Evaluation of the energy efficiency of the shell coal gasification process by coal type

Ju, Youngsan; Lee, Chang Ha

doi:10.1016/j.enconman.2017.03.082

Cited by 62 publications

(12 citation statements)

References 33 publications

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“…The figures present cold gas efficiency (CGE) values as well. This factor relates the inlet feedstock heating value with the outlet syngas heating value for explaining the thermal efficiency of the process [50]. To compare syngas compositions with reported data from literature sources, data were homogenised to a nitrogen-free basis, and the CO/CO2 figures were calculated.…”

Section: Resultsmentioning

confidence: 99%

Low-Cost Syngas Shifting for Remote Gasifiers: Combination of CO2 Adsorption and Catalyst Addition in a Novel and Simplified Packed Structure

et al. 2018

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This paper presents the technical validation of a novel, low-complexity alternative based on the inclusion of a patented (IEPI-MU-2016-185) packed bed for improving the performance of remote, small-scale gasification facilities. This study was carried out in an updraft, atmospheric-pressure gasifier, outfitted with a syngas reflux line, air and oxygen feed, and an upper packed-bed coupled to the gasification unit to improve the syngas quality by catalytic treatment and CO 2 adsorption. The experimental facility is located in the rural community San Pedro del Laurel, Ecuador. Gasification experiments, with and without packed material in the upper chamber, were performed to assess its effect on the syngas quality. The assessment revealed that the packed material increases the carbon monoxide (CO) content in the syngas outlet stream while carbon dioxide (CO 2 ) was reduced. This option appears to be a suitable and low-complexity alternative for enhancing the content of energy vectors of syngas in gasification at atmospheric pressure since CO/CO 2 ratios of 5.18 and 3.27 were achieved against reported values of 2.46 and 0.94 for operations which did not include the addition of packed material. It is concluded that the upper packed-bed is an active element able to modify syngas characteristics since CO 2 content was reduced.

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Section: Resultsmentioning

confidence: 99%

Low-Cost Syngas Shifting for Remote Gasifiers: Combination of CO2 Adsorption and Catalyst Addition in a Novel and Simplified Packed Structure

et al. 2018

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“…Hence, these two units are modeled and simulated for a detailed analysis. The models of other units have been established in the relevant literature. ,,,, The benchmark for this novel process is a practical CtEG process with a coal feed rate of 107.00 t/h in Tongliao, Inner Mongolia.…”

Section: Simulation Of the Wpcteg Processmentioning

confidence: 99%

Low-Carbon Path of Geographically Matched Hybrid Energy Utilization: A Coal-To-Ethylene Glycol Process with Hydrogen from the Coupled Wind/Solar Power

Shi

Wang

Yang

et al. 2021

ACS Sustainable Chem. Eng.

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The development of the polyester industry has created a growing demand for ethylene glycol (EG). Coal-to-EG (CtEG) is an important technical route for EG production in many countries, especially China. However, due to the mismatch of hydrogen-to-carbon ratio between raw coal and products, the process is endowed with high CO 2 emission intensity and wastage of carbon sources. Taking advantage of the geographical compatibility of wind/solar energy and coal-based processes in Northern China, we propose a new CtEG process with low-carbon hydrogen from the coupling of wind/solar power (WPCtEG). Based on the system modeling and simulation, the key operating parameters were studied and a dynamic hydrogen−carbon conversion framework was proposed to offset the influence of hydrogen fluctuation and reasonably configure the process system. Compared with traditional CtEG, the carbon efficiency and exergy efficiency of WPCtEG increased by 21.2 and 7.6%, respectively. The CO 2 emission intensity of this process reduced from 2.58 to 0.93 t/t-EG, whereas the production cost saves 31 $/t-EG. With the new sustainable energy and hybrid energy integration, this new process shows the development prospects of both low-carbon and high-yield efficiency.

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“…A calculation based on the inverse heat balance of the process is usually used to determine the COP of boilers, but this method of calculation is inconvenient, since it is very difficult to accurately determine all values of heat loss for different modes [31]. In industrial power engineering, it is customary to calculate the COP of gasification, COP of the gasifier, and COP of the energy complex [32,33].…”

Section: Combustion Explosion and Shock Wavesmentioning

confidence: 99%

Energy Efficiency of the Gasification of a Dense Layer of Solid Fuels in the Filter Combustion Mode

Кислов

Цветков

Zaichenko

et al. 2021

Russ. J. Phys. Chem. B

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The energy efficiency of the gasification of various solid fuels in the filtration combustion mode is evaluated. The modes of gasification of carbon and organic fuels with the moisture content of up to 70% and ash content of up to 90% are considered. The efficiency of air gasification of low-moisture carbon fuels does not exceed 70%; and of organic fuels, 85%. The efficiency of the air gasification of high-moisture fuels can reach 85-90%. The addition of steam to the gaseous oxidizer increases the efficiency of the process. The efficiency of steam-air the gasification of low-moisture low-ash carbon fuels reaches 85%. In the case of organic fuels, the maximum efficiency of steam-air gasification is observed for fuels with an ash content of 20 to 40%. For highly reactive fuels, the maximum efficiency is observed for ashless fuels. If the reactivity of the fuel is low, the highest gasification efficiency will be for high ash fuels.

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Evaluation of the energy efficiency of the shell coal gasification process by coal type

Cited by 62 publications

References 33 publications

Low-Cost Syngas Shifting for Remote Gasifiers: Combination of CO2 Adsorption and Catalyst Addition in a Novel and Simplified Packed Structure

Low-Cost Syngas Shifting for Remote Gasifiers: Combination of CO2 Adsorption and Catalyst Addition in a Novel and Simplified Packed Structure

Low-Carbon Path of Geographically Matched Hybrid Energy Utilization: A Coal-To-Ethylene Glycol Process with Hydrogen from the Coupled Wind/Solar Power

Energy Efficiency of the Gasification of a Dense Layer of Solid Fuels in the Filter Combustion Mode

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