Multifunctional heat exchanger
By setting a partition plate in the condenser, the condensing section and the separation section are integrated into one device, which solves the contradiction between the flow rate requirements of the condensing section and the separation section, realizes efficient gas condensation and condensate separation, reduces equipment redundancy and operating costs, and improves economic benefits.
Patent Information
- Application Number
- CN202422417447.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-08
AI Technical Summary
In traditional condensation separation processes, the flow rate requirements of the condensation section and the separation section are contradictory, resulting in equipment redundancy and poor economy, and failure to meet environmental protection requirements.
A multifunctional heat exchanger is designed. By setting a partition plate in the shell side, the condensation section and the separation section are combined into one device to achieve high-flow rate heat exchange and low-flow rate separation. The partition plate is used to promote the collection and separation of condensate.
It realizes the intensification of gas condensation and condensate separation, reduces equipment investment, improves economic benefits and meets environmental protection requirements.
Smart Images
Figure CN223319605U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical equipment, in particular to a multifunctional heat exchanger. Background Art
[0002] Condensers are essential equipment in chemical process plants and are key to ensuring continuous and efficient process flow. During operation, condensers cleverly utilize circulating water as a cooling medium, effectively reducing the temperature of high-temperature process gases to a manageable range through a heat exchange mechanism, causing them to condense into a liquid. The resulting condensate typically consists of an aqueous phase and an organic phase rich in high-value organic media. Given the economic importance of the organic phase, efficient recovery and reuse are often required.
[0003] In traditional condensation separation processes, to achieve the separation of gas, water, and oil phases, condensation equipment generally uses a shell-and-tube heat exchanger, using circulating water or other heat transfer media as the tube-side medium. The process gas is fed into the shell-side for condensation. During the specific process, the material to be condensed flowing through the tube or shell side requires a high flow rate to form a turbulent state and achieve a good heat exchange effect. Separation equipment, on the other hand, generally uses a horizontal container. The material to be separated must flow smoothly through a longer flow channel at a lower flow rate to achieve natural separation by utilizing the density difference of the medium. The different requirements of the condensation and separation processes require at least two independent devices to be connected in series to achieve the condensation and separation processes respectively. In addition, in the actual process, different materials are transported between the two devices by pressure differential, and the pressure balance of the entire system must also be considered. When traditional condensers are used to condense exhaust gas, the relatively small proportion of recyclable medium in the gas makes the above process solution uneconomical. However, if the exhaust gas is directly discharged without recycling, it will not meet environmental requirements and will also cause a certain amount of waste. Utility Model Content
[0004] In response to the deficiencies in the prior art, the utility model discloses a multifunctional heat exchanger with strong universality, which solves the contradiction between the flow rate requirements of the condensation section and the separation section, and realizes the functions of condensing gas and separating different components in the condensate.
[0005] In order to achieve the above technical objectives, on the one hand, the utility model proposes a multifunctional heat exchanger, which includes a shell, on which an inlet for a material to be condensed and an outlet for a material to be condensed are provided; a partition plate is provided in the shell, and the partition plate is connected to the shell wall and one end of the inlet end of the material to be condensed or the outlet end of the material to be condensed, dividing the inner cavity of the shell into an upper condensation section and a lower separation section; a plurality of heat exchange tubes are provided in the condensation section, and the heat exchange tubes are used to input heat exchange medium; the separation section is provided with a first drain port for discharging the oil phase; the separation section is also provided with a liquid collection bag, and the liquid collection bag is provided with a second drain port for discharging the water phase.
[0006] The above technical solution sets a partition plate in the heat exchanger shell to divide the shell side into two parts. It innovatively combines the heat exchange section that requires a higher flow rate to improve heat exchange efficiency and the separation section that requires a lower flow rate to promote oil-water separation into one cavity, so that the multifunctional heat exchanger can perform condensation and separation operations simultaneously, solving the contradiction between the flow rate requirements of the condensation section and the separation section in the existing process; in addition, the partition plate collects the condensate at the inlet end of the separation section, which can promote the pressure balance between the condensation section and the separation section, and improve the continuity of the condensation and separation process.
[0007] The above technical solution enhances the degree of equipment concentration and can be applied to the condensation of exhaust gas and oil phase separation and recovery. It has strong universality, can reduce equipment investment, simplify the process flow, and improve economic benefits.
[0008] In a further example of this embodiment, the structure of the above technical solution is further explored and optimized to improve the condensation and separation effects and increase the separation efficiency. The specific structural optimization and technical effects are shown in the embodiment of the present utility model.
