Method for determining a carbon source of a product
AssigneeExxonMobil Chemical Patents Inc.
InventorThomas H. Colle
Life of this patent
Estimating the term…
Abstract
This invention is directed to a method for determining a source of carbon feed used in manufacturing product produced from the carbon feed. The invention further provides a method for tracking products, particularly MTO products, derived from a particular carbon feed. In general, the method involves a variety of steps that include one or more of determining, comparing, inventorying, and tracking the 13C:12C ratio (or HD:H2 ratio) of the product that is being tracked to the measured or predetermined 13C:12C ratio (or HD:H2 ratio) of the feed used to make the product.
Claims11
A method for determining a source of carbon feed used in manufacturing product produced from the carbon feed, comprising:
- providing a feed stream of an oxygenate to an MTO system and contacting the feed stream with an olefin-forming catalyst to form an olefin product;
- providing a sample of the product produced from the carbon feed;
- directly determining 13C:12C ratio of the product by Laser Induced Florescence (LIF) without the need to first convert it to CO2 and/or H2;
- and
- comparing the 13C:12C ratio of the product to a predetermined 13C:12C ratio from the source.
A method for determining a source of carbon feed used in manufacturing product produced from the carbon feed, comprising:
- providing a feed stream of an oxygenate to an MTO system and contacting the feed stream with an olefin-forming catalyst to form an olefin product;
- providing a sample of the carbon feed;
- directly determining 13C:12C ratio of the carbon feed by Laser Induced Florescence (LIF);
- providing a sample of product produced from the carbon feed;
- directly determining 13C:12C ratio of the product by Laser Induced Florescence (LIF) without the need to first convert it to CO2 and/or H2;
- and
- comparing the 13C:12C ratio of the product to the 13C:12C ratio of the carbon feed from the source.
A method for determining a source of carbon feed used in manufacturing polymers, comprising:
- providing a feed stream of the oxygenate to an MTO system and contacting the feed stream with an olefin-forming catalyst to form a polyolefin product;
- providing a sample of the carbon feed;
- directly determining 13C:12C ratio of the carbon in the feed by Laser Induced Florescence (LIF);
- providing a sample of polyolefin produced from the carbon feed;
- directly determining 13C:12C ratio of the polyolefin carbon dioxide by Laser Induced Florescence (LIF) without the need to first convert it to CO2 and/or H2;
- and
- comparing the 13C:12C ratio of the polyolefin to the 13C:12C ratio of the carbon in the feed;
- further comprising tracking the compared product that falls within a range of from ±5% of the determined carbon feed ratio from the source.
Dependencies are inferred from the claim text.