KR102300729B1 - Carbon dioxide separation and reduction system - Google Patents

Abstract

The present invention relates to a system for separating and reducing carbon dioxide in exhaust gas by more efficiently liquefying the carbon dioxide, which includes: a compressor for compressing exhaust gas at high pressure; a vortex tube that separates a high-temperature gas and a low-temperature gas from a high-pressure exhaust gas at both ends; and a chamber connected to one end of the vortex tube to separate liquefied carbon dioxide from the introduced low-temperature gas, wherein the chamber includes: a housing; a connection pipe for connecting one end of the vortex tube and the housing; an exhaust pipe disposed on the upper portion of the housing to the exhaust gas; and a drain pipe disposed below the housing to discharge the liquefied carbon dioxide.

Description

Carbon dioxide separation reduction system {CARBON DIOXIDE SEPARATION AND REDUCTION SYSTEM}

The present invention relates to a carbon dioxide separation reduction system, and more particularly, to a system for separating and reducing carbon dioxide generated in the process of burning fuel or heat-treating it.

Power plants or engines (hereinafter referred to as 'plants') that generate power from fossil fuels as raw materials can produce power needed for real life more economically, and are therefore widely used in society at present. However, as the above plant has the disadvantage of causing environmental pollution as well as the advantage of economically obtaining energy, it has emerged as a social problem to purify or suppress the emission of harmful gas emitted from the plant.

In some areas, development is underway in the direction of excluding fossil fuels and producing energy using eco-friendly resources. For example, there is a method of suppressing environmental pollution through renewable energy, which is a generic term for new energy such as fuel cell and hydrogen energy, and renewable energy such as solar light, solar heat, wind power, and hydraulic power. However, with the technology developed so far, it is difficult to convert all energy consumed into new and renewable energy sources, and the initial cost is excessively generated and the energy production efficiency is also low, making it difficult to utilize in many industries.

Accordingly, Korean Patent No. 10-1847951 (hereinafter referred to as 'prior literature') discloses a technique for liquefying and recovering carbon dioxide from a raw material gas. Briefly describing the above prior literature, the carbon dioxide liquefaction recovery apparatus of the above prior document may include a compressor, an air-cooled precooler, a liquefaction column, and a vortex tube. At this time, the raw material gas is compressed to a high pressure through a compressor and cooled through an air-cooled precooler, and carbon dioxide may be liquefied and separated on the liquefaction tower. Here, the vortex tube is configured to separate the non-liquefied fuel gas discharged from the liquefaction tower into high-temperature gas and low-temperature gas, and provide cooling heat to the liquefaction tower through the low-temperature gas.

Such carbon dioxide liquefaction technology has an advantage in that it is possible to reduce greenhouse gases among harmful gases. However, the currently disclosed technologies have a problem in that the economic efficiency is rather low because energy consumption is excessively generated by using the pre-cooling method and the waste heat circulation method. In addition, since there is a limit to liquefying carbon dioxide while reducing energy consumption in a single chamber, it may lead to a problem in that purification performance is lowered in order to increase economic efficiency.

KR 10-1847951 B1 (2018.04.11.) KR 10-2020-0106284 A (2020.09.14.) KR 10-2024753 B1 (2019.09.25.)

The present invention has been devised to solve the problems of the prior art, and an object of the present invention is to separate the airflow using a vortex tube to remove the carbon dioxide contained in the exhaust gas, but separate the liquefied carbon dioxide through the chamber, An object of the present invention is to provide a carbon dioxide separation reduction system in which carbon dioxide reduction performance is further improved by reducing carbon dioxide in steps of both the high temperature gas and the low temperature gas side of the vortex tube.

In order to achieve the above object, the present invention provides a carbon dioxide separation reduction system for removing carbon dioxide from an exhaust gas of a plant, comprising: a compressor for compressing the exhaust gas to a high pressure; a vortex tube that separates the high-temperature gas and the low-temperature gas from the high-pressure exhaust gas at both ends; and a chamber connected to one end of the vortex tube to separate carbon dioxide from the incoming low-temperature gas, wherein the chamber includes a housing, a connection pipe connecting one end of the vortex tube and the housing, and disposed on the upper portion of the housing It may include a discharge pipe through which gas is exhausted, and a drainage pipe disposed under the housing to discharge liquefied carbon dioxide.

In addition, the carbon dioxide separation reduction system according to the present invention, a surge tank disposed between the plant and the compressor to stabilize the pressure of the exhaust gas; and a moisture eliminator disposed between the plant and the surge tank to remove moisture in the exhaust gas, wherein the moisture eliminator includes a heat exchanger for lowering the temperature of exhaust gas using a refrigerant, and discharge from the heat exchanger It may include a collection device for separating the condensate from the exhaust gas.

In addition, in the carbon dioxide separation reduction system according to the present invention, the gas discharged from the chamber may be supplied as a refrigerant of the heat exchanger.

