KR20170030818A - Method of long distance transportation of liquid carbon dioxide for co2 underground storing - Google Patents
Method of long distance transportation of liquid carbon dioxide for co2 underground storing Download PDFInfo
- Publication number
- KR20170030818A KR20170030818A KR1020150128220A KR20150128220A KR20170030818A KR 20170030818 A KR20170030818 A KR 20170030818A KR 1020150128220 A KR1020150128220 A KR 1020150128220A KR 20150128220 A KR20150128220 A KR 20150128220A KR 20170030818 A KR20170030818 A KR 20170030818A
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- carbon dioxide
- liquid carbon
- water
- raw material
- transportation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/01—Purifying the fluid
- F17C2265/015—Purifying the fluid by separating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/05—Regasification
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Supplying a raw material of liquid carbon dioxide containing water as an impurity; Heating the raw material to vaporize the liquid carbon dioxide; Performing a dehydration process for removing water from the heated gaseous raw material; Cooling the water-removed raw material to form liquid carbon dioxide for transportation; And transporting the liquid carbon dioxide for transportation, wherein the liquid carbon dioxide is transported for a long distance.
Description
The present invention relates to a method for remote transport of liquid carbon dioxide for CO2 storage.
Since a large amount of carbon dioxide generated from various industrial chemical plants and power plants causes environmental problems, countries around the world have to charge the emission of carbon dioxide on the one hand, while on the other hand, have. One of them is the Carbon Dioxide Capture and Storage (CCS) technology.
Carbon dioxide capture and storage (CCS) is a technology that collects a large amount of carbon dioxide generated from various industrial chemical plants and power plants, and injects it into the underground and marine sedimentary rock layers.
One embodiment of the present invention provides a method of remote transport of liquid carbon dioxide.
In one embodiment of the present invention, there is provided a method for producing a liquid carbon dioxide comprising the steps of: supplying a raw material of liquid carbon dioxide containing water as an impurity; Heating the raw material to vaporize the liquid carbon dioxide; Performing a dehydration process for removing water from the heated gaseous raw material; Cooling the water-removed raw material to form liquid carbon dioxide for transportation; And transporting the liquid carbon dioxide for transportation. The present invention also provides a method for transporting liquid carbon dioxide in a long distance.
The temperature of the liquid carbon dioxide containing the water as an impurity may be -30 to -15 ° C.
The liquid carbon dioxide containing the water as an impurity can be heated to a temperature of 10 to 30 占 폚.
The dehydration process can be performed by a cooling method, a glycol method, or a method using an adsorption layer.
The method using the adsorbent layer may be a method in which the heated material is passed through a molecular sieve and the molecular sieve adsorbs water in the heated gaseous raw material.
The molecular sieve may be a microporous crystalline inorganic compound.
The water-removed raw material can be cooled to a temperature of -30 to -15 占 폚.
The raw material can maintain a pressure of 15 to 30 bar during the formation of the liquid carbon dioxide for transportation via heating, dehydration and cooling.
The raw material of the liquid carbon dioxide may include water in an amount of 0.05 mol% to 5 mol%.
The liquid carbon dioxide for transportation may contain water in an amount of 0.05 mol% or less.
The long-distance transport method of liquid carbon dioxide is an effective method of transporting carbon dioxide for CO2 storage in a stable and efficient way to transport carbon dioxide.
1 is a flow chart illustrating each step of a method of transporting liquid carbon dioxide over a long distance according to an embodiment of the present invention.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.
In one embodiment of the invention,
Supplying a raw material of liquid carbon dioxide containing water as an impurity;
Heating the raw material to vaporize the liquid carbon dioxide;
Performing a dehydration process for removing water from the heated gaseous raw material;
Cooling the water-removed raw material to form liquid carbon dioxide for transportation; And
Transporting the liquid carbon dioxide for transportation;
And a method of transporting liquid carbon dioxide over a long distance.
In the case of carbon dioxide capture and storage (CCS), the location of various industrial chemical plants and power plants where carbon dioxide is generally captured and the storage location of carbon dioxide are separated, necessitating transportation of captured carbon dioxide.
The method of remote transport of liquid carbon dioxide is a method for transporting from a source to a storage location, in particular for the underground storage of carbon dioxide.
