White smoke and particulate matter reducing apparatus

Abstract

The present invention relates to a white smoke and fine dust removal device comprising: a supply duct for supplying high-temperature exhaust gas; a first heat exchanger for cooling the high-temperature exhaust gas to provide a primary cooling exhaust gas; a bypass duct for bypassing the primary cooling exhaust gas; a first collection chamber for collecting the bypassed exhaust gas; an outside air supplyer for supplying outside air; a second heat exchanger for heat-exchanging the outside air from the outside air supplyer in a separated state to provide a secondary cooling exhaust gas; a filter chamber equipped with a filter for removing white smoke and fine dust from the secondary cooling exhaust gas; a second collection chamber for collecting the exhaust gas that has passed through the filter; and a discharger for discharging the collected exhaust gas; wherein the exhaust gas can be discharged without mixing with outside air.

Description

Technology Field

[0001] The present invention relates to a white smoke and fine dust removal device for removing white smoke and fine dust from high-temperature exhaust gas emitted from industrial facilities, etc. Background Technology

[0002] Generally, combined heat and power plants, large buildings, and industrial facilities such as factories and steel mills are equipped with heating devices such as boilers, and exhaust gases from these devices are discharged through exhaust pipes or chimneys. These exhaust gases contain large amounts of white smoke and fine dust.

[0003] Korean Patent Registration No. 10-2264531 (Nuriplan Co., Ltd.), which was filed and registered by the applicant of the present invention, is an invention for removing or reducing white smoke and fine dust from exhaust gas as described above, comprising: a housing (110) having a tubular structure that provides a fluid movement and processing space in which exhaust gas is introduced and then moved, and then discharged as exhaust air after the white smoke and fine dust have been removed and processed; and a heat exchange means (120) located on one side inside the housing (110) that allows heat exchange between the high-temperature exhaust gas introduced into the housing (110) and the exhaust air in which the high-temperature exhaust gas is mixed with the outside air and becomes white smoke, and then the white smoke and fine dust have been removed and processed by a magic filter means (130), thereby raising and lowering the temperature and humidity of the exhaust air so that white smoke is reduced when the exhaust air is discharged to the outside. A magic filter means (130) located in the middle of the interior of the housing (110) and removing white smoke and fine dust particles from the exhaust gas that has been heated by the heat exchange means (120) and mixed with outside air to become white smoke through condensation and condensation, thereby moving toward the heat exchange means (120) in a clean exhaust air state; and a discharger (140) configured to communicate with one side of the heat exchange means (120) of the housing (110) and configured to discharge the exhaust air processed by the magic filter means (130) and the heat exchange means (120) to the outside, wherein the housing (110) comprises: a main body (111) having a tubular structure; and an inlet (112) configured to communicate with one side of the upper surface outside of the main body (111) and configured to allow exhaust gas to flow into the interior of the main body (111); An inlet passage (113) configured to be connected from one side of the lower exterior of the main body (111) to the other side, allowing exhaust gas introduced into the inlet (112) to move to the other side of the main body (111); an external air inlet (114) configured to be connected between the front and rear exteriors of the main body (111), allowing external air to be introduced into the interior of the main body (111) so that when the exhaust gas moves to one side of the main body (111), it becomes white smoke; and an exhaust port (115) configured to be connected between the right exterior of the main body (111), allowing exhaust air to be discharged from the main body (111).The white smoke and fine dust removal device is characterized by including an access door (116) installed on the other side of the front of the main body (111) to open and close the interior of the main body (111) and to enable the installation and maintenance of the above components, and the heat exchange means (120) is a plate heat exchanger (PHE) installed in the space between the inlet (112) and one side of the inlet path (113) of the housing (110), and further comprising a heat transfer coating layer formed by mixing a first coating agent, which provides a function of diffusing heat, and a second coating agent, which provides a function of preventing corrosion and deterioration, in a 1:1 volume ratio and then coating the surface of the passage path through which exhaust gas and exhaust air pass in an alternating state.

[0004] This conventional technology has the effect of reducing white smoke by allowing white smoke and fine dust particles from exhaust gas generated at an industrial site to be removed by condensing or condensing by a magic filter means (130) composed of multiple filtration means after being introduced into the housing, and at the same time allowing exhaust air discharged to the outside to be discharged after heat exchange with the exhaust gas introduced into the housing.

[0005] In such conventional technology, outside air is mixed with high-temperature exhaust gas through an outside air inlet for white smoke production. At this time, since the outside air is mixed in about three times more than the exhaust gas, the proportion of outside air in the discharged gas reaches about 60%, and accordingly, about three times more outside air than exhaust gas is mixed and discharged through the exhaust pipe or chimney.

[0006] After filing the aforementioned prior art, the applicant of the present invention continued to develop a technology capable of removing white smoke and fine dust from exhaust gas without mixing with outside air, thereby reducing the flow rate discharged through the exhaust pipe or chimney; upon the development of such technology, the present invention was filed. Prior art literature

[0007] Republic of Korea Patent Registration No. 10-2264531 (Nuriplan Co., Ltd.) The problem to be solved

[0008] The objective of the present invention is to provide a white smoke and fine dust removal device capable of removing white smoke and fine dust contained in high-temperature exhaust gas through a filter after heat exchange with high-temperature exhaust gas generated from boilers at industrial sites without mixing with the outside air, and capable of recycling waste heat.

[0009] In particular, the purpose is to provide a white smoke and fine dust removal device capable of emitting exhaust gas that is not mixed with outside air.

