JP2525563Y2 - Waste incineration equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refuse incinerator.

[0002]

[Problems to be solved by the invention] The calorific value of municipal solid waste is increasing orally. Along with this, it is desired to develop a process that not only incinerates refuse but also pyrolyzes it to generate high-calorie gas and makes effective use of it.

[0003] In the course of thermal decomposition, it is desirable that the amount of moisture and air contained in the refuse is small in order to generate high calorie gas.

In addition, when supplying garbage to the pyrolysis furnace, if harmful gas generated in the pyrolysis furnace leaks out of the pyrolysis furnace, it causes a problem of environmental destruction.

It is an object of the present invention to provide a refuse incinerator that efficiently reduces moisture and air contained in refuse supplied to a pyrolysis furnace and does not leak toxic gas generated in the pyrolysis furnace to the outside. To provide.

[0006]

A refuse incinerator according to the present invention is provided with a crusher provided between a hopper and a pyrolysis furnace, and a refuse incinerating garbage being crushed in the crusher for drying and degassing. Means for supplying superheated steam to the crusher, and gas generated in the crusher and gas leaked from the pyrolysis furnace to the crusher are exhausted from the crusher and mixed with combustion air supplied to the combustion furnace. And mixing means.

[0007]

The refuse incinerator according to the present invention has a crusher provided between the hopper and the pyrolysis furnace, so that the refuse is supplied from the hopper to the crusher and crushed by the crusher. , The refuse is homogenized.

Further, the apparatus is provided with a supply means for supplying superheated steam to the crusher so that the refuse being crushed in the crusher is heated and dried and degassed. The supplied superheated steam comes into contact efficiently, and the drying and degassing of the refuse is performed efficiently.

The apparatus further comprises a mixing means for exhausting the gas generated in the crusher and the gas leaked from the pyrolysis furnace to the crusher, exhausting the gas from the crusher and mixing the gas with the combustion air supplied to the combustion furnace. The gas generated in the crusher and the gas leaked from the pyrolysis furnace to the crusher are mixed with combustion air to be diluted, and supplied to the combustion furnace in a diluted and safe concentration. Is done.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the refuse incinerator includes a hopper 11, a take-out device 12, a crusher 13, a pyrolysis furnace 14, and an incinerator 15.

The unloading device 12 includes a casing having an upward inlet and a downward outlet connected to the outlet of the hopper 11.
The casing 21 includes a pusher 22 that is horizontally movable within the casing 21 so as to open and close the discharge port.

The crusher 13 is mounted on a horizontal cylindrical body 23 having a left-end upward inlet and a right-end downward outlet connected to the outlet of the take-out device 12, and a horizontal rotary shaft 24 arranged concentrically inside the body 23. It consists of a number of rotary hammers 25. A vertical duct 26 is interposed between the outlet of the crusher 13 and an upward inlet provided at the top of the pyrolysis furnace 14. The duct 26 is provided with upper and lower sliding movable dampers 27 and 28 in two stages. One end of a superheated steam supply pipe 29 is connected to a portion immediately above each of the body 23 of the crusher 13 and the upper and lower dampers 26, 27 of the duct 26. The outlet of the gas mixing ejector 31 is connected to the inlet of the incinerator 15. One end of an exhaust pipe 32 is connected to the suction port of the ejector 31, and the other end is branched and connected to the body 23 of the crusher 13 and the portions immediately below the upper and lower dampers 26, 27, respectively. The nozzle of the ejector 31 is connected to a combustion air supply pipe 33.

Next, the waste incineration process will be described with reference to FIG. The refuse is sequentially taken out from the hopper 11 by a take-out device 12 by a constant amount and sent to the crusher 13. Crusher 13
Is supplied with superheated steam. Superheated steam is supplied to incinerator 15
Obtained by passing steam from a boiler through a superheater at a pressure of 20 kg / cm 2 and a temperature of 230 ° C. Crusher
In 13, the refuse being crushed is brought into contact with the superheated steam, so that the refuse is dried and degassed. The gas generated in the crusher 13 is sent to the incinerator 15 through the ejector 31 together with the gas leaked from the pyrolysis furnace 14 to the duct 26 side.
The dried and degassed refuse is sent to a pyrolysis furnace 14 where it is heated to about 900 ° C. to be decomposed into solids such as char and tar and gas, and only the solids are sent to an incinerator 15. And finally incinerated.

In the above, the upper and lower dampers 27 and 28 operate so as to open and close the duct 26 alternately, and superheated steam is supplied to the duct 26. Therefore, a small amount of toxic gas leaks from the pyrolysis furnace 14 to the crusher 13. It is. Since the leaked gas is mixed with the combustion air as described above, it is diluted to a safe and thin concentration.

Further, since the ejector 31 is used, a blower or the like for sucking exhaust gas is not required.

[0017]

According to the invention, the refuse is supplied from the hopper to the crusher and crushed by the crusher, so that the refuse is homogenized, and the refuse to be homogenized and the supplied superheated steam are efficiently produced. Contact and efficient drying and degassing of refuse, so that pyrolysis in the pyrolysis furnace is performed efficiently,
High calorie gas can be generated from the pyrolysis furnace.

The gas generated in the pulverizer and the gas leaked from the pyrolysis furnace into the pulverizer are mixed with combustion air to be diluted, and supplied to the combustion furnace in a diluted and safe concentration. Therefore, there is no danger of toxic gas generated in the pyrolysis furnace leaking to the outside.

[Brief description of the drawings]

FIG. 1 is a diagram showing the arrangement of the device of the invention.

FIG. 2 is a block diagram showing the operation of the invented device.

[Explanation of symbols]

 11 Hopper 13 Crusher 14 Pyrolysis furnace 15 Incinerator 29 Steam supply pipe 31 Ejector 32 Exhaust pipe 33 Combustion air supply pipe

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Toshio Hama 5-3-28 Nishikujo, Konohana-ku, Osaka-shi Inside Tachibana Shipbuilding Co., Ltd. (72) Kazunori Kiba 5-28 Nishikujo, Konohana-ku, Osaka-shi No. Tachi Shipbuilding Co., Ltd. (72) Inventor Toshihiko Yasuda 5-3-28 Nishikujo, Konohana-ku, Osaka-shi Within Nitachi Shipbuilding Co., Ltd. (72) Kanji Ota 5-3-1 Nishikujo, Konohana-ku, Osaka-shi No. 28 Inside Tate Shipbuilding Co., Ltd. (72) Inventor Naoko Hirata 5-28 Nishikujo, Konohana-ku, Osaka-shi Inside Tachi Shipbuilding Co., Ltd. (56) References JP-A-63-231111 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] 1. A crusher 13 provided between a hopper 11 and a pyrolysis furnace 14, and superheated steam is supplied to the crusher 13 so as to heat and dry and degas refuse being crushed in the crusher 13. Supply means for supplying the gas and the pyrolysis furnace generated in the crusher 13
The gas leaked from the crusher from 14 is exhausted from the crusher 13,
A mixing means for mixing with combustion air supplied to the combustion furnace 15.