Investigation of austenitic stainless steel corrosion resistance against ash deposits from co-combustion coal and biomass waste

Karuana, Feri and Prismantoko, Adi and Suhendra, Nandang and Darmawan, Arif and Hariana, Hariana and Darmadi, Djarot B. and Muflikhun, Muhammad Akhsin (2023) Investigation of austenitic stainless steel corrosion resistance against ash deposits from co-combustion coal and biomass waste. ENGINEERING FAILURE ANALYSIS, 150: 107368. pp. 1-17. ISSN 1350-6307

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Abstract

A high chromium concentration in the boiler material is believed to increase corrosion resistance, especially at high temperatures. It is related to the formation of a protective layer on the surface of the metal, called a chromium oxide (Cr2O3) layer. However, the impact of alkali and chlorine from co-combustion coal with biomass in power plants can harm this protective layer, reducing its effectiveness and potentially leading to increased corrosion. Therefore, it is important to evaluate the impact of these factors on the corrosion resistance of high-chromium materials. This research investigates coal co-combustion with empty fruit bunch (EFB) and plastic waste on the corrosion resistance of austenitic stainless-steel material on a laboratory scale using drop tube furnaces. The investigation steps included probe observation, SEM-EDS on ash and probe material, and XRD. The analysis indicates that the ash from the coal sample did not affect the probe, unlike the coal with EFB or EPL (mixture of EFB and plastic crackles), which caused up to 14% oxide layer degradation. The existence of alkali chloride, sulfate, and silicate in the ash that is still adhered to the surface of the probe can reduce the corrosion resistance of the metal.

Item Type: Article
Uncontrolled Keywords: Superheater; Austenitic stainless steel; Corrosion resistance; Oxide layer degradation; Alkali and chlorine content; Co-combustion
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TJ Mechanical engineering and machinery > Mechanics applied to machinery. Dynamics
Divisions: Faculty of Engineering > Mechanical and Industrial Engineering Department
Depositing User: Rita Yulianti Yulianti
Date Deposited: 31 Oct 2024 08:23
Last Modified: 31 Oct 2024 08:23
URI: https://ir.lib.ugm.ac.id/id/eprint/10405

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