Use of alpha-amino ethers for the removal of hydrogen sulfide from hydrocarbons

a technology of alpha-amino ethers and hydrocarbons, which is applied in the treatment of hydrocarbon oils, organic chemistry, chemistry apparatus and processes, etc., can solve the problems of significant mixing and achieve the effect of reducing the amount of hydrogen sulfide released

Inactive Publication Date: 2012-01-19
NALCO CO
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

These prior art attempts however are frequently water-based chemicals and require significant mixing to allow the scavenger to effectively contact the hydrocarbon fluid and remove the hydrogen sulfide.

Method used

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  • Use of alpha-amino ethers for the removal of hydrogen sulfide from hydrocarbons
  • Use of alpha-amino ethers for the removal of hydrogen sulfide from hydrocarbons

Examples

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examples

[0032]The foregoing may be better understood by reference to the following example, which is presented for purposes of illustration and is not intended to limit the scope of the invention.

[0033]Samples of hydrocarbon fluids were tested to determine the efficiency of the scavenger. Table 1 compares the inventive composition in naphtha at 22 degrees C., Table 2 kerosene at 22 degrees C., and Table 3 slurry oil (such as carbon black oil, decant oil, and clarified slurry oil produced in a refinery) at 97 degrees C. The samples contained variable levels of hydrogen sulfide and were comparatively treated with various dosages of alpha-amino ether scavenger or left untreated, and the amounts H2S reduced in each sample was recorded.

Table 1: Naphtha 22° C.H2Slevlesppm H2SPercentDoseTreatment(ppm)ReducedReductionRatioTimeUntreated800Compounds A-C2078097.50.22 hCompounds A-C679499.20.32 hCompounds A-C379799.60.224 hCompounds A-C>79999.90.324hCompounds A-C12 788 98.5 0.22 h(4)(796)(99.5)(24 h)Ta...

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Abstract

The invention provides a method of removing hydrogen sulfide from hydrocarbon fluids. The method involves using an alpha-amino ether as a hydrogen sulfide scavenger. This allows for the introduction of an oil soluble scavenger in lieu of water-soluble scavengers.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]None.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not Applicable.BACKGROUND OF THE INVENTION[0003]This invention relates generally to the treatment of sour gas and liquid hydrocarbon to remove or reduce the levels of hydrogen sulfide therein. The toxicity of hydrogen sulfide in hydrocarbon fluids is well known in the industry. This has caused considerable expense and efforts to be expended annually to reduce its content to a safe level.[0004]In large production facilities, it is generally more economical to install a regenerative system for treating sour gas streams. These systems typically employ a compound used in an absorption tower to contact the produced fluids and selectively absorb the hydrogen sulfide and possibly other toxic materials such as carbon dioxide and mercaptans. The absorption compound is then regenerated and reused in the system. Typical hydrogen sulfide absorption materials include alkanolamin...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10G29/20
CPCC10G29/20C10G2300/207C10G2300/202C07C7/152C10G29/00
Inventor COMPTON, DENNIS R.STRICKLAND, J. BYRONGARCIA, III, JUAN M.
Owner NALCO CO
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