Gas-liquid heat exchange tank for waste heat recovery

Abstract

The utility model provides a gas-liquid heat exchange tank for waste heat recovery, and belongs to the technical field of waste heat recovery. Comprising a tank body with a vertical axis, and further comprises a heat exchange core body arranged in the tank body; the heat exchange core body comprises a stand column, a gas-phase partition plate, a liquid-phase partition plate, a gas-phase flow guide plate and a liquid-phase flow guide pipe. The circular-plate-shaped gas-phase partition plates are coaxially and fixedly connected with the stand column at intervals, and six fan-shaped liquid-phase partitions are uniformly distributed on each gas-phase partition plate; the liquid-phase flow guide pipe is vertically arranged and penetrates through all the gas-phase partition plates; the liquid-phase partition plates are used for equally dividing liquid-phase partitions on the gas-phase partition plates connected with the liquid-phase partition plates into three groups; one liquid-phase partition, adjacent to the gas-phase guide plate, on the middle gas-phase partition plate is hollowed out, and the hollowed-out liquid-phase partitions on the two adjacent middle gas-phase partition plates are located on different sides of the gas-phase guide plate respectively. According to the utility model, a gas phase can be continuously and circumferentially transmitted in the tank body in a reversing manner, and a liquid phase can be continuously and vertically transmitted in the liquid phase flow guide pipe in a reversing manner, so that the heat exchange efficiency is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery, and in particular relates to a gas-liquid heat exchange tank for waste heat recovery. Background Art

[0002] Waste heat refers to the sensible heat and latent heat generated by the failure of industrial energy-consuming devices to fully convert and utilize energy in the energy-consuming devices of the industrial enterprises that have been put into operation due to the influence of environment, design technology and other aspects. When the applicant prepared synthetic ammonia, the low-temperature methanol washing process was used for the conversion gas purification. There was a stream of methanol vapor waste heat at the process site. Therefore, a heat exchange device is needed to recover the methanol vapor waste heat.

[0003] For example, patent document CN216558364U proposes a gas-liquid heat exchanger, including a cylinder, a tube box is provided on one side of the cylinder, a head is provided on the other side, a gas phase inlet is provided on the upper part of the tube box, a gas phase outlet is provided on the lower part of the tube box, and the gas phase inlet and the gas phase outlet are connected through a heat exchange tube bundle unit; the heat exchange tube bundle unit includes a plurality of pipes. The gas-liquid heat exchanger can realize heat exchange between the gas phase and the liquid phase, but the gas-liquid heat exchanger uses a U-shaped pipe to transmit the gas phase, and the U-shaped pipe cannot effectively improve the turbulence intensity of the gas phase. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a gas-liquid heat exchange tank for waste heat recovery in view of the deficiencies of the prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A gas-liquid heat exchange tank for waste heat recovery, comprising a tank body with a vertical axis, and a heat exchange core body arranged in the tank body;

[0007] The heat exchange core comprises a column, a gas phase partition plate, a liquid phase partition plate, a gas phase guide plate and a liquid phase guide pipe;

[0008] The cylindrical column is coaxially arranged with the tank body, and both ends thereof abut against the tank body;

[0009] The circular plate-shaped gas phase partition is coaxially and fixedly connected to the column at intervals, and the periphery is sealed and abutted against the inner wall of the tank body; the gas phase partition is evenly divided into six sector-shaped liquid phase partitions;

[0010] The liquid phase partition is vertically arranged, with its outer edge sealed against the inner wall of the tank body, and the other three edges are respectively fixedly connected to the top gas phase partition, the column and the bottom gas phase partition;

[0011] The liquid phase flow guide pipe is vertically arranged and passes through all the gas phase partitions, and a plurality of the liquid phase flow guide pipes are distributed in each of the liquid phase partitions;

[0012] Three liquid phase partitions are fixedly arranged on the top surface of the top gas phase partition and the bottom surface of the bottom gas phase partition, and the liquid phase partition is used to divide the liquid phase partitions on the gas phase partition connected thereto into three groups; the top liquid phase partition and the bottom liquid phase partition are staggered at 60° with each other;

[0013] The middle gas phase partition is located between the top gas phase partition and the bottom gas phase partition, and one of the liquid phase partitions adjacent to the gas phase guide plate on all the middle gas phase partitions is hollowed out, and the hollowed-out liquid phase partitions on two adjacent middle gas phase partitions are respectively located on different sides of the gas phase guide plate.

[0014] Furthermore, two sides of the liquid phase partition are fixedly connected to the gas phase partition and the column respectively, and the remaining side is sealed against the inner wall of the tank body.