[0009] Compared with the existing technology, the utility model sets a partition plate in the shell side of the heat exchanger, integrates the condensation section and the separation section in the heat exchanger, and can complete the condensation of high-temperature gas and the oil-water separation of the condensate in one device, efficiently obtain a high-purity organic phase, reduce equipment investment, improve economic benefits, and has strong universality. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:
[0011] Figure 1 Showing the structure diagram of the multifunctional heat exchanger of the utility model;
[0012] Figure 2 A schematic cross-sectional view of the width direction of the partition plate of the utility model is shown;
[0013] Figure 3 A schematic diagram of the baffle of the present invention is shown.
[0014] The above drawings include the following reference numerals:
[0015] 1-shell, 2-pass partition, 31-inlet of material to be condensed, 32-outlet of material to be condensed, 4-heat exchange tube, 5-liquid collecting bag, 61-first liquid discharge port, 62-second liquid discharge port, 621-overflow weir plate, 622-anti-vortex device, 7-gas barrier device, 8-baffle, 91-inlet of heat exchange medium, 92-outlet of heat exchange medium. DETAILED DESCRIPTION
[0016] To facilitate understanding of the present invention, the present invention will be described in more detail below, with preferred embodiments thereof given. However, it should be understood that these embodiments are merely for the purpose of further explanation and should not be construed as limiting the present invention in any form, i.e., they are not intended to limit the scope of protection of the present invention.
[0017] Unless otherwise defined, the technical terms used in the following examples have the same meanings as those commonly understood by those skilled in the art to which this invention belongs. The experimental reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods described, unless otherwise specified, are all conventional methods.
[0018] In the description of this application, it should be understood that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.
[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.
[0020] In this application, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal connection between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0021] Example 1
[0022] A multifunctional heat exchanger, such as Figure 1 As shown, it includes a shell 1, on which an inlet 31 for the material to be condensed and an outlet 32 for the material to be condensed are provided; a partition plate 2 is provided in the shell 1, and the partition plate 2 is connected to the shell wall and one of the inlet end of the material to be condensed or the outlet end of the material to be condensed, dividing the inner cavity of the shell into an upper condensation section and a lower separation section; a plurality of heat exchange tubes 4 are provided in the condensation section, and the heat exchange tubes 4 are used to input heat exchange medium; the separation section is provided with a first drain port 61 for discharging the oil phase; the separation section is also provided with a liquid collecting bag 5, and the liquid collecting bag 5 is provided with a second drain port 62 for discharging the water phase.
[0023] In the specific process, in the condensation section: the material to be separated, including the gas phase, water phase and oil phase, enters the shell side of the multifunctional heat exchanger through the material to be condensed inlet 31, and is cooled by heat exchange with the heat exchange medium in the heat exchange tube 4 to obtain a condensate containing the oil phase and the water phase, and the condensed gas phase is output from the condensed material outlet; in the separation section: the condensate is collected on the partition plate 2 and input into the inlet of the separation section at the lower part of the shell side along the partition plate 2. The water phase in the condensate will be collected in the liquid collecting bag 5 under the action of gravity and output from the second drain port 62, and the oil phase in the condensate will be output from the first drain port 61, thereby realizing oil-water separation.
[0024] Optionally, the housing 1 of the multifunctional heat exchanger of this embodiment further includes tube sheets to support the tubes and increase the load-bearing capacity of the entire device. Those skilled in the art may, based on actual needs, install an appropriate number of tube sheets in appropriate locations within the multifunctional heat exchanger of this embodiment. Such technical solutions fall within the scope of protection of this utility model.
[0025] It should be noted that the positions of the inlet 31 for the material to be condensed and the outlet 32 for the material to be condensed are not fixed in the present invention. In some examples of this embodiment, for example, Figure 1 The illustrated material to be condensed inlet 31 can serve as an outlet for discharging the material after condensation and separation, while the material to be condensed outlet 32 can also serve as an inlet for inputting the material to be condensed. In actual use, the respective positions can be adjusted based on specific operating conditions. Furthermore, during the specific process, the heat exchange medium of the present invention is introduced into the housing via the heat exchange medium inlet 91, exchanges heat with the material to be condensed through the heat exchange tube 4, and is then output via the heat exchange medium outlet 92. However, in some examples of this embodiment, the positions of the heat exchange medium inlet 91 and the heat exchange medium outlet 92 are not fixed; the ports for inputting or outputting the heat exchange medium can be selected based on specific operating conditions.
[0026] It should be noted that the present invention does not restrict the relative volumes of the condensation section and the separation section. The upper condensation section is used to condense the liquid in the non-condensable gas, and the lower separation section is used to separate the aqueous and organic phases, which have different densities. In actual process, those skilled in the art can configure the sections based on actual conditions. In a further example of this embodiment, the partition plate 2 is positioned below the central axis of the shell 1. Considering that the material to be condensed is generally a gas phase or a gas-liquid phase, the condensation space is larger than that of the separation section, where the medium is a pure liquid phase. Therefore, the technical feature of providing a larger condensation section and a smaller separation section improves the operability of the equipment.
