CN211876854U - Heat exchanger cleaning system - Google Patents

Heat exchanger cleaning system Download PDF

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Publication number
CN211876854U
CN211876854U CN201990000236.1U CN201990000236U CN211876854U CN 211876854 U CN211876854 U CN 211876854U CN 201990000236 U CN201990000236 U CN 201990000236U CN 211876854 U CN211876854 U CN 211876854U
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CN
China
Prior art keywords
rotating body
target rotating
heat exchanger
substance
target
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Active
Application number
CN201990000236.1U
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Chinese (zh)
Inventor
洪性镐
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Geesco
Geesco Ltd
GEESCO CO Ltd
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Geesco Ltd
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Priority claimed from KR1020190090749A external-priority patent/KR20210012652A/en
Application filed by Geesco Ltd filed Critical Geesco Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
    • F28D19/041—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier with axial flow through the intermediate heat-transfer medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
    • F28G1/163—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from internal surfaces of heat exchange conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G15/00—Details
    • F28G15/003—Control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
    • F28G9/005—Cleaning by flushing or washing, e.g. with chemical solvents of regenerative heat exchanger

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Incineration Of Waste (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A heat exchanger cleaning system comprising: rotating the target rotating body around a virtual rotation axis extending in one direction; a first inlet located on the target rotating body and into which the first gas flows; and a first ash blower positioned in the first inlet inner space and including a first injection port injecting a first substance and a second injection port injecting a second substance, wherein a first distance separating the first injection port and the rotation axis is substantially the same as a second distance separating the second injection port and the rotation axis.

Description

Heat exchanger cleaning system
Technical Field
The present invention relates to a heat exchanger cleaning system, and more particularly, to a heat exchanger cleaning system in which a cleaning efficiency of a target rotating body, which is a component of a heat exchanger, is improved.
Background
Nitrogen Oxides (NO) are contained in exhaust gas discharged from an internal combustion engine such as a boilerx) And this nitrogen oxide can cause pollution and therefore needs to be removed before being released into the atmosphere. As one method for removing nitrogen oxides contained in exhaust gas, a Selective Catalytic Reduction (SCR) method is mainly used. On the one hand, if the exhaust gas passes through the SCR device, the concentration of sulfur trioxide in the exhaust gas increases, and ammonia (NH) gas for catalytic reaction of the SCR device3) With sulfur trioxide and moisture (H) contained in the exhaust gas2O) to form ammonium bisulfate (NH)4HSO4(ii) a ammonium hydrogen sulfate), also known as ammonium bisulfate (ammonium bisulfate). If a heat exchanger (gah air heater) or ggh (gas gas heater) installed at the rear end of the SCR apparatus is continuously operated for a long time, there are the following problems: foreign matter containing ammonia hydrogen sulfate accumulates inside the heat exchanger, thereby reducing ventilation inside the heat exchanger.
In order to solve such a problem, a heat exchanger cleaning device (sootblower) may be installed at an upper portion and/or a lower portion of the heat exchanger to remove foreign substances accumulated inside the heat exchanger.
In the conventional art, a method of removing foreign substances by injecting high-temperature steam or high-pressure water to the inside of a heat exchanger is used, but in the case of injecting high-pressure water, there is a problem in that the performance and life of a device (for example, a dust collector) installed at the rear end of the heat exchanger are lowered due to the high concentration of moisture in the exhaust gas, and thus it is necessary to additionally provide a device for recovering a large amount of wastewater generated thereby.
Korean registered patent No. 101555227 (patent document 1) discloses a dry cleaning method using dry ice particles, instead of the conventional method of spraying high-pressure water. This method is effective in the case where only ammonium bisulfate is present as a foreign substance, but the following problems still remain: when the fuel quality is degraded, it is difficult to remove foreign substances formed by a combination of various components, and particularly in the case where the foreign substances are frozen due to a very low temperature of the atmosphere, the foreign substances cannot be effectively removed only by the above-described dry cleaning method.
