Characterization of solid char produced from pyrolysis of the organic fraction of municipal solid waste, high volatile coal and their blends

Tokmurzin, Diyar; Kuspangaliyeva, Botagoz; Aimbetov, Berik; Abylkhani, Bexultan; Inglezakis, Vassilis J.; Anthony, Edward J.; Sarbassov, Yerbol

doi:10.1016/j.energy.2019.116562

Cited by 33 publications

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References 38 publications

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“…The overlapping degradation temperature interval between coal and plastic was assumed to be favorable for hydrogen transfer from plastic to coal. In addition, Tokmurzin et al characterized the pyrolysis of the organic fraction of municipal solid waste (org-MSW), high volatile coal (HVC), and their blends; the temperatures for the most rapid org-MSW and HVC decomposition were determined to be 306 and 459 °C, respectively. In the blended tests of org-MSW and HVC with a 50/50 weight ratio, two major decomposition were observed, at 297 and 454 °C, as seen in Figure .The results indicated that the addition of org-MSW would reduce the devolatilization temperature of the blends, which could have a promotion effect on char ignition.…”

Section: Co-combustion Fundamentals Of Osw and Coalmentioning

confidence: 99%

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Review on the Current Status of the Co-combustion Technology of Organic Solid Waste (OSW) and Coal in China

et al. 2020

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Increasing economy and population result in the rapid growth of solid waste in China, with more than 70% being carbonaceous components. The generated carbon-bearing solid waste is called as organic solid waste (OSW). In this Review, OSWs from both municipal and industrial sources are discussed and divided into municipal solid waste (MSW), organic sludge, polymer solid waste, and biomass-like solid waste, according to their variations in origins and characteristics in China. Agricultural waste (i.e., biomass) and large-scale industrial solid waste (e.g., coal waste) are not considered, because of their well-established fundamentals. Incineration is becoming the most common method of energy recovery for OSW in China, while it has to face the problems of relatively low thermal efficiency, high air pollutant emission, and the high risk of fly ash products. Compared with MSW incinerators, coal-fired power plants own efficient power generation systems and centralized air pollution control devices (APCDs). With the fact that mixed coals are widely used in existing power plants, it is of great significance to study and discuss the current status of cocombustion of OSW and coal in China. In this work, the physicochemical properties of OSW were first introduced, with a subsequent detailed summary on their co-combustion fundamentals, such as devolatilization, ignition, char reactivity, and combustion efficiency, and ash-related issues, including fouling/slagging, high-temperature corrosion, and leaching behavior of ash residue. Furthermore, pollutants emissions regarding conventional pollutant [CO, SO 2 , NO x , HCl, particulate matters (PM)], heavy metals, and hazardous organic pollutants such as polycyclic aromatic hydrocarbons (PAHs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were analyzed. Some pretreatment methods to reduce the risk of co-combustion were also discussed, including pelletization, drying, torrefaction, hydrothermal carbonization, and low-temperature pyrolysis. Lastly, discussions and perspectives on the future co-combustion technology of OSW with coal were presented. This work aimed to gain systematic knowledge on the co-combustion technology of OSW and coal, providing guidelines for further applications of OSW in power plants in China, as well as other countries in the world.

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Section: Co-combustion Fundamentals Of Osw and Coalmentioning

confidence: 99%

“…Thermogravimetry (TG) and differential thermogravimetry (DTG) curves of high volatile coal (HVC), the organic fraction of municipal solid waste (org-MSW), and their blends. [Adapted from ref . Copyright 2020, Elsevier.…”

Section: Co-combustion Fundamentals Of Osw and Coalmentioning

confidence: 99%

Review on the Current Status of the Co-combustion Technology of Organic Solid Waste (OSW) and Coal in China

et al. 2020

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“…Herein, we evaluate its potential, in terms of gas emissions, for the fluidized bed co-combustion with biomass. The parameters for the biomass, particularly taking the organic fraction of MSW of Nur-Sultan, Kazakhstan, were retrieved from our previous work (Tokmurzin et al 2020). The density of the particles was 1.8 g/cm 3 and 0.31 g/cm 3 , for Ekibastuz coal and organic fraction of MSW.…”

