Cooling and purifying device for high-temperature flue gas

Abstract

The utility model relates to the technical field of flue gas treatment, in particular to a high-temperature flue gas cooling and purifying device which comprises a first flue gas inlet, a cooling cavity, a device shell and a filter assembly, a first metal filter screen is arranged in the first flue gas inlet, the upper end of the first flue gas inlet is connected with the device shell, the cooling cavity is arranged in the device shell, and the filter assembly is arranged in the cooling cavity. A heat exchange pipe is arranged in the cooling cavity, a partition plate is arranged at the upper end of the cooling cavity, a filtering assembly is arranged at the upper end of the partition plate, and a dust storage cavity is formed in the filtering assembly. According to the device, the first smoke inlet generates suction force through high-speed rotation of the fan, so that smoke is sucked into the cooling cavity, the high-temperature smoke can be cooled to the normal temperature through the heat exchange pipe in the cooling cavity, the smoke enters the filtering assembly after being cooled to the normal temperature, and the filtering assembly can effectively block smoke dust in the dust storage cavity; the HEPA filter screen in the filter assembly can filter particles with the diameter being 0.3 micrometer or above in the air, and the filtering effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, and in particular to a cooling and purification device for high-temperature flue gas. Background Technology

[0002] In industrial production, many processes generate high-temperature flue gas containing large amounts of particulate matter and harmful substances, severely polluting the environment and endangering human health. To protect the environment and human health, flue gas cooling and dust removal technology has become an essential environmental protection device in industrial production. However, current flue gas dust removal devices cannot effectively reduce the temperature of the incoming flue gas, thus affecting the filtration effect. Furthermore, the filter layer is relatively simple and cannot meet environmental protection requirements. Therefore, it is necessary to improve current flue gas dust removal devices to solve the above problems.

[0003] The information disclosed in this background section is only for understanding the background technology of the inventive concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0004] The purpose of this invention is to provide a cooling and purification device for high-temperature flue gas, in order to solve the problems mentioned in the background art where the flue gas dust removal device cannot effectively reduce the temperature of the incoming flue gas, thus affecting the filtration effect, and the filter layer is relatively simple and cannot meet the requirements of environmental protection.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cooling and purification device for high-temperature flue gas includes a first flue gas inlet, a cooling chamber, a device housing, and a filter assembly. A first metal filter screen is disposed inside the first flue gas inlet. The upper end of the first flue gas inlet is connected to the device housing. The cooling chamber is disposed inside the device housing, and a heat exchange tube is disposed inside the cooling chamber. A baffle is disposed at the upper end of the cooling chamber, and a filter assembly is disposed at the upper end of the baffle. A dust storage chamber is disposed inside the filter assembly. A second flue gas inlet is disposed inside the cooling chamber, and an air inlet pipe is connected to the upper end of the second flue gas inlet. The air inlet pipe passes through the baffle and connects to the filter assembly. An air valve is disposed inside the air inlet pipe, and a fan is disposed at the upper end of the air valve.

[0007] As a preferred technical solution, the filter assembly is provided with a HEPA filter inside, and an activated carbon filter is provided at the upper end of the HEPA filter.

[0008] As a preferred technical solution, the upper end of the filter assembly is fixedly connected to the smoke exhaust, and a second metal filter screen is provided inside the smoke exhaust port.

[0009] As a preferred technical solution, a limiting block is fixedly connected to one side of the device housing.

[0010] The beneficial effects of this utility model are:

[0011] In this device, the high-speed rotation of the fan generates suction at the first flue gas inlet, drawing the flue gas into the cooling chamber. The heat exchange tubes inside the cooling chamber reduce the high-temperature flue gas to room temperature. Once the flue gas reaches room temperature, it enters the filter assembly. The filter assembly effectively traps dust in the dust storage chamber. The HEPA filter in the filter assembly can filter particles larger than 0.3 micrometers in diameter, including dust, smoke, pollen, bacteria, and other tiny particles, thereby purifying the flue gas and improving the filtration effect. The activated carbon filter can effectively remove odors and organic matter from the air, further improving the flue gas filtration effect and increasing the practicality of the device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a high-temperature flue gas cooling and purification device proposed in this utility model.

[0013] Figure 2 This is a schematic diagram of the filter assembly of a high-temperature flue gas cooling and purification device proposed in this utility model.

[0014] In the diagram: 1 First flue gas inlet, 2 First metal filter screen, 3 Heat exchange tube, 4 Cooling chamber, 5 Baffle plate, 6 Device shell, 7 Dust storage chamber, 8 Limiting block, 9 Flue gas outlet, 10 Second metal filter screen, 11 Filter assembly, 12 Fan, 13 Air valve, 14 Air inlet pipe, 15 Second flue gas inlet, 16 HEPA filter screen, 17 Activated carbon filter screen. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] Reference Figure 1-2 A cooling and purification device for high-temperature flue gas includes a first flue gas inlet 1, a cooling chamber 4, a device housing 6, and a filter assembly 11. A first metal filter screen 2 is provided inside the first flue gas inlet 1, and the upper end of the first flue gas inlet 1 is connected to the device housing 6.

[0019] The device housing 6 has a cooling chamber 4 inside, a heat exchange tube 3 inside the cooling chamber 4, a partition 5 at the upper end of the cooling chamber 4, a filter assembly 11 at the upper end of the partition 5, and a dust storage chamber 7 inside the filter assembly 11.

