Low nitrogen combustion transformation of boiler is a very professional technical work, which also plays an important role in the prevention and control of air pollution. As a technology that has only been applied in the past two or three years, there are still many aspects to be improved. Boiler use, manufacturing, sales and installation units, burner manufacturing, sales, installation and commissioning units, special equipment safety supervision organizations and inspection and testing institutions, etc., should work together to reduce nitrogen oxide emissions of gas boilers, which benefit the country and the people more safely and more effectively into effect.
Low nitrogen burner in the domestic application came nearly three years, at present in low nitrogen burner installation, modification, commissioning, use and repair of domestic lack of relevant safety standards and technical standard, lead to safety supervision institutions and the examination agencies lack of laws and regulations or technical basis, carry out supervision and inspection work there are many difficulties. Therefore, it is recommended that the boiler, burner safety supervision agencies entrust a specialized organization, safety, environmental protection, energy conservation and domain experts to the research about low nitrogen combustion boiler alteration in Beijing, according to the problems reflected by, and refer to the relevant technical standards of developed countries, developing the low nitrogen burner safety technical specification, the low nitrogen burner installation, modification, commissioning, use and repair specific technical requirements are put forward.
Boiler use the unit should be clear own security main body responsibility, and the low nitrogen transformation involves various relevant enterprises closely linked together, make the individual, the full implementation of Beijing quality AD hoc letter [2016] no. 22, Beijing quality hair [2017] no. 6, Beijing do hair [2017] no. 16, Beijing quality supervision of quality control of the file such as the no. 39 [2017] of the relevant requirements.
According to above analysis, the use of units of boiler to take the following measures: 1) the superheater coil from the lower left side of the header, the introduction of derivation to the upper left, import, and lowest in the import of superheater header set the discharge pipe, the discharge pipe to set trap and lead to the safe place, import set so as to solve the water problem in the cabinet. 2) The original unsealed positions of the vertical baffle and shutter separator in the pot shall be sealed. In addition, the steam space height of the pot cannot be changed. To alleviate this problem, a group of underwater orifice plates shall be added to the bottom of the vertical baffle horizontally as a first-stage soda separation device. After the above two treatment measures, the normal operation of the boiler has not occurred the superheater tube explosion accident.
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