Shaped lignocellulosic-based activated carbon

Details Shaped lignocellulosic-based activated carbon Shaped lignocellulosic-based activated carbon

C - Chemistry, Metallurgy

01

B

C01B 31/14 (2006.01) B01J 20/20 (2006.01)

Patent

CA 2215814

Extruded pellets comprising a majority of activated carbon particles and an organic binder provide improved performance when processed through tumbling equipment while the pellets are in their "green" state, i.e., pellets which are fresh off the extruder and contain activated carbon, binder, and water and have not been subjected to any thermal processing (drying). The tumbling action both smoothes the pellets (by closing any cracks and greatly improving appearance) and increases the density of the packed bed, e.g., by increasing particle density and reducing voids between the pellets. Improved performance results from an ability to increase the weight of carbon pellets which can be packed into a fixed volume and thereby increase the volumetric working capacity of the bed for adsorbing/desorbing vapors. Another benefit is to greatly reduce the levels of dust associated with the carbon, both the initial dust and the dust attrition.

Pastilles extrudées renfermant principalement des particules de charbon activé et un liant organique; elles donnent un rendement amélioré lorsqu'elles sont traitées par culbutage à l'état « vert », c.-à-d. lorsqu'elles sont fraîchement sorties de l'extrudeur, qu'elles renferment du charbon actif, du liant et de l'eau, et qu'elles n'ont pas été soumises à un traitement thermique (séchage). Le culbutage adoucit les pastilles (en fermant toutes les fissures et en améliorant grandement leur apparence) tout en augmentant la masse spécifique du lit compacté, p. ex. en augmentant la masse spécifique des particules et en réduisant les vides entre les pastilles. La capacité d'augmenter la masse de pastilles de charbon pouvant être tassées dans un volume fixe permet d'accroître la capacité volumétrique de travail du lit au niveau de l'adsorption/désorption des vapeurs. Autre avantage : la forte réduction des concentrations initiales de poussières associées au charbon, ainsi qu'une accélération de leur diminution progressive.

Affiliated with

Also associated with

Rating

Shaped lignocellulosic-based activated carbon does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shaped lignocellulosic-based activated carbon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shaped lignocellulosic-based activated carbon will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1732253