Low NOx, high-efficiency multistaged burner: fuel-oil results

Technical Report · Fri May 01 04:00:00 EDT 1987

OSTI ID:6179346

Mulholland, J A; Srivastava, R K

This paper discusses the fuel-oil portion of an evaluation, utilizing a multistaged combustion burner designed for in-furnace NOx control and high combustion efficiency, for high nitrogen-content fuel and waste-incineration application in a 0.6-MW package boiler simulator. A low-NOx precombustion chamber burner was reduced in size by about a factor of two (from 600 to 250 ms first-stage residence time) and coupled with (1) air staging, resulting in a three-stage configuration, and (2) natural gas fuel staging, yielding up to four stoichiometric zones. Natural gas, doped with ammonia to yield a 5.8% fuel nitrogen content, and distillate fuel oil, doped with pyridine to yield a 2% fuel nitrogen content, were used to simulate high nitrogen content fuel/waste mixtures. The multistaged burner reduced NO emissions by 85% from emission levels from a conventional unstaged burner mounted on a commercial package boiler. A minimum NO emission level of 110 ppm was achieved in the fuel-oil tests, from a level of 765 ppm for conventional firing.

• Research Organization: Acurex Corp., Research Triangle Park, NC (USA)
• OSTI ID: 6179346
• Report Number(s): PB-87-196788/XAB
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION ABATEMENT
BOILERS
BURNERS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION PRODUCTS
CONTROL
DESIGN
FUEL OILS
FUELS
LIQUID FUELS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
PETROLEUM PRODUCTS
POLLUTION ABATEMENT
STAGED COMBUSTION
THERMOCHEMICAL PROCESSES