TH25973A - Methods for the control of sulfite oxidation in the desulfurization process of combustion gases. - Google Patents

Abstract

Method of sulphite oxygen regulation in the desulfurization process of the gas at It is obtained from combustion which involves the conditioning of flue gases with a absorbent fluid containing compounds. Calcium and sulfite oxidation regulation by regulating the oxygen flow into the absorption fluid. The oxygen flow is regulated by continuous monitoring of the oxidation-reduction potential (ORP) of the absorbed fluid compared to that of the same fluid in a completely oxidized state by the use of the instrument. Inspected with a number of fluid tanks One bucket acts as a reference tank at any specific time. All oxidizers are changed from time to time, reducing the bonding of the oxidizing agent to the ORP electrode, enabling precise measurements and reducing the chemical oxygen demand of the wastewater.

Claims (5)

1.Methods for sulphite oxidation control in gas desulfurization processes. Which is obtained by combustion by flue gases containing sulfur oxide and is treated with absorbent fluid containing It consists of calcium, and oxygen-containing gases that are passed through the absorbed fluid to oxidize the resulting calcium sulfite. And cause gypsum The above methods include continuous monitoring of deviation signals. There is a sequence between the oxidation-reduction potential of the absorption fluid and the oxidation-reduction potential of the absorbed fluid in the completely oxidized state by means of the oxidation-reduction potential probe and the flow rate control of the absorption fluid. A gas which contains oxygen in response to a deviation signal. The second order between the first deviation signal and the value is determined; By an order of deviation signals Being monitored continuously By using an oxidation-reduction potential electrode In the inspection machine installed With a number of fluid tanks, there is one which acts as a reference tank at a given time, by which the oxidation-reduction potential of the absorbed fluid in a completely oxidized state is examined in such reference tank through which air is passed, and The reference tank is changed by changing the air channel to another fluid tank at the specified intervals. 2. Methods for controlling the oxidation of sulfite according to claim No. 1 by the detector. Test the oxidation-reduction potential. Was installed with three fluid tanks 3. The method of claim No. 1, by changing the condition of the reference tank, is timed whereby the The bonding of the oxidizing agent to the electrode of the oxidation-reduction potential has been reduced or significantly prevented 4. The method of claim No. 1 by changing the condition of the reference tank is performed automatically. Using a timer as a wizard 5. Method of claim No. 1, by which the time is predetermined for change to reference on It relates to the chemical oxygen demand of the wastewater