Oily sludge treatment process and treatment system

Abstract

The invention provides an oily sludge treatment process and a treatment system. The treatment process comprises the following steps: transporting oily sludge into the field and storing; preparing clean water and heating the clean water to hot water at above 70 DEG C; adding hot water into the stored oily sludge for diluting, screening and then cleaning and crushing the diluted oily sludge; cleaning mud, dosing the crushed materials and then stirring and performing solid sludge separation, thereby acquiring primary slurry and primary dirty oil; performing filter pressing treatment on the primary slurry, thereby acquiring a solid-phase material and a liquid-phase material; adding water into the primary dirty oil and performing primary oil water separation, thereby acquiring primary sewage and primary dirty oil; returning the primary sewage to the slurry cleaning process for use and storing the primary dirty oil; cleaning and purifying the solid-phase material, thereby acquiring a purified material, adding accessories and preparing into a brick and storing; and returning the liquid-phase material to the step of primary oil water separation and treating. The oily sludge treatment process provided by the invention adopts the idea of innocent treatment and zero emission, is capable of realizing the innocent treatment for the oily sludge and is capable of effectively preventing the damage and pollution to the environment.

Description

technical field [0001] The invention relates to the technical field of oily sludge treatment in oil fields, in particular to an oily sludge treatment process. At the same time, the invention also relates to an oily sludge treatment system. Background technique [0002] In oil mining enterprises, the crude oil produced by a single well every day will be transported to the crude oil storage tanks in the metering station or intermediate transmission station through pipelines. During the long-term storage process, the sediment contained in the crude oil storage tanks will settle into the tank At the end, it will reduce the storage capacity of crude oil storage tanks over time. Therefore, when the sediment in the crude oil storage tank is deposited to a certain amount, it must be cleaned once. The oily sludge cleaned out has a high content of crude oil. Due to the large amount of oily sludge, it cannot be stored in large quantities, and there are safety hazards such as fire haza...

AI Technical Summary

Problems solved by technology

Therefore, when the sediment in the crude oil storage tank is deposited to a certain amount, it must be cleaned once. The oily sludge cleaned out has a high content of crude oil. Due to the large amount of oily sludge, it cannot be stored in large quantities, and there are safety hazards such as fire hazards. Landfilling will also cause secondary pollution and damage to the environment

[0003] In addition, a certain amount of crude oil will also be discharged during the oil well testing process. In the past, the nearby pits were dug to discharge the oil, and then the oil was pulled away by tank trucks. However, the residual crude oil in the pits will also cause damage and impact on the environment.

[0004] At present, there is no better purification treatment method for this oily sludge, and it cannot be returned to the soil for burial, which brings great troubles to oil production enterprises

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