Do you all know anything about the lubricating oil furfural refining unit?
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I would like to ask about the advantages and disadvantages of operating a furfural refining unit with an extraction column cycle and without one Also, when the device is shut down, is it okay not to recover furfural and just leave it in the system? What are the disadvantages of that? Everyone is encouraged to speak up and have lively discussions!
During the startup cycle, the extraction tower is usually bypassed; at this time, feed is first sent back to enable the two recovery units to operate, while material is fed into the extraction tower. Once the recovery process is functioning properly and the extraction tower is filled, the towers can be connected, which helps to speed up the startup process. In cases where a major shutdown of the plant requires the removal of materials, it is generally attempted to recover as much furfural and water-based solvents as possible from the system; however, the materials from the extraction tower are usually sent directly to the miscellaneous oil tank. This also shortens the time until work can resume again, as well as saving energy consumption. For more information, follow WeChat: Petrochemical Engineering Guest.
At startup, the extraction column cycle is generally not used; heating each of the two systems separately facilitates the startup process. The absence of an extraction column also helps with level control when the extraction column is introduced later on. If it’s not for maintenance, I usually don’t recover furfural here but keep it in the system; however, if the shutdown lasts too long, extracting oil from the system at the start up time afterward can have an impact on the residues remaining in it.