KR101483498B1 - Wash tower for use in industrial heat-system - Google Patents

Abstract

The present invention relates to an apparatus for efficiently removing liquid droplets in a combustion gas generated in an industrial heating system and preventing environmental pollution caused by a liquid droplet in an exhaust gas discharged into the atmosphere.
The exhaust gas purifying apparatus according to the present invention includes an exhaust gas cleansing water discharging portion disposed at a lower position, an exhaust gas cleaning portion positioned above the exhaust gas cleansing water discharging portion to lower the temperature of the exhaust gas and adhere dust, A droplet centrifuge for separating and removing liquid droplets in the exhaust gas after removing the harmful substances from the exhaust gas filtering unit, And an exhaust gas exhaust pipe through which the exhaust gas from which the droplets are separated is discharged from the droplet centrifuge.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an exhaust gas purification tower suitable for industrial heating equipment,

The present invention relates to an exhaust gas purifying cleaning tower, and more particularly, to an exhaust gas purifying cleaning tower which efficiently removes a droplet contained in an exhaust gas of an industrial heating plant, discharges the exhaust gas whose droplet has been removed to the atmosphere, The present invention relates to an invention for preventing environmental pollution.

In general, industrial heating equipment burns fossil fuels to obtain the required calories, and fossil fuels are burned and exhaust gases are discharged into the atmosphere.

The exhaust gas as described above contains not only dust but also chemical substances harmful to the human body, and is discharged at a high temperature.

Accordingly, in order to prevent various harmful effects caused by the exhaust gas, the temperature of the exhaust gas is lowered when the exhaust gas is discharged to the atmosphere, the dust and harmful substances contained in the exhaust gas are adhered to each other,

The cleaning of the exhaust gas is performed by using a cleaning tower. Various cleaning towers for cleaning the exhaust gas have been developed.

When the exhaust gas discharged from the industrial heating equipment flows into the washing tower, water is sprayed to the exhaust gas to lower the temperature of the exhaust gas to lower the concentration of the harmful substances contained in the exhaust gas. And the dust is adhered to the water.

As described above, water is injected into the exhaust gas to lower the temperature, and the exhaust gas, from which harmful substances and dust are primarily removed, is passed through a filter that is repeatedly formed in multiple layers to form fine dust and harmful substances remaining in the exhaust gas .

As described above, the cleaning tower in which exhaust gas is removed by a filter formed by folding multiple layers of mesh has the disadvantage that the holes of the mesh constituting the filter are adhered to water and are easily blocked by the solidified dust Publication No. 10-2004-0051406 (public date: June 18, 2004)).

When the holes of the filter are clogged as described above, the exhaust pressure in the cleaning tower becomes high, which causes a working load of the exhaust gas discharging fan to induce the discharge of the exhaust gas, and the stable operation of the cleaning tower can not be expected.

In addition, in the method in which water is sprayed to adhere dust and the exhaust gas having a lowered temperature is simply discharged through a filter, the exhaust gas discharged into the atmosphere contains a droplet.

The reason is that the temperature of the exhaust gas and the dust are removed by using water to generate a droplet, and the exhaust gas containing the droplet as described above is simply passed through the filter, and in a state where fine droplets remain in the exhaust gas And then discharged to the atmosphere.

As described above, the exhaust gas and the remaining fine droplets are condensed in the air, and the condensed droplets fall into the ground to contaminate the soil, as well as to prevent diseases such as dermatitis, And the like.

The object of the present invention is to solve the disadvantages of the conventional washing tower, and it is an object of the present invention to provide an exhaust gas purifying apparatus that injects exhaust gas cleansing water through a primary injection nozzle constituting an exhaust gas cleaning section, The water curtain formed by the exhaust gas cleaning water injected from the secondary injection nozzle located at the upper portion of the secondary injection nozzle passes through the exhaust gas and removes the temperature and the dust adhered to each other and at the same time the temperature is lowered in the exhaust gas cleaning section, A mixture of chemicals that adjusts the PH concentration to meet the emission standards by lowering the temperature by discharging the exhaust gas to which the dust has adhered is discharged into the conical pipe of the exhaust gas filtering unit and the exhaust gas is divided into small units The harmful substances and harmful gas contained in the flue gas discharged from the exhaust gas are completely removed to prevent air pollution caused by the exhaust gas. And the liquid droplets contained in the exhaust gas are passed through a centrifugal separator that generates a centrifugal force to completely separate and remove the liquid droplets. As a result, the soil pollution and the water pollution source caused by the droplets contained in the exhaust gas are fundamentally And to provide an exhaust gas purification cleaning tower suitable for an industrial heating system that has been solved.

