Influence of deposit formation on corrosion at a straw-fired boiler

Hansen, Lone Aslaug; Nielsen, Hanne Philbert; Frandsen, Flemming; Dam‐Johansen, Kim; Hörlyck, Steffen; Karlsson, Asger

doi:10.1016/s0378-3820(00)00063-1

Cited by 175 publications

(139 citation statements)

References 11 publications

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“…Understanding the fuel characteristics is necessary in studies on ash deposition as the fuel characteristics would affect fly ash deposition behaviors during combustion and play an important role in optimizing combustor/boiler design for enhanced combustion efficiency and less operation problems, especially when biomass is used [4][5][6]. Table 1.…”

Section: Influence Of Biomass Fuel Characteristics On Ash Deposition mentioning

confidence: 99%

Ash Deposition in Biomass Combustion or Co-Firing for Power/Heat Generation

et al. 2012

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This paper presents a concise overview of ash deposition in combustion or co-firing of biomass (woody biomass, agricultural residues, peat, etc.) with other fuels for power/heat generation. In this article, the following five research aspects on biomass combustion ash deposition are reviewed and discussed: influence of biomass fuel characteristics, deposit-related challenges, ash deposition monitoring and analysis of ash deposits, mechanisms and chemistry of fly ash deposition, and key technologies for reducing ash deposition and corrosion in biomass-involved combustion.

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Section: Influence Of Biomass Fuel Characteristics On Ash Deposition mentioning

confidence: 99%

Ash Deposition in Biomass Combustion or Co-Firing for Power/Heat Generation

et al. 2012

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“…K and Cl have been considered in previous studies to be the critical inorganic elements which are responsible for ash deposit formation and corrosion [22][23][24][25]. Of the inorganic elements investigated, K and Cl show the most significant decrease following leaching.…”

Section: K and CLmentioning

confidence: 99%

Leaching as a Pretreatment Process to Complement Torrefaction in Improving Co-firing Characteristics of Jatropha curcas Seed Cake

Madanayake

Gan

Eastwick

et al. 2015

Waste Biomass Valor

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(2016) Leaching as a pretreatment process to complement torrefaction in improving co-firing characteristics of Jatropha curcas seed cake. Waste and Biomass Valorization, 7 (3 A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractThe presence of certain inorganic elements in biomass causes issues such as slagging, fouling and corrosion when co-firing with coal for power generation. In this work, the efficacy of leaching to remove these elements from Jatropha curcas seed cake was investigated. Leaching of both untorrefied and torrefied seed cakes was carried out in Milli-Q water at temperatures of 20 0 C, 35 0 C and 50 0 C. At 20 0 C, the two critical elements, potassium and chlorine, decreased by as much as 85% and 97%, respectively. Leaching at higher temperatures was only beneficial for the more intensely-torrefied biomass, since they were more resistant to leaching. The electrical 24 conductivity and ion content of the leachates were measured, as were the inorganic elemental content, dry ash content, volatile matter content and higher heating value (HHV) of the solid seed cake. A secondary benefit of the leaching was an increase in the HHV by up to 10%.

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“…For the numerical simulation of the solid phase, the particle trajectory model is used. The trajectory of the particle simulation is based on the gas phase [13] . In this thesis, the same size particle trajectory with different wind speeds and the different size particle trajectory with same wind speeds are studied.…”

Section: Problems Of Deposit Corrosionmentioning

confidence: 99%

Recent Advances and Current Status of the Characteristic of Deposits on Heating Surfaces from Heating Biomass-fired Boiler

Zhao¹,

Tang²,

Zhu³

2017

dtmse

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Abstract. Biomass direct combustion for electricity is the most widely applied and developed biomass conversion and utilization technology, but due to the high content of alkali metals, it will cause deposition and high temperature corrosion of heating surfaces in boiler during biomass combustion, thus reduces the efficiency and influences the long-time safe operation of the boiler. Alkali metals problem especially deposition and high temperature corrosion is urgently need to be solved. A review of literature indicates ash deposition and high temperature corrosion of heating surfaces in biomass-fired boilers, combined engineering practice with experimental study, explored the mechanism of deposition build-up and high temperature.

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Influence of deposit formation on corrosion at a straw-fired boiler

Cited by 175 publications

References 11 publications

Ash Deposition in Biomass Combustion or Co-Firing for Power/Heat Generation

Ash Deposition in Biomass Combustion or Co-Firing for Power/Heat Generation

Leaching as a Pretreatment Process to Complement Torrefaction in Improving Co-firing Characteristics of Jatropha curcas Seed Cake

Recent Advances and Current Status of the Characteristic of Deposits on Heating Surfaces from Heating Biomass-fired Boiler

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