KR20190084668A - Flow guide equipment of flue gas for heat exchange boiler - Google Patents

Abstract

The present invention relates to an exhaust gas flow guide apparatus for heat exchange in a boiler and, more specifically, to an exhaust gas flow guide apparatus for heat exchange in a boiler, wherein a perforated plate having a hole perforated therein is installed in a superheater region in which a plurality of water pipes are installed and prevents drift caused by centrifugal force or inertia while passing exhaust gas through a curved section to increase heat exchange efficiency of a waste heat water pipe boiler using thermal energy of a combustion furnace. According to the present invention, the exhaust gas flow guide apparatus for heat exchange in a boiler comprises: an energy recovery unit (100) receiving exhaust gas (30) generated from the combustion furnace (10), in which solid fuel is combusted, to generate steam (50) by heat of the exhaust gas (30); and a drift prevention unit (200) disposed in the energy recovery unit (100) to prevent wind drift of the exhaust gas (30) biased to one side caused by centrifugal force or inertia when the exhaust gas (30) flows in the energy recovery unit (100), and circulating the exhaust gas (30) to be uniformly diffused.

Description

TECHNICAL FIELD [0001] The present invention relates to a flue gas flow inducing device for a boiler heat exchange,

The present invention relates to a flue gas flow induction apparatus for boiler heat exchange, and more particularly, to a flue gas flow induction apparatus for boiler heat exchange, in which, in order to improve the heat exchange efficiency of a waste heat water boiler in which thermal energy of a furnace is used, The present invention relates to a flue gas flow induction device for a boiler heat exchange, which is provided with a perforated plate so that flue gas can be prevented from drifting due to centrifugal force or inertia while passing over a curve section.

In general, municipal waste or industrial waste is mostly disposed of by incineration in landfill or incinerator.

In the incinerator, the fuel is injected into the combustion chamber, and the fuel is combusted after having the combustion condition (Temperature, Turbulence, Time). In the combustion chamber, the spent waste or fuel is flame burned or pyrolyzed Or re-burns unburned gaseous material according to the fuel condition.

The incinerator uses solid waste fuel, which is not only sawdust or wood crumbs but also pelletized waste plastics generated at workplaces or homes, as a fuel. By burning such solid waste fuel to generate heat, boilers and cogeneration And the like have been developed.

Boilers that use solid waste fuel as a fuel are widely used because they do not use diesel / BC oil, which is a greenhouse gas emission source, because they have a low fuel cost and are environmentally friendly. But it is spreading to places such as municipal power generation facilities and cogeneration.

In the case of landfill of municipal waste or industrial waste, there is a large-scale site for disposal of a large amount of waste at a time, landfill cost, and soil environmental problems caused by leachate before stabilization. In the case of incineration, It is possible to dispose municipal wastes within the facility, but it is also necessary to rely on landfill disposal of incineration residues as well as excessive facility costs and the problem of the atmospheric environment due to incineration.

Therefore, in order to solve such problems, it is necessary to reduce the amount of landfill or reduce the amount of incineration. Such household waste is mostly classified at home, so that if household waste and industrial waste reduction efforts are not properly classified, Is difficult to achieve.

Finally, it is necessary to treat municipal waste or industrial waste before landfilling or incineration in landfill or incinerator. However, it is difficult to mechanically treat it and it is classified only by hand and only the landfill or incineration is required. .

Among the fuels, SRF has higher calorific value and lower price than anthracite, making it an alternative fuel for industrial and public institutions and heating fuel. As a result, in recent years, the local governments have been increasingly trying to use the SRF-based heating fuel.

2. Description of the Related Art In recent years, the production and use of steam boilers which utilize heat generated as a result of combustion in a combustion furnace to produce steam and utilize it as an energy source have been actively conducted.

However, there is a problem in that a part of the inside of the boiler chamber is frequently damaged due to wear in the process of the heat of the exhaust gas generated in the combustion furnace being flowed into the chamber of the boiler provided with the water pipe.

In addition, if the inside of the boiler chamber is partially worn or damaged, the entire boiler needs to be disassembled and repaired or replaced, resulting in a significant economic burden and loss.

In addition, since much of the thermal energy of the exhaust gas of the combustion furnace can not be utilized and is discharged, there is a problem in that the efficiency of utilization of heat energy is not smoothly performed and the efficiency of steam generation is lowered.

Patent Document Registration Patent No. 10-1786304

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above problems, and it is an object of the present invention to provide a flue gas flow induction apparatus for boiler heat exchange, wherein heat of exhaust gas generated in a combustion furnace flows into a chamber of a boiler, The present invention provides a flue gas flow induction device for boiler heat exchange that minimizes wear and tear of the inside of a boiler chamber.

A flue gas flow induction apparatus for boiler heat exchange according to the present invention is a flue gas flow induction apparatus for boiler heat exchange that can easily repair or replace a worn portion when the inside of the boiler chamber is partially worn or damaged The purpose is to provide.

The present invention provides a flue gas flow induction apparatus for boiler heat exchange, which maximizes heat energy of a flue gas of a combustion furnace and maximizes steam generation efficiency to recycle energy. .

The exhaust gas flow induction apparatus for boiler heat exchange according to the present invention is characterized in that an exhaust gas 30 generated in a combustion furnace 10 as a space in which solid fuel is burnt flows into the steam 50 through the heat of the exhaust gas 30 An energy recovery unit 100 for generating energy; And the flue gas 30, which is provided in the energy recovery unit 100 and flows in the energy recovery unit 100, is prevented from being drifted by the centrifugal force in one direction, And a drift preventing part 200 that allows the exhaust gas 30 to flow while being diffused evenly.

The energy recovery unit 100 includes a gas chamber 110 connected to the combustion furnace 10 and configured to remove nitrogen oxides in the exhaust gas 30 introduced into the combustion furnace 10, And a flow chamber 120 connected to the gas chamber 110 and removing dust falling from the exhaust gas 30 which is heavier than the set weight of the exhaust gas flowing into the gas chamber 110. The flow chamber 120 is connected to the flow chamber 120, First and second superheaters 130 and 140 capable of generating steam 50 through the heat of the incoming flue gas 30 and changing the saturated steam to superheated steam, 120 and the first and second superheaters 130 and 140 so that the dust contained in the exhaust gas 30 can be dropped and discharged to the outside.

The flow preventing unit 200 may prevent flow of the exhaust gas 30 from the flow chamber 120 to the first superheater 130 due to the connection structure between the flow chamber 120 and the first superheater 130 The flow direction of the exhaust gas 30 is changed to be orthogonal to prevent the exhaust gas 30 from drifting so that the flow direction of the exhaust gas 30 A first screen tube 210 for introducing the first screen tube 210 and a second screen tube 210 for introducing the first screen tube 210 to the first screen heater 210, A lifting guide plate 220 disposed at the bottom of the first superheater 130 at an adjacent position of the discharge hopper 101 to guide the exhaust gas 30 up and down to prevent the exhaust gas from entering the hopper 101, The exhaust gas 30 that has passed through the induction plate 220 is deflected by the first superheater 130 A plurality of holes 235 are formed in the first superheater 130 in the width direction and the exhaust gas 30 flows into the first superheater 130 through the holes 235 A uniform flow plate 230 for uniformly diffusing and flowing the exhaust gas 230 from the first superheater 130 to the second superheater 140 through the uniform flow plate 230, The flow direction of the exhaust gas 30 is changed to be perpendicular to the first superheater 130 and the second superheater 140 due to the connection structure between the first superheater 130 and the second superheater 140, And a second screen tube 240 disposed between the first superheater 130 and the second superheater 140 to guide the flow direction of the exhaust gas 30.

