Heat-conducting oil furnace flue gas separating, cooling and extracting device based on emission reduction

Abstract

The invention discloses a heat-conducting oil furnace flue gas separating, cooling and extracting device based on emission reduction, which comprises a shell, a heat exchange box is mounted in the shell, a cooling box is mounted in the heat exchange box, a heat exchange assembly is arranged on one side of the cooling box, and a plurality of partition plates are mounted in the cooling box. The multiple partition plates are arranged in an up-down staggered mode and form a cooling channel used for flue gas flowing. By arranging the efficient heat exchange assembly and the spraying system, large particle impurities or oil stains in flue gas can be greatly reduced, the actual spraying area and the contact area of the flue gas are greatly increased in cooperation with a cooling channel in the spraying system, the separation effect is improved, and the separation efficiency is improved in cooperation with the interior of the filtering tank body. The temperature of the flue gas can be effectively reduced, moisture in the flue gas can be effectively separated, so that the capture rate of carbon dioxide is remarkably improved, and meanwhile, the flue gas treated by the device is high in carbon dioxide purity and low in impurity content, and can be directly applied to the fields of other industrial production processes, food processing and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of separation cooling devices, and more specifically, to a separation cooling and extraction device for flue gas from a thermal oil furnace for emission reduction. Background Art

[0002] Industrial production is an important component of the national economy, but its rapid development has also brought serious environmental problems, one of which is excessive carbon dioxide emissions. Thermal oil boilers, as a common heating equipment, are widely used in many industries. The flue gas they produce during operation contains large amounts of greenhouse gases such as carbon dioxide, which puts a great deal of pressure on the environment. Currently, reducing industrial carbon dioxide emissions has become a top priority.

[0003] Existing flue gas separation, cooling and extraction devices have many shortcomings: on the one hand, the carbon capture rate is low and cannot meet the stringent emission requirements. Traditional devices mostly focus on the simple recovery of heat in the flue gas and the sedimentation of large particulate pollutants. There is a lack of effective targeted capture methods for key greenhouse gases such as carbon dioxide, resulting in a large amount of carbon dioxide still being discharged into the atmosphere with the flue gas, making it difficult to achieve deep emission reductions. On the other hand, the impurity content of the discharged gas is high, making it difficult to use it directly in other industrial production processes or civilian purposes, limiting the potential for resource utilization of flue gas and making it impossible to form an efficient circular economy model. This causes waste of resources while increasing the production costs and environmental burden of enterprises. In addition, some existing devices have problems such as high energy consumption, complex maintenance, and insufficient stability during operation, which further affects their application effect and promotion value in actual industrial production.

[0004] Therefore, in view of this, the inventor, adhering to many years of rich experience in design, development and actual production in the relevant industry, has studied and improved the existing structure and deficiencies, and provided a flue gas separation, cooling and extraction device for thermal oil furnaces for emission reduction, in order to achieve a more practical purpose. Summary of the Invention