In order to achieve the above object, the present invention provides a cleaning tower for cleaning exhaust gas generated from industrial heating,

A funnel shape is formed so as to collect exhaust gas cleansing water injected into the exhaust gas at a lower portion of the exhaust gas inflow port into which the exhaust gas flows and an exhaust gas cleaning water drain pipe A washing water discharge portion;

A primary injection nozzle for directly injecting water into the exhaust gas flowing through the exhaust gas inlet is provided on the same line as the exhaust gas inlet and water curtains are formed on the exhaust gas conveying path that is discharged along the inside of the cleaning tower And a secondary injection nozzle for allowing the temperature and the dust to be removed again while the exhaust gas is passing therethrough;

The temperature of the exhaust gas is lowered while passing through the exhaust gas cleaning section, and the exhaust gas, from which dust is adhered and removed, is dividedly discharged through a plurality of conical pipes, and at the same time, the temperature of the exhaust gas, which is divided by the conical pipe, An exhaust gas filtering unit in which a chemical mixing spray for spraying the chemical to lower the PH concentration is installed on the conical pipe;

And a centrifugal force generating blade for generating a centrifugal force so as to separate liquid droplets in the exhaust gas whose temperature is lowered by the exhaust gas filtering unit and which is adjusted in PH concentration are disposed in an exhaust gas partition And a droplet centrifuge connected to the exhaust pipe and having a droplet drain pipe formed at a lower portion thereof for separating the exhaust gas and discharging the droplet flowing along the inner wall of the exhaust gas discharge column.

The exhaust gas washing water discharging portion has a multi-stage vortex preventing vortex preventing the swirling phenomenon that obstructs the discharge speed of the washing water when the exhaust gas washing water is discharged on the inclined inner surface in the form of a funnel, A washing water drain pipe through which the exhaust gas washing water is drained is connected.

The exhaust gas cleaning unit includes a primary injection nozzle for spraying exhaust gas washing water to the exhaust gas flowing through the exhaust gas inlet to lower the temperature of the exhaust gas and to inject the exhaust gas washing water for adhering dust to the exhaust gas And the second injection nozzle is formed at an equal interval along the inner surface of the cleaning tower at the upper side of the first injection nozzle so as to be opposed to each other in the lateral direction of the traveling direction in which the exhaust gas flows, A second injection nozzle for forming a water curtain inside the cleaning tower and lowering the temperature of the exhaust gas again when the exhaust gas passes through the water curtain and for reattaching the dust again, The secondary spray nozzle is multi-stage, and the water curtain is formed in multiple stages.

Wherein the exhaust gas filtering unit has a funnel-shaped droplet-type drain hopper formed in the cleaning tower, the droplet-type drain hopper having a droplet drain pipe installed at a lower center so as to collect droplets separated from the exhaust gas, A plurality of tubes are uniformly distributed in the front, rear, left and right intervals, and a spray for spraying chemicals for lowering the temperature of the exhaust gas and the PH concentration is installed on the upper and lower portions of the conical tube, The spray is characterized in that the number of nozzles corresponding to each conical tube is formed.

Wherein the droplet centrifuge is connected to an exhaust gas discharge column including a centrifugal force generating blade for generating a centrifugal force in the exhaust gas in an exhaust gas split discharge pipe formed in each of four directions of an exhaust gas discharge pipe to separate droplets in the exhaust gas, When the inner diameter of the gas discharge column is larger than the outer diameter of the exhaust gas split discharge pipe, a gap is formed between the exhaust gas discharge column and the exhaust gas split discharge pipe, and the upper end of the exhaust gas split discharge pipe is connected to the lower And the droplet is discharged through a droplet drain pipe formed as a lower side surface of the exhaust gas discharge column.

And the centrifugal force generating blade is fixed.

And the centrifugal force generating blade is configured to rotate by a feed force of the exhaust gas when the exhaust gas flows in and out.

