Patent ID: 7257985
Filing Date: 2007-08-21
Classification: B01D,B01F

Abstract:
1. A method for automatically controlling the output of a continuous process that requires mixing of a solid or liquid component with a liquid carrier component, the method comprising the steps of: a.) setting a quantitative target for weight-% of one or more solids and/or concentration of one or more liquids to the liquid carrier component; b.) continuously mixing said solids and/or liquids with the liquid carrier component; c.) determining the true density, ρ, by employing equation (14) wherein the gas-free volume of fluid, V, is calculated from the equation wherein the solid/liquid mixture with the liquid carrier component is subjected to two different pressures P wherein the corresponding densities ρ d.) calculating the weight-% of solids and/or the liquid concentration in the mixture from the true density ρ so determined; e.) comparing the calculated weight-% solids or concentration to the target weight-% solids or concentration; and, f.) if the calculated weight-% solids or concentration is greater or less than the target weight-% solids or concentration, lowering or raising the amount of solids or liquids mixed in step b.).