Combination device for realizing low-nitrogen short-flame combustion of diesel burner and control method

Abstract

The invention relates to the field of combustors, in particular to a combined device for achieving low-nitrogen short-flame combustion of a diesel combustor and a control method. The combined device comprises an adjusting device, a combustion cylinder, a tail end cylinder, a double-rotational-flow flame stabilizing disc, a nozzle and an ignition assembly, the tail end cylinder is fixed to the front end of the combustion cylinder, the double-rotational-flow flame stabilizing disc is fixed inside the front end of the combustion cylinder, the adjusting device is installed inside the middle section of the combustion cylinder, and the nozzle is fixed inside the middle section of the combustion cylinder. The adjusting device, the combustion cylinder, the tail end cylinder, the double-rotational-flow flame stabilizing disc and the nozzle are all coaxial. The combustion air distribution proportion is changed, air supply guiding and injected flue gas recirculation combustion are enhanced, on the premise that flame stability is guaranteed, the rotational flow air distribution strength is improved, the turbulence degree of oil mist flame is enhanced, the flame length is shortened, air disturbance is enhanced, the oil-gas mixing effect is enhanced, and NOx generation is restrained; the gathering effect of air on flames is enhanced, and the length of the flames is shortened; high-temperature flue gas is injected to flow back to participate in secondary combustion, and emission of NOx is reduced.

Description

technical field [0001] The application relates to the field of horizontal electronically controlled diesel burners with forced air supply, in particular, to a combined device and control method for realizing low-nitrogen short-flame combustion of diesel burners. Background technique [0002] At present, the horizontal electronically controlled diesel burners used in the market are mainly designed for use with boilers. When equipped with small heat exchange equipment, there are flame compatibility problems, mainly in the following aspects: [0003] 1. At present, small-scale heat exchange equipment tends to be compact in structure, and its combustion chamber space is relatively small. The horizontal electronically controlled diesel burner with pressure swirl diffusion combustion is used, and the flame length is long, which causes the flame to form in the heat exchange equipment combustion chamber partial fire, uneven heating, poor adaptability and other problems. [0004] 2....

AI Technical Summary

Problems solved by technology

[0003] 1. At present, small-scale heat exchange equipment tends to be compact in structure, and its combustion chamber space is relatively small. The horizontal electronically controlled diesel burner with pressure swirl diffusion combustion is used, and the flame length is long, which causes the flame to form in the heat exchange equipment combustion chamber partial fire, uneven heating, poor adaptability and other problems

[0004] 2. For the burner that adopts the pressure swirl diffusion combustion method, the flame temperature area is unevenly distributed, and the combustion range of the fuel particles is short, which cannot be evenly and fully burned, resulting in a large amount of NO x Discharged into the atmosphere with flue gas

Images