The principle characteristic of low nitrogen burner is analysed

Low nitrogen burner reachs burner of low nitrogen oxide, it is the burner with small discharge capacity of the nitrogen in pointing to fuel combustion process, choose low nitrogen burner to be able to drop of oxide of the nitrogen in combustion process discharge. The oxide of the nitrogen that breaks out in combustion process is principal for NO and NO2, connect the oxide of these two kinds of nitrogen commonly call the oxide that it is nitrogen nitrogen. A lot of test results make clear, the azotic oxide that combustion facilities discharges is principal for NO, occupy about equably 95% , and NO2 is occupied only 5% the left and right sides.

The NO that place of general fuel combustion generates is principal come from two respects: It is combustion place uses air (combustion air) in oxidation; of nitrogen 2 it is the place in fuel contain nitride to be in combustion process hot become divided oxidizes again. In most combustion facilities, former the principal source that is NO, we call this kind of NO " hot reaction NO " , latter says for " fuel NO " , other still have " twinkling sends NO " . It is OK that the place when combustion forms NO with the atom that contain nitrogen semifinished product reaction makes NO reductive into NO2. React besides these on practice outside, NO is OK still with all sorts of containing nitrification content generates NO2. In carrying out combustion facilities reaction reachs chemical equilibrium when, [NO2]/[NO] proportion is very small, namely NO change is NO2 very few, OK and unwary. Drop nitrogen of combustion mastery of a skill or technique is broken out by combustion, and combustion method and combustion condition are right of nitrogen generate have bigger effect, can drop consequently through improving combustion technical ability nitrogen, its are principal the approach is as follows: Choose the fuel with N inferior content, include fuel to take off nitrogen and change to drop into; of low nitrogen fuel air is superfluous coefficient, had organized thick combustion, will drop the chroma; of oxygen is all round fuel below the state of affairs with little excess air, degree of peak value drops in temperature below in order to decrease " hot reaction NO " ; in oxygen chroma inferior circumstance falls, the hour that adds combustible to stay in the peak before blaze and response division. Reduce nitrogen form and discharge the specific method that uses commonly to be: Classification combustion, recrudescent burn combustion of law, low oxygen, shade accident combustion and flue gas recycle to wait.

2, classification

1, heavy oil burner, burner burning gas and double fuel burner (light oil / burn gas or heavy oil / ) burning gas.

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