I. Project Background

To match the company’s capacity expansion strategy and address the capacity bottleneck issue of the original 50-ton/Day DMF recovery plant, this capacity expansion technology transformation project is implemented.

II. Core Objectives

1. Capacity Target: Increase the daily DMF solvent recovery capacity from 50 tons to 75 tons.

2. Efficiency Target: Increase the recovery rate from 99.5% to 99.9%, and maintain the product purity above 99.7%.

3. Energy Efficiency Target: Reduce the unit product comprehensive energy consumption by 30%.

III. Key Technical Upgrade Points

1. Core Equipment Expansion and Optimization: Conduct calculations and replacements for core equipment such as distillation towers, reboilers, and condensers to ensure stable and efficient operation under 75-ton conditions.

2. Process Flow Optimization: Adopt (for example: multi-effect evaporation, heat pump distillation, etc.) technologies to achieve energy cascade utilization, significantly reducing steam consumption.

3. Automation Control System Upgrade: Introduce DCS/SIS systems to achieve precise control throughout the process, enhancing operational safety and stability, and reducing human errors.

IV. Project Outcomes

• Capacity Enhancement: Successfully achieved the designed processing capacity of 75 tons/Day, with a capacity increase of 50%.

• Economic Benefits: It is estimated that the annual additional DMF recovery will be 60000tons, and the annual savings in raw material costs will be approximately 360 million yuan.

• Social Benefits: Strengthened the company’s image as a green factory, in line with national circular economy and clean production policy guidelines.

Conclusion: This project has been successfully completed and reached production capacity, effectively addressing capacity constraints, improving the level of resource comprehensive utilization, and creating significant economic and environmental benefits for the company.