System and method for automatically monitoring concentration change of amine liquid in deacidification process

The invention relates to a system and a method for automatically monitoring the concentration change of amine liquid in a deacidification process. The method comprises the following steps: acquiring a time sequence of amine solution concentration values collected by a sensor; performing absolute quantity time sequence analysis and relative quantity fluctuation analysis on the time sequence of the amine solution concentration value to obtain an amine solution concentration time sequence implicit feature vector and an amine solution concentration change gradient time sequence correlation implicit feature vector; performing co-space dynamic synthesis on the amine liquid concentration time sequence implicit feature vector and the amine liquid concentration change gradient time sequence correlation implicit feature vector to obtain an amine liquid concentration absolute quantity-relative quantity time sequence representation feature vector; and determining a deacidification control instruction based on the amine l