Chemical waste gas resource recycling equipment

Abstract

The utility model relates to chemical waste gas resource recycling equipment, and relates to the technical field of gas treatment equipment.The chemical waste gas resource recycling equipment comprises an adsorption module, a condensation separation metering module, a pretreatment module, a steam pipeline, an induced draft fan and an exhaust funnel which are coupled, and three adsorption tanks are arranged in the adsorption module and communicate with one another through pipelines; every two of the three adsorption tanks are connected in series, during operation, the two adsorption tanks connected in series are connected into a pipeline, the rest of the adsorption tanks are closed, and the steam pipeline and the condensation separation metering module are respectively communicated with the three adsorption tanks through pipelines. The waste gas treatment device has the advantages that continuous operation of adsorption operation is achieved, the waste gas recovery efficiency is improved, the waste gas adsorption effect is improved, and the effect that the waste gas reaches the standard and is discharged is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of gas processing equipment, and in particular to a chemical waste gas resource recovery equipment. Background Art

[0002] Hexamethyldisiloxane is an important organosilicon compound, widely used in electronics, medicine, chemical industry and other fields. Hexamethyldisiloxane is used as a capping agent, cleaning agent and demoulding agent, mainly in organic chemical and pharmaceutical production; as a hydrophobic agent, insulating material and moisture-proof agent, mainly used in instrumentation circulating coolant and manufacturing various organosilicon products; also used in silicone rubber, medicine, gas chromatography stationary liquid, analytical reagents, etc. However, a large amount of waste gas is generated during the production process, containing hexamethyldisiloxane, a small amount of ethanol and other harmful substances, resulting in waste of resources and pollution of the atmospheric environment.

[0003] At present, the main treatment technologies for this type of production waste gas include adsorption, combustion, biological, plasma, etc. Among them, the adsorption method is the most widely used in the treatment of this type of waste gas. The adsorption method usually has limited adsorption capacity, easy saturation, short activated carbon replacement cycle, low solvent recovery rate, increased hazardous waste treatment volume, easy to exceed the emission standard, and poor technical and economic performance. Therefore, for this type of high-concentration hexamethyldisiloxane production waste gas, how to optimize the system, reduce the concentration of non-methane total hydrocarbons, and improve the recovery rate of hexamethyldisiloxane is a difficult problem that needs to be solved in the industry. Utility Model Content

[0004] In order to solve the problems existing in the prior art of limited adsorption capacity of existing waste gas recovery systems, easy saturation, short activated carbon replacement cycle, low solvent recovery rate, increased hazardous waste treatment volume, easy emission exceeding standards, and poor technical and economic performance, the present application provides a chemical waste gas resource recovery equipment.

[0005] A chemical waste gas resource recovery equipment provided in the present application adopts the following technical solution: a chemical waste gas resource recovery equipment, comprising a coupled adsorption module, a condensation separation metering module, a pretreatment module, a steam pipeline, an induced draft fan and an exhaust pipe, at least three adsorption tanks are arranged in the adsorption module, the three adsorption tanks are connected by pipelines, at least three adsorption tanks are connected in series in pairs and during operation, two of the adsorption tanks in series are connected to the pipeline, and the remaining adsorption tanks are closed, the steam pipeline and the condensation separation metering module are respectively connected to the at least three adsorption tanks by pipelines.

[0006] By adopting the above technical scheme, the exhaust gas is transported to two adsorption tanks connected in series for adsorption treatment after being treated by the pretreatment module. The exhaust gas enters the two adsorption tanks in turn for treatment, and the treated exhaust gas is discharged through the induced draft fan and the exhaust pipe. During the treatment process of the two adsorption tanks, the other adsorption tank is in a closed state. When one of the two working adsorption tanks is saturated, the saturated adsorption tank is closed, and the closed adsorption tank is connected in series with the working adsorption tank to allow the adsorption operation to continue. At the same time, steam is input through the steam pipeline during the saturated adsorption, and desorption is carried out by steam. The desorbed steam is transported to the condensation separation metering module for condensation separation and storage, and this cycle is repeated to achieve continuous operation of the recovery system.

