CN105689381A - Quick remediation and petroleum product recycling method and device for petroleum-contaminated soil through microwaves - Google Patents
Quick remediation and petroleum product recycling method and device for petroleum-contaminated soil through microwaves Download PDFInfo
- Publication number
- CN105689381A CN105689381A CN201610044637.XA CN201610044637A CN105689381A CN 105689381 A CN105689381 A CN 105689381A CN 201610044637 A CN201610044637 A CN 201610044637A CN 105689381 A CN105689381 A CN 105689381A
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- Prior art keywords
- oil
- petroleum
- microwave
- polluted soils
- reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/02—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by distillation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/04—Diesel oil
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
The present invention relates to method and device that a kind of soil contaminated by crude oil is repaired, particularly relate to a kind of oil-polluted soils microwave and quickly repair the method with Oil Recovery and device。
Background technology
Oil is exploited at it, is transported and utilize in process, can enter air, water body and soil by all means, cause serious environmental pollution。After entering soil, a part may be passed through volatilization, leaching, biodegradation etc. and depart from soil, and remainder remains in soil, and such soil is called by crude oil and product oil contaminated soil。Owing to oil density is smaller, adhesion strength is strong and emulsifying capacity is low, and in soil, easy and grogs adhesion, blocks interstices of soil, affect the permeability of soil。Greasy dirt adheres on root system of plant, can form one layer of mucosa, hinders root system of plant that nutrient and moisture are absorbed, and causes root system to rot, affects crop growth；Oil can be combined with inorganic nitrogen phosphorus, causes soil available N and P amount to reduce, affects crop field alimentation。Substantial amounts of oil enters soil, soil microorganism is had inhibitory action, soil enzyme activities also has inhibitory action。It addition, after petroleum substance feeding soil, in soil, crop each several part residual, make the quality of grain decline。Polycyclic aromatic hydrocarbon in oil has the effects such as carcinogenic, teratogenesis, mutagenesis, and can be enriched with step by step in animal and plant body by food chain, thus remote-effects health；Petroleum hydrocarbon not easily can be penetrated into subsoil water by the part of adsorption by soil, pollute shallow underground water environment, affect the quality of drinking water, be finally detrimental to health。Meanwhile, the oil content containing soil is generally 10～60%, is the secondary petroleum resources of a kind of preciousness, it is reclaimed and recycling, it is possible to improve the utilization rate of oil to greatest extent, reduces the pollution to soil simultaneously。Seek the processing method of economically viable oil-contaminated soil, improve reliability and the efficiency of conventional processes, it is achieved oil-contaminated soil resource and innoxious efficient process, realize the development trend that soil remediation is oil-contaminated soil treatment technology simultaneously。Oil-polluted soils treatment technology includes bioanalysis, chemical method and Physical, and wherein Chinese patent CN105170644A adopts oil degradation bacteria rehabilitating soil, and repairing efficiency is long, and process conditions are comparatively harsh。CN105149338A adopts solvent method, adds irradiation ultraviolet radiation after solubility ferrous iron solution and persulfate solution in oil-polluted soils, and the method cost is high, complex process, relates to drying cost and the nutrition leak problem of soil。CN103894411A uses charcoal remedying oil-polluted soils, and efficiency is low, and repairing efficiency is longer。CN204262047U adopts thermal desorption to carry out oil-polluted soils reparation, and tradition electrical heating heat transfer efficiency is low, is also not directed to Oil Recovery and utilization simultaneously。People are by microwave technique application to the process containing soil in recent years, utilize the mode of heating of its uniqueness, and the heats of efficient quick processes contaminated soil, make the pollutant in soil be collected, destroy or fixing, reach the purpose of soil remediation simultaneously。
