KR20160090192A - Apparatus for reducing noxious gas - Google Patents

Abstract

According to an embodiment of the present invention, provided is an apparatus for reducing noxious gas. According to an embodiment of the present invention, the apparatus for reducing noxious gas may comprise: a separation film mounted in a suction pipe of a combustion engine to reduce oxygen concentration of air sucked into the combustion engine, wherein a penetration ratio of an oxygen molecule and a nitrogen molecule is different.

Description

[0001] Apparatus for reducing noxious gas [0002]

The present invention relates to a harmful gas abatement apparatus, and more particularly, to a harmful gas abatement apparatus capable of reducing the generation of nitrogen oxides, which are noxious gases contained in exhaust gas of a combustion engine.

As the perception of the environment gradually increases, regulations on various harmful gases contained in the exhaust gas of the combustion engine become strict. Particularly, as nitrogen oxides (NOx) among the harmful substances contained in the exhaust gas are perceived as a main cause of air pollution, various regulations for reducing the amount of nitrogen oxides discharged from combustion engines have been strengthened.

In order to reduce nitrogen oxides in combustion engines, it is most effective to lower the combustion temperature. Accordingly, various combustion engines include an exhaust gas recirculation system that lowers the combustion temperature by injecting a part of the exhaust gas back into the intake pipe. The exhaust gas recirculation device mixes some of the already exhausted exhaust gas into the intake air and injects it into the combustion chamber again to reduce the oxygen concentration inside the combustion chamber, thereby preventing the burning temperature from rising sharply. However, the exhaust gas recirculation system requires a separate device for removing sulfur oxides (SOx) and various particulate substances contained in the exhaust gas, thereby complicating the apparatus and consuming chemicals for neutralizing the sulfur oxides, There was a problem.

Korean Registered Patent No. 10-0915346 2009. 08. 27

An object of the present invention is to provide a noxious gas reduction device capable of reducing the generation of nitrogen oxides, which are noxious gases contained in exhaust gas of a combustion engine.

The technical objects of the present invention are not limited to the above-mentioned technical problems, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a harmful gas abatement apparatus for reducing the oxygen concentration of air sucked into the combustion engine by being mounted on an intake pipe of a combustion engine, .

The permeability of the nitrogen molecules is higher than the permeability of the oxygen molecules and is disposed on a path of air movement within the intake pipe so that air introduced into the intake pipe can be sucked into the combustion engine through the separation membrane .

The intake pipe may be divided into a first region in which the interior of the intake pipe is connected to the combustion engine and a second region in which outside air is inhaled, and the first region may have a lower pressure than the second region.

The permeability of the oxygen molecules in the separation membrane is higher than the permeability of nitrogen molecules and can be arranged to contact the air flowing in the intake pipe toward the combustion engine.

The separation membrane may divide a region into a first region communicating with the interior of the intake pipe and a second region opposite to the first region, and the first region may have a higher pressure than the second region.

And a housing surrounding the outer surface of the separation membrane and forming the second region between the separation membrane and the separation membrane.

And a pressure regulator connected to the housing to regulate the pressure of the second region.

The pressure regulator may further include a suction pump for sucking the gas in the second region to reduce the pressure in the second region.

The pressure regulator may adjust the pressure of the second region according to the oxygen concentration of the air sucked into the combustion engine.

The pressure regulator may regulate the pressure of the second region according to the temperature of the combustion engine or the temperature of the exhaust gas of the combustion engine.

The separation membrane may be disposed alongside the extending direction of the intake pipe.

The separation membrane is formed at the center of the movement path of the air to form a hollow structure.

The separation membrane may be a porous membrane whose permeation rate of oxygen molecules is faster than the permeation rate of nitrogen molecules.

The separation membrane may be a solution-diffusion membrane in which oxygen molecules dissolve at the surface of the membrane, diffuse the membrane, and desorb from the opposite surface of the membrane.

The separation membrane may be an ion transport membrane in which oxygen molecules are adsorbed on the surface of the membrane, dissociated, and moved in the oxygen ion state to the oxygen molecule on the opposite side of the membrane.

