Waste steam heat recovery and white smoke elimination system for grain spreading, airing and steaming in brewing workshop

Abstract

The utility model discloses a waste steam heat recovery and white elimination system for grain spreading, airing and steaming in a brewing workshop. The first-stage condenser is connected with a waste steam input pipe and used for condensing waste steam input by the waste steam input pipe, and the second-stage condenser is connected with the first-stage condenser and used for secondarily condensing the waste steam sent out by the first-stage condenser. The first-stage condenser is connected with a heat recovery water tank, the heat recovery water tank receives hot water generated after heat exchange of the first-stage condenser, the third-stage recuperator is connected with the second-stage condenser and is used for reheating dead steam which is not condensed and sent out by the second-stage condenser so as to eliminate white steam, and the exhaust pipe is connected with the third-stage recuperator. The heat recovery water tank is further connected with the third-stage recuperator so as to provide hot water for the third-stage recuperator to serve as a heat source, and dead steam passing through the third-stage recuperator is heated for reheating. The waste steam heat recovery device can recover heat of waste steam, effectively eliminate white steam, meet the exhaust standard and achieve the effects of energy conservation and environmental protection, thereby having extremely high market competitiveness.

Description

Technical Field:

[0001] The utility model relates to the technical field of brewing, in particular to a heat recovery and white fog elimination system for the exhausted steam of spreading and airing and steaming grains in a brewing workshop. Background Art:

[0002] The brewing of Chinese liquor has a long history all over the world and among different ethnic groups, and has formed unique cultures.

[0003] The energy consumption utilization rate of Chinese liquor brewing enterprises is generally very low. After the distilled cooling water is recycled, the heat is discharged into the atmosphere, resulting in losses. During the open-pot saccharification process, a large amount of water vapor heat is discharged into the atmosphere, causing heat loss and environmental pollution. The existing steam-saving saccharification method of covering the pot still does not completely solve the problems of low energy consumption utilization rate and environmental pollution caused by steam.

[0004] In this regard, the Chinese utility model patent with the patent number CN202123050662.4 discloses a heat energy recovery and utilization system for Chinese liquor brewing, including a pot still cover, a steam guide pipe and a wine vapor inlet pipe. Above the middle of the pot still cover, there is a top cover opening in a cylindrical structure. Above the top cover opening, there is a steam guide pipe, and below one end of the steam guide pipe close to the top cover opening, there is a first cover cylinder with a hollow setting. The beneficial effects are as follows: This heat energy recovery and utilization system greatly increases the temperature of the demineralized water flowing out of the return water pipe, can well recover and utilize the steam generated during the steaming and saccharification of grains, avoids the waste of hot steam, and the heat energy recovery and utilization system uses a heat exchanger (i.e., a cooler) to convert the heat released by condensing the steam heat into the temperature increase of the cooling water to achieve the purpose of reusing the heat energy. After the hot steam heats the water in the return water pipe, the heated hot water can be used for air-conditioning warm air, boiler feed water, heat pump refrigeration, and can also be used to heat hot air for drying distiller's grains, thereby improving the energy consumption utilization rate.

[0005] However, after the above heat energy recovery and utilization system recovers and utilizes the heat of the steam generated during the steaming and saccharification of grains, the exhausted steam formed is directly discharged into the atmosphere. However, this exhausted steam is not reused to recover heat energy, and because it still contains acid-containing liquid and a large amount of water vapor, when it is discharged into the atmosphere, a large amount of acid-containing white fog will be formed, which will affect the atmospheric environment and cannot achieve good environmental protection and energy-saving effects.

[0006] In view of this, the inventor of the present invention proposes the following technical solutions. Content of the Utility Model:

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a heat recovery and white fog elimination system for the exhausted steam of spreading and airing and steaming grains in a brewing workshop.