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of oil-polluted soils microwave and quickly repair the method with Oil Recovery and device, the inefficiency that exists during for solving to process in prior art oil-polluted soils, cost height, the shortcoming such as soil constitution destruction。
For achieving the above object and other relevant purposes, the present invention provides a kind of oil-polluted soils microwave quickly to repair the method with Oil Recovery, and described method at least includes:
1) oil-polluted soils to be repaired is placed in the reactor of embedded microwave absorption assembly；
2) pass into noble gas, reactor is warming up under specified temp and keeps a period of time, make gas mixture remove, it is thus achieved that the soil after reparation；
3) by described gas mixture through multi-stage condensing device, collect after separation and obtain different fractions。
Preferably, the material of described microwave absorption assembly is carborundum, petroleum coke, charcoal, graphite or ferrum oxide。
Preferably, described microwave absorption assembly is integral grid structure, is spaced apart 1～3cm between described grid。
Preferably, in described oil-polluted soils to be repaired, moisture content is 5～30%, and oil content is 5～60%。
Preferably, described step 2) described in the heating rate of reactor be 1～5K/s, holding temperature is for ranging for 100～350 DEG C, and temperature retention time ranges for 5～60min。
Preferably, described step 2) in heat up for once heat up or gradient increased temperature mode。
Preferably, described step 2) for gradient increased temperature mode, first it is warming up to 150～180 DEG C with the heating rate of 1～5K/s, after insulation 5～60min, it is warming up to 240～270 DEG C again with the heating rate of 1～5K/s, it is incubated 5～60min again, is finally warming up to 280～350 DEG C with the heating rate of 1～5K/s, be incubated 5～60min。
Preferably, remove components different in described gas mixture by different microwave heating temperature, corresponding condenser is opened simultaneously, collect the fraction after separating。Preferably, described noble gas is N2, Ar or He。
The present invention provides a kind of oil-polluted soils microwave quickly to repair the device with Oil Recovery, is used for realizing said method, and described device at least includes:
Multi-stage condensing device that the soil catcher that the reactor of embedded microwave absorption assembly is connected with described reactor is connected with described reactor, the oil product catcher being connected with each condenser respectively。
As it has been described above, the oil-polluted soils microwave of the present invention quickly repairs the method with Oil Recovery and device, have the advantages that
1, by directed energy supply selective reinforcement oil product heating process, significantly reduce thermal desorption temperature, complete the efficient fast eliminating of oil product in petroleum-contaminated soil in a mild condition。
2, the undulatory property of microwave, high frequency and penetrance can destroy oil mixing with water system, are conducive to oil-water separation and thermal desorption process, achieve the high efficiency separation of lightweight petrol and diesel oil and heavy oil residue in Temperature Programmed Processes。
3, the soil after Low Temperature Heat Treatment can keep original trophic component and quality architectural characteristic。
4, according to oil-polluted soils characteristic, it is possible to selectivity carries out petroleum-contaminated soil reparation and utilizes with Oil Recovery。
5, present invention process is simple and convenient, flow process short easily operated, environmental friendliness, security of system are reliable。
Accompanying drawing explanation
Fig. 1 is that oil-polluted soils microwave of the present invention quickly repairs the method flow diagram with Oil Recovery。
Fig. 2 is the device schematic diagram that oil-polluted soils microwave of the present invention quickly repairs with Oil Recovery。
Element numbers explanation
S1～S3 step
1 microwave absorption assembly
2 reactors
3 soil catchers
4 first order condensers
5 first order oil product catchers
6 second level condensers
7 second level oil product catchers
8 third level condensers
9 third level oil product catchers
