Co-firing of pressed sugar beet pulp with coal in a laboratory-scale fluidised bed combustor

Akram, Muhammad; Tan, Chee-Keong; Garwood, D. R.; Fisher, M.; Gent, D. R.; Kaye, W. G.

doi:10.1016/j.apenergy.2014.11.008

Cited by 21 publications

(9 citation statements)

References 32 publications

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“…The co-combustion of coal with biomass (Akram et al 2015;Kumar and Singh 2016;Luo and Zhou 2017) and sludge (Areeprasert et al 2016;Kumar and Singh 2017) have been widely studied and the results verify the feasibility of co-combustion. Due to the demand of MSW disposal, the co-combustion of coal and MSW has also attracted more attention in recent years.…”

Section: Introductionmentioning

confidence: 93%

Co-combustion of municipal solid waste and coal gangue in a circulating fluidized bed combustor

Qin

Zhao

Chen

et al. 2018

Int J Coal Sci Technol

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Mixed incineration of municipal solid waste (MSW) in existing coal gangue power plant is a potentially highefficiency and low-cost MSW disposal way. In this paper, the co-combustion and pollutants emission characteristic of MSW and coal gangue was investigated in a circulating fluidized bed (CFB) combustor. The effect of MSW blend ratio, bed temperature and excess air ratio was detailedly studied. The results show the NO x and HCl emission increases with the increasing MSW blend ratio and the SO 2 emission decreases. With the increase of bed temperature, the CO emission decreases while the NO x and SO 2 emission increases. The HCl emission is nearly stable in the temperature range of 850-950°C. The increase of excess air ratio gradually increases the NO x emission but has no significant effect on the SO 2 emission. The HCl emission firstly increases and then decreases with the increase of excess air ratio. For a typical CFB operating condition with excess air ratio of 1.4, bed temperature of 900°C and MSW blend ratio of 10%, the original CO, NO x , SO 2 and HCl emissions are 52, 181, 3373 and 58 mg/N m 3 respectively.

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Section: Introductionmentioning

confidence: 93%

Co-combustion of municipal solid waste and coal gangue in a circulating fluidized bed combustor

Qin

Zhao

Chen

et al. 2018

Int J Coal Sci Technol

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“…The co-combustion of coal and residual biomass has been found to decrease agglomeration and corrosion risks compared to firing biomass alone [25][26][27]. The effectiveness of co-firing in preventing deposition of alkali chlorides is due to sulphur in coal since SO 2 and SO 3 react with alkali chlorides, yielding alkali sulphates (R.1, R.2):…”

Section: Introductionmentioning

confidence: 99%

The role of limestone during fluidized bed oxy-combustion of coal and biomass

et al. 2016

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The interest in bio-CCS technologies is growing due to their potential to reduce CO 2 emission in power generation. Oxy-co-firing in fluidized-bed units is one of the available techniques to develop bio-CCS, offering wide fuel flexibility and low SO 2 and NO x emissions. This paper discusses the results of an experimental campaign carried out in a lab-scale fluidized bed reactor. The work focuses on the influence of limestone when oxy-firing blends of lignite and corn stover. Two different types of limestone with two Ca:S molar ratios were tested, and operational conditions were selected to compare the mechanisms governing desulphurization. Emissions of SO 2 , NO and HCl, together with deposition rates and ash mineralogy are studied in the paper. SO 2 capture increases with the Ca:S ratio and bed temperature, but to a different extent depending on the limestone fragmentation. The amount of NO emitted rises with the Ca:S ratio and the presence of calcined limestone (indirect desulphurization). The HCl concentration in the gas phase is dominated by alkali sulfation. Finally, the conditions for the highest desulphurization efficiency diminished the deposition rates, but increased the risk for chlorine-induced corrosion.

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“…Torrefaction is the optimal process for the production of high quality solid fuel from beet pulp [15]. The heating value increased 1.4 times for biomass treated at 300 °C in 30 minutes, varying from 17.2 to 24.5 MJ/kg.…”

Section: Resultsmentioning

confidence: 99%

Low-waste production of pectin from beet pulp

et al. 2020

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The aim of the research work is to develop a method for processing beet pulp – a waste of sugar production. The study proposes a method for extracting pectin from beet pulp with a solution of weak citric acid. Characteristics of beet pulp such as total acidity, pH value, total sugar, carbon, nitrogen, volatile matter, hydrogen, fixed carbon, ash content have been determined. The pectin was extracted. To achieve the highest yield of pectin, the extraction conditions are optimized. The physical and chemical characteristics of the obtained pectin have been determined: the degree of esterification, color parameters, the methoxyl component, water activity, identification of pectin using infrared spectroscopy with Fourier transform. The torrefaction of pectin extraction waste to obtain biofuel was carried out. A feature of the proposed method is its low waste, since the waste of sugar production is used as a raw material, and weak and cheap citric acid is used as an extractant. The obtained pectin (the output of pectin was 21 ... 29%) can be used in the food industry (as a stabilizer, gelling agent, thickener).

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Co-firing of pressed sugar beet pulp with coal in a laboratory-scale fluidised bed combustor

Cited by 21 publications

References 32 publications

Co-combustion of municipal solid waste and coal gangue in a circulating fluidized bed combustor

Co-combustion of municipal solid waste and coal gangue in a circulating fluidized bed combustor

The role of limestone during fluidized bed oxy-combustion of coal and biomass

Low-waste production of pectin from beet pulp

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