KR101854341B1 - Burn-Off Unit with Emitting Combusted Oil Vapor, Debris and Thinner by Jet Fan During Heat Treatment - Google Patents

Abstract

The present invention relates to a burn-off unit for suctioning, burning, and discharging oil vapor generated while oil remaining on a surface of a product after a heat treatment process is evaporated by heat. According to an embodiment of the present invention, the burn-off unit includes a suction port for oil vapor inflow, a combustion chamber equipped with a burner, a discharge port for combustion gas discharge, a combustion gas discharge pipe, a jet pipe connected to the combustion gas discharge pipe, and a jet fan mounted at the end of the jet pipe. According to the present invention, in the burn-off unit for discharging oil vapor, other foreign substances, and the combustion gas of a thinner generated in a heat treatment process by using a jet fan, the pressure difference through the jet fan causes the oil vapor inflow into the combustion chamber and combustion gas discharge. By preventing the wing of the jet fan from coming into direct contact with the oil vapor or the combustion gas, a decline and loss in combustion gas discharge function attributable to damage to the jet fan can be prevented.

Description

(Burn-Off Unit with Emitting Combusted Oil Vapor, Debris and Thinner during Jet Fan During Heat Treatment) that discharges vapor and other foreign substances and thinner combustion gases generated in a heat treatment process using a jet fan,

The present invention is characterized in that a vaporizer generated when oil remaining on the surface of a product after heat treatment is evaporated by heat and a thinner generated in a paint used for coating the surface of the product are introduced into a combustion chamber, The present invention relates to a burn-off unit, and more particularly to a burn-off unit in which a jet pipe equipped with a jet fan is tilted to the side of a combustion gas exhaust pipe to generate a pressure difference in a combustion gas exhaust pipe by operation of a jet fan, Off unit for discharging the combustion gas of the vapor generated in the heat treatment process by using a jet fan in which suction of the combustion gas and discharge of the combustion gas occur.

Generally, a process of changing a phase of a material through heating or cooling for the purpose of improving the characteristics of a material is called a heat treatment. In general, a heat treatment process includes a quenching process for rapidly cooling a heated high temperature material, Is heated at a low temperature to make it in a stable state. In this case, water or oil is mainly used as a cooling agent for quenching.

When water is used as a coolant in the quenching process, the cooling rate of the material is high and a large hardness can be obtained. However, surface cracking due to quenching may occur depending on the material, and quenching with oil is performed to prevent quenching cracking. The quenching oil remaining on the surface of the quenched product is vaporized by heat and the vapor generated by the quenching oil is scattered to the surroundings to cause environmental pollution and worker's bronchial diseases.

In order to solve such a problem, in Korean Utility Model Registration No. 20-0148520, when the quenched product is introduced into the interior by tempering and the product is heated at a low temperature, when vapor is generated in the quenching oil remaining in the product, The present invention proposes a device for burning and removing a vapor of an internal vaporizer by means of tempering while burning it with a combustor. However, in addition to a tempering process in which low-temperature heating occurs, a quenching oil vapor is generated in the quenching process, So that even when the quenched product is cooled, the quench oil remains at a high temperature sufficient to vaporize the quench oil. Thus, even when the quenched product is transferred to the tempering furnace, the vapor of the quench oil is scattered around, To recover and remove the generated vapor There was a need to provide additional off unit.

In addition, a thinner used as a diluent of a paint for coating the surface of a product is volatile, and the thinner evaporated from the paint spreads in the air and is likely to be sucked into the worker. When the thinner is inhaled, It has been necessary to inhale and remove the thinner that has evaporated during the heat treatment process with the vapor through the burn-off unit, which is a toxic substance that causes dizziness, severe loss of consciousness or may result in death.

In the conventional method, when the burn-off unit is installed in the process of transferring the quenching process and the product to the tempering furnace, the recovery of the vapor and the discharge of the combustion gas are performed through the blowing fan. When the blowing fan is installed in the direction of the inlet of the combustion chamber, Various foreign substances included in the air are adhered to the air blowing fan so that the function of the air blowing fan may be deteriorated. If the air blowing fan is installed in the direction of the combustion chamber outlet, there is a problem that the blowing fan is damaged by the high temperature combustion gas generated in the combustion chamber .

