KR20160069383A - Gasification system for remedying soil contaminated by highly concentrated crude oil - Google Patents
Gasification system for remedying soil contaminated by highly concentrated crude oil Download PDFInfo
- Publication number
- KR20160069383A KR20160069383A KR1020140175283A KR20140175283A KR20160069383A KR 20160069383 A KR20160069383 A KR 20160069383A KR 1020140175283 A KR1020140175283 A KR 1020140175283A KR 20140175283 A KR20140175283 A KR 20140175283A KR 20160069383 A KR20160069383 A KR 20160069383A
- Authority
- KR
- South Korea
- Prior art keywords
- soil
- gasification
- crude oil
- contaminated
- syngas
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
The present invention relates to a gasification system for purifying contaminated soil, and more particularly, to a gasification system for gasifying a soil contaminated with crude oil at a high concentration to facilitate the recovery of the purified soil.
Due to the massive scale of oil industry, oil spill accidents are continuously occurring in a variety of places ranging from industrial complexes such as oil well development sites, refineries, transport facilities, moving vehicles, storage facilities, gas stations,
Soil contaminated with oil, particularly soil contaminated with crude oil such as heavy oil, has a problem that the contamination persists semi-permanently unless it is purified through a separate process even over time.
Soil contamination caused by the leakage of crude oil over heavy oil is relatively longer than that of light oil such as persistent pollution, and the fluidity of the pollutant is low and the range of contamination diffusion is relatively small. Because of this, pollutants are concentrated at a high concentration around the pollution source. Therefore, it is not easy to reduce contaminants by artificial soil remediation or restoration treatment, as opposed to contamination by oil of relatively low hydrocarbon system such as light oil, and according to some experts opinion, It is reported that there is no method.
For example, soil contaminants generated by crude oil spillage at refineries in domestic refineries have had to deal with waste at high cost due to lack of proper treatment methods. In particular, the large-scale contaminated soils in the oil-producing Middle East region are exposed and weathered under a desert climate for a long time, and are characterized by solid appearance like coal. Also, they contain very high viscosity crude oil, Belt can be seen as oil. It is known that the viscosity of crude oil contained in contaminated soil is above 10,000 cPs with little fluidity, remains within 30 cm of the topsoil due to low permeability by soil depth, and contains at least several tens% of oil in soil.
In the Middle Eastern countries, there is concern about ecological effects due to oil pollution accumulated so far. However, it is very difficult to properly treat the soil with the physico-chemical treatment method or the biological treatment method, which is a purification technology of conventional oil contaminated soil It is true.
Until now, soil washing or thermal desorption has been known to be one of the most promising techniques for recovering soil contaminated with crude oil.
Soil washing method is a method of injecting a detergent such as steam or surfactant into the soil and inducing it to come into contact with the contaminant, thereby causing the contaminant to be desorbed from the soil particles. It is a technique of extracting / separating contaminants from the soil using a separate facility And is widely commercialized. However, this method is not recommended as an effective restoration method because the efficiency of cleaning is low due to the formation of tar balls when the contaminants are high in concentration and the chemical desorption efficiency from the soil particles is low.
On the other hand, the thermal desorption technique is a technique of applying heat to the contaminated soil to induce improvement of the viscosity of the contaminant to desorb the crude oil from the soil particles, or to induce combustion reaction and discharge it to the vapor phase. However, thermal desorption technology is not economical because it requires separate fuel to raise the temperature to a high temperature where direct and indirect thermal desorption is possible, and most of the harmful dioxins, VOCs, SOx, NOx and CO 2 And the like are generated, leading to the movement of the contaminated phase.
Therefore, there is a need to develop a method, apparatus, or system for purifying soil contaminated with high viscosity and high concentration of crude oil.
The present invention aims to provide a gasification system capable of purifying and restoring soil contaminated with high viscosity and high concentration of crude oil.
