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... procedure may simply identify melting behaviour of ash. Figure 2 shows fusion points of ash according to ash fusibility analysis. The greatest importance for the process of slagging and fouling play two first characteristic temperatures: Initial Deformation On this basis, one can conclude that these biomasses are described by high potential of ash deposition tendency. ...
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... The tar yields obtained from this study was in the same range as other studies. In Valderrama Rios et al. (2018), the level of tar Gądek and Kalisz (2018) Gądek and Kalisz (2018) Gądek and Kalisz (2018) Gądek and Kalisz (2018) Wheat produced from air gasification of biomass varied between 0.00009 and 0.1324 kg Nm −3 , depending on the operating temperature. Air gasification of MSW or RDF produced between 0.0047 and 0.036 kg Nm −3 of tar (Etutu et al., 2016;Kardaś et al., 2018). ...
Coconut agro-industry in the western region of Thailand generates a large amount of residues. This study investigated the energy production potential of discarded coconut petioles, with a focus on co-gasification with refuse-derived fuel (RDF). Gasification tests involving petioles, RDFs and their mixtures (25%, 50%, 75% or 100% by weight) were conducted in a laboratory-scale fixed bed reactor. Fuel samples of 5 g were gasified at 700°C–900°C for 60 minutes, using simulated air (79% N 2 to 21% O 2 , by volume) as a gasifying agent. Gasification of petioles generated producer gas with lower heating values, estimated at 0.43–0.75 MJ Nm ⁻³ , while RDF produced 0.92–1.39 MJ Nm ⁻³ . Adding greater quantities of RDF to the fuel mixture resulted in an increase in the heating value of the producer gas and cold gas efficiency. The operating temperatures and gasifying-agent flow rates affected the efficiency of process differently, depending on the fuel composition. However, the maximum cold gas efficiency from both fuels was detected in tests conducted at 800°C. In co-gasification and pure refuse-derived-fuel tests, higher temperatures and gasifying-agent flow rates led to outputs with higher energy yields. Our findings suggested that co-gasification of petiole is a viable alternative waste-treatment technology for this region.
... List of independent variables used in regression equations and structural parameters which were assigned to them for IDT, HT, and FT models[7,[37][38][39]47,56]. ...
The prediction of phase transformation of biomass ashes is challenging due to the highly variable composition of these fuels as well as the complex processes accompanying phase transformations. The AFT (Ash Fusion Temperature) model was performed in Statistica 13.1 software. This model was divided into three separate submodels, which were designed to predict the characteristic ash melting temperatures for raw and modified biomass. It is based on the chemical composition of fuel and ash as obtained using ash analysis standards. For the discussed models, several coefficients describing multiple regression parameters are presented. The AFT model discussed in this article is suitable for predicting ash fusion temperatures for biomass and allows for the prediction of the temperature with an average error of <± 70.05 °C for IDT; <± 51.98 °C for HT; <± 47.52 °C for FT for raw biomass. For some of the additionally tested biomass, a value higher than the average difference between the measured temperature and the designated model was observed (<90 °C). Moreover, morphological analyses of the structure SEM-EDS for ash samples with and without additive were performed.
... 6,10 Despite being a renewable energy source, biomass is often considered as a carbon neutral fuel. 11 Recently, an assessment has been carried out with respect to exergy, economic and environmental sustainability for different conventional and nonconventional energy sources. It is learnt that the biomass power plant may prove to be the best system economically for electricity generation if subsidized adequately. ...
Integrating biomass energy generation with carbon capture will result in “carbon neutral” to “carbon negative” technology. Countries like India and China possess significant reserves of limestone. Calcium looping (CaL) technology can prove to be a promising option for carbon capture in these countries. The present work aims at improving the performance of CaL‐integrated biomass‐fired power plant (BFPP) by exploring different looping configurations. In this study, (i) standalone BFPP, (ii) conventional CaL (single stage), and (iii) double CaL‐integrated BFPP have been systematically evaluated. A comparative performance evaluation of these three plants in terms of energy, exergy and ecological assessment, has been carried out. A detailed parametric study and unit‐wise exergy analysis of the best configuration among the three are presented to identify the scope for further improvement in efficiency and energy savings. The assessment of sugarcane bagasse‐based energy generation with CO2 capture for India. Steady state simulation of double calcium looping‐integrated BFPP. Thermodynamic and ecological assessments of calcium looping‐integrated BFPP. Influence of carbonator temperature and organic fluid content on the performance of the system.
