A plate heat exchange structure for dye liquor heating

Abstract

The utility model discloses a plate heat exchange structure for dye liquor heating relates to printing and dyeing technical field. Include: first layer heat exchange board, second layer heat exchange board and dye liquor flow heat exchange board, first layer heat exchange board inside sets up plate -shaped inner chamber to install second layer heat exchange board, and the dye liquor flow heat exchange board inside has the dye liquor flow inner chamber of containing dye liquor flow, and the space of containing dye liquor flow heat exchange board is left between second layer heat exchange board and plate -shaped inner chamber and this space is filled with heat transfer liquid, the plate -shaped inner chamber outer wall of first layer heat exchange board sets up flue gas channel interlayer, and the inside of second layer heat exchange board sets up flue gas channel inner chamber. The utility model discloses first layer heat exchange board and second layer heat exchange board between form inside and outside double -deck flue gas flow passage, to realize double -faced simultaneous heat exchange to dye liquor flow heat exchange board, have greater heat exchange surface, improve the heat exchange surface area between dye liquor and high temperature flue gas, to improve the heat utilization efficiency of high temperature flue gas and the heat exchange efficiency to dye liquor.

Description

Technical Field

[0001] This utility model relates to the field of printing and dyeing technology, and in particular to a plate heat exchange structure for heating dye liquor. Background Technology

[0002] As a traditional high-energy-consuming industry, the dyeing and printing industry faces enormous pressure to reduce carbon emissions. Most regions are promoting the use of clean energy, thus creating a significant need for upgrading and retrofitting production enterprises that rely on coal-fired boilers. Currently, to reduce energy loss and environmental pollution, gas-fired heating is being used to heat the dye liquor in the dyeing vats.

[0003] In existing technologies, high-temperature flue gas is generated by gas heating and then exchanged with the dye liquor to achieve the heating treatment of the dye liquor. However, considering further energy-saving treatment of the dye liquor heating, it is necessary to further improve the heat exchange efficiency of the dye liquor, thereby improving the thermal utilization efficiency of gas heating. Current technologies suffer from insufficient heat exchange surface area for both the dye liquor and the high-temperature flue gas, resulting in low thermal utilization efficiency for the high-temperature flue gas and insufficient heat exchange efficiency for the dye liquor. This directly affects the efficiency of dyeing and printing processes and meets the requirements of environmentally friendly production.

[0004] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a plate heat exchange structure for heating dye liquor. Utility Model Content

[0005] The purpose of this invention is to provide a plate heat exchange structure for heating dye liquor, which can improve the heating efficiency of dye liquor and increase the heat utilization rate by increasing the heat exchange surface area between dye liquor and high-temperature flue gas.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a plate heat exchange structure for heating dye liquor, comprising:

[0008] First heat exchange plate, second heat exchange plate and dye liquor flow heat exchange plate;

[0009] The first heat exchange plate has a plate-shaped inner cavity for installing the second heat exchange plate. The dye liquid flow heat exchange plate has a dye liquid flow inner cavity to accommodate the flow of dye liquid. There is a space between the second heat exchange plate and the plate-shaped inner cavity to accommodate the dye liquid flow heat exchange plate and this space is filled with heat transfer fluid.

[0010] The outer wall of the plate-shaped inner cavity of the first heat exchange plate is provided with a flue gas duct interlayer, the interior of the second heat exchange plate is provided with a flue gas duct inner cavity, and the interior of the flue gas duct inner cavity of the second heat exchange plate is provided with a high-temperature flue gas channel.

[0011] A flue gas guiding channel structure is provided between the flue gas duct interlayer of the first heat exchange plate and the high-temperature flue gas duct of the second heat exchange plate to guide the high-temperature flue gas from the high-temperature flue gas duct into the flue gas duct interlayer.

[0012] Furthermore, the dye liquor flow heat exchange plate is provided with an inlet and an outlet at both ends to allow the dye liquor to flow in and out of the dye liquor flow heat exchange plate.

[0013] Furthermore, the dye liquor flow heat exchange plate is provided with multiple partition plates, which are staggered and distributed in the dye liquor flow heat exchange plate to form channels that guide the flow of dye liquor.

[0014] The inlet and outlet are located at opposite ends of the dye liquor flow channel.

[0015] Furthermore, the space containing the dye liquid flow heat exchange plate and the heat transfer liquid is a closed space.