[0007] Optionally, the adsorption tank includes a first adsorption tank, a second adsorption tank and a third adsorption tank, the pretreatment module is connected to the first adsorption tank and one end of the third adsorption tank respectively through the exhaust gas delivery pipe, one end of the second adsorption tank is connected to the inlet of the induced draft fan through the exhaust gas emission pipe, one end of the first adsorption tank is connected to one end of the second adsorption tank through a pipe, one end of the third adsorption tank is connected to the second adsorption tank and one end of the first adsorption tank through a first branch pipe, the first branch pipe is connected to the exhaust gas emission pipe, and one end of the third adsorption tank is connected to the exhaust gas emission pipe through the second branch pipe.

[0008] By adopting the above technical scheme, when the third adsorption tank is closed, the first adsorption tank is connected in series with the second adsorption tank, and the exhaust gas is transported to the first adsorption tank through the exhaust gas conveying pipeline, and after being adsorbed by the first adsorption tank, it is transported to the second adsorption tank for adsorption again, and after being adsorbed by the second adsorption tank, it is discharged through the exhaust gas emission pipeline; when the second adsorption tank is closed, the third adsorption tank is connected in series with the first adsorption tank through the first branch pipe, and the exhaust gas is transported to the first adsorption tank through the exhaust gas conveying pipeline, and after being adsorbed by the first adsorption tank, it is transported to the third adsorption tank through the first branch pipe for adsorption again, and after being adsorbed by the third adsorption tank, the exhaust gas is transported to the exhaust gas emission pipeline through the second branch pipe for discharge; when the first adsorption tank is closed, the third adsorption tank is connected in series with the second adsorption tank through the second branch pipe, and the exhaust gas is transported to the third adsorption tank through the exhaust gas conveying pipeline, and after being adsorbed by the third adsorption tank, it is transported to the second adsorption tank through the second branch pipe for adsorption again, and after being adsorbed by the second adsorption tank, it is transported to the exhaust gas emission pipeline through the first branch pipe for discharge.

[0009] Optionally, the induced draft fan outlet is respectively connected to the first adsorption tank, the second adsorption tank and one end of the third adsorption tank through a second circulation pipeline, and a surface cooler is provided in the second circulation pipeline.

[0010] By adopting the above technical scheme, the waste gas purified by adsorption is transported to the second circulation pipeline through the induced draft fan, and the surface cooler in the second circulation pipeline cools the adsorbed waste gas. The adsorbed waste gas is transported to the first adsorption tank or the second adsorption tank or the third adsorption tank that is undergoing adsorption operation through the second circulation pipeline, and is mixed with the waste gas in the adsorption tank, thereby reducing the concentration and temperature of the waste gas in the adsorption tank and improving the adsorption effect.

[0011] Optionally, the other ends of the first adsorption tank, the second adsorption tank and the third adsorption tank are connected to the inlet of the pretreatment module through a first circulation pipeline.

[0012] By adopting the above technical solution, the exhaust gas in the first adsorption tank, the second adsorption tank or the third adsorption tank is transported to the inlet of the pretreatment module through the first circulation pipeline to mix with the exhaust gas, thereby reducing the concentration and temperature of the exhaust gas entering the treatment module and improving the pretreatment effect of the pretreatment module on the exhaust gas.

[0013] Optionally, the first adsorption tank, the second adsorption tank and the third adsorption tank are connected to the steam pipeline at the top, and the first adsorption tank, the second adsorption tank and the third adsorption tank are connected to the condensation separation metering module at the bottom through a steam exhaust pipe and a condensate exhaust pipe.

[0014] By adopting the above technical solution, when the adsorption in the first adsorption tank, the second adsorption tank or the third adsorption tank is saturated and closed, the desorption steam enters the adsorption tank through the steam pipeline to desorb the adsorption medium inside the adsorption tank. The desorbed steam is transported to the condensation separation metering module through the steam discharge pipe to condense into condensate and store for metering. The condensate generated during the desorption process is transported to the condensation separation metering module through the condensate discharge pipe to store for metering.

