Process for separating sulfur compounds from flue gases

US5238666A · kind A · utility

Assignee

• Oy Tampella AB · FI

Inventor

• Pentti Janka · Tampere, FI

Key dates

• Filing date: Aug 15, 1991
• Grant date: Aug 24, 1993
• Expiry date: Aug 15, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04C2009/002
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for desulfurization of fuel combustion gases and a new reactor wherein the primary flue gas stream containing sulfur oxides and alkaline oxide solids flows into the reactor vessel. A plurality of baffle columns is positioned at the top of the reactor vessel which serve to separate the primary stream into a plurality of first streams containing substantially all of the alkaline oxide solids and a plurality of second streams comprising substantially solids-free gas. The first streams are wetted after which they recombine with the second streams to produce reaction product sulfates and sulfites. The reaction product is substantially dry because the hot second streams cause evaporation of substantially all of the moisture from the wetted first streams.