[0016] Furthermore, one end of the high-temperature flue gas channel extends beyond the first heat exchange plate and the second heat exchange plate;

[0017] A burner is installed at one end of the high-temperature flue gas channel outside the first and second heat exchange plates.

[0018] Furthermore, a flue gas inlet is provided on the side of the high-temperature flue gas channel, which is connected to the inner cavity of the flue gas channel, and a flue gas outlet is provided on the first heat exchange plate, which is connected to the interlayer of the flue gas channel.

[0019] Furthermore, the flue gas guiding channel structure includes a flue gas inlet that connects the flue gas duct interlayer with the inner cavity of the flue gas duct, and a plurality of parallel flue gas guiding plates disposed inside the inner cavity of the flue gas duct. The plurality of flue gas guiding plates are evenly distributed along the extension direction of the flue gas inlet, and the two ends of the flue gas guiding plates extend into the inside of the flue gas inlet and the inside of the flue gas inlet, respectively.

[0020] This utility model has the following beneficial effects.

[0021] The first and second heat exchange plates of this invention form an inner and outer double-layer flue gas flow channel, so as to achieve simultaneous heat exchange on both sides of the dye liquor flow heat exchange plate. It has a large heat exchange surface, increases the heat exchange surface area between the dye liquor and the high-temperature flue gas, and improves the heat utilization efficiency of the high-temperature flue gas and the heat exchange efficiency of the dye liquor. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 A schematic diagram of a plate heat exchange structure for heating dye liquor provided in an embodiment of this utility model;

[0024] Figure 2 A cross-sectional view of the first and second heat exchange plates of a plate heat exchange structure for heating dye liquor provided in an embodiment of this utility model.

[0025] Figure 3 This is a schematic diagram of a plate heat exchanger for dye liquor heating provided in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. First heat exchange plate; 2. Second heat exchange plate; 3. Dye liquor flow heat exchange plate; 4. Plate-shaped inner cavity; 5. Dye liquor flow inner cavity; 6. Flue gas duct interlayer; 7. Flue gas duct inner cavity; 8. High-temperature flue gas passage; 9. Liquid inlet; 10. Liquid outlet; 11. Partition plate; 12. Burner; 13. Smoke inlet; 14. Smoke outlet; 15. Flue gas outlet; 16. Flue gas guide plate. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, a further detailed description of this utility model will be provided below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] See Figures 1 to 3 As shown;

[0030] This embodiment discloses a plate heat exchange structure for heating dye liquor, including:

[0031] First heat exchange plate 1, second heat exchange plate 2 and dye liquor flow heat exchange plate 3;

[0032] The first heat exchange plate 1 has a plate-shaped inner cavity 4 for installing the second heat exchange plate 2. The second heat exchange plate 2 is fixedly connected to one side of the plate-shaped inner cavity 4 to suspend and support the second heat exchange plate 2, so that the other sides of the second heat exchange plate 2 do not contact the plate-shaped inner cavity 4. The dye liquor flow heat exchange plate 3 has a dye liquor flow inner cavity 5 to accommodate the flow of dye liquor, so that the dye liquor can exchange heat during the flow of dye liquor in the dye liquor flow inner cavity 5. There is a space between the second heat exchange plate 2 and the plate-shaped inner cavity 4 to accommodate the dye liquor flow heat exchange plate 3, and this space is filled with heat transfer fluid. That is, the space between the first heat exchange plate 1 and the second heat exchange plate 2 is filled with heat transfer fluid for heat transfer. The dye liquor flow heat exchange plate 3 is fixedly connected to this space by local support to form a suspension, so that there is a space between the dye liquor flow heat exchange plate 3 and this space to fill with heat transfer fluid, so as to improve the heat exchange efficiency by using heat transfer fluid as a heat transfer medium.

[0033] The outer wall of the plate-shaped inner cavity 4 of the first heat exchange plate 1 is provided with a flue gas duct interlayer 6, the inner wall of the second heat exchange plate 2 is provided with a flue gas duct inner cavity 7, and the inner wall of the flue gas duct inner cavity 7 in the second heat exchange plate 2 is provided with a high temperature flue gas channel 8.

[0034] A flue gas guiding channel structure is provided between the flue gas duct interlayer 6 of the first heat exchange plate 1 and the high-temperature flue gas channel 8 of the second heat exchange plate 2 to guide the high-temperature flue gas from the high-temperature flue gas channel 8 into the flue gas duct interlayer 6.

