KR200315148Y1 - An exhauster for the calcination furnace - Google Patents

Abstract

The present invention relates to an apparatus for evacuating a calcination furnace, and more particularly, to an apparatus for evacuating a gas generated when heat treatment of raw materials in a calcination furnace.

Exhaust device according to the present invention is a fan 27 mounted on the upper case of the calcination, the hood 26 in close contact with the upper case of the calcination, the lower chamber inlet 28a for the air suction, the upper chamber outlet for gas discharge ( 28b), a chamber lower control valve 29a for adjusting the amount of air sucked into the lower chamber inlet, and a chamber upper control valve 29b for adjusting the amount of gas discharged to the upper outlet of the chamber.

Description

An exhauster for the calcination furnace}

The present invention relates to an exhaust device for a calcination furnace, and more particularly, to an apparatus for exhausting gas generated when heat treatment of a raw material in a calcination furnace.

Exhaust device according to the present invention is a fan 27 mounted on the upper case, the hood 26 in close contact with the upper case, the lower chamber inlet 28a for air intake, the upper chamber 28b for gas discharge, the chamber And a chamber lower control valve 29a for adjusting the amount of air sucked into the lower inlet port, and a chamber upper control valve 29b for adjusting the amount of gas discharged to the chamber upper outlet.

Calcination means a heat treatment to change the raw material physically or chemically, and specifically, an operation of heating the raw material or the raw material mixture to remove crystal water, carbonate decomposition, combustion of organic materials, and the like. The structure of the calcination furnace as shown in FIG. 1 includes a case 11 for maintaining the shape, a refractory 12 serving as a heat insulator, a heating element 13 and a door 15 for raising the inside of the chamber to a desired temperature. consist of. When burning a sample in such a calcining furnace, especially when burning organic matter, VOCs (Volatile Organic Compounds) that are harmful to the human body are generated. The VOC generated in the sample 14 inside the chamber exits through the gap of the refractory 12, and in particular, a large amount of gas is discharged into the gap of the door 15 portion.

Therefore, the exhaust method generally used for the exhaust of such exhaust gas is used in most of the equipment by installing the hood 36 on top of the calcination as shown in FIG. However, in this case, if a lot of gas occurs, there may be some gas leaking to the side. In order to minimize the leakage of gas to the side, it is necessary to increase the amount of exhaust air blow, which causes a large amount of displacement.

The exhaust method improved from FIG. 3 is connected to the hood 46 installed at the top as shown in FIG. 4 so as to completely surround the entire calcination. This method has almost no gas leaking out, but additional equipment is required, which incurs costs and requires more space. The front part is opened when the door 45 is opened and closed. There is a lot of troublesome and inconvenient because it has to disassemble.

In order to solve the above problems, the present invention aims to provide a simple and convenient device for effectively evacuating gas and VOC generated during operation of a sample calcination.

Figure 1 shows the structure of the calcination furnace and the flow of gas therein. (A) Side view, (B) sectional drawing.

Fig. 2 shows a schematic view of a calcination furnace equipped with the calcination furnace exhaust device produced according to the present invention as the calcination furnace exhaust device of the fourth embodiment. (A) Side view, (B) sectional drawing.

Fig. 3 shows a schematic diagram of a calcining furnace exhaust system which is generally used as the calcining furnace exhaust system of the first embodiment. (A) Side view, (B) sectional drawing.

4 is a schematic view of an exhaust device for the calcining furnace of Example 2. FIG. (A) Side view, (B) sectional drawing.

<Description of the symbols for the main parts of the drawings>

11, 21, 31, 41: Case 12, 22, 32, 42: Refractory material (insulation material)

13, 23, 33, 43: heating elements 14, 24, 34, 44: samples

15, 25, 35, 45: doors 26, 36, 46: hood

27: fan 28a: lower chamber inlet

28b: chamber upper outlet 29a: chamber lower control valve

29b: Chamber upper control valve

The present invention is a fan 27 mounted on the upper case to the calcination, the hood 26 in close contact with the upper case to the calcination, the lower chamber inlet 28a for air intake, the upper chamber outlet 28b for gas discharge, the chamber The chamber lower control valve 29a for adjusting the amount of air sucked into the lower inlet and the chamber upper control valve 29b for adjusting the amount of gas discharged to the upper outlet of the chamber are related to an exhaust device for a calcination furnace.

In addition, the present invention relates to a calcining furnace exhaust system, characterized in that the fan 27 installed in the upper case of the calcination to lift the gas escaped between the refractory to the hood 26 of the upper.

In addition, the present invention relates to an exhaust device for a calcining furnace, characterized in that the inlet port (28a) is formed in the lower chamber and the amount of air sucked in by adjusting the lower valve (29a).

In addition, the present invention provides a chamber upper outlet 28b so as to quickly exhaust when a large amount of gas is generated in the chamber during calcination, and controls the amount of air discharged by adjusting the upper valve 29b. The present invention relates to an exhaust device for a calcining furnace.

