Pilot testing of enhanced sorbents for calcium looping with cement production

Erans, María; Jeremiáš, Michal; Zheng, Lai; Yao, Joseph G.; Blamey, John; Manović, Vasilije; Fennell, Paul S.; Anthony, Edward J.

doi:10.1016/j.apenergy.2018.05.039

Cited by 56 publications

(33 citation statements)

References 68 publications

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“…Limestone is extensively used in the cement industry as a source of CaO and is responsible for 7-10% of anthropogenic CO 2 emissions (Zheng et al 2016). Calcium looping (CaL) has been proposed as an option for the cement industry to capture CO 2 (Erans et al 2018). Here, the CaO from CaL can be used in DAC, or if DAC is carried out with a lime-based sorbent, then the spent lime can be fed back into the cement industry.…”

Section: Introductionmentioning

confidence: 99%

“…The basic philosophy of this work is that limestone and lime-based materials are ubiquitous, cheap, nontoxic and are compatible with two of the most important industrial sources of anthropogenic CO 2 (namely cement and steel), and a lime-based process, if it can be made to perform at a comparable level to DAC processes using sodium or potassium hydroxide, is inherently preferable. Thus, while to date, experiments on capturing CO 2 focused on concentrations relevant to coal flue gases (10-15%) at elevated temperatures (Zheng et al 2016;Erans et al 2018), here we seek to demonstrate that these sorbents are suitable for DAC.…”

Section: Introductionmentioning

confidence: 99%

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Direct capture of carbon dioxide from air via lime-based sorbents

Samari

Ridha²,

Manović

et al. 2019

Mitig Adapt Strateg Glob Change

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Direct air capture (DAC) is a developing technology for removing carbon dioxide (CO 2 ) from the atmosphere or from low-CO 2 -containing sources. In principle, it could be used to remove sufficient CO 2 from the atmosphere to compensate for hard-to-decarbonize sectors, such as aviation, or even for polishing gas streams containing relatively low CO 2 concentrations. In this paper, the performance of lime-based sorbents for CO 2 capture from air in a fixed bed was investigated. The effects of sorbent type, particle diameter, air flow rate, and relative humidity on the breakthrough time, breakthrough shape, and global reaction rate over a series of capture and regeneration cycles were examined. The greatest reaction rates and conversions were obtained when the sorbents were pre-hydrated and inlet air was humidified to 55% relative humidity. Humidifying the air alone leads to axial carbonation gradients since there is competition between CO 2 and water with the available CaO. Negligible conversion, over the duration of the experiment, is obtained in a dry system without pre-hydration and humid air. A shrinking-core gas-solid reaction model was fitted to the breakthrough curves in order to estimate the surface reaction and effective diffusion constants. Although the surface reaction constants of the two sorbents were similar, the pelletized limestone had a greater effective diffusivity due to its greater porosity. At mild calcination conditions with air at 850°C, the pelletized particles maintained their activity over nine carbonation-calcination cycles with a conversion drop of only 9% points. However, calcination under oxy-fuel conditions (CO 2 at 920°C) reduced the pellet carbonation conversion from 81 to 59% and pore surface area from 12.01 to 3.20 m 2 /g after only 4 cycles. This research clearly shows that DAC using lime-based

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Direct capture of carbon dioxide from air via lime-based sorbents

Samari

Ridha²,

Manović

et al. 2019

Mitig Adapt Strateg Glob Change

Self Cite

View full text Add to dashboard Cite

show abstract

“…Another important element of the calcium-based reactive gas-solid system refers to the potential to reuse the spent solid material in the cement plant (clinker production). This element brings advantages in terms of reducing carbon footprint as well as improving technical and economic performance indicators [39]. As for the above-presented cases, the decarbonization process brings a positive effect in reducing the carbon footprint, but on the other hand, increases other environmental indicators [40].…”

