Systems and methods of storing combustion waste products
AssigneesChina University of Mining and Technology, The University of North Carolina at Charlotte
InventorsShen-En Chen, Peng Wang, Xiexing Miao, Qiyan Feng, Qianlin Zhu
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Abstract
In one aspect, methods of storing one or more combustion waste products are described herein. Combustion waste products stored by a method described herein can include solid combustion waste products such as coal ash and/or gaseous combustion products such as carbon dioxide. In some embodiments, a method of storing carbon dioxide comprises providing a carbon dioxide storage medium comprising porous concrete having a macroporous and microporous pore structure and flowing carbon dioxide captured from a combustion flue gas source into the pore structure of the porous concrete.
Claims19
A method of storing carbon comprising:
- providing a carbon dioxide storage medium comprising porous concrete having a macroporous and microporous pore structure;
- and
- flowing carbon dioxide captured from a combustion flue gas source into the pore structure of the porous concrete,
- wherein the porous concrete has a porosity of about 10 percent to about 70 percent and comprises macropores having a diameter between about 200 μm and about 800 μm and micropores having a diameter between about 100 nm and about 20 μm.
A method of backfilling comprising disposing a backfill material in a void to at least partially fill the void, the backfill material comprising:
- porous concrete having a macroporous and microporous pore structure and carbon dioxide residing within the porous concrete in an amount greater than 1 weight percent of the porous concrete,
- wherein the porous concrete has a porosity of about 10 percent to about 70 percent and comprises macropores having a diameter between about 200 μm and about 800 μm and micropores having a diameter between about 100 nm and about 20 μm.
Dependencies are inferred from the claim text.