KR20100011877A - Device for removing air pollution - Google Patents

Abstract

The present invention relates to an air pollution removing device, and an object of the present invention is to solve the problems of the prior art described above, and to completely remove the air pollutants generated in the air pollutant discharge facility, and to use waste heat discarded. The purpose of the present invention is to provide an air pollutant removal device that can generate electricity and can reduce civil complaints or costs required when constructing a separate power plant. The air pollutant removal device according to the present invention for achieving the above object is an exhaust pipe connected to a facility for discharging high-temperature exhaust gas containing air pollutants, heat exchange is connected to the exhaust pipe and heat exchanged with the exhaust gas discharged And a first pollution removal unit for removing the pollutants contained in the exhaust gas discharged after passing through the heat exchanger, and a rear end of the primary pollution removal unit to suck and circulate the exhaust gas. A blower and a secondary decontamination unit for secondaryly removing the contaminants contained in the exhaust gas supplied from the blower, the exhaust pipe is provided with a generator having a thermoelectric element for generating electricity by the temperature difference.

Description

Air Pollutant Removal Device {DEVICE FOR REMOVING AIR POLLUTION}

The present invention relates to an air pollution removing device, and more particularly, to completely remove contaminants in air discharged from various machinery or factories, incinerators, etc., and to generate electricity using waste heat generated in the process. It relates to a decontamination apparatus.

In general, fuel-based facilities, such as industrial and transportation facilities, emit pollutants. Such pollutants include toxic gases such as sulfurous acid gas and carbon monoxide, and are substances causing air pollution.

Moreover, with the development of the industry, the use of factories, large buildings, thermal power plants, garbage incinerators, hospital waste incinerators, automobiles, etc. is increasing, and the deterioration of the global environment is aggravated by the air pollutants generated. It is working as a factor.

Accordingly, in recent years, attempts have been made to reduce the emission of air pollutants, but there are no complete solutions. In addition, a lot of heat is generated in facilities that emit air pollutants, and a plan for generating power using such heat has been proposed.

However, in the related art, a lot of costs have not yet been widely used for the construction of such a power generation facility, and in order to construct such a separate power generation facility, there is a problem in that it is not easy to process surrounding civil complaints and secure facility sites. Moreover, in recent years, fuel costs used for power generation have increased due to the increase in international oil prices, and thus technology development for generating electricity by using waste heat discarded is required. In addition, the conventional air pollutant removal device performs only a function of removing contaminants in the discharged material, there is a problem that there is no consideration of secondary environmental pollution generated by the discharge of hot air.

An object of the present invention is to solve the above-mentioned problems of the prior art, at the same time to remove the air pollutants generated in the air pollutant discharge facility, at the same time can generate electricity by using the waste heat discarded, separate power generation facilities It is to provide a device for removing air pollutants that can reduce civil complaints or costs.

The air pollutant removing apparatus according to the present invention for achieving the above object is an exhaust pipe connected to a facility for discharging high-temperature exhaust gas containing air pollutants, and the heat exchange with the exhaust gas is connected to the exhaust pipe and discharged The first heat exchanger, the first decontamination unit for removing the pollutants contained in the exhaust gas discharged after passing through the first heat exchanger, and the first end of the decontamination unit is installed at the rear end of the exhaust gas A generator having a suction and circulating blower, and a secondary decontamination unit for secondaryly removing contaminants contained in exhaust gas supplied from the blower, wherein the exhaust pipe includes a generator having a thermoelectric element that generates electricity by temperature difference. Is installed.

In addition, the generator includes a heat sink installed at both ends of the thermoelectric element, one end of the heat sink is in contact with the first heat exchanger to heat the thermoelectric element, the other end of the heat sink is a second heat exchanger for cooling Can be installed. In addition, the second heat exchanger may be air cooled or water cooled. In addition, the secondary decontamination unit is formed with an inlet and a drain for the supply and discharge of water, the tank is stored in the water maintaining a predetermined level therein, and connected to the exhaust pipe and extends into the water stored in the tank, the end And a connecting pipe for coupling the filter and the stopper for fixing the filter to discharge the exhaust gas into the water, and an exhaust port formed at an upper portion of the tank and discharging the gas from which the pollutant is removed by the water into the atmosphere. have. In addition, the tank and the first heat exchanger may include a pipe connected to circulate the water inside.

