KR101870127B1 - Thermal decomposition drum heat insulation construction of rotary incinerator and the heating construction method using the same - Google Patents

Abstract

The present invention relates to a thermal decomposition drum heat insulation construction of a rotary incinerator and a thermal decomposition drum heating construction method using the same and, more particularly, to a novel technique by which a thermal decomposition drum for high-temperature waste burning and incineration can be kept warm and an emergency stop of the thermal decomposition drum in operation can be prevented by suppressing damage to a heat insulation material and an exterior material over a long period of time. By nature, conventional thermal decomposition drums are subject to centrifugal force-based damage to insulating materials with time, and then insulating material scattering and exterior material damage lead to emergency stop and huge costs. Also, re-operation of the thermal decomposition drum results in costs. The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a heat insulating material surrounding the outer peripheral surface of the thermal decomposition drum between heat insulating material fixing bars radially attached in a longitudinal direction between multiple exterior material fixing rings attached to surround the circumferential surface at a distance along the longitudinal direction of the thermal decomposition drum and an exterior material surrounding the outside of the heat insulation material can be fixedly installed at the exterior material fixing ring.

Description

TECHNICAL FIELD [0001] The present invention relates to a thermal decomposition drum thermal insulation structure for a rotary incinerator, and a thermal decomposition drum thermal insulation structure using the thermal decomposition drum structure,

The present invention relates to a novel concept of preventing a breakdown of a thermal cracking drum during operation by inserting a pyrolytic drum for burning a waste at a high temperature and inserting the thermal cracking drum, as well as suppressing the breakage of the heat insulating material and the casing.

Incineration is a type of waste treatment method that burns waste and reduces the volume and weight of the waste. Recently, as the landfill for waste treatment has become scarce, the disposal of waste using the incineration method is increasing rapidly.

The rotary incinerator for incinerating waste is provided with a cylindrical incinerator provided with a screw blade on its inner wall for rotation, a supply device for introducing incineration substances into the inside of the rotary incinerator, and a blower installed around the burner and its periphery And a discharge device for discharging the burned material is provided in the lower part.

In the conventional rotary incinerator having the above structure, when the cylindrical incinerator is rotated and the trash is supplied to the supply device, the trash is moved forward by the screw blades of the inner wall, and the burner burns and discharges the air while supplying air. And discharging it to the lower discharge device, the garbage is pyrolyzed and is made into resources.

As a prior art related to such a rotary incinerator, "Patent Registration No. 481233 Incineration water injector for rotary incinerator" is disclosed.

The pyrolysis drums of all rotary incinerators including the prior art operate for 3 to 4 rotations per minute for 365 days without interruption, the temperature at the inlet is 250-300 ° C. and the outlet ) Is in the range of 450 to 500 ° C, and the outside of the pyrolysis drum should be insulated so that such high-temperature heat is not discharged to the outside.

However, in the conventional general type of insulation, due to the characteristics of the pyrolytic drum as a rotating body, as the time passes, the insulating material is broken due to the centrifugal force and the breakage of the insulating material and the breakage of the casing cause an unexpected stoppage. And a loss of 4 to 50 million won is caused once at the time of restart.

In order to solve the above-mentioned problems, the present invention provides a heat insulation drum for a heat insulation drum, comprising: a plurality of heat insulating material fixing bars mounted radially in a longitudinal direction between a plurality of exterior material fixing rings, A thermal insulating material surrounding the outer circumferential surface of the pyrolytic drum is provided between the outer circumferential surface of the pyrolytic drum and the outer circumferential surface of the pyrolytic drum.

In addition, the present invention is characterized in that a plurality of anti-departure prevention circular strips are concentrically attached to the outer surface of a plurality of side insulated material fixing bars radially attached to the side of the thermal decomposition drum, A technique for providing a side heat insulating structure capable of inserting a heat insulating material is proposed.

In the present invention, a heat insulating material surrounding the outer circumferential surface of the thermal cracking drum is provided between the heat insulating material fixing bars to maintain the heat preservation, and the outer surface of the heat insulating material is wrapped with a nonwoven fabric to prevent scattering of the heat insulating material. A new concept of thermal insulation construction technique is proposed, in which the outer casing is wrapped around the outer casing and the outer casing is bent into a binding band to finish the casing.

