High-water-content oil sludge reconstruction method

A water-oil and oil-sludge technology, applied in chemical instruments and methods, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc., can solve equipment maintenance costs, depreciation costs and high treatment costs, and easy equipment Problems such as coking and blockage, flammability and explosion, etc., achieve the effect of significant resource utilization, small investment, and low safety risk

Active Publication Date: 2021-04-16
SHENZHEN KELADA FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solvent extraction method, a large amount of extraction agent is used in the solvent extraction process, the cost is high, and the equipment maintenance cost, depreciation cost and processing cost in the process are relatively high; the drying reduction method is only a pure reduction method, due to the The water is mainly in the emulsified state, so it is difficult to dehydrate, and there are also problems of flammability and explosion, and the equipment is easy to coke and block

Method used

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  • High-water-content oil sludge reconstruction method
  • High-water-content oil sludge reconstruction method
  • High-water-content oil sludge reconstruction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The sample treated in this example is high water content oil sludge (moisture content 88.74%, oil content 7.79%, solid content 3.47%) of a petrochemical plant in Lanzhou

[0048] In this example S1, weigh 300 g of the above-mentioned high-water-containing oil sludge and 135 g of special phase-transfer agent into a 1000 ml flask with stirring, raise the temperature to 50 ° C, and stir at a speed of 80 rpm for 10 minutes to obtain an evenly mixed water-containing oil sludge in an unstable state Pickering-like emulsion system;

[0049] In this example S2, 435 g of the unsteady high-water-containing oily sludge Pickering emulsion system obtained by uniform mixing containing a phase transfer agent prepared in S1 was put into a homogenizer and homogenized for 5 minutes at a temperature of 50 ° C and a shear rate of 5000 rpm. , to obtain an unsteady homogeneous oil-based suspended solids system; after centrifugation, 184.2 g of oil sludge was obtained.

[0050] The oil sludge o...

Embodiment 2

[0053] The sample treated in this example is a high water content oil sludge (water content 68.58%, oil content 16.81%, solid content 14.61%) of a petrochemical plant in Jiujiang

[0054] In this example S1, weigh 300g of the above-mentioned high-water-content sludge and 135g of special phase-transfer agent into a 1000ml flask with stirring, raise the temperature to 50°C, and stir for 10 minutes at a rotation speed of 80rpm to obtain an unsteady high-water-content mixture evenly mixed. Oil sludge Pickering emulsion system;

[0055] In this example S2, 435 g of the unsteady high-water-containing oily sludge Pickering emulsion system obtained by uniform mixing containing a phase transfer agent prepared in S1 was put into a homogenizer and homogenized for 3 minutes at a temperature of 50 ° C and a shear rate of 8000 rpm. , to obtain an unsteady homogeneous oil-based suspended solids system; after centrifugation, 217.8 g of oil sludge was obtained.

[0056] The oil sludge obtaine...

Embodiment 3

[0058] Embodiment 3: The sample treated in this embodiment is a high water content oil sludge (water content 68.58%, oil content 16.81%, solid content 14.61%) of a petrochemical plant in Jiujiang

[0059] In this example S1, weigh 300g of the above-mentioned high-water-content sludge and 135g of special phase-transfer agent into a 1000ml flask with stirring, raise the temperature to 50°C, and stir for 10 minutes at a rotation speed of 80rpm to obtain an unsteady high-water-content mixture evenly mixed. Oil sludge Pickering emulsion system;

[0060] In this example S2, 435 g of the unsteady high-water-containing oily sludge Pickering emulsion system obtained by uniform mixing containing a phase transfer agent prepared in S1 was put into a homogenizer and homogenized for 5 minutes at a temperature of 50 ° C and a shear rate of 5000 rpm. , to obtain an unsteady homogeneous oil-based suspended matter system; after centrifugation, 221g of oil sludge was obtained.

[0061] The oil ...

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Abstract

The invention is suitable for the field of high-water-content oil sludge treatment, and provides a high-water-content oil sludge reconstruction method which comprises the steps: S1, adding high-water-content oil sludge and a phase transfer agent to a mixer, and uniformly mixing to obtain an unsteady high-water-content oil sludge Pickering emulsion system; s2, carrying out water and oil phase transfer on an unsteady high-water-content oil sludge Pickering emulsion system through pipeline type shearing equipment, and transferring water and oil into a phase transfer agent to be mutually dissolved together, suspended solids in the unsteady high-water-content oil sludge Pickering emulsion system are also converted into small particles with uniform sizes from different particle sizes under the action of the pipeline type shearing equipment, so that the unsteady high-water-content oil sludge Pickering emulsion system is converted into an oil suspended solid system, namely, the high-water-content oil sludge is reconstructed. After system reconstruction, the high-water-content oil sludge is more beneficial to subsequent separation and drying treatment, and the reduction effect is more remarkable.

Description

technical field [0001] The invention belongs to the field of high water content oil sludge treatment, in particular to a method for reconstructing high water content oil sludge. Background technique [0002] During the wastewater treatment process of the refinery, a large amount of grease trap bottom sludge, air flotation tank scum, biochemical tank residual activated sludge, etc. will be produced, among which the air flotation tank scum occupies the largest proportion, which contains solid suspended matter, emulsified oil and tiny Air bubbles, these sludges are suspended in the sewage, and are usually treated by sludge thickening tank concentration-centrifugal dehydration and then transported to landfill or re-smelting, incineration and other methods for disposal. This kind of oil sludge after preliminary centrifugal dehydration by centrifuge has complex organic components, high water content, good stability, and difficult treatment. It is still a high water content oil slu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14C02F11/00C02F11/127C02F11/13
Inventor 段征宇张运晟徐菊花曾钦航
Owner SHENZHEN KELADA FINE CHEM CO LTD
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