In a rubber powder production project in Daqing, Heilongjiang, a mature explosion-proof pneumatic conveying system was successfully put into operation, solving long-standing safety risks and efficiency bottlenecks in material transportation. This system was designed and constructed by a certain company, targeting the explosive and dust-generating nature of rubber powder, achieving safe, sealed, and automated conveying operations.

Customer pain points

Rubber powder is a typical flammable and explosive material, and it faces several prominent challenges during transportation:

• Dust explosion risk: Rubber powder particles are fine and can easily form explosive dust clouds when mixed with air. Traditional mechanical or manual handling can easily cause accidents due to friction or static electricity;
• Severe environmental pollution: Open conveying leads to large dust leaks, which not only increases material waste but also threatens the workshop environment and employee health;
• High labor costs and low efficiency: relying on manual handling or simple equipment, poor continuous operation capability, unable to meet the requirements of large-scale production;
• Frequent equipment maintenance: Ordinary conveying equipment struggles to adapt to the adhesion and wear of rubber powder, resulting in long downtime and maintenance periods.

Solution

To address these pain points, a company customized the explosion-proof pneumatic conveying project for rubber powder in Daqing, Heilongjiang, using a positive pressure dense phase pneumatic conveying process combined with multiple safety protection measures:

• Fully enclosed pipeline system to prevent dust leakage;
• Pipelines and key components should use anti-static materials and be equipped with reliable grounding devices;
• Equipped with inert gas (such as nitrogen) protection interfaces, automatically filling with inert gas under hazardous conditions to reduce oxygen content;
• Integrated online dust concentration monitoring and pressure monitoring systems for real-time early warning and emergency shutdown;
• Uses explosion-proof motors, explosion-proof control cabinets, and electrical components suitable for dust explosion-proof areas.

System advantages

• Security stands out: From pipeline sealing to electrical protection, the entire process meets dust and explosion-proof requirements, reducing accident risks;
• Meets environmental protection standards: No dust leakage, clean workshop environment, meeting environmental emission standards;
• Automated operation:P intelligent LC control, enabling one-touch start/stop, automatic adjustment of conveying speed, and reduced manual intervention;
• Stable and reliable conveying: The dense phase conveying method effectively protects the integrity of material particles, reduces pipeline wear, and extends equipment lifespan.

Since the project was put into operation, the rubber powder transportation process has not experienced any safety anomalies, dust emissions are almost zero, and conveying efficiency has improved by about 40% compared to traditional methods. Maintenance costs have significantly decreased, providing strong support for enterprise safety production and cost reduction and efficiency improvement.