Method and system for controlling purification process through color value monitoring, and method for producing polyhydroxyalkanoate resin
AssigneeCj Cheiljedang Corporation
InventorsDa Eun KIM, Dong June SEO, Han-Sol LEE, Ilgyu LEE, Jung Min KIM, Chang Young HONG
Life of this patent
Estimating the term…
Abstract
According to the present invention, a high-quality polyhydroxyalkanoate resin having excellent color quality can be reliably produced by monitoring the color value during the process of purifying a crude solution containing polyhydroxyalkanoate (PHA) and controlling the conditions of a purification step in real time on the basis thereof.
Claims16
A method for controlling a purification process, which comprises measuring a color value of a process solution or its supernatant in the purification process for preparing a polyhydroxyalkanoate (PHA) resin, or a color value of a purified solution and its supernatant after the purification process;
- and controlling the purification process based on the measured color value.
A system for controlling a purification process, which comprises a purification unit for carrying out the purification process for preparing a polyhydroxyalkanoate (PHA) resin;
- a monitoring unit for measuring a color value of a process solution or its supernatant during the purification process, or a color value of a purified solution and its supernatant after the purification process, and
- a control unit for controlling the purification process based on the measured color value.
A process for preparing a polyhydroxyalkanoate resin from a crude solution comprising a polyhydroxyalkanoate (PHA) through a purification process, which comprises at least one step among (a) measuring a color value of a process solution or its supernatant during the purification process;
- and (b) measuring a color value of a purified solution and its supernatant after the purification process.
Dependencies are inferred from the claim text.