JPH07253205A - Middle-size incinerator for industrial waste - Google Patents

Abstract

PURPOSE:To increase combustion effect and save energy by a method wherein a screw vane and agitating auxiliary rib, provided between the screw. vanes, are attached to a water-cooled rotary shaft, provided in an incinerator, while a heat exchanging pipe is attached to a high-temperature pipe provided in a duct between the incinerator and a cyclone. CONSTITUTION:The rotating shaft of a screw vane 17 or a water-cooled tubular shaft 13 is provided horizontally in the axial direction of the cylinder of a furnace body. The rotating shaft 13, to which the screw vane 17 is attached, is turned by four times per one minute to agitate and burn charged waste. An agitating auxiliary rib 18, connected in the orthogonal direction of the rotation of the furnace body between the screw vanes 17, increases the agitating function of the burning waste together with the screw rotating shaft and assists the combustion effect of the incinerator. A heat exchanging pipe 26, connecting an air introducing port 214 and an air discharging port, which are provided in a duct, effects heat exchange between the heat of about 400 deg.C of exhaust gas in the duct, pulled out of an air discharging port and connected to the suction port 35 of an air blower 23, to blow the hot-air of about 100 deg.C into the air blower 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a sludge obtained by dehydration-treated sludge, tofu, apple, pear, mandarin orange, etc.
Alternatively, the present invention relates to a medium-sized incinerator that can be effectively used for incineration of waste by vegetables, food residues, bento returns, leftover food and other food service industries, government agencies, or kitchen companies in each company.

[0002]

2. Description of the Related Art As a combustion type treatment apparatus for industrial waste,
There are a batch method that stirs the waste that is put into the combustion furnace and moves it intermittently to burn it, and a continuous method that continuously moves the waste to stir and burn it.Slag, fruits, tofu, etc. The continuous method is suitable for waste products, and the intermittent batch-type combustion method is suitable for household kitchen waste and coarse and undefined industrial waste by processors.
As a conventional incinerator, a device with many treatment means has been proposed (a) Jitsuhei 2-45621, (b) Jitsuhei 3-24995, and (c) JP-A-4-11311.
There is No. 5, etc. As a domestic refuse incinerator, there is Jikken 2-45621 of (a) above. As industrial waste incinerators, there are large-scale industrial waste incinerators produced by various companies such as sludge from factory wastewater, but there are many proposals for medium-sized incinerators that can be used by each company. There are many problems with the generated exhaust gas and the incineration capacity of the incinerator. Conventionally, there is an incinerator using the cone rotary kiln of FIG. 3 as this type, but the sludge fed into the furnace body from the bucket conveyor 1 rotates the industrial waste introduced through the pushing screw 3 of the hopper by itself. A mechanism is used in which the combustion gas is exhausted from a cyclone 6 connected to a duct 5 by stirring and combusting through a kiln 4 and a combustion burner 9, and at the same time, ash is taken out from a lower dust collecting portion 7. Reference numeral 8 is an ash discharging screw on the way. The above device rotates the kiln by itself to burn sludge, fruit slag, etc. to incinerate it, but since the waste is a granular material containing water, the particles are agglomerated even when the kiln is rotated and stirred. However, there is a problem in the ashing process by sufficient combustion. Further, the kiln mechanism using the screw shaft also has a problem that the combustion action is insufficient and the function should be improved.

[0003]

The problems to be solved by the present invention are as follows: (1) A medium-sized incinerator capable of treating industrial waste by each company, and (2) Combustion effect by improving the combustion mechanism. Improve, (3) Increase thermal efficiency by reusing heat. (4) Combustion saving and energy saving were the issues.

[0004]

[Means for Solving the Problems] As a means for achieving the above object, there is provided an incinerator comprising a tubular incinerator horizontally installed on a frame and a cyclone connected to the incinerator through a duct, The incinerator is composed of a water-cooled outer cylinder with an exterior coating and a furnace body installed in the water-cooled outer cylinder, and a water-cooled cylinder shaft horizontally installed in the furnace body in the axial direction of the cylinder and screw blades axially attached to the water-cooled cylinder shaft. A stirring auxiliary rib connected between the screw blades is provided, and a combustion blow-in port communicating with the inside of the furnace and an intake port of the air blower are provided at the outer lower part of the incinerator, and heat is generated between the cyclone duct base at the attachment part of the air blower. A medium-sized incinerator for industrial waste, which is equipped with an exchange pipe connected to the quantitative feeder in the upper part of the incinerator and a bulk type input port to incinerate the waste that is input continuously or intermittently. Summary and Is shall.

