This article presents a detailed case study of a carbon black hybrid pneumatic conveying project implemented for a chemical enterprise in Chongqing. The project focuses on the efficient and reliable transportation of carbon black and rubber raw materials using advanced hybrid pneumatic conveying systems. The solution was designed and executed by Shandong Headpowder Engineering Co., Ltd., a leading engineering company based in Shandong, China. The company, known by its brand name headpowder, specializes in providing customized pneumatic conveying solutions for the chemical and rubber industries. The project successfully addressed the challenges of handling fine, abrasive, and cohesive carbon black powder, as well as rubber raw materials, ensuring high throughput, minimal product degradation, and low energy consumption. The system integrates multiple conveying modes, including dense phase and dilute phase, to optimize material flow and reduce operational costs. This case study highlights the technical excellence and practical experience of headpowder in delivering turnkey solutions for complex material handling requirements.
The client, a chemical enterprise based in Chongqing, China, operates a large-scale production facility that manufactures carbon black and rubber products. The existing material handling system suffered from frequent blockages, high maintenance costs, and inconsistent material flow. The plant required a reliable and efficient conveying system to transport carbon black from storage silos to mixing stations, and to feed rubber raw materials into the production line. The key challenges included the fine particle size of carbon black (typically 10-50 microns), its high abrasiveness, and its tendency to agglomerate under pressure. Additionally, the rubber raw materials, such as carbon black pellets and additives, needed to be conveyed without degradation or segregation. The client sought a solution that could handle both carbon black and rubber raw materials in a single integrated system, with minimal dust emission and low energy consumption. After evaluating multiple suppliers, the client selected Shandong Headpowder Engineering Co., Ltd. due to its proven track record in hybrid pneumatic conveying systems and its ability to customize the design for specific material properties.
The hybrid pneumatic conveying system designed by headpowder combines the advantages of dense phase and dilute phase conveying. For carbon black, the system uses a dense phase conveying mode at low velocities (typically 2-6 m/s) to minimize particle attrition and reduce wear on pipelines. The conveying air is supplied by a rotary positive displacement blower, and the material is fed into the pipeline using a specially designed rotary valve. The system includes a series of pressure vessels and air control valves that allow precise regulation of the air-to-material ratio. For rubber raw materials, which are typically more cohesive and have higher bulk density, the system employs a dilute phase mode at higher velocities (8-15 m/s) to ensure complete suspension and prevent settling. The pipeline routing was optimized to minimize bends and vertical sections, reducing pressure drop and energy consumption. The entire system is controlled by a programmable logic controller (PLC) with a human-machine interface (HMI) for real-time monitoring and adjustment. The system also includes a multi-stage filtration unit to capture fine dust particles, ensuring compliance with environmental regulations. The project was completed within a tight schedule of six months, including design, fabrication, installation, and commissioning.
The core of the project is the carbon black hybrid conveying system, which integrates both dense phase and dilute phase technologies to handle the unique properties of carbon black. Carbon black is a fine, light, and highly abrasive powder that is difficult to convey using conventional systems. The hybrid approach allows the system to operate at a low velocity during the initial conveying phase, reducing the risk of particle degradation and pipeline erosion. Once the material reaches a certain point in the pipeline, the system automatically switches to a higher velocity to ensure continuous flow. This hybrid design significantly reduces energy consumption compared to conventional dilute phase systems, while also minimizing dust emissions. The system is capable of conveying carbon black at rates of up to 15 tons per hour over distances of 200 meters, with a conveying pressure of 0.2 to 0.5 MPa. The pipeline is constructed from abrasion-resistant steel with a hardness of HB 400 or higher, and the bends are lined with ceramic tiles to extend service life. The system also includes a purge circuit to clear residual material after each batch, preventing blockages. The successful implementation of this carbon black hybrid conveying solution has enabled the client to achieve a 30% reduction in maintenance costs and a 20% increase in overall conveying efficiency.
In addition to carbon black, the project also includes a dedicated rubber raw material conveying system. Rubber raw materials, such as carbon black pellets, silica, and various additives, have different flow characteristics compared to fine carbon black powder. The system designed by headpowder uses a combination of dense phase and dilute phase conveying to handle these materials. The rubber raw materials are first fed into a hopper with a vibrating feeder to ensure consistent flow. The material is then conveyed through a pipeline using a pressure of 0.3 to 0.6 MPa and a velocity of 10 to 12 m/s. The system is equipped with a diverter valve that allows the material to be directed to multiple discharge points, such as mixers or storage bins. The conveying air is filtered and recirculated to reduce energy consumption and environmental impact. The system also includes a dehumidification unit to prevent moisture absorption by the rubber raw materials, which can cause clumping and degradation. The rubber raw material conveying system has been operating reliably since commissioning, with an availability rate of over 98%. The client has reported that the system has eliminated material segregation issues and reduced the need for manual intervention.
The project was implemented in phases, starting with a detailed feasibility study and site survey by the headpowder engineering team. The design phase involved computational fluid dynamics (CFD) simulations to optimize the pipeline layout and ensure uniform material flow. The fabrication and assembly of the equipment were carried out at the headpowder manufacturing facility in Shandong, China. All components, including the blowers, rotary valves, pressure vessels, and control panels, were tested before shipment. The installation and commissioning were completed on site in Chongqing, with the support of a team of experienced engineers. The entire project was completed within the stipulated timeline and budget. The client reported a significant improvement in production efficiency, with a 25% reduction in conveying time and a 15% decrease in energy consumption. The dust emissions were reduced to below 5 mg/m³, well within the local environmental standards. The system's reliability and low maintenance requirements have led to a payback period of less than two years. The client has expressed high satisfaction with the performance of the headpowder hybrid pneumatic conveying system and has recommended the company for similar projects in the future.
For more information about the carbon black hybrid pneumatic conveying system or to discuss your specific material handling requirements, please contact Zhang Manager at Shandong Headpowder Engineering Co., Ltd. The company is located in Shandong, China, and specializes in providing customized solutions for the chemical, rubber, and powder processing industries. You can reach Zhang Manager via WeChat at 15662777102 for inquiries and technical consultations. Shandong Headpowder Engineering Co., Ltd. (headpowder) has a proven track record of delivering high-quality pneumatic conveying systems that improve efficiency, reduce costs, and enhance product quality. Whether you are handling carbon black, rubber raw materials, or other bulk powders, headpowder can provide a tailored solution to meet your needs. Contact Zhang Manager today to learn more about how our hybrid pneumatic conveying technology can benefit your operation.
The Chongqing chemical enterprise project demonstrates the effectiveness of the carbon black hybrid pneumatic conveying system designed and implemented by Shandong Headpowder Engineering Co., Ltd. The system successfully addresses the challenges of conveying fine, abrasive, and cohesive carbon black, as well as rubber raw materials, using a combination of dense phase and dilute phase technologies. The project has delivered significant improvements in efficiency, reliability, and environmental compliance. The client's positive feedback and the system's long-term performance underscore the expertise of headpowder in the field of bulk material handling. For companies in the chemical and rubber industries seeking to upgrade their material conveying systems, headpowder offers a proven solution with a strong track record of successful projects. The hybrid pneumatic conveying system is a versatile and cost-effective option that can be customized to meet specific material properties and production requirements. For further details, please contact Zhang Manager at WeChat: 15662777102.
Shandong Headpowder Engineering Co., Ltd.
156-6277-7102（Zhang manager） 
0531-83386006 
Jinan City, Shandong, China Province 
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