Development of a combined SO sub 2 /NO sub x removal system

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:5893422

Jelsbak, K; Snader, B ^[1]; Pedersen, J E ^[2]

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1. Elsamprojekt A/S, 7000 Fredericia (DK)
2. NEFO, Vendsysselvaerket, 9310 Vodskov (DK)

At the Danish power plant Skaerbaekvaerket a demonstration plant for the SNOX flue gas cleaning process has been in operation for about 2 1/2 years. The SNOX process is a combined SO{sub 2}/NO{sub x} removal process which has been developed by Haldor Topsoe. In the process 95% of the sulphur and nitrogen oxides in the flue gas can be removed, and the end product is concentrated sulfuric acid with an acid strength of about 95%. The process has four main steps. At first, the dust content of the flue gas is removed in a bag filter. In the second step, NO{sub x} is reduced by selective catalytic reduction by NH{sub 3}. In the third step, SO{sub 2} is oxidized to SO{sub 3} in a catalytic process, and in the last step concentrated sulfuric acid condenses in a glass tube heat exchanger. On the basis of the satisfactory operation experience with the demonstration plant it has been decided to build a full-scale SNOX-plant at a 300 MWe power plant in Denmark.

• OSTI ID: 5893422
• Report Number(s): CONF-901034--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION CONTROL
CHALCOGENIDES
CONTROL
EMISSION
EQUIPMENT
FLUE GAS
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
REMOVAL
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS
WASTES