JP2013117359A - Drying equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop novel drying equipment for drying sludge or the like which can suppress a CO2 emission amount capable of operating a low and medium temperature hot air dryer using vapor, or a conductive heat transfer dryer at a low energy cost.SOLUTION: Drying equipment is configured so that vapor S1 is produced by a heat pump unit 20 using a dryer 1 and/or a low temperature heat source emitted from a peripheral device, while heat contained in the vapor S1 directly or indirectly acts on an object to be treated which is supplied to the dryer 1, thereby enabling the drying treatment of the object to be treated.

Description

  The present invention relates to a treatment facility for high-moisture objects such as sludge discharged from human waste treatment facilities, sewage treatment facilities, and various production factories, and particularly, a low-temperature heat source that has been conventionally difficult to use ( For example, the present invention relates to a drying facility that can effectively use heat in low-temperature drainage or low-temperature steam.

Recently, environmental conservation efforts have become popular, and from the viewpoint of energy saving, waste such as human waste, sewage treatment facilities and wastes such as municipal waste that contain a large amount of water discharged from various production plants are treated. Even in facilities that do this, attempts have been made to effectively use waste heat (see, for example, Patent Document 1).
Waste heat in such facilities is contained in exhaust gas, exhaust hot water, flash steam, etc. Among them, exhaust heat (400-1000 ° C) can be easily recovered using a heat exchanger. Is something that can be done. On the other hand, waste heat recovery from low-temperature wastewater (40-90 ° C) and flash steam cannot be efficiently performed unless the heat transfer area of the heat exchanger is very large, so it is cost-effective and aggressive. The actual situation is not implemented.

By the way, when drying the sludge, etc., a high-temperature hot air dryer (hot air temperature 800 to 1000 ° C.) that is relatively inexpensive, requires little installation space, and has excellent drying performance is used. A hot air dryer (steam temperature of about 160 ° C. or less) or a conductive heat transfer dryer is rarely employed.
The reason is that a large amount of energy is required to generate steam and the running cost is high. In order to operate these dryers, equipment such as a dedicated large boiler and installation space are required. In addition to enormous initial costs for the main body, steam piping, drain piping, and electrical work, workers for maintenance and management are required.

JP 2010-158616 A

The present invention has been made in view of such a background, and in particular, in a facility for drying sludge and the like, it is possible to suppress the CO ₂ emission of the facility, and a medium / low temperature hot air dryer using steam. Development of a new drying facility that can operate a heat transfer dryer and a conductive heat transfer dryer at low energy costs was a technical issue.

  That is, the drying facility according to claim 1 is provided with a dryer and a device for supplying a heating medium to the dryer, and the dried material is heated by heating the object to be processed supplied to the dryer. In the drying equipment configured to be able to obtain the steam, steam is generated by a heat pump unit using a low-temperature heat source discharged from the dryer and / or peripheral equipment, and the heat in the steam is directly or indirectly In particular, it is configured to be able to perform a drying process on the workpiece by acting on the workpiece supplied to the dryer.

  In addition to the above requirements, the drying equipment according to claim 2 is provided with a multi-tube heating tube in a main body shell, and the multi-tube heating tube is rotated while a heating medium is passed through the heating tube. A conductive heat transfer dryer configured to dry the workpiece by contacting the multi-tube heating tube while retaining the workpiece in the main body shell, and generated by the heat pump. It is configured to use steam as the heating medium.

  Furthermore, in addition to the requirements of claim 1, the drying facility according to claim 3 is configured such that the dryer has a heating medium when the object to be processed moves on a track of a net conveyor disposed in the drying chamber. A band-type dryer configured to be dried by direct contact, using steam generated by the heat pump as a heat source for a heat exchanger, and the outside air heated by the heat exchanger as the heating medium It is comprised so that it may be used as a characteristic.