In order to solve the above-described problems, the present invention provides a pretreatment unit for crude oil contaminated soil; A gasification unit in which the crude oil contaminated soil pretreated by the pretreatment unit flows and is gasified; A gasification reaction chamber for gasifying the crude oil contained in the contaminated soil; and a gasification reaction chamber for gasifying the crude oil contained in the contaminated soil; And a gasifier located at a lower portion of the gasification reaction chamber and containing a soil storage tank for transporting and storing the soil after the gasification reaction. The present invention also provides a gasification system for purifying crude oil contaminated soil.
According to an embodiment of the present invention, it is preferable that a rock hopper is provided under the soil storage tank so that the soil can be discharged to the outside when a certain amount of soil is collected.
According to another embodiment of the present invention, it is preferable that a water inlet for supplying water is formed in the?
According to another embodiment of the present invention, it is preferable that an air inlet and a steam inlet for injecting air necessary for the gasification reaction are formed at the upper end of the gasifier.
According to another embodiment of the present invention, it is preferable that a discharge port for discharging the generated syngas to the treatment section is formed at the upper end of the soil storage tank.
The present invention also relates to a pretreatment unit for crude oil contaminated soil; A gasification unit in which the crude oil contaminated soil pretreated by the pretreatment unit flows and is gasified; And a purification soil treatment unit for post-treating the purified soil from which the crude oil produced in the gasification unit is removed, wherein the gasification unit comprises: a gasification reaction chamber for gasifying the crude oil contained in the contaminated soil; And a gasifier located at a lower portion of the gasification reaction chamber and composed of a syngas which is fed by syngas and soil and is cooled by cooling water. The purified soil treatment unit removes water contained in the purified soil from the crude oil, A solid-liquid separating device The present invention provides a gasification system for purifying crude oil contaminated soil including a water outlet and a soil outlet installed in the solid-liquid separator.
According to an embodiment of the present invention, it is preferable that a water inlet for supplying water to the synthesis gas and the soil is formed at the upper end of the shoveling chamber.
According to another embodiment of the present invention, the pretreatment unit may include a stirrer for slurrying the soil contaminated with crude oil; A solvent storage tank for storing the solvent injected through the injection port on the upper side or the side of the agitator; And a separator for crushing and sorting the slurry so as to have a predetermined particle size after the slurry is transferred in the agitator.
According to the gasification system of the present invention, the soil contaminated with crude oil of high viscosity and high concentration can be easily purified and recovered even without a separate gasification fuel, and it is also possible to produce industrially useful syngas.
Further, according to the gasification system according to the first embodiment of the present invention, it is possible to separate the syngas gasification part from the gasification part, and to perform additional restoration processing on the purified soil, thereby making it possible to provide an economical gasification system.
According to the gasification system of the second embodiment of the present invention, the existing gasification reactor can be used as it is.
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a simplified illustration of a gasification system for the purification of contaminated soils according to a first embodiment of the present invention;
2 is a simplified illustration of a gasification system for purifying crude contaminated soil according to a second embodiment of the present invention.
3 is a diagram illustrating a preprocessing unit according to an embodiment of the present invention.
4 is a view showing the purified soil treatment unit according to the second embodiment of the present invention in more detail.
The present inventors have been intensively studying a method for purifying high-viscosity and high-concentration crude oil contaminated soil such as 'Tartite' in the Middle East, which has been recognized as a waste for a long time. However, when the gasification process is used, The present invention has been completed based on the fact that high-concentration crude oil can be easily removed.
The gasification process converts energy sources such as coal, petroleum residues and woody cellulose into industrially useful syngas (mainly hydrogen and carbon monoxide) to generate electricity, as raw materials in various petrochemical fields such as ammonia and methane. The present invention makes this technique available for the purification of soil contaminated with high viscosity, high concentration crude oil.
