Spreading and airing dead steam condensation VOCs treatment and white smoke elimination system

Abstract

The utility model discloses an air-spread dead steam condensation VOCs (Volatile Organic Compounds) treatment and white smoke elimination system which comprises a condensation VOCs treatment and white smoke elimination device, the device comprises a shell, a spraying module, a first-stage condensing module, a second-stage heating module and a third-stage heat supplementing module, wherein the spraying module is used for spraying cooling water to dead steam to condense, eliminate white steam and treat VOCs (volatile organic compounds); the first-stage condensing module is used for performing secondary condensation, eliminate white steam and treat VOCs on the dead steam; the second-stage heating module is used for heating the dead steam to dehydrate and eliminate white steam, and the third-stage heat supplementing module is used for performing steam heating on the dead steam to perform secondary dehydration and eliminate white steam; a first water inlet pipe of the first-stage condensing module is connected with a cold water source, a first water outlet pipe of the first-stage condensing module is connected with a hot water tank, and the second-stage heating module is provided with a second water inlet pipe and a second water outlet pipe; the third-stage heat compensation module is provided with a steam inlet pipe and a condensation outlet pipe; the shell is provided with an air inlet, an air outlet and a condensate water collecting pipe. And the exhaust device comprises an exhaust fan and an exhaust pipe which are connected with the air outlet of the shell. According to the waste steam treatment device, VOCs treatment and white smoke elimination treatment with a good effect can be achieved on waste steam, and the emission requirement is met.

Description

Technical fields:

[0001] This utility model relates to the field of brewing technology, specifically to a system for treating and eliminating VOCs from the condensation of exhaust steam during the cooling process. Background technology:

[0002] Baijiu is a unique distilled spirit from China and one of the world's six major distilled spirits. It is made by distilling fermented starch or sugary raw materials. Baijiu has a long history of brewing in various parts of the world and among various ethnic groups, and has formed its own unique culture.

[0003] During the steaming, distillation, storage, and drying of grains and mash, high-temperature "white smoke" (i.e., steam with water) is generated and directly emitted into the atmosphere, causing heat loss and environmental pollution. The white smoke contains water vapor, small amounts of ethanol, organic acids, benzene, formaldehyde and other VOCs, and is accompanied by a certain odor of distiller's grains.

[0004] Chinese utility model patent CN202123050662.4 discloses a heat energy recovery and utilization system for baijiu (Chinese liquor) brewing, including a pot lid, a steam pipe, and a steam inlet pipe. The pot lid has a cylindrical top opening at the top center, and a steam pipe is positioned above the top opening. A hollow first cover cylinder is located below the end of the steam pipe near the top opening. The beneficial effects are: this heat energy recovery and utilization system significantly increases the temperature of the demineralized water flowing out of the return water pipe, effectively recovering and utilizing the steam generated during grain gelatinization, avoiding the waste of hot steam. The system uses a heat exchanger to condense the steam heat, releasing it and converting it into a temperature increase in the cooling water, achieving the purpose of reusing the heat energy. After the hot steam heats the water in the return water pipe, the heated water can be used for air conditioning heating, boiler feedwater, heat pump cooling, and can also heat the lees for drying, thereby improving energy efficiency.

[0005] However, while the aforementioned heat recovery system recovers and utilizes the heat from the steam generated during grain gelatinization, the resulting white smoke is not effectively treated and is directly released into the atmosphere. This white smoke contains water vapor, small amounts of ethanol, organic acids, benzene, formaldehyde, and other VOCs, and is accompanied by a certain odor of fermented grains. Direct emission of this white smoke not only impacts the normal lives of residents near the distillery but also raises environmental issues, a heavy production burden that enterprises urgently need to address annually, severely hindering the normal development of the distillery industry.

[0006] In view of the above, the inventors propose the following technical solution. Utility Model Content:

[0007] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a system for treating and eliminating VOCs from the condensation of exhaust steam during the cooling process.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The waste steam condensation VOCs treatment and whitening system includes: a condensation VOCs treatment and whitening device, which includes a shell and a spray module installed sequentially inside the shell for spraying cooling water onto the waste steam for condensation whitening and VOCs treatment; a primary condensation module for secondary condensation whitening and VOCs treatment of the waste steam; a secondary heating module for heating the non-condensable waste steam formed after condensation for dehydration whitening; and a secondary heating module for heating the heated waste steam. A three-stage heat replenishment module for secondary dehydration and whitening via steam heating; the first inlet pipe of the first-stage condensing module is connected to a cold water source, and the first outlet pipe of the first-stage condensing module is connected to a hot water tank; the second-stage heating module has a second inlet pipe and a second outlet pipe for introducing hot water; the third-stage heat replenishment module has a steam inlet pipe for introducing steam and a condensate outlet pipe for discharging condensate; the outer casing has an air inlet and an air outlet, as well as a condensate collection pipe; and an exhaust device, which includes an exhaust fan connected to the air outlet of the outer casing and an exhaust pipe installed on the exhaust fan.

