Dilute phase pneumatic conveying
Dilute phase pneumatic conveying is mainly used to transport bulk powdery and granular materials to the specified equipment through air flow that output from roots blower, and then the materials are discharged into pipes for pressure delivery by rotary feeder.
Dilute phase pneumatic conveying is a high speed pneumatic conveying, suitable for dispersion conveying from one place to several places, with materials constantly being suspended in airflow, it is best used for non-abrasive and non-fragile materials with low density, such as flour, corn starch or fly ash.
The main equipment of dilute phase pneumatic conveying system: roots blower, rotary feeder, air extraction room, acceleration room, PLC control system, silo roof dust collector, conveying pipeline, wear-resistant elbow etc.
Dense phase pneumatic conveying
Dense phase pneumatic conveying is often used for conveying materials at low-speed and long-distance with large conveying capacity. During the conveying process, it can realize single-point-to-single or single point to multi-points long-distance conveying, and can finish drying, crushing, screening and mixing technologies. SRON has the case experience in the construction of projects with 1000m conveying distance and 200t/h conveying capacity.
Dense phase pneumatic conveying is a low speed conveying system without materials being suspended in airflow, and there is not much wear on materials and pneumatic conveying system, so it is suitable for conveying fragile materials. And there is no need of air drying equipment for slightly moisture absorbing materials.
Main equipment of dense phase pneumatic conveying: air compressor, gasholder, silo pump, dust collector, PLC control system, pipes and elbows.
Comparison of the two conveying modes
- Dense phase pneumatic conveying has a longer conveying distance and larger conveying capacity. And its low conveying speed helps to minimize wear of materials and system, suitable for the transportation of fragile materials.
- Dilute phase pneumatic conveying is suitable for non-abrasive and non-fragile materials with low density, such as flour, corn starch and fly ash.
- Generally, dense phase pneumatic conveying is more energy-efficient.
- Dense phase pneumatic conveying system has a higher cost and it is intermittent.