KR20200102862A - Apparatus for mineral carbonation with high density - Google Patents

Abstract

The present invention according to one embodiment relates to an apparatus for preparing sodium bicarbonate using a two-step reaction mode. The apparatus includes: a first reactor (100) to which aqueous sodium carbonate solution and carbon dioxide gas are introduced; a second reactor (200) to which a fluid discharged from the first reactor (100) is introduced; and a carbon dioxide microbubble generator (300) to which carbon dioxide gas and the fluid discharged from the second reactor (200) are introduced to form microbubbles in the introduced fluid and to supply the microbubbles to the second reactor (200). Particularly, the first reactor (100) includes a carbon dioxide macrobubble-forming unit for forming carbon dioxide macrobubbles and spraying the same to the aqueous sodium carbonate solution. In addition, the amount of carbon dioxide gas injected to the first reactor (100) is larger than the amount of carbon dioxide gas introduced to the second reactor (200). Further, the fluid discharged from the first reactor (100) includes aqueous sodium carbonate solution.

Description

Sodium bicarbonate production device using a two-stage reaction method {Apparatus for mineral carbonation with high density}

The present invention relates to an apparatus and method for producing carbonate mineralization using carbon dioxide contained in exhaust gas, and more particularly, to an apparatus for producing sodium bicarbonate using a two-stage reaction method.

Carbonate is usually prepared by reacting sodium (Na) or potassium (K) of alkali metals belonging to group 1 of the periodic table with CO ₂ gas to form a salt, and to precipitate or filter the salt. have.

A representative of these minerals being produced is sodium carbonate (NaCO ₃ ). For example, the production technology of sodium carbonate is Na6 by injecting CO ₂ gas into dissolved water in which Na+ is dissolved (hereinafter,'Na+ dissolved water').

There is a technology for preparing precipitated sodium carbonate (Precipitated Calcium Sodium) by crystallization and precipitation of CO ₃ .

Carbonate mineralization is a technology that uses CO ₂ , which is a major cause of global warming, while using chemical reactions that are well known and easy for a very long time. On the other hand, the carbonate mineralization technology has been converted from a technology that captures and stores CO ₂ (Carbon Capture and Storage: CCS) to a technology that utilizes CO ₂ (Carbon Capture and Utilization: CCU), and uses carbon dioxide gas. Research on carbonate mineralization is actively being conducted.

The problems of the prior art in the carbonate mineralization technology are as follows.

First, it is the decrease in the efficiency of the gas/liquid (hereinafter referred to as “gas/liquid”) reaction between CO ₂ gas and dissolved water of an alkali metal. The solubility of CO ₂ gas is 1.45 g/L, which has a very high solubility. On the other hand, in general, CO ₂ gas is injected into the solution in a large-scale reactor using a diffuser. However, for carbonic acid mineralization, the CO ₂ gas injected using a diffuser into the solution in the reactor must be supplied in excess of the amount required for carbonic acid mineralization (here, the required amount is calculated on a weight basis). . When the weight of the CO ₂ gas to be supplied is converted into a volume and supplied as a reaction solution for carbonic acid mineralization, the size of the CO ₂ gas supplied into the reaction solution becomes very large (coarse) and CO ₂ gas The residence time in the reactor is shortened, so that dissolution is difficult, and it is not reacted and is discharged to the outside of the reactor. In this case, 1) the reaction yield becomes very low, 2) the reaction takes a long time, and 3) the reactor becomes very large accordingly (Patent Document 1).

Second, in order to solve the above shortcomings, a technology that improves the dissolution efficiency of CO ₂ gas by jetting CO ₂ gas has been applied, and the dissolution efficiency is improved compared to the method in which this technology is injected through the diffuser method. As a result, the CO ₂ gas reaction efficiency is improved from 55% to 80%, but it is still not satisfactory (Patent Document 2).

Third, in most carbonate mineralization reactors using a conventional diffuser or jet stream, when there are many unreacted substances initially, the CO ₂ absorption rate and the reaction rate are fast and high, but when the reaction rate exceeds 80%, the reaction must occur for a long time. Since the reaction rate is high, the reaction completion time becomes very long in order to increase the reaction rate to 99%. Therefore, it has a disadvantage in that the productivity is very low and the manufacturing cost is high.

Fourth, because of such a late reactivity, techniques for reacting using CO ₂ microbubbles have been studied, but there is a disadvantage that economic efficiency due to high power is deteriorated as the pressure pump becomes excessively large to meet the conditions for generating microbubbles. . Therefore, the need for a highly efficient reaction technology capable of solving these disadvantages is raised (Patent Documents 3 and 4).