In order to prevent the deterioration of the function of the blowing fan due to the foreign substance or the damage of the blowing fan due to the high temperature combustion gas, Korean Patent Registration No. 10-0167805 discloses that a cyclone dust collecting duct of a snail- A jet is generated in the combustion chamber to cause a pressure drop so that the combustion gas can be easily discharged.

However, in the jet generating apparatus of Patent Publication No. 10-0167805, in order to increase the pressure drop amount generated by the jet, a plurality of snail type dust collecting ducts should be connected in parallel, and a jet pipe and a jet fan Therefore, if the weight of the exhaust gas pipe increases, the possibility of breakage at the lower end is increased due to the structural characteristics of the vertically long combustion gas exhaust pipe, so that additional cost is incurred to reinforce the structure of the exhaust gas exhaust pipe. The vertical jet generated through the gap of 1 ~ 2mm formed between the snail type dust collector and the combustion gas exhaust pipe does not generate sufficient pressure difference to introduce the vapor of the quenching oil vaporized in the product into the combustion chamber and eventually a separate blower is installed Doing the problem with the existing burn-off unit It was not.

Korea Registered Utility Model No. 20-0148520 Korean Patent Publication No. 10-0167805

In the embodiment of the present invention, since the blades of the jet fan are not in direct contact with the vapor and the combustion gas, when the blowing fan is attached to the inlet port as in the existing burn-off unit, the vapor and various foreign substances stick to the blowing fan, Or a problem that the blowing fan is damaged by the heat of the combustion gas when the blowing fan is attached to the exhaust pipe of the combustion gas and the function of discharging the combustion gas is lost.

In an embodiment of the present invention, it is an object of the present invention to prevent explosion from occurring at the end portion of a combustion gas exhaust pipe, which is generated when a flame generated in a combustion chamber rises on a combustion gas exhaust pipe.

In the embodiment of the present invention, the supply amount of gas and air supplied to the combustion chamber is controlled according to the internal temperature of the combustion chamber, thereby preventing overheating of the combustion chamber.

In the embodiment of the present invention, by controlling the suction speed of the vapor and the discharge speed of the combustion gas according to the internal temperature and flow rate of the combustion gas exhaust pipe, incomplete combustion of the thinner occurs in the paint used for coating the surface of the product, And to prevent the occurrence of such a problem.

In the embodiment of the present invention, the amount of heat energy lost to the outside of the combustion chamber by conduction and radiation is minimized, and the energy efficiency is improved by increasing the amount of waste heat recovered from the combustion gas.

According to an embodiment of the present invention, there is provided an air purifier comprising: an air inlet for introducing vapor, foreign matter, and thinner; A combustion chamber in which a burner in which a gas supply pipe is connected to one side, a valve in which outside air is introduced is mounted on a side surface of the burner, a combustion chamber in which the introduced vapor, foreign substances and thinner are burned by the burner; An exhaust port connected to an upper portion of the combustion chamber to exhaust the combustion gas; A combustion gas exhaust pipe connected to the exhaust port and discharging the non-toxic combustion gas into the atmosphere; And a jet pipe connected obliquely to the side surface of the combustion gas exhaust pipe and equipped with a jet fan at a distal end thereof.

According to an embodiment of the present invention, a fin tube having a plurality of fins formed on a surface thereof is connected to a recovered waste heat supply pipe, passes through a lower side surface of a combustion gas exhaust pipe, and a fin tube and a recovered waste heat supply pipe are connected to a waste heat recovery pipe And a heat exchanger is connected to the heat exchanger so that waste heat generated in the combustion process is recovered through the fin tube and supplied to the recovered waste heat supply pipe through the waste heat recovery pipe.

According to the embodiment of the present invention, the fin tube is bent so that the direction of transfer of the fluid flowing in the fin tube can be switched in the opposite direction, so that one fin tube passes through the combustion gas exhaust tube more than twice.

According to an embodiment of the present invention, the fin tube inlet portion of the fin tube, through which the low-temperature fluid enters, is disposed at the lower portion of the heat exchanger, and the fin tube outlet portion through which the heated high-temperature fluid flows passes through the heat exchanger As shown in FIG.

According to an embodiment of the present invention, an air inlet is formed on the side surface of the exhaust pipe to block the flame from entering the combustion chamber by introducing outside air.