[0005] To overcome the above-mentioned shortcomings of the prior art, an embodiment of the present invention provides a flue gas separation, cooling and extraction device based on a thermal oil furnace for emission reduction. By providing an efficient heat exchange component and a spray system, it is possible to significantly reduce large particulate impurities or oil stains in the flue gas. In conjunction with the cooling channels in the spray system, the actual spraying and contact area of ​​the flue gas are greatly increased, thereby improving the separation effect. In conjunction with the filter tank body, it can effectively reduce the temperature of the flue gas and separate the moisture therein, thereby significantly improving the carbon dioxide capture rate. At the same time, the flue gas treated by this device has high carbon dioxide purity and low impurity content, and can be directly used in other industrial production processes, food processing and other fields, realizing the resource utilization of flue gas, reducing the production costs of enterprises, and reducing environmental pollution. In addition, by setting the internal hollow space of multiple partitions, optimizing the cooling channel design and using high thermal conductivity materials, the heat exchange efficiency is improved and the energy consumption of the cooling system is reduced. At the same time, the compact design and efficient operation of the device reduce the maintenance workload and frequency, reduce the overall operating cost, and further enhance the practicality of the device to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for separating, cooling and extracting flue gas from a heat-conducting oil furnace for emission reduction, comprising a shell, a heat exchange box installed inside the shell, a cooling box installed inside the heat exchange box, a heat exchange component provided on one side of the cooling box, a plurality of partitions installed inside the cooling box, the plurality of partitions being staggered up and down to form a cooling channel for the flow of flue gas, and a spray head for spraying and cooling is provided at each corner of the cooling channel to increase the contact time with the flue gas, and the upper part of the plurality of spray heads is commonly A conveying mechanism for conveying cooling medium is provided, and the two ends of the cooling channel are respectively connected to a smoke inlet pipe and a smoke outlet pipe, the other end of the smoke outlet pipe is connected to a filter tank body for separating oil smoke particles, and a diversion baffle for uniform smoke flow is provided at the smoke outlet of the filter tank body, the smoke outlet of the filter tank body is connected to a connecting pipe, the other end of the connecting pipe is connected to a Roots blower, the output end of the Roots blower is connected to an elastic joint, the other end of the elastic joint is connected to an outlet muffler, and the other end of the outlet muffler is connected to an output component.

[0007] Preferably, the heat exchange assembly includes a heat exchange cavity formed between the heat exchange box and the cooling box, and the interior of the heat exchange cavity is provided with a heat exchange tube and an output tube for the flue gas to enter and exit. The other ends of the heat exchange tube and the output tube both pass through the heat exchange box and extend to the outside of the shell for circulating and transporting the heat exchange medium.

[0008] Preferably, the conveying mechanism includes water inlet pipes that are connected to the spray heads, one side of the water inlet pipes is connected to an input pipe, the other end of the input pipes is connected to a water collecting tank, one side of the input pipes is connected to a spray pump, and a drainage cavity that is connected to the interior of the cooling channel is provided below the inner wall of the cooling box for storing spray water. The bottom of the cooling box is connected to a circulation pipe and is connected to the interior of the drainage cavity for discharging spray water.

[0009] Preferably, the output end of the spray pump is provided with a first control valve, one end of the first control valve is connected to the inside of the input pipe, and the input valve is installed on one side of the water collecting tank.

[0010] Preferably, the filter tank body includes a separation tank, the diversion baffle is fixedly installed at the smoke outlet of the separation tank, the connecting pipe is connected to the smoke outlet of the separation tank, and a filter assembly is provided below the diversion baffle.

[0011] Preferably, the discharge end of the separation tank is connected to a discharge pipe, and a third control valve is connected to one side of the discharge pipe. The cooled flue gas enters from the bottom of the filter assembly under the suction of the Roots blower, and the suction is evenly diverted by the diversion baffle to improve the service life of the filter assembly. The heavier substances fall to the bottom of the inner wall of the separation tank to be discharged centrally through the discharge pipe.

[0012] Preferably, the output component includes a one-way valve connected to the outlet silencer, the other end of the one-way valve is connected to a metal tube float flowmeter, the other end of the metal tube float flowmeter is connected to a delivery pipe, and the other end of the delivery pipe passes through the shell and extends to the outside.

[0013] Preferably, one side of the delivery pipe is connected to a branch pipe, and one side of the branch pipe and the delivery pipe are both connected to a second control valve for individually controlling the delivery flow rate.

[0014] Preferably, lifting ears are relatively installed on the top of the shell, and an inspection door for internal maintenance of the equipment is hinged on one side of the shell. The input end of the smoke inlet pipe is connected to an air inlet fan to ensure smooth transportation of smoke.

[0015] Preferably, the interiors of the plurality of partitions are all hollow, and the plurality of partitions are all made of high thermal conductivity materials, thereby increasing the heat exchange area and improving the heat exchange efficiency.