Patent Document 1: Korean Patent Registration No. 10-1571251 (announced on November 23, 2015) Patent Document 2: Korean Patent Registration No. 10-1709865 (announced on February 23, 2017) Patent Document 3: Korean Patent Registration No. 10-1221037 (announced on January 10, 2013) Patent Document 4: Korean Patent Registration No. 10-1590162 (announced on February 1, 2016)

According to an embodiment of the present invention, a large amount of CO ₂ is firstly supplied to the sodium carbonate aqueous solution using a nozzle so that gas-liquid contact is effectively achieved, thereby achieving a reaction yield of 70 to 80% in a short time, and secondary CO2 microbubbles. To provide a high-efficiency sodium bicarbonate production apparatus using a two-stage reaction method to prepare sodium bicarbonate by rapidly mixing and stirring bicarbonate ions (HCO ₃ ^-2 ) generated at a high concentration with the result of the first reaction using do.

According to an embodiment of the present invention, in the sodium bicarbonate production apparatus using a two-stage reaction method,

A first reactor 100 receiving an aqueous sodium carbonate solution and a carbon dioxide gas;

A second reactor 200 receiving the fluid flowing out of the first reactor 100; And

Including; a carbon dioxide microbubble generator 300 for receiving carbon dioxide gas and the fluid flowing out of the second reactor 200, generating microbubbles in the received fluid, and providing them to the second reactor 200,

The first reactor 100 includes a carbon dioxide macro bubble generating unit that generates carbon dioxide macro bubbles and injects it to the sodium carbonate aqueous solution, and the amount of carbon dioxide gas injected into the first reactor 100 is determined by the second reactor ( 200) is greater than the amount of carbon dioxide gas flowing into it,

An apparatus for producing sodium bicarbonate using a two-stage reaction method in which the fluid flowing out of the first reactor 100 includes an aqueous sodium carbonate solution is disclosed.

According to one or more embodiments of the present invention, the reaction yield can be improved to 99.99% by sequentially performing the first reaction and the second reaction. The first reaction is a reaction carried out under low-concentration CO2 dissolution conditions, and a large amount of CO2 gas is quickly supplied and the reaction yield is rapidly increased to 70~80% or more, and the second reaction is a microbubble generator as a result of the first reaction This is a step to increase the reaction yield to 99.99% in a short time by using. Here, the amount of CO2 gas consumption in the second reaction is relatively lower than that in the first reaction. According to an embodiment of the present invention, by dividing the optimized reaction conditions into two stages to match the reaction yield change proportional to the change in the concentration of bicarbonate ions in the reaction solution, the uniformity of mineralization prepared according to the present embodiment is very high. It is an economical technology that can effectively produce precipitated carbonates in a short time, thereby significantly lowering the production cost, and has the effect of improving production efficiency compared to investment cost and equipment size.

1 is a view for explaining an apparatus for producing sodium bicarbonate according to an embodiment of the present invention
2 is a diagram illustrating a macro bubble generating unit according to an exemplary embodiment.
3 and 4 are diagrams for explaining a macro bubble generating nozzle according to an embodiment.
5 is a view for explaining a carbon dioxide microbubble generating apparatus according to an embodiment.
6 is a view for explaining a turning machine according to an embodiment.

The above objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments related to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

In the present specification, when an element is referred to as being “above” (or “below”, “right”, or “left”) of another element, it is above (or below, right, or left) of another element. ), or a third component may be interposed between them. In addition, in the drawings, values such as length, width, and thickness of components are exaggerated for effective description of the technical content.

In the present specification, macrobubbles mean bubbles having an average diameter of 10 mm or more, and microbubbles mean bubbles having an average diameter of 100 μm or less.

In the present specification, the term'fluid' refers to at least one of the reactants required for the reaction for generating a sodium bicarbonate, intermediate products of the reaction for generating a sodium bicarbonate, a product (or product) of the reaction for generating a sodium bicarbonate, water, and a gas (eg, carbon dioxide gas). Refers to including one.

In the present specification, the term'fluid containing A'refers to reactants required for the reaction to produce a sodium bicarbonate, intermediate products of the reaction to produce a sodium bicarbonate, a product (or product) of the reaction to produce a sodium bicarbonate, water, and gas (e.g., carbon dioxide gas ) As a fluid containing at least one of, and means a fluid that must necessarily contain A (where A is the reactants required for the sodium bicarbonate production reaction, intermediate products of the sodium bicarbonate production reaction, the product (or product) of the sodium bicarbonate production reaction, and water , And a gas (eg, carbon dioxide gas), or may be another material.

In the present specification, that component A is located upstream of component B in the path or pipe through which the fluid flows means that the fluid flowing in the path or pipe first passes through component A and then passes through component B. I will use it as meaning.

In the present specification, the fact that component A is installed in the path or pipe through which the fluid flows means that component A controls the flow of such fluid (e.g., an action that blocks or permits the flow of fluid, controls the amount of fluid). It means that it is operatively coupled to the path or pipe so as to perform an operation to perform an operation, an operation to actively pump a fluid).

