JPS61128020A - Solid combustion equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to combustion equipment for burning solid materials.

Conventional technology Traditionally, industrial waste containing non-combustible materials was
The stoker set burner furnace described in 314 Publication and Japanese Utility Model Publication No. 1983-97335M, and the stoker set burner furnace described in Japanese Patent Application Publication No. 54-71877, Japanese Patent Publication No. 59-45886, and Japanese Utility Model Publication No. 1987-59-
The waste was treated using an incinerator configured as described in Publication No. 45887@.

Problems to be Solved by the Invention According to the above-mentioned conventional structure, the object to be combusted is a mixture of a non-combustible solid such as a metal and a combustible substance (including those in which the two coexist separately and those in one body). In some cases, metals such as iron and aluminum were separated and recovered from the combustion residue taken out of the furnace after combustion inside the furnace. In this case, if the material to be combusted has a large amount of non-combustible content and combustible content is intricately intertwined with the non-combustible content, it will not burn completely in the furnace, and the color of the ash produced by combustion will be black, and the unburned content will be Since there is a large amount of fuel, it is easy to cause pollution due to black soot and the like when handling it, and there is also a problem that the combustible content that should be combusted is not completely combusted, resulting in poor energy recovery efficiency.

In particular, in the case of so-called steel tires, where the amount of combustible materials has recently increased, there is a large amount of steel wire in the tire, and as a result, unburnt carbon may accumulate between the meshes of the steel wires, or the presence of steel wires. Because of this, unburned carbon is isolated and becomes discontinuous, resulting in poor flame transfer and heat retention.Originally, if left in a high-temperature area, unburned carbon would burn completely, but combustion does not proceed, resulting in a black color. There was a problem that it remained as ash.

The present invention solves the above-mentioned problems, and when solid materials containing non-combustible solids are burned, the ash and unburned components (unburnt carbon) are reliably separated from the non-combustible metals. The purpose of the present invention is to provide a solid matter combustion facility that can completely burn the solid matter and unburned matter.

Means for solving the problem In order to solve the above problem, the solid matter combustion equipment of the present invention has the following features:
It has a combustion bed that can burn solids on the floor surface and transport the combustion residue of the solids, a head is provided at the lower end of the combustion bed in the direction of transport, and the solids fall through the head. The structure includes a nozzle that applies an airflow of a predetermined energy toward the combustion residue.

After combustion, the solid combustion residue that falls down the lower end of the combustion bed in the transfer direction is blown away by the energy of the airflow ejected from the nozzle. Since non-combustible components such as metals with high specific gravity fall down as they are, only the ash and unburned components can be separated and recovered, and furthermore, by leaving them in the furnace for a certain period of time, they can be completely combusted. This is extremely advantageous in terms of treatment of non-combustible solids and heat recovery efficiency.

Example An embodiment of the present invention will be described below with reference to FIG.

Figure 1 is an overall schematic diagram of solid matter combustion equipment, where 1 indicates solid matter 2.
The solid material 2, such as waste tires, which has been finely cut into a predetermined shape, is fed into the hopper 1 and then transferred to the combustion furnace of the combustion equipment 4 by the bushar 3. Supplied within 5 days. 6 is a damper provided at the entrance of the combustion furnace 5. Reference numeral 7 denotes a combustion bed disposed at the lower part of the combustion furnace 5. The combustion bed 7 is constituted by an endless belt, and the solid matter 2 supplied and placed on the floor of the combustion bed 7 is burned and The combustion residue 2a is transferred horizontally. Reference numeral 8 denotes a nozzle disposed at a drop provided at the lower end 7a of the combustion bed 7 in the transfer direction, and the nozzle 8 applies a predetermined energy from the horizontal direction to the combustion residue 2a falling from the end 7a of the combustion bed 7. Act on the airflow that has. The gas ejected from the nozzle 8 may be air, combustion exhaust gas, or various gases.

Reference numeral 9 denotes a non-burnable matter recovery section provided below the nozzle 8; 10 indicates an unburned matter collection section provided on the downstream side of the nozzle 8 injection direction of the non-combustible matter recovery section 9; The fractional collection section 10 communicates with the combustion furnace 5 to form a flow path 11 for the combustion gas G, and the flow path 11 is directed downward from the end 7a of the combustion bed 7, and the non-combustible matter collection section 9 The passage cross section is narrowed between the part passing the upper part of the combustion furnace 5 and widened greatly at the upper part of the unburned matter collecting part 10, and then narrowed again and directed upward. It communicates with a boiler room 12 provided above.

