Subcritical CFB unit intermittent banking-up near-zero ultra-long depth peak regulation method

• Main Authors: CHENG FANGQIN, WANG XIAOQUAN, JIA YANGJIE, ZHAO MING, ZHANG PEIHUA, ZHANG PUSEN, ZHANG YUANYUAN, YANG FENGLING, XU SHUNZHI
• Format: Patent
• Language: Chinese; English
• Published: 26.01.2024
• Subjects: AIR; BLASTING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; ENGINE PLANTS IN GENERAL; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METHODS OF STEAM GENERATION; METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN; STEAM ACCUMULATORS; STEAM BOILERS; STEAM ENGINE PLANTS; STEAM ENGINES; STEAM GENERATION; WEAPONS

The invention belongs to the technical field of subcritical CFB unit coordination control, and particularly relates to a subcritical CFB unit intermittent banking-up near-zero super-long depth peak regulation method. In order to solve the practical problem that heat storage in a boiler cannot meet the deep peak regulation requirement of a power grid in the near-zero deep peak regulation process of a subcritical CFB unit at present, the method adds an enhanced heat storage link in the near-zero deep peak regulation process of the subcritical CFB unit, and the method is divided into four states and three processes by taking loads as standards according to the operation process and the unit state; wherein the four states comprise a high-parameter heat storage state, a critical stable combustion state, an enhanced heat storage state and a safe fire raising state, and the third process comprises a process heat release section, an enhanced heat storage section and a safe fire raising section. 本发明属于亚临界CFB机组协调控制技术领域，