According to the embodiment of the present invention, the first thermocouple is mounted on the upper portion of the combustion chamber, and the first thermocouple is connected to the control panel, and the gas supply amount of the gas supply pipe and the amount of the recovered waste heat supply pipe The preheated air supply is regulated by the control panel.

According to the embodiment of the present invention, the control panel is operated so that the internal temperature of the combustion chamber is maintained in the range of 600 to 1200 ° C.

According to the embodiment of the present invention, the second thermocouple and the flow rate meter are mounted on the side of the combustion gas exhaust pipe, the damper is mounted on the center of the jet pipe, the second thermocouple, the flow rate meter and the damper are connected to the control panel, 2 The discharge rate of the combustion gas is controlled by controlling the opening amount of the damper by the control panel according to the internal temperature of the combustion gas exhaust pipe measured by the thermocouple and flow meter and the flow rate of the combustion gas.

According to an embodiment of the present invention, a heat insulating layer made of ceramic fiber is formed on the intake port, the combustion chamber, and the exhaust port inner wall.

According to the embodiment of the present invention, the area between the inner walls of the heat insulating layer gradually increases toward the heat exchanger.

According to an embodiment of the present invention, the gas supplied to the gas supply pipe is a liquefied natural gas (LNG).

According to an embodiment of the present invention, a pressure difference is generated in a combustion gas exhaust pipe through a jet fan mounted on a side surface of a combustion gas exhaust pipe so that the suction of the vapor into the combustion chamber and the discharge of the combustion gas occur, It is possible to reduce the performance of the blowing fan and to prevent the blowing fan from being blown out to the exhaust gas exhaust pipe. In addition, when the blowing fan is attached to the intake port as in the conventional burn-off unit, There is an effect that it is possible to prevent the blowing fan from being damaged by the heat of the combustion gas and losing the function of exhausting the combustion gas.

According to the embodiment of the present invention, the waste heat is recovered from the fluid in the fin tube heated by the exhaust gas generated in the combustion chamber and supplied to the inside of the combustion chamber, thereby improving the energy efficiency of the burn-off unit.

According to the embodiment of the present invention, a heat insulating layer made of a ceramic fiber material is formed on the inner wall of the combustion chamber to minimize the amount of heat energy lost to the outside of the combustion chamber by conduction and radiation, and the area between the inner walls of the heat insulating layer gradually increases toward the heat exchanger It is possible to improve the energy efficiency by increasing the amount of waste heat recovered by maximizing the combustion gas and the portion where waste heat recovery of the fin tube occurs.

According to an embodiment of the present invention, the fin tube provided in the heat exchanger is bent so that one fin tube passes through the combustion gas exhaust tube more than twice, and the fin tube has a fluid inlet portion in which a low temperature fluid is placed at a lower portion of the heat exchanger, By arranging the fluid outlet portion heated by the combustion gas and passing the high temperature fluid through the heat exchanger one or more times, the fluid flow and the heat exchange by the convection in the fin tube can be generated more smoothly, It is possible to further increase the recovery rate of the waste heat generated from the waste heat.

According to the embodiment of the present invention, it is possible to prevent the flame generated in the combustion chamber from rising on the combustion gas exhaust pipe through the external air introduced from the air inlet formed on the side of the combustion gas exhaust pipe, thereby preventing the explosion from occurring at the end of the combustion gas exhaust pipe. There is an effect.

According to the embodiment of the present invention, the temperature inside the combustion chamber is measured through a thermocouple installed in the combustion chamber, and the amount of air preheated by the gas supplied to the combustion chamber and the recovered waste heat through the burner is controlled according to the measured temperature, There is an effect that overheating of the battery can be prevented.

According to the embodiment of the present invention, the opening amount of the damper is adjusted according to the internal temperature and the flow rate of the combustion gas exhaust pipe measured through the thermocouple and the flow rate meter installed on the side of the combustion gas exhaust pipe, It is possible to prevent occurrence of incomplete combustion of vapor and other foreign matter.

According to the embodiment of the present invention, when the gas supplied to the gas supply pipe is made of LNG, the LNG gas that is lighter than air at the time of leakage is dispersed into the air, thereby preventing an explosion accident.

