JPS627445B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION It is generally accepted that garbage incinerators generate foul-smelling black smoke. Since the generation of smoke depends on incomplete combustion, there have been attempts at garbage incinerators that supply combustion air in an amount several times the theoretical amount of air, but it has not been possible to make garbage incineration smokeless. What I gained has not yet appeared. The reason for this is that the excessively supplied air does not come into contact with the burning area to completely burn it, but instead ignites the garbage near the burning area and causes it to burn incompletely. This will only help, and will therefore emit more and more smoke. Therefore, in order to continue combustion smokelessly, by extracting the combustion waste gas from the part where combustion is occurring, the necessary combustion air is naturally introduced into the combustion part, and the combustion part is stopped. He thought that the necessary air should be supplied only to the burning area to cause complete combustion, without spreading it out blindly, and as a method to do so, the combustion gas generated from the burning area should be If they are removed one by one, the pressure in those areas will be reduced.
In this case, if an outside air intake port is provided in the furnace wall, the required amount of air will be automatically sucked through the outside air intake port.

Next, a specific example of a furnace based on this combustion principle will be explained with reference to the drawings.A jacket 20 of an appropriate width is attached surrounding the outer periphery near the top of the outer casing 10.
A smoke collection box 30 having a secondary combustion air inlet 31 is attached to the rear half of the upper surface of the top plate 21 of the outer box 10, and a position facing the top opening end of the smoke collection pipe 26, which will be described later, is attached to the top surface of the smoke collection box 30. A chimney 40 is erected at the top of the chimney, a waste gas cleaning device 41 is attached to the top of the chimney, and an inner casing 22 is hung concentrically from the center of the top plate 21 inside the outer casing 10.
A mesh cylinder 23 of the same diameter is suspended from the lower part of the inner box 22, and a combustible waste supply port 24 is provided in the front half of the top plate 21 of the outer casing 10, which can be opened and closed with a combustible waste supply lid 25. The top plate 21 of the inner box 22 is punched out so that the top part protrudes into the smoke collection box 30 and the mesh tube 23 is covered.
A smoke collection pipe 26 with a large number of ventilation holes 27 is supported and attached to the top plate 21 in the lower half of the outer casing 10, and a small hole (approximately 25 mm diameter) is provided at an appropriate position in the lower part of the outer casing 10 as an air inlet 11 for primary combustion. A small hole 12 or 12' is bored in the upper part as a steam inlet, and a cut-out point 28 is made in the outer wall of the jacket case 20.
Cover this and attach the water injection box 29, open the garbage supply lid 25 of the furnace body made in this way, put the garbage into the mesh tube 23 at the bottom of the inner box 22, and open the combustion port door 14 on the front of the bottom of the outer box 10. Then, the fire is ignited from the fire port 13. Ignition can be done by inserting a pilot flame under the garbage thrown into the mesh tube 23, or by placing a pilot flame from the fire opening 13 at the bottom of the screen tube 23 in advance and collecting garbage on top of it. Gasifies and ignites easily. When ignited, smoke is emitted, which rises through the numerous ventilation holes 27 drilled in the lower body wall of the smoke collection pipe 26 and mixes with air from the secondary combustion air inlet 31, resulting in secondary combustion. I will do it. At this time, the mesh tube 23 is
The primary air flowing in from the primary combustion air intake port 11 is introduced into the inner casing 22, contributing to the easy gasification and combustion of the combustion dust within the inner casing 22. This waste air is drawn by the suction force of the chimney 40 and released into the atmosphere through the waste gas cleaning device 41. By doing so, no smoke or odor is emitted even when rubber tires are incinerated. As a result, we were able to obtain an effect that could be treated with

That is, in the present invention, only the amount of air corresponding to the waste gas that can be extracted through the smoke collection pipe 26 (the primary combustion air inlet 1 with an extremely small opening area) is used.
The amount of air that enters from 1 is sufficient) and the generation of excess combustion gas is suppressed by not supplying excess air for combustion. Furthermore, outer box 10 and inner box 22
Because it has a two-layer structure, the inner box 22 functions as a combustion control board, preventing over-combustion of the waste to be burned, and conversely, when damp material is thrown in, it dries it and prevents it from carbonizing. let Therefore, smoke collection pipe 2
6 and the inner box 22 have a remarkable effect of preventing overburning and excessive rise in temperature, and maintaining stable combustion in a temperature range that does not cause burnout of the furnace.
Then, the minimum amount of combustion gas generated is mixed with water vapor to form a moist combustion gas, which is then passed through a cleaning device 41 installed at the top of the chimney to remove SO ₂ and CO ₂ from the waste gas.
After removing the combustion gases, it is released into the atmosphere as colorless and odorless clean exhaust gas.

[Brief explanation of the drawing]

Figure 1 is an external front view of the garbage incinerator of the present invention, Figure 2
The figure is the plan view of Figure 1, and Figure 3 is the 3-3 of Figure 2.
4 is a front sectional view along line 3, and FIG. 4 is a right side view of FIG. 1. 10...Outer box, 11...Air inlet for primary combustion,
12, 12'... Steam inlet hole, 13... Fire opening, 14... Fire opening door, 20... Jacket outer box, 21... Top plate, 22... Inner box, 23... Screen tube, 24... ...Garbage supply port, 25...Garbage supply lid,
26...Smoke collection pipe, 27...Vent hole, 28...Tear part of jacket outer box, 29...Water box, 30
...Smoke collection box, 31...Air inlet for secondary combustion, 40
... Chimney, 41 ... Waste gas cleaning device, 50,51
...damper.

Claims (1)

[Claims] 1. A smoke collection box 30 having a secondary combustion air intake port 31 is attached to the rear half area of the upper surface of the top plate 21 of the outer box 10, a chimney is set up on the top surface of the smoke collection box 30, and the outer box 10 An inner box 22 is suspended from the lower surface of the top plate 21 on the inside of the box, a mesh pipe 23 is hung from the lower part of the inner box 22, and a combustion waste supply port 24 communicating with the inside of the inner box is provided in the front half of the top plate 21 of the outer box 10. Provide a combustion dust supply lid 2.
5, the top plate 21 is punched out so that its top protrudes into the smoke collection box 30, and
There are many ventilation holes 27 in the lower half that reach inside the mesh tube 23.
A smoke collection pipe 26 with a hole drilled therein is supported and attached to the top plate, and a fire opening door 14 and an appropriate number of air inlets 11 for primary combustion are provided at the bottom of the outer casing 10, and a small hole 12 is provided at the top as a steam inlet. A jacket outer case 20 is provided around the jacket outer case 10, and a cut-out portion 2 is provided on the wall surface of the jacket outer case 20.
8 and a water injection box 29 covering the water injection box 29.