[0008] To solve the above technical problems, the present utility model adopts the following technical solutions: The brewing workshop cooling and steaming grain exhausted steam heat recovery and white fog elimination system includes a primary condenser connected to the exhausted steam input pipe and used for condensing the exhausted steam input by the exhausted steam input pipe, a secondary condenser connected to the primary condenser and used for secondarily condensing the exhausted steam sent out by the primary condenser, a tertiary reheater connected to the secondary condenser and used for reheating the non-condensed exhausted steam sent out by the secondary condenser to eliminate white fog, and an exhaust pipe connected to the tertiary reheater. The primary condenser is connected to a heat recovery water tank, and the heat recovery water tank receives the hot water generated after heat exchange by the primary condenser. Moreover, the heat recovery water tank is also connected to the tertiary reheater to provide hot water as a heat source for the tertiary reheater to heat the exhausted steam passing through the tertiary reheater for reheating.

[0009] Furthermore, in the above technical solution, a first spray head for spraying exhausted steam to cool down and condense the exhausted steam and eliminate white fog is further provided at the front end of the primary condenser. The first spray head is connected to a second water pump module, and the second water pump module is connected to the heat recovery water tank or the condensation water tank.

[0010] Furthermore, in the above technical solution, a second spray head for spraying exhausted steam to cool down and condense the exhausted steam and eliminate white fog is further provided at the front end of the secondary condenser. The second spray head is connected to a second water pump module.

[0011] Furthermore, in the above technical solution, the heat recovery water tank is connected to a first hot water reheating pipe, the first hot water reheating pipe is connected to a second water pump module, the second water pump module is connected to a second hot water reheating pipe, the second hot water reheating pipe is connected to the tertiary reheater to provide hot water for the tertiary reheater, and a second valve body is further provided on the first hot water reheating pipe.

[0012] Furthermore, in the above technical solution, the primary condenser includes a first housing and a first heat exchange core installed in the first housing. A first shell-side flow channel for the exhausted steam to pass through is formed between the outside of the first heat exchange core and the inner wall of the first housing. The first heat exchange core has a first plate-side flow channel isolated from the first shell-side flow channel. The outlet of the first plate-side flow channel is connected to the heat recovery water tank, and the heat recovery water tank is connected to the inlet of the first plate-side flow channel through a first water pump module. The first shell-side flow channel is also connected to the condensation water tank to convey the condensed water to the condensation water tank.

[0013] Furthermore, in the above technical solution, the secondary condenser includes a second housing and a second heat exchange core installed in the second housing. A second shell-side flow channel for the exhausted steam to pass through is formed between the outside of the second heat exchange core and the inner wall of the second housing. The second heat exchange core has a second plate-side flow channel isolated from the second shell-side flow channel. The outlet of the second plate-side flow channel is connected to a low-level hot water container, the outlet of the second plate-side flow channel is connected to a high-level cold water container, and the second shell-side flow channel is also connected to the condensation water tank to convey the condensed water to the condensation water tank.

[0014] Furthermore, in the above technical solution, the three-stage reheater includes a third shell and a third heat exchange core installed in the third shell, and a third shell-side flow channel for exhaust steam to pass through is formed between the outside of the third heat exchange core and the inner wall of the third shell. The third heat exchange core has a third plate-side flow channel isolated from the third shell-side flow channel, and the outlet of the third plate-side flow channel is connected to the condensate water tank, and the inlet of the third plate-side flow channel is connected to the water outlet of the second water pump module. The water inlet of the second water pump module is also connected to the first valve body and then to the condensate water tank, and the second shell-side flow channel is also connected to the condensate water tank to transport the condensate to the condensate water tank.

[0015] Furthermore, in the above technical solution, the exhaust steam input pipe includes a first exhaust steam branch pipe for collecting the drying exhaust steam generated when the automatic drying machine is working, a second exhaust steam branch pipe for collecting the steaming exhaust steam generated when the wine steamer is working, and an exhaust steam main pipe connected to the first exhaust steam branch pipe and the second exhaust steam branch pipe, wherein the exhaust steam main pipe is also connected to a straight exhaust pipe, which is connected to a straight exhaust fan, and a first air valve is arranged in the straight exhaust pipe; the first-stage condenser is connected to the exhaust steam main pipe through an exhaust steam recovery pipe, and a second air valve is arranged in the exhaust steam recovery pipe.

[0016] Furthermore, in the above technical solution, the first shell of the first-stage condenser, the second shell of the second-stage condenser, and the third shell of the third-stage reheater are fixedly connected together in sequence and interconnected, and the first shell, the second shell, and the third shell are fixedly installed on a frame, a distribution box is provided on the frame, and a protective cover is also provided on the frame, which covers the periphery of the first shell, the second shell, and the third shell.

