Hydrogen production of solar-driven steam gasification of sewage sludge in an indirectly irradiated fluidized-bed reactor

Lipiński, Wojciech; Shen, Ye; Wei, Liping; He, Chao; Lapkin, Alexei; Dai, Yanjun; Wang, Chi-Hwa

doi:10.1016/j.apenergy.2019.114229

Cited by 32 publications

(8 citation statements)

References 43 publications

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“…In this case, the invalid data are removed by limiting the values of properties to a reasonable range, i.e., particle diameter in the range of 10 μm to 15 mm, U mf in the range of 0–5 m/s, and particle sphericity in the range of 0.2–1. Besides, some semiempirical correlations stored in the tables may also be incorrectly extracted as the values . These data are also removed by applying some predefined regular rules.…”

Section: Methodsmentioning

confidence: 99%

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Data-Driven Prediction of Minimum Fluidization Velocity in Gas-Fluidized Beds Using Data Extracted by Text Mining

Zhou

Liu

et al. 2021

Ind. Eng. Chem. Res.

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Minimum fluidization velocity (U mf ) is of fundamental importance in gas fluidization. Lots of empirical correlations have so far been reported in the literature to calculate U mf . However, U mf is affected by numerous factors, including, among others, the operation conditions and physical properties of both solids and gases. The applicability of empirical correlations relies essentially on the experiments upon which they were developed, and in practice, the choice of U mf is a matter of the knowledge and experience of chemical engineers. In this work, we proposed to establish a database by extracting experimental data of U mf from open literature using the text mining technique. We first presented a pipeline of natural language processing to identify and extract the functional parameters related to U mf with 83% accuracy from ∼40 000 papers. A database of U mf containing eight impacting factors, i.e., particle diameter, particle density, particle sphericity, bed voidage at minimum fluidization, gas density, gas viscosity, operating temperature, and pressure, was created. We then used a data-driven machine learning method with the extracting data to predict U mf , which is shown superior over the empirical correlations by achieving higher accuracy for a much wider range of gas−solid systems. We expect this work illustrates a potential and promising approach to make use of the huge amount of experimental data in the literature and replace the empirical correlations in practical chemical engineering design and operations.

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Section: Methodsmentioning

confidence: 99%

“…Besides, some semiempirical correlations stored in the tables may also be incorrectly extracted as the values. 38 These data are also removed by applying some predefined regular rules.…”

Section: Methodsmentioning

confidence: 99%

Data-Driven Prediction of Minimum Fluidization Velocity in Gas-Fluidized Beds Using Data Extracted by Text Mining

Zhou

Liu

et al. 2021

Ind. Eng. Chem. Res.

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“…Hydrogen is produced by sewage sludge gasification using a solar fluidized-bed gasifier. The solar gasifier is mainly comprised of a fluidized bed and a concentrically tubular cavity . The transient simulation of the solar gasifier is performed with ∼2.2 MW solar power input.…”

Section: Thermal Hydrogen Production Processmentioning

confidence: 99%

“…The solar gasifier is mainly comprised of a fluidized bed and a concentrically tubular cavity. 14 The transient simulation of the solar gasifier is performed with ∼2.2 MW solar power input. A H 2 yield range of 61.2−67.6 g/kg(sludge) can be achieved, which can be modified by adjusting the direct normal irradiance and the steam content of the gasifying agent.…”

Section: Thermal Hydrogen Production Processmentioning

confidence: 99%

Review on Solar Hydrogen: Its Prospects and Limitations

Dutta

2021

Energy Fuels

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Clean and green energy has become very much desirable in recent times to mitigate the environmental problem associated with fossil fuels. Hydrogen can be utilized as sustainable energy resources whenever it is produced via green routes. Hydrogen production using solar energy is a pollution-free route as the carbon footprint is zero or significantly less than other hydrogen-generation methods. This review elucidates various hydrogen-generation routes using solar energy as the primary energy resource. Both thermal and photoassisted routes are incorporated in this review. It is found that solar photovoltaic cell associated with water electrolyzer is very popular. Biomass can also be converted to hydrogen through thermal and photoassisted processes. The economic analysis confirmed that hydrogen-fueled cars are economical as well as environmentally friendly.

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“…Carbon conversions of nearly 80% were observed, and maximum cold gas ratios and chemical storage efficiencies were 1.16 and 22.1%, respectively. Li et al (2020) reported on steam gasification of sewage sludge in an indirectly irradiated Type A FB solar gasifier with a co-axial tubular configuration. Kinetic data for sewage sludge pyrolysis were obtained in lab-scale FB reactor and used in gasifier models (dynamic two-phase and pseudo one-dimensional), validated against experimental data.…”

Section: Solar-driven Gasificationmentioning

confidence: 99%

Fluidized Beds for Concentrated Solar Thermal Technologies—A Review

et al. 2021

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Thermal and thermochemical processes can be efficiently developed and carried out in fluidized beds, due to the unique properties of fluidized suspensions of solid particles and to the inherent flexibility of fluidized bed design and operation. Coupling fluidization with concentrated solar power is a stimulating cross-disciplinary field of investigation, with the related issues and opportunities to explore. In this review article the current and perspective applications of fluidized beds to collection, storage and exploitation of solar radiation are surveyed. Novel and “creative” designs of fluidized bed solar receivers/reactors are reported and critically discussed. The vast field of applications of solar-driven fluidized bed processes, from energy conversion with thermal energy storage, to solids looping for thermochemical energy storage, production of fuels, chemicals and materials, is explored with an eye at past and current developments and an outlook of future perspectives.

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Hydrogen production of solar-driven steam gasification of sewage sludge in an indirectly irradiated fluidized-bed reactor

Cited by 32 publications

References 43 publications

Data-Driven Prediction of Minimum Fluidization Velocity in Gas-Fluidized Beds Using Data Extracted by Text Mining

Data-Driven Prediction of Minimum Fluidization Velocity in Gas-Fluidized Beds Using Data Extracted by Text Mining

Review on Solar Hydrogen: Its Prospects and Limitations

Fluidized Beds for Concentrated Solar Thermal Technologies—A Review

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