In addition, the carbon dioxide separation reduction system according to the present invention, a surge tank disposed between the plant and the compressor to stabilize the pressure of the exhaust gas; and a front end heat exchanger disposed at the front end of the surge tank, wherein the gas discharged from the chamber may be supplied as a refrigerant of the front end heat exchanger.

In addition, the carbon dioxide separation reduction system according to the present invention, a bypass line connecting the surge tank or the collection device and the housing of the chamber; may further include.

In addition, the chamber may further include a cooling device for cooling the liquid carbon dioxide to prevent the liquid carbon dioxide from being vaporized.

In addition, the carbon dioxide separation reduction system according to the present invention, a first compressor for compressing the high-temperature gas separated from the vortex tube to a high pressure; a first vortex tube connected to the first compressor to separate the airflow of the hot gas; a second compressor for compressing the low-temperature gas discharged through the chamber to a high pressure; a second vortex tube connected to the second compressor to separate the airflow of the low-temperature gas; a first chamber receiving a low-temperature airflow of high-temperature gas from the first vortex tube and receiving a high-temperature airflow of low-temperature gas from the second vortex tube; and a second chamber receiving a high-temperature airflow of high-temperature gas from the first vortex tube and receiving a low-temperature airflow of low-temperature gas from the second vortex tube. The gas is cooled and liquefied carbon dioxide can be discharged.

In addition, the carbon dioxide separation reduction system according to the present invention, a sub-compressor for compressing the first gas exhausted from the first chamber or the second gas exhausted from the second chamber to a high pressure; a sub-vortex tube for separating the high-pressure first gas or the second gas stream; and a sub-chamber for separating liquefied carbon dioxide from the low-temperature airflow of the first gas or the second gas.

In addition, the carbon dioxide separation reduction system according to the present invention, a third compressor for receiving the 1-1 gas, which is a high-temperature air stream of the first gas, and compressing it to a high pressure; a third vortex tube for separating the high-pressure air flow of the 1-1 gas; a fourth compressor for receiving the first-2 gas, which is a low-temperature air stream of the first gas discharged from the sub-chamber, and compressing it to a high pressure; a fourth vortex tube for separating the airflow of the first and second gases at high pressure; a third chamber receiving the low-temperature airflow of the 1-1 gas from the third vortex tube and receiving the high-temperature airflow of the 1-2 gas from the fourth vortex tube; and a fourth chamber receiving the high-temperature airflow of the 1-1 gas from the third vortex tube and receiving the low-temperature airflow of the 1-2 gas from the fourth vortex tube. In each of the four chambers, the mixed gas may be cooled to discharge liquefied carbon dioxide.

Alternatively, the carbon dioxide separation reduction system according to the present invention includes a third compressor that receives the 2-1 gas, which is a high-temperature air stream of the second gas, and compresses it to a high pressure; a third vortex tube for separating the airflow of the 2-1 gas at high pressure; a fourth compressor for receiving the 2-2 gas, which is a low-temperature air flow of the second gas discharged from the sub-chamber, and compressing it to a high pressure; a fourth vortex tube that separates the airflow of the 2-2 gas at high pressure; a third chamber receiving the low-temperature airflow of the 2-1 gas from the third vortex tube and receiving the high-temperature airflow of the 2-2 gas from the fourth vortex tube; and a fourth chamber receiving the high-temperature airflow of the 2-1 gas from the third vortex tube and receiving the low-temperature airflow of the 2-2 gas from the fourth vortex tube. In each of the four chambers, the mixed gas may be cooled to discharge liquefied carbon dioxide.

In addition, the carbon dioxide separation reduction system according to the present invention, a first heat exchanger connected between the vortex tube and the first compressor to cool the hot gas; and a first collecting device connected between the first heat exchanger and the first compressor to collect condensed water.

In the carbon dioxide separation reduction system according to the present invention by the above configuration, the low-temperature gas separated from the vortex tube is put into the chamber, but as liquefied carbon dioxide is separated in the chamber, a large amount of greenhouse gases can be reduced in a short time. there are advantages to

In addition, the carbon dioxide separation reduction system according to the present invention separates and reduces carbon dioxide through a separate process for each of the high temperature gas and the low temperature gas in which the air flow is separated from the vortex tube, and separates the carbon dioxide again by mixing the high temperature gas and the low temperature gas As it can be reduced, there is an advantage in that the carbon dioxide removal efficiency from the exhaust gas is higher.

In addition, the carbon dioxide separation reduction system according to the present invention has the advantage of further improving the compression efficiency through a water remover and a surge tank, etc. By constructing the bypass line, energy waste can be reduced, thereby maximizing efficiency.

1 is a block diagram of a carbon dioxide separation reduction system according to an embodiment of the present invention.
2 is a block diagram of a carbon dioxide separation reduction system according to another embodiment of the present invention.
3 is a view showing a vortex tube according to the present invention.
4 and 5 are views showing a chamber according to an embodiment of the present invention.
6 is a view showing a chamber according to another embodiment of the present invention.
7 is a block diagram of a carbon dioxide separation reduction system according to another embodiment of the present invention.
8 is a block diagram illustrating a system for separating carbon dioxide from a first gas according to another embodiment of the present invention.
9 is a block diagram illustrating a system for separating carbon dioxide from a second gas according to another embodiment of the present invention.