1 is a view showing a configuration of a burn-off unit according to an embodiment of the present invention.
2 is a view showing a configuration of a heat exchanger according to an embodiment of the present invention.
3 is a view showing a bent structure of a fin tube according to an embodiment of the present invention.
4 is a view illustrating a structure of an air inlet according to an embodiment of the present invention.
5 is a view showing a first thermocouple installation structure of a combustion chamber according to an embodiment of the present invention.
6 is a view showing an installation structure of a second thermocouple and flow meter according to an embodiment of the present invention.
7 is a view showing a structure of a heat insulating layer formed in a combustion chamber according to an embodiment of the present invention.
8 is a diagram showing an inverted triangular cross-sectional structure of a heat insulating layer according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The present invention will be described in detail with reference to the portions necessary for understanding the operation and operation according to the present invention. In describing the embodiments of the present invention, description of technical contents which are well known in the art to which the present invention belongs and which are not directly related to the present invention will be omitted. This is for the sake of clarity of the present invention without omitting the unnecessary explanation.

In describing the constituent elements of the present invention, the same reference numerals may be given to constituent elements having the same name, and the same reference numerals may be given to different drawings. However, even in such a case, it does not mean that the corresponding component has different functions according to the embodiment, or does not mean that it has the same function in different embodiments, and the function of each component is different from that of the corresponding embodiment Based on the description of each component in FIG.

Also, the technical terms used herein should be interpreted in a sense generally understood by a person skilled in the art to which the present invention belongs, unless otherwise defined in this specification, and it should be understood that an overly comprehensive It should not be construed as a meaning or an overly reduced meaning.

Furthermore, the singular forms " a " as used herein include plural referents unless the context clearly indicates otherwise. In the present application, the term "comprising" or "comprising" or the like should not be construed as necessarily including the various elements or steps described in the specification, Or may be further comprised of additional components or steps.

As shown in FIG. 1, the structure of the embodiment of the present invention is such that, as shown in FIG. 1, the foreign substances introduced together with the vapor and vapor generated in the product and the foreign materials introduced into the combustion chamber And a burner 24 for burning vapors and other foreign substances and thinner is mounted on one side of the combustion chamber 20, And a valve 25 for introducing outside air into the combustion chamber 20 is mounted on the side surface of the burner 24. A gas supply pipe 22 through which gas such as fuel is supplied to the burner 24 is connected.

A jet pipe 60 is connected to the side of the combustion gas exhaust pipe 40 in an oblique manner and a jet pipe 60 is connected to the end of the jet pipe 60. [ The fan 61 is mounted.

In another embodiment of the present invention, as shown in FIG. 2A, a heat exchanger 50 passes across a combustion gas exhaust pipe 40 at a lower portion of a combustion gas exhaust pipe 40 according to the first embodiment, and a burner 24 A plurality of fins 52 are formed on the surface of the heat exchanger 50 as shown in FIG. 2B, and a plurality of fins 52 are formed on the inner surface of the heat exchanger 50, And the fin tube 51 is connected to the recovered waste heat supply pipe 23 by a waste heat recovery pipe 53 not shown in the figure so as to be connected to the fin tube 51 And to supply the burner 24 with the air preheated by the recovered waste heat.

3, the fin tube 51 according to the first embodiment includes a heat exchanger 50 (not shown) so that the direction of the fluid flowing inside the fin tube 51 can be switched in the opposite direction, ) Edge so that one fin tube 51 passes through the heat exchanger 50 across the combustion gas exhaust pipe 40 more than once.

In another embodiment of the present invention, the inlet portion of the fin tube 51 through which the low temperature fluid enters is disposed at the lower portion of the heat exchanger 50, and the fin tube 51) outlet portion is disposed on the upper portion of the heat exchanger (50).

In another embodiment of the present invention, as shown in FIG. 4, an air inlet 41 may be formed on a side surface of the combustion gas exhaust pipe 40.

5, the first thermocouple 26 is mounted on an upper portion of the combustion chamber 20, and the first thermocouple 26 is connected to a control panel 70 (not shown) Lt; / RTI >

6, a second thermocouple 42 and a flow rate meter 43 are mounted on the side surface of the combustion gas exhaust pipe 40, and a damper (not shown) is disposed at the center of the jet pipe 60 And the second thermocouple 42 and the flow meter 43 and the damper 62 may be connected to the control panel 70 not shown in the figure.

