KR101788165B1 - high temperature incinerator of high molecule waste - Google Patents

Abstract

The present invention relates to a high-temperature incineration apparatus for suppressing the generation of dioxins, and more particularly, to a high-temperature incineration apparatus for suppressing the generation of dioxins, which comprises a lower combustion section for primary combustion of waste and an upper combustion section arranged communicably on the lower combustion section, And a body portion having a double structure composed of an inner cylinder disposed inside the outer cylinder; A stack for discharging the filtered exhaust gas to the outside; A pair of cyclone dust collectors disposed at one side of the upper combustion part and having a suction pipe connected to the exhaust port of the upper combustion part and a discharge pipe communicating with the lower part of the stack, And an air blower having an air distribution damper for regulating and supplying the air with the air duct and the stack.

Description

TECHNICAL FIELD [0001] The present invention relates to a high-temperature incinerator for high-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-temperature incineration apparatus for completely burning flame-retardant polymer wastes and suppressing the generation of dioxins and fine dusts. In particular, the present invention is designed to burn a double combustion furnace and an upper combustion furnace in order to induce complete combustion of waste To a high-temperature incineration apparatus capable of suppressing the generation of dioxins. The invention also relates to a small incinerator of less than 200 kg / hr.

In recent years, various studies have been conducted to solve the problem of waste disposal and environmental pollution caused by the rapid increase of household garbage and industrial waste.

Generally, wastes are disposed in an incinerator and burned. This incineration process emits exhaust gases such as unburned dust, carbon monoxide, dioxins, nitrogen oxides and the like due to incomplete combustion while burning the waste. In order to reduce such harmful components, a complicated air pollution prevention facility is additionally provided have.

Patent Document 1 proposes an incinerator device capable of improving the efficiency of purification by supplying air into a body portion providing a combustion space to induce complete combustion while retaining the exhaust gas in the purification space portion through an air curtain. Patent Document 1 has a limitation in incineration of a large amount of waste due to the space occupied inside the main body portion formed upward from the bottom face of the combustion main body portion, And the like.

Korean Patent No. 10-1745875

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an incinerator having separate collecting means for unburned dust at the rear end as well as a structure capable of double combustion to induce complete combustion of waste .

In order to attain the above object, a high-temperature incinerator for suppressing generation of noxious substances according to a preferred embodiment of the present invention,

A water-cooled jacket double structure composed of an outer cylinder and an inner cylinder disposed inside the outer cylinder to divide the waste into a lower combustion part for primary combustion and an upper combustion part for communicating with the lower combustion part to induce secondary complete combustion A combustion furnace having a main body portion;

A pair of cyclone dust collectors disposed at one side of the upper combustion part and having a suction pipe connected to the exhaust port of the upper combustion part and a discharge pipe communicating with the lower part of the stack,

A stack for discharging the filtered exhaust gas to the outside; And

And an air blower having an air distribution damper for facilitating discharge of exhaust gas to the atmosphere.

In an embodiment of the present invention, the lower combustion portion includes an inlet for allowing the internal inflow of the waste; An ignition burner for providing a heat source inside; An outlet for discharging the ash; A reverse side portion hinged to the inside of the inlet; And an air duct for feeding air into the lower combustion unit.

In particular, the present invention relates to an air supply duct disposed along a circumference of a lower portion of an inner cylinder, a connecting duct connecting between a duct and an air distribution damper; And a plurality of branch ducts vertically installed in the duct and arranged along the circumference of the inner cylinder to spray air into the inner cylinder.

Here, the plurality of injection nozzles are spaced apart along the longitudinal direction of the branch duct, and the plurality of injection nozzles are installed at different angles on the inner wall of the inner cylinder so as to be capable of turning the airflow in the lower combustion furnace.

In an embodiment of the present invention, the upper combustion portion includes a refractory chamber formed in a cylindrical shape opening downward toward the lower combustion portion and having a through hole formed in the side wall thereof; A control burner disposed in the center of the refractory chamber; And an exhaust port disposed at the same level as the side wall of the refractory chamber.

Preferably, the inlet tube of the present invention may be formed so that the cross-sectional area of the tube becomes smaller as it approaches the cyclone dust collector.

In addition, the present invention may further include an induction duct extending from the air distribution damper to the lower end of the stack.

In the present invention, the cyclone dust collector and the stack are subjected to aluminum hot-dip coating so as to ensure a function maintenance even at a high temperature.

The present invention has a duct extending from the upper side of the body portion to the stump, and the duct may further include a water separator.

