WO2018026076A1

WO2018026076A1 - Co2 absorbent spray nozzle and spray tower type co2 absorption device comprising same

Info

Publication number: WO2018026076A1
Application number: PCT/KR2017/000432
Authority: WO
Inventors: 이진원; 조민기; 최문경
Original assignee: 포항공과대학교 산학협력단
Priority date: 2016-08-02
Filing date: 2017-01-12
Publication date: 2018-02-08
Also published as: KR20180014951A

Abstract

Disclosed are a CO₂ absorbent spray nozzle and a spray tower type CO₂ absorption device comprising the same. A CO₂ absorbent spray nozzle according to an aspect of the present invention comprises: a nozzle body having a cylindrical structure in which a single CO2 absorbent supply pipe is connected to the upper portion thereof, an absorbent receiving part having a predetermined volume is formed inside thereof, and an opening is formed in the lower portion thereof; and a nozzle plate installed in the lower opening of the nozzle body and having a plurality of nozzle holes, the sizes of which are the same over the entire nozzle plate or are different in each area of the nozzle plate, wherein a pressure pipe is connected to the upper portion of the nozzle body on the other side thereof, and under the control of a pressure regulator connected to the pressure pipe, a CO2 absorbent filled to a predetermined height in the receiving part is sprayed into a CO2 capturing reactor through the nozzle holes, such that the CO2 absorbent is uniformly distributed in the form of atomized droplets in the reactor.

Description

CO2 absorbent spray nozzle and spray tower type CO2 absorber including the same

The present invention relates to a CO2 absorbent spray nozzle and a spray tower type CO2 absorber including the same, and in particular to spray the absorbent uniformly in the form of droplets (droplet) in the spray tower CO2 absorbent spray to significantly improve the capture performance of carbon dioxide It relates to a nozzle and a spray tower type CO2 absorber including the same.

Carbon dioxide is one of the main causes of atmospheric warming. The largest source of carbon dioxide is various combustion apparatuses such as an engine and a power plant, and chemical absorption using a liquid absorbent is well known as a representative technique for capturing and recovering carbon dioxide from exhaust gases emitted from these combustion apparatuses. Chemical absorption is more economical than other technologies, and the CO2 capture rate and capacity is higher.

Collection techniques by chemical absorption can be broadly classified into a packing tower method and a spray tower method. The filling tower method is to fill a small size of packing material inside the absorption tower and collect carbon dioxide by flowing an absorbent over the surface of the filling material. The spray tower method sprays the absorbent into the spray tower in the form of small droplets. This method maximizes the contact area with the gas.

In the case of the packed tower method, a thin film formed on the surface of the filler material is in contact with the target gas (carbon dioxide). Because of the small surface area created by the given amount of liquid, the gas-absorbing surface is confined to one side exposed to the gas, and the capture rate is slow because the gas adsorbed on the surface flows in one direction only from the surface into the filler.

In addition, since expensive fillers are used, they are costly to manufacture, and there is a drawback in performance due to clogging (filling) of the fillers due to solids generated in the absorbent during operation. There is a costly disadvantage. Of course, there are practical advantages such as flexibility in load fluctuation of gas and absorbent, low pressure loss and ease of manufacture.

The theoretical collection performance is superior to that of the spray tower method compared to the absorption tower method. Liquid (droplet) has to have a contact area with the largest form between creating gas and a liquid which may have a given liquid, and the adsorbed gas on the surface to maximize the absorption speed because the spread in the center of droplets in all directions Because of the view.

However, the actual experiment shows that the spray tower method has a significantly lower gas collection performance than the packed tower method. Therefore, the existing commercialized capture device is mostly using the filling tower method. While the actual performance of the spray tower method is far short of the theoretical performance, the performance of the packed tower method is close to the theoretical performance and has several practical advantages.

On the other hand, absorbents used in practical carbon dioxide capture devices are quite expensive. Therefore, a regeneration facility is provided for repetitive use by regenerating expensive absorbents. The regeneration facility basically has a mechanism to heat the absorbent used for gas collection, return it to its original state and feed it back to the collecting device. The biggest obstacle to the practical use of the facility is the cost of thermal energy for regeneration.