[0020] Furthermore, the cooling chamber 4 is provided with a second smoke inlet 15, the upper end of the second smoke inlet 15 is connected to the air inlet pipe 14, the air inlet pipe 14 passes through the partition 5 and is connected to the filter assembly 11, the air inlet pipe 14 is provided with an air valve 13, and the upper end of the air valve 13 is provided with a fan 12.

[0021] With this design, the high-speed rotation of the fan 12 causes the first flue gas inlet 1 to generate suction, thereby drawing the flue gas into the cooling chamber 4. The heat exchange tube 3 inside the cooling chamber 4 can reduce the high temperature flue gas to room temperature. When the flue gas is reduced to room temperature, it enters the filter assembly 11. The filter assembly 11 can effectively block the dust in the dust storage chamber 7.

[0022] The heat exchange tube 3 is a U-shaped tube, with one end connected to the bottom of the cooling chamber 4 and the other end connected to the top of the cooling chamber 4, forming a closed loop. The interior of the heat exchange tube 3 is filled with cooling water, with the inlet and outlet of the cooling water located at both ends of the heat exchange tube 3, and the flow rate and pressure of the cooling water controlled by valves and a pump. A flue gas passage is formed between the outer wall of the heat exchange tube 3 and the inner wall of the cooling chamber 4. The flue gas enters from the first flue gas inlet 1, exchanges heat with the heat exchange tube 3 along the flue gas passage, and then exits from the second flue gas inlet 15, entering the filter assembly 11.

[0023] When flue gas enters the cooling chamber 4 from the first inlet 1, a temperature difference exists between the flue gas and the heat exchange tube 3 because the flue gas temperature is higher than the cooling water temperature, thus generating heat flow. The heat flow direction is from the high-temperature flue gas to the low-temperature cooling water; therefore, the flue gas temperature gradually decreases, and the cooling water temperature gradually increases. When the flue gas exits from the second inlet 15, its temperature has dropped to near the cooling water temperature, achieving the cooling purpose. Simultaneously, the cooling water forms a circulation flow within the heat exchange tube 3, carrying the absorbed heat out of the cooling chamber 4 and exchanging heat with the external cooling system through the cooling water inlet and outlet, thereby maintaining the cooling water temperature within a certain range and enabling the heat exchange tubes to operate continuously.

[0024] In other embodiments, a HEPA filter 16 is disposed inside the filter assembly 11, and an activated carbon filter 17 is disposed at the upper end of the HEPA filter 16.

[0025] Through this design, the HEPA filter in filter assembly 11 can filter particles with a diameter of 0.3 micrometers or larger in the air, including dust, smoke, pollen, bacteria and other tiny particles, thereby purifying the flue gas and improving the filtration effect. The activated carbon filter can effectively remove odors and organic matter in the air, further improving the flue gas filtration effect.

[0026] In other embodiments, the upper end of the filter assembly 11 is fixedly connected to the smoke exhaust port 9, and a second metal filter screen 10 is provided inside the smoke exhaust port 9.

[0027] With this design, the second metal filter 10 inside the exhaust port 9 can effectively prevent large particles from falling into the device, thus avoiding blockage inside the device.

[0028] In other embodiments, a limiting block 8 is fixedly connected to one side of the device housing 6.

[0029] This design allows the limiting block 8 on one side of the device housing 6 to facilitate the installation of the cooling and dust removal device.

[0030] In this embodiment, the high-speed rotation of the fan 12 generates suction at the first flue gas inlet 1, thereby drawing the flue gas into the cooling chamber 4. The heat exchange tube 3 inside the cooling chamber 4 can reduce the high-temperature flue gas to room temperature. After the flue gas is reduced to room temperature, it enters the filter assembly 11. The filter assembly 11 can effectively block the dust in the dust storage chamber 7. The HEPA filter in the filter assembly 11 can filter particles with a diameter of 0.3 micrometers or larger in the air, including dust, smoke, pollen, bacteria and other tiny particles, thereby purifying the flue gas and improving the filtration effect. The activated carbon filter can effectively remove odors and organic matter in the air, further improving the flue gas filtration effect and increasing the practicality of the device.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-temperature flue gas cooling and purification device, comprising a first smoke inlet (1), a cooling chamber (4), a device housing (6) and a filter assembly (11), characterized in that: A first metal filter (2) is arranged inside the first smoke inlet (1); the upper end of the first smoke inlet (1) is connected to a device housing (6); a cooling chamber (4) is arranged inside the device housing (6); a heat exchange tube (3) is arranged inside the cooling chamber (4); a partition (5) is arranged at the upper end of the cooling chamber (4); a filter assembly (11) is arranged at the upper end of the partition (5); a dust storage chamber (7) is arranged inside the filter assembly (11); a second smoke inlet (15) is arranged inside the cooling chamber (4); the upper end of the second smoke inlet (15) is connected to an air inlet pipe (14); the air inlet pipe (14) passes through the partition (5) and is then connected to the filter assembly (11); an air valve (13) is arranged inside the air inlet pipe (14); a fan (12) is arranged at the upper end of the air valve (13).

2. A high-temperature flue gas cooling and purification device according to claim 1, characterized in that: A HEPA filter (16) is arranged inside the filter assembly (11), and an activated carbon filter (17) is arranged at the upper end of the HEPA filter (16).

3. The high-temperature flue gas cooling and purification device according to claim 1, characterized in that: The upper end of the filter assembly (11) is fixedly connected to the smoke exhaust port (9), and a second metal filter screen (10) is arranged inside the smoke exhaust port (9).

4. The high-temperature flue gas cooling and purification device according to claim 1, characterized in that: A limiting block (8) is fixedly connected to one side of the device housing (6).

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