Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1988-02-25
1989-06-13
Doll, John
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
204174, 423239, 423242, 423244, C01B 1700, C01B 2100, B01J 800
Patent
active
048391476
ABSTRACT:
In order to achieve the removal of SO.sub.2 and NO.sub.x together with the entrained dust from the combustion product gases discharged from the combustion chamber of a steam generator in which sulfur-containing fuel, such as for instance lignite or brown coal is being burned, NH.sub.3 and/or NaHCO.sub.3 or chemical substances which release these compounds or react with the combustion product gases to form these compounds are introduced into the already partially cooled combustion product gases in the temperature region below 500.degree. C. upstream of a dry separator, such as for instance a cloth filter. The entrained ashes are to contain CaO or Ca(OH).sub.2 and/or Na.sub.2 CO.sub.3, especially from a previous desulfurization unit, prior to the introduction of the NH.sub.3 thereinto.
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patent: 4442080 (1984-04-01), Donnelly et al.
patent: 4481172 (1984-11-01), Lowell et al.
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Glasner Alfred
Lindbauer Ralf
Doll John
Freeman Lori S.
Waagner-Biro Aktiengesellschaft
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