JPH08285257A - Incineration furnace - Google Patents

Abstract

PURPOSE: To prevent small sized waste from dropping on the bottom of a primary combustion chamber, or from being clogged in a ventilation hole, and incinerate the small sized waste by burning. CONSTITUTION: A plurality of grates 6 are arranged in a primary combustion chamber 2 of an incineration furnace 1 in such a manner that they may be partially overlapped, when being seen from the top, into a step form while placing intervals in the vertical direction. At the same time, the uppermost step side of the stair-shaped grates 6 is arranged under a charging port 4, and an injection port 7a of a primary burner 7 which burns the primary combustion chamber 2 is formed on a side surface of the primary combustion chamber 2 under the uppermost step side of the stair-shaped grates 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator which burns and incinerates waste, and more particularly to an incinerator which burns and incinerates small waste such as a needle for medical waste. Is.

[0002]

2. Description of the Related Art Conventionally, in an incinerator that burns and incinerates waste, a flat vent plate is disposed below the combustion chamber that burns the waste combustor, and below the vent plate. A space for supplying air to the combustion chamber is secured,
The ventilation plate prevents the combustion products from falling into the space for supplying the combustion air below, so that the combustion air is evenly distributed in the combustion chamber.

[0003]

However, when the waste combustion product is small, the waste combustion product falls from the ventilation holes of the flat vent plate into the space for supplying combustion air below the combustion chamber. The waste combustion material that accumulates and accumulates when it falls down closes the space for supplying combustion air below the combustion chamber, and the combustion air does not evenly spread throughout the combustion chamber. There was the inconvenience that it was not possible to carry out various combustions.

The present invention has been made in view of the above problems and was devised to solve the problems. The purpose of the present invention is that small wastes fall to the bottom of the primary combustion chamber, An object of the present invention is to provide an incinerator capable of preventing clogging of ventilation holes and burning small wastes for incineration.

[0005]

In order to achieve the above-mentioned object, the present invention has a plurality of rostruls vertically spaced inside the primary combustion chamber of an incinerator and partially overlapping in plan view. In addition to arranging in a staircase shape, the uppermost stage side of the staircase-shaped lossr is arranged below the charging port, and the injection port of the primary burner that burns the primary combustion chamber The structure is formed on the side surface of the combustion chamber.

[0006] Here, as a preferred mode, it is preferable that the bottom surface of the primary combustion chamber below the staircase-shaped roster is formed into an inclined surface that is inclined downward in the same direction as the downside of the staircase of the roster.

[0007]

The present invention having the above-described structure operates as follows. In other words, since the upper and lower rustles partially overlap when viewed from the top, the small waste that has been injected from the input port at this partially overlapping portion acts to prevent the small waste from dropping downwards from the gaps between the respective rustles. However, the hot flame injected from the injection port of the primary burner blows through the gap between the upper and lower rustles, and the waste accumulated on the surface of each rustle is blown to the waste combustion side, and the gap between the upper and lower rustles becomes waste. It acts to prevent clogging.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described more concretely with reference to the embodiments shown in the drawings. Here, FIG. 1 is a side sectional view of the incinerator, and FIG. 2 is a partial front sectional view of the incinerator.

In the figure, an incinerator 1 is a device that burns and incinerates small wastes such as injection needles as medical wastes, and is incomplete in a primary combustion chamber 2 and a primary combustion chamber 2 that burn the wastes. It is composed of a secondary combustion chamber 3 for completely burning what has been burned.

The primary combustion chamber 2 of the incinerator 1 is a chamber for burning a small amount of waste, and its periphery is made of a refractory material. A charging port 4 for charging the waste into the chamber is formed on the upper side surface of the primary combustion chamber 2, and a charging door 4a is attached to the charging port 4. A heat shield plate is attached to the inner surface of the closing door 4a. An inspection port 5 for maintenance and inspection of the primary combustion chamber 2 is formed on the lower side surface of the primary combustion chamber 2 opposite to the charging port 4, and this inspection port 5 has an inspection door 5
a is attached.