  Furthermore, in addition to the requirements of claim 1, the dryer according to claim 4 is configured such that the dryer performs drying by directly contacting the heating medium with the object to be processed flowing down the drying chamber. The steam generator generated by the heat pump is used as a heat source for a heat exchanger, and the outside air heated by the heat exchanger is used as the heating medium. It is characterized by being.

  Further, in the drying facility according to claim 5, in addition to the requirement according to claim 1, in the dryer, the heating medium directly contacts the workpiece to be scraped up in the rotating direction of the drum in the rotating drum. A rotary aeration dryer configured to perform drying, using steam generated by the heat pump as a heat source for a heat exchanger, and using outside air heated by the heat exchanger as the heating medium. It is characterized by being constituted by the following.

  Furthermore, the drying equipment according to claim 6 is characterized in that, in addition to the above requirements, the heat pump is a heat pump unit including a condenser, an expansion valve, an evaporator and a compressor. .

Furthermore, in addition to the requirements of claim 1, 2, 3, 4 or 5, the drying equipment according to claim 7 is configured such that the heat pump comprises a vacuum tank and a compressor. It consists of features.
The above-described problems can be solved by using the requirements described in these claims as means.

First, according to the invention described in claim 1, since steam can be generated using heat in a low-temperature heat source discharged from a dryer or peripheral equipment, a large boiler body and a steam pipe associated therewith, Drain piping, electrical work, and the like, as well as workers for maintaining and managing them, are no longer necessary, and it is possible to construct a drying facility with a low initial cost and to reduce running costs.
In addition, since heat can be recovered from the low-temperature heat source that has been discharged without being used, waste heat from the drying facility and its surrounding facilities can be used effectively, and at the same time fuel consumption and CO ₂ emissions can be reduced. Can be reduced.

  Further, according to the invention described in claim 2, since the drying equipment using the conductive heat transfer type dryer with less exhaust gas is constructed, the cost for deodorization of the exhaust gas can be reduced.

  Furthermore, according to the invention described in claim 3, since the drying equipment using the band type dryer is constructed, when the shape of the dried product is suitable for the application, it is preformed into a desired shape. In addition, the dried object can be efficiently dried.

  Furthermore, according to the invention described in claim 4, since the drying equipment using the flow-down dryer is constructed, the moisture can be accurately adjusted to a desired moisture value to efficiently dry the workpiece. Can do.

  Further, according to the invention described in claim 5, since a drying facility using a rotary aeration dryer is constructed, uniform drying without unevenness can be performed and a large amount of processing can be performed.

  Furthermore, according to the sixth aspect of the present invention, heat from a low-temperature heat source can be easily recovered, and steam can be generated efficiently.

  Furthermore, according to the invention described in claim 7, since the steam generated from the vacuum chamber can be directly used for the compressor, the heat recovery system from the low-temperature heat source can be simplified, and can be operated at low cost.

It is a block diagram which shows the drying equipment of this invention comprised with the conduction heat-transfer type dryer. It is a side view which shows a part of seeing through a heat conduction type dryer. It is a block diagram which shows the heat pump comprised with the vacuum chamber and the compressor. It is a block diagram which shows the drying equipment comprised with the band type dryer. It is a block diagram which shows the drying installation provided with the flow-down type dryer. It is a block diagram which shows the drying installation provided with the rotary ventilation dryer. It is a block diagram which shows the existing drying equipment comprised with the existing drying equipment comprised with the kiln type dryer which uses a burner as a heat source, and the conduction heat-transfer type dryer.

  The drying equipment F according to the present invention includes one shown in the following examples as one of the best modes, and also includes a mode modified based on this technical idea.

In FIG. 1, what is indicated by a symbol F is an example of the drying equipment of the present invention, and this equipment reduces the moisture by drying sludge M0 discharged from human waste treatment facilities, sewage treatment facilities and various production factories. To obtain a dried product M1.
Although not shown in the drawings, the drying equipment F is usually operated in a state where other devices such as a generator and an incineration facility are installed.
The drying equipment F includes a dryer 1, a heat pump 2 for generating the steam S 1, a compressor 3 for compressing the steam S 1 into a steam S 2 in a heated state, and the drying The main device is a deodorizing furnace 4 which is a deodorized exhaust gas G2 in which harmful substances are rendered harmless by burning the exhaust gas G1 discharged from the machine 1.
Hereinafter, the components of the drying facility F for the purpose of drying the above-described sludge will be described in detail.