[0010] In addition, the purpose is to provide a white smoke and fine dust removal device that allows the heat exchanger to be installed and / or dismantled or replaced in a detachable manner, can be installed in a stable state, and additionally allows the heat of the exhaust gas to be dissipated by air cooling. means of solving the problem

[0012] A white smoke and fine dust removal device according to one embodiment of the present invention comprises: an air supply duct (150) that sucks in and supplies high-temperature exhaust gas by negative pressure; a first heat exchanger (100) in which high-temperature exhaust gas from the air supply duct (150) flows in on one side and low-temperature exhaust gas, which has been pretreated to a temperature relatively lower than that of the high-temperature exhaust gas, flows in on the other side, and in which heat exchange is performed non-contactually between the high-temperature exhaust gas and the low-temperature exhaust gas so as to prevent mixing of the high-temperature exhaust gas and the low-temperature exhaust gas, thereby primarily cooling the high-temperature exhaust gas through the low temperature of the low-temperature exhaust gas to provide primary cooled exhaust gas; a bypass duct (200) that bypasses the primary cooled exhaust gas primarily cooled in the first heat exchanger (100); and a first collection chamber (300) that collects and supplies the primary cooled exhaust gas guided through the bypass duct (200). An outside air supply unit (400) that supplies outside air for secondary temperature reduction of the primary temperature-reduced exhaust gas supplied through the first collection chamber (300); a second heat exchanger (500) that provides secondary temperature-reduced exhaust gas by non-contact heat exchange between the outside air supplied from the outside air supply unit (400) and the primary temperature-reduced exhaust gas supplied from the first collection chamber (300); and a filter chamber (600) that removes pollutants consisting of white smoke and fine dust from the secondary temperature-reduced exhaust gas provided by the second heat exchanger (500) and supplies the secondary temperature-reduced exhaust gas with purified pollutants to the first heat exchanger (100) so that the secondary temperature-reduced exhaust gas with purified pollutants is used as the pretreated low-temperature exhaust gas of the first heat exchanger (100). It includes: a second collection chamber (700) for collecting secondary reduced-temperature exhaust gas that is purified in the filter chamber (600) and supplied to the first heat exchanger (100) for heat exchange with the high-temperature exhaust gas; and a discharger (800) for releasing the secondary reduced-temperature exhaust gas collected in the second collection chamber (700) by providing negative pressure through the second collection chamber (700).

[0013] The first heat exchanger (100) comprises: a vertical flow path section (V) in which vertical flow paths are spaced apart so that the high-temperature exhaust gas supplied to the supply air duct (150) flows in a vertical state; and a horizontal flow path section (H) in which horizontal flow paths are spaced apart so that the low-temperature exhaust gas to be heat-exchanged with the high-temperature exhaust gas flows in a horizontal state, formed between the vertical flow paths in a state orthogonal to the vertical flow path of the vertical flow path section (V).

[0014] The first heat exchanger (100) comprises: a plurality of vertical square tubes (P) installed vertically spaced apart to form the vertical flow paths; and a horizontal board (B) installed between the vertical square tubes (P) to form an alternating state, and installed horizontally at the upper and lower sides of the vertical square tubes (P) respectively to connect the vertical square tubes (P) integrally and form the plurality of horizontal flow paths.

[0015] The second heat exchanger (500) comprises: a vertical flow path section (V) in which vertical flow paths are spaced apart so that outside air supplied from the outside air supply unit (400) flows in vertically; and a horizontal flow path section (H) in which horizontal flow paths are spaced apart so that the primary temperature-reducing exhaust gas of the first collection chamber (300) flows in horizontally so that it is formed between the vertical flow paths in a manner orthogonal to the vertical flow path of the second vertical flow path section (511) to exchange heat with the outside air of the second vertical flow path section (V).

[0016] The second heat exchanger (500) comprises: a plurality of vertical square tubes (P) installed vertically spaced apart to form the vertical flow paths; and a horizontal board (B) installed between the vertical square tubes (P) to form an alternating state, and installed horizontally at the upper and lower sides of the vertical square tubes (P) respectively to connect the vertical square tubes (P) integrally and form the plurality of horizontal flow paths.

[0017] The above air supply duct (150) is characterized by being composed of a vertical hollow tube into which the first heat exchanger (100) is inserted.

[0018] It further includes a fastener that detachably fixes the first heat exchanger (100) to the supply air duct (150).

[0019] The above fastener comprises: an outer flange (140) provided on the outside of the first heat exchanger (100); an inner flange (151) provided inside the supply air duct (150) so that the outer flange (140) is seated in a stacked state; and a clamp (160) that clamps the outer flange (140) seated on the inner flange (151) to the inner flange (151) so as to be detachably clamped to fix the first heat exchanger (100) inside the supply air duct (150) in an assembled manner.

[0020] The clamp (160) comprises: a rail (141) of an elongated hole formed in the outer flange (140); a guide (152) of an elongated hole formed in the inner flange (140) to correspond to the rail (141); a plurality of brackets (161) provided in the air supply duct (150); a lead screw (162) having both ends rotatably fixed to the bracket (161) and having male screws symmetrically formed in opposite states; a head (163) integrally provided with the lead screw (162) and rotating together with the lead screw (162); and a plurality of nut members (164) fastened to both sides of the lead screw (162), screw-coupled to the male screws symmetrically formed on the lead screw (162), and each moving along the symmetrically formed male screws. and a hook (165) integrally provided with the nut member (164), which moves along the guide (152) and the rail (141) by the movement of the nut member (164) and is caught on the end side of the rail (141).

[0021] The present invention further includes a radiator (320) that dissipates heat from the primary temperature-reducing exhaust gas collected in the first collection chamber (300).

[0022] The above radiator (320) comprises: a mounting plate (321) integrally installed in the first collection chamber (300); a heat absorption fin (323) provided on one side of the mounting plate (321) and protruding into the first collection chamber (300), which absorbs heat while exchanging heat with the primary temperature-reducing exhaust gas collected in the first collection chamber (300) by negative pressure and flowing through it in an air-cooled manner; and a heat dissipation fin (324) provided on the other side of the mounting plate (321) and protruding outward from the first collection chamber (300) so that the heat absorbed by the heat absorption fin (323) is dissipated.

[0023] The above radiator (320) further includes a noise damping part (322) that is integrally provided on the mounting plate (321) and protrudes into the interior of the first collection chamber (300), and divides the primary temperature-reducing exhaust gas flowing through the first collection chamber (300) to dampen the noise of the primary temperature-reducing exhaust gas caused by the flow.

[0024] The above noise damping unit (322) may be composed of a plurality of holes through which primary temperature-reducing exhaust gas flowing through the first collection chamber (300) is dispersed and passes. Effects of the invention

[0025] As described above, the present invention primarily reduces the temperature of high-temperature exhaust gas from industrial facilities flowing into the supply duct by exchanging heat with low-temperature exhaust gas from secondary reduced-temperature exhaust gas, thereby enabling primary reduction of high-temperature exhaust gas through waste heat recycling. Furthermore, since most of the components are connected in a linear arrangement, the negative pressure of the exhaust fan equipped in the discharger can be easily provided to almost all of the components. Additionally, since the bypass duct can bypass and supply high-temperature exhaust gas to the components connected in a linear arrangement, high-temperature exhaust gas flowing into the front end of the system can be easily supplied to the rear end of the system.