The air pollutant removal device according to the present invention configured as described above can effectively remove the air pollutants generated in the air pollutant discharge facility, and generate electricity using heat generated in the air pollutant discharge facility. As a result, it is possible to reduce the consumption of fuel by the conventional power generation method, and it is possible to economically and naturally friendly power generation without using surplus energy in the power generation process. In addition, the present invention can be simply installed in the existing air pollutant discharge facility installed to completely remove the air pollutant, it is possible to reduce the complaints or costs required in the construction of a separate power plant. In addition, the present invention has the advantage that the water contained in the pollutant is changed to clean water by removing the pollutant while the air pollutant removal process, the water can be recycled.

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

1 is a block diagram of an air pollutant removal apparatus according to the present invention.

Apparatus for removing air pollutants 10 according to the present invention, as shown in Figure 1, is installed in a facility that generates air pollutants, such as incinerators. In the embodiment of the present invention, an incinerator 1 for incineration of waste is used as an example of such a facility.

The incinerator 1 generates high temperature heat during the incineration of waste. An inlet is formed in the incinerator 1, and exhaust gas generated when the waste is incinerated is discharged through the outlet. In addition, the exhaust port is provided with an exhaust pipe 11 extending to the outside. The exhaust pipe 11 is installed to pass through the first heat exchanger 13, and is heat-exchanged with a low-temperature exhaust gas while passing through the first heat exchanger 13 through the exhaust pipe 11.

On the other hand, the first heat exchanger 13 may be made of air-cooled or water-cooled, heat exchange in the process of passing the high-temperature exhaust gas to the exhaust pipe.

On the other hand, when the first heat exchanger 13 is water-cooled, water in the first heat exchanger 13 may freeze when exposed to a cold environment when the incinerator 1 is not in use. (13) can be frozen. Therefore, a heater is installed inside the first heat exchanger 13 to prevent freezing of the first heat exchanger 13. In addition, the first heat exchanger 13 is provided with a water level sensor and a water supply means for maintaining a constant level of the stored water. Here, the water level sensor and the water supply means may be made of a ball top (ball top), the water supply means and the water supply means while the floating ball of the ball tower falls when the water level of the water stored in the first heat exchanger 13 falls below a certain level Open the pipe to allow water to be supplied. In addition, a valve device for draining the water stored therein may be installed below the first heat exchanger 13.

In addition, the first heat exchanger 13 may be provided with a control unit for controlling the operation of the heater and a temperature sensor for measuring the temperature inside the first heat exchanger 13. The controller measures the temperature of the water stored in the first heat exchanger 13 by the temperature sensor to operate the heater when the temperature drops below a predetermined temperature, and stops the operation of the heater when the temperature rises above a predetermined temperature. Let's do it.

In addition, the exhaust pipe 11 is provided with a generator 12 having a thermoelectric element 12a.

FIG. 2 is an enlarged perspective view of portion A of FIG. 1. Referring to FIG. 2, the generator 12 may be configured such that the thermoelectric element 12a is in direct contact with the exhaust pipe 11 and receives heat. Preferably, the generator 12 may be provided with heat sinks 12b and 13c at both ends of the thermoelectric element 12a to transmit heat through the heat sinks 12b and 13c.

That is, the heat sink 12b provided between the exhaust pipe 11 and the thermoelectric element 12a condenses heat from the exhaust pipe 11 and transfers the heat to the thermoelectric element 12a. The heat sink 12c provided between the thermoelectric element 12a and the second heat exchanger 12d for air or cooling cools the other end of the thermoelectric element 12a to low temperature. Preferably, the second heat exchanger for cooling may be installed at the other end of the heat sink 12c.

The thermoelectric element 12a is called a peltier element and is a semiconductor that directly converts electrical energy into thermal energy or converts thermal energy into electrical energy. The thermoelectric element 12a generates electricity by thermal energy delivered to the exhaust pipe 11.

In this case, as the temperature difference between both ends of the thermoelectric element 12a increases, the generation efficiency of electricity increases. That is, the thermoelectric element 12a generates electricity having a larger voltage as the temperature difference between the exhaust pipe 11 and the second heat exchanger 12d increases.

For example, the heat sink 12b provided between the exhaust pipe 11 and the thermoelectric element 12a is maintained at a temperature of 250 ° C. or higher, and is provided between the second heat exchanger 12d and the thermoelectric element 12a. The sink 12c is preferably maintained at a temperature below 20 ° C.

As such, the generator 12 generating electricity by using the temperature difference between the thermoelectric elements 12a may supply electricity to the electric device through an extension line. Preferably, the generator 12 is connected to the thermoelectric element 12a. It may be provided with a storage battery for storing the electricity generated by.