First, as an example in this embodiment, the dryer 1 is a conductive heat transfer type that conducts heat indirectly from the heating medium to the object to be treated without directly contacting the sludge M0 as the object to be treated and the heating medium. A device provided with a multi-tube heating tube 11 is adopted.
Specifically, as shown in FIG. 2, a multi-tube heating tube 11 is provided in a main body shell 10 provided on a machine casing 15, and the multi-tube heating tube 11 is provided with a heating medium (steam) therein. S2) is supplied and rotated, and the object to be processed is put into the main body shell 10, and the object to be processed is brought into contact with the multi-tubular heating tube 11 while staying in the main body shell 10. It is an apparatus that performs drying.

The main body shell 10 is a hollow member having an oblong cross section as an example, and has an inlet 101, an overflow outlet 102, a carrier gas outlet 103, and an exhaust outlet 104.
Here, the inlets 101 are formed at a plurality of locations on the upper part of the main body shell 10. First, in FIG. 2, a first inlet 101 a is formed near the exhaust port 104 formed at the upper left side. A second input port 101b is formed in a portion closer to the center than the exhaust port 104, and a third input port is formed between the second input port 101b and the carrier gas port 103 formed at the upper right side. A mouth 101c is formed. In this embodiment, the input ports 101 are formed at three locations, but the input ports 101 may be formed at one location, two locations, or four locations or more according to the specifications of the dryer 1.

The main body shell 10 and the multi-tube heating pipe 11 are installed in the machine frame 15 in a horizontal state, or the main body shell 10 and the multi-tube heating pipe 11 are inclined so that the exhaust port 104 side is somewhat higher than the carrier gas port 103 side. Installed in the frame 15.
Furthermore, the main body shell 10 has a double jacket structure, and a steam passage path is formed from a steam supply port 105 formed in the vicinity of the charging port 101a to a drain port 106 formed below the overflow port 102. The structure which can heat up the inside of the main body shell 10 is taken. In addition, it can replace with such a double jacket structure and can also install trace piping.
The overflow outlet 102 is formed on the side surface of the body shell 10 at a high position. Further, a chute 12 is provided so as to cover the overflow outlet 102, and a dry matter discharge port 121 formed in the chute 12 is provided. A rotary valve 122 is provided.

Here, the multi-tube heating tube 11 includes end plates 112 on both sides of a tube bundle 116 formed by arranging a plurality of tubes in a cylindrical shape, and includes a shaft body 113 at the center of the end plate 112. The shaft body 113 is rotatably supported by a bearing block 114 provided in the machine casing 15. A motor (not shown) is provided on the machine casing 15 as a driving device for rotating the multi-tube heating tube 11.
Rotary joints 115 (115a, 115b) are attached to both ends of the shaft body 113 and connected to the tube bundle 116. Further, a seal mechanism 13 is provided between the shaft body 113 and the main body shell 10 for shielding from the outside air.
In addition, the side periphery of the tube bundle 116 is provided with a number of angles 111 (12 in this embodiment) to which a plurality of lifters 117 and feed blades 118 having appropriate angles are attached. The object to be treated (sludge M0) is scraped up to come into contact with each tube of the tube bundle 116 and proceeds from the inlet 101 side to the overflow outlet 102 side.

  During operation of the dryer 1, carrier gas is supplied into the main body shell 10 from the carrier gas port 103, and volatile components volatilized from the sludge M0 as the object to be treated by heating of the multi-tube heating tube 11 are The carrier gas is carried away from the main body shell 10 through the exhaust port 104. Incidentally, since the amount of the carrier gas is very small, the amount of the exhaust gas G1 discharged from the conduction heat transfer type dryer 1 is also small.

