Flue gas desulfurization waste heat recovery device

Abstract

The utility model relates to the technical field of heat recovery, in particular to a flue gas desulfurization waste heat recovery device. According to the technical scheme, the device comprises a tank body used for storing water, and an air inlet pipe is arranged on the outer wall of the tank body in a communicating mode; the sealing partition plate is fixedly arranged on the inner wall of the tank body, and a linkage assembly used for stirring water is rotationally arranged on the sealing partition plate; the water inlet pipe and the water outlet pipe are arranged on the outer wall of the tank body in a communicating mode, and the water inlet pipe is located over the water outlet pipe; the upper end of the heat exchange tube penetrates through the sealing partition plate, and the lower end of the heat exchange tube penetrates through the tank body and extends to the outside. The low average water temperature can be kept all the time, so that the large temperature difference between water and flue gas is maintained, the heat transfer rate is effectively improved, the heat exchange efficiency of the whole waste heat recovery device is greatly improved, and waste heat in the flue gas can be more fully recovered.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat recovery technical field especially relates to flue gas desulfurization waste heat recovery device. BACKGROUND

[0002] In today's society, the efficient use of energy and environmental protection are increasingly valued, with the rapid development of industry, a large amount of energy is consumed in the production process, at the same time, a lot of waste heat resources are produced, industrial flue gas as a common waste heat carrier, contains a large amount of heat energy, if these waste heat cannot be effectively recycled and utilized, not only will cause the waste of energy, but also may have adverse effects on the environment, in the field of flue gas treatment, flue gas desulfurization is an important environmental protection measure, its purpose is to remove harmful gases such as sulfur dioxide in flue gas, in order to reduce air pollution, however, in the process of flue gas desulfurization, a large amount of waste heat carried by flue gas is usually directly discharged, which is undoubtedly a great waste of energy. The existing flue gas desulfurization waste heat recovery device is in contact with water through the heat exchange pipe arranged inside, so that the water absorbs the heat of the heat exchange pipe, thereby increasing the temperature of the water, which results in that the water temperature near the heat exchange pipe is high, and the temperature difference between the water and the flue gas gradually decreases, the decrease of the temperature difference will lead to the decrease of the heat transfer rate, and further the decrease of the heat exchange efficiency of the whole waste heat recovery device, which cannot fully recover the waste heat in the flue gas. Therefore, the utility model provides a flue gas desulfurization waste heat recovery device. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at the problem that the flue gas desulfurization waste heat recovery device in the background art is in contact with water through the heat exchange pipe arranged inside, so that the water absorbs the heat of the heat exchange pipe, thereby increasing the temperature of the water, which results in that the water temperature near the heat exchange pipe is high, and the temperature difference between the water and the flue gas gradually decreases, the decrease of the temperature difference will lead to the decrease of the heat transfer rate, and further the decrease of the heat exchange efficiency of the whole waste heat recovery device, which cannot fully recover the waste heat in the flue gas, and provides a flue gas desulfurization waste heat recovery device.

[0004] The utility model discloses a technical scheme: a flue gas desulfurization waste heat recovery device, comprising: a tank body for storing water, the outer wall of the tank body is communicated with an air inlet pipe; a sealing partition plate is fixedly arranged on the inner wall of the tank body, a linkage assembly for stirring water is rotatably arranged on the sealing partition plate; a water inlet pipe and a water outlet pipe are communicated with the outer wall of the tank body, and the water inlet pipe is located directly above the water outlet pipe; a heat exchange pipe is arranged in the tank body, the upper end of the heat exchange pipe penetrates through the sealing partition plate, and the lower end of the heat exchange pipe penetrates through the tank body and extends to the outside.

[0005] Optionally, the linkage assembly comprises a linkage rod rotatably sleeved on the sealing partition plate, the lower end of the linkage rod is rotatably connected with the inner bottom surface of the tank body, the upper end of the linkage rod is fixedly sleeved with a fan blade, the fan blade is located directly above the sealing partition plate, the lower end of the linkage rod is fixedly sleeved with a sleeve plate, and the upper surface of the sleeve plate is fixedly provided with a plurality of stirring blades, and the stirring blades are located directly below the sealing partition plate.

[0006] Optionally, the heat exchange pipe is spirally arranged, and the heat exchange pipe is sleeved with the linkage assembly.

[0007] Optionally, the outer wall of the tank body is fixedly provided with a filter for filtering flue gas, and the filter is in communication with the lower end of the heat exchange pipe.