The first screen tube 210 includes a first tube column 212 vertically disposed at a connecting portion between the flow chamber 120 and the first superheater 130, A pair of plate-shaped first wings (210) which are detachably connected to the first tube columns (212) while enclosing the tube columns (212) and which can change the flow direction of the exhaust gas (30) And a first tightening bolt 216 passing through the pair of first wing plates 214 and capable of tightly tightening the first wing plate 214 to the first tube pillar 212 .

The lifting guide plate 220 is disposed on the bottom surface of the first superheater 130 between the first screen tube 210 and the discharge hopper 101 formed below the first superheater 130, An exhaust gas hopper 101 is disposed in the first screen tube 210 so that an exhaust gas 30 flowing in a direction in which the exhaust hopper 101 is formed in the first screen tube 210 is inclined upward in an upward direction And may include an inclined surface 222.

The second screen tube 240 includes a second tube column 242 vertically disposed at a connection portion between the first super heater 130 and the second super heater 140, A pair of plate-shaped second tubes 242 which are detachably connected to the second tube columns 242 while enclosing the two tube columns 242 and have an inclination angle to both sides and capable of changing the flow direction of the exhaust gas 30 A second fastening bolt 246 that penetrates the pair of second wing plates 244 and can be tightly fixed to the second tube post 242 by the second wing plate 244, . ≪ / RTI >

The energy recovery unit 100 includes an upper drum 150 formed on the first and second superheaters 130 and 140 and filled with water 70, A lower drum 160 formed at a lower portion of the lower drum 150 and filled with water 70 and a lower drum 160 connected to the upper drum 150 and the lower drum 160, The first superheater 130 and the second superheater 140 may receive the heat of the exhaust gas 30 passing through the first superheater 130 and the second superheater 140 while the steam 50 entering the first superheater 130 2 superheater 140. In this case,

The water pipe 170 is exposed to the exhaust gas passing through the first superheater 130 and the second superheater 140 to receive the heat of the exhaust gas 30, The water 70 is heated and becomes the steam 50. The steam 50 passes through the water pipe 170 so that the saturated steam can be dried by the superheated steam and supplied to the outside of the upper drum 150 And may further include a steam pipe 152.

The energy recovery unit 100 includes a water supply unit 180 connected to the upper drum 150 and the lower drum 160 to supply the water 70 to the upper drum 150 and the lower drum 160, An exhaust gas 30 connected to the second superheater 140 and indirectly connected to the water supplier 180 and passing through the second superheater 140 provides residual heat to the water supplier 180, And a water conservator 190 for maintaining the temperature of the water 70 supplied from the feeder 180 to the upper drum 150 and the lower drum 160 at 80 to 140 ° C.

The gas chamber 110 includes a plurality of injection nozzles 112 for injecting urea water into the flue gas 30 so that nitrogen oxides in the flue gas 30 introduced from the combustion furnace 10 can be removed, Dusts disposed above and below the chamber 110 in a staggered manner in the form of a plate are disposed in the exhaust gas passing through the gas chamber 110. The dust is supplied to the first and second super heaters 130 And 140 may be blocked by a plurality of shutoff plates 114. [

The energy recovery unit 100 may be configured such that the flow chamber 120 and the first superheater 130 are disposed in parallel with each other and between the flow chamber 120 and the first superheater 130, The first superheater 130 and the second superheater 140 are disposed in parallel with each other and the first superheater 130 and the second superheater 140 are disposed in parallel with each other, And a second flow path 142 formed between the super heaters 140 and forming a path of the exhaust gas 30. [

The water pipe 170 includes a header water pipe 172 through which the steam generated at the upper portion of the upper drum 150 flows and a steam pipe 50 through which the water flows into the header water pipe 172, The saturated steam is passed through the first superheater 130 and the second superheater 140 while being exposed to the exhaust gas 30 to receive the heat of the exhaust gas 30, And a main main pipe 174 connected to the steam pipe 152 so as to be supplied to the outside through the pipe 152.

The exhaust gas flow induction device for boiler heat exchange according to the present invention minimizes wear and tear of the inside of the boiler chamber during the flow of the exhaust gas generated from the combustion furnace into the chamber of the boiler having the water pipe, There is an economic effect that can be extended.

The exhaust gas flow induction apparatus for boiler heat exchange according to the present invention is capable of easily separating and repairing or replacing a worn portion when the inside of the boiler chamber is partially worn or damaged, .

The exhaust gas flow induction apparatus for boiler heat exchange according to the present invention maximizes the use of thermal energy of a flue gas of a combustion furnace to maximize steam generation efficiency, thereby enabling energy to be recycled, thereby optimizing production efficiency, .

1 is a view showing an exhaust gas flow inducing apparatus for boiler heat exchange according to the present invention.
2 is a cross-sectional view of a flue gas flow induction device for boiler heat exchange according to the present invention.
FIG. 3 is a plan view of a flue gas flow induction apparatus for boiler heat exchange according to the present invention.
4 is a view showing an exhaust gas flow of an exhaust gas flow induction apparatus for boiler heat exchange according to the present invention.
5 is a view showing an embodiment according to Fig.
6 is a view showing a main part of a flue gas flow induction device for boiler heat exchange according to the present invention.
7 is a view showing an embodiment of a flue gas flow induction apparatus for boiler heat exchange according to the present invention.
8 is a view showing an embodiment according to Fig.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views, and length and area, thickness, and the like may be exaggerated for convenience.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

In the following detailed description, for example, in order to improve the heat exchange efficiency of a waste heat water boiler in which thermal energy of a combustion furnace is used, a perforated plate is formed in a superheat base region where a plurality of water pipes are installed, It is needless to say that the technical constitution of the flue gas flow induction device for boiler heat exchange (in particular, the drift preventing part) that can prevent the drift due to the centrifugal force can be equally applied.

1 is a view showing an exhaust gas flow inducing apparatus for boiler heat exchange according to the present invention.

2 is a cross-sectional view of a flue gas flow induction device for boiler heat exchange according to the present invention.

FIG. 3 is a plan view of a flue gas flow induction apparatus for boiler heat exchange according to the present invention.

1 to 3, an exhaust gas flow induction apparatus for boiler heat exchange according to the present invention is characterized in that an exhaust gas 30 generated in a combustion furnace 10, which is a space in which solid fuel is burnt, An energy recovery unit 100 for generating steam 50 through heat and an exhaust gas 30 provided in the energy recovery unit 100 and flowing inside the energy recovery unit 100, And a drift preventing part 200 for preventing drift of the exhaust gas 30 which is biased to one side by centrifugal force or inertia and allowing the exhaust gas 30 to flow while being evenly diffused.

The energy recovery unit 100 generates the steam 50 by using the heat of the exhaust gas 30 generated in the combustion furnace 10 and reuses the steam as an energy source.

