A non-condensable gas de-whitening device suitable for use in a submerged combustion evaporation system

Abstract

The utility model relates to the technical field of noncondensable gas white elimination device, and disclose a kind of noncondensable gas white elimination device suitable for submerged combustion evaporation system, including the heating assembly for to noncondensable gas white elimination, heating assembly side is equipped with spray tower, the outside of spray tower is equipped with the air inlet pipe for with submerged combustion evaporation system outlet end communication;Heating assembly is equipped with cloth bag dust collector away from spray tower side;Heating assembly includes box, box outside is equipped with heat preservation layer, and the first baffle of several in heat preservation layer inner wall is fixed, and the burner of being located first baffle side is fixed in box side;By noncondensable gas in spray tower from bottom to top through packing layer, with the acid or alkaline liquid of spraying sufficient contact, liquid film and ascending airflow contact constantly, make gas flow liquid concentration reduce, realize the preliminary purification of noncondensable gas, effectively remove part of pollutant in noncondensable gas, subsequent processing step reduces burden, improves overall purification efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of non-condensable gas whitening devices, specifically a non-condensable gas whitening device suitable for immersion combustion evaporation systems. Background Technology

[0002] The non-condensable gas produced by the submerged combustion evaporation system mainly consists of air, ammonia, water, and small amounts of impurity gases such as VOCs. Since ammonia in the non-condensable gas is highly soluble in water and becomes alkaline after dissolving in water.

[0003] Existing non-condensable gases, after being treated by acid-alkali spray systems, may become saturated with water vapor due to the cooling effect of the spray. When these sprayed gases are discharged through exhaust pipes, they will quickly condense into white mist, commonly known as visible white smoke, once they encounter cold air. This white smoke phenomenon not only pollutes the surrounding environment visually, affecting the landscape and people's visual experience, but also contains deeper environmental hazards. White smoke often contains a small amount of particulate matter, which diffuses into the surrounding environment with the white smoke, causing adverse effects on the ecological environment and human health. Therefore, a non-condensable gas whitening device suitable for immersion combustion evaporation systems is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a non-condensable gas whitening device suitable for immersion combustion evaporation systems, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a non-condensable gas whitening device suitable for an immersion combustion evaporation system, comprising a heating component for whitening non-condensable gases, wherein a spray tower is provided on one side of the heating component, and an air inlet pipe is provided on the outside of the spray tower for communicating with the air outlet of the immersion combustion evaporation system.

[0006] A bag filter is installed on the side of the heating component away from the spray tower;

[0007] The heating component includes a housing, an insulation layer is fitted on the outside of the housing, a plurality of first baffles are fixed on the inner wall of the insulation layer, and a burner located on one side of the first baffles is fixed on one side of the housing.

[0008] The air inlet of the housing is connected to a second air outlet pipe, and the air outlet of the housing is connected to a first air outlet pipe. Several second baffles are fixed on the inner wall of the first air outlet pipe. Temperature sensors are fixed on the surface of the first and second air outlet pipes near the housing.

[0009] Preferably, the first and second air outlet pipes are both covered with a heat insulation layer, and the first and second baffles are fixed to the inner wall of the box and the inner wall of the first air outlet pipe, respectively, and the two are arranged alternately.

[0010] Preferably, the above-mentioned features include: a manhole on the outside of the spray tower; the air inlet of the second air outlet pipe connected to the top of the spray tower; a controller on one side of the housing; the output signal of the temperature sensor connected to the input signal of the controller; and the output signal of the controller connected to the input signal of the burner.

[0011] Preferably, the bottom of the spray tower is connected to a collection box via a pipe, and a liquid storage tank is fixed to one side of the collection box.

[0012] Preferably, the above-mentioned collection tank is equipped with a circulation pump, and the liquid storage tank is equipped with a water pump.

[0013] Preferably, the inner wall of the spray tower is fixed with a packing layer located above the air inlet pipe, and a spray pipe is provided above the packing layer. The spray pipe is connected to the liquid outlet of the water pump through a water pipe.

[0014] Preferably, the above-mentioned: a cover plate is provided on one side of the collection box, and screw holes are provided at the four corners of the cover plate. A sealing ring is fixed on one side of the back of the cover plate. When the bolt inside the screw hole is connected to the collection box, the sealing ring is used to seal the gap between the collection box and the cover plate.