Korean registered patent No. 101387024 (patent document 2) discloses a method of removing foreign substances from the inside of a heat exchanger by spraying high-temperature steam and dry ice particles to the inside of the heat exchanger. According to the method, high-temperature steam and dry ice particles are sprayed from a cleaning device arranged on the inlet side of the heat exchanger in the flow direction of the supply air and/or the exhaust gas. However, since the temperature at the inlet of the heat exchanger into which the exhaust gas flows is high, the sublimation rate of the dry ice particles may be increased, and thus the cleaning effect may be deteriorated instead. In the case where high-temperature steam injected from a cleaning device disposed at an inlet of a heat exchanger into which supply gas flows into the interior of a boiler, damage to the boiler may be caused, and thus thermal efficiency of the boiler may be reduced. In addition, even if high-temperature steam and dry ice particles are sprayed, there is a problem in that the cleaning effect at a specific target position may be reduced because the target is rotating and the cleaner is also moving.
(patent document 1) KR10-1555227B
(patent document 2) KR10-1387024B
SUMMERY OF THE UTILITY MODEL
Solves the technical problem
An object of the present application relates to a heat exchanger cleaning system in which the cleaning efficiency of a target rotating body as one constituent member of a heat exchanger is improved.
Solving means
The heat exchanger washing system according to an embodiment of the present application may include a target rotating body, a first inlet, a first outlet, a second inlet, a second outlet, and a first soot blower, wherein: the target rotating body rotates around a virtual rotation axis extending in one direction; a first inlet positioned at an upper portion of the target rotating body; a first outlet is positioned opposite to the first inlet at a lower portion of the target rotating body; a second inlet positioned spaced from said first outlet at a lower portion of said target rotating body; a second outlet is positioned opposite to the second inlet at an upper portion of the target rotating body; a first sootblower is positioned within the first inlet interior space.
The first inlet may be a passage through which the first gas flows toward the target rotating body. The first outlet may be a passage through which the first gas passing through the target rotating body is discharged. The second inlet may be a passage through which a second gas having a lower temperature than the first gas flows toward the target rotating body. The second outlet may be a passage through which the second gas passing through the target rotating body is discharged.
The first sootblower may include a first injection port injecting a first substance toward the target rotating body and a second injection port injecting a second substance toward the target rotating body. The second injection port may be positioned to be spaced apart from the first injection port by a certain interval.
A first distance separating the first ejection port and the virtual rotation axis of the target rotating body may be substantially the same as a second distance separating the second ejection port and the virtual rotation axis of the target rotating body.
The first ejection port and the second ejection port may be respectively positioned on a circumference of one concentric circle of the target rotating body and positioned to respectively face each of a plurality of target positions positioned spaced apart from each other.
The first substance and the second substance may be sequentially ejected to a target position of the target rotating body as the target rotating body rotates about the virtual rotation axis.
The first substance may be high temperature steam, and the second substance may be dry ice particles.
The first sootblower may be positioned adjacent the second outlet.
The heat exchanger cleaning system according to an embodiment of the present application may further include a second sootblower positioned in the first outlet interior space.
The second sootblower may include a third injection port that injects the first substance toward the target rotating body and a fourth injection port that injects the second substance toward the target rotating body. The fourth injection ports may be positioned at intervals from the third injection ports.
A third distance separating the third ejection port and the virtual rotation axis of the target rotation body may be substantially the same as a fourth distance separating the fourth ejection port and the virtual rotation axis of the target rotation body.
The third ejection ports and the fourth ejection ports may be respectively positioned on a circumference of one concentric circle of the target rotating body and positioned to respectively face each of a plurality of target positions positioned spaced apart from each other.
The second sootblower may be positioned adjacent the second inlet.
The heat exchanger cleaning system according to an embodiment of the present application may further include a driving part adjusting positions of the first sootblower and the second sootblower.
The driving unit may move the first and second sootblowers away from or close to the virtual rotation axis of the target rotating body. The driving part may adjust a distance of an interval between the first injection ports and the second injection ports such that the first sootblowers are arranged such that the first distance and the second distance are substantially the same as each other. The driving part may adjust a distance of an interval between the third injection ports and the fourth injection ports such that the second sootblowers are arranged such that the third distance and the fourth distance are substantially the same as each other.
The first substance and the second substance may be continuously ejected at the same time during the rotation of the target rotating body.
Advantageous effects
The heat exchanger cleaning system according to one embodiment of the present application may effectively remove foreign substances from the target rotating body as high-temperature steam and dry ice particles are sprayed to the same location of the target rotating body.
Drawings
FIG. 1 is a schematic perspective view of a heat exchanger washing system according to one embodiment of the present application.