[0009] Furthermore, in the above technical solution, the spray module includes a spray pipe that extends laterally along the side of the outer shell and extends to the outside of the outer shell, and a number of spray heads installed on the spray pipe. The spray heads are located behind the air inlet and at the front end of the primary condensation module.

[0010] Furthermore, in the above technical solution, the primary condensing module includes a first plate and a second plate, and a plurality of first condensing tubes fixed between the first plate and the second plate and spaced apart. The first plate and the second plate are respectively embedded in the left and right grooves at the front end of the outer shell, forming a first chamber and a second chamber spaced apart from the outer shell. The openings at both ends of the first condensing tubes are respectively connected to the first chamber and the second chamber, and a condensing gap channel for exhaust vapor to pass through is formed between the first condensing tubes.

[0011] Furthermore, in the above technical solution, the outer side of the first plate is provided with multiple spaced first partitions, which divide the first chamber into multiple spaced first transfer chambers. The outer side of the second plate is provided with multiple spaced second partitions that are offset from the first partitions, which divide the first chamber into spaced first liquid inlet chambers, several second transfer chambers, and a first liquid outlet chamber. The first liquid inlet chamber is connected to the first first transfer chamber through at least one row of first condenser tubes, the second transfer chamber is connected to the first transfer chamber located in the middle through at least one row of first condenser tubes, and the first liquid outlet chamber is connected to the last first transfer chamber through at least one row of first condenser tubes. The first water inlet pipe is connected to the first liquid inlet chamber, and the first water outlet pipe is connected to the first liquid outlet chamber. The outer side of the first condenser tube is provided with first fins arranged in a spiral pattern.

[0012] Furthermore, in the above technical solution, the secondary heating module includes a third plate and a fourth plate, as well as multiple rows or columns of serpentine heating tubes fixed between the third plate and the fourth plate and spaced apart for introducing hot water, an inlet cylinder fixed to one end of the serpentine heating tubes and interconnected with each other, and an outlet cylinder fixed to the other end of the serpentine heating tubes and interconnected with each other. The third plate and the fourth plate are respectively fixedly connected to the inner wall of the outer shell. The second water inlet pipe is connected to the inlet cylinder, and the second water outlet pipe is connected to the outlet cylinder. The serpentine heating tube and the space between adjacent serpentine heating tubes each have a first heating gap channel for exhaust steam to pass through. The serpentine heating tube is provided with a second fin arranged in a spiral pattern on its exterior.

[0013] Furthermore, in the above technical solution, the three-stage heat replenishment module includes a fifth plate and a sixth plate, and a plurality of heat replenishment pipes fixed between the fifth plate and the sixth plate and spaced apart for introducing steam. The fifth plate and the sixth plate are respectively embedded in the left and right grooves at the rear end of the outer shell, forming a fifth chamber and a sixth chamber spaced apart from the outer shell. A third partition is also provided at the middle of the outer side of the sixth plate, which divides the sixth chamber into an upper chamber and a lower chamber distributed vertically. The upper chamber and the lower chamber are both connected to the fifth chamber through heat replenishment pipes, and a second heating gap channel for exhaust steam to pass through is formed between the heat replenishment pipes. The steam inlet pipe and the condensate outlet pipe are respectively connected to the upper chamber and the lower chamber. The heat replenishment pipes are provided with a third fin that is spirally distributed on the outside.

[0014] Furthermore, in the above technical solution, the longitudinal section of the outer shell is rectangular, and the primary condensing module, the secondary heating module, and the tertiary heat replenishment module are all rectangular. The length and height of the primary condensing module, the secondary heating module, and the tertiary heat replenishment module are all equal, and the width of the primary condensing module, the secondary heating module, and the tertiary heat replenishment module gradually decreases. The outer shell is equipped with a first temperature sensor, a second temperature sensor, a third temperature sensor, and a fourth temperature sensor. The first temperature sensor is located in front of the primary condensing module, the second temperature sensor is located between the primary condensing module and the secondary heating module, the third temperature sensor is located between the secondary heating module and the tertiary heat replenishment module, and the fourth temperature sensor is located behind the tertiary heat replenishment module.

[0015] Furthermore, in the above technical solution, the air outlet of the housing is connected to the air outlet of the exhaust fan through an axially folded flexible hose. The housing is mounted on a first frame, and the exhaust fan is mounted on a second frame. The first frame and the second frame are spaced apart.

[0016] Furthermore, in the above technical solution, the cold water source is a high-level cold water tank, the hot water tank is a low-level hot water tank, the second inlet pipe is connected to the gelatinization waste heat recovery temporary storage water tank, and the second outlet pipe is also connected to the gelatinization waste heat recovery temporary storage water tank; the condensate collection pipe is connected to the condensate tank, and the condensate tank is connected to the spray module through a pump set to provide spray water to the spray module.

