An energy-saving distillation column condensation device

Abstract

This utility model discloses an energy-saving distillation column condensation device, including a conical condenser and a spiral condensation pipeline arranged inside the condenser. An impeller assembly is arranged in the middle of the condensation pipeline within the condenser. This impeller assembly drives the heat exchange liquid within the condenser to circulate, thereby promoting the heat exchange effect of the heat exchange liquid on the condensation pipeline. The beneficial effects are: by arranging the spiral condensation pipeline within the conical condenser and utilizing the impeller assembly to promote the downward flow of the heat exchange liquid from the center of the condensation pipeline, and then the upward return flow through the conical wall of the condenser, a liquid flow effect from the inside out is formed, thereby improving the contact efficiency between the heat exchange liquid and the condensation pipeline. Simultaneously, it enables the heat exchange liquid to complete the heat exchange operation more uniformly and comprehensively with the condensation pipeline, resulting in a more ideal overall heat exchange efficiency for the condensation device.

Description

Technical Field

[0001] This utility model relates to the field of condensation equipment, specifically to an energy-saving distillation column condensation device. Background Technology

[0002] A distillation column is a tower-type gas-liquid contact device used for distillation. It utilizes the different volatility of the components in a mixture—that is, the different vapor pressures of the components at the same temperature—to transfer lighter components (low-boiling substances) from the liquid phase to the gas phase, while heavier components (high-boiling substances) from the gas phase transfer to the liquid phase, thus achieving separation. Distillation columns are also a widely used mass and heat transfer device in petrochemical production.

[0003] In the supporting equipment of distillation columns, a condenser is often equipped at the top of the column to condense the distillation vapor into liquid, forming a liquid reflux to maintain the continuous operation of the distillation process, and separating a portion of the liquid as product output. The condensation operation can also recover and reuse the heat energy in the vapor.

[0004] In existing related technologies, most condensation devices adopt conventional static heat exchange methods, such as directly guiding the condenser pipes into the heat exchange liquid, so that the heat exchange liquid can absorb the temperature of the steam in the condenser pipes, thereby completing the steam condensation operation. Although this operation method can meet the conventional use requirements, the contact area between the heat exchange liquid and the condenser pipes is small, and the heat exchange liquid cannot be made to circulate back and forth in the condensation device, so that the heat exchange liquid cannot make efficient and uniform contact heat exchange with the condenser pipes, resulting in the overall heat exchange efficiency being less than ideal. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an energy-saving distillation column condensation device that has a built-in reflux device to promote the reciprocating circulation of the heat exchange liquid, thereby improving the efficient and uniform contact heat exchange between the heat exchange liquid and the condensation pipeline.

[0006] This utility model is achieved through the following technical solution: This utility model proposes an energy-saving distillation column condensation device, including a conical condensation tank and a spiral condensation pipeline arranged inside the condensation tank. An impeller assembly is arranged in the middle of the condensation pipeline inside the condensation tank. The impeller assembly is used to drive the heat exchange liquid inside the condensation tank to circulate, so as to promote the heat exchange effect of the heat exchange liquid on the condensation pipeline. The impeller assembly includes a drive motor fixedly installed at the middle of the upper end of the condenser, a rotating shaft fixedly connected to the transmission output end of the drive motor, and an impeller component fixedly installed on the rotating shaft.

[0007] As a specific technical solution of this application, one end of the condenser pipe is a water inlet pipe and the other end is a drain pipe.

[0008] As a specific technical solution of this application, heat exchange fins are formed on both sides of the condenser pipe. The heat exchange fins have multiple layers, and the length of the multiple layers of heat exchange fins increases from top to bottom.

[0009] As a specific technical solution of this application, there are two impeller components fixedly installed on the rotating shaft, namely a primary impeller and a secondary impeller, wherein the diameter of the primary impeller is larger than that of the secondary impeller, and the primary impeller is installed at the wide diameter of the spiral-shaped condensation pipe, while the secondary impeller is installed at the narrow diameter of the spiral-shaped condensation pipe.

[0010] As a specific technical solution of this application, multiple sets of return water chambers are installed on the inner wall of the condenser, and the multiple sets of return water chambers are evenly distributed, and each chamber is equipped with a return water impeller.

[0011] As a specific technical solution of this application, the bottom port of the return water cavity is a return water inlet, and the top port is an overflow outlet.

[0012] As a specific technical solution of this application, the bottom of the condenser is respectively equipped with a heat exchange inlet pipe and a heat exchange outlet pipe.