Wherein the separation membrane is divided into a first region communicating with the interior of the intake pipe and a second region opposite to the first region, the first region having a higher temperature and pressure than the second region, have.

And a pressurizing unit that pressurizes air into the intake pipe to provide compression heat to the separator.

The pressurizing unit can be driven by the pressure of the exhaust gas discharged from the combustion engine.

And a heating unit for heating at least one of the air or the separation membrane in the intake pipe.

The heating unit may include a heating wire inserted into the intake pipe.

The heating unit may provide heat of the exhaust gas discharged from the combustion engine to air in the intake pipe or to the separation membrane.

The heating unit is capable of exchanging heat between the exhaust gas and air inside the intake pipe.

And a pressure unit connected to the intake pipe to supply compressed air to the separation membrane.

The pressurizing unit can be driven by the pressure of the exhaust gas discharged from the combustion engine.

And an oxygen sensor inserted into the intake pipe to measure the concentration of oxygen gas.

And a humidifying unit connected to the intake pipe to humidify the intake pipe.

The humidifying unit may include a porous membrane that absorbs water and naturally evaporates water inside the intake pipe.

The humidifying unit may inject water molecules into the intake pipe.

The humidifying unit may further include a water vapor generating unit for generating water vapor and a pumping unit for injecting the water vapor into the intake pipe.

The humidifying unit may be formed integrally with the separating membrane unit including the separating membrane.

According to another aspect of the present invention, there is provided a power generating apparatus including a combustion engine, an air intake unit installed in an intake tube of the combustion engine, And a separation membrane unit for reducing the oxygen concentration of the separation membrane unit.

The permeability of the nitrogen molecule is higher than the permeability of the oxygen molecule and is disposed on the movement path of the air inside the intake pipe so that air introduced into the intake pipe can be sucked into the combustion engine through the separation membrane have.

The permeability of the oxygen molecules in the separation membrane is higher than the permeability of nitrogen molecules and can be arranged to contact the air flowing in the intake pipe toward the combustion engine.

The separation membrane may be a porous membrane whose permeation rate of oxygen molecules is faster than the permeation rate of nitrogen molecules.

The separation membrane may be a solution-diffusion membrane in which oxygen molecules dissolve at the surface of the membrane, diffuse the membrane, and desorb from the opposite surface of the membrane.

The separation membrane may be an ion transport membrane in which oxygen molecules are adsorbed on the surface of the membrane, dissociated, and moved in the oxygen ion state to the oxygen molecule on the opposite side of the membrane.

Further comprising a supercharging unit that is driven by a pressure of exhaust gas of the combustion engine to supercharge the air to the intake tube, and the separation membrane unit may be installed between the supercharging unit and the combustion engine.

And a supercharging unit installed between the separation membrane and the combustion engine and driven by a pressure of the exhaust gas of the combustion engine to supercharge the air to the intake tube.

Further comprising a first supercharging unit and a second supercharging unit which are driven by the pressure of the exhaust gas of the combustion engine to supercharge the air to the intake pipe and are connected in series or parallel to each other, And at least one of the combustion engine, the second supercharging unit, and the combustion engine.

Wherein the first supercharging unit and the second supercharging unit are connected in parallel to each other and connect a first intake pipe connected to the first supercharger unit and a second intake pipe connected to the second supercharger unit, And a blower unit for blowing air.

Wherein the intake pipe includes a first pipe and a second pipe connected in parallel to each other, wherein the first pipe passes the sucked air as it is, and the second pipe passes through the air having reduced oxygen concentration .

According to the present invention, it is possible to remarkably reduce the nitrogen oxide contained in the exhaust gas in a relatively simple apparatus configuration, and to simplify the control by the relatively simple structure of the apparatus, the cost for operation and maintenance is relatively small, The removal effect is remarkable.

In addition, the power generating apparatus of the present invention does not use toxic chemicals during operation and has the advantage that no by-products such as sludge are generated.

Further, the power generating device of the present invention does not require a post-treatment device as in the other nitrogen oxide removing devices, and does not cause clogging of the separation membrane.

