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致力于节能减排技术的研发与应用，现有业务聚焦于造纸行业重要设备的设计、制造、销售以及与节能降耗和环境保护相关的技术服务和工程实施 -
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Collaboration Cases
Focusing on the research, development, and application of energy-saving and emission-reduction technologies, with deep expertise in energy efficiency and consumption reduction within the ventilation and drying segments of the paper-making industry.
Fujian Shanying International
Project Overview
- Shanying International is a leading publicly listed company in China’s paper industry, primarily engaged in the production of containerboard, corrugated base paper, specialty papers, and packaging cardboard, with an overall production capacity ranking among the highest nationwide. The company maintains stringent standards for key performance indicators such as high efficiency and energy savings, stable operation, and waste‑heat recovery. For this project, which involves upgrading and retrofitting the drying section of the high‑speed, wide‑web containerboard production line at its Fujian facility, Zhengding Environment has provided a specialized solution featuring enclosed gas‑tight hoods and an advanced heat‑recovery system, helping to enhance product quality, boost operational efficiency, and achieve a greener, more energy‑efficient upgrade.
- This project undertakes a specialized retrofit of the dryer section of a 5,800 mm–wide, 1,500 m/min high-speed containerboard machine, addressing issues such as excessive moisture removal, elevated energy consumption, and inadequate sealing in the original system. Following the upgrade, the equipment operates with enhanced stability, improved drying performance, and significant energy‑saving benefits, fully meeting the enterprise’s production requirements for high speed, high quality, low carbon emissions, and reduced energy use.
Scope of Supply
- It is compatible with a web width of 5,800 mm and high-speed operating conditions up to 1,500 m/min, and has completed the comprehensive upgrade and retrofit of the closed hood system in the dryer section of the containerboard machine, optimizing the hood structure and sealing performance.
- The waste heat recovery system for the drying section has been comprehensively upgraded through integrated retrofitting, with the thermal energy recovery module enhanced to improve the utilization rate of waste heat on the production line.
Core technology
- Addressing the operational characteristics of ultra-wide, high-speed containerboard production lines—long dryer sections, substantial moisture removal, and significant energy consumption—this solution focuses on hood sealing, optimal airflow management, waste heat recovery efficiency, and on-site adaptability, delivering a comprehensive optimization and upgrade to meet the demanding production requirements of high-speed, wide‑format packaging paper.
- The ultra-wide dryer section has been upgraded with a fully enclosed, sealed hood design. Tailored to the characteristics of a 5,800 mm–wide paper machine, this redesign optimizes the hood’s overall structural rigidity and incorporates a multi‑layer sealing system, effectively minimizing hot‑air leakage and condensation. This ensures a stable operating environment in the dryer section, enhancing paper flatness and improving the overall efficiency of the production line.
- Optimized the dedicated flow field and moisture‑removal system for high‑speed operating conditions, tailored to 1500 m/min drying performance; precisely adjusted the hood‑zone ventilation configuration and exhaust‑air volume distribution to balance web‑drying conditions, effectively reducing paper breakage and ensuring long‑term, high‑speed, continuous, and stable production.
- We have implemented an efficient integrated retrofit of the waste heat recovery system, upgraded the core module for exhaust‑air heat recovery, and optimized the thermal energy circulation logic, significantly improving heat‑energy utilization while reducing steam consumption, thereby achieving dual improvements in production stability and energy savings.
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Fujian Shanying International
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Mobile: +86 18807310558 / +86 13907318443
Email:postmaster@hnzdep.com
Address: Room 908–909, New World Chuangdi, No. 139, Laodong East Road, Yuhua District, Changsha City, Hunan Province
Xiangtan Branch: Yuhu High-Tech Industrial Development Zone, Xiangtan City, Hunan Province, China
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