[0015] Optionally, the condensation separation metering module includes a first condenser, a second condenser and a separation storage tank, the steam exhaust pipe is connected to the first condenser inlet, the first condenser outlet and the condensate exhaust pipe are connected to the second condenser inlet, and the second condenser outlet is connected to the separation storage tank through a pipe.

[0016] By adopting the above technical scheme, the desorbed steam is transported to the first condenser through the steam discharge pipe, condensed into condensate in the first condenser, the condensate mixed with steam is transported to the second condenser again, the condensate generated in the adsorption tank is transported to the second condenser through the condensate discharge pipe, mixed with steam in the second condenser to condense the steam again, and the condensation effect is improved by setting a two-stage condenser. The condensed condensate is transported to the separation storage tank, which separates the water-insoluble organic solvent from water, and the separated organic solvent is stored and measured.

[0017] Optionally, the pretreatment module includes a washing tower, a waste gas inlet is arranged on one side of the bottom of the washing tower, and the top of the washing tower is connected to the waste gas conveying pipeline.

[0018] By adopting the above technical solution, the exhaust gas first enters the washing tower, and the particulate matter, high boiling matter, aerosol and sticky substances in the exhaust gas are removed by washing in the washing tower.

[0019] Optionally, a heat exchanger is provided above the interior of the washing tower, and the heat exchanger is connected to a cooling water pipeline.

[0020] By adopting the above technical solution, the heat exchanger is used to cool the exhaust gas after washing.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. In the present application, at least three groups of adsorption tanks are arranged, and the adsorption tanks are connected in series in pairs. When two adsorption tanks in series are performing adsorption operation, the remaining adsorption tanks are closed. When one of the adsorption tanks is saturated, the closed adsorption tank is connected to the pipeline for adsorption operation, and the saturated adsorption tank is closed and desorbed. There is no need to shut down the whole machine for desorption operation, which effectively realizes the continuous operation of adsorption operation, improves the efficiency of waste recovery, improves the adsorption effect of waste gas, and ensures that the waste gas meets the emission standards;

[0023] 2. In the present application, a first circulation pipeline and a second circulation pipeline are provided, and the adsorbed waste gas is transported to the pretreatment module or the adsorption tank again through the first circulation pipeline and the second circulation pipeline, and mixed with the waste gas in the pretreatment module or the adsorption tank, so as to reduce the concentration and temperature of the waste gas, improve the pretreatment and adsorption effect of the waste gas, and improve the treatment effect of the waste gas;

[0024] 3. In this application, the condenser adopts a series process. The steam enters the first-stage condenser after desorption, and a small amount of condensate at the bottom of the adsorption tank merges with the discharge liquid of the first-stage condenser and enters the second-stage condenser, thereby improving the condensation effect of the steam and improving the recovery rate of hexamethyldisiloxane in the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a system schematic diagram of a chemical waste gas resource recovery equipment in an embodiment of the present application.

[0026] Figure 2 This is a schematic diagram of the first operating state of a chemical waste gas resource recovery equipment in an embodiment of the present application.

[0027] Figure 3 This is a schematic diagram of the second operating state of a chemical waste gas resource recovery equipment in an embodiment of the present application.

[0028] Figure 4 This is a schematic diagram of the third operating state of a chemical waste gas resource recovery equipment in an embodiment of the present application.

[0029] Explanation of the reference numerals: 1. adsorption module; 11. surface cooler; 12. first adsorption tank; 13. second adsorption tank; 14. third adsorption tank; 15. exhaust gas conveying pipeline; 16. first branch pipe; 17. first circulation pipeline; 18. steam discharge pipeline; 19. condensate discharge pipeline; 110. second circulation pipeline; 111. exhaust gas discharge pipeline; 112. second branch pipe; 2. condensation separation and metering module; 21. first condenser; 22. second condenser; 23. separation storage tank; 3. pretreatment module; 31. washing tower; 32. heat exchanger; 4. steam pipeline; 5. induced draft fan; 6. exhaust chimney; 7. cooling water pipeline. DETAILED DESCRIPTION

[0030] The following is an explanation of the implementation of the present application by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0031] See also Figure 1-4 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions for the implementation of this application, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical content disclosed in this application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this application. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this application without substantially changing the technical content.