[0016] Technical effects and advantages of the present invention:

[0017] 1. The present invention can greatly reduce large particulate matter, impurities, or oil pollution in the flue gas by providing an efficient heat exchange component and a spray system. In conjunction with the cooling channel in the spray system, the actual spray area and contact area of ​​the flue gas are greatly increased, thereby improving the separation effect. In conjunction with the filter tank, it can effectively reduce the temperature of the flue gas and separate the moisture therein, thereby significantly improving the capture rate of carbon dioxide. At the same time, the flue gas treated by this device has high carbon dioxide purity and low impurity content, and can be directly used in other industrial production processes, food processing and other fields, realizing the resource utilization of flue gas, reducing the production cost of enterprises, and reducing environmental pollution.

[0018] 2. The present invention improves heat exchange efficiency and reduces energy consumption of the cooling system by setting multiple baffles with hollow interiors, optimizing cooling channel design, and using high thermal conductivity materials. At the same time, the compact design and efficient operation of the device reduce maintenance workload and frequency, thereby reducing overall operating costs.

[0019] 3. The present invention facilitates the maintenance and overhaul of the equipment by providing structures such as an inspection door and a lifting lug, further improving the reliability of the system. In addition, a branch pipe is connected to the delivery pipe, and a second control valve is connected on one side thereof, making it convenient to use the formed liquid CO2 in multiple fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 Schematic diagram of the internal cross-sectional structure of the present invention;

[0022] Figure 3 Schematic diagram of the cross-sectional connection structure of the delivery pipe, the branch pipe and the second control valve of the present invention;

[0023] Figure 4 Schematic diagram of the cross-sectional connection structure of the input pipe, water collecting tank, spray pump and first control valve of the present invention;

[0024] Figure 5 It is a front structural schematic diagram of the present invention.

[0025] The accompanying drawings are marked as follows: 1. Shell; 2. Heat exchange box; 3. Cooling box; 4. Heat exchange chamber; 5. Heat exchange tube; 6. Output pipe; 7. Partition; 8. Cooling channel; 9. Drain chamber; 10. Circulation pipe; 11. Sprinkler head; 12. Water inlet pipe; 13. Input pipe; 14. Water collecting tank; 15. Spray pump; 16. First control valve; 17. Input valve; 18. Smoke inlet pipe; 20. Smoke outlet pipe; 21. Separation tank; 22. Diverter baffle; 23. Filter assembly; 24. Drain pipe; 25. Connecting pipe; 26. Roots blower; 27. Elastic joint; 28. Outlet silencer; 29. ​​One-way valve; 30. Delivery pipe; 31. Branch pipe; 32. Second control valve; 33. Lifting ear; 34. Air inlet fan; 35. Inspection door. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] As attached Figure 1 To the attached Figure 5 The device for separating, cooling and extracting flue gas from a heat transfer oil furnace for emission reduction shown in the figure comprises a shell 1, a heat exchange box 2 is installed inside the shell 1, a cooling box 3 is installed inside the heat exchange box 2, a heat exchange component is provided on one side of the cooling box 3, a plurality of partitions 7 are installed inside the cooling box 3, the plurality of partitions 7 are staggered up and down to form a cooling channel 8 for flue gas flow, and a spray head 11 for spraying cooling is provided at each corner of the cooling channel 8 to increase the contact time with the flue gas, a conveying mechanism for conveying the cooling medium is provided above the plurality of spray heads 11, and a smoke inlet pipe 1 is connected to each end of the cooling channel 8. 8 and a smoke outlet pipe 20, the other end of the smoke outlet pipe 20 is connected to a filter tank for separating oil smoke particles, a diversion baffle 22 for uniform smoke flow is provided at the smoke outlet of the filter tank, the smoke outlet of the filter tank is connected to a connecting pipe 25, the other end of the connecting pipe 25 is connected to a Roots blower 26, the Roots blower 26 is integrated, the output end of the Roots blower 26 is connected to an elastic joint 27, the other end of the elastic joint 27 is connected to an outlet muffler 28, the other end of the outlet muffler 28 is connected to an output component, the cooling method of the heat exchange box 2 is a combination of air cooling and water cooling, and the internal structure of the heat exchange box 2 can transfer 10m 3 The flue gas is cooled from 170℃ to 40℃, and the expected cooling power is 1.3kw.

