Development of new technology for coal gasification purification and research on the formation mechanism of pollutants

Zheng, Sining; Shi, Yixiang; Wang, Zhiqi; Wang, Pengjie; Liu, Gang; Zhou, Huaichun

doi:10.1007/s40789-021-00420-w

Cited by 20 publications

(7 citation statements)

References 35 publications

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“…In a related study, Zheng et al [55] studied the gasification reaction characteristics of ultrafine coal particles, the formation mechanism of pollutants, ash melting characteristics and their effects on coal gasification reactions. They developed an integrated gasification fuel cell (IGFC) power generation technology to solve the problems of declined efficiency and increased costs caused by CO 2 capture in coal-fired power systems.…”

Section: Advances In Coal Utilisation Technologies 111 Coal Gasificationmentioning

confidence: 99%

Energy and Chemicals Production from Coal‐based Technologies: A Review

et al. 2023

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Coal, a solid fossil fuel, consists of organic and inorganic matter. Its complex structure contains fused aromatic moieties, constituting a three‐dimensional macromolecular coal structure network. More efficient utilisation technologies are required to ensure coal becomes a considerably cleaner source of energy in the future. Due to the increase in energy, liquid fuels, and combustible gas demands, coal utilisation is necessary for some developing countries such as Pakistan, Turkey, and India. Furthermore, coal is globally being used to produce liquid fuels and combustible gases. The benefits and drawbacks of various Fischer‐Tropsch synthesis catalysts are discussed. For clean coal carbonisation, blends of coal and biomass, which are the current trends in decarbonising the coal industries, should be adopted and the chemistry of coal carbonisation should be investigated further, especially the phenomenon that occurs at the plastic layer (300–550 °C). In addition, the clean co‐gasification technology presented in this work could be adopted and successfully implemented through government and industry initiatives to study and test coal/biomass for co‐gasification and advanced modelling and simulation of the co‐gasification plant.

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Section: Advances In Coal Utilisation Technologies 111 Coal Gasificationmentioning

confidence: 99%

Energy and Chemicals Production from Coal‐based Technologies: A Review

et al. 2023

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“…The core of the Polanyi potential theory is the adsorption characteristic curve indicating the relationship between the adsorption phase volume and the adsorption potential. Among them, the adsorption phase volume (V ads ) is given as follows 24 = V Mn /1000 ads abs ads (14) where n abs is the absolute adsorption amount calculated by eq (15), and ρ ads is the adsorption phase density. Up till now, the state of aggregation of adsorbed CH 4 molecules on porous media is still a pending issue.…”

Section: Characteristic Curve For Ch 4 Adsorption On Shalementioning

confidence: 99%

“…Combining eq (14) and Figure 11a, the adsorption characteristic curves are plotted in Figure 11b. The adsorption characteristic curves for the CH 4 −shale system corresponding to the five operating temperatures coincide well with each other.…”

Section: Characteristic Curve For Ch 4 Adsorption On Shalementioning

confidence: 99%

“…Volumetric and gravimetric methods have long been employed for measuring CH 4 adsorption data of various shale samples under simulative reservoir conditions. − In accordance with the experimental CH 4 adsorption isotherms, adsorption equilibrium models are always adopted to provide key parameters of physical adsorption of CH 4 on the shale matrix such as the saturation capacity and isosteric adsorption heat. The microcosmic mechanism accounting for a specific physical adsorption system mainly comprises surface coverage and micropore filling. − Accordingly, many types of adsorption equilibrium models, for instance, the Langmuir model, the Sips model, the Brunauer–Emmett–Teller (BET) model, the Guggenheim–Anderson-de Boer (GAB) model, the Frenkel–Halsely–Hill (FHH) model, and the Ono–Kondo lattice model conform to the former mechanism. Instead, the Dubinin–Radushkevich (D–R) model, the Dubinin–Astakhov (D–A) model, and the Dubinin–Serpinsky (D–S) model follow the latter mechanism .…”

Section: Introductionmentioning

confidence: 99%

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Methane Adsorption and Desorption on a Deep Shale Matrix under Simulative Reservoir Temperature and Pressure

Cai

Zhang

2022

Energy Fuels

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Further insight into the adsorption and desorption behaviors of methane (CH 4 ) on a shale matrix is critical to shale gas exploration and production. As for the Lower Silurian Longmaxi Formation shale in the Jiaoshiba block, the Sichuan Basin of China, shale gas reserves always occur in reservoirs with burial depths above 3800−4000 m. Thus, the CH 4 adsorption and desorption capability on a deep shale matrix was measured under simulative reservoir temperatures of up to 353.15 K and pressures up to 30.00 MPa. Furthermore, the adsorption mechanism of the CH 4 −shale system was quantitatively elaborated. Finally, the Polanyi potential theory approach was adopted to further clarify CH 4 adsorption and desorption on a deep shale matrix. Results indicated that increasing temperature decreases the CH 4 adsorption capacity of a deep shale matrix. Particularly, its decreasing amplitude reaches up to 20.23% with the temperature increasing from 313.15 to 353.15 K. The adsorption and desorption hystereses of CH 4 on a deep shale matrix were found for all of the operating temperatures. Particularly, the increase in temperature weakens the degree of hysteresis, implying that technologies based on temperature increase could be the future direction of research and development on shale gas production. The weakening temperature dependence of hysteresis is because of the additional energy supplied for desorption and weakened shale matrix swelling due to the high operating temperature. Quantitative analyses indicated that CH 4 adsorption on a deep shale matrix under simulative reservoir temperature and pressure typically follows the micropore-filling mechanism. Accordingly, the Polanyi potential theory is applicable to address the CH 4 −shale adsorption and desorption systems. Moreover, the characteristic curves of both adsorption and desorption of CH 4 on a deep shale matrix show good coincidence for all of the operating temperatures. Thus, the characteristic curve is an effective tool to predict the adsorption and desorption isotherms of CH 4 on a shale matrix at a given temperature and pressure.

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“…From the perspective of IGFC and IGFC technologies in China (Peng et al 2021), the development of new technology for coal gasification purification and research on the formation mechanism of pollutants are presented (Zheng et al 2021). Meanwhile, the effect of alkali metal ions on the formation mechanism of HCN during pyridine pyrolysis is researched (Liu et al 2021).…”

mentioning

confidence: 99%

Special issue on integrated gasification fuel cell (IGFC) technology

Peng

2021

Int J Coal Sci Technol

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Development of new technology for coal gasification purification and research on the formation mechanism of pollutants

Cited by 20 publications

References 35 publications

Energy and Chemicals Production from Coal‐based Technologies: A Review

Energy and Chemicals Production from Coal‐based Technologies: A Review

Methane Adsorption and Desorption on a Deep Shale Matrix under Simulative Reservoir Temperature and Pressure

Special issue on integrated gasification fuel cell (IGFC) technology

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