In order to ensure the economics of the operation of the device, the use of thermal energy for regeneration should be kept to a minimum. The thermal energy required for regeneration is directly proportional to the amount of absorbent to be heated. Therefore, the use of absorbents should be minimized to minimize the use of thermal energy. However, if the absorbent is reduced, the collection performance of the gas (carbon dioxide contained in the exhaust gas) of the device is inevitably deteriorated.

According to the experiment, the collection tower type capture performance is good. However, in the case of the filling tower method, it is difficult to control the thickness or speed of the absorbent liquid film (film) which determines the collection performance by the current technology, and thus it is difficult to expect the improvement of the filling tower performance. The spray tower method is theoretically expected to outperform the packed tower method, but the actual performance is quite low.

This is because the actual conditions in the spray tower are quite different from the ideal conditions assumed in theory, and there are many factors that are difficult to predict. Among the main factors that are, and the like can be given flow rate of the gas in the absorption tower non-uniform, a spray droplet (droplet) spatially non-uniform distribution, the spray droplet size non-uniformity, and spraying a large amount of loss of the wall of the enemy drops of. Among them, non-uniform droplet size is the main factor.

In the case of the spray tower method, gas adsorbed on the surface of the droplet (absorbent) must diffuse into the droplet to continuously absorb new gas on the surface. However, the larger the droplets, the longer the diffusion time inside (approximately proportional to the square of the diameter), but the less time the reactor falls (roughly inversely proportional to the diameter), and the larger the droplets, the lower the saturation.

In addition, the amount of liquid in the droplets is proportional to the cube of the diameter. As a result, most of the supplied liquids (absorbents) are concentrated in a large droplet state, and a large droplet of absorbent has low saturation, so the overall average saturation is inevitably lowered. On the contrary, the more uniform the size distribution of the droplets, the more the gas absorption proceeds substantially the same, which in turn means that the overall average saturation can be increased.

Efforts to improve the performance of the spray tower method has been made in many ways. Most studies aim to increase absorption efficiency. However, there is a limited attempt to increase the flow rate of the absorbent or to give the rotational component to the gas flow or the droplet flow, and despite these attempts, the improvement effect obtained from them is very small.

Moreover, while increasing the flow rate of the absorbent is obviously effective in increasing the absorption efficiency, as mentioned above, there is a dilemma that is disadvantageous in terms of economic efficiency because more heat energy is required for regeneration. As a result, the method of uniformizing the size distribution of the droplets sprayed in the spray tower is the only solution that can increase the average saturation, and thus, the present invention has been devised.

The technical problem to be solved by the present invention is to provide a CO2 absorbent spray nozzle for spraying the CO2 absorbent in the form of droplets (droplet) to have an optimal spatiotemporal distribution in the reactor and a spray tower type CO2 absorber including the same.

According to one aspect of the present invention as a means for solving the problem,

A nozzle for spraying a CO 2 absorbent inside the CO 2 capture reactor,

A nozzle body having a lower open tubular structure having a single CO 2 absorbent supply pipe connected to the upper portion thereof, and having any volume of the absorbent containing portion therein; And

And a nozzle plate installed in the lower opening of the nozzle body, the nozzle plate having a plurality of nozzle holes having the same size or different one or more of arrangement, shape, size, and number of areas in the entire area.

The pressure tube is connected to the other side of the upper part of the nozzle body, and the CO 2 absorbent filled to the receiving part at an arbitrary height under the control of a pressure regulator connected to the pressure tube is formed in the form of droplets atomized through the nozzle hole. It provides a CO 2 absorbent spray nozzle, characterized in that spraying in a uniform distribution in the collection reactor.

Here, the absorbent accommodating part inside the nozzle body may be divided into a plurality of partition partition walls, and the nozzle plate is a CO2 capture reactor in combination with a single structure or a plurality of unit nozzle plates corresponding to the cross-sectional shape and size of the CO2 capture reactor. It may be configured in the form of an assembly structure to correspond to the cross-sectional shape and size of.