[0017] Furthermore, in the above technical solution, the upper end of the exhaust pipe is provided with a bracket and a water receiving tray located outside the bracket. The upper end of the bracket is provided with a conical baffle cap, the lower edge of which protrudes from the outer periphery of the upper end of the exhaust pipe and is placed directly above the water receiving tray. The lower end of the water receiving tray is connected to a sewage pipe. The upper end of the exhaust pipe is also provided with a stainless steel filter screen.

[0018] After adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: This utility model first sprays cooling water onto the high-temperature exhaust steam entering the shell through the spray module to achieve the purpose of condensation and whitening and VOCs treatment, and the condensation and whitening effect is the best, and the VOCs treatment effect is also the best; then the first-stage condensation module performs secondary condensation and whitening and VOCs treatment on the exhaust steam; finally, the second-stage heating module heats the exhaust steam once or the second-stage heating module combined with the third-stage supplementary heating module heats the exhaust steam twice to achieve the purpose of dehumidification, while achieving dehydration and whitening, reducing visible white smoke, and thus effectively eliminating acidic water vapor, solid impurities, VOCs and other substances in the high-temperature exhaust steam. It will not affect the atmospheric environment, so that the discharged gas will not have a white fog / white smoke effect, and at the same time, the temperature of the discharged dry exhaust steam is relatively low, thereby meeting the emission standards, which is more energy-saving and environmentally friendly. Attached image description:

[0019] Figure 1This is a schematic diagram of the present invention;

[0020] Figure 2 This is a perspective view of the present invention;

[0021] Figure 3 This is a perspective view of the present invention from another angle;

[0022] Figure 4 This is a cross-sectional view of the present invention;

[0023] Figure 5 This is a cross-sectional view from another perspective of this utility model;

[0024] Figure 6 This is a perspective view of the primary condenser module in this utility model;

[0025] Figure 7 This is a perspective view of the primary condensation module in this utility model from another angle;

[0026] Figure 8 This is a perspective view of the two-stage heating module in this utility model;

[0027] Figure 9 This is a perspective view of the two-stage heating module in this utility model from another angle;

[0028] Figure 10 This is a perspective view of the three-stage heat replenishment module in this utility model;

[0029] Figure 11 This is a perspective view of the three-stage heating module in this utility model. Detailed implementation method:

[0030] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0031] See Figure 1-11 As shown, a VOCs treatment and whitening system for condensed exhaust steam is provided, which includes: a VOCs treatment and whitening device 100 and an exhaust device 6.

[0032] The condensation VOCs treatment and whitening device 100 includes a housing 1 and a spray module 2 installed sequentially inside the housing 1 for spraying cooling water onto the exhaust steam for condensation whitening and VOCs treatment; a primary condensation module 3 for secondary condensation whitening and VOCs treatment of the exhaust steam; a secondary heating module 4 for heating the non-condensable exhaust steam formed after condensation for dehydration whitening; and a tertiary supplementary heating module 5 for steam heating the heated exhaust steam for secondary dehydration whitening. The first water inlet pipe 303 of the primary condensation module 3 is connected to... The cold water source 301, the first outlet pipe 304 of the first-stage condensing module 3 is connected to the hot water tank 302, the second-stage heating module 4 has a second inlet pipe 401 and a second outlet pipe 402 for introducing hot water; the third-stage supplementary heating module 5 has a steam inlet pipe 501 for introducing steam and a condensate outlet pipe 502 for discharging condensate; the outer shell 1 has an air inlet 101 and an air outlet 102 and a condensate collection pipe 108; the exhaust device 6 includes an exhaust fan 61 connected to the air outlet 102 of the outer shell 1 and an exhaust pipe 62 installed on the exhaust fan 61. In operation, this invention first uses a spray module 2 to spray cooling water onto the high-temperature exhaust steam entering the air inlet 101 of the outer casing 1 to cool and condense the steam, causing the acidic water vapor in the high-temperature exhaust steam to condense into condensate, achieving primary condensation and whitening. Simultaneously, the cooling water carries away VOCs from the high-temperature exhaust steam and integrates with the discharged condensate, achieving primary VOCs treatment. Then, the sprayed exhaust steam enters a primary condensation module 3, where it undergoes secondary condensation, achieving secondary condensation and whitening. The condensate formed during this process also removes VOCs from the exhaust steam. The non-condensable exhaust steam is carried away to achieve the purpose of secondary VOCs treatment. Then, the non-condensable exhaust steam that has passed through the secondary condensation enters the secondary heating module 4, where it is heated to remove water and eliminate white smoke. Finally, the exhaust steam heated by the secondary heating module 4 enters the tertiary supplementary heating module 5. If the exhaust steam does not reach the predetermined exhaust temperature, the tertiary supplementary heating module 5 will reheat the exhaust steam to reach the predetermined exhaust temperature and achieve dehumidification. At the same time, it will again achieve dehydration and eliminate white smoke, reducing visible white smoke. Finally, the exhaust steam treated by the exhaust fan 61 is drawn to the exhaust pipe 62 and discharged into the atmosphere from the exhaust pipe 62.In other words, this invention first sprays cooling water onto the high-temperature exhaust steam entering the air inlet 101 of the outer casing 1 through the spray module 2, achieving the purpose of condensation and whitening and VOCs treatment, with the best condensation and whitening effect and the best VOCs treatment effect; then the primary condensation module 3 performs secondary condensation and whitening and VOCs treatment on the exhaust steam; finally, the secondary heating module 4 heats the exhaust steam once or in combination with the tertiary supplementary heating module 5 to achieve dehumidification, while also achieving dehydration and whitening, reducing visible white smoke, and thus effectively eliminating acidic water vapor, solid impurities, VOCs and other substances in the high-temperature exhaust steam. It will not affect the atmospheric environment, so that the discharged gas will not have a white mist / white smoke effect, and at the same time, the temperature of the discharged dry exhaust steam is relatively low, thereby meeting emission standards, making it more energy-saving and environmentally friendly.