The combustion furnace of the present invention can be composed of a body portion having a water-cooled jacket between the outer cylinder and the inner cylinder.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to the present invention, the present invention proposes an incinerator for collecting unburned dust as well as high temperature oxidation of harmful substances in combustion gas through double combustion.

In particular, the present invention is characterized in that a pair of cyclone dust collectors are arranged in parallel on one side of a combustion furnace, and each intake tube equipped in a pair of cyclone dust collectors is connected to the exhaust port of the combustion furnace by a parallel piping system, The dust collector can also maximize the collection efficiency. The present invention also includes a pair of cyclone dust collectors.

In addition, according to the present invention, a pair of cyclone dust collectors are disposed on one side of the furnace, so that the center of gravity of the overall incinerator can be lowered to pursue structural stability.

As described above, according to the present invention, there is provided a burner comprising: a lower combustion section for first combustion through an incineration heat or a flame of an ignition burner; and a lower combustion section for burning the combustion gas generated in the lower combustion section, It is possible to suppress the discharge of the noxious gas primarily.

The present invention provides an air duct and a plurality of air injection nozzles capable of uniformly supplying the air necessary for combustion to the combustion furnace, specifically, the entire lower combustion section, in order to increase the combustion efficiency in the combustion furnace.

1 is a perspective view schematically showing a dioxin generation-inhibiting high-temperature incinerator according to the present invention.
2 is a left side view schematically showing a dioxin generation-inhibiting high-temperature incinerator according to the present invention.
FIG. 3 is a front view of a high-temperature incineration plant inhibiting the generation of dioxins according to the present invention. FIG. 3 is a cross-sectional view of only a combustion furnace to help understand the internal structure of a combustion furnace.
4 is a cross-sectional view of a high-temperature incineration apparatus for cutting off dioxin generation generated on line IV-IV in FIG. 3 (there is no branch duct 13b and air nozzle 131 at a cross-sectional position, but it is shown for the sake of understanding).
5 is a schematic view of an air duct to be installed around the outer circumferential surface of the inner cylinder of the combustion furnace.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the invention will become more apparent from the following detailed description and examples taken in conjunction with the accompanying drawings. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. In this specification, the terms first, second, etc. are used to distinguish one element from another, and the element is not limited by the terms. In the accompanying drawings, some of the elements are exaggerated, omitted or schematically shown, and the size of each element does not entirely reflect the actual size.

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

TECHNICAL FIELD The present invention relates to a high-temperature incineration apparatus for suppressing the generation of dioxins having a dust collecting structure such as unburned dust (fine dust) together with a double combustion structure for increasing waste incineration efficiency of waste.

To this end, the dioxin generation-inhibiting high-temperature incinerator according to a preferred embodiment of the present invention roughly comprises a combustion furnace 1, a cyclone dust collector 2, a blower 3, and a stack 4.

The incinerator for suppressing the generation of dioxins according to the present invention includes a combustion furnace 1 designed to incinerate waste at a high temperature. Preferably, the combustion furnace 1 includes a lower combustion section 11 for providing a primary combustion space, The lower combustion part 11 and the upper combustion part 12 are fabricated and then assembled, and then a bolt and a nut (not shown) are assembled to the upper combustion part 12 and the upper combustion part 12, respectively. To maintain the coupled state. The lower combustion portion 11 and the upper combustion portion 12 can be assembled and separated, and thus it is easy to manufacture, install and transport.

The combustion furnace 1 generally comprises a cylindrical body portion 10a having a double structure composed of an outer cylinder 10a, an inner cylinder 10b disposed inside the outer cylinder 10a, and a water-cooled jacket 10c 10). The inner cylinder 10b is spaced apart from the inner wall of the outer cylinder 10a by a predetermined distance to secure a cooling water circulation space between the inner cylinder 10b and the outer cylinder 10a. That is, the combustion furnace 1 intervenes between the outer cylinder 10a and the inner cylinder 10b, the water-cooled jacket 10c for cooling the high-temperature heat generated inside the main body 10. [ The incinerator according to the present invention may be any water-cooled jacket which can receive cooling water and realize water-cooled cooling through circulation of cooling water.

The combustion furnace 1 is provided with the lower combustion section 11 on the lower side of the main body section 10 and the upper combustion section 12 so as to communicate with the upper part of the lower combustion section 11 .