[0015] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0016] 1. Non-condensable gas passes through the packing layer from bottom to top in the spray tower, making full contact with the sprayed acidic or alkaline liquid. The liquid film continuously contacts the rising airflow, reducing the concentration of the fluid in the airflow and achieving preliminary purification of the non-condensable gas. This effectively removes some pollutants from the non-condensable gas, reducing the burden on subsequent treatment steps and improving the overall purification efficiency.

[0017] II. The burner uses landfill biogas as a heat source. Biogas is injected into the combustion chamber through fuel nozzles, while air is simultaneously supplied through an air regulating valve. The biogas and air are premixed within the burner to form a flame that heats the non-condensable gases inside the chamber. An insulation layer is installed on the outside of the chamber to effectively prevent localized condensation caused by temperature drops during emission, thus avoiding adverse effects from condensation. The first baffle plate on the inner wall of the chamber and the second baffle plate on the inner wall of the first outlet pipe are arranged alternately, ensuring that the non-condensable gases can fully contact the heat source during heating. A temperature sensor detects the dew point temperature and transmits the signal to the controller. The controller adjusts the heating temperature of the burner based on the temperature sensor signal to ensure that the emission temperature of the non-condensable gases is always higher than the dew point, preventing condensation due to excessively low temperatures. The heated non-condensable gases enter a bag filter through the first outlet pipe. The bag filter traps particulate matter contained in the heated non-condensable gases. The gas discharged through the bag filter will not condense into white mist upon encountering cold air, reducing the amount of particulate matter emitted and further improving the purification level of the non-condensable gases, thus reducing environmental pollution.

[0018] 3. When cleaning the impurities accumulated inside the collection box, use a tool to unscrew the bolts on one side of the cover plate and remove the cover plate from the side of the collection box. Then you can clean the impurities accumulated inside the collection box. The detachable cover plate design facilitates the maintenance and cleaning of the inside of the collection box, avoids the impact of impurity accumulation on the normal operation of the system, extends the service life of the equipment, and also reduces the difficulty and cost of maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the main cross-sectional structure of the spray tower of this utility model;

[0022] Figure 3 This is a top view cross-sectional structural diagram of the box body of this utility model;

[0023] Figure 4 This is a schematic diagram of the liquid storage tank structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the cover plate structure of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Heating component; 101. Housing; 102. Insulation layer; 103. First baffle plate; 104. Second baffle plate; 105. Burner; 3. First exhaust pipe; 4. Temperature sensor; 5. Bag filter; 6. Spray tower; 7. Inlet pipe; 8. Manhole; 9. Second exhaust pipe; 10. Collection box; 11. Cover plate; 12. Liquid storage tank; 13. Screw hole; 14. Sealing ring; 15. Water pipe; 16. Water pump; 17. Circulation pump; 18. Packing layer; 19. Spray pipe. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce. Example

[0028] Please see Figure 1-5 This utility model provides a technical solution: a non-condensable gas whitening device suitable for an immersion combustion evaporation system, including a heating component 1 for whitening non-condensable gas, a spray tower 6 on one side of the heating component 1, and an air inlet pipe 7 on the outside of the spray tower 6 for communicating with the air outlet of the immersion combustion evaporation system.

[0029] A bag filter 5 is installed on the side of the heating component 1 furthest from the spray tower 6. The bag filter 5 is designed to trap particulate matter in the non-condensable gas after heating, thereby eliminating whitening of the non-condensable gas through further trapping of the particulate matter. The bag filter 5 uses PTFE (polytetrafluoroethylene) membrane filter bags. Pressure sensors (not shown in the figure) are installed before and after the bag filter 5. When the pressure difference reaches approximately 2 kPa, the air purging system is activated to clean the particulate matter from the filter bags.

[0030] The bag filter 5 contains multiple layers of filter bags or screens of different materials and pore sizes. The first layer uses a pre-filter material with a large pore size to intercept larger dust and impurities. The second layer is a medium-efficiency filter layer, which uses filter material with a certain filtration precision to further remove smaller particles. The third layer is a high-efficiency filter layer, which uses high-performance filter materials such as ultra-fine fiber filter bags to deeply filter tiny particles, effectively reducing the content of solid impurities in non-condensable gas and improving gas purity.