[0028] In this embodiment, the heat exchange component includes a heat exchange chamber 4 formed between the heat exchange box 2 and the cooling box 3. The interior of the heat exchange chamber 4 is provided with a heat exchange pipe 5 and an output pipe 6 for the flue gas to enter and exit. The other ends of the heat exchange pipe 5 and the output pipe 6 both pass through the heat exchange box 2 and extend to the outside of the shell 1 for circulating the heat exchange medium. The flue gas is preheated through the heat exchange component and heat exchanged through the heat exchange chamber 4. The circulating heating of the heat exchange medium is effectively utilized for life or other places, thereby improving energy utilization.

[0029] In this embodiment, the conveying mechanism includes a water inlet pipe 12, each of which is connected to the sprinkler head 11. One side of the water inlet pipe 12 is connected to an input pipe 13, the other end of the input pipe 13 is connected to a water collecting tank 14, and one side of the input pipe 13 is connected to a spray pump 15. A drainage cavity 9 connected to the interior of the cooling channel 8 is provided below the inner wall of the cooling box 3 for storing spray water. A circulation pipe 10 is connected to the bottom of the cooling box 3 and is connected to the interior of the drainage cavity 9 for discharging the spray water.

[0030] A first control valve 16 is provided at the output end of the spray pump 15 . One end of the first control valve 16 is connected to the interior of the input pipe 13 . An input valve 17 is installed at one side of the water collecting tank 14 .

[0031] In this embodiment, the filter tank body includes a separation tank 21, a diverter baffle 22 fixedly installed at the smoke outlet of the separation tank 21, a connecting pipe 25 is connected to the smoke outlet of the separation tank 21, and a filter assembly 23 is provided below the diverter baffle 22. The separation tank 21 is a vertical wire mesh separator for separating moisture, etc. from the flue gas;

[0032] The discharge end of the separation tank 21 is connected to a discharge pipe 24, and a third control valve is connected to one side of the discharge pipe 24. The cooled flue gas enters from the bottom of the filter assembly 23 under the suction of the Roots blower 26, and the suction is evenly diverted by the diverter baffle 22, thereby improving the service life of the filter assembly 23. The heavier substances fall to the bottom of the inner wall of the separation tank 21 and are discharged centrally through the discharge pipe 24. Through the above-mentioned separation structure, efficient separation, cooling, pressurization and flow control of the flue gas of the thermal oil furnace are achieved. According to actual application tests, the carbon capture rate of the device can reach more than 90%.

[0033] In this embodiment, the output assembly includes a one-way valve 29 connected to the outlet muffler 28, the other end of the one-way valve 29 is connected to a metal tube float flowmeter, the other end of the metal tube float flowmeter is connected to a delivery pipe 30, the other end of the delivery pipe 30 passes through the shell 1 and extends to the outside. It should be noted that the metal tube float flowmeter belongs to the prior art and is generally composed of an on-site indicator, a damper, a magnetic filter, etc., which is convenient for on-site intuitive display. One side of the delivery pipe 30 is connected to a branch pipe 31, and one side of the branch pipe 31 and the delivery pipe 30 are both connected to a second control valve 32 for separate By controlling the delivery flow rate, the power of the Roots blower is 0.5kw, which can increase the flue gas pressure from 500Pag to 2500Pag, so that the captured carbon dioxide product is in liquid form with high purity and stability. It can be widely used in other industrial fields, such as refrigerants, fire extinguishing agents, preservatives in food processing, etc., as well as in biological experiments such as culturing algae in laboratories. It provides strong support for the resource utilization of carbon dioxide, effectively reduces carbon dioxide emissions in industrial production processes, and is in line with current environmental protection policies and sustainable development requirements.