Hereinafter, a carbon dioxide separation reduction system according to various embodiments of the present invention will be described in detail with reference to the accompanying drawings. The drawings introduced below are provided as examples in order to sufficiently convey the spirit of the present invention to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms. Also, like reference numerals refer to like elements throughout.

If there is no other definition in the technical terms and scientific terms used at this time, it has the meaning commonly understood by those of ordinary skill in the art to which this invention belongs, and the gist of the present invention is unnecessary in the following description and accompanying drawings Descriptions of known functions and configurations that may be blurry will be omitted.

1 and 2 relate to a carbon dioxide separation reduction system according to various embodiments of the present invention, and FIGS. 1 and 2 are block diagrams of the carbon dioxide separation reduction system, respectively.

1, the carbon dioxide separation reduction system according to the present invention, a surge tank (110), a compressor (Compressor, 120), the vortex tube (Vortex Tube, 200) and may be configured to include a chamber (Chamber, 300). In this case, the plant 10 may be implemented in various forms, such as a power plant, a factory, a household power generation device, and a mobile body, and is defined as a facility or device that emits carbon dioxide as a generic term.

The surge tank 110 may be a device for stabilizing the pressure of the exhaust gas discharged from the plant 10 . More specifically, the atmospheric pressure and flow rate of the exhaust gas discharged from the plant 10 may be changed in real time, and the surge tank 110 may store the exhaust gas to maintain the atmospheric pressure. In addition, the exhaust gas stabilized in the surge tank 110 may be supplied to the compressor 120 .

The compressor 120 may be configured as a device for compressing the supplied exhaust gas to form a high pressure. At this time, the compressor 120 may be configured in various forms such as a turbo compressor, a positive displacement compressor, a king-floating compressor, and the like. In addition, the gas compressed by the compressor 120 may be supplied to the vortex tube 200 .

The vortex tube 200 may be configured as a device for separating the compressed gas into an air stream into a high-temperature gas and a low-temperature gas. At this time, the vortex tube 200 may be configured in various forms, such as a form in which the high-temperature gas and the low-temperature gas are separated into tubes in both directions, or a form in which the high-temperature gas and the low-temperature gas are ejected in one direction and dispersed in different tubes. . Here, the compressed gas introduced into the vortex tube 200 is separated into a high-temperature gas and a low-temperature gas, and may also be separated according to a difference in mass. Here, components having a relatively high mass may be discharged together with the high-temperature gas, and components having a low mass may be discharged together with the low-temperature gas.

The chamber 300 may receive a low-temperature gas from the vortex tube 200 . In addition, the chamber 300 may separate carbon dioxide from the low-temperature gas, and may be configured to separate the condensate from the chamber 300 by liquefying the carbon dioxide. Accordingly, carbon dioxide and moisture may be removed from the low-temperature gas discharged through the chamber 300 . At this time, the high-temperature gas discharged from the vortex tube 200 may also be formed to be discharged to the outside through a separate separation reduction line.

Referring to FIG. 2 , the carbon dioxide separation reduction system according to the present invention is connected between the vortex tube 200 and the chamber 300 to cool the low-temperature gas separated from the vortex tube 200 by a temperature control unit 300a. may further include. At this time, the temperature control unit 300a includes a cooling device for cooling the low-temperature gas to the liquefaction temperature of carbon dioxide, and further includes a pressure sensor, a temperature sensor, MCU, etc. You can control it to create an environment. At this time, the temperature control unit 300a may be configured to control not only the temperature but also the pressure. And as shown, the temperature control unit 300a including a cooling device may be disposed in various forms, such as disposed at the inlet side of the chamber 300, disposed at the outlet side from which the condensed water is discharged, or both.

Carbon dioxide separation reduction system according to the present invention, the surge tank 110, the bypass line (By-Pass Line, 130) connected between the temperature control unit (300a), and on the bypass line (130) It may further include a bypass valve 131 to be installed. Accordingly, a portion of the exhaust gas from the surge tank 110 may be introduced into the temperature control unit 300a to be mixed with the low-temperature gas, and at this time, the mixed gas may lower the temperature based on the pressure changed as the pressure is changed. can be controlled.

The carbon dioxide separation reduction system according to the present invention further includes a moisture removal device (100) disposed between the plant 10 and the surge tank 110 or between the surge tank 110 and the compressor 120 can do. At this time, the moisture eliminator 100 and a heat exchanger (Heat Exchanger, 101) for cooling the exhaust gas through a refrigerant (Refrigerant). It may be configured to include a collection device (Collection Device, 102) for collecting condensate from the cooled exhaust gas. Accordingly, the exhaust gas discharged from the plant 10 may be cooled to remove moisture, and as the exhaust gas from which moisture has been removed is compressed in the compressor 120, the compression efficiency may be further increased. In addition, in the collection device, liquefied carbon dioxide may be included in the condensed water and discharged.

