Waste heat recovery heat exchanger for incineration tail gas treatment

Abstract

The utility model relates to the technical field of heat exchanger equipment, and discloses a waste heat recovery heat exchanger for incineration tail gas treatment, which comprises a base, a heat exchange box is arranged above the base, a suction hood is arranged at the top of the heat exchange box, and an induced draft fan is arranged on the right side of the suction hood; a first filter plate, a second filter plate and a heat exchange assembly are sequentially arranged in the heat exchange box from top to bottom, the heat exchange assembly comprises a water inlet pipe and a water outlet pipe, a plurality of annular pipes are connected between the water inlet pipe and the water outlet, one end of the water inlet pipe is connected with the water inlet, one end of the water outlet pipe is connected with the water outlet, and heat absorption plates are arranged among the annular pipes. The bottom of the heat exchange box is connected with an air blower. By adjusting the position of the suction hood, tail gas collection is facilitated; the tail gas is filtered and dedusted, so that dust is prevented from accumulating in an internal pipeline and blocking the pipeline; the heat absorbing plate absorbs heat of the tail gas and makes contact with the annular pipe, the heat transfer efficiency is higher, and heat exchange is more thorough.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger equipment, in particular to a waste heat recovery heat exchanger for incineration tail gas treatment. Background Art

[0002] The exhaust gas from incineration contains waste heat. In order to effectively utilize the heat energy and reduce heat loss during the transfer process, a waste heat recovery heat exchanger is needed to collect the heat. The heat exchanger is a device that transfers part of the heat of the hot fluid to the cold fluid.

[0003] Existing application publication number CN110966884A discloses a low-temperature waste heat recovery heat exchanger. The heat exchanger comprises a main body, comprising an upper cylinder, a heat exchange section, and a lower cylinder. The heat exchange section is constructed from at least two sets of heat exchange plate assemblies spliced ​​together from top to bottom. The heat exchange plate assemblies include tube sheets at both ends and a number of metal plates arranged sequentially between the tube sheets. This low-temperature waste heat recovery heat exchanger achieves significant heat exchange efficiency by optimizing the heat exchange plate assembly structure and alternately filling the adjacent metal plates with horizontal and vertical polymer materials as separators. The hot air recovered from heat exchange in this device is used for pre-drying nano-calcium carbonate, saving over 20% of energy and achieving significant economic benefits.

[0004] However, this solution still has some shortcomings. The gas contains dust, and the dust is only removed by flushing with condensed water on the metal surface, which has a poor effect. After the gas continues to pass through, the metal plate is continuously heated and the condensation effect is not obvious. At the same time, the hot air from the metal plate is not fully utilized, resulting in unnecessary heat loss.

[0005] Therefore, it is necessary to provide a waste heat recovery heat exchanger for incineration tail gas treatment to solve the above technical problems. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a waste heat recovery heat exchanger for incineration tail gas treatment.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a waste heat recovery heat exchanger for incineration tail gas treatment, comprising a base, a heat exchange box is provided above the base, an air suction hood is provided on the top of the heat exchange box, an induced draft fan is provided on the right side of the air suction hood, the air suction hood and the input end of the induced draft fan are connected through an air pipe, and the output end of the induced draft fan is connected to the top of the heat exchange box; the interior of the heat exchange box is provided with a first filter plate, a second filter plate and a heat exchange component from top to bottom, the heat exchange component includes a water inlet pipe and a water outlet pipe, a plurality of annular pipes are connected between the water inlet pipe and the water outlet, the inlet pipe and the water outlet are connected. One end of the water pipe extends out of the heat exchange box and is connected to the water inlet, one end of the water outlet pipe extends out of the heat exchange box and is connected to the water outlet, a heat absorbing plate is provided between the multiple annular tubes, and the bottom of the heat exchange box is connected to a blower; a lifting assembly is provided between the base and the heat exchange box, and the lifting assembly includes slide grooves provided on both sides of the heat exchange box, and slide rails are slidably provided on the slide grooves, and the bottom of the slide rails is fixedly connected to the base; a nut seat is provided on the back of the heat exchange box, and a screw rod is connected to the inner thread of the nut seat, and the screw rod is rotatably connected to the base, the bottom of the screw rod is connected to a rocker, and the bottom of the base is connected to a pulley.

