KR102472186B1 - hot air blower for odor removal by closed circulation and drying system using the same - Google Patents

Abstract

In the present invention, the odor incineration unit and the heat exchange unit are sequentially arranged in communication with each other inside the cylindrical casing, so that the steam containing the odor injected into the casing passes through the odor incineration unit to remove the odor and the high-temperature hot air passes through the heat exchange unit. Heat exchange is performed while heat exchange is performed, and the water vapor inside the heat exchange unit is circulated in a closed manner through a steam input line and a steam circulation line connecting the casing and the drying device outside the casing in communication with each other. The drying system used is disclosed.

Description

Closed circulation odor removal hot air blower and drying system using the same {hot air blower for odor removal by closed circulation and drying system using the same}

In the present invention, the odor incineration unit and the heat exchange unit are sequentially arranged in communication with each other inside the cylindrical casing, so that the steam containing the odor injected into the casing passes through the odor incineration unit to remove the odor and the high-temperature hot air passes through the heat exchange unit. Heat exchange is performed while heat exchange is performed, and the water vapor inside the heat exchange unit is circulated in a closed manner through a steam input line and a steam circulation line connecting the casing and the drying device outside the casing in communication with each other. It relates to the drying system used.

In general, food, livestock manure, or industrial sludge generated in sewage treatment plants, restaurants, barns, industrial complexes, etc., is equipped with a separate facility, that is, a food waste fermentation treatment device or a septic tank, to treat it by drying process or chemical treatment. Through the fermentation process, food scraps are recycled as organic fertilizers and animal feeds, and environmental pollution is prevented by removing toxic components of industrial wastes.

In addition, various methods are used to remove odors generated during the drying process of sludge. For example, an adsorption method in which collected odors are adsorbed to activated carbon to remove them, a combustion method in which odorous substances are oxidized using heat, and a solution that is absorbed and removed There are a cleaning method, a microbial deodorization method in which odor is removed by passing it through a tower filled with microorganisms or a carrier carrying microorganisms, and a method of removing odor by spraying a cow or deodorant.

The removal efficiency of each malodorous substance varies greatly depending on the deodorization method. The adsorption method and the combustion method are effective for almost all odorous substances, and the remaining methods have a large difference in removal efficiency depending on each malodorous substance.

First, adsorption methods generally use activated carbon as an adsorbent in many cases.

The adsorption method has the advantage of low initial investment cost, but has a problem in that maintenance and operating costs of the facility are excessively incurred because the activated carbon must be replaced regularly.

Next, in the combustion method, the collected malodorous substances are directly combusted using fuel or burned using a catalyst and then discharged into the atmosphere.

In the case of the combustion method, it is widely used in chemical processes because it is easy to operate and manage the equipment, but it has the disadvantage that the equipment is expensive and the fuel cost is high when the exhaust gas concentration is low.

Republic of Korea Patent Publication No. 10-2001-0074579 (sludge recycling dryer)

The present invention was invented to solve the above problems, and the odor generated during the drying process of food, livestock manure or industrial sludge generated in sewage treatment plants, restaurants, barns, industrial complexes, etc. Provides a hot air fan that can effectively remove But it has a purpose.

For the above purpose, the present invention is a cylindrical casing with an empty interior; It consists of a heating device provided at one end of the casing and discharging flame to the inner center of the casing, and an input and output formed along the longitudinal direction in the inner center of the casing and having both ends open, the input being the heating device. A drying passage of a hollow structure in which the flame is drawn into the inside opposite to the device, the end of the output extends to the inner wall of the casing, and one or more steam inlet holes are formed along the outer circumferential surface of the input side, and the casing A vapor retention space formed between the inner wall and the outer wall of the drying passage, and the steam containing the odor discharged from the drying device provided outside the casing is formed to communicate with one side of the casing so that the steam is introduced into the vapor retention space an odor incineration unit including a steam inlet unit, and configured to discharge hot air to an output after the water vapor drawn into the drying passage through the steam inlet hole is deodorized by a flame; A plurality of hot air transport tubes disposed inside the casing to face the output of the drying passage and having both ends open and having a hollow structure, and a hot air outlet for discharging the hot air passing through the hot air transport tube to the outside, wherein the a heat exchange unit for performing heat exchange by hot air discharged from the drying passage; One end is connected in communication with the steam outlet formed on one side of the upper part of the drying device and the other end is connected in communication with the steam inlet, so that the steam containing the odor discharged from the drying device is transferred to the inside of the steam retention space. It consists of a steam input line and a steam circulation line in which both ends are connected in communication with the hot air outlet and one lower side of the drying device to recover the steam inside the heat exchange unit and re-inject it into the drying device. It is characterized in that it includes; a steam circulation unit that allows continuous deodorization and heat exchange while water vapor including odor generated in the drying process is circulated in a closed manner.

