Process for using biogenic carbon dioxide derived from non-fossil organic material

摘要

The present disclosure provides a process for forming a biogenic carbon-based fuel or a fuel intermediate from biogenic carbon dioxide and hydrogen. The hydrogen is sourced from a process that produces hydrogen and fossil carbon dioxide from a fossil-fuel hydrocarbon and separates the fossil carbon dioxide from the hydrogen. The process may further comprise carrying out or arranging for one or more parties to carry out at least one step that contributes to a reduction in the GHG emissions of the biogenic carbon-based fuel, or a fuel made from the fuel intermediate, of at least 20% relative to a gasoline baseline. In various embodiments this includes (a) introducing the fossil carbon dioxide underground, and/or (b) using a biogenic carbon-based product selected from a chemical and energy product produced from the non-fossil organic material to displace the use or production of a corresponding fossil-based product. Methods of using the present invention to enable fuel credit generation are also described.

主权项

1. A process for using biogenic carbon dioxide derived from non-fossil organic material for fuel production comprising:
(i) providing biogenic carbon dioxide that is sourced from a production process comprising a step of fermentation; (ii) providing a stream enriched in hydrogen that is sourced from a hydrogen production process comprising the steps of:
(a) converting fossil methane to carbon monoxide and hydrogen by reforming;(b) converting at least a portion of the carbon monoxide by a water-gas shift reaction to carbon dioxide, thereby producing a stream comprising carbon dioxide and hydrogen, and(c) separating at least a portion of the hydrogen from the stream of step (b) from non-hydrogen components to produce the stream enriched in hydrogen, which stream contains a molar ratio of hydrogen to both fossil carbon monoxide and carbon dioxide of greater than 4:1; (iii) converting the biogenic carbon dioxide from step (i) and hydrogen produced in step (ii)(c) to a biogenic carbon-based fuel or fuel intermediate; and (iv) carrying out or arranging for one or more parties to carry out at least one step that contributes to a reduction in the life cycle GHG emissions of a fuel or a fuel made from a fuel intermediate produced by the process, wherein the life cycle GHG emissions of the fuel are at least 20% lower than a gasoline baseline as determined b EPA methodology, said at least one step selected from:
(a) introducing at least a portion of fossil carbon dioxide recovered from one or more streams comprising fossil carbon dioxide generated during said hydrogen production process into an apparatus for transporting carbon dioxide, withdrawing carbon dioxide from said apparatus and introducing the withdrawn carbon dioxide underground, and(b) using at least a portion of a product produced in the production process of step (i) selected from a chemical and energy product to displace the use or production of a corresponding fossil-based product.