[0033] The spray module sprays cooling water onto the high-temperature exhaust steam, which can also remove impurities such as lees residue in the high-temperature exhaust steam. This can reduce the pollution of the primary condensing module 3, the secondary heating module 4, and the tertiary heat replenishment module 5, reduce the scaling rate, and thus reduce the flushing cycle of the primary condensing module 3, the secondary heating module 4, and the tertiary heat replenishment module 5.

[0034] In the first step, the spray module does not continuously spray cooling water onto the high-temperature exhaust steam for a long time, but instead uses intermittent spraying of cooling water, which can reduce water waste.

[0035] Intermittent spraying of cooling water includes at least two methods:

[0036] The first method involves the spraying module spraying cooling water onto the high-temperature exhaust steam at 5-10 hour intervals for 20-40 minutes. Of course, the spraying interval and spraying time of the spraying module can be adjusted according to different usage requirements to meet different needs.

[0037] The second method involves detecting the concentration of VOCs carried away by the sprayed cooling water. If the concentration exceeds the design value, the spray module is activated to spray cooling water onto the high-temperature exhaust steam.

[0038] The air inlet 101 of the outer shell 1 enters the interior of the liquor brewing workshop through the pipe 107 and is used to collect the exhaust steam generated by the automatic cooling machine and the still.

[0039] The outer shell 1 has a rectangular longitudinal section, and the primary condensing module 3, secondary heating module 4, and tertiary heat replenishment module 5 are also rectangular. This ensures a stable assembly structure and allows the outer shell 1 to maximize the passage of exhaust steam. The primary condensing module 3, secondary heating module 4, and tertiary heat replenishment module 5 have equal lengths and heights, while their widths gradually decrease. This design allows for a more compact system / module structure and smaller size, facilitating transportation, while ensuring optimal condensation, whitening, and VOCs treatment effects.

[0040] The outer casing 1 is equipped with a first temperature sensor 103, a second temperature sensor 104, a third temperature sensor 105, and a fourth temperature sensor 106. The first temperature sensor 103 is located in front of the primary condensing module 3, the second temperature sensor 104 is located between the primary condensing module 3 and the secondary heating module 4, the third temperature sensor 105 is located between the secondary heating module 4 and the tertiary supplementary heating module 5, and the fourth temperature sensor 106 is located behind the tertiary supplementary heating module 5. This invention uses the first temperature sensor 103, the second temperature sensor 104, the third temperature sensor 105, and the fourth temperature sensor 106 to detect the temperature of the exhaust steam at each stage, enabling the invention to better condense, eliminate whitening, and treat VOCs from the exhaust steam. For example, when the first temperature sensor 103 detects that the temperature of the exhaust steam entering the first-stage condensing module 3 is too high, the temperature of the exhaust steam can be controlled to a suitable temperature by controlling the spraying module 2 to spray cool water at a lower temperature or by controlling the spraying speed / amplitude / area of ​​the spraying module 2, so that the subsequent first-stage condensing module 3 can better achieve condensation and whitening and VOCs treatment of the exhaust steam. Similarly, when the second temperature sensor 104 detects that the temperature of the exhaust steam entering the secondary heating module 4 does not reach the set value, it can control the temperature and flow rate of the cold medium (cold water) introduced into the primary condensing module 3, thereby controlling the temperature of the exhaust steam entering the secondary heating module 4 to reach the set value; the third temperature sensor 105 detects the temperature of the exhaust steam entering the tertiary supplementary heating module 5. When it does not reach the predetermined value (e.g., above 65°C), it controls the tertiary supplementary heating module 5 to work, heating the exhaust steam to achieve the supplementary heating effect. The fourth temperature sensor 106 detects that the temperature of the exhaust steam entering the exhaust device 6 reaches the preset value (e.g., above 65°C), ensuring the whitening effect; when the third temperature sensor 105 detects that the temperature of the exhaust steam entering the tertiary supplementary heating module 5 reaches the predetermined value (e.g., above 65°C), the tertiary supplementary heating module 5 can be turned off to save energy. The fourth temperature sensor 106 is used to detect the temperature of the exhaust steam after passing through the three-stage heat replenishment module 5. If the temperature of the exhaust steam does not reach the preset value (e.g., above 65°C), the three-stage heat replenishment module 5 is controlled to improve its working efficiency, such as by increasing the steam flow rate, so that the temperature of the exhaust steam after passing through the three-stage heat replenishment module 5 reaches the preset value (e.g., above 65°C), thus ensuring the whitening effect.

