KR200473061Y1 - Semi dry reactor for incinerating waste - Google Patents

Semi dry reactor for incinerating waste Download PDF

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Publication number
KR200473061Y1
KR200473061Y1 KR2020130003132U KR20130003132U KR200473061Y1 KR 200473061 Y1 KR200473061 Y1 KR 200473061Y1 KR 2020130003132 U KR2020130003132 U KR 2020130003132U KR 20130003132 U KR20130003132 U KR 20130003132U KR 200473061 Y1 KR200473061 Y1 KR 200473061Y1
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South Korea
Prior art keywords
exhaust gas
semi
bag filter
duct
reaction tower
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KR2020130003132U
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Korean (ko)
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이순기
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이순기
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00—Intercepting solids
    • F23J2217/10—Intercepting solids by filters
    • F23J2217/101—Baghouse type

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treating Waste Gases (AREA)

Abstract

The present invention relates to a semi-dry type reaction system for incineration plants, which is constructed so as to significantly reduce the amount of particles passing from the semi-dry type reaction tower to the bag filter side in constructing a facility for incineration of ordinary solid waste such as household waste, plastic, It's about the tower.
The present invention relates to an exhaust gas purification apparatus for an internal combustion engine, which comprises an incinerator for incineration of waste, a waste heat boiler for cooling high-temperature exhaust gas discharged from the incinerator, and a gas-phase pollutant And a bag filter for removing fine particles contained in the exhaust gas. The conventional incinerator includes a semi-dry type reaction tower for adsorbing heavy metals and dioxins, A casing for introducing the product in the reaction tower is provided in a hopper portion at the lower end of the main body portion of the semi-automatic reaction column. A duct, to which a vibration force is applied by driving the motor, As shown in FIG.

Description

[0001] SEMI DRY REACTOR FOR INCINERATING WASTE [0002]

In the present invention, in constructing a facility for incineration of ordinary solid waste such as household waste, plastic, and rubber to be disposed of, it is necessary to widen the particles passing from the Semi Dry Reactor to the bag filter side To a semi-dry type reaction tower for an incineration plant.

Generally, solid wastes such as waste plastics including various household waste, waste vinyl, waste tires, etc. are treated by landfill or incineration, but it is difficult to obtain landfill as well as contamination of soil due to reclamation of refractory materials. Moreover, Dioxins such as chlorodibenzodioxa acid, chlorodibenzofuran and the like, hydrogen chloride (HCL), hydrogen fluoride (HF), sulfur oxides (SO 2 ) and the like, which is a serious problem.

The well-known incineration facility, which is known as an air pollution control facility, is installed to discharge purified clean air as it can collect and remove particulates from the exhaust gas to be burned. Especially, Are provided additionally.

This facility can be divided into the wet process, the semi-dry process and the dry process. In view of the high solubility of the acid gas, the wet process is the best in terms of removal efficiency, but requires a separate wastewater treatment facility. In the semi-dry process, But there is no need for a secondary wastewater treatment facility, and installation and operating costs are reduced.

However, in the case of the semi-dry process, the hydrodynamic analysis of the exhaust gas and the technique of spraying the chemical into the reaction tower, the conditions required for the reaction and drying, the technique for preventing the accumulation of the chemicals dried on the surface of the reaction tower, And the like.

As a technology known in the art for such an incineration facility, for example, Korean Patent No. 0623854 discloses a process for producing sulfuric acid (SOx) and hydrogen chloride (HCl), which are emitted from boiler burning and post- A technology relating to a "monolithic semitransparent reactor and an electrostatic precipitator" in which harmful gas treatment and dust collection in an air pollution control facility for simultaneously removing dust such as gas and non-oxidized material can be simultaneously performed in an integrated device is disclosed have.

In addition, JP 0654532 A discloses that a guide collar is provided in a duct which is a moving passage of an acid gas moving between a reaction tower and a filter, and a flow of exhaust gas moving in a laminar flow state is caused to flow in a turbulent state, Discloses a technique relating to a " lid for an acidic gas treatment apparatus " in which a chemical is mixed with an unremoved acidic gas and an air pollutant to promote the reaction.

In addition, JP 0769667 A discloses an SCR catalyst tower for removing NOx, SOx, HCl, dioxin, fly ash, and the like, which are harmful substances in the exhaust gas generated during operation of an incinerator, By constructing the SCR catalyst tower in a replaceable manner, it is possible to construct the incineration and combustion treatment system more efficiently by securing the site for the SCR catalyst tower, reducing the cost for equipment and maintenance, Quot; exhaust gas batch processing system for incineration and combustion furnace "

However, in the conventional art as described above, the particles generated by reaction with the drug in the semitransparent reaction column are firmly adhered to the inner wall of the reaction tower by the accumulation, which impedes the free flow of the gas, It is necessary to perform periodic removal operations. Further, in order to increase the efficiency of the reaction, if the amount of the chemical sprayed through the nozzle is increased, it is required to bear the excessive cost of the chemicals.

