Dissimilar Metal Welds are required in high temperature sections of boiler reheater and superheater tubing to join low alloy steel tubing to the finishing stainless tubing. The intrinsic difference in the coefficients of expansion cause high stresses to develop at the relatively weak ferritic/weld interface. The power generation industry began to experience failures of type 309 stainless steel ...

Flue gas generated by the wastewater incineration entrains a large number of ash particles which are composed of alkali substances into the heat recovery steam generator (HRSG). The deposition of particles rich in alkali on the tube surface of heat transfer can reduce the heat transfer efficiency; even cause severe capacitylimiting plugging and unscheduled shutdown. In the present work, a full-...

The paper presents a technical solution for modernization with the aim of increasing efficiency steam boiler TPP Ugljevik, which implies reorganization combustion system. More efficient operation furnace can be achieved by replacing existing burners, reducing number burner levels as well organization tangential combustion. flame formed in shape tube around two central vortices provides larger a...

In this article the research of fire resistance limits structures for industrial facilities has been carried out. It is known that building are determined by experimental and computational methods. The to solve problem was based on temperature regime real conditions. purpose study assess production calculating heat mass transfer, taking into account To achieve goal we need following: 1. Investi...

The rigorous development and veri cation of a boiler system speci cation is presented. Part I shows how the boiler system controller can be developed in a series of elaboration steps in which variables that directly re ect plant conditions are replaced by variables representing sensed, communicated values. Part II shows how the safety of the system can be assessed by rst verifying safety relati...

This paper presents an approach to control pluggage of a coal-fired boiler. The proposed approach involves statistics, data partitioning, parameter reduction, and data mining. The proposed approach was tested on a 750 MW commercial coal-fired boiler affected with a fouling problem that leads to boiler pluggage that causes unscheduled shutdowns. The rare-event detection approach presented in the...