JPH10110921A - Continuous throw rotary furnace - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectually combust various wastes in which there are mixed low calorie wastes such as high water content wastes containing water and high calorie wastes. SOLUTION: There are provided a furnace body 4 where a plurality of drums are arranged on a straight line and openings of the adjacent drums are rotatably coupled, lateral turning driving means 3 provided for each drum, waste supply means 6 provided on an opening side, a desalting/purification apparatus 7 provided out the other opening, a dust collector 8, a cooling apparatus 9, a cleaning apparatus 10, exhaust means 11, combustion means 13, 14 provided at a coupling part between the drums, and residue discharge means provided on later stages of the foregoing members. A scraping protrusion is provided on an internal wall of each drum which is constructed such that the waste is transferred from one side to the other side upon lateral turning motion, and the furnace body is arranged such that the whole thereof is substantially horizontal, and further each drum rotation is variably controlled, and a hot water supply apparatus utilizing dissipated heat and a heat exchanger are provided on the outer periphery.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to low-calorie waste such as fruit juice, sludge, waste liquid or high-moisture waste containing plenty of water, such as garbage, as well as paper waste, wood ends and cut grass. The present invention relates to a continuous charging type rotary furnace capable of continuously and efficiently incinerating a large amount of miscellaneous waste containing high-calorie waste in a large amount.

[0002]

BACKGROUND ART Incineration is a phenomenon in which organic substances in waste react with oxygen in air (oxidation reaction) and burn with heat and light. Normally, in a so-called vertical dry distillation furnace, control air is introduced from the bottom, causing partial combustion at the bottom, the adjacent part is heated by the heat, decomposition and vaporization of organic matter starts, and the entire bottom becomes a grate Following the (red heat layer), the upper part is decomposed and vaporized (fluidized layer), and further absorbs the upper part (heat transfer layer), and the uppermost part becomes a decomposed gas (gas layer). Burns slowly.

[0003] When the thermal decomposition of the organic matter is completed, the dry distillation ends, the carbonization reaction starts, and the cracked gas drawn from the dry distillation furnace is heated by auxiliary combustion in a gas combustion furnace to supply necessary air. Completely burned. However, the combustion of organic matter mixed in high-water content waste and the like by the conventional dry distillation furnace burns gradually upward from below as described above, and thus, for example, as in fruit juice, sludge, waste liquid or garbage. It is not suitable for the incineration of low-calorie waste such as high-moisture waste containing plenty of water, and various miscellaneous wastes containing high-calorie waste such as paper waste, wood ends, cut grass, etc. There was room for various improvements.

[0004]

Therefore, in the conventional incineration of low-calorie waste such as high water content waste,
Assuming that waste is put into the carbonization furnace, for example, by introducing a dehydration treatment device to reduce the water content of waste as much as possible, to carry out combustion treatment, and to increase combustion efficiency Various methods such as mixing a combustion promoting material into the waste or setting the gas burner temperature to an abnormally high temperature are adopted, and high-calorie waste such as paper waste, wood ends, cut grass, etc. For incineration of various mixed wastes, such as pretreatment such as low calorie waste, there is no need to set the furnace temperature to a high temperature, incineration equipment to incinerate low calorie waste, The incinerator for incinerating high-calorie waste must be separately installed in accordance with the waste, and there is a problem that the equipment cost becomes expensive.

[0005] In particular, in the conventional incinerator for incinerating high-calorie waste, it is necessary to provide a dehydration apparatus in addition to the incinerator, and it is necessary to specially purchase a combustion promoting material. In addition, the temperature inside the furnace body must be set to an unnecessarily high temperature, so that there is a problem that the fuel efficiency becomes extremely high. In the case of conventional vertical incinerators, waste such as high-water waste is supplied from the top of the incinerator, dropped and burned by a gas burner located below, so that the amount of waste supplied is It is very difficult to control the burning rate, and therefore it is very difficult to achieve complete incineration. Moreover, there are many residues, and the post-treatment is extremely complicated. Had.

Therefore, in consideration of the above-mentioned improvements, a roll-over type rotary furnace 20 disclosed in FIG. 3 has been conventionally developed. The roll-over type rotary furnace 20 is provided with a roll-over drive means 22 above a main body base 21 and a rotatable furnace body 23 composed of one drum mounted above the roll drive means 22. The rollover driving means 22 includes an electric motor 22a,
The furnace body 23 is connected to an output gear 22b of the electric motor 22a.
The furnace body 23 is rolled over by meshing with a body gear 23a provided on the outer wall of the furnace.
22c, the left and right flanges 2 provided on the outer wall of the furnace main body 23
The furnace body 23 is configured to be able to smoothly roll over in response to 3b and 23b.