Preferably, the nozzle plate may be configured in the form of a convex plate or a concave plate in which the outlet direction of each nozzle hole is the same, or a convex plate or a concave plate that is concave up or down.

In addition, when partitioned by area, the shape and size of nozzle holes in the same area are the same, and at least one or more of the arrangement, shape, size and number of nozzle holes are different between different areas, so that optimal CO 2 absorption is achieved. It is desirable to allow the spraying of the CO 2 absorbent to take place in a distribution that can be exerted.

In addition, the CO2 absorbent spray nozzle according to an aspect of the present invention is controlled by the pressure regulator to control the CO2 absorbent spray flow rate and pressure through the nozzle plate by adjusting the pressure inside the receiving portion by the pressure control gas supplied to the receiving portion through the pressure tube. Can be.

According to another aspect of the present invention as a means of solving the problem,

A spray tower type CO2 absorber that sprays a CO2 absorbent into a reactor in the form of droplets to absorb and recover CO2.

A CO2 capture reactor having a reaction space in which a mixed gas introduced through the lower mixed gas inlet is moved upwardly and a CO2 capture reaction is caused by a CO2 absorbent;

A CO2 absorbent spray nozzle installed at an upper end of the CO2 capture reactor and spraying a CO2 absorbent in a uniform distribution into the reaction space in the form of atomized droplets; And

A spray baffle installed in the CO2 capture reactor above the mixed gas inlet and having a plurality of slits or holes formed in the reaction space so that the mixed gas to be treated flows into a uniform velocity distribution; It provides a CO2 absorption device of the type.

Here, the absorbent outlet may be formed at the bottom side of the CO2 capture reactor, and the mixed gas outlet may be formed at the top of the CO2 capture reactor on one side or on both sides of the CO2 absorbent spray nozzle opposite the absorbent outlet.

In addition, the baffles may be formed with slits or holes having the same size at equal intervals, or slits or holes with different sizes may be formed at equal intervals.

Alternatively, slits or holes of different sizes may be formed at uneven intervals.

In addition, the spray tower type CO2 absorber according to another aspect of the present invention, the CO2 absorbent spray nozzle from at least one droplet saturation sensor provided in the CO2 capture reactor and the droplet saturation information for each position provided by the droplet saturation sensor The control unit may further include a control unit for outputting a pressure control signal, wherein the control unit determines a control value of the pressure regulator from the droplet saturation information provided by the droplet saturation sensor, and controls the pressure regulator with the determined control value to control the CO 2 absorbent. The CO 2 absorbent spray flow rate and pressure through the spray nozzle can be controlled.

According to the CO 2 absorbent spray nozzle according to an aspect of the present invention, the liquid absorbent may be sprayed to have an optimal spatiotemporal distribution in the reactor in the form of droplets of uniform size. In other words, by eliminating the non-uniformity of the droplet size having the greatest effect on the performance in the spray tower type capture technology through the absorbent spray nozzle unit, a significant performance improvement in CO2 treatment through the spray tower method can be expected.

In addition, according to the spray tower type CO2 absorber according to another aspect of the present invention, while using a nozzle unit for injecting a liquid absorbent in the form of droplets (droplet) having a uniform size of a single stem, the gas inlet Baffles can be applied to resolve the nonuniformity of gas flow, another major factor that greatly affects the collection performance.

Figure 1 is a schematic diagram showing a preferred embodiment of the spray tower type CO2 absorber comprising a CO2 absorbent spray nozzle.

2 through 4 illustrate various preferred embodiments of the baffle shown in FIG. 1.

5 is an enlarged conceptual view of the CO 2 absorbent spray nozzle shown in FIG. 1;

6 to 7 illustrate various embodiments of the nozzle plate.

Fig. 8 illustrates a preferred arrangement of nozzle holes formed in the nozzle plate.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings of the present invention.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. The terms "comprise" or "have" herein are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and that one or more other features It should be understood that it does not exclude in advance the possibility of the presence or addition of numbers, steps, operations, components, parts or combinations thereof.