In another embodiment of the present invention, as shown in FIG. 7, a heat insulating layer 21 made of ceramic fiber may be formed on the inner wall of the intake port 10, the combustion chamber 20, and the exhaust port 30.

In another embodiment of the present invention, as shown in FIG. 8, the area between the inner walls of the heat insulating layer 21 may be gradually increased toward the heat exchanger 50.

An operation method according to embodiments of the present invention configured as described above will be described as follows.

In the embodiment of the present invention, as the heat-treated product is transported below the intake port 10 through a conveyor or the like, oil mist and other foreign substances generated in the oil remaining on the surface of the product and thinner generated in the paint used for surface coating of the product, The gas supplied through the gas supply pipe 22 and the air supplied by the valve 25 are burned by the burner 24 and introduced into the combustion chamber 20 Thereby completely burning the vaporized vapor or the like.

The discharge of the combustion gas through the intake port 10 and the foreign matter and the thinner and the exhaust of the combustion gas through the combustion gas exhaust pipe 40 are caused by the operation of the jet fan 61. Specifically, A jet is generated in an upward direction of the combustion gas exhaust pipe 40 by an inclined direction of the jet pipe 60 to be discharged to the outside of the combustion gas exhaust pipe 40 A negative pressure is generated in the lower portion of the coupling portion between the combustion gas exhaust pipe 40 and the jet pipe 60 so that the flow of the vapor or the like through the intake port 10 and the discharge of the combustion gas inside the combustion chamber 20 occur .

The wing of the jet fan 61 is prevented from directly contacting the inside of the combustion gas exhaust pipe 40 through the jet pipe 60 and the jet fan 61 with the vapor or other foreign matter or the combustion gas, When the blowing fan is attached to the intake port as in the case of the burn-off unit of the blowing fan, the performance of the blowing fan is adhered to the blowing fan, So that the combustion gas discharge function is prevented from being lost.

In another embodiment of the present invention, the combustion gas generated by burning the thinner contained in the coating material used for painting the oil vapor and other foreign substances and the product introduced into the combustion chamber 20 through the intake port 10 is discharged through the exhaust port 30 The waste heat of the combustion gas is recovered by the heat exchanger 50 that enters the combustion gas exhaust pipe 40 and passes across the lower portion of the exhaust gas exhaust pipe 40. The waste heat recovery pipe 23 is connected to the burner 24, The heat exchanger 50 is composed of a fin tube 51 provided with a plurality of fins 52 so as to increase the contact area with the combustion gas so as to increase the amount of waste heat recovered. The waste heat recovered in the heat exchanger 50 is transferred by the fluid flowing inside the fin tube 51 and is discharged to the recovered waste heat supply pipe 23, Thereby improving the energy efficiency of the burn-off unit. And to be able to.

At this time, the fluid flowing in the fin tube 51 is heated by the combustion gas, and then the waste heat is transferred to the air supplied to the collected waste heat supply pipe 23 to cause preheating. Particularly, The air supplied to the recovered waste heat supply pipe 23 can be directly heated by the waste heat generated in the combustion gas to be supplied to the recovered waste heat supply pipe 23.

Another embodiment of the present invention is that the fin tube 51 is bent such that the direction of the fluid flowing inside the fin tube 51 can be switched in the opposite direction so that the single fin tube 51 is connected to the combustion gas exhaust pipe 40, So that the number and time of collecting the waste heat generated from the combustion gas by the fluid passing through the inside of the fin tube 51 increases, thereby further improving the energy efficiency of the burn-off unit.

In another embodiment of the present invention, the fin tube 51 bent to allow the combustion gas exhaust pipe 40 to pass through the combustion gas exhaust pipe 40 is arranged such that the fluid inlet portion through which the low temperature fluid enters is disposed below the heat exchanger 50, By arranging the fluid outlet portion heated by the combustion gas and passing the high temperature fluid through the heat exchanger 50 while passing through the unit 50 more than once, the flow of the fluid by the convection in the fin tube 51 and the heat exchange So as to be more smoothly generated.