By the way, the whole shape of the furnace main body 23 composed of one drum has an opening 23d in a bottom portion 23c (located on a rear side portion), and the bottom portion 23c side has a small diameter.
The large opening 23e (located on the front side) is formed in a tapered substantially bottomed cylindrical shape having a large diameter, and a flame port faces the inside of the furnace body 23 on the large opening 23e side. Gas burner 24 and exhaust means (including dust collector) 25
And a waste material outlet 26 and a blowing means 27 which can be opened and closed downward.
A closed body 28 having a screw 29a having a supply port facing the inside of the furnace main body 23 through the opening 23d is provided on the bottom 23c side,
The waste supply means 29 supplies a predetermined amount of waste in the hopper 30 into the furnace main body 23 for incineration. Therefore, the incineration efficiency is the same as that of the above-described conventional carbonization furnace or vertical incinerator. It is much more efficient than dewatering, and before the waste is put into the furnace as in a carbonization furnace, it is necessary to perform dehydration treatment, mix combustion aids into the waste to improve combustion efficiency, or use a gas burner. It is not necessary to set the temperature of 24 to an unusually high temperature, and waste is not burned by a gas burner located below while supplying and dropping waste from above the incinerator as in a vertical incinerator. It is very easy to control the supply amount and the burning rate of the material, and has many advantages such as little residue.

However, the roll-over type rotary furnace 2 having the above-described structure is used.
Since the furnace main body 23 at 0 is composed of one drum, when incinerating low-calorie waste such as high water content waste, the combustion temperature in the furnace is set to a high temperature, and 23 must be slowed down so that it is sufficiently dried, and when burning high-calorie waste such as paper waste, wood chips, cut grass, etc., the combustion temperature in the furnace If the temperature is set low and the rotation of the furnace body 23 is not accelerated, the incineration efficiency is remarkably reduced. In addition, regarding the incineration of various kinds of wastes in which high and low calories are mixed, since the low-calorie wastes must be completely incinerated, the rotation by the rollover driving means 22 must be set to be slow. However, in the combustion of high-calorie waste mixed, such slow rotation hinders the combustion, and the number of rotations and the furnace temperature according to the various wastes to be input are varied. It is very complicated to control the temperature to the optimum for incineration of various wastes, and it is not possible to obtain the ideal combustion, and the present situation is that further improvements are expected.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to remove plenty of water from fruit juice, sludge, waste liquid or garbage. It is possible to continuously and efficiently incinerate low-calorie wastes including high water-containing wastes, and various miscellaneous wastes containing high-calorie wastes such as paper waste, wood ends, cut grass, etc. In order to provide a continuous charging type rotary furnace, for this purpose, a plurality of drums having openings on the left and right are arranged in a straight line, and the opening of adjacent drums is rotatably connected to the furnace body. A rollover driving means provided for each drum of the furnace body, a waste supply means provided at one opening side of the furnace body, and a desalination / desulfurization provided at the other opening side of the furnace body. Equipment and downstream of the desalination / desulfurization equipment. A dust collecting device, a cooling device provided at a stage subsequent to the dust collecting device, a cleaning device provided at a stage subsequent to the cooling device, an exhaust unit provided at a stage subsequent to the cleaning device, and the furnace main body. The combustion means provided at both ends of each of the drums or the connecting portion of the respective drums, and the residue discharge means provided on the exhaust means side of the furnace main body, and on the inner wall of each drum constituting the furnace main body Is provided with a scraping protrusion having a predetermined height, so that the waste supplied along with the rollover is transported from one side to the other side. The rollover driving means disposed in a horizontal state and provided for each drum constituting the furnace main body is controlled by rotation control means, and configured to variably control the rotation of each drum. A heat exchange device is provided on the outer periphery Are furnace body provided with a hot water supply apparatus using a heat source is dissipated from.