An inspection port 5 from directly below the charging port 4 to the opposite side from the middle part to the lower side inside the primary combustion chamber 2.
A plurality of rostruls 6 are arranged in a so-called staircase pattern facing downward toward the side. Each of the rostruts 6 has a plate-like shape, and the left and right ends thereof extend in the width direction of the primary combustion chamber 2. The grate 6 is made of a refractory material, for example refractory brick.

Each of the plurality of stalls 6 arranged in a staircase
Are arranged with a predetermined gap in the vertical direction, and the upper and lower gaps function as ventilation holes, through which combustion gas and combustion air injected from the primary burner 7 described later pass. The waste in the primary combustion chamber 2 is burned. The distance between the upper and lower sides of the grate 6 is, for example, about 35 mm.

The plurality of stairs 6 arranged in a staircase are partially overlapped with each other when viewed in plan, that is, the front side of the upper rostle 6 and the rear side of the lower rostle 6 overlap. Since they are arranged in a staircase in such a state and partially overlap with each other when seen in a plan view, it is possible to prevent small wastes input from the input port 4 from falling downward between the respective rostruts 6. Has been.

Each of the plurality of stalls 6 arranged in a staircase pattern
The front side is formed on an inclined surface having an angle of, for example, 45 °, and the waste introduced from the input port 4 descends toward the front side of each staircase-shaped roster 6 and the rear part of the rostrut 6 is formed. It is prevented from moving to the side, and is prevented from falling downward from the gap on the rear side of the grate 6. In addition, the waste that has been input through the input port 4 moves down the stairs-shaped rustles 6 to prevent the waste from entering the inner side of the primary combustion chamber 2 and accumulating in the vicinity of the input port 4.

Each of the plurality of stalls 6 arranged in a staircase
The uppermost roster 6 is located directly below the inlet 4, and the lowermost roster 6 ends slightly before the inspection port 5. A lower grate 6a is provided below the lowermost grate 6 in parallel with the lower grate 6 in the width direction of the primary combustion chamber 2 with a vertical gap.

A plurality of sub-lostles 6b are arranged between the lower roster 6a and directly below the inspection port 5 in a direction perpendicular to the stairs-shaped roster 6. The plurality of sub-lostles 6b are arranged with a gap therebetween in the width direction of the primary combustion chamber 2. Further, each sub-loster 6b is arranged so as to be inclined slightly downward toward the lower roster 6a.

The plurality of stalls 6 which are arranged in a step-like manner and are partially spaced from each other in the vertical direction and which partially overlap each other when viewed from the plane, serve as a conventional ventilation plate and divide the inside of the primary combustion chamber 2 into upper and lower parts. The upper side divided into two is a chamber for burning small waste, and the lower side is a flow chamber 2a for sending combustion flame and combustion air to the chamber for burning upper waste.

An injection port 7a of the primary burner 7 is formed on the lower side of the primary combustion chamber 2, that is, on the side surface of the lower flow chamber 2a which is bisected by a plurality of stalls 6 arranged in a staircase pattern. The injection port 7a is formed on the side surface of the primary combustion chamber 2 on the same side as the injection port 4. The position of the injection port 7a is slightly lower than the middle of the stairs of the plurality of stouts 6 arranged in a staircase. The primary burner 7 is installed over the outer side surface of the primary combustion chamber 2 outside the injection port 7a, and the outside thereof is covered.

The bottom surface of the lower side of the primary combustion chamber 2, that is, the bottom surface of the flow chamber 2a is formed so as to have a high slope on the side where the injection port 7a is formed and a slope that is inclined downward toward the inspection port 5 side and is lowered. Its tip side is formed in a horizontal plane. It is lowered toward the same direction as the plurality of stalls 6 arranged in the upper step. An ash discharge port 2b for discharging combustion ash burned in the primary combustion chamber 2 is formed on a side surface of the horizontal plane. A discharge door 2c is attached to the ash discharge port 2b.

