Patent ID: 8423303
Filing Date: 2013-04-16
Classification: G01F

Abstract:
1. A method for real time measurement of mass flow rate of bulk solids, wherein said bulk solids are loaded, or unloaded, by a pneumatic transport system having a pipe section along which are located at least two spaced-apart pressure gauges (P 1 ,P 2 ), the method comprising: Determining pressure drop ΔP between said pressure gauges based on information provided by the pressure gauges during gas-solids flow of air and bulk solids through the pipe section, by a computing device, calculating suspension density ρ by a computing device, estimating the bulk solids mass flow rate M wherein said suspension density ρ where K is the coefficient of friction of the bulk solid flowing through the pipeline, D is the pipe diameter, L is the length of the pipe section between pressure gauges (P V is the local air velocity at the section where the first pressure gauge (P