Further, in the present invention, the drying oil is characterized in that it has a form in which the input and output gradually widen toward the outside so that diffusion spraying is performed by the Venturi effect.

In addition, the drying system through the closed circulation odor removal hot air blower according to the present invention includes the closed circulation odor removal hot air blower; a heat medium oil boiler that is connected in communication with the heat exchange unit and heat-exchanged while passing through the heat exchange unit; and a drying device that dries the object to be dried and discharges water vapor containing an odor, wherein the drying device is connected in communication with the thermal oil boiler, a thermal oil supply line, and a thermal oil recovery line, by thermal oil. A main body in which drying plates to be heated and dried are installed in multiple stages up and down, a rotating shaft installed vertically inside the main body so as to penetrate the center of the drying plate, and rotated by receiving power from a motor, and radially on the drying plate At least one scraper installed with a plurality of blades coupled to the rotating shaft and coupled to be inclined at regular intervals so as to gradually move the drying object supplied to the drying plate to the center or outer edge of the drying plate while rotating along with the rotating shaft, and , A drop groove formed on the drying plate in order to drop the drying object moved to the central or outer edge of the drying plate by the wings to the lower end, and a steam outlet connected in communication with the steam input line at one side of the upper part of the main body And a steam inlet connected in communication with the steam circulation line at one side of the lower part of the main body, and a heat medium inlet and a heat medium oil outlet are formed at both ends of the drying plate, respectively, so that the heat medium oil stored in the heat medium oil boiler is circulated. While moving along the inside of the drying plate, the drying plate is heated and then recovered, and the thermal oil, in which heat loss occurs during the heating process of the drying plate, is introduced into the heat exchange unit and moved along the hot air moving tubes by heat exchange. It is possible to prevent the drying efficiency from deteriorating due to heat loss of the thermal oil by allowing it to be recovered to the thermal oil boiler after being heated, and a heat source that heats the thermal oil with hot air formed from water vapor containing odor generated during the drying process of the object to be dried. It is characterized in that it is used to reduce energy consumption for heating the thermal oil.

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According to the present invention made as described above, steam containing odor generated in the process of drying food, livestock manure, or industrial sludge generated in a sewage treatment plant, restaurant, barn, industrial complex, etc. is injected into the casing to incinerate the odor It is formed by high-temperature hot air from which odors are removed while sequentially passing through the heat exchange unit. In particular, it is connected in communication with the drying device provided separately in the heat exchange unit, through the steam input line and steam circulation line, so that the air containing the odor is continuously sealed. While being circulated, an excellent deodorizing effect can be provided, and damage to surroundings and air pollution caused by bad odors can be prevented.

In addition, according to the present invention, the input and output of the drying passage are wider toward the end, so that the hot air injected through the input is diffused and discharged by the Venturi effect, so that more active heat exchange can be expected.

In addition, the present invention heats the drying plate of the drying device to dry the object on the drying plate, while passing through the heat exchange unit, is stored in the heat-medium oil boiler after heat exchange and then re-inserted into the drying device. It is possible to prevent deterioration of drying efficiency due to heat loss. Furthermore, by using the hot air formed from steam containing odors generated during the drying process of the object to be dried as a heat source for heating the thermal oil, energy consumption for heating the thermal oil is reduced, thereby providing an effect of reducing costs.

1 is a schematic illustration for explaining a closed circulation odor removal hot air blower according to the present invention.
Figure 2 is an enlarged schematic illustration of the malodor removal hot air blower according to the present invention.
Figure 3 is an exemplary view showing a drying passage according to an embodiment of the present invention.
4 is an exemplary view of a drying system through a closed circulation odor removal hot air blower according to an embodiment of the present invention.
Figures 5a) and 5b) is a schematic illustration showing the scraper and the drop groove of the drying apparatus according to an embodiment of the present invention.
6 and 7 are exemplary diagrams of a drying system using a closed circulation odor removal hot air blower according to another embodiment of the present invention.

