US 6,190,630 B1 · Flue gas treating process and apparatus

Abstract

This invention provides a flue gas treating process for removing sulfur oxides and dust from exhaust gas containing sulfur oxides and dust by using an absorption tower into which an absorbing fluid containing an alkaline agent is sprayed, comprising the steps of equipping the absorption tower with integrally formed dust collection means comprising dust collecting plates and discharge electrodes, and with dust separation means for sweeping off the dust collected by the dust collection means; and treating the exhaust gas in the dust collection means and subsequently cleaning the exhaust gas in the absorption tower, whereby desulfurization and dust removal are effected while sweeping off the collected dust by the dust separation means. Thus, desulfurization and dust removal can be effected in a simple manner, and the capacity of an electrostatic precipitator installed on the upstream side can be reduced.

Claims3

Dependent claims

A flue gas treating apparatus, comprising:

(i) an absorption tower for desulfurizing exhaust gas containing sulfur oxides and dust,
(ii) a circulation tank for holding an absorbing fluid comprising an alkaline agent, wherein the circulation tank is disposed at the bottom of the absorption tower,
(iii) a dry dust collection means comprising dust collection plates, discharge electrodes and dust separation means for dislodging off dust collected by the dust collection means, wherein said dust collection means is installed in an upper, upstream part within the absorption tower;
and
(iv) a spray means for spraying the absorbing fluid into the absorption tower, wherein said spray means is located downstream of said dust collection means.

2 more elements

Dependencies are inferred from the claim text.

Flue gas treating process and apparatus

Life of this patent

Flue gas treating process and apparatus

Life of this patent

Abstract

Claims3