1 is a view schematically showing a power generating apparatus according to a first embodiment of the present invention.
2 is a view schematically showing a power generating apparatus according to a second embodiment of the present invention.
3 is a cross-sectional view of the noxious gas reduction device included in the power generation device of Fig.
FIG. 4 is a view for explaining an exemplary operation process of the noxious gas reduction apparatus of FIG. 3; FIG.
5 is a view schematically showing a power generator according to a third embodiment of the present invention.
6 is a cross-sectional view of the noxious gas reduction device included in the power generation device of Fig.
7 is a view schematically showing a power generator according to a fourth embodiment of the present invention.
8 is a cross-sectional view of the noxious gas reduction device included in the power generation device of Fig.
9 is a modified embodiment of the noxious gas reduction apparatus of Fig.
10 is a view schematically showing a power generator according to a fifth embodiment of the present invention.
11 is a view schematically showing a power generator according to a sixth embodiment of the present invention.
12 is a cross-sectional view of a humidifying unit included in the power generating apparatus of Fig.
13 is a modified embodiment of the humidifying unit of Fig.
14 is another modified embodiment of the humidification unit of Fig.
15 to 19 are views showing power generating devices of various structures to which the harmful gas reduction device of the present invention is applied.
20 is a cross-sectional view of a harmful gas reduction device having a structure in which a separation membrane unit and a humidification unit included in the power generation apparatus according to the present invention are combined.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the power generating apparatus according to the first embodiment of the present invention will be described in detail with reference to FIG. 1 is a view schematically showing a power generating apparatus according to a first embodiment of the present invention.

The power generation device 1a according to the first embodiment of the present invention is a device for providing power to various devices such as a ship, an automobile, an aircraft, a generator, etc., and is a device for generating power by burning air and fuel, And a combustion engine (10). In order to reduce the harmful gas generated during the operation of the combustion engine 10, the power generation device 1a is provided with a harmful gas reduction device.

The power generating device 1a according to the first embodiment of the present invention includes a combustion engine 10 in which an intake pipe 20 for intake of air and an exhaust pipe 30 for exhausting exhaust gas are connected to each other. The combustion engine 10 is a device for generating mechanical energy by burning a fuel, and is a device for generating internal combustion engines such as a gas turbine, a steam engine, a steam turbine, etc., as well as an internal combustion engine such as a gasoline engine, a diesel engine, External combustion engines and other heat engines. In the present invention, any structure can be applied to the combustion engine 10 as a prime mover that generates power by burning fuel.

The combustion engine 10 mixes and combusts the air sucked through the intake pipe 20 to obtain power, and exhaust gas generated in the combustion process is discharged to the outside. The exhaust gas discharged from the combustion engine 10 contains various noxious gases such as nitrogen oxides (NOx) and sulfur oxides (SOx). In order to reduce various kinds of noxious gas contained in such exhaust gas, the power generation device 1a includes a noxious gas reduction device.

The noxious gas reduction device includes a separation membrane unit (40a) for reducing nitrogen oxides in the noxious gas contained in the exhaust gas. The separation membrane unit 40a is installed in the intake pipe 20 to reduce the concentration of oxygen contained in the air flowing into the intake pipe 20. [

The amount of nitrogen oxides is remarkably increased when the combustion temperature is high. Therefore, in order to lower the combustion temperature of the combustion engine 10, it is necessary to reduce the concentration of oxygen contained in the air flowing into the intake pipe 20.

The separation membrane unit 40a reduces the oxygen concentration of the air sucked into the combustion engine 10 by using the separation membrane 41a. The separation membrane 41a refers to a membrane capable of selectively transmitting oxygen molecules and nitrogen molecules with different permeabilities of oxygen molecules and nitrogen molecules. In the present invention, the separation membrane 41a is not limited to a membrane capable of completely separating oxygen molecules and nitrogen molecules, and it is possible to control the concentration of oxygen contained in the air by controlling the permeability of oxygen molecules and nitrogen molecules Any gas separation membrane can be used. The separation membrane 41a may be installed directly in the intake pipe 20 or may be installed in the intake pipe 20 through a separate separation membrane unit 40a.