[0008] Preferably, the water inlet pipe is located below the water outlet pipe, and the water inlet and water outlet are located on different sides of the heat exchange box.

[0009] Preferably, the heat exchange box is rotatably provided with a box door, and the first filter plate and the second filter plate are both detachably connected to the inner wall of the heat exchange box.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. In this utility model, the entire device is moved by a pulley, and the screw rod is driven to rotate by a rocker to control the rise and fall of the heat exchange box. The height of the air hood can be adjusted, and the horizontal position of the air hood can be adjusted through the air pipe to facilitate the collection of exhaust gas.

[0012] 2. In the present invention, the first filter plate and the second filter plate are used to filter and remove dust from the exhaust gas to avoid dust accumulation in the internal pipes and blockage of the pipes; a heat absorbing plate is provided between the multiple annular pipes. The heat absorbing plate is made of metal and can better absorb the heat of the exhaust gas. Then, through contact with the annular pipes, the heat transfer efficiency is higher; the water channel circulates from bottom to top, and the inlet and outlet are separated, which can make the heat exchange more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2This is a cross-sectional view of the internal structure of the heat exchange box of the present invention.

[0015] In the figure: 1-base; 2-heat exchange box; 3-air hood; 4-induced draft fan; 5-air duct; 6-first filter plate; 7-second filter plate; 8-water inlet; 9-water outlet; 10-water inlet pipe; 11-water outlet pipe; 12-annular pipe; 13-heat absorbing plate; 14-blower; 15-box door; 16-slide rail; 17-slide groove; 18-nut seat; 19-screw; 20-rocker; 21-pulley. DETAILED DESCRIPTION

[0016] The present invention is described below in conjunction with the accompanying drawings and specific embodiments of the present invention. The description herein is intended only to explain the present invention and is not intended to limit the present invention. Based on the embodiments of the present invention, any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art without creative work to all other embodiments obtained based on the embodiments of the present invention shall be included within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0019] See also Figure 1-Figure 2 The utility model provides an embodiment: a waste heat recovery heat exchanger for incineration tail gas treatment, comprising a base 1, a heat exchange box 2 is provided above the base 1, an air suction hood 3 is provided on the top of the heat exchange box 2, an induced draft fan 4 is provided on the right side of the air suction hood 3, the air suction hood 3 and the input end of the induced draft fan 4 are connected through an air pipe 5, and the output end of the induced draft fan 4 is connected to the top of the heat exchange box 2;

[0020] The interior of the heat exchange box 2 is provided with a first filter plate 6, a second filter plate 7 and a heat exchange component from top to bottom. The heat exchange component includes a water inlet pipe 10 and a water outlet pipe 11. A plurality of annular tubes 12 are connected between the water inlet pipe 10 and the water outlet 9. One end of the water inlet pipe 10 extends out of the heat exchange box 2 and is connected to the water inlet 8. One end of the water outlet pipe 11 extends out of the heat exchange box 2 and is connected to the water outlet 9. A heat absorbing plate 13 is provided between the plurality of annular tubes 12. A blower 14 is connected to the bottom of the heat exchange box 2, and a pulley 21 is connected to the bottom of the base 1.

[0021] The air pipe 5 adopts a telescopic tube to facilitate the adjustment of the position of the air hood 3; the pulley 21 is used to move the entire device to facilitate the collection of exhaust gas; the first filter plate 6 and the second filter plate 7 are used to filter and remove dust from the exhaust gas to avoid dust accumulation in the internal pipeline and blockage of the pipeline; the water to be heated is continuously passed through the water inlet 8, and after heat exchange between the gas and the annular tube 12, it is discharged from the water outlet 9; in order to facilitate better heat transfer, a heat absorbing plate 13 is provided between the multiple annular tubes 12. The heat absorbing plate 13 is made of metal and can better absorb the heat of the exhaust gas, and then transfer heat through contact with the annular tube 12; the exhaust gas is finally discharged to the outside of the box through the blower 14.

