Solar coal gasification

Gregg, D.W.; Aiman, W.R.; Otsuki, H.H.; Thorsness, C.B.

doi:10.1016/0038-092x(80)90489-2

Cited by 64 publications

(25 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4 In the long term, this technology has the potential of becoming economically competitive even before the application of government subsidies and/or credit for pollution abatement, mainly due to the elimination of the air separation unit as well as significant savings ([35%) in feedstock consumption. 9 The solar gasification of petroleum coke and coal was performed in fluidized-bed and vortex-flow solar reactors, 1,4,[10][11][12][13][14] where the direct irradiation of particle suspensions was found to be an effective means of heat transfer directly to the reaction site, producing ultra fast heating rates ($1000 K/s) and enhanced kinetics. 14 The transparent window needed for optical access of concentrated solar radiation is, however, a critical component under high pressures and severe atmospheres.…”

Section: Introductionmentioning

confidence: 99%

Solar gasification of carbonaceous waste feedstocks in a packed‐bed reactor—Dynamic modeling and experimental validation

Piatkowski

Steinfeld

2011

AIChE Journal

View full text Add to dashboard Cite

Thermochemical gasification of carbonaceous waste feedstocks (specifically: scrap tire powder, industrial sludge, and sewage sludge) for high‐quality syngas production is numerically modeled and experimentally validated using concentrated solar process heat. The solar reactor consists of two cavities separated by a radiant emitter, with the upper one serving as the solar radiative absorber and the lower one containing the reacting packed bed. The reactor is modeled by considering combined heat transfer coupled to the reaction kinetics, driven by the applied solar flux at the reactor's aperture. Model validation is accomplished in terms of converted mass, reactor temperatures, efficiency, and solar upgrade based on experiments with an 8‐kW reactor subjected to solar fluxes up to 2560 suns and packed bed temperatures up to 1490 K. The transient operation of a 200‐kW pilot‐scale reactor for gasifying industrial sludge is simulated for a solar day, yielding a maximum solar‐to‐fuel energy conversion efficiency of 89%. © 2011 American Institute of Chemical Engineers AIChE J, 2011

show abstract

Section: Introductionmentioning

confidence: 99%

Solar gasification of carbonaceous waste feedstocks in a packed‐bed reactor—Dynamic modeling and experimental validation

Piatkowski

Steinfeld

2011

AIChE Journal

View full text Add to dashboard Cite

show abstract

“…The packed or fixed bed configuration was initially proposed for a solar reactor [23], it represents the only common working solution already experimented for all type of gasification technologies. The reactor features will remain fixed for all the simulations to assess the processes' efficiency independently from its design.…”

Section: Page 3 Of 30mentioning

confidence: 99%

Assessing biomass steam gasification technologies using a multi-purpose model

Sepe

Li²,

Paul

2016

Energy Conversion and Management

View full text Add to dashboard Cite

Two advanced steam-gasification technologies of biomass, high temperature steam gasification (HTSG) and solar-assisted steam gasification, have been thermodynamically investigated in this work and compared with both conventional auto-thermal gasification and High Temperature Air and Steam Gasification (HTAG). A multi-phase, multi-physics 1D steady-state model has been built up to predict the biomass gasification performance, efficiency, yield and species of produced syngas at varying gasification methods and input parameters. In particular, heterogeneous and homogenous gasification reactions coupled with a radiative transfer were employed in the solar-assisted steam gasification. The results showed that the solar-assisted steam gasification technology demonstrates its potential to produce high quality syngas (nearly 42% H 2 and 35% CO). Moreover, it upgrades the heating value of the product syngas up to 1.4 times more than the original value, due to the additional solar energy induction. Compared with conventional auto-thermal gasification, it was found that the process efficiency can be improved from 65% to 81% if using the HTAG technology and the content of hydrogen in the syngas increased from 30% to 55% if applying HTSG. The modelling results agree considerably with the reported experimental and modelling data in literature, and also able to return a direct comparison of advantage and disadvantage of each gasification method, in terms of syngas quantity and quality.

show abstract

“…The steam gasiÿcation of carbonaceous materials and related reactions have been performed using solar energy in exploratory early studies with coal (Beattie, 1981;Beattie et al, 1983;Gregg et al, 1979;Kubiak and Lohner, 1992), and with oil shales (Flechsenhar and Sasse, 1995;Fletcher and Berber, 1988;Gregg et al, 1980;Ingel et al, 1992). More recently, the CO 2 gasiÿcation of coal was investigated using a uidized-bed reactor under direct irradiation (Kodama et al, 2002).…”

Section: Introductionmentioning

confidence: 98%