Gasification and the Future

Higman, Christopher; Burgt, M. van der

doi:10.1016/b978-0-7506-8528-3.00010-9

Cited by 146 publications

(282 citation statements)

References 2 publications

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“…The principal chemical reactions governing the coal gasification process are those involving carbon (C), carbon monoxide (CO), carbon dioxide (CO 2 ), hydrogen (H 2 ), steam water (H 2 O), and methane (CH 4 ). [1,3,4] These reactions are listed in Table 2, in which the numerical values, cited from references, are also presented. More comments are given in the Results and Discussion section.…”

Section: Coal Gasificationmentioning

confidence: 99%

“…G asification is a technology that thermally converts coal and waste feed stocks, including refinery residues, petroleum coke, biomass, and municipal and other solid carbonaceous materials to a gaseous product with a useable heating value. [1][2][3][4] Recently, 420 gasifiers were in operation worldwide, of which 55 % used coal as feed and 32 % used petroleum residue. There were 212 operating coal gasifiers with a gasification capacity of 30 825 MW of syngas.…”

Section: Introductionmentioning

confidence: 99%

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Coal pyrolysis and gasification in a fluidized bed thermogravimetric analyzer

Samih

Chaouki

2018

Can J Chem Eng

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The kinetics and modelling of coal gasification were studied in the newly developed fluidized bed thermogravimetric analyzer. The total weight loss obtained from the fluidized bed reactor and the total gas product are in general agreement. The presented model for the micro‐fluidized bed reactor encompasses the kinetics of coal pyrolysis as well as the gasification reactions. For coal pyrolysis, the resulting activation energies for the individual gases were 34.7 to 59.8 kcal/mol. These values are 19 to 21 % lower than those found in the literature for similar coals. This decrease of the activation energies of the endothermic pyrolysis reactions is attributed to a gradient of temperature of 185 to 209 °C. The obtained activation energy for the CO shift reaction is 46.6 kcal/mol, increasing by 20 % from the one used in the literature. This increase of the activation energy of such a mildly exothermic reaction represents an equivalent of 170 °C gradient of temperature. The effects of temperature on the yield and the composition of the gas product are studied. Experimental results and equilibrium data are also compared. The model shows reasonably good agreement with the experimental results, except for the water gas shift reaction.

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Section: Coal Gasificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Coal pyrolysis and gasification in a fluidized bed thermogravimetric analyzer

Samih

Chaouki

2018

Can J Chem Eng

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“…There are numerous solid and liquid feedstocks that are commonly used to prepare an appropriate syngas for the methanol synthesis [8,67]. Among them are fossil products of natural coalification processes, including peat, lignite, bituminous coal through to anthracite -these are all typically gasified.…”

Section: Coal Biomass and Refinery Residuesmentioning

confidence: 99%

“…Through natural carbonization, the amount of fixed carbon increases, whereas volatile compounds, especially bound hydrogen and oxygen, are outgassed. As a result, the produced syngas is sub-stoichiometric [67]. Hence, in order to adjust SN to the correct level, H 2 can either be added or the carbon oxide content can be decreased by shifting CO and subsequently removing surplus CO 2 .…”

Section: Coal Biomass and Refinery Residuesmentioning

confidence: 99%

Methanol Synthesis – Industrial Challenges within a Changing Raw Material Landscape

Nestler

Krüger

Full

et al. 2018

Chemie Ingenieur Technik

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Worldwide production capacities of carbon‐based chemicals and associated products are steadily increasing. At the same time the reduction of greenhouse gas emissions such as carbon dioxide is of paramount importance in order to mitigate the anthropogenic impact of climate change. In Carbon2Chem® a cross industrial network develops concepts towards the utilization of steel mill gases for the sustainable production of “green” base chemicals, including methanol. This Review describes the technological challenges emerging from the use of these alternative feedstocks, specifically in the context of methanol production processes.

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“…[3,4] The yield of each of these groups is highly dependent on temperature and heating rate. [3,[5][6][7] Processes are often separated into flash pyrolysis (high or very high heating rate and temperature above 550 8C) and slow pyrolysis (heating rate of few tens of 8C/min at temperature lower than 500 8C).…”

Section: Introductionmentioning

confidence: 99%

Modelling of pyrolysis in a high capacity thermo balance

Marías¹,

Santacreu

2014

Can J Chem Eng

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International audienceThis paper deals with the two dimensional modelling of transient pyrolysis of biomass in a fixed bed. The model that is developed mainly relies on the theory of volume averaging. This model includes heat and mass transfer and pyrolysis reaction. It allows the prediction of temperature, moisture content organic material content, and char content, as well as the prediction of internal evolution of the composition of the gas held and released from the sample under investigation.This model is used in order to describe pine wood pyrolysis taking place in a macro thermobalance which is also presented in the paper. Comparison of the numerical results with the experimental ones, in terms of mass loss of the sample, shows good agreement and validates the model. A deeper analysis of the results allows a better understanding of the processes involved in the thermal degradation

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Gasification and the Future

Cited by 146 publications

References 2 publications

Coal pyrolysis and gasification in a fluidized bed thermogravimetric analyzer

Coal pyrolysis and gasification in a fluidized bed thermogravimetric analyzer

Methanol Synthesis – Industrial Challenges within a Changing Raw Material Landscape

Modelling of pyrolysis in a high capacity thermo balance

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