In this specification, the size of a number or symbol (subscript or superscript) attached to a chemical element or compound may often be described in the same size as other letters for convenience of description. For example, CO ₂ can also be described as CO ₂ .

In the present specification, when terms such as first and second are used to describe components, these components should not be limited by these terms. These terms are only used to distinguish one component from another component. The embodiments described and illustrated herein also include complementary embodiments thereof.

In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used in the specification, "comprise" and/or "comprising" does not exclude the presence or addition of one or more other components.

According to an embodiment of the present invention, the carbon dioxide gas present in the exhaust gas in the first reactor is supplied to a plurality of macro bubble generating nozzles capable of generating macro bubbles to forcibly form a gas-liquid contact with sodium carbonate aqueous solution as a reaction solution. The reaction yield is rapidly reacted to about 70 to 80%, and then the CO2 gas is micro-bubbled through a carbon dioxide micro-bubble generator in the second reactor and circulated into the second reactor to increase the gas/liquid reaction specific surface area. (HCO ₃ ^-2 ) is generated and the mineralization reaction proceeds through a rapid mixing/stirring device inside the reactors to complete the mineralization reaction in a short time, thereby minimizing the carbonate production time and minimizing the size of the reactor.

According to an embodiment of the present invention, carbon dioxide gas is micro-saturated and injected into the dissolved water in which sodium carbonate is dissolved, the fluid into which the carbon dioxide gas is injected is rotated to efficiently generate bicarbonate ion water, and the bicarbonate ion water is stirred to Let the mineralization reaction take place.

According to an embodiment of the present invention, the carbon dioxide gas contained in the exhaust gas in the dissolved water in which sodium carbonate is dissolved is supplied to the macro-bubble generating nozzles capable of generating macro-bubbles for vigorous mixing and reaction, and the CO2 gas is supplied. It can be micro-saturated and injected into the resultant of the mixing and reaction, and stirred at low energy to rapidly produce sodium bicarbonate.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, a number of specific contents have been prepared to explain the invention in more detail and to aid understanding. However, readers who have knowledge in this field to the extent that they can understand the present invention can recognize that it can be used without these various specific contents. In some cases, it is mentioned in advance that parts that are commonly known in describing the invention and are not largely related to the invention are not described in order to avoid confusion in describing the invention.

1 is a view for explaining an apparatus for producing sodium bicarbonate according to this embodiment of the present invention

Referring to FIG. 1, the sodium bicarbonate production apparatus according to the present embodiment includes a first reactor 100, a second reactor 200, a carbon dioxide microbubble generator 300, a sodium carbonate aqueous solution supply unit 400, and a powder. It may include an extraction device 500. These components are connected by one or more pipes that provide a space for the fluid to move, in which one or more devices, such as pumps or valves, forcibly moving the fluid or controlling the flow of the fluid are combined. . Meanwhile, the pipes, pumps, and valves illustrated in FIG. 1 are exemplary, and those skilled in the art may be configured to be modified and configured differently from the pipes, pumps, and valves illustrated in FIG.

The first reactor 100 may inject or receive an aqueous sodium carbonate solution and carbon dioxide (CO2) gas. According to this embodiment, the first reactor 100 includes a carbon dioxide macro bubble generating unit 110 that generates carbon dioxide macro bubbles and injects them to an aqueous sodium carbonate solution. The carbon dioxide macrobubble generation unit 110 will be described in detail later with reference to FIGS. 2 to 4.

A pipe L3 for supplying carbon dioxide gas is connected to the carbon dioxide macrobubble generating unit included in the first reactor 100. Meanwhile, the sodium bicarbonate production apparatus according to the present embodiment is a gas that is connected to a facility (eg, a stack) that discharges exhaust gas containing carbon dioxide gas to the outside or other facilities to receive at least a portion of the exhaust gas. Further comprising an inlet pipe (L1), the pipe (L1) is branched into two pipes (L3, L4). A device such as a blower P2 is installed in the carbon dioxide gas inlet pipe L1 in order to actively introduce the exhaust gas discharged to the outside or other facilities into the carbon dioxide gas inlet pipe L1. According to this embodiment, the blower P2 is located upstream of the branch point where the two pipes L3 and L4 branch.

Part of the exhaust gas introduced through the carbon dioxide gas inlet pipe (L1) is supplied to the carbon dioxide macro bubble generating unit 110 through the carbon dioxide gas first supply pipe (L3) (hereinafter referred to as the'first supply pipe (L3)'). And, the rest of the exhaust gas introduced through the carbon dioxide gas inlet pipe (L1) through the carbon dioxide gas second supply pipe (L4) (hereinafter referred to as'second supply opening (L4)') through the carbon dioxide microbubble generator 300 ).

