Behind the Breakthrough in Carbon Fiber Precursor Equipment: A Technical Battle over Temperature Uniformity

While most attention remains on the performance competition of finished carbon fiber, a quiet upgrade in upstream precursor equipment is rewriting industry rules. The 5,000-tonne DMSO dry-jet wet-spun PAN-based precursor equipment system appraised in Shaoxing, Zhejiang, achieved a temperature uniformity of ±0.4°C inside the polymerization reactor—a figure that marks a qualitative shift from 'usable' to 'excellent' for domestic equipment.

Event Background

The system was developed over two years by Jinggong Technology in collaboration with Zhejiang Huachuang Carbon Fiber Technology Co., Ltd., Donghua University, and Zhejiang University of Technology. The overall technology was appraised as reaching advanced international level, with DMSO recovery steam consumption and reactor temperature uniformity leading globally. PAN-based precursor is the core of carbon fiber performance, and its preparation equipment and processes have long constrained China's self-supply and industrial security in high-end carbon fiber.

The appraised equipment is not a single device but a complete system covering polymerization, spinning, solvent recovery, and intelligent control. The 60m³ large-capacity polymerization reactor uses a special stirring and scraper synergistic structure, paired with a jacket hot water—coil cold water heat exchange system, solving engineering scale-up problems such as heat transfer lag and local mixing deficiency in high-viscosity systems. This means more reliable batch consistency in mass production.

Industrial Impact

For the carbon fiber industry chain, breakthroughs in precursor equipment directly affect downstream cost rigidity. Data shows the process speed reaches 280m/min, annual precursor capacity is 5,000 tonnes, DMSO recovery rate is no less than 99.5%, and steam consumption is no higher than 2.2t/t. These indicators imply significant reductions in unit energy consumption and solvent loss, potentially impacting cost per tonne of carbon fiber more than expected.

From a supply chain security perspective, high-end precursor equipment was previously dependent on imports, with long lead times and technical service often becoming bottlenecks for capacity expansion. Now that domestic equipment has reached advanced international levels in key indicators, carbon fiber enterprises have more independent choices for expansion, reducing the potential impact of geopolitical risks. For companies planning new capacity, this appraisal sends a clear signal: domestic substitution has shifted from 'optional' to 'preferred.'

Equally noteworthy is the introduction of the MOM intelligent production management system and central control visualization platform. Mass precursor production now achieves visible processes, traceable quality, manageable equipment, and controllable energy consumption—not just a single equipment upgrade but a paradigm shift in production management. For buyers, this means suppliers can provide more stable quality data and transparent production processes, laying a solid foundation for downstream quality traceability.

Practical Recommendations

For Buyers - Focus on specific parameters in the equipment appraisal report, especially temperature uniformity and solvent recovery rate, as hard indicators of supplier technical capability. - Assess whether suppliers possess complete system integration capabilities rather than just single machines, to reduce coordination costs among multiple vendors. - Evaluate the suitability of 5,000-tonne equipment based on your capacity plans to avoid overinvestment or insufficient capacity.

For Carbon Fiber Producers - Incorporate DMSO recovery efficiency as a core criterion in equipment selection to significantly reduce solvent procurement and waste treatment costs in the long run. - Prioritize complete equipment with MOM systems to enhance data-driven production management and reserve interfaces for future intelligent upgrades. - Establish joint R&D mechanisms with equipment suppliers to optimize processes for your specific precursor formulations, maximizing equipment performance.