Boiler inspection
Thread Content
Boiler expert: Our plant has purchased two 75T/h circulating fluidized bed boilers. The technical agreement specifies that coal with a calorific value of 3800 KCOL/Kg, i.e., low-calorific-value coal, shall serve as the basis for design; however, the coal that can be used with these boilers has a calorific value of 5000–5600 KCOL/Kg. The boiler operation manual mentions on two occasions that there is a need for a design institute to issue a legally valid certification, based on the technical data provided by the boiler manufacturer, to confirm the appropriate coal type for use in these boilers as well as the relevant thermal calculations. Paid technical messaging. Contact number: 13970276273, Mr. Wang. This post was last edited by wangln2371 on 2008-2-21 at 15:16.]
There is no difference in the furnace design between boilers that use low-quality coal and those that use high-quality coal; the main differences lie in the backflow control design and the dust removal system. It is recommended that the boiler owner consult the Eighth Research Institute of Chemistry or large boiler manufacturers, as they can provide assistance.
Thank you! Is the furnace cross-sectional area unrelated to the type of coal used?
There is a lot of empiricism involved in thermal calculations, and different manufacturers use different values for certain coefficients. The calculation results from other manufacturers can only serve as a reference; what really matters is whether the relevant parameters of the boiler meet the requirements specified in the specifications, as this is what determines whether the boiler is qualified.