JPH08280367A - Utilization of hot effluent from retort and system therefor - Google Patents

Abstract

PURPOSE: To provide the subject system enabling necessary mechanical power to be significantly reduced by utilizing, as a heat source, hot effluent changing in a time series fashion within the temperature range between 40 and 70 deg.C, along with enabling the highly accurate control of cooling water for the retort. CONSTITUTION: Hot effluent discharged from a retort 1 is introduced as the heat source water 2A for an absorption or adsorption refrigerating machine (hereafter, referred to an adsorption refrigerating machine 2, etc.), and the heat-deprived hot water after use as the heat source water 2A is subjected to atmospheric heat dissipation through an evaporative condenser 3 and then introduced into the cooling side 2B of the adsorption refrigerating machine 2, etc., to generate temperature-controlled cooling water, which is then introduced into the retort 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of using hot waste water in a sterilization system using a retort kettle and the system thereof, and in particular, uses hot waste water discharged from the retort kettle in a closed cycle during a cooling step after a heating step. The present invention relates to a method of using warm waste water and its system.

[0002]

2. Description of the Related Art Conventionally, a retort has been used as a sterilization system for beverage cans, hermetically sealed foods in which flexible packaging is filled with foods, cans and bottled foods (hereinafter collectively referred to as sterilized objects). Known sterilization systems are well known.

In this type of sterilization system, after a sterilized object such as a beverage can is housed in a retort (cooking sterilization tank) in multiple stages, the sterilized system is pressurized by compressed air (equal pressure control) hot water storage tank. Further, hot water of about 120 ° C. is supplied, and while heating the inside of the retort so that the object to be heated is immersed in the hot water, heat sterilization of about 120 ° C. is performed. After the heat sterilization, steam and / or air is blown into the retort to discharge hot water. After that, the cooling water is introduced into the retort by a shower or other means to cool the object to be sterilized, but from the environmental point of view, the warm waste water after cooling the object to be sterilized is again closed cycle. It is preferable to cool it to about 25 to 30 ° C. and reuse it.

FIG. 3 shows a system flow chart of such a closed cycle, in which the hot wastewater discharged from the retort 1 is primarily cooled to around 28 to 35 ° C. by the evaporator 51 which is in thermal contact with the outside air, and then the compression refrigerator 52. By this, secondary cooling is performed to a controlled temperature of around 25 to 30 ° C., and the cooling water can be introduced into the retort 1 again. Incidentally, reference numeral 53 in the figure denotes a cooling tower, which functions as a condenser for the refrigerant.

[0005]

However, in the above-mentioned conventional system, there is a drawback that the required power becomes large due to the constitution using the compression type refrigerator and the running cost unnecessarily increases.

In order to solve such a drawback, it is conceivable to use an absorption type or adsorption type refrigerator, but an absorption type or adsorption type refrigerator requires heat source water of about 50 to 85 ° C., while a retort is required. The hot drainage from 1 can obtain a heat source of around 70 ° C at the beginning of the cooling process,
At the end of the cooling process, the temperature drops to around 40 ° C, and the absorption type or adsorption type refrigerator cannot be effectively used.

In view of the drawbacks of the prior art, the present invention is
A method of using warm wastewater in a retort kettle that enables effective control of the cooling water supplied to the retort 1 with a significant reduction in required power by effectively utilizing the warm wastewater that changes in time series from 0 to 70 ° C as a heat source. To provide that system.

[0008]

The present invention, as shown in FIG. 1, is a heat source water for an absorption type or adsorption type refrigerator (hereinafter referred to as an adsorption type refrigerator 2 etc.) of hot waste water discharged from a retort 1. After being introduced as 2A, the heat-removed hot water that has been used as the heat source water 2A is radiated to the atmosphere by the evaporator 3, and the radiated radiated water is cooled to the cooling side 2B of the adsorption refrigerator 2 or the like.
Is introduced into the retort 1 to generate temperature-controlled cooling water, and the cooling water is introduced into the retort 1.

