| 摘要 |
A method of and apparatus for controlling the efficiency of mixing of a mixer, comprising injecting a chemical (18) into a process fluid (14) flowing in a pipe (12), mixing the chemical with the process fluid with a mixer (20) operating at a first operation rate, wherein the method comprises further steps of measuring an efficiency of mixing of the chemical and the process fluid (34) within the pipe downstream of the mixer, comparing the measured efficiency of mixing with a predetermined efficiency of mixing range, controlling the operation rate of the mixer so as to adjust the efficiency of mixing to the predetermined efficiency of mixing range. The efficiency of mixing is preferably measured by using a set of electrodes (30) disposed on the periphery of the pipe (32), and the efficiency of mixing is preferably obtained by the use of electrical impedance tomography. |