Further, as the temperature of the exhaust gas entering the bag filter from the reaction tower is lowered, moisture is condensed and clogging occurs in the fine gaps of the bag filter, and the particles in the reaction tower are directly passed through the duct to the bag filter The life of the bag filter is rapidly deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art, and it is an object of the present invention to provide a method and a device for collecting a product in a hopper portion at the lower end of a semi- Type reaction tower for an incineration plant, which can extend the lifetime of a back filter by minimizing the amount of product passing to the bag filter.

In addition, the present invention prevents the product from rapidly entering the duct of the bag filter by the inclined plane constituting the guide vanes or the casing formed in the reaction tower, and also induces a natural fall due to the load of the product Which is capable of restraining the flow of the exhaust gas to the bag filter.

According to an aspect of the present invention, there is provided an incinerator for incinerating wastes, a waste heat boiler for cooling high-temperature exhaust gas discharged from the incinerator, an exhaust gas flowing through the duct from the waste heat boiler, For removing contaminants contained in the exhaust gas, an adsorbent for adsorbing contaminants in the gas phase by injecting liquid slaked lime into the reaction tower, an activated carbon supply unit disposed at the rear stage of the reaction tower for trapping heavy metals and dioxins, A conventional incineration plant comprising a bag filter is provided with a casing for introducing a product in a reaction tower to a hopper portion at the lower end of the main body constituting a semi-dry type reaction column. And a duct to which a power is applied is mounted and connected to the bag filter.

The casing may have an obtuse angle formed by first and second inclined surfaces, and an upper end of the first inclined surface may be circumscribed to a hopper portion of the reaction tower to form an inwardly directed vane. The duct connected to the bag filter So that the product is allowed to fall down to the casing side by keeping the inclination of 10 ° to 20 ° with respect to the horizontal direction.

In the present invention having the above-described characteristics, since a casing having a guide feathers is attached to the lower end of a hopper portion constituting a conventional semitransparent reaction column, the particles generated by reaction with the chemical in the reaction column are rapidly The lifetime of the bag filter can be further extended, and there is no internal obstacle, so that the maintenance can be performed conveniently.

Further, since the outer wall of the casing is formed as an oblique slope forming an obtuse angle and the bottom is widened, it is possible to induce a natural fall by a load at a distance to the bag filter of the product, It is possible to suppress entry of the product by making the duct to have a vibration power in a state inclined.

Brief Description of the Drawings Figure 1 is a schematic illustration of the overall construction of a general waste incineration plant,
FIG. 2 is a schematic view of a semitransparent reaction column of a conventional structure,
3 is a view for explaining a semitransparent reaction tower for an incineration plant according to the present invention,
Fig. 4 is a cross-sectional view showing the essential part of Fig. 3.

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

1 is a schematic view of a general incineration plant. As shown in the drawing, an incinerator 10 for incinerating various kinds of household garbage and solid waste, (11a) and is provided with a waste heat boiler 12 is connected via the, acid, such as a waste heat boiler 12, through a duct (11b), hydrogen chloride (HCL) or hydrogen fluoride (HF), sulfur oxides (SO 2) A semi-dry reaction tower 13 for removing gas is provided.

The duct 11c connected to the rear end of the semitransparent reaction column 13 is supplied with activated carbon to supply an activated carbon supplying unit 14 for collecting heavy metals and dioxins, A bag filter 15 is provided so that the exhaust gas purified through the bag filter 15 can be forcibly discharged to the atmosphere along the flue 17 by the operation of the blower 16. [

That is, the high-temperature exhaust gas generated in the incinerator 10 is cooled to about 200 ° C. to 250 ° C. while passing through the waste heat boiler 12 to make gaseous dioxins into particulate dioxins, The exhaust gas that has passed through the boiler 12 flows into the semi-dry type reaction tower 13.

2, a liquid lime (Ca (OH) 2 ) containing air is supplied from the nozzle 18b at the end of the pipe 18a mounted at the upper center of the semi-dry reaction tower 13, ] is injected as hydrogen chloride contained in the exhaust gas (HCL), hydrogen fluoride (HF), sulfur oxides of potassium persulfate as the (SO 2) such as acid gases and reaction (CaSO 4) or sodium sulfate (Na 2 SO 4) or The conversion to calcium chloride (CaCl 2 ) or sodium chloride (NaCl) is carried out.

Subsequently, the product in the semi-automatic reaction tower 13 is removed through the discharge port 19 or heavy metal substances and dioxins contained in the exhaust gas passing through the duct 11c are supplied to the activated carbon provided from the activated carbon supply unit 14 The unreacted absorbent and the activated carbon are collected by the filter cloth as a part thereof is introduced into the bag filter 15. The clean gas that has passed through each device is then passed through the flue 17 to the atmosphere Is discharged.

