The positive pressure pneumatic conveying system (also called the dilute phase positive pressure pneumatic conveying system or the gas transportation and delivery system) uses the airflow output from the blower (such as a Roots blower) as a carrier to transport the bulk granular material into the designated equipment by airflow. The rotary feeder or the screw feeder discharges the granular material into the pipeline for pressure feeding. The positive pressure value of the dilute phase positive pressure pneumatic conveying system is less than 0.15 MPa and the gas to solid ratio is 5 to 20.
Working principle of positive pressure pneumatic conveying system:
The positive pressure pneumatic conveying system is a theory that combines the principle of pneumatic differential pressure with jet flow technology and fluidization technology to fully absorb the theory of modern pneumatic conveying two-phase flow. After many years of operation and practice, it is aimed at a large number of powder pneumatic conveying processes. Special equipment developed at close range requiring continuous transportation characteristics, used in thermal power plant ash removal systems, cement, metallurgy, chemical, dock and other systems. The conveying pump in the pneumatic conveying system is composed of a diffusion chamber, a mixing chamber, an active air duct, and an actuator. The low-pressure air passes through the air inlet pipe, the mixing chamber, and enters the diffusion chamber. The high-speed airflow vaporizes the material around the nozzle through the mixing chamber, and the airflow from the nozzle into the diffusion chamber forms a partial negative pressure in the nozzle and the diffusion chamber, and the vaporized material is sucked into the delivery pipe and is lifted by the high-speed airflow to the discharge point.