[0026] In particular, since the outside air and exhaust gas are heat exchanged in a non-contact or non-mixing manner in the second heat exchanger, it is possible to prevent the outside air from being mixed with the exhaust gas and discharged.

[0027] In addition, since the first heat exchanger and the second heat exchanger are composed of vertical and horizontal flow paths that alternately orthogonal to each other by separation, heat exchange can be performed while reliably preventing mixing of the fluids flowing through the vertical and horizontal flow paths.

[0028] In addition, the vertical flow section is composed of a plurality of spaced-apart vertical square tubes, and the horizontal flow section is attached horizontally to the upper and lower sides of the vertical square tubes and is composed of a horizontal board that integrally connects the spaced-apart vertical square tubes, so the vertical flow section and the horizontal flow section can be easily manufactured in an alternating state.

[0029] In addition, an outer flange that is seated on an inner flange is provided on the first heat exchanger or the second heat exchanger, and since the first heat exchanger or the second heat exchanger is detachably fixed inside the supply duct by fasteners rather than welding, the first heat exchanger can be temporarily fixed inside the supply duct through the outer flange and then detachably fixed with the fasteners, and can be easily separated and replaced when necessary, and since the outer flange is seated on and caught on the inner flange, the first heat exchanger or the second heat exchanger can be stably installed inside the supply duct or the outer pipe body.

[0030] In addition, the hook moves by the lead screw of the clamp and catches on the end side of the rail, thereby restraining the outer flange to the inner flange, so that the first heat exchanger can be easily fixed to the supply duct or easily released from the fixed state.

[0031] In addition, the heat of the primary temperature-reducing exhaust gas is absorbed through the heat absorption fins of the radiator and dissipated through the heat dissipation fins, thereby allowing the primary temperature-reducing exhaust gas to be pre-cooled by air cooling. Furthermore, the noise can be reduced by dividing the primary temperature-reducing exhaust gas into a dispersed state through the noise damping section. Moreover, by installing packing along the edges of the mounting plate or the noise damping section, the contact surface of the mounting plate can be sealed airtightly through the packing to prevent leakage of exhaust gas and thus prevent leakage of noise. Brief explanation of the drawing

[0032] FIG. 1 is a side view of a white smoke and fine dust removal device according to an embodiment of the present invention. FIG. 2 is an exploded perspective view illustrating the first heat exchanger of the present invention. FIG. 3 is a perspective view illustrating the heat exchange state of the first heat exchanger of the present invention. FIG. 4 is an exploded perspective view illustrating the second heat exchanger of the present invention. FIG. 5 is a perspective view illustrating the heat exchange state by the second heat exchanger of the present invention. FIG. 6 is a perspective view schematically illustrating the heat exchange process by the first heat exchanger and the second heat exchanger of the present invention. FIG. 7 is a perspective view showing a part of the air supply duct shown in FIG. 1. FIG. 8 is an exploded perspective view illustrating the process of inserting a first heat exchanger into the supply air duct of FIG. 7. FIG. 9 is a longitudinal section illustrating the process of inserting a first heat exchanger into the supply air duct of FIG. 7. FIG. 10 is a perspective view showing the state in which the first heat exchanger is inserted into the supply air duct shown in FIG. 9. FIG. 11 is a longitudinal section of the air supply duct shown in FIG. 10. FIG. 12 is a perspective view showing the clamping state of the clamp shown in FIG. 11. FIG. 13 is a longitudinal section of the air supply duct shown in FIG. 12. FIG. 14 is a perspective view illustrating another embodiment of the first collection chamber shown in FIG. 1. FIG. 15 is a perspective view of the radiator shown in FIG. 14. Specific details for implementing the invention

[0033] The present invention will be described in detail below with reference to the attached drawings.

[0034] A white smoke and fine dust removal device according to an embodiment of the present invention comprises, as shown in FIG. 1, a supply air duct (150), a first heat exchanger (100), a bypass duct (200), a first collection chamber (300), an external air supply unit (400), a second heat exchanger (500), a filter chamber (600), a second collection chamber (700), and an emitter (800). The supply air duct (150) is a component that sucks in and supplies high-temperature exhaust gas, i.e., high-temperature exhaust gas, identical to conventional exhaust gas, by means of the negative pressure of the emitter (800) described later, and may be composed of a hollow tube connected in a multi-stage manner as shown. As shown, the supply air duct (150) provides an intake pipe having a vertical length.

[0035] As shown in FIGS. 3 and 6, the first heat exchanger (100) receives high-temperature exhaust gas on one side through the supply air duct (150), and receives low-temperature exhaust gas on the other side through the secondary reduced-temperature exhaust gas described later, which is pretreated to a temperature relatively lower than that of the high-temperature exhaust gas. The first heat exchanger (100) is configured as shown to prevent mixing of the high-temperature exhaust gas and the low-temperature exhaust gas, thereby heat-exchanging the high-temperature exhaust gas and the low-temperature exhaust gas in a non-contact manner. Accordingly, the first heat exchanger (100) primarily reduces the temperature of the high-temperature exhaust gas through the low temperature of the low-temperature exhaust gas to provide the primary reduced-temperature exhaust gas. The first heat exchanger (100) may be embedded in the supply air duct (150) as shown in FIG. 1, or, unlike the illustration, may be embedded in a separate case (not shown) connected to the supply air duct (150).

[0036] The first heat exchanger (100) includes, for example, a vertical flow path section (V) and a horizontal flow path section (H) as shown in FIG. 3. The vertical flow path section (V) is composed of multiple vertical flow paths that form a spaced state as shown in FIG. 1 and FIG. 3, and consists of vertical flow paths into which the high-temperature exhaust gas supplied from the supply air duct (150) flows in a vertical state. The horizontal flow path section (H) is formed between the vertical flow paths in a state orthogonal to the vertical flow paths of the vertical flow path section (V) as shown, and consists of multiple horizontal flow paths into which the low-temperature exhaust gas to exchange heat with the high-temperature exhaust gas flows in a horizontal state.

