Low Nox BurnerMarch 21, 2011 11:36 pm
Ship and Shore Environmental will be using Low Nox Burners for all it’s combustion Equipment!
What is NOx and where does it come from?
NOx (often written NOx) refers to NO and NO2. They are produced during combustion especially at high temperature. These two chemicals are important trace species in Earth’s atmosphere.
NOx is generated from both air (N2) and fuel components in high temperature . It is very hard to extract nitrogen originating from the fuel without oxidizing it or forming lots of soot.
Why is NOx harmful for the environment?
These compounds play an important role in the atmospheric reactions that create harmful particulate matter, ground-level ozone (smog) and acid rain. NOx emissions also contribute to a suite of year-round environmental problems, from acid rain in the mountain regions to eutrophication (the buildup of nutrients in coastal estuaries), leading to oxygen depletion that degrades water quality and harms fish. NOx emissions also contribute to haze air pollution in our national parks and wilderness areas.
What are the regulations?
EPA first set standards for NO2 in 1971, setting both a primary standard (to protect health) and a secondary standard (to protect the public welfare) at 0.053 parts per million (53 ppb), averaged annually. The Agency has reviewed the standards twice since that time, but chose not to revise the standards at the conclusion of each review. All areas in the U.S. meet the current (1971) NO2 standards. (EPA web site).
How do Low NOx Burners Work?
Avoiding hot spots or intense flames that are coupled with lean zones by changing the shape and formation of the flame by using plates to control airflow, a more elongated flame is created in the burner. The temperature is decreased due to the extended flame and surface area, and the lower temperature reduces the amount of thermal NOx.
Ship & Shore will be using advanced mixing technology with the burner, the burner produces low emissions with very little excess air. Ruggedly built with a reinforced refractory block and steel burner body and nozzle, it burns natural gas, propane or other gaseous fuels. Combustion air is supplied with an external blower. Accurate air and fuel modulation can be accomplished by the MICRO-RATIO valve . The same burner, when adjusted for on-ratio operation, will give low CO and high thermal efficiency.
Categorised in: Air pollution