The energy recovery unit 100 includes a gas chamber 110 connected to the combustion furnace 10 and capable of removing nitrogen oxides in the exhaust gas 30 introduced into the combustion furnace 10, And a flow chamber 120 connected to the gas chamber 110 and removing heavy dust that is heavier than the set weight of the exhaust gas 30 introduced from the gas chamber 110.

The energy recovery unit 100 is connected to the flow chamber 120 to generate the steam 50 through the heat of the exhaust gas 30 introduced from the flow chamber 120 and convert the saturated steam into superheated steam The first and second super heaters 130 and 140 disposed below the gas chamber 110 and the flow chamber 120 and the first and second superheaters 130 and 140, And a discharge hopper 101 for discharging dust to the outside.

The energy recovery unit 100 includes an upper drum 150 formed on the first and second superheaters 130 and 140 and filled with water 70, And a lower drum 160 formed at a lower portion of the heaters 130 and 140 and filled with water 70 therein.

The energy recovery unit 100 is connected to the upper drum 150 and the lower drum 160 while the steam 50 generated in the upper drum 150 is introduced into the upper drum 150, A plurality of water tubes 170 arranged in the first super heater 130 and the second super heater 140 so as to receive the heat of the exhaust gas 30 passing through the superheater 130 and the second superheater 140, ).

The upper drum 150 is installed in the upper drum 150 because the water pipe 170 is exposed to the exhaust gas 30 passing through the first superheater 130 and the second superheater 140 to receive the heat of the exhaust gas 30 The water 70 filled in the upper drum 150 is heated to become the steam 50. The steam 50 passes through the water pipe 170 and the saturated steam is dried by the superheated steam, And a steam pipe 152 for supplying steam to the outside of the steam pipe 152.

In addition, the water pipe 170 includes a header water pipe 172 into which the steam 50 generated in the upper part of the upper drum 150 flows, and a steam 50 flowing into the header water pipe 172, The steam is passed through the first superheater 130 and the second superheater 140 in the first and second superheaters 140 and 170 to be exposed to the exhaust gas 30 to receive the heat of the exhaust gas 30, And a main main pipe 174 connected to the steam pipe 152 so as to be supplied to the outside through the steam pipe 152.

Particularly, the energy recovery unit 100 is configured such that the flow chamber 120 and the first superheater 130 are disposed in parallel with each other, and the flow chamber 120 is formed between the flow chamber 120 and the first superheater 130 The first superheater 130 and the second superheater 140 are disposed in parallel with each other and the first superheater 130 and the second superheater 140 are disposed in parallel with each other. And a second flow path (142) formed between the second superheater (140) and forming a passage of the exhaust gas (30).

The gas chamber 110 serves to inject and remove urea water from the nitrogen oxide (NOx) in the exhaust gas 30 flowing into the gas chamber 110 from the combustion furnace 10.

In addition, the gas chamber 110 first classifies dust having a weight higher than a predetermined weight and dust having a lower weight than that of dust in the exhaust gas 30 flowing into the gas chamber 110, (110) and discharged to the outside of the gas chamber (110).

Here, the gas chamber 110 and the flow chamber 120 are preferably connected to each other in series.

The flow chamber 120 includes a discharge hopper (not shown) disposed at a lower portion of the flow chamber 120 and having relatively heavy dust among the exhaust gas 30 connected to the gas chamber 110 and entering the gas chamber 110 101) so as to remove the heavy dust secondarily.

That is, the gas chamber 110 removes nitrogen oxide (NOx) while primarily removing heavy dust from the dust of the exhaust gas 30, and the exhaust gas 30 from which dust has been removed firstly flows into the flow chamber 120 And the flow chamber 120 removes heavy dust from the exhaust gas 30 entering the flow chamber 120 by a second order.

The exhaust gas 30 sequentially flowing through the gas chamber 110 and the flow chamber 120 flows into the first and second superheaters 130 and 140.

That is, the exhaust gas 30 of the flow chamber 120 flows into the first superheater 130 through the first flow path 132, and the exhaust gas 30 of the first superheater 130 flows into the first superheater 130, Is introduced into the second super heater (140) through the second flow path (142).

The first and second superheaters 130 and 140 may be formed in the first and second superheaters 130 and 140 so that the exhaust gas 30 may contact the outer surface of the water pipe 170, The heat of the flue gas 30 is transferred to the water pipe 170 and the heat transferred to the water pipe 170 is heated by the water 70 filled in the upper drum 150, And to be able to do so.

The water pipe 170 allows the steam 50 generated in the upper portion of the upper drum 150 to flow through the header water pipe 172 and the steam 50 flows into the header water pipe 172, Is introduced into the water pipe 170 through the header water pipe 172 in a saturated steam state at 130 to 300 ° C.

The water pipe 170 is connected to the upper drum 150 and the lower drum 160 while the steam 50 in the state of saturation vapor flowing into the water pipe 172 flows through the header pipe 172, The steam 50 in the water pipe 170 is dried in the superheated steam state of 380 to 450 ° C while passing through the superheaters 130 and 140 and the steam 50, To the main main pipe 174 which is connected to the steam pipe 152 at the drum 150.

The steam 50 in the superheated steam state supplied to the steam pipe 152 through the main main pipe 174 of the water pipe 170 can be supplied to the outside and utilized as an energy source.

The upper drum 150 is disposed in the upper portion of the first super heater 130 and the second super heater 140 and disposed in the first super heater 130 and the second super heater 140 The water 70 is boiled in the upper drum 150 through the heat of the flue gas 30 by the water pipe 170 being connected to the upper part of the plurality of water pipes 170, 50) can be generated.

The lower drum 160 is disposed under the first superheater 130 and the second superheater 140 and is disposed inside the first superheater 130 and the second superheater 140 A plurality of water tubes 170 are connected to the lower portion of the drum 170 to provide a space for communicating the heat to the water 70 of the lower drum 160 by the water tube 170 together with the upper drum 150.

Particularly, the upper drum 150 is exposed to the exhaust gas 30 passing through the first superheater 130 and the second superheater 140 to receive the heat of the exhaust gas 30 The water 70 filled in the upper drum 150 is heated to become the steam 50. The steam 50 passes through the water pipe 170 and the saturated steam is dried by the superheated steam, 150 to the outside of the steam piping 152.

The steam pipe 152 is formed through the upper part of the upper drum 150 and the water pipe 170 is connected to the steam 50 in the saturated steam state in the upper drum 150 through the header water pipe 172. [ The steam in the water pipe 170 is connected to the main main pipe 174 in a state of being dried with the superheated steam while the water pipe 170 passes through the first and second superheaters 130 and 140. [ And the steam 50, which is dried through the steam pipe 152, is supplied to the outside and used as an energy source.

As a result, the energy recovery unit 100 generates saturated steam using the flue gas 30 generated in the combustion furnace 10, and the saturated steam flows in the water pipe 170, The first and second superheaters 130 and 140 receive the heat and the saturated steam in the water pipe 170 becomes the steam 50 dried by the superheated steam so that the energy source can be used.

Meanwhile, the drift preventing unit 200 prevents the flue gas 30, which is biased to one side by centrifugal force or inertia, from drifting in the process of flowing the flue gas 30 flowing in the energy recovery unit 100 So that the flue gas 30 can be diffused evenly.