Further, in the present invention, the side insulators are sandwiched in the insulator insertion portions formed between the side insulator fixing bars, and the outer side faces of the side insulators are bent into the escape prevention band to prevent the side insulators from being separated by the centrifugal force The technology of the new concept warming construction method is sought.

According to the present invention, it is possible to prevent the breakage and scattering of the heat insulating material even when the centrifugal force acts due to repeatedly rotating the pyrolytic drum while maintaining the high temperature heat, and also to prevent the expansion due to the high temperature heat during operation of the pyrolytic drum. By preventing breakage, it is possible to suppress the occurrence of unexpected operation stoppage of the pyrolysis drum to reduce cost loss due to stoppage of operation, and to provide an effect of exhibiting smooth incineration performance of waste.

Further, the present invention provides an effect of further reducing the operation and maintenance costs by checking the condition of the insulating material and the binding band after dismantling the exterior material in the periodical inspection process once or twice every year for the inspection purpose, and reusing the exterior material again. do.

1 is a front view of a pyrolysis drum to which the present invention is applied
2 is a cross-sectional view of the pyrolysis drum of the present invention
3 is a sectional view taken along the line AA of Fig. 1
4 is a sectional view taken along line BB of Fig. 1
5 is a side cross-sectional view of a state in which the insulating material of the present invention is fitted
6 is a front view of a state in which the insulating material of the present invention is installed
7 is a front view of the nonwoven fabric of the present invention
Fig. 8 is a front view of a state in which a binding band is banded on the outer surface of the nonwoven fabric of the present invention
Fig. 9 is a front view showing a state in which the insulating material and the nonwoven fabric of the present invention are repeatedly installed
10 is a front sectional view of a state in which the exterior material of the present invention is installed
11 is a sectional side view of the exterior material of the present invention,
Fig. 12 is a front view of a state in which an end portion of another facer material is overlapped with a cut portion formed at the facer end portion of the present invention
Fig. 13 is a front view showing a state in which a binding band is bent on the outer surface of the exterior material of the present invention
14 is a side view and a front sectional view of the side heat insulating structure of the present invention
Fig. 15 is a side view of a state in which a side insulating material is inserted into the insulating material inserting portion of the present invention
16 is a cross-sectional view
Fig. 17 is a front view and a plan view of a cut-away portion connection state of the departure prevention anti-

Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

The overall structure according to the preferred embodiment of the present invention will be schematically described with reference to the accompanying drawings. The components of the casing fixing ring 10, the plurality of the heat insulating material fixing bars 20, the insulating material 30, .

Hereinafter, the present invention having the above-described schematic configuration will be described in more detail for facilitating the implementation.

The present invention relates to a method for inserting a thermal decomposition drum 1 of a rotary incinerator, in which a plurality of exterior material fixing rings 10 are circumferentially spaced apart from each other along the longitudinal direction of the pyrolysis drum 1 as shown in FIGS. 1 to 4 And the outer ring fixing ring 10 serves to fix the outer casing 40 to the piece 42 using the impact driver after the thermal insulation operation is completed.

A plurality of insulator fixing rods 20 are radially attached along the longitudinal direction between the outer casing fixing ring 10 and the heat insulator fixing bars 20 are formed such that the heat insulators 30 slide in the longitudinal and circumferential directions Thereby preventing the flow and maintaining a firm fixed state.

Therefore, as shown in FIG. 5, a plurality of heat insulating materials 30 can be installed between the heat insulating material fixing bars 20 to cover the outer circumferential surface of the thermal cracking drum 1 without fail.

After the thermal insulation material 30 is installed on the outer surface of the thermal insulation material 30, a thermal insulation material 40 such as a quarry is installed on the outer surface of the thermal insulation material 30, and both longitudinal sides of the thermal insulation material 40 are covered with the thermal insulation material fixing ring 10 So that it can be integrally fixed.

As shown in FIG. 5, the insulator fixing bar 20 is made of a steel sheet having a T-shaped cross section, so that both sides of the insulator 30 partially press the outer surface of the heat insulating material 30 to prevent the heat insulating material 30 from being released to the outside, And the casing material fixing ring 10 is made of a steel material having a T-shaped cross section so that the casing material 40 adhered to both sides of the outer circumferential surface can be integrally fixed using the pieces 42 to provide.

