Combined gas conditioning and cleaning for reduction of tars in biomass gasification

Pallozzi, V.; Carlo, Andrea Di; Bocci, Enrico; Carlini, Maurizio

doi:10.1016/j.biombioe.2017.12.023

Cited by 23 publications

(10 citation statements)

References 40 publications

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“…The most common catalyst used for contaminant removal is natural dolomite CaMg(CO3)2, which is very cheap [79][80][81]. Pinto et al [82] found that in the presence of dolomite the highest gas yield and a higher heating value (HHV) of syngas were reached, concluding that dolomite is a highly attractive catalyst.…”

Section: High Temperature Primary Methods For Hcl Removalmentioning

confidence: 99%

A Review of Hot Gas Cleaning Techniques for Hydrogen Chloride Removal from Biomass-Derived Syngas

2021

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Considering the pressing challenges of supply security and climate change, advanced processes to produce electricity and biofuels from biomass have to be developed. Biomass gasification is a very promising technology, but there is a lack of comprehensive reviews, specifically on the technologies for hydrogen chloride hot gas cleanup, which are necessary in order to work at the same temperature and respect the limits of advanced downstream components. In this review, the Cl content of the main biomasses in Europe is given, and data on syngas content and the tolerance of downstream equipment are highlighted. Hot gas cleaning technologies, which have the advantage of improved thermal efficiency are reviewed, analyzing the thermodynamic and primary and secondary methods. This review identifies NaAlO2 and Na2CO3 within 450–550 °C as the most effective sorbents, which are able to reduce the concentration of HCl below 1 ppm. Nevertheless, H2S cannot be simultaneously removed and has to be removed first, because it reduces the HCl adsorption sorbent capacity.

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Section: High Temperature Primary Methods For Hcl Removalmentioning

confidence: 99%

A Review of Hot Gas Cleaning Techniques for Hydrogen Chloride Removal from Biomass-Derived Syngas

2021

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“…Research about small scale gasification is mainly focused on gasifier design in order to enhance fuel flexibility [101][102][103][104] and tar reduction through primary and secondary methods [35,36,105]. Several moving bed and fluidized bed gasifier prototypes have been developed throughout the last decades without reaching market readiness.…”

Section: Research and Future Applicationsmentioning

confidence: 99%

Barriers to Success: A Technical Review on the Limits and Possible Future Roles of Small Scale Gasifiers

Allesina¹,

Pedrazzi²

2021

Energies

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Literature and manuals refer to biomass gasification as one of the most efficient processes for power generation, highlighting features, such as residual biomass use, distributed generation and carbon sequestration, that perfectly incorporate gasification into circular economies and sustainable development goals. Despite these features, small scale applications struggle to succeed as a leading solution for sustainable development. The aim of this review is to investigate the existing technological barriers that limit the spreading of biomass gasification from a socio-technical point of view. The review outlines how existing technologies originated from under feed-in-tariff regimes and highlights where the current design goals strongly differ from what will be needed in the near future. Relevant market-ready small-scale gasification systems are analyzed under this lens, leading to an analysis of the reactor and filtration design. To help understand the economical sustainability of these plants, an analysis of the influence of capital expenditures and operating expenditures on the return of investment is included in the discussion. Finally, a literature review on prototypes and pre-market reactors is used as a basis for spotting the characteristics of the system that will likely resolve issues around fuel flexibility, cost efficiency and load variability.

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“…Tar is a mixture of condensable hydrocarbons, with compound of aromatic [33][34][35]. Due to corrosive property of the tar, it is disallowed direct utilization of a producer gas [36]. In power application, tar in producer gas may block and contaminate the fuel line, filter, engine, and turbine [37].…”

Section: Introductionmentioning

confidence: 99%

Development of An Air-Stage Downdraft Gasifier and Performance Evaluation on Feedstock of Rice Husk

Susastriawan

Purwanto

Purnomo

et al. 2024

ARFMTS

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Due to depletion of conventional fuel and increasing global warming, biomass wastes have been explored and investigated by many researchers worldwide. A biomass gasification power plant is a promising conversion technology for energy sustainability. From many existing gasifiers have been developed, mostly they have high technology, large capacity, and very costly, thus unsuitable for remote area di Indonesia. The present work aims to build a simple and low cost double air-stage downdraft gasifier for a small-scale biomass power plant system. The gasifier is tested on rice husk at equivalence ratio of 0.20, 0.30, and 0.40. The parameters evaluated are axial temperature, fuel consumption rate, heating rate, thermal efficiency, and tar content. The results show that the highest gasification temperature, fuel consumption rate, heating rate, and thermal efficiency are occurs at equivalence ratio of 0.4. The values are 904.5°C, 4.14 kg/h, 25.38 kJ/h, and 63.18%, respectively. The significant findings is that the gasifier generates producer gas with low tar content, i.e. 23.9 mg/m3 at equivalence ratio of 0.4 and the producer gas is successfully used to run the 3 kW generator set. For sustainability operation of the power plant, it is important to test the gasifier on various biomass waste feedstocks.

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Combined gas conditioning and cleaning for reduction of tars in biomass gasification

Cited by 23 publications

References 40 publications

A Review of Hot Gas Cleaning Techniques for Hydrogen Chloride Removal from Biomass-Derived Syngas

A Review of Hot Gas Cleaning Techniques for Hydrogen Chloride Removal from Biomass-Derived Syngas

Barriers to Success: A Technical Review on the Limits and Possible Future Roles of Small Scale Gasifiers

Development of An Air-Stage Downdraft Gasifier and Performance Evaluation on Feedstock of Rice Husk

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