What is the main function of the KNHT in a refinery?

The primary function of the KNHT (Kerosene Hydroprocessing Unit) in a refinery is to remove sulfur from naphtha produced by processes such as delayed coking. This process is crucial for meeting stringent environmental regulations and ensuring the quality of finished fuels. By treating the naphtha to remove sulfur, the KNHT minimizes the production of sulfur oxides during combustion, which can contribute to air pollution and acid rain.

The ability to effectively remove sulfur is vital for producing low-sulfur fuels and ensuring that the refinery's products meet market specifications. This not only enhances the environmental performance of the fuels but also improves the overall quality and marketability of the refinery’s output. Thus, the role of the KNHT aligns closely with the goals of safety, compliance, and operational efficiency within a modern refinery setting.