Method for separating C5-C8 hydrocarbons and acid gases from a fluid stream

US10864477B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Torsten Katz · Ludwigshafen am Rhein, DE
• Ralf Notz · Ludwigshafen, DE
• Andreas Kern · Roth, DE

Key dates

• Filing date: Feb 2, 2017
• Grant date: Dec 15, 2020
• Expiry date: Aug 24, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02C20/40
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for removing C5-C8-hydrocarbons and acid gases from a fluid stream is described, where a) the fluid stream is brought into contact with an absorption medium comprising at least one amine in an absorption zone to obtain a deacidified fluid stream and an acid-gases-laden absorption medium, b) the laden absorption medium is heated in a first heat exchanger and decompressed into a decompression zone to a pressure of from 5 to 10 bar to obtain a C5-C8-hydrocarbons-comprising gas phase and a hydrocarbon-depleted laden absorption medium, c) the hydrocarbon-depleted laden absorption medium is heated in an optional second heat exchanger and passed into a stripper in which at a pressure of 1 to 2.5 bar the acid gases are at least partially liberated by supplying heat to obtain a regenerated absorption medium and an acid-gas-comprising stream, and d) the regenerated absorption medium is recycled into the absorption zone.