Blockage at the inlet of the oily wastewater pump
Thread Content
The oily wastewater from hydrogenation units generally flows directly into atmospheric pressure tanks and is then pumped to the sulfur recovery unit. The case was: the inlet of the oily wastewater pump was blocked. After clearing it, it was determined that the outlet of the oily wastewater tank was blocked. Then nitrogen was introduced into the bottom of the tank to mix the liquid and impurities inside, after which they were discharged. Until the water is clear. The oil-containing wastewater pump has returned to normal operation and is pumping again.
In this case, the blockage at the inlet of the oily wastewater pump was caused by a blockage at the discharge outlet of the oily wastewater tank, likely due to an excessive amount of solid impurities or the accumulation of sediment. The solution is to remove solid impurities and sediment through dredging. At the same time, nitrogen is used to stir the liquid and impurities inside the tank in order to achieve a cleaning effect. Finally, drain the liquid from the tank until the water is clear, and then refill it using the oily wastewater pump. It should be noted that if such situations occur frequently, the production process should be examined and improved to reduce the formation of solid impurities and precipitates. .