Treatment method and complete equipment suitable for high-liquid-content oil-containing sludge

Abstract

The invention discloses a treatment method and complete equipment suitable for high-liquid-content oil-containing sludge. The complete equipment comprises an automatic control unit, a pretreatment feeding unit, an indirect thermal desorption unit, a discharge treatment unit connected with a high-temperature residue soil outlet of the indirect thermal desorption unit, a condensation unit connected with a desorption steam outlet of the indirect thermal desorption unit, a non-condensable gas treatment unit connected with an exhaust port of the condensation unit, a circulating water treatment unit connected with a water outlet of the condensation unit, and a cooler used for cooling circulating water in the circulating water treatment unit and inputting the cooled circulating water into the condensation unit. According to the method and the equipment, the characteristics of the high-liquid-content oil-containing sludge are combined, on the basis of an indirect thermal desorption principle, a reasonable equipment form and structure are adopted, stable and continuous conveying, heating, purifying and discharging processes of the high-liquid-content oil-containing sludge are ensured, the TPH content of the treated muck can be smaller than 1%, secondary pollution is avoided, harmlessness of the oil-containing sludge is achieved, and meanwhile, 70% or above of oil in the oil sludge is recovered.

Description

technical field [0001] The present invention relates to a treatment method and a complete set of equipment suitable for high liquid and oily sludge, more specifically, relates to a treatment method suitable for high liquid and oily sludge produced in the production process of oil fields, refining and chemical industries. The treatment device can realize the recycling, reduction and harmless treatment of high liquid and oily sludge. Background technique [0002] The oily sewage produced in the process of petroleum processing will produce a large amount of oily sludge during the treatment process, including the bottom sludge of the grease trap, the scum of the air flotation machine and the remaining activated sludge, which are usually referred to as "three sludges". Each sewage plant adds flocculants in the flotation process, forming a large amount of oily scum. These scums typically have a moisture content of up to 95%. And it is extremely difficult to dehydrate, resulting ...

AI Technical Summary

Problems solved by technology

In the actual treatment of oily sludge, due to the high viscosity of the oil component, it is easy to cause damage and deformation of the drying equipment, and it is difficult to achieve long-term stable operation of industrialization

In summary, there are various limitations in existing treatment methods for refining oil sludge

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