Patent ID: 11883781
Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
Field: Chemical engineering (Chemistry)
Classification: CPC B  Y | IPC B

Claim 8:
9. The apparatus of claim 7, further comprising:
a first storage tank located under the first channel and storing the reducing agent;
a first water tank installed to supply the reducing agent to the first storage tank;
an ORP sensor measuring an ORP of the reducing agent stored in the storage tank;
a second storage tank located under the second channel and storing the neutralizing agent;
a second water tank installed to supply the neutralizing agent to the second storage tank;
a pH sensor measuring the pH of the neutralizing agent stored in the second storage tank; and,
a control unit calculating an NOx removal rate based on the measured value of the ORP sensor according to the concentration of NOx of the gas analyzer, outputting the concentration of H2S based on the measured value of the pH sensor, and controlling input timing and an input amount of the reducing agent and the neutralizing agent according to a set reference value of the NOx removal rate or a set reference value of H2S generation concentration.