Hereinafter, the present invention will be described in detail with reference to the drawings and embodiments. In describing the present invention, a detailed description of related processes or configurations will be omitted so as not to obscure the gist of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a simplified illustration of a gasification system for the purification of contaminated soils according to a first embodiment of the present invention; According to this, the gasification system for purifying crude oil contaminated soil comprises a pretreatment section P1 of crude oil contaminated soil; A gasification unit P2 in which the crude oil contaminated soil pretreated in the pretreatment unit P1 flows and is gasified; And a gasification unit P3 including a
According to one embodiment of the present invention, the oil contaminated soil is weathered in a long time contaminated state, the relatively light oil is volatilized, and most of the heavy oils remain, and the hardening proceeds considerably, and the total petroleum hydrocarbons TPH) concentration (ASTM D7066) of 400,000 ~ 600,000 mg / kg. The crude oil contained in these contaminated soils has a viscosity of 10,000 cPs or less which has almost no fluidity, and has a low permeability by soil depth and remains within 30 cm of the topsoil. The content of oil in the soil is at least several tens%, for example, By weight or more of the crude oil. Therefore, the gasification reaction can be performed without using any separate raw materials such as petroleum or coal for the gasification reaction. As a result, the crude oil can be removed and the purified soil can be obtained.
As described above, the crude oil contaminated soil according to an embodiment of the present invention is in a state where there is little fluidity of high viscosity, and therefore it is necessary to perform pretreatment so that the gasification reaction can be performed within a short time. The pretreatment can be performed in such a manner that the contaminated soil of crude oil can be homogenized to have consistent physical properties as a raw material for gasification by methods such as grinding, grinding, heating and solvent extraction. In the present invention, the contaminated soil of crude oil is slurried using a solvent extraction method. 1, the
The contaminated soil contaminated with crude oil through the pretreatment is transferred to the gasification unit (P2). The gasification part (P2) purifies the contaminated soil through the gasification reaction in the gasifier (20) and produces a syngas. The
The purified soil and the syngas produced by the gasification reaction in the
The soil in which the syngas is separated and purified is temporarily stored in the
The syngas transferred to the pumping unit P3 is cooled in the
The steam generated by heat exchange with the synthesis gas in the heat exchanger may be supplied to the
The post-treatment process of the synthesis gas in the post-treatment section may be carried out according to a process ordinarily practiced in this field, unless otherwise specified.
2 is a simplified illustration of a gasification system for purifying crude contaminated soil according to a second embodiment of the present invention. According to the second embodiment of the present invention, there is an advantage that an existing gasifier can be used.
According to a second embodiment of the present invention, a gasification system for purifying crude oil contaminated soil comprises: a pretreatment section P21 of crude oil contaminated soil; A gasification unit P22 through which the crude contaminated soil pretreated in the pre-treatment unit P21 flows and is gasified; And a purified soil treatment unit (P23) for post-treating the purified soil from which the crude oil produced in the gasification unit (P22) has been removed, wherein the gasification unit (P22) comprises a gasification reaction for gasifying the crude oil contained in the crude oil contaminated
Since the contaminated soil of crude oil is as described in the first embodiment of the present invention, detailed description is omitted.
2, the pretreatment unit P21 slurries the
3 is a diagram illustrating a preprocessing unit according to an embodiment of the present invention. Referring to FIG. 3, the pretreatment units P1 and P21 include a
The crude contaminated soil homogenized through the pretreatment is transferred to the gasification unit P22. The gasification unit P22 purifies the contaminated soil through a gasification reaction in the
The purified soil and the syngas produced by the gasification reaction in the
The syngas transferred to the kneading
The purified soil cleaned by the cooling water in the polishing
4 is a view showing the purified soil treatment unit according to the second embodiment of the present invention in more detail. 4, the purification soil treatment unit P23 includes a
The gasification system according to the first and second embodiments described above is a gasification system for purifying soil polluted with high viscosity and high concentration of crude oil unlike the conventional coal gasification or residual gasification. Therefore, unlike existing gasification processes, crude oil concentrated in the soil to be purified can be used as a raw material, so no separate gasification raw material is required. On the other hand, the gasification system according to the first embodiment of the present invention, compared to the gasification system according to the second embodiment, which can utilize a conventional gasifier, It is a further improved gasification system in that it does not require additional post treatment and also can prevent the facility problems such as the clogging of the soil outlet which can be caused by coagulation with water contained in the Qingdao soil. Further, in the gasification system according to the second embodiment, the water of the artificial part is lost not only when the temperature of the synthesis gas is reduced but also when the lock hopper is opened, a large amount of water is consumed together with the soil, Is a gasification system improved to a more stable structure because it can reduce the consumption of water and maintain the continuity of the gasification reaction by only compensating the lost capacity for the temperature reduction.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be clear to those who have knowledge of.