[0031] The heating component 1 includes a housing 101, which is made of a metal material with good corrosion resistance as the main frame. An insulation layer 102 is fitted on the outside of the housing 101. The insulation layer 102 is made of rock wool. The insulation layer 102 prevents local condensation caused by temperature drop during the discharge process. Several first baffles 103 are fixed on the inner wall of the insulation layer 102. A burner 105 is fixed on one side of the housing 101, located on one side of the first baffles 103. The burner 105 uses landfill biogas as a heat source. The burner 105 injects biogas into the combustion chamber through a fuel nozzle and simultaneously sends air into the combustion chamber through an air regulating valve. The biogas and air are premixed in the burner 105 to form a flame that heats the non-condensable gas in the housing 101.

[0032] The air inlet of the housing 101 is connected to a second air outlet pipe 9, and the air outlet of the housing 101 is connected to a first air outlet pipe 3. Several second baffles 104 are fixed on the inner wall of the first air outlet pipe 3. Temperature sensors 4 are fixed on the surface of the first air outlet pipe 3 and the second air outlet pipe 9 near the housing 101. The temperature sensors 4 detect the dew point temperature and adjust the heating temperature of the burner 105 to ensure that the non-condensable gas emission temperature is always 10-25℃ higher than the dew point, thus avoiding energy waste caused by overheating.

[0033] The outer sides of the first exhaust pipe 3 and the second exhaust pipe 9 are both covered with insulation layers 102. The first baffle plate 103 and the second baffle plate 104 are respectively fixed to the inner wall of the housing 101 and the inner wall of the first exhaust pipe 3, and the two are arranged alternately. The first baffle plate 103 and the second baffle plate 104 ensure that the temperature of the non-condensable gas after heating is uniform. The spray tower 6 is provided with a manhole 8 on the outside. The air inlet end of the second exhaust pipe 9 is connected to the top of the spray tower 6. A controller is provided on one side of the housing 101. The output signal of the temperature sensor 4 is connected to the input end of the controller. The output signal of the controller is connected to the input end of the burner 105.

[0034] The bottom of the spray tower 6 is connected to a collection box 10 via a pipe. A storage tank 12 is fixed to one side of the collection box 10. A circulation pump 17 is installed inside the collection box 10, and a water pump 16 is installed inside the storage tank 12. An acidic or alkaline liquid that needs to react with the non-condensable gas is added to the storage tank 12 in advance. A packing layer 18 is fixed on the inner wall of the spray tower 6 above the air inlet pipe 7. The soluble components in the gas phase of the packing layer 18 are absorbed by the absorbent liquid. A spray pipe 19 is installed above the packing layer 18, and water flows through the spray pipe 19. Pipe 15 is connected to the liquid outlet of water pump 16. Non-condensable gas enters from the air inlet pipe 7 of spray tower 6 and passes through the packing layer 18 from bottom to top. The spray liquid is sprayed from the spray pipe 19 to the packing layer 18 and then flows downward. The rising airflow and the falling spray liquid are in continuous contact, which reduces the concentration of fluid in the airflow. The non-condensable gas achieves the purification effect at the top of the equipment. The spray liquid flows into the collection box 10 by gravity and is extracted by the circulation pump 17 for recycling. The non-condensable gas treated by the acid and alkali spray system is discharged from the second air outlet pipe 9.

[0035] A cover plate 11 is provided on one side of the collection box 10. Screw holes 13 are provided at the four corners of the cover plate 11. A sealing ring 14 is fixed on one side of the back of the cover plate 11. When the bolt inside the screw hole 13 is connected to the collection box 10, the sealing ring 14 is used to seal the gap between the collection box 10 and the cover plate 11. When it is necessary to clean the impurities accumulated inside the collection box 10, simply use a tool to unscrew the bolt on one side of the cover plate 11, remove the cover plate 11 from one side of the collection box 10, and then clean the impurities accumulated inside the collection box 10.

[0036] The controller model is S7-1200 series, and the temperature sensor 4 model is TM501-B111C11C1BC4X1. Since the internal structure and operating principle of the controller and temperature sensor 4 are existing technologies, they will not be described in detail here.