FIG. 2 is a perspective view of a portion of a heat exchanger washing system according to one embodiment of the present application.
FIG. 3 is a top view of a portion of a heat exchanger washing system according to an embodiment of the present application.
FIG. 4 is a bottom view of a portion of a heat exchanger washing system according to an embodiment of the present application.
Fig. 5 and 6 are perspective views of a portion of a heat exchanger washing system according to an embodiment of the present application.
Fig. 7 and 8 are top views, respectively, of a portion of a heat exchanger washing system according to an embodiment of the present application.
Fig. 9 and 10 are bottom views, respectively, of a portion of a heat exchanger washing system according to an embodiment of the present application.
Best mode for carrying out the invention
While the present application is susceptible to various modifications and alternative forms, specific embodiments have been shown in the drawings and will be described herein in detail. However, it is not intended to limit the present application to the particular forms disclosed, and it is to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the present application.
In the present application, terms such as "including" or "having" and the like should be understood to be intended to specify the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. In addition, in the case where a certain member (or portion) is "on" (or "upper") another member (or portion), it includes not only the case where "directly" on "the other member (or portion), but also the case where another member (or portion) exists in the middle. Likewise, in the case where a certain member (or portion) is "under" (or "lower") another member (or portion), it includes not only the case where "directly" under "the other member (or portion), but also the case where another member (or portion) is present in the middle. In addition, the above-mentioned "upper" (or "upper") and "lower" (or "lower") refer to positions when the heat exchanger in a horizontal state is viewed from the side (which may be called front view or rear view depending on the angle of view) (refer to fig. 1 of the present application). Therefore, even if the heat exchanger is tilted or turned over according to the use state of the heat exchanger, the position of each member (or portion) should be confirmed assuming that the heat exchanger is in an original horizontal state in understanding the present application.
In describing the drawings, like reference numerals are used for like elements. The terms first, second, etc. may be used to describe various components, but these components should not be limited by these terms. These terms are used only for the purpose of distinguishing one constituent element from another constituent element. For example, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component, without departing from the scope of the claims of the present application. Unless the context clearly dictates otherwise, expressions in the singular include expressions in the plural.
Hereinafter, embodiments of the present application will be described in more detail with reference to the accompanying drawings.
Fig. 1 is a schematic perspective view (which may also be referred to as a front view, a side view, or a rear view depending on a viewing angle) of a heat exchanger washing system according to an embodiment of the present application, and fig. 2 is a perspective view regarding a portion of the heat exchanger washing system according to an embodiment of the present application.
First, referring to fig. 1 and 2, a heat exchanger cleaning system according to an embodiment of the present application may include a target rotating body 10, first and second inlets 20 and 23 through which a first gas G1 flows, second and second outlets 30 and 33 through which a second gas G2 flows, a sootblower 100, and a driving part 50.
The target rotating body 10 can rotate around a virtual rotation axis 1 extending in the first direction DR 1. The target rotating body 10 may be, for example, an air preheater or a gas preheater, as a device for exchanging heat between the high-temperature gas and the low-temperature gas passing through the target rotating body 10 while rotating around the virtual rotating shaft 1.
The above-described target rotating body 10 may include an outer frame 11, an inner frame 13, and a heat exchange plate 15.
The outer frame 11 has a predetermined height extending in the first direction DR1, and may be a ring-shaped frame having an inner space intersecting the first direction DR1 and corresponding to a plane formed by the second direction DR2 and the third direction DR3 intersecting each other.
The inner frame 13 may be a frame that divides the inner space of the outer frame 11 in the radial direction and the circumferential direction.
The heat exchange plate 15 may be disposed in an area defined by the outer frame 11 and the inner frame 13. The heat exchanger plate 15 may be a metal plate in a mesh or a corrugated shape.
The first inlet 20 may be positioned at an upper portion of the target rotating body 10. The first inlet 20 may be a passage through which the first gas G1 flows toward the target rotating body 10. Here, the first inlet 20 may be connected to an apparatus (not shown) such as a boiler, and at this time, the first gas G1 may be a high-temperature gas discharged from the inside of the apparatus (not shown), for example, the first gas G1 may be substantially an exhaust gas.