In the sodium bicarbonate production apparatus according to the present embodiment, the amount of carbon dioxide gas injected into the first reactor 100 is greater than the amount of carbon dioxide gas introduced into the second reactor 200. For example, the amount of carbon dioxide gas injected into the first reactor 100 may be four or more times greater than the amount of carbon dioxide gas introduced into the second reactor 200.

As a method for making the amount of carbon dioxide gas injected into the first reactor 100 greater than the amount of carbon dioxide gas flowing into the second reactor 200, carbon dioxide gas flowing into the second supply pipe L4 The pressure load applied to the first supply pipe (L3) may be designed to be smaller than the pressure load applied to the carbon dioxide gas flowing into the first supply pipe (L3). For example, those skilled in the art, the diameter of the pipes (L3, L4) or devices connected to the downstream of the pipes (L3, L4) (for example, reactors (100, 200), microbubble generator (300)) , The specification of the carbon dioxide macrobubble generating unit 110 may be designed to satisfy the pressure load design condition above.

Meanwhile, in the present specification, since carbon dioxide is included in the exhaust gas, the terms "exhaust gas" and "carbon dioxide gas" will be used as the same meaning unless there is practical benefit to distinguish. That is, that the first reactor 100 (or the second reactor 200) receives the exhaust gas and the carbon dioxide gas are used in the same technical meaning, and sodium bicarbonate production according to this embodiment The flow of exhaust gas (or inflow, discharge, supply) through the pipes included in the device and the movement of carbon dioxide (or inflow, discharge, supply) through the pipes included in the device are technically used interchangeably.

In this embodiment, the first supply pipe (L3) is again branched into two pipes (L16, L17), respectively, and connected to the macro bubble generating unit (110). When the macro bubble generating unit 110 is configured to be stacked in multiple layers (for example, two layers) as in this embodiment, the first supply pipe L3 is divided into two pipes L16 and L17, It may be configured to provide carbon dioxide gas to each layer of the bubble generating unit 110. On the other hand, when the macro bubble generating unit is composed of only one layer instead of multiple layers, the first supply pipe L3 may be configured to directly provide carbon dioxide gas to the macro bubble generating unit without branching.

The first reactor 100 also receives a sodium carbonate aqueous solution from the sodium carbonate aqueous solution supply unit 400.

The first reactor 100 may include a reaction vessel 101 capable of accommodating an aqueous sodium carbonate solution and a carbon dioxide macrobubble generation unit 110, and the first reactor 100 may include sodium carbonate through a pipe L11. An aqueous sodium carbonate solution may be provided from the aqueous solution supply unit 400, and the provided aqueous sodium carbonate solution is stored in the reaction vessel 101. The sodium carbonate aqueous solution stored in the reaction vessel 101 is mixed with the carbon dioxide macrobubbles generated by the carbon dioxide macrobubble generation unit 110, and is used in the following reaction (hereinafter, “sodium carbonate generation reaction”).

Na ₂ CO ₃ + CO ₂ + H ₂ O → ₂ NaHCO ₃

Although not shown in the drawings, the first reactor 100 is configured under conditions in which the sodium bicarbonate generation reaction can occur. For example, since the reaction for generating the sodium bicarbonate may be performed within an appropriate temperature range, devices such as a heater (not shown) for maintaining the temperature for the reaction for generating the sodium bicarbonate may be attached to the first reactor 100. .

The second reactor 200 may include a reaction vessel 201 and a stirring device 210 installed inside the reaction vessel 201. Here, the stirring device 210 includes a rotation shaft 212 disposed vertically and rotated by a driving motor 211 and an impeller 213 attached to the rotation shaft 212.

The reaction vessel 201 receives an inlet (not shown) through which the fluid flowing out of the first reactor 100 is introduced and a fluid containing carbon dioxide microbubbles generated by the carbon dioxide microbubble generator 300 is introduced. An inlet (not shown), an outlet (not shown) through which the fluid stored in the reaction vessel 201 can be discharged to the carbon dioxide microbubble generator 300, and the gas generated in the reaction vessel 201 to the outside. It has an outlet (not shown) through which it can flow out, and has a cylindrical shape that provides a space in which a fluid and carbon dioxide microbubbles introduced from the primary reactor 100 are mixed and reacted.

Meanwhile, the gas generated in the first reactor 100 and the gas generated in the second reactor 200 may be discharged to merge with the exhaust gas discharged to the outside. To this end, pipes L10 and L12 may be connected to the first reactor 100.

The sodium bicarbonate production apparatus according to the present embodiment further includes a pipe L5 providing a path for introducing a fluid flowing out of the first reactor 100 into the second reactor 200, and the pipe L5 ) May be provided with a pump P1 for pumping the fluid flowing out of the first reactor 100 to the second reactor 200.

