JP3018195B2 - Waste incineration equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application> The present invention prevents abnormal combustion in a waste incinerator, particularly in a small incinerator, which has an opportunity to occur in the furnace when incinerating the waste in the furnace. An object of the present invention is to provide a structure of a waste incinerator.

<Conventional Techniques and Problems> FIGS. 12 and 13 show the structure of a waste incinerator proposed and implemented by the inventor previously.

Conventionally, this type of incinerator is operated for 8 to 10 hours of waste incineration only during the daytime, and the driver throws in a large amount of incineration before leaving the company and leaves the fan in continuous operation. However, a large amount of unburned matter is contained in the ash discharged the next morning due to the accumulation of unburned matter on the rostrum or the occurrence of a clogging phenomenon at the top of the deposited matter. Therefore, at this time, if unburned gas remains in the furnace, there is a risk of explosion in the furnace. Next, the structure of the apparatus will be described. The waste incinerator 1 is usually a furnace having a circular cross section, the inner wall of the furnace is formed by a water jacket 3 including an air supply pipe 2, and the combustion air is supplied by the water jacket. The incineration material is supplied from a plurality of nozzles 4 of an air supply pipe penetrating the inner wall surface of the furnace 3, and the material to be incinerated is supplied from a supply port 5 into the furnace. At the bottom of the furnace, there is provided a rostor 6 formed by a water tube or the like, and the ash is taken out from an ash reservoir 7 thereunder by a scoot or the like. The combustion residue on the rostrum is taken out from the outlet 8.

Cooling water 9 is supplied to the water jacket 3 from a nozzle 10 and heat is received in the water jacket 3 to form a water / water mixture 12.
And sent out from the nozzle 11. Air to the air supply pipe 2 is supplied from pipes 13a and 13b.

In this small incinerator, unusual combustion in the furnace, which does not normally occur in a mold that injects waste or in a large-sized device, is caused by stagnation of unburned gas due to bridging of the incinerated material. In this case, the incineration ash was scattered, but measures must be taken to ensure safe driving. Examining the cause, it was found that it was a time when co-firing of a material such as paper and a vinyl-based material having a higher calorific value and a larger amount of incineration per unit time than the record of the handler. The molten material of the vinyl material and the bag of the same material are semi-melted, and the unburned papers to be incinerated are adhered and held on the furnace wall, and the inside of the furnace is just covered, and the inputted waste is steamed. As a result, unburned gas accumulates between the lower burning incineration material and the material connected to the lid, and the state of incomplete combustion continues. It is estimated that the flammable gas ignites and burns abnormally.

Therefore, it is necessary to provide an apparatus having a structure that does not cause such flammable gas to stay in the furnace.

<Object of the invention> The present invention provides a method for closing an upper part of a combustion flame in a furnace even if a specified amount or more of an incinerated material is erroneously charged into a furnace or a large bagged material is charged. An object of the present invention is to provide a structure of a waste incinerator that does not cause a risk of abnormal combustion.

<Summary of Means> In short, in a device for incinerating waste, the peripheral wall of the furnace is a membrane wall formed by a plurality of water pipes and connecting plates,
A plurality of air supply nozzles are provided on this membrane wall,
In addition, the upper portions of the plurality of water tubes which are separated from and hang down from the membrane wall surface are respectively connected to the water tubes of the membrane wall in the space above the waste accumulation upper surface, and the lower portion thereof is connected to the water tube of the membrane wall near the lower portion of the rostral surface. Device.

<Embodiment 1> FIG. 1 is a longitudinal sectional view showing the structure of an apparatus according to a first embodiment of the present invention in which the apparatus shown in FIG.
FIG. 3 and FIG. FIG. 3 is an enlarged detailed view of a portion B in FIG. The water pipe 14 forming the combustion gas vent passage 15 is provided at the upper connection position 14a of the water jacket 3 above the level H of the incineration material, and the lower connection portion is provided below the rostral surface. Thus, even if unburned combustion gas is generated in the incineration material, it does not stay and escapes to the upper part via the combustion gas release passage 15 and burns in the empty tower portion 16 to perform abnormal combustion in the furnace. Absent. FIG. 2 is a cross-sectional view showing an example in which three water pipes 14 forming a combustion gas vent passage are provided. As shown in FIG. The unburned gas escapes. If two or more water pipes are juxtaposed, unburned gas escapes from between the two water pipes and abnormal combustion can be easily and reliably prevented.