20, 200: gasifier
21, 201: Gasification room
22: Soil storage tank
23, 203: air inlet
25, 205: Steam inlet
24, 204: lock hopper
27, 32, 207: Synthetic gas outlet
30, 202:? Writing room
31, 206: water inlet
Claims (8)
A gasification unit in which the crude oil contaminated soil pretreated by the pretreatment unit flows and is gasified;
And a combustion chamber including a combustion chamber into which the synthesis gas produced in the gasification section flows,
Wherein the gasification unit comprises: a gasification reaction chamber for gasifying the crude oil contained in the contaminated soil; And
And a soil storage tank located below the gasification reaction chamber and in which the soil after the gasification reaction is transferred and stored. The gasification system for purifying crude oil contaminated soil includes a gasifier.
And a rock hopper for discharging the soil to the outside when a certain amount of soil is collected in the lower part of the soil storage tank.
The gasification system for purifying crude oil contaminated soil according to claim 1, wherein a water inlet for supplying water to the synthetic gas is formed in the gasification chamber.
Wherein the gasifier has an air inlet and a steam inlet for injecting air necessary for the gasification reaction.
And a discharge port for discharging the produced syngas to the boiler is formed at an upper end of the soil storage tank.
A gasification unit in which the crude oil contaminated soil pretreated by the pretreatment unit flows and is gasified; And
And a purification soil treatment unit for post-treating the purified soil from which the crude oil produced in the gasification unit has been removed,
Wherein the gasification unit comprises: a gasification reaction chamber for gasifying the crude oil contained in the contaminated soil; And
And a gasifier located at a lower portion of the gasification reaction chamber and composed of a syngas and a syngas, wherein the syngas and the soil are transferred and cooled by the cooling water,
The purified soil treatment unit includes a solid-liquid separator for removing water contained in the purified soil from which the crude oil has been removed;
A gas discharge system for purifying crude oil contaminated soil including a water discharge port and a soil discharge port attached to the solid-liquid separation device.
And a water inlet for supplying water to the syngas and the soil is formed in the upper part of the crushing chamber.
Wherein the pretreatment unit comprises: a stirrer for supplying soil contaminated with crude oil to slurry;
A solvent storage tank for storing the solvent injected through the injection port on the upper side or the side of the agitator;
And a sorter crushing and sorting the slurry so as to have a predetermined particle size after the slurry soil is transferred in the agitator.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140175283A KR20160069383A (en) | 2014-12-08 | 2014-12-08 | Gasification system for remedying soil contaminated by highly concentrated crude oil |
PCT/KR2015/003325 WO2016093436A1 (en) | 2014-12-08 | 2015-04-02 | Method and system for purifying, using gasification, soil polluted by high-concentration crude oil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140175283A KR20160069383A (en) | 2014-12-08 | 2014-12-08 | Gasification system for remedying soil contaminated by highly concentrated crude oil |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20160069383A true KR20160069383A (en) | 2016-06-16 |
Family
ID=56107597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020140175283A KR20160069383A (en) | 2014-12-08 | 2014-12-08 | Gasification system for remedying soil contaminated by highly concentrated crude oil |
Country Status (2)
Country | Link |
---|---|
KR (1) | KR20160069383A (en) |
WO (1) | WO2016093436A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102453250B1 (en) * | 2022-04-22 | 2022-10-12 | 주식회사 에코프라임 | Contaminated soil cleaning system |