[0005]

[Function] Regarding sludge and other granular wastes,
It is sent from the quantitative feeder into the furnace, the coarse waste is put in through the charging port, the constant temperature is 500 ° C to 600 ° C by the combustion method by the continuous feeding method for the fixed quantity and the batch method for the large quantity. The combustion product is gradually rotated forward and backward by the screw shaft that rotates 4 times per minute while stirring in a forward feed manner, and at the same time, the stirring ribs between the screw blades continuously stir the combustion product vertically in the furnace body. On the other hand, the combustion product sent to the front of the furnace body and sent to the cyclone from the duct takes out incineration ash from the lower part and ejects exhaust gas g by combustion from the upper part. In addition, the high-temperature exhausted heat is recirculated into the furnace body through the heat exchange pipe connected to the duct communicating with the cyclone for the auxiliary combustion effect by the air blower, and the auxiliary combustion effect is further enhanced.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be illustrated and described below. In the drawing, 10 is an incinerator, 11 is a cylindrical fixed furnace body,
Reference numeral 12 is a circulating water-cooled outer cylinder mounted on the fixed furnace body. Thirteen
Is a rotating shaft of the screw blades 17 provided in the cylindrical axis direction of the furnace body, which is a water-cooled cylinder shaft. Reference numeral 14 denotes a cyclone for discharging exhaust gas of burned waste, which is connected to the furnace body of the incinerator by a duct 15. 16 is a common mount for the furnace body and the cyclone. The rotary shaft 13 having the screw blades 17 attached thereto rotates four times in one minute to stir and burn the input waste. Reference numeral 18 denotes an agitation assisting rib connected between the screw blades 17 in the direction orthogonal to the rotation of the furnace body, which assists the combustion action by agitating the agitating function of the combustion waste together with the screw rotating shaft. The mounting position and number of auxiliary ribs shall be appropriately determined according to the scale of the incinerator and the content of waste. 19 is about 85% dehydrated sludge, tofu, slag of fruits (apples, pears, grapes, etc.), quantitative feeder for waste s crushed into particles, 20 is a large box such as return lunch, rice ball, kitchen leftovers It is an input port. Reference numeral 21 is a blowing port of the combustion burner 22. An air blower 23 is provided on the side surface of the furnace side by side with the blower inlet of the burner. (Not shown). Reference numeral 24 is an air inlet provided at the base of the duct, 25 is an air outlet, and 26 is a heat exchange pipe connecting the air inlet 24 and the air outlet provided in the duct. It communicates with the suction port 35 and exchanges heat with the exhaust heat in the duct of about 400 ° C, and the air blower has about 1
Blow in hot air at 00 ° C. 27 is a cyclone ash extraction part, 28 is a chimney, 29 is cold water intake of the reactor body water cooling outer cylinder, 30 is hot water outlet, 31 is thermocouple, 32 is viewing window, 3
3 is a solenoid valve or a manual valve, 34 is an operation panel for automatic control, 36
Is a pressure gauge and 37 is a safety valve.

[0007]

[Effect] As described above, according to the present invention, the stirring assist ribs are provided between the screw blades in order to improve the conventional combustion efficiency, so that the stirring function of the injected waste is improved, and sludge and other granular waste having a lot of water content Also, the improvement of the stirring function eliminated the generation of lumps of lumps that had remained as unburned materials in the past. Therefore, the ash outlet at the center of the lower part of the furnace is no longer required, and the ashing action by burning out the lumps of lumps has been proved. Also, due to the pipe connection between the duct and the air blower, the cold air at 6 ° C in winter rises to about 100 ° C due to the heat exchange between the hot air inside the duct and the chill of the outside air. Combined with the function of, the combustion effect is promoted, and it has a great effect on saving fuel consumption.

[Brief description of drawings]

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

FIG. 2 is an operation system diagram of the present invention.

FIG. 3 is a sectional view of a conventional incinerator.

[Explanation of symbols]

 10 Incinerator 11 Furnace Body 12 Water-cooled Outer Cylinder 13 Rotating Shaft 14 Cyclone 15 Duct 16 Frame 17 Screw Blade 18 Stirring Assist Rib 19 Feeder 20 Coarse Material Inlet 23 Air Blower 24 Air Inlet 25 Air Outlet 26 Heat Exchange Pipe 32 Peeping Window 34 Automatic control operation panel 35 Suction port s Sludge

Claims (1)

[Claims] 1. An incinerator comprising a tubular incinerator horizontally installed on a pedestal and a cyclone connected to the incinerator via a duct, the incinerator being water-cooled by covering the furnace body and the furnace body. The furnace body is composed of an outer cylinder, and the furnace body is provided with a water-cooling cylinder shaft horizontally arranged in the cylinder body axial direction, a screw blade axially attached to the water-cooling cylinder shaft, and a stirring auxiliary rib connected between the screw blades, and the outside of the incinerator. A combustion burner inlet and an air blower inlet that communicate with the inside of the furnace are installed in the lower part, and a heat exchange pipe is attached between the air blower inlet and the duct base, and the quantitative material feeder and bulky material inlet in the upper part of the incinerator. A medium-sized incinerator of industrial waste, characterized in that the wastes respectively put in are incinerated continuously for quantitative granules, and for intermittently bulky ones by intermittent batch type means.