Ecolab USA Inc.

Nalco Company

Dennis R Compton

Kim R Smith

Joseph L Stark

Kim R Solomon

Nestor U Soriano, Jr

Kekeli Ekoue-Kovi

Kim B Peyton

Ron Sharpe

Samuel Jefferies

Nestor U Soriano

A composition of co-polymers, surfactants and solvents is provided for use in methods of reducing paraffin and wax deposition from crude oils in storage and transportation vessels.

Composition and method for dispersing paraffins in crude oils

The present invention generally relates to compositions and methods for scavenging hydrogen sulfide and/or mercaptans from fluids. More particularly, the invention relates to the use of amino acetal and ketal compounds as a hydrogen sulfide or a mercaptan scavenger for hydrocarbon fluids, particularly for natural gas, crude oil, field oil, fuel oil, naphtha, gasoline, kerosene, diesel, refinery gas, coal gas, tar, asphalt, coke gas, ammonia synthesis gas, gas from a sulfurization plant, or industrial gas streams.

Amino acetals and ketals as hydrogen sulfide and mercaptan scavengers

The invention provides a method of removing sulfides from viscous petroleum streams such as asphalt, crude oil, and oil slurry using zinc octoate in which the molar ratio of zinc complexed with octanoic acid is not 1:2. Because zinc has a +2 charge and carboxylic acid has a &#x2212;1 charge, it was previously assumed that all zinc octoates must have a 1:2 ratio of zinc moieties to carboxylic acid. Zinc octoate formulations however, that contain a non 1:2 ratio, and those with 2.1:3 to 1.97:3 in particular, have in fact been shown to work better. In addition, these non 1:2 formulations have lower viscosity and therefore are easier to use than the previous formulations including a 1:2 ratio.

Method of removing hydrogen sulfide

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Sugar Land, TX, United States of America

Dennis R Compton