KR102453257B1 (en) * | 2022-04-22 | 2022-10-12 | 주식회사 에코프라임 | Contaiminated soil cleaning apparatus |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AP2008004678A0 (en) * | 2006-05-05 | 2008-12-31 | Plascoenergy Ip Holdings | A control system for the conversion of a carbonaceous feedstock into gas |
KR100916612B1 (en) * | 2007-09-06 | 2009-09-14 | 한국건설기술연구원 | Decontaminater and Decontamination method for contaminated soil using heating process and cleaning process |
KR100847058B1 (en) * | 2007-12-10 | 2008-07-18 | 하상안 | Purifying system for contaminated ground |
DE102007062414B4 (en) * | 2007-12-20 | 2009-12-24 | Ecoloop Gmbh | Autothermic process for the continuous gasification of carbon-rich substances |
KR100988047B1 (en) * | 2009-03-12 | 2010-10-18 | (주) 삼우이엔지 | Pollutants in the soil washing method and system |
-
2014
- 2014-12-08 KR KR1020140175283A patent/KR20160069383A/en active Search and Examination
-
2015
- 2015-04-02 WO PCT/KR2015/003325 patent/WO2016093436A1/en active Application Filing
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102453250B1 (en) * | 2022-04-22 | 2022-10-12 | 주식회사 에코프라임 | Contaminated soil cleaning system |
KR102453257B1 (en) * | 2022-04-22 | 2022-10-12 | 주식회사 에코프라임 | Contaiminated soil cleaning apparatus |
Also Published As
Publication number | Publication date |
---|---|
WO2016093436A1 (en) | 2016-06-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4495056A (en) | Oil shale retorting and retort water purification process | |
US8480789B2 (en) | Landfill gas purification method and system | |
CN110848697B (en) | Waste plastic cleaning treatment process based on pyrolysis and gasification mechanism and application thereof | |
US8863518B2 (en) | Process for the gasification of waste tires with residual oil | |
US20090074656A1 (en) | Process for production of hydrogen from coal and other fossil fuels | |
CN110049944B (en) | Method for producing pure hydrogen from synthesis gas originating from waste gasification and related plant | |
KR100256401B1 (en) | Device & method for recycling scrapped material with hydrogen oxygen plasma torch | |
CN106630529B (en) | Organic sludge thermal cracking gasification power generation system | |
MX2014010111A (en) | Method and system for separating and destroying sour and acid gas. | |
Muzenda | A comparative review of waste tyre pyrolysis, gasification and liquefaction (PGL) processes | |
KR20160069383A (en) | Gasification system for remedying soil contaminated by highly concentrated crude oil | |
KR20140144403A (en) | Continuous Refinement System For Synthetic Gas | |
US20040107835A1 (en) | Method and apparatus for treating synthesis gas and recovering a clean liquid condensate | |
US20140224636A1 (en) | Gasification system and method for high ash content feedstock | |
JP2012107110A (en) | Method for treating gas-treatment drainage, gasification apparatus of carbonaceous material, and method for treating carbonaceous material | |
JP2005068435A (en) | Method and plant for producing decontaminated syngas at high efficiency from feedstock rich in organic substance | |
CN101161334A (en) | A method for recovering waste gas during regenerative process of filtering adsorption material | |
KR101547235B1 (en) | Gasification remediation technology for soil contaminated by highly concentrated heavy/crude oil | |
CN206553374U (en) | Organic sludge thermal cracking gasification electricity generation system | |
CN112657327A (en) | Device for desulfurizing by ammonia water | |
CN114289428B (en) | Chemical steaming and washing and sewage treatment process for environment-friendly oil tank truck | |
CN215086104U (en) | Device for desulfurizing by ammonia water | |
CN219050783U (en) | Synthetic gas purification treatment system for organic solid waste pyrolysis | |
CA2797341A1 (en) | Process for producing pig iron or liquid primary steel products | |
Fosso-Kankeu | Coal tar production processes and potential of PAHs release into the environment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination |