Let’s discuss what conditions are required for the \"reverse start-up\" of a newly built refinery unit What are the benefits? What should be kept in mind?
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Let’s discuss what conditions are required for the \"reverse start-up\" of a newly built refinery unit What are the benefits? What should be kept in mind? This post was last edited by along2006 on 2009-4-13 21:58.]
Are you referring to the commissioning of a new plant? When starting up a new plant, we first get the utility systems operational, and then proceed with operations such as atmospheric pressure processing, catalysis, hydrogen production, reforming, residue processing, and hydrocracking
What is reverse driving? Is it to introduce the product first before starting operations, so as to make the start-up easier?
Hydrorefining unit: Once the gas-tightness testing of the distillation section is completed and pressurization begins in the reaction section, the oil can be fed into the distillation section to raise its temperature, awaiting the arrival of oil from the reaction section in order to enable the entire unit process to operate. Advantages: Reduces the startup time of the device
Agree with what was said above. There are also high-pressure gas devices such as pressure testing apparatuses, which require a long time for pressure sealing; thus, preparations for pressure sealing can be carried out before the catalytic process starts, saving time in the startup process.
Oil is first introduced via the back route to establish circulation, which allows for the assessment of construction quality and DCS operation status, prevents overheating, and provides reflux at the top of the tower.
Startup time is reduced, and safety risks are lowered. It is an advantage of starting work. However, it is necessary to prevent overheating and overpressure, as well as to stop defective products from affecting the system. Proper training should be provided for equipment operation.
For the hydrogenation unit, oil is first introduced to the distillation section to establish circulation and raise the temperature appropriately, before oil is introduced to the reaction system. It can reduce the startup time of the device.