[0037] As shown in FIGS. 2 and 3, the first heat exchanger (100) has a plurality of vertical square tubes (P) installed vertically spaced apart to form the vertical flow paths, and a horizontal board (B) installed alternately between the vertical square tubes (P), which is installed horizontally at the upper and lower sides of the vertical square tubes (P) respectively to integrally connect the vertical square tubes (P) and form the plurality of horizontal flow paths, thereby forming the vertical flow path section (11) and the horizontal flow path section (H). That is, the first heat exchanger (100) has the vertical flow path section (V) and the horizontal flow path section (H) formed by the vertical square tubes (P) and the horizontal board (B). The first heat exchanger (100) is composed of a plate heat exchanger (PHE) as illustrated by the vertical square tubes (P) and the horizontal board (B).

[0038] As illustrated in FIGS. 3 and 6, the first heat exchanger (100) allows the high-temperature exhaust gas, which is discharged at a high temperature from an unillustrated industrial facility, to pass through the vertical flow path (V) in a vertical state, and the low-temperature exhaust gas, which is a secondary temperature-reducing exhaust gas described later, to pass through the horizontal flow path (H) in a horizontal state. That is, as illustrated, the high-temperature exhaust gas and the low-temperature exhaust gas pass through the first heat exchanger (100) on one side and the other side. At this time, as illustrated, the first heat exchanger (100) performs heat exchange in a state where the mixing of the high-temperature exhaust gas and the low-temperature exhaust gas is prevented by the vertical square pipe (P) and the horizontal board (B). Accordingly, the first heat exchanger (100) first reduces the temperature of the high-temperature exhaust gas through the low-temperature exhaust gas.

[0039] As shown in FIG. 1, the first heat exchanger (100) is integrally connected to the bypass duct (200) described later, thereby providing the primary reduced-temperature exhaust gas of the high-temperature exhaust gas to the bypass duct (200). As shown, the bypass duct (200) is connected to the first collection chamber (300) described later, thereby bypassing the primary reduced-temperature exhaust gas provided from the first heat exchanger (100) to the first collection chamber (300).

[0040] The first collection chamber (300) may be configured as a booth-type chamber, for example, as shown in FIG. 1. The first collection chamber (300) collects primary temperature-reducing exhaust gas guided through the bypass duct (200) and then supplies it to the second heat exchanger (500) described later, which is built into the external air supply unit (400) described later. As shown in the figure, the first collection chamber (300) is connected to the second heat exchanger (500) built into the external air supply unit (400), and an access door (310) that opens and closes the internal space is installed. The interior of the first collection chamber (300) can be inspected through the access door (310), and work such as inspection, repair, and replacement of the second heat exchanger (500) is also possible.

[0041] As shown in FIG. 1, the above-mentioned external air supply unit (400) supplies external air to the interior so that the primary temperature-reducing exhaust gas in the built-in second heat exchanger (500) is secondarily reduced in temperature. That is, the above-mentioned external air supply unit (400) supplies external air for reducing the temperature of the primary temperature-reducing exhaust gas supplied from the first collection chamber (300).

[0042] The above-mentioned outside air supply unit (400) may be composed of an outside air pipe body (410) and an outside air fan (420), for example, as shown in FIG. 1. As shown, the outside air pipe body (410) is composed of a hollow tube connected in a multi-stage manner, providing a vertical supply pipe with open upper and lower ends. As shown, the outside air pipe body (410) has the second heat exchanger (500), which will be described later, built inside. As shown, the outside air fan (420) is installed at one end (upper end) of the outside air pipe body (410) and draws outside air into the interior of the outside air pipe body (410). Thus, the outside air supply unit (400) forcibly supplies outside air to the second heat exchanger (500).

[0043] The second heat exchanger (500) non-contactually heat-exchanges the outside air supplied from the aforementioned outside air supply unit (400) and the primary temperature-reducing exhaust gas supplied from the aforementioned first collection chamber (300) to provide secondary temperature-reducing exhaust gas with a second temperature reduced. As shown in FIGS. 4 and 5, the second heat exchanger (500) is configured similarly to the aforementioned first heat exchanger (100), and is equipped with the vertical flow path (V) and the horizontal flow path (H) formed by the vertical square tube (P) and the horizontal board (B).

[0044] As illustrated in FIGS. 1 and 6, the outside air from the outside air supply unit (400) passes through the vertical flow path (V) of the second heat exchanger (500), and the primary temperature-reducing exhaust gas supplied through the first collection chamber (300) passes through the horizontal flow path (H). As illustrated, the second heat exchanger (500) performs heat exchange in a state where the mixing of the outside air and the primary temperature-reducing exhaust gas is prevented by the vertical angle pipe (P) and the horizontal board (B). Accordingly, the second heat exchanger (500) secondarily reduces the temperature of the primary temperature-reducing exhaust gas through the outside air. At this time, the second heat exchanger (500) raises and lowers the temperature and humidity of the first temperature-reducing exhaust gas through heat exchange in the same manner as in the past, so that the second temperature-reducing exhaust gas is adsorbed and condensed in the magic filter member (610) of the filter chamber (600) described later in the same manner as in the past, thereby removing white smoke and fine dust particles, and then provides it to the filter chamber (600) described later, which is integrally connected as illustrated. For reference, the configuration of the magic filter member (610) of the filter chamber (600), and the technology for removing white smoke and fine dust by adsorbing and condensing it by the magic filter member (610) are almost identical to the past, so they are briefly explained as follows.

[0045] As shown in FIG. 1, the filter chamber (600) has a magic filter member (610) having a demister filter (611) and a condensation filter (612) embedded therein. The demister filter (611) is configured to adsorb and remove contaminants such as white smoke, fine dust particles, odors, and moisture from the white smoke secondary temperature-reducing exhaust gas flowing through the inside of the filter chamber (600) as in the prior art, and includes a square frame structure installed as a detachable structure inside the filter chamber (600), a mesh that covers the front and back of the square frame structure and allows the secondary temperature-reducing exhaust gas to penetrate the front and back of the frame, and a porous filter structure filled in the hollow of the frame provided through the frame and mesh, which adsorbs and removes white smoke, fine dust particles, or contaminants from the secondary temperature-reducing exhaust gas penetrating the mesh.

