Optimize processes to save nitrogen and reduce consumption

Recently, Guangzhou Petrochemical No.
2 reforming unit can save nearly 50 cubic meters of nitrogen per hour by optimizing the process of regeneration gas drying system, and the effect of nitrogen saving and consumption reduction is obvious
.

The circulating gas in the scorched area of the catalyst regeneration system of the No.
2 reforming unit realizes the "dry and cold" cycle after heat exchange, cooling and drying and dehydration, and prolongs the service life
of the catalyst.
However, when the liquid level of the drainage tank of the regeneration gas drying system reaches a certain height, manual drainage is required, an average of about 4 times a day, which not only increases the labor intensity of the team members, but also discharges the nitrogen in the system, resulting in nitrogen loss
.

To this end, the company's technicians repeatedly checked the on-site equipment and pipelines by reviewing the data, and found that the drainage process of the drainage tank could be optimized and rectified
.
After risk assessment and technical analysis, they decided to add a hydrophobic system to the drainage tank, add shut-off valves and traps to the front line of the process, and use the density difference between condensate and nitrogen to achieve automatic discharge and steam drainage through condensate level changes to avoid direct discharge and loss of nitrogen
.
At the same time, they added shut-off valves to the auxiliary line to control emissions
during manual operation.

"After the process optimization and transformation, we only need to pay attention to the on-site liquid level during the inspection, which not only reduces the workload, but also saves nitrogen
.
" Gong Chaolian, the company's device operator, said
.