1. The stage incinerator is based on the stage incinerator planned by the principle of staged incineration, so that the fuel and atmosphere are burned in sections. Because the incineration deviates from the surface equivalence ratio, the production of NOx can be reduced.
2. One is to use the pressure head of combustion supporting atmosphere to suck back the one-sided combustion flue gas into the incinerator and burn it with the atmosphere. Because the flue gas is recycled, the heat capacity of the incineration flue gas is large, the incineration temperature is low, and NOx is reduced. Another kind of self recycling incinerator is to simply recycle the one-sided flue gas in the incinerator and bring it into the incineration process. This kind of incinerator has the dual results of nitrogen oxide suppression and energy saving.
3. The principle of the thick thin incinerator is to make one side of the fuel burn too thick and the other side of the fuel burn too thin, but the overall atmosphere is fixed. Because both sides are burned with deviation from the chemical equivalent ratio, NOx is very low. This kind of incineration is also called deviation incineration or non chemical equivalent incineration.
4. According to the principle of flame type incinerator, one flame is divided into several small flames, because the small flame has large heat dissipation area and low flame temperature, which makes "thermal feedback no" drop. In addition, the flame slightly shrinks the pause time of oxygen, nitrogen and other gases in the flame, which has an obvious inhibitory effect on "thermal feedback no" and "fuel no".
5. The pause time of the flue gas in the high temperature area of the mixed excited incinerator is one of the important components affecting the production of NOx. The improvement of the mixture of incineration and atmosphere may reduce the thickness of the flame surface. Under the environment of fixed incineration load, the flue gas stops the contraction of photocathy in the flame surface, i.e. the high temperature area, thus reducing the production of NOx. The mixed excited incinerator is planned according to this principle.
6. Low NOx precombustion chamber incinerator precombustion chamber is a high obedience and low NOx staged incineration technology developed in recent 10 years in China. The precombustion chamber is generally composed of primary air (or secondary air) and fuel radiation system. The fuel and primary air are mixed rapidly, causing fuel rich inclusions in the primary combustion area of the precombustion chamber. Because of lack of oxygen, only one-sided fuel is burned, and the fuel is poor in oxygen And the volatiles in the primary flame area with lower flame temperature can reduce the production of NOx.
——Author：ebico