In addition, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

In addition, the terms “… unit”, “… unit”, “… module”, etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. Can be.

In the description with reference to the accompanying drawings, the same reference numerals are assigned to the same components, and duplicate description thereof will be omitted. In the following description of the present invention, if it is determined that the detailed description of the related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a schematic diagram showing a preferred embodiment of a spray tower type CO2 absorber including a CO2 absorbent spray nozzle.

Referring to FIG. 1, the spray tower type CO2 absorber 1 is largely a spray tower type CO2 absorber that sprays a CO2 absorbent into the reactor 10 in the form of droplets to absorb CO2 from the mixed gas. , A CO 2 capture reactor 10, which forms a reaction space 100 in which a CO 2 capture reaction occurs, and a CO 2 absorbent spray nozzle 20 spraying the CO 2 absorbent into the reaction space 100 in the form of droplets.

The CO 2 capture reactor 10 has a reaction space 100 formed therein and a mixed gas inlet 12 at one lower side thereof. The mixed gas containing the CO 2 to be treated is introduced into the reaction space 100 through the mixed gas inlet 12, and the mixed gas is moved upward by the specific gravity difference with air, among which CO 2 is the CO 2 absorbent spray nozzle. 20 is trapped in the CO2 absorbent to spray.

An absorbent outlet 16 is formed at the bottom side of the CO 2 capture reactor 10. And the mixed gas outlet 14 is formed on the upper side of the CO2 capture reactor 10 on one side or both sides of the opposite CO2 absorbent spray nozzle 20. Accordingly, the mixed gas from which the CO 2 is removed through the capture reaction is discharged to the outside through the mixed gas outlet 14, and the absorbent that collects the CO 2 is moved to the subsequent treatment facility through the absorbent outlet 16.

Subsequent treatment facilities (not shown) may be configured to regenerate, via heating, the absorbent that captured the CO 2. For this purpose, the subsequent treatment facility may be configured in the form of a heating means, such as one or more burners and a condenser, wherein the CO 2 absorbent spray nozzle 20 is located above the reaction space 100 of the CO 2 capture reactor 10. CO 2 absorber is sprayed in a uniform distribution in the form of atomized droplets.

The CO 2 absorbent spray nozzle 20 is installed on the top of the CO 2 capture reactor 10 to spray the CO 2 absorbent in a uniform distribution in the reaction space 100 in the form of droplets. Unlike the conventional method of forming droplets from a liquid column or a liquid film using centrifugal force or electromagnetic vibration, it has a simple mechanism of separating and producing a very thin liquid column using only hydrodynamic instability due to the surface tension of the liquid.

The spray flow rate and pressure of the droplet form CO 2 absorbent through the CO 2 absorbent spray nozzle 20 can be adjusted from the control of the pressure regulator 70 by the controller 60. The control unit 60 is preferably a pressure of the CO2 absorbent spray nozzle 20 from the droplet saturation information for each position in the reaction space 100 provided by one or more droplet saturation sensor 50 provided in the CO2 capture reactor 10 Output a control signal.

Specifically, the controller 60 determines a control value of the pressure regulator 70 from information provided by the droplet saturation sensor 50. And by controlling the pressure regulator 70 to the determined control value by adjusting the amount of pressure control gas supplied to the inner receiving portion 220 of the CO2 absorbent spray nozzle 20, the flow rate of the mixed gas in the reactor 10 Depending on the distribution, the CO2 absorbent is controlled to be sprayed at a spray flow rate and pressure that can achieve an optimal trapping performance.

That is, by feedback control of the pressure regulator 70 by the controller 60 performed based on the information provided by the droplet saturation sensor 50, it is introduced into the reaction space 100 through the mixed gas inlet 12 and is raised. The CO2 absorbent is sprayed at a spray flow rate and a pressure at which an optimal trapping performance can be exhibited according to the flow rate or distribution in the reaction space 100 of the treated gas mixture (combustion gas containing CO2 components) to be moved.