  Next, the heat pump 2 will be described. In this embodiment, a heat pump unit 20 that includes a condenser 21, an expansion valve 22, an evaporator 23, and a compressor 24 to form a heat pump cycle is employed. There is, for example, one using carbon dioxide as a refrigerant. In addition, the temperature of the vapor | steam S1 produced | generated in the heat pump unit 20 can be raised to about 120 degreeC by employ | adopting carbon dioxide as said refrigerant | coolant. Incidentally, in addition to carbon dioxide, when a heat pump unit 20 having an equivalent performance using other refrigerants is put into practical use in the future, this can be adopted.

  Next, the compressor 3 will be described. In this embodiment, as an example, a centrifugal compressor, a reciprocating compressor, a rotary compressor, a scroll compressor, and the like are employed, and are generated in the heat pump unit 20. The steam S1 at about 120 ° C. can be compressed into the steam S2 at 150 to 160 ° C.

  Next, the deodorizing furnace 4 will be described. This is a device for converting the exhaust gas G1 sent from the dryer 1 into the deodorizing exhaust gas G2, and supplying hot air from the burner 41 into the combustion cylinder 40. The exhaust gas G1 can be combusted in the combustion cylinder 40. The combustion cylinder 40 is formed with an air supply port 42 and an exhaust port 43.

And the drying equipment F is comprised by connecting the said dryer 1 and another apparatus as shown in FIG. 1 as an example, Here, about the connection aspect of each apparatus, steam S2 and external air first. It demonstrates along the supply path | route to the dryer 1 of A. FIG.
First, a conduit for supplying water W from the outside is connected to the condenser 21 in the heat pump unit 20. Further, the condenser 21 and the compressor 3 are connected by a pipe line, and the compressor 3 and the rotary joint 115a in the dryer 1 are connected by a pipe line.
Further, the pipe connecting the compressor 3 and the rotary joint 115a is branched, and this branch is connected to the heat exchanger 7 and the steam supply port 105 in the dryer 1. The heat exchanger 7 is for raising the temperature of the outside air A, and a pipe line is provided so that the temperature of the outside air A is supplied to the carrier gas port 103.

Next, the route of the exhaust gas G1 discharged from the dryer 1 will be described. Specifically, a dust collector 5 to which a cyclone, a bag filter or the like is applied is connected to the exhaust port 104 of the dryer 1, and a dehumidifier 6 is further connected to the dust collector 5. It is configured so that dust and excess water in the exhaust gas G1 exhausted from can be removed.
The dehumidifier 6 cools the exhaust gas G1 supplied into the housing 60 from the air supply port 62 by passing cooling water through a cooling pipe 61 provided in the housing 60, and condenses the vapor component. Thus, after dehumidifying, it is configured to discharge from the exhaust port 63. A drain port 64 for discharging the drain D4 generated in the housing 60 is formed in the housing 60.

  The exhaust port 63 in the dehumidifier 6 is connected to the heat exchanger 8, and this heat exchanger 8 is for taking in the heat in the deodorized exhaust gas G2 discharged from the deodorizing furnace 4 into the exhaust gas G1. The heated exhaust gas G1 is supplied to the air supply port 42 in the deodorizing furnace 4.

  The drying equipment F of the present invention is configured as described above as an example, and the operation mode of this apparatus will be described below.

(1) [Steam generation]
First, in the heat pump unit 20, the low-temperature waste water W1 that is a low-temperature heat source of about 40 to 90 ° C. discharged from the dryer 1 and / or peripheral equipment is supplied to the evaporator 23, and the heat in the low-temperature waste water W1. Is taken into the refrigerant and moves to the water W in the condenser 21, where steam S1 of about 120 ° C. is generated.
Next, the steam S1 is compressed by the compressor 3 to become steam S2 of about 150 to 160 ° C.
As the low temperature drainage W1, one discharged from a generator, an incineration facility or the like attached to the drying equipment F, or drains D1, D2, D3, D4, etc., which will be described later, are used.