[0046] The above condensation filter (612) is a means for adsorbing and removing white smoke and fine dust from secondary temperature-reducing exhaust gas through condensation or condensation of the white smoke-reducing secondary temperature-reducing exhaust gas as in the past, and includes a square frame structure installed in a detachable structure inside the filter chamber (600), a perforated plate that covers the front and back of the square frame structure and allows the secondary temperature-reducing exhaust gas to penetrate the front and back of the frame through a plurality of holes, and a filter that allows the secondary temperature-reducing exhaust gas to be filled in the hollow of the frame provided through the frame and the perforated plate and penetrated through the perforated plate to condense or condense, thereby adsorbing and removing white smoke and fine dust particles.

[0047] The filter chamber (600) removes pollutants caused by white smoke and fine dust mixed in the secondary temperature-reducing exhaust gas by adsorbing them to the aforementioned demister filter (611) as in the conventional method, and then removes the pollutants again by condensing them in the aforementioned condensation filter (612). The filter chamber (600) supplies the secondary temperature-reducing exhaust gas, from which pollutants have been removed in two stages, to the aforementioned first heat exchanger (100) connected in a connected state as shown in FIGS. 1 and FIGS. 6. That is, the filter chamber (600) supplies the secondary temperature-reducing exhaust gas corresponding to the low-temperature exhaust gas of the first heat exchanger (100) to the first heat exchanger (100). Accordingly, the first heat exchanger (100) provides a first temperature-reducing exhaust gas by exchanging heat between the low-temperature exhaust gas and the high-temperature exhaust gas through the second temperature-reducing exhaust gas.

[0048] The filter chamber (600) drains the condensation that accumulates from the condensation filter (612) through a lower drain that is not shown. If an access door (630) that opens and closes the internal space is installed in the filter chamber (600) as shown in FIG. 1, the interior is inspected through the access door (630). Therefore, the filter chamber (600) can inspect, repair, or replace the magic filter member (610) or the condensation filter (612) through the access door (630).

[0049] Here, as shown in FIG. 1, the first heat exchanger (100) described above supplies the second temperature-reduced exhaust gas, which has been heat-exchanged with the high-temperature exhaust gas, to the second collection chamber (700) as the second collection chamber (700) is integrally connected to the first heat exchanger (100). Accordingly, the second collection chamber (700) collects the second temperature-reduced exhaust gas that has been heat-exchanged in the first heat exchanger (100) after being purified in the filter chamber (600). The second collection chamber (700) is configured almost identically to the first collection chamber (300) described above, as shown. As shown, the second collection chamber (700) is equipped with an access door (710), and the interior is inspected through the access door (710). The above second collection chamber (700) allows for work such as inspection, repair, and replacement of the first heat exchanger (100) to be performed through the access door (710).

[0050] As shown in FIG. 1, the second collection chamber (700) is integrally connected to the emitter (800), so that the collected secondary temperature-reducing exhaust gas is supplied to the emitter (800). The emitter (800) releases the secondary temperature-reducing exhaust gas collected in the second collection chamber (700).

[0051] The above-described emitter (800) includes, for example, an exhaust pipe (810) connected in communication with the second collection chamber (700) as shown in FIG. 1, and an exhaust fan (820) installed in the exhaust pipe (810). The exhaust pipe (810) guides the secondary temperature-reducing exhaust gas collected in the second collection chamber (700) to the outside and exhausts it. The exhaust fan (820) provides negative pressure to the second collection chamber (700) for exhausting the secondary temperature-reducing exhaust gas. As illustrated, the exhaust fan (820) provides negative pressure to these components as the second collection chamber (700) is connected in a communication state with the supply duct (150), the first heat exchanger (100), the bypass duct (200), the first collection chamber (300), the second heat exchanger (500), and the filter chamber (600). Accordingly, the supply duct (150) draws in the high-temperature exhaust gas with this negative pressure and supplies it to the vertical flow path (V) of the first heat exchanger (100). Then, the bypass duct (200) supplies the primary temperature-reduced exhaust gas resulting from the heat exchange of the first heat exchanger (100) with negative pressure to the first collection chamber (300) and supplies it to the horizontal flow path (H) of the second heat exchanger (500). Additionally, the filter chamber (600) passes the secondary temperature-reducing exhaust gas, which has been heat-exchanged in the second heat exchanger (500) by negative pressure, to the second collection chamber (700) and then discharges it through the exhaust pipe (810).

[0052] In the embodiment of the present invention configured as described above, for removing white smoke and fine dust, the exhaust fan (820) provided in the exhaust pipe (810) of the aforementioned emitter (800) and the outside air fan (420) provided in the outside air pipe body (410) of the outside air supply unit (400) are operated. As illustrated, the exhaust fan (820) provides negative pressure through the second collection chamber (700) connected to the exhaust pipe (810). As illustrated, the outside air fan (420) supplies outside air to the second heat exchanger (500) built into the outside air pipe body (410), and as illustrated in FIG. 6, supplies outside air to the vertical flow path (V).

[0053] As shown in FIG. 1, the above supply duct (150) draws in the high-temperature exhaust gas discharged at a high temperature from an unillustrated industrial facility as indicated by the arrow, as negative pressure is applied through communication with the second collection chamber (700), and supplies it to the bypass duct (200) through the first heat exchanger (100) inside. The bypass duct (200) supplies the high-temperature exhaust gas to the first collection chamber (300) as indicated by the arrow, and supplies it to the filter chamber (600) through the second heat exchanger (500) built into the external pipe body (410) of the external air supply unit (400). At this time, the high-temperature exhaust gas is supplied to the horizontal flow path (H) of the second heat exchanger (500) as shown in FIG. 6. Accordingly, the second heat exchanger (500) exchanges heat in a non-contact or non-mixing manner through the outside air supplied to the vertical flow path (V) as illustrated, thereby reducing the temperature of the high-temperature exhaust gas and then providing it to the filter chamber (600).

[0054] As illustrated in FIGS. 1 and 6, the filter chamber (600) passes the high-temperature exhaust gas cooled in the second heat exchanger (500) through the magic filter member (610) and the condensation filter (612) to remove pollutants such as white smoke and fine dust. As illustrated, the filter chamber (600) supplies the high-temperature exhaust gas from which pollutants have been removed to the horizontal flow path (H) of the first heat exchanger (100) embedded in the vertical hollow tube type supply duct (150).