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] This embodiment discloses a chemical waste gas resource recovery equipment.

[0034] Reference Figure 1 , a chemical waste gas resource recovery equipment, including a coupled adsorption module 1, a condensation separation metering module 2, a pretreatment module 3, a steam pipeline 4, an induced draft fan 5 and an exhaust pipe 6;

[0035] The pretreatment module 3 includes a washing tower 31, an inlet is arranged at one side of the bottom of the washing tower 31, an exhaust gas delivery pipeline 15 is connected to the top of the washing tower 31, a heat exchanger 32 is arranged above the inside of the washing tower 31, and the heat exchanger 32 is connected to the cooling water pipeline 7;

[0036] The adsorption module 1 includes a first adsorption tank 12, a second adsorption tank 13 and a third adsorption tank 14. The right end openings of the first adsorption tank 12 and the third adsorption tank 14 are connected to the exhaust gas delivery pipeline 15. The left end opening of the first adsorption tank 12 is connected to the right end opening of the second adsorption tank 13 through a pipeline. The left end opening of the second adsorption tank 13 is connected to the induced draft fan 5 through the exhaust gas discharge pipeline 111. The right end opening of the third adsorption tank 14 is connected to a first branch pipe 16. The first branch pipe 16 is connected to the left end opening of the first adsorption tank 12 and the right end opening of the second adsorption tank 13. The first branch pipe 16 is connected to the exhaust gas discharge pipeline 111. The left end opening of the third adsorption tank 14 is connected to the exhaust gas discharge pipeline 111 through the second branch pipe 112.

[0037] The outlet of the induced draft fan 5 is connected to the left end openings of the first adsorption tank 12, the second adsorption tank 13 and the third adsorption tank 14 through the second circulation pipeline 110, and the surface cooler 11 is arranged in the second circulation pipeline 110. The right end openings of the first adsorption tank 12, the second adsorption tank 13 and the third adsorption tank 14 are connected to the opening on the bottom side of the washing tower 31 through the first circulation pipeline 17;

[0038] The steam pipeline 4 is connected to the top of the first adsorption tank 12, the second adsorption tank 13 and the third adsorption tank 14 respectively. The bottom of the first adsorption tank 12, the second adsorption tank 13 and the third adsorption tank 14 are connected to the condensation separation metering module 2 through the steam exhaust pipe 18 and the condensate exhaust pipe 19 respectively. The condensation separation metering module 2 includes a first condenser 21, a second condenser 22 and a separation storage tank 23. The steam exhaust pipe 18 is connected to the inlet of the first condenser 21, and the outlet of the first condenser 21 is connected to the inlet of the second condenser 22 through a pipe. The condensate exhaust pipe 19 is connected to the inlet of the second condenser 22, and the outlet of the second condenser 22 is connected to the separation storage tank 23 through a pipe.

[0039] The implementation principle of a chemical waste gas resource recovery equipment in this embodiment is:

