Primarily used in lithium - ion battery production,Electronics manufacturing,Pharmaceutical industry.
| Parameter |
Freezing Recovery Type (Selected Models) |
Rotary Wheel Recovery Type (Selected Models) |
Composite Process (Common in Li - ion Battery Industry) |
| Treatment Airflow |
1,000 - 10,000 m³/h (Single Unit) |
1,000 - 10,000 m³/h (Single Unit, Customizable for Larger Capacity) |
20,000 - 140,000 m³/h/Unit (e.g., TRD - YR - T Series) |
| Recovery Rate |
≥80% - 90% |
≥90% - 99% |
≥99% |
| Power Distribution |
1.0 - 5.5 kW (Corresponding to Different Airflows) |
6 - 55 kW (Increases with Airflow and Configuration) |
Depending on Specific Process Configuration; e.g., TRD - YR - F - Z Series Requires Circulating Chilled Water + Steam/Thermal Oil |
| Tail Gas Emission Concentration |
≤50 ppm (Some Models ≤20 mg/m³) |
≤30 mg/m³ (Some Models ≤20 mg/m³) |
≤20 - 30 mg/m³ (e.g., TRD - YR - T Series ≤~20 mg/m³) |
I. Recovery Principles and Methods
1. Freezing Recovery Type
Utilizes cooling water and chilled water coils to reduce the temperature of NMP - containing exhaust gas, causing NMP to condense. The condensed NMP is then collected, purified, and recycled. When the NMP concentration in the exhaust gas reaches a certain level (e.g., ≤2,500 ppm), condensation is achieved through freezing (design inlet air temperature is typically 110°C). This method offers a recovery rate exceeding 80%, can be equipped with a chilled water system, and features low operating energy consumption and high cost - effectiveness.
2. Rotary Wheel Recovery Type
Employs a molecular sieve rotary wheel (such as those from Nishibei Giken, Japan). The wheel is divided into a treatment zone, a cooling zone, and a desorption zone. As the NMP - containing gas passes through the treatment zone, organic solvents are adsorbed, reducing the NMP content in the purified gas to below 50 ppm. Another portion of air passes through the cooling zone, is heated, and then flows through the desorption zone, causing the adsorbed NMP to evaporate and be carried away by the air. The ratio of regeneration air to treatment air is 1/5 (concentration factor of 5 times), with a recovery rate exceeding 90%. This method is more environmentally friendly but has relatively higher energy consumption.
3. Composite Process (Taking the Lithium - Ion Battery Industry as an Example)
Combines waste heat recovery + condensation + water washing/rotary wheel technologies. For instance, the waste heat recovery + tower water washing (TRD - YR - T series) uses air cooling, circulating water cooling, and other heat exchange methods, as well as spray absorption and steam stripping concentration, to recover NMP. It is adaptable to different airflows and environmental protection requirements, with a recovery rate of ≥99%.
II. System Components (Taking the Condensation Recovery System as an Example)
- Pre - cooler: Pre - cools the hot exhaust gas.
- After - cooler: Further reduces the temperature of the exhaust gas to prepare for condensation.
- Condenser: Uses cooling water and chilled water coils to condense NMP from the exhaust gas.
- Collection and Purification Unit: Collects and purifies the condensed NMP to meet reuse standards (e.g., electronic grade ≥99.9%).
- Control System: Employs PLC, DDC, etc., to achieve automation and ensure recovery efficiency and product quality.
III. Core Functions and Values
- Cost Control: Recycling NMP can significantly reduce the cost of purchasing new solvents for enterprises. Especially in the lithium - ion battery industry, where NMP consumption is high, the recovery device can quickly pay for itself.
- Environmental Compliance: Reduces VOCs (volatile organic compounds) emissions, complies with environmental protection policies (such as the "dual carbon" goal and exhaust gas emission standards), and avoids pollution penalties.
- Process Synergy: The recycled high - purity NMP can be reinjected into the production process to ensure product quality stability (for example, the lithium - ion battery coating process has high requirements for NMP purity).
IV. Application Scenarios
- Lithium - Ion Battery Production: Recovers NMP from the exhaust gas of coating machines. It is a standard configuration for lithium - ion battery production lines, which is both environmentally friendly and cost - saving. Different processes are suitable for production lines with different airflows and emission requirements. For example, the composite process is suitable for lithium - ion battery coating workshops with large airflows and high - purity requirements.
- Electronics Manufacturing: Used for NMP recovery in processes such as photoresist and cleaning agents, as well as in semiconductor and PCB board production.
- Pharmaceutical Industry: Recovers NMP from drug synthesis and extraction processes to reduce the production cost of active pharmaceutical ingredients.
