1600 m³/h NMP Solvent Recovery System for Battery Pilot Production Line

I. Equipment Introduction

This series of NMP recovery systems utilizes the complete miscibility of NMP and water to treat and recover the exhaust gas from coating machines. This device has fully automated functions to ensure stable and safe system performance at all times. It adopts the combination design of two-stage spray absorption and two-stage activated carbon absorption to ensure that the exhaust emission meets the regulatory standards.

The system includes ventilation duct, spray box, pump device, blower and control system. It has the advantages of high recovery rate, low operating cost, beautiful appearance, small footprint, excellent performance, and simple operation, making it very suitable for coating processes in various lithium battery laboratory production lines.

II. System Overview

1. System Quantity: One coating line for cathode electrodes. Max exhaust flow per unit: 1600 m³/h. The system is designed for one-to-one treatment; max recovery capacity: 1600 m³/h.

2. Recovery Medium: N-Methyl-2-pyrrolidone (NMP)

3. Applicable Standard: GB 30484-2013 (NMP exhaust concentration: Non-methane hydrocarbons ≤ 50 mg/m³)

4. Treatment Process: Two-stage segmented spray absorption + two-stage activated carbon adsorption

III. Design References

1. Environmental Protection Law of the People's Republic of China

2. Air Pollution Prevention and Control Law of the People's Republic of China

3. Ambient Air Quality Standards (GB 3095-2012)

4. Emission Standards for Pollutants in the Battery Industry (GB 30484-2013)

5. Design Code for Industrial Enterprise Noise Control (GB/T 50087-2013)

IV. Equipment Selection

Item	Value
Equipment Model	TMAX-NMP-1600FL
Solvent Storage Capacity	50 L
Spray Box Volume	0.25 m³
Air Handling Capacity	1600 m³/h
Total Power Consumption	1.47 KW
Pure Water Evaporation Rate	0.05 L/h
Solvent Recovery Rate	≥ 90%
NMP Concentration	≥ 80%
Tail Gas Emission	≤ 50 mg/m³
Main Material	SUS 304 Stainless Steel
Equipment Dimensions (mm)	1200 × 800 × 1250
Net Weight	Approx. 300 kg

V. Equipment Parameters

1. Spray Tower

No.	Component	Specification / Description	Qty	Remarks
1	Tower Body	400×400×800, 2-stage	1	SUS304
2	Corrugated Packing	400×400×200	2 sets	SUS304
3	Water Pump	550W	2 sets	In-tank pumps
4	Demister	400×400×10	1 set	SUS304
5	Concentration Sensor	TMAX-NMPSC	1 set	SZTMAX
6	Spray Nozzle	DN15	2 pcs	Anti-clog
7	Water Supply System	Included with equipment	1 set	SUS201
8	Control Cabinet	Included with equipment	1 set	Q235
9	Circulation Piping	Included with equipment	1 set	SUS304
10	Fan	0.37KW	1 unit	XinFeng
11	Frequency Converter	0.37KW	1 unit	V&T

 

2. Centrifugal Fan

Specification	Details
Model	WDF-1.5A
Rotation Direction	0°
Power / Voltage	0.75KW / 380V
Speed	2800 RPM
Flow Rate	1000–2100 m³/h
Standard	JB/T 10563-2006
Operating Temp.	80°C
Total Pressure	748–790 Pa

3. Corrosion-Resistant In-Tank Pump

Specification	Details
Model	CL-25-550
Speed	2800 RPM
Power / Voltage	550W / 380V
Head	9m
Flow Rate	9 m³/h
Frequency	50 Hz

 

VI. Electrical Control Components

No.	Component	Model/Spec	Qty	Brand
1	Air Switch	4P / 32A	1	Chint
2	Single-Pole Switch	1P / 10A	2	Chint
3	Frequency Converter	0.37KW	1	V&T
4	AC Contactor	1210	2	Chint
5	Thermal Overload Relay	4A	2	Chint
6	Indicator Lights	Red, Green	2	Chint
7	Selector Switch	NP2	2	Chint
8	Fuse	6A	1 set	Chint
9	Time Relay	40n	1	Chint
10	Alarm Light	Ad16-22sm	1	Chint
11	Control Cabinet	500×400×200	1	Chint