Medium-liquid-content oil sludge cracking treatment device and process

Abstract

The invention discloses a medium-liquid-content oil sludge cracking treatment device, which comprises a desorber and a cracker; the desorber is arranged on the upper side of the cracker, the desorber is connected with the cracker through a pipeline, and pretreatment, drying dehydration, low-temperature desorption and high-temperature cracking technologies are adopted to improve the liquid-containing oil sludge treatment capacity; a sectional indirect heating mode is adopted, the pyrolysis temperature is controlled according to material properties, the special requirements of different stages for heat and temperature in the pyrolysis process are met, graded echelon efficient utilization of heat is achieved, and the operation cost is effectively reduced; the equipment adopts a large-torque and plastic-resistant design, is particularly suitable for high-viscosity and high-plasticity materials, strengthens heat transfer between a heat medium and the materials by adopting an internal and external heating mode and mutual meshing and stirring, has a self-cleaning function structurally, prevents the materials from being adhered to a wall surface and blades to cause the problems of coking, blockage and the like, and long-period stable and safe operation of the system is facilitated; the production process is in an inert environment, dioxin is not generated, and secondary pollution is avoided.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a cracking treatment device and process for medium-liquid oily sludge. Background technique [0002] Oily sludge refers to sludge mixed with heavy oil such as crude oil, various refined oils, and residual oil. Oily sludge is harmful to the human body, harmful to plants and aquatic organisms. The oil and gas evaporated in the air can irritate the skin, eyes and respiratory organs, and make the land lose the function of plant growth. It is difficult to deal with and repair. It is the main oil and petrochemical industry. one of the hazardous pollutants. [0003] It is estimated that the output of sludge in major domestic oil fields is quite large, accounting for about 2% of the total output of crude oil, and the content of crude oil in sludge is about 10% to 30%. There are more than 100,000 tons of crude oil in sludge every year. Among them, it has not been utilized, result...

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Problems solved by technology

[0008] At present, thermal desorption devices at home and abroad have various problems such as coking, substandard treatment, clogging, and inflexible treatment scale. For example, the process using rotary kiln as the core device generally has large dust, low oil recovery rate and poor quality. , pipeline blockage and other problems, which cannot be solved; using single auger equipment, there are common problems such as coking and substandard treatment, which cannot be solved

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