Oil containing sludge three-phase separation equipment Oil containing sludge centrifugal separator Oil containing sludge dewatering process

Description :

　　Oil containing sludge three-phase separation equipment Oil containing sludge centrifugal separator Oil containing sludge dewatering process

　　Overview of the current situation of oily sludge: In the process of production in petrochemical enterprises, a large amount of oily sludge will be generated, which contains a large amount of organic matter such as oil and has a high water content, usually above 90%. If not treated and discharged, it will cause serious pollution to the environment. With people's increasing emphasis on environmental protection As one of the "three wastes", various petrochemical enterprises attach great importance to the treatment of "oil sludge".

　　1. Review of "Oil Mud" Treatment

　　Currently The treatment of oil sludge by domestic petrochemical enterprises mainly involves concentrating and dehydrating it, reducing its oil content, and then landfilling or other treatments. The process mainly involves solid-liquid separation So the moisture and oil content of the processed dry mud become indicators for measuring the effectiveness of the three mud treatment. The power plant of Lanzhou Petrochemical Company initially used vacuum filtration for the treatment of oil sludge. The method of entering the Chu incinerator for incineration; Due to the large amount of smoke and dust generated during the incineration process, which pollutes the environment and consumes a lot of energy, the method was later changed to concentrate the sludge cake produced by the filter machine for landfilling. Due to the high moisture and oil content of the mud cake produced after filtration by the filter machine, as well as the high labor intensity. To improve processing capacity and efficiency The factory introduced the three-phase horizontal screw centrifuge produced by the German company Fleetwerk in 1999 for the treatment of oil sludge. After nearly three years of operation, the effect was very significant.

　　2. Working principle of three-phase separation equipment for oily sludge

　　The three-phase horizontal screw centrifuge is mainly composed of a driving part, a rotating drum, and a screw conveyor Compact structure and small volume. Its operation is based on the principle of settlement Solid particles heavier than liquid weight precipitate out within a predetermined time. This principle can also be applied to two liquids that have a specific gravity difference and are immiscible. When the material enters the high-speed rotating drum The material rotates synchronously with the drum inside Due to different specific gravities, solid particles with higher specific gravities experience different centrifugal forces, followed by water and less contaminated oil. As a result, a concentric solid layer and two liquid layers are formed from the outside to the inside according to the magnitude of the centrifugal force received. The solid is pushed out by the screw conveyor, and the liquid is discharged from its respective liquid inlet. So the application of a three-phase spiral centrifuge can not only separate the solids in the three sludge, but also separate the dirty oil in the three sludge, that is, it can perform solid-liquid separation.

　　3. Application of oil sludge three-phase separation equipment in oil sludge treatment

　　The three-phase horizontal screw centrifuge has shown great superiority in the treatment of three sludge, as it can not only separate the solids in the sludge, but also separate the dirty oil in the sludge, which is incomparable to other separation methods. At the same time, the moisture and oil content of the dry mud treated by the three-phase horizontal spiral centrifuge decreased to varying degrees.

　　4. Performance characteristics of three-phase separation equipment for oily sludge

　　4.1 High safety and reliability

　　The separation system of the three-phase separation equipment for oily sludge also includes a dosing system and a feed pump. The entire system adopts an automatic control and interlock protection system. If there are abnormal situations such as overpressure, overheating, or shortage of chemicals or materials in the centrifuge, the centrifuge will automatically stop or give an alarm to prompt the operator, effectively preventing damage to the centrifuge and reducing the probability of shutdown. In addition, its rotating parts are fully sealed to prevent the rotating parts from causing harm to the operators.

　　4.2 Convenient operation

　　Only one person is needed to operate, reducing annual labor intensity and lowering labor costs. Due to the separation being carried out in a sealed state Low noise and minimal pollution have improved the operating conditions for employees.

　　4.3 Long maintenance cycle low energy consumption

　　Due to the reasonable design structure, good material wear resistance, smooth operation, and long maintenance cycle. Lishui Ruite has not undergone major repairs since its operation at the end of 1995, and all indicators have been tested to be normal. Due to the total power of the entire system being only 37.5K/h, processing each ton of sludge consumes 2.4W of electricity, resulting in low energy consumption. High economic benefits.

　　5. Application scope of three-phase separation equipment for oily sludge:

　　5.1 Treatment of oily sludge in refineries, oil tanks, and drilling

　　5.2 Recycling of animals/animal fats and oils

　　5.3 Separation of vegetable oil and olive oil

　　6. Summary and Overview of Lishui Ruichen Manufacturer:

　　The separation process with high labor intensity and energy consumption is inevitably replaced by more economical centrifugal liquid-solid separation methods for production development. Industrial production increasingly requires equipment that is compact, sealed, continuous in production, and has the characteristics of multifunctionality, high efficiency, and low maintenance. The three-phase spiral centrifuge is a new type of equipment that meets the requirements of modern separation equipment It has been applied in the treatment of oil sludge, improving the effectiveness of oil sludge treatment and meeting environmental protection requirements. At the same time, it can be applied to the separation of municipal sewage sludge and other solid-liquid and liquid-liquid separation projects.

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• Oil containing sludge three-phase separation equipment