Patent ID: 7905653

Claim:
A blending system, comprising: a first material supply line; a second material supply line; a static mixer fluidly connected downstream of the first and the second material supply lines; a process control system comprising a first flow control device positioned on the first material supply line and a second flow control device positioned on the second material supply line, a first sensor positioned downstream of the static mixer, and a controller comprising logic code to provide a control signal to the first and second flow control devices based upon a sensor signal provided by the first sensor, the controller programmed to individually adjust the first and second flow control devices to achieve a desired blend of process materials; a holding vessel including an inlet and an outlet; and a recirculation line fluidly connected to the inlet and the outlet of the holding vessel, and to at least one of the first and second material supply lines; wherein one of the first flow control device and the second flow control device is fluidly connected to the recirculation line and to a respective one of the first and second material supply lines to control the amount of process material that is diverted from the recirculation line to the first material supply line.