KR100761014B1 - One body-type waste gas purufier - Google Patents

Abstract

An integrated apparatus for purifying exhaust gas, which can remove acidic gases such as HCl, SO2, HF, H2S, etc., nitrogen oxides such as NO, NO2, etc., dioxin, and fine dust that are harmful substances contained in exhaust gas of an incinerator, is provided. An integrated apparatus for purifying exhaust gas comprises: a housing-shaped body(10) which is divided into a central room(CR) and both side rooms(SR1,SR2) by a pair of left and right partitions(11,12) of a filtering and dust collecting machine; a compressed air supply unit(20) for supplying compressed air; a slaked lime slurry supply pump(30) for supplying a slaked lime slurry; a semi-dry type reaction part(40) having a gas distributing unit(45) and the air floating type micro-droplet spray unit installed therein, and an uniform gas dispersing unit(43) installed on a rear end part thereof; an activated carbon supply blower(50) connected to an exhaust gas inflow port(41) of the semi-dry type reaction part; an air floating type micro-droplet spray unit(60) which is installed in an upper part of the semi-dry type reaction part to spray the slurry in a micro-droplet state into the semi-dry type reaction part by receiving compressed air and slaked lime slurry; a filtration unit(70) including at least a plurality of filter part bodies(71) arranged on the pair of left and right partitions of the filtering and dust collecting machine to filter fine dust and dioxin in exhaust gas; a reaction liquid supply unit(80) for supplying urea water or ammonia water as a reaction liquid into exhaust gas flowing through the both side rooms of the body; and divided space forming members(90) which are installed within the both side rooms respectively, and have a turbulent flow generating member inflow part(91), a turbulent flow generating member(92), a catalyst unit(93), and an exhaust part.

Description

Integrated exhaust gas purifier {ONE BODY-TYPE WASTE GAS PURUFIER}

1 is a cross-sectional view showing the internal configuration of the integrated exhaust gas purification apparatus according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: main body

11,12: filter dust collector left and right partition plate

CR: center compartment

SR1, SR2: Both sides compartment

15: Hopper

20: compressed air supply means

30: slaked lime slurry supply pump

40: semi-dry reaction unit

41: exhaust gas inlet

42: after semi-dry reaction part

43 gas equal distribution means

45: gas distribution means

45a: Directly below gas distribution means

45b: lateral gas distribution means

50: activated carbon supply blower

60: air floating fine droplet injection means

70: filtering means

71: filter unit body

80: reaction liquid supply means

81: reaction liquid supply pump

82: reaction liquid spray nozzle

90: partition space forming member

91: turbulence generating member inlet

92: turbulence generating member

93 catalyst means

94: exhaust gas outlet

S3: compartment space

The present invention relates to an integrated exhaust gas purification device, and more particularly, to acidic gases (HCl, SO ₂ , HF, H ₂ S, etc.) and nitrogen oxides (NO, NO ₂ ) which are harmful components in the exhaust gas discharged from an incinerator. And the like, and an integrated exhaust gas purifying apparatus capable of removing dioxin and fine dust.

Generally, emissions from combustion of incinerators, power plants and other industrial facilities include acid gases (HCl, SO ₂ , HF, H ₂ S, etc.), nitrogen oxides (NO, NO _2, etc.) and dioxin and particulate contaminants. Etc. are included. As described above, various methods and apparatuses for removing harmful substances contained in the exhaust gas have already been presented. As an example, the integrated exhaust gas of Korean Patent Registration No. 10-478609, which is the prior art of the present applicant, is disclosed. There is a discharge device. The prior art, the air subcultured microdroplet injection device is connected to the compressed air supply device and the slaked lime slurry supply pump at the top, cylindrical semi-dry reaction unit having a particulate detection sensor on one side of the inner peripheral surface; The semi-dry reaction unit is integrally connected and installed at the left and right sides, and at the upper and lower ends thereof, a clean gas outlet and a hazardous material outlet are respectively formed, and are separated and formed on both sides based on the hazardous material outlet, respectively. A bag filter housing having a filter; A centrifugal dust collector communicating with and installed in the internal space of the semi-dry reaction unit; And a controller (not shown) connected to the particulate detection sensor, the compressed air supply device, and the slaked lime slurry supply pump to electrically control the fine droplet injection device.

According to the prior art configured as described above, by integrating the centrifugal dust collector, the semi-dry reactor and the bag filter housing, the size of the incineration plant can be greatly reduced, the installation area can be minimized, and the facility cost and maintenance cost can be reduced. In addition, there is an advantage in terms of economy.

However, in the prior art as described above, acidic gases (HCl, SO ₂ , HF, H ₂ S, etc.) and fine dust can be removed by filtration, dioxins and nitrogen oxides (NO, NO _2, etc.) in the exhaust gas There was a problem that can not be removed efficiently.

