JPS59213793A - Gasification furnace for waste plastic - Google Patents

Abstract

PURPOSE:To provide a gasification furnace capable of utilizing the environment- polluting waste plastics as a fuel source, and furnished with a number of air- feeding holes inclined toward a definite direction to cause gyration in a horizontal plane at the upper part of the combustion chamber, and with a double lid opening alternately to the outside and the inside of the furnace and attached to the inlet port of the raw material. CONSTITUTION:The objective furnace for the gasification of waste plastics has the following structure. A flow path is formed starting from the top of the combustion chamber 1, passing through the descending chamber 2 and the ascending chamber 3 and reaching the exhaust port 4; and a number of air-feeding holes 6 connected to an air feeding path of a compressor, are attached to the upper part of the combustion chamber 1 in a manner inclined toward a definite direction to cause a gyrating flow in a horizontal plane. An ignition burner 7 is attached to the combustion zone, and the inlet port 8 of the raw material is furnished with a double lids 9 and 10 which open alternately to the inside and the outside of the furnace.

Description

DETAILED DESCRIPTION OF THE INVENTION Conventionally, heavy oil has been used as the processing energy for incinerators and deodorizing furnaces for processing fluid waste such as deep urine. However, heavy oil has also become expensive, which is a big burden. Therefore, in order to reduce the above-mentioned burden, the present invention was developed with the intention of utilizing plastic waste as a fuel source.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, the present invention will be described in detail below. Reference numeral 1 in the drawings is a combustion chamber, into which crushed plastic waste is charged and combusted. Although plastics are easy to ignite and burn, they have the disadvantage of generating large amounts of soot and harmful gases. Therefore, a large number of air supply holes 6 are provided in the upper part of the combustion chamber 1, and these air supply holes 6 are designed to introduce air from a compressor through an air supply path 5. Each air supply hole 6 is arranged so that its direction is inclined in a certain swirling direction in a horizontal plane so that the combustion gas swirls. An ignition burner 7 is provided in the lower part of the combustion chamber 1,
A flow path is formed in which the combustion gas follows a descending path 2 and an ascending path 3 from the upper part of the combustion chamber 1 to an exhaust port 4 .

In addition, the raw material inlet 8 is opened alternately to the outside of the furnace and into the inside of the furnace.
A double lid 9.10 is provided. The above-mentioned opening to the inside and outside of the furnace alternately means that the chamber 11 formed between the double lids 9 and 10 is opened to the inside and outside at the same time to prevent flames from spewing out from the inlet, and the lid 9 is opened with the lid 10 closed. , the raw material is introduced into the chamber 11. Next, after closing the tray 9, the lid 10 is opened to allow the raw material in the chamber 11 to fall into the combustion chamber 1.

Therefore, the discharge port 4 is connected to a suction blower, and the suction blower is connected to the suction blower.
It leads to the rotary kiln through the rotary kiln.

In the embodiment shown in the drawings, a large number of air flow branch passages 13 are installed in plural rows on the circumferential wall 12 of a vertical cylinder forming the air flow path 3 in a horizontal plane and inclined in a constant turning direction. Also 14,
15 is an entrance/exit and ash removal port for inspection and repair inside the furnace; 16
．． 16 is a gas cycle! :(It is an ignition burner for shi.

In addition, the ignition burner 7.16 is capable of using not only heavy oil but also waste oil, so a small fuel of about ff12 OA/h is sufficient.Usually, when plastic waste starts to burn on its own, this ignition burner 7.16 It is okay to stop.

Furthermore, the suction blower connected to the discharge port 4 has a power of about 22 kW, and good results have been achieved. The present invention relates to an apparatus constructed as seen in the embodiments described above.

Next, to explain the function of this device, when crushed plastic waste is put into the combustion chamber 1 and ignited and combusted by the ignition burner 7, air is supplied through a large number of air supply holes 6, and the supplied air generates a swirling flow. The soot and smoke are absorbed into the supply air in multiple dimensions to complete combustion and reduce the amount of soot and smoke. temperature 800
Although most harmful substances are removed from the combustion gas at a temperature of 120 °C or higher, in the embodiment of the present invention described above, the temperature of the combustion gas is 120
The temperature reaches 0°C, and the amount of soot and dust in 1 cubic meter of combustion gas is about 0°4g.

In addition to the combustion chamber 1 described above, the swirling flow of gas also occurs in the rising chamber 3 in a horizontal plane, and as a result of centrifugal separation, ash and solids settle to the bottom of the furnace, and gas flows from the descending chamber 2 to the rising chamber. Even when the direction is turned 18° toward the third direction, solid matter is separated by the action of centrifugal force and deposited on the bottom of the furnace, which has a great effect of improving gas purity.

Therefore, by carrying out the present invention, the obtained hot gas can be led to a rotary kiln and used as an effective energy source for processing fluid waste, and on the other hand, it is also useful for processing plastic waste that tends to cause pollution. .

[Brief explanation of drawings]

The drawings illustrate embodiments of the invention. FIG. 1 is a longitudinal sectional view thereof, and FIG. 2 is a sectional view taken along line AA in FIG. 1 Combustion chamber 2 Descending chamber 3 Rising chamber 4 Discharge port 5 Air supply path 6 Air supply hole 7 Ignition)＼-ner 8 Raw material input port 9.1〇 Double lid patent applicant Taitoji Saito (one person) Representative Patent attorney Takehiro Furuta

Claims (1)

[Claims] A descending chamber (2) and a rising chamber (3) are formed from the upper part of the combustion chamber (1).
) to form a flow path leading to the outlet (4),
A large number of air supply holes (6) connected to the air supply path (5) from the compressor are provided in the upper part of the combustion chamber (1) so that the horizontal inner surface is inclined in a constant rotation direction, and an ignition burner (7) is provided in the fire layer part.
A plastic waste gasification furnace is provided with a double I (9, 10) which alternately opens to the outside and inside of the furnace to the raw material inlet (8).