The water-cooled jacket 10c between the outer cylinder 10a and the inner cylinder 10b is closed at the lower end of the upper combustion portion 12 and the upper end of the lower combustion portion 11 and the upper combustion portion 12 and the lower combustion The parts 11 are assembled by using bolts and nuts which are manufactured and then fastened to the flanges. Both ends of the cooling water circulation pipe 14 are coupled to the outer cylinder 10a of the upper combustion part 12 and the lower combustion part 11, respectively. The cooling water of the upper combustion portion 12 and the lower combustion portion 11 flows through the plurality of cooling water circulation pipes 14.

The lower combustion portion 11 includes a charging port 111 for allowing the waste to be internally introduced into the main body portion, an ignition burner 112 for providing a heat source inside the lower combustion portion 11, As shown in Fig. The lower combustion portion 11 is provided with a reverse side support portion 114 inside the inlet 111 so as to prevent the back flame of the internal flame when the inlet 111 is opened for inflow of waste. The backflow prevention part 114 is hinged to allow entry of waste introduced into the lower combustion part 11 through the inlet 111. [

In the present invention, the lower combustion section 11 may be a surface combustion section for directly reacting and burning the waste air with the air supplied into the inner cylinder through the injection nozzle 131. As described above, the combustion furnace 1 can provide a structure capable of ensuring the inflow and / or introduction of reliable air inside the lower combustion portion 11 so as to promote combustion of the waste.

That is, the combustion furnace 1 of the present invention includes a blower 3 for supplying air into the lower combustion part 11, wherein the blower 3 adjusts the amount of air injected through the air distribution damper 30 So that it can be supplied to the lower combustion section 11.

The combustion furnace 1 can smoothly transfer the air from the air distribution damper 30 into the lower combustion portion 11 through the air duct 13 extending to the inside of the inner cylinder 10b. Is connected to the air distribution damper 30 to form an air chamber 13a formed on the lower side of the lower combustion part 11 and a plurality of branch ducts 13b and branch ducts 13b perpendicularly installed from the air chamber 13a, And a plurality of injection nozzles 131 extending into the lower combustion portion 11, for example, the inner cylinder 10b.

The branched duct 13b extends vertically upward and downward along the space between the outer cylinder 10a and the inner cylinder 10b while being equally spaced along the circumference of the inner cylinder 10b so that the inner cylinder 10b ) Are uniformly arranged on the outer wall. The branched duct 13b is welded to the inner cylinder 10b to form a passage of air as a space between the branched duct 13b and the inner cylinder 10b.

In addition, the plurality of injection nozzles 113 are spaced along the longitudinal direction of each branch duct 13b installed in the vertical direction. The plurality of injection nozzles 113 are arranged at different heights from the lower side to the upper side of the lower combustion part 11 to uniformly inject the air required for combustion from the lower part to the upper part so that the local combustion can be prevented in advance.

The injection nozzle 113 extends into the inner cylinder 10b through the inner cylinder 10b in a plurality of branched ducts 13b arranged around the outer circumferential face of the inner cylinder 10b, And is disposed at an angle inclined to one side away from the center of the inner cylinder 10b without facing the center of the inner cylinder 10b (see Fig. 4). The injection nozzle 113 injects air into the lower combustion part 11 and circulates along the inner wall of the cylinder so as to spread evenly in the inner space of the lower combustion part to sufficiently improve the combustion efficiency by mixing the combustible gas and the combustion air .

In addition, the air in which the airflow is formed in the swirling manner can prevent the formation of the clinker in the inner wall of the combustion furnace 1, specifically the inner cylinder 10b of the lower combustion section 11, in advance.

For example, the present invention can be applied to a case where combustion gas and / or unburned dust containing a combustible gas generated by pyrolysis due to surface combustion of waste in the lower combustion section 11 is supplied to the upper combustion The user can forcibly guide the user to the unit 12.

As described above, the upper combustion portion 12 can perform the secondary combustion process in the high temperature environment of 800 ° C or more according to the waste management method for the combustion gas containing the combustible gas and the unburned dust. As shown in the figure, the upper combustion portion 12 includes a refractory chamber 121 disposed therein, a control burner 122 disposed at one side of the refractory chamber 121, an exhaust port 123 disposed at one side, A steam duct 124 for guiding the steam generated in the steam generator 10c to the stack 4 and a steam separator 125 installed in the steam steam line 124. [

The steam duct 124 is extended from the upper side of the main body 10 to the stack 4, and has a water separator 125 on the steam duct. The water separator 125 separates the steam and the condensed water to recover the condensed water into the water-cooled jacket 10c of the combustion furnace 1, while allowing the steam to be discharged to the stack 4 alone.

The upper combustion part 12 has a tubular refractory chamber 121 opened at the bottom to induce high temperature complete combustion and has a through hole 121a at a sidewall of the refractory chamber 121.

