What are the precautions for commissioning a hydrorefining unit?

What are the precautions for commissioning a hydrorefining unit? ⒈The infrastructure has been installed and meets safety requirements ； ⒉The moving equipment passed the trial operation ； ⒊Personnel training is in place ； ⒋Pressure pipelines, containers, and valves have passed pressure testing, airtightness tests, and nitrogen purging ； ⒌Instrument calibration successful ； ⒍Zone valve closed ； ⒎The raw materials are adequately prepared, and the utility facilities meet normal requirements ； Wait.

Thank you; I will definitely study it carefully.

1. All personnel must complete training, be familiar with the equipment and processes of this system, and meet the requirements to take up their posts. 2. Thorough inspections must be carried out carefully to eliminate potential hazards. 3. Water hammer must be prevented during steam purging and pressure testing. 4. During nitrogen filling, displacement, and airtightness testing, the interior must not be depressurized, and overpressure in the low-pressure sections must be strictly prevented. 5. When achieving high-pressure airtightness, the rate of temperature and pressure increase must be strictly controlled. 6. Control the bed temperature during feeding.

1. Normal trial run 2. Catalyst loading 3. Oven heating up 4. Calibration of instruments and valves

The device is about to be put into operation, and we really need the guidance of all of you students.

First, let’s talk about the checks to be done before driving: 1. Check whether the ladders on the reactor and the high-pressure air cooling platform, as well as the platforms themselves and their railings, are in good condition, and ensure that all tools have been removed； 2. Are the safety facilities complete, sensitive, and functional? Is the lighting in order? Are the manhole covers intact? Are the roads clear? ； 3. Is the insulation of the reactor and high-pressure pipelines in good condition? ； 4. Are the 8-shaped blind plates at the reactor’s inlet and outlet installed correctly? Is the reactor bed under nitrogen pressure, and are there any abnormalities in the temperature of the catalyst bed? ； 5. Is the low-pressure section connected to the reaction system isolated, and are safety devices such as safety valves in the low-pressure section in operation? ； 6. Are the high-pressure instrument control system and the unit interlock system flexible and easy to use? ； 7. Whether high-pressure moving equipment is in standby mode, and whether static equipment has its openings sealed, etc. Turning to the main contents of the commissioning plan, for reference only: In the first phase, there is a comprehensive inspection of the equipment, system purging, pressure testing (including airtightness testing), water flushing, individual unit testing, and furnace drying ； The second phase includes water transportation, cold oil transportation, hot oil transportation, etc ； The third phase includes catalyst loading, system airtightness testing, catalyst drying, catalyst presulfurization, commissioning of each tower, starting up of feed supply, and adjustment operations.

The forum contains the original planning documents; the thread owner can take a close look at them at: http://bbs.hcbbs.com/viewthread.php?tid=232692&highlight=%BF%AA%B9%A4%B7%BD%B0%B8 http://bbs.hcbbs.com/viewthread.php?tid=156857&highlight=%BF%AA%B9%A4%B7%BD%B0%B8 http://bbs.hcbbs.com/viewthread.php?tid=84318&highlight=%BF%AA%B9%A4%B7%BD%B0%B8

Points to note when starting up hydrorefining: 1. All personnel must have completed proper training, be familiar with the equipment and processes of this unit, possess a sense of safety responsibility, and meet the requirements for taking up their posts； 2. A thorough inspection of the equipment must be carried out carefully; any issues found should be addressed promptly to eliminate potential hazards ； 3. During steam purging and pressure testing, water hammer must be prevented ； 4. When flushing with water, do not let it reach the motor to ensure the safety of the unit ； ⒌The commissioning of the unit must be carried out rigorously; any issues found should be reported promptly for handling ； ⒍Pressurization must be carried out in accordance with the design specifications to prevent overpressure from damaging the equipment ； 7. When achieving high-pressure airtightness, the rate of temperature and pressure increase must be strictly controlled ； ⒏A plan should be prepared before feeding to provide operators with clear guidelines to follow ； ⒐Proceed with the work strictly in accordance with the steps; rushing ahead in an attempt to show off is strictly prohibited.

Help me: What analysis instruments are needed to get a hydrogenation unit up and running? What instruments are needed to analyze raw materials?

Any instrument capable of analyzing the sulfur content, nitrogen content, boiling range, and specific gravity of oils will do； A spectrometer is also needed to measure the purity components of the recycled hydrogen ； There’s nothing special.

1. Pay attention to hydrogen balance. 2. Meet the requirements regarding the properties of raw materials. 3. Ensure that inputs and materials remain stable to avoid significant fluctuations. 4. Ensure smooth discharge during pre-vulcanization. 5. Close cooperation is necessary between upstream and downstream units

When starting up hydrorefining, special attention should be paid to system leaks. Due to the high pressures involved, great care must be taken during leak testing. Another important aspect is the sulfidation of the catalyst; ensuring an appropriate sulfidation rate is beneficial in the long term. Most importantly, special attention must be given to the temperature rise when feeding oil into the system, to avoid damaging the equipment and the catalyst.

Thank you, 11th floor!:victory:

It mainly depends on people’s sense of responsibility and the authenticity of the operation cards