The present invention was created to solve the above problems, acidic gases (HCl, SO ₂ , HF, H ₂ S, etc.) and nitrogen oxides (NO, NO ₂ , etc.) that are harmful components of the exhaust gas discharged from the incinerator It is an object of the present invention to provide an integrated exhaust gas purification device capable of removing dioxin and fine dust.

In order to achieve the above object, the integrated exhaust gas purifying apparatus according to the present invention includes a main body having a semi-dry reaction unit, a filtering unit, and a catalyst unit together; Compressed air supply means for supplying compressed air; A slaked lime slurry supply pump for supplying a slaked lime slurry; The upper part of the main body protrudes to the outside of the upper surface and the rest is installed in the main body so as to be located in the central compartment of the main body, an exhaust gas inlet through which the exhaust gas flows is formed in the upper side, the lower end of the gas equalization means A semi-dry reaction portion formed; An activated carbon supply blower connected to the exhaust gas inlet of the semi-dry reaction unit and supplying activated carbon into the semi-dry reaction unit; It is installed at the upper end of the semi-dry reaction unit, and receives the compressed air and the slaked lime slurry supplied from the compressed air supply means and the slaked lime slurry supply means to remove the harmful acid gas in the exhaust gas flowing through the exhaust gas inlet Air subcultured microdroplet injection means for injecting the slurry into the semi-dry reaction unit in a microdroplet state; A plurality of filter units arranged in the left and right partition plates of the filter dust collectors at both ends of the main body, and filtering means for filtering fine dust and dioxins in the exhaust gas from which harmful acid gases have been removed; Reaction liquid supply means for supplying a reaction liquid, either urea water or ammonia water, to the exhaust gas flowing through the filtering means and flowing into both compartments of the main body; It is provided in both compartments of the main body, each partition compartment is formed to form a partition space, the turbulence generating member inlet for introducing the reaction liquid and the exhaust gas, the turbulence generating member inlet is installed in the discharge gas And a turbulence generating member which is mixed with the reaction liquid so as to be in a turbulent state, and catalytic means installed in a space under the turbulence generating member inlet to remove nitrogen oxides contained in the exhaust gas passing through the turbulent generating member; And a partition space forming member having a discharge part through which the filtered discharge gas passing through the catalyst means is discharged to the outside of the main body.

Hereinafter, preferred embodiments of the integrated exhaust gas purifying apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing the internal configuration of the integrated exhaust gas purification apparatus according to the present invention.

The integrated exhaust gas purifying apparatus according to the present invention includes a main body 10 having a housing shape, compressed air supply means 20 for supplying compressed air, a slaked lime slurry supply pump 30 for supplying slaked lime slurry, and a semi-dry type. Reaction unit 40, activated carbon supply blower 50, air subcultured microdroplet injection means 60, filtration means 70, reaction liquid supply means 80, compartment space forming member 90 )

The main body 10 is formed in a rectangular box shape having a substantially rectangular shape. The main body 10 is vertically installed to face each other in the interior of the main body 10 and is separated from each other by a pair of bag filters. It is formed so as to be separated by the center compartment CR and two both compartments SR1 and SR2.

That is, the filter dust collector left and right partition plates 11 and 12 have a rectangular plate shape, and the edge surfaces thereof are in contact with the upper inner wall surface, the lower inner wall surface, and the front and rear inner wall surfaces of the main body 10 to be in contact with the inside of the main body 10. The space is divided into a central compartment CR and two compartments SR1 and SR2.

The compressed air supply means 20 has the same configuration as the compressed air supply apparatus mentioned in the prior art selected by the present applicant, which is a conventional technology and its detailed structure will be omitted.

However, the compressed air supply means 20 in the present invention serves as an air bearing during the injection of the slaked lime slurry written in the air support of the air-floating microdroplet injection means 60 to be described later.

The slaked lime slurry supply pump 30 also has the same configuration as the slaked lime slurry supply pump mentioned in the prior art, which is selected by the present applicant, and thus a detailed structure thereof will be omitted.

On the other hand, the semi-dry reaction unit 40, in the embodiment of the present invention to have a cylindrical shape, a portion of the upper end protrudes to the outside of the upper surface of the main body 10 and the rest of the central compartment of the main body 10 It is installed in the main body 10 so as to be located in the CR, and the exhaust gas inlet 41 is formed in the upper side side inlet for the discharge gas, the lower end portion of the gas evenly to distribute the gas evenly on both ends of the main body 10 Dispersing means 43 is formed.

The gas equalization means 43 formed at the lower end of the semi-dry reaction part 40 is installed at the rear end 42 of the semi-dry reaction part, so that the flow direction of the exhaust gas flows into the filtering means 70.

The activated carbon supply blower 50 supplies activated carbon in a powder state, and is connected to the discharge gas inlet 41 of the semi-dry reaction unit 40 to supply activated carbon into the semi-dry reaction unit 40. .