Hereinafter, the described embodiments will be described based on the most suitable embodiments for understanding the technical characteristics of the present invention, and the technical characteristics of the present invention are not limited by the described embodiments. It is to illustrate that the present invention can be implemented as in the embodiments. Therefore, the present invention can be implemented with various modifications within the technical scope of the present invention through the embodiments described below, and these modified embodiments will be said to fall within the technical scope of the present invention. In addition, in the reference numerals described in the accompanying drawings to help understanding of the embodiments described below, related components among components that perform the same action in each embodiment are indicated by the same or extended numbers.

The present invention can effectively remove odors contained in water vapor generated during the drying process of food, livestock manure, or industrial sludge generated in sewage treatment plants, restaurants, barns, industrial complexes, etc. Disclosed is a closed circulation type odor removal hot air fan that can be used as a

1 is a schematic illustration for explaining a closed circulation type malodor removal hot air blower according to the present invention, and FIG. 2 is an enlarged schematic illustration of the malodor removal hot air blower according to the present invention.

As shown in FIGS. 1 and 2, the closed circulation odor removal hot air blower 100 according to the present invention is provided with a cylindrical casing 110 forming an exterior.

The casing 110 has a hollow structure, and the odor incineration unit 120 and the heat exchange unit 130 are sequentially arranged in communication with each other.

The odor incineration unit 120 includes a heating device 121, a drying passage 122, a steam retention space 123, and a steam input unit 124.

The heating device 121 is provided at one end of the casing and discharges high-temperature flame to the inner center of the casing. Here, it is preferable that the heating device secures an amount of contact with the flame when the flame is sufficiently diffused and discharged while water vapor containing an odor is introduced into the drying oil to be described later.

The heating device 121 may be selected from a variety of well-known devices, and for example, a burner using LPG, light oil, or refined oil as a heat source may be used.

The drying passage 122 is a hollow structure formed along the longitudinal direction at the inner center of the casing and having both ends open. The flame is drawn into the device opposite to the inside, and the end of the output extends to the inner wall of the casing.

One or more steam inlet holes 1222 are formed along the outer circumferential surface of the input side of the drying passage 122, and steam containing odor is introduced into the steam through the steam inlet hole, and flame discharged through the input. As the water vapor is directly heated by the steam, the odor is removed, and the high-temperature hot air is discharged through the output to a heat exchange unit to be described later.

The steam retention space 123 is a space formed between the inner wall of the casing and the outer wall of the drying passage, and the steam injected therein stays and gradually moves toward the input side so that it is introduced into the drying passage through the steam inlet hole. .

Here, the drying passage 122 is made of a material having excellent thermal conductivity, such as iron, copper, aluminum, or tungsten, and when heated to a high temperature by a flame, the heat can be transferred to the water vapor injected into the inside as it is In addition, by releasing heat to the outside, an effect of removing some of the moisture and odor contained in the steam staying in the steam retention space can be expected.

In addition, the drying passage 122 may have a venturi structure to diffuse and spray when high-temperature hot air is discharged to the output.

Referring to FIG. 3, the drying passage 122 has a venturi part 1224 having a predetermined diameter with open ends and an empty inside, and an inlet pipe body part 1225 having inputs 1221 formed on both sides of the venturi part. ) and the outlet pipe body 1226 in which the output 1223 is formed may be integrally formed.

Here, the venturi part 1224 has a steam inlet hole 1222 formed adjacent to the inlet pipe body 1225, and when steam is introduced into the venturi part through the steam inlet hole 1222, the inlet pipe The flame introduced through the body part 1225 can more quickly come into contact with water vapor, and the hot air formed while in contact with the flame passes through the venturi part 1224 with a narrow passage cross section, and the flow rate instead of lowering the pressure according to Bernoulli's law After moving rapidly to the outlet tube body 1226 as it accelerates, when passing through the outlet tube body with a wide passage cross-sectional area, the flow rate slows down according to the principle of the diffuser and is diffused and discharged into the heat exchange unit.