V. Technical Parameters (Vary by Process and Model; Typical References Below)
| Parameter |
Freezing Recovery Type (Selected Models) |
Rotary Wheel Recovery Type (Selected Models) |
Composite Process (Common in Li - ion Battery Industry) |
| Treatment Airflow |
1,000 - 10,000 m³/h (Single Unit) |
1,000 - 10,000 m³/h (Single Unit, Customizable for Larger Capacity) |
20,000 - 140,000 m³/h/Unit (e.g., TRD - YR - T Series) |
| Recovery Rate |
≥80% - 90% |
≥90% - 99% |
≥99% |
| Power Distribution |
1.0 - 5.5 kW (Corresponding to Different Airflows) |
6 - 55 kW (Increases with Airflow and Configuration) |
Depending on Specific Process Configuration; e.g., TRD - YR - F - Z Series Requires Circulating Chilled Water + Steam/Thermal Oil |
| Tail Gas Emission Concentration |
≤50 ppm (Some Models ≤20 mg/m³) |
≤30 mg/m³ (Some Models ≤20 mg/m³) |
≤20 - 30 mg/m³ (e.g., TRD - YR - T Series ≤~20 mg/m³) |
VI. Equipment Features and Values
Features:
- Safe and reliable (equipped with high - efficiency explosion - proof centrifugal fans, steel frames, etc.)
- Highly automated (PLC, DDC control)
- Good environmental benefits (reduces VOCs emissions)
- Some models can recover waste heat for energy savings
Values:
- Reduces the cost of purchasing new solvents for enterprises. For example, in the lithium - ion battery industry with high NMP consumption, the recovery device can quickly pay for itself.
- Helps enterprises comply with environmental regulations, avoiding pollution penalties.
- The recycled high - purity NMP can be reused in production, ensuring product quality and enhancing the enterprise's market competitiveness.
Address: Huji Industrial Park, Deshang Expressway, Mudan District, Heze City, Shandong Province, China
Business type: Manufacturer/factory, trading company
Business scope: manufacturing and processing machinery
Management system certification: ISO9001:2015 ISO45001:2018 ISO14001:2015
Main products: Ground flare, Biogas flares, flare stack,
Thermal Oxidation Furnace, Flue gas purification equipment
Heze Zexuan Equipment Manufacturing Co., Ltd. is an enterprise engaged in the manufacture of special equipment for environmental protection; sales of special equipment for environmental protection; application of industrial automation technology; sales of power electronic components; research and development of mechanical equipment; sales of intelligent instruments and meters; manufacturing of intelligent instruments and meters; research and development and promotion of comprehensive utilization of waste gas and VOCs treatment technology.
The company's main products and service directions: manufacturing of ground torches, elevated torches, waste gas venting torches, biogas torches, three waste incinerators, and wastewater treatment equipment, industrial automation and DCS system applications, wastewater treatment projects, VOCs treatment equipment and engineering construction, petrochemical accessories and instrument sales, petrochemical equipment installation, maintenance and repair, etc.; support product customization services and OEM services in the same industry, from design to manufacturing, installation, commissioning, and after-sales one-stop service.
Frequently asked questions
I. Product Types and Features
Q: What are the main types of your NMP recovery devices?
A: We mainly have distillation recovery devices, membrane separation recovery devices, and adsorption-desorption recovery devices.
Advantages of Different Types of NMP Recovery Devices
- Distillation Recovery Device: Mature technology, suitable for scenarios where NMP content is high (usually >80%) and the boiling point difference of impurities is significant.
- Membrane Separation Recovery Device: Can be used in combination with distillation to improve recovery efficiency (e.g., concentrate by membrane separation first, then purify by distillation).
- Adsorption-Desorption Recovery Device: The adsorbent can be reused, with low operation cost, but the adsorption capacity is affected by temperature and humidity.
II. Parameter Specifications
Q: What are the main parameters of the NMP recovery device?
A: The main parameters include processing capacity (tons per day), steam temperature range, ignition method, wind resistance capacity, equipment dimensions, etc.
Key Parameter Analysis
- How is the processing capacity determined?
The processing capacity depends on the project's treatment volume. We can accurately calculate and recommend a suitable specification based on the output data provided by you.
- What is the impact of evaporation temperature on usage?
Too low a temperature may lead to incomplete evaporation, while too high a temperature may damage the equipment and cause waste. Therefore, it is necessary to select an appropriate temperature within a safe range.
- What are the options for the ignition method?
- Electronic ignition: Simple operation and high reliability.
- Automatic ignition: More intelligent, enabling remote control and automatic startup.
III. Performance and Quality
Q: How to ensure the performance of the NMP recovery device?
A: Our products have undergone strict quality inspection and performance testing to ensure stable operation under various working conditions. Meanwhile, we provide a complete after-sales service to promptly solve problems encountered by customers during use.
Other Quality-related Questions
- How durable is the equipment?
We use high-quality materials and advanced manufacturing processes to improve the durability of the equipment. Regular maintenance can also extend its service life.
- Does it comply with international standards?
Our NMP recovery devices comply with relevant international standards (such as environmental protection standards and safety standards). Corresponding certification documents will be provided before export to ensure that the products can smoothly enter the target market.
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