[0037] Working principle: Non-condensable gas enters the spray tower 6 from the outlet of the submerged combustion evaporation system through the inlet pipe 7. Inside the spray tower 6, the non-condensable gas passes through the packing layer 18 from bottom to top. Acid or alkaline liquid that needs to react with the non-condensable gas is added to the storage tank 12 in advance. The water pump 16 extracts the liquid and delivers it to the spray pipe 19 through the water pipe 15. The spray pipe 19 sprays the liquid onto the packing layer 18 to form a liquid film. The spray liquid flows into the collection tank 10 by gravity. The rising airflow and the falling spray liquid are in continuous contact, which reduces the concentration of the liquid in the airflow. The non-condensable gas achieves the effect of preliminary purification inside the spray tower 6.

[0038] The non-condensable gas treated by the spray tower 6 enters the housing 101 of the heating component 1 through the second gas outlet pipe 9. The burner 105 uses landfill biogas as a heat source. Biogas is injected into the combustion chamber through the fuel nozzle, and air is sent into the combustion chamber through the air regulating valve. The biogas and air are premixed in the burner 105 to form a flame to heat the non-condensable gas in the housing 101. The outer side of the housing 101 is covered with a heat insulation layer 102 to prevent local condensation caused by temperature drop during the discharge process. The first baffle 103 on the inner wall of the housing 101 and the second baffle 104 on the inner wall of the first gas outlet pipe 3 are arranged alternately to ensure that the temperature of the heated non-condensable gas is uniform.

[0039] Temperature sensors 4 are fixed on the surfaces of the first and second exhaust pipes 3 and 9 near the housing 101. The temperature sensors 4 detect the dew point temperature and transmit the signal to the controller. The controller adjusts the heating temperature of the burner 105 according to the signal from the temperature sensors 4 to ensure that the non-condensable gas emission temperature is always 10-25°C higher than the dew point, thus avoiding energy waste caused by overheating. The heated non-condensable gas enters the bag filter 5 through the first exhaust pipe 3. The bag filter 5 traps the particulate matter contained in the heated non-condensable gas. The gas discharged through the bag filter 5 will not condense into white mist when it encounters cold air, thus reducing the amount of particulate matter emitted.

[0040] The collection tank 10 is equipped with a circulation pump 17, which is used to circulate the spray liquid, so that the liquid that has participated in the reaction in the spray tower 6 can be reused, reducing the amount of fresh liquid to be replenished, reducing the processing cost, and improving the utilization rate of the liquid. When it is necessary to clean the impurities accumulated inside the collection tank 10, use a tool to unscrew the bolts on one side of the cover plate 11 and remove the cover plate 11 from one side of the collection tank 10. Then the impurities accumulated inside the collection tank 10 can be cleaned. A sealing ring 14 is fixed on one side of the back of the cover plate 11. When the bolt inside the screw hole 13 is connected to the collection tank 10, the sealing ring 14 is used to seal the gap between the collection tank 10 and the cover plate 11.

[0041] In summary, by passing through the packing layer 18 from bottom to top in the spray tower 6, the non-condensable gas comes into full contact with the sprayed acidic or alkaline liquid. The liquid film continuously contacts the rising airflow, reducing the concentration of the fluid in the airflow and achieving preliminary purification of the non-condensable gas. This effectively removes some pollutants from the non-condensable gas, reduces the burden on subsequent treatment steps, and improves the overall purification efficiency.

[0042] The burner 105 uses landfill biogas as a heat source. Biogas is injected into the combustion chamber through a fuel nozzle, while air is simultaneously supplied to the combustion chamber through an air regulating valve. The biogas and air are premixed within the burner 105, forming a flame that heats the non-condensable gases within the housing 101. An insulation layer 102 is fitted over the outer side of the housing 101 to effectively prevent localized condensation caused by temperature drops during emission, thus avoiding adverse effects. The first baffle 103 on the inner wall of the housing 101 and the second baffle 104 on the inner wall of the first outlet pipe 3 are arranged alternately, ensuring that the non-condensable gases are fully heated during the heating process. When in contact with a heat source, temperature sensor 4 detects the dew point temperature and transmits the signal to the controller. The controller adjusts the heating temperature of burner 105 according to the signal from temperature sensor 4 to ensure that the non-condensable gas emission temperature is always higher than the dew point, thus avoiding condensation due to excessively low temperature. The heated non-condensable gas enters bag filter 5 through the first outlet pipe 3. Bag filter 5 traps particulate matter contained in the heated non-condensable gas. The gas discharged through bag filter 5 will not condense into white mist when it encounters cold air, reducing the amount of particulate matter emitted, further improving the purification level of non-condensable gas, and reducing environmental pollution.