[0010]

According to the present invention, the above configuration is adopted.
It is possible to freely change the number of rotations of each drum constituting the furnace main body while changing the number of rotations. Therefore, when the waste supplied to the furnace body is to incinerate only low-calorie waste such as high-water waste containing plenty of water such as fruit juice, sludge, waste liquid or garbage. In order to increase the combustion efficiency inside the furnace body by controlling the rotation speed to gradually increase from the waste supply means side to the exhaust means side and operating the auxiliary burner provided at the connection portion of each drum. Moisture is evaporated and dried from the low-calorie waste and finally completely incinerated. In addition, low-calorie waste such as high-moisture waste containing plenty of water, such as juice, sludge, waste liquid or garbage, and high-calorie waste such as paper waste, wood ends, cut grass, etc. In the case of incineration of various mixed wastes, the number of rotations is controlled so as to gradually increase for each drum from the waste supply means side to the exhaust means side, and a connection portion of each drum is provided. By appropriately operating the auxiliary burner provided in the above, the degree of drying of the waste is varied to enhance the combustion effect, thereby achieving ideal incineration. Further, since a heat exchanger is provided on the outer periphery of the furnace main body and a water heater using a heat source radiated from the furnace main body is provided, the heat radiation of the furnace main body can be effectively reused.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a continuous charging type rotary furnace according to the present invention will be described below with reference to FIGS. FIG. 1 is a side view showing the entire configuration of a continuous charging type rotary furnace according to the present invention,
FIG. 2 is a top view showing the entire configuration of the continuous charging type rotary furnace according to the present invention.

In the figure, reference numeral 1 denotes a continuous charging type rotary furnace. The continuous charging type rotary furnace 1 has a rollover driving means 3 (A block, B block, C block) above a main body base (base) 2.
A furnace body 4 composed of a plurality of, in this embodiment, three drums D ₁ , D ₂ , and D ₃ is rotatably mounted above. By the way, the rollover driving means 3 installed for each of the (A block, B block, C block) includes an electric motor 3a, and a body gear provided on an outer wall of the furnace main body 4 on an output gear 3b of the electric motor 3a. The furnace body 4 is configured to be turned over by meshing the furnace bodies 4a. 3
c is a rotation control means, and the rotation speed of each of the drums D ₁ , D ₂ , D ₃ constituting the furnace body 4 can be variably controlled by the rotation control means 3c.

Each of the drums D constituting the furnace body 4
_1, the overall shape of the D _2, D ₃ is constructed respectively from the opening 4c in along the other opening 4d cylindrical, the drum D _1,
D _2, D ₃ are aligned, each of the drum D _1, D _2, D ₃ between the opening 4c and the opening 4d adjacent to each other
Are fitted and rotatably connected to each other to form a furnace body 4.

An appropriate number of auxiliary burners 5 are provided at the connecting portion of the drums D ₁ , D ₂ , D ₃ ,
The temperature in the furnace can be always maintained at a target set temperature. Further, wherein the one open side of the drum D _1, fruit juice, sludge, low-calorie as high water waste containing plenty of water as waste or garbage wastes and, waste paper, Koba , cutting waste feed means side 6 for supplying miscellaneous waste calorie wastes are mixed as grass and the like are provided, also, on the opening side of the drum D _3, sequential desalination and desulfurization A device 7 and a dust collector (in this embodiment, a cyclone type dust collector is adopted) 8
Cooling device 9, cleaning device 10, exhaust means 11,
A residue discharging means 12 is provided.

Further, each of the drums D ₁ constituting the furnace body 4,
_On the inner walls of D ₂ and D ₃ , scraping protrusions (not shown in the figure) having a predetermined height are provided, so that waste supplied with the rollover is efficiently transported from one side to the other side. A heat exchanger X is provided on the outer periphery of the furnace body 4, and a hot water supply device Y using a heat source radiated from the furnace body 4 is provided.

The two drums D ₁ and D ₃ include:
Combustion means 13, 1 comprising a first burner and a second burner
4 are provided. The residual substance discharging means 10 is arranged so that miscellaneous substances including powdery substances and block-like residues can be efficiently carried out by the residual substance discharging means 10. The flame temperature of the first burner 13, the second burner 14, and the auxiliary burner 5 is controlled by a proportional controller (omitted in the drawing) to efficiently burn various wastes supplied into the furnace body 4. Is controlled to be able to.

