An Afghan paper mill has recently enhanced its production capacity by introducing a ZOZEN SZL series 25 tph Coal-Fired Steam Boiler. This equipment was selected to serve as a stable and efficient heat source for the paper machine dryer cylinders and pulping processes, ensuring consistent product quality while supporting the mill’s drive toward cost-effective and sustainable operations. By adopting this boiler system, the enterprise not only secured reliable steam for critical processes but also laid the foundation for long-term operational stability in an industry where energy performance directly determines output efficiency.

ZOZEN SZL series 25 tph Coal-Fired Steam Boiler

The decision to adopt the 25 tph Coal-Fired Steam Boiler was rooted in the specific requirements of the papermaking process. In paper production, continuous and steady steam supply is essential, as dryer cylinders are highly sensitive to fluctuations in steam quality and pressure. Any instability in steam conditions can directly impact sheet smoothness, basis weight, and moisture content. The ZOZEN solution addressed these challenges by offering not only stable output but also the flexibility to adapt to different coal types, reducing dependence on a single fuel source. For the Afghan mill, this adaptability was especially valuable, given the uneven distribution and varying quality of coal available in the region.

Technically, the 25 tph Coal-Fired Steam Boiler integrates a series of high-efficiency and reliability-focused features. Its chain grate system employs independent air chambers and zoned air distribution, enabling precise air control for complete combustion and greater stability. This design ensures the boiler can efficiently handle bituminous coal, lean coal, and even anthracite, offering strong adaptability while maintaining combustion efficiency. The furnace is equipped with closely arranged water-cooled walls that expand the radiant heating surface, effectively improving heat transfer. As a result, the system achieves a thermal efficiency of over 81%, a performance level that directly supports lower steam consumption per ton of paper produced and reduces long-term operational costs.

Beyond equipment design, the successful implementation of the 25 tph Coal-Fired Steam Boiler was underpinned by ZOZEN’s project execution capabilities. Engineers were stationed on-site to provide installation guidance, oversee commissioning, and ensure that every stage of the project met strict standards. A full documentation and training package was also delivered, enabling the customer’s technical staff to quickly master operation and maintenance procedures. This combination of hands-on support and structured training significantly shortened the timeline from equipment delivery to stable production, allowing the paper mill to achieve a rapid production ramp-up without compromising reliability.

The operation of the 25 tph Coal-Fired Steam Boiler has since proven to be a decisive factor in the Afghan paper mill’s steady performance. By ensuring stable steam supply for pulping and drying, it has strengthened product consistency while providing flexibility in fuel choice to mitigate supply risks. The high efficiency of the system translates directly into economic benefits, while its comprehensive support structure ensures safe and reliable operation in the long term.

In conclusion, the deployment of the ZOZEN Boiler’s SZL series 25 tph Coal-Fired Steam Boiler demonstrates how advanced, well-executed boiler technology can empower the papermaking industry in challenging environments. It has delivered not just a reliable piece of equipment but a complete thermal energy solution that balances efficiency, adaptability, and service. This project highlights how modern coal-fired boilers continue to play a vital role in ensuring energy security and production stability for industrial enterprises worldwide.