Another embodiment of the present invention is that the air inlet 41 is formed on the side surface of the combustion gas exhaust pipe 40 so that the outside air is blown by the negative pressure acting in the combustion gas exhaust pipe 40 by operating the jet fan 61, The flame generated in the combustion chamber 20 moves along the combustion gas exhaust pipe 40 by the operation of the jet fan 61 and is intercepted from being discharged to the outside of the combustion gas exhaust pipe 40 Thereby preventing the explosion from occurring at the end of the combustion gas exhaust pipe (40).

The amount of gas supplied to the gas supply pipe 22 according to the internal temperature of the combustion chamber 20 measured by the first thermocouple 26 mounted on the combustion chamber 20 by the control panel 70, The amount of the preheated air supplied to the combustion chamber 23 is adjusted so that the internal temperature of the combustion chamber 20 can maintain an appropriate level at which vaporization of the vapor and other foreign matter occurs.

Particularly, the control panel 70 controls the opening amount of the gas supply pipe 22 and the recovered waste heat supply pipe 23 so that the internal temperature of the combustion chamber 20 can be maintained in the range of 600 to 1200 ° C., And to prevent toxic gas emissions due to incomplete combustion of other foreign matter.

The amount of opening of the damper 62 through the control panel 70 depends on the internal temperature of the combustion gas exhaust pipe 40 and the flow rate of the combustion gas measured by the second thermocouple 42 and the flow meter 43 So that the occurrence of incomplete combustion of the vapor and foreign matter can be prevented by adjusting the flow rate of the vapor in the inlet 10 and the discharge rate of the combustion gas in the combustion gas exhaust pipe 40.

Another embodiment of the present invention relates to a method of manufacturing a semiconductor device having thermal energy dissipated to the outside of a combustion chamber 20 by conduction and radiation through an insulating layer 21 made of ceramic fiber formed on an inner wall of an intake port 10 and a combustion chamber 20 and an exhaust port 30 So that the amount can be minimized.

In another embodiment of the present invention, the area between the inner walls of the heat insulating layer 21 gradually increases toward the heat exchanger 50, and the cross-sectional shape inside the combustion chamber 20 forms an inverted triangle. The amount of waste heat recovered can be increased so that the energy efficiency of the burn-off unit can be improved.

Another embodiment of the present invention has an effect of generating an explosion accident by dispersing the gas into the air when the gas is leaked, by using the gas supplied to the gas supply pipe 22 as liquefied natural gas (LNG) which is lighter than air.

Although the embodiments of the present invention have been described with reference to the above description, those skilled in the art will understand that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

It is to be understood, therefore, that the embodiments described above are to be considered in all respects as illustrative and not restrictive, the scope of the invention being described in the foregoing specification as defined by the appended claims and their equivalents, Ranges and equivalents thereof are to be construed as being included within the scope of the present invention.

10: Intake port
20: Combustion chamber
21: insulating layer
22: gas supply pipe
23: Collected waste heat supply pipe
24: Burner
25: Valve
26: First thermocouple
30: Exhaust
40: Combustion gas exhaust pipe
41: Air inlet
42: second thermocouple
43: Flow meter
50: heat exchanger
51: Finned tube
52:
53: waste heat recovery pipe
60: jet pipe
61: Jet Fan
62: damper
70: control panel

Claims (12)