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention being described, those skilled in the art the content disclosed by this specification can understand other advantages and effect of the present invention easily。The present invention can also be carried out by additionally different detailed description of the invention or apply, and the every details in this specification based on different viewpoints and application, can also carry out various modification or change under the spirit without departing from the present invention。
Refer to accompanying drawing。It should be noted that, the diagram provided in the present embodiment only illustrates the basic conception of the present invention in a schematic way, then assembly that in graphic, only display is relevant with the present invention but not component count when implementing according to reality, shape and size drafting, during its actual enforcement, the kenel of each assembly, quantity and ratio can be a kind of random change, and its assembly layout kenel is likely to increasingly complex。
As it is shown in figure 1, the present invention provides a kind of oil-polluted soils microwave quickly to repair the method with Oil Recovery, described method at least includes:
S1, is placed in oil-polluted soils to be repaired in the reactor of embedded microwave absorption assembly；
S2, passes into noble gas, is warming up under specified temp by reactor and keeps a period of time, makes gas mixture remove, it is thus achieved that the soil after reparation；
S3, by described gas mixture through multi-stage condensing device, collects after separation and obtains different fractions。
The oil-polluted soils microwave specifically describing the present invention below in conjunction with accompanying drawing quickly repairs the method with Oil Recovery, and operating process is as follows:
Oil-polluted soils is entered in the reactor 2 of embedded microwave absorption assembly 1, with microwave for thermal source, by oil-polluted soils ramped heating schedule to 100～350 DEG C under atmosphere of inert gases, and keep 5～60min, making gas mixture remove gradually, the soil after process enters soil catcher 3；Gas mixture obtains the fractions such as gasoline, diesel oil and residual oil after three grades of condensers 4,6,8 separate, and enters corresponding three grade oil product catcher 5,7,9。Measure the soil after heat treatment and oil quality, calculate oil-polluted soils removing oil rate after microwave combustion method, and analyze the composition of gained liquid。
As shown in Figure 2, the present invention also provides for a kind of oil-polluted soils microwave and quickly repairs the device with Oil Recovery, for the method realizing above-mentioned reparation and recovery, described device includes: the reactor 2 of embedded microwave absorption assembly 1, soil catcher 3, multi-stage condensing device 4,6,8 and oil product catcher 5,7,9。
Described microwave absorption assembly 1 can absorb microwave energy and microwave energy passes to soil to be repaired quickly and evenly, to strengthen the heating process of oil product。
The material of described microwave absorption assembly 1 can be carborundum, petroleum coke, charcoal, graphite or ferrum oxide etc., it is of course also possible to be the material that other are suitable, does not limit at this。Described microwave absorption assembly 1 is integral grid structure, is spaced apart 1～3cm between described grid。The grid of different interval is primarily adapted for use in the soil that hardens of varying particle size, contributes to soil displacement in the reactor。
Described soil catcher 2 is connected with described reactor 1, is used for the soil after collecting elimination petroleum pollution (gas mixture)。
Described multi-stage condensing device 4,6,8 is connected with described reactor 1, for condensing the gas mixture being removed respectively。Under differential responses actuator temperature, different petroleum components is removed out, and while elimination respective components, the condenser opening correspondence condenses。
Described oil product catcher 5,7,9 is connected with described multi-stage condensing device 4,6,8, is used for collecting condensed fraction, for instance, gasoline, diesel oil, residual oil etc.。
Now with the method for alum soil contaminated by crude oil specific embodiment。
Embodiment 1
By moisture content be 5%, oil content be that the oil-polluted soils of 5% (percentage by weight) is placed in the reactor of embedded carborundum assembly (mesh spacing 1cm), pass into N2Gas, with the heating rate of 1K/s, adopts microwave to be heated to 100 DEG C, retains 5min, and after the condensed device of gas mixture separates, the liquid obtained enters corresponding liquid header, weighs the weight of soil and liquid after gained processes, and result is in Table 1。
