Dynamic simulation and control of solar biomass gasification for hydrogen-rich syngas production during allothermal and hybrid solar/autothermal operation

Boujjat, Houssame; Yuki, Giberto Mitsuyoshi; Rodat, Sylvain; Abanades, Stéphane

doi:10.1016/j.ijhydene.2020.01.072

Cited by 37 publications

(23 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The solar baseline was defined by a thermal power input on the solar field of 10 MWth (at a Direct Normal Irradiance DNI of 1000 W.m −2 ). Thus, Solar_baseline OPTI, HYB DC was directly deduced from the previously developed dynamic model [19]. It was estimated at 1402.0 kg H2/day for the OPTI mode and 4196.1 kg H2/day for the HYB mode.…”

Section: =mentioning

confidence: 99%

“…On the one hand, the solar process allows for the production of a highquality synthesis gas with a higher gas output per unit of feedstock, and on the other hand, the solar process is highly dependent on an intermittent heat source, which requires an initial substantial investment. The question is, therefore, not simple, and requires detailed investigation to highlight both technical aspects related to the management of the heat source variability [17][18][19][20] and economic and financial aspects for accurate cost evaluation [21][22][23]. In a previous work [19], a dynamic mathematical model of an up-scaled MW steam solar gasifier was developed.…”

Section: Introductionmentioning

confidence: 99%

“…The question is, therefore, not simple, and requires detailed investigation to highlight both technical aspects related to the management of the heat source variability [17][18][19][20] and economic and financial aspects for accurate cost evaluation [21][22][23]. In a previous work [19], a dynamic mathematical model of an up-scaled MW steam solar gasifier was developed. The model was used to assess the transient behavior of the reactor for three successive days with and without cloud cover.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Techno-Economic Assessment of Solar-Driven Steam Gasification of Biomass for Large-Scale Hydrogen Production

2021

Self Cite

View full text Add to dashboard Cite

Solar biomass gasification is an attractive pathway to promote biomass valorization while chemically storing intermittent solar energy into solar fuels. The economic feasibility of a solar gasification process at a large scale for centralized H2 production was assessed, based on the discounted cash-flow rate of return method to calculate the minimum H2 production cost. H2 production costs from solar-only, hybrid and conventional autothermal biomass gasification were evaluated under various economic scenarios. Considering a biomass reference cost of 0.1 €/kg, and a land cost of 12.9 €/m2, H2 minimum price was estimated at 2.99 €/kgH2 and 2.48 €/kgH2 for the allothermal and hybrid processes, respectively, against 2.25 €/kgH2 in the conventional process. A sensitivity study showed that a 50% reduction in the heliostats and solar tower costs, combined with a lower land cost of below 0.5 €/m2, allowed reaching an area of competitiveness where the three processes meet. Furthermore, an increase in the biomass feedstock cost by a factor of 2 to 3 significantly undermined the profitability of the autothermal process, in favor of solar hybrid and solar-only gasification. A comparative study involving other solar and non-solar processes led to conclude on the profitability of fossil-based processes. However, reduced CO2 emissions from the solar process and the application of carbon credits are definitely in favor of solar gasification economics, which could become more competitive. The massive deployment of concentrated solar energy across the world in the coming years can significantly reduce the cost of the solar materials and components (heliostats), and thus further alleviate the financial cost of solar gasification.

show abstract

Section: =mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Techno-Economic Assessment of Solar-Driven Steam Gasification of Biomass for Large-Scale Hydrogen Production

2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…These results were related to the exothermic combustion reaction. A dynamic model at 10 MWsolar scale was also proposed [33] to evaluate three feeding control strategies of the reactor: constant wood feeding rate, variable feeding rate to maintain the reactor temperature at 1200°C during the day, combination of variable feeding rate plus oxygen injection to operate round the clock. Dynamic simulation during three consecutive typical days was performed, which confirmed the benefit of hybridization for reliable continuous operation, and paved the way to annual simulations for technoeconomic assessment.…”

Section: Figure 6: Principle Of the Solar Hybrid Biomass Gasificationmentioning

confidence: 99%

On the path toward day and night continuous solar high temperature thermochemical processes: A review

Rodat

Abanades

Boujjat

et al. 2020

Renewable and Sustainable Energy Reviews

Self Cite

View full text Add to dashboard Cite

High temperature solar thermochemical processes for fuels and chemical commodities production have been studied for decades and their feasibility is now proven. However, industrial deployment is limited and one of the main reasons is that the variability of solar energy hinders a priori day and night continuous solar process operation. Nevertheless, solar intermittence is now very well managed for Concentrated Solar Power (CSP) electricity production. Indeed, thermal storage up to 600°C is demonstrated and CSP electricity is base-load capable. However, far beyond electricity, heat supply is the major need in industry. This work reviews the recent works published or patented in the field of continuous operation of high temperature solar thermochemical processes (>600°C). There is currently a strong commitment toward day and night solar processes operation since it could improve durability, quality of the products, efficiency and economics of such technologies. Indeed, industrial processes are mainly continuous and daily start up and shut down strongly limit the production capacity of the solar-driven processes, which represents a major lock for scale up. For the first time in this paper, day and night continuous high temperature solar processes are reviewed and categorized. The reported works show the great innovation activity in this field and the various options investigated to date. The main outcomes show that continuous heat supply is possible thanks to hybridization or thermal energy storage. Highlights: Round the clock high temperature solar thermochemical processes are reviewed  Hybridization (fuel, electricity) enables day and night operation  Hybrid solar/autothermal process can operate 24h a day  Heat storage can supply solar heat at night, either directly or indirectly  The solar flame concept is presented for continuous high temperature heat supply

show abstract

“…Since then, other reactor designs, including packed beds [20,25], fluidized beds [18,26], spouted beds [15,27], vortex flow [21,28], drop tube [16,29], and molten salt [10,30] reactors were tested to convert a wide variety of feedstocks such as biomass, coal and different kinds of waste with either steam or CO 2 as an oxidizing agent. Recent exploratory work on hybrid solar gasification makes use of O 2 as a means to maintain the process temperature during sun-lacking periods thanks to combined solar heating and in-situ oxy-combustion [31][32][33][34]. Recently, the concept of coupling solar energy with thermochemical reactions to energetically upgrade biomass has been extended to hydrothermal processes [35,36].…”

Section: Introductionmentioning

confidence: 99%

Solar-hybrid Thermochemical Gasification of Wood Particles and Solid Recovered Fuel in a Continuously-Fed Prototype Reactor

2020

Self Cite

View full text Add to dashboard Cite

Solar thermochemical gasification is a promising solution for the clean production of low-emission synthetic fuels. It offers the possibility to upgrade various biomasses and waste feedstocks and further provides an efficient way to sustainably store solar energy into high-value and energy-intensive chemical fuels. In this work, a novel continuously-fed solar steam gasifier was studied using beechwood and solid recovered fuels (SRF) particles. Solar-only and hybrid solar/autothermal gasification experiments were performed at high temperatures to assess the performance of the reactor and its flexibility in converting various types of feedstocks. The hybrid operation was considered to increase the solar reactor temperature when the solar power input is not sufficient thanks to partial feedstock oxy-combustion. The hybrid solar process is thus a sustainable alternative option outperforming the conventional gasification processes for syngas production. Wood and waste particles solar conversion was successfully achieved, yielding high-quality syngas and suitable reactor performance, with Cold Gas Efficiencies (CGE) up to 1.04 and 1.13 respectively during the allothermal operation. The hybrid process allowed operating with a lower solar power input, but the H2 and CO yields noticeably declined. SRF gasification experiments suffered furthermore from ash melting/agglomeration issues and injection instabilities that undermined the continuity of the process. This study demonstrated the solar reactor flexibility in converting both biomass and waste feedstocks into syngas performed in continuous feeding operation. The experimental outcomes showed the feasibility of operating the reactor in both allothermal (solar-only) and hybrid allothermal/autothermal (combined solar and oxy-combustion heating) for continuous syngas production with high yields and energy conversion efficiencies.

show abstract

Dynamic simulation and control of solar biomass gasification for hydrogen-rich syngas production during allothermal and hybrid solar/autothermal operation

Cited by 37 publications

References 26 publications

Techno-Economic Assessment of Solar-Driven Steam Gasification of Biomass for Large-Scale Hydrogen Production

Techno-Economic Assessment of Solar-Driven Steam Gasification of Biomass for Large-Scale Hydrogen Production

On the path toward day and night continuous solar high temperature thermochemical processes: A review

Solar-hybrid Thermochemical Gasification of Wood Particles and Solid Recovered Fuel in a Continuously-Fed Prototype Reactor

Contact Info

Product

Resources

About