The separation membrane 41a included in the power generation device 1a according to the first embodiment of the present invention has a characteristic that the permeability of nitrogen molecules is higher than that of oxygen molecules. The separation membrane 41a may be divided into a first region A1 and a second region A2 by dividing the intake pipe 20 in the lateral direction. The first region A1 and the second region A2 are formed on both sides of the separation membrane 41a and the first region A1 is connected to the combustion engine 10 and the second region A2 A2) can be divided into an area where the outside air is sucked.

At this time, the first region A1 is set to a lower pressure than the second region A2 so that air introduced into the intake pipe 20 flows into the first region A1 through the separation membrane 41a in the second region A2, . The permeability of the nitrogen molecules is higher than that of the oxygen molecules, and the separation membrane 41a has an effect of blocking a part of oxygen molecules in the air introduced through the intake pipe 20. [ That is, the oxygen concentration contained in the air present in the first region A1 is lower than the oxygen concentration in the air present in the second region A2 due to the difference in the permeation amount of nitrogen molecules and oxygen molecules passing through the separation membrane 41a Concentration.

Hereinafter, the power generating apparatus according to the second embodiment of the present invention will be described in detail with reference to FIG. 2 to FIG.

3 is a cross-sectional view of a noxious gas reduction device included in the power generation device of Fig. 2, Fig. 4 is a schematic diagram of a harmful gas generating device of Fig. 3, 1 is a view for explaining an exemplary operation of the gas abatement apparatus.

The power generation device 1b according to the second embodiment of the present invention includes a combustion engine 10 to which an intake pipe 20 and an exhaust pipe 30 are connected and a noxious gas reduction device connected to the intake pipe 20. [ The noxious gas reduction device includes a separation membrane unit 40b and a pressurization unit 50 that supplies compressed air to the separation membrane unit 40b.

The separation membrane unit 40b is connected to the intake pipe 20 and includes a separation membrane 41b having different permeabilities of oxygen molecules and nitrogen molecules. The separation membrane unit 40b includes a housing 42 in which an internal space communicates with the intake pipe 20 and a separation membrane 41b disposed inside the housing 42. [ The housing 42 can be divided into the first area A1 and the second area A2 with the separating film 41b therebetween. The first region A1 and the second region A2 are separated from each other with the separator 41b interposed therebetween and have a separate housing 42 structure provided in the intake pipe 20 as shown in FIG. It may be a partial area of the intake pipe 20. [

The housing 42 may extend from the intake pipe 20 and have a cylindrical shape larger in diameter than the intake pipe 20. A plurality of such housings 42 may be connected in parallel or in series. The intake pipe 20 is provided with an intake filter (not shown), and air is sucked into the separation membrane unit 40b through the intake filter.

The separation membrane 41b is inserted into the housing 42 to divide the area of the housing 42 into a first area A1 and a second area A2. The first region A1 is a region communicating with the interior of the intake pipe 20 and the second region A2 is a surface opposite to the first region A1. The permeability of oxygen molecules is higher than the permeability of nitrogen molecules in the separation membrane 41b. The separation membrane 41b is arranged to be in contact with the air flowing inside the intake pipe 20.

The separation membrane 41b may be disposed in parallel with the extending direction of the intake pipe 20 and may have a hollow structure in which a path of air is formed at the center. That is, the air passing through the intake pipe 20 has a structure in which a part of oxygen contained in the air is discharged through the separation membrane 41b by contacting the separation membrane 41b while passing through the center of the separation membrane 41b. The separation membrane 41b may be a hollow tube formed of a tube bundle and inserted into the housing 42. The separation membrane 41b may be a porous membrane having a structure in which the permeation rate of oxygen molecules is faster than the permeation rate of nitrogen molecules. A gas is a gas that has a small volume of molecules but is more likely to escape the membrane more easily. Depending on the membrane structure, a gas with a larger volume of molecules can escape at a higher rate. The oxygen enrichment membrane can increase the oxygen concentration by using the characteristic that the permeation rate of oxygen molecules is faster than the permeation rate of nitrogen molecules. Therefore, by using the oxygen-enriched membrane, more oxygen molecules can be removed from the interior of the intake pipe 20, and the oxygen concentration of air sucked into the combustion engine 10 can be reduced. Such a porous oxygen-enriched membrane may be a polymer membrane such as a silicon phenol resin copolymerized membrane or a silicon-based polymer including fluorine.

