Writer： admin Time：2021-07-31 00:00 Browse：℃
Natural gas is a hydrocarbon gas admixture, hydrogen sulfide, carbon dioxide, nitrogen and other components, which is mined from the ground combustible gas. Natural gas burner can be used in heating engineering, the low nitrogen burners choose to consider the main parameters
Low NOx combustion main parameters considered in selection
Since 2017, after the release of Nitrogen Oxide emissions requirements of the new standard boiler NOx emissions below 30 mg, boiler NOx emissions with less than 80 mg. For most of the market with gas boiler owners, means must be replaced with a low-nitrogen burners, in order to meet emission requirements. so low nitrogen burners choose to consider the important parameters, what does? since 2017, issued after the boiler nox emissions standards for new boiler nox emissions below 30 mg, in boiler nox emission is less than 80 mg. For most in use gas boiler owners on the market at present, means must be replaced as low nitrogen burner , in order to meet the emission requirements. So low nitrogen burner choose to consider what are the important parameters? NOx emissions NOx emissions must meet environmental discharge requirements of national and local, in meeting the requirements from the perspective of corporate social responsibility , should try to choose lower NOx emissions equipment;. It is necessary to meet the requirements of national and local environmental protection emissions On the premise of meeting the requirements, from the perspective of corporate social responsibility, the equipment with lower NOx emissions should be selected as far as possible. oxygen content in tail the tail oxygen content in order to achieve full combustion of the excess air ratio limit of about 1.1, the theoretical oxygen content corresponding to the end of about 2%. higher oxygen content usually means that the end of the burner efficiency reduce. The oxygen content is preferably over the end of the burner can be controlled within 3%; combustion oxygen content of the end surface of the burner on the market usually around 7%, with respect to the end of the oxygen content of 3%, which means to produce the same amount of heat required multi take about 6 to 8% of the gas. For long-term annual or device operation at a high load operation, a relatively large consumption of natural gas owners select a low oxygen content is critical to the end of the burner to reduce operating costs. In order to reach the maximum excess air coefficient of full combustion, which is about 1.1, the theoretical tail oxygen content is about 2%. A higher tail oxygen content usually means a reduction in burner efficiency. The optimal tail oxygen content of the ideal burner can be controlled within 3%. The tail-oxygen content of combustion burners on the market's surface is usually around 7%, which means the same amount of heat is produced, compared with 3% of tail-oxygen content, which requires about 6- 8% more natural gas to be consumed. for the owners who operate all year round or whose equipment is under high load for a long time and whose natural gas consumption is relatively high, it is very important to select a burner with low tail oxygen content . to reduce the operating cost of the electronic proportional control using an adjustable low-nitrogen burners should usually have at least 5 than adjustable than: 1 or more high rangeability. Adjustable lower than in the actual operation process means more ON / Off start and stop, but also means more consumption of natural gas. Unless the load is in a relatively small annual stable section of a boiler, a high selection ratio adjustable burner for reducing the consumption of natural gas, reducing operating costs, extend the life of the device it is important. Low nitrogen burners with electronic proportional regulation should usually have a high adjustable ratio of at least 5 to 1. A lower tunable ratio means more ON / Off stops during the actual operation and more gas consumption. Unless it's stable load all the year round in a smaller range of boiler, choose a high adjustable ratio of burner for reducing the consumption of natural gas, reduce running cost, prolong the service life of equipment is very important.
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