Elf Aquitaine Production

Societe Nationale Elf Aquitaine

Societe Nationale Elf Aquitaine (production)

Total Sa

Elf Exploration Production

Totalenergies Se

Jean-Louis Peytavy

Olivier Oliveau

Philippe Le Coz

Jean Elgue

Serge Capdeville

Georges Fremy

Didier Anglerot

Herve Lacamoire

The invention relates to a process for the purification of a gaseous mixture containing mercaptans and other acid gases comprising a stage of bringing said gaseous mixture into contact with an absorbent solution comprising an alkanolamine, a C-Cthioalkanol and water.

Process for the purification of gaseous mixtures containing mercaptans and other acid gases

A regenerative process for deacidification of a gas containing CO,and liquid hydrocarbons including contacting the gas to be treated, in an absorption zone, with an absorbent liquid including methyldiethanolamine (MDEA) and an accelerator of absorption of CO,by the amine, thereby producing a treated gas with reduced CO,content and an absorbent liquid loaded with CO,, subjecting the loaded absorbent liquid to a regeneration treatment to release CO,which it has bound, to produce 1) at least one acid gas fraction rich in CO,and 2) at least one regenerated absorbent liquid; and recycling into the absorption zone the at least one regenerated absorbent liquid, wherein the overall liquid hydrocarbon content in the gas to be deacidified containing CO,is greater than 14 liters of liquid hydrocarbons per million standard cubic meters of gas, and the activator combined with methyldiethanolamine in the absorbent liquid brought into contact with the gas containing CO,and liquid hydrocarbons consists of at least one compound of formula H,N&mdash;C,H,&mdash;NH&mdash;CH,&mdash;CH,OH in which n represents an integer ranging from 1 to 4.

Regenerative process for the deacidification of a gas containing CO2 and liquid hydrocarbons using an absorbent liquid based on activated methyldiethanolamine

An absorbent liquid having an improved absorption capacity for acidic gaseous compounds due to the presence of an activator of tertiary alkanolamines. The activator is butylmonoethanolamine (BMEA). A process utilizing the absorbent liquid to remove acidic gaseous compounds from a gas.

Liquid absorbent for acidic gases and process of deacidification of a gas

An absorbent liquid for improved absorption capacity for CO.sub.2 in a gas due to the presence of an activator for CO.sub.2 absorbent from the gas, the absorption liquid comprising a mixture of one or more tertiary alkanolamines and an activator of CO.sub.2 absorption by the tertiary alkanolamine, which activator has the general formula Y--(CpH.sub.2p)--NHZ wherein Y is a monovalent radical selected from the group consisting of piperazyl, piperidinyl, furyl, tetrahy-drothienyl and --OR.sub.2 radicals, Z is an R.sub.2 radical or hydrogen, R.sub.2 is a monovalent hydrocarbon residue, and p is an integer from 1 to 6. Also a process for using such absorbent liquid for improved CO.sub.2 absorption from a gas.

Liquid absorbing acidic gases and use thereof in diacidification of gases

Liquid absorbing acid gas compounds presenting an improved CO.sub.2 absorption capacity, said absorbing liquid containing one or a plurality of tertiary alkanolamines and a CO.sub.2 absorption activator. The activator is comprised of at least one amino compound selected among polyalkylene-polyamines, alkylenediamines or cycloalkylenediamines, the aminoalkylated compounds of heterocycles such as piperazine, piperidine, furan, thiophene, tetrahydrofuran and tetrahydrothiophene, the alkoxyalkylamines and the alkylmono-alkanolamines having an alkyl residue in at least C.sub.2. Application of said absorbent liquid to the deacidification of gases containing CO.sub.2 and optionally other acid gas compounds, particularly H.sub.2 S and/or COS.

Liquid absorbing acidic gases and use thereof in deacidification of gases

Liquid absorbing acidic gases and use thereof of in deacidification of

Process and device for selective extraction of H.sub.2 S from an H.sub.2

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Lescar, France

Jean-Louis Peytavy