The first outlet 23 may be disposed at a lower portion of the target rotating body 10. The first outlet 23 may be positioned opposite to the first inlet 20 with the target rotating body 10 interposed therebetween. The first outlet 23 may be a passage through which the first gas G1 flowing into the first inlet 20 passes through the target rotating body 10 and is then discharged to the outside. The temperature of the first gas G1 discharged through the first outlet 23 may be lower than the temperature of the first gas G1 flowing in through the first inlet 20.
The second inlet 30 may be positioned at a lower portion of the target rotating body 10. The second inlet 30 may be positioned spaced apart from the first outlet 23. The second inlet 30 may be a passage through which the second gas G2 flows toward the target rotating body 10. Here, the second gas G2 may be, for example, air supplied from the outside as a gas having a lower temperature than the first gas G1.
The second outlet 33 may be positioned at an upper portion of the target rotating body 10. The second outlet 33 may be positioned spaced apart from the first inlet 20. The second outlet 33 may be positioned opposite to the second inlet 30 with the target rotating body 10 interposed therebetween. The second outlet 33 may be a passage through which the second gas G2 flowing in through the second inlet 30 passes through the target rotating body 10 and is then discharged. The temperature of the second gas G2 discharged through the second outlet 33 may be higher than the temperature of the second gas G2 flowing in through the second inlet 30. In addition, the temperature of the second gas G2 discharged through the second outlet 33 may be lower than the temperature of the first gas G1 flowing in through the first inlet 20.
The second outlet 33 may be connected to the apparatus (not shown), and at this time, the second gas G2 may be supplied to the inside of the apparatus (not shown).
The sootblower 100 may be positioned at a region of an upper portion and/or a lower portion of the target rotating body 10 as a means for cleaning the target rotating body 10.
In one embodiment of the present application, the sootblowers 100 described above may include a first sootblower 101 and a second sootblower 102.
The first soot blower 101 may be positioned at a region of an upper portion of the target rotating body 10 and may be disposed in an inner space of the first inlet 20.
The second sootblower 102 may be positioned at a region of a lower portion of the target rotating body 10 and may be disposed at an inner space of the first outlet 23. The second sootblower 102 may be positioned opposite the first sootblower 101.
The above-described first soot blower 101 and the above-described second soot blower 102 are explained in more detail below.
The driving part 50 may adjust the positions of the first and second sootblowers 101 and 102 together/simultaneously or separately. The driving unit 50 may adjust the positions of the first sootblower 101 and the second sootblower 102 to be distant from or close to the virtual rotation axis 1. Here, the first and second sootblowers 101 and 102 may be moved in a direction parallel to a plane formed by the second direction DR2 and the third direction DR3 while maintaining a distance from the target rotating body 10.
Fig. 3 is a top view and fig. 4 is a bottom view of a portion of a heat exchanger washing system according to an embodiment of the present application. Fig. 5 and 6 are perspective views of a portion of a heat exchanger washing system according to an embodiment of the present application. Hereinafter, the above-described first soot blower 101 and the above-described second soot blower 102 are explained in detail with reference to fig. 3 to 6.
First, referring to fig. 3 and 5, the first sootblower 101 may be positioned to overlap the first region R1 of the target rotating body 10. Here, the first region R1 may be a region of the target rotating body 10 where the first inlet 20 is disposed. The first soot blower 101 may remove foreign substances on the upper portion of the target rotating body 10 while the target rotating body 10 is rotated.
The above-described first ash blower 101 may include a first supply part 110 supplying the first substance M1 and a second supply part 120 supplying the second substance M2. In one embodiment of the present application, the first substance M1 may be high-temperature steam, and the second substance M2 may be dry ice particles.
The first supply part 110 may include a first supply path 111 through which the first substance M1 flows and a first injection port 113 through which the first substance M1 is injected. The first injection ports 113 may be positioned to be spaced apart from the virtual rotation axis 1 by about a first distance D1.
The second supply part 120 may include a second supply path 121 through which the second substance M2 flows and a second injection port 123 through which the second substance M2 is injected. The second injection ports 123 may be positioned at intervals from the first injection ports 113. The second injection ports 123 may be positioned to be spaced apart from the virtual rotation axis 1 by about a second distance D2.
