Application of mechanical vacuum technology in distillation unit<br>Huang Jiajun<br>Refining Department 1<br>Abstract: a large amount of steam will be consumed by adopting the full steam jet vacuum pumping scheme. Therefore, during the overhaul and reconstruction of the atmospheric and Vacuum Distillation Unit No.1 of Guangzhou Petrochemical Company, the combined vacuum pumping technology of "supercharger + primary steam + secondary machinery" will be changed to full mechanical vacuum pumping, and a cooler, nine Roots pumps, one condensate tank and related supporting processes will be added. After the revamping, the unit has been running continuously for more than one year, the decompression system runs smoothly, the vacuum degree meets the requirements of the process card, and the overall energy saving of the unit is 0.78kg standard oil / T crude oil, with remarkable energy saving effect.<br>Key words: Atmospheric and vacuum distillation; roots vacuum pump; full mechanical vacuum pumping<br>
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