In the exhaust gas purification cleaning tower suitable for the industrial heating equipment of the present invention described above,

First, the exhaust gas flowing into the cleaning tower 100 is injected with the exhaust gas cleansing water through the primary injection nozzle 122 constituting the exhaust gas cleaning part 120, and at the same time, the upper part of the primary injection nozzle 122 The temperature of the water curtain formed by the exhaust gas cleaning water injected from the secondary injection nozzle 123 positioned at the exhaust nozzle 123 is reduced by the exhaust gas passing through the water curtain and the temperature is lowered at the exhaust gas cleaner 120 The exhaust gas to which the dust is adhered is exhausted to the conical pipe 131 of the exhaust gas filtering unit 130 so that the exhaust gas is divided into smaller units and the exhaust gas is discharged and the temperature is lowered and the PH concentration is lowered It is possible to completely remove the harmful substances and harmful gas contained in the discharged exhaust gas and to prevent the pollution of the atmosphere by the exhaust gas exhausted. In the process of cleaning the exhaust gas, The droplets are passed through a droplet centrifuge 140 that generates a centrifugal force to completely separate and remove the droplets, thereby fundamentally eliminating soil pollution and water pollution caused by droplets contained in the exhaust gas.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall view of an exhaust gas purification cleaning tower suitable for an industrial heating system according to the present invention; Fig.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an exhaust gas purifying cleaning tower for an industrial heating system,
Figure 3 is a plan view of the top view of Figure 2;
Fig. 4 is an example of an exhaust gas filtering section of an exhaust gas purification cleaning tower suitable for an industrial heating system according to the present invention; Fig.
5 is a view showing an example of a droplet centrifuge of an exhaust gas purification cleaning tower suitable for industrial heating equipment according to the present invention.
Fig. 6 is a plan view of Fig. 5; Fig.
7 is a view showing another embodiment of a centrifugal force generation blade for a droplet centrifuge of an exhaust gas purification cleaning tower suitable for industrial heating equipment according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The exhaust gas purifying cleaning tower 100 suitable for the industrial heating system of the present invention includes an exhaust gas cleansing water discharging portion 110 positioned at a lower portion and an exhaust gas purifying water discharging portion 110 located at an upper portion of the exhaust gas cleansing water discharging portion 110, An exhaust gas cleaning unit 120 for lowering the temperature of the exhaust gas and adhering dust to the exhaust gas cleaning unit 120 and an exhaust gas filtering unit 130 for lowering the temperature and spraying the chemicals on the exhaust gas cleaned by the exhaust gas cleaning unit 120, A droplet centrifuge 140 for separating and removing droplets from the stabilized exhaust gas by removing harmful substances from the exhaust gas filtering unit 130 and a droplet separator 140 for separating droplets And an exhaust gas exhaust pipe 150 through which exhaust gas is exhausted.

The exhaust gas cleansing water discharging portion 110 is positioned below the exhaust gas inlet 121 into which the exhaust gas flows and forms a funnel so that the exhaust gas washing water injected into the exhaust gas can be collected and discharged .

A multi-stage vortex 111 for preventing vortex is formed on an inclined inner surface of the exhaust gas washing water discharging portion 110 to prevent a swirling phenomenon that hinders discharge speed of the washing water when the exhaust gas washing water is discharged And a cleansing water drain pipe 112 through which the exhaust gas cleansing water is drained is connected to the lower center.

The exhaust gas cleaning part 120 is provided with a primary injection nozzle 122 for directly injecting water into the exhaust gas flowing through the exhaust gas inlet 121 on the same line as the exhaust gas inlet 121, And a secondary injection nozzle 123 for forming a water curtain on the discharge gas transfer path to be discharged along the inside of the cleaning tower 100 so that the temperature and the dust are removed again while the exhaust gas passes.

The primary injection nozzle 122 functions to lower the temperature of the exhaust gas and coalesce the dust by firstly injecting the exhaust gas cleaning water into the exhaust gas flowing through the exhaust gas inlet 121.

The primary injection nozzles 122 are disposed so as to face each other in the lateral direction of the traveling direction in which the exhaust gas flows.

The secondary injection nozzle 123 installed on the upper side of the primary injection nozzle 122 is formed at equal intervals along the inner surface of the washing tower 100 and is injected into the washing tower 100 Water curtains are formed so that the discharged exhaust gas lowers the temperature of the exhaust gas again when the exhaust gas passes through the water curtain, and re-adheres the dust again.

