Thread Content
Heating and Reduction of the Ammonia Synthesis Tower in Jinxiang Coal Chemical Industry – Author/Source: Jinxiang Coal Chemical Industry; Date: 2020-12-31; Clicks: 8. After successfully replacing the internal components of the synthesis tower in the earlier stages, the synthesis workshop is now in the critical phase of heating and reducing the synthesis catalyst. As is well known, the quality of catalyst reduction is directly related to the subsequent activity of the catalyst and the yield of ammonia synthesis. Achieving optimal catalyst reduction is closely related to various factors, including the pressure in the synthesis system during reduction, the control of parameters such as circulating hydrogen and water vapor concentration, the adjustment of temperature and space velocity, the output power of the electric furnace, and the cumulative amount of water produced. On the 12th and 26th, the catalyst in the synthesis tower began the heating and reduction process as scheduled. To ensure that the entire reduction process proceeded in an orderly and controlled manner, the workshop prepared curve diagrams for the heating and reduction process in advance. To provide real-time feedback on important data such as water vapor concentration and the amount of circulating hydrogen, the analysts in this workshop worked tirelessly; despite the bitter cold outside, with night temperatures dropping as low as minus 14°C, they collected the first-hand samples and conducted analyses as soon as possible ； The workshop managers work in 12-hour shift rotations, staying at the forefront of production. It is their efforts that ensure the successful heating and reduction process for synthetic catalysts. However, the restoration process was not as smooth as expected. Due to the imbalance in the three phases of current in the electric furnace, the furnace did not achieve the desired results, and the rate of heating and reduction slowed down. To overcome this issue, the management staff in the workshop worked tirelessly, while the technical and operational personnel collaborated with catalyst and internal component manufacturers to find solutions. In order to make the most of the electric furnace under the existing conditions, they reviewed blueprints and consulted relevant information; by adjusting the gas composition, they ensured that the already-reduced catalyst could continue to function as a catalyst, thereby overcoming this problem with the help of the furnace’s maximum heat output. The heating and reduction process is currently underway in an orderly and intensive manner.