The refractory chamber 121 provides a space that can be re-combusted while delaying the residence time of the combustion gas so that the incompletely burnt combustion gas can be completely combusted in the lower combustion section 11 through the structural characteristics, To the exhaust port (123). The upper combustion portion 12 should maintain the internal temperature of the refractory chamber 121 at a high temperature of 800 DEG C or more, for example, to remove harmful substances such as dioxin. The refractory chamber 121 can maintain the temperature in the chamber at a high temperature through the start of the control burner 122.

The upper combustion portion 12 is disposed at the same level as the exhaust port 123 and the sidewall of the refractory chamber 121 so as to pass the exhaust gas of the second combustion completely through the exhaust port 123 to the cyclone dust collector To be guided to the intake pipe 210 (indicated by the dotted arrow in Fig. 4).

The upper combustion section 12 may further include a fresh water heat exchanger 126 capable of recovering combustion heat on the refractory chamber 121. The fresh water heat exchanger 126 can provide hot water to the outside using the heat of combustion.

As is widely known, the cyclone dust collector 2 is a constituent member for collecting unburned dust (fly ash, etc.) in the exhaust gas completely burned generated in the combustion furnace 1, and is a suction member for guiding the exhaust gas to be sucked in the tangential direction And a discharge pipe 220 for discharging the filtered exhaust gas to the upper portion of the cylindrical body. The cyclone dust collector 2 can circulate unburned dust and collect the dust under the gravity sedimentation system, and only the filtered exhaust gas can be discharged to the outside through the stack 4, and various types of dust collectors It can also be adopted.

Particularly, the present invention is characterized in that a pair of cyclone dust collectors 2 are disposed in the combustion furnace 1, preferably on one side of the upper combustion portion 12. [

To this end, in the present invention, one exhaust port 123 is disposed at the same height as the two suction pipes 210 extending from the pair of cyclone dust collectors 2, and these are communicably coupled. The pair of cyclone dust collectors 2 arranged in parallel in parallel to each other in the vertical direction are smaller in diameter than the large cyclone dust collectors, so that the centrifugal force and the rotating speed can be easily improved and the dust collecting efficiency can be maximized Respectively. Unlike the prior art, a pair of cyclone dust collectors 2 can be disposed on one side of the combustion furnace 1 to reduce the overall installation height of the incinerator according to the present invention and ensure structural stability with a low center of gravity .

Further, the present invention reduces the size of the sectional area of the suction pipe 210 as it approaches the cyclone dust collector 2, which can vary the flow rate of the exhaust gas flowing along the suction pipe according to the law of continuity have. The law of continuity is that when the fluid flows along the conduit, the flow velocity of the fluid is inversely proportional to the cross-sectional area of the conduit. Therefore, it is possible to enter the cylindrical body of the cyclone dust collector 2 at a very high speed through the suction pipe 210, and as a result, this serves as a parameter for improving the dust collecting efficiency.

The discharge pipe 220 of each cyclone dust collector 2 communicates with the lower part of the stack 4 to discharge the filtered exhaust gas to the outside. The upper end of the stack 4 is provided with a cone-type cover (not shown) to prevent the inflow of the rainwater into the stack of the rainwater and to allow the exhaust gas to be discharged smoothly.

In addition, the present invention can forcibly guide a part of the air to the induction duct 43 via the air distribution damper 30 coupled to the blower 3 that supplies air into the lower combustion part 11 . The lead duct 43 extends from the air distribution damper 30 to the lower end of the stack 4 as shown in the drawing. The air supplied to the induction duct 43 quickly escapes to the stack 4 and lowers the pressure of the lower internal region of the stack 4 coupled with the discharge pipe 220 of the cyclone dust collector 2. As a result, the pressure in the lower internal region of the stack 4 becomes smaller than the atmospheric pressure, and the exhaust gas discharged to the discharge pipe 220 of the cyclone dust collector 2 can be quickly discharged to the atmosphere through the stack 4. That is, it is preferable that the coupling portion between the lead duct 43 and the stack 4 is positioned lower than the coupling portion between the discharge pipe 220 of the cyclone dust collector 2 and the stack 4.

The cyclone dust collector 2 and the inside of the stack 4 which are in contact with the high-temperature exhaust gas subjected to the combustion treatment in the upper combustion section 12 are subjected to aluminum hot-dip treatment and heat-resistant · It is possible to secure the corrosion resistance.

