Product Overview: Core Upgrade Equipment for Green Papermaking
As the modern paper industry advances toward intelligence and low-carbon manufacturing, Valmet’s newly developed Advanced Spray Pipe System provides robust technical support for optimizing papermaking processes. Highly integrating precision components such as high-pressure pipes, bushings, drive screws, cleaning units, stuffing boxes, pipe clamps, support beams, and mounting plates, this system is designed to tackle core pain points in traditional papermaking—including high energy consumption, uneven sizing, and unstable dewatering efficiency. It is the ideal choice for paper enterprises aiming to achieve energy conservation, emission reduction, and quality improvement.
Core Functions and Technical Advantages
1. Advanced Steam Spraying Technology for Significant Energy Reduction
The system introduces advanced steam spraying technology to optimize the heat exchange process between steam and the paper sheet. This significantly improves steam absorption rates, thereby effectively increasing the dryness of the sheet exiting the press section. This improvement not only directly enhances paper drying results but also drastically reduces steam energy consumption in the dryer section, laying a solid foundation for paper mills to reduce carbon emissions and achieve carbon-neutral production goals.
2. Surface Sizing Spray System for Precise Chemical Application
In the surface sizing process, the system demonstrates exceptional precision and uniformity. Through the precise coordination of the spray beam and rollers, it applies chemicals evenly onto the paper sheet surface via a spray-type application method. This refined control ensures consistent and stable surface properties of the paper, effectively prevents chemical waste, and ultimately reduces production costs while enhancing product quality.
3. High-Pressure Vacuum Roll Cleaning to Maintain Dewatering Efficiency
Addressing the industry-wide pain point of vacuum roll clogging, the system provides an efficient online cleaning solution. It delivers high-pressure hot water oscillating sprays to both the interior and surface of the vacuum roll, effectively clearing fibers or fillers that clog the holes. This function ensures sustained and stable dewatering efficiency, preventing paper quality degradation or unplanned equipment downtime caused by roll surface blockages, thus guaranteeing continuous and efficient production line operation.
Precision Components and Rigorous Industrial Manufacturing Process
The superior performance of the Valmet Spray Pipe System relies on its rigorous and precise industrial manufacturing process. From initial material cutting to precision machining, welding and assembly, followed by on-site installation and strict testing and shaping, every step adheres to high-standard quality control systems.
Particularly during the tooling and testing phases, the reliability and durability of core components—including high-pressure pipes, drive screws, bushings, and cleaning units—are guaranteed under extreme operating conditions. What is ultimately delivered is not merely a set of equipment components, but a complete, stable, and highly efficient spray pipe system solution.
Frequently Asked Questions (FAQ)
Q1: How does this spray system help paper mills reduce carbon emissions?
A: By utilizing advanced steam spraying technology, the system significantly improves steam absorption rates and sheet dryness, which drastically reduces steam energy consumption in the dryer section, directly lowering carbon emissions during production.
Q2: How does it address reduced dewatering efficiency caused by vacuum roll hole clogging?
A: The system is equipped with a dedicated cleaning unit that delivers high-pressure hot water oscillating sprays to the interior and surface of the vacuum roll, effectively clearing fibers or fillers clogging the holes, thereby maintaining dewatering efficiency and paper quality.
Q3: How does the surface sizing process ensure uniform chemical application?
A: Through the precise coordination of the spray beam and rollers, the system applies chemicals evenly onto the paper sheet surface using a spray-type application method, preventing waste and enhancing the surface properties of the paper.