[0017] Furthermore, in the above technical solution, a first fan for extracting exhaust steam after passing through the three-stage reheater and discharging it upward out of the exhaust pipe is also provided at the connection position between the lower end of the exhaust pipe and the three-stage reheater; the bottom of the exhaust pipe is also connected to a condensate water tank to transport the condensate to the condensate water tank; a bracket and a water receiving pan located outside the bracket are provided at the upper end of the exhaust pipe, a baffle cap is provided at the upper end of the bracket, the lower edge of the baffle cap protrudes from the outer periphery of the upper end of the exhaust pipe, and is placed directly above the water receiving pan, and the lower end of the water receiving pan is connected to a sewage pipe; a stainless steel filter is also provided at the upper end of the exhaust pipe.

[0018] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0019] 1. The utility model can effectively eliminate acidic water vapor, solid impurities, etc. in acidic high-temperature exhaust steam through at least two different de-whitening methods, namely, condensation de-whitening and drying de-whitening. It will not affect the atmospheric environment, so that the exhausted gas will not have a white mist effect. At the same time, the temperature of the exhausted dry exhaust steam is relatively low, thereby meeting the emission standards and being more energy-saving and environmentally friendly.

[0020] 2. The utility model also recovers the hot water generated after heat exchange in the primary condenser through a heat recovery water tank, and supplies this hot water as a heat source to the tertiary reheater to heat the exhausted steam passing through the tertiary reheater for reheating. Its heat recovery effect is extremely ideal. At the same time, the hot water recovered by the heat recovery water tank can also be utilized in ways such as being used as boiler water, with excellent energy conservation and environmental protection effects.

[0021] 3. A first spray head for spraying the exhausted steam to cool, condense and eliminate white is also provided at the front end of the primary condenser. Before the exhausted steam enters the primary condenser, the second water pump module first extracts the water in the heat recovery water tank or the condensate water tank and sprays the water through the first spray head onto the exhausted steam, so as to achieve the purpose of repeated circulation use, which is more energy-saving and environmentally friendly. At the same time, the exhausted steam is cooled, condensed and the white is eliminated in this way, enabling the utility model to have three different white elimination methods: spray white elimination, condensation white elimination and drying white elimination, and its white elimination effect is excellent. Description of the drawings:

[0022] Figure 1 is the structural schematic diagram of the utility model;

[0023] Figure 2 is the assembly drawing of the utility model;

[0024] Figure 3 is the top view of the utility model;

[0025] Figure 4 is the three-dimensional view of the utility model;

[0026] Figure 5 is the three-dimensional view of the utility model after removing the frame, distribution box and protective cover;

[0027] Figure 6 is the three-dimensional view of the utility model from another perspective after removing the frame, distribution box and protective cover;

[0028] Figure 7 is Figure 3 the cross-sectional view along the A-A direction. Detailed implementation manners:

[0029] The following further describes the utility model in conjunction with specific embodiments and the drawings.

