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Classification and technical requirements of gas burners
Classification and technical requirements of gas burners
1、 Classification of gas burners.
There are many types of gas burners with different classification methods. It is difficult to comprehensively reflect the characteristics of burners by using one classification method. Here are some common classification methods:
1. Classification by combustion mode
(1) Diffusion burner: the air required for combustion is not mixed with gas in advance, and the primary air coefficient is 1=0;
(2) Atmospheric burner: mix some air with gas in advance, and the primary air coefficient is 1=0.2~0.8;
(3) Fully premixed burner: fully mix all air and gas required for combustion in advance, and its primary air coefficient is 1=1.05~1.10.
2. Classification by air supply mode
(1) Injection-type burner: the air is sucked by the air jet or the gas is sucked by the air jet flow;
(2) Natural air supply burner: the air is sucked into the organization for combustion by the negative pressure in the furnace;
(3) Blast burner: air is sent to the furnace through the blast device to organize combustion.
3. Classification by fuel:
(1) Pure gas burner: gas only
(2) Gas-oil combined burner: can burn gas and oil at the same time or separately
(3) Gas-pulverized coal combined burner: gas or pulverized coal can be used simultaneously or separately
4. Classification by special functions
(1) Immersion burner
(2) High-speed burner
(3) Pulse burner
(4) Low nitrogen burner
2、 Technical requirements for gas burners.
Different processes have different requirements for gas burners. The technical requirements of natural gas boilers for burners mainly include the following aspects:
1. The burner can reach the rated output under the rated gas pressure;
2. The flame shape, size and furnace structure size shall match, and the flame shall have good combustion performance;
3. It has good regulation characteristics, and it can burn stably from the minimum load to the maximum load of the boiler, that is, there is a large regulation ratio;
4. The combustion efficiency is high, and the pollutant emission after combustion meets the standard;
5. Compact structure, convenient installation and operation, flexible adjustment and low noise.Author：Ebico