The air-floating microdroplet spraying means 60 has the same configuration as the air-floating microdroplet spraying means mentioned in the prior art selected by the present applicant, which is a conventional technology, and thus its detailed structure will be omitted. do.

The injection means 60 is installed at the upper end of the semi-dry reaction unit 40, the compressed air supply means 20 to remove the harmful acid gas in the exhaust gas flowing through the exhaust gas inlet 41 ) And the compressed air and the slaked lime slurry supplied from the slaked lime slurry supply pump 30 to spray the slurry into the semi-dry reaction unit 40 in the form of microdroplets.

The filtering means 70 is arranged at least several in each of the pair of filter dust collector left and right partition plates 11, 12 so that the filter body main body 71 is located in the central compartment (CR), the harmful acid gas is It filters the fine dust and dioxins in the exhaust gas removed.

The filter unit body 71 constituting the filtration means 70 uses a ceramic material that can withstand high temperatures, and activated carbon descending along the inside of the semi-dry reaction unit 40 described above is provided in the filter unit body 71. The dioxin is removed by the activated carbon and fine dust is removed by the filtering means 70.

The reaction liquid supply means 80 supplies the reaction liquid, either urea water or ammonia water, to the exhaust gas flowing through the filtering means 70 and flowing into both side compartments SR1 and SR2 of the main body 10. In this configuration, the configuration of the reaction liquid supply pump 81 for supplying the reaction liquid, and the reaction liquid supplied from the reaction liquid supply pump 81 at the upper side of the two compartments (SR1) (SR2). It consists of the reaction liquid injection nozzle 82 which injects.

Finally, the partition space forming member 90 is provided in both side compartments SR1 and SR2 of the main body 10, respectively, and forms the compartment space S3 partitioned from the both side compartments SR1 and SR2. The turbulence generating member inlet 91 and the turbulence generating member inlet 91 through which the reaction liquid and the exhaust gas flow into the turbulence generating member inlet 91 are disposed in the turbulent state to mix the exhaust gas with the reaction liquid. (92), catalytic means (93) installed in the space under the turbulence generating member inlet (91) to remove nitrogen oxides contained in the exhaust gas passing through the turbulence generating member (92), and the catalyst The filtered exhaust gas passing through the means 93 is configured to have a discharge portion 94 discharged to the outside of the body (10).

The turbulence generating member 92 has a lattice structure through which the exhaust gas passes, and the turbulence is promoted as the reaction liquid and the exhaust gas mix better while passing through the lattice structure.

Referring to the operation of the purification device according to the present invention configured as described above are as follows.

When the exhaust gas generated in various industrial sites such as an incinerator starts to flow into the semi-dry reaction unit 40 through the exhaust gas inlet 41 of the semi-dry reaction unit 40, the control unit may provide compressed air supply means 20 and The slaked lime slurry supply pump 30, the activated carbon supply blower 50, and the air-floating microdroplet injection means 60 and the reaction liquid supply means 80 are controlled to operate.

In this case, the slaked lime slurry is injected by the air subcultured microdroplet injection means 60 in the semi-dry reaction unit 40, and activated carbon is discharged along with the exhaust gas through the operation of the activated carbon supply blower 50. Inflow through (41).

First, in the semi-dry reaction section 40, the exhaust gas reacts with the slaked lime slurry to change the toxic acid gas component into a dry product, and the generated product falls on the hopper 15 at the bottom of the body 10. .

On the other hand, the exhaust gas from which the harmful acidic gas component is removed is equally discharged to both sides through the gas equalization means 43 formed at the lower part of the semi-dry reaction part 40, and then the filter part body constituting the filtration means 70 ( 71) the fine dust and dioxin are removed.

Here, the activated carbon discharged from the semi-dry reaction unit 40 and the exhaust gas are in contact with the filter main body 71. At this time, the activated carbon does not pass through the filter main body 71 because the particles of the activated carbon are larger than the discharge gas. Only gas will pass through.

In this process, the exhaust gas is collected and removed by dioxin by activated carbon that does not pass through the filter main body 71.

In addition, fine dust contained in the exhaust gas also does not pass through the filter unit body (71).

Next, the exhaust gas filtered while passing through the filtration means 70 is partitioned together with any one of urea water or ammonia water sprayed in an atomized state through the injection nozzle 82 at the upper sides of both compartments CR1 and CR2. The flow is introduced into the turbulence generator inlet 91 of the space forming member 90, then mixed with each other while passing through the turbulence generating member 92, and the flow is changed to a turbulent state.

The exhaust gas and the reaction liquid changed into the turbulent state are passed through the catalyst means 93 and the nitrogen oxides are removed and discharged to the outside of the main body 10 through the discharge part 94 in a clean gas state.

