Removal of nitric oxide from exhaust gas with cyanuric acid--

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Combustion and Flame; (USA)

DOI:https://doi.org/10.1016/0010-2180(90)90086-7· OSTI ID:7173904

Siebers, D L ^[1]; Caton, J A ^[2]

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1. Sandia National Labs., Livermore, CA (USA). Combustion Research Faclity
2. Texas A and M Univ., College Station, TX (USA). Dept. of Mechanical Engineering

Addition of gaseous isocyanic acid (HNCO) to the exhaust of combustion systems or chemical process is proposed as a method for reducing nitric oxide (NO) emissions. The HNCO selectively reduces NO in the exhaust through a multistep chemical reaction mechanism. This article presents an experimental investigation of the proposed NO reduction process using cyanuric acid as the source of HNCO. At elevated temperature cyanuric acid decomposes and forms HNCO. The effects of temperature, exhaust gas composition, cyanuric acid concentration (i.e., HNCO concentration), and surfaces were examined. The experiments were conducted in an electrically heated quartz flow reactor using either exhaust from a diesel engine or simulated exhaust gas. The results demonstrate that gas phase NO reduction approaching 100% can be obtained.

• OSTI ID: 7173904
• Journal Information: Combustion and Flame; (USA), Journal Name: Combustion and Flame; (USA) Vol. 79:1; ISSN CBFMA; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330102 -- Internal Combustion Engines-- Diesel
330701* -- Emission Control-- Nitrogen Oxides
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800 -- Combustion
Pyrolysis
& High-Temperature Chemistry
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION ABATEMENT
AZINES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTORS
COMBUSTION CHAMBERS
COMBUSTION PRODUCTS
CYANURATES
DATA
DIESEL ENGINES
DIESEL FUELS
ELEMENTS
ENGINES
EXHAUST GASES
EXPERIMENTAL DATA
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
INFORMATION
INTERNAL COMBUSTION ENGINES
KINETICS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
POLLUTION ABATEMENT
REACTION KINETICS
REMOVAL
TRIAZINES
WASTES
WATER