3 and 4 are views for explaining a semitransparent reaction column for an incineration plant according to the present invention. The hopper portion 13b at the lower end of the main body portion 13a constituting the semi- A casing 20 for preventing the large and small particles generated by the reaction of the product in the reaction tower 13, that is, the liquid slaked liquor injected from the nozzle 18b with the acid gas, from being transferred to the bag filter 15 .

The body of the casing 20 is constituted by first and second inclined faces 21a and 21b and forms an obtuse angle with each other and the upper end of the first inclined face 21a is connected to the hopper portion 13b and is integrally formed by welding, and at the same time, the guide vanes 22 are formed so as to be extended inside thereof.

The lower end of the casing 20 is provided with a discharge port 23 for discharging and processing the product particles to the outside. An eccentric cam 25a, which rotates in accordance with the driving of the motor 24, The duct 11c to which the power is applied can be connected to the bag filter 15 side in the same manner as before.

The duct 11c is installed so as to maintain an inclination of 10 ° to 20 ° with respect to the horizontal direction so that the product in the reaction tower 13 having a relatively large weight is passed through the duct 11c toward the bag filter 15 And is capable of spontaneously falling to the discharge port 23 at the lower portion of the casing 20 through the duct 26 which vibrates.

This allows the exhaust gas to flow into the reaction tower 13 from the duct 11b of the waste heat boiler 12 and react with the acidic gas contained in the exhaust gas by the liquid slaked liquor injected from the nozzle 18b, Respectively.

At this time, in the case of the existing reaction tower 13, the heavy products may fall directly below the hopper portion 13b, but relatively small products enter the bag filter 15 through the duct 11c together with the exhaust gas Thereby directly shortening the service life of the bag filter 15.

However, even in the case of small particles, the guide vanes 22 formed at the lower end of the hopper portion 13b can not rapidly enter the duct 11c, and the first inclined surface 21a of the casing 20 Is distanced downward, the distance of the product passing to the bag filter 15 is distanced and falls to the second inclined surface 21b side.

In addition, since the duct 11c provided on the first inclined surface 21a of the casing 20 maintains the inclination angle of approximately 10 to 20 degrees and the vibration force by the drive of the motor 24 is applied, the duct 11c The product falling to the bottom of the bag filter 15 can be reduced to the side of the casing 20 and the product entering the bag filter 15 can be suppressed as much as possible.

It will be understood by those skilled in the art that although the present invention has been particularly shown and described with reference to exemplary embodiments thereof, And various modifications and variations are possible within the scope of the claims of utility model registration to be described.

10: incinerators 11a, 11b, 11c: duct
12: Waste heat boiler 13: Semi-closed reaction tower
13a: main body part 13b: hopper part
14: Activated carbon supply part 15: Bag filter
16: blower 17: flue (flue)
18a: Pipe 18b: Nozzle
19: Outlet 20: Casing
21a: first inclined surface 21b: second inclined surface
22: Bow collar 23: Outlet
24: motor 25a: eccentric cam

Claims (3)

A waste heat boiler for cooling the high temperature exhaust gas discharged from the incinerator, and a liquefied lime slurry is injected into the exhaust gas flowing through the duct from the waste heat boiler to adsorb the gaseous contaminants And a bag filter for removing particulates contained in the exhaust gas, wherein the particulate filter comprises a particulate filter and an adsorbent for adsorbing particulate matter contained in the exhaust gas,
A casing 20 for introducing a product in the reaction tower 13 is provided in a hopper portion 13b at the lower end of the main body portion 13a constituting the semi-dry reaction tower 13, And a duct (11c) to which a vibration force is applied by the drive of the motor (24) is mounted on one upper end portion and connected to the bag filter (15). 2. The apparatus according to claim 1, wherein the casing (20) is formed at an obtuse angle by first and second inclined surfaces (21a, 21b), and an upper end of the first inclined surface (21a) And a guide vane (22) is formed inwardly inwardly of the guide vane (22). The duct according to claim 1, wherein the duct (11c) connected to the bag filter (15) is configured such that the product is allowed to fall down to the casing (20) side by maintaining the inclination of 10 ° to 20 ° with respect to the horizontal direction Semi-annular reaction tower for incineration plant.
KR2020130003132U 2013-04-23 2013-04-23 Semi dry reactor for incinerating waste KR200473061Y1 (en)

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KR2020130003132U KR200473061Y1 (en) 2013-04-23 2013-04-23 Semi dry reactor for incinerating waste

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002066305A (en) 2000-08-25 2002-03-05 Sumitomo Heavy Ind Ltd Medium regenerating column, medium regenerating method, waste gas treating device and waste gas treating method
KR20080002732U (en) * 2007-01-16 2008-07-21 (주)스카이테크 The Hopper of Spray-Dry Reactor for Flue Gas

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002066305A (en) 2000-08-25 2002-03-05 Sumitomo Heavy Ind Ltd Medium regenerating column, medium regenerating method, waste gas treating device and waste gas treating method
KR20080002732U (en) * 2007-01-16 2008-07-21 (주)스카이테크 The Hopper of Spray-Dry Reactor for Flue Gas

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