Section: Cement Plantsmentioning

confidence: 87%

Techno-Economic and Environmental Evaluations of Decarbonized Fossil-Intensive Industrial Processes by Reactive Absorption & Adsorption CO2 Capture Systems

et al. 2020

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Decarbonization of energy-intensive systems (e.g., heat and power generation, iron, and steel production, petrochemical processes, cement production, etc.) is an important task for the development of a low carbon economy. In this respect, carbon capture technologies will play an important role in the decarbonization of fossil-based industrial processes. The most significant techno-economic and environmental performance indicators of various fossil-based industrial applications decarbonized by two reactive gas-liquid (chemical scrubbing) and gas-solid CO2 capture systems are calculated, compared, and discussed in the present work. As decarbonization technologies, the gas-liquid chemical absorption and more innovative calcium looping systems were employed. The integrated assessment uses various elements, e.g., conceptual design of decarbonized plants, computer-aided tools for process design and integration, evaluation of main plant performance indexes based on industrial and simulation results, etc. The overall decarbonization rate for various assessed applications (e.g., power generation, steel, and cement production, chemicals) was set to 90% in line with the current state of the art in the field. Similar non-carbon capture plants are also assessed to quantify the various penalties imposed by decarbonization (e.g., increasing energy consumption, reducing efficiency, economic impact, etc.). The integrated evaluations exhibit that the integration of decarbonization technologies (especially chemical looping systems) into key energy-intensive industrial processes have significant advantages for cutting the carbon footprint (60–90% specific CO2 emission reduction), improving the energy conversion yields and reducing CO2 capture penalties.

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“…Limestone from Malaysia that are untreated with acid shows higher surface area and pore volume size which is 15.65 and 0.0537 m 2 /g, respectively, than Cadomin limestone, 5.2 m 2 /g (Ridha et al, 2013), limestone 9 m/ g (Li et al, 2009), limestone from Spain, 5 m 2 /g (Benitez-Guerrero et al, 2018) and Longcal limestone. <1 m 2 /g (Erans et al, 2018). After the treatment with oxalic acid, higher surface area was exhibited compared to non-treated limestone which is 17.01 m 2 /g.…”

Section: Analysis Of Sorbentmentioning

confidence: 90%

“…Over the years, many studies have been carried out to improve the sorbent performance in the CCL process. Example of improvements include the use of water as a reactivation agent for the sorbent (Ramkumar and Fan, 2010;Mutch et al, 2017), salt doping (Sun et al, 2012;Erans et al, 2018), thermal pre-treatment (Valverde et al, 2017), and acid pre-treatment (Ridha et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

CO2 Capture for Dry Reforming of Natural Gas: Performance and Process Modeling of Calcium Carbonate Looping Using Acid Based CaCO3 Sorbent

et al. 2021

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Several industrial activities often result in the emissions of greenhouse gases such as carbon dioxide and methane (a principal component of natural gas). In order to mitigate the effects of these greenhouse gases, CO2 can be captured, stored and utilized for the dry reforming of methane. Various CO2 capture techniques have been investigated in the past decades. This study investigated the performance and process modeling of CO2 capture through calcium carbonate looping (CCL) using local (Malaysia) limestone as the sorbent. The original limestone was compared with two types of oxalic acid-treated limestone, with and without aluminum oxide (Al2O3) as supporting material. The comparison was in terms of CO2 uptake capacity and performance in a fluidized bed reactor system. From the results, it was shown that the oxalic acid-treated limestone without Al2O3 had the largest surface area, highest CO2 uptake capacity and highest mass attrition resistance, compared with other sorbents. The sorbent kinetic study was used to design, using an Aspen Plus simulator, a CCL process that was integrated with a 700 MWe coal-fired power plant from Malaysia. The findings showed that, with added capital and operation costs due to the CCL process, the specific CO2 emission of the existing plant was significantly reduced from 909 to 99.7 kg/MWh.

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Pilot testing of enhanced sorbents for calcium looping with cement production

Cited by 56 publications

References 68 publications

Direct capture of carbon dioxide from air via lime-based sorbents

Direct capture of carbon dioxide from air via lime-based sorbents

Techno-Economic and Environmental Evaluations of Decarbonized Fossil-Intensive Industrial Processes by Reactive Absorption & Adsorption CO2 Capture Systems

CO2 Capture for Dry Reforming of Natural Gas: Performance and Process Modeling of Calcium Carbonate Looping Using Acid Based CaCO3 Sorbent

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