Boiler denitration | gas boiler denitration ultra-low emissions

Release time:

2022-12-02

All over the country continue to carry out small and medium-sized boiler ultra-low emission transformation work, Green Valley environmental protection will be in line with the spirit ofexcellence, professional, reliable, positive and sincere attitude to provide customers with high-quality service, high-quality, competitive products, so that Green Valley advanced denitrification technology to benefit thousands of customers!

In recent years, with the continuous development of economy and society, the massive emission of NOx and other exhaust gases has led to an increasingly serious problem of global environmental deterioration. As the world's energy production and consumption, we need to reduce energy consumption at the same time, reduce pollutant emissions and other areas to strengthen efforts, the national environmental protection requirements are becoming more and more stringent. There are more and more denitrification and ultra-low emission transformation of gas-fired boilers and other small and medium power. The local standard of Guangdong Province has also released the special emission limit of air pollutants in Table 3 of the Emission Standard of Air Pollutants in Boilers (DB44/765-2019). Therefore, Dongguan City will further do a good job in the prevention and control of large air pollution and strengthen the management and control of emissions of gas-fired boilers. A related announcement (draft for comment) has also been issued.

Ultra-low emission transformation scheme of gas boiler:

1. Low nitrogen combustion technology mainly focuses on how to reduce the combustion temperature and the generation of thermal type NOx, and at the same time, rapid mixing at the initial stage is considered to reduce the generation of fast type NOx.

The ultra-low emission transformation of gas boiler is mainly a low nitrogen combustion technology. For the transformation and upgrading of the boiler, the excess coefficient of cold air in the new furnace is reduced to the lowest level as possible, and the energy saving and emission reduction effect of reducing the heat loss of exhaust smoke and reducing the NOx content of exhaust smoke is finally achieved.

2. We use "low-temperature SCR denitrification" technology in the low-nitrogen transformation of small and medium-sized oil-fired and gas-fired boilers.

A section of SCR denitrification reactor with enlarged cross-sectional area was inserted into the exhaust chimney section at the tail of the boiler, and the reactor was loaded with low-temperature SCR catalyst to transfer dilute ammonia (or ammonia) to the nozzle through the jet pump and piping system, and the ammonia (or ammonia) was atomized and sprayed into the chimney, so that SCR reaction occurred on the surface of the catalyst and the nitrogen oxide was reduced to nitrogen and water. The technology equipment covers a small area, easy operation, energy saving, high safety, stable effect, with very high denitration efficiency,

There are also multiple boilers on the market that share one denitration system. Some enterprises have more than one boiler, under the condition that the SCR low-temperature denitrification technology can be used to combine the boiler flue gas and share a denitrification system, in the standard discharge, but also save the cost of transformation for enterprises.

Now, all over the country continue to carry out small and medium-sized boiler ultra-low emission transformation work, Green Valley environmental protection will be in line with the spirit ofexcellence, professional, reliable, positive and sincere attitude to provide customers with high-quality service, high-quality, competitive products, so that Green Valley advanced denitrification technology to benefit thousands of customers!

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