On the other hand, the separation membrane 41b may be a solution-diffusion membrane in which oxygen molecules are adsorbed on the surface of the membrane and dissociated to diffuse inside the membrane and to move away from the opposite surface of the membrane. The dissolution diffusion film may be a non-porous film.

The separation membrane 41b can separate the oxygen molecules contained in the air by the pressure difference. That is, the first region A1 can maintain the pressure higher than the second region A2 and move the oxygen molecules contained in the air in the first region A1 to the second region A2.

The pressurizing unit 50 serves to increase the pressure of the first region A1 by injecting compressed air into the intake tube 20. [ The pressurizing unit 50 compresses air with a kind of blower to increase the pressure in the first region A1. The pressurizing unit 50 may be driven by a separate power source or may be a supercharger using the pressure of the exhaust gas of the combustion engine 10. [

The separation efficiency of oxygen molecules may be varied in the separation membrane 41b depending on the difference in pressure between the first region A1 and the second region A2. Accordingly, the housing 42 may include a pressure regulating portion capable of regulating the pressure of the second region A2. The pressure regulator may actively or passively regulate the pressure in the second zone A2 and may include a pressure regulating pipe 43 as shown in Figure 3 or a pressure regulating valve 44 as shown in Figure 4 . The pressure regulating pipe 43 has a structure capable of regulating the diameter to maintain a predetermined pressure. The pressure regulating valve 44 can regulate the pressure of the second region A2 through adjustment of the valve.

Referring to FIG. 4, the noxious gas reduction device can actively regulate the oxygen concentration in the air. The separation membrane 41b can control the permeability of oxygen according to the difference in pressure between the first region A1 and the second region A2. Therefore, the oxygen sensor 60 is installed in the intake pipe 20 to measure the oxygen concentration in real time, and the pressurizing unit 50 and the pressure regulating valve 44 are actively adjusted according to the measured value, Can be adjusted appropriately. That is, the pressurizing unit 50 can actively regulate the pressure in the first region A1 and the pressure regulating valve 44 can actively regulate the pressure in the second region A2. This process can be controlled in real time via the control unit 70. [

Hereinafter, the power generating apparatus according to the third embodiment of the present invention will be described in detail with reference to Figs. 5 and 6. Fig.

FIG. 5 is a schematic view of a power generation device according to a third embodiment of the present invention, and FIG. 6 is a sectional view of a noxious gas reduction device included in the power generation device of FIG.

The power generation device 1c according to the third embodiment of the present invention adjusts the oxygen concentration of the air sucked into the combustion engine 10 by using the suction pump 45 connected to the separation membrane unit 40c.

The separation membrane unit 40c includes a separation membrane 41b therein and is divided into a first region A1 and a second region A2 by a separation membrane 41b as described in the second embodiment. The suction pump 45 is connected to the housing to forcibly suck the air in the second area A2 and discharge it to the outside. This suction pump 45 can reduce the pressure in the second region A2 and actively generate the pressure difference between the first region A1 and the second region A2. Therefore, by using the suction pump 45, the amount of oxygen molecules removed through the separation membrane 41b can be controlled.

Such a suction pump 45 can be actively adjusted according to the temperature inside the combustion engine 10, the exhaust temperature, the oxygen concentration of the intake pipe 20, and the like.

In the case where a separate pressurizing unit is not provided in the power generating device, the air inside the intake pipe can only be sucked into the combustion engine 10, and a pressure difference can not be generated in the separator to reduce the amount of oxygen. In this case, the suction pump 45 generates a pressure difference between the first region A1 and the second region A2, which are both ends of the separation membrane 41b, and thus the amount of oxygen in the intake pipe 20 can be reduced. That is, when the supercharger is not provided as in the combustion engine 10 of the natural intake type, the suction pump 45 can reduce the oxygen concentration in the intake pipe 20.