The flow prevention unit 200 may prevent the flow of the exhaust gas 30 from the flow chamber 120 to the first superheater 130 so that the connection between the flow chamber 120 and the first superheater 130 The exhaust gas 30 is disposed at a connecting portion between the flow chamber 120 and the first superheater 130 to prevent the exhaust gas 30 from drifting due to a change in the flow direction of the exhaust gas 30 due to the structure, And a first screen tube 210 for guiding the flow direction of the first screen tube 210.

The deviation preventing unit 200 is installed in the discharge hopper 101 formed below the first superheater 130 while flowing the exhaust gas 30 through the first screen tube 210, And an elevating guide plate 220 disposed at the bottom of the first superheater 130 at an adjacent position of the discharge hopper 101 to prevent the exhaust gas from entering .

In order to prevent the flue gas 30 flowing through the lifting guide plate 220 from being deflected by the first superheater 130, the drift preventing part 200 may be provided in the first superheater 130, And a plurality of holes 235 are formed in the width direction to guide the exhaust gas 30 to be uniformly diffused and flowed in the first superheater 130 through the holes 235 And may include a uniform flow plate 230.

When the flue gas 30 passing through the uniform flow plate 230 flows from the first superheater 130 to the second superheater 140, the drift preventing unit 200 prevents the first superheater 130 The first superheater 130 and the second superheater 140 are connected to each other in order to prevent the exhaust gas 30 from drifting due to a change in the flow direction of the exhaust gas 30, And a second screen tube 240 disposed between the first screen tube 140 and the second screen tube 240 to guide the flow direction of the exhaust gas 30.

The first screen tube 210 is connected to the flow chamber 120 and the first superheater 130 to prevent drift during the flow of the exhaust gas 30 flowing from the flow chamber 120. [ So as to guide the flow direction of the flue gas 30. [

That is, the flow chamber 120 and the first superheater 130 are disposed in parallel with each other, and between the flow chamber 120 and the first superheater 130, The flow path 132 is provided so that the exhaust gas 30 flows into the first superheater 130 from the flow chamber 120 through the first flow path 132.

Since the flow chamber 120 and the first superheater 130 are arranged in parallel to each other, the flow from the flow chamber 120 to the first super heater 130 through the first flow path 132, The exhaust gas 30 is subjected to abrupt rotation.

The abrupt rotation of the flue gas 30 may cause part of the inlet of the first superheater 130 adjacent to the first flow path 132 to be continuously worn. Since the flow is induced while the impact of the exhaust gas 30 is relieved, the inlet of the first superheater 130 can be prevented from being worn.

A second flow path 142 is formed between the first super heater 130 and the second super heater 140 to form a passage of the exhaust gas 30. The exhaust gas 30 flows into the second flow path 142 from the first superheater 130 to the second expander 140. In this case,

The first superheater 130 and the second expander 140 are disposed in parallel with each other so that the first superheater 130 and the second superheater 130 are disposed in the flow chamber 120 through the second flow path 142, So that the exhaust gas 30 is rapidly rotated.

The inlet of the second superheater 140 adjacent to the second flow path 142 may be partially worn by the abrupt rotation of the exhaust gas 30, The second superheater 140 is disposed at the entrance of the second superheater 140 to induce the flow while relieving the impact of the exhaust gas 30, thereby preventing the inlet of the second superheater 140 from being worn.

The lifting guide plate 220 is formed on the bottom surface of the first superheater 130 through which the exhaust gas 30 having passed through the first flow path 132 flows.

The discharge hopper 101 is installed under the first superheater 130 so that heavy dust in the exhaust gas 30 can be dropped into the discharge hopper 101. The elevation induction plate 220 can be used for discharging exhaust gas Thereby preventing the dust in the hopper 30 from dropping into the discharge hopper 101 even with a small amount of dust.

That is, the lifting guide plate 220 is provided between the first flow path 132 and the discharge hopper 101, passes through the first flow path 132, and flows into the first superheater 130 So that the flue gas 30 can be moved up and down in front of the discharge hopper 101 while the inflow flue gas 30 hits the lifting guide plate 220.

In addition, the uniform flow plate 230 may prevent the flue gas 30 flowing through the lifting guide plate 220 from being deflected by the first superheater 130, And a plurality of holes 235 are formed in the width direction to guide the exhaust gas 30 to be uniformly diffused and flowed in the first superheater 130 through the holes 235 Role.

Since the uniform flow plate 230 is disposed in the first superheater 130 in the width direction of the first superheater 130, the exhaust gas 30 passing through the first superheater 130, It is necessary to pass the uniform flow plate 230 to maintain the flow.

That is, since the plurality of perforations 235 are formed in the uniform flow plate 230 and the perforations 235 are uniformly disposed on the entire surface of the uniform flow plate 230, The exhaust gas 30 passing through the first superheater 230 can flow while being uniformly spread in the first superheater 130.

4 is a view showing an exhaust gas flow of an exhaust gas flow induction apparatus for boiler heat exchange according to the present invention.

5 is a view showing an embodiment according to Fig.

4 and 5, the exhaust gas flow induction apparatus for boiler heat exchange according to the present invention includes a flue gas 30 generated in a combustion furnace 10 where a solid fuel is burnt, An energy recovery unit 100 for generating steam 50 through the heat of the exhaust gas 30 and an energy recovery unit 100 installed in the energy recovery unit 100 and flowing in the energy recovery unit 100 And a drift preventing part 200 for preventing the flue gas 30 which is biased to one side by the centrifugal force or the inertia in the process of flowing the flue gas 30 and allowing the flue gas 30 to flow while being evenly diffused .

The energy recovery unit 100 includes a gas chamber 110 for removing nitrogen oxides in the exhaust gas 30 introduced from the combustion furnace 10, A first superheater 130 connected to the flow chamber 120 and a second super heater 130 connected to the gas chamber 110 and the flow chamber 120. [ 130 and 140 so that the dust contained in the exhaust gas 30 can be dropped and discharged to the outside.

The energy recovery unit 100 includes an upper drum 150 formed on the first and second superheaters 130 and 140 and filled with water 70, A lower drum 160 formed at a lower portion of the heaters 130 and 140 and filled with water 70 and a lower drum 160 connected to the upper drum 150 and the lower drum 160, The first super heater 130 and the second super heater 140 may receive heat from the exhaust gas passing through the first super heater 130 and the second super heater 140, (Not shown).

The upper drum 150 is exposed to the exhaust gas 30 passing through the first superheater 130 and the second superheater 140 to receive the heat of the exhaust gas 30, The water 70 filled in the upper drum 150 is heated to become the steam 50. The steam 50 passes through the water pipe 170 and the saturated steam is dried by the superheated steam, 150 to the outside of the steam piping 152.

Hereinafter, a process of generating the steam 50 through the flue gas 30 and the flue gas 30 generated in the combustion furnace 10 will be described.

First, the solid fuel is burned in the combustion furnace 10, and an exhaust gas 30 is generated.

The exhaust gas 30 generated in the combustion furnace 10 flows into the gas chamber 110.