[0030] See Figures 1-7As shown, a system for recovering and de-whitening the exhaust steam from grain drying and steaming in a brewing workshop comprises a primary condenser 1 connected to an exhaust steam input pipe 5 and used for condensing the exhaust steam input by the exhaust steam input pipe 5, a secondary condenser 2 connected to the primary condenser 1 and used for secondary condensing the exhaust steam sent out by the primary condenser 1, a tertiary reheater 3 connected to the secondary condenser 2 and used for reheating the uncondensed exhaust steam sent out by the secondary condenser 2 for de-whitening, and an exhaust pipe 4 connected to the tertiary reheater 3, wherein the primary condenser 1 is connected to a heat recovery water tank 6, which receives hot water generated after heat exchange by the primary condenser 1, and the heat recovery water tank 6 is also connected to the tertiary reheater 3 to provide hot water to the tertiary reheater 3 as a heat source to heat the exhaust steam passing through the tertiary reheater 3 for reheating. During operation, the utility model condenses the exhaust steam inputted from the exhaust steam input pipe 5 through the primary condenser 1, so that the acidic water vapor in the exhaust steam is condensed into condensed water, and the exhaust steam is de-whitened once; the exhaust steam after condensation enters the secondary condenser 2 and is secondarily condensed by the secondary condenser 2, so as to achieve the purpose of dehydration and de-whitening, and then most of the exhaust steam is condensed into condensed water, and a small amount of non-condensable exhaust steam enters the third-stage recuperator 3, and the third-stage recuperator 3 heats the exhaust steam, so as to achieve the last drying and de-whitening, and the exhaust steam after passing through the third-stage recuperator 3 is discharged into the atmosphere through the exhaust pipe 4. In other words, the utility model can effectively eliminate the acidic water vapor, solid impurities, etc. in the acidic high-temperature exhaust steam through at least two different de-whitening methods, namely, condensation de-whitening and drying de-whitening, which will not affect the atmospheric environment, so that the discharged gas will not have a white mist effect, and at the same time, the temperature of the discharged dry exhaust steam is relatively low, so as to meet the emission standards, and be more energy-saving and environmentally friendly. In addition, the utility model also recovers the hot water generated after heat exchange in the primary condenser 1 through the heat recovery water tank 6, and also supplies the hot water as a heat source to the tertiary recuperator 3 to heat the exhaust steam passing through the tertiary recuperator 3 for recuperation. The remaining heat recovery effect is extremely ideal. At the same time, the hot water recovered by the heat recovery water tank 6 can also be used as boiler water, etc., with excellent energy-saving and environmental protection effects.

[0031] The utility model is used for recovering the grain-drying exhaust steam generated when the automatic drying machine is working and the grain-steaming exhaust steam generated when the wine retort is working, so as to realize heat recovery and de-whitening of the exhaust steam.

[0032] The waste steam input pipe 5 includes a first waste steam branch pipe 51 for collecting the waste steam formed during the operation of the automatic airing machine, a second waste steam branch pipe 52 for collecting the waste steam formed during the operation of the steamer, and a waste steam main pipe 53 connected to the first waste steam branch pipe 51 and the second waste steam branch pipe 52. Among them, the waste steam main pipe 53 is also connected to a direct discharge pipe 54, and the direct discharge pipe 54 is connected to a direct discharge fan 55. A first air valve 541 is provided in the direct discharge pipe 54; the primary condenser 1 is connected to the waste steam main pipe 53 through a waste steam recovery pipe 56, and a second air valve 561 is provided in the waste steam recovery pipe 56. The user can choose two different ways to handle the waste steam. Among them, the first air valve 541 can be opened and the second air valve 561 can be closed. At this time, the direct discharge pipe 54 is in a conducting state, and the waste steam recovery pipe 56 is in a closed state, that is, the present invention does not work, while the direct discharge fan 55 works, and the direct discharge fan 55 cooperates with the direct discharge pipe 54 to directly discharge the waste steam to the outside; or, the second air valve 561 can be opened and the first air valve 541 can be closed. At this time, the direct discharge pipe 54 is in a closed state, and the waste steam recovery pipe 56 is in a conducting state, that is, the direct discharge fan 55 does not work, while the present invention works, recovering the waste steam formed during the operation of the automatic airing machine and the waste steam formed during the operation of the steamer, realizing the heat recovery and white fog elimination of the waste steam.

[0033] To improve the condensation effect and white fog elimination effect of the primary condenser 1, the following design is also made: A first spray head 101 for spraying waste steam to cool, condense and eliminate white fog from the waste steam is further provided at the front end of the primary condenser 1. The first spray head 101 is connected to a second water pump module 102, and the second water pump module 102 is connected to the heat recovery water tank 6 or the condensation water tank 7. Before the waste steam enters the primary condenser 1, the second water pump module 102 first extracts the water in the heat recovery water tank 6 or the condensation water tank 7 and sprays the water through the first spray head 101 to spray onto the waste steam. At the same time, the purpose of repeated recycling can be achieved, which is more energy-saving and environmentally friendly, and the waste steam is cooled, condensed and the white fog is eliminated in this way, so that the present invention has three different white fog elimination methods: spray white fog elimination, condensation white fog elimination and drying white fog elimination, and its white fog elimination effect is excellent.

