Metal-based hydrogen sulfide scavenger and method of preparing same
AssigneeBaker Hughes Incorporated
InventorsJingshe Song, Zhenning Gu
Life of this patent
Estimating the term…
Abstract
The present disclosure is related to a family of oil-based dispersions of organic and inorganic metal compounds for use as a hydrogen sulfide scavenger in asphalt, and the preparation thereof. These dispersions comprise organic and inorganic metal compounds, organic solvents, an organoclay suspension agent, an emulsifier and optionally a polymeric stabilizer. The organic and inorganic metal compounds are in the form of micron-sized particles. Copper-based dispersions are particularly effective at reducing the hydrogen sulfide emission of asphalt in the presence of polyphosphoric acid.
Claims20
A composition comprising:
- asphalt or asphalt mix;
- and a dispersion of a hydrogen sulfide scavenger in an organic solvent, wherein the dispersion further comprises an organoclay suspension agent and an emulsifier.
A method of preparing a hydrogen sulfide scavenger, the method comprising:
- adding an organo-clay and a surfactant to an oil;
- stabilizing the oil with the organo-clay and the surfactant;
- and
- adding a copper compound to the stabilized oil.
Dependencies are inferred from the claim text.