Reference numeral 30 denotes a baffle mounted in the CO 2 capture reactor 10 above the mixed gas inlet 12. The baffle 30 is introduced into the reaction space 100 through the mixed gas inlet 12 in a uniform velocity distribution so that the optimum capture reaction with the CO 2 absorbent in the reaction space 100 can occur. It may be configured in the form of a porous panel having a plurality of slits (Slit, 300) or holes (Hole).

2 to 4 are views illustrating various preferred embodiments of the baffle applied to the present embodiment, and slit baffles are shown as an example.

As shown in FIGS. 2 to 4, the slits Slit 300 formed in the baffle 30 may be formed at equal intervals with the same size (see FIG. 2), or may be formed at equal intervals with different sizes (FIG. 3). Reference). Unlike this, as illustrated in FIG. 4, slits 300 having different sizes may be formed at uneven intervals. Of course, it is not limited to the illustrated slit (Slit, 300) shape can be replaced by a hole (Hole).

Preferably, as the distance from the gas inlet 12 increases, the width (or size of the hole) of the slit 300 increases, or the distance between the slits 300 (or the distance between the holes) is narrowed, so that more slits ( By distributing 300 (or holes), the mixed gas introduced from the mixed gas inlet 12 can flow into the reaction space 100 at a uniform velocity distribution (flow velocity distribution) while passing through the baffle 30. It is good.

Of course, the velocity distribution (velocity distribution) may vary depending on the position of the mixed gas inlet 12. Therefore, the distribution of the inhomogeneous flow resistance of the inlet side of the baffle 30, which depends on the position of the mixed gas inlet 12, is derived through pre-simulation or repeated experiments, and after passing through the baffle 30 based on the result, the gas Arrange the slits 300, or holes so that the flow velocity and pressure of V have a desired flow velocity and pressure distribution.

FIG. 5 is an enlarged conceptual view of the CO 2 absorbent spray nozzle shown in FIG. 1.

Referring to FIG. 5, the CO 2 absorbent spray nozzle 20 includes a nozzle body 22 and a nozzle plate 24 mounted below the nozzle body 22. Any volume of CO 2 absorbent is accommodated in the nozzle body 22, the CO2 absorbent filled in the nozzle body 22 is sprayed in the form of droplets (fine droplets) of fine size in the reaction space 100 described above. A plurality of nozzle holes 240 having a fine size are formed.

The nozzle body 22 is a bottom open cylindrical structure having any volume of absorbent accommodating portion 220 formed therein, and supplies a single CO 2 absorbent to the upper portion so that the CO 2 absorbent is always maintained at a constant level. Pipe 23 may be connected. The pressure tube 40 is connected to the other side of the upper part of the nozzle body 22, and the pressure regulating gas is supplied to the upper space of the receiving part 220 through the pressure tube 40.

The pressure regulating gas supplied through the pressure tube 40 is applied to the surface of the CO 2 absorbent in the nozzle body 22 through the nozzle hole 240 and the CO 2 absorbent in the form of droplets of CO 2 at a predetermined spray flow rate and pressure. It can be sprayed in a uniform distribution in the collection reactor 10, the pressure regulator 70, which is operated under the control of the control unit 60 controls the amount of pressure control gas supplied to the pressure tube (40).

That is, according to the control of the control unit 60 as the pressure control unit 70 and the pressure control unit 70, the internal pressure control of the receiving unit 220 according to the pressure control gas supplied to the receiving unit 220 through the pressure tube 40, the receiving unit 220 CO 2 absorbents filled at any height in the nozzle plate 24 are uniformly sprayed into the CO 2 collection reactor 10 at any flow rate and pressure in the form of atomized droplets through the nozzle holes 240 formed in the nozzle plate 24. It can be

As described above, the controller 60 determines a control value of the pressure regulator 70 from information provided by the droplet saturation sensor 50. And to control the pressure regulator 70 to the determined value to adjust the amount of pressure control gas supplied to the receiving portion (220). Accordingly, the CO 2 absorbent may be sprayed at a spray flow rate and a pressure at which the optimum trapping performance can be exhibited according to the flow rate or distribution of the mixed gas in the CO 2 trapping reactor 10.

