JPS6138369B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a flue having a downward flow path portion and a lateral flow path portion connected to the downward opening of the melting chamber is connected to the melting chamber, and the melt is flowed down from the melting chamber through the flue. This invention relates to a melting furnace equipped with a water tank for cooling and solidifying a molten material.

In this type of melting furnace, steam is generated as the melt is supplied downstream to the water tank. Conventionally, the generated steam fills the melt flow path to the water tank, and due to this, steam is generated during the flow. As the molten material cools, some of it adheres to and solidifies on the vertical walls that make up the flow path, and as a result, they grow sequentially and narrow the flow path.
There was a problem that hindered the flow of molten material.

In view of the above points, the present invention prevents the steam generated from the water tank from filling the melt flow downstream path, and prevents the melt from being cooled during its flow due to the generated steam and solidifying on the vertical walls. The purpose is to prevent clogging in the downstream flow.

Next, embodiments of the present invention will be described in detail based on the drawings.

A storage supply section 1 for the material to be processed is introduced into the lower part of the melting chamber A consisting of a combustion chamber 8 through a downward opening 2 formed at approximately the center of the melting chamber A, and the melted material and high-temperature exhaust gas are introduced into the lower part of the melting chamber A consisting of a combustion chamber 8. A secondary combustion chamber B is provided to incinerate and deodorize odor components and discharge them from the flue 3, and a water tank 4 is provided below for cooling the flowing molten material and collecting slag. The melting furnace is configured to incinerate and melt materials to be treated, such as waste, and cool them to recover slag.

The storage supply section 1 includes a descending supply path R ₁ formed between the partition wall 5 and the outer cylinder 6 for the combustion chamber S.
, and a lateral movement path R ₂ connected thereto toward the downward opening 2, and,
The bottom wall 7 of the lateral movement path R ₂ and integral therewith,
The lower part 6a of the outer cylinder 6 is connected to the partition wall 5.
and the upper part 6b of the outer cylinder 6 is configured to be relatively rotationally driven via a drive mechanism 8,
The material to be treated is supplied through the hopper 9 and the damper 10 to the combustion chamber 8 from all around it, and is incinerated and melted by a downward combustion burner 11.

The flue 3 is composed of a descending flow path portion r ₁ connected to the opening 2 and a lateral flow path portion r ₂ connected thereto, and is configured to smoothly discharge exhaust gas.

The water tank 4 is provided so as to be offset from the opening 2, and the melt from the opening 2 is allowed to flow down onto the inclined wall 12 below and to be transmitted from the inclined wall 12 to the vertical wall 13 on the side connected thereto. The structure is such that the water flows down into the water tank 4.

An auxiliary burner 14 is provided on the upper side of the flow path R _{3 from the horizontal flow path portion r 2} of the flue ₃ to the water tank 4, and heats the melt flowing down along the vertical wall 13. The structure is designed to prevent molten material from adhering to and solidifying on the vertical wall 13 due to cooling.

On the way down the flow path R ₃ to the water tank 4, suction ports 16 connected to the suction blower 15 are provided at multiple locations in the circumferential direction on the lower side of the auxiliary burner 14, and the melt is supplied to the water tank 4. A steam exhaust device 17 is configured to discharge the steam generated as the water flows from the upper space of the water tank 4 to prevent the atmospheric temperature in the flow path _R3 from decreasing.

In addition, an air outlet 19 is provided opposite or almost opposite to the suction ports 16 and connected to the air blower 18, and the steam generated from the water tank 4 is sent toward the suction ports 16, so that the steam It is constructed to allow for good discharge.

Furthermore, the present invention is not limited to the melting furnace in which the opening 2 and the water tank 4 are offset as in the above embodiment, but also applies to a type of melting furnace in which the opening 2 and the water tank 4 are arranged concentrically or almost concentrically. Applicable.

In summary, the present invention provides, in the above-mentioned melting furnace, a suction blower 15 connected to a vertical wall 13 forming a passage connecting the flue 3 to the water tank 4. Mouth 1
6..., an air outlet 19 opened at a position corresponding to or almost corresponding to the suction port 16... and connected to the air blower 18, and an auxiliary burner 14 for heating the inside of the passage. Therefore, the following effects occur.

That is, the steam generated as the melt is supplied to the water tank 4 is blocked by the air curtain formed between the ventilation ports 19 and the suction ports 16, and is carried by the suction air. By discharging to the outside, it is possible to prevent the generated steam from filling the melt flow path _R3 , and the atmospheric temperature of the flow path _R3 to the water tank 4 decreases due to the generated steam, causing the melt to melt. It is possible to prevent objects from being cooled while flowing down and solidifying on the vertical walls 13 of the path. Moreover, the auxiliary burner 1
4, the solidification during the flow can be more reliably suppressed, and the melt can be smoothly flowed down into the water tank 4 without clogging.

[Brief explanation of the drawing]

The drawing is an overall vertical sectional view showing an embodiment of a melting furnace according to the present invention. 2... downward opening, 3... flue, 4... water tank,
13... Vertical wall, 14... Auxiliary burner, 15... Suction blower, 16... Suction port, 17... Steam exhaust device, 18... Air blower, 19... Air outlet,
A...melting chamber, _r1 ...downward flow path section, _r2 ...horizontal flow path section.

Claims (1)

[Claims] 1 In the downward opening 2 of the melting chamber A, the descending flow path section r ₁
The melting furnace is equipped with a water tank 4 for cooling and solidifying the molten material flowing down from the melting chamber A through the flue ₃ , which is connected to a flue 3 having a lateral flow path portion r2 connected to the flue 3. A suction port 16 connected to a suction blower 15 is provided in a vertical wall 13 forming a passage connecting from the flue 3 to the water tank 4.
A melting furnace characterized by being provided with an air outlet 19 opened at a position corresponding to or almost corresponding to 6... and connected to an air blower 18, and an auxiliary burner 14 for heating the inside of the passage.