[0035] Specifically, high-temperature flue gas enters through high-temperature flue gas channel 8 and is guided into the flue gas duct cavity 7 of the second heat exchange plate 2. The high-temperature flue gas then passes through the flue gas guiding channel structure, which firstly distributes it evenly within the flue gas duct cavity 7, allowing the high temperature to be conducted outward to the heat transfer liquid, and secondly diffuses it evenly into the flue gas duct interlayer 6 of the first heat exchange plate 1, allowing the high temperature to be conducted inward to the heat transfer liquid. This forms a structure in which heat exchange occurs simultaneously on both sides of the planar plate structure of the dye liquor flow heat exchange plate 3. During this process, the dye liquor flowing within the dye liquor flow heat exchange plate 3 achieves uniform and efficient heat exchange, thereby achieving uniform and efficient heating of the dye liquor. At the same time, the first heat exchange plate 1 and the second heat exchange plate 2 form a double-layer high-temperature flue gas utilization layer, effectively improving the heat utilization rate of the high-temperature flue gas and achieving energy-saving and environmental protection effects.

[0036] Furthermore, the dye liquor flow heat exchange plate 3 is provided with an inlet 9 and an outlet 10 at both ends to allow the dye liquor to flow in and out of the dye liquor flow heat exchange plate 3. That is, the unheated dye liquor enters the dye liquor flow heat exchange plate 3 from the inlet 9, and heat exchange is achieved during the flow inside the dye liquor flow heat exchange plate 3. Finally, the heated dye liquor is discharged from the outlet 10.

[0037] Furthermore, multiple partition plates 11 are provided inside the dye liquor flow heat exchange plate 3, and the multiple partition plates 11 are staggered in the dye liquor flow heat exchange plate 3 to form channels to guide the flow of dye liquor.

[0038] The inlet 9 and outlet 10 are located at the two ends of the dye liquor flow channel, which allows the dye liquor flow heat exchange plate 3 to flow uniformly in the meandering channel formed by multiple partition plates 11 in the dye liquor flow inner cavity 5. During the movement, the entire surface of the dye liquor flow heat exchange plate 3 exchanges heat with the dye liquor. Therefore, based on the heat exchange structure with a small heat exchange contact area in the prior art, it has a higher heat exchange efficiency. Thus, the flow rate can be increased, the flow speed of the dye liquor can be increased, and the heating speed of the dye liquor can be improved.

[0039] Furthermore, the space containing the dye liquor flow heat exchange plate 3 and the heat transfer liquid is a closed space to seal and contain the heat transfer liquid. The space containing the heat transfer liquid can be provided with an inlet and an outlet at both ends to facilitate the replacement of the heat transfer liquid and the control of the pressure change inside the space under temperature changes. Pressure control is common knowledge known to those skilled in the art and will not be described in detail here.

[0040] Furthermore, one end of the high-temperature flue gas passage 8 extends out from the first heat exchange plate 1 and the second heat exchange plate 2;

[0041] A burner 12 is installed at one end of the high-temperature flue gas channel 8 outside the first heat exchange plate 1 and the second heat exchange plate 2. The burner 12 can be a gas burner to generate high-temperature flue gas and provide a heat source for the device.

[0042] Furthermore, a flue gas inlet 13 is provided on the side of the high-temperature flue gas channel 8, which is connected to the flue gas duct cavity 7, so that the high-temperature flue gas generated in the high-temperature flue gas channel 8 can enter the flue gas duct cavity 7 through the flue gas inlet 13. The flue gas inlet 13 can be arranged along the axial extension direction of the high-temperature flue gas channel 8 so that the flue gas can enter the flue gas duct cavity 7 evenly and quickly. A flue gas outlet 14 is provided on the first heat exchange plate 1, which is connected to the flue gas duct interlayer 6. When the burner 12 continuously generates high-temperature flue gas, the low-temperature flue gas that enters the flue gas duct interlayer 6 from the flue gas duct cavity 7 and exchanges heat is finally discharged through the flue gas outlet 14.