In addition, the diameter of the upper valve (29b) and the lower valve (29a) is about 1 to 5 inches, preferably about 2 inches to the exhaust device for the calcination furnace, the size of the diameter is the size of the sample And the amount of VOC generated.

Commonly used exhaust system adopts a method of exhausting to a fan connected to a hood without an exhaust port or a separate exhaust device, and there is no air inlet, so air control is not smooth. Therefore, the present invention has devised an exhaust device that can effectively exhaust the gas and intake of external air at the time of calcination.

Calcination requires an adequate air supply, especially when burning organics. However, when air is supplied, it is difficult to uniformly calcinate due to non-uniform temperature distribution because it causes a sudden change in temperature by calcining. Therefore, in the present invention, the lower control valve 29a is adopted for proper air supply control.

On calcination most of the gas escapes through the upper outlet of the chamber, but some also exit through door openings or refractory gaps. The gas escaped through the refractory gap is sucked up into the hood through the fan mounted on the upper part of the space between the refractory and the case. In addition, the gas escaped to the door is sucked up between the hood and the case to be exhausted.

In addition, even when VOC occurs, most of the gas is devised so that the gas is exhausted into the hood through the upper chamber outlet, and when a large amount of gas suddenly emerges, it can escape through the upper chamber outlet 28b. The amount of gas to be adjusted is also possible through the chamber upper control valve (29b).

Hereinafter, the specific configuration of the present invention through the embodiment will be described in detail. However, the scope of the present invention is not limited only to the description of these examples.

Example 1 Exhaust Device for Calciner of FIG.

The hood 36 was installed at regular intervals from the case 31 and the calcination furnace. Considering the gas of the door part and the side, a hood designed to be wider than the case area was installed to exhaust the exhaust gas generated in the calcination furnace.

Example 2 Exhaust Device for Calciner of FIG.

After installing the hood 46 wider than the case 41 at the upper part of the calcination furnace at regular intervals, the barrier wall was formed from the edge of the hood 46 to the ground in all directions to block the exhaust gas from the outside by calcination. .

Example 3 Calcination Furnace Exhaust System Modified in FIG.

The hood was installed at the top of the calcination furnace, and the barrier wall was set up from the edge of the hood to the ground in all directions, and the curtain was installed at the door part of the calcination furnace to exhaust the exhaust gas by the calcination.

Example 4 Exhaust Device for Calciner of FIG.

The hood 26 is made of the same size as the case 21 by the calcination, but the door portion is produced by extending the protruding length of the door 25. This hood is installed in close contact with the case by calcination, and then four pans 27 with a diameter of 10 cm are installed at the corners of the case 21 at the top of the calcination case. ) To control the discharge volume. In addition, an air inlet 28a was installed below the sample 24, and the intake amount was adjusted by the valve 29a.

smell Displacement Workability Installation fee (cost) Example 1 Very severe very big Very good Very cheap Example 2 Almost none Big Bad Very high Example 3 Severe Big Great height Example 4 Almost none Very small Very good cheap

The exhaust device for the calcining furnace according to the present invention can be effectively exhausted by a fan mounted on the upper part of the case, and can control the amount of air that enters the chamber by the lower chamber inlet and the control valve. As a result, most of the gas generated in the chamber can be discharged to the hood. In addition, door opening and closing is convenient, installation cost is low, and space is saved.

Therefore, the present invention can provide an exhaust device for a calcination furnace that can effectively discharge the gas and VOC generated in the calcination furnace at a simple and low cost.

Claims (5)

A fan 27 mounted on the upper case of the calcination furnace, a hood 26 in close contact with the upper case of the calcination furnace, a lower chamber inlet 28a for air intake, an upper chamber 28b for exhausting gas, and a lower chamber inlet The chamber lower control valve (29a) for adjusting the amount of air sucked in and the exhaust chamber for the calciner, characterized in that consisting of a chamber upper control valve (29b) for adjusting the amount of gas discharged to the upper outlet of the chamber. 2. The calcination furnace exhaust system according to claim 1, wherein the fan (27) installed at the upper part of the case for calcination sucks the gas escaped between the refractory materials into the hood (26) at the upper part. 2. The calcination furnace exhaust apparatus according to claim 1, wherein an inlet (28a) is formed in the lower part of the chamber and the amount of air sucked in is adjusted by adjusting the lower valve (29a). The method according to claim 1, wherein the chamber upper outlet 28b is made so as to quickly exhaust when a large amount of gas is generated in the chamber during calcination, and the amount of air discharged by adjusting the upper valve 29b is adjusted. An exhaust device for a calcination furnace, characterized in that. 2. The calcining furnace exhaust system according to claim 1, wherein the diameters of the upper valve (29b) and the lower valve (29a) are 1 to 5 inches.