Multi-channel mixed fuel burner

Abstract

The invention discloses a multi-channel mixed fuel burner in the field of the burner. The multi-channel mixed fuel burner comprises an igniter channel pipe, an internal air pipe, a cyclone pipe, an air gas pipe, a natural gas pipe, an external air pipe, an internal air nozzle, a cyclone nozzle, an air gas nozzle, a natural gas nozzle and an external air nozzle, wherein the internal air pipe, the cyclone pipe, the air gas pipe, the natural gas pipe and the external air pipe are coaxially sleeved outside the igniter channel pipe sequentially from inside to outside; the internal air nozzle, the cyclone nozzle, the air gas nozzle, the natural gas nozzle and the external air nozzle correspond to air outlet ends of each pipeline; an air deflector which generates cyclone is arranged between the cyclone pipe and the internal air pipe; air inlet ends of the internal air pipe, the cyclone pipe and the external air pipe are connected with an air delivery channel respectively; and an igniter is arranged in the igniter channel pipe. A natural gas pipeline is added into the burner provided by the invention, so natural gas and coal powder are mixed to serve as a fuel, the discharge of pollutants such as nitric oxide (NOx) is reduced, and an effect of burning a raw material in cement production is improved. The multi-channel mixed fuel burner is applied to a link of cement burning in the cement production.

Description

technical field [0001] The invention relates to a burner, in particular to a mixed fuel burner. Background technique [0002] With the rapid expansion of the scale of the cement industry and the continuous improvement of environmental protection standards, cement factories at home and abroad are thinking about how to improve production quality while reducing production costs in order to maintain competitiveness in the market. [0003] The cement production process commonly used in the prior art includes the following six major steps: 1. Crushing and pre-homogenization; 2. Raw meal preparation; 3. Raw meal homogenization; 4. Preheating decomposition; 5. Burning of cement clinker ; 6. Cement milling. The firing of cement clinker is completed in the rotary kiln. In the rotary kiln, the carbonate is further decomposed rapidly and a series of solid phase reactions occur. As the temperature of the material increases, the solid phase minerals will become liquid phase and dissolve ...

AI Technical Summary

Problems solved by technology

[0009] The disadvantage is that the above-mentioned burners need to consume a large amount of coal fuel when a high combustion effect is required in the cement production process, and the combustion of pulverized coal produces a large amount of NOx pollutants, which is contrary to my country's determination to implement energy conservation and emission reduction

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