That is, the heat-deprived hot water after being used as the heat source water 2A of the adsorption refrigerator 2 or the like is 40 ° C. or more on average, compared to a temperature around 25 to 30 ° C. which is suitable as the cooling water for the retort 1. Even if an object having a temperature difference of around 15 ° C. or more is directly introduced into the cooling side 2B of the adsorption refrigerator 2, the temperature-controlled cooling water cannot be accurately generated. Therefore, the present invention does not directly introduce the hot water having such a temperature difference into the cooling side 2B of the adsorption type refrigerator 2 but uses the heat-removing hot water of about 40 to 45 ° C. after use as the heat source water 2A by the evaporator 3. After radiating heat to the atmosphere to reduce the temperature to around 28 to 35 ° C, the facility water around 28 to 35 ° C is introduced into the cooling side 2B of the adsorption refrigerator 2 or the like to generate cooling water around 25 to 30 ° C. I'm trying.

Therefore, according to the present invention, the adsorption refrigerator 2
Since the cooling temperature difference between the two is only 2 to several degrees Celsius, accurate temperature control is possible. However, even in such a configuration, since the hot drainage water from the retort 1 changes in time series at 40 to 70 ° C. on the heat source water side 2A of the adsorption refrigerator 2, even a device for effectively using the hot drainage as a heat source is provided. Is not considered. In this case, the tank 6 is provided on the heat source water 2A introduction side of the adsorption refrigerator 2 and the heat source water 2A introduced to the adsorption refrigerator 2 by averaging the warm waste water temperature of 40 to 70 ° C from the retort 1 is introduced. The temperature should be maintained above 50 ° C.

Further, according to the present invention, the temperature discharged from the retort 1 is bypassed by bypassing between the discharge side of the retort 1 and the heat-removed hot water that has been used as the heat source water 2A of the adsorption refrigerator 2 or the like. When the waste water is at a predetermined temperature (for example, 50 ° C. or higher, preferably 60 ° C. or higher), the warm waste water is used as the heat source water 2A of the adsorption refrigerator 2 and the warm waste water discharged from the retort 1 has a predetermined temperature. When the temperature falls below the level, it is supplied to the suction side of the evaporator 3 by using the bypass passage 10 and radiated to the atmosphere by the evaporator 3 to 28 to 35 ° C.
By reducing back and forth, adsorption refrigerator 2
Can be introduced to the cooling side 2B.

In this case, a plurality of retorts 1 are provided, and the cooling process is performed with a time difference, for example, 60
High-temperature hot drainage of ℃ or more and low-temperature hot drainage of 60 ℃ or less can be discharged in parallel, and the hot drainage of multiple temperatures is selected to flow to the bypass passage 10 side and the heat source water side 2A The cooling water supplied to the retort 1 can be controlled efficiently and with high temperature accuracy without stopping the operation of the rotary refrigerator 2.

Further, the low-temperature hot drainage water from the bypass passage 10 and the heat-removed hot water that has been used as the heat source water 2A are not supplied to the evaporator 3 individually, but both are temporarily stored and mixed in the tank 6 to average the temperature. After that, it is better to supply it to the evaporator 3.

Also, on the discharge side of the evaporator 3, the radiated water is not directly introduced into the cooling side 2B of the adsorption type refrigerator 2 or the like, but is stored in the tank 7 so that the temperature can be averaged and the tank 7 can be stored. When the cooling water discharge side of the adsorption refrigerator 2 or the like is bypassed 19 to eliminate the need for cooling water such as when the retort 1 side is in the hot water sterilization process, or when the required cooling water flow rate decreases. It is preferable to return the cooling water discharged from the adsorption refrigerator 2 or the like to the tank 7 side.

As a system configuration of such a retort warm wastewater utilization method, the first passage 11 for guiding the warm wastewater discharged from the retort 1 to the heat source water side 2A of the adsorption refrigerator 2 or the like.
And the heat-removed hot water after being used as the heat source water 2A
The second passage 12 leading to the side, and the third passage for introducing the facility water radiated to the atmosphere to the cooling side 2B of the adsorption refrigerator 2 or the like.
And a fourth passage 14 for introducing the cooling water generated from the cooling side 2B of the refrigerator or the like to the retort 1 side.
It is characterized in that a first bypass passage 10 is provided, which bypasses the first passage 11 via the switching valves 15A and 15B and communicates with the second passage 12 side.

More specifically, the retort 1 is provided with a plurality of the retorts 1 having the first to the fourth passages 11 to 14 and performing a cooling process with a time difference,
In addition, switching valves 15A and 15B are provided on the respective retort 1 discharge sides, and one outlet side of both switching valves 15A and 15B is connected to the first passage 11 and the other outlet side is connected to the second passage 12 side. It is characterized in that a first bypass passage 10 for communication is provided.