Embodiment 2
By moisture content be 10%, oil content be that the oil-polluted soils of 60% (percentage by weight) is placed in the reactor of embedded graphite components (mesh spacing 3cm), pass into Ar gas, heating rate with 5K/s, adopt microwave by its ramped heating schedule to 180 DEG C, retain 20min, it is continuously heating to 270 DEG C, retain 30min, it is warming up to 350 DEG C again, retaining 60min, after the condensed device of gas mixture separates, the liquid obtained enters corresponding liquid header, weighing the weight of soil and liquid after gained processes, result is in Table 1。
Embodiment 3
By moisture content be 30%, oil content be that the oil-polluted soils of 50% (percentage by weight) is placed in the reactor of embedded ferrum oxide assembly (mesh spacing 2cm), pass into He gas, heating rate with 3K/s, adopt microwave by its ramped heating schedule to 150 DEG C, retain 30min, it is continuously heating to 240 DEG C, retain 30min, it is warming up to 300 DEG C again, retaining 40min, after the condensed device of gas mixture separates, the liquid obtained enters corresponding liquid header, weighing the weight of soil and liquid after gained processes, result is in Table 1。
Embodiment 4
By moisture content be 20%, oil content be that the oil-polluted soils of 40% (percentage by weight) is placed in the reactor of embedded petroleum coke assembly (mesh spacing 2cm), pass into N2Gas, heating rate with 3K/s, adopt microwave by its ramped heating schedule to 170 DEG C, retain 10min, be continuously heating to 250 DEG C, retain 60min, after the condensed device of gas mixture separates, the liquid obtained enters corresponding liquid header, weighs the weight of soil and liquid after gained processes, and result is in Table 1。
Embodiment 5
By moisture content be 15%, oil content be that the oil-polluted soils of 50% (percentage by weight) is placed in the reactor of embedded charcoal assembly (mesh spacing 2cm), pass into He gas, heating rate with 5K/s, adopt microwave by its ramped heating schedule to 180 DEG C, retain 30min, it is continuously heating to 250 DEG C, retain 30min, it is continuously heating to 280 DEG C, retaining 60min, after the condensed device of gas mixture separates, the liquid obtained enters corresponding liquid header, weighing the weight of soil and liquid after gained processes, result is in Table 1。
Embodiment 6
By moisture content be 10%, oil content be that the oil-polluted soils of 30% (percentage by weight) is placed in the reactor of embedded carborundum assembly (mesh spacing 2cm), pass into Ar gas, heating rate with 3K/s, adopt microwave by its ramped heating schedule to 150 DEG C, retain 30min, it is continuously heating to 270 DEG C, retain 60min, after the condensed device of gas mixture separates, the liquid obtained enters corresponding liquid header, weighing the weight of soil and liquid after gained processes, result is in Table 1。
Oil-polluted soils removing oil rate when table one different operating
Through above-described embodiment it can be seen that oil-polluted soils is after microwave combustion method, removing oil rate is the highest can reach 97.3%, and gained oil product forms based on diesel oil distillate。
Finally, in addition it is also necessary to be only several specific embodiments of the present invention it is noted that listed above。It is clear that the invention is not restricted to above example, it is also possible to there are many deformation。All deformation that those of ordinary skill in the art can directly derive from present disclosure or associate, are all considered as protection scope of the present invention。
Claims (10)
1. an oil-polluted soils microwave quickly repairs the method with Oil Recovery, it is characterised in that described method at least includes:
1) oil-polluted soils to be repaired is placed in the reactor of embedded microwave absorption assembly；
2) pass into noble gas, reactor is warming up under specified temp and keeps a period of time, make gas mixture remove, it is thus achieved that the soil after reparation；
3) by described gas mixture through multi-stage condensing device, collect after separation and obtain different fractions。
2. oil-polluted soils microwave according to claim 1 quickly repairs the method with Oil Recovery, it is characterised in that: the material of described microwave absorption assembly is carborundum, petroleum coke, charcoal, graphite or ferrum oxide。