The secondary injection nozzles 123 are provided in multiple layers.

The exhaust gas filtering unit 130 includes a plurality of conical pipes 131 that divide the exhaust gas having a temperature lowered while passing through the exhaust gas cleaner 120 and the dust adhered and removed in small units The conical pipe 131 is installed inside the cleaning tower 100 and has a funnel-shaped droplet drain hopper 133 having a droplet drain pipe 133 installed at the lower center so as to collect and discharge the droplets separated from the exhaust gas. (132).

The conical tubes 131 are arranged on the droplet drain hopper 132 at equal intervals in the back and forth, right and left directions, and a plurality of the conical tubes 131 are uniformly distributed.

A chemical spray 135 for spraying the chemicals to lower the temperature and the PH concentration of the exhaust gas, which is divided by the conical tube 131 and discharged in a small unit, is positioned on the conical tube 131 It is installed.

The number of nozzles 136 corresponding to each of the conical tubes 131 is formed in the spray 135 for mixing chemicals.

The droplet centrifuge 140 includes a centrifugal force generating blade 142 that generates a centrifugal force to separate droplets in the exhaust gas whose temperature is lowered by the exhaust gas filtering unit 130 and whose PH concentration is lowered, And a gas discharge column 141 is connected to an exhaust gas split discharge pipe 151 formed in each of the four sides of the exhaust gas discharge pipe 150.

When the exhaust gas discharge pillar 141 is assembled such that its inner diameter is larger than the outer diameter of the exhaust gas split discharge pipe 151, it is assembled and formed with a gap between the exhaust gas discharge pillar 141 and the exhaust gas split discharge pipe 151 An upper end of the exhaust gas split discharge pipe 151 is assembled in a state protruding from the lower end of the exhaust gas discharge pillar 141 and discharged through the droplet discharge pipe 143 formed on the lower side of the exhaust gas discharge pillar 141 So that the enemy is discharged.

The centrifugal force generating blades 142 may be fixed or fixed to rotate by the force of the exhaust gas when the exhaust gas is introduced and discharged through the hinge shaft of the cross tool 144.

In the cleaning tower 100 for cleaning an exhaust gas of the industrial heating system of the present invention having the above-described structure, exhaust gas generated from the industrial heating equipment is injected into the exhaust gas inlet 121 constituting the exhaust gas cleaning part 120.

The exhaust gas washing water is injected into the exhaust gas flowing through the exhaust gas inlet 121 from the primary injection nozzle 122 provided so as to be positioned on the side of the flow direction of the exhaust gas to adhere the dust contained in the exhaust gas At the same time, the temperature is firstly dropped.

The exhaust gas, which is adhered by the exhaust gas cleansing water injected from the primary disperse furnace 122 and has a decreased temperature, is transported to an upper part, and is sprayed from the secondary injection nozzle 123 to discharge the water curtain as an exhaust gas cleansing water .

The water curtain produced by the exhaust gas cleaning water has a multi-layered secondary injection nozzle 123 constituting a multi-layered layer, and functions as a net.

Accordingly, when the exhaust gas passes through the water curtain formed by the exhaust gas cleaning water jetted from the secondary injection nozzle 123, dust is adhered again and removed, and the temperature of the exhaust gas is further lowered.

As described above, the exhaust gas cleaning water adhering the exhaust gas temperature and the dust is dropped to the exhaust gas washing water discharge unit 110 and discharged to the collection tank through the washing water drain pipe 112.

The exhaust gas cleansing water dropped into the exhaust gas cleansing water discharging portion 110 has a vortex prevention multi-stage vortex 111 formed on an inner surface inclined in the form of a funnel so that it can be quickly discharged without vortexing.

As described above, in the exhaust gas whose dust is adhered and removed by the exhaust gas cleaning part 120 and the temperature is lowered, the PH concentration is adjusted in the exhaust gas filtering part 130 and the temperature remarkably drops. To compensate for the reason for the temperature drop)

That is, the dust is adhered to and removed from the exhaust gas cleaning part 120, and the exhaust gas whose temperature is lowered is divided and transferred to uniformly mix the chemicals in the exhaust gas.

