The 150T/h circulating fluidized bed boiler cannot reach the designed load; I seek advice from experts.
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Our plant’s boiler is a 150 tons per hour circulating fluidized bed boiler manufactured by Tangshan Boiler Factory. Over the 10 years of operation, the maximum load has always been 130 tons per hour; when it temporarily reached 150 tons per hour, various problems emerged. For example, tube bursts in the furnace, failures of auxiliary equipment, high flue gas temperatures, and increased air leakage and ash leakage.
Considering the problems that occur when the system reaches full load, it seems there is a defect in the design; simply speaking, these issues cannot be resolved. It’s only possible to determine the cause by examining the design data on-site. It’s advisable to contact the manufacturer for investigation. Additionally, coal-fired boilers are not allowed to be used in Hebei – so where exactly is this location?
It’s the same here; with a boiler of 150, the tubes burst even when it’s operating at full capacity. It’s either the economizer or the water wall that gets damaged, and the boiler can only be operated at 120
First, let’s investigate the cause on-site: 1. If the rated load is not met, check whether the type of coal used is consistent with the design specification Is the particle size of the coal meeting the requirements? 2. If the boiler’s flue gas temperature is high, check the heat intensity in the furnace and the degree of soot accumulation on the heating surface of the tail flue. 3. Check the protection of the heated surfaces for tube burst wear, and apply anti-wear treatment if necessary. 4. Ash leakage and auxiliary equipment failures are common problems in CFB boilers, and improved equipment management is required. If the on-site inspection is completed, then verify the boiler design details with the boiler manufacturer