3. oil-polluted soils microwave according to claim 1 quickly repairs the method with Oil Recovery, it is characterised in that: described microwave absorption assembly is integral grid structure, is spaced apart 1～3cm between described grid。
4. oil-polluted soils microwave according to claim 1 quickly repairs the method with Oil Recovery, it is characterised in that: in described oil-polluted soils to be repaired, moisture content is 5～30%, and oil content is 5～60%。
5. oil-polluted soils microwave according to claim 1 quickly repairs the method with Oil Recovery, it is characterized in that: described step 2) described in the heating rate of reactor be 1～5K/s, holding temperature is for ranging for 100～350 DEG C, and temperature retention time ranges for 5～60min。
6. oil-polluted soils microwave according to claim 5 quickly repairs the method with Oil Recovery, it is characterised in that: described step 2) in heat up for once heat up or gradient increased temperature mode。
7. oil-polluted soils microwave according to claim 6 quickly repairs the method with Oil Recovery, it is characterized in that: described step 2) for gradient increased temperature mode, first it is warming up to 150～180 DEG C with the heating rate of 1～5K/s, after insulation 5～60min, it is warming up to 240～270 DEG C again with the heating rate of 1～5K/s, it is incubated 5～60min again, is finally warming up to 280～350 DEG C with the heating rate of 1～5K/s, be incubated 5～60min。
8. oil-polluted soils microwave according to claim 1 quickly repairs the method with Oil Recovery, it is characterized in that: remove components different in described gas mixture by different microwave heating temperature, corresponding condenser is opened simultaneously, collect the fraction after separating。
9. oil-polluted soils microwave according to claim 1 quickly repairs the method with Oil Recovery, it is characterised in that: described noble gas is N2, Ar or He。
10. one kind realizes the device of method as described in any one of claim 1～9, it is characterised in that described device at least includes:
Multi-stage condensing device that the soil catcher that the reactor of embedded microwave absorption assembly is connected with described reactor is connected with described reactor, the oil product catcher being connected with each condenser respectively。
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| CN201610044637.XA CN105689381B (en) | 2016-01-22 | 2016-01-22 | A kind of oil-polluted soils microwave is quickly repaired and the method and device of Oil Recovery |
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| CN107363087A (en) * | 2017-09-13 | 2017-11-21 | 西南科技大学 | A kind of processing method of Petroleum concentration soil |
| CN107983760A (en) * | 2017-12-15 | 2018-05-04 | 新冶高科技集团有限公司 | A kind of method that organic pollution solid waste reparation is realized using microwave treatment |
| CN108746178A (en) * | 2018-07-13 | 2018-11-06 | 新疆维吾尔自治区固体废物管理中心 | A kind of energy saving thermal desorption processing unit in situ and processing method of oil pollution soil |
| CN111360056A (en) * | 2020-02-25 | 2020-07-03 | 华北电力大学（保定） | Soil microwave remediation device and remediation method |
| CN112474764A (en) * | 2020-09-30 | 2021-03-12 | 光大环境修复(江苏)有限公司 | Method and system for treating petroleum hydrocarbon contaminated soil |
| CN113275372A (en) * | 2021-06-07 | 2021-08-20 | 江苏南京地质工程勘察院 | Modifier-enhanced thermal desorption remediation method for polycyclic aromatic hydrocarbon-polluted site |
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| CN107363087A (en) * | 2017-09-13 | 2017-11-21 | 西南科技大学 | A kind of processing method of Petroleum concentration soil |
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| CN111360056A (en) * | 2020-02-25 | 2020-07-03 | 华北电力大学（保定） | Soil microwave remediation device and remediation method |
| CN112474764A (en) * | 2020-09-30 | 2021-03-12 | 光大环境修复(江苏)有限公司 | Method and system for treating petroleum hydrocarbon contaminated soil |
| CN112474764B (en) * | 2020-09-30 | 2023-08-29 | 光大环境修复(江苏)有限公司 | Method and system for treating petroleum hydrocarbon contaminated soil |
| CN113275372A (en) * | 2021-06-07 | 2021-08-20 | 江苏南京地质工程勘察院 | Modifier-enhanced thermal desorption remediation method for polycyclic aromatic hydrocarbon-polluted site |
| CN113275372B (en) * | 2021-06-07 | 2023-08-01 | 江苏南京地质工程勘察院 | Modifier reinforced thermal desorption restoration method for polycyclic aromatic hydrocarbon polluted site |
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