Method for operating a flue gas desulfurization

Patent · Tue Feb 01 00:00:00 EST 1983

OSTI ID:6419584

Karger, R; Weinzierl, K

A method of operating a flue gas desulfurization with a steam power plant heated with fossil fuels. The sulfur dioxide contained in the flue gas is removed in a wash tower by means of an excess of milk of lime or limestone, and the resulting sulfite is oxidized with air at a low ph-value into calcium sulfate. The non-converted milk of lime or limestone is neutralized at least partially by an addition of acid waste waters from a complete desalination plant for the supply water, and/or by an addition of acid condensate from the flue or chimney of the steam power plant. An installation for carrying out the method of the present invention includes a wash tower having flue gas flowing therethrough, an oxidation tower having air flowing therethrough, milk of lime or limestone supply into the wash tower, and a delivery device for the wash liquid in the wash tower and in the oxidation tower, with the device having a pump for liquid drawn off from the sump of the wash tower. The sump of the wash tower is connected with a supply line for acid waste water from a complete desalination plant, and/or with a supply line for acid condensate from the chimney or flue of the steam power plant.

• Assignee: EDB-83-090673
• Patent Number(s): US 4371508
• OSTI ID: 6419584
• Resource Relation: Patent Priority Date: Priority date 27 Oct 1979, Germany, Federal Republic of (F.R. Germany); Other Information: PAT-APPL-200973
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
FLUE GAS
DESULFURIZATION
FOSSIL-FUEL POWER PLANTS
OPERATION
LIME-LIMESTONE WET SCRUBBING PROCESSES
OXIDATION
PH VALUE
WASTE WATER
CHEMICAL REACTIONS
GASEOUS WASTES
HYDROGEN COMPOUNDS
LIQUID WASTES
OXYGEN COMPOUNDS
POWER PLANTS
SCRUBBING
THERMAL POWER PLANTS
WASTES
WATER
010800* - Coal
Lignite
& Peat- Waste Management