Dow Global Technolgoies LLC

General Electric Technology Gmbh

Ross E Dugas

Jonathan W Leister

Zubin B Kuvadia

Preshit Dandekar

Stephen A Bedell

Christophe R Laroche

Frederic Vitse

Barath Baburao

Ajay N Badhwar

Nareshkumar B Handagama

German A Oliveros Patino

Johnathan W Leister

The present invention provides strategies to integrate adsorption and liquefaction techniques to separate hydrocarbon feed mixtures into purified light and heavy components, respectively. Initially, the hydrocarbon stream is separated into a light and heavy stream. The light stream can be integrated into a natural gas product. The heavy stream is partially liquefied. A first gas liquid separation of the partially liquefied heavy stream at an elevated pressure separates the liquid heavy stream from a methane-containing gas. The rejected methane component, which generally will include some rejected C2 and C3+ material, can be recycled to be combined with the feed mixture for re-processing. A further aspect of the strategy is then to practice at least one additional gas-liquid separation of the separated liquid heavy stream at a lower pressure effective to help further resolve the liquid heavy stream from C2-containing gas. The rejected C2 component, which generally will include some rejected C1 and C3+ material, can then be recycled back into the feed mixture for reprocessing or used as all or a portion of a light hydrocarbon product.

Methods and systems to separate hydrocarbon mixtures such as natural gas into light and heavy components

The present invention integrates adsorption and liquefaction techniques to separate hydrocarbon feed mixtures into light and heavy components. A feed is partially liquefied in two or more stages. A first stage occurs at higher pressure. A second stage occurs at lower pressure. At each stage, gas and liquid components are separated. The separated heavy components resulting from liquefaction provide a purified natural gas liquid product. The separated gas components may be further processed and/or handled to provide purified natural gas. Heavy streams resulting from the further processing of the separated gas streams may be recycled and incorporated into the feed mixture. By using separate liquefaction stages at different pressures to favor C1 and then C2 separation from the heavy stream, a natural gas liquid product with high C3+ purity results.

A system for the removal of heat stable amine salts from an amine absorbent used in a carbon dioxide (CO) capture process.

System for the removal of heat stable amine salts from an amine absorbent

The present invention relates to an aqueous alkanolamine solution and use therein a process for the selective removal of hydrogen sulfide from gaseous mixtures comprising hydrogen sulfide. The aqueous alkanolamine solution consists of &#x2014;an amino compound with the formula: RRNCHCH(OH)CHOH wherein Rand Rindependently represent methyl, ethyl, propyl or isopropyl groups &#x2014;and bis(2-hydroxyethyl)methylamine, &#x2014;optionally one or more of a physical solvent, an antifoaming agent, an antioxidant, a corrosion inhibitor, a film former, a chelating agent or a pH adjuster and &#x2014;water The process for selectively removing hydrogen sulfide, comprising the step of contacting the gaseous mixture with the aqueous alkanolamine solution, preferably wherein the temperature of the aqueous alkanolamine solution is equal to or greater than 140&#xb0; F.

Aqueous alkanolamine composition and process for the selective removal of hydrogen sulfide from gaseous mixtures

Disclosed is an improved process for recovering condensable components from a gas stream, in particular, hydrocarbons from a gas stream such as natural gas. The present process uses solid adsorbent media to remove said hydrocarbons wherein the adsorbent media is regenerated in a continuous fashion in a heated continuous counter-current regeneration system, wherein said heated regenerated adsorbent media is cooled prior to reuse.

Temperature controlled adsorption process for recovering condensable components from a gas stream

Disclosed is an improved process for regenerating solvent used to remove contaminants from a fluid stream. Said process comprises a solvent regeneration system () comprising a rich/lean solvent stripper column (), reboiler (), condenser (), and reflux receiver () wherein the improvement is the locationof the condensed stripper gas return from the reflux receiver.

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Lake Jackson, TX, United States of America

Ross E Dugas