[0040] Reference Figure 2When the third adsorption tank 14 is closed after adsorption saturation, the first adsorption tank 12 and the second adsorption tank 13 are connected in series, and the exhaust gas enters the washing tower 31 through the inlet of the washing tower 31 for washing to remove particulate matter, high boiling matter, aerosol and sticky substances in the exhaust gas. The washed exhaust gas is heat exchanged and cooled by the heat exchanger 32. The pre-treated exhaust gas is transported to the first adsorption tank 12 through the exhaust gas conveying pipeline 15. The activated carbon in the first adsorption tank 12 adsorbs the exhaust gas, and the exhaust gas adsorbed by the first adsorption tank 12 is then transported to the second adsorption tank. 13 is adsorbed again, and the adsorbed waste gas is transported to the induced draft fan 5 through the waste gas discharge pipe 111. The induced draft fan 5 transports the adsorbed waste gas to the second adsorption tank 13 and the first adsorption tank 12 through the second circulation pipe 110. The adsorbed waste gas is mixed with the waste gas in the second adsorption tank 13 and the first adsorption tank 12 to reduce the concentration and temperature of the waste gas in the second adsorption tank 13 and the first adsorption tank 12 to improve the adsorption effect. At the same time, the waste gas in the second adsorption tank 13 and the first adsorption tank 12 is further transported to the first circulation pipe 17. It is transported to the inlet on one side of the bottom of the washing tower 31 and mixed with the exhaust gas entering the washing tower 31 to reduce the concentration and temperature of the exhaust gas to improve the pretreatment effect of the exhaust gas. During the adsorption process of the second adsorption tank 13 and the first adsorption tank 12, the steam pipeline 4 transports desorption steam to the third adsorption tank 14, and the desorption steam desorbs the activated carbon in the third adsorption tank 14. The gas phase component after steam desorption is transported to the first condenser 21 through the steam discharge pipe 18. The first condenser 21 condenses the gas phase component to form a mixed solution of the gas phase component and the condensate, and the mixed solution is then transported to the second condenser 22. The condensate generated in the desorption process in the third adsorption tank 14 is transported to the second condenser 22 through the condensate discharge pipe 19. In the second condenser 22, the mixed solution is also mixed and condensed again to completely condense to form a condensate mixed with an organic solvent and water. The condensate is transported to the separation storage tank 23 through a pipeline. The separation storage tank 23 separates the organic solvent from the water and stores the organic solvent to achieve the recovery of hexamethyldisiloxane.

[0041] Reference Figure 3 When the second adsorption tank 13 is saturated and closed, the first adsorption tank 12 is connected in series with the third adsorption tank 14 through the first branch pipe 16. The exhaust gas enters the first adsorption tank 12 through the exhaust gas conveying pipe 15 and is adsorbed inside, and then is conveyed to the third adsorption tank 14 through the first branch pipe 16 for adsorption again. After adsorption by the third adsorption tank 14, it is conveyed to the exhaust gas discharge pipe 111 through the second branch pipe 112 for circulation. During the adsorption process of the first adsorption tank 12 and the third adsorption tank 14, the second adsorption tank 13 performs a desorption operation.

[0042] Reference Figure 4When the first adsorption tank 12 is closed due to adsorption saturation, the third adsorption tank 14 is connected to the left end opening of the second adsorption tank 13 through the second branch pipe 112, and the right end opening of the second adsorption tank 13 is connected to the exhaust gas discharge pipe 111 through the first branch pipe 16. The exhaust gas is transported to the third adsorption tank 14 through the exhaust gas transport pipe 15 for adsorption. The adsorbed exhaust gas is transported from the left end opening of the second adsorption tank 13 to the second adsorption tank 13 through the second branch pipe 112 for adsorption. The adsorbed exhaust gas is then transported to the exhaust gas discharge pipe 111 through the first branch pipe 16 for circulation. During the adsorption process of the second adsorption tank 13 and the third adsorption tank 14, the first adsorption tank 12 performs a desorption operation, thereby performing a cycle, thereby ensuring that there are always two adsorption tanks in series for adsorption operation, and the saturated adsorption tanks are desorbed at the same time, thereby realizing the continuous operation of the recovery device.

[0043] In summary, at least three groups of adsorption tanks are set in the present application, and the adsorption tanks are connected in series in pairs. When two adsorption tanks in series perform adsorption operations, the remaining adsorption tanks are closed. When one of the adsorption tanks is saturated, the closed adsorption tank is connected to the pipeline for adsorption operation, and the saturated adsorption tank is closed and desorbed. There is no need to shut down the entire machine for desorption operation, which effectively realizes the continuous operation of the adsorption operation, improves the efficiency of waste recovery, improves the adsorption effect of waste gas, and ensures that the waste gas meets the emission standards; in the present application, a first circulation pipeline and a second circulation pipeline are set, and the adsorbed waste gas is transported to the pretreatment module or the adsorption tank again through the first circulation pipeline and the second circulation pipeline, and mixed with the waste gas in the pretreatment module or the adsorption tank, thereby reducing the concentration and temperature of the waste gas, improving the pretreatment and adsorption effect of the waste gas, and improving the treatment effect of the waste gas; in the present application, the condenser adopts a series process, and the steam enters the first-stage condenser after desorption, and a small amount of condensate at the bottom of the adsorption tank merges with the discharge liquid of the first-stage condenser and enters the second-stage condenser, thereby improving the condensation effect of the steam and improving the recovery of hexamethyldisiloxane in the waste gas. Therefore, the present application effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0044] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present application shall still be included in the protection scope of the present application.