Hereinafter, the present invention will be described based on the above configuration.
Explain the point of incineration of waste by a continuous charging type rotary furnace
You. In the continuous charging type rotary furnace 1 according to the present invention, the furnace main body 4 is structured.
Multiple drums D to be formed₁, D_Two, D_ThreeThe individual drum
D₁, D_Two, D_ThreeVia the rollover driving means 3 provided for each
Rollover drive while controlling the rotation speed by the rotation control means 3c.
Waste, fruit juice, sludge,
Plenty of water, such as waste liquid or garbage
Incineration of only low-calorie waste such as hydrated waste
If necessary, thoroughly dry the water etc. contained in the waste
The drum D on the waste supply means 6 side
₁More drum D_Two, Drum D_ThreeAnd gradually increase the rotation speed
Control so that That is, the foremost drum D₁
The waste supplied inside contains a large amount of moisture, etc.
Then, the rotation is a slow rotation incineration treatment (first
In the burner 13, most of the water is evaporated and dried.
The next drum D _TwoMove to This second stage
Eye drum D_TwoIn the first stage, evaporation and drying of water
So that it can be burned relatively easily
is there. Therefore, this drum D_TwoRotation of drum D₁Compared to
While rotating all of them at a high speed and performing the prescribed incineration,
Drum D_ThreeTransfer the waste to In this case, the furnace body 4
When the internal combustion temperature is lowered, each drum D
₁, D_Two, D_ThreeActivate the auxiliary burner 5 provided at the connection part
To prevent the combustion efficiency from lowering,
Give. And the second drum D_TwoNot incinerated
Remaining in the drum D_ThreeMigrated to the
Drum D after receiving the flame of the second burner 14_ThreeCompletely within
It is incinerated. The final drum D_ThreeThe rotation of the second stage
Drum D_TwoIncineration of only unincinerated waste in Japan
In relation, the second stage drum D_TwoEven faster than the rotation of
It will be incinerated by rotation. Like this
According to the continuous charging type rotary furnace 1 according to Ming,
Compared with the converter, the furnace main body 4 has a plurality of drums D ₁, D_Two, D
_ThreeTo increase the furnace capacity by connecting
At the same time, the rollover drive is performed while controlling the rotation speed of the furnace body 4.
Since the specified incineration process is performed, the amount of waste
Can be dramatically increased compared to the rollover rotary furnace of
The rate can also be significantly improved.

In addition, fruit juice, sludge, waste liquid or garbage
Like plenty of water containing high water content
Low-calorie waste, such as paper debris, wood chips, cut grass, etc.
Incineration of miscellaneous waste mixed with high-calorie waste
In the case of
Paper waste, wood ends,
Because high calorie waste such as cut grass is mixed,
Drum D₁, D_Two, D _ThreeThe rotation control of each stage is
And incinerate by slow rotation.

That is, the waste supplied to the foremost drum D ₁ also contains high-calorie waste such as paper waste, wood ends, cut grass, etc. ignition is also easy, since the evaporation and drying of the moisture and the like is easy, incinerated at each stage of the respective drums D _1, D _2, D ₃ is juice described above, sludge, waste or garbage be be carried from the incineration of only waste low-calorie, incineration a faster rotation of the drum D _1, D _2, D ₃ in the plenty as containing water of high water wastes such as, Complete incineration can be performed.

In particular, the feature of the continuous charging type rotary furnace 1 according to the present invention is that it has a low calorie content such as the above-mentioned fruit juice, sludge, waste liquid or garbage which contains plenty of water. Although the above-mentioned remarkable effects can be obtained by incineration of wastes alone, the low-calorie wastes such as high-water wastes and the paper wastes, wood ends, cut grass, etc. In the case of incineration of various miscellaneous wastes containing high-calorie waste, the incineration capacity per hour is increased compared to the conventional rotary-type rotary furnace, that is, the furnace inner volume is increased, By performing the predetermined incineration treatment by controlling the rotation speed of the main body 4 to perform the overturning operation, the most excellent incineration treatment ability can be exhibited. , Can notice a remarkable effect

In the present invention, a desalting / desulfurizing device 7, a dust collecting device (in this embodiment, a cyclone type dust collector is employed) 8, a cooling device 9, Since the cleaning device 10, the exhaust means 11, and the residue discharge means 12 are provided, it is possible to effectively remove chlorine gas and toxic substances such as tyoxin discharged by combustion of industrial waste. Further, since a heat exchanger X is provided on the outer periphery of the furnace main body 4 and a water heater Y using a heat source radiated from the furnace main body 4 is provided, the hot water can be used effectively.