Next, the steam input unit 124 is provided on one side of the casing to inject the steam containing the odor discharged from the drying device 300 to be described below, which is provided outside the casing, into the steam retention space. formed to communicate.

Preferably, the water vapor inlet 124 is preferably formed adjacent to the output 1223 of the drying passage so as to ensure that the water vapor stays inside the steam storage space 123 sufficiently.

The heat exchanger 130 includes a plurality of hot air moving tubes 131 disposed inside the casing to face the output 1223 of the drying passage and having both ends open and having a hollow structure, and the hot air passing through the hot air moving tubes. It includes a hot air outlet 132 for discharging to the outside.

The high-temperature hot air discharged through the output moves along the hot air moving tube 131 and then is introduced into the drying device through the hot air outlet 132, and the thermal oil of the thermal medium oil boiler 200 to be described later is injected into the heat exchange unit. It is heated by heat exchange while moving along the hot air moving tubes and then reintroduced to the heat medium oil boiler.

In addition, the present invention includes a steam circulation unit 140 that allows continuous deodorization and heat exchange while water vapor including odor generated during the drying process of the object to be dried is closed and circulated.

The steam circulation unit 140 induces continuous circulation of steam by connecting the odor removal hot air blower and the drying device in communication with each other, and is composed of a steam input line 141 and a steam circulation line 142.

The steam input line 141 has one end connected in communication with the steam discharge port 313 formed on one side of the upper part of the drying device and the other end connected in communication with the steam input unit 124, so that the drying device 300 ) The steam containing the odor discharged from the steam is injected into the steam retention space.

Both ends of the steam circulation line 142 are connected in communication with the hot air outlet 132 and the steam inlet 312 formed on one side of the lower part of the drying device to recover the steam that has passed through the heat exchange unit 130. It is reintroduced into the drying device 300.

In addition, the steam circulation line 142 is provided with a cooler 150 for removing moisture contained in the steam discharged through the hot air outlet 132 so that the moisture is removed and the dried air is circulated and introduced into the drying device it is desirable

The odor removing hot air blower 100 according to the present invention as described above can smoothly remove odor contained in water vapor generated in the drying process of the object to be dried by the odor incineration unit 120 and the heat exchange unit 130, and deodorize The high-temperature hot air formed in the process is discharged to the heat exchanger and can be used for various purposes as a heat source. In particular, according to the present invention, by the steam circulation unit 140, water vapor containing odor is continuously circulated from the odor removing hot air blower along the drying device to prevent damage to the surroundings and air pollution due to odor.

Next, FIG. 4 is an exemplary view of a drying sheath through a closed circulation odor removal hot air blower according to an embodiment of the present invention, which is connected in communication with the heat exchange unit 130 and stores high-temperature thermal oil through heat exchange A heat medium oil boiler 200 is provided.

The heat medium oil boiler 200 is connected in communication with the heat exchange unit 130 through a heat exchange line 210, and the heat transfer oil passes through the heat exchange unit through a circulation pump (not shown) and then is injected into the interior and then put into a drying device to be described later The object to be dried is heated and dried. Thereafter, a cycle of recovering the thermal oil in which heat loss has occurred and re-injecting it into the heat exchange unit is repeated.

In addition, the present invention includes a drying device 300 for receiving high-temperature thermal oil from the thermal oil boiler 200 and drying an object to be dried.

The drying device 300 is, for example, a cylindrical body in which a space is formed inside so that food, livestock manure, or industrial sludge generated in sewage treatment plants, restaurants, barns, industrial complexes, etc., that is, dry objects can be input and dried 310 is provided.

An object to be dried inlet 311 for inputting an object to be dried is formed on one side of the main body.

In addition, a drying plate 320 for drying the object to be dried is installed inside the main body.

The drying plate 320 is in the form of a disc with a predetermined thickness and is hollow inside, and is provided in multiple stages in the upper and lower parts of the main body, and a groove (not shown) is formed in the center of each drying plate.

In addition, a rotating shaft 330 passing through a central groove of each drying plate is vertically installed inside the main body. The rotating shaft 330 is rotated by receiving power from the motor M.

On the other hand, the present invention has a structure in which the object to be dried introduced into the main body is sequentially moved from the uppermost drying plate to the lower drying plate. To this end, the present invention is coupled to the rotary shaft and rotates together with the rotary shaft to gradually move the drying object supplied to the drying plate to the center or outer edge of the drying plate 340, and the central part or It includes a drop groove 350 formed on the drying plate in order to drop the drying object moved to the outer edge to the lower end.