[0034] To improve the condensation effect and white fog elimination effect of the secondary condenser 2, the following design is also made: A second spray head 201 for spraying waste steam to cool, condense and eliminate white fog from the waste steam is further provided at the front end of the secondary condenser 2. The second spray head 201 is connected to the second water pump module 102. Before the waste steam enters the secondary condenser 2, the second water pump module 102 first extracts the water in the heat recovery water tank 6 or the condensation water tank 7 and sprays the water through the secondary condenser 2 to spray onto the waste steam. At the same time, the purpose of repeated recycling can be achieved, which is more energy-saving and environmentally friendly, and the waste steam is cooled, condensed and the white fog is eliminated in this way, so that the present invention has three different white fog elimination methods: spray white fog elimination, condensation white fog elimination and drying white fog elimination, and its white fog elimination effect is excellent.

[0035] The specific structure of the primary condenser 1 is described as follows:

[0036] The primary condenser 1 includes a first housing 11 and a first heat exchange core 12 installed inside the first housing 11. A first shell-side flow channel 111 for the exhaust steam to pass through is formed between the outside of the first heat exchange core 12 and the inner wall of the first housing 11. The first heat exchange core 12 has a first plate-side flow channel 121 isolated from the first shell-side flow channel 111. The outlet of the first plate-side flow channel 121 is connected to the heat recovery water tank 6, and the heat recovery water tank 6 is connected to the inlet of the first plate-side flow channel 121 through a first water pump module 60. The first shell-side flow channel 111 is also connected to the condensate water tank 7 to convey the condensate water to the condensate water tank 7. During operation, the cooling water enters through the inlet of the first plate-side flow channel 121, exchanges heat with the exhaust steam in the first shell-side flow channel 111 through the first plate-side flow channel 121, and then the heated cooling water flows out from the outlet of the first plate-side flow channel 121 and enters the heat recovery water tank 6. At the same time, part of the exhaust steam in the first shell-side flow channel 111 will be condensed into condensate water after exchanging heat with the cooling water, achieving the functions of condensation and white plume elimination, and the condensate water is conveyed to the condensate water tank 7.

[0037] The specific structure of the secondary condenser 2 is described as follows:

[0038] The secondary condenser 2 includes a second housing 21 and a second heat exchange core 22 installed inside the second housing 21. A second shell-side flow channel 211 for the exhaust steam to pass through is formed between the outside of the second heat exchange core 22 and the inner wall of the second housing 21. The second heat exchange core 22 has a second plate-side flow channel 221 isolated from the second shell-side flow channel 211. The outlet of the second plate-side flow channel 221 is connected to the low-temperature hot water container 23, and the outlet of the second plate-side flow channel 221 is connected to the high-temperature cold water container 24. The second shell-side flow channel 211 is also connected to the condensate water tank 7 to convey the condensate water to the condensate water tank 7. During operation, the cooling water in the high-temperature cold water container 24 enters through the inlet of the second plate-side flow channel 221, exchanges heat with the exhaust steam in the second shell-side flow channel 211 through the second plate-side flow channel 221, and then the heated cooling water flows out from the outlet of the second plate-side flow channel 221 and enters the low-temperature hot water container 23. At the same time, part of the exhaust steam in the second shell-side flow channel 211 will be condensed into condensate water after exchanging heat with the cooling water, achieving the functions of condensation and white plume elimination, and the condensate water is conveyed to the condensate water tank 7. Among them, the high-temperature cold water container 24 is also connected to the inlet of the first plate-side flow channel 121 through a third pipeline 242 and a fifth valve body 241, so that after the fifth valve body 241 is opened, the cooling water can be input into the first plate-side flow channel 121 through the high-temperature cold water container 24, thereby achieving the purpose of selectively conveying cooling water at different temperatures.

[0039] Among them, the outlet of the second plate-side flow channel 221 is connected to the low-temperature hot water container 23 through a first pipeline 202, and the outlet of the second plate-side flow channel 221 is connected to the high-temperature cold water container 24 through a second pipeline 203.