[0022]

As described in detail above, the present invention relates to a furnace in which a plurality of drums having openings on the left and right are arranged in a straight line, and the openings of adjacent drums are rotatably connected. A main body, a rollover driving means provided for each drum of the furnace main body, a waste supply means provided at one opening side of the furnace main body, and a desalination / supplying apparatus provided at the other opening side of the furnace main body. A desulfurization device, a dust collection device provided at a subsequent stage of the desalination / desulfurization device, a cooling device provided at a latter stage of the dust collection device, a cleaning device provided at a later stage of the cooling device, An exhaust unit provided at the subsequent stage of the apparatus, a combustion unit provided at both ends of the furnace main body or a connection portion between the respective drums, and a residue discharging unit provided on the exhaust unit side of the furnace main body. At the same time, on the inner wall of each drum constituting the furnace A scraping protrusion having a height is provided, so that waste supplied along with the rollover is transported from one side to the other side, and furthermore, the whole furnace body is in a substantially horizontal state. Arranged, the rollover drive means provided for each drum constituting the furnace main body is controlled by rotation control means, so that each drum rotation can be variably controlled, furthermore, on the outer periphery of the furnace main body, Since the heat exchange device is provided and the hot water supply device using the heat source radiated from the furnace main body is provided, it is possible to freely rotate the drums constituting the furnace main body while changing the number of rolls to roll over. Therefore, when the waste supplied to the furnace body is to incinerate only low-calorie waste such as high-water waste containing plenty of water such as fruit juice, sludge, waste liquid or garbage. In order to increase the combustion efficiency inside the furnace body by controlling the rotation speed to gradually increase from the waste supply means side to the exhaust means side and operating the auxiliary burner provided at the connection portion of each drum. Moisture is evaporated and dried from the low-calorie waste and finally completely incinerated. In addition, low-calorie waste such as high-moisture waste containing plenty of water, such as juice, sludge, waste liquid or garbage, and high-calorie waste such as paper waste, wood ends, cut grass, etc. In the case of incineration of various mixed wastes, the number of rotations is controlled so as to gradually increase for each drum from the waste supply means side to the exhaust means side, and a connection portion of each drum is provided. By appropriately operating the auxiliary burner provided in the above, the degree of drying of the waste is varied to enhance the combustion effect, thereby achieving ideal incineration. Further, since a heat exchanger is provided on the outer periphery of the furnace main body and a hot water supply device using a heat source radiated from the furnace main body is provided, it is possible to effectively reuse the heat radiation of the furnace main body. Has excellent effects.

[Brief description of the drawings]

FIG. 1 is a side view of a continuous charging type rotary furnace according to the present invention.

FIG. 2 is a top view of the continuous charging type rotary furnace according to the present invention.

FIG. 3 is a structural explanatory view of a conventional rotary incinerator.

[Description of sign]

DESCRIPTION OF REFERENCE NUMERALS 1 Continuous charging type rotary furnace 2 Main body base 3 Rollover drive means 3a Electric motor 3b Output gear 3c Rotation speed control device 4 Furnace body 4a Body gear 4b Flange 4c One opening 4d The other opening 5 Auxiliary burner 6 Waste supply means 7 Desalination / desulfurization device 8 Dust collector (cyclone type dust collector) 9 Cooling device 10 Cleaning device 11 Exhaust means 12 Residual matter discharge means 13 Burning means (first burner) 14 Burning means (second burner) D ₁ to D ₃ drum X heat exchanger Y water heater

Continued on the front page (51) Int.Cl. ⁶ Identification code FI F23G 5/46 ZAB F23G 5/46 ZABZ 5/50 ZAB 5/50 ZABG F27B 7/20 F27B 7/20

Claims (4)

[Claims] 1. A furnace body comprising a plurality of drums having openings on the right and left arranged in a straight line, and the openings of adjacent drums are rotatably connected to each other. The provided rollover drive means, the waste supply means provided on one opening side of the furnace body, the desalination / desulfurization apparatus provided on the other opening side of the furnace body, and the desalination / desulfurization apparatus A dust collecting device provided at a later stage, a cooling device provided at a stage subsequent to the dust collecting device, a cleaning device provided at a stage subsequent to the cooling device, and an exhaust unit provided at a stage subsequent to the cleaning device, A continuous charging rotary furnace, comprising: combustion means provided at both ends of the furnace main body or a connection portion between the respective drums; and a residue discharging means provided on an exhaust means side of the furnace main body. . 2. A scraping projection having a predetermined height is provided on the inner wall of each drum constituting the furnace main body, so that waste supplied along with the rollover moves from one side to the other side. The furnace body is configured to be conveyed, and the whole furnace body is arranged in a substantially horizontal state.
The side-by-side connected rotary converter described. 3. The apparatus according to claim 1, wherein the rollover drive means provided for each drum constituting the furnace main body is controlled by a rotation control means so that the rotation of each drum can be variably controlled. Continuous charging rotary furnace. 4. The continuous charging type rotary furnace according to claim 1, wherein a heat exchanger is provided on an outer periphery of said furnace main body, and a hot water supply apparatus utilizing a heat source radiated from the furnace main body is provided. .