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Abstract

A laboratory-scale, fluidized-bed pellet reactor (BPR) was used khổng lồ investigate a CaCO3 crystallization process for the recovery of CO2 in a Direct Air Capture (DAC) process. The BPR performance was validated against data from a pilot-scale unit. Subsequently, the pellet growth under process-relevant conditions was studied over a period of 144 h. The experimental results with the BPR, containing a bed of pellets sized between 0.65 và 0.84 mm, have shown that a calcium retention of 80% can be achieved at a fluidization velocity of 60 m h-1 & a calcium loading rate of 3 mol h-1. This result is consistent with calcium retention observed at pilot scale operation and hence, results from the BPR are considered representative for the pilot scale unit. Starting with a bed of pellets sized between 0.15 & 0.5 mm, the average pellet growth rate, G, at the reactor bottom increased from 8.1E-10 lớn 11E–10 m s-1 at the onset và decreased lớn 4.9E–10 m s-1 over the course of a 144 h test. The calcium retention over the course the chạy thử showed the same trend (initial increase và final decrease) as the pellet growth rate. A theoretical bed growth mã sản phẩm was developed & validatedmore» against data from the pilot scale & benchtop pellet reactors. The model was used lớn calculate the bed porosity và total pellet surface area in each control volume. Lastly, the pellet surface area growth at the bottom of the reactor reproduced the pellet growth & retention data trends.«less


Authors: Burhenne, Luisa<1>; Giacomin, Caroline<1>; Follett, Trevor<2>; Ritchie, Jane<2>; McCahill, Jenny S. J.<2>; Mérida, Walter<1>
The Univ. Of British Columbia, Vancouver, BC (Canada) Carbon Engineering Ltd., Squamish, BC (Canada) Publication Date: Wed Oct 25 00:00:00 EDT 2017 Research Org.: Carbon Engineering Ltd., Squamish, BC (Canada) Sponsoring Org.: USDOE Office of Fossil Energy (FE) hsnovini.com Identifier: 1408912 Alternate Identifier(s): hsnovini.com ID: 1549408 Grant/Contract Number: FE0026861 Resource Type: Journal Article: Accepted Manuscript Journal Name: Journal of Environmental Chemical Engineering (Online) Additional Journal Information: Journal Volume: 5; Journal Issue: 6; Journal ID: ISSN 2213-3437 Publisher: Elsevier Country of Publication: United States Language: English Subject: 37 INORGANIC, ORGANIC, PHYSICAL, & ANALYTICAL CHEMISTRY; 54 ENVIRONMENTAL SCIENCES; Direct air capture; Crystallization; CaCO3; Fluidized bed crystallization; Particle growth rate
Burhenne, Luisa, Giacomin, Caroline, Follett, Trevor, Ritchie, Jane, McCahill, Jenny S. J., & Mérida, Walter. Characterization of reactive CaCO3 crystallization in a fluidized bed reactor as a central process of direct air capture. United States: N. P., 2017. Web. Doi:10.1016/j.jece.2017.10.047.
Burhenne, Luisa, Giacomin, Caroline, Follett, Trevor, Ritchie, Jane, McCahill, Jenny S. J., và Mérida, Walter. Characterization of reactive CaCO3 crystallization in a fluidized bed reactor as a central process of direct air capture. United States. Https://doi.org/10.1016/j.jece.2017.10.047
Burhenne, Luisa, Giacomin, Caroline, Follett, Trevor, Ritchie, Jane, McCahill, Jenny S. J., và Mérida, Walter. 2017. "Characterization of reactive CaCO3 crystallization in a fluidized bed reactor as a central process of direct air capture". United States. Https://doi.org/10.1016/j.jece.2017.10.047. Https://www.hsnovini.com/servlets/purl/1408912.


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articlehsnovini.com_1408912, title = Characterization of reactive CaCO3 crystallization in a fluidized bed reactor as a central process of direct air capture, tác giả = Burhenne, Luisa & Giacomin, Caroline and Follett, Trevor và Ritchie, Jane and McCahill, Jenny S. J. & Mérida, Walter, abstractNote = A laboratory-scale, fluidized-bed pellet reactor (BPR) was used to investigate a CaCO3 crystallization process for the recovery of CO2 in a Direct Air Capture (DAC) process. The BPR performance was validated against data from a pilot-scale unit. Subsequently, the pellet growth under process-relevant conditions was studied over a period of 144 h. The experimental results with the BPR, containing a bed of pellets sized between 0.65 và 0.84 mm, have shown that a calcium retention of 80% can be achieved at a fluidization velocity of 60 m h-1 & a calcium loading rate of 3 mol h-1. This result is consistent with calcium retention observed at pilot scale operation và hence, results from the BPR are considered representative for the pilot scale unit. Starting with a bed of pellets sized between 0.15 & 0.5 mm, the average pellet growth rate, G, at the reactor bottom increased from 8.1E-10 khổng lồ 11E–10 m s-1 at the onset & decreased to 4.9E–10 m s-1 over the course of a 144 h test. The calcium retention over the course the kiểm tra showed the same trend (initial increase & final decrease) as the pellet growth rate. A theoretical bed growth model was developed & validated against data from the pilot scale and benchtop pellet reactors. The mã sản phẩm was used lớn calculate the bed porosity & total pellet surface area in each control volume. Lastly, the pellet surface area growth at the bottom of the reactor reproduced the pellet growth và retention data trends., doi = 10.1016/j.jece.2017.10.047, url = https://www.hsnovini.com/biblio/1408912, journal = Journal of Environmental Chemical Engineering (Online), issn = 2213-3437, number = 6, volume = 5, place = United States, year = Wed Oct 25 00:00:00 EDT 2017, month = Wed Oct 25 00:00:00 EDT 2017