Pressure Conveying System

Where strict environmental control is not necessary, an open system is generally used. Most pneumatic conveying pipeline systems can ensure totally enclosed material conveying, and so with suitable gas–solid separation and venting, the vast majority of materials can be handled quite safely in open systems. Many potentially combustible materials are conveyed in open systems by incorporating necessary safety features. Air is used for conveying most materials. Nitrogen and other gases can be used for particular materials and applications, but because of the added cost of operation, closed-loop systems are more commonly used in these cases.