[0043] Furthermore, the flue gas guiding channel structure includes a flue gas inlet 15 connecting the flue gas duct interlayer 6 to the flue gas duct inner cavity 7, and multiple parallel flue gas guiding plates 16 disposed inside the flue gas duct inner cavity 7. The multiple flue gas guiding plates 16 are evenly distributed along the extension direction of the flue gas inlet 13, with both ends of the flue gas guiding plates 16 extending into the inside of the flue gas inlet 13 and the inside of the flue gas inlet 15, respectively. Thus, the high-temperature flue gas generated in the high-temperature flue gas channel 8 is dispersed and circulated at the flue gas inlet 13 along the mutually isolated channel formed by the multiple flue gas guiding plates 16. During the circulation process, the flue gas can be more quickly and evenly distributed inside the flue gas duct inner cavity 7. At the same time, the dispersed flue gas also enters the flue gas duct interlayer 6 evenly from the flue gas inlet 15, so as to achieve uniform entry of flue gas into the flue gas duct interlayer 6, thereby making the high temperature distribution of the first heat exchange plate 1 and the second heat exchange plate 2 uniform, and heating the dye liquor uniformly, ensuring the heating quality of the dye liquor.

[0044] In the above technical solution, the plate heat exchange structure for heating dye liquor provided by this utility model has the following beneficial effects:

[0045] The first and second heat exchange plates of this invention form an inner and outer double-layer flue gas flow channel, so as to achieve simultaneous heat exchange on both sides of the dye liquor flow heat exchange plate. It has a large heat exchange surface, increases the heat exchange surface area between the dye liquor and the high-temperature flue gas, and improves the heat utilization efficiency of the high-temperature flue gas and the heat exchange efficiency of the dye liquor.

[0046] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A plate heat exchange structure for heating dye liquor, characterized in that, include: The first heat exchange plate (1), the second heat exchange plate (2), and the dye flow heat exchange plate (3); The first heat exchange plate (1) has a plate-shaped inner cavity (4) for installing the second heat exchange plate (2). The dye liquid flow heat exchange plate (3) has a dye liquid flow inner cavity (5) to accommodate the flow of dye liquid. There is a space between the second heat exchange plate (2) and the plate-shaped inner cavity (4) to accommodate the dye liquid flow heat exchange plate (3) and this space is filled with heat transfer liquid. A flue gas duct interlayer (6) is provided on the outer wall of the plate-shaped inner cavity (4) of the first heat exchange plate (1), and a flue gas duct inner cavity (7) is provided inside the second heat exchange plate (2). A high-temperature flue gas channel (8) is provided inside the flue gas duct inner cavity (7) in the second heat exchange plate (2). A flue gas guiding channel structure is provided between the flue gas duct interlayer (6) of the first heat exchange plate (1) and the high temperature flue gas channel (8) of the second heat exchange plate (2) to guide the high temperature flue gas of the high temperature flue gas channel (8) into the flue gas duct interlayer (6).

2. The plate heat exchange structure for heating dye liquor according to claim 1, characterized in that, The dye liquid flow heat exchange plate (3) is provided with an inlet (9) and an outlet (10) at both ends to allow the dye liquid to enter and exit the dye liquid flow heat exchange plate (3) to achieve flow.

3. A plate heat exchange structure for heating dye liquor according to claim 2, characterized in that, Multiple partition plates (11) are provided inside the dye liquor flow heat exchange plate (3). The multiple partition plates (11) are staggered and distributed in the dye liquor flow heat exchange plate (3) to form a channel to guide the flow of dye liquor. The inlet (9) and outlet (10) are located at the two ends of the dye flow channel, respectively.

4. A plate heat exchange structure for heating dye liquor according to claim 1, characterized in that, The space that contains the dye liquid flow heat exchange plate (3) and the heat transfer liquid is a closed space.

5. A plate heat exchange structure for heating dye liquor according to claim 1, characterized in that, One end of the high-temperature flue gas channel (8) extends out from the first heat exchange plate (1) and the second heat exchange plate (2). A burner (12) is provided at one end of the high-temperature flue gas channel (8) outside the first heat exchange plate (1) and the second heat exchange plate (2).

6. A plate heat exchange structure for heating dye liquor according to claim 1, characterized in that, The high-temperature flue gas passage (8) has a flue gas inlet (13) connected to the flue gas passage cavity (7) on its side, and a flue gas outlet (14) connected to the flue gas passage interlayer (6) is provided on the first heat exchange plate (1).

7. A plate heat exchange structure for heating dye liquor according to claim 6, characterized in that, The flue gas guiding channel structure includes a flue gas inlet (15) that connects the flue gas duct interlayer (6) with the flue gas duct cavity (7) and a plurality of parallel flue gas guide plates (16) disposed inside the flue gas duct cavity (7). The plurality of flue gas guide plates (16) are evenly distributed along the extension direction of the flue gas inlet (13), and the two ends of the flue gas guide plates (16) extend into the inside of the flue gas inlet (13) and the inside of the flue gas inlet (15), respectively.

Images