In an embodiment of the present application, when the first injection ports 113 and the second injection ports 123 are respectively positioned on planes substantially parallel to a plane formed by the second direction DR2 and the third direction DR3, the first distance D1 and the second distance D2 may be substantially the same. That is, the first injection ports 113 and the second injection ports 123 may be respectively positioned on the circumferences of one concentric circle of the target rotating body 10 and positioned to respectively face each of a plurality of target positions positioned to be spaced apart from each other.
The first substance M1 and the second substance M2 may be continuously ejected at the same time during the rotation of the target rotating body 10. Accordingly, the second substance M2 can sequentially reach the position where the first substance M1 is ejected on one concentric circle of the target rotating body 10.
The first soot blower 101 may be positioned adjacent to a second region R2, and the second region R2 may be a region of the target rotating body 10 where the second outlet 33 is disposed.
In the case where the first gas G1 flows into the first inlet 20 in a high temperature state, the temperature of the inner space of the first inlet 20 may be maintained in a high temperature state similarly to the temperature of the first gas G1. In the case where the first sootblower 101 sprays the first and second substances M1 and M2 in the internal space of the first inlet 20, it may be difficult for the first and second substances M1 and M2 to reach the target rotating body 10 due to the temperature of the internal space of the first inlet 20. Particularly, in the case where the second substance M2 is provided as the dry ice particles, the dry ice particles may be sublimated due to the temperature of the inner space of the first inlet 20 in a high temperature state.
Therefore, the first ash blower 101 may be positioned at a relatively low temperature in the first region R1. That is, the first sootblower 101 may be positioned to be maximally close to the second region R2 also in the first region R1, thereby maximally reducing the amount of sublimation of the dry ice particles.
In fig. 3, it is illustrated and described that the first soot blower 101 is positioned such that the first supply part 110 is closer to the second region R2 than the second supply part 120, but it is not limited thereto, and the first soot blower 101 may be positioned such that the second supply part 120 is closer to the second region R2 than the first supply part 110.
In fig. 3, the first supply unit 110 and the second supply unit 120 are shown as being integrally formed in the first soot blower 101, but the present invention is not limited thereto. The first supply part 110 and the second supply part 120 may be positioned apart from each other and spaced apart from each other by a predetermined interval.
Referring to fig. 4, the second sootblower 102 may be positioned to overlap the third region R3 of the target rotating body 10. Here, the third region R3 may be a region in which the first outlet 23 is disposed in a lower portion of the target rotating body 10. The second sootblower 102 may remove foreign substances from the lower portion of the target rotating body 10 during the rotation of the target rotating body 10.
The above-described second sootblower 102 may include a third supply 130 supplying the first substance M1 and a fourth supply 140 supplying the second substance M2.
The third supply part 130 may include a third supply path 131 through which the first substance M1 flows and a third injection port 133 through which the first substance M1 is injected. The third injection ports 133 may be positioned to be spaced apart from the virtual rotation axis 1 by about a third distance D3.
The fourth supply part 140 may include a fourth supply path 141 through which the second substance M2 flows and a fourth injection port 143 through which the second substance M2 is injected. The fourth injection ports 143 may be positioned at intervals from the third injection ports 133. The fourth injection ports 143 may be positioned to be spaced apart from the virtual rotation axis 1 by about a fourth distance D4.
In an embodiment of the present application, when the third injection ports 133 and the fourth injection ports 143 are respectively positioned on planes substantially parallel to a plane formed by the second direction DR2 and the third direction DR3, the third distance D3 and the fourth distance D4 may be substantially the same. That is, the third injection ports 133 and the fourth injection ports 143 may be respectively positioned on the circumferences of one concentric circle of the target rotating body 10 and positioned to respectively face each of a plurality of target positions positioned to be spaced apart from each other.
The first substance M1 and the second substance M2 may be continuously ejected at the same time during the rotation of the target rotating body 10. Accordingly, the second substance M2 can sequentially reach the position where the first substance M1 is ejected on one concentric circle of the target rotating body 10.
The second sootblower 102 may be positioned adjacent to a fourth region R4, which is a region of the lower portion of the target rotating body 10 where the second inlet 30 is disposed.
The first gas G1 discharged through the first outlet 23 after passing through the target rotating body 10 has a temperature lower than that of the first gas G1 flowing in through the first inlet 20, but may have a temperature higher than that of the second gas G2 flowing in through the second inlet 30.