[0040] The specific structure of the said tertiary reheater 3 will be described as follows:

[0041] The tertiary reheater 3 includes a third housing 31 and a third heat exchange core 32 installed inside the third housing 31. A third shell-side flow channel 311 for the exhaust steam to pass through is formed between the outside of the third heat exchange core 32 and the inner wall of the third housing 31. The third heat exchange core 32 has a third plate-side flow channel 321 isolated from the third shell-side flow channel 311. The outlet of the third plate-side flow channel 321 is connected to the condensate tank 7, and the inlet of the third plate-side flow channel 321 is connected to the water outlet end of the second water pump module 102. The water inlet end of the second water pump module 102 is also connected to the first valve body 104 and then to the condensate tank 7. The second shell-side flow channel 211 is also connected to the condensate tank 7 to convey the condensate water to the condensate tank 7. Among them, the heat recovery tank 6 is connected to the first reheated water pipe 61, the first reheated water pipe 61 is connected to the second water pump module 102, the second water pump module 102 is connected to the second reheated water pipe 103, and the second reheated water pipe 103 is connected to the tertiary reheater 3 to supply hot water to the tertiary reheater 3. And a second valve body 611 is also provided on the first reheated water pipe 61. Among them, the second water pump module 102 includes a second water pump 105, a check valve 106, and a third valve body 107 connected in sequence. Among them, a second reheated water pipe 103 is connected between the inlet of the third plate-side flow channel 321 and the water outlet end of the second water pump module 102. During operation, the second water pump module 102 extracts the hot water from the heat recovery tank 6 through the first reheated water pipe 61, and conveys the hot water to the inlet of the third plate-side flow channel 321 through the second reheated water pipe 103. The hot water flows into the condensate tank 7 after passing through the third plate-side flow channel 321. When the hot water passes through the third plate-side flow channel 321, it can be heated with the exhaust steam passing through the third shell-side flow channel 311 to dry the exhaust steam, thereby realizing the drying and white smoke elimination of the exhaust steam.

[0042] The first housing 11 of the primary condenser 1, the second housing 21 of the secondary condenser 2, and the third housing 31 of the tertiary reheater 3 are fixedly connected together in sequence and communicate with each other, thereby ensuring the stable connection of the primary condenser 1, the secondary condenser 2, and the tertiary reheater 3. And the first housing 11, the second housing 21, and the third housing 31 are fixedly installed on a frame 8, and its assembly structure is more stable. A distribution box 81 is provided on the frame 8, and a protective cover 82 is also provided on the frame 8. The protective cover 82 covers the periphery of the first housing 11, the second housing 21, and the third housing 31, thereby being able to play a good protective role for the primary condenser 1, the secondary condenser 2, and the tertiary reheater 3.

[0043] A first fan 9 is also provided at the connection position between the lower end of the exhaust pipe 4 and the tertiary reheater 3 for sucking the exhausted steam after passing through the tertiary reheater 3 and discharging it upward into the exhaust pipe 4. When the present utility model is in operation, the first fan 9 realizes air extraction, so that the exhausted steam can smoothly pass through the primary condenser 1, the secondary condenser 2, and the tertiary reheater 3, and finally be discharged from the exhaust pipe 4, ensuring the smoothness and efficiency of the operation of the present utility model.

[0044] The bottom of the exhaust pipe 4 is also connected to a condensate water tank 7 to convey the condensed water to the condensate water tank 7. When the exhausted steam passes through the exhaust pipe 4 and in cold weather, the exhausted steam contacting the cold exhaust pipe 4 can also achieve a condensation effect, so that the condensed cooling water can be recovered into the condensate water tank 7.

[0045] In addition, a bracket 41 and a water receiving tray 42 located outside the bracket 41 are provided at the upper end of the exhaust pipe 4. A retaining cap 43 is provided at the upper end of the bracket 41. The lower edge of the retaining cap 43 protrudes beyond the periphery of the upper end of the exhaust pipe 4 and is placed directly above the water receiving tray 42, and a sewage discharge pipe 44 is connected to the lower end of the water receiving tray 42; when the exhausted steam is discharged through the exhaust pipe 4, it will contact the retaining cap 43 and be blocked by the retaining cap 43, forcing the exhausted steam to pass horizontally through the bracket 41 and then be discharged horizontally. When the exhausted steam is at the retaining cap 43 and in cold weather, the exhausted steam contacting the cold retaining cap 43 can also achieve a condensation effect, so that the condensed cooling water can be recovered and dripped into the water receiving tray 42, and then be collected by the water receiving tray 42 and discharged through the sewage discharge pipe 44.

