Study on the dynamic characteristics of an integrated coal gasification fuel cell combined cycle

Obara, Shin’ya; Morel, Jorge; Okada, Masaki; Kobayashi, Kazuma

doi:10.1016/j.ijhydene.2015.09.009

Cited by 9 publications

(2 citation statements)

References 42 publications

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“…The coal gasification reaction was a thermal-chemical process in which the solid fuels were converted to combustible gases by partial oxidization with steam. The results were interpreted by the following reversible chemical reactions which occurred in the coal gasification reaction [5,[33][34][35].…”

Section: Gasification Mechanismmentioning

confidence: 99%

The steam gasification of coal with molten blast furnace slag as heat carrier and catalyst: Kinetic study

Duan

et al. 2016

International Journal of Hydrogen Energy

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In this study, we carried out a kinetic investigation to analyze the steam gasification of FS (Fu Shun) coal. The effect of reaction temperature (1573 K ~ 1673 K) was studied, and the coal/slag ratios were in the range of 1:0 ~ 1:2. The reaction temperature and coal/slag ratio affected the carbon conversion and reactivity index of FS coal gasification. With reaction temperature increasing, the time for carbon conversion completing decreased. But the effect of temperature was non-significant, when it was above 1623 K. The reactivity index of coal at 1673 K was about 1.6 times faster than that at 1573 K, when the coal/slag ratio was 1:0. The BFS (blast furnace slag) acted as not only a heat carrier but also an effective catalyst in steam gasification.Compared with the steam gasification of "pure" FS coal, both carbon conversion and reactivity index of gasification were enhanced by BFS. Meanwhile, the Diffusion model (D 1 model) and Shrinking core model (R 2 model) were proved as the most appropriate model to describe the steam gasification without and with BFS as heat carrier, respectively. The kinetic parameters applicable to the established model with different coal/slag ratios were obtained. Under these conditions, the valid range of activation energy for gasification reaction was 20 kJ•mol -1 ~ 64 kJ•mol -1 .

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Section: Gasification Mechanismmentioning

confidence: 99%

The steam gasification of coal with molten blast furnace slag as heat carrier and catalyst: Kinetic study

Duan

et al. 2016

International Journal of Hydrogen Energy

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“…Coal gasification is one of the most essential and efficient technologies for converting coal into fuel gas and varieties of chemical products, and it has a minimum adverse impact on the environment. [1][2][3][4][5] Different gasification technologies use different grades of coal, and the entrained flow gasification technology for coal-water slurry has been approved as an efficient process in coal gasification technologies. [6][7][8] Synthesis gas (syngas) is produced in the burning chamber of a coal-water slurry entrained flow gasifier and travels into the washing chamber (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

An experimental and numerical investigation of the three‐phase flow in the washing chamber of an entrained flow gasifier

Pan

Liu

et al. 2021

Can J Chem Eng

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This study established a cold experimental platform and a mathematical model to examine the gas-liquid-solid three-phase flow in the washing process of the gas-solid flow as it passes through a liquid pool in an entrained flow coal gasifier. It visualized the three-phase flow process and separation of the solid particles, including the bubble motion and particle separation processes. The concentration distribution and separation efficiency of the particles were quantitatively analyzed considering various major influencing factors. The particle separation mechanism was analyzed based on the characteristics of the threephase flow, and the results confirm that a multi-peak distribution of particle concentration exists in the liquid pool along the axial and radial directions.There is considerable variation in peak particle concentration points with different particle sizes; as particle size increases, the particle separation efficiency also rises. Based on the calculation conditions in this study, the separation efficiencies obtained with particle diameters of 50, 20, and 10 μm were 96.98%, 94.48%, and 87.31%, respectively.

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Carbon‐based nanocomposites in solid‐state hydrogen storage technology: An overview

et al. 2020

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Hydrogen fuel is becoming a hot topic among the scientific community as an alternative energy source. Hydrogen is eco-friendly, renewable, and green. The synthesis and development of materials with great potential for hydrogen storage is still a challenge in research and needs to be addressed to store hydrogen economically and efficiently. Various solid-state materials have been fabricated for hydrogen energy storage; however, carbon-based nanocomposites have gained more attention because of its high surface area, low processing cost, and light weight nature. Carbon materials are easy to modify with various metals, metal oxides (MOs), and other organometallic frameworks because of the functional groups available on the surface and edges that increase the storage capacity of hydrogen. In addition, chemisorption is another way to enhance the hydrogen storage capacity of carbonbased nanocomposites. In this review, we discuss the success achieved thus far and the challenges that remain for the physical and chemical storage of hydrogen in various carbon-based nanocomposites. Various compositions of catalysts (eg, metal, MOs, alloy, metal organic frameworks) and carbon materials are designed for hydrogen storage. Superior energy storage in hybrids and composites as compared with pristine materials (catalysts or carbon nanotubes) is governed by the interaction, activation, and hydrogen adsorption/ absorption mechanism of materials in the reaction profile. (Nano)composites comprising carbon material with metals, MOs, or alloys are important in this field, not only because of their potential for hydrogen sorption but also their significant cyclic stability and high efficiency upon successive adsorptiondesorption cycles.

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Study on the dynamic characteristics of an integrated coal gasification fuel cell combined cycle

Cited by 9 publications

References 42 publications

The steam gasification of coal with molten blast furnace slag as heat carrier and catalyst: Kinetic study

The steam gasification of coal with molten blast furnace slag as heat carrier and catalyst: Kinetic study

An experimental and numerical investigation of the three‐phase flow in the washing chamber of an entrained flow gasifier

Carbon‐based nanocomposites in solid‐state hydrogen storage technology: An overview

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