[0055] Here, the aforementioned supply duct (150), as illustrated in FIGS. 1 and 6, supplies the high-temperature exhaust gas drawn from the industrial facility by the aforementioned negative pressure to the vertical flow path (V) of the first heat exchanger (100). As illustrated, the first heat exchanger (100) heats the high-temperature exhaust gas in the vertical flow path (V) in a non-contact or non-mixing manner by means of the cooled-temperature exhaust gas supplied to the horizontal flow path (H) through the aforementioned filter chamber (600), i.e., the low-temperature exhaust gas which has a relatively lower temperature than the high-temperature exhaust gas. Accordingly, the first heat exchanger (100) primarily cools the high-temperature exhaust gas and provides the primary cooled-temperature exhaust gas to the bypass duct (200).

[0056] The bypass duct (200) supplies the primary temperature-reduced exhaust gas to the horizontal flow path (H) of the second heat exchanger (500) embedded in the external pipe body (410) of the external air supply unit (400) through the first collection chamber (300) in the same process as described above, as illustrated in FIGS. 1 and 6. Accordingly, the second heat exchanger (500) heat-exchanges the primary temperature-reduced exhaust gas supplied to the horizontal flow path (H) in a non-contact or non-mixing manner with the low-temperature external air supplied to the vertical flow path (V) as illustrated, thereby reducing the temperature to a second temperature, and then sequentially supplies the reduced secondary temperature-reduced exhaust gas to the filter chamber (600), the second collection chamber (700), and the discharger (800), and discharges it to the outside through the discharger (800). At this time, the second heat exchanger (500) raises and lowers the temperature and humidity of the primary temperature-reducing exhaust gas through heat exchange so that white smoke and fine dust particles are removed as the primary temperature-reducing exhaust gas condenses in the magic filter member (610) and the condensation filter (612) of the filter chamber (600) as described above, and provides it to the filter chamber (600). Accordingly, the emitter (800) exhausts the exhaust gas in a purified state as pollutants such as white smoke and fine dust are removed in the filter chamber (600). In particular, the emitter (800) exhausts the purified exhaust gas that is not mixed with outside air.

[0057] In the embodiment of the present invention as described above, since the outside air and exhaust gas are heat exchanged in a non-contact or non-mixing manner in the second heat exchanger (500), the outside air can be prevented from being mixed with the exhaust gas and discharged. Additionally, since the high-temperature exhaust gas is heat exchanged through a secondary reduced-temperature exhaust gas with a relatively lower temperature than the high-temperature exhaust gas discharged from the second heat exchanger (500) and the high-temperature exhaust gas is primarily reduced, waste heat can be recycled. Furthermore, since most of the components are connected in a line, the negative pressure of the exhaust fan (820) provided in the discharger (800) can be easily provided to almost all of the components.

[0058] In particular, since the above bypass duct (200) can supply high-temperature exhaust gas by bypassing it to components connected in a row, high-temperature exhaust gas flowing into the front end of the system can be easily supplied to the rear end of the system.

[0059] In addition, since the first heat exchanger (100) and the second heat exchanger (500) are composed of the vertical flow path (V) and the horizontal flow path (H) that alternately orthogonal to each other by separation, heat exchange can be performed while reliably preventing mixing of the fluid flowing through the vertical flow path (V) and the horizontal flow path (H).

[0060] In addition, the vertical flow path (V) is composed of a plurality of spaced-apart vertical square tubes (P), and the horizontal flow path (H) is composed of a horizontal board (B) that is attached horizontally to the upper and lower sides of the vertical square tubes (P) and integrally connects the spaced-apart vertical square tubes (P), so the vertical flow path (V) and the horizontal flow path (H) can be easily manufactured in an alternating state.

[0061] Meanwhile, the first heat exchanger (100) described above must be embedded in the supply air duct (150), which is composed of a vertical hollow intake pipe as shown in FIG. 1, so during installation, the outer side is fixed by welding or bolting while lifted by a hoist. At this time, the first heat exchanger (100) continues to move due to its own weight while being fixed, and since welding or bolting is performed within the narrow space inside the supply air duct (150), the fixing work, i.e., the installation work, is somewhat difficult. The first heat exchanger (100) can be easily embedded in the supply air duct (150) in a detachable state through fasteners described later.

[0062] The above fastener may be configured to include, for example, an outer flange (140), an inner flange (151), and a clamp (160) described later, as illustrated in FIGS. 7 and 8. The outer flange (140) is provided on the outer side of the first heat exchanger (100) as illustrated in FIGS. 7 and 8. It is preferable that the outer flange (140) be provided on the outer side of the lower portion of the first heat exchanger (100) as illustrated. The inner flange (151) is provided inside the supply air duct (150) as illustrated. As illustrated in FIGS. 9 to 11, the outer flange (140) is seated on the inner flange (151) in a stacked state on top of it. The clamp (160) clamps the outer flange (140) seated on the inner flange (151) so as to be detachably clamped to the inner flange (151), thereby fixing the first heat exchanger (100) in an assembled manner inside the air supply duct (150).

[0063] The clamp (160) comprises, for example, a rail (141), a guide (152), a bracket (161), a lead screw (162), a head (163), a nut member (164), and a hook (165), as illustrated in FIGS. 7 to 9. The rail (141) is formed in an elongated shape on the outer flange (140) as illustrated. The guide (152) is formed on the inner flange (151) as illustrated, and is formed in an elongated shape corresponding to the rail (141). The bracket (161) has a cross-section such as an 'Ω' with a ring or bearing so that both ends of the lead screw (162), described later, are fitted into it, as illustrated, and is integrally provided with the air supply duct (150).

[0064] As shown in FIGS. 7 to 9, the lead screw (162) is fixed by having both ends inserted into the bracket (161) so as to be pivotally rotatable, and the male screws are symmetrically formed in opposite directions along the axial direction. As shown, the head (163) is integrally provided with the lead screw (162) and rotates together with the lead screw (162). As shown, the nut members (164) are composed of multiple parts and fastened to both sides of the lead screw (162). As shown, the nut members (164) are each screw-coupled to the respective male screws symmetrically formed on the lead screw (162).

[0065] The nut members (164) each move along the symmetrically formed male screws as shown in FIGS. 9 and FIGS. 13. The hooks (165) are configured in multiple numbers to be integrally provided with the nut members (164) as shown, and move along the guide (152) and the rail (141) by the movement of the nut members (164). As shown, the hooks (165) are hooked at the end of the rail (141), and when movement is completed, they are hooked on the end side of the rail (141).

