Compositions and Methods for Delivery of Carbon Dioxide
AssigneeCarboncure Technologies Inc.
InventorsDean Paul Forgeron, Joshua Jeremy Brown, George Sean Monkman, Paul J. Sandberg
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Abstract
Compositions and methods are provided for a system in which liquid carbon dioxide, or a mixture of liquid and gaseous carbon dioxide, is converted to solid carbon dioxide by exiting an orifice at a sufficient pressure drop, e.g., for delivery of carbon dioxide to a concrete mixture in a mixer.
Claims26
1-28. (canceled)
An apparatus for delivering carbon dioxide to a concrete mixer at a concrete facility_comprising
- (i) a delivery line through which flows gaseous carbon dioxide, liquid carbon dioxide, or a combination of gaseous and liquid carbon dioxide, wherein the orifice comprises a proximal end and a distal end, and wherein the proximal end of the delivery line is connected to a source of liquid carbon dioxide;
- (ii) an orifice at the distal end of the delivery line, through which the carbon dioxide exits from the delivery line, wherein the diameter of the delivery line as it joins the orifice is Dp and the diameter of the orifice is Do, and wherein Do is less than Dp, and wherein the orifice is configured to convert liquid carbon dioxide to a mixture of solid and gaseous carbon dioxide;
- (iii) a conduit leading from the orifice to the concrete mixer, wherein at least a portion of the conduit is flexible, and wherein an opening of the conduit into the concrete mixer is positioned to apply the mixture of solid and gaseous carbon dioxide to a particular location in the mixer.
A method of carbonating a flowable concrete mix comprising delivering carbon dioxide to the concrete mix via a carbon dioxide delivery system;
- wherein the carbon dioxide is delivered as a mixture of gaseous and solid carbon dioxide for at least part of the delivery time, and wherein the carbon dioxide is delivered by a method comprising
- (i) the carbon dioxide is delivered via a delivery line with diameter Dp through an orifice with diameter Do to a conduit attached to the orifice, and through the conduit to the concrete mix, wherein Do is less than Dp, and wherein at least a portion of the conduit is flexible;
- (ii) carbon dioxide is supplied to the delivery line by flowing pressurized gaseous carbon dioxide to the delivery line via a carbon dioxide gas line and/or flowing pressurized liquid carbon dioxide to the delivery line via a carbon dioxide liquid line, so that at least part of the carbon dioxide reaching the orifice during delivery of the carbon dioxide to the concrete mix is liquid carbon dioxide, and
- (iii) the carbon dioxide exits the orifice as a mixture of gas and solid, and is directed via the conduit to the concrete as a mixture of gas and solid.
A method comprising delivering a dose of carbon dioxide to a concrete mix in a truck at a concrete batching facility in a carbon dioxide delivery process, wherein the delivery process does not prolong the average time that the truck remains in the batching facility, compared to a truck that does not receive a dose of carbon dioxide, by more than 10 minutes.
A system for delivering carbon dioxide to a drum of a ready-mix truck comprising
- (i) a flexible conduit comprising a proximal end and a distal end, wherein the conduit is configured to be operably connected to a source of carbon dioxide at its proximal end for delivery of the carbon dioxide from its distal end to a drum of a ready-mix truck;
- (ii) a positioning system for the conduit, wherein the positioning system is configured so as to direct the carbon dioxide to a particular location in the drum of the ready-mix truck.
Dependencies are inferred from the claim text.