Impacts of acidic gas components on combustion of contaminated biomass fuels

Galanopoulos, Christos; Yan, Jerry; Li, Hailong; Liu, Longcheng

doi:10.1016/j.biombioe.2017.04.003

Cited by 10 publications

(4 citation statements)

References 42 publications

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“…In current study, a typical biomass‐based CHP plant with the thermal capacity of 170 MW is taken as a reference. Figure 1 shows the schematic diagram of the flue gas cleaning process 19 . The NOx is removed when the FG passes through the primary de‐NOx and the secondary de‐NOx based on the selective noncatalytic reduction (SNCR).…”

Section: System Description and Methodologymentioning

confidence: 99%

Potential environmental benefits of integrating flue gas quench in biomass/waste‐fueled CHP plants

Wang

Naqvi

et al. 2020

Energy Science & Engineering

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Due to stricter regulations, large biomass/waste incineration power plants are expected to reduce (i) pollutant emissions through water (such as organic compounds dissolved in the discharge water), (ii) the withdrawal of external freshwater, and (iii) the disturbance to the natural water by increasing the water recycle and internal reuse. To address such challenges, flue gas quench (FGQ) is playing a vital role that links flue gas (FG) cleaning and wastewater treatment. In this study, a detailed analysis based on the material and energy balance is performed regarding the pollutant distribution in the flue gas and the wastewater within a combined heat and power (CHP) plant. The real data from the reference CHP plant were used; and results show that the utilization of FGQ can result in less wastewater discharge (about 73 tonnes/d) together with less pollutant concentration to the municipal wastewater treatment plant, as compared to the system with only flue gas condenser but without FGQ. The integration of FGQ also results in less burden on the external freshwater use by increasing the amount of clean water for internal use (about 57 tonnes per day). In addition, the integration of FGQ can offer a potential annual energy saving of about 13.1 MWh in the municipal wastewater treatment plant due to the less wastewater coming from the CHP plant.

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Section: System Description and Methodologymentioning

confidence: 99%

Potential environmental benefits of integrating flue gas quench in biomass/waste‐fueled CHP plants

Wang

Naqvi

et al. 2020

Energy Science & Engineering

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“…Fig. 1 shows the typical schematic diagram of flue gas cleaning process [5]. Although most of contaminants have been removed after BHF, the condensate from FGC still contains high levels of pollutions, and requires treatment, resulting in additional energy consumption [6,7].…”

Section: Mass Balances Of Pollutants In Flue Gas and Process Watermentioning

confidence: 99%

“…where ∆m FGQ,i is the amount of contaminants captured by water from flue gas (mg); C FG,i is contaminant concentrations in the flue gas; m FG,j represents the mass flow rate of flue gas in different steams; and λ i is the coefficient of removing pollutant from flue gas by the water.In the calculation, it has been assumed that 90% of the NH 3 and SO 2 and 80% of the HCl can be removed from FG by water [5]. The contents of these contaminants in external water and flue gas (1/6) are listed in Table 1 and Table 2 [10].…”

Section: Mass Balances Of Pollutants In Flue Gas and Process Watermentioning

confidence: 99%

Potential Environmental Benefits of Flue Gas Quench Integration With Existing Biomass/Waste-Fuelled CHP Plant

Jinshan¹,

Wang²,

Naqvi³

et al. 2020

Preprint

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“…Biomass is stored at ambient temperature, but its long-term accumulation increases the risk of spontaneous combustion to take place . This process is triggered by a series of internal and external factors, such as the oxygen concentration, the co-flow velocity, and the flue gas flow, and it can be avoided by carefully controlling them. − In this work, the spontaneous combustion process of a pine biomass was simulated in different environments by controlling the ventilation rate of the ambient, the particle size, and the water content of the compound.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Investigation on the Spontaneous Combustion of a Lignocellulosic Biomass and Its Suppression by Chemical Inhibitors

Tang

Jinqiang

2020

Energy Fuels

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To understand the risk factors of spontaneous combustion fire during the storage process of a biomass pile, the effects of various factors on its self-ignition process under adiabatic oxidation conditions were investigated. Thermogravimetry, differential scanning calorimetry, and Fourier transform infrared spectroscopy (FTIR) were used to analyze the behavior of a series of biomass samples before and after the inhibition. A total of 12 typical inorganic salts and antioxidants were used as chemical inhibitors for suppressing the spontaneous combustion of the lignocellulosic biomass. A steady increase in the heating rate of the compound can be observed with a decrease in the particle size from 4.00 to 0.18 mm. Samples with a moisture content of 1% are most susceptible to spontaneous combustion. Interestingly, the effect of the ventilation rate on the self-heating properties of the samples increases when the temperature is higher than 70 °C. In the 40–350 °C range, CaCl2, citric acid, MgCl2, and Na3PO4 reduce the heat release by 123.32–492.15 J/g. Among these compounds, CaCl2 exhibits the optimal inhibition effect. According to the FTIR results, the inhibitors mainly target the −OH, C–O, C–H, and CO groups. Moreover, the weakening of these active sites by slowing their oxidation rate is the main responsible for retarding the spontaneous combustion of the biomass. This work contributes in the development of novel strategies to shed some light on the spontaneous combustion of biomasses.

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Impacts of acidic gas components on combustion of contaminated biomass fuels

Cited by 10 publications

References 42 publications

Potential environmental benefits of integrating flue gas quench in biomass/waste‐fueled CHP plants

Potential environmental benefits of integrating flue gas quench in biomass/waste‐fueled CHP plants

Potential Environmental Benefits of Flue Gas Quench Integration With Existing Biomass/Waste-Fuelled CHP Plant

Laboratory Investigation on the Spontaneous Combustion of a Lignocellulosic Biomass and Its Suppression by Chemical Inhibitors

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