Claims

1. A chemical waste gas resource recovery equipment, comprising a coupled adsorption module (1), a condensation separation metering module (2), a pretreatment module (3), a steam pipeline (4), an induced draft fan (5) and an exhaust pipe (6), characterized in that: At least three adsorption tanks are arranged in the adsorption module (1), the three adsorption tanks are connected to each other via pipelines, at least three adsorption tanks are connected in series in pairs, and during operation, two of the adsorption tanks in series are connected to the pipeline, while the remaining adsorption tanks are closed, and the steam pipeline (4) and the condensation separation metering module (2) are respectively connected to the at least three adsorption tanks via pipelines.

2. The chemical waste gas resource recovery equipment according to claim 1 is characterized by: The adsorption tank comprises a first adsorption tank (12), a second adsorption tank (13) and a third adsorption tank (14); the pretreatment module (3) is connected to one end of the first adsorption tank (12) and one end of the third adsorption tank (14) respectively through an exhaust gas delivery pipeline (15); one end of the second adsorption tank (13) is connected to the inlet of the induced draft fan (5) through an exhaust gas discharge pipeline (111); one end of the first adsorption tank (12) is connected to one end of the second adsorption tank (13) through a pipeline; one end of the third adsorption tank (14) is connected to one end of the second adsorption tank (13) and the first adsorption tank (12) through a first branch pipe (16); the first branch pipe (16) is connected to the exhaust gas discharge pipeline (111); one end of the third adsorption tank (14) is connected to the exhaust gas discharge pipeline (111) through a second branch pipe (112).

3. The chemical waste gas resource recovery equipment according to claim 2 is characterized by: The outlet of the induced draft fan (5) is respectively connected to the first adsorption tank (12), the second adsorption tank (13) and one end of the third adsorption tank (14) through a second circulation pipe (110), and a surface cooler (11) is provided in the second circulation pipe (110).

4. The chemical waste gas resource recovery equipment according to claim 3 is characterized by: The other ends of the first adsorption tank (12), the second adsorption tank (13) and the third adsorption tank (14) are connected to the inlet of the pretreatment module (3) via a first circulation pipeline (17).

5. The chemical waste gas resource recovery equipment according to claim 2 is characterized by: The first adsorption tank (12), the second adsorption tank (13) and the third adsorption tank (14) are connected to the steam pipeline (4) at the top, and the first adsorption tank (12), the second adsorption tank (13) and the third adsorption tank (14) are connected to the condensation separation metering module (2) at the bottom via a steam discharge pipe (18) and a condensate discharge pipe (19).

6. The chemical waste gas resource recovery equipment according to claim 5, characterized in that: The condensation separation metering module (2) comprises a first condenser (21), a second condenser (22) and a separation storage tank (23); the steam discharge pipe (18) is connected to the inlet of the first condenser (21); the outlet of the first condenser (21) and the condensate discharge pipe (19) are connected to the inlet of the second condenser (22); and the outlet of the second condenser (22) is connected to the separation storage tank (23) via a pipe.

7. The chemical waste gas resource recovery equipment according to claim 2 is characterized by: The pretreatment module (3) comprises a washing tower (31), a waste gas inlet is arranged on one side of the bottom of the washing tower (31), and the top of the washing tower (31) is connected to the waste gas conveying pipeline (15).

8. The chemical waste gas resource recovery equipment according to claim 7, characterized in that: A heat exchanger (32) is arranged above the interior of the washing tower (31), and the heat exchanger (32) is connected to a cooling water pipeline (7).

Images