A burn-off unit for burning vapors generated from oil remaining on the surface of a product during heat treatment, various foreign substances, and thinner generated in a paint used for coating a product to remove toxicity and discharge combustion gas,
An intake port 10 through which vapor, foreign matter, and thinner are introduced;
A burner 24 to which a gas supply pipe 22 is connected is mounted on one side and a valve 25 to which external air flows is mounted on a side surface of the burner 24 and connected to an upper portion of the intake port 10, A combustion chamber (20) for burning vapor, foreign matter and thinner by a burner (24);
An exhaust port 30 connected to the upper portion of the combustion chamber 20 to exhaust the combustion gas;
A combustion gas exhaust pipe (40) connected to the exhaust port (30) and discharging the non-toxic combustion gas into the atmosphere; And
And a jet pipe 60 obliquely connected to a side surface of the combustion gas exhaust pipe 40 and equipped with a jet fan 61 at a distal end thereof
Off unit for discharging the combustion gas of vapor, other foreign matter, and thinner generated in the heat treatment process by using a jet fan, wherein the jet fan is prevented from directly contacting the wing of the jet fan with the vapor, foreign matter or combustion gas. The method according to claim 1,
A fin tube 51 having a plurality of fins 52 formed on the surface thereof is connected to the burner 24 through a recovered waste heat supply pipe 23 and passes across the lower side surface of the combustion gas exhaust pipe 40, 51 and the recovered waste heat supply pipe 23 are connected to each other by the waste heat recovery pipe 53 so that the waste heat generated in the combustion process is recovered through the fin tube 51 and collected through the waste heat recovery pipe 53 The burn-off unit discharges the combustion gas of vapor, other foreign substances, and thinner generated in the heat treatment process by using the jet fan, which is provided with a heat exchanger (50). 3. The method of claim 2,
The fin tube 51 is bent so that the direction of the fluid flowing inside the fin tube 51 can be switched in the opposite direction so that one fin tube 51 is configured to pass the combustion gas exhaust tube 40 more than twice And a burn-off unit for discharging vapor and other foreign substances generated in the heat treatment process and the combustion gas of the thinner by using the jet fan. The method of claim 3,
The fin tube 51 has a fin tube 51 disposed at the lower portion of the heat exchanger 50 at the inlet of the fin tube 51 for receiving the low temperature fluid and a fin tube 51) is disposed at an upper portion of the heat exchanger (50). The burn-off unit discharges the combustion gas of vapor, other foreign matter, and thinner generated in the heat treatment process using the jet fan. The method according to any one of claims 1 to 3,
And an air inlet (41) is formed at a side surface of the exhaust pipe (40) to block the flame from entering the combustion chamber by introducing outside air into the side surface of the exhaust pipe (40) And a burn-off unit for discharging the combustion gas of the thinner. 3. The method of claim 2,
The first thermocouple 26 is mounted on the upper portion of the combustion chamber 20 and the first thermocouple 26 is connected to the control panel 70 so that the temperature of the combustion chamber 20 measured by the first thermocouple 26 The gas supply amount of the gas supply pipe 22 and the preheated air supply amount of the recovered waste heat supply pipe 23 are regulated by the control panel 70. The jet fan is used to control the flow of the vapor and other foreign matter and thinner Off unit for discharging the combustion gas in the burn-off unit. The method according to claim 6,
The control panel 70 is operated such that the internal temperature of the combustion chamber 20 is maintained in the range of 600 to 1200 ° C. The jet fan is used to discharge the combustion gas of the vapor and other foreign materials and thinner generated in the heat treatment process Burn off unit. The method according to any one of claims 1 to 3,
A second thermocouple 42 and a flow rate measuring device 43 are mounted on the side surface of the combustion gas exhaust pipe 40. A damper 62 is mounted on a center portion of the jet pipe 60, The measuring instrument 43 and the damper 62 are connected to the control panel 70. The measuring instrument 43 and the damper 62 are connected to the control panel 70 to control the temperature of the combustion gas exhaust pipe 40 measured by the second thermocouple 42 and the flow meter 43, And the discharge rate of the combustion gas is controlled by adjusting the opening amount of the damper (62) by the discharge fan (70). The jet fan is used to discharge the combustion gas of the vapor and other foreign materials and thinner generated in the heat treatment process Off unit. The method according to claim 1,
And a heat insulating layer 21 made of ceramic fiber is formed on the inner wall of the combustion chamber 20 and the air outlet 30 of the intake port 10. The jet fan is used to remove vapor and other foreign substances generated in the heat treatment process, Off unit for discharging the combustion gas in the burn-off unit. The method according to any one of claims 2 to 4,
And a heat insulating layer 21 made of ceramic fiber is formed on the inner wall of the intake port 10 and the inner wall of the combustion chamber 20 and the exhaust port 30. The jet fan is used to remove the vapor and other foreign substances generated in the heat treatment process, A burn-off unit for exhausting the combustion gas. 11. The method of claim 10,
And the area between the inner wall of the heat insulating layer (21) is gradually increased toward the heat exchanger (50). The jet fan is used to remove the vapor of the vapor and other foreign substances generated in the heat treatment process, unit. The method according to any one of claims 1 to 3,
Off valve for discharging vapor and other foreign substances generated in the heat treatment process and the combustion gas of the thinner by using the jet fan, wherein the gas supplied to the gas supply pipe 22 is Liquefied Natural Gas (LNG) .

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