5a) and 5b), the scraper 340 is spaced apart from the drying plate by a predetermined height so that a certain portion of the sludge can be left and moved, a plurality of blades 341 coupled to be inclined at regular intervals ) is installed, and may be installed in plurality in a radial direction on the drying plate.

The drop groove 350 may be selectively formed at the center or the outer edge of the drying plate, and the position of the drop groove formed at the upper and lower parts may be selected from the central part and the outer edge to increase the time the sludge stays on the drying plate. It can be formed alternately in parts.

In addition, as described above, a steam inlet 312 connected in communication with the steam circulation line 142 is formed on one side of the lower part of the body, and connected in communication with the steam input line 141 on one side of the upper part of the main body. A water vapor outlet 313 is formed.

In addition, in the present invention, a heat medium inlet 321 is formed on one side of the drying plate 320 in communication with the heat medium oil boiler to inject heat medium oil into the inside, and on the other side for discharging heat medium oil to the outside. A heat medium oil outlet 322 is formed.

Here, the heat medium oil inlet 321 is connected in communication with the heat medium oil boiler through the heat medium oil supply line 220, and the heat medium oil outlet 322 communicates with the heat medium oil boiler through the heat medium oil circulation line 230. Connected.

The drying plate 320 is heated by the heat medium oil supplied from the heat medium oil boiler to dry the object to be dried introduced into the main body, where the heat medium oil injected into the drying plate heats the drying plate 320. Heat loss inevitably occurs. According to the present invention, the heat transfer oil, which has suffered heat loss during the drying process, is reintroduced to the heat exchange unit 130, heated by heat exchange, and then reintroduced to the heat transfer boiler 200.

The present invention can prevent deterioration in drying efficiency due to heat loss of the thermal oil while this circulation continues, and in particular, the hot air formed in the process of removing the odor contained in the water vapor generated in the drying process of the object to be dried is transferred to the thermal oil. Energy and cost for heating thermal oil can be saved by using it as a heat source for heating.

Next, FIGS. 6 and 7 are schematic diagrams for explaining a drying system according to another embodiment of the present invention.

First, as shown in FIG. 6, in the present invention, the heat medium oil boiler 200 may be integrally formed under the heat exchange unit 130.

In addition, a heat medium oil inlet 133 connected in communication with the heat medium oil supply line 220 is formed on one side of the upper part of the heat exchange part 130, and the heat exchange part 130 and the heat medium oil boiler 200 communicate with each other. It is connected so that the heat transfer oil re-injected through the heat-medium oil circulation line 230 moves along the heat exchange unit, undergoes heat exchange, and then re-injects into the heat-medium oil supply line 220 through the heat-medium oil inlet 133. have.

In addition, when the heat medium oil boiler 200 is heated by the electric heating rod 210 and re-injected into the inside through the heat medium oil circulation line 230, the heat is transferred to the heat exchange unit 130. A heat transfer material 240 such as gravel, marble, or metal scrap having excellent thermal conductivity may be filled.

Here, the material of the metal scrap 20 may be aluminum, copper, zinc or iron, and the heat transfer material 240 may be separated from the electric heating rod 201 by a perforated network (not shown).

In this way, when the heat medium oil boiler 200 is integrally formed at the lower part of the heat exchange part 130, the function of the heat exchanger boiler can be provided, and as shown in FIG. When a pair of heat exchange lines 210 can be omitted, an effect of reducing manufacturing cost can be expected.

100: odor removal hot air blower
110: casing
120: odor incineration unit
121: heating device
122: with drying oil
1221: input 1222: steam inlet hole
1223: output
123: steam retention space
124: steam input unit
130,130′: heat exchange part
131,131′: hot air movement pipe 132,132′: hot air outlet
133: heat medium inlet
140: steam circulation unit
141: steam input line 142: steam circulation line
150: cooler
200: heat medium oil boiler 201: electric heating rod
210: heat exchange line 220: heat transfer oil supply line
230: heat medium oil circulation line
240: heat transfer material
300: drying device
310: body
311: drying object inlet 312: steam inlet
313: steam outlet
320: drying plate
321: heat medium oil inlet 322: heat medium oil outlet
330: axis of rotation
340: scraper
350: fall home

