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Shangrao SVOLT NMP Recovery System

NMP Tower Series

Shangrao SVOLT NMP Recovery System

Shangrao SVOLT NMP Recovery System

Spray Tower

The spray tower is designed to reduce and purify the NMP content in the exhaust air generated during the coating machine production process, in order to meet the environmental requirements and safely discharge the exhaust gas into the atmosphere.

The principle involves thorough contact between the gaseous NMP present in the exhaust air and water through spraying. This allows the originally mixed NMP in the exhaust air to dissolve in the water, achieving a reduction in NMP content and the purification of the exhaust air.

The advantages of Pengjin's spray tower include low energy consumption and better purification effectiveness compared to similar products in the industry.

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    Project: Shangrao SVOLT NMP Recovery System (PJ22070102)
    Customer required parameter Equipment parameter
    Air volume Cathode-180000m³/h
    Anode-130000m³/h    		 Equipment model Treatment capacity Equipment size Tower internals
    material    		 Tower shell
    material    		 Emission concentration
    of exhaust gas
    Production line (number of
    cathode and anode lines)    		 4 two-layer cathode and
    4 two-layer anode coating machines    		 Diameter Height
    NMP liquid concentration ≥85% PJNMP18W
    PJNMP13W    		 Cathode-180000m³/h
    Anode-130000m³/h    		 2200 11800 Aluminium plate Stainless steel 20mg/m³
    Heat-exchange efficiency ≥70%
    Emission standard of NMP gas ≤25mg/m³
    Space occupation 720㎡
    Cathode process route: excess heat recovery + condenser + water absorption tower
    Anode process route: coating machine to air exhaust fan + excess heat exchange to direct emission and
    fresh air filtration + air return fan + excess heat exchange to coating machine
    Cathode engineering characteristics: This project was a one-for-two fully automatic large air volume NMP recovery system. Highly efficient excess heat recovery and effective heat exchange of exhaust and return air were achieved. NMP waste liquid was sufficiently recovered using low-temperature condensation method. The exhaust gas was treated by water absorption method to meet emission standard. G4+F8 filter was used to guarantee cleanliness of equipment and return air.
    Anode engineering characteristics: Anode coating machines adopted one-for-four air duct treatment system in this project, each layer of two-layer coating machine was equipped with two excess heat recovery
    equipment, filter box for exhaust gas treatment. Heat of exhaust and return air was exchanged efficiently for excess heat recovery. G4+F8 filter box was effective for fresh air impurity filtration to
    guarantee cleanliness of return air.