Methods of purifying gas containing nitrogen oxide, and compositions used therefor

Patent · Tue May 24 00:00:00 EDT 1977

OSTI ID:6697723

Shibata, T; Maki, M; Suzuki, M; Kawabe, H

In removing nitrogen oxide from a gas containing it, the gas is passed through a region where at least one of calcium sulfate and calcium hydroxide coexists with powerful oxidation agents such as sodium chlorite, potassium permanganate, etc. thereby removing the nitrogen oxide, mainly nitrogen monoxide, from the gas. This method is very effective in purifying exhaust gases resulting from burning operations, since 80 to 90 percent or more of the nitrogen oxide contained in the exhaust gases is nitrogen monoxide. In addition, this method is also effective in purifying indoor air.

• Assignee: Matsushita Electric Industrial Co., Ltd.
• Patent Number(s): US 4025603
• OSTI ID: 6697723
• Resource Relation: Patent Priority Date: Priority date 19 Oct 1973, Japan
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
GASES
PURIFICATION
NITROGEN OXIDES
AIR POLLUTION CONTROL
AIR POLLUTION
CALCIUM HYDROXIDES
CALCIUM SULFATES
COMBUSTION
EXHAUST GASES
OXIDATION
POTASSIUM PERMANGANATES
REDOX REACTIONS
SEPARATION PROCESSES
SODIUM COMPOUNDS
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
FLUIDS
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROXIDES
MANGANESE COMPOUNDS
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERMANGANATES
POLLUTION
POLLUTION CONTROL
POTASSIUM COMPOUNDS
SULFATES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
WASTES
424000* - Engineering- Pollution Control Equipment- (1980-1989)