(2) [Production of dried product]
Next, the steam S2 is supplied to the rotary joint 115a in the dryer 1, and the sludge M0 that has been appropriately dehydrated is introduced into the main body shell 10 through the inlets 101a, 101b, and 101c.
Also, the outside air A heated by the steam S2 in the heat exchanger 7 is supplied into the main body shell 10 from the carrier gas port 103, and this outside air A functions as a carrier gas for moisture evaporated from the sludge M0. . In addition, the vapor | steam S2 which conducted the heat | fever to the external air A condenses, and is discharged | emitted as drain D1.
Then, the sludge M0 stays in the main body shell 10 and is brought into contact with the multi-tube heating pipe 11, whereby heat is indirectly transferred from the steam S2 to the sludge M0, and the moisture in the sludge M0 evaporates and is dried. It is what is said.
Eventually, the evaporation of moisture proceeds to the sludge M0 and becomes a dried product M1 (for example, 10 to 30% WB) and is discharged from the dry matter discharge port 121.
Further, the steam S2 that indirectly conducts heat to the sludge M0 condenses and is discharged from the rotary joint 115b as drain D2.
The steam S2 supplied from the steam supply port 105 is condensed after the temperature of the main body shell 10 is raised, and is discharged from the drain port 106 as a drain D3.

(3) [Flow of exhaust gas]
On the other hand, the water evaporated from the sludge M0 is carried by the carrier gas and exhausted as exhaust gas G1 (70 to 100 ° C.) from the exhaust port 104. After the dust is removed in the dust collector 5, the dehumidifier 6 To be supplied.
Next, since the exhaust gas G1 is cooled by the cooling water flowing in the cooling pipe 61 in the dehumidifier 6, the moisture is condensed and dehumidified. The drain D4 generated at this time is discharged from the drain port 64. The
Next, the exhaust gas G1 is heat-exchanged with the deodorizing exhaust gas G2 (800 ° C. as an example) in the heat exchanger 8 and is heated, and in the deodorizing furnace 4 at 500 ° C. as an example. It is supplied to the air supply port 42 and burned here to become deodorized exhaust gas G2, and is discharged to the outside via the heat exchanger 8 as described above.

  The drying equipment F of the present invention is operated as described above as an example. In particular, in this embodiment, the dryer 1 provided with the multi-tube heating tube 11 is employed, and therefore, shown in FIG. In this way, the through-hole of the main body shell 10 in the multi-tube heating tube 11 which is a rotating body is only the shaft body 113, and this portion is constituted by a compact and highly airtight seal mechanism 13 which is sealed by a gland packing or the like, for example For this reason, the leakage air of the outside air which penetrates into the main body shell 10 maintained at a negative pressure rather than the atmospheric pressure is greatly suppressed. Further, the carrier gas supplied to the carrier gas port 103 is dried with the minimum amount of gas necessary for carrying the water evaporated from the sludge M0, that is, the amount of outside air heated by the heat exchanger 7. . For this reason, since the flow rate of the dry exhaust gas G1 is significantly less than that of a so-called rotary kiln type or rotary drum type device, the amount of heat required in the deodorizing furnace 4 can be reduced.

Furthermore, according to the drying equipment F of the present invention, the steam S1 can be generated using the heat in the low temperature waste water W1 discharged from the dryer 1 and peripheral devices, and therefore, the large boiler body and the accompanying equipment are attached thereto. Steam piping, drain piping, electrical work, etc., as well as workers for maintaining and managing them, are no longer required, and it is possible to construct a drying facility F with reduced CO ₂ emissions and to reduce running costs. it can.
Furthermore, according to the drying equipment F of the present invention, heat can be recovered from the low-temperature waste water W1 that has been conventionally discharged without being used, so that exhaust heat from the drying equipment F and its surrounding facilities is reduced. At the same time, the amount of fuel used and the amount of CO ₂ emissions can be reduced.