The nozzle plate 24 is installed in the lower opening of the nozzle body 22. The nozzle plate 24 is provided with a plurality of nozzle holes 240 having the same size or different one or more of arrangement, shape, size, and number of the areas on the front surface. The size of the nozzle hole 240 formed in the nozzle plate 24 may vary depending on the cross-sectional area of the CO 2 capture reactor 10 in consideration of the mixed gas treatment capacity, but may preferably be 10 to 1000 μm.

6 to 7 illustrate various embodiments of the nozzle plate.

6 to 7, the nozzle plate 24 is a single structure (FIG. 6A) corresponding to the cross-sectional shape and size of the CO 2 capture reactor 10 or a plurality of unit nozzle plates having a fan shape ( 24a ~ 24d) may be a prefabricated structure configured to correspond to the cross-sectional shape and size of the CO2 capture reactor 10. In the case of the prefabricated structure, the nozzle body 22 may also be divided into a plurality of inner receiving portions 220 by partition partitions (not shown) installed therein.

The nozzle plate 24 may be configured in the form of a flat plate having the same exit direction of each nozzle hole 240 as shown in FIG. Alternatively, each nozzle hole formed in the nozzle plate 24 may be configured in the form of a convex plate in which the center is convex upward, as shown in FIG. 7B, or a concave plate in which the center illustrated in FIG. 7C is convex downward. The outlet direction of 240 may be configured to be different.

8 is a diagram illustrating a preferred arrangement of nozzle holes formed in the nozzle plate.

The nozzle hole 240 may be formed in the same size and shape throughout the nozzle plate 24, as shown in FIG. However, in this case, the spacing or arrangement between the nozzle holes 240 and the number (density) distribution for each location may be varied depending on the size, processing capacity, mixed gas injection amount, etc. of the CO2 capture reactor 10. Therefore, it is not limited to a specific interval, arrangement, or number (density) distribution by location.

It can be arranged that the droplets can be distributed in the CO2 capture reactor 10 with a space distribution and a size distribution that can maximize the collection performance of the gas to be treated (CO2), wherein the space distribution and the size distribution of the droplets are CO2 capture reactors. (10) In consideration of the cross-sectional distribution of the gas flow rate, it can be derived by analysis or iterative experiment through pre-simulation to have a distribution that can achieve the optimum collection efficiency.

The nozzle hole 240 may also be formed differently in size, shape, arrangement, etc. for each region, as illustrated in FIG. 8B. In this case, the nozzle holes 240 in the same area A1 may be formed in the same shape, size, arrangement, and number, and among the arrangement, shape, size, and number of nozzle holes 240 between the different areas A1 and A2. At least one or more may be formed in different forms from each other.

Of course, even in this case, the interval or arrangement, shape, size, and number (density) distribution between the nozzle holes 240 may vary depending on the device environment. Density) distribution is not limited. As long as the size distribution satisfies the monodistribution distribution with a geometric standard deviation of 1.2 or less, it is only necessary to construct the droplets.

According to the embodiment of the present invention described above, the liquid absorbent may be sprayed to have an optimal space-time distribution in the reactor in the form of droplets (droplet) of uniform size. In other words, by eliminating the non-uniformity of the droplet size having the greatest effect on the performance in the spray tower type capture technology through the absorbent spray nozzle unit, a significant performance improvement in CO2 treatment through the spray tower method can be expected.

In addition, by applying a baffle to the gas inlet while using a nozzle unit for injecting a liquid absorbent into the reactor in the form of droplets having a uniform size of a single stem, another main factor that greatly affects CO 2 capture performance is The nonuniformity of gas flow can be eliminated, and the overall collection performance of the apparatus can be improved.

