Pneumatic conveying of powder

When performing pneumatic conveying of powders, the following points should be noted: 1. Determine the type of conveying system (e.g., phase conveying systems such as dilute-phase or dense-phase conveying), and select the appropriate type based on the properties of the material and the conveying distance. 2. Control the flow rate of the conveying gas to prevent material wear or pipe blockage caused by too high a flow rate. 3. Ensure the inside of the pipeline is smooth to reduce friction and accumulation of material during transportation. 4. Use high-quality separation equipment to ensure effective separation of gases and materials. 5. Regularly inspect the key components in the system, such as cyclones, filters, and pipes, to ensure they are clean and in good condition. Regarding the specifications for powdered materials, it is recommended to consult relevant industry standards such as the “Handbook of Powder Engineering Technology”, or to seek advice from professional suppliers of powder conveying equipment for more detailed technical support and specifications. .

What are the main issues regarding safety?

During the pneumatic transportation of powders, the following safety issues need to be taken into consideration: 1. Explosion prevention: Some powdered materials such as flour and powdered sugar can form flammable dust under certain conditions; it is necessary to ensure that the design of the transportation system meets explosion prevention standards and that appropriate measures are implemented to prevent explosions. 2. Equipment maintenance: Regularly inspect and maintain the equipment, especially pipelines and connecting components, to prevent leaks or blockages, as these issues can lead to abnormally high system pressure and cause accidents. 3. Static electricity protection: Ensure that the conveying system has proper grounding to prevent static electricity buildup from causing sparks or explosions. 4. Safety training: Provide necessary safety training to operators to ensure they are aware of the safe operating procedures and emergency measures for the equipment. 5. Environmental control: Maintain good ventilation in the conveying area to prevent dust accumulation and reduce potential hazards. The above measures help ensure the safety of the pneumatic powder conveying process. .

Reference can be made to SH/T 3152-2021, Code for Design of Powder and Granular Material Conveyance in Petrochemical Industry

If there is a risk of explosion, nitrogen must be used for transportation