Neutralization Case | Application of Yellow Phosphorus Tail Gas Burner in the Roasting of Active Limestone

Project Overview

        KR Phosphorus Chemical Co., Ltd. in Leibo County, Sichuan Province operates two active lime production lines with a diameter of 3.5×58 meters. These production lines use yellow phosphorus tail gas as a unique fuel. For a long time, they have been able to maintain an efficient and stable operation state, which is inseparable from the technical support of Xiangyang Zhonghe Electromechanical.

        Zhonghe Electromechanical has equipped this production line with the self-developed and produced SR2-150Q /15YS burner and the corresponding valve group. Over the years, the stability of the entire system has been remarkable. No ring formation has occurred inside the kiln, and the service life of refractory materials has reached an astonishing four years, significantly reducing maintenance costs and enhancing production efficiency.

Air design adapted to the characteristics of exhaust gas：

        The self-ignition temperature of yellow phosphorus tail gas is relatively low. Based on this characteristic, the burner of Xiangyang Zhonghe Electromechanical has achieved precise matching in the design of flame air, meeting the requirement of complete combustion of yellow phosphorus tail gas.

Ideal flame temperature and product quality:

        The flame color produced by combustion presents an ideal state of white in the middle and yellow on the outside. The finished active lime produced by firing meets the first-grade standard in terms of activity and calcium content.

Long-term stable system operation：

        From the perspective of the overall system operation effect, after adopting the burners and matching valve groups of Xiangyang Zhonghe Electromechanical, the quality of the production line has been stable and reliable.

        It is particularly worth mentioning that the refractory materials in the firing zone have a service life of up to four years. This not only demonstrates the stability of the burner's operation but also reflects from the side its optimization effect on the production process, bringing significant economic and production benefits to KR Phosphorus Chemical Co., LTD.