Claims (3)

A cylindrical casing 110 with an empty interior;
A heating device 121 provided at one end of the casing and discharging flame to the inner center of the casing, and an input 1221 and an output 1223 formed along the longitudinal direction in the inner center of the casing and having both ends open. ), but the input 1221 is opposed to the heating device so that the flame is introduced into the inside, and the end of the output 1223 extends to the inner wall of the casing, and one or more steam is formed along the outer circumferential surface of the input side. A drying passage 122 having a hollow structure in which an inlet hole 1222 is formed, a steam retention space 123 formed between an inner wall of the casing and an outer wall of the drying passage, and a drying device provided outside the casing ( 300) includes a steam introduction part 124 formed in communication with one side of the casing so that steam containing odor discharged from the steam is introduced into the steam retention space, and is introduced into the drying passage through the steam inlet hole 1222. an odor incineration unit 120 configured such that hot air of high temperature is discharged to an output 1223 after steam is deodorized by a flame;
A plurality of hot air transport tubes 131 disposed inside the casing to face the output of the drying passage and having both ends open and having a hollow structure, and a hot air outlet 132 for discharging the hot air passing through the hot air transport tubes to the outside. ), and a heat exchange unit 130 for performing heat exchange by the hot air discharged from the drying passage;
One end is connected in communication with the steam discharge port 313 formed on one side of the upper part of the drying device, and the other end is connected in communication with the steam inlet 124, so that the steam containing the odor discharged from the drying device is discharged from the drying device. The steam input line 141 injected into the steam retention space and both ends thereof are connected in communication with the hot air outlet 132 and one lower side of the drying device, respectively, to recover the steam inside the heat exchanger and return it to the inside of the drying device. A steam circulation unit 140 composed of a steam circulation line 142 for re-injection, and allowing continuous deodorization and heat exchange while water vapor including odor generated during the drying process of the object to be dried is circulated in a closed manner;
Closed circulation odor removal hot air blower comprising a.
[4] The air blower of claim 1, wherein the drying passage (122) has a shape in which the input and output gradually widen toward the outside so that the diffusion jet is performed by the Venturi effect.
A closed circulation odor removal hot air blower 100 according to claim 1 or 2; a heat-medium holding boiler 200 connected in communication with the heat-exchanging part 130 and exchanging heat while passing through the heat-exchanging part; And a drying device 300 for drying the object to be dried and discharging water vapor containing an odor;
The drying device 300,
A main body 310 in which a drying plate 320, which is connected in communication with the thermal oil boiler 200, a thermal oil supply line 220, and a thermal oil recovery line 230, and is heated and dried by thermal oil, is installed in multiple stages up and down therein. ), a rotating shaft 330 installed vertically inside the main body to penetrate the center of the drying plate and rotated by receiving power from the motor, and a rotating shaft 330 installed on the drying plate in the radial direction but coupled to the rotating shaft and One or more scrapers 340 installed with a plurality of blades inclined at regular intervals so as to gradually move the drying object supplied to the drying plate to the center or outer edge of the drying plate while rotating together, and drying by the blades A drop groove 350 formed on the drying plate in order to drop an object to be dried moved to the center or outer edge of the plate to the lower end, and a steam outlet connected in communication with the steam input line 141 at one side of the upper part of the main body. 313 and a steam inlet 312 connected in communication with the steam circulation line 142 at one side of the lower part of the main body,
A heat medium oil inlet 321 and a heat medium oil outlet 322 are formed at both ends of the drying plate, respectively, and the heat medium oil stored in the heat medium oil boiler moves along the inside of the drying plate by a circulation pump to heat the drying plate. to be recovered later,
The thermal oil, in which heat loss occurs during the heating process of the drying plate, is introduced into the heat exchange unit 130, moved along the hot air moving tubes, heated by heat exchange, and then returned to the thermal medium oil boiler 200. Heat loss of the thermal oil It is possible to prevent deterioration of drying efficiency due to
A closed circulation odor removal heater characterized in that the hot air formed from the steam containing the odor generated during the drying process of the object to be dried is used as a heat source to heat the thermal oil to reduce energy consumption for heating the thermal oil. drying system used.

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