Reference numeral 13 denotes an electric heating tube arranged in the boiler room 12.

Hereinafter, the effects of the above configuration will be explained.

As the combustion residue 2a of the solid matter 2 burned on the combustion bed 7 falls through the head provided at the end 7a of the combustion bed 7, the airflow injected from the nozzle 8 causes the combustion residue 2a to become ash with low specific gravity and unburned matter. The non-combustible components are blown away and carried downstream along with the flow of combustion gas G passing nearby, while non-combustible components such as metals with high specific gravity are not blown away and fall downward and are collected in the non-combustible component recovery section 9. .

Flow path 11 where ash and unburned content rides on the flow of combustion gas G
is narrow and widely spread out at the upper part of the unburned matter collection section 10, so that ash and unburned matter are reliably carried above the unburned matter collection section 10 by the flow of the combustion gas G with a high flow velocity. After that, it separates from the flow of combustion gas G due to gravity and falls and is collected in the unburned gas collection section 10 below. Unburned matter collection section 10
Since the ash and unburned contents in the boiler are free of non-combustible substances such as metals that impede fire transfer and heat retention effect, the combustion proceeds reliably, and the thermal energy generated by combustion is supplied to the boiler room 12 along with the combustion gas G. be spent effectively.

Although the illustrated example shows that the combustion bed 7 is constituted by an endless belt, it is also possible to use a fixed bed and sequentially transport the materials to be combusted on the fixed bed by a busher.

In this way, according to the above embodiment, the combustion residue 2a of the solid matter falling through the drop provided at the lower end 7a of the combustion bed 7 in the transfer direction is divided into ash, unburned matter, and non-combustible matter such as metal. It can be reliably separated, and the unburned matter can be completely burned in the furnace by leaving it in the furnace for a certain period of time after being separated, and the thermal energy from the combustion is transferred to the combustion gas generated in the combustion furnace 5. It is sent to the boiler room 12 with the flow of G and can be effectively consumed, and is not advantageous in terms of waste treatment or heat recovery efficiency. A cushion is disposed diagonally at an intermediate position between the lower non-combustible material recovery section 9 so that the upper end is located within the flow path 11 of the combustion gas G and the lower end is located above the center of the non-combustible material recovery section 9. A plate 20 is provided, and a nozzle 21 is provided at an intermediate position in the vertical direction between the cushion plate 20 and the end 7a of the combustion bed 7.
a and a lower nozzle 21b, each nozzle 21a
, 21b are arranged to be inclined at the same angle as the cushion plate 20, and the airflow of a predetermined energy injected from the upper stage nozzle 21a acts on the combustion residue 2a that is falling through a head provided at the combustion bed end 7a, The airflow with a predetermined energy injected from the lower nozzle 21b acts on the combustion residue 12a that has fallen onto the upper surface of the cushion plate 20.

According to the above embodiment, the combustion residue 2a of solid matter falling
are first separated according to their specific gravity by the action of the airflow from the upper nozzle 21a, and the combustion residue 2a that has fallen onto the cushion plate 20 is subjected to the action of the airflow from the lower nozzle 21b on the diagonal cushion board 20. Therefore, the remaining reduced weight is completely separated and blown toward the unburned matter collection section 10, and the high specific gravity valve falls and is collected into the unburned matter collection section 9 below, so the falling time becomes longer. Separation effect can be improved.

As described in detail, according to the present invention, the combustion residue of solid matter falling through a head provided at the lower end of the combustion bed in the direction of transfer is caused by the action of the airflow of a predetermined energy injected from the nozzle. , it is possible to reliably separate and recover ash and unburned matter with low specific gravity and unburned matter with high specific gravity, which is advantageous in terms of combustion residue treatment and heat recovery efficiency.

[Brief explanation of drawings]

FIG. 1 is an overall schematic diagram showing one embodiment of the solid matter combustion equipment according to the present invention, and FIG. 2 is a schematic diagram of main parts showing another embodiment. 2... Solid matter, 2a... Combustion residue, 4... Combustion equipment, 7... Combustion bed, 7a... End, 8... Nozzle agent Yoshihiro Morimoto Type 2-1 thing

Claims (1)

[Claims] 1. A combustion bed capable of burning solids on the floor and transporting the combustion residue of the solids, a head provided at the lower end of the combustion bed in the direction of transport, and falling through the head. 1. Solid matter combustion equipment characterized by being provided with a nozzle that applies an airflow of a predetermined energy toward solid matter combustion residue.