How should facilities that have not been in operation for a long time be managed? ?
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The petroleum refining industry is currently in a downturn, with plants not operating for long periods of time. How do you manage such plants, and how do you carry out maintenance work on them? How can we ensure that the device remains in good condition and ready for use over long periods of time without being in operation? ? ? ? ? ? ? ? ?
Carry out maintenance regularly in accordance with the equipment maintenance procedures.
Moving equipment is turned daily, while stationary equipment and main pipelines are overhauled; after purging, nitrogen is filled in. Bolt oil maintenance.
Each device requires specific analysis; they are not all the same
You can refer to http://bbs.hcbbs.com/thread-996822-1-1.html; we also stopped for two years back then!
The nitrogen protection pressure cannot be maintained! ! It needs to be pressurized continuously or frequently! It is recommended to use diesel, kerosene, dark diesel, etc. as protective agents in the system to reduce corrosion and to facilitate the establishment of a circulation cycle sooner. Hehe, I’m not sure if what I said is correct
Moving equipment is turned daily, while stationary equipment and main pipelines are overhauled; after purging, nitrogen is filled in. Bolt oil maintenance.
1. Stop the operation in order to carry out a thorough inspection of the entire installation. 2. Purge all pipelines – steam lines, water lines, circulating water lines, condensate lines, and drain lines; after draining the water, purge them sequentially using air. 3. It is advisable to fill the tower equipment with nitrogen for protection; if circulation is possible, it is better to use that method rather than removing oil. 4. Disconnect the pumps and drain any water remaining in the inlet and outlet pipelines. Carry out regular maintenance, and ensure that large-scale units are prepared for periodic rotation. 5. It is important to take measures to prevent freezing and condensation, especially for some critical equipment
1. Dynamic equipment such as pumps should be rotated daily, and centrifugal compressors should preferably be maintained in accordance with the manufacturer’s guidelines； 2. Ensure there is no water in the pipeline, use nitrogen for protection, and regularly check the nitrogen pressure ； 3. After draining the condensate from units such as distillation towers and absorption towers, fill them with nitrogen gas. I’m not sure whether the top and bottom covers of the coke tower are operated automatically or manually. If they are automatic, they should be opened regularly; if they are manual, it’s necessary to ensure that those large bolts are properly lubricated to prevent rusting. This is just my humble opinion, meant for your reference only
For units that have not been in operation for a long time, special attention should be paid to this corrosion issue. Especially for devices that do not allow for material return, the sulfur content in the raw materials is quite high these days.