The invention discloses a pre-
treatment system for
acid water of an
oil refinery, which is mainly composed of three
acid water storage tanks connected in sequence, two water seal tanks, two sets of
impurity and oil removing devices and one set of
acid water gas ejecting, degassing and deodorization device 6. The three acid
water storage tanks comprise an
impurity and oil removing tank 1, a stabilizing tank 2 and a stripping
tower feeding tank 3. The two water seal tanks comprise a
positive pressure water seal tank 4 and a safe water seal tank 5. The two sets of
impurity and oil removing devices comprise a tank-in-tank oil and impurity removing device 7 and a
rotational flow oil removing device 8. The three-tank two-water-seal oil removing deodorization combination technology flow is one set of complete, refining and advanced acid water pre-treatment technology. The pre-
treatment system can enable
raw material water pre-treating processes and results to meet technology production requirements and safety and environment-friendly requirements. Therefore, safety and environment-friendly problems bothering people for many years in the aspects of pretreatment for the acid water of the
oil refinery are solved thoroughly, and a gap in the aspect of acid water pretreatment technology
standardization in our country is filled.