The division of the exhaust gas is carried out by a plurality of conical tubes 131 installed through the droplet drain hopper 132.

The chemicals injected through the nozzles 136 of the chemical mixing spray 135 installed in the upper and lower portions of the conical tube 131 are sprayed and mixed with the exhaust gas, which is divided and conveyed by the conical tube 131, It will be done.

As the exhaust gas is divided and transferred as described above, the mixing of the chemicals is uniformly performed. By mixing the chemicals uniformly, the exhaust gas temperature is effectively lowered to a remarkably low temperature, and the PH concentration can be effectively lowered Therefore, it is possible to completely remove harmful substances and noxious gas contained in the exhaust gas discharged, and to prevent pollution of the atmosphere by exhaust gas exhausted.

In this case, caustic soda capable of neutralizing and removing harmful substances in the exhaust gas is used.

In the exhaust gas treated in the exhaust gas filtering unit 130, the exhaust gas cleaning water used for cleaning in the exhaust gas cleaning unit 120 remains, and the residue is referred to as droplet.

If the liquid contained in the exhaust gas is scattered to the atmosphere together with the exhaust gas, it causes various inconveniences that pollute the soil or contaminate the water quality.

Therefore, the removal of the droplets in the exhaust gas is one of the essential requirements for the purification treatment of the exhaust gas generated in the industrial heating equipment.

The dropping of the droplets in the exhaust gas is carried out in such a manner that the exhaust gas is discharged from the exhaust gas discharge poles (not shown) of the droplet centrifuge 140 connected to the plurality of exhaust gas split discharge pipes 151 formed equidistantly along the outer circumferential surface of the exhaust gas discharge pipe 150 141).

A centrifugal force is generated in the exhaust gas by the centrifugal force generation blade 142 provided on the passage of the exhaust gas discharge column 141 through which the exhaust gas passes, and the centrifugal force is contained in the exhaust gas Separate the liquid droplets that have been formed.

The liquid droplets separated from the exhaust gas flow along the inner wall of the exhaust gas discharge column 141.

The droplet that has flowed along the inner wall of the exhaust gas discharge column 141 is collected at the lower end of the exhaust gas discharge column 141 and drained through the droplet drain pipe 143. The exhaust gas from which the droplet is separated and removed is discharged from the exhaust gas discharge pipe 150 to the atmosphere.

The droplet can be discharged only to the droplet drain pipe 143 without being introduced into the exhaust gas split discharge pipe 151 because the upper end of the exhaust gas split discharge pipe 151 protrudes from the bottom bottom of the exhaust gas discharge pillar 141 This is because a space in which the inner diameter of the exhaust gas discharging column 141 is collected in comparison with the outer diameter of the exhaust gas split discharge pipe 151 is formed.

On the other hand, at the lower end of the exhaust gas exhaust pipe 150, there is provided an excellent drain pipe 152 capable of draining rainwater or the like, which is to be inflowed with water generated during rain or due to humidity.

100: cleaning tower 110: exhaust gas washing water discharging portion
111: Vortex prevention multi-stage phantom 112: Cleaning water drain pipe
120: Exhaust gas cleaner 121: Exhaust gas inlet
122: primary injection nozzle 123: secondary injection nozzle
130: exhaust gas filtering unit 131: conical pipe
132: Droplet drain hopper 133: Droplet drain tube
135: Spray for chemical mixing 136: Nozzle
140: droplet centrifuge 141: exhaust gas outlet column
142: centrifugal force generation blade 143: droplet drain tube
150: exhaust gas exhaust pipe 151: exhaust gas split exhaust pipe
152: Excellent drain pipe

Claims (7)