At this time, the temperature of the exhaust gas 30 flowing into the gas chamber 110 from the combustion furnace 10 is maintained at 900 to 1100 ° C.

In this way, the exhaust gas 30 introduced into the gas chamber 110 is allowed to remove nitrogen oxides (NOx) through the injection of urea water into the gas chamber 110.

Dust having a weight higher than the set weight of the dust contained in the exhaust gas 30 introduced into the gas chamber 110 falls into the discharge hopper 101 disposed at the lower portion of the gas chamber 110, .

The exhaust gas 30 from which nitrogen oxide (NOx) has been removed from the gas chamber 110 is introduced into the flow chamber 120 connected in series with the gas chamber 110 and flows into the flow chamber 120 The temperature of the exhaust gas 30 is maintained at 700 to 800 ° C.

Dust in the flow chamber 120 which is heavier than the set weight of the dust contained in the exhaust gas 30 introduced into the flow chamber 120 flows into the discharge hopper 101 disposed at the lower portion of the flow chamber 120, And is discharged to the outside.

Subsequently, the exhaust gas 30 passing through the flow chamber 120 is sequentially introduced into the first and second superheaters 130 and 140. In the flow chamber 120, the first and second superheaters 130, The temperature of the flue gas 30 flowing into the flue gas 140 is maintained at 600 to 700 ° C.

At this time, a plurality of water tubes 170 are disposed on the inner and wall surfaces of the first and second superheaters 130 and 140 so that the exhaust gas 30 passes through the first and second superheaters 130 and 140, The heat of the heat exchanger 30 is transmitted to the water pipe 170.

Heat of 600 to 700 ° C of the flue gas 30 is transferred to the water tube 170 so that the upper drum 150 formed on the water tube 170 and the lower drum 160 formed on the lower side are filled The water 70 is boiled and the water 70 is boiled and the water 70 is introduced into the water pipe 170 by the steam 50 of saturated steam at a temperature of 130 to 300 ° C., The steam is supplied to the first and second superheaters 130 and 140 through the exhaust gas 30 so that the steam 50 in the water pipe 170 can be dried in a superheated steam state at 380 to 450 ° C. do.

The upper drum 150 is exposed to the exhaust gas 30 passing through the first superheater 130 and the second superheater 140 to transfer the heat of the exhaust gas 30 The water 70 filled in the upper drum 150 is heated to become the steam 50. The steam 50 passes through the water pipe 170 and the saturated steam is dried with the superheated steam, And a steam pipe 152 for supplying steam to the outside of the steam generator 150.

In addition, the water pipe 170 includes a header water pipe 172 into which the steam 50 generated in the upper part of the upper drum 150 flows, and a steam 50 flowing into the header water pipe 172, The steam is passed through the first superheater 130 and the second superheater 140 in the first and second superheaters 140 and 170 to be exposed to the exhaust gas 30 to receive the heat of the exhaust gas 30, And a main main pipe 174 connected to the steam pipe 152 so as to be supplied to the outside through the steam pipe 152.

More specifically, the water pipe 170 receives heat from the exhaust gas passing through the first superheater 130 and the second superheater 140, and the water pipe 170 is connected thereto The water 70 of the upper drum 150 and the lower drum 160 is boiled and the water 70 is boiled and the steam 50 is generated.

The steam 50 thus generated enters the water pipe 170 through the header water pipe 172 of the water pipe 170 formed in the upper drum 150 in a saturated steam state at 130 to 300 ° C.

The steam 50 in the state of saturated steam entering the water pipe 170 through the header water pipe 172 flows in the water pipe 170 so that the upper drum 150 and the lower drum 160 are operated simultaneously The connecting water pipe 170 is exposed to the exhaust gas 30 in the first and second superheaters 130 and 140 so that the steam 50 in the water pipe 170 can be dried with superheated steam at 380 to 450 ° C. do.

The steam 50 dried in superheated steam at 380 to 450 ° C. in the water pipe 170 is disposed in the upper drum 150 and one side is connected to the water pipe 170 and the other side is connected to the steam pipe 152 The steam 50 is supplied to the outside of the upper drum 150 through the steam pipe 152. The steam is supplied to the steam pipe 152 through the main pipe 174 connected to the steam pipe 152, It can be used as an energy source.

The temperature of the steam 50 in which the steam 50 is changed from the saturated steam to the superheated steam in the upper drum 150 is 130 to 300 ° C in the case of saturated steam and maintained in the range of 380 to 450 ° C in the case of superheated steam .

The heat of the exhaust gas 30 of the first and second superheaters 130 and 140 is transmitted to the water pipe 170 so that the water 70 of the upper drum 150 and the lower drum 160 flows into the steam 50 The water 70 is exhausted from the upper drum 150 and the lower drum 160 connected to the water pipe 170. The upper drum 150 and the lower drum 160 ), The water is supplied from the outside in real time.

The energy recovery unit 100 is connected to the upper drum 150 and the lower drum 160 to supply a water 70 to the upper drum 150 and the lower drum 160 180 < / RTI >

The water supply unit 180 is connected to the upper drum 150 and the lower drum 160 and is connected to a water supply pipe 182 for supplying the water 70 directly to the upper drum 150 and the lower drum 160. ). ≪ / RTI >

The energy recovery unit 100 is indirectly connected to the water supply unit 180 and the water supply pipe 182 while being connected to the second superheater 140, When the temperature of the water 70 supplied to the upper drum 150 and the lower drum 160 from the water supply unit 180 by providing the residual heat to the water supply unit 180 and the water supply pipe 182 is 80 To 140 deg. C, for example.

The exhaust gas 30 passing through the first and second super heaters 130 and 140 while transferring heat from the first and second super heaters 130 and 140 to the water pipe 170 is discharged to the first and second super heaters 130 and 140, And the water supply pipe 182 is disposed on the inside or the inner wall of the absorbent unit 190 so that the water supply pipe 182 is connected to the absorbent unit 190 It is possible to receive the residual heat of the exhaust gas 30 which is introduced into the exhaust gas purifying apparatus.

Since the temperature of the flue gas 30 flowing into the silk screen 190 is maintained at 300 to 400 ° C., the temperature of the water 70 in the water supply pipe 182 connected to the silk screen 190 is 80 Lt; RTI ID = 0.0 > 140 C. < / RTI >

The exhaust gas 30 having passed through the silk screening machine 190 is finally discharged to the outside as a harmless gas through the exhaust gas processor 90 which filters the exhaust gas 30 and discharges the exhaust gas to the outside.

Particularly, the water pipe 170 is indirectly connected to the cutlery 190 to receive the heat of the flue gas 30 flowing into the cutlery 190.

The temperature of the water 70 in the water supply pipe 182 receiving heat from the flue gas 30 introduced into the silk screen 190 may preferably be maintained at 80 to 140 ° C.

As a result, the water 70 of the water supplier 180 receives heat by the flue gas 30 of the cutlery 190 and is supplied to the water supply pipe 182 through the water supply pipe 182 while maintaining a temperature of 80 to 140 ° C. The water 70 is supplied to the upper drum 150 and the lower drum 160.

The water 70 supplied from the water supply unit 180 to the lower drum 160 through the water supply pipe 182 is discharged from the lower drum 160 to the upper drum 150 through the water 70 and the steam 50, The water 70 can be circulated from the upper drum 150 to the water supply 180 when the water 70 flows into the upper drum 150 and the amount of water 70 becomes equal to or greater than the predetermined amount.