[0013] Compared with the prior art, this utility model has the following advantages: This invention utilizes a spiral condenser pipe arrangement within a conical condenser tank and an impeller assembly to promote the downward flow of the heat exchange liquid from the center of the condenser pipe, followed by upward recirculation through the conical wall of the condenser tank. This creates an inward-outward liquid flow effect, thereby improving the contact efficiency between the heat exchange liquid and the condenser pipe. Furthermore, it allows the heat exchange liquid to more uniformly and comprehensively exchange heat with the condenser pipe, resulting in a more ideal overall heat exchange efficiency for the condensing device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an energy-saving distillation column condensation device according to the present invention; Figure 2 This is a bottom view of an energy-saving distillation column condensation device according to the present invention; Figure 3 This is a schematic diagram of the internal structure of an energy-saving distillation column condenser according to the present invention; Figure 4 This is a schematic diagram showing the structural distribution of the impeller assembly within the condenser in an energy-saving distillation column condensing device according to this utility model. Figure 5This is a schematic diagram of the structural distribution of the condenser pipes and impeller assembly in an energy-saving distillation column condenser device according to the present invention; Figure 6 This is a schematic diagram of the heat exchange fins in an energy-saving distillation column condenser according to the present invention.

[0015] The annotations in the attached figures are explained as follows: 1. Condenser tank; 2. Condenser piping; 201. Water inlet pipe; 202. Drain pipe; 203. Heat exchange fins; 3. Drive motor; 301. Rotating shaft; 302. First-stage impeller; 303. Second-stage impeller; 4. Return water chamber; 401. Return water port; 402. Overflow port; 5. Heat exchange inlet pipe; 6. Heat exchange pipe array. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] In one embodiment, such as Figure 1 , Figure 3 and Figure 4 As shown, an energy-saving distillation column condensing device in this embodiment includes a conical condenser 1 and a spiral condensing pipe 2 arranged inside the condenser 1. An impeller assembly is arranged in the middle of the condensing pipe 2 inside the condenser 1. The impeller assembly is used to drive the heat exchange liquid inside the condenser 1 to circulate, so as to promote the heat exchange effect of the heat exchange liquid on the condensing pipe 2. The impeller assembly includes a drive motor 3 fixedly mounted on the upper middle part of the condenser 1, a rotating shaft 301 fixedly connected to the transmission output end of the drive motor 3, and an impeller component fixedly mounted on the rotating shaft 301.

[0018] In this embodiment, the condenser 1 stores a suitable amount of heat exchange liquid, which is used to contact the condenser pipe 2 and complete the heat exchange operation of the condenser pipe 2. The condenser pipe 2 contains high-temperature steam generated by the distillation column operation. When the high-temperature steam enters the condenser 1 through the condenser pipe 2, it will be heated by the heat exchange liquid and change from steam to liquid. During this period, the drive motor 3 can drive the rotating shaft 301 to rotate, and at the same time drive the impeller to rotate at the center of the condenser pipe 2. The rotation of the impeller will drive the liquid in the center of the condenser pipe 2 to flow downward, and drive the liquid at the bottom of the condenser 1 to flow upward from the outside of the condenser pipe 2, forming a liquid flow effect from the inside to the outside. The conical outer wall of the condenser 1 can play an auxiliary role in the flow of the peripheral return liquid, promoting smooth overall liquid circulation.

[0019] This application provides an energy-saving distillation column condensing device with a built-in reflux device that promotes reciprocating circulation of the heat exchange liquid, thereby improving the efficient and uniform contact heat exchange between the heat exchange liquid and the condensing pipes. This solves the problem that most existing condensing devices use conventional static heat exchange methods, resulting in a small contact area between the heat exchange liquid and the condensing pipes, and the inability of the condensing device to promote reciprocating circulation of the heat exchange liquid, preventing efficient and uniform contact heat exchange and thus leading to unsatisfactory overall heat exchange efficiency. The overall approach to solving this problem is as follows: a spiral condensing pipe 2 is arranged inside a conical condensing tank 1, and an impeller assembly is used to promote the downward flow of the heat exchange liquid from the center of the condensing pipe 2, followed by upward reflux through the conical wall of the condensing tank 1, forming an inside-out liquid flow effect. This improves the contact efficiency between the heat exchange liquid and the condensing pipe 2, and allows the heat exchange liquid to complete the heat exchange operation more evenly and comprehensively with the condensing pipe 2, resulting in a more ideal overall heat exchange efficiency for the condensing device.

[0020] As one implementation method, such as Figures 1-3 and Figure 5 As shown, one end of the condenser pipe 2 is a water inlet pipe 201, and the other end is a drain pipe 202; this allows the condenser pipe 2 to better guide the high-temperature steam from top to bottom, and at the same time, it is more conducive to the flow and discharge of the medium that has changed from steam to liquid.