<Embodiment 2> FIG. 9 shows a waste supply apparatus employing a membrane wall 18 in place of the water jacket shown in FIG. 12, and reference numeral 18a denotes a roaster having a water pipe. Figure 10 shows the air chamber 19
Bar connecting tubes to form a membrane
2 shows an air nozzle 20 provided in 21. FIG. 10 shows an air chamber 19 surrounding the number of water pipes for forming a membrane wall for explanation. Usually, the air chamber 19 surrounds the entire membrane wall. FIG. 11 is an enlarged partial view of a portion C in FIG. In this case, the rostr 18a is formed by a water tube with a header.

FIG. 8 shows an example in which a water pipe 24 is connected to the water pipe 22 on the membrane wall separately from the water pipe for forming the combustion gas passage. In this case, the vent passage is the space between the two tubes 24,22. The water flowing through the membrane wall mainly rises in the water pipe 24, but does not cause poor circulation. If necessary, a resistance member can be provided in the water pipe 22 shown in FIG.

<Example 3> For a furnace having a membrane wall, the water tube 22 itself, which is a component thereof, can be used as a water tube portion for forming a combustion gas passage. In this case, the water pipe is bent in advance for the combustion gas passage forming portion as shown in FIG. 7, and the gas vent passage is formed by the membrane as shown. Also, since the combustion gas passage 15 in FIG. 6 is formed by a water pipe forming a membrane wall, the membrane walls above and below this combustion gas vent passage allow the pipes 22a and 22a 'to escape toward the furnace center. It is necessary to make the pitch of the pipe half of the membrane wall part of the above. FIG. 4 is a longitudinal sectional view of an apparatus in which the present invention is applied to a membrane furnace,
FIG. 5 is a cross-sectional view of the furnace.

<Effects of the Invention> By implementing the present invention, it is possible to easily modify an existing waste incineration device, and to continuously operate the device safely without abnormal combustion of unburned gas in the furnace. Has become possible.

In addition, a passage for air and degassing was always secured, and the unashed portion in the ash when the worker went to work the next day had less unburned ash, which facilitated the ash removal work.

[Brief description of the drawings]

1 is a longitudinal sectional view of the apparatus according to the first embodiment, FIG. 2 is a sectional view taken along the line II of FIG. 1, and FIG. 3 is a diagram showing the upper part of a water pipe for forming a combustion gas vent passage and a water jacket. FIG. 4 is a longitudinal sectional view of the device of the second embodiment, FIG. 5 is a II-II sectional view of FIG. 4, and FIG.
FIG. 7 is a partial view of a passage forming portion of a water pipe for forming a combustion gas passage according to a second embodiment, FIG. 8 is a partial view of a connecting portion between water pipes 22 and 24, and FIG. 9 is a membrane wall type disposal FIG. 10 is a longitudinal sectional view of the incinerator, FIG. 10 is a partial view corresponding to the reference numeral E in FIG. 6, FIG. 11 is a partial enlarged view of the reference numeral C in FIG.
FIG. 13 is a longitudinal sectional view of a conventional apparatus showing a concept of a state in which abnormal combustion occurs in a furnace, and FIG. 13 is an enlarged sectional view of a portion A in FIG. DESCRIPTION OF SYMBOLS 1 ... Waste incinerator, 2 ... Air supply pipe 3 ... Water jacket, 4 ... Nozzle 14 ... Water pipe, 15 ... Combustion gas vent passage 17 ... Gap, 18 ... Membrane wall 22, 22a ... water pipe, 24 ... water pipe

────────────────────────────────────────────────── ─── Continuation of the front page (56) References Jikgyo 41-4446 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) F23G 5/00 F23G 5 / 44,5 / 46 F23M 5/08

Claims (1)

(57) [Claims] In an apparatus for incinerating wastes, a peripheral wall of a furnace is a membrane wall formed by a plurality of water pipes and a connecting plate, and a plurality of nozzles for supplying air are provided on the membrane wall. The upper part of the plurality of hanging water pipes is connected to the water pipe of the membrane wall in the space above the waste accumulation upper surface, and the lower part is a waste incinerator connected to the water pipe of the membrane wall near the lower part of the rostral surface.