G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/77 (2006.01) G01N 21/64 (2006.01) G01N 33/34 (2006.01)
Patent
CA 2159049
The present invention claims a method of monitoring a papermaking system containing impurities and containing a dosage of a treating component to determine the level of treating under operating conditions comprising the adding to the papermaking system a water soluble fluorescent tracer in an amount proportioned to the amount of treating component in the system, the fluorescent tracer being inert to the papermaking environment. A sample solution is withdrawn from the system containing both the component and tracer and the withdrawn sample is subjected to an analysis which comprises the step of comparing the tracer concentration to a standard to determine the concentration of tracer in the sample. After determining the variance of the treating component dosage as compared to the standard, the dosage is adjusted by changing the volume of water or the dosage of treating component in the papermaking system to maintain an acceptable operating range of concentration for the treating component. A further embodiment of the invention comprises providing instrumentation including an analyzer having a flow cell for receiving a sample of circulating water from the papermaking system and for sensing a characteristic of the tracer indicative of its concentration, the analyzer having a transducer for converting the characteristic to a voltage analog thereof; a monitor for receiving said voltage analog and for continuously comparing it to a voltage standard representing a standard tracer in consumption of the treating component, the monitor generating an output signal when the comparison establishes nonstandard performance; and a pump unit for introducing the proportioned treating component and tracer at a predetermined dosage, the output signal controlling the pump unit to alter the dosage of treating component. The present invention further provides a method for detecting leakage between an industrial process fluid and a temperature-conditioning fluid in a papermaking comprising at least a sample of at least one of such fluids to analysis to detect the presence and/or the concentration of a signature compound therein, and al times the concentration change and/or concentration gradient of the signature compound in at least one of such fluids. In a preferred embodiment at least one of such fluids is an aqueous-based fluid. In another preferred embodiment the analysis is a fluorescence analysis or a combination of high pressure liquid chromatography and fluorescence analysis.
Nalco Chemical Company
Smart & Biggar
LandOfFree
Fluorescent tracers for diagnostic use in pulp and paper does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fluorescent tracers for diagnostic use in pulp and paper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluorescent tracers for diagnostic use in pulp and paper will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1982216