High Temperature Corrosion Protection of Heating Surface Metals of Waste Incineration Power Generation Boilers: A Review

Qu, Zuopeng; Zhong, Rigang; Wang, Lei; Zhao, Wenbo; Tian, Xinli; Wang, Haijun

doi:10.1088/1742-6596/1649/1/012031

Cited by 5 publications

(4 citation statements)

References 3 publications

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“…UA918U). Недолік конструкції -істотне забруднення лопаток колеса високотемпературною твердою дисперсною фазою, а також потреба застосування для його виготовлення жаротривких та жароміцних конструкційних матеріалів [45,46].…”

Section: за можливістю пересування у просторі розрізняють печі стаціо...unclassified

Municipal Solid Waste Incineration Furnaces (Review)

Микулёнок

2023

Energ. Tech. & Res. Sav.

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The purpose of the research was to carry out a critical analysis of the structural and technological design of the process of incineration of municipal solid waste» (MSW). Data on the volume of solid waste generation in the world, Ukraine and Kyiv are given, the need to improve ways of effective solid waste management, in particular their disposal, is shown. A classification of furnaces and furnaces for solid waste burning has been developed. Designs of the specified technological equipment were analyzed depending on the power (productivity), the nature of the MSW incineration process over time, the possibility of movement in space, as well as the mechanism of the incineration process. A critical review of the most common designs of furnaces and furnaces, including layer, rotary, fluidized bed, cyclone, shaft, with a liquid melt bath, as well as floor furnaces and furnaces, is performed. A critical review of the most common designs of furnaces and furnaces, including layer, rotary, fluidized bed, cyclone, shaft, with a liquid melt bath, as well as floor furnaces and furnaces, is performed. This review is primarily based on a critical analysis of scientific and technical sources of information and, above all, patent information of the leading countries of the world, since it is the patent documentation that provides information on innovative developments in the relevant field of engineering and technology. Analysis of the current state and prospects for the use of furnaces and furnaces for MSW incineration shows that the appropriate technological equipment for MSW incineration, as one of the simplest and most effective for obtaining thermal and/or electrical energy and disposing of waste, will be used for solid waste processing for a long time to come. The main efforts are aimed at creating high-performance universal energy-efficient equipment, characterized by low material consumption, ease of maintenance and low negative impact on the environment and human health. Bibl. 62, Fig. 17.

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Section: за можливістю пересування у просторі розрізняють печі стаціо...unclassified

Municipal Solid Waste Incineration Furnaces (Review)

Микулёнок

2023

Energ. Tech. & Res. Sav.

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“…5 This unique blend of mechanical properties has made it an ideal choice in crucial applications that involve high operating temperatures. 6 It is used in a variety of applications, such as gas turbines, chemical power plants, marine industries, and aircraft engines, and is predominantly used in valves, pumps, and conduit lines for high-temperature and pressure-carrying areas of CSP plants. [7][8][9] The welding of superalloys and stainless steels (SSs) has become essential in the manufacture of components for turbine blade (Inconel)-shaft (SS) assembly in aero-engines.…”

Section: Introductionmentioning

confidence: 99%

Evolution of microstructure, microhardness, crystallographic texture, and grain size variation in dissimilar joints used in concentrated solar power plants application

Nandhakumar

Kumar

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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High carbon stainless steel 347H (SS347H) and Inconel 625 (IN625) are high-strength alloys, commonly used in high-temperature applications. These metals are commonly used in the fabrication of concentrated solar power energy storage tanks and pipelines. Construction of such tanks involves dissimilar welding as the primary manufacturing process. The critical factor to consider when joining two different materials is the development of microstructure, as it directly impacts the mechanical characteristics of the joints. According to the available literature, an increase in the heat input (HI) promotes alloying element segregation and susceptibility to weld cracking. Traditional arc welding processes, such as metal inert gas (MIG) welding, produce a higher HI. Therefore, there is a need to develop welding techniques that result in reduced HI. In the present study, a pulse-current MIG (PC-MIG) welding method was employed, utilizing current pulsing to minimize HI during the welding process. The welding was followed by metallographic and mechanical characterization. The microstructural examination found variations in microstructure at different regions. Electron backscatter diffraction analysis shows the crystallographic orientation at different regions. Analysis shows that both SS347H and IN625 have a face-centred cubic austenite structure. The inverse pole figure discloses strong texture formation. The average tensile strength of dissimilar weldments was found to be 479 MPa, while the average hardness value of the fusion zone was measured to be 235 HV. The research indicates that the PC-MIG technique is suitable for joining dissimilar materials with reduced HI, effectively eliminating the risk of cracking and enhancing the efficiency of the joint.

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“…In such a severely corrosive environment, various coatings are used to protect the super-heater tubes of WTE plants, which are typically made from Type 310 heat-resistant steel. [1][2][3][4] It is well known that enhanced oxidation degradation, so called "active oxidation", occurs on oxidation resistant alloys in chlorine-containing atmospheres due to simultaneous oxidation and chlorination reactions within the oxide scale when chlorine penetrates the oxide scale to the metal/oxide scale interface. Under "active oxidation", metal chlorides generated by chlorination of a metal substrate or oxides within the oxide scale where the oxygen potential is sufficiently low are oxidized to form a very porous, sponge-like oxide scale that is less protective.…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature Gradient in Ash on High-Temperature Corrosion of Super-Heater Material in a Waste Power Generation Boiler

Furugaki¹,

Takahashi²,

Hayashi

2022

Oxid Met

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The effect of the temperature gradient in ash deposition on the high-temperature corrosion behavior of heat-resistant steels used for super-heater tubes in a Waste-to-energy (WTE) boiler plant was investigated by conducting ash embedded corrosion tests using combustion ash from the actual boiler. The ash embedded corrosion test was carried out under two conditions: 1) an isothermal corrosion test at 460 °C, and 2) a temperature gradient corrosion test with a specimen temperature of 460 °C and an atmospheric temperature of 685 °C in air. The corrosion mass loss was found to be much greater under higher atmospheric temperatures where the same specimen temperature was maintained than under the same atmospheric temperatures where the specimen temperature was kept at a constant 460 °C. The cross-sectional observation of the ash after the temperature gradient corrosion test revealed that the alkali salt mixture was melted in the region above the melting point of the ash, however, no penetration of the melt reaching to the specimen surface was confirmed, suggesting that the corrosion was produced by a gas-solid reaction. Thus, the faster corrosion kinetics of the heat-resistant steels under an ash deposit with a temperature gradient can be attributed to breakdown of an initially formed protective Crrich oxide scale by a reaction with a vapor of alkali salts to form less protective alkaline chromates. The difference in the potentials of the alkali salt across the ash deposit due to the temperature gradient could be the driving force that increases the flux of the alkali salts towards the specimen surface, which accelerates the formation of chromates and the rate of breakdown of the protective Cr-rich oxide scale.

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High Temperature Corrosion Protection of Heating Surface Metals of Waste Incineration Power Generation Boilers: A Review

Cited by 5 publications

References 3 publications

Municipal Solid Waste Incineration Furnaces (Review)

Municipal Solid Waste Incineration Furnaces (Review)

Evolution of microstructure, microhardness, crystallographic texture, and grain size variation in dissimilar joints used in concentrated solar power plants application

Effect of Temperature Gradient in Ash on High-Temperature Corrosion of Super-Heater Material in a Waste Power Generation Boiler

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