In this case, the first tank 6 is provided at the connecting portion of the second passage 12 with the first bypass passage 10 so that the low temperature hot drainage from the bypass passage 10 and the heat removal after use as the heat source water 2A. It is preferable that hot water is once stored and mixed in the tank 6 to average the temperature and then supplied to the evaporator 3.

Further, a second tank 7 is provided in the middle of the third passage 13, and a second bypass passage 19 for bypassing the second tank 7 and the middle of the fourth passage 14 is provided, and a fourth passage is provided. It is preferable that the cooling water discharged from the adsorption refrigerating machine 2 and the like introduced on the 14th side can be returned to the 2nd tank 7 side. Furthermore, once the cold water temperature drops for some reason, the discharge side temperature of the retort kettle may drop to the heat source temperature of the adsorption refrigerator due to the constant heat capacity of the retort kettle, resulting in an inoperable operation. In order to avoid this, a third bypass passage that bypasses between the discharge side of the evaporator and the retort introduction passage side is provided, and when the cooling water temperature from the cooling water discharged from the adsorption refrigerator 2 drops below a certain temperature, It is advisable to introduce the facility water discharged from the evaporator directly into the retort.

[0019]

Embodiments of the present invention will be described in detail below with reference to FIGS. However, unless otherwise specified, the dimensions, materials, shapes, relative positions, etc. of the components described in this embodiment are not intended to limit the scope of the present invention thereto, but merely illustrative examples. Nothing more. FIG. 1 shows a retort 1 hot drainage utilization system showing a basic configuration of the present invention, and in this embodiment, it is particularly preferably applied to a hot drainage utilization system in a cooling process after hot water sterilization of canned coffee etc. . In the present embodiment, 1 is a retort for accommodating the canned coffee and performing hot water sterilization and cooling as shown in the prior art, 2 is an adsorption refrigerator, which generally uses water, alcohol or the like as a refrigerant, A plurality of adsorbent heat exchangers (not shown) accommodating solid adsorbents such as silica gel, zeolite, activated carbon, activated alumina, etc. are installed side by side, and a heat source for regenerating the warm waste water discharged from the retort 1 and a cooling tower are provided. Four
While further supplying the radiated radiated water to the heat source water side 2A and the cooling water side of the heat exchanger, adsorption and desorption of the refrigerant to and from the adsorbent are repeated, and the evaporation heat of the refrigerant is used to radiate heat. It is configured to cool water. 4 is a cooling tower,
The refrigerant evaporated from the cooling side 2B is indirectly contacted with the outside air to condense, and the heat of adsorption in the adsorbent heat exchanger is radiated to the atmosphere. As described above, the evaporator 3 is for radiating heat to the atmosphere of the heat-removed hot water that has been used as the heat source water 2A in the adsorption refrigerator 2.

In each of the devices, the first passage 11 for guiding the warm waste water discharged from the retort 1 to the heat source water side 2A of the adsorption refrigerator 2 and the heat-removed hot water after being used as the heat source water side 2A. The second passage 12 that leads to the side of the evaporator 3 and the cooling side 2B of the adsorption refrigerating machine 2 that transfers the facility water radiated to the atmosphere
Is connected to a third passage 13 which is introduced into the retort 1 side with a third passage 13 which is introduced into the retort 1 side, and the first passage 11 The heat source tank 5 is provided on the heat source water 2A introduction side of the adsorption refrigerating machine 2 in order to average the temperature of the hot waste water from the retort 1. And according to such an embodiment, the retort 1
The warm drainage from around 40-70 ℃ is the first
After the hot drainage water of about 50 to 65 ° C. is introduced into the adsorption type refrigerator 2 as the heat source water 2A while being stored in the heat source tank 5 through the passage 11 and averaging the hot drainage temperature, the heat source water 2
After being used as A, the heat-removed hot water that has dropped to around 40 to 42 ° C. is introduced into the evaporator 3 through the second passage 12 and radiates heat to the atmosphere.

Then, the facility water, which has been lowered to 28 to 30 ° C. by the heat radiation to the atmosphere, is introduced into the cooling side 2B of the adsorption type refrigerator 2 to supply the cooling water whose temperature is controlled to, for example, 26 ° C. between 25 and 28 ° C. By generating and introducing the cooling water into the retort 1, it becomes possible to reuse the warm waste water by the closed cycle using the adsorption refrigerator 2. Therefore, in this embodiment, the heat source tank 5 averages the temperature of the hot water discharged from the retort 1 that changes in time series from 40 to 70 ° C. to a temperature at which it can be used as the heat source of the adsorption refrigerator 2. After the heat-removed warm water of about 40 to 45 ° C after being used as 2A is radiated to the atmosphere by the evaporator 3 and reduced to 28 to 35 ° C, preferably to about 28 to 30 ° C, the radiated water of about 28 to 30 ° C Is introduced into the cooling side 2B of the adsorption refrigerator 2 to generate cooling water whose temperature is controlled to 25 to 30 ° C, specifically 26 ° C.