A cleaning tower (100) for cleaning an exhaust gas generated from an industrial heating system,
A funnel shape is formed so as to collect exhaust gas cleansing water injected into the exhaust gas at a lower portion of the exhaust gas inlet 121 into which the exhaust gas flows and an exhaust gas cleansing water drain pipe 112 is provided at the lower center, An exhaust gas cleansing water discharging unit 110 installed therein;
A primary injection nozzle 122 for directly injecting water into the exhaust gas flowing through the exhaust gas inlet 121 is provided on the same line as the exhaust gas inlet 121 and is discharged along the inside of the cleaning tower 100 And a secondary injection nozzle 123 for forming a water curtain on the conveyed exhaust gas conveying path so that the dust is removed again while the exhaust gas passes through the exhaust gas cleaning part 120;
The exhaust gas having the temperature lowered and the dusts being adhered and removed through the exhaust gas cleaning unit 120 is divided and discharged through the plurality of conical pipes 131 and is divided by the conical pipe 131 into small units An exhaust gas filtering unit 130 installed at a lower portion of the conical pipe 131 for spraying a chemical to spray the chemical to lower the temperature and the PH concentration of the exhaust gas discharged into the conical pipe 131;
An exhaust gas discharge column 141 including a centrifugal force generation blade 142 that generates a centrifugal force so as to separate liquid droplets in the exhaust gas whose temperature is lowered by the exhaust gas filtering unit 130 and whose PH concentration is lowered, A droplet drain pipe 143 connected to the exhaust gas split discharge pipe 151 formed in each of the four sides of the exhaust pipe 150 and separated from the exhaust gas to drain the droplets flowing along the inner wall of the exhaust gas discharge pillar 141 And a droplet centrifugal separator (140) formed at the lower part of the exhaust purification purification tower.
2. The exhaust gas purifying apparatus according to claim 1, wherein the exhaust gas cleansing water discharging part (110) is a funnel-shaped vortex flow preventing vortex phenomenon that obstructs the discharge speed of the washing water when the exhaust gas washing water is discharged to the inclined inner surface And a washing water drain pipe (112) through which the exhaust gas washing water is drained is connected to the bottom center of the exhaust gas purification washing tower.
The exhaust gas cleaning apparatus according to claim 1, wherein the exhaust gas cleaning unit (120) is configured to exhaust the exhaust gas cleaning water to the exhaust gas flowing through the exhaust gas inlet to lower the temperature of the exhaust gas, And a secondary injection nozzle 123 is provided on the upper side of the primary injection nozzle 122. The secondary injection nozzle 123 is provided on the upper side of the primary injection nozzle 122. The primary injection nozzle 122, A water curtain is formed inside the cleaning tower 100 by the exhaust gas cleansing water formed at equal intervals along the inner surface of the cleaning tower 100. When the exhaust gas passes through the water curtain, A second injection nozzle 123 for lowering the temperature of the gas and re-adhering the dust again is formed. The second injection nozzle 123 is multi-tiered and the water curtain is formed in multiple stages The exhaust gas purification spray tower for industrial heating equipment.
The apparatus of claim 1, wherein the funnel-shaped droplet drain hopper (132) having a droplet drain pipe (133) at a lower center thereof for collecting droplets separated from the exhaust gas, A plurality of conical tubes 131 passing through the liquid droplet drain hopper 132 are formed in the interior of the tower 100 and are evenly distributed at equal intervals in the front and rear direction, A chemical mixing spray 135 for spraying a chemical agent for lowering the temperature of the exhaust gas and the PH concentration is installed. The chemical mixing spray 135 is installed in the nozzle 136 corresponding to each of the conical tubes 131 Wherein the exhaust gas purifying cleaning tower is suitable for industrial heating equipment.
The centrifugal force generating blade according to claim 1, wherein the droplet centrifuge (140) comprises: a centrifugal force generating blade for generating a centrifugal force in the exhaust gas in the exhaust gas split discharge pipe (151) formed in each of four directions of the exhaust gas exhaust pipe The exhaust gas discharge pipe 141 is connected to the exhaust gas discharge pipe 141. When the exhaust gas discharge pipe 141 is assembled such that its inner diameter is larger than the outer diameter of the exhaust gas split discharge pipe 151, And the upper end of the exhaust gas split discharge pipe 151 is protruded from the lower end of the exhaust gas discharge pillar 141 to be assembled and formed so as to have a gap between the exhaust gas discharge pipe 151 and the exhaust gas split discharge pipe 151, And the droplet is discharged through a droplet drain pipe (143) formed as a lower side surface of the discharge column (141).
The exhaust gas purification cleaning tower according to claim 1 or 5, wherein the centrifugal force generating blades (142) are fixed type.
The centrifugal force generating blade (142) according to any one of claims 1 to 7, wherein the centrifugal force generating vane (142) is provided to the cross tool (144) via a hinge shaft and is configured to rotate by the feed force of the exhaust gas when the exhaust gas Which is suitable for industrial heating equipment.

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