What is the hot start of a circulating fluidized bed boiler?
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What is the hot start of a circulating fluidized bed boiler?
Given the characteristics of circulating fluidized bed boilers, after shutdown, when the bed temperature remains above the specified level, it is possible to start the induced draft fan, as well as the primary and secondary fans and the coal feeding fan, without performing any purging process, and to carry out pulse-type coal feeding. As the bed temperature gradually rises and the steam temperature and pressure reach the required levels, various processes such as starting the turbine, connecting it to the grid, and operating it under load can be completed. Hot start is one of the advantages of circulating fluidized bed boilers; it enhances the unit’s peak-shaving capacity, reduces the consumption of auxiliary power, and improves the efficiency of the unit.
Based on the characteristics of circulating fluidized bed boilers, after shutdown, when the bed temperature remains above the specified value, it is possible to start the induced draft fan, the primary and secondary fans, as well as the coal feeding fan directly, without performing a purging process, in order to feed coal in a pulsed manner； As the bed temperature gradually rises and the steam temperature and pressure reach the required levels, a series of processes such as the startup of the turbine, its connection to the grid, and operation under load can be completed. Hot start is one of the advantages of circulating fluidized bed boilers; it enhances the unit’s peak-shaving capacity, reduces the consumption of auxiliary power, and improves the efficiency of the unit.
Given the characteristics of circulating fluidized bed boilers, after shutdown, when the bed temperature remains above the specified level, it is possible to start the induced draft fan, as well as the primary and secondary fans and the coal feeding fan, without performing any purging process, and to carry out pulse-type coal feeding. As the bed temperature gradually rises and the steam temperature and pressure reach the required levels, various processes such as starting the turbine, connecting it to the grid, and operating it under load can be completed. Hot start is one of the advantages of circulating fluidized bed boilers; it enhances the unit’s peak-shaving capacity, reduces the consumption of auxiliary power, and improves the efficiency of the unit.