Generally, in various industrial chemical plants and power plants, carbon dioxide is concentrated and discharged into a liquid phase so that it can be used for industrially useful purposes such as dry ice. Thus, in order to store the liquid carbon dioxide captured at the carbon dioxide generating source at a proper storage point such as the underground or the ocean sedimentary rock layer, a method of transferring a large amount of liquid carbon dioxide is required.
The long-distance transport method of liquid carbon dioxide can be applied, for example, as a method for transporting liquid carbon dioxide in a large amount in a stable and efficient manner, in order to be required in such carbon dioxide capture and storage (CCS) technology.
As described above, the raw materials for the liquid carbon dioxide use carbon dioxide which is concentrated and discharged into a liquid phase so that it can be used for industrial industrial applications in various industrial chemical plants and power plants. Typically the liquid carbon dioxide is discharged at a temperature condition of about -30 ° C to about -15 ° C and a pressure condition of about 15 bar to about 30 bar.
In addition, carbon dioxide, which is concentrated and discharged into a liquid phase so as to be useful for industrial applications in various industrial chemical plants and power plants, is highly concentrated and contains almost no impurities, but contains trace amounts of water. Specifically, the raw material of the liquid carbon dioxide may contain water in an amount of about 0.05 mol% to 5 mol%.
Water contained together with impurities during the mass transport of the liquid carbon dioxide can be combined with carbon dioxide to form a solid gas hydrate (also referred to as 'hydrate'). When such a solid gas hydrate is formed, for example, There is a possibility that the diameter of the tube is narrowed when the carbon dioxide is transferred through the tube.
In order to prevent the generation of such a solid gas hydrate as much as possible, a small amount of water contained as impurities must be removed. Accordingly, the method of transporting the liquid carbon dioxide at a long distance includes performing a dewatering process for removing water from the liquid carbon dioxide raw material.
In the above-mentioned method of transporting liquid carbon dioxide in a long distance, in order to carry out the dehydration process, the liquid phase carbon dioxide is first vaporized, and then a dehydration process is performed in a gaseous state.
First, after the raw material of the liquid carbon dioxide containing the water as an impurity is supplied, it is heated to vaporize the liquid carbon dioxide. The temperature elevating temperature for vaporizing the liquid carbon dioxide can be appropriately determined according to the phase change degree of the carbon dioxide. After the dewatering process, the carbon dioxide must be formed into a liquid phase suitable for transportation again, so that it is desirable to minimize unnecessary phase changes. For example, while keeping the pressure condition, the temperature is raised only to change the liquid carbon dioxide to the gas phase. Specifically, the temperature can be raised to about 10 to about 30 DEG C while maintaining the pressure at about 15 to about 30 bar.
As described above, the raw material containing liquid carbon dioxide is heated so as to be suitable for carrying out the dewatering process, and then the dewatering process is performed to remove water from the heated gaseous raw material.
The dehydration process can be performed by applying a known method of removing water. Specifically, the dehydration process can be performed by, for example, a cooling method, a glycol method, or a method using an adsorption layer.
The cooling method is a low-temperature cooling system using a coolant for cooling the gaseous carbon dioxide as a liquid for storage in a transportation container.
The glycol method is a method in which a glycol compound such as tetraethylene is used to react with impurities contained in carbon dioxide to remove the glycol compound.
The method using the adsorption layer may be a method using a molecular sieve. The molecular chain can be a microporous crystalline inorganic compound including fine and uniform pores, and can capture water molecules into fine pores.
The microporous crystalline inorganic compound may specifically include at least one selected from the group consisting of molecular sieves such as zeolite.
The method using the adsorption layer is preferable to other methods in terms of stability and efficiency.
The raw material from which the water has been removed by the dewatering process is cooled again to a temperature of about -30 to about -10 DEG C to form liquid carbon dioxide for transportation convenient for transportation.
The feedstock may maintain a pressure of about 15 to about 30 bar during the formation of the liquid carbon dioxide for transport via the above-mentioned elevated temperature, dehydration and cooling.
The liquid carbon dioxide for transportation has a lower content as water is removed than the raw material. Specifically, the raw material of liquid carbon dioxide may contain water in an amount of about 0.05 mol% or less.