Hereinafter, the power generating apparatus according to the fourth embodiment of the present invention will be described in detail with reference to FIGS. 7 and 9. FIG. FIG. 7 is a schematic view of a power generation device according to a fourth embodiment of the present invention, and FIG. 8 is a sectional view of a noxious gas reduction device included in the power generation device of FIG.

The power generation device 1d according to the fourth embodiment of the present invention includes a supercharging unit 100 for supercharging air to the intake pipe 20. [ The supercharging unit 100 can supply the high-pressure and high-temperature air to the separation membrane unit 40d to separate oxygen through the separation membrane 41d.

The supercharging unit 100 is an apparatus for increasing the amount of air supplied through the intake pipe 20 and includes a turbocharger driven by the pressure of the exhaust gas of the combustion engine 10, Or a supercharger that uses the power of the combustion engine 10 directly or uses a separate power source may be used.

The supercharging unit 100 compresses air and supplies the compressed air to the intake pipe 20. The pressure and the temperature inside the intake pipe 20 can be increased by the compressed air.

The separation membrane unit 40d has a separation membrane 41d therein and the separation membrane 41d divides the inside of the separation membrane unit 41d into a first area A1 and a second area A2. The structural shape of the separation membrane unit 40d is substantially the same as that of the second embodiment or the third embodiment, and thus a detailed description thereof will be omitted.

However, an ion transport membrane may be used in which the oxygen molecules are adsorbed on the surface of the membrane, dissociated, moved inside the membrane in an oxygen ion state, and then released to oxygen molecules on the opposite side of the membrane. The ion conductive separator is characterized in that oxygen molecules are ionized and pass through the membrane. Such an ion conductive separator can separate oxygen by electrochemical potential difference with a catalyst under high temperature (for example, 550 to 700 ° C) and high pressure.

The separation membrane unit 40d may be installed in the intake pipe 20 between the supercharging unit 100 and the combustion engine 10 so that the air supplied to the separation membrane 41d maintains high temperature and high pressure conditions. When the supercharging unit 100 compresses the air and supplies the compressed air to the intake pipe 20, the temperature of the air increases as the pressure increases and the compression heat is generated. Therefore, the air supplied to the separation membrane unit 40d can maintain high temperature and high pressure, and it is possible to make a condition that oxygen can be ionized and permeated through the separation membrane 41d. Meanwhile, the separation membrane unit 40d may be provided with a pressure control pipe 43 or a pressure control valve (not shown) to adjust the pressure of the second region A2.

An intercooler 110 is provided between the separation membrane unit 40d and the combustion engine 10 to cool the air sucked into the combustion engine 10. [ That is, the air is pressurized through the supercharging unit 100 to pressurize the separation membrane unit 40d with the required temperature and pressure, and the temperature can be adjusted to a temperature suitable for the combustion engine 10 using the intercooler 110 again.

9 is a modified embodiment of the noxious gas reduction apparatus of Fig.

The noxious gas reduction apparatus shown in Fig. 9 includes a heating unit 80 capable of directly heating the air inside the intake pipe 20. [ The heating unit 80 heats the air supplied to the separation membrane unit 40d to a high temperature to facilitate the movement of oxygen through the separation membrane 41d. The heating unit 40d may be in the form of an electric heating wire, inserted into the intake pipe 20, or inserted into the separator unit 40d. The heating unit 80 may be limited to the form of a heating wire or the mounting position is not limited. That is, the heating unit 80 may directly heat the separation membrane 41d or may heat the entire separation membrane unit 40d outside the separation membrane unit 40d.

Hereinafter, the power generating apparatus according to the fifth embodiment of the present invention will be described in detail with reference to FIG. 10 is a view schematically showing a power generator according to a fifth embodiment of the present invention.

The power generation device 1e according to the fifth embodiment of the present invention is different from the power generation device 1e in that the heating unit is a structure that can increase the air temperature inside the intake pipe 20 by using the heat of the exhaust gas of the combustion engine 10 The remaining components are substantially the same as the power generating apparatus described in the fourth embodiment.