While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the present invention is not limited to the above-described embodiments, It will be apparent that modifications and improvements can be made by those skilled in the art. 2 and 3, a nitrogen oxide (NOx), which is a very small amount of harmful substance discharged from the discharge pipe 220 and the stack 4 by arranging a harmful gas reduction device , Hydrogen chloride, and the like can be neutralized, and an inspection port can be provided on the upper part of the noxious gas reduction device.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1 ----- combustion furnace,
11 ----- Lower combustion part,
112 ----- Ignition burner,
12 ----- upper combustion portion,
122 ----- Control burner,
13 ----- Air duct,
131 ----- injection nozzle,
14 ----- Cooling water circulation pipe
2 ----- Cyclone dust collector,
3 ----- blower,
4 ----- Stack.

Claims (11)

A lower combustion part 11 for primary combustion of waste and an upper combustion part 12 for communicating with the lower combustion part 11 to induce secondary complete combustion are coupled to each other, And an inner cylinder (10b) disposed inside the outer cylinder (10a); a combustion chamber (1) having a double-structure main body (10);
A stack (4) for discharging the filtered exhaust gas to the outside;
A suction pipe 210 connected to an exhaust port 123 of the upper combustion unit 12 and a discharge pipe 220 connected to a lower portion of the stack 4, A cyclone dust collector (2);
An air duct 13 for feeding air into the lower combustion part 11; And
And a blower (3) having an air distribution damper (30) for regulating and supplying air to the air duct (13) and the stack (4)
Wherein the suction pipe (210) is formed so that the cross sectional area of the pipe becomes smaller as it is adjacent to the cyclone dust collector (2).
The method according to claim 1,
The lower combustion part (11)
An inlet (111) for allowing the internal inflow of the waste;
An ignition burner 112 for providing a heat source inside;
An outlet 113 for discharging the ash; And
(114) hinged to the inside of the inlet (111).
The method according to claim 1,
The air duct (13)
An air chamber 13a connected to the air distribution damper 30 and formed below the lower combustion portion 11;
A plurality of branched ducts 13b vertically installed in the air chamber 13a and arranged along the outer circumferential surface of the inner cylinder 10b and having an injection nozzle 131 for injecting air into the inner cylinder 10b; A high - temperature incineration system for suppressing the generation of dioxins.
A lower combustion part 11 for primary combustion of waste and an upper combustion part 12 for communicating with the lower combustion part 11 to induce secondary complete combustion are coupled to each other, And an inner cylinder (10b) disposed inside the outer cylinder (10a); a combustion chamber (1) having a double-structure main body (10);
A stack (4) for discharging the filtered exhaust gas to the outside;
A suction pipe 210 connected to an exhaust port 123 of the upper combustion unit 12 and a discharge pipe 220 connected to a lower portion of the stack 4, A cyclone dust collector (2);
An air duct 13 for feeding air into the lower combustion part 11; And
And a blower (3) having an air distribution damper (30) for regulating and supplying air to the air duct (13) and the stack (4)
The air duct (13)
An air chamber 13a connected to the air distribution damper 30 and formed below the lower combustion portion 11;
A plurality of branched ducts 13b vertically installed in the air chamber 13a and arranged along the outer circumferential surface of the inner cylinder 10b and having an injection nozzle 131 for injecting air into the inner cylinder 10b; Respectively,
The injection nozzles 131 are spaced apart from each other along the longitudinal direction of the branched duct 13b,
Wherein the plurality of injection nozzles (131) are installed at an inner wall of the inner cylinder (10b) at an oblique angle to the center of the inner cylinder (10b) but offset from the center.
The method according to claim 1,
The upper combustion portion (12)
A refractory chamber 121 formed in a tubular shape and opening downward toward the lower combustion portion 11;
A control burner 122 disposed on one side of the refractory chamber 121; And
And the exhaust port (123) disposed at the same level as the sidewall of the refractory chamber (121).
delete The method according to claim 1,
Wherein the stack (4) further comprises an introducing duct (43) extending from the air distribution damper (30) to a lower end of the stack.
The method according to claim 1,
Wherein the cyclone dust collector (2) and the stack (4) are aluminum hot-dip treated.
The method according to claim 1,
And a steam duct (124) extending from the upper side of the main body (10) to the stack (4)
Wherein the steam duct (124) further comprises a water separator (125).
The method according to claim 1,
The combustion furnace 1 comprises a main body 10 having a water-cooled jacket 10c between the outer cylinder 10a and the inner cylinder 10b.
The method according to claim 1,
A high-temperature incineration apparatus capable of separating and assembling the lower combustion unit (11) and the upper combustion unit (12) to facilitate the production, installation and transportation of dioxins.

Images