Main Structure Type and Operation Performance of Oil and Gas Burner
oil/gas burner Operational performance
Oil and gas burner is a kind of oil and gas fuel and air in accordance with the provisions of the ratio, speed and mixed way into the furnace for timely fire and efficient, clean burning device. This device is generally equipped with automatic ignition, flame monitoring and automatic adjustment device of the automatic burner. At present, China's industrial kiln field used in the vast majority of oil and gas burners are this is a fully automatic burner.
Oil and gas burners are the most important key equipment for oil and gas industrial furnaces. According to the fuel can be divided into oil burners and gas burners; also have two different fuel fuel (fuel and gas or two different gas) dual fuel burners, such as oil and gas burners and so on.
Oil burner mainly by the oil nozzle (atomizer) and the fan and other components; gas burner is mainly by the gas nozzle or nozzle and the composition of the fan.
3.1 The basic requirements of the burner
In order to meet the needs of the combustion process in the furnace to ensure that the boiler and other equipment safe and reliable, efficient and low pollution emissions under the operation, the burner should have the following main technical performance:
(1) high combustion efficiency
In order to ensure the high combustion efficiency of the operation, the fuel burner is required to have a good atomization performance within a certain operating range, that is, the oil droplets in the oil droplets after atomization are fine and uniform and the atomization angle is appropriate , Oil mist along the circumference of the flow density distribution consistent with the wind, oil mist and air mixed well.
For gas burners at rated gas pressure, should be able to pass the rated gas and burn it fully to meet the boiler rated heat load production.
(2) reasonable with the wind, to ensure fuel combustion stability, complete.
In the root of the torch should be timely supply of appropriate air to prevent oil and gas due to high temperature and hypoxia and pyrolysis of carbon black; in the combustion airflow outlet should be formed a moderate size, proper location of the return area, the fuel and air at a higher Of the temperature field to ensure that the fire quickly and stable; in the middle and late combustion to make the air and oil mist mixed quickly and evenly to ensure that the combustion is complete, and combustion of smoke generated in the harmful substances (CO, NOx, etc.) less it is good.
(3) combustion flame shape and length should be compatible with the furnace, the flame full of good, flame temperature and blackness should meet the requirements of the furnace. Do not allow the flame to flush the heated surface of the furnace wall, the bottom of the furnace and the outlet window.
(4) good regulation performance. The burner should be able to accommodate the furnace load adjustment requirements, that is, between the minimum load of the furnace and the maximum load, the burner can work stably without tempering and dehisiting.
(5) the nozzle in the atomization of the energy consumed by the less the better.
(6) the resistance of the fan device is small, the operation noise is small.
(7) ignition and operation adjustment and other easy to operate, safe and reliable.
(8) simple structure, compact, reliable operation, high degree of automation, easy maintenance.
Oil and gas boiler and furnace combustion conditions are good or bad, mainly depends on the performance of the burner. Oil burner atomization quality is not good or unreasonable with the wind will cause the following adverse effects:
(1) combustion is not complete, polluting the boiler tail heating surface, smoke temperature rise, and even cause secondary combustion.
(2) The incomplete heat loss of combustible gas is increased.
(3) The incomplete heat loss of combustible solids is increased.
(4) oil burner outlet or coke in the furnace.
(5) there is flame, fire or even furnace explosion and other accidents.