[0046] A stainless steel filter screen 40 is also provided at the upper end of the exhaust pipe 4. The stainless steel filter screen 40 plays a protective role and can prevent foreign objects from entering the exhaust pipe 4.

[0047] In summary, the present utility model can effectively eliminate the acid-containing water vapor, solid impurities, etc. in the acid-containing high-temperature exhausted steam through at least two different white elimination methods, namely condensation white elimination and drying white elimination. It will not affect the atmospheric environment, so that the discharged gas will not have a white fog effect, and at the same time, the temperature of the discharged dry exhausted steam is relatively low, thus meeting the emission standards and being more energy-saving and environmentally friendly. In addition, the present utility model also recovers the hot water generated after heat exchange by the primary condenser 1 through the heat recovery water tank 6, and also supplies this hot water as a heat source to the tertiary reheater 3 to heat the exhausted steam passing through the tertiary reheater 3 for reheating. Its waste heat recovery effect is extremely ideal. At the same time, the hot water recovered by the heat recovery water tank 6 can also be utilized as boiler water and other ways, and the energy-saving and environmental protection effect is extremely excellent.

[0048] Certainly, the above are only specific embodiments of the present utility model and do not limit the scope of implementation of the present utility model. Any equivalent changes or modifications made according to the structure, characteristics, and principles described in the scope of the patent application of the present utility model should be included in the scope of the patent application of the present utility model.

Claims

1. The exhaust steam heat recovery and de-whitening system for drying and steaming grain in the brewing workshop is characterized by: It comprises a primary condenser (1) connected to an exhaust steam input pipe (5) and used for condensing exhaust steam inputted from the exhaust steam input pipe (5), a secondary condenser (2) connected to the primary condenser (1) and used for secondary condensing the exhaust steam sent from the primary condenser (1), a tertiary reheater (3) connected to the secondary condenser (2) and used for reheating the exhaust steam sent from the secondary condenser (2) that has not been condensed to eliminate whitening, and an exhaust pipe (4) connected to the tertiary reheater (3), wherein the primary condenser (1) is connected to a heat recovery water tank (6) for receiving hot water generated after heat exchange in the primary condenser (1), and the heat recovery water tank (6) is also connected to the tertiary reheater (3) to provide hot water to the tertiary reheater (3) as a heat source to heat the exhaust steam passing through the tertiary reheater (3) to reheat.

2. The system for recovering and removing whitening waste steam from grains steamed in a brewing workshop according to claim 1 is characterized by: The front end of the primary condenser (1) is also provided with a first spray head (101) for spraying exhaust steam to cool, condense and de-whiten the exhaust steam; the first spray head (101) is connected to a second water pump module (102); and the second water pump module (102) is connected to a heat recovery water tank (6) or a condensation water tank (7).

3. The system for recovering and removing whitening waste steam from grains steamed in a brewing workshop according to claim 2 is characterized by: The front end of the secondary condenser (2) is also provided with a second spray head (201) for spraying exhaust steam to cool, condense and de-whiten the exhaust steam, and the second spray head (201) is connected to the second water pump module (102).

4. The system for recovering and removing white steam from grains steamed in a brewing workshop according to claim 1 is characterized in that: The heat recovery water tank (6) is connected to a first reheating water pipe (61), the first reheating water pipe (61) is connected to a second water pump module (102), the second water pump module (102) is connected to a second reheating water pipe (103), the second reheating water pipe (103) is connected to a third-stage reheater (3) to provide hot water to the third-stage reheater (3), and a second valve body (611) is also provided on the first reheating water pipe (61).

5. The system for recovering and removing white steam from grain steam in a brewing workshop according to any one of claims 1 to 4, characterized in that: The primary condenser (1) comprises a first shell (11) and a first heat exchange core (12) installed in the first shell (11); a first shell-side flow channel (111) for exhaust steam to pass through is formed between the outside of the first heat exchange core (12) and the inner wall of the first shell (11); the first heat exchange core (12) has a first plate-side flow channel (121) isolated from the first shell-side flow channel (111); the outlet of the first plate-side flow channel (121) is connected to a heat recovery water tank (6); the heat recovery water tank (6) is connected to the inlet of the first plate-side flow channel (121) via a first water pump module (60); and the first shell-side flow channel (111) is also connected to a condensation water tank (7) to transport condensed water to the condensation water tank (7).