In the carbon dioxide separation reduction system according to the present invention, some of the gas discharged from the chamber 300 may be supplied to the heat exchanger 101 and used as a refrigerant. In addition, it may further include a front end heat exchanger (100a) disposed on the front side of the surge tank 110 according to the present invention, and some of the gas discharged from the chamber 300 is directed to the front end heat exchanger (100a). It may be supplied and used as a refrigerant. In this case, the front end side of the surge tank 110 may be a side connected to the plant 10 .

Figure 3 relates to a carbon dioxide separation reduction system according to the present invention, Figure 3 is a view showing a vortex tube.

Referring to FIG. 3 , the vortex tube 200 according to the present invention may have various shapes, such as bidirectional or unidirectional, as described above, and among them, those configured in the bidirectional form will be described in more detail. The high pressure gas compressed in the compressor 120 may be introduced into the high pressure gas supply pipe 210 of the vortex tube 200 . In addition, the high-pressure gas introduced through the high-pressure gas supply pipe 210 may flow to one side along the inner circumferential surface of the first pipe 220 through a vortex generator installed therein. In this case, the vortex generator may be a device that rotates the fluid at a high rpm. And the high-pressure gas flowing into the first pipe 220 can be separated into high-temperature/low-temperature through the control valve 230, and the high-temperature gas flows to one side and is discharged, and the low-temperature gas (Low) -Temperature Gas) can flow to the other side. At this time, the low-temperature gas may flow to the center of the first pipe 220 , and may be supplied to the chamber 300 through the second pipe 240 disposed in the other direction. Here, the control valve 230 is, for example, composed of a throttle valve, has an overall smaller diameter than the diameter of the vortex tube 200 and the first pipe 220, has a circular shape when viewed from a vertical cross section, and has a horizontal cross section It may be configured in a form that becomes narrower toward the inner side when viewed from.

4 and 5 relate to a system for reducing carbon dioxide separation according to an embodiment of the present invention, and FIGS. 4 and 5 are views showing a chamber, respectively.

4 and 5 , the chamber 300 according to an embodiment of the present invention includes a housing 310 , a connection pipe 320 , a discharge pipe 330 , a first filter 340 or a guide part 350 . It may be composed of The housing 310 may have a hollow interior, the connection pipe 320 may be connected to the side, and the discharge pipe 330 may be connected to the upper part. The discharge pipe 330 may be a pipe through which carbon dioxide is removed and the low-temperature gas discharged to the outside flows. In this case, the first filter 340 may be disposed on the discharge pipe 330 , and condensed water or foreign substances may be filtered out of the first filter 340 to limit the flow to the discharge pipe 330 .

The connection pipe 320 may be connected to the second pipe 240 of the vortex tube 200 , and a temperature control unit 300a may be disposed between the second pipe 240 and the connection pipe 320 . have. In addition, the bypass line 130 may also be connected to the connection pipe 320 , and the temperature control unit 300a may be disposed between the bypass line 130 and the connection pipe 320 . At this time, the second pipe 240 and the bypass line 130 are configured such that the fluid flowing in each pipe is mixed before being introduced into the temperature control unit 300a, or the bypass line 130 is the chamber 300 ) may be directly connected to the inside.

The guide part 350 may be disposed above the connection pipe 320 and may be configured in plurality. More specifically, the plurality of guide parts 350 may be configured in plurality including the first guide part 351 and the second guide part 352 adjacent to each other. At this time, the guide part 350 may extend so that one end is connected to the inner surface of the housing 310 and the other end is inclined downward, and the first guide part 351 and the second guide part 352 adjacent to each other are connected to each other. They may be arranged to face each other. That is, one end of the first guide part 351 may be fixed to one inner surface of the housing 310 , and one end of the second guide part 352 may be fixed to the other inner surface of the housing 310 . In addition, the first guide part 351 and the second guide part 352 are formed to be longer than the radius of the housing 310 , so that the other end of the first guide part 351 is a bottom surface of the second guide part 352 . and may be disposed to face up and down. Accordingly, the low-temperature gas introduced from the connection pipe 320 may flow toward the discharge pipe 330 in a zigzag or spiral shape, and condensed water and foreign substances contained in the low-temperature gas collide with the guide part 350 and fall. can be

The chamber 300 may further include a drain pipe 360 connected to a lower portion of the housing 310 and a second filter 370 disposed at an inlet side of the drain pipe 360 . At this time, the drain pipe 360 may discharge condensed water including liquefied carbon dioxide from the low-temperature gas introduced into the housing 310 , and foreign substances remaining on the condensed water may be filtered by the second filter 370 .

Figure 6 relates to a carbon dioxide separation reduction system according to another embodiment of the present invention, Figure 6 is a view showing a chamber.