In addition, the heat insulating material fixing bar 20 and the casing fixing ring 10 are designed to solve the problem of warping due to thermal expansion during operation. As shown in FIG. 2, Even if thermal expansion occurs, they do not collide with each other, thereby preventing the occurrence of twisting or deformation.

The outer ring fixing ring 10 may be formed as a single body, but is a technique for eliminating warping due to thermal expansion during operation. The outer ring fixing ring 10 is divided into a plurality of parts along the circumferential direction as shown in FIG. 4, The plurality of outer casing fixing rings 10 are installed at mutually spaced intervals L1 like the train rails so that even if thermal expansion occurs, the plurality of outer casing members 40 are not collided with each other, .

The exterior material 40 of the present invention is further combined with a technique of sliding along the longitudinal direction in consideration of thermal expansion in the longitudinal direction of the pyrolysis drum 1 during operation.

The casing member 40 disposed between the casing member 10 and the casing member 40 is not formed as a unitary body but may be divided into a plurality of casing members 40, And the overlapped portions are fixed to each other by the mutual pieces 42. The overlapped portions are not fixed by the pieces 42 but are maintained in the overlapped state, so that even if thermal expansion occurs The overlapped outer sheath 40 is freely slidable along the longitudinal direction to effectively prevent the fixing portion from being blown or broken.

Further, the present invention is further combined with a technique of allowing the casing material 40 to slide along the circumferential direction in consideration of thermal expansion in the circumferential direction when the pyrolysis drum 1 is operated.

As shown in FIG. 11, the casing member 40 is divided into a plurality of sections along the circumferential direction, and the casing member 40, which is divided into a plurality of sections, And the overlapped portions are integrally fixed to each other by the mutual pieces 42. The overlapped portions 42 are not fixed by the pieces 42 but are maintained in the overlapped state so that even when thermal expansion occurs, Thereby effectively preventing the fixing portion from being blown or broken as sliding along the direction.

Here, one of the pair of outer casings 40, which is not fixed by the piece 42 but is slidably overlapped, is formed with a pair of cut-out portions 43 on both sides of the outer casings 40 at intervals, One of the facings 40 is overlapped with the end inserted into the cutout 43.

Therefore, when the pyrolytic drum 1 installed in a tilted state is rotated, the load is concentrated to the lower side of the inclined portion, so that one side (upper side) of the facer 40 is relatively loosened so that the two sides are not uniformly overlapped, The outer covering member 40 fitted to the cut-out portion 43 when the temperature is lowered after the thermal expansion is reduced to the original shape while the temperature is lowered after the thermal expansion, So as to prevent excessive shrinkage, thereby preventing the thermal insulation 30 from being damaged due to pressing or pressing.

In the meantime, the present invention is further combined with the technique of the side heat insulation structure 60 that not only firmly insulates the outer circumferential surface of the thermal decomposition drum 1 but also insulates the side surface of the thermal decomposition drum 1.

14 to 16, a plurality of T-shaped lateral heat-insulating material fixing bars 61 are radially attached to the side of the thermal decomposition drum 1, and the lateral heat-insulating material fixing bars 61 A pair of separation preventing circular belts 62 having different diameters in a concentric circular shape are attached to the outer surface thereof.

A side heat insulating material 64 is inserted into the heat insulating material inserting part 63 and the side heat insulating material 64 is inserted into the side heat insulating material inserting part 63, Preventing band 65 is wrapped around the outer circumferential surface of the side surface heat insulating material 64 so that the side surface insulating material 64 is bent when the thermal decomposition drum 1 rotates. Even if the centrifugal force acts, it is prevented from being released to the outside.

The scattering prevention plate 66 is further inserted into the heat insulating material insertion portion 63 so as to be in close contact with the separation preventing circular band 62 so that the scattering preventing plate 66 is provided with a gap between the separation preventing circular band 62 Thereby preventing the side surface insulating material 64 from being exposed to the outside and also preventing the side surface insulating material 64 from being broken and scattered.

In addition, the anti-departure circular band 62 for preventing the lateral heat insulating material 64 from being bent or collapsed due to high-temperature heat collides with the fixing device such as the chamber, and eventually the side insulating member 64 is broken, 17, the release preventing ring-shaped band 62 is formed with a cut-off portion 67 in which a certain portion is cut off, and the cut- The sliding guide 68 is attached to both the front and rear surfaces of the one of the release preventing ring-shaped zones 62. The other one of the release preventing ring-shaped zones 62 is fitted in the sliding guide 68, The anti-departure ring-shaped band 62 is welded to be connected to each other through the through-hole 68 without being directly connected thereto. In addition, the anti-departure ring-shaped band 62 is slid freely during thermal expansion and is not bent or deformed. The shaft is formed to provide an effect of preventing breakage of the heat insulating material 30. [

Next, the thermal insulation method of the pyrolysis drum 1 using the pyrolytic drum thermal insulation structure of the rotary incinerator according to the present invention will be described.

