Fireside corrosion and deposition on heat exchangers in biomass combustion systems

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials at High Temperatures Pub Date : 2022-10-31 DOI:10.1080/09603409.2022.2138007

S. Mori, T. Sanusi, N. Simms, J. Sumner

引用次数: 1

Abstract

ABSTRACT To address climate change, power plants need to switch to greener fuels. One possible fuel is biomass; a carbon neutral/low carbon fuel. However biomasses’ chemistries are both different from coal’s and vary depending on their sources, containing unique levels of the trace elements (e.g., Cl and S) capable of altering the degradation of heat-exchangers. As such, an understanding of the effects of these variations on fireside corrosion is needed. Laboratory testing exposed alloys T91 and TP347HFG in a simulated agricultural product combustion environment at 600°C (up to 1000h; 100h cycles). Three different deposits mixtures were investigated (comprised of KCl, K2SO4, Na2SO4, CaSO4 indifferent percentages) mimicking accelerated corrosion from different biomasses. Corrosion behaviour was found to be dependant on both alloy and deposit chemistries, with the two materials showing different responses. The deposit with lowest KCl showed lowest corrosion damage, while the highest KCl deposit showed more aggressive behaviour.

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生物质燃烧系统中热交换器炉边腐蚀与沉积

为了应对气候变化，发电厂需要转向更环保的燃料。一种可能的燃料是生物质;碳中性/低碳燃料。然而，生物质的化学成分与煤的化学成分不同，并因其来源而异，其中含有独特水平的微量元素(如Cl和S)，能够改变热交换器的降解。因此，有必要了解这些变化对炉边腐蚀的影响。实验室测试暴露合金T91和TP347HFG在模拟农产品燃烧环境600°C(长达1000h;100 h周期)。研究了三种不同的沉积物混合物(由不同百分比的KCl、K2SO4、Na2SO4和CaSO4组成)，模拟不同生物质的加速腐蚀。发现腐蚀行为依赖于合金和沉积化学，两种材料表现出不同的反应。KCl最低的镀层具有最低的腐蚀损伤，而KCl最高的镀层具有更强的腐蚀行为。

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来源期刊

Materials at High Temperatures 工程技术-材料科学：综合

CiteScore

1.90

自引率

15.40%

发文量

审稿时长

>12 weeks

期刊介绍： Materials at High Temperatures welcomes contributions relating to high temperature applications in the energy generation, aerospace, chemical and process industries. The effects of high temperatures and extreme environments on the corrosion and oxidation, fatigue, creep, strength and wear of metallic alloys, ceramics, intermetallics, and refractory and composite materials relative to these industries are covered. Papers on the modelling of behaviour and life prediction are also welcome, provided these are validated by experimental data and explicitly linked to actual or potential applications. Contributions addressing the needs of designers and engineers (e.g. standards and codes of practice) relative to the areas of interest of this journal also fall within the scope. The term ''high temperatures'' refers to the subsequent temperatures of application and not, for example, to those of processing itself. Materials at High Temperatures publishes regular thematic issues on topics of current interest. Proposals for issues are welcomed; please contact one of the Editors with details.