Design of a Solar Thermochemical Reactor for Calcium Oxide Based Carbon Dioxide Capture

2015 ◽  
Author(s):  
Leanne Reich ◽  
Luke Melmoth ◽  
Robert Gresham ◽  
Terrence Simon ◽  
Wojciech Lipiński
Keyword(s):  
Carbon Dioxide ◽  
Calcium Carbonate ◽  
Calcium Oxide ◽  
Thermal Analyses ◽  
Reactor Design ◽  
Gas Flows ◽  
Carbonate Carbon ◽  
Calcination Step ◽  
Oxide Particles ◽  
Concentrated Solar Radiation

An engineering design for a 1-kW dual-cavity solar-driven reactor to capture carbon dioxide via the calcium oxide based two-step carbonation-calcination cycle is presented. In the low temperature carbonation step, gas containing up to 15% carbon dioxide flows through a gas manifold and plenum into an annular reaction zone filled with calcium oxide particles. The carbon dioxide reacts with the calcium oxide, forming calcium carbonate. Carbon dioxide-depleted gas flows out of the reactor through a second gas manifold. In the high temperature calcination step, concentrated solar radiation enters the beam-up oriented, windowless reactor and is absorbed by the diathermal cavity wall, which transfers heat via conduction to the calcium carbonate particles formed in the previous step. The calcium carbonate dissociates into calcium oxide and carbon dioxide. Additional carbon dioxide is used as a sweep gas to ensure high purity carbon dioxide at the outlet. Mechanical and thermal analyses are conducted to refine an initial reactor design and identify potential design shortcomings. Numerically predicted temperature profiles in the reactor are presented and the final reactor design is established.

Preparation of Plate-Shaped Calcium Carbonate and its Application in the Coating Paper

2011 ◽  
Vol 236-238 ◽  
pp. 1124-1127
Author(s):  
Sen Wang ◽  
Xin Ping Li ◽  
Er Lin Mao ◽  
Zhuo Yuan Cheng
Keyword(s):  
Carbon Dioxide ◽  
Calcium Carbonate ◽  
Calcium Oxide ◽  
High Performance ◽  
Air Permeability ◽  
Paper Coating ◽  
Reaction Conditions ◽  
Printing Ink

This paper deals with the preparation of Plate-shaped Calcium Carbonate and Its Application in the Paper Coating. calcium oxide and carbon dioxide were used as major materials to preparetion the Plate-shaped Calcium Carbonate, The best reaction conditions as follows: w(CaO)：w（H2O）=1：5, V（CO2）：V（atmosphere）=1：2. Then use the Plate-shaped Calcium Carbonate in spreading. The results show that the Plate-shaped Calcium Carbonate is a high-performance product that can obviously enhance the paper’s smoothness, whiteness, air permeability, printing ink absorbance.

A Solar Reactor Design for Research on Calcium Oxide-Based Carbon Dioxide Capture

2017 ◽  
Vol 139 (5) ◽  
Author(s):  
Leanne Reich ◽  
Luke Melmoth ◽  
Lindsey Yue ◽  
Roman Bader ◽  
Robert Gresham ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Calcium Oxide ◽  
Carbon Dioxide Capture ◽  
Reactor Design ◽  
Reaction Chamber ◽  
Heat Losses ◽  
Radiation Receiver ◽  
Reactor Assembly ◽  
Shock Resistance ◽  
High Flexibility

An engineering design for a novel 1-kW solar-driven reactor to capture carbon dioxide via the calcium oxide-based two-step carbonation–calcination cycle has been completed. The reactor consists of a downward-facing cylindrical dual cavity. The inner cavity serves as the radiation receiver, while the outer cavity is the reaction chamber that contains a packed- or fluidized-bed of reacting particles. Several aspects have been incorporated in this reactor design, including high flexibility, mechanical rigidity and simplicity, high-temperature and thermal shock resistance, accommodation of thermal expansion, low convective heat losses, uniform gas distribution inside the reaction chamber, and simple reactor assembly. The final reactor design is presented, and the reactor assembly is illustrated.

scholarly journals Limestone Clays for Ceramic Industry

2021 ◽  
Author(s):  
Herbet Alves de Oliveira ◽  
Cochiran Pereira dos Santos
Keyword(s):  
Carbon Dioxide ◽  
Calcium Carbonate ◽  
Calcium Oxide ◽  
Ceramic Industry ◽  
Magnesium Carbonate ◽  
Ceramic Tiles ◽  
High Loss ◽  
Loss Of Mass ◽  
Carbon Dioxide Co2 ◽  
Very High

Limestone clays are used in the ceramic segment in the manufacture of bricks, ceramic tiles, and in the production of cement, among others. Limestone can be present in soils in pure form or as a contaminant, but always from marine environments. The limestone after burning can present a high loss of mass (35–45%), which can cause serious problems with the sintering of ceramic products such as bricks, tiles. The calcium or magnesium carbonate once dissociated forms calcium oxide (CaO) and releases carbon dioxide (CO2). CaO in contact with water subsequently experiences very high expansions that can cause cracks in the materials. Researchers have studied procedures to inhibit limestone action on clays as well as to set the correct temperature for firing. In this chapter, examples of clays with different percentages of calcium carbonate (CaCO3) that are used in the ceramic segment and their characteristics will be given.

scholarly journals The Processing of Calcium Rich Agricultural and Industrial Waste for Recovery of Calcium Carbonate and Calcium Oxide and Their Application for Environmental Cleanup: A Review

2021 ◽  
Vol 11 (9) ◽  
pp. 4212
Author(s):  
Virendra Kumar Yadav ◽  
Krishna Kumar Yadav ◽  
Marina M. S. Cabral-Pinto ◽  
Nisha Choudhary ◽  
Govindhan Gnanamoorthy ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Calcium Oxide ◽  
Industrial Waste ◽  
Environmental Cleanup ◽  
Oxide Particles ◽  
Biological Sources ◽  
Egg Shell ◽  
Physical And Chemical ◽  
By Products ◽  
Land Filling

Every year a million tonnes of calcium rich agro and industrial waste are generated around the whole globe. These calcium rich waste like finger citron, shells of cockle, mussel, oysters etc., and egg shell are biological sources which have various organic compounds. The inorganic calcium rich waste includes gypsum, dolomite, sludge etc., which are produced in surplus amount globally. Most of these by-products are mainly dumped, while few are used for land-filling purposes which leads to the pollution. These agro and industrial by-products could be processed for the recovery of calcium carbonate and calcium oxide particles by physical and chemical method. The recovery of calcium carbonate and calcium oxide particles from such by products make them biocompatible. Moreover, the products are economical due to their synthesis from waste materials. Here, in this current review work we have emphasized on the all the calcium rich agro industries and industrial by products, especially their processing by various approaches. Further, we have also focused on the properties and application of such calcium carbonate and oxide particles for the remediation of organic and inorganic pollutants from the environments. The recovery of such particles from these byproducts is considered not only economical and eco-friendly but it also minimizes the pollution present in the form of solid waste.

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