1) Insulating material installation process (S100)

The present invention is characterized in that a plurality of heat insulating members 30 surrounding the outer circumferential surface of the thermal cracking drum 1 are provided between the insulating member fixing bars 20 and a plurality of binding bands 31 So that the heat insulating material 30 can be retained without being separated.

2) Nonwoven fabric setting process (S200)

When the first heat insulation of the heat insulating material 30 is completed, the outer surface of the heat insulating material 30 is wrapped with the ceramic nonwoven fabric 35, and a plurality of binding bands 31 are bent on the outer surface of the nonwoven fabric 35, .

The reason for providing such a nonwoven fabric 35 is to cover the heat insulating material 30 as a whole and to press the heat insulating material 30 to reinforce the binding of the heat insulating material 30 to prevent the heat insulating material 30 from breaking, And is sandwiched between the heat insulating materials 30 which are provided on the outer surface of the heat insulating material 30 in multiple layers so as to prevent slippage of the heat insulating materials 30 to ensure more robust workability.

3) Repeated installation process of insulating material and nonwoven fabric (S300)

Although the first heat insulation can be performed through a single operation, the heat insulation installation step (S100) and the nonwoven fabric installation step (S200) can be performed repeatedly a plurality of times in accordance with the insulation thickness design for more reliable insulation performance, The outer diameter of the nonwoven fabric 35 may be the same as that of the outer ring fixing ring 10 as shown in Fig. 9 so that the outer sheath 40 can be smoothly fixed to the outer ring fixing ring 10 in a state of wrapping the outer surface of the nonwoven fabric 35 .

4) Cladding material finishing process (S400)

When the warming operation is completed, the outer surface of the nonwoven fabric 35 is wrapped with a sheathing material 40 such as a seat and both sides of the sheathing material 40 pass through the sheathing ring 10 with a piece 42 using an impact driver, And the outer surface of the jacket 40 is bent at intervals by a plurality of coupling bands 41 and the coupling bands 41 are fixed by passing through the pieces 42 to prevent loosening of the coupling bands 41. [ Thereby preventing the outer sheath 40 from deviating more effectively.

The covering material 40 is divided into a plurality of pieces along the longitudinal direction, and the covering material 40 divided into a plurality of pieces is provided so as to overlap each other. The overlapping parts are integrally fixed to each other with the mutual pieces 42, So that the overlapped outer material 40 can be freely slid along the longitudinal direction even if thermal expansion occurs.

 The covering material 40 is divided into a plurality of pieces along the circumferential direction and the plurality of divided covering materials 40 are provided so that adjacent portions overlap each other. The overlapping portions are integrally fixed to each other with the pair of pieces 42 The overlapped one portion is not fixed to the piece 42 but is maintained in the overlapped state, so that the overlapped covering material 40 can slide along the circumferential direction even if thermal expansion occurs.

5) Side Insulating Material Installation Process (S500)

The present process is for inserting the side surface of the thermal decomposition drum 1 and is provided with a side insulator 63 attached to a side of the side insulator fixing bar 61 attached to the side of the thermal decomposition drum 1 64).

The outer surface of the side surface heat insulating material 64 is bent so as to surround the anti-departure band 65 along the circumferential direction, thereby preventing the side surface heat insulating material 64 from being released to the outside even if centrifugal force acts upon rotation of the thermal decomposition drum 1.

According to the present invention, even if thermal expansion occurs during the operation of the thermal decomposition drum 1, it is possible to prevent damage to the casing 40 and suppress the occurrence of unexpected operation stoppage of the thermal decomposition drum 1, And provides a special effect of exhibiting the smooth incineration performance of the garbage.

