IN-LINE PROCESS MONITORING FOR CHEMICAL CONCENTRATION
UV-Vis measurement is a well-accepted technology to check the concentration of a chemical in the production process. Usually these measurements are performed off-line.
The delay between sampling and obtaining the results from the laboratory can result in large losses if the products are off spec. A significant disadvantage is that only a single measurement is generated in this time period and the concentration during, before, and after the sampling point is unknown.
With the in-line chemical measurements taking place directly in the process, not only is complete documentation possible, but when variations occur, real-time process parameters adjustments are therefore possible.
In chemical engineering a unit operation is a basic step in a process. Unit operations involve a physical change or a chemical transformation such as separation, crystallization, mixing, evaporation, filtration, polymerization, and other reactions.
Monitoring concentrations of chemicals in liquids, gases, slurries, pastes, and powders is a critical step in product quality.
In-line measurement helps determine reaction end-point determination, by-products/reactants concentrations, and product purity. Most importantly, it provides accountability tracking for sensitive materials, cleaning validation, waste reduction, and reaction optimization.
Single wavelength or sophisticated chemometric models may be used for concentration predictions. The standard analyzer supports two probes with
dedicated lamp compensation channels [all fiber-optic double-beam design].
Equitech’s fiber optic probes allow for easy access into the process. Equitech offers probes for both reflection and transmission measurements for almost
every sample type.