Instructions for choosing the right boiler burner:
To ensure good boiler operation, quality and safety, choosing the right boiler burner is also one of the important requirements. The following article will help you better understand how to choose the right type of burner for the boiler.
The main objective related to the combustion technique is to burn oil with the criteria of achieving the best efficiency, ensuring operational safety and minimizing air pollution. This goal can only be achieved by using the proper burner assemblies and operating them correctly. We can classify boiler burner groups according to the principle of oil treatment before being put into combustion by distinguishing the burners operating in the way of vaporization or misting.
The group of popular boiler burners today:
1. Air atomizing burner (air atomizing)
Advantages
– Fine mist, relatively high velocity, should mix well with the air used for combustion.
– Simple structure, not fussy but still burning well, high efficiency.
– Not picky about oil, can burn bad oil.
Defect
– Need to equip an additional air compressor.
2. Saturated steam atomizing burner (steam atomizing),
Advantages
– The oil continues to be heated from the steam used for misting.
– Simple structure, not fussy but still burning well, high efficiency.
– Not picky about oil, can burn bad oil.
Defect:
– Digest steam to spray mist, about 2-3% of steam output.
3. Burner using pressure mist (high pressure)
Advantages
– High pressure oil (up to 30 at) applied to the burner improves the fineness of the misting.
– Simple texture.
Defect:
– Oil nozzles are parts that require sophisticated and precise machining and require wear-resistant materials.
– Oil quality greatly affects combustion.
4. Centrifugal mist burner (rotating cup type)
Advantages
– From the point of view of mixing with the air, this is the most beneficial type. The distribution of excess mist particles is more than that of pressure misting.
– Not picky about oil, can burn bad oil.
Defect:
– Complex structure, details require precision machining, high-speed rotating cup, high cost.
How to judge the boiler burner quality?
A good boiler burner requires a perfect combustion and the guarantee of a minimum amount of excess air. An ideal combustion process has some of the most important advantages:
– Boiler efficiency is improved by the reduction of exhaust gas, at the same time reduction of exhaust gas losses and subsequently by the generation of less soot resulting in cleaner heat exchanger surfaces, better heat exchange.
– Reducing the amount of waste released into the environment.
– By reducing the production of sulfuric acid and lowering the dew point, chemical corrosion is reduced.
For perfect combustion, it is necessary to ensure a good mixture of the oil and the air used for combustion, except in the case of gas misting in all types of burners starting only after the combustion process. mist spray.
On the Vietnamese market today, mainly using burners manufactured according to the high-pressure principle of many different countries. These types of burners, after a period of use, clearly reveal the following points:
1/ Due to not paying attention to the oil filter system before entering the high-pressure pump, the pressure is often reduced, making it difficult to burn oil and increasing fuel consumption. The repair or replacement is often high cost (from 300 to 1,000 USD/pump).
2/ It is often difficult to calibrate the high-pressure burner in the condition of unstable oil quality, requiring a lot of experience. Especially, in the condition of bad oil quality, the high pressure burner is difficult to ignite.
Some investors with enough financial capacity often choose a diffuser or a rotating cup – these are two types of burners that are less fussy. However, as mentioned above, the rotary cup burner is often expensive.
In the case of heavy oil that is popular on the Vietnamese market today, the solution of using wind mist is a reasonable solution with good mist quality and acceptable price.
KS – Boiler specializes in manufacturing, installing and maintaining industrial boilers:
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Hotline: 1900 055 595
Website: https://ks-boiler.com
Office address: No. 9A, Street 73, Tan Quy Dong Residential Area, Tan Phong Ward, District 7, HCMC