[0008] Optionally, the outer wall of the tank body is provided with a thermometer for measuring the internal water temperature.

[0009] Optionally, a sealing ring is arranged at the rotation position of the linkage rod and the sealing partition plate.

[0010] In summary, the present application has at least one of the following beneficial technical effects:

[0011] The utility model discloses a linkage assembly is arranged in the tank body, when flue gas enters the tank body from the inlet pipe, the airflow of rising drives the fan blade to rotate, and then makes the linkage rod rotate, drives the sleeve plate and the stirring blade to stir the water in the tank body, can always keep the average water temperature lower, thereby maintaining the larger temperature difference between water and flue gas, effectively improve the heat transfer rate, greatly improve the heat exchange efficiency of the whole waste heat recovery device, can more fully recover the waste heat in flue gas.

[0012] Further, the heat exchange pipe is spirally arranged, the spiral heat exchange pipe forms a more compact heat exchange path, further enhances the heat exchange effect, significantly improves the waste heat recovery efficiency, and ensures that the waste heat in flue gas can be more efficiently utilized. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The structure schematic diagram of flue gas desulfurization waste heat recovery device is given;

[0014] Figure 2 For Figure 1 The internal cross-sectional structure schematic diagram is given;

[0015] Figure 3 For Figure 2 The split structure schematic diagram of linkage assembly in it is given.

[0016] REFERENCE SIGNS:

[0017] 1, tank body;2, inlet pipe;3, sealing partition plate;

[0018] 4, linkage assembly; 41, linkage rod; 42, fan blade; 43, cover plate; 44, stirring blade;

[0019] 5, water inlet pipe; 6, water outlet pipe; 7, heat exchange pipe; 8, filter; 9, thermometer; 10, sealing ring. DETAILED DESCRIPTION

[0020] The technical solutions of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0021] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0022] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0023] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0025] EMBODIMENT

[0026] As Figure 1 and Figure 2As shown, the flue gas desulfurization waste heat recovery device provided by the utility model, including: the jar body 1 for storing water, and the jar body 1 is the heat preservation jar body, can prevent temperature loss, the outer wall of jar body 1 is connected with the air inlet pipe 2, is convenient for the flue gas to enter the inside of jar body 1;The sealing baffle 3 fixedly arranged in the inner wall of jar body 1 can seal and divide jar body 1 into two chambers, the sealing baffle 3 is rotatably provided with the linkage assembly 4 for stirring water;The water inlet pipe 5 and water outlet pipe 6 are connected to the outer wall of jar body 1, and the water inlet pipe 5 is located directly above the water outlet pipe 6, which is convenient for adding or discharging water;The heat exchange pipe 7 is arranged in the inside of jar body 1, the upper end of heat exchange pipe 7 penetrates the sealing baffle 3, the lower end of heat exchange pipe 7 penetrates jar body 1 and extends to the outside, which is convenient for the flue gas to enter the inside of heat exchange pipe 7.

[0027] As Figure 2 and Figure 3 shown, the linkage assembly 4 includes a linkage rod 41 rotatably sleeved on the sealing baffle 3, the lower end of the linkage rod 41 is rotatably connected to the inner bottom surface of the jar body 1, which can ensure stable rotation of the linkage rod 41, a fan blade 42 is fixedly sleeved on the upper end of the linkage rod 41, the fan blade 42 is rotated by the flue gas, thereby driving the linkage rod 41 to rotate, the fan blade 42 is located directly above the sealing baffle 3, a sleeve plate 43 is fixedly sleeved on the lower end of the linkage rod 41, a plurality of stirring blades 44 are fixedly arranged on the upper surface of the sleeve plate 43, the stirring blades 44 are located directly below the sealing baffle 3, which is convenient for driving the stirring blades 44 on the sleeve plate 43 to stir the water stored in the jar body 1, so that the heat exchange is more uniform.

[0028] Further, the heat exchange pipe 7 is spirally arranged, the heat exchange pipe 7 is sleeved with the linkage assembly 4, which can increase the uniformity of contact with the water stored in the jar body 1, and improve the efficiency of heat exchange.

[0029] Secondly, the outer wall of the jar body 1 is fixedly provided with a filter 8 for filtering flue gas, the filter 8 is communicated with the lower end of the heat exchange pipe 7, and the filter 8 is of R75N-A10 type, which can filter the discharged flue gas.

