It is necessary to change the low nitrogen environment of boiler into the severe winter

　　Along with the advancement of science and technology, the situation of pollution is becoming increasingly tense

　　According to the research data published by journal, in 2015, one out of every six deaths in the world died of defilement, with a population of 9 million. Almost half of the 9 million people are from China and India, and they have died of illnesses caused by climate pollution. And by 2018, the number of people who died because of climate pollution has increased.

　　On September 29, the Ministry of ecological situation held a solidarity negotiation on the premise of air pollution and image dispersion in key areas of China in autumn and winter 2018 at the regular September news announcement meeting. The commentary will strictly control each pass according to the solidarity working mechanism established by the Ministry of ecological situation and the China image Bureau

　　For a long time, the most important thing for steam boiler heating is to burn fuel to obtain energy. In this process, a large number of nitrogen oxides will occur, and N0 accounts for more than 90% of the nitrogen oxides in fossil fuel and atmosphere high-temperature incineration, which will bring about tense atmosphere pollution. In the face of increasingly serious atmosphere pollution, the nitrogen reduction and innovation of steam boiler is a necessary and urgent work. At present, it is faced with the reduction of nitrogen oxides. It used to have relatively mature technology. No matter about gas-fired steam boiler or coal-fired steam boiler, it can be thrifty in investment and operation only if the low nitrogen incineration technology is accepted first.

　　How to improve the low nitrogen innovation of steam boiler

　　The nitrogen oxides produced by steam boiler heating are mainly divided into thermal type, fast type and fuel type, of which fuel type accounts for 40% ~ 60%. In recent years, low nitrogen incineration technology has been widely used in the innovation of steam boiler. At present, for the old unit, low nitrogen oxide incineration technology is adopted, and there is a large space for emission reduction. For the new nitrogen reduction innovation of steam boiler, it is important to experience incineration Combustion optimization to reduce NOx emissions.

　　The basic principle of low nitrogen incineration is to control the incineration temperature to reduce the production of "thermal" nitrogen oxides. Through the negative oxygen incineration area, the fuel nitrogen oxides will be restored to N2. At the same time, after the fuel pyrolysis is realized, the secondary air will be sent to achieve the goal of nitrogen reduction

　　In recent years, the country has initiated the policy of protecting the environment, saving energy and reducing emissions, but also vigorously advocated the policy of supporting. Since July 20197, the low nitrogen innovation management projects in all regions of the world have published relevant subsidy policies, which also provide subsidy funds in response to the low nitrogen innovation of the boiler. Whether from the perspective of the general situation or from the perspective of policies, today is the best opportunity to implement the low nitrogen innovation.

——Author：ebico