The liquid phase carbon dioxide can be convenient in the transport phase since it is much smaller in volume than, for example, gaseous carbon dioxide. However, as described above, the formation of gas hydrate in the liquid carbon dioxide transportation is a problem. Carbon dioxide sources and storage points are generally remote. However, the generation of gas hydrates may become more problematic when traveling at a distance. Therefore, the stability of the liquid carbon dioxide can be a problem due to the transportation of the liquid carbon dioxide. The method of transporting the liquid carbon dioxide by a long distance is a dehydration process to significantly reduce the amount of impurities, thereby ensuring stability, Because it can be transported, it is very useful as a remote transportation method.
Also, when transporting a large amount of carbon dioxide, the absolute content of water is increased so that the problem of gas hydrate becomes more serious. The method of transporting liquid carbon dioxide in a long distance is a method of transporting a large amount of carbon dioxide because it can secure the stability by carrying out the dewatering process to drastically lower the content of water as an impurity and accordingly carry the highly concentrated carbon dioxide useful.
Specifically, the liquid carbon dioxide for transportation obtained after the dewatering process is carried out by the remote transportation method of the liquid carbon dioxide can be transported at a capacity of about 5,000 to about 12,000 ton / year.
The liquid carbon dioxide for transport may be transported using known transport means for transporting liquid carbon dioxide. Specifically, the liquid carbon dioxide for transportation can be transported through a pipeline, or stored in a container, and then transported by transporting the container.
1 is a flow chart illustrating each step of a method of transporting liquid carbon dioxide over a long distance according to an embodiment of the present invention. Referring to FIG. 1, as described above, carbon dioxide is transported from a source to a destination storage point through a step of increasing temperature (S1), dehydrating (S2), cooling (S3) and transporting (S4) .
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, And falls within the scope of the invention.
Claims (10)
Heating the raw material to vaporize the liquid carbon dioxide;
Performing a dehydration process for removing water from the heated gaseous raw material;
Cooling the water-removed raw material to form liquid carbon dioxide for transportation; And
Transporting the liquid carbon dioxide for transportation;
The method comprising the steps of:
The temperature of the liquid carbon dioxide containing the water as an impurity is preferably from -30 to -15 DEG C
A method of remote transport of liquid carbon dioxide.
The liquid carbon dioxide containing the water as an impurity is heated to a temperature of 10 to 30 DEG C
A method of remote transport of liquid carbon dioxide.
The dehydration process may be performed by a cooling method, a glycol method, or a method using an adsorption layer
A method of remote transport of liquid carbon dioxide.
The method of using the adsorbent layer is a method of passing water through the molecular sieve and allowing the molecular sieve to adsorb water in the heated gaseous raw material to remove water
A method of remote transport of liquid carbon dioxide.
The molecular sieve is a microporous crystalline inorganic compound
A method of remote transport of liquid carbon dioxide.
The water-free feedstock is cooled to a temperature of -30 to -15 < 0 > C
A method of remote transport of liquid carbon dioxide.
The feedstock is subjected to elevated temperature, dehydration and cooling to maintain a pressure of 15 to 30 bar during the formation of the liquid carbon dioxide for transport
A method of remote transport of liquid carbon dioxide.
The raw material of liquid carbon dioxide includes water in an amount of 0.05 mol% to 5 mol%
A method of remote transport of liquid carbon dioxide.
The liquid carbon dioxide for transportation contains water in an amount of 0.05 mol% or less
A method of remote transport of liquid carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150128220A KR20170030818A (en) | 2015-09-10 | 2015-09-10 | Method of long distance transportation of liquid carbon dioxide for co2 underground storing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150128220A KR20170030818A (en) | 2015-09-10 | 2015-09-10 | Method of long distance transportation of liquid carbon dioxide for co2 underground storing |
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| Publication Number | Publication Date |
|---|---|
| KR20170030818A true KR20170030818A (en) | 2017-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020150128220A KR20170030818A (en) | 2015-09-10 | 2015-09-10 | Method of long distance transportation of liquid carbon dioxide for co2 underground storing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102612974B1 (en) | 2022-12-16 | 2023-12-12 | (주)에이원 | Liquefaction, Storage and Delivery System of Carbon Dioxide at Hub Terminal for CCS |
-
2015
- 2015-09-10 KR KR1020150128220A patent/KR20170030818A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102612974B1 (en) | 2022-12-16 | 2023-12-12 | (주)에이원 | Liquefaction, Storage and Delivery System of Carbon Dioxide at Hub Terminal for CCS |
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