[0066] In another embodiment of the present invention configured as described above, as shown in FIGS. 10 and 11, the first heat exchanger (100) is embedded inside the supply duct (150), and the outer flange (140) of the first heat exchanger (100) is seated on the inner flange (151) of the supply duct (150). Accordingly, the first heat exchanger (100) is easily installed inside the supply duct (150).

[0067] As illustrated in FIGS. 12 and 13, the first heat exchanger (100) is detachably fixed inside the supply duct (150) by the clamp (160) of the fastener. The clamp (160) pivots together with the head (163) of the lead screw (162) while fixed to the bracket (161) as the head (163) of the lead screw (162) is rotated by a tool such as a wrench. At this time, the nut member (164) moves in an opposite state along the male screws symmetrically formed on the lead screw (162), thereby moving the hook (165) which is integrally fixed. As illustrated, the hook (165) moves along the rail (141) and the guide (152) of the outer flange (140) and the inner flange (151). And, as illustrated, the hook (165) is hooked onto the end side of the rail (141). Accordingly, the hook (165) restrains the outer flange (140) of the first heat exchanger (100) to the upper part of the inner flange (151) provided in the supply air duct (150). Thus, the first heat exchanger (100) is securely fixed in a detachable state inside the supply air duct (150).

[0068] In another embodiment of the present invention as described above, the outer flange (140) is provided on the inner flange (151) of the first heat exchanger (100) or the second heat exchanger (500), and the first heat exchanger (100) or the second heat exchanger (500) is fixed inside the supply duct (150) by means of the fastener rather than by welding, so that the first heat exchanger (100) can be temporarily fixed inside the supply duct (150) through the outer flange (140) and then fixed, separated, or replaced by means of the fastener, and since the outer flange (140) is seated on and caught on the inner flange (151), the first heat exchanger (100) or the second heat exchanger (500) is stably embedded in the supply duct (150) or the outer pipe body (410).

[0069] And, by the lead screw (162) of the clamp (160), the hook (165) moves and catches on the end side of the rail (141), thereby restraining the outer flange (140) to the inner flange (151), so that the first heat exchanger (100) can be easily fixed to or released from the supply duct (150).

[0070] Meanwhile, as shown in FIG. 14, the first collection chamber (300) may be equipped with a radiator (320) on its side. The radiator (320) dissipates heat from the aforementioned primary cooling exhaust gas collected in the first collection chamber (300) and supplied to the second heat exchanger (500). Accordingly, the first collection chamber (300) can pre-cool the primary cooling exhaust gas supplied to the second heat exchanger (500) through the radiator (320) and supply it to the second heat exchanger (500). The radiator (320) may be configured to include, for example, a mounting plate (321), a heat absorption fin (323), and a heat dissipation fin (324) as shown.

[0071] As shown in FIG. 14, the above-mentioned mounting plate (321) is integrally installed in the first collection chamber (300) by welding or bolting. As shown in the figure, the heat absorption fin (323) is provided on one side of the mounting plate (321) and protrudes into the first collection chamber (300), and absorbs heat from the first temperature-reducing exhaust gas by exchanging heat in an air-cooling manner with the first temperature-reducing exhaust gas that is collected and flowing through the first collection chamber (300) by negative pressure. As shown in the figure, the heat dissipation fin (324) is provided on the other side of the mounting plate (321) and protrudes outward from the first collection chamber (300) so that the heat absorbed by the heat absorption fin (323) is dissipated.

[0072] As shown in FIG. 14, the above radiator (320) is integrally provided on the mounting plate (321) and protrudes into the interior of the first collection chamber (300), and divides the primary temperature-reducing exhaust gas flowing through the first collection chamber (300) to reduce the noise of the primary temperature-reducing exhaust gas caused by the flow attenuation It further includes a noise damping unit (322). The noise damping unit (322) dampens the "shhh" noise of the aforementioned primary temperature-reducing exhaust gas that is collected in the first collection chamber (300) and flows through the first collection chamber (300) by the negative pressure of the exhaust fan (820) provided in the exhaust pipe (810) of the emitter (800).

[0073] The noise damping section (322) may be composed of a plurality of holes through which the primary temperature-reducing exhaust gas flowing through the first collection chamber (300) is dispersed and passes, for example, as shown in FIG. 14. As shown, the noise damping section (322) may be formed in a honeycomb shape by a plurality of holes, and the plurality of holes are formed long in a direction corresponding to the movement path of the primary temperature-reducing exhaust gas. That is, the plurality of holes are parallel to the direction of movement of the primary temperature-reducing exhaust gas. Accordingly, the primary temperature-reducing exhaust gas passes through the plurality of holes of the noise damping section (322).

[0074] In another embodiment of the present invention configured as described above, the primary temperature-reducing exhaust gas collected and flowing through the first collection chamber (300) comes into contact with the heat-absorbing fin (323) protruding into the interior of the first collection chamber (300) as illustrated. At this time, the heat-absorbing fin (323) absorbs the heat of the primary temperature-reducing exhaust gas and transfers it to the heat-dissipating fin (324) through the mounting plate (321). Accordingly, the heat-dissipating fin (324) dissipates the absorbed heat to the outside while in contact with the outside air. Therefore, as the heat of the primary temperature-reducing exhaust gas is dissipated, the first collection chamber (300) is pre-cooled by air cooling and supplied to the second heat exchanger (500).

[0075] And, the primary temperature-reducing exhaust gas passes through a plurality of holes in the aforementioned noise damping unit (322). At this time, the noise damping unit (322) dampens the noise as the primary temperature-reducing exhaust gas of the first collection chamber (300) is dispersed and divided by the plurality of holes. Accordingly, the noise damping unit (322) reduces the "shhh" noise generated in the first collection chamber (300).

[0076] Here, as shown in FIG. 14, the aforementioned radiator (320) is configured such that the mounting plate (321) is larger than the noise damping part (322). As shown, the mounting plate (321) of the radiator (320) is fixed to the outside of the first collection chamber (300) by bolting or welding. As shown in FIG. 15, a packing (325) may be installed along the edge of the mounting plate (321) or the noise damping part (322) of the radiator (320). This packing (325) seals the contact surface (inner side) of the mounting plate (321), which is in close contact with the surface of the first collection chamber (300), in an airtight state to prevent leakage of exhaust gas and to prevent leakage of noise.

[0077] Those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive, and the scope of the present invention is defined by the claims set forth below rather than by the detailed description, and all modifications or variations derived from the meaning and scope of the claims and equivalents thereof should be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0078] 100: First heat exchanger 140: Outer flange 141: Rail 150: Supply duct 151: Inner flange 152: Guide 160: Clamp 161; Bracket 162: Lead screw 163: Head 164: Nut member 165: Hook 200: Bypass duct 300: First collection chamber 310, 630, 710: Access doors 320: Radiator 321: Mounting plate 322: Noise damping part 323: Heat absorption fin 324: Heat dissipation fin 325: Packing 400: Outdoor air supply 410: Outdoor duct 420: Outdoor fan 500: Second heat exchanger 600: Filter chamber 610: Magic Filter Absence 611: Demister Filter 612: Condensation filter 700: Second collection chamber 800: Discharger 810: Exhaust pipe 820: Exhaust fan B: Horizontal board H: Horizontal channel section P: Vertical angle pipe V: Vertical flow section

Claims

Claim 1 A supply air duct (150) that sucks in and supplies high-temperature exhaust gas by negative pressure; a first heat exchanger (100) in which high-temperature exhaust gas from the supply air duct (150) flows in to one side and low-temperature exhaust gas, which has been pretreated to a temperature relatively lower than that of the high-temperature exhaust gas, flows in to the other side, and in which heat exchange is performed non-contactually between the high-temperature exhaust gas and the low-temperature exhaust gas so as to prevent mixing of the high-temperature exhaust gas and the low-temperature exhaust gas, thereby primarily cooling the high-temperature exhaust gas through the low temperature of the low-temperature exhaust gas to provide primary cooled exhaust gas; a bypass duct (200) that bypasses the primary cooled exhaust gas primarily cooled in the first heat exchanger (100); a first collection chamber (300) that collects and supplies the primary cooled exhaust gas guided through the bypass duct (200); and the primary cooled exhaust gas supplied through the first collection chamber (300). An outside air supply unit (400) that supplies outside air for secondary temperature reduction of exhaust gas; a second heat exchanger (500) that provides secondary temperature reduction exhaust gas that is secondarily reduced by non-contact heat exchange between the outside air supplied from the outside air supply unit (400) and the primary temperature reduction exhaust gas supplied from the first collection chamber (300); a filter chamber (600) that removes pollutants consisting of white smoke and fine dust from the secondary temperature reduction exhaust gas provided from the second heat exchanger (500) and supplies the secondary temperature reduction exhaust gas with purified pollutants to the first heat exchanger (100) so that the secondary temperature reduction exhaust gas with purified pollutants is used as the pretreated low-temperature exhaust gas of the first heat exchanger (100); and the secondary temperature reduction that is purified in the filter chamber (600) and supplied to the first heat exchanger (100) for heat exchange with the high-temperature exhaust gas. A second collection chamber (700) for collecting exhaust gas; and a emitter (800) for releasing secondary temperature-reducing exhaust gas collected in the second collection chamber (700) by providing negative pressure through the second collection chamber (700);The air supply duct (150) is characterized by being composed of a vertical hollow tubular body into which the first heat exchanger (100) is inserted, and further includes a fastener for detachably fixing the first heat exchanger (100) to the air supply duct (150); wherein the fastener comprises an outer flange (140) provided on the outside of the first heat exchanger (100); and an inner flange (151) provided inside the air supply duct (150) so that the outer flange (140) is seated in a stacked state. The clamp (160) includes the outer flange (140) seated on the inner flange (151) and the clamp (160) which detachably clamps the outer flange (140) to the inner flange (151) to fix the first heat exchanger (100) in an assembled manner inside the supply duct (150); the clamp (160) comprises: a rail (141) of an elongated hole formed in the outer flange (140); a guide (152) of an elongated hole formed in the inner flange (151) to correspond to the rail (141); a plurality of brackets (161) provided in the supply duct (150); a lead screw (162) having both ends rotatably fixed to the brackets (161) and having male screws symmetrically formed in opposite states; a head (163) integrally provided with the lead screw (162) and rotating together with the lead screw (162); and on both sides of the lead screw (162). A white smoke and fine dust removal device comprising: a plurality of nut members (164) that are connected and screw-coupled to male screws symmetrically formed on the lead screw (162) and move independently along the symmetrically formed male screws; and a hook (165) integrally provided on the nut members (164), which moves along the guide (152) and the rail (141) by the movement of the nut members (164) and engages with the end side of the rail (141). Claim 2 A white smoke and fine dust removal device according to claim 1, wherein the first heat exchanger (100) comprises: a vertical flow path section (V) in which vertical flow paths are spaced apart so that the high-temperature exhaust gas supplied to the supply air duct (150) flows in a vertical state; and a horizontal flow path section (H) in which horizontal flow paths are spaced apart so that the low-temperature exhaust gas to be heat-exchanged with the high-temperature exhaust gas flows in a horizontal state, formed between the vertical flow paths in a state orthogonal to the vertical flow path of the vertical flow path section (V). Claim 3 A white smoke and fine dust removal device according to claim 1, wherein the second heat exchanger (500) comprises: a vertical flow path section (V) in which vertical flow paths are spaced apart so that outside air supplied from the outside air supply unit (400) flows in a vertical state; and a horizontal flow path section (H) in which horizontal flow paths are spaced apart so that primary temperature-reducing exhaust gas of the first collection chamber (300) flows in a horizontal state to exchange heat with the outside air of the vertical flow path section (V) is formed between the vertical flow paths in a state orthogonal to the vertical flow path of the vertical flow path section (V). Claim 4 delete Claim 5 delete Claim 6 A white smoke and fine dust removal device according to claim 1, further comprising: a radiator (320) for dissipating heat from primary temperature-reducing exhaust gas collected in the first collection chamber (300); wherein the radiator (320) comprises: a mounting plate (321) integrally installed in the first collection chamber (300); a heat absorption fin (323) provided on one side of the mounting plate (321) and protruding into the first collection chamber (300), and absorbing heat while exchanging heat in an air-cooling manner with the primary temperature-reducing exhaust gas collected in the first collection chamber (300) and flowing through it due to negative pressure; and a heat dissipation fin (324) provided on the other side of the mounting plate (321) and protruding outward from the first collection chamber (300) so as to dissipate heat absorbed by the heat absorption fin (323).

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