Superheated steam drying of sawdust in continuous feed spouted beds – A design perspective

Berghel, Jonas; Renström, Roger

doi:10.1016/j.biombioe.2014.10.004

Cited by 14 publications

(3 citation statements)

References 20 publications

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“…An interesting study analysed the efficiency of superheated steam to dry sawdust using two different conical SBRs [30]. Both reactors showed good results, even if the heat flux was not enough for obtaining a complete drying of products, due to the small volume of the chamber [31].…”

Section: Dryingmentioning

confidence: 99%

Review of Experimental Activities and Recent Developments of Spouted Bed Reactors at Different Operational Scales

Carozzo,

Arato,

Moliner

2024

Energies

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Recent research advances and technological developments of spouted bed reactors (SBRs) have been discussed in this work. SBR has aroused increasing interest since their invention in 1955 due to its flexibility in processing different feedstocks and the high process yields that can be achieved due to its characteristic fluid dynamics. However, even though highly satisfactory results have been obtained at the laboratory scale for different applications (i.e., drying or thermochemical reactions, among others), their full implementation at an industrial level is still scarce, mainly due to the challenges encountered for their scale-up. In this work, an initial short description of SBR and configurations is followed by a review of the main experimental activities that have been conducted at different scales in the period 2013–2023. Advanced solutions such as multi-unit reactors and the use of rectangular geometries instead of the classical cylindrical ones have arisen as potential areas for further study and development to achieve a reliable implementation of the spouted bed technology at an industrial scale.

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Section: Dryingmentioning

confidence: 99%

Review of Experimental Activities and Recent Developments of Spouted Bed Reactors at Different Operational Scales

Carozzo,

Arato,

Moliner

2024

Energies

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“…rotary dryers, belt dyers, flash dryers), taking into account that each technology has specific technical limits (e.g. the operating temperature) [14,[16][17][18][19].…”

Section: Technical Contextmentioning

confidence: 99%

A modelling approach for the assessment of an air-dryer economic feasibility for small-scale biomass steam boilers

Fusco

Jeanmart

Blondeau³

2015

Fuel Processing Technology

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“…One application of steam drying applied to biomass involves sawdust in a spouted bed at 200 or 240 C [35], and other trials have been carried with the steam gasification of biomass chars [36e39]. Higher temperatures were considered here, so that some biomass decomposition can be anticipated.…”

Section: Superheated Steam Dryingmentioning

confidence: 99%

Can biomass be satisfactorily gasified under pressure using an aqueous slurry feed? Examination by simulation

Stanmore¹,

Nzihou²

2017

Biomass and Bioenergy

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A major hurdle for the gasification of biomass under pressure is the need to introduce a fibrous biomass feed material such as straw, switchgrass or miscanthus into a pressure vessel. One proposed solution is to prepare a dense aqueous slurry from the biomass and then use a conventional high pressure pump. The production of syngas from wheat straw and subsequent power generation is examined theoretically in an Australian context. A slurry of concentration of 50% biomass by volume, which is regarded as the maximum pumpable value, is dried with superheated steam and the biomass gasified at 2 MPa with steam only in cyclones. It was found that the thermal deficiency of introducing excessive liquid water is considerable, rendering the process unsustainable. The problem can be overcome by employing a subsidiary fuel such as natural gas, but even with the minimal amount of water, the required energy input is equivalent to that of the straw. The net electrical efficiency of the process based on both fuels is 33.5%, so that the approach would be contemplated only if the over-riding consideration was the use of the straw for energy generation. The zero net present value cost of power production is 125 $ MWh-1 for 90 Gg of straw consumption per annum.

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Superheated steam drying of sawdust in continuous feed spouted beds – A design perspective

Cited by 14 publications

References 20 publications

Review of Experimental Activities and Recent Developments of Spouted Bed Reactors at Different Operational Scales

Review of Experimental Activities and Recent Developments of Spouted Bed Reactors at Different Operational Scales

A modelling approach for the assessment of an air-dryer economic feasibility for small-scale biomass steam boilers

Can biomass be satisfactorily gasified under pressure using an aqueous slurry feed? Examination by simulation

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