The power generating device 1e includes a heat exchanger 120 that can transfer the heat of exhaust of the exhaust pipe 30 to the intake pipe 20. The heat exchanger 120 can receive the exhaust gas from the exhaust pipe 30 and transfer heat to the intake pipe 20 to increase the temperature of the air inside the intake pipe 20. [

The supercharging unit 100 can supply the high-pressure and high-temperature air to the intake pipe 20 in the process of compressing the air. However, when the compressed air is difficult to reach the necessary temperature or the air pressure is excessively high, ). ≪ / RTI > The heat exchanger 120 may be used together with or separately from the supercharging unit 100. On the other hand, the heat exchanger 120 is preferably installed between the supercharging unit 100 and the separator unit 40d.

Hereinafter, the power generating apparatus according to the sixth embodiment of the present invention will be described in detail with reference to Figs. 11 to 14. Fig. Fig. 11 is a view schematically showing a power generating apparatus according to a sixth embodiment of the present invention, Fig. 12 is a sectional view of a humidifying unit included in the power generating apparatus of Fig. 11, Fig. 14 is a modified embodiment, and Fig. 14 is another modified embodiment of the humidifying unit of Fig.

The power generation device 1f according to the sixth embodiment of the present invention includes a humidifying unit 90a for increasing the humidity inside the intake pipe 20. [ The humidifying unit 90a increases the amount of moisture in the intake pipe 20 and suppresses an increase in the combustion temperature of the combustion engine 10.

The humidifying unit 90a may be installed in the intake pipe 20 between the separation membrane unit 40 and the combustion engine 10 and humidified by air passing through the separation membrane unit 40 to be supplied to the combustion engine 10 .

The humidifying unit 90a can use the porous membrane 91 absorbing water as shown in Fig. The porous membrane (91) absorbs water, and water can be naturally vaporized easily according to the humidity of the air inside the intake pipe (20). The humidifying unit 90a includes a porous membrane 91 in contact with water W and can receive water W from the water tank 94 through a pipe 95 separately. The water W may be supplied using gravity or a capillary phenomenon, or may be supplied by using a pump 93.

13, the humidification unit 90a can inject water directly into the chamber 92b by using the nozzle 96 in the humidification unit 90a. As shown in FIG. 14, The water vapor can be generated through the separate steam generating unit and injected into the intake pipe 20. The water vapor generating unit can atomize the water W using the ultrasonic vibrator 98 in the vessel 97 (see FIG. 14), or boil water in the vessel to generate water vapor. In the present specification, the term "water vapor" refers not only to a complete gas state of water, but also includes a state in which liquid water is atomized to form small particles. Accordingly, the water vapor generated through the water vapor generating unit may include not only the gas of water but also water in a very small liquid state. The water vapor generated through the water vapor generating unit can be injected into the chamber 90c through the pumping unit 93 at a high pressure.

 The chambers 92a, 92b, and 92c may have an expanded structure than the intake pipe 20, provide a space for uniformly mixing air and water particles, and prevent condensed water from flowing into the combustion engine 10 can do. A plurality of such chambers 92a, 92b, 92c may be connected in parallel or in series to form a module.

Hereinafter, with reference to Figs. 15 to 19, a power generation device having various structures to which the harmful gas reduction device is applied will be described. 15 to 19 are views showing power generating devices of various structures to which the harmful gas reduction device of the present invention is applied

Referring to Fig. 15, the power generator 1g has a structure in which the separator unit 40 is installed between the supercharging unit 100 and the combustion engine 10. The intake pipe 20 includes a first pipe 21 and a second pipe 22 connected in parallel to each other. The first pipe passes the sucked air as it is and the second pipe 22 passes through the separation membrane unit (40) is installed to allow air having a reduced oxygen concentration to pass therethrough.

