Carbon dioxide sequestration materials and processes
First Claim
1. A method of removing carbon dioxide from a fluid stream comprising carbon dioxide, the method comprising:
- reducing an amount of carbon dioxide in the fluid stream by contacting the fluid stream with a scrubbing material slurry comprising a first component, a second component, and water, wherein the first component is distinct from the second component, the first component comprises a source of calcium oxide and a source of alkali metal ions, and the second component comprises a slag having one or more reactive silicate compounds.
1 Assignment
0 Petitions
Accused Products
Abstract
The disclosure provides methods and systems for sequestering and/or reducing carbon dioxide present in an industrial effluent fluid stream containing carbon dioxide. A scrubbing material comprising a first component, a second component (distinct from the first component), and preferably water, is contacted with the effluent fluid stream. The first component comprises a source of calcium oxide and a source of alkali metal ions. The second component comprises a slag having one or more reactive silicate compounds. Methods of reducing carbon dioxide from exhaust generated by combustion sources, lime and/or cement kilns, iron and/or steel furnaces, and the like are provided. Carbon dioxide emission abatement systems are also disclosed. Methods of recycling industrial byproducts are further provided.
98 Citations
75 Claims
-
1. A method of removing carbon dioxide from a fluid stream comprising carbon dioxide, the method comprising:
reducing an amount of carbon dioxide in the fluid stream by contacting the fluid stream with a scrubbing material slurry comprising a first component, a second component, and water, wherein the first component is distinct from the second component, the first component comprises a source of calcium oxide and a source of alkali metal ions, and the second component comprises a slag having one or more reactive silicate compounds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
-
30. A carbon-dioxide sequestration material slurry for scrubbing carbon-dioxide from a carbon-dioxide containing fluid stream, the slurry comprising:
-
a first component comprising one or more materials selected from the group consisting of;
cement kiln dust, lime kiln dust, sugar beet lime, clinker dust, quick lime, slaked lime, and mixtures thereof;a second component comprising a slag having a source of reactive silicates; and water, wherein the slurry comprises particles having an average maximum particle size of less than or equal to about 500 μ
m and an average surface area of greater than or equal to about 1000 cm2/g. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
-
-
40. A carbon-dioxide sequestration material in the form of a slurry for scrubbing carbon-dioxide from a carbon-dioxide containing fluid stream, the slurry comprising:
-
a first component comprising cement kiln dust (CKD); a second component comprising a slag having a source of reactive silicates; and water, wherein the slurry comprises particles having an average maximum particle size of less than or equal to about 500 μ
m and an average surface area of greater than or equal to about 1000 cm2/g. - View Dependent Claims (41, 42)
-
-
43. A carbon-dioxide emission abatement system comprising:
a reaction chamber having a fluid inlet, a slurry inlet, a mixing zone, a fluid outlet, and a slurry outlet;
wherein a carbon-dioxide containing effluent stream is in fluid communication with the reaction chamber and is introduced to the reaction chamber via the fluid inlet;
a source of slurry is in fluid communication with the reaction chamber and a slurry from the source of slurry is introduced to the reaction chamber via the slurry inlet;
the mixing zone provides turbulent mixing of the slurry and the effluent stream;
wherein the reaction chamber has a volume that provides a sufficient residence time to treat the effluent stream to reduce an amount of carbon dioxide by at least about 30%;
wherein the slurry comprises a first component comprising a source of calcium oxide and a source of alkali metal ions, a second component comprising a slag having a source of reactive silicates, and water; and
wherein a spent slurry and/or a calcium carbonate product is removed from the reaction chamber via the slurry outlet.- View Dependent Claims (44, 45, 46, 47)
-
48. A method of reducing carbon dioxide emissions from a cement manufacturing facility, the method comprising:
-
reacting a cement manufacturing raw material to produce clinker and an effluent stream comprising carbon dioxide; contacting at least a portion of the effluent stream with a carbon dioxide scrubbing material slurry comprising a first component, a second component distinct from the first component, and water, wherein the first component comprises a source of calcium oxide and a source of alkali metal ions, the second component comprises a slag having one or more reactive silicate compounds, and generating a product comprising calcium carbonate and a spent scrubbing composition. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56)
-
-
57. A method of reducing carbon dioxide emissions from a cement and/or lime manufacturing facility, the method comprising:
-
contacting a scrubbing material slurry with at least a portion of an effluent stream comprising carbon dioxide that is generated in a kiln, wherein the scrubbing material slurry comprises a first component, a second component distinct from the first component, and water, wherein the first component comprises a source of calcium oxide and a source of alkali metal ions, the second component comprises a slag having one or more reactive silicate compounds; and generating a product comprising calcium carbonate and a spent scrubbing composition; and re-using the calcium carbonate as a raw material in the kiln. - View Dependent Claims (58, 59)
-
-
60. A method of reducing carbon dioxide emissions from an iron and/or steel manufacturing facility, the method comprising:
-
contacting a scrubbing material slurry with at least a portion of an effluent stream comprising carbon dioxide that is generated in a furnace of an iron and/or steel manufacturing process, wherein the scrubbing material slurry comprises a first component, a second component distinct from the first component, and water, wherein the first component comprises a source of calcium oxide and a source of alkali metal ions, the second component comprises a slag having one or more reactive silicate compounds; and generating a product comprising calcium carbonate that is capable of reuse as a raw material in an industrial process. - View Dependent Claims (61, 62, 63, 64, 65)
-
-
66. A method of reducing carbon dioxide emissions from a hydrocarbon fuel combustion source, the method comprising:
-
contacting a scrubbing material slurry with at least a portion of an effluent stream comprising carbon dioxide that is generated in a combustion chamber, wherein the scrubbing material slurry comprises a first component, a second component distinct from the first component, and water, wherein the first component comprises a source of calcium oxide and a source of alkali metal ions, the second component comprises a slag having one or more reactive silicate compounds; and generating a product comprising calcium carbonate that is capable of reuse as a raw material in an industrial process. - View Dependent Claims (67, 68, 69)
-
-
70. A method of recycling industrial byproducts comprising:
-
admixing a first manufactured component comprising a source of calcium oxide and a source of alkali metal ions with a second manufactured component that comprises a slag having one or more reactive silicate compounds to form a scrubbing slurry material; contacting an effluent stream generated in an industrial process that comprises carbon dioxide with the scrubbing material slurry; and generating a product comprising calcium carbonate that is capable of reuse in an industrial process. - View Dependent Claims (71, 72, 73, 74, 75)
-
Specification