Therefore, the second sootblower 102 may minimize the amount of sublimation of the dry ice particles as the second substance M2 by being positioned to be maximally close to the fourth region R4 within the third region R3.
Further, the second sootblower 102 may spray a larger amount of the first material M1 and the second material M2 than the first sootblower 101.
Since the first and second substances M1 and M2 are injected in a direction opposite to the direction in which the first gas G1 is discharged through the first outlet 23, the first and second substances M1 and M2 injected from the second sootblower 102 may have difficulty reaching the target rotating body 10.
This can easily remove foreign substances at the lower portion of the target rotating body 10 by increasing the amounts of the first and second substances M1 and M2 injected from the second sootblowers 102.
In fig. 4, the second sootblower 102 is shown and described as being positioned such that the fourth supply section 140 is closer to the fourth region R4 than the third supply section 130, but the present invention is not limited thereto, and the second sootblower 102 may be positioned such that the third supply section 130 is closer to the fourth region R4 than the fourth supply section 140.
In the conventional art, the above-described second sootblower 102 is positioned so as to overlap the above-described fourth region R4, but in this case, the following problems arise: the first material M1 and the second material M2 injected from the second sootblowers 102 flow into the interior of the plant (not shown), thereby degrading plant characteristics. However, an embodiment of the present application may prevent the first and second substances M1 and M2 injected from the second sootblowers 102 from flowing into the interior of the apparatus (not shown) by positioning the second sootblowers 102 to overlap the third region R3. That is, in the present application, for example, no soot blower is arranged in the second region R2 and the fourth region R4 through which air supplied from the outside flows.
In fig. 4, the third supply part 130 and the fourth supply part 140 are shown as being integrally formed in the second sootblower 102, but the present invention is not limited thereto. The third supply part 130 and the fourth supply part 140 may be positioned apart from each other and spaced apart from each other by a predetermined interval.
Referring to fig. 5 and 6, the target rotating body 10 may rotate counterclockwise around the virtual rotation axis 1 (see fig. 1). While the target rotating body 10 is rotating, the first substance M1 and the second substance M2 may be simultaneously and continuously ejected toward the target rotating body 10.
The first substance M1 and the second substance M2 sequentially reach a position of the target rotating body 10, so that the foreign materials of the target rotating body 10 can be easily removed.
First, the first substance M1 may reach the first position P1 of the target rotating body 10. As the target rotating body 10 rotates in the counterclockwise direction, the first position P1 moves in the counterclockwise direction, the first substance M1 reaches the new second position P2, and the second substance M2 may reach the first position P1.
Therefore, the foreign substances can be easily removed from the first point P1 to which the first substance M1 and the second substance M2 sequentially reach.
Fig. 7 and 8 are top views, respectively, of a portion of a heat exchanger washing system according to an embodiment of the present application. Hereinafter, referring to fig. 7 and 8, the adjustment of the position of the first sootblower 101 by the driving part 50 is explained.
Referring to fig. 1 and 7, the position of the first soot blower 101 may be adjusted to be away from or close to the virtual rotation axis 1 by the driving part 50. The first distance D1 and the second distance D2 may be maintained at substantially the same interval while the position of the first sootblower 101 is adjusted.
Referring to fig. 8, a fifth distance D5 may be adjusted by the driving part 50, and the fifth distance D5 is a distance between the first injection ports 113 and the second injection ports 123 of the first sootblower 101. The fifth distance D5 may be shorter or longer according to the rotation speed of the target rotating body 10.
Fig. 9 and 10 are bottom views, respectively, of a portion of a heat exchanger washing system according to an embodiment of the present application. Hereinafter, the adjustment of the position of the second sootblower 102 by the driving part 50 will be described with reference to fig. 9 and 10.
Referring to fig. 1 and 9, the position of the second sootblower 102 may be adjusted by the driving part 50 to be away from or close to the virtual rotation axis 1. The third distance D3 and the fourth distance D4 may maintain substantially the same interval while the position of the second sootblower 102 is adjusted.
Referring to fig. 10, a sixth distance D6 may be adjusted by the driving part 50, and the sixth distance D6 is a distance between the third injection ports 133 and the fourth injection ports 143 of the second sootblower 102. The sixth distance D6 may be shorter or longer according to the rotation speed of the target rotating body 10.
