Seeking suggestions for the start-up of catalytic units

suggestion: one. The device should be completely overhauled. 1. Dismantle and rebuild the pump. 2. Pressurize the pump, heat exchanger, and air-cooling inlet and outlet valves. 3. Heat exchanger pressure. 4. Both vessels and all towers are opened for inspection. 5. Pipeline and equipment thickness measurement. two. Pipeline equipment purging. three. Water and oil transportation.

I don’t know when the two-vessel oven, air tightness test, water pressure leakage, and water joint transportation were completed? If it is in the near future, just follow the start-up steps and pay attention to the heavy oil high-temperature pipeline, especially the flange sealing surface of the valve and the stuffing box. If it was two years ago, we would have to go back to the original construction plan.

1. Air sealing 2. Maintenance of unit and pump equipment 3. Lining inspection of two devices 4. Thickness measurement of oil slurry and heavy oil lines 5. Joint calibration of instruments

In this situation mentioned by the poster, I suggest that you strictly follow the commissioning procedures after the new device is built!

A few points to mention: 1. All inclined pipes must be tested before the final sealing of the two devices. 2. The valve passage of the special valve must be purged to ensure smooth flow. 3. Don’t forget to install the restrictor orifice plate. 4. Be sure to protect the plug valve when the temperature rises. It is best to keep an eye on it to prevent damage to the plug valve. Many places suffer from this. 5. The person responsible for heating the hot oil part must be responsible, otherwise there will be leaks in the future. 6. Drain the water when switching steam. It would be troublesome if the sintered catalyst blocked the riser.

It would be better if water transportation was not carried out before placement. It is recommended to re-check and clean the tower, container, etc., and then test the pressure again. Don't be careless.

Comprehensive inspection response to the start of construction - regeneration system 1. Thoroughly check the completion status of the renovation, rectification, and maintenance projects. Whether all disassembled and modified equipment and pipelines are fully assembled and disassembled, complete and usable, whether all pipeline connections are correct, and whether all are completed without missing items.； 2. Check whether the blind plates, manholes and orifice plates are assembled and disassembled correctly, and the flanges are in good condition. ； 3． Check whether the valves, flanges, gaskets, packing and bolts on the tower, container, cold exchange equipment and process pipelines are complete and intact ； 4． Check whether the fire protection facilities at each post are fully prepared ； 5. Check whether the nozzles of all pressure gauges are unobstructed, whether the pressure gauges have passed the inspection and are installed intact, and whether the pressure gauges and thermometers are complete. ； 6. Check that all valves are in the correct position as required, especially whether the normally open and normally closed valves are in the correct position, and the safety valves are installed at constant pressure according to regulations. ； 7. Check whether the pump is delivered for use, whether the lubricating oil is filled, and whether the cooling water of the pump is flowing smoothly. ； 8. Check whether the double-action slide valve, each electro-hydraulic slide valve, and one-way damping valve are installed correctly, debugged, and are flexible and easy to use. 9. Contact the instrument to jointly calibrate the self-protection system of the two devices, and record the action time of the self-protection control valve. 10. Contact the instrument to check whether all instrument control valves are calibrated and in good standby condition. 11. Check all feed nozzles to see if any loose points are clear and not blocked. 12. Before sealing the manhole, check whether the material legs of the rotary separators of the two devices are unobstructed, whether the wing valves are flexible and easy to use, and whether the equipment is installed correctly, and ensure that the debris in the two devices is clean. 13. Fresh catalyst tank, balance agent tank inspection ruler ； The metal passivator is ready for use. 14. Contact the instrument to install temporary temperature and pressure measurement points. 15. Check the process in detail and make preparations for water, electricity, steam, wind and liquefied gas