The second embodiment shown in FIG. 2 is an adsorption refrigerator 2.
This is intended to make more efficient use of warm waste water as the heat source water 2A and more precise control of cooling water. The difference from the above embodiment will be mainly described below. The two retorts 1 are provided in parallel with each other 1A and 1B, and the cooling process is performed with a time lag, so that high temperature hot drainage of 60 ° C. or more and 60
Low temperature warm water below ℃ can be discharged alternately in parallel. Two-way valves 20A, 20B, 21A, 21 are provided on the inlet side and the outlet side of the retorts 1A, 1B, respectively.
B (open / close valve) is connected. 20A and 20B are normally on-off valves, but at least 1 when the pump is turned on and off
In some cases, one valve may be substituted.

Further, the two-way valve 2 located on the discharge side of the retort 1
On the outlet side of 1A, 21B, temperature sensing type switching valves 15A, 15B for sensing the temperature of the hot waste water on the inlet side and switching the discharge direction on the outlet side are provided, and one outlet side of the switching valves 15A, 15B is provided. The first passage 11 is assembled and the other outlets are assembled and connected to the first bypass passage 10. A heat source tank 5 is provided on the first passage 11 on the heat source water 2A introduction side of the adsorption refrigerator 2. Further, the bypass passage 10 is connected to the first tank 6 interposed in the middle of the second passage 12,
The low-temperature hot drainage from the bypass passage 10 and the heat-removed hot water after being used as the heat source water 2A are once stored and mixed in the first tank 6 to average the temperature and then supplied to the evaporator 3. .

A plurality of evaporators 3 are provided 3A and 3B, which are connected in series to enable effective heat dissipation and temperature reduction.

A second tank 7 is provided in the middle of the third passage 13 on the discharge side of the evaporators 3A and 3B, and facility water is stored in the second tank 7 to average the temperature. Also, Evacon 3A,
3B discharge side and three-way valve 22 outlet side retort introduction passage 20
Third bypass passage 71 for bypassing between the A and 20B sides
Is provided and is connected to the fourth passage 14 via the three-way valve 72. Further, the tank 7 is connected to the fourth passage 14 through a bypass passage 19 and a three-way valve 22, and the adsorption type refrigerator 2 introduced to the fourth passage 14 side by the opening degree of the three-way valve 22 or switching control. The discharge cooling water of No. 2 can be returned to the second tank 7 side. Therefore, the three tank capacities are in the order of second tank 7> first tank 6> heat source tank 5 due to the difference in their purposes. Pumps P ₁ ... Are provided in the passages so that water flows in the directions of the arrows.

Next, the operation of this embodiment will be described. The two retorts 1 are configured to perform a cooling process with a time lag, for example, high temperature hot drainage of 60 ° C to 70 ° C and low temperature hot drainage of 40 ° C to 60 ° C are drained in parallel. And in the temperature sensing switching valves 15A and 15B,
The temperature of the hot waste water discharged from each of the retorts 1A and 1B is detected, and the high temperature hot waste water of 60 ° C. or higher is discharged into the first passage 1
On the 1st side, the low temperature hot drainage of 60 ° C or less is the first bypass passage 1
It flows to the 0 side and is stored in the heat source tank 5 and the first tank 6, respectively.

On the heat source tank 5 side, the hot drainage temperature is averaged by storing hot drainage at a temperature of 60 ° C. to 70 ° C.
It is possible to obtain 2 A of stable heat source water at 5 ° C. Then, after introducing the warm waste water of about 65 ° C. into the adsorption refrigerator 2 as the heat source water 2A, 40 to 5 after use as the heat source water 2A
The heat-removed hot water that has dropped to around 0 ° C. is stored in the first tank 6. Further, the low temperature hot water of 40 to 60 ° C. from the bypass passage 10 is also stored in the first tank 6, so that the hot water of 40 to 50 ° C. is mixed and stored in the first tank 6. .

