Solutions to the Problems of Heating in Plateau Areas - self recycling burner

Solutions to the Problems of Heating in Plateau Areas
The air in the plateau is thin, the oxygen content is lower than that in the plain, and combustible materials are not easy to ignite. The heating problem in the plateau is difficult to solve for a long time, but the following measures can be taken to alleviate it.
1、 Preferred burner.
The output power of the plateau burner is only half of the maximum output power of the plain. Therefore, half of the maximum power of the selected burner is the maximum output power of the plateau; The smaller the minimum output power value of the burner, the better.
2、 Improve the quality of fuel atomization.
There are two ways to improve the quality of fuel atomization: 1. Select a small nozzle to increase oil pressure; 2. Preheat the fuel to reduce its kinematic viscosity.
The improvement of atomization quality, the acceleration of fuel evaporation rate, and the increase of opportunities for contact with oxygen are conducive to combustion under hypoxia at high altitudes. But the preheating temperature should not be too high, otherwise the oil viscosity is too low, which is not conducive to the lubrication of the burner gear pump and affects the service life of the nozzle and gear pump.
3、 Strengthen the combustion intensity of the combustion chamber.
1. Choose a burner with a high rotational strength air distribution device.
The larger the rotation strength Ω value, the stronger the jet rotation and the stronger the ability to mix with the surrounding medium; At the same time, the diffusion angle of the jet increases, the range is shorter, and the reflux zone increases. From combustion physics, it can be seen that increasing the reflux zone is beneficial for combustion.
2. Choose a nozzle with a smaller atomization angle.
The atomized fuel has a conical shape and a small atomization angle, which is beneficial for the fuel to quickly enter the reflux zone and fully burn coal.
3. Place a blunt body behind the reflux zone.
After the reflux zone, a stable combustion zone is formed by creating a reflux, fully burning the unfinished gas, which can effectively reduce the phenomenon of carbon deposition caused by hypoxia, reduce the excess air coefficient, and increase the power of the burner.
Insert a blunt body and use it to generate a reflux zone X/D10:00 (X represents the distance of the airflow along the axis), with a concave area near the axis; But after X/D>20, there's nothing at all
4. Add a cone in front of the combustion chamber cone.
Due to the high temperature of the gas in the torch, when there is an attached cone in front of the cone in the combustion chamber, the gas can be heated to a very high temperature, causing the unburned CO in the gas to undergo secondary combustion, effectively reducing the phenomenon of carbon deposition in the heat exchanger.
5. Open holes in the combustion tube of the burner.
The purpose is to use the high-temperature flue gas in the combustion chamber to mix with the combustion air, heating the combustion air, which is conducive to the evaporation of atomized fuel and accelerating combustion.