The first pipe 21 and the second pipe 22 can be selectively opened and closed as needed and the amount of opening of the first pipe 21 and the second pipe 22 can be adjusted and supplied to the combustion engine 10 It is possible to more precisely control the oxygen concentration contained in the air. The first tube 21 and the second tube 22 can be selectively opened and closed as necessary to control the use or nonuse of the separation membrane unit 40. For example, when the power generator 1g passes through an area that does not regulate the exhaust gas, the outside air is directly used through the first pipe 21, and when the power generator 1g passes through an area where the exhaust gas regulation is strict, The air having the reduced oxygen concentration can be supplied to the intake pipe 20 through the intake pipe 22.

Referring to Fig. 16, the first power unit 100a and the second power unit 100b are connected in parallel to each other in the power generator 1h. Further, the separation membrane unit 40 is installed before the first supercharging unit 100a passes. That is, the power generator 1h has a structure in which the oxygen concentration of the air supplied to the intake pipe 20 is reduced and the combustion engine 10 is supercharged through the supercharging unit.

At this time, the intake pipe 20 in which the separation membrane unit 40 is installed is branched into a first pipe 21 and a second pipe 22 connected in parallel to each other, and the separation membrane unit 40 is connected to the second pipe 22 ). In this case, the power generation device 1h may further include a pressure unit or a suction pump of the above-described type in order to improve the oxygen removing capability of the separation membrane unit 40. [

In FIG. 16, the first and second superchargers 100a and 100b are connected in parallel to each other. However, the first and second superchargers 100a and 100b may be connected in series.

17, the power generator 1i is connected between a first intake pipe 20a connected to the first supercharging unit 100a and a second intake pipe 20b connected to the second supercharging unit 100b And a blower unit 130 for forcedly flowing air. The blower unit 130 can freely flow air between the first intake pipe 20a and the second intake pipe 20b and can supply various kinds of air with controlled oxygen concentration according to the load of the combustion engine 10. [ have. The air passing through the first and second supercharging units 100a and 100b is cooled by passing through the first intercooler 110a and the second intercooler 110b, The condensed water is removed through the condensate filter 120b and supplied to the combustion engine 10. [

18, the power generation apparatus 1i includes a first supercharging unit 100a and a second supercharging unit 100b, and the separating membrane unit 40 includes a first intake pipe 20a and a second intake pipe 20b. The intake tubes 20b may be provided respectively, or the intake tubes 20 may be installed as shown in Fig.

20 is a cross-sectional view of a harmful gas reduction device having a structure in which a separation membrane unit and a humidification unit included in the power generation apparatus according to the present invention are combined.

As shown in Fig. 20, the separation membrane unit 40 and the humidification unit 90 may be combined with each other to form a single unit structure.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j, 1k:
10: Combustion engine
20: intake pipe
30: Exhaust pipe
40, 40a, 40b, 40c, 40d: separator unit
41a, 41c and 41d:
50: pressure unit
60: Oxygen sensor
70:
80: Heating unit
90a, 90b, 90c: Humidification unit
100: Supercharging unit
110: intercooler

Claims (9)

Wherein the permeability of the oxygen molecule and the nitrogen molecule is different, and the separation membrane is attached to the intake pipe of the combustion engine and reduces the oxygen concentration of air sucked into the combustion engine. The noxious gas reduction apparatus according to claim 1, further comprising a pressure unit connected to the intake pipe to supply compressed air to the separation membrane. 3. The noxious gas reduction device according to claim 2, wherein the pressure unit is driven by a pressure of exhaust gas discharged from the combustion engine. The noxious gas reduction device according to claim 1, further comprising an oxygen sensor inserted into the intake pipe to measure the concentration of oxygen gas. The harmful gas reduction device according to claim 1, further comprising a humidifying unit connected to the intake pipe to humidify the intake pipe. The harmful gas reduction device according to claim 5, wherein the humidifying unit includes a porous membrane that absorbs water and naturally evaporates water inside the intake pipe. 6. The harmful gas reduction device according to claim 5, wherein the humidifying unit injects water molecules into the intake pipe. 6. The noxious gas reduction device according to claim 5, wherein the humidifying unit further comprises a water vapor generating unit for generating water vapor, and a pumping unit for injecting the water vapor into the intake pipe. The harmful gas reduction device according to claim 5, wherein the humidifying unit is formed integrally with a separation membrane unit including the separation membrane.

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