[0034] In this embodiment, a lifting lug 33 is relatively installed on the top of the shell 1, and the lifting lug 33 facilitates the transfer of the equipment position. A maintenance door 35 for internal maintenance of the equipment is hinged on one side of the shell 1, and the input end of the smoke inlet pipe 18 is connected to the air inlet fan 34 to ensure the smooth transportation of smoke.

[0035] In this embodiment, the interiors of the plurality of partitions 7 are all hollow, and the plurality of partitions 7 are all made of high thermal conductivity material, which increases the heat exchange area and improves the heat exchange efficiency.

[0036] Working principle of the present invention: Before the actual use of this equipment, first check whether the connections of various components of the equipment are firm, then start the equipment, turn on the air inlet fan 34, and transport the flue gas generated by the thermal oil furnace to the cooling channel 8 of the cooling box 3 through the smoke inlet pipe 18, start the spray pump 15, open the first control valve 16, and the water in the water collecting tank 14 is sprayed out from the spray head 11 through the input pipe 13 and the water inlet pipe 12 to spray and cool the flue gas in the cooling channel 8. While the cooling box 3 is spraying and cooling, the heat exchange component starts to work, and the heat exchange pipe 5 and the output pipe 6 in the heat exchange cavity 4 realize the circulation of the heat exchange medium, preheat and exchange the flue gas, and improve the energy utilization rate. In the cooling channel 8, the upper and lower staggered partitions 7 extend the flue gas flow path, and can be sprayed by the spray head 11 at each corner, which increases the contact time and area between the flue gas and the spray water, and fully cools the flue gas. The cooled flue gas enters the separation tank 21 of the filter tank body from the smoke outlet pipe 20. Under the suction of the Roots blower 26, the flue gas enters from the bottom of the filter assembly 23. The diverter baffle 22 evenly diverts the suction, protects the filter assembly 23, and prolongs its service life. The heavier substances fall to the bottom of the separation tank 21 and are regularly discharged through the sewage pipe 24 and the third control valve. At the same time, the filtered flue gas passes through the connecting pipe 25, the Roots blower 26, the elastic joint 27, and the outlet muffler 28 in sequence. The Roots blower 26 pressurizes the flue gas, and the outlet muffler 28 reduces the noise. After that, the flue gas enters the metal tube float flowmeter through the one-way valve 29. After the flow is monitored by the metal tube float flowmeter, it is output through the delivery pipe 30. If the output flow needs to be controlled, the second control valve 32 can be adjusted. The treated gas can also be transported to different places using the branch pipe 31.

[0037] Finally, during the operation of the equipment, the interior of the equipment is regularly inspected and maintained through the maintenance door 35. If the equipment needs to be moved, the lifting lug 33 on the top of the shell 1 can be used to replenish the water in the water collecting tank 14 when it is insufficient; if the filter component 23 is blocked or other components are damaged, clean or replace them in time.

[0038] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0039] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0040] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for separating, cooling and extracting flue gas from a thermal oil furnace for emission reduction, comprising a housing (1), characterized in that: A heat exchange box (2) is installed inside the shell (1), a cooling box (3) is installed inside the heat exchange box (2), a heat exchange component is provided on one side of the cooling box (3), a plurality of partitions (7) are installed inside the cooling box (3), the plurality of partitions (7) are staggered up and down to form a cooling channel (8) for flue gas flow, and a spray head (11) for spraying cooling is provided at each corner of the cooling channel (8) to increase the contact time with the flue gas, and a conveying mechanism for conveying the cooling medium is provided above the plurality of spray heads (11), and the two ends of the cooling channel (8) are respectively A smoke inlet pipe (18) and a smoke outlet pipe (20) are connected, the other end of the smoke outlet pipe (20) is connected to a filter tank body for separating oil smoke particles, a diversion baffle (22) for uniform smoke flow is provided at the smoke outlet of the filter tank body, the smoke outlet of the filter tank body is connected to a connecting pipe (25), the other end of the connecting pipe (25) is connected to a Roots blower (26), the output end of the Roots blower (26) is connected to an elastic joint (27), the other end of the elastic joint (27) is connected to an outlet muffler (28), and the other end of the outlet muffler (28) is connected to an output component.

