Novel high-efficiency low-NOx-emission combustor

Abstract

The invention provides a novel high-efficiency low-NOx-emission combustor. The novel high-efficiency low-NOx-emission combustor comprises a housing, a main fuel spray gun, secondary fuel spray guns, afire pan brick, a convergent brick and incandescent lights; an inner cylinder and a flame path brick of which the inside parts are each of a hollow structure are arranged inside the housing; a plurality of secondary fuel spray guns are uniformly distributed on the outer wall of the flame path brick; the inner side of the flame path brick is provided with the convergent brick which is internally provided with a hollow structure; a combustion chamber for combustion of gases is formed in the inner side of the convergent brick; the sidewall of the inner cylinder is provided with a plurality of air inlets and incandescent lights; the fire pan brick is arranged inside the convergent brick; a cavity inside the fire pan brick communicates with a combustion air passage; the main fuel spray gun isarranged inside the cavity inside the fire pan brick; and the bottom end of the main fuel spray gun and the bottom ends of the secondary fuel spray guns both penetrate out of the bottom of the housingand communicate with a fuel distributor of which the bottom is provided with a fuel inlet. The novel high-efficiency low-NOx-emission combustor can effectively reduce emission of NOx, improves the heating efficiency of a heating furnace and is beneficial for reducing the height of flame and improving the distribution of a temperature field of a radiation chamber.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to a novel high-efficiency and low-NO X burner. Background technique [0002] The burner is a key component of the heating furnace, and its performance has a direct impact on the operation of the heating furnace, energy consumption and environmental protection. In the past, ordinary burners represented by type VI and high-efficiency burners represented by type GX were used more frequently. In recent years, in order to meet the requirements of GB31570-2015 "Petroleum Refining Industry Pollutant Discharge Standard" and GB31571-2015 "Petrochemical Industry Pollutant Discharge Standard" implemented on July 1, 2015, the national petroleum refining, petrochemical , water pollutants, and air pollutant emissions must all meet the new standards, otherwise the environmental protection department will impose severe penalties on companies that fail to meet the standards. To this end, Sinope...

AI Technical Summary

Problems solved by technology

[0003] After the promotion of low NOx burners, some new problems appeared, such as: the flame is longer, the temperature field of the radiation chamber moves up, the outlet temperature of the combustion chamber rises, the longitudinal non-uniformity coefficient of the combustion chamber increases, the heat load of the radiation chamber decreases and the fuel consumption increase and decrease in furnace efficiency, etc.

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