JPH0518520A - Incinerator - Google Patents

Abstract

PURPOSE:To burn a resin melted on an object to be burned on a rack and an object to be burned on the rack efficiently by arranging the rack in a combustion chamber while a plurality of pipes to force air are provided below the rack. CONSTITUTION:For example, a medical waste containing an injection needle mixed with a resin is put on a rack 14 of a combustion chamber 13 to ignite and a blower and a burner are started. Air for combustion is forced under the rack 14 through jetting ports 20 of two pipes 19 and as parts of paper, cloth, resin cotton and resin in the waste burn, the resin melts by heat generated by the burning and flows under the rack 14. The resin flowing under the rack 14 is burned forcibly contacting two whirling air flows which are formed by the air forced from the pipes 19 under the rack 14 and burns more efficiently.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator for efficiently burning resin, or incineration materials such as paper, cloth and cotton mixed with resin.

[0002]

2. Description of the Related Art As a conventional technique, the Japanese Utility Model Laid-Open No. 55-514
The technique disclosed in Japanese Patent Publication No. 60 is known. This technology is an incinerator that burns polymer waste, etc., with a basket-shaped storage unit for storing waste in a cylindrical pre-combustion chamber, and multiple air ejection holes provided on the inner wall of the pre-combustion chamber. A technique is disclosed in which more combustion air is pumped to generate one swirling combustion flow in the pre-combustion chamber to incompletely combust the polymer waste in the squirrel cage.

[0003]

However, in the above technique, since a plurality of air ejection holes are provided in the inner wall of the pre-combustion chamber, the manufacturing is difficult and the manufacturing cost is high. Further, since there is only one swirl combustion flow, the contact rate between air and incinerated matter is low, and the combustion efficiency of waste is not good.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide an incinerator having a high combustion efficiency and a low cost with a simple structure.

[0005]

The incinerator of the present invention then employs technical means. The incinerator is provided with a combustion chamber, at least the bottom of which draws a downwardly convex arc, a shelf in which the incinerator is placed, and a plurality of pipes arranged opposite each other under the shelf. Combustion air is pressure-fed from the ejection holes formed on the side surfaces of the plurality of pipes, and 2
Combustion air supply means for generating two swirling combustion streams. And the said shelf is equipped with the some communication means which connects the upper part and the lower part of a shelf.

[0006]

The resin or the incinerated material in which the resin is mixed is put on the shelf in the combustion chamber to ignite the incinerated material.
Then, by injecting combustion air into the opposing pipes, the incinerators mounted on the shelves are burned. Combustion of the incineration melts some of the resin in the incineration and flows to the bottom of the combustion chamber under the shelves. On the other hand, two swirl flows are generated under the shelf by the air pumped from the pipe. Then, the melted resin introduced under the shelf is combusted by the air supplied under the shelf, and two swirling combustion flows are generated by the combustion of the resin under the shelf. The two combustion streams then efficiently contact the air and the melted resin, causing the resin to efficiently burn under the shelf.

[0007]

The incinerator of the present invention has a simple structure in which a shelf is arranged in the combustion chamber and a plurality of pipes for pumping air are provided in the lower part of the shelf. It is possible to efficiently burn the resin melted in. As described above, since the incinerator has a simple structure, it is possible to inexpensively manufacture an incinerator having a high combustion efficiency that burns the resin or the incineration material containing the resin.

[0008]

EXAMPLE Next, the incinerator of the present invention will be explained based on an example shown in the drawings. [Structure of Embodiment] FIGS. 1 to 3 show an embodiment of the present invention. FIG. 1 is a sectional view of an incinerator, and FIG. 2 is AA of FIG.
FIG. 3 is a sectional view taken along the line BB, and FIG. 3 is a sectional view taken along the line BB in FIG. The incinerator 1 shown in the present embodiment is configured by combining a lower part 2 and an upper part 3. The lower part 2 has a main combustion part 4 in which the incinerated matter is combusted and a combustion flowing out from the main combustion part 4. And a dust collector 5 for removing dust in the exhaust gas. Further, the upper part 3 is provided with a secondary combustion part 6 for completely burning the smoke that has passed through the dust collecting part 5, and a cooling tank 7 for suppressing the temperature of the incinerator 1 from becoming high.

The lower portion 2 is provided with legs 9 in a container 8 made of a semi-cylindrical metal (for example, an iron-based steel plate), and a refractory brick 10 is provided in the container 8.
The main combustion part 4 and the dust collecting part 5 are divided by a partition wall 11 made of a refractory brick 10. An opening 12 is formed in the partition wall 11, and the combustion exhaust gas generated in the combustion section flows into the dust collecting section 5 through the opening 12.

The main combustion section 4 adopts the present invention,
The combustion chamber 13 into which the incinerated matter is put, the shelf 14 in which the incinerated matter is mounted, and the combustion air supply means 15 for sending combustion air under the shelf 14 are provided. The combustion chamber 13 has a semicircular bottom that draws an arc in which the refractory bricks 10 are tightly packed, and the upper part thereof is hermetically shielded from the outside by the secondary combustion part 6 and the cooling tank 7 which constitute the upper part 3. A lid 16 that can be opened and closed is provided on the side surface of the combustion chamber 13.
Is provided so that the lid 16 can be opened and the incinerated matter can be put into the combustion chamber 13. The shelf 14 is mounted in a notch at the top of a stand 17 provided in the combustion chamber 13. In this embodiment, the stand 17 is the combustion chamber 1.
There are four in 3. The shelf 14 of the present embodiment is provided with a plurality of refractory rods 18 joined to each other, and the joining intervals of the rods 18 are partially separated in order to communicate the upper side and the lower side of the shelf 14. Yes (communication means). The combustion air supply means 15 is provided with two pipes 19 arranged under the shelf 14 and at a position slightly apart from the bottom in the combustion chamber 13 so as to face each other. These two pipes 19 also stand 17
A large number of ejection holes 20 are provided on the opposite side surfaces of both pipes 19, which are mounted in the notches at the top of the pipe. The ejection holes 20 pump air for combustion into the combustion chamber 13 to generate two swirling combustion flows under the shelf 14, and the ejection holes 20 generate two swirling combustion flows. Therefore, it is provided so as to face the inside, the inside lower, and the inside upper of the combustion chamber 13. A blower (not shown) is connected to the two pipes 19, and air for combustion is pressure-fed into the combustion chamber 13 through the ejection holes 20 by the operation of the blower.