The water 70 is simultaneously supplied to the upper drum 150 and the lower drum 160 through the water supply pipe 182 in the water supply unit 180 so that the water 70 The steam can be further filled into the upper drum 150 and the lower drum 160 when the steam is supplied to the external use place through the steam pipe 152 as the steam 50. [ It is natural.

6 is a view showing a main part of a flue gas flow induction device for boiler heat exchange according to the present invention.

6, the exhaust gas flow induction apparatus for boiler heat exchange according to the present invention includes a flue gas 30 generated in a combustion furnace 10, into which solid fuel is burnt, An energy recovery unit 100 for generating the steam 50 through the heat of the exhaust gas 30 and an exhaust gas purifier 30 disposed inside the energy recovery unit 100 and flowing inside the energy recovery unit 100 And a drift preventing part 200 for preventing the flue gas 30 which is biased to one side by centrifugal force or inertia during the flow of the flue gas 30 to flow while allowing the flue gas 30 to diffuse evenly.

The energy recovery unit 100 includes a gas chamber 110 connected to the combustion furnace 10 and configured to remove nitrogen oxides in the exhaust gas 30 introduced into the combustion furnace 10, And a flow chamber 120 connected to the gas chamber 110 and removing heavy dust that is heavier than the set weight of the exhaust gas 30 introduced from the gas chamber 110.

The energy recovery unit 100 is connected to the flow chamber 120 to generate the steam 50 through the heat of the exhaust gas 30 introduced from the flow chamber 120 and convert the saturated steam into superheated steam The first and second super heaters 130 and 140 disposed below the gas chamber 110 and the flow chamber 120 and the first and second superheaters 130 and 140, And a discharge hopper 101 for discharging dust to the outside.

The exhaust gas 30 introduced into the gas chamber 110 is removed from the gas chamber 110 through the injection of urea water.

The gas chamber 110 includes a plurality of injection nozzles (not shown) for injecting urea water into the flue gas 30 so that nitrogen oxides (NOx) in the flue gas 30 introduced into the combustion furnace 10 can be removed. 112).

In addition, the gas chamber 110 is staggeredly arranged in a plate shape on the upper and lower portions of the gas chamber 110, so that the amount of dust contained in the exhaust gas 30 passing through the gas chamber 110 A plurality of shut-off plates 114 may be provided to prevent dust from entering the first and second super heaters 130 and 140 at first.

The injection nozzle 112 injects the exhaust gas passing through the gas chamber 110 to remove nitrogen oxide (NOx) in the exhaust gas 30.

The injection nozzle 112 injects urea water into the flue gas 30 so that the flue gas in the flue gas 30 is combined with the fluid to increase the weight of the flue gas and smoothly flows into the discharge hopper 101 disposed under the gas chamber 110 So that it can be dropped.

A plurality of blocking plates 114 are disposed in the gas chamber 110 so that the gas is supplied from the lower portion of the gas chamber 110 at a position adjacent to a portion where the exhaust gas 30 enters the combustion furnace 10, A first blocking plate 114 may be provided in a direction away from the first blocking plate 114 and a second blocking plate 114 may be disposed in a downward direction from an upper surface of the gas chamber 110 at a position spaced apart from the first blocking plate 114 , And a third blocking plate 114 may be disposed upward in the lower surface of the gas chamber 110 at a position spaced apart from the second blocking plate 114.

Here, dust having a weight greater than the set weight of the dust contained in the exhaust gas 30 introduced from the combustion furnace 10 can not be passed through the first blocking plate 114, and the dust is primarily filtered.

Subsequently, the exhaust gas 30 passing through the first blocking plate 114 is exposed to the urea water injected from the injection nozzle 112, and at the same time, the second blocking plate 114 collides with the dust, The flue gas 30 dropped to the hopper 101 and discharged to the outside and the dust is partially removed passes through the second blocking plate 114 and flows into the third blocking plate 114 while being dusted secondarily.

In the third blocking plate 114, dust having a weight greater than the set weight of the dust contained in the exhaust gas 30 can not pass through the third blocking plate 114 and is dusted in the third order.

As a result, the exhaust gas 30 introduced into the gas chamber 110 is exhausted when the nitrogen oxide (NOx) is removed through the injection nozzle 112 and dust having a weight higher than the set weight is removed through the blocking plate 114 So that it can flow into the flow chamber 120.

7 is a view showing an embodiment of a flue gas flow induction apparatus for boiler heat exchange according to the present invention.

8 is a view showing an embodiment according to Fig.

7 and 8, the exhaust gas flow induction apparatus for boiler heat exchange according to the present invention includes a flue gas 30 generated in a combustion furnace 10, in which solid fuel is burnt, An energy recovery unit 100 installed in the energy recovery unit 100 to generate steam 50 through the heat of the exhaust gas 30, And a drift preventing part 200 that prevents drift of the exhaust gas 30 that is biased to one side due to centrifugal force or inertia in the process of flowing the exhaust gas 30 and allows the exhaust gas 30 to flow while being diffused evenly.

As described above, the drift preventing unit 200 prevents the flow of the exhaust gas 30 from the flow chamber 120 to the first superheater 130 when the flow chamber 120 and the first superheater 130 130 are disposed at a connection portion between the flow chamber 120 and the first superheater 130 to prevent the flue gas 30 from drifting due to the flow direction of the flue gas 30 being changed to be orthogonal And a first screen tube 210 for guiding the flow direction of the exhaust gas 30.

The deviation preventing unit 200 is installed in the discharge hopper 101 formed below the first superheater 130 while flowing the exhaust gas 30 through the first screen tube 210, And an elevating guide plate 220 disposed at the bottom of the first superheater 130 at an adjacent position of the discharge hopper 101 to prevent the exhaust gas from entering .

In order to prevent the flue gas 30 flowing through the lifting guide plate 220 from being deflected by the first superheater 130, the drift preventing part 200 may be provided in the first superheater 130, And a plurality of holes 235 are formed in the width direction to guide the exhaust gas 30 to be uniformly diffused and flowed in the first superheater 130 through the holes 235 And may include a uniform flow plate 230.

When the flue gas 30 passing through the uniform flow plate 230 flows from the first superheater 130 to the second superheater 140, the drift preventing unit 200 prevents the first superheater 130 The first superheater 130 and the second superheater 140 are connected to each other in order to prevent the exhaust gas 30 from drifting due to a change in the flow direction of the exhaust gas 30, And a second screen tube 240 disposed between the first screen tube 140 and the second screen tube 240 to guide the flow direction of the exhaust gas 30.

The first screen tube 210 includes a first tube column 212 vertically disposed at a connecting portion between the flow chamber 120 and the first superheater 130, A pair of plate-shaped first wings (210) which are detachably connected to the first tube columns (212) while enclosing the tube columns (212) and which can change the flow direction of the exhaust gas (30) And a first tightening bolt 216 passing through the pair of first wing plates 214 and capable of tightly tightening the first wing plate 214 to the first tube pillar 212 .