[0015] Furthermore, two liquid phase pipe openings are provided at the bottom of the tank body; a middle liquid phase partition plate of the same specification is fixedly provided between the two bottom liquid phase partition plates, and the cavities on both sides of the middle liquid phase partition plate are respectively connected to the liquid phase pipe openings.

[0016] Furthermore, two gas phase pipe openings are provided on the side of the tank body; the gas phase pipe openings are respectively connected to the lower side of the top gas phase partition and the upper side of the bottom gas phase partition, and the connecting point is located at the non-hollowed liquid phase partition on the adjacent middle gas phase partition, and the non-hollowed liquid phase partition is adjacent to the gas phase guide plate.

[0017] Furthermore, the liquid phase flow guide pipes of the same number and specification are distributed in each of the liquid phase partitions.

[0018] Furthermore, there are multiple middle gas phase partitions.

[0019] Furthermore, the liquid phase flow guide pipe is sealed at the locations where it passes through the gas phase partition plate.

[0020] Furthermore, the top end of the liquid-phase flow guide tube is flush with the top surface of the top gas-phase partition plate, and the bottom end of the liquid-phase flow guide tube is flush with the bottom surface of the bottom gas-phase partition plate.

[0021] Furthermore, a heat insulating layer or a heat insulating coating is provided on the inner wall of the tank body.

[0022] Furthermore, the bottom of the tank body is provided with supporting legs.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The gas phase in the tank of the utility model is jointly guided by the gas phase partition, the hollowed-out liquid phase partition on the gas phase partition, and the gas phase guide plate, and after flowing counterclockwise or clockwise for nearly a circle, it is transferred to another layer for reverse circumferential flow. On the one hand, since the gas phase undergoes multiple reversals and the flow process is constantly disturbed by the liquid phase guide pipe, the turbulence of the gas phase is enhanced and the flow process is longer; on the other hand, the gas phase can flow through almost all sections of the liquid phase guide pipe during the transmission process. Therefore, the utility model can improve the heat exchange efficiency.

[0025] The liquid phase in the tank of the utility model, under the joint guidance of the liquid phase partition and the liquid phase guide pipe, after flowing upward or downward, is mixed in the cavity formed by the liquid phase partition and then transmitted in the reverse direction through another part of the liquid phase guide pipe. On the one hand, since the liquid phase passes through six upward or downward pipe passes, the transmission time is longer and the heat exchange with the gas phase is more sufficient; on the other hand, the liquid phase can be mixed in the cavity formed by the liquid phase partition, thereby improving the uniformity of the liquid phase temperature.

[0026] The utility model can realize heat exchange between gas phase and liquid phase, and can utilize the liquid phase to recover the waste heat in the gas phase. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] Figure 1 : A schematic diagram of the structure of the utility model;

[0029] Figure 2 : A partial cross-sectional view of the utility model;

[0030] Figure 3 : One of the structural schematic diagrams of the heat exchange core of the utility model;

[0031] Figure 4 : The second structural diagram of the heat exchange core of the utility model;

[0032] Figure 5 : The third structural diagram of the heat exchange core of the utility model;

[0033] Wherein: 1-tank body, 11-leg, 121-first gas phase pipe opening, 122-second gas phase pipe opening, 131-first liquid phase pipe opening, 132-second liquid phase pipe opening, 2-heat exchange core, 21-column, 221-top gas phase partition, 222-bottom gas phase partition, 223-middle gas phase partition, 231-top liquid phase partition, 232-bottom liquid phase partition, 233-middle liquid phase partition, 24-gas phase guide plate, 25-liquid phase guide pipe. DETAILED DESCRIPTION

[0034] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments and drawings, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0035] Example 1: See Figure 1-Figure 5 , the purpose of this embodiment is to provide a gas-liquid heat exchange tank for waste heat recovery.

[0036] The gas-liquid heat exchanger includes a vertically arranged and sealed circular tank body 1 and a heat exchange core 2 arranged inside the tank body 1. The tank body 1 is supported and fixed by a plurality of legs 11 arranged at the bottom; the bottom of the tank body 1 is provided with two liquid phase pipe openings, one inlet and one outlet, respectively, a first liquid phase pipe opening 131 and a second liquid phase pipe opening 132; the side of the tank body 1 is provided with two gas phase pipe openings, one inlet and one outlet, respectively, a first gas phase pipe opening 121 located at the upper part and a second gas phase pipe opening 122 located at the lower part. In order to reduce heat loss, a heat insulation layer or heat insulation coating is provided on the inner wall of the tank body 1.