[0041] The spray module 2 includes a spray pipe 21 extending laterally along the side of the outer casing 1 and several spray heads 22 mounted on the spray pipe 21. The spray heads 22 are located behind the air inlet 101 and at the front of the primary condenser module 3. Because the spray pipe 21 is installed laterally on the outside of the outer casing 1, the overall system height is effectively reduced, facilitating later installation and use. The condensate collection pipe 108 is connected to a condensate tank 72, which is connected to the spray module 2 via a pump set to provide spray water to the spray module 2. This achieves the purpose of using recycled water, which is energy-saving and environmentally friendly.

[0042] The primary condensing module 3 includes a first plate 31 and a second plate 32, and a plurality of first condenser tubes 33 fixed between the first plate 31 and the second plate 32 and spaced apart. The first plate 31 and the second plate 32 are respectively embedded in the left and right grooves at the front end of the outer shell 1, forming a first chamber and a second chamber spaced apart from the outer shell 1. The two ends of the first condenser tubes 33 are open and connected to the first chamber and the second chamber respectively, and a condensation gap channel for exhaust steam to pass through is formed between the first condenser tubes 33. The primary condensing module 3 uses the first condenser tubes 33 to condense the exhaust steam passing through, which has low resistance and can handle a large air volume, that is, its flow rate can be made larger to meet the usage requirements. Among them, the first condenser tubes 33 are provided with first fins arranged in a spiral pattern on the outside, which can improve the heat exchange effect.

[0043] The outer side of the first plate 31 is provided with multiple spaced first partitions 311, which divide the first chamber into multiple spaced first transfer chambers 312. The outer side of the second plate 32 is provided with multiple spaced second partitions 321 that are offset from the first partitions 311, which divide the first chamber into spaced first liquid inlet chambers 322, several second transfer chambers 323, and a first liquid outlet chamber 324. The first liquid inlet chamber 322 is connected to the first first transfer chamber 312 through at least one row of first condenser pipes 33. The second transfer chamber 323 is connected to the first transfer chamber 312 located in the middle through at least one row of first condenser pipes 33. The first liquid outlet chamber 324 is connected to the last first transfer chamber 312 through at least one row of first condenser pipes 33. The first water inlet pipe 303 is connected to the first liquid inlet chamber 322, and the first water outlet pipe 304 is connected to the first liquid outlet chamber 324. During operation, cold water is introduced through the first inlet pipe 303. After entering the first liquid inlet chamber 322, the cold water enters the first transfer chamber 312 through the inner holes of at least one row of first condenser tubes 33. The cold water in the first transfer chamber 312 enters the second transfer chamber 323 through the inner holes of at least one row of first condenser tubes 33. Through the interaction between the first transfer chamber 312 and the second transfer chamber 323, the cold water finally enters the first liquid outlet chamber 324 through the inner holes of at least one row of first condenser tubes 33 from the last first transfer chamber 312, and then flows out through the first water outlet pipe 304. When the cold water passes through the inner hole of any first condenser tube 33, it exchanges heat with the exhaust steam passing through the condensation gap channel, thus condensing the exhaust steam.

[0044] The cold water source is a high-level cold water tank, meaning it is located at a high level, allowing cold water to flow automatically down to the primary condensing module 3 without the need for a pump. The hot water tank 302 is a low-level hot water tank, located at a low level, allowing condensate from the primary condensing module 3 to flow automatically down to it, also without the need for a pump.

