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Oily sludge innocent treatment system and treatment method thereof

A technology of harmless treatment and treatment method, which is applied in sludge treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., and can solve the problems of complex extractant components, increased treatment costs, and complex preparation processes. , to achieve the effects of moderate process conditions, low cost and simple preparation process

Pending Publication Date: 2020-02-28
HUNAN CHANGLING PETROCHEM SCI & TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process of the extractant is complicated, and the main agent, auxiliary agent and auxiliary agent need to be mixed in a certain proportion, and heated and stirred under a certain pressure, resulting in a high cost of the extractant
At the same time, due to the complex components of the extractant, it is difficult to recover the solvent in the later stage, which further increases the processing cost

Method used

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  • Oily sludge innocent treatment system and treatment method thereof
  • Oily sludge innocent treatment system and treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] see figure 1 , The feeding method in this embodiment 1 is continuous feeding, and the number of stirring tanks 7 is three. A harmless treatment system for oily sludge, comprising a vacuum drying system 5 , a feed mixing system 1 connected in sequence, a solid-liquid two-phase separation system 2 , an oil-water separation system 3 , and an extraction agent recovery system 4 . The solid-liquid two-phase separation system 2 communicates with the vacuum drying system 5 . The vacuum drying system 5 communicates with the oil-water separation system 3 . Extractant recovery system 4 communicates with feed stirring system 1 .

[0058] Wherein, the feed stirring system 1 includes an oily sludge inlet 6 , three stirring tanks 7 , and an extraction agent storage tank 8 . The extractant storage tank 8 communicates with each stirring tank 7 .

[0059] Wherein, the solid-liquid two-phase separation system 2 includes three centrifuges 9 .

[0060] Such as figure 1 , in this embod...

Embodiment 2

[0084] see figure 2 , the present embodiment 2 is intermittent feeding, and the number of stirring tank 7 is one. A harmless treatment system for oily sludge, comprising a vacuum drying system 5 , a feed mixing system 1 connected in sequence, a solid-liquid two-phase separation system 2 , an oil-water separation system 3 , and an extraction agent recovery system 4 . The solid-liquid two-phase separation system 2 communicates with the vacuum drying system 5 . The vacuum drying system 5 communicates with the oil-water separation system 3 . Extractant recovery system 4 communicates with feed stirring system 1 .

[0085] Wherein, the feeding stirring system 1 includes an oily sludge inlet 6, a stirring tank 7, and an extraction agent storage tank 8, and the extraction agent storage tank 8 and the stirring tank 7 are all connected.

[0086] Wherein, the solid-liquid two-phase separation system 2 includes a centrifuge 9 .

[0087] Specifically, the stirring tank 7 is connected ...

Embodiment 3

[0115] In Example 3, the oily sludge harmless treatment system and treatment method in Example 1 were adopted, and a petrochemical company cleared tank #1 oil sludge (oil content 27.8%, water content 19.3%) was used as raw material for the test, and the extractant The components include n-butyl acetate and water, wherein the volume ratio of n-butyl acetate to water is 1:0.5, mixed and stirred evenly. The extractant and the oily sludge in the first stirring tank 7 were mixed and stirred evenly according to the mass ratio of 1:1, and implemented according to the treatment method in Example 1. After the treatment, the oil content of the sludge was 0.24%, and the oil removal rate was 99.54%.

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Abstract

The invention relates to an oily sludge innocent treatment system and a treatment method thereof. The oily sludge innocent treatment system comprises a vacuum drying system, a feeding stirring system,a solid-liquid two-phase separation system, an oil-water separation system and an extractant recovery system, and the solid-liquid two-phase separation system is communicated with the vacuum drying system. And the vacuum drying system is communicated with the oil-water separation system. And the extractant recovery system is communicated with the feeding and stirring system. The extracting agentcomprises butyl acetate and water, the extracting agent is simple in preparation process, low in cost, small in dosage and high in safety, the extracting agent can be recycled, and after the extracting agent is used for treatment, the oil content in the oily sludge meets the national relevant standard requirement (the oil content is smaller than or equal to 0.3%). In the treatment process of the oily sludge, secondary pollution cannot be generated, and the purposes of reduction, harmlessness and recycling of the oily sludge are achieved; meanwhile, in the implementation process of the treatment method, process conditions are mild, and operation is safe.

Description

technical field [0001] The invention belongs to oily sludge treatment technology, in particular to a harmless treatment system and treatment method for oily sludge using butyl acetate as an extractant. Background technique [0002] At present, the annual output of oily sludge and refining "three muds" in oil fields exceeds 1 million tons, which are hazardous wastes. It mainly comes from oil extraction, transportation, refining and oily sewage treatment. Research has found that oily sludge has been included in the National Hazardous Waste List (HW-08) because it contains some toxic and harmful anions and heavy metals with radiation sources. At present, the main methods of sludge treatment are: traditional landfill method, incineration method, heat treatment method, coking method, biological method and solvent extraction method. [0003] The traditional burial method can only deal with the sludge with low oil content, heavy metal element content and water content. For most o...

Claims

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Application Information

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IPC IPC(8): C02F11/00C10G1/04
CPCC02F11/00C10G1/04
Inventor 王祥黄华姚飞沈鹏飞康之军佘喜春
Owner HUNAN CHANGLING PETROCHEM SCI & TECH DEV CO LTD
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