L, L1: interval 1: pyrolysis drum
10: exterior material fixing ring 20: insulating material fixing bar
30: Insulating material 31, 41: Coupling band
35: Non-woven fabric 40: Outer material
42: piece 43: incision
60: Side heat insulating structure 61: Side heat insulating material fixing bar
62: anti-departure circular band 63:
64: side insulator 65: separation prevention band
66: scattering prevention plate 67:
68: Sliding guide

Claims (10)

A plurality of outer casing fixing rings 10 attached to the outer periphery of the thermal cracking drum 1 so as to surround the outer casing at intervals along the longitudinal direction;
A plurality of insulating material fixing bars 20 radially attached between the outer ring fixing rings 10 along the longitudinal direction;
A heat insulating material 30 disposed between the heat insulating material fixing bars 20 so as to surround the outer circumferential surface of the thermal cracking drum 1;
And a covering material 40 which is fixed to the covering material fixing ring 10 while surrounding the outer surface of the insulating material 30;
The casing member 40 disposed between the casing member fixing rings 10 is divided into a plurality of parts along the longitudinal direction. The casing members 40, which are divided into a plurality of parts, are overlapped with each other, (42), but not overlapped to allow sliding due to thermal expansion, is not fixed by the piece (42). ≪ Desc / Clms Page number 13 >
The method according to claim 1,
The heat insulating material fixing bar 20 is formed of a T-shaped section steel to press the outer surface of the heat insulating material 30 to prevent detachment of the heat insulating material 30. The outer casing holding ring 10 has a T- , And the outer casing (40) can be fixed to the outer circumferential surface of the pyrolytic drum by a piece (42).
The method according to claim 1,
The heat insulating material fixing bar 20 and the outer casing fixing ring 10 are disposed to be spaced apart from each other to prevent warping due to collision due to thermal expansion. The casing fixing ring 10 is divided into a plurality of parts in the circumferential direction, Wherein the outer ring fixing rings 10 are disposed at a distance from each other to prevent warping due to thermal expansion.
delete The method according to claim 1,
The outer casing 40 is divided into a plurality of parts along the circumferential direction and the outer casing members 40 divided into a plurality of parts are overlapped with each other and the overlapping parts are integrally fixed by the mutual pieces 42, Wherein a portion overlapped to enable the pyrolytic thermal insulation structure is not fixed to the piece (42).
The method according to claim 1,
A plurality of side insulating members 61 are attached to the side of the thermal decomposition drum 1 in a radial manner and a separation preventing circular band 62 having diameters different from each other concentrically on the outer surface of the side insulating member fixing bar 61, And a side insulator 64 is inserted into each of the insulator insert portions 63 formed between the side insulator fixing bars 61 and the side insulated insulators 64 are formed on the outer periphery of the side insulator 64 along the circumferential direction And a side heat insulation structure (60) for preventing the release of the side heat insulation material (64) by bending the release prevention band (65) so as to surround the heat insulation structure (60).
The thermal insulation method using the pyrolytic drum thermal insulation structure of the rotary incinerator according to claim 1,
A step (S100) of inserting a heat insulating material (30) for covering the outer circumferential surface of the thermal cracking drum (1) between the heat insulating material fixing bars (20);
A nonwoven fabric setting step (S200) of wrapping the outer surface of the heat insulating material (30) with a nonwoven fabric (35);
And a cover material finishing step (S400) of fixing both sides of the casing material 40 surrounding the outer surface of the nonwoven fabric 35 to the casing material fixing ring 10 by means of the pieces 42. [ Thermal Insulation Method of Pyrolysis Drum Using.
8. The method of claim 7,
Wherein a binding band (31) (41) is reinforced by binding the outer surface of the heat insulating material (30), the outer surface of the nonwoven fabric (35) and the outer surface of the casing (40) to bond the thermocompression bonding material. Thermal insulation method of pyrolysis drum.
8. The method of claim 7,
The thermal insulation installation process (S100) and the nonwoven fabric installation process (S200) are repeatedly performed a plurality of times in succession in accordance with the design of the thermal insulation thickness. The thermal insulation construction method of a pyrolytic drum using the pyrolytic thermal insulation structure of a rotary incinerator.
8. The method of claim 7,
A side heat insulating material 64 is inserted into the heat insulating material inserting part 63 formed between the side insulated material fixing bars 61 attached to the side faces of the thermal decomposition drum 1, (S500) for preventing the side heat insulation material (64) from being released by bending the release preventing band (65) along the direction of the heat dissipation drum (50). The pyrolysis drum Thermal insulation method.

Images