JPS59205517A - Waste incinerator - Google Patents

Abstract

PURPOSE:To obtain a waste incinerator, which enables to incinerate waste in smokeless and odorless state by a structure wherein the relationship between the height and diameter of the space in the incinerator is specified. CONSTITUTION:An exhaust port 6 is formed at the central part of the top wall of the combustion chamber 2 and at the central part of the bottom wall of the dust collecting chamber 4 of an incinerator 1. In addition, a waste charging port 7 is openably provided on the side wall of the combustion chamber 2. Further, a burner 8 is arranged tangentially directing donwards. During the incineration of waste, the gas in the incinerator is induced to be sucked out by means of the negative pressure produced in an exhaust tube 9 by the action of an ejector fan 12. When the height H and the diameter D of the space 1' in the incinerator satisfies the relation of H>=1.2D, burner flames form primary vortices A along the inner wall of the combustion chamber 2 and descend so as to burn waste. Only the specifically lighter high temperature heated gas form a secondary vortex denoted by B and swirlingly ascends at high speed and is discharged outside the incinerator through the exhaust tube 9.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a waste incinerator, and more particularly to a waste incinerator that is flame retardant and can smokelessly and odorlessly incinerate even waste that generates odor.

Experimental animals generally used in hospitals, pathological and pharmaceutical laboratories, etc.
The feces and urine of these animals generated in breeding farms contain high moisture content, are flame retardant, and emit a strong odor. The current situation is worrying.

That is, an object of the present invention is to provide a waste incinerator capable of incinerating these wastes in a smokeless and odorless manner.

According to the present invention, in an incinerator having a vertical cylindrical furnace interior space consisting of a combustion chamber and a dust collection chamber located above the combustion chamber, the combustion chamber is oriented downward in a tangential direction to the side wall. The dust collection chamber has a burner hole that can be opened and closed, and a waste inlet that can be opened and closed on the upper side wall. The combustion chamber is provided with an exhaust port communicating with an exhaust stack in which negative pressure is generated by a blower, and the combustion chamber and dust collection chamber are formed between a central part of a ceiling wall of the combustion chamber and a central part of a bottom wall of the dust collection chamber. Provided is a waste incinerator, wherein the waste incinerator is connected by a discharge boat, and the diameter and height H of the incinerator space are formed so as to satisfy the following formula 5. .

The present invention will be described below based on specific examples shown in the accompanying drawings.

Referring to FIG. 1 showing a side cross section and FIG. 2 showing a plan cross section of the incinerator of the present invention, the incinerator 1 has a vertical cylindrical interior space (indicated by 1' as a whole), It consists of a lower body 6 in which a combustion chamber 2 is formed and an upper body 5 in which a dust collection chamber 4 is formed.

A discharge boat 6 is formed at the center of the ceiling wall of the combustion chamber 2 and at the center of the bottom wall of the dust collection chamber 4, thereby communicating the combustion chamber 2 and the dust collection chamber 4.

A waste input lower is provided on the upper side wall of the combustion chamber 2 so as to be openable and closable, and waste to be incinerated is dumped into the combustion chamber 2 through this input lower. Further, a burner 8 is provided on this side wall and is oriented tangentially downward.

Further, an exhaust hole 10 is formed in the center of the ceiling wall of the dust collection chamber 4 and communicates with the exhaust pipe 9, and an ejector 11 is formed in the exhaust pipe 9.
The ejector-blower 12 is in communication with the ejector-blower 12, and during incineration, the operation of the ejector-blower 12 creates a negative pressure in the exhaust pipe 9, thereby drawing in the gas in the furnace.

An important feature of the present invention is that the height H and diameter of the furnace space 1' are formed so as to satisfy the following formula % (1). In this case, the height of the furnace space 1' is calculated based on the top of the waste to be incinerated that has been dumped in the combustion chamber 2.

By establishing the relationship shown in equation (1) above between the height R and diameter of the furnace space 1', the burner flame forms a primary vortex A along the inner wall of the combustion chamber 2. As a result, only the high temperature, low specific gravity gas heated to 800-900°C is produced as shown by arrow B2.
A secondary vortex is formed, the gas swirls upward at a high speed of 60 to 40 m/sec, and is discharged from the exhaust stack 9 to the outside of the furnace. It will be appreciated that the low temperature, high specific gravity gas is thus separated and only the high temperature gas stream is discharged outside the furnace.

In addition, the incinerated material at the bottom of the furnace (bottom of the combustion chamber 2) is
It is heated by radiant heat from , B and contact heat transfer due to high-speed swirling flow, and the incineration progresses and eventually becomes ash. This ash is forced onto the P bottom periphery by the centrifugal force of the swirling flow, so
By providing an ash outlet 16 on the bottom side wall of the combustion chamber 2 and scraping out the ash appropriately, it is possible to prevent re-scattering.

Further, in the present invention, it is also important to provide a soot and dust reservoir 14 at the bottom periphery of the dust collection chamber 4. This soot and dust reservoir 14 can be easily provided, for example, by forming the bottom wall of the dust collection chamber 4 into a conical shape.

That is, the soot and dust contained in the high-speed swirling flow B is separated in the dust collection chamber 4 by the centrifugal force and accumulated in the soot and dust reservoir 14. Therefore, a soot dust outlet 15 is provided in the side wall of the dust collection chamber 4, and the accumulated soot and dust is discharged to the outside of the furnace through this outlet 15.

In this way, it becomes possible to incinerate waste that contains high moisture content, is flame retardant, and has an odor in a smokeless and odorless manner.

In the present invention, the inner diameter d of the discharge hole 10 provided in the ceiling wall of the dust collection chamber 4 is determined by the following formula, d≦3AD, in order to quickly form the swirling flow B mentioned above.・・・・・・・・・・・・
It is preferable that the formula (2) satisfies the inner diameter of the furnace space.

Further, the inner diameter of the discharge boat 6 is desirably the same as or slightly larger than the inner diameter of the discharge hole 10 so as not to disturb the swirling flow B.

[Brief explanation of the drawing]

FIG. 1 is a side cross-sectional view of the incinerator of the present invention, and FIG. 2 is a plan cross-sectional view of the incinerator of FIG. 1. Reference number 1 is incinerator, 1' is space inside f, 2 is combustion chamber, 6
is the lower body, 4 is the dust collection chamber, 5 is the upper body, 6 is the discharge port,
7 is a waste input port, 8 is a burner hole, 8' is a burner,
9 is a discharge pipe, 1o is a discharge hole, 11 is an ejector, 512 is an ejector-blower, 13 is an ash outlet, 14 is a soot and dust part, 15
indicates the outlet. Patent applicant: Higen Co., Ltd.

Claims (1)

[Claims] (1) In an incinerator having a vertical cylindrical furnace interior space consisting of a combustion chamber and a dust collection chamber located above the combustion chamber, the combustion chamber has a burner oriented downward in a tangential direction to the side wall. The dust collection chamber has a waste inlet that can be opened and closed on the upper side wall, and a separated ash reservoir is formed at the bottom side edge, and a blower is used in the center of the ceiling wall. The combustion chamber and the dust collection chamber are provided with an exhaust port that communicates with the exhaust pipe where pressure is generated, and the combustion chamber and the dust collection chamber are formed by a discharge port formed between the center of the ceiling wall of the combustion chamber and the center of the bottom wall of the dust collection chamber. A waste incinerator, characterized in that the diameter and height H of the incinerator space satisfy the following formula H≧1.2D.