Thermal power generating unit SCR flue gas denitration control method and device

• Main Authors: LI HONGTAO, WANG HUAIFU, GUO RENLONG
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

The invention discloses a thermal power generating unit SCR flue gas denitration control method and device, and relates to the technical field of thermal power generating units, the method comprises the following steps: nitrogen oxide parameters in a DCS system preset period are obtained, and the nitrogen oxide parameters comprise boiler efficiency, raw material ammonia water cost and environmental protection cost; obtaining a nitrogen oxide emission target value according to the boiler efficiency, the principle ammonia water cost and the environmental protection cost; on the basis of the nitrogen oxide emission target value, nitrogen oxide control parameter indexes are obtained through a preset neural network model; and controlling according to the nitrogen oxide control parameter index. According to the method, the minimum marginal cost, namely the optimal balance point, of the ammonia water cost and the environmental protection tax cost can be accurately mastered, reasonable control indexes are determined,