[0045] The secondary heating module 4 includes a third plate 41 and a fourth plate 42, multiple rows or columns of serpentine heating tubes 43 fixed between the third plate 41 and the fourth plate 42 and spaced apart for introducing hot water, an inlet cylinder 44 fixed to one end of the serpentine heating tubes 43 and interconnected with each other, and an outlet cylinder 45 fixed to the other end of the serpentine heating tubes 43 and interconnected with each other. The third plate 41 and the fourth plate 42 are respectively fixedly connected to the inner wall of the outer shell 1. The second water inlet pipe 401 is connected to the inlet cylinder 44, and the second water outlet pipe 45 is connected to the inlet cylinder 45. Pipe 402 is connected to liquid outlet cylinder 45. The serpentine heating tube 43 and the adjacent two serpentine heating tubes 43 each have a first heating gap channel for exhaust steam to pass through. During operation, hot water is introduced through the second water inlet pipe 401. After the hot water enters the liquid inlet cylinder 44, it simultaneously enters all the serpentine heating tubes 43. Then, after converging through the liquid outlet cylinder 45, it flows out from the second water outlet pipe 402. When cold water passes through the inner hole of any serpentine heating tube 43, it heats the exhaust steam passing through the first heating gap channel to heat the exhaust steam and achieve dehydration and whitening.

[0046] The serpentine heating tube 43 is provided with a second fin arranged in a spiral pattern on the outside, which can improve the heat exchange effect, that is, improve the heating effect of exhaust steam.

[0047] The second inlet pipe 401 is connected to the gelatinization waste heat recovery temporary storage water tank 71, and the second outlet pipe 402 is also connected to the gelatinization waste heat recovery temporary storage water tank 71. This simultaneous connection to the gelatinization waste heat recovery temporary storage water tank 71 achieves the purpose of sharing the tank. The gelatinization waste heat recovery temporary storage water tank 71 recovers the hot water generated during the gelatinization process, eliminating the need for an additional heat source and saving energy. The relatively low-temperature hot water flowing from the second outlet pipe 402 is also mixed with the hot water in the gelatinization waste heat recovery temporary storage water tank 71 after flowing into it.

[0048] The three-stage heat replenishment module 5 includes a fifth plate 51 and a sixth plate 52, and a plurality of heat replenishment pipes 53 fixed between the fifth plate 51 and the sixth plate 52 and spaced apart for introducing steam. The fifth plate 51 and the sixth plate 52 are respectively embedded in the left and right grooves at the rear end of the outer shell 1, forming a fifth chamber 510 and a sixth chamber 520 spaced apart from the outer shell 1. A third partition 521 is also provided at the middle of the outer side of the sixth plate 52, which divides the sixth chamber 520 into an upper chamber and a lower chamber. The upper chamber and the lower chamber are both connected to the fifth chamber 510 through the heat replenishment pipes 53. Furthermore, a second heating gap channel is formed between the heat exchange pipes 53 for the passage of exhaust steam. The steam inlet pipe 501 and the condenser outlet pipe 502 are respectively connected to the upper cavity and the lower cavity. During operation, high-temperature steam is introduced through the steam inlet pipe 501. The high-temperature steam enters the upper cavity and then enters all the upper heat exchange pipes 53. After passing through the upper heat exchange pipes 53, the steam enters the fifth chamber 510, and then enters the lower cavity from all the lower heat exchange pipes 53. The steam passing through the heat exchange pipes 53 heats the exhaust steam passing through the second heating gap channel, achieving the purpose of dehydration and whitening. The heating effect of this three-stage heat exchange module 5 is excellent and fast. In addition, due to the inclined distribution of the third baffle 521, it has a guiding effect, making the steam flow more rapid. The heat exchange pipes 53 are provided with a spirally distributed third fin, which can further increase the heat exchange effect.

[0049] The steam inlet pipe 501 is controlled by a first electric valve 503.

[0050] The outer casing 1 is mounted on the first frame 10, and the exhaust fan 61 is mounted on the second frame 60. The first frame 10 and the second frame 60 are spaced apart. The air outlet 102 of the outer casing 1 is connected to the exhaust port of the exhaust fan 61 via an axially folded flexible hose 611. The flexible hose 611 enables a fault-tolerant connection, ensuring a stable connection even if the air outlet 102 of the outer casing 1 and the exhaust port of the exhaust fan 61 are not on the same straight line.

[0051] The exhaust pipe 62 is provided with a bracket 621 and a water receiving tray 622 located outside the bracket 621 at its upper end. The bracket 621 is provided with a conical baffle 623 at its upper end. The lower edge of the baffle 623 protrudes from the outer periphery of the upper end of the exhaust pipe 62 and is placed directly above the water receiving tray 622. The lower end of the water receiving tray 622 is connected to a drain pipe 624. When the exhaust steam is discharged through the exhaust pipe 62, it will come into contact with the baffle 623 and be blocked by the baffle 623, so as to force the exhaust steam to pass laterally through the bracket 621 and then be discharged laterally. When the exhaust steam is on the baffle 623 and in cold weather, the exhaust steam can also achieve a condensation effect by contacting the cold baffle 623. The cooling water left by the condensation can be collected and dripped into the water receiving tray 622, and then collected by the water receiving tray 622 and discharged through the drain pipe 624. The upper end of the exhaust pipe 62 is also provided with a stainless steel filter screen 620, which plays a protective role and can prevent foreign objects from entering the exhaust pipe 62.

[0052] The applicant commissioned a testing company to test the air inlet and outlet.

