Braize decoupling combustor for improving flow division performance and concentration and combustion method

The invention discloses a braize decoupling combustor for improving flow division performance and concentration and a combustion method based on the combustor. The combustor comprises a nozzle, a thick flow and thin flow partition board, an upper braize collecting flame holder, a lower braize collecting flame holder and a middle braize collecting flame holder. By arranging the middle braize collecting flame holder, the angle of inclination of braize collecting slopes of the braize collecting flame holders can be reduced under the same airflow space compression rate, so that abrasion to the braize collecting flame holders is reduced, the service life of the combustor is prolonged, braize segregation and coking of a combustor outlet can also be reduced, and the effect of decoupling combustion is improved. 本发明公开了种增强分流增浓的煤粉解耦燃烧器以及基于此燃烧器的燃烧方法，所述燃烧器包括喷口、浓淡分流隔板，上集粉稳焰器、下集粉稳焰器和中部集粉稳焰器。本发明通过设置中部集粉稳焰器，可在同样气流空间压缩速率的情况下，减小各集粉稳焰器的集粉斜面倾角，从而降低集粉稳焰器的磨损，提高设备使用寿命，也有利于减轻燃烧器出口的煤粉偏析和结焦，提高了解耦燃烧的效果。