become smaller by concentrating according to the air volume ratio.  The slowly rotating rotor automatically rotates the adsorbent material containing organics from the adsorption section to the desorption section, and the adsorbent material after desorption and recreation will re-adsorbs the organic waste gas.

After pretreatment of filtering and cooling, the organic waste gas with middle and high concentration enters the first-stage rotor and the second-stage rotor for adsorption and concentration. By now we will get clean gas which can be discharged by standard through the chimney. The high-concentration desorbed gas generated by the rotor enters the drying tank to completely remove the moisture after heating recovery. We will obtain a water-free solvent after the dried exhaust gas condensed at a deep low-temperature(-60 to -10 °C can be selected according to the VOCs composition). The condensed exhaust gas still contains a certain concentration of VOCs components, and finally it will return to the inlet manifold process of device.