[0053]

[0054] The test results are as follows:

[0055] Point Name methanol benzene Phenols formaldehyde unit Cooling down, bloating, and whitening. 2 0.118 ND 0.51 <![CDATA[mg / m 3 ]]> Cooling down, lack of energy, white exit 2 0.109 ND 0.45 <![CDATA[mg / m 3 ]]>

[0056] After treatment by the present invention, both benzene and formaldehyde are reduced and can meet the emission standards of the Integrated Emission Standard for Atmospheric Pollutants GB16297-1996.

[0057] It is worth mentioning that the main function of this invention is to achieve a highly effective whitening effect. That is, after treatment by this invention, the emitted gas is visually non-white or has a very low degree of whiteness, so that the emitted gas will not have a white fog / white smoke effect.

[0058] In summary, this invention first uses a spray module 2 to spray cooling water onto the high-temperature exhaust steam entering the air inlet 101 of the outer casing 1, achieving the purpose of condensation and whitening and VOCs treatment, with the best condensation and whitening effect and the best VOCs treatment effect; then, a primary condensation module 3 performs secondary condensation and whitening and VOCs treatment on the exhaust steam; finally, a secondary heating module 4 heats the exhaust steam once or in combination with a tertiary supplementary heating module 5 to achieve dehumidification, while simultaneously achieving dehydration and whitening, reducing visible white smoke, and thus effectively eliminating acidic water vapor, solid impurities, VOCs and other substances in the high-temperature exhaust steam. It does not affect the atmospheric environment, so the discharged gas will not have a white mist / white smoke effect, and the temperature of the discharged dry exhaust steam is relatively low, thus meeting emission standards, making it more energy-saving and environmentally friendly.

[0059] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A flash air condensing VOCs treatment and de-whitening system, characterized in that: It includes: A condensation VOCs treatment and whitening device (100) includes a housing (1) and a spray module (2) installed sequentially inside the housing (1) for spraying cooling water onto the exhaust steam for condensation whitening and VOCs treatment; a primary condensation module (3) for secondary condensation whitening and VOCs treatment of the exhaust steam; a secondary heating module (4) for heating the non-condensable exhaust steam formed after condensation for dehydration whitening; and a tertiary supplementary heating module (5) for steam heating the heated exhaust steam for secondary dehydration whitening. The primary condensation module... (3) The first water inlet pipe (303) is connected to the cold water source (301), the first water outlet pipe (304) of the first-stage condensing module (3) is connected to the hot water tank (302), the second-stage heating module (4) has a second water inlet pipe (401) and a second water outlet pipe (402) for introducing hot water; the third-stage heat replenishment module (5) has a steam inlet pipe (501) for introducing steam and a condensate outlet pipe (502) for discharging condensate; the outer shell (1) has an air inlet (101) and an air outlet (102) and a condensate collection pipe (108); The exhaust device (6) includes a blower (61) connected to the air outlet (102) of the housing (1) and an exhaust pipe (62) mounted on the blower (61).

2. The VOCs treatment and whitening system for condensing exhaust steam according to claim 1, characterized in that: The spray module (2) includes a spray pipe (21) that extends laterally through the outer side of the outer shell (1) and a number of spray heads (22) installed on the spray pipe (21). The spray head (22) is located behind the air inlet (101) and at the front end of the primary condensation module (3).

3. The spread-out live condensed VOCs handling and white smoke elimination system of claim 1, wherein: The first-stage condensing module (3) includes a first plate (31) and a second plate (32) and a plurality of first condensing tubes (33) fixed between the first plate (31) and the second plate (32) and spaced apart. The first plate (31) and the second plate (32) are respectively embedded in the left and right grooves at the front end of the outer shell (1) and form a first chamber and a second chamber spaced apart from the outer shell (1). The openings at both ends of the first condensing tubes (33) are respectively connected to the first chamber and the second chamber, and a condensing gap channel for exhaust steam to pass through is formed between the first condensing tubes (33).

4. The spread-out, uncharged condensing VOCs handling and white smoke elimination system of claim 3, wherein: The outer side of the first plate (31) is provided with multiple spaced first partitions (311), which divide the first chamber into multiple spaced first transfer chambers (312). The outer side of the second plate (32) is provided with multiple spaced second partitions (321) that are offset from the first partitions (311), which divide the first chamber into spaced first inlet chambers (322), several second transfer chambers (323), and a first outlet chamber (324). The first inlet chamber (322) and the first first transfer chamber (324) are arranged in a spaced manner. The transfer chamber (312) is connected to at least one row of first condenser tubes (33), the second transfer chamber (323) is connected to the first transfer chamber (312) located in the middle through at least one row of first condenser tubes (33), the first liquid outlet chamber (324) is connected to the last first transfer chamber (312) through at least one row of first condenser tubes (33), the first water inlet pipe (303) is connected to the first liquid inlet chamber (322), and the first water outlet pipe (304) is connected to the first liquid outlet chamber (324); the first condenser tube (33) is provided with first fins arranged in a spiral pattern on the outside.