The second screen tube 240 includes a second tube column 242 vertically disposed at a connection portion between the first super heater 130 and the second super heater 140, A pair of plate-shaped second tubes 242 which are detachably connected to the second tube columns 242 while enclosing the two tube columns 242 and have an inclination angle to both sides and capable of changing the flow direction of the exhaust gas 30 A second fastening bolt 246 that penetrates the pair of second wing plates 244 and can be tightly fixed to the second tube post 242 by the second wing plate 244, . ≪ / RTI >

In addition, the energy recovery unit 100 may be configured such that the flow chamber 120 and the first superheater 130 are disposed in parallel with each other, and the flow chamber 120 is formed between the flow chamber 120 and the first superheater 130 And a first flow path (132) forming a passage of the flue gas (30).

The energy recovery unit 100 includes a first super heater 130 and a second super heater 140 arranged in parallel to each other and a first super heater 130 and a second super heater 140, And a second flow path 142 formed between the first and second flow paths to form a path of the exhaust gas 30. [

The flow chamber 120 and the first superheater 130 are disposed in parallel with each other and the first flow path 132 is formed between the flow chamber 120 and the first superheater 130 So that the exhaust gas 30 of the flow chamber 120 can be introduced into the first superheater 130.

The first screen tube 210 is disposed at a connection portion between the flow chamber 120 and the first superheater 130 at a position adjacent to the first flow path 132, When the flue gas 30 flows into the first superheater 130, the inner wall of the first screen tube 210 is prevented from being continuously worn due to centrifugal force and inertia.

Accordingly, the first screen tube 210 is disposed inside the first screen tube 210 at a position adjacent to the first flow path 132, and a plurality of the first tube columns 212 are disposed inside the first screen tube 210 The first wing plate 214 is detachably connected to the first tube pillar 212 by the first tightening bolt 216.

The first wing plate 214 passes through the first flow path 132 and flows into the first superheater 130 from the flow chamber 120 to form a curved line. It is preferable to form the arc shape having a curved surface so as to flow into the heater 130 and flow.

The first superheater 130 is formed in a curved shape by the exhaust gas flowing into the first superheater 130 through the first flow path 132 due to the shape of the first blade 214, So that wear in the first superheater 130 due to collision of the exhaust gas 30 can be prevented.

In addition, when the first wing plate 214 is partially damaged or worn by the continuous collision of the exhaust gas 30, the first tightening bolt 216 is removed to remove the first wing plate 212 from the first tube column 212, The plate 214 can be detached and replaced.

The flue gas 30 flowed by the first screen tube 210 passes through the lifting guide plate 220 in the first superheater 130.

The lifting guide plate 220 may be formed in the first screen tube 210 so as to prevent exhaust gas 30 flowing in the direction in which the discharge hopper 101 is formed from being discharged to the discharge hopper 101 in a large amount. The exhaust gas 30 is disposed at a position before reaching the discharge hopper 101 so that the exhaust gas 30 collides with the lifting guide plate 220 to be lifted and lowered to prevent a large amount of the exhaust gas 30 from flowing out to the discharge hopper 101 However, only the dust having a weight higher than the weight set in the dust contained in the exhaust gas 30 can be dropped into the discharge hopper 101 and discharged to the outside.

The lifting guide plate 220 is disposed between the first screen tube 210 and the discharge hopper 101 formed under the first superheater 130 so that the first superheater 130, An exhaust gas purifying apparatus according to the present invention includes a first screen tube 210 and a second screen tube 210. The first screen tube 210 is disposed on the bottom surface of the discharge hopper 101, And may include an inclined surface 222 which is provided with a plurality of inclined surfaces.

That is, before the flue gas 30 flowing through the first screen tube 210 in the first superheater 130 through the inclined surface 222 reaches the discharge hopper 101, the slope 222 So that it is possible to effectively prevent the exhaust gas 30 from flowing out to the discharge hopper 101 in a large amount.

The exhaust gas 30 having passed through the lifting guide plate 220 and the discharge hopper 101 in the first screen tube 210 passes through the uniform flow plate 230 in the first screen tube 210 .

The uniform flow plate 230 guides the exhaust gas 30 having passed through the lifting guide plate 220 and the discharge hopper 101 to spread uniformly in the first superheater 130 Role.

The uniform flow plate 230 is disposed on the first superheater 130 in a plate shape in the width direction and has a plurality of perforations 235 formed therein so that the exhaust gas 30 flows through the perforations 235 So that it can be uniformly diffused and flowed in the first superheater 130.

That is, the uniform flow plate 230 covers the entire widthwise surface of the first superheater 130, and a plurality of holes 235 are uniformly arranged in the uniform flow plate 230, The exhaust gas 30 passing through the plate 230 spreads in the first superheater 130 by the perforations 235 to uniformly diffuse and flow.

The exhaust gas 30 having passed through the uniform flow plate 230 flows into the second superheater 140 arranged and connected to the first superheater 130 in parallel.

The exhaust gas 30 in the first superheater 130 flows through the second flow path 142 formed between the first superheater 130 and the second superheater 140 arranged in parallel with the first superheater 130, The second superheater 140 can be introduced into the second superheater 140.

The second screen tube 240 may be disposed at a connecting portion between the first super heater 130 and the second super heater 140 at a position adjacent to the second flow path 142, The inner wall of the second screen tube 240 is prevented from being continuously worn due to centrifugal force and inertia when the exhaust gas 30 of the heater 130 flows into the second superheater 140.

To this end, the second screen tube 240 includes a plurality of second tube columns 242 disposed within the second screen tube 240 at a location adjacent to the second flow path 142, The second wing plate 244 is detachably connected to the second tube pillar 242 by a second tightening bolt 246.

The second wing plate 244 curves the exhaust gas 30 flowing from the first superheater 130 to the second superheater 140 through the second flow path 142, And is preferably formed in a shape of arc having a curved surface in order to flow into the heater 140 and to be flowed.

Due to the shape of the second wing plate 244, the exhaust gas 30 passing through the second flow path 142 and flowing into the second superheater 140 is curved to form the second superheater 140, So that wear of the second superheater 140 due to collision of the exhaust gas 30 can be prevented.

In addition, when the second wing plate 244 is partially broken or worn by the continuous collision of the flue gas 30, the second tightening bolt 246 is removed so that the second wing plate 244, The plate 244 can be detached and replaced.

The exhaust gas flow induction device for boiler heat exchange according to the present invention minimizes wear and tear of the inside of the boiler chamber during the flow of the exhaust gas generated from the combustion furnace into the chamber of the boiler having the water pipe, It is possible to obtain an advantage that it can be extended.

In addition, when the inside of the boiler chamber is partially worn or damaged, the worn portion can be easily separated and repaired or replaced, thereby improving the working efficiency.

