In order to solve the problem of low temperature uniformity caused by the arrangement of traditional swirl burners in the roller hearth heat treatment furnace, an arrangement of low nitrogen burners in the roller hearth heat treatment furnace based on gas classification technology was proposed. First of all, the optimized low nitrogen burners that have been simulated were placed on the heat treatment furnace in four different arrangements. Secondly, the Ansys Fluent software system was used to simulate the influence of different arrangements of low nitrogen burners on the temperature uniformity in the heat treatment furnace. Finally, by comparing the temperature distribution cloud map and the horizontal temperature change map of the hydrogen storage tank, the optimal arrangement of the burner was determined. The results show that compared to the other three arrangements of burners in the heat treatment furnace, the horizontal positions of y=100 mm and y=700 mm are evenly arranged, and the dislocation spacing is 400 mm, which can enhance the convection, help to improve the temperature uniformity in the furnace, and also bring about the reduction of energy consumption. After designing the low nitrogen burner, a specific way is given for the arrangement of the burner in the roller hearth heat treatment furnace, providing an optimization direction for the temperature uniformity design of the roller hearth heat treatment furnace.