Also in the reaction vessel 201, the sodium carbonate aqueous solution provided from the first reactor 100 is mixed with the carbon dioxide microbubbles generated by the carbon dioxide microbubble generator 300, and the above'sodium carbonate generation reaction' is performed.

The carbon dioxide microbubble generator 300 is a fluid stored in the second reactor 200 from the second reactor 200-reactants for the reaction for producing sodium bicarbonate, intermediate products for the reaction for producing sodium bicarbonate, At least a portion of the product, including at least one of water, and gas, is introduced, and microbubbles containing carbon dioxide are generated in the fluid, and provided to the second reactor 200. For the purpose of explanation, a fluid containing microbubbles containing carbon dioxide is often referred to as a'fluid containing carbon dioxide'.

The carbon dioxide microbubble generator 300 and the second reactor 200 provide a path through which at least a portion of the fluid stored in the second reactor 200 can be moved to the carbon dioxide microbubble generator 300. The carbon dioxide microbubble generator 300 and the second reactor 200 are connected by a pipe L9, and the carbon dioxide-containing fluid generated by the carbon dioxide microbubble generator 300 is transferred to the second reactor 200. It is connected by pipes (L6, L7) providing a path through which it can be moved.

In this embodiment, the pipe (L6) is branched into two pipes (L7, L8), of which the pipe (L7) is a carbon dioxide-containing fluid generated in the carbon dioxide microbubble generator 300 is the second reactor ( It provides a path that can be moved to 200, and the pipe (L8) is connected to the powder extraction device 500 for extracting the powder. The pipe L8 is provided with a valve V1 and a blower P2 capable of controlling the flow of the fluid moving through the pipe L8.

According to this embodiment, when sufficient sodium bicarbonate (i.e., sodium bicarbonate) is generated in the carbon dioxide-containing fluid provided from the carbon dioxide microbubble generator 300 to the second reactor 200, the valve V1 is opened. At least a portion of the fluid moving through the pipe L6 is provided to the powder extraction device 500. Until sufficient sodium bicarbonate (i.e., sodium bicarbonate) is generated in the carbon dioxide-containing fluid provided from the carbon dioxide microbubble generator 300 to the second reactor 200, the valve V1 is configured to allow the fluid to flow through the pipe L8. It is closed to prevent flow. On the other hand, a valve V2 that can control the flow of fluid in the pipe L7 may be installed, and when the valve V1 is open, the valve V2 is closed, and the valve V1 is closed. In this case, the valve V2 may be configured to open.

The powder extraction device 500 is for extracting the sodium chloride in the form of a powder from the sodium chloride in the aqueous solution state, for example, a centrifuge that rotates the aqueous solution and a device such as a heater that receives and vaporizes an aqueous solution having a high powder concentration from the centrifuge. The sodium bicarbonate powder can be extracted using.

On the other hand, in this embodiment, the aqueous solution flowing out of the powder extraction device 500 may be configured to be fed back to the first reactor 100 or the second reactor 200 or the microbubble generator 300.

The sodium carbonate aqueous solution supply unit 400 is a device that receives sodium carbonate and water to generate an aqueous sodium carbonate solution. The sodium carbonate aqueous solution supply unit 400 may include a stirring device (drawing number not assigned) and a container 401 for storing the sodium carbonate aqueous solution for smooth generation of the sodium carbonate aqueous solution. The container 401 storing the aqueous sodium carbonate solution and the first reactor 100 are connected through a pipe L11, and the aqueous sodium carbonate solution stored in the container 401 through the pipe L11 is the first reactor 100 Is provided to.

2 is a diagram illustrating a macro bubble generating unit according to an exemplary embodiment.

Referring to FIG. 2, the macro bubble generating unit 110 includes a plurality of macro bubble generating nozzles ( Carbon dioxide gas supply providing a path for supplying carbon dioxide gas to N1, N2, N3, N4, N5, N6, N7) and a plurality of macro bubble generating nozzles (N1, N2, N3, N4, N5, N6, N7) It may include a line (L20).

In the carbon dioxide gas supply line L20, a plurality of macro bubble generating nozzles N1, N2, N3, N4, N5, N6, and N7 are coupled to each other while being spaced apart from each other, but carbon dioxide supplied by the carbon dioxide gas supply line L20 The gas is combined to be injected through a plurality of macro bubble generating nozzles N1, N2, N3, N4, N5, N6, and N7.

The carbon dioxide gas provided through the pipe L16 flows through the carbon dioxide gas supply line L2 after flowing into the carbon dioxide gas supply line L20, and then flows through the plurality of macro bubble generating nozzles N1, N2, N3, N4, It is injected in the form of macro bubbles through N5, N6, N7).