Referring to FIG. 6 , a chamber 300 according to another embodiment of the present invention may include a housing 310 , a connection pipe 320 , an exhaust pipe 330 , and a first filter 340 . At this time, the housing 310 may be configured in a shape in which the lower portion becomes narrower toward the lower side, and a connection pipe 320 is connected to a side surface of the housing 310 so that the second pipe 240 of the vortex tube 200 is connected. Low-temperature gas can be supplied from In addition, as described above, a temperature control unit 300a is disposed between the connection pipe 320 and the second pipe 240 to cool the low-temperature gas introduced therein, thereby controlling the carbon dioxide to be liquefied. In addition, the condensed water including liquefied carbon dioxide may be wound downward along the lower inner surface of the housing 310 , and although not specifically indicated, the condensed water may be drained through a drain pipe.

7 relates to a carbon dioxide separation reduction system according to another embodiment of the present invention, and FIG. 7 shows a block diagram of the carbon dioxide separation reduction system, respectively.

Referring to FIG. 7 , the carbon dioxide separation and reduction system according to another embodiment of the present invention, as described above, includes a water remover 100 , a surge tank 110 , a compressor 120 , a vortex tube 200 , and a temperature control unit. (300a) or may include a chamber (300). In addition, after the exhaust gas is separated into high-temperature gas and low-temperature gas in the vortex tube 200 , the high-temperature gas and low-temperature gas may pass through respective cooling systems and condensate may be discharged. To explain this in more detail as follows.

The carbon dioxide separation reduction system according to the present invention is a high-temperature gas tank 400, a first heat exchanger 410, a first collecting device 420, and a first so as to cool the high-temperature gas discharged from the vortex tube 200. It may include a surge tank 430 , a first compressor 440 , or a first vortex tube 450 . At this time, the first heat exchanger 410 may be configured to cool the high-temperature gas through a refrigerant, and the first collecting device 420 is generated from the cooled high-temperature gas through the first heat exchanger 410 . Condensate can be separated and discharged. At this time, the condensed water may contain liquefied carbon dioxide. In addition, the first surge tank 430 may stabilize the pressure of the cooled hot gas, and may compress the hot gas cooled in the first compressor 440 to a high pressure. Furthermore, in the first vortex tube 450 , the high-temperature gas may be separated again into a high-temperature airflow and a low-temperature airflow.

In addition, the carbon dioxide separation reduction system according to the present invention, the low-temperature gas tank 500, the second compressor 510 or the second so that the low-temperature gas passes through the chamber 300 and cools again in a state in which liquefied carbon dioxide is partially removed. It may include a vortex tube 520 . At this time, the low-temperature gas tank 500 may stabilize the pressure of the low-temperature gas discharged from the chamber 300 , and the second compressor 510 may compress the low-temperature gas to a high pressure. Furthermore, the second vortex tube 520 may separate the low-temperature gas into a high-temperature airflow and a low-temperature airflow.

In addition, the carbon dioxide separation reduction system according to the present invention may include a first chamber 610 and a second chamber 620 connected to the first vortex tube 450 and the second vortex tube 520 . At this time, the first chamber 610 may receive a low-temperature airflow of high-temperature gas from the first vortex tube 450 and receive a high-temperature airflow of low-temperature gas from the second vortex tube 520 , and the second chamber 620 may receive a high-temperature airflow of high-temperature gas from the first vortex tube 450 and receive a low-temperature airflow of low-temperature gas from the second vortex tube 520 . Accordingly, the high temperature airflow on the high temperature side and the low temperature airflow on the low temperature side are mixed with each other, and the low temperature side and the high temperature airflow on the low temperature side are mixed with each other, thereby providing a basis for more efficient cooling of a large flow rate of gas. In addition, although not shown, a temperature control unit for cooling the mixed gas may be disposed in each of the first chamber 610 and the second chamber 620 . In addition, each of the first chamber 610 and the second chamber 620 may collect and discharge condensed water containing carbon dioxide liquefied from the mixed gas, and the first gas and the second gas with reduced carbon dioxide are discharged, respectively. can be

8 and 9 relate to a carbon dioxide separation reduction system according to another embodiment of the present invention, and FIGS. 8 and 9 are block diagrams illustrating a system for separating carbon dioxide from a first gas and a second gas, respectively. indicates.

Referring to FIGS. 8 and 9 , a carbon dioxide separation reduction system according to another embodiment includes a sub-compressor 630 for compressing the first gas or the second gas to a high pressure, the high-pressure first gas or the second gas It may further include a sub-vortex tube 640 for separating the air flow, and a sub-chamber 650 for separating carbon dioxide from the low-temperature air flow of the first gas or the second gas. In this case, the first gas, the second gas, or a gas in which the first gas and the second gas are mixed may flow to the sub-compressor 630 , the sub-vortex tube 640 , and the sub-chamber 650 .

