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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.
Shijiazhuang Tianjinsheng Nonwoven Technology
Project Overview
- Shijiazhuang Tianjinsheng Nonwoven Technology Co., Ltd. specializes in the R&D and production of filter paper, filtration materials, and novel nonwoven materials, and is a leading domestic enterprise with both specialized manufacturing capabilities and significant market influence in the filtration‑paper sector. For this medium‑speed filter‑paper specialty‑paper production line project, the paper machine features a web width of 2,640 mm and a operating speed of 500 m/min, imposing stringent requirements on the temperature‑and‑humidity control accuracy of the enclosed hood and heat‑recovery system, as well as on drying uniformity, condensation‑free operation, and energy‑saving performance. Zhengding Environment has tailored a comprehensive solution for the enclosed hood and heat‑recovery system, ensuring high compatibility with the paper machine and stable, reliable operation, thereby further expanding Zhengding Environment’s portfolio of benchmark projects in the fields of filter paper and specialty filtration materials.
- This project has been successfully commissioned and put into operation. The entire system operates stably, delivers uniform drying, and achieves excellent heat recovery efficiency. All performance indicators fully meet the production process standards for high‑precision, high‑stability filter paper, supporting efficient, energy‑saving, and stable line operation.
Scope of Supply
- Custom-designed, fully integrated enclosed hood system, tailored to accommodate medium-speed filter paper and specialty paper production conditions at a web width of 2,640 mm and a machine speed of 500 m/min.
- Equipped with a dedicated heat recovery system, it precisely matches the evaporation load of filter paper production, effectively boosting waste heat utilization and achieving energy savings and reduced consumption across the production line.
Core technology
- Located in Shijiazhuang, Hebei Province, the project experiences pronounced seasonal temperature variations. To meet the stringent requirements of filter‑media production—namely stable temperature and humidity, condensation‑free operation, and prevention of localized overheating—the design incorporates an optimized air‑shroud insulation and sealing system along with a heat‑recovery operating strategy, ensuring compatibility with the region’s wide seasonal temperature swings and enabling the equipment to operate efficiently and reliably year-round.
- The production process for depth‑matched filter paper is tailored to medium‑speed operating conditions. Based on the paper machine’s web width, line speed, and the specific drying characteristics of the filter paper, the evaporative water load and supply/exhaust air handling capacity are precisely calculated, enabling efficient integration of the enclosed hood, heat recovery system, and main equipment to ensure stable and balanced drying conditions.
- It employs a high-precision dew point and temperature closed-loop control system specifically designed for filter paper, equipped with precise temperature and humidity sensors and an intelligent adjustment system. This ensures strict stability of the dew point inside the hood and the supply air temperature, completely eliminating issues such as condensation, dripping, and localized overheating, thereby guaranteeing both the quality of the finished filter paper and its performance in end-use applications.
- The hood’s airtight insulation structure has been specifically optimized to suit the pronounced seasonal temperature variations in northern regions, significantly enhancing equipment sealing and waste‑heat recovery efficiency, thereby effectively reducing steam consumption and achieving the dual objectives of long‑term reliable operation and green, energy‑efficient resource conservation.
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Shijiazhuang Tianjinsheng Nonwoven Technology
Shijiazhuang Tianjinsheng Nonwoven Technology
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