Crude oil purification system and oil storage tank cleaning system

Abstract

The invention discloses a crude oil purification system and an oil storage tank cleaning system. The crude oil purification system includes: an oil collection and preparation chamber for demulsifying and stirring hot water and oil containing crude oil transported from the oil storage tank to form a mixture ; the first-level air flotation treatment chamber for preliminary separation of the mixture delivered from the oil-collecting preparation room under the action of air flotation; the second-level air flotation treatment room for the deep separation of the mixture delivered from the first-level air flotation treatment room under the action of ultrasonic waves The first-level ultrasonic treatment room; the third-level air flotation ultrasonic treatment room for the final separation of the mixture delivered from the second-level ultrasonic treatment room under the joint action of ultrasonic waves and air flotation; the separation of the mixture delivered from the third-level air flotation ultrasonic treatment room centrifuge for residue. The invention realizes the cleaning and discharge of the tank bottom residue when cleaning the oil storage tank, thereby increasing the oil storage space of the oil storage tank and improving the quality of stored crude oil.

Description

technical field [0001] The invention relates to oil storage technology, in particular to a crude oil purification system and an oil storage tank cleaning system. Background technique [0002] During storage, a small amount of mechanical impurities, sand, soil, heavy metal salts, and heavy oily components such as paraffin and asphaltene in crude oil will naturally deposit at the bottom of the tank due to poor specific gravity, forming a black and thick gel The material layer reduces the effective capacity of the oil storage tank and affects the normal use of the oil storage tank. Therefore, oil storage tanks need to check the corrosion of the bottom of the tank regularly, replace the anode protection, replace the seal, replace the coil, repair the storage tank accessories, and the sludge in the tank must be removed. According to the world practice, the cleaning period of petroleum storage tanks is 6-8 years. The standard for cleaning petroleum storage tanks in my country is ...

AI Technical Summary

Problems solved by technology

[0012] In view of this, the present invention provides a crude oil purification system and an oil storage tank cleaning system, so as to separate the moisture and impurities at the bottom of the oil storage tank when cleaning the oil storage tank, increase the oil storage space of the oil storage tank, and improve The quality of stored crude oil solves the problem that the existing technology cannot separate the water and impurities at the bottom of the oil storage tank, which affects the quality of crude oil, causing difficulty in crude oil transportation and frequent blockage of filters, and reduces the utilization rate of storage tanks and increases the number of cleanings of oil storage tanks and difficulty of cleaning

Images