The stored warm water, for example 42 ° C.
The hot water before and after is supplied to the Evacon 3A connected in series,
Facility water cooled to around 29 ° C. is obtained with the evaporators 3A and 3B. Further, also on the discharge side of the evaporator 3B, the facility water is not directly introduced to the cooling side 2B of the adsorption refrigerator 2 but is stored in the second tank 7 so that the temperature is averaged.

Then, by introducing facility water of about 29 ° C. from the tank 7 to the cooling side 2B of the adsorption refrigerator 2, 2
By generating cooling water whose temperature is controlled at around 6 ° C. and introducing the cooling water into the retorts 1A and 1B, it is possible to reuse the warm waste water by the closed cycle using the adsorption refrigerator 2.

When the cooling water is unnecessary or the required cooling water flow rate is reduced, such as when the retort 1A, 1B side is in the hot water sterilization step, the outlet switching or opening of the three-way valve is performed. By adjustment, the cooling water discharged from the adsorption refrigerator 2 is returned to the tank 7 side via the bypass 19. Furthermore, once the cold water temperature drops for some reason, the discharge side temperature of the retort kettle may drop to the heat source temperature of the adsorption refrigerator due to the constant heat capacity of the retort kettle, resulting in an inoperable operation. In order to avoid this, a third bypass passage 71 that bypasses between the discharge sides of the evaporators 3A, 3B and the outlet side of the three-way valve 22 and the retort introduction passages 20A, 20B is provided, and the fourth passage 14 is provided via the three-way valve 72. By connecting the three-way valve 72 when the cooling water temperature from the discharge cooling water of the adsorption refrigerator 2 drops below a certain temperature, the three-way valve 72 is switched.
The facility water discharged from A and 3B is bypassed directly to the retort introduction passages 20A and 20B side.

[0031]

As described above, according to the present invention, 40
~ 70 ℃ The hot wastewater that changes in time series is effectively used as a heat source to significantly reduce the required power, and the method and system for using the hot wastewater in the retort kettle capable of accurately controlling the cooling water supplied to the retort. Can be provided.

[Brief description of drawings]

FIG. 1 is a system flow diagram of a retort hot wastewater utilization system showing a basic configuration of the present invention.

FIG. 2 is a system flow diagram of a retort warm wastewater utilization system showing another embodiment of the present invention.

FIG. 3 shows a system flow diagram of a conventional retort warm wastewater utilization system in a closed cycle.

[Explanation of Codes] 1, 1A, 1B Retort 2 Adsorption refrigerator 2A Heat source water side 2B Cooling side 3, 3A, 3B Evacon 5 Heat source tank 6 First tank 7 Second tank 10 First bypass passage 11 1st passage 12 2nd passage 13 3rd passage 14 4th passage 15A, 15B switching valve 19 2nd bypass passage 71 3rd bypass passage

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor ▲ Yes ▼ Akira Shima 2-13-1, Botan, Koto-ku, Tokyo Inside Maekawa Co., Ltd. (72) Inventor Fujio Komatsu 2-13, Botan, Koto-ku, Tokyo No. 1 Stock Company Maekawa Works

Claims (13)