6. The system for recovering and removing white steam from grains steamed in a brewing workshop according to claim 5 is characterized by: The secondary condenser (2) comprises a second shell (21) and a second heat exchange core (22) installed in the second shell (21); a second shell-side flow channel (211) for exhaust steam to pass through is formed between the outside of the second heat exchange core (22) and the inner wall of the second shell (21); the second heat exchange core (22) has a second plate-side flow channel (221) isolated from the second shell-side flow channel (211); an outlet of the second plate-side flow channel (221) is connected to a low-level hot water container (23); an outlet of the second plate-side flow channel (221) is connected to a high-level cold water container (24); and the second shell-side flow channel (211) is also connected to a condensate tank (7) to transport condensate to the condensate tank (7).

7. The system for recovering and removing white steam from grains steamed in a brewing workshop according to claim 6 is characterized by: The three-stage reheater (3) comprises a third shell (31) and a third heat exchange core (32) installed in the third shell (31); a third shell-side flow channel (311) for exhaust steam to pass through is formed between the outside of the third heat exchange core (32) and the inner wall of the third shell (31); the third heat exchange core (32) has a third plate-side flow channel (321) isolated from the third shell-side flow channel (311); the outlet of the third plate-side flow channel (321) is connected to a condensate water tank (7); the inlet of the third plate-side flow channel (321) is connected to a water outlet of a second water pump module (102); the water inlet of the second water pump module (102) is also connected to the first valve body (104) and then to the condensate water tank (7); the second shell-side flow channel (211) is also connected to the condensate water tank (7) to transport condensate to the condensate water tank (7).

8. The system for recovering and removing whitening waste steam from grains steamed in a brewing workshop according to any one of claims 1 to 4, characterized in that: The exhaust steam input pipe (5) comprises a first exhaust steam branch pipe (51) for collecting the drying exhaust steam generated when the automatic drying machine is in operation, a second exhaust steam branch pipe (52) for collecting the steaming exhaust steam generated when the wine steamer is in operation, and an exhaust steam main pipe (53) connected to the first exhaust steam branch pipe (51) and the second exhaust steam branch pipe (52), wherein the exhaust steam main pipe (53) is also connected to a straight exhaust pipe (54), the straight exhaust pipe (54) is connected to a straight exhaust fan (55), and a first air valve (541) is arranged in the straight exhaust pipe (54); the first-stage condenser (1) is connected to the exhaust steam main pipe (53) via an exhaust steam recovery pipe (56), and a second air valve (561) is arranged in the exhaust steam recovery pipe (56).

9. The system for recovering and removing whitening waste steam from grains steamed in a brewing workshop according to any one of claims 1 to 4, characterized in that: The first shell (11) of the first-stage condenser (1), the second shell (21) of the second-stage condenser (2), and the third shell (31) of the third-stage reheater (3) are fixedly connected together in sequence and are interconnected, and the first shell (11), the second shell (21), and the third shell (31) are fixedly installed on a frame (8), a distribution box (81) is provided on the frame (8), and a protective cover (82) is also provided on the frame (8), and the protective cover (82) covers the periphery of the first shell (11), the second shell (21), and the third shell (31).

10. The system for recovering and removing whitening waste steam from grains steamed in a brewing workshop according to any one of claims 1 to 4, characterized in that: A first fan (9) for sucking the exhaust steam after passing through the third-stage reheater (3) and discharging it upwards out of the exhaust pipe (4) is also provided at the connection position between the lower end of the exhaust pipe (4) and the third-stage reheater (3); the bottom of the exhaust pipe (4) is also connected to a condensate tank (7) to transport condensate to the condensate tank (7); a bracket (41) and a water receiving tray (42) located outside the bracket (41) are provided at the upper end of the exhaust pipe (4); a baffle cap (43) is provided at the upper end of the bracket (41); the lower edge of the baffle cap (43) protrudes from the upper end of the exhaust pipe (4). The outer periphery is placed directly above the water receiving tray (42), and the lower end of the water receiving tray (42) is connected to a sewage pipe (44); A stainless steel filter screen (40) is also provided at the upper end of the exhaust pipe (4).

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