3results about How to "Fully burnt out" patented technology

The utility model belongs to cement kiln disposal technical field, disclose a kind of alternative fuel incineration boiling furnace suitable for cement kiln, including boiling furnace body, the top of boiling furnace body is equipped with alternative fuel import, alternative fuel import place is equipped with material lifting device, the material lifting device includes driving motor, transmission mechanism, material lifting plate and heat shield, the driving motor and material lifting plate in the transmission mechanism connection are in furnace outside, the heat shield is arranged in the outside of transmission mechanism as its support and protection, driving motor drives transmission mechanism to drive material lifting plate to swing up and down.This boiling furnace is blown and the reasonable flow rate design by the material lifting effect and air cannon of material lifting device, fuel is in suspension in hearth, air cannon is blown to the violent disturbance of material combustion, destroys the original flame layer generated in combustion process, improves the combustion condition of material surface, promotes the full burnout of material, shortens the combustion time of material.

The invention discloses a multi-stage swirl ultra-low nitrogen gas burner with internal circulation of flue gas, wherein a central wind area is formed between a central wind tube and a central gas fuel spray gun, and a first swirl wind area and a second swirl wind area are formed between the central wind tube and a swirl-jet wind tube, wherein the first swirl wind area and the second swirl wind area are both annular structures, and the first swirl wind area and the second swirl wind area are sequentially distributed from the inside to the outside, and an annular jet smoke mixed wind area is formed between the swirl-jet wind tube and an outer tube of the burner, and a main gas pipeline is provided on the side of the outer tube of the burner; the gun head of the central gas fuel spray gun passes through the central wind area, the gun head of the middle layer gas fuel spray gun passes through the first swirl wind area, and the gun head of the outer layer gas main fuel spray gun passes through the second swirl wind area; the burner adopts a flue gas recirculation technology, has stable combustion, and has the characteristics of high combustion efficiency and low nitrogen oxide emission.

This invention discloses a combustion system and method for the separate grinding and co-firing of low-volatile and high-volatile coals, relating to the field of coal-fired power generation. The system includes a main air box, a burnout air box, secondary air nozzles, high-volatile coal pulverized coal burners, low-volatile coal pulverized coal burners, and burnout air nozzles. The main air box is divided into a high-volatile coal combustion zone and a low-volatile coal combustion zone, with the low-volatile coal combustion zone located in the lower part of the burner. The burnout air box is located in the furnace height direction away from the main air box, forming a nitrogen reduction and deswirl zone. This invention employs separate grinding and pulverization, and zoned burner arrangement to match the different combustion characteristics and pulverization requirements of low-volatile and high-volatile coals. This achieves a high proportion of low-volatile coal co-firing, effectively improving the stability of the boiler combustion system, increasing the pulverized coal burnout rate, reducing NOx emissions, suppressing the rotation intensity of flue gas at the furnace outlet, and reducing flue gas temperature and steam temperature deviations.