HYDROGEN PEROXIDE INJECTION SYSTEM HAVING CLOSED-LOOP FLOW CONTROL

摘要

A system for injecting liquid hydrogen peroxide using a closed-loop flow control for controlling the injection rate of the liquid hydrogen peroxide. An injection rate is determined from measuring the rotational speed of a pump motor (60). If the determined injection rate varies from the desired injection rate , the speed of the pump motor (60) is modified. Pulse width modulation (PWM) is used to control the pump motor speed.