This case study highlights a successful implementation of a nitrogen circulating pneumatic conveying system designed specifically for the transportation of zinc barium white powder, a critical chemical pigment used in various industrial applications. The project was carried out at a chemical plant located in Liuzhou, Guangxi Province, China, where the client required a reliable, safe, and efficient solution for handling fine powder materials under inert gas protection. The entire system was engineered and supplied by Shandong Headpowder Engineering Co., Ltd. (headpowder), a leading provider of advanced powder conveying solutions based in Shandong, China. The primary objective was to eliminate the risk of dust explosion and oxidation during the conveying process, while maintaining high throughput and product quality. By adopting a closed-loop nitrogen circulation design, the system ensures that the zinc barium white powder is transported in a completely inert atmosphere, preserving its chemical stability and color consistency. This project serves as a benchmark for similar applications in the chemical pigment industry, demonstrating the effectiveness of combining pneumatic conveying technology with nitrogen protection engineering.
The core product involved in this project is zinc barium white powder, also known as lithopone, a widely used white pigment in paints, coatings, plastics, rubber, and printing inks. This material is characterized by its fine particle size, high density, and tendency to cause dust pollution and static electricity during handling. Traditional mechanical conveying methods often lead to product degradation, environmental contamination, and safety hazards. The nitrogen circulating pneumatic conveying system developed by headpowder addresses these challenges by utilizing a sealed pipeline network where the powder is suspended in a stream of nitrogen gas. The system is specifically optimized for chemical pigment conveying, ensuring that the product remains free from contamination and moisture absorption. The nitrogen gas not only acts as a carrier but also as a protective blanket, preventing oxidation reactions that could alter the pigment's whiteness and performance. The system's design incorporates a precise pressure control mechanism, a high-efficiency gas-solid separator, and a continuous nitrogen regeneration unit, allowing for minimal gas loss and energy consumption. This solution is particularly suitable for conveying zinc barium white powder over long distances and multiple delivery points within the plant, making it an ideal choice for large-scale chemical production facilities.
The nitrogen protection conveying engineering implemented in this project is a showcase of advanced pneumatic technology tailored for hazardous and sensitive materials. The system operates on a closed-loop principle, where nitrogen gas is recirculated after being stripped of any residual powder particles through a dedicated filtration and regeneration system. This approach significantly reduces the overall nitrogen consumption, making the process both cost-effective and environmentally friendly. Key technical components include a rotary airlock valve for feeding the powder into the pipeline, a venturi-type ejector for creating the necessary vacuum pressure, and a multi-stage cyclone separator for product recovery. The entire system is equipped with explosion-proof electrical components and a programmable logic controller (PLC) for automated operation, monitoring, and fault detection. The nitrogen atmosphere inside the pipeline is continuously monitored to maintain oxygen levels below the safe threshold, ensuring that the zinc barium white powder is protected from any potential combustion or chemical reaction. This engineering approach is also applicable to other fine chemical powders, such as titanium dioxide, carbon black, and various organic pigments, making it a versatile solution for the broader chemical pigment industry. The project in Liuzhou successfully demonstrated a conveying capacity of up to 5 tons per hour with a conveying distance exceeding 200 meters, while maintaining a consistent nitrogen purity of 99.9%.
The adoption of this nitrogen circulating pneumatic conveying system brought multiple tangible benefits to the client in Liuzhou. First and foremost, the safety of the plant operations was greatly enhanced by eliminating the risk of dust explosions and fire hazards associated with conventional conveying methods. The closed-loop design also prevented any powder leakage into the workshop environment, improving air quality and worker health. Secondly, the product quality of the zinc barium white powder was preserved throughout the transport process, as the inert nitrogen atmosphere prevented any discoloration or chemical degradation. This directly contributed to higher customer satisfaction and reduced product rejection rates. Thirdly, the system's energy efficiency, combined with low maintenance requirements, resulted in significant operational cost savings. The nitrogen regeneration unit reduced gas consumption by over 70% compared to open-loop systems, and the automated control minimized the need for manual intervention. The client reported a 40% reduction in overall conveying costs within the first year of operation. Additionally, the system's modular design allowed for easy scalability, enabling the plant to increase production capacity without major infrastructure modifications. These advantages make headpowder's solution a preferred choice for chemical enterprises seeking reliable and safe powder handling technologies.
Shandong Headpowder Engineering Co., Ltd., commonly referred to as headpowder, is a professional engineering company headquartered in Shandong, China, specializing in the design, manufacturing, and installation of pneumatic conveying systems for a wide range of powder materials. With extensive experience in the chemical, pharmaceutical, food, and building materials industries, headpowder has developed a strong reputation for delivering customized solutions that meet the most stringent safety and quality standards. The company's technical team possesses deep expertise in nitrogen protection conveying engineering, dilute phase and dense phase conveying, and vacuum conveying systems. Headpowder's commitment to innovation is reflected in its continuous investment in research and development, resulting in patented technologies for gas-solid separation, dust suppression, and energy recovery. The company's manufacturing facility is equipped with advanced testing equipment, ensuring that every system is thoroughly tested before delivery. For the project in Liuzhou, headpowder provided complete turnkey services, including site survey, system design, equipment fabrication, installation supervision, commissioning, and after-sales support. The successful execution of this project further solidifies headpowder's position as a trusted partner for chemical enterprises across China and beyond.
For inquiries regarding zinc barium white powder conveying, chemical pigment conveying, or nitrogen protection conveying engineering solutions, please contact our professional team. We are dedicated to providing tailored advice and technical support for your specific application needs. Reach out to us directly:
Contact Person: Manager Zhang
WeChat: 15662777102
Shandong Headpowder Engineering Co., Ltd. looks forward to collaborating with you on your next powder handling project. Whether you require a small-scale laboratory system or a large-scale industrial installation, our experienced engineers are ready to assist you in achieving optimal performance and safety. Don't hesitate to get in touch with Manager Zhang via WeChat for a preliminary consultation or to schedule a visit to our facility in Shandong, China.
Shandong Headpowder Engineering Co., Ltd.
156-6277-7102（Zhang manager） 
0531-83386006 
Jinan City, Shandong, China Province 
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