Study of thermal-flow processes in ash cooler cooperating with CFB boiler

Regucki, Paweł; Andruszkiewicz, A.; Wędrychowicz, W.; Engler, B.

doi:10.1016/j.pisc.2015.11.054

Cited by 2 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this case, residue removal occurs due to mechanical and thermal stresses, induced in the residue [5,6]. The fallen slag will then pass through the ash reject hopper, and then submerged in the water content of SSC [7,8]. Further ash discharging process after SSC, is settled by belt conveyors to the bottom ash silo, or to the ash pond.…”

Section: Introductionmentioning

confidence: 99%

Development and implementation of bottom ash crushing system in Submerged Scrapper Conveyor (SSC) for Coal-fired Power Plant

2017

View full text Add to dashboard Cite

Abstract. The existence of Submerged Scrapper Conveyor (SSC) in coal-fired power plant is to handle the byproduct of bottom ash. However, soot-blowing will be performed sometimes, in order to remove slag formed at the boiler furnace wall. Thence, this lead to a sudden loading of large amount of slags and bottom ash at SSC after soot-blowing, causing SSC conveying system to jam and conveying chain breakage. In this paper, a new SSC design with additional crushing system is proposed. By implementing the new design proposed, it is expected to improve the overall current performances, and to reduce the trip issue of SSC in coal-fired power plant. The new 3D model of SSC is designed, and stress-strain simulation of the model is analysed by using software of PTC Creo Parametric. Final cost and safety factor analysis of model is made to prove its validation.

show abstract

Section: Introductionmentioning

confidence: 99%

Development and implementation of bottom ash crushing system in Submerged Scrapper Conveyor (SSC) for Coal-fired Power Plant

2017

View full text Add to dashboard Cite

show abstract

“…The construction, number and location of the ash coolers are closely related to the combustion chamber type and are important elements of any power boiler [7]. Studies and measurements indicate that the ash coolers are a significant source of waste heat [8]. Nichols et al in [9] have estimated that the potential efficiency improvement for power plants in the USA resulting from the revitalization of the ash removal system would be at a level of 0.1 %.…”

Section: Introductionmentioning

confidence: 99%

Study of heat exchange processes in a screw ash cooler installation

et al. 2017

Self Cite

View full text Add to dashboard Cite

Abstract. The paper presents an example of the thermal-flow analysis of a bottom ash cooler cooperating with a circulating fluidized bed (CFB) boiler. The authors present the methodology of the conducted studies and examples of thermal balance calculations basing on measurement results. The comparison of two different ash coolers indicates a significant relationship between the outlet temperatures of the ash and cooling water depending on the construction and arrangement of the analysed ash coolers. The analysis presented in this paper enables determining the optimal rotation speed of the screw in order to achieve the required temperature of the slag depending on the actual working parameters of the CFB boiler. It provides an opportunity to optimize the heat exchange conditions in order to obtain the highest acceptable water temperature at the outlet of the ash cooler while adhering to safety regulations. The hot water could further be used for internal sanitary purposes or to support heating systems operating in the power plant.

show abstract

Study of thermal-flow processes in ash cooler cooperating with CFB boiler

Cited by 2 publications

References 1 publication

Development and implementation of bottom ash crushing system in Submerged Scrapper Conveyor (SSC) for Coal-fired Power Plant

Development and implementation of bottom ash crushing system in Submerged Scrapper Conveyor (SSC) for Coal-fired Power Plant

Study of heat exchange processes in a screw ash cooler installation

Contact Info

Product

Resources

About