[0043] When cleaning the impurities accumulated inside the collection box 10, use a tool to unscrew the bolts on one side of the cover plate 11 and remove the cover plate 11 from one side of the collection box 10. Then, the impurities accumulated inside the collection box 10 can be cleaned. The detachable cover plate design facilitates the maintenance and cleaning of the inside of the collection box 10, avoids the impact of impurity accumulation on the normal operation of the system, extends the service life of the equipment, and also reduces the difficulty and cost of maintenance.

[0044] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A non-condensable gas whitening device suitable for an immersion combustion evaporation system, comprising a heating component (1) for whitening non-condensable gases, characterized in that: The heating component (1) is provided with a spray tower (6) on one side, and an air inlet pipe (7) is provided on the outside of the spray tower (6) for connecting with the air outlet of the immersion combustion evaporation system. A bag filter (5) is provided on the side of the heating component (1) away from the spray tower (6); The heating component (1) includes a housing (101), an insulation layer (102) is provided on the outside of the housing (101), a plurality of first baffles (103) are fixed on the inner wall of the insulation layer (102), and a burner (105) located on one side of the first baffles (103) is fixed on one side of the housing (101). The air inlet of the box (101) is connected to a second air outlet pipe (9), and the air outlet of the box (101) is connected to a first air outlet pipe (3). Several second baffles (104) are fixed on the inner wall of the first air outlet pipe (3). Temperature sensors (4) are fixed on the surface of the first air outlet pipe (3) and the second air outlet pipe (9) near the box (101).

2. The non-condensable gas whitening device suitable for immersion combustion evaporation systems according to claim 1, characterized in that: The outer sides of the first air outlet pipe (3) and the second air outlet pipe (9) are both covered with a heat insulation layer (102). The first baffle plate (103) and the second baffle plate (104) are respectively fixed to the inner wall of the box body (101) and the inner wall of the first air outlet pipe (3), and the two are arranged alternately.

3. The non-condensable gas whitening device suitable for immersion combustion evaporation systems according to claim 1, characterized in that: The spray tower (6) is provided with a manhole (8) on the outside. The air inlet of the second air outlet pipe (9) is connected to the top of the spray tower (6). A controller is provided on one side of the box (101). The output signal of the temperature sensor (4) is connected to the input of the controller. The output signal of the controller is connected to the input of the burner (105).

4. The non-condensable gas whitening device suitable for submerged combustion evaporation systems according to claim 3, characterized in that: The bottom of the spray tower (6) is connected to a collection box (10) via a pipe, and a liquid storage tank (12) is fixed on one side of the collection box (10).

5. A non-condensable gas whitening device suitable for an immersion combustion evaporation system according to claim 4, characterized in that: The collection tank (10) is equipped with a circulation pump (17), and the storage tank (12) is equipped with a water pump (16).

6. A non-condensable gas whitening device suitable for an immersion combustion evaporation system according to claim 5, characterized in that: The inner wall of the spray tower (6) is fixed with a packing layer (18) located above the air inlet pipe (7), and a spray pipe (19) is provided above the packing layer (18). The spray pipe (19) is connected to the liquid outlet of the water pump (16) through a water pipe (15).

7. A non-condensable gas whitening device suitable for an immersion combustion evaporation system according to claim 6, characterized in that: The collection box (10) is provided with a cover plate (11) on one side. The cover plate (11) has screw holes (13) at all four corners. A sealing ring (14) is fixed on one side of the back of the cover plate (11). When the bolt inside the screw hole (13) is connected to the collection box (10), the sealing ring (14) is used to seal the gap between the collection box (10) and the cover plate (11).

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