DODGEN

Electronic-Grade Ethylene Carbonate (EC) Purification Project Case

Case Introduction

In June 2024, Shenghua New Energy’s “220,000 tons Lithium Battery Materials Production–R&D Integrated Project” located in the Wuhan Chemical Industry Park achieved a successful first-time start-up. The project smoothly produced ultra-high-quality electrolyte solvent products, including ethylene carbonate (EC). The purification unit provided by DODGEN has been operating stably, helping the product purity reach an internationally leading level, with excellent performance across all key technical indicators.

Project Background

Industry Demand and Pain Points:The new energy lithium-battery industry requires extremely high electronic-grade purity for electrolyte solvents (such as ethylene carbonate, EC). Conventional distillation-based separation processes often face drawbacks when producing high-purity chemicals, including high reflux ratios, massive energy consumption, and difficulty in completely removing trace impurities. As a result, production costs are high and product quality can be unstable.

Customer Project Type:Greenfield project (Shenghua New Energy’s lithium battery materials production–R&D integrated project)

Planned Annual Capacity: 220,000 t/a.

Project Highlights

Core Technology and Services:

DODGEN provided this project with proprietary, patented purification technology and a complete purification unit (melt crystallization separation system). The scope of service covered end-to-end delivery—from the handover of a scientifically designed process solution, to schedule-driven manufacturing execution, as well as start-up guidance and commissioning support after delivery—demonstrating strong full-process delivery capabilities.

Key Achievements and Value Delivered:

1
Successful First-Time Start-Up

The unit started up smoothly and achieved stable operation from the first run,
demonstrating the accuracy of DODGEN’s process design and the reliability of its equipment manufacturing.

2
Purity Breakthrough

Product purity can reach 99.999%, with a significantly improved impurity removal rate,
meeting the requirements of high-end battery customers.

3
Energy Saving and Consumption Reduction

Compared with conventional processes (light-ends removal column + refining column system),
steam consumption drops sharply from 1.3 t/t product to approximately 0.3 t/t product,
achieving a 70% reduction in energy consumption.

4
Economic Benefits

Compared with conventional processes (light-ends removal column + refining column system),
the equipment footprint can be reduced by 30%. Through energy savings and product quality premium,
the annual operating cost is expected to be reduced by nearly RMB 10 million for the customer.

5
Production Scale

DODGEN’s process package supports single-line capacities of 1,000–50,000 t/a.

6
Industry Benchmark

DODGEN has captured 56% of the domestic market in electronic-grade EC purification,
demonstrating high technology maturity and strong market recognition.
The technology has been included in the China Petroleum and Chemical Industry Federation directory of Advanced Processes, Technologies, and Equipment for Petrochemical Industry Transformation and Upgrading,
and is widely recognized as a green and low-carbon demonstration technology within the industry.

Chemical Process Solutions

Process Technology

Separation Equipment

Continuous Flow Reactor

Application

Sustainability

Reaction and Separation Professional, Low Carbon Technology Partners

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