The second heat exchanger 12d may be water-cooled as shown in FIG. 2A, and the second heat exchanger 12d may be provided with a circulation pump for continuously circulating cooling water. In addition, as shown in FIG. 2B, the heat exchanger 12d ′ may be air cooled. To this end, the heat exchanger 12d 'may be formed to have a plurality of heat dissipation fins.

The exhaust pipe 11 is provided with a primary decontamination unit 14. The primary decontamination unit 14 may be a filter, and such a filter is installed in the exhaust pipe 11 and primarily removes contaminants such as fine dust contained in exhaust gas.

Preferably, the exhaust gas passing through the primary decontamination unit 14 has a low pressure, and thus, the primary decontamination unit may take a lot of load when the primary decontamination unit 14 passes. The blower 16 can be provided in the rear end of the (14). Here, the blower 16 sucks the exhaust gas in the exhaust pipe 11 through the primary decontamination unit 14 as the suction fan rotates to discharge the exhaust gas. Preferably, the blower 16 may be a turbo blower, a ring blower, or the like.

The exhaust gas discharged by the blower 16 flows into the secondary decontamination unit 18 to remove the contaminants secondaryly, and thus is purified by clean air and discharged into the atmosphere.

The secondary decontamination unit 18 is preferably configured in a manner using water.

3 is a perspective view of a secondary decontamination unit of the air pollutant removing apparatus according to the present invention, Figure 4 is a partial cutaway perspective view showing a secondary decontamination unit of the air pollutant removing apparatus according to the present invention.

3 and 4, the air pollutant removing apparatus 10 is provided with a blower 16 on an extension line of the exhaust pipe 11. An inlet pipe 182 is connected to the exhaust pipe 11, and the tank 181 of the secondary decontamination unit 18 passes air through which the pollutant is first removed by the filter through the inlet pipe 182. It is discharged inside.

Water is stored in the tank 181, and an end of the inlet pipe 182 is installed to be immersed in the stored water in the tank 181.

The end of the inlet pipe 182 is connected to the connection pipe 183 for discharging the water of the tank 181. In addition, an injection hole 187 may be formed in the upper portion of the tank 181 to replenish water therein. In addition, the lower portion of the tank 181 is provided with a drain port 184 for draining the water in the inside, the drain port 184 may be provided with a valve to open or lock the pipe to drain the water.

In addition, an upper portion of the tank 181 is provided with an exhaust port 188 through which water is discharged to discharge air from which contaminants are removed. Preferably, the exhaust port 188 may be provided with a lid 189 for blocking the inflow of the atmosphere when not in operation.

The inlet pipe 182 is for discharging the outside air into the water of the tank 181, the connection pipe 183 is for removing the foreign matter contained in the air discharged into the water of the tank 181 The difference filter unit 185 may be further installed. Here, the connection tube 183 may be formed of a plurality of branched tube, the secondary filter unit 185 may be installed in each branched tube.

5 is a perspective view showing a secondary filter unit of the air pollutant removing apparatus according to the present invention, Figure 6 is a perspective view showing a part of the secondary filter unit of the air pollutant removing apparatus according to the present invention.

5 and 6, the secondary filter part 185 includes a plurality of pipe parts 185a, and each pipe part 185a is coupled to the filter 186a and the pipe part 185a made of a porous network. And a stopper 186b to fix the filter 186a. A plurality of holes may be formed in the stopper 186b. In addition, in the embodiment of the present invention, each pipe portion 185a is composed of three, but the number is not limited.

Since the air passing through the secondary filter unit 185 in the inlet pipe 182 is lighter than water, the air is increased through the water, and the pollutants contained in the air are lowered while the temperature of the air discharged in this process is lowered. It is removed secondarily, which is then completely purged with clean air and discharged into the atmosphere.

In addition, the exhaust gas discharged from the incinerator 1 contains a large amount of moisture, and the moisture contained in the exhaust gas condenses in the course of passing water.

On the other hand, the secondary decontamination unit 18 may be provided with a level control device for maintaining a constant level of water stored therein.

The water level control device controls to supply insufficient water when the water stored therein falls below an appropriate range. In addition, the water level control device drains the water by opening the drain 184 provided in the tank 181 when the water stored in the tank 181 exceeds the appropriate level. The water level control device may be made of a floating switch such as a ball-top.

When the secondary decontamination unit 18 is exposed to a cold environment when the incinerator 1 is not in use, water in the first heat exchanger 13 may freeze, and thus, when the incinerator 1 is not in operation, A heater may be installed to prevent the water stored in the freezing.