[0027] Example 2
[0028] Based on the multifunctional heat exchanger shown in Example 1, the multifunctional heat exchanger in this embodiment can be optionally arranged to be inclined and tilted horizontally downward along the material flow direction in the separation section; further, the multifunctional heat exchanger has a horizontal downward slope of 0.5% to 2% along the material flow direction in the separation section, which is conducive to the flow and separation of materials in the separation section.
[0029] Example 3
[0030] Based on the multifunctional heat exchanger shown in Example 1, the partition plate 2 in this embodiment can be optionally arranged to be inclined and horizontally inclined downward along the flow direction of the material to be condensed in the condensation section; further, the partition plate 2 is horizontally inclined upward along the flow direction of the material to be condensed in the condensation section with an inclination of 2% to 5%, so that the condensate flows by gravity to the inlet end of the separation section and enters the separation section.
[0031] Example 4
[0032] Based on the multifunctional heat exchanger shown in Example 1, the connection method between the partition plate 2 and the shell 1 is explored and optimized in this embodiment.
[0033] Optionally, the partition plate 2 is plugged into the shell 1, and a gap is left between the partition plate 2 and the shell 1. The partition plate 2 and the shell 1 are connected by plugging in rather than welding, so that a certain gap is left between the partition plate 2 and the cylinder, thereby forming a gas balance channel during the process, so that the condensation section and the separation section maintain pressure balance, avoiding the influence of gravity flow due to excessive pressure in the separation section; at the same time, there is no need to set a pressure balance hole, avoiding the situation where the separation effect is affected by the medium of the condensation section entering the separation section through the balance hole.
[0034] Example 5
[0035] Based on the multifunctional heat exchanger shown in Example 1, the structure of the partition plate 2 is optimized in this embodiment.
[0036] Optionally, the cross section of the partition plate 2 in the width direction is inclined from both sides to the middle; further optionally, as Figure 2 As shown, the cross-section of the partition plate 2 in the width direction has straight sides and a curve in the middle that converges toward the center. This converging shape facilitates the collection of condensate on the partition plate 2. On the one hand, it reduces the amount of condensate entering the separation section from the connection between the partition plate 2 and the shell 1. On the other hand, when the baffle 8 is installed in the condensation section, it also facilitates the formation of a liquid seal between the partition plate 2 and the baffle 8 after the collection of condensate, preventing the condensed non-condensable gas from flowing between the partition plate 2 and the baffle 8 and forming a short circuit, which further helps to improve the heat exchange effect.
[0037] Example 6
[0038] Based on the multifunctional heat exchanger shown in Example 1, this embodiment may optionally provide a plurality of baffles 8 in the condensation section. The baffles 8 facilitate contact between the material to be condensed and the heat exchange tubes 4 through deflection, thereby improving heat exchange efficiency.
[0039] Further optionally, as Figure 3 As shown, a notch is provided at the upper end of the baffle 8, so as to facilitate the discharge of non-condensable gas in the shell-side cylinder under shutdown conditions.
[0040] Further optionally, the lower end of any baffle 8 is at the same distance from the partition plate 2; the gap between the baffle 8 and the partition plate 2 remains consistent, which is conducive to the formation of liquid seal during the process and improves the heat exchange efficiency.
[0041] Example 7
[0042] Based on the multifunctional heat exchanger shown in Example 1, this embodiment can optionally set a gas barrier device 7 at the inlet end of the separation section. The barrier device can greatly reduce the gas flow rate while ensuring the passage of condensate, effectively ensuring that the oil-water two-phase liquid in the separation section is not affected by the high-speed airflow in the condensation section, and separation is carried out in a relatively stable environment, thereby improving the separation efficiency and separation effect.
[0043] In this embodiment, there is no restriction on the specific structure of the barrier device. Those skilled in the art can select a barrier device that meets the needs according to actual conditions, such as a multi-layer perforated plate and / or a wire mesh. The technical solutions thus formed are all within the protection scope of this utility model.
[0044] Example 8
[0045] Based on the multifunctional heat exchanger shown in Example 1, there is no restriction on the specific setting position of the liquid collecting bag 5. Those skilled in the art will understand that the liquid collecting bag 5 is used to enrich the water phase with a relatively higher density in oil-water separation, and utilize the difference in gravity to enrich the water phase in the liquid collecting bag 5 and discharge the water phase through the second drain port 62 to achieve the purpose of oil-water separation; in the actual process, the water collecting bag can be optionally set on the shell 1 in the middle of the separation section to improve the efficiency of oil-water separation.