[0021] As one implementation method, such as Figure 3 , Figure 5 and Figure 6 As shown, heat exchange fins 203 are formed on both sides of the condenser pipe 2. The heat exchange fins 203 have multiple layers, and the length of the multiple heat exchange fins 203 increases from top to bottom. First, the heat exchange fins 203 can exchange heat with the heat exchange liquid through the heat exchange area of ​​the condenser pipe 2. Second, the multiple heat exchange fins 203 with increasing length can generate a turbulence effect on the flowing heat exchange liquid to improve the contact effect of the heat exchange liquid.

[0022] As one implementation method, such as Figures 3-5 As shown, there are two impeller components fixedly installed on the rotating shaft 301, namely a first-stage impeller 302 and a second-stage impeller 303. The diameter of the first-stage impeller 302 is larger than that of the second-stage impeller 303. The first-stage impeller 302 is installed at the wide diameter of the spiral condenser pipe 2, and the second-stage impeller 303 is installed at the narrow diameter of the spiral condenser pipe 2. The multi-stage impeller distribution can further improve the flow effect of the heat exchange liquid to ensure the overall heat exchange effect of the heat exchange liquid.

[0023] Based on the above embodiments, as a further technical solution, such as Figure 3 and Figure 4As shown, multiple sets of return water chambers 4 are installed on the inner wall of the condenser tank 1. The multiple sets of return water chambers 4 are evenly distributed, and each chamber is equipped with a return water impeller (not shown in the figure). The bottom port of the return water chamber 4 is the return water port 401, and the top port is the overflow port 402. In this technical solution, the water return impeller built into the water return chamber 4 can guide the water at the bottom of the condenser 1 upward along the return chamber 4 (i.e. the inner wall of the condenser 1), thereby further improving the circulation effect of the heat exchange liquid and further improving the heat exchange efficiency of the heat exchange liquid.

[0024] As a supplement, such as Figures 3-5 As shown, a heat exchange inlet pipe 5 and a heat exchange outlet pipe 6 are installed at the bottom of the condenser 1. The heat exchange inlet pipe 5 and the heat exchange outlet pipe 6 are used to guide the heat exchange liquid into or out of the condenser 1. When the temperature of the heat exchange liquid rises or it is not suitable for heat exchange operations, the heat exchange liquid can be replaced through the heat exchange inlet pipe 5 and the heat exchange outlet pipe 6, that is, heat energy recovery.

[0025] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the use of the terms "comprising" and "having," and any variations thereof, in this specification is intended to cover non-exclusive inclusion, indicating the presence of features, devices, components, and / or combinations thereof.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An energy efficient condensing device for distillation columns, characterized by: It includes a conical condenser (1) and a spiral condenser pipe (2) arranged inside the condenser (1). An impeller assembly is arranged in the middle of the condenser pipe (2) inside the condenser (1). The impeller assembly is used to drive the heat exchange liquid inside the condenser (1) to circulate and promote the heat exchange effect of the heat exchange liquid on the condenser pipe (2). The impeller assembly includes a drive motor (3) fixedly installed at the middle of the upper end of the condenser (1), a rotating shaft (301) fixedly connected to the transmission output end of the drive motor (3), and an impeller component fixedly installed on the rotating shaft (301).

2. An energy efficient condensing device for rectifying columns as claimed in claim 1, wherein: One end of the condenser pipe (2) is a water inlet pipe (201), and the other end is a drain pipe (202).

3. An energy efficient condensing device for rectifying columns as claimed in claim 1, wherein: Heat exchange fins (203) are formed on both sides of the condenser pipe (2). The heat exchange fins (203) have multiple layers, and the length of the multiple heat exchange fins (203) increases from top to bottom.

4. An energy efficient condensing device for distillation columns as claimed in claim 1, wherein: There are two impeller components fixedly installed on the rotating shaft (301), namely a first-stage impeller (302) and a second-stage impeller (303). The diameter of the first-stage impeller (302) is larger than that of the second-stage impeller (303). The first-stage impeller (302) is installed at the wide diameter of the spiral-shaped condenser pipe (2), and the second-stage impeller (303) is installed at the narrow diameter of the spiral-shaped condenser pipe (2).

5. An energy efficient condensing device for rectifying columns as claimed in claim 1, wherein: The inner wall of the condenser (1) is equipped with multiple sets of return water chambers (4), which are evenly distributed and each chamber is equipped with a return water impeller.

6. An energy efficient rectifying column condensing apparatus as claimed in claim 5, wherein: The bottom port of the return water chamber (4) is the return water inlet (401), and the top port is the overflow outlet (402).

7. An energy efficient condensing device for distillation columns as claimed in claim 1, wherein: The bottom of the condenser (1) is equipped with a heat exchange inlet pipe (5) and a heat exchange outlet pipe (6).

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