The plurality of macro bubble generating nozzles N1, N2, N3, N4, N5, N6, and N7 may have the same or similar structure, and hereinafter, referring to FIGS. 3 and 4, the macro bubble generating nozzle N1 ) Will be described in detail.

The macro bubbles generated by the macro bubble generating unit described above are bubbles having an average diameter of 1 mm to 2 mm (1 mm or more and 2 mm or less).

3 and 4 are diagrams for explaining a macro bubble generating nozzle according to an embodiment.

Referring to these drawings, the macro bubble generating nozzle N-1 according to an embodiment has a configuration installed in a form of being immersed in an aqueous sodium carbonate solution stored in the first reactor 100 (see FIG. 1 ).

The macro bubble generating nozzle N-1 according to an embodiment receives carbon dioxide gas through the pipe L16, and also sucks the sodium carbonate aqueous solution around it N-1 without a separate power device, Macrobubbles containing gas are generated and sprayed together with the inhaled aqueous sodium carbonate solution into the aqueous sodium carbonate solution stored in the reaction vessel 101.

The macro bubble generating nozzle (N-1) according to an embodiment is generated as a rotational flow by a rotational flow generation unit (N-10) and a rotational flow generation unit (N-10) for generating rotational flow by receiving carbon dioxide gas. A macro bubble injection part (N1-30) that generates carbon dioxide macro bubbles in the sodium carbonate aqueous solution by introducing a part of the carbon dioxide gas and sodium carbonate aqueous solution, and a rotating flow generation part (N-10) and a macro bubble injection part (N1-30) It may include a connection portion (N1-20) for connecting the spaced apart. Here, the sodium carbonate aqueous solution flowing into the macro bubble injection unit N1-30 is naturally introduced without a separate power device, so that the rotational flow generation unit N-10, the macro bubble injection unit N1-30, and the connection unit N1 -20) are organically connected and configured with each other.

As will be described later, the macro bubble generating nozzle N-1 is a sodium carbonate aqueous solution stored in the reaction vessel 101 through a space where the rotational flow generating unit N-10 and the macro bubble spraying unit N1-30 are separated. It is configured to naturally and powerfully flow into the macro bubble injection part (N1-30).

The rotational flow generation unit (N-10) is composed of a tube (N1-11) shape having two ends (N1-12, N-13), and one of the two ends (N1-12, N-13) (N1-12) (hereinafter,'inlet') is coupled with the pipe (L-20) so that carbon dioxide flowing through the pipe (L-20) flows into the inlet (N1-12), and the other end (N-13) (Hereinafter, the'exit') is a free end and is spaced apart from and coupled to the macrobubble spraying portion N1-30 by the connection portion N1-20. The inside of the pipe (N1-11) has a space (N1-S1) through which carbon dioxide gas can move, and in such a space (N1-S1), a structure (S) that allows the carbon dioxide gas introduced through the inlet (N1-12) to rotate. ) Is formed. The structure W for turning the fluid may have a configuration such as a vane described in Korean Patent Laid-Open Patent 2012-0008106 (2012.01.30) (hereinafter, 106'). The contents described in Korean Patent Application Publication No. 106' are combined as part of the specification of the present application. On the other hand, the vane described in No. 106' is illustrative and can be used as the structure W in this embodiment if it has a function capable of turning a fluid even in a structure other than that of the other structure.

The inner space of the rotational flow generation unit N-10 becomes smaller in diameter (that is, the diameter of the inner space) as it approaches the outlet N1-13 from the position where the structure W is installed. Carbon dioxide gas rotated by the structure (W) is strongly discharged through the outlet (N1-13), and the discharged carbon dioxide gas flows directly into the macro bubble injection unit (N1-30) through the separation space (N1-S2). do.

The macro bubble injection unit (N1-30) and the rotational flow generation unit (N1-10) are separated by a space (N1-S2), and the separation space (N1-S2) is very short, so the rotational flow generation unit (N1-10) ), most of the carbon dioxide gas flowing out through the outlet (N1-12) is strongly introduced into the macro bubble injection unit (N1-30) while maintaining rotation.

On the other hand, by the flow of carbon dioxide gas strongly introduced into the macro bubble injection unit N1-30, the sodium carbonate aqueous solution around the macro bubble generating nozzle N-1 passes through the spaced space N1-S2, It flows into the macro bubble injection part N1-30 together with carbon dioxide gas.

The macro bubble injection part (N1-30) is composed of a tube (N1-31) shape having two ends (N1-33, N1-32), and one of the two ends (N1-33, N1-32) (N1-33) (hereinafter,'inlet') is configured to receive most of the carbon dioxide gas that has flowed out through the outlet (N1-12) of the rotational flow generation unit (N1-10). On the other hand, the other end (N1-32) (hereinafter,'outlet') of the two ends (N1-33, N1-32) is configured to inject carbon dioxide gas and an aqueous sodium carbonate solution. Contained macrobubbles are formed.

