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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.
APP Group
Project Overview
- APP (Jinguang Paper Industry) Group is a world‑leading integrated paper and pulp‑paper enterprise, ranking at the forefront globally in scale, technology, and market position, and holding a leading domestic status. Within the group, its three major production bases—Jin Hongye Rudong, Hainan Jinhai Pulp & Paper, and Sichuan Jin Hongye—are implementing new construction, fuel‑to‑steam conversion, and production line upgrade projects, all of which demand world‑class, stringent standards for the operational stability, energy efficiency, and long‑term reliability of Yankee dryer hoods. Zhengding Environmental has supplied multiple sets of Yankee dryer hoods—including upgraded and retrofitted versions—to these three APP bases. This series of projects marks a milestone in Zhengding Environmental’s entry into the supply chains of global papermaking groups, significantly enhancing the company’s brand visibility and industry influence.
- The project encompasses a wide range of scenarios, including the construction of new high-speed tissue paper machines, energy‑saving retrofits converting from fossil fuels to steam, and upgrades to aging production lines. With significant variations across lines in terms of operating speed, web width, process technology, and load conditions, customers impose stringent requirements for drying stability, dew‑point control accuracy, heat‑recovery efficiency, energy savings, condensation‑free operation, and long‑term continuous performance. All projects have achieved successful commissioning and stable operation, delivering substantial energy‑saving benefits and meeting APP Group’s demands for high quality, high stability, and high efficiency in production.
Scope of Supply
- For the Jinhongye Rudong base, a high-speed toilet paper machine with a web width of 3,600 mm and a operating speed of 1,700 m/min is equipped with two Yankee hood systems.
- Provided Hainan Jinhai Pulp & Paper Co., Ltd. with seven complete sets of specialized equipment and associated ancillary systems for steam‑fired‑to‑steam conversion retrofitting.
- For the Sichuan Jinhongye production line upgrade and renovation project, two sets of Yankee hood systems are being installed as supporting equipment.
- We assume full responsibility for the end-to-end delivery of hood‑system design, equipment supply, installation and commissioning, and technical services at each site, ensuring the smooth commissioning and stable operation of all projects.
Core technology
- By accounting for the distinct climatic conditions—temperature, humidity, and elevation—of Jiangsu, Hainan, and Sichuan, as well as the on-site operating environment, we have optimized the Yankee hood sealing, insulation design, and waste heat recovery efficiency. This tailored solution is adaptable to diverse regional climates, enabling stable, efficient, and energy‑saving operation across all three major regions and throughout all seasons.
- System solutions are customized on a per‑unit basis, tailored to specific sites, aircraft types, and processes. For the Jinhongye Rudong site, which operates under high‑speed, high‑evaporation conditions; for Hainan Jinhai, where fuel‑to‑steam conversion and energy‑saving priorities take precedence; and for Sichuan Jinhongye, which requires adaptable retrofitting across diverse operating conditions, we perform targeted calculations of air flow rates, heat recovery, and control logic, ensuring optimal configuration for each production line.
- In response to APP Group’s stringent production standards, a triple closed-loop control system—combining dew point, temperature, and zero‑point monitoring—is employed to ensure that high‑speed machines operate without dripping, upgraded units maintain full output, and fuel‑to‑steam conversion systems achieve maximum energy efficiency, thereby meeting the requirements for continuous, stable line operation.
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APP Group
APP Group
APP Group
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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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