[0030] Further, the outer wall of the jar body 1 is provided with a thermometer 9 for measuring the internal water temperature, which can measure the internal water temperature of the jar body 1.

[0031] In addition, a sealing ring 10 is arranged at the rotating position of the linkage rod 41 and the sealing baffle 3, which can prevent the water in the jar body 1 from leaking to the upper side of the sealing baffle 3, and ensure the sealing property.

[0032] The working principle of the embodiment is as follows: the flue gas containing waste heat enters the jar body 1 from the air inlet pipe 2, since the air inlet pipe 2 is located above the sealing baffle 3, the flue gas will directly impact the fan blade 42, driving the linkage rod 41 to rotate.

[0033] When the linkage rod 41 rotates, the sleeve plate 43 and the stirring blade 44 at the lower end rotate with it, and the water below the sealing baffle 3 is stirred to make the water flow. The flue gas enters the inside of the heat exchange pipe 7 through the upper end of the heat exchange pipe 7, the heat exchange pipe 7 is spirally arranged around the linkage rod 41 and is in contact with the water. The flue gas flows in the heat exchange pipe 7, and the heat is transferred to the surrounding water through the heat exchange pipe 7 to increase the temperature of the water. Since the water is stirred, the temperature distribution is more uniform, and the problem that the temperature of the water close to the heat exchange pipe 7 is too high to reduce the temperature difference with the flue gas is avoided, thereby improving the heat transfer rate and the heat exchange efficiency.

[0034] The flue gas after heat exchange flows out from the lower end of the heat exchange pipe 7, enters the filter 8, and the filter 8 filters out the dust and impurities in the flue gas, and then the purified flue gas is discharged. The water that absorbs heat and increases in temperature flows out through the water outlet pipe 6 and is used for other links that need heat. At the same time, the low-temperature water enters the tank body 1 from the water inlet pipe 5 to supplement the discharged hot water, and forms a water circulation to continuously perform the waste heat recovery work. The thermometer 9 monitors the temperature of the water in the tank body 1 in real time, so that the operating parameters of the device can be adjusted by the staff according to the temperature change.

[0035] The above specific embodiments are only optional embodiments of the present application, and based on the technical scheme of the present application and the related inspiration of the above embodiments, those skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A waste heat recovery device for flue gas desulfurization, characterized in that, include: A tank (1) for storing water, wherein an air inlet pipe (2) is provided on the outer wall of the tank (1); A sealing partition (3) is fixedly installed on the inner wall of the tank (1), and a linkage assembly (4) for stirring water is rotatably installed on the sealing partition (3); The inlet pipe (5) and outlet pipe (6) are connected to the outer wall of the tank (1), and the inlet pipe (5) is located directly above the outlet pipe (6); The heat exchange tube (7) is installed inside the tank (1). The upper end of the heat exchange tube (7) passes through the sealing partition (3), and the lower end of the heat exchange tube (7) passes through the tank (1) and extends to the outside.

2. The flue gas desulfurization waste heat recovery device according to claim 1, characterized in that, The linkage assembly (4) includes a linkage rod (41) rotatably sleeved on the sealing partition (3). The lower end of the linkage rod (41) is rotatably connected to the inner bottom surface of the tank (1). A fan blade (42) is fixedly sleeved on the upper end of the linkage rod (41). The fan blade (42) is located directly above the sealing partition (3). A sleeve plate (43) is fixedly sleeved on the lower end of the linkage rod (41). A plurality of stirring blades (44) are fixedly arranged on the upper surface of the sleeve plate (43). The stirring blades (44) are located directly below the sealing partition (3).

3. The waste heat recovery device for flue gas desulfurization according to claim 1, characterized in that, The heat exchange tube (7) is spirally arranged and is sleeved with the linkage assembly (4).

4. The waste heat recovery device for flue gas desulfurization according to claim 1, characterized in that, The outer wall of the tank (1) is fixedly provided with a filter (8) for filtering flue gas, and the filter (8) is connected to the lower end of the heat exchange tube (7).

5. The waste heat recovery device for flue gas desulfurization according to claim 1, characterized in that, The outer wall of the tank (1) is equipped with a thermometer (9) for measuring the internal water temperature.

6. The waste heat recovery device for flue gas desulfurization according to claim 2, characterized in that, A sealing ring (10) is provided at the point where the connecting rod (41) rotates with the sealing partition (3).

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