2. The device for separating, cooling and extracting flue gas from a thermal oil furnace for emission reduction according to claim 1, characterized in that: The heat exchange assembly comprises a heat exchange chamber (4) formed between a heat exchange box (2) and a cooling box (3); a heat exchange pipe (5) and an output pipe (6) for flue gas inlet and outlet are provided inside the heat exchange chamber (4); the other ends of the heat exchange pipe (5) and the output pipe (6) both pass through the heat exchange box (2) and extend to the outside of the shell (1) for circulating and transporting the heat exchange medium.

3. The device for separating, cooling and extracting flue gas from a thermal oil furnace for emission reduction according to claim 1, characterized in that: The conveying mechanism includes a water inlet pipe (12) connected to the spray head (11), one side of the water inlet pipe (12) is connected to an input pipe (13), the other end of the input pipe (13) is connected to a water collecting tank (14), one side of the input pipe (13) is connected to a spray pump (15), a drainage cavity (9) connected to the inside of the cooling channel (8) is provided below the inner wall of the cooling box (3) for storing spray water, and a circulation pipe (10) is connected to the bottom of the cooling box (3) and is connected to the inside of the drainage cavity (9) for discharging the spray water.

4. The device for separating, cooling and extracting flue gas from a thermal oil furnace for emission reduction according to claim 3 is characterized in that: The output end of the spray pump (15) is provided with a first control valve (16), one end of the first control valve (16) is connected to the inside of the input pipe (13), and an input valve (17) is installed on one side of the water collecting tank (14).

5. The device for separating, cooling and extracting flue gas from a thermal oil furnace for emission reduction according to claim 1, characterized in that: The filter tank body comprises a separation tank (21), the diversion baffle (22) is fixedly mounted at the smoke outlet of the separation tank (21), the connecting pipe (25) is connected to the smoke outlet of the separation tank (21), and a filter assembly (23) is provided below the diversion baffle (22).

6. The device for separating, cooling and extracting flue gas from a thermal oil furnace for emission reduction according to claim 5, characterized in that: The sewage discharge end of the separation tank (21) is connected to a sewage discharge pipe (24), and one side of the sewage discharge pipe (24) is connected to a third control valve. The cooled flue gas enters from the bottom of the filter assembly (23) under the suction of the Roots blower (26), and the suction is evenly diverted by the diversion baffle (22), thereby improving the service life of the filter assembly (23). The heavier substances fall to the bottom of the inner wall of the separation tank (21) and are discharged in a centralized manner through the sewage discharge pipe (24).

7. The device for separating, cooling and extracting flue gas from a thermal oil furnace for emission reduction according to claim 1, characterized in that: The output assembly includes a one-way valve (29) connected to the outlet muffler (28), the other end of the one-way valve (29) is connected to a metal tube float flowmeter, the other end of the metal tube float flowmeter is connected to a delivery pipe (30), and the other end of the delivery pipe (30) passes through the housing (1) and extends to the outside.

8. The device for separating, cooling and extracting flue gas from a thermal oil furnace for emission reduction according to claim 7, characterized in that: One side of the delivery pipe (30) is connected to a branch pipe (31), and one side of the branch pipe (31) and the delivery pipe (30) are both connected to a second control valve (32) for individually controlling the delivery flow rate.

9. The device for separating, cooling and extracting flue gas from a thermal oil furnace for emission reduction according to claim 1, characterized in that: Lifting ears (33) are relatively mounted on the top of the shell (1), and an inspection door (35) for internal maintenance of the equipment is hinged on one side of the shell (1). The input end of the smoke inlet pipe (18) is connected to an air inlet fan (34) to ensure smooth transportation of smoke.

10. The device for separating, cooling and extracting flue gas from a thermal oil furnace for emission reduction according to claims 1-9, characterized in that: The interiors of the plurality of partitions (7) are all hollow, and the plurality of partitions (7) are all made of high thermal conductivity materials, thereby increasing the heat exchange area and improving the heat exchange efficiency.

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