Temperature stress of waste bunker in municipal solid waste incineration power generation plant

Abstract

With large number of municipal solid waste incineration power generation plants appearing, serious environmental pollution will be caused if temperature cracks appear in waste bunkers. To reveal the interaction between the surrounding soil and bunker walls under the action of temperature, a finite element model is established. Considering the surrounding soil layer, the characteristics and influence laws of the interaction between the municipal solid waste bunker and the soil under different temperature conditions are studied. The simulation results show that the existence of the surrounding soil layer will affect the stress distribution, mainly at the bottom of the bunker and the surface of the bunker wall. Due to the thermal expansion and contraction, the municipal solid waste bunker is pressed during the heating process. In the process of cooling, there will be excessive tensile stress at the bottom of the bunker. To address this problem, expansion belt is arranged at the stress concentration portion to reduce the stress concentration. This measure proves to be effective according to analysis results, which provides a reference for the design of municipal solid waste bunkers.

Numerical simulation of co-incineration of sewage sludge and municipal solid waste in municipal solid waste incinerator

“…In some cases, the LHV even approaches the upper limit of incinerator design, which seriously affects the stable and safe operation of MSW incinerators. It provides the possibility and commercial application value of sludge mixing in MSW incinerator.Computational fluid dynamics (CFD) is widely used in the design and operation optimization of large-scale combustion equipment, including waste incinerator and coal-fired boiler [8,9]. The CFD technique has unique advantages over the analytical calculations, including ease of use, time efficiency, and the ability to readily change [10][11][12][13].…”