On the other hand, the present invention is formed in the rear end 42 of the semi-dry reaction unit, a plurality of gas equalization means 43 for guiding the exhaust gas from which noxious acidic gas has been removed to the filtering means 70 is formed. Dispersing means 43 is formed to be inclined so that the flow direction of the exhaust gas toward the filtering means 70 side.

In addition, the present invention includes a plurality of direct gas distribution means for allowing the exhaust gas introduced from the exhaust gas inlet 41 to flow directly below the semi-dry reaction unit 40 inside the upper end of the semi-dry reaction unit 40 ( 45a) and a gas distribution means 45 having a plurality of lateral gas distribution means 45b for allowing flow to the air-floating microdroplet injection means 60 side.

As described above, since the direct gas distribution means 45a and the lateral gas distribution means 45b are formed to generate dispersed flow and turbulence, the calcined lime and activated carbon supply blower injected from the air-floating microdroplet injection means 60. Activated carbon supplied at 50 is mixed with the exhaust gas to increase the reaction efficiency.

In addition, the present invention is removed from the semi-dry reaction portion 40 of the main body 10 corresponding to the lower portion of the central compartment (CR) is collected in the product and the filter body main body 71 and the harmful acid gas is converted into a dry product. Hopper 15 for collecting the fine dust is formed to protrude downward.

The hopper 15 is installed and discharged by installing a separate device to take out the collected product to the outside.

As described above, according to the present invention, acidic gases (HCl, SO ₂ , HF, H ₂ S, etc.), nitrogen oxides (NO, NO _2, etc.), dioxins and fine particles of the exhaust gas discharged from the incinerator Dust can be removed at the same time.

Claims (4)

The enclosure is formed to be separated from the center compartment CR and the two side compartments SR1 and SR2 by a pair of filter dust collectors left and right partition plates 11 and 12 spaced apart from each other and installed vertically to face each other inside. A main body 10; Compressed air supply means for supplying compressed air (20); A slaked lime slurry supply pump 30 for supplying a slaked lime slurry; The upper part protrudes to the outside of the upper surface of the main body 10, and the gas distribution means 45 and the air-floating microdroplet injection means 60 to help the flow of gas therein and the filtering means at both ends of the rear end ( A semi-dry reaction section 40 having a gas equalization means 43 for helping the flow to 70; An activated carbon supply blower (50) connected to the exhaust gas inlet (41) of the semi-dry reaction unit (40) to supply activated carbon into the semi-dry reaction unit (40); It is installed at the upper end of the semi-dry reaction unit 40, the compressed air supply means 20 and the calcined lime slurry supply pump to remove the harmful acid gas in the exhaust gas flowing through the exhaust gas inlet (41) Air subcultured microdroplet injection means (60) receiving compressed air and slaked lime slurry supplied from 30) and injecting the slurry into the semi-dry reaction section 40 in a microdroplet state; At least several arrangements are provided in each of the pair of filter dust collectors left and right partition plates 11 and 12 so that the filter body main body 71 is located in the central compartment CR. Filtration means 70 for filtering dust and dioxin; Reaction liquid supply means 80 for supplying a reaction liquid of any one of urea water or ammonia water to the exhaust gas flowing through the filtering means 70 and into the two compartments (SR1) (SR2) of the main body 10 and ; It is provided in each of the two compartments (SR1) (SR2) of the main body 10, the partition space (S3) is formed to be partitioned with the two compartments (SR1) (SR2), the turbulence generated to the reaction liquid and the exhaust gas flows The member inlet 91 and the turbulence generating member inlet 91 are installed in the turbulence generating member 92 so that the discharge gas is mixed with the reaction liquid to become a turbulent state, and the turbulence generating member 92. In order to remove nitrogen oxide contained in the exhaust gas passing through the catalyst means 93 is installed in the space below the turbulence generating member inlet 91, and the filtered exhaust gas passing through the catalyst means 93 Integral exhaust gas purification device, characterized in that it comprises a partition space forming member (90) having a discharge portion (94) discharged to the outside of the main body (10). The method of claim 1, Integral exhaust gas purification apparatus, characterized in that a plurality of gas equalization means 43 for guiding the exhaust gas from which the harmful acidic gas has been removed to the filtering means 70 in the semi-dry reaction section rear end 42. The method of claim 1, Inside the upper end of the semi-dry reaction unit 40, the gas distribution means 45a and the lateral gas distribution means 45b are formed below, so that the gas distribution means 45 is installed to induce dispersion flow and turbulence to increase the reaction efficiency. Integrated exhaust gas purification apparatus, characterized in that. The method of claim 1, The main body 10 corresponding to the lower part of the central compartment CR is removed from the semi-dry reaction part 40, and a hopper 15 for collecting a product in which harmful acid gas is converted into a dry product is formed to protrude downward. Integrated exhaust gas purification device.

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