Although the foregoing has been described based on the preferred embodiments of the present application, it will be understood by those skilled in the art or those skilled in the art that various modifications and changes may be made to the present application without departing from the spirit and scope of the present application as set forth in the claims described above.
Therefore, the technical scope of the present application is not limited to the contents described in the detailed description of the specification, but should be determined only by the patent claims.
Description of the reference numerals
10: target rotating body 20: first inlet
23: first outlet 30: second inlet
33: second outlet 101: first soot blower
102: second sootblower 50: driving part
113: first injection ports 123: second injection port
133: third injection ports 143: fourth injection ports
M1: first substance M2: the second substance

Claims (10)

1. A heat exchanger cleaning system comprising:
a target rotating body that rotates around a virtual rotation axis extending in one direction;
a first inlet positioned at an upper portion of the target rotating body and through which a first gas flows toward the target rotating body;
a first outlet positioned opposite the first inlet at a lower portion of the target rotating body and through which the first gas passing through the target rotating body is discharged;
a second inlet positioned to be spaced apart from the first outlet at a lower portion of the target rotating body and into which a second gas having a lower temperature than the first gas flows toward the target rotating body;
a second outlet positioned opposite the second inlet at an upper portion of the target rotating body and through which the second gas passing through the target rotating body is discharged; and
a first ash blower positioned in the first inlet interior space,
wherein the first soot blower includes:
a first ejection port that ejects a first substance toward the target rotating body; and
a second ejection port positioned at an interval from the first ejection port and ejecting a second substance toward the target rotating body,
wherein a first distance separating the first ejection port and the virtual rotation axis of the target rotating body is substantially the same as a second distance separating the second ejection port and the virtual rotation axis of the target rotating body.
2. The heat exchanger washing system as recited in claim 1, wherein the first substance and the second substance are sequentially sprayed to a target position of the target rotating body as the target rotating body rotates centering on the virtual rotation axis.
3. The heat exchanger washing system as claimed in claim 2, wherein the first substance is high temperature steam and the second substance is dry ice particles.
4. The heat exchanger washing system as recited in claim 1 wherein said first ash blower is positioned adjacent said second outlet.
5. The heat exchanger washing system as recited in claim 1, wherein the first injection ports and the second injection ports are respectively positioned on a circumference of one concentric circle of the target rotating body and are respectively positioned to face each of a plurality of target positions positioned spaced apart from each other.
6. The heat exchanger washing system of claim 1, further comprising:
a second sootblower positioned in an interior space of the first outlet,
wherein the second soot blower includes:
third ejection ports that eject the first substance toward the target rotating body; and
a fourth ejection port positioned at an interval from the third ejection port and ejecting the second substance toward the target rotating body,
wherein a third distance separating the third ejection ports and the virtual rotation axis of the target rotating body is substantially the same as a fourth distance separating the fourth ejection ports and the virtual rotation axis of the target rotating body.
7. The heat exchanger cleaning system of claim 6, wherein the second sootblower is positioned adjacent to the second inlet.
8. The heat exchanger washing system as recited in claim 6, wherein the third injection ports and the fourth injection ports are respectively positioned on a circumference of one concentric circle of the target rotating body and are respectively positioned to face each of a plurality of target positions positioned spaced apart from each other.
9. The heat exchanger washing system of claim 6, further comprising:
a driving part adjusting positions of the first soot blower and the second soot blower,
wherein the driving part moves the first and second soot blowers away from or close to the virtual rotation axis of the target rotation body, and adjusts a distance of a spacing between the first and second injection ports such that the first soot blower is arranged such that the first and second distances are substantially the same as each other, and adjusts a distance of a spacing between the third and fourth injection ports such that the second soot blower is arranged such that the third and fourth distances are substantially the same as each other.
10. The heat exchanger washing system as claimed in claim 1, wherein the first substance and the second substance are continuously sprayed at the same time during the rotation of the target rotating body.
CN201990000236.1U 2019-07-26 2019-09-11 Heat exchanger cleaning system Active CN211876854U (en)

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KR10-2019-0090749 2019-07-26
KR1020190090749A KR20210012652A (en) 2019-07-26 2019-07-26 System for cleaning heat exchange and method of cleaning heat exchange
PCT/KR2019/011806 WO2021020642A1 (en) 2019-07-26 2019-09-11 Heat exchanger cleaning system and heat exchanger cleaning method

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