[Claims] 1. A method for utilizing hot water discharged from a retort, wherein the hot water discharged from the retort kettle after cooling the object to be sterilized is cooled by a refrigerator and mainly reused by the closed cycle. After introducing the warmed wastewater as heat source water of an absorption or adsorption type refrigerator (hereinafter referred to as an adsorption type refrigerator), the desorbed hot water after being used as the heat source water is radiated to the atmosphere by an evaporator and the heat is radiated to the atmosphere. The retort warm wastewater utilization method, characterized in that the generated facility water is introduced into a cooling side of the adsorption refrigerator or the like to generate temperature-controlled cooling water, and the cooling water is introduced into a retort. 2. The hot drainage water discharged from the retort is bypassed between the discharge side of the retort and the heat removal hot water after being used as a heat source water for an adsorption refrigerator, etc., when the hot drainage water is at a predetermined temperature or higher. Is used as a heat source water for an adsorption refrigerator, etc., and when the hot waste water discharged from the retort drops below a predetermined temperature, it is supplied to the intake side of the evaporator using the bypass passage, and heat is released to the atmosphere by the evaporator. The method of using retort warm waste water according to claim 1, characterized in that the facility water is obtained by 3. The warm waste water discharged from the retort is about 50.
C., preferably at 60.degree. C. or higher, the hot drainage is used as heat source water for an adsorption refrigerator or the like, and when the hot drainage is about 50.degree. After being used as water, it is supplied to the evaporator suction side together with the heat-removed hot water of about 40 to 45 ° C., the heat of the atmosphere is radiated by the evaporator to reduce both of the hot water to about 28 to 35 ° C., and then the 28 to 35 ° C. The retort warm wastewater utilization method according to claim 2, wherein the facility water before and after is introduced into the cooling side of the adsorption refrigerator or the like to generate the coolant around 25 to 30 ° C. 4. A plurality of the retorts are provided, and by performing a cooling process with a time lag, high temperature hot drainage above a predetermined temperature and low temperature warm drainage below a predetermined temperature are discharged in parallel, and the parallel discharge is performed. The method of utilizing hot water of retort according to claim 2, wherein the hot water of multiple temperatures is selectively flowed to the bypass passage side and the heat source water side. 5. The low-temperature hot drainage from the bypass passage and the heat-deprived hot water after being used as a heat source water are once stored and mixed in a tank to average the temperature, and then supplied to the evaporator. Item 2. Retort hot water drainage method 6. The method for utilizing hot water of retort according to claim 1, wherein a heat source tank is provided on the heat source water introducing side of the adsorption refrigerator to average the temperature of hot water discharged from the retort. 7. On the discharge side of the evaporator, the facility water is stored in a tank to equalize the temperature, and the tank and the cooling water discharge side of the adsorption refrigerating machine are bypassed so that the adsorption refrigerating machine or the like is used. 3. The method for utilizing retort warm waste water according to claim 2, wherein the discharged cooling water from the tank is returned to and returned from the tank side. 8. The facility water discharged from the evaporator is bypassed between the discharge side of the evaporator and the retort introduction passage when the temperature of the cooling water discharged from the adsorption refrigerator 2 drops below a certain temperature. The method of using hot retort wastewater according to claim 7, wherein the retort is directly introduced into the retort. 9. In a retort warm wastewater utilization system, wherein the warm wastewater discharged from the retort after cooling the sterilized object is cooled by a refrigerator and mainly reuses the warm wastewater in a closed cycle. A first passage for guiding the warm waste water to the heat source side of the adsorption refrigerator,
A second passage for guiding the heat-deprived hot water after being used as the heat source water to the evaporator side, a third passage for introducing the radiated radiated water into the cooling side of the adsorption refrigerator or the like, and a refrigerator. A first bypass for introducing cooling water generated from the cooling side to the retort side, the first passage bypassing the first passage via a switching valve and communicating with the second passage side. Retort hot water drainage system characterized by having a channel 10. In a retort warm wastewater utilization system, wherein the warm wastewater after cooling the sterilization target discharged from the retort is cooled by a refrigerator and mainly reuses the warm wastewater in a closed cycle. The first passage for guiding the warm waste water to the heat source side of the adsorption refrigerator, the second passage for guiding the heat-removed hot water used as the heat source water to the evaporator side, and the facility water radiated to the atmosphere. It has a third passage introduced into the cooling side of the adsorption refrigerator or the like and a fourth passage introduced into the retort side of cooling water generated from the cooling side of the refrigerator or the like, and cools with a time difference. A plurality of the retorts for performing the steps are provided, and a switching valve is provided on each retort discharge side, one outlet side of the two switching valves is the first passage, and another outlet side is the second passage side. The first port to communicate with Retort hot water drainage system characterized by having an ipas road 10. 11. A first tank is provided at a connecting portion of the second passage with the first bypass passage, and the low temperature hot drainage water from the bypass passage and the heat removal hot water after being used as heat source water are temporarily stored in the tank. 10. The retort hot wastewater utilization system according to claim 9, wherein the temperature is averaged by mixing in a reservoir and then supplied to the evaporator. 12. A second tank is provided in the middle of the third passage, and a second bypass passage for bypassing the second tank and the middle of the fourth passage is provided and introduced to the side of the fourth passage. 10. The retort hot water drainage utilization system according to claim 9, wherein the cooling water discharged from the adsorption refrigerator or the like can be returned to the second tank side. 13. A third bypass passage for bypassing between the discharge side of the evaporator and the retort introduction passage side is provided, and when the temperature of the cooling water from the cooling water discharged from the adsorption refrigerator 2 drops below a certain temperature, 13. The retort warm wastewater utilization system according to claim 12, wherein the facility water discharged from the evaporator is directly introduced into the retort.