Thermovolumetric investigations of steam gasification of coals and their chars

Porada, Stanisław; Czerski, Grzegorz; Grzywacz, Przemysław; Dziok, Tadeusz; Makowska, Dorota

doi:10.1051/e3sconf/20171402005

Cited by 6 publications

(7 citation statements)

References 18 publications

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“…Description of the laboratory equipment on which the measurements were carried out has been presented in previous publications [20,21], and its schematic diagram is shown in Figure 1. Fig.…”

Section: Methodology Of Measurementsmentioning

confidence: 99%

“…The laboratory equipment for kinetic examinations of coal gasification process. 1 -reactor, 2 -thermocouple, 3 -water tank, 4 -water pump, 5 -steam generator, 6 -mass flowmeter, 7-pressure gauge, 8 -coal feeder, 9 -cooler, 10 -filter, 11 -pressure regulator, 12-rotameter, 13 -gas chromatograph, 14 -CO, CO2 IR analyser [20,21].…”

Section: Methodology Of Measurementsmentioning

confidence: 99%

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The influence of catalytic additives on kinetics of coal gasification process

2017

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Abstract. Catalytic coal gasification is a process that has the potential to become one of the efficient industrial technology of energy production. For this reason, the subject of this study was to analyze the kinetics of catalytic gasification of 'Janina' coal with steam. Isothermal measurements were performed at 800 °C, 900 °C, 950 °C and 1000 °C at a pressure of 1 MPa using cations of sodium, potassium and calcium as catalysts. During examination the thermovolumetric method was used. This method allows to determine the formation rates of a gaseous product such as carbon monoxide, hydrogen, methane and carbon dioxide as well as their contribution to the resulting gas. Moreover, the influence of catalysts on the kinetics of CO and H2 formation at various temperatures was determined and the kinetics parameters were calculated with the use of isoconversional model, Random Pore Model and Grain Model. The obtained results confirmed the positive effect of catalysts on the coal gasification process. The catalytic measurements were characterized by higher reaction rate and shorter duration of the process, and the calculated values of the kinetic parameters were lower than for the gasification process without the addition of catalysts.

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Section: Methodology Of Measurementsmentioning

confidence: 99%

Section: Methodology Of Measurementsmentioning

confidence: 99%

The influence of catalytic additives on kinetics of coal gasification process

2017

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“…Measurement of the kinetics gasification process was carried out under isothermal conditions, using the installation which schematic diagram is shown in Figure 1. Installation and methodology used in this research has been successfully applied to examine coal and chars gasification process [24,25]. The installation consists of several basic systems: a pressure reactor with a heating system (1-2) a system for feeding the reactor with the gasifying agent -steam (3-5), carrier gasargon (6-7), and biomass, (8) system for collecting and purifying the resulting gas (9-11) and the gas analysis system (12)(13)(14).…”

Section: Methodsmentioning

confidence: 99%

Kinetics examination of pressurised steam gasification of beech wood

et al. 2016

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Abstract. In Poland, among all renewable energy sources, share of biomass in electricity production is the largest. Great potential in biomass utilization involves use of gasification technology. The course of biomass gasification process in steam atmosphere is the subject of numerous scientific studies. The aim of this study was kinetics examination of pressurized beech wood waste gasification, that can be successfully used in industrial gasification. Measurements were carried out on a unique laboratory installation, that allows kinetics examination of solid fuels gasification with steam at wide range of pressures, via using thermovolumetric method. Formation rates of main gaseous products were determined, moreover, composition of post-reaction gas, as well as biomass conversion degree depending on the temperature were specified. Kinetic parameters of gasification were calculated and series of kinetic models were used to their designation ie Isoconvesional method, Integrated Core Model (ICM), Grain Model (GM) and Random Pore Model (RPM).

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“…This method was previously used to study the gasification of coal samples. The description of the apparatus was described in papers [30][31][32].…”

Section: Thermal Behaviour Of Pistachio Shells Investigated Using a Thermal Analysismentioning

confidence: 99%

The Utilisation of Solid Fuels Derived from Waste Pistachio Shells in Direct Carbon Solid Oxide Fuel Cells

et al. 2021

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The comprehensive results regarding the physicochemical properties of carbonaceous materials that are obtained from pistachio shells support their usage as solid fuels to supply direct carbon solid oxide fuel cells (DC-SOFCs). The influence of preparation conditions on variations in the chemical composition, morphology of the biochar powders, and degree of graphitization of carbonaceous materials were investigated. Based on structural investigations (X-ray diffraction analysis and Raman spectroscopy), it was observed that disordered carbon particles developed during the application of thermal treatments. The use of X-ray fluorescence enabled a comparative analysis of the chemical composition of the inorganic matter in biocarbon-based samples. Additionally, the gasification of carbonaceous-based samples vs. time at a temperature of 850 °C was investigated in a H2O or CO2 gas atmosphere. The analysis demonstrated the conversion rate of biochar obtained from pistachio shells to H2, CH4 and CO during steam gasification. The electrochemical investigations of the DC-SOFCs that were supplied with biochars obtained from pistachio shells were characterized by satisfactory values for the current and power densities at a temperature range of 700–850 °C. However, a higher power output of the DC-SOFCs was observed when CO2 was introduced to the anode chamber. Therefore, the impact of the Boudouard reaction on the performance of DC-SOFCs was confirmed. The chars that were prepared from pistachio shells were adequate for solid fuels for utilization in DC–SOFCs.

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Thermovolumetric investigations of steam gasification of coals and their chars

Cited by 6 publications

References 18 publications

The influence of catalytic additives on kinetics of coal gasification process

The influence of catalytic additives on kinetics of coal gasification process

Kinetics examination of pressurised steam gasification of beech wood

The Utilisation of Solid Fuels Derived from Waste Pistachio Shells in Direct Carbon Solid Oxide Fuel Cells

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