Here, when the drying equipment F of the present invention shown in FIG. 1 and the drying equipments F ′ and F ″ shown in FIG. 7 are used to obtain the same amount of dry product M1, the running cost and CO ₂ emission amount are reduced. The trial calculation results are shown in Table 1 below, and it has been confirmed that the drying equipment F of the present invention can realize significant reduction in both items.
Here, in Table 1, the running cost [yen / t] means the running cost (yen) per 1 ton of sludge, and the CO ₂ emissions [t / year] means the annual CO ₂ emissions. _{2 This} means the weight (tons) of emissions.
The drying equipment F ′ is configured using a kiln type as the dryer 1E and using a burner as its heat source.
In addition, the drying equipment F ″ is configured using the conduction heat transfer type shown in FIG. 2 as the dryer 1 and using a boiler as a steam generation source.

〔他の実施例〕

[Other Examples]

  The present invention is a representative example of the embodiment described above, but can take the following forms based on the technical idea of the present invention.

[Other Examples of Heat Pump]
First, the configuration of the heat pump 2 can be as shown in FIG. 3, and this configuration comprises a vacuum chamber 25 and a compressor 26. In this case, the low temperature waste water W1 supplied to the vacuum chamber 25 evaporates under reduced pressure, and is further compressed by the compressor 26, whereby steam S2 of 150 to 160 ° C. is generated. And since such a heat pump 2 can be comprised at low cost, the cost reduction of the drying equipment F whole can be aimed at.

[Band type dryer]
Further, in the basic embodiment described above, the drying equipment F in which the conductive heat transfer type dryer 1 is adopted is shown, but it is also possible to configure the drying equipment F by applying other types of dryers. It is.
First, as shown in FIG. 4, a band-type dryer can be adopted as the dryer 1B, and this band-type dryer is placed on a track such as a net conveyor in which the object to be processed is arranged in the drying chamber. When moving, it is dried in direct contact with the heating medium, and it can be processed for a long time by taking a large length of the net conveyor or providing it in multiple stages. .
Further, the drying equipment F shown in FIG. 4 uses a heat pump 2 to heat the steam S1 generated by heat recovery from the low temperature waste water W1 or the steam S2 whose temperature is raised by the compressor 3 by the compressor 3. 9 to raise the temperature of the outside air A.
Note that such a band-type dryer 1B is provided when the dried product M1 is in the form of a rod, plate, or pellet, and the object to be processed is preformed into a desired shape. Can be efficiently dried.

[Flow-down dryer]
In addition, as shown in FIG. 5, a flow-down dryer can be adopted as the dryer 1 </ b> C. In this flow-down dryer, the heating medium is in direct contact with the workpiece flowing down in the drying chamber. Drying is performed. And after drying the processed material supplied from above to the target moisture value, the processed material is dropped to the lower stage, for example, by rotating the plate that has been supported by standing the processed object. Similarly, an operation for drying to a target moisture value is performed, and drying is performed while repeatedly performing drying and dropping in the vertical direction. The plate for standing and supporting the object to be processed is constituted by a punching plate or the like in which a hole is formed so that a heating medium such as hot air is allowed to pass and a molded object to be processed is not allowed to pass. . Moreover, it is also possible to employ a structure in which the dried product M1 can be obtained by dropping the object to be processed only once.
In addition, such a flow-down type dryer 1C is provided when the form of the dried product M1 is a short columnar shape or a pellet shape, and drying of an object to be processed that has been preformed into a desired shape. Can be performed efficiently.
5 uses the heat pump 2 to heat-exchange steam S1 generated by heat recovery from the low temperature waste water W1 or steam S2 whose temperature has been raised by the compressor 3 using the steam S1. As a heat source for the vessel 9.

