A novel burners arrangement of an entrained-flow gasifier studied by experimental and simulation methods

In the entrained flow gasification process, the multi-burner arrangement is widely used. The burner arrangement affects the airflow movement and the gasification performance. A novel burner arrangement is proposed in this study: four burners counter-biased arrangement. The swirl airflow can be formed in the gasifier under the arrangement. While ensuring sufficient mixing of the burner jets, the swirl intensity can be adjusted by changing the burner biased angles. The PDA experiment and simulation results show that when using the counter-biased burner arrangement with the same biased angles, effective swirl cannot be formed in the gasifier. When using the counter-biased burner arrangement with different biased angles, a rotating flow field is formed in the gasifier, and the residence time of the particles is prolonged. When the angle between A₁ and A₂ burners is 102°, the residence time of fine slag particles in the furnace is up to 4.3 s.