Since the bottom surface of the primary combustion chamber 2 on the lower side, that is, the bottom surface of the flow chamber 2a is an inclined surface, waste may fall through the gaps between the plurality of stalls 6 arranged in a staircase. However, since it rolls down on this inclined surface and reaches the horizontal surface on the tip side, it does not hinder the flow of the hot flame or combustion air injected from the primary burner 7. A part of the hot flame injected from the injection port 7a passes through the gaps between the stair-like rostruts 6 while traveling downwardly on the inclined surface and the waste flows into the upper chamber into which it is thrown away. Burn things.

The ceiling of the primary combustion chamber 2 near the inlet 4 is open, and the secondary combustion chamber 3 is formed on the upper side of the opening. An injection port 8a of the secondary burner 8 is formed on the side surface of the secondary combustion chamber 3, and the injection port 8a is formed on the side surface of the secondary combustion chamber 3 on the same side as the injection port 4. The secondary burner 8 is installed so as to project to the outer side surface of the secondary combustion chamber 3 outside the injection port 8a, and its outside is covered.

The inside of the secondary combustion chamber 3 is formed in a laterally cylindrical shape, and the inside thereof has an upper semi-circular primary baffle 3a that shields the upper half and a lower half that shields the lower half. Circular secondary baffles 3b are mounted separately. A chute 9 is formed on the downstream side of the secondary combustion chamber 3,
A square tertiary baffle 3c is mounted downward on the ceiling side of the chute 9 on the downstream side of the secondary combustion chamber 3, and a chimney 10 is provided on the upper end of the chute 9 on the downstream side of the tertiary baffle 3c.
Are formed. An ash discharge port 9a is formed at the lower end of the chute 9, and a discharge door 9b is attached to the ash discharge port 9a.

Next, the operation based on the configuration of the above embodiment will be described below. The input door 4a of the input port 4 of the incinerator 1 is opened, and a small waste such as an injection needle as a medical waste is charged into the primary combustion chamber 2. The small wastes thrown into the primary combustion chamber 2 descend through the plurality of stalls 6 arranged in a staircase, and some of the wastes reach the inner side of the primary combustion chamber 2.

In this case, each of the plurality of stairs 6 arranged in a staircase is in a state in which the respective rostles 6 partially overlap each other when seen from a plane, that is, the front side of the upper rostle 6 and the rear part of the lower rostle 6. Since the wastes are arranged in a step-like manner such that the sides overlap, it is possible to prevent small wastes input from the input port 4 from falling downward from between the rostruls 6.

In addition, even if the waste falls through the gaps between the plurality of stalls 6 arranged in a staircase, the bottom surface of the primary combustion chamber 2, that is, the bottom surface of the flow chamber 2a becomes an inclined surface. Therefore, the waste that has fallen from the gap of the roster 6 rolls down this inclined surface, reaches the horizontal surface on the tip side, and impedes the flow of the hot flame injected from the primary burner 7 and the combustion air. Absent.

After charging the waste, the primary burner 7 and the secondary burner 8 are burned. The hot flame of the primary burner 7 is injected from the injection port 7a into the flow chamber 2a on the lower side of the primary combustion chamber 2. A part of the injected hot flame goes down the inclined surface of the flow chamber 2a to reach the horizontal surface at the tip and burns the waste accumulated on the horizontal surface. In addition, a part of the injected hot flame advances horizontally and obliquely upward and passes through the gaps between the plurality of stalls 6 arranged in a staircase, and the waste that has been injected into the primary combustion chamber 2 above it is discharged. To burn.