The inner space of the macro bubble injection unit N1-30 is configured in the shape of a tube (N1-31), and the carbon dioxide gas and sodium carbonate aqueous solution introduced in a rotating state into the inner space of the tube (N1-31) are mixed with each other, Collision, and the dissolved fluid is sprayed to the outlet (N1-32) while rotating.

Meanwhile, the configuration of the above-described macro bubble generating nozzle N1 may be the same as any one or more of the other macro bubble generating nozzles N2, N3, N3, N4, N5, N6, and N7.

5 is a view for explaining a carbon dioxide microbubble generating apparatus according to an embodiment.

Referring to FIG. 5, the carbon dioxide microbubble generator 300 according to an exemplary embodiment may be configured to include at least one slewing device and at least one reactor. In the present embodiment, a description will be made of a microbubble generating device 300 composed of three swirlers 311, 312, 313 and three reactors 321, 322, 323. On the other hand, in the present invention, although it is preferable that each of the swirlers and the reactor is at least two, those skilled in the art will readily understand that the scope of the present invention is not limited to the number of such swirlers and reactors.

The carbon dioxide microbubble generator 300 includes a turning machine 311 (hereinafter,'first turning machine'), turning machine 312 (hereinafter,'second turning machine'), and turning machine 313 (hereinafter, ' 3rd turning machine'), melting tank 321 (hereinafter,'first melting tank'), melting tank 322 (hereinafter'second melting tank'), and melting tank 323 (hereinafter,'second melting tank') 3 Melting tank'). These swingers and the dissolution tank may have the same or similar structure, and the configuration of the swinger will be described later with reference to FIG. 6. The dissolution tank has a configuration having a closed space for storing fluid, and the dissolution tank includes an inlet through which fluid can be introduced from the outside and an outlet through which the stored fluid can be discharged to the outside.

The pipe (L4) is branched into three pipes (L41, L42, L43), and the carbon dioxide gas supplied through the pipes (L41, L42, L43) is the first turning machine 311, the second turning machine 312, And the third turning machine 313 respectively divided and sequentially supplied.

The fluid flowing out of the second reactor 200-including at least one of reactants for the reaction for generating a sodium bicarbonate, intermediate products for the reaction for generating a sodium bicarbonate, products for the reaction for generating a sodium bicarbonate, water, and a gas-is a pipe L41 After being joined with the carbon dioxide gas supplied through ), it is introduced into the first turning machine 311. The fluid introduced into the first turning machine 311 is mixed and rotated with each other and then introduced into the first melting tank 321. The first melting tank 321 has a cylindrical shape with an empty inside, and a small and medium-sized reaction may be performed by the fluid and carbon dioxide gas introduced into the first melting tank 321.

The fluid stored in the first melting tank 321 flows out and merges with the carbon dioxide gas supplied through the pipe L42 and then supplied to the second turning machine 312. The fluid introduced into the second turning machine 312 is mixed and rotated with each other and then introduced into the second melting tank 322. The second melting tank 322 has a cylindrical shape with an empty inside, and a small and medium-sized reaction may be performed by the fluid and carbon dioxide gas introduced into the second melting tank 322.

The fluid stored in the second melting tank 321 flows out and merges with the carbon dioxide gas supplied through the pipe L43 and then supplied to the third turning machine 313. The fluid introduced into the third turning machine 313 is mixed and rotated with each other and then introduced into the third melting tank 323. The third melting tank 323 has a hollow cylindrical shape, and a small and medium-sized generation reaction may proceed by the fluid and carbon dioxide gas introduced into the third melting tank 323.

On the other hand, the fluid stored in the third melting tank 323 and the residual carbon dioxide gas that has not been used for the reaction for generating the sodium bicarbonate are merged with the exhaust gas or transferred to the powder extraction device 500 via the pipe L6.

As described above, in the carbon dioxide microbubble generator 300 according to the present embodiment, a plurality of dissolution tanks are provided, and carbon dioxide gas is sequentially supplied to the dissolution tanks so that carbon dioxide gas can be efficiently used in the sodium bicarbonate generation reaction. do.

As described above, the fine bubbles generated by the carbon dioxide microbubble generator 300 are bubbles having an average diameter of 50 μm or less.

6 is a view for explaining a turning machine according to an embodiment.

6, the swinger 311 according to an embodiment has a cylindrical configuration in which partition walls P1 and P2 that can move to rotate the fluid are formed therein, and such a swinger 311 is It is composed of physical components such as partition walls (P1, P2) to rotate the fluid flowing into the.