As shown in FIG. 8 , the carbon dioxide separation reduction system according to the present invention cools the 1-1 gas, which is the high-temperature airflow of the first gas discharged from the sub-vortex tube 640, in the sub-hot gas tank 700 ), a third heat exchanger 710 , a third collection device 720 , a third surge tank 730 , a third compressor 740 , or a third vortex tube 750 . In this case, the third heat exchanger 710 may be configured to cool the 1-1 gas through a refrigerant, and the third collection device 720 may be configured to cool the first gas cooled through the third heat exchanger 710 . -Condensate generated from gas can be separated and discharged. At this time, the condensed water may contain liquefied carbon dioxide. And the third surge tank 730 may stabilize the pressure of the cooled 1-1 gas, and may compress the 1-1 gas cooled by the third compressor 740 to a high pressure. Furthermore, in the third vortex tube 750 , the 1-1 gas may be separated again into a high-temperature airflow and a low-temperature airflow.

In addition, the carbon dioxide separation reduction system according to the present invention is a sub-low temperature gas tank ( 800), a fourth compressor 810 or a fourth vortex tube 820 may be included. At this time, the sub-low temperature gas tank 800 may stabilize the pressure of the 1-2 gas discharged from the chamber 800, and the fourth compressor 810 may compress the 1-2 gas to a high pressure. have. Furthermore, in the fourth vortex tube 820 , the first and second gases may be separated again into a high-temperature airflow and a low-temperature airflow.

In addition, the carbon dioxide separation reduction system according to the present invention may include a third chamber 910 and a fourth chamber 920 connected to the third vortex tube 750 and the fourth vortex tube 820 . At this time, the third chamber 910 may receive the low-temperature airflow of the 1-1 gas from the third vortex tube 750 and receive the high-temperature airflow of the 1-2 gas from the fourth vortex tube 820 . In addition, the fourth chamber 920 receives the high-temperature airflow of the 1-1 gas from the third vortex tube 750 and receives the low-temperature airflow of the 1-2 gas from the fourth vortex tube 820 . can Accordingly, the high temperature airflow on the high temperature side and the low temperature airflow on the low temperature side are mixed with each other, and the low temperature side and the high temperature airflow on the low temperature side are mixed with each other, thereby providing a basis for more efficient cooling of a large flow rate of gas. In addition, although not shown, a temperature control unit for cooling the mixed gas may be disposed in each of the third chamber 910 and the fourth chamber 920 . In addition, each of the third chamber 910 and the fourth chamber 920 may collect and discharge condensed water containing carbon dioxide liquefied from the mixed gas, and the third gas and the fourth gas with reduced carbon dioxide are discharged, respectively. can be

Alternatively, as shown in FIG. 9, the carbon dioxide separation reduction system according to the present invention cools the 2-1 gas, which is a high-temperature airflow of the second gas discharged from the sub-vortex tube 640, in a sub-hot gas tank ( 700 ), a third heat exchanger 710 , a third collection device 720 , a third surge tank 730 , a third compressor 740 , or a third vortex tube 750 . In this case, the third heat exchanger 710 may be configured to cool the 2-1 gas through a refrigerant, and the third collecting device 720 may be configured to cool the second gas through the third heat exchanger 710 . -Condensate generated from gas can be separated and discharged. At this time, the condensed water may contain liquefied carbon dioxide. And the third surge tank 730 may stabilize the pressure of the cooled 2-1 gas, and may compress the 2-1 gas cooled by the third compressor 740 to a high pressure. Furthermore, in the third vortex tube 750 , the 2-1 gas may be separated again into a high-temperature airflow and a low-temperature airflow.

In addition, the carbon dioxide separation reduction system according to the present invention is a sub-low temperature gas tank ( 800), a fourth compressor 810 or a fourth vortex tube 820 may be included. At this time, the sub-low temperature gas tank 800 may stabilize the pressure of the 2-2 gas discharged from the chamber 800, and the fourth compressor 810 may compress the 2-2 gas to a high pressure. have. Furthermore, in the fourth vortex tube 820 , the 2-2 gas may be separated again into a high-temperature airflow and a low-temperature airflow.

In addition, the carbon dioxide separation reduction system according to the present invention may include a third chamber 910 and a fourth chamber 920 connected to the third vortex tube 750 and the fourth vortex tube 820 . At this time, the third chamber 910 may receive the low-temperature airflow of the 2-1 gas from the third vortex tube 750 and receive the high-temperature airflow of the 2-2 gas from the fourth vortex tube 820 . and the fourth chamber 920 receives the high temperature airflow of the 2-1 gas from the third vortex tube 750 and receives the low temperature airflow of the 2-2 gas from the fourth vortex tube 820 . can Accordingly, the high temperature airflow on the high temperature side and the low temperature airflow on the low temperature side are mixed with each other, and the low temperature side and the high temperature airflow on the low temperature side are mixed with each other, thereby providing a basis for more efficient cooling of a large flow rate of gas. In addition, although not shown, a temperature control unit for cooling the mixed gas may be disposed in each of the third chamber 910 and the fourth chamber 920 . In addition, each of the third chamber 910 and the fourth chamber 920 may collect and discharge condensed water containing carbon dioxide liquefied from the mixed gas, and the third gas and the fourth gas with reduced carbon dioxide are discharged, respectively. can be

As described above, the present invention has been described with specific details such as specific components and limited embodiment drawings, but these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above one embodiment. No, various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims described below, but also all those with equivalent or equivalent modifications to the claims are said to be within the scope of the spirit of the present invention. will be.