[Rotating ventilation dryer]
Furthermore, as shown in FIG. 6, a rotary aeration dryer can be adopted as the dryer 1D, and this rotary aeration dryer is applied to an object to be scraped up in the rotation direction of the drum in the rotation drum. On the other hand, drying is performed by direct contact with the heating medium.
6 uses the heat pump 2 to heat-exchange steam S1 generated by heat recovery from the low temperature waste water W1 or steam S2 whose temperature has been raised by the compressor 3 using the steam S1. It serves as a heat source for the vessel 9 and serves to preheat the outside air A supplied to the dryer 1D.
In addition, according to such a rotary ventilation type dryer 1D, uniform drying without unevenness can be performed, and a large amount of processing can be performed.

DESCRIPTION OF SYMBOLS 1 Dryer 1B Dryer 1C Dryer 1D Dryer 1E Dryer 10 Main body shell 101 Input port 101a Input port 101b Input port 101c Input port 102 Overflow port 103 Carrier gas port 104 Exhaust port 105 Steam supply port 106 Drain port 11 Multi-tube Heating tube 111 Angle 112 End plate 113 Shaft body 114 Bearing block 115 Rotary joint 115a Rotary joint 115b Rotary joint 116 Tube bundle 117 Lifter 118 Feed blade 12 Chute 121 Dry matter discharge port 122 Rotary valve 13 Seal mechanism 15 Machine frame 2 Heat pump 20 Heat pump Unit 21 Condenser 22 Expansion valve 23 Evaporator 24 Compressor 25 Vacuum tank 26 Compressor 3 Compressor 4 Deodorizing furnace 40 Combustion cylinder 41 Burner 42 Air inlet 43 Exhaust Port 5 Dust collector 6 Dehumidifier 60 Housing 61 Cooling pipe 62 Air supply port 63 Exhaust port 64 Drain port 7 Heat exchanger 8 Heat exchanger 9 Heat exchanger A Outside air D1 Drain D2 Drain D3 Drain D4 Drain F Drying equipment G1 Exhaust gas G2 Deodorized exhaust gas M0 Sludge M1 Dry product S1 Steam S2 Steam W Water W1 Low temperature drainage

Claims (7)

  A drier and an apparatus for supplying a heating medium to the drier are provided, and a dried product can be obtained by heating the object to be processed supplied to the drier. In a drying facility, steam is generated by a heat pump unit using a low-temperature heat source discharged from the dryer and / or peripheral devices, and heat in the steam is supplied to the dryer directly or indirectly. A drying facility characterized by being configured to be able to perform a drying process on a workpiece by acting on the workpiece.   The dryer is provided with a multi-tube heating tube in a main body shell, and the multi-tube heating tube is rotated while a heating medium is passed through the multi-tube heating tube, while the object to be processed is retained in the main body shell. A conductive heat transfer dryer configured to contact a tube heating tube to dry an object to be processed, and configured to use steam generated by the heat pump as the heating medium. The drying equipment according to claim 1.   The dryer is a band-type dryer configured such that drying is performed in direct contact with a heating medium when an object to be processed moves on a track of a net conveyor disposed in a drying chamber, The drying according to claim 1, wherein steam generated by a heat pump is used as a heat source for a heat exchanger, and outside air heated by the heat exchanger is used as the heating medium. Facility.   The dryer is a flow-down dryer configured such that drying is performed by direct contact of a heating medium with an object flowing down in a drying chamber, and heat exchange is performed on the steam generated by the heat pump. The drying equipment according to claim 1, wherein the drying equipment is configured to be used as a heat source for an oven and the outside air heated by the heat exchanger is used as the heating medium.   The dryer is a rotary aeration dryer configured so that a heating medium is in direct contact with a workpiece to be scraped up in the rotating direction of the drum in the rotating drum, and drying is performed. The drying equipment according to claim 1, wherein the generated steam is used as a heat source for a heat exchanger, and the outside air heated by the heat exchanger is used as the heating medium.   6. The drying facility according to claim 1, wherein the heat pump is a heat pump unit including a condenser, an expansion valve, an evaporator, and a compressor.   6. The drying equipment according to claim 1, wherein the heat pump comprises a vacuum tank and a compressor.

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