[0046] In this embodiment, the structure of the liquid collecting bag 5 is optimized. Optionally, an interface meter is provided on the liquid collecting bag 5 so that the oil-water separation condition in the separation section can be monitored in real time. Optionally, the liquid collecting bag 5 is coated with a heat exchange component, and the temperature of the mixed condensate in the separation section can be adjusted by heating the liquid collecting bag 5 to achieve the best separation effect.
[0047] It should be noted that this embodiment does not limit the structure of the specific heat exchange component, which can be a heat exchange tube 4, a jacket, or a steam coil, and skilled technicians can choose according to actual conditions.
[0048] Example 9
[0049] Based on the multifunctional heat exchanger shown in Example 1, there is no restriction on the location of the first drain port 61. Those skilled in the art will understand that the first drain port 61 is used to output the oil phase after the oil-water separation of the condensate. In the actual process, the first drain port 61 can be optionally set at a position opposite to the inlet of the separation section to discharge the oil phase after sufficient oil-water separation.
[0050] In this embodiment, the structure of the first liquid discharge port 61 of the separation section is optimized.
[0051] Optionally, an overflow weir 621 is provided at the first liquid discharge port 61. By providing an overflow weir 621 of a suitable height near the first liquid discharge port 61 in the separation section, the condensate can be effectively separated from oil and water at this liquid level, and the upper organic oil phase passes through the overflow weir 621 and is discharged through the first liquid discharge port 61.
[0052] Optionally, an anti-vortex device 622 is provided at the first liquid discharge port 61, which is conducive to the rapid discharge of the medium and avoids the backflow of the accumulated liquid; at the same time, it can greatly reduce the buffer space required for the oil phase, making the equipment structure more compact.
[0053] It should be noted that this embodiment does not limit the specific structure of the anti-vortex device 622. For example, an optional anti-vortex baffle can be used, and its structural form can be selected according to the size of the discharge port.
[0054] It should be noted that the above content is a further detailed description of the present invention in conjunction with specific implementation methods, and the specific implementation of the present invention cannot be considered to be limited to these descriptions; the dimensional data of this embodiment does not limit the technical solution of this invention, but only illustrates one specific working condition. For those skilled in the art of the present invention, simple improvements and modifications can be made without departing from the concept of the present invention, and all of these should be considered to fall within the scope of protection of the present invention.
Claims
1. A multifunctional heat exchanger, characterized in that: The invention comprises a shell (1), wherein an inlet for a material to be condensed and an outlet (32) for a material to be condensed are provided on the shell (1); a partition plate (2) is provided in the shell (1), and the partition plate (2) is connected to the shell wall and one end of the inlet end of the material to be condensed or the outlet end of the material to be condensed, thereby dividing the inner cavity of the shell into an upper condensation section and a lower separation section; A plurality of heat exchange tubes (4) are provided in the condensation section, and the heat exchange tubes (4) are used to input heat exchange medium; The separation section is provided with a first liquid discharge port (61) for discharging the oil phase; the separation section is also provided with a liquid collection bag (5), and the liquid collection bag (5) is provided with a second liquid discharge port (62) for discharging the water phase.
2. The multifunctional heat exchanger according to claim 1, characterized in that: The multifunctional heat exchanger is arranged obliquely and is horizontally inclined downward along the material flow direction in the separation section.
3. The multifunctional heat exchanger according to claim 2, characterized in that: The multifunctional heat exchanger has an inclination gradient of 0.5% to 2%.
4. The multifunctional heat exchanger according to claim 1, characterized in that: The partition plate (2) is arranged obliquely and is inclined horizontally downward along the flow direction of the material to be condensed in the condensation section.
5. The multifunctional heat exchanger according to claim 4, characterized in that: The inclination of the path partition (2) is 2% to 5%.
6. The multifunctional heat exchanger according to claim 1, characterized in that: The step partition (2) is plug-connected to the shell (1), and a gap is left between the step partition (2) and the shell (1); And / or, the cross section of the partition plate (2) in the width direction is inclined from both sides to the middle; And / or, the cross section of the partition plate (2) in the width direction has straight edges on both sides and a curved line in the middle that is inclined and converges toward the center.
7. The multifunctional heat exchanger according to claim 1, characterized in that: The condensation section is provided with a plurality of baffles (8).
8. The multifunctional heat exchanger according to claim 7, characterized in that: A notch is provided at the upper end of the baffle (8); And / or, the lower end of any one of the baffles (8) is at the same distance from the path partition (2).
9. The multifunctional heat exchanger according to claim 1, characterized in that: A gas barrier device (7) is provided at the inlet end of the separation section.
10. The multifunctional heat exchanger according to claim 1, characterized in that: An interface meter is provided on the liquid collection bag (5); And / or, the liquid collecting bag (5) is coated with a heat exchange component; and / or, an overflow weir plate (621) is provided at the first liquid discharge port (61); And / or, an anti-vortex device (622) is provided at the first liquid discharge port (61).