At this time, the waste collected on the surfaces of the plurality of stairs 6 arranged in a staircase is blown off toward the waste combustion side by the hot flame passing through the gaps between the upper and lower stalls 6, and becomes a staircase. The gap between the upper and lower sides of each of the disposed rostruts 6 is prevented from being blocked by the thrown waste.
This prevents the air required for combustion from passing through the gaps between the upper and lower portions of the rostrut 6, and the combustion air flows in through the gaps of the plurality of stalls 6 arranged in a staircase pattern. Then, the air necessary for combustion is sufficiently supplied, so that the incomplete combustion state is avoided.

The incomplete combustion state in the primary combustion chamber 2 is sent to the upper secondary combustion chamber 3 and is completely combusted by the hot flame injected from the secondary burner 8 while passing through the secondary combustion chamber 3. . Then, the completely combusted gas passes through the chute 9 and is discharged from the chimney 10. Further, the combustion ash contained in the completely combusted gas is separated and dropped by the chute 9 and collected at the bottom of the chute 9. The combustion ash accumulated at the bottom of the chute 9 is discharged to the outside by opening the discharge door 9b of the ash discharge port 9a.

The present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

[0030]

As is apparent from the above description, according to the incinerator according to the invention of claim 1, a plurality of rostruls are vertically spaced from each other in a plane in the primary combustion chamber of the incinerator. By arranging in a staircase shape that partially overlaps when viewed, and by arranging the uppermost stage side of the staircase-shaped loss stoves below the charging port, the upper and lower stirrups partially overlap when viewed from a plane. It is possible to prevent small wastes that have been input from the input ports from overlapping in some portions from falling downward from the gaps between the respective rostruls. Moreover, by forming the injection port of the primary burner that burns the primary combustion chamber on the side surface of the primary combustion chamber below the uppermost stage side of the staircase-shaped loss stole, the hot flame injected from the injection port of the primary burner moves up and down. Since it blows through the gap between the rostles, the waste accumulated on the surface of each roster can be blown to the waste combustion side, and it is possible to prevent the gap between the upper and lower rosters from being clogged with waste. Combustion air can be sufficiently supplied into the primary combustion chamber by passing through the gap of the grate.

According to the second aspect of the present invention, when the bottom surface of the primary combustion chamber below the staircase-shaped roster is formed as an inclined surface which is inclined downward in the same direction as the downside of the staircase of the roster. Even if the waste falls through the gaps between the stairs arranged in a staircase, the waste that falls through the gaps in the stall rolls down this slope and prevents the waste from accumulating on the slope. By doing so, it is possible to prevent the waste that has fallen from the gap of the rostrur from interfering with the flow of the hot flame injected from the primary burner and the combustion air, and other extremely beneficial effects. Is.

[Brief description of drawings]

FIG. 1 is a side sectional view of an incinerator showing an embodiment of the present invention.

FIG. 2 is a partial front sectional view of an incinerator showing an embodiment of the present invention.

[Explanation of symbols]

 1 Incinerator 5a Inspection Door 2 Primary Combustion Chamber 6 Lostor 2a Distribution Chamber 6a Lower Lostor 2b Ash Discharge Port 6b Secondary Lostor 2c Discharge Door 7 Primary Burner 3 Secondary Combustion Chamber 7a Injection Port 3a Primary Baffle 8 Secondary Burner 3b Secondary Baffle 8a Injection port 3c Tertiary baffle 9 Chute 4 Input port 9a Ash discharge port 4a Input door 9b Discharge door 5 Inspection port 10 Chimney

Claims (2)

[Claims] 1. The primary combustion chamber of an incinerator is provided with a plurality of rostles arranged in a stepwise pattern with a vertical interval and partially overlapping in plan view, and the uppermost step side of the staircase-shaped roster is arranged. An incinerator characterized in that an injection port of a primary burner which is arranged below the charging port and burns the primary combustion chamber is formed on a side surface of the primary combustion chamber below the uppermost stage side of the staircase-shaped loss stole. 2. The incinerator according to claim 1, wherein a bottom surface of the primary combustion chamber located below the staircase-shaped roster is formed into an inclined surface which is inclined downward in the same direction as the downside of the staircase of the rostrut.