[0022] Furthermore, a lifting assembly is provided between the base 1 and the heat exchange box 2, and the lifting assembly includes a slide groove 17 arranged on both sides of the heat exchange box 2, and a slide rail 16 is slidably provided on the slide groove 17. The bottom of the slide rail 16 is fixedly connected to the base 1, and a nut seat 18 is provided on the back of the heat exchange box 2. The nut seat 18 is internally threaded with a screw rod 19, and the screw rod 19 is rotatably connected to the base 1. The bottom of the screw rod 19 is connected to a rocker arm 20.

[0023] The screw rod 19 is driven to rotate by the rocker 20 to control the lifting and lowering of the heat exchange box 2, which can be used to adjust the height of the air hood 3 to facilitate the collection of exhaust gas.

[0024] Furthermore, the water inlet pipe 10 is located below the water outlet pipe 11, and the water inlet 8 and the water outlet 9 are located on different sides of the heat exchange box 2. The water circuit circulates from bottom to top, and the inlet and outlet are separated, which can make the heat exchange more thorough and more efficient.

[0025] Furthermore, a door 15 is rotatably provided on the heat exchange box 2, and the first filter plate 6 and the second filter plate 7 are detachably connected to the inner wall of the heat exchange box 2. By opening the door 15, the first filter plate 6 and the second filter plate 7 can be easily cleaned later.

[0026] Working principle of the utility model: When the utility model is in use, the entire device is moved to the working area through the pulley 21, the horizontal position of the air intake hood 3 is adjusted through the air pipe 5, and the rocker 20 is rotated to drive the screw rod 19 to rotate, thereby controlling the lifting and lowering of the heat exchange box 2, which can be used to adjust the height of the air intake hood 3 to facilitate the collection of exhaust gas. The induced draft fan 4 and the blower 14 are started, and the exhaust gas is brought into the heat exchange box 2. The first filter plate 6 and the second filter plate 7 are used to filter and remove dust from the exhaust gas. The water to be heated is continuously passed through the water inlet 8. After the water exchanges heat with the gas and the annular tube 12, it is discharged from the water outlet 9, and the exhaust gas is finally discharged to the outside of the box through the blower 14.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A waste heat recovery heat exchanger for treating incineration tail gas, comprising a base (1), characterized in that: A heat exchange box (2) is provided above the base (1), an air intake hood (3) is provided on the top of the heat exchange box (2), an induced draft fan (4) is provided on the right side of the air intake hood (3), the air intake hood (3) and the input end of the induced draft fan (4) are connected via an air pipe (5), and the output end of the induced draft fan (4) is connected to the top of the heat exchange box (2); The interior of the heat exchange box (2) is provided with a first filter plate (6), a second filter plate (7) and a heat exchange component in sequence from top to bottom. The heat exchange component includes a water inlet pipe (10) and a water outlet pipe (11). A plurality of annular pipes (12) are connected between the water inlet pipe (10) and the water outlet (9). One end of the water inlet pipe (10) extends out of the heat exchange box (2) and is connected to the water inlet (8). One end of the water outlet pipe (11) extends out of the heat exchange box (2) and is connected to the water outlet (9). A heat absorbing plate (13) is provided between the plurality of annular pipes (12). A blower (14) is connected to the bottom of the heat exchange box (2). A lifting assembly is provided between the base (1) and the heat exchange box (2), and the lifting assembly includes a slide groove (17) provided on both sides of the heat exchange box (2), a slide rail (16) is slidably provided on the slide groove (17), and the bottom of the slide rail (16) is fixedly connected to the base (1); a nut seat (18) is provided on the back of the heat exchange box (2), and a screw rod (19) is connected to the inner thread of the nut seat (18), and the screw rod (19) is rotatably connected to the base (1), the bottom of the screw rod (19) is connected to a rocker (20), and the bottom of the base (1) is connected to a pulley (21).

2. The waste heat recovery heat exchanger for treating incineration tail gas according to claim 1, characterized in that: The water inlet pipe (10) is located below the water outlet pipe (11), and the water inlet (8) and the water outlet (9) are respectively located on different sides of the heat exchange box (2).

3. The waste heat recovery heat exchanger for treating incineration tail gas according to claim 1, characterized in that: The heat exchange box (2) is rotatably provided with a box door (15), and the first filter plate (6) and the second filter plate (7) are both detachably connected to the inner wall of the heat exchange box (2).

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