Analysis of fully premixed burner by burner manufacturer
Analysis of fully premixed burner by burner manufacturer
Combustion engine manufacturer analyzes fully premixed burner! Many people are not familiar with fully premixed burners, and even say they have never been exposed to them, leaving them confused. Today, combustion engine manufacturer Oudike Burner will explain fully premixed burners to you. Let’s take a look together below.
A fully premixed burner is a burner designed according to the fully premixed combustion method. The fully premixed burner consists of a mixing device and a head.
According to the different pressures, mixing devices, and head structures used in the burner, fully premixed burners can be divided into many types:
According to the head structure, it can be divided into the following three types: head structure with fire passage; No fire path head structure; A head structure made of metal or ceramic flame stabilizers.
According to the mixing method of gas and air, there are two types: using an injector as the mixing device. The second type of gas and air are both pressurized and then mixed in a mixing device, known as pressurized mixing.
Advantages: No need for air blowing, saving electricity and air blowing equipment; High combustion temperature, easy to meet the requirements of high-temperature processes; There is less excess air (α=1.05-1.10), which will not cause excessive oxidation of the workpiece when used for direct heating of the workpiece in industrial furnaces; Equipped with a fire channel, it is easy to burn low calorific value gas; Complete combustion, less chemical incomplete combustion; The combustion heat intensity of the flameless burner is high, and the volumetric heat intensity can reach (29-58) * 103kW/m3 or higher, thus reducing the combustion chamber volume.
Disadvantage: To ensure stable combustion, it is required that the calorific value and density of the gas be stable; Burners with high heat load have relatively large and bulky structures, so the heat load of each burner generally does not exceed 2.3 * 103kW; The noise is loud, especially under high voltage and high load conditions; The possibility of tempering is high, and the adjustment range is relatively small. To prevent tempering, the head structure is relatively complex and bulky.