Method of and a scrubber for removing pollutant compounds from a gas stream

US9533257B2 · kind B2 · utility

Assignee

• Amec Foster Wheeler Energia, S.L.U. · FI

Inventors

• Winfried Gutperl · Burghaun, DE
• Rolf Graf · Königstein, DE
• Harald Kessler · Bad Homburg vor der Höhe, DE
• Reijo Kuivalainen · Varkaus, FI

Key dates

• Filing date: Jan 31, 2014
• Grant date: Jan 3, 2017
• Expiry date: Jan 31, 2034

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2258/0291
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A scrubber for removing pollutant compounds from a gas stream. At least one gas channel introduces the gas stream to a lower portion of the scrubber. An inlet chamber directs the gas stream upwards to form a vertical gas stream. A constriction section has a vertical axis of symmetry and includes a centrally arranged venturi nozzle, and is above and in flow connection with an upper end of the inlet chamber for accelerating the vertical gas stream. A reaction chamber is arranged above and in flow connection with the constriction section. A reagent in the reaction chamber converts pollutant compounds in the gas stream to reaction products. A discharge channel in flow connection with the reaction chamber discharges gas and particles including the reaction products from the reaction chamber. A particle separator separates particles from the gas. A return channel recycles a portion of the particles to the reaction chamber.