How to reduce the combustion temperature gas 20t dealer industrial boiler moldavia Henan conventional low NOx combustion technique is mainly about how to reduce the combustion temperature to reduce thermal NOx generation undertaken Henan gas boiler main techniques include staged combustion, premixed combustion, flue gas recirculation, catalytic combustion porous media and flameless combustion. A, or fuel staging combustion air staging combustion thermal NOx generation largely depends on the combustion temperature. The equivalent ratio of the combustion temperature in the case where 1 is the highest, burned under lean or rich combustion cases, the combustion temperature will be much lowered. Using this principle has developed a staged combustion technology. Henan air staged combustion of gas boiler is a fuel rich combustion of the first stage, the second stage addition of excess air, the combustion is lean, the cooling air is added between the two to ensure that the boiler will not be too high combustion temperatures. Combustion air staging and fuel staging combustion contrary, with the first stage fuel lean combustion, fuel is added in the second stage so that the equivalent ratio required value is achieved. These two methods will eventually cause the excess air ratio of the entire system to maintain a constant, low nitrogen currently widely used as combustion control technique. Second, the premix lean premixed combustion technology Henan boiler combustion gas refers to fuel and oxidant completely mixed at the molecular level before the mixture is ignited. For controlling the generation of NOx, this technique has the advantage of controlling the combustion temperature can be achieved by fully controlling the equivalent ratio, thereby reducing thermal NOx formation rates, in some cases, partially premixed and the premixed combustion than non-premixed 85% -90% of combustion to reduce NOx production. Further, the premix can also be reduced completely to reduce the excess air ratio due to unevenness caused by generation control of NOx. However, premixed combustion technology there are still unresolved technical difficulties on the security control: First, because of its highly combustible premixed gas may cause tempering; the second is too high excess air ratio will lead to an increase in exhaust losses , reduces the thermal efficiency of the boiler.
Corrosion 20t dealer industrial boiler moldavia water wall Analysis and Solution: For boilers, corrosion will directly or indirectly affect the life of the boiler. One of the main factors of high temperature corrosion of boiler water wall is seriously affecting the safe operation of the unit, solve the problem of water wall high temperature corrosion of boiler operation has a good long-term stability of the practical benefits. Many membrane wall by the rolled boiler water wall tube spot welding the fins to each other, making a combination heating surface sealing, can improve the air tightness of the furnace, reduced leakage, but also better protecting the furnace wall, the furnace wall reduce the weight, simplifying the structure.
In order to improve ambient air quality in the region, Linfen City, Shanxi Province with the actual situation, issued a notice "Linfen City in 2019 iron and steel, coking industry depth reduction plan". "Program" is mentioned, requiring all enterprises in the implementation of the transformation process of governance, compliance with the target, select advanced, mature, stable, and reliable control technology implementation of the transformation.
1, the end of June 2019, to complete the iron making and steel making ultra-low emissions transformation; the end of October 2019, the completion of the sintering head (pellet sintering) transformation of the ultra-low emissions.
Acceptance criteria: sintering (pellet) smoke particulate matter, sulfur dioxide, nitrogen oxide emissions in the reference oxygen concentration of not higher than 16% under the conditions (18%) of 10mg /, 35mg /, 50mg / m3; iron, other processes steelmaking emissions of particulate matter, sulfur dioxide, nitrogen oxides emission concentration is not higher than a standard 10mg / m3,50mg / m3,200mg / m3 of.
2, before the end of October 2019, the city's iron and steel enterprises to fully complete management and monitoring of fugitive emissions, fugitive emissions control, control, governance intelligent integration platform built
Acceptance criteria: transformation, steel companies outside the main source of fugitive emissions at 1 m, the particle concentration is less than 5mg / m3; the concentration of particulate matter emissions by organized collection after treatment is less than 10mg / m3.
3, the end of June 2019, to complete the coke pushing, coke ultra-low emissions of other transformation step; the end of October 2019, to complete the transformation of ultra-low emissions oven chimney.
Acceptance criteria: coke chimney particulate matter, sulfur dioxide, nitrogen oxide emissions in the reference oxygen concentration of not higher than 10mg / m3,30mg / m3,130mg / m3 under the conditions of 8%; coke oven coal, coke pushing step particulate matter emission is not higher than a standard concentration of 10mg / m3 of.
4, before the end of October 2019, the city's coking enterprises fully completed fugitive emission control and monitoring, fugitive emissions control, control, governance intelligent integration platform.
Acceptance criteria: transformation, mainly coking fugitive emission sources outside 1 m, the particle concentration is less than 5mg / m3; the concentration of particulate matter emissions by organized collection after treatment is less than 10mg / m3.
Fast 20t dealer industrial boiler moldavia always been convinced that "from the user's point of view observation and thinking" business philosophy, in the pre-sales consulting, sales and after-sales cooperation of remote monitoring systems are put in 120% effort to provide users with high-quality boiler products continue trying. Third, the brand have to say, the brand's influence is infinite. Build a good reputation and become the user in mind assured brand boiler is a boiler company's soft power. The good reputation is vital countless users in the use of the boiler, resulting most honest feedback, also depends on the quality of the boiler itself.