Annular tangential feeding burner of cyclone furnace

Abstract

The invention relates to the technical field of flame sprayers, and discloses an annular tangential feeding burner of a cyclone furnace. The annular tangential feeding burner comprises a flame sprayerbody, a flame sprayer inner shell, a vortex chamber, a connecting flange, an annular air chamber, a fuel inlet, a rectangular metal connecting port, a rectangular non-metal nozzle, a fixed sleeve pipe, and a rectangular nozzle, wherein the flame sprayer inner shell is arranged in the flame sprayer body. According to the annular tangential feeding burner, solid fuel and air are fully mixed and aresprayed into the cyclone furnace at a high speed through the rectangular non-metal nozzle, so that a stable and efficient rotating airflow field is artificially formed, and a strong heat and mass transfer process occurs in the airflow field. Carbon in the fuel and oxygen and water vapor in a gasifying agent are subjected to a strong oxidation-reduction reaction, so that the coal gasification strength and the gasification yield are improved, and the effective gas content and the calorific value of coal gas are improved. In order to avoid slagging at the nozzle, a hearth tangential feeding modeis adopted, and the rectangular non-metal nozzle is made of a wear-resistant and high-temperature-resistant non-metal material, so that the service life of the nozzle is guaranteed.

Description

technical field [0001] The invention relates to the technical field of flame injectors, in particular to an annular tangential feed injector of a cyclone furnace. Background technique [0002] A kind of furnace that utilizes the action of high-speed rotating airflow to make the coal chips burn in a vortex shape in the furnace. Because the flame is shaped like a "whirlwind", it is named a cyclone furnace. According to different types, there are two front-mounted vertical cyclone furnaces and horizontal cyclone furnaces. The former coal chips are fed from the top of the front cyclone, and the high-speed swirling airflow entering along the tangential direction makes most of the coal chips fall to the inner surface of the tube wall, where they burn in a high-speed swirling flow; the high-temperature flue gas generated after fuel combustion It enters the furnace through the burnout chamber, and the ash and slag become molten due to the high temperature in the cyclone and are disc...

AI Technical Summary

Problems solved by technology

Its disadvantage is that it is difficult to adjust the concentration of thick and light powder according to the load level, and the structure is complex and the fuel saving effect is poor.

The third type is the pre-combustion chamber burner. The disadvantages of the existing type of burner are that the pre-combustion effect is poor, it is easy to coke, and it is difficult to work stably for a long time. Therefore, we proposed a circular tangential feed burner for cyclone furnace

Images