In addition, the secondary decontamination unit 18 is provided with a temperature sensor for measuring the temperature of the water stored therein, a control unit for automatically controlling the operation of the heater is installed. The control unit senses the temperature of the water measured by the temperature sensor and controls the operation of the heater so that the temperature of the water is maintained above the appropriate temperature.

That is, the controller measures the temperature of the water stored in the secondary decontamination unit 18 by the temperature sensor to operate the heater when the temperature drops below a predetermined temperature, and when the temperature rises above a predetermined temperature, Stop operation.

In the embodiment of the present invention, the heater may be made of an electric heater using electricity, it is possible to operate the heater using the electricity stored in the battery. Meanwhile, a boiler facility may be installed in the secondary decontamination unit 18 as a means for replacing the heater.

More preferably, the secondary decontamination unit 18 may be connected to the first heat exchanger 13 through pipes 18a and 18b, and pumps may be installed in the pipes 18a and 18b to supply water. Can be made to circulate. Accordingly, water may be circulated between the secondary decontamination unit 18 and the first heat exchanger 13 by using the pipes 18a and 18b, and thus, in the first heat exchanger 13 Heated water may be supplied to the secondary decontamination unit 18 to prevent freezing and the like.

In addition, when the incinerator 1 is not operated, the boiler facility installed in the secondary decontamination unit 18 may be operated to heat water, thereby allowing the secondary decontamination unit 18 and the first heat exchange. The water stored in the group 13 can be prevented from freezing.

The water drained from the secondary decontamination unit 18 may be stored in the storage tank 20, and may be supplied to the water purification system 30 and used as water or heavy water.

On the other hand, the water stored in the storage tank 20 may be stored in a separate wastewater tank 40 and then treated with wastewater through a waste disposal company.

As described above, the apparatus for removing air pollutants according to the present invention has been described with reference to the illustrated drawings. However, the present invention is not limited to the embodiments and drawings described above, and the present invention belongs to the scope of the claims. Of course, various modifications and variations can be made by those skilled in the art.

In addition, in the embodiment of the present invention, the air pollutant removal device 10 is described as being connected to the incinerator 1, it is also possible to be used in connection with the facility for discharging other pollutants.

1 is a block diagram of an air pollutant removal apparatus according to the present invention.

FIG. 2 is an enlarged perspective view of portion A of FIG. 1; FIG.

3 is a perspective view of a secondary decontamination unit of the air pollutant removing apparatus according to the present invention.

Figure 4 is a partially cutaway perspective view showing a secondary decontamination unit of the air pollutant removal apparatus according to the present invention.

Figure 5 is a perspective view of the secondary filter unit of the air pollutant removing apparatus according to the present invention.

Figure 6 is a perspective view showing a part of the secondary filter unit of the air pollutant removing apparatus according to the present invention.

Claims (5)

An exhaust pipe connected to a facility for discharging high-temperature exhaust gas containing air pollutants, A first heat exchanger connected to the exhaust pipe and heat-exchanged with the exhaust gas discharged; A first decontamination unit for first removing contaminants contained in exhaust gas discharged after passing through the first heat exchanger; A blower installed at a rear end of the primary decontamination unit and configured to suck and circulate the exhaust gas; And a second decontamination unit for secondarily removing contaminants contained in the exhaust gas supplied from the blower, The exhaust pipe is removed air pollutant, characterized in that the generator having a thermoelectric element for generating electricity by the temperature difference. The method according to claim 1, The generator includes a heat sink installed at both ends of the thermoelectric element, wherein one end of the heat sink contacts the exhaust pipe to heat the thermoelectric element, and a second heat exchanger for cooling is installed at the other end of the heat sink. Air pollutant removal device. The method according to claim 2, The second heat exchanger is air pollutant removing apparatus, characterized in that made of air-cooled or water-cooled. The method according to any one of claims 1 to 3, The secondary decontamination unit is formed with an inlet and a drain for supplying and discharging water, the tank storing the water to maintain a predetermined level therein; A connecting pipe connected to the exhaust pipe and extending into the water stored in the tank, and having a filter and a stopper fixed to the end to discharge the exhaust gas into the water; Is formed on top of the tank, the air pollutant removing apparatus comprising an exhaust port for discharging the gas contaminants removed by water into the atmosphere. The method according to claim 4, Air pollutant removing apparatus comprising a pipe connected between the tank and the first heat exchanger for circulating water therein.

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