10 : Plant
100: moisture remover 100a: shear heat exchanger
101: heat exchanger 102: collecting device
110: surge tank 120: compressor
130: bypass line 131: bypass valve
200: vortex tube
210: high pressure gas supply pipe 220: first pipe
230: control valve 240: second pipe
300: chamber 300a: temperature control unit
310: housing 320: connector
330: discharge pipe 340: first filter
350: guide unit
351: first guide part 352: second guide part
360: drain pipe 370: second filter
400: high-temperature gas tank 410: first heat exchanger
420: first collection device 430: first surge tank
440: first compressor 450: first vortex tube
500: low-temperature gas tank 510: second compressor
520: second vortex tube
610: first chamber 620: second chamber
630: sub compressor 640: sub vortex tube
650: sub chamber
700: sub high-temperature gas tank 710: third heat exchanger
720: third collection device 730: third surge tank
740: third compressor 750: third vortex tube
800: sub low-temperature gas tank 810: fourth compressor
820: fourth vortex tube
910: third chamber 920: fourth chamber

Claims (11)

In the carbon dioxide separation reduction system for removing carbon dioxide from the exhaust gas of a plant,
Compressor for compressing exhaust gas to high pressure;
a vortex tube that separates the high-temperature gas and the low-temperature gas from the high-pressure exhaust gas at both ends;
a chamber connected to one end of the vortex tube to separate liquefied carbon dioxide from the low-temperature gas introduced;
a first compressor for compressing the hot gas separated from the vortex tube at a high pressure;
a first vortex tube connected to the first compressor to separate the airflow of the hot gas;
a second compressor for compressing the low-temperature gas discharged through the chamber to a high pressure;
a second vortex tube connected to the second compressor to separate the airflow of the low-temperature gas;
a first chamber receiving a low-temperature airflow of high-temperature gas from the first vortex tube and receiving a high-temperature airflow of low-temperature gas from the second vortex tube;
a second chamber receiving a high-temperature airflow of a high-temperature gas from the first vortex tube and receiving a low-temperature airflow of a low-temperature gas from the second vortex tube;
a first heat exchanger connected between the vortex tube and the first compressor to cool the hot gas; and
a first collecting device connected between the first heat exchanger and the first compressor to collect condensed water;
including,
The chamber is
A housing, a connection pipe connecting one end of the vortex tube and the housing, an exhaust pipe disposed on the upper portion of the housing to exhaust gas, and a drain pipe disposed below the housing to discharge liquefied carbon dioxide,
each in the first chamber and the second chamber,
Carbon dioxide separation reduction system, characterized in that the mixed gas is cooled and liquefied carbon dioxide is discharged.
According to claim 1,
a surge tank disposed between the plant and the compressor to stabilize the pressure of the exhaust gas; and
a moisture eliminator disposed between the plant and the surge tank to remove moisture in the exhaust gas;
further comprising,
The moisture eliminator,
A carbon dioxide separation reduction system comprising: a heat exchanger for lowering the temperature of exhaust gas using a refrigerant; and a collecting device for separating condensed water from the exhaust gas discharged from the heat exchanger.
3. The method of claim 2,
Carbon dioxide separation reduction system, characterized in that the gas discharged from the chamber is supplied as a refrigerant of the heat exchanger.
According to claim 1,
a surge tank disposed between the plant and the compressor to stabilize the pressure of the exhaust gas; and
a front end heat exchanger disposed at the front end of the surge tank;
further comprising,
Carbon dioxide separation reduction system, characterized in that the gas discharged from the chamber is supplied as a refrigerant of the front end heat exchanger.
3. The method of claim 2,
a bypass line connecting the surge tank or the collection device and the housing of the chamber;
Carbon dioxide separation reduction system, characterized in that it further comprises.
According to claim 1,
The chamber is
Carbon dioxide separation reduction system, characterized in that it further comprises a cooling device for cooling the liquid carbon dioxide so as to prevent the liquid carbon dioxide from being vaporized.
delete According to claim 1,
a sub-compressor for compressing the first gas exhausted from the first chamber or the second gas exhausted from the second chamber to a high pressure;
a sub-vortex tube for separating the high-pressure first gas or the second gas stream; and
a sub-chamber for separating liquefied carbon dioxide from the low-temperature airflow of the first gas or the second gas;
Carbon dioxide separation reduction system, characterized in that it further comprises.
In the carbon dioxide separation reduction system for removing carbon dioxide from the exhaust gas of a plant,
Compressor for compressing exhaust gas to high pressure;
a vortex tube that separates the high-temperature gas and the low-temperature gas from the high-pressure exhaust gas at both ends;
a chamber connected to one end of the vortex tube to separate liquefied carbon dioxide from the low-temperature gas introduced;