An inlet H1 through which fluid can be introduced and an outlet H2 through which fluid can be discharged are formed in the swing unit 311. As described above, a mixture of the fluid provided through the pipe L9 and the carbon dioxide gas provided through the pipe L41 flows into the inlet H1. Korean Patent Registration No. 1284266 (2013.07.01) (hereinafter referred to as 266') describes in detail an exemplary configuration and operation of a turning machine. The technical contents of the turning machine (swivel unit) described in the 266' patent are combined as part of the specification of the present application.

Meanwhile, the swingers 312 and 313 may have the same or similar configuration as the above-described swinger 311.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited to the above embodiments. Those of ordinary skill in the art to which the present invention pertains will understand that various modifications and variations are possible from the above description. Therefore, the scope of the present invention is limited to the described embodiments and should not be defined, but should be defined by the claims to be described later as well as equivalents to the claims.

100: first reactor
200: second reactor
300: carbon dioxide microbubble generator
400: sodium carbonate aqueous solution supply unit
500: powder extraction device

Claims (7)

In the sodium bicarbonate production apparatus using a two-stage reaction method,
A first reactor 100 receiving an aqueous sodium carbonate solution and a carbon dioxide gas;
Including; a carbon dioxide microbubble generator 300 for receiving carbon dioxide gas and a fluid and generating microbubbles in the received fluid,
The first reactor 100 comprises a carbon dioxide macro bubble generating unit that generates carbon dioxide macro bubbles and injects it to the sodium carbonate aqueous solution. Sodium bicarbonate production apparatus using a two-stage reaction method. The method of claim 1,
The second reactor 200 receiving the fluid flowing out of the first reactor 100; further includes,
The fluid into which the carbon dioxide microbubble generator 300 flows in is the fluid that flows out from the second reactor 200, and the carbon dioxide microbubble generator 300 generates microbubbles in the introduced fluid to the second reactor ( 200),
An apparatus for producing sodium bicarbonate using a two-stage reaction method, wherein the amount of carbon dioxide gas injected into the first reactor 100 is greater than the amount of carbon dioxide gas introduced into the second reactor 200. The method of claim 2,
An apparatus for producing sodium bicarbonate using a two-stage reaction method, wherein the amount of carbon dioxide gas injected into the first reactor 100 is more than four times greater than the amount of carbon dioxide gas introduced into the second reactor 200. The method of claim 2,
The average diameter of the carbon dioxide macrobubbles is 1 mm to 2 mm,
The average diameter of the carbon dioxide microbubbles is 50㎛ or less, sodium bicarbonate production apparatus using a two-stage reaction method. The method according to claim 1 or 2,
The macro bubble generating unit
A plurality of macro bubble generating nozzles;
Includes; a carbon dioxide gas supply line (L20) providing a path for supplying carbon dioxide gas to the plurality of macro bubble generating nozzles,
In the carbon dioxide gas supply line (L20), the plurality of macro bubble generating nozzles are separated from each other and coupled to each other, but the carbon dioxide gas flowing along the carbon dioxide gas supply line (L20) is combined to be sprayed through the plurality of macro bubble generating nozzles. Phosphorus, sodium bicarbonate production apparatus using a two-stage reaction method. The method according to claim 1 or 2,
At least one of the plurality of macro-bubble generating nozzles (N1) is a rotating flow generating unit (N-10) and a rotating flow generating unit (N-10) for generating a rotating flow by receiving carbon dioxide gas A macrobubble injection unit (N1-30) for generating carbon dioxide macro bubbles in the sodium carbonate aqueous solution by receiving carbon dioxide gas generated as a rotating flow and a part of the aqueous sodium carbonate solution introduced into the first reactor 100, rotating flow It includes a connection unit (N1-20) for spacedly connecting the generation unit (N-10) and the macrobubble injection unit (N1-30), and the rotational flow generation unit (N-10) and the macrobubble injection unit (N1- 30) The sodium bicarbonate production apparatus using a two-stage reaction method that a part of the sodium carbonate aqueous solution is introduced into the macrobubble spraying unit (N1-30) through the spaced apart. The method of claim 2,
The second reactor 200 includes a reaction vessel 201 and a stirring device 210 installed inside the reaction vessel 201, and the stirring device 210 is disposed vertically and is attached to the drive motor 211. It includes a rotating shaft 212 and an impeller 213 attached to the rotating shaft 212 rotated by,
The reaction vessel 201 includes an inlet through which the fluid flowing out of the first reactor 100 can be introduced, an inlet through which the carbon dioxide micro-bubbles generated by the carbon dioxide micro-bubble generator 300 can be introduced, and the gas to the outside. An apparatus for producing sodium bicarbonate using a two-stage reaction method having an outlet through which it can be discharged, and having a space for mixing the fluid received from the first reactor 100 with the carbon dioxide microbubbles and preventing it from flowing out to the outside. .

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