The dust collecting portion 5 is a cyclone dust collector which gives a swirl flow to the exhaust gas flowing in through the opening 12 of the partition wall 11 to separate the dust from the smoke by the centrifugal force. Inside the dust chamber 21, there is provided a baffle plate 22 that gives a swirl flow to the exhaust gas flowing in through the opening 12. A lid 23 that can be opened and closed is also provided on the side surface of the dust collection chamber 21, and the lid 23 is opened so that the dust collected under the dust collection chamber 21 can be taken out.

The upper part 3 is formed by joining a heat resistant metal (for example, stainless steel), and is covered with the container 8 of the lower part 2,
A lid body 2 that forms the upper part of the combustion chamber 13 and forms a convex arc
4 and a water jacket 25 that covers the lid 24.

The secondary combustion section 6 includes a lid body 24 and the lid body 2
4 and a secondary duct 26 whose bottom is joined to form a downwardly convex arc, and a secondary combustion chamber 27 is formed therein. The secondary combustion section 6 has one end that opens at the upper portion 3 of the dust collecting section 5 and the other end that communicates with the outside through an exhaust duct 28 that is formed in the central portion of the lid. And the secondary combustion chamber 27
Is in contact with the upper portion of the combustion chamber 13 via the secondary duct 26, and is provided so as to receive the combustion heat of the combustion chamber 13. In addition, at the end of the secondary combustion section 6 on the smoke inflow side,
A burner (not shown) for completely burning smoke is provided in the secondary combustion chamber 27.

[Operation of Embodiment] Next, the operation of the above embodiment will be briefly described. On the shelf 14 of the combustion chamber, a medical waste containing a resin-mixed needle, for example, is placed, and the waste is ignited manually or by a burner (not shown) to start the blower and the burner. By the operation of the blower, the air for combustion is pressure-fed under the shelf 14 through the ejection holes 20 of the two pipes 19. The pumped air burns paper, cloth, absorbent cotton, and a part of the resin in the medical waste, and the heat generated by the combustion melts the resin and causes it to flow under the shelf 14. The resin flowing under the shelf 14 is forcibly combusted by contacting two swirling air streams formed by the air pumped from the pipe 19 under the shelf 14 to generate a combustion stream riding on the air stream. Further, the combustion gas of the resin contained in the combustion flow has a high contact rate with the air, so that it is more efficiently combusted. The exhaust gas of the incineration product compulsorily combusted in the combustion chamber 13 flows into the dust collecting chamber 21 through the opening 12 of the partition wall 11, and the dust flowing into the dust collecting chamber 21 is removed in the dust collecting chamber 21. Be done. And the dust collection chamber 2
The exhaust gas that has passed 1 is the secondary combustion chamber 2 of the secondary combustion section 6.
7 and is burned again by the burner. This 2
Since the secondary combustion chamber 27 is provided so as to receive the heat of the combustion chamber 13, the exhaust gas flowing into the secondary combustion chamber 27 is completely combusted. As a result, even if the incinerated matter contains the resin, the black smoke is not discharged from the exhaust duct 28 of the secondary combustion unit 6, but the completely burned colorless smoke is discharged.

[Effects of the Embodiment] The incinerator 1 of this embodiment is
A shelf 14 is arranged in the combustion chamber 13, and 2 is placed under the shelf 14.
With a simple structure provided with a pneumatic pipe 19 of a book, it is possible to incinerate a resin-containing incinerator such as medical waste with colorless smoke. That is, the incinerator 1 for incinerating the incineration material containing the resin can be manufactured and provided at low cost.

[Modification] In the above embodiment, an example in which two pipes are used has been shown, but if two swirl flows can be generated under the shelf, such as four pipes, six pipes, etc. The number of Further, although the example in which the ejection holes are formed by a large number of holes is shown, they may be formed by slits. Although the ejection hole is shown as an example of facing inward, the lower side, the upper side, the outside,
Alternatively, as long as two swirling flows can be generated under the shelf, for example, the pipes may be provided all around the pipe, the pipes may be provided in any way. Furthermore, although an example in which a plurality of rods are joined to create a shelf has been shown, a shelf can be created by other configurations, such as forming a shelf by a heat-resistant plate with a plurality of holes (communication means) opened. good.

[Brief description of drawings]

FIG. 1 is a sectional view of an incinerator.

FIG. 2 is a sectional view taken along the line AA of FIG.

3 is a sectional view taken along the line BB of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Incinerator 13 Combustion chamber 14 Shelf 15 Combustion air supply means 19 Pipe 20 Spout hole

Claims (1)

Claims: 1. A combustion chamber, at least the bottom of which draws a downwardly convex arc, a shelf in which the incinerator is placed, and a combustion chamber which is placed opposite to each other under the shelf. A plurality of pipes, and a combustion air supply means for pumping combustion air through ejection holes formed on the side surfaces of the plurality of pipes to generate two swirling combustion flows under the shelf. An incinerator in which the shelf includes a plurality of communication means that communicate between the upper side and the lower side of the shelf.