Separation of particles from syngas at high-temperatures with an electrostatic precipitator

Villot, Audrey; Gonthier, Y.; Gonze, E.; Bernis, A.; Ravel, S.; Grateau, Maguelone; Guillaudeau, Jacques

doi:10.1016/j.seppur.2011.04.028

Cited by 43 publications

(17 citation statements)

References 33 publications

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“…As part of the EPURGAS project, this technique was studied in a temperature range between 500 to 800°C. An experimental electrostatic precipitator (ESP) designed by LOCIE (Universite´de Savoie) was connected to the fluidized bed reactor of CEA and tests were performed with a real syngas produced from wood gasification (Villot et al, 2012).…”

Section: Electro-filtration Resultsmentioning

confidence: 99%

Inorganic Species Behaviour in Thermochemical Processes for Energy Biomass Valorisation

Froment

Seiler

Defoort

et al. 2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Re´sume´-Comportement des espe`ces inorganiques dans les proce´de´s thermochimiques de valorisation e´nerge´tique de la biomasse -Les espe`ces inorganiques de la biomasse (bois, de´chets agricoles, de´chets me´nagers voire boues d'e´puration) pre´sentent un large spectre en compositions et quantite´s, de´pendant de l'origine de la biomasse (nature, lieux et conditions de sa croissance, etc.). Les diffe´rents proce´de´s de conversion (combustion, pyrolyse, gaze´ification, etc.) et les diffe´rentes technologies associe´es (fours a`grille, lits fixes ou fluidise´s, re´acteurs a`flux entraıˆne´s, etc.) utilisant l'e´nergie de la biomasse, fournissent des conditions ope´ratoires tre`s varie´es en atmosphe`re, tempe´rature, pression, etc. Au cours de chacun de ces proce´de´s thermiques de conversion, en fonction de la composition initiale de la biomasse, de l'atmosphe`re et la tempe´rature du proce´de´(la pression est un parame`tre de second ordre par rapport aux pre´ce´dents), certaines espe`ces inorganiques re´agissent pour former des compose´s liquides ou gazeux, seuls ou combine´s a`d'autres espe`ces : celles-ci peuvent eˆtre soit pie´ge´es a`diffe´rents endroits dans le proce´de´, soit relaˆche´es avec le gaz. Les interactions potentielles de ces espe`ces inorganiques avec les parois des re´acteurs, les mate´riaux de lits (en re´acteurs a`lits fluidise´s), les canalisations et l'aval du proce´de´ne sont pas toujours bien connues. Ces sujets concernant le comportement des espe`ces inorganiques et les conse´quences technologiques et e´conomiques vont probablement prendre de l'importance dans un futur proche en raison de : -la tension sur le marche´du bois qui augmente ainsi que les prix : une solution est de remplacer cette ressource « noble et propre » qu'est le bois par une ressource plus riche en cendres, comme la paille, les cultures e´nerge´tiques de´die´es, ou les de´chets agricoles voire me´nagers. La production de biogaz depuis des de´charges de de´chets est une bonne illustration de la valorisation de de´chets. Aller plus loin dans l'utilisation de ces ressources (conversion thermochimique) riches en cendres augmentera leur potentielle re´utilisation mais e´galement les difficulte´s techniques de manie`re importante ! -l'enrichissement des sols pour l'agriculture de´pend aujourd'hui de la possibilite´de re´emploi des cendres de biomasse, auxquelles il faut ajouter des fertilisants artificiels. La question de comment re´utiliser la matie`re inorganique de la biomasse apre`s conversion thermochimique devient un sujet important. L'objectif est de pre´senter une synthe`se des difficulte´s technologiques lie´es a`la pre´sence de ces espe`ces inorganiques (corrosion, bouchages, etc.) : un re´sume´de´taille´du comportement des espe`ces inorganiques de la biomasse dans les proce´de´s thermiques sera donne´, allant des espe`ces relaˆche´es pendant le traitement de la biomasse jusqu'a`la pre´vention et les solutions quand c'est possible. Les sujets suivants seront de´veloppe´s: ?

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Section: Electro-filtration Resultsmentioning

confidence: 99%

Inorganic Species Behaviour in Thermochemical Processes for Energy Biomass Valorisation

Froment

Seiler

Defoort

et al. 2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…Hot gas cleaning strategies can therefore improve energy efficiency (i.e. the fraction of energy entering the system recovered in useful forms) and reduce equipment costs since cooling and reheating are avoided [34] [18]. This does not apply to atmospheric gasification, where syngas needs compressing, thus cooling, before upgrading.…”

Section: Technical Solutionsmentioning

confidence: 99%

Integration and Evaluation

Kossiakoff¹,

Sweet²,

Seymour³

et al. 2011

Systems Engineering Principles and Practice

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“…Although hot gas cleaning is still at the developmental stage, demonstrations so far show that this technique possesses the capability of enhancing the overall efficiency of the gasification system. However, contaminants such as carbon particles in the syngas can potentially cause erosion of metallic components and particle depositions during hot gas cleaning [6].…”

Section: Introductionmentioning

confidence: 99%

Analytical and Thermal Evaluation of Carbon Particles Recovered at the Cyclone of a Downdraft Biomass Gasification System

2017

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Gasification of biomass gives off syngas that is contaminated mostly by carbon particulates and tars. The degree of contamination is attributed to factors such as gasification process, type of gasifier and type of biomass material. Downdraft gasifier minimizes the production of tar to a tolerable limit for engine applications; however, carbon particles still pose a challenge particularly with the integration of a heat exchanger for the purpose of heat recovery from the product gas. The presence of carbon particles in the syngas does influence the heat recovery process and materials used in the recovery. Hence, there is need for the characterization of these carbon particles to ascertain their chemical compositions, thermal properties and morphological features. This study was aimed at evaluating the characteristic features of carbon particles recovered from the syngas stream during gas cleaning at the cyclone. The elemental analysis of the carbon particle samples was performed using energy dispersive X-ray spectroscopy. An electron beam from scanning electron microscopy was passed through the sample surface at a magnification of 1000x and an accelerating voltage of 15 kV to determine the morphological features of the carbon particles. Their thermal properties were investigated using a thermogravimetric analyzer at a heating rate of 10 • C/min. A weight loss of approximately 5.4 wt % was recorded at the maximum temperature of 900 • C. Silicon, oxygen and carbon were found to be the dominating elements in the carbon particulate.

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Separation of particles from syngas at high-temperatures with an electrostatic precipitator

Cited by 43 publications

References 33 publications

Inorganic Species Behaviour in Thermochemical Processes for Energy Biomass Valorisation

Inorganic Species Behaviour in Thermochemical Processes for Energy Biomass Valorisation

Integration and Evaluation

Analytical and Thermal Evaluation of Carbon Particles Recovered at the Cyclone of a Downdraft Biomass Gasification System

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