Section: Implementation On Ekibastuz Coal and Local Mswmentioning

confidence: 99%

Flue gas analysis for biomass and coal co-firing in fluidized bed: process simulation and validation

Zhakupov

Kulmukanova

Sarbassov

et al. 2022

Int J Coal Sci Technol

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Coal-conversion technologies, although used ubiquitously, are often discredited due to high pollutant emissions, thereby emphasizing a dire need to optimize the combustion process. The co-firing of coal/biomass in a fluidized bed reactor has been an efficient way to optimize the pollutants emission. Herein, a new model has been designed in Aspen Plus® to simultaneously include detailed reaction kinetics, volatile compositions, tar combustion, and hydrodynamics of the reactor. Validation of the process model was done with variations in the fuel including high-sulfur Spanish lignite, high-ash Ekibastuz coal, wood pellets, and locally collected municipal solid waste (MSW) and the temperature ranging from 1073 to 1223 K. The composition of the exhaust gases, namely, CO/CO2/NO/SO2 were determined from the model to be within 2% of the experimental observations. Co-combustion of local MSW with Ekibastuz coal had flue gas composition ranging from 1000 to 5000 ppm of CO, 16.2%–17.2% of CO2, 200–550 ppm of NO, and 130–210 ppm of SO2. A sensitivity analysis on co-firing of local biomass and Ekibastuz coal demonstrated the optimal operating temperature for fluidized bed reactor at 1148 K with the recommended biomass-to-coal ratio is 1/4, leading to minimum emissions of CO, NO, and SO2.

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“…Figure 4 shows the X-ray diffraction patterns of the selected catalyst samples and the carbon-based support. e samples of catalysts obtained with tartaric acid, sulfuric acid, and potassium hydroxide showed diffraction patterns with two wide peaks at ∼23 and ∼43 2θ °that corresponded to the graphitic structure of carbon-based materials [59,60]. In particular, the CA catalyst sample presented the characteristic diffraction peaks of CaCO 3 according to the PDF-2 database (ICDD: 01-081-2027).…”

Section: Analysis Of Preparation Conditions Of Heterogeneous Catalyst...mentioning

confidence: 99%

Preparation and Characterization of Alkaline and Acidic Heterogeneous Carbon-Based Catalysts and Their Application in Vegetable Oil Transesterification to Obtain Biodiesel

Díaz-Muñoz

Reynel-Ávila

Mendoza-Castillo

et al. 2022

International Journal of Chemical Engineering

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This paper reports the preparation, evaluation, and comparison of alkaline and acidic heterogeneous carbon-based catalysts in the transesterification of safflower oil with methanol to obtain biodiesel. These catalysts were obtained from the pyrolysis of flamboyant pods and their functionalization and activation with potassium hydroxide, citric acid, tartaric acid, sulfuric acid, and calcium nitrate. Different routes for the preparation of these catalysts were tested and analyzed where the FAME formation was the target variable to be improved. Results showed that the catalyst prepared with potassium hydroxide and calcium nitrate achieved the highest FAME formation (i.e., 95%) and outperformed the catalysts prepared with calcium nitrate and other acids even after four regeneration-reaction cycles. The best properties of an alkaline catalyst could be associated with its specific surface area and contents of potassium and calcium moieties, which were higher than those observed for acidic catalysts. Transesterification rates for biodiesel production were better estimated with the pseudo-order kinetic model, which ranged from 0.0004 to 0.038 L/mol⋅min for alkaline and acidic catalysts.

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Characterization of solid char produced from pyrolysis of the organic fraction of municipal solid waste, high volatile coal and their blends

Cited by 33 publications

References 38 publications

Review on the Current Status of the Co-combustion Technology of Organic Solid Waste (OSW) and Coal in China

Review on the Current Status of the Co-combustion Technology of Organic Solid Waste (OSW) and Coal in China

Flue gas analysis for biomass and coal co-firing in fluidized bed: process simulation and validation

Preparation and Characterization of Alkaline and Acidic Heterogeneous Carbon-Based Catalysts and Their Application in Vegetable Oil Transesterification to Obtain Biodiesel

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