a first compressor for compressing the hot gas separated from the vortex tube at a high pressure;
a first vortex tube connected to the first compressor to separate the airflow of the hot gas;
a second compressor for compressing the low-temperature gas discharged through the chamber to a high pressure;
a second vortex tube connected to the second compressor to separate the airflow of the low-temperature gas;
a first chamber receiving a low-temperature airflow of high-temperature gas from the first vortex tube and receiving a high-temperature airflow of low-temperature gas from the second vortex tube;
a second chamber receiving a high-temperature airflow of a high-temperature gas from the first vortex tube and receiving a low-temperature airflow of a low-temperature gas from the second vortex tube;
a sub-compressor for compressing the first gas exhausted from the first chamber or the second gas exhausted from the second chamber to a high pressure;
a sub-vortex tube for separating the high-pressure first gas or the second gas stream;
a sub-chamber for separating liquefied carbon dioxide from the low-temperature airflow of the first gas or the second gas;
a third compressor receiving the 1-1 gas, which is a high-temperature air stream of the first gas, and compressing it to a high pressure;
a third vortex tube for separating the high-pressure air flow of the 1-1 gas;
a fourth compressor for receiving the first-2 gas, which is a low-temperature air stream of the first gas discharged from the sub-chamber, and compressing it to a high pressure;
a fourth vortex tube for separating the airflow of the first and second gases at high pressure;
a third chamber receiving the low-temperature airflow of the 1-1 gas from the third vortex tube and receiving the high-temperature airflow of the 1-2 gas from the fourth vortex tube; and
a fourth chamber receiving the high-temperature airflow of the 1-1 gas from the third vortex tube and receiving the low-temperature airflow of the 1-2 gas from the fourth vortex tube;
including,
The chamber is
A housing, a connection pipe connecting one end of the vortex tube and the housing, an exhaust pipe disposed on the upper portion of the housing to exhaust gas, and a drain pipe disposed below the housing to discharge liquefied carbon dioxide,
each in the first chamber, the second chamber, the third chamber and the fourth chamber;
Carbon dioxide separation reduction system, characterized in that the mixed gas is cooled and liquefied carbon dioxide is discharged.
In the carbon dioxide separation reduction system for removing carbon dioxide from the exhaust gas of a plant,
Compressor for compressing exhaust gas to high pressure;
a vortex tube that separates the high-temperature gas and the low-temperature gas from the high-pressure exhaust gas at both ends;
a chamber connected to one end of the vortex tube to separate liquefied carbon dioxide from the low-temperature gas introduced;
a first compressor for compressing the hot gas separated from the vortex tube at a high pressure;
a first vortex tube connected to the first compressor to separate the airflow of the hot gas;
a second compressor for compressing the low-temperature gas discharged through the chamber to a high pressure;
a second vortex tube connected to the second compressor to separate the airflow of the low-temperature gas;
a first chamber receiving a low-temperature airflow of high-temperature gas from the first vortex tube and receiving a high-temperature airflow of low-temperature gas from the second vortex tube;
a second chamber receiving a high-temperature airflow of a high-temperature gas from the first vortex tube and receiving a low-temperature airflow of a low-temperature gas from the second vortex tube;
a sub-compressor for compressing the first gas exhausted from the first chamber or the second gas exhausted from the second chamber to a high pressure;
a sub-vortex tube for separating the high-pressure first gas or the second gas stream;
a sub-chamber for separating liquefied carbon dioxide from the low-temperature airflow of the first gas or the second gas;
a third compressor receiving the 2-1 gas, which is a high-temperature air stream of the second gas, and compressing it to a high pressure;
a third vortex tube for separating the airflow of the 2-1 gas at high pressure;
a fourth compressor for receiving the 2-2 gas, which is a low-temperature air flow of the second gas discharged from the sub-chamber, and compressing it to a high pressure;
a fourth vortex tube that separates the airflow of the 2-2 gas at high pressure;
a third chamber receiving the low-temperature airflow of the 2-1 gas from the third vortex tube and receiving the high-temperature airflow of the 2-2 gas from the fourth vortex tube; and
a fourth chamber receiving the high-temperature airflow of the 2-1 gas from the third vortex tube and receiving the low-temperature airflow of the 2-2 gas from the fourth vortex tube;
including,
The chamber is
A housing, a connection pipe connecting one end of the vortex tube and the housing, an exhaust pipe disposed on the upper portion of the housing to exhaust gas, and a drain pipe disposed below the housing to discharge liquefied carbon dioxide,
each in the first chamber, the second chamber, the third chamber and the fourth chamber;
Carbon dioxide separation reduction system, characterized in that the mixed gas is cooled and liquefied carbon dioxide is discharged. delete

Images