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Quick remediation and petroleum product recycling method and device for petroleum-contaminated soil through microwaves

A technology of oil pollution and microwave absorption, which is applied in the field of oil-contaminated soil remediation, can solve problems such as high cost, soil composition damage, and low efficiency, and achieve the effects of lower thermal desorption temperature, environmental friendliness, and high-efficiency separation

Active Publication Date: 2016-06-22
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a method and device for rapid microwave repair of oil-contaminated soil and oil recovery, which is used to solve the problems of low efficiency, Disadvantages such as high cost and soil composition damage

Method used

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  • Quick remediation and petroleum product recycling method and device for petroleum-contaminated soil through microwaves
  • Quick remediation and petroleum product recycling method and device for petroleum-contaminated soil through microwaves
  • Quick remediation and petroleum product recycling method and device for petroleum-contaminated soil through microwaves

Examples

Experimental program
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Effect test

Embodiment 1

[0052] The petroleum-contaminated soil with a moisture content of 5% and an oil content of 5% (weight percent) was placed in a reactor embedded with silicon carbide components (grid spacing 1 cm), and N 2 For gas, heat it up to 100°C with microwaves at a heating rate of 1K / s, and keep it for 5 minutes. After the oil-gas mixture is separated by the condenser, the obtained liquid enters the corresponding liquid collector, and the weight of the treated soil and liquid is weighed , the results are shown in Table 1.

Embodiment 2

[0054] The oil-contaminated soil with a moisture content of 10% and an oil content of 60% (weight percent) is placed in a reactor embedded with graphite components (grid spacing 3cm), and Ar gas is introduced at a heating rate of 5K / s. Use microwave to heat it up to 180°C, keep it for 20 minutes, continue to heat up to 270°C, keep it for 30 minutes, then raise the temperature to 350°C, keep it for 60 minutes, the oil and gas mixture is separated by the condenser, and the obtained liquid enters the corresponding liquid collector. The weight of the treated soil and liquid was weighed, and the results are shown in Table 1.

Embodiment 3

[0056] Put oil-contaminated soil with a water content of 30% and an oil content of 50% (weight percent) in a reactor with embedded iron oxide components (grid spacing 2cm), and feed He gas at a heating rate of 3K / s , use microwave to heat it up to 150°C, keep it for 30 minutes, continue to heat up to 240°C, keep it for 30 minutes, then heat it up to 300°C, keep it for 40 minutes, after the oil and gas mixture is separated by the condenser, the obtained liquid enters the corresponding liquid collector , weigh the weight of the soil and liquid after the resulting treatment, and the results are shown in Table 1.

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Abstract

The invention provides a quick remediation and petroleum product recycling method and device for petroleum-contaminated soil through microwaves. The quick remediation and petroleum product recycling method for the petroleum-contaminated soil through the microwaves comprises the steps that firstly, to-be-remedied petroleum-contaminated soil is placed into a reactor of a built-in microwave absorption assembly; secondly, inert gases are injected in to the reactor, the reactor is heated up to be at a specific temperature, heat is preserved for a period of time, petroleum-gas mixtures are made to be removed, and the remedied soil is obtained; and finally, after the petroleum-gas mixtures are separated through a multistage condenser, different fractions are collected and obtained. According to the quick remediation and petroleum product recycling method and device for the petroleum-contaminated soil through the microwaves, the petroleum-contaminated soil is processed through microwave heating, the method and device for the petroleum-contaminated soil are simple in process, short in procedure, easy to operate, short in production period, low in cost and suitable for processing medium-low concentration and sparingly volatile petroleum-contaminated soil; petroleum products are recycled, meanwhile, harmless treatment and crop second plowing of the petroleum-contaminated soil are achieved, and a novel solving way is provided for remediation and petroleum product recycling of the petroleum-contaminated soil.

Description

technical field [0001] The invention relates to a method and a device for remediating oil-contaminated soil, in particular to a method and a device for rapid microwave remediation of oil-contaminated soil and oil recovery. Background technique [0002] During its exploitation, transportation and utilization, oil will enter the atmosphere, water and soil through various channels, causing serious environmental pollution. After entering the soil, part of it may leave the soil through volatilization, leaching, biodegradation, etc., while the rest remains in the soil. Such soil is called soil polluted by crude oil and refined oil. Due to the relatively small density of oil, strong adhesion and low emulsification ability, it is easy to stick to soil particles in the soil, block the soil voids, and affect the permeability of the soil. Oil stains adhere to plant roots and form a mucous membrane, which hinders the absorption of nutrients and water by plant roots, causes root rot, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/06C10G1/02
CPCB09C1/06C10G1/02C10G2400/04
Inventor 孙予罕罗虎孔令照谭志超鲍利伟苗改王健健
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI