Real time determination of gas solubility and related parameters in manufacturing processes
US7559223B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2004 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | May 17, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2013/025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatuses for determining entrained and/or dissolved gas content of gas-liquid mixtures. Data generated is used to control the True (air-free) or Apparent (air-containing) Density or Entrained Air content of liquids within optimum ranges, e.g. in paper coating processes and in the manufacture of food products, personal care products, pharmaceutical products, paints, petroleum blends, etc. For example, an indirect method of continuously determining the amount of gas entrained in a liquid, by: continuously measuring the temperature, flow rate, and apparent density of the mixture at two different pressure states, and calculating the volume percentage of the gas in the liquid by using equation (28)wherein V is the volume of the gas-free liquid calculated by equation (23)in which P1 and P2 are two different ambient pressures and ΔP=P2−P1, ρ1 and ρ2 are apparent densities of the liquid sample measured at P1 and P2, respectively, R is the constant of the Ideal Gas Law, T is the liquid temperature, Q is the flow rate, g(ΔP/Qa) is a function for determining the amount of gas being dissolved between P2 and P1, and Vs is determined by equation (27)in which Ps and Ts are standard…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.