Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1984-12-21
1987-04-21
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
55 73, C01B 1700, B01D 1900, B01D 3900, B01D 5700
Patent
active
046595538
ABSTRACT:
The invention refers to a process for the removal of undesirable gaseous components from hot flue gases incurred in the combustion of carbonaceous fuels. The flue gas is passed through regenerators for cooling and preliminary cleaning, and subsequently is scrubbed with a physically active solvent for SO.sub.2 absorption. After absorbing SO.sub.2, the solvent is subjected to regeneration and returned to the scrubbing process. For purposes of energy savings, it is suggested to heat exchange the hot flue gas in the regenerators with atmospheric air to cool it to temperatures between 0.degree. and 60.degree. C., and to scrub at this temperature with a solvent consisting predominantly of tetraethyleneglycol dimethylether. The process of the invention permits utilization of the exhaust heat of the flue gas to be purified.
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Heller Gregory A.
Linde Aktiengesellschaft
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