Patent ID: 8197753
Filing Date: 2012-06-12
Classification: B01D,G05B,Y10T

Abstract:
1. A virtual analyzer for estimating either an attribute of a reactant applied during performance of, or an amount of a reactant exhausted by, a process having multiple process parameters (MPPs) that is performed to control an amount of a pollutant emitted into the air, comprising: an interface configured to receive signals corresponding to attributes of the MPPs, including (i) if the process is a wet flue gas desulfurization (WFGD) process, a signal corresponding to a measured current pH level of the applied reactant, and (ii) if the process is a selective catalytic reduction (SCR) process, a signal corresponding to a measured current amount of the reactant exhausted by the process; one of a neural network process model and a non-neural network process model, the one model representing a relationship between either (i) if the process is a WFGD process, the current pH level of the applied reactant and the attributes of the MPPs other than the measured current pH level of the applied reactant or (ii) if the process is the SCR process, the current amount of the reactant exhausted by the process and the attributes of the MPPs other than the measured current amount of the reactant exhausted by the process; and a processor configured with logic (i) if the process is the WFGD process, to estimate a current pH level of the applied reactant based on the attributes of the MPPs, other than the measured current pH level of the applied reactant, that correspond to the received signals and on the one model, and (ii) if the process is the SCR process, to estimate a current amount of the reactant exhausted by the process based on the attributes of the MPPs, other than the measured current amount of the reactant exhausted by the process, that correspond to the received signals and on the one model.