In addition, it is possible to maximize the heat energy of the flue gas of the combustion furnace, maximize the steam generation efficiency, and recycle the energy, thereby achieving the advantage of optimizing the production efficiency.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that the invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

10: combustion furnace 30: exhaust gas
50: steam 70: water
100: Energy recovery unit 101: Exhaust hopper
110: gas chamber 120: flow chamber
130: first super heater 140: second super heater
150: upper drum 160: lower drum
170: Water pipe 180: Water feeder
190: Buddhist scriptures
200: drift preventing part 210: first screen tube
220: lift-up guide plate 230: uniform flow plate
240: second screen tube

Claims (12)

An energy recovery unit (100) for generating an exhaust gas (50) through heat of an exhaust gas (30) generated in a combustion furnace (10) as a space where a solid fuel is burnt. And
In the process of flowing the exhaust gas 30 which is provided inside the energy recovery unit 100 and flows in the energy recovery unit 100, the exhaust gas 30, which is biased to one side by centrifugal force or inertia, And a drift preventing part (200) for allowing the flue gas (30) to flow while being evenly diffused.
The method according to claim 1,
The energy recovery unit (100)
A gas chamber 110 connected to the combustion furnace 10 for removing nitrogen oxides in the exhaust gas 30 introduced from the combustion furnace 10,
A flow chamber 120 connected to the gas chamber 110 and removing dust falling from the exhaust gas 30 flowing into the gas chamber 110,
A first superheater 130 connected to the flow chamber 120 to generate the steam 50 through the heat of the exhaust gas 30 introduced from the flow chamber 120 and to convert the saturated steam into superheated steam, , 140,
The exhaust gas discharged from the exhaust gas exhausted from the gas chamber 110 and the flow chamber 120 and the first and second superheaters 130 and 140, A flue gas flow induction device for boiler heat exchange comprising a hopper (101).
3. The method of claim 2,
The drift preventing part (200)
When the exhaust gas flows into the first superheater 130 from the flow chamber 120 due to the connection structure between the flow chamber 120 and the first superheater 130, A first screen tube 210 disposed at a connection portion between the flow chamber 120 and the first superheater 130 to guide the flow direction of the exhaust gas 30 to prevent the flue gas 30 from drifting, )Wow,
The discharge hopper 101 formed at the lower portion of the first superheater 130 is prevented from flowing into the discharge hopper 101 when the exhaust gas flowing through the first screen tube 210 flows, A lifting induction plate 220 disposed at the bottom of the first superheater 130 at an adjacent position to guide the lifting and lowering of the exhaust gas 30,
In order to prevent the flue gas 30 flowing through the lifting guide plate 220 from being deflected by the first superheater 130, the first superheater 130 is disposed in a plate shape in the width direction, A uniform flow plate 230 that forms a perforation 235 to guide the exhaust gas 30 to diffuse and flow uniformly while spreading in the first superheater 130 through the perforations 235,
When the flue gas 30 passing through the uniform flow plate 230 flows from the first superheater 130 to the second superheater 140, the connection between the first superheater 130 and the second superheater 140 The first superheater 130 and the second superheater 140 are disposed between the first superheater 130 and the second superheater 140 to prevent the flue gas 30 from drifting due to a change in the direction of flow of the flue gas 30, And a second screen tube (240) for guiding the flow direction of the first screen tube (30).
The method of claim 3,
The first screen tube (210)
A first tube column 212 disposed in a vertical direction at a connection portion between the flow chamber 120 and the first superheater 130,
A pair of tubes which are opposed to the first tube pillar 212 and are detachably connected to the first tube pillar 212 while having a pair of inclined angles and can change the flow direction of the exhaust gas 30 A first wing plate 214 in the form of a plate,
And a first tightening bolt (216) penetrating the pair of first wing plates (214) so that the first wing plate (214) can be tightly fixed to the first tube column (212) Flue gas flow induction device.
The method of claim 3,
The lifting guide plate (220)
The first screen tube 210 is disposed on the bottom surface of the first superheater 130 between the discharge hopper 101 formed in the lower portion of the first superheater 130, And an inclined surface 222 formed at an inclination angle in an upward direction so that an exhaust gas 30 flowing in a direction in which the discharge hopper 101 is formed in the discharge hopper 210 is elevated in front of the discharge hopper 101, Flue gas flow induction device for.
The method of claim 3,
The second screen tube (240)
A second tube column 242 vertically arranged at a connecting portion between the first super heater 130 and the second super heater 140,
And a pair of tubes which are connected to the second tube column 242 so as to surround the second tube column 242 and which have a pair of inclined surfaces and which can change the flow direction of the exhaust gas 30 A second wing plate 244 in the form of a plate,
And a second tightening bolt (246) passing through the pair of second wing plates (244) and the second wing plate (244) can be tightly fixed to the second tube post (242) Flue gas flow induction device.
3. The method of claim 2,
The energy recovery unit (100)
An upper drum 150 formed on the first and second superheaters 130 and 140 and filled with water 70,
A lower drum 160 formed below the first and second superheaters 130 and 140 and filled with water 70,
The first super heater 130 and the second super heater 130 are connected to the upper drum 150 and the lower drum 160 while the steam 50 generated in the upper drum 150 is vertically connected to the upper drum 150 and the lower drum 160, And a plurality of water tubes (170) arranged in the first superheater (130) and the second superheater (140) so as to receive the heat of the flue gas (30) passing through the flue gas heat exchanger Device.
8. The method of claim 7,
The upper drum (150)
The water pipe 170 is exposed to the exhaust gas passing through the first superheater 130 and the second superheater 140 to receive the heat of the exhaust gas 30, The water 70 is heated and becomes the steam 50. The steam 50 passes through the water pipe 170 so that the saturated steam can be dried by the superheated steam and supplied to the outside of the upper drum 150 Further comprising a steam line (152).
9. The method of claim 8,
The energy recovery unit (100)
A water supply unit 180 connected to the upper drum 150 and the lower drum 160 to supply the water 70 to the upper drum 150 and the lower drum 160,
The exhaust gas 30 indirectly connected to the water supplier 180 and connected to the second super heater 140 and passing through the second super heater 140 provides residual heat to the water supplier 180, (190) for maintaining the temperature of the water (70) supplied to the upper drum (150) and the lower drum (160) at 80 to 140 ° C in the heat exchanger (180) guide.
3. The method of claim 2,
The gas chamber (110)
A plurality of injection nozzles 112 for injecting urea water into the flue gas 30 so that nitrogen oxides in the flue gas 30 introduced from the combustion furnace 10 can be removed,
Dust separated from the dust contained in the exhaust gas (30) passing through the gas chamber (110) in a zigzag manner in a plate shape on the upper and lower sides of the gas chamber (110) Further comprising a shutoff plate (114) having a plurality of shutoff valves (130, 140) to prevent entry of the shutoff valve (130, 140).
The method of claim 3,
The energy recovery unit (100)
The flow chamber 120 and the first superheater 130 are disposed in parallel to each other and are formed between the flow chamber 120 and the first superheater 130 to form a first passage 130, A flow path 132,
The first superheater 130 and the second superheater 140 are disposed in parallel to each other and are formed between the first superheater 130 and the second superheater 140, And a second flow path (142) that forms the second flow path (142).
9. The method of claim 8,
The water pipe (170)
A header water pipe 172 through which the steam 50 generated in the upper portion of the upper drum 150 flows,
The steam 50 flowing into the header water pipe 172 flows into the flue gas 30 through the flue gas 30 through the first superheater 130 and the second superheater 140 in the water pipe 170, Further comprising a main main pipe (174) connected to the steam pipe (152) so that the saturated steam can be supplied to the outside through the steam pipe (152) Flue gas flow induction device for.

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