Method and apparatus for treating oily sludge

A sludge treatment and drying device technology, which is applied in the field of comprehensive utilization of solid waste resources, can solve the problems of difficult oil recovery, difficult dehydration of oily sludge, high energy consumption, etc., and achieves significant energy saving and environmental protection benefits, and improves the level of resource utilization , solve the effect of high energy consumption

Pending Publication Date: 2019-01-11
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0004] In order to overcome the defects and deficiencies of the prior art and solve the problems of difficult dehydration of oily sl

Method used

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  • Method and apparatus for treating oily sludge

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Effect test

Embodiment 1

[0058] An oily sludge treatment device, such as figure 1 As shown, it includes: screw conveying device 1, mixing device 2, forming device 3, belt conveying device 4, 1# inclined chute 5, rotary drum indirect drying device 6, gas burner 7, steam pipe 8, 1# fixed scraper Plate dust removal device 9, steam condensing device 10, water treatment system 11, gas pipeline 12, gas fan 13, 2# fixed scraper dust removal device 14, rotary cylinder indirect thermal analysis device 15, 2# inclined chute 16, oil gas Conveying pipe 17, oil and gas condensing device 18, oil recovery storage device 19, 3# inclined chute 20, indirect cooling rotary drum 21, 2# belt conveyor 22, biochar storage bin 23, 3# belt conveyor 24, integrated heating Furnace 25, flue gas pipe 26, flue gas tail gas purification device 27, flue gas fan 28, chimney 29;

[0059] Wherein, the screw conveying device 1 is arranged above the mixing device 2, the mixing device 2 is connected to the forming device 3, the forming d...

Embodiment 2

[0077] A method for treating oily sludge, wherein the oily sludge is ground oil sludge, tank cleaning sludge and scum bottom sludge produced in an industrial production process, preferably ground oil sludge, tank cleaning sludge and scum bottom sludge produced by an oil refinery or an oil production plant Bottom mud. The processing method is as follows:

[0078] Using the oily sludge treatment device in Example 1, the oily sludge is transported into the mixing device 2 through the screw conveyor 1, and mixed with the biochar transported by the 3# belt conveyor 24; mixing Afterwards, the material directly enters the molding device 3 for high-pressure molding and granulation, and the obtained mud ball particles are transported by the 1# belt conveying device 4, and enter the rotary drum indirect drying device 6 through the 1# inclined chute 5 for drying and dehydration treatment; The dried mud ball particles are exported from the indirect drying device 6 of the rotary drum, dro...

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Abstract

The invention relates to a method and an apparatus for treating oily sludge. The method comprises the following steps: mixing of biochar produced by pyrolysis of oily sludge with the oily sludge, molding, pyrolysis treatment, and drying and oil desorption in the same hearth in order to achieve efficient integrated gradient utilization of energy. The apparatus comprises a screw conveying device, amixing device, a shaping device, a belt conveying device, a revolving cylinder indirect drying device, a revolving cylinder indirect thermal desorption device, the integrated heating furnace, gas burners and the like. The method and the apparatus have the advantages of small investment, quick effect, simple and flexible process, low running cost, high practicability, large treatment scale, complete harmlessness, high recycling rate, high energy utilization rate, full embodiment of the concepts of circular economy and low-carbon economy, and significant social, economic and environmental benefits.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of solid waste resources, in particular to a method and device for treating oily sludge. Background technique [0002] With the further expansion of oilfield development, the total amount of oily sludge produced in the production process will continue to increase, and the pollution to the surrounding environment will become more and more serious. Comprehensive treatment is required to prevent environmental pollution. In crude oil extraction, most of the oily sludge comes from the ground treatment system. It is mainly composed of scale and corrosion products of pipelines or equipment, flocs produced by water purifiers, oily sludge produced by sewage treatment, and bacteria. The characteristics of this kind of sludge are: difficult dehydration, fine particles, high viscosity, and high oil content. These not only seriously affect the quality of crude oil exported to the outside world, but al...

Claims

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Application Information

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IPC IPC(8): C02F11/10C02F11/13C10B53/00C10G1/00
CPCC02F11/12C02F11/10C10B53/00C10G1/00
Inventor 余广炜汪印赖登国汪刚李智伟邢贞娇唐晓达
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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