Corrosion Problems in Incinerators and Biomass-Fuel-Fired Boilers

Mudgal, Deepa; Singh, Surendra; Prakash, S.

doi:10.1155/2014/505306

Cited by 40 publications

(10 citation statements)

References 86 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, the previous and current research tendencies in the field of corrosion-resistant coatings are examined, recognizing the discernible knowledge gaps and at the same time seeking to identify the subsequent advancements and research directions in the field. To this end, this review has focused on high-temperature corrosion of metallic coatings and, as such, previously reviewed subjects such as ceramic coatings and high-temperature erosion/corrosion (Ref 11,12,(18)(19)(20)(21)(22) are deliberately not covered.…”

Section: Synopsis Of the Reviewmentioning

confidence: 99%

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants. Part I: Effect of Composition and Microstructure

2019

View full text Add to dashboard Cite

Power generation from renewable resources has attracted increasing attention in recent years owing to the global implementation of clean energy policies. However, such power plants suffer from severe high-temperature corrosion of critical components such as water walls and superheater tubes. The corrosion is mainly triggered by aggressive gases like HCl, H 2 O, etc., often in combination with alkali and metal chlorides that are produced during fuel combustion. Employment of a dense defect-free adherent coating through thermal spray techniques is a promising approach to improving the performances of components as well as their lifetimes and, thus, significantly increasing the thermal/electrical efficiency of power plants. Notwithstanding the already widespread deployment of thermal spray coatings, a few intrinsic limitations, including the presence of pores and relatively weak intersplat bonding that lead to increased corrosion susceptibility, have restricted the benefits that can be derived from these coatings. Nonetheless, the field of thermal spraying has been continuously evolving, and concomitant advances have led to progressive improvements in coating quality; hence, a periodic critical assessment of our understanding of the efficacy of coatings in mitigating corrosion damage can be highly educative. The present paper seeks to comprehensively document the current state of the art, elaborating on the recent progress in thermal spray coatings for high-temperature corrosion applications, including the alloying effects, and the role of microstructural characteristics for understanding the behavior of corrosion-resistant coatings. In particular, this review comprises a substantive discussion on high-temperature corrosion mechanisms, novel coating compositions, and a succinct comparison of the corrosion-resistant coatings produced by diverse thermal spray techniques.

show abstract

Section: Synopsis Of the Reviewmentioning

confidence: 99%

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants. Part I: Effect of Composition and Microstructure

2019

View full text Add to dashboard Cite

show abstract

“…Gaseous chlorine can be generated through the reactions between alkali chlorides and metal scales: The generated Cl 2 can result in higher corrosion rates, internal attack, and voids . Cha studied the corrosive effect of chlorine on eight superheater candidate materials (10CrMo9, X10, X20, Esshete 1250, TP347H, Sanicro 28, AC 66, Alloy 625) at 535 °C under a controlled atmosphere (H 2 O + O 2 + CO 2 + N 2 with/without HCl) and with cyclone ashes as deposits.…”

Section: Corrosion Of Flue Gas Components In Existing Combustion Syst...mentioning

confidence: 99%

“…The first waste-to-energy combustion plant was built in the late 19th century . After that, numerous types of incinerators were deployed, but little work was done to control water discharges and air emissions from the incinerators until clean air acts were issued to ban uncontrolled waste burning. , With the development of air pollution control equipment, modern incinerators have been developed in North America and internationally. Figure is a schematic of a modern incinerator that consists of waste processing system, boiler, and flue gas treatment system.…”

Section: Corrosion Of Flue Gas Components In Existing Combustion Syst...mentioning

confidence: 99%

“…The generated Cl 2 can result in higher corrosion rates, internal attack, and voids. 104 106 Cl-induced corrosion is more obvious when the fuel is straw or other Cl-rich biomass. In several straw-fired power plants in Denmark, field tests found that the alloys, including X3CrNiMoN17-13, 347 steel, DI 59, HCM12, and Esshete 1250, experienced active oxidation in the temperature range of 450−600 °C.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion Mechanisms and Materials Selection for the Construction of Flue Gas Component in Advanced Heat and Power Systems

Zeng

Hughes

et al. 2017

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

With the desire for a clean living environment and the increasing demands for cost competitive energy supply, advanced fuel combustion technologies have been proposed and are being developed. The deployment of these technologies has been hindered by unanticipated corrosion damage within core components (such as boilers and flue gas components) at pilotscale demonstration plants. To deal with such materials technology challenges, studies have been carried out, but there is still substantial R&D required to meet the emerging industrial demands. A comprehensive review of open database information regarding the corrosion of flue gas systems in existing combustion plants was therefore conducted in this review. It is anticipated that this information will provide a basis for addressing knowledge gaps in materials technologies and advancing the mechanistic understanding of how alloys corrode in flue gas operating environments. Corrosion modes, the effects of aggressive agents (including CO 2 , HCl, SO x , and NO x ) in flue gas mixtures, and the performance of candidate metallic materials in typical combustion systems are systemically reviewed and discussed. From corrosion and economic points of view, F/M steels (P91 and P92), austenitic stainless steels (SS317, 254SMO, and 654SMO etc.), and duplex steels (2205 and 2507) are likely to be major candidates for the construction of future flue gas systems in the fossil fuel powered industries. Ni-based alloys, particularly Alloy C-276 and Alloy C-22, are more applicable for flue gas components in biomass and waste-to-energy energy combustion systems.

show abstract

“…There has been extensive research within this field, both basic research and applied research as summarized by references [1][2][3][4] and the presence of Cl species, especially KCl is clearly responsible for the high corrosion rates. Some of the key references from laboratory research which have furthered the understanding of the corrosion mechanism in biomass boilers are outlined.…”

Section: Introductionmentioning

confidence: 99%

Danish Experiences in Biomass Corrosion and Recent Areas of Research

Montgomery

Malede

et al. 2018

CORROSION

View full text Add to dashboard Cite

In Denmark, biomass has been implemented in the majority of power plants either by firing biomass alone or co-firing of biomass and fossil fuels/additives. This has resulted in an accumulation of experience over the past two decades both from corrosion testing and also the assessment of failures which has given understanding with respect to alloy selection and corrosion rates at various temperatures. Many laboratory investigations focusing on specific aspects of corrosion in controlled atmospheres have also been undertaken to give improved understanding of corrosion mechanisms. However, there are still areas where further investigations are underway, with respect to both laboratory and field testing. The present focus areas of research include: a) Use of coatings in biomass power plants where the coatings perform differently in different biomass plants depending on fuel mix and temperature b) Importance of understanding the microstructure of component materials and how microstructure evolution with time and temperature can influence corrosion. This paper will recap past experience and highlight some of the results from the new research. Based on the brief review of research in the field, and the research described in detail in this paper, critical unresolved issues and a way forward for the industry is presented.

show abstract

Corrosion Problems in Incinerators and Biomass-Fuel-Fired Boilers

Cited by 40 publications

References 86 publications

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants. Part I: Effect of Composition and Microstructure

Advances in Corrosion-Resistant Thermal Spray Coatings for Renewable Energy Power Plants. Part I: Effect of Composition and Microstructure

Corrosion Mechanisms and Materials Selection for the Construction of Flue Gas Component in Advanced Heat and Power Systems

Danish Experiences in Biomass Corrosion and Recent Areas of Research

Contact Info

Product

Resources

About