5. The spread-out, unheated condensing VOCs treatment and off-white elimination system of any one of claims 1-4, wherein: The secondary heating module (4) includes a third plate (41) and a fourth plate (42), as well as multiple rows or columns of serpentine heating tubes (43) fixed between the third plate (41) and the fourth plate (42) and spaced apart for introducing hot water, an inlet cylinder (44) fixed to one end of the serpentine heating tube (43) and interconnected with each other, and an outlet cylinder (45) fixed to the other end of the serpentine heating tube (43) and interconnected with each other. The third plate (41) and the fourth plate (42) are respectively fixedly connected to the inner wall of the outer shell (1). The second water inlet pipe (401) is connected to the inlet cylinder (44), and the second water outlet pipe (402) is connected to the outlet cylinder (45). The serpentine heating tube (43) and the two adjacent serpentine heating tubes (43) each have a first heating gap channel for exhaust steam to pass through. The serpentine heating tube (43) is provided with a second fin that is spirally distributed on the outside.

6. The spread-out, unheated condensing VOCs treatment and off-white elimination system of any one of claims 1-4, wherein: The three-stage heat replenishment module (5) includes a fifth plate (51) and a sixth plate (52), and a plurality of heat replenishment pipes (53) fixed between the fifth plate (51) and the sixth plate (52) and spaced apart for introducing steam. The fifth plate (51) and the sixth plate (52) are respectively embedded in the left and right grooves at the rear end of the outer shell (1), forming a fifth chamber (510) and a sixth chamber (520) spaced apart from the outer shell (1). An inclined branch is also provided in the middle of the outer side of the sixth plate (52). The third partition (521) of the cloth divides the sixth chamber (520) into an upper chamber and a lower chamber distributed vertically. The upper chamber and the lower chamber are connected to the fifth chamber (510) through a heat supply pipe (53). A second heating gap channel for exhaust steam is formed between the heat supply pipes (53). The steam inlet pipe (501) and the condensate outlet pipe (502) are respectively connected to the upper chamber and the lower chamber. The heat supply pipe (53) is provided with a third fin that is spirally distributed on the outside.

7. The spread-out, unheated condensing VOCs treatment and off-white elimination system of any one of claims 1-4, wherein: The longitudinal section of the outer shell (1) is rectangular, and the first-stage condensing module (3), the second-stage heating module (4), and the third-stage heat replenishing module (5) are all rectangular. The length and height of the first-stage condensing module (3), the second-stage heating module (4), and the third-stage heat replenishing module (5) are all equal, and the width of the first-stage condensing module (3), the second-stage heating module (4), and the third-stage heat replenishing module (5) gradually decreases. The outer shell (1) is provided with a first temperature sensor (103), a second temperature sensor (104), a third temperature sensor (105), and a fourth temperature sensor (106). The first temperature sensor (103) is located in front of the first-stage condensing module (3), the second temperature sensor (104) is located between the first-stage condensing module (3) and the second-stage heating module (4), the third temperature sensor (105) is located between the second-stage heating module (4) and the third-stage heat replenishing module (5), and the fourth temperature sensor (106) is located behind the third-stage heat replenishing module (5).

8. The spread-out, uncharged condensing VOCs handling and white smoke elimination system of claim 7, wherein: The air outlet (102) of the outer casing (1) is connected to the air outlet of the exhaust fan (61) through an axially folded flexible hose (611). The outer casing (1) is mounted on a first frame (10), and the exhaust fan (61) is mounted on a second frame (60). The first frame (10) and the second frame (60) are spaced apart.

9. The VOCs treatment and whitening system for condensed exhaust steam according to claim 7, characterized in that: The cold water source is a high-level cold water tank, and the hot water tank (302) is a low-level hot water tank. The second inlet pipe (401) is connected to the gelatinization waste heat recovery temporary storage tank (71), and the second outlet pipe (402) is also connected to the gelatinization waste heat recovery temporary storage tank (71). The condensate collection pipe (108) is connected to the condensate tank (72), and the condensate tank (72) is connected to the spray module (2) through a pump group to provide spray water to the spray module (2).

10. The spread-out, unheated condensing VOCs treatment and off- white elimination system of any one of claims 1-4, wherein: The upper end of the exhaust pipe (62) is provided with a bracket (621) and a water receiving tray (622) located outside the bracket (621). The upper end of the bracket (621) is provided with a conical cap (623). The lower edge of the cap (623) protrudes from the outer periphery of the upper end of the exhaust pipe (62) and is placed directly above the water receiving tray (622). The lower end of the water receiving tray (622) is connected to a sewage pipe (624). The upper end of the exhaust pipe (62) is also provided with a stainless steel filter screen (620).

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