In the detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

[Description of the code]

1: CO2 absorber 10: Reactor

12: mixed gas inlet 14: mixed gas outlet

16 absorbent outlet 20 CO2 absorbent spray nozzle

22: nozzle body 23: CO2 absorbent supply piping

24: nozzle plate 30: baffle

40: pressure tube 50: droplet saturation sensor

60: control unit 70: pressure regulator

100: reaction space 220: receiving part

240 nozzle hole

Claims

A nozzle for spraying a CO 2 absorbent inside the CO 2 capture reactor,

A nozzle body having a lower open tubular structure having a single CO 2 absorbent supply pipe connected to the upper portion thereof, and having any volume of the absorbent accommodating portion formed therein; And

And a nozzle plate installed in the lower opening of the nozzle body, the nozzle plate having a plurality of nozzle holes having the same size or different one or more of arrangement, shape, size, and number of areas in the entire area.

The pressure tube is connected to the other side of the upper part of the nozzle body, and the CO 2 absorbent filled to the receiving unit at an arbitrary height under the control of a pressure regulator connected to the pressure tube is formed in the form of droplets atomized through the nozzle hole. CO2 absorbent spray nozzle, characterized in that the spray in a uniform distribution in the collection reactor.
The method of claim 1,

CO2 absorbent spray nozzle, characterized in that the absorbent receiving portion in the nozzle body is partitioned through a partition partition.
The method of claim 1,

The nozzle plate is composed of a single structure corresponding to the cross-sectional shape and size of the CO 2 capture reactor or a combination of a plurality of unit nozzle plate in the form of an assembly structure adapted to correspond to the cross-sectional shape and size of the CO 2 capture reactor Spray nozzle.
The method of claim 3, wherein

CO2 absorbent spray nozzle, characterized in that the nozzle plate is configured in the form of a flat plate.
The method of claim 3, wherein

CO2 absorbent spray nozzle, characterized in that the nozzle plate is formed in the form of a convex plate or concave plate concave up or concave down the center is different from the exit direction of the nozzle hole.
The method of claim 1,

The shape and size of the nozzle hole in the same area of the nozzle plate is the same, and at least one or more of the arrangement, shape, size and number of nozzle holes are different between different areas.
The method of claim 1,

CO2 absorbent spray nozzle, characterized in that the pressure and the CO2 absorbent spray flow rate through the nozzle plate is controlled by the pressure control gas supplied to the receiving portion through the pressure tube by the control of the pressure regulator.
A spray tower type CO2 absorber that sprays a CO2 absorbent into a reactor in the form of droplets to absorb and recover CO2.

A CO2 capture reactor having a reaction space in which a mixed gas introduced through the lower mixed gas inlet is moved upwardly and a CO2 capture reaction is caused by a CO2 absorbent;

A CO2 absorbent spray nozzle according to any one of claims 1 to 8, installed at an upper end of the CO2 capture reactor and spraying a CO2 absorbent in a uniform distribution in the reaction space in the form of atomized droplets; And

A spray baffle installed in the CO2 capture reactor above the mixed gas inlet and having a plurality of slits or holes formed in the reaction space so that the mixed gas to be treated flows into a uniform velocity distribution; CO2 absorber of the type.
The method of claim 8,

An absorbent outlet is formed on the bottom side of the CO2 capture reactor, the mixture gas outlet is formed on the top of the CO2 capture reactor on one side or both sides of the CO2 absorbent spray nozzle opposite the absorber outlet.
The method of claim 8,

Spray tower type CO2 absorber characterized in that the same size of the slit (Slit) or hole (Hole) formed at an uneven interval.
The method of claim 8,

Spray baffle type CO2 absorber, characterized in that the baffles are formed with equally spaced slit (Slit) or holes (Hlit) of different sizes.
The method of claim 8,

Spray baffle type CO2 absorber, characterized in that the baffle is formed with a different slit (Slit) or hole (Hole) at different intervals.
The method of claim 8,

One or more droplet saturation sensors provided in the CO 2 collection reactor; And

And a controller for outputting a pressure control signal of the CO 2 absorbent spray nozzle from the droplet saturation information for each position provided by the droplet saturation sensor.

The control unit determines the control value of the pressure regulator from the droplet saturation information provided by the droplet saturation sensor, and by controlling the pressure regulator with the determined control value, the CO 2 absorbent spray flow rate and pressure through the CO 2 absorbent spray nozzle is controlled. CO2 absorption device of the spray tower method.