[0037] The heat exchange core 2 includes a column 21, a gas phase partition, a liquid phase partition, a gas phase guide plate 24 and a liquid phase guide tube 25. The column 21 is cylindrical and is coaxially arranged with the tank body 1, with the upper end abutting against the top of the tank body 1 and the lower end abutting against the bottom of the tank body 1. The gas phase partitions are all circular plate-shaped, coaxially arranged with the tank body 1, and fixedly arranged on the column 21 at equal intervals, and the outer diameter is consistent with the inner diameter of the tank body 1, so that the peripheral side of the gas phase partition can be sealed and connected with the inner wall of the tank body 1. The gas phase partition includes a top gas phase partition 221, a bottom gas phase partition 222, and a plurality of middle gas phase partitions 223 located between the top gas phase partition 221 and the bottom gas phase partition 222.

[0038] The gas phase partition is evenly divided into six 60° sector-shaped liquid phase partitions, and the liquid phase partitions on different gas phase partitions are aligned along the axial direction of the gas phase partition; each liquid phase partition is provided with a plurality of vias, and the number of vias between different liquid phase partitions is the same, and the vias on different gas phase partitions are all aligned along the axial direction.

[0039] The liquid phase flow guide tube 25 is arranged in a direction parallel to the axis of the tank body 1, and passes through all the gas phase partitions along the corresponding through holes, and a liquid phase flow guide tube 25 is arranged in each through hole; the top end of the liquid phase flow guide tube 25 is flush with the top surface of the top gas phase partition 221, and the bottom end is flush with the bottom surface of the bottom gas phase partition 222; the outer diameter of the liquid phase flow guide tube 25 is consistent with the inner diameter of the through hole, so that the liquid phase flow guide tube 25 and the through hole can be sealed and connected.

[0040] The gas phase guide plate 24 is in the shape of a square plate, vertically arranged, and extends along the radial direction of the tank body 1, penetrating and connecting all the gas phase partitions along the common edge of two adjacent liquid phase partitions; the top side of the gas phase guide plate 24 is fixedly connected to the top gas phase partition 221, the bottom side is fixedly connected to the bottom gas phase partition 222, the inner side is fixedly connected to the column 21, and the outer side is sealed to the inner wall of the tank body 1.

[0041] A certain middle gas phase partition 223 is located in the hollowed-out liquid phase partition on one side of the gas phase guide plate 24, and the middle gas phase partition 223 adjacent to the middle gas phase partition 223 is located in the hollowed-out liquid phase partition on the other side of the gas phase guide plate 24. The first gas phase pipe port 121 is located between the top gas phase partition 221 and the middle gas phase partition 223 adjacent to the lower side thereof, the second gas phase pipe port 122 is located between the bottom gas phase partition 222 and the middle gas phase partition 223 adjacent to the upper side thereof, and both the first gas phase pipe port 121 and the second gas phase pipe port 122 are located at the non-hollowed-out liquid phase partition of the middle gas phase partition 223 adjacent thereto, and the non-hollowed-out liquid phase partition is adjacent to the gas phase guide plate 24.

[0042] like Figure 3-Figure 5 In the figure, G1 is the corresponding position of the first gas phase pipe port 121, and G2 is the corresponding position of the second gas phase pipe port 122. After the gas to be heat exchanged is input into the tank body 1 from a gas phase pipe port, the gas first rotates clockwise or counterclockwise for nearly one circle, and then flows from the hollow liquid phase partition of the current middle gas phase partition 223 to the adjacent middle gas phase partition 223, and then rotates in the opposite direction for nearly one circle, and then flows again from the hollow liquid phase partition of the middle gas phase partition 223 to the adjacent middle gas phase partition 223. After the gas flows through all the middle gas phase partitions 223, it is output from another gas phase pipe port. When the gas flows in the tank body 1, on the one hand, it is blocked by the gas phase guide plate 24 and guided by the hollow liquid phase partition, and the gas constantly changes direction, so that the gas forms turbulence, and the degree of gas turbulence is enhanced, thereby having a higher heat exchange efficiency; on the other hand, the gas can flow through almost all sections of the liquid phase guide tube 25 during the propagation process, thereby having a higher heat exchange efficiency.

[0043] The liquid phase partitions include three top liquid phase partitions 231, three bottom liquid phase partitions 232 and one middle liquid phase partition 233. The top liquid phase partitions 231 are distributed along the radial direction of the top gas phase partition 221, the angle between adjacent top liquid phase partitions 231 is 120°, and two adjacent top liquid phase partitions 231 completely cover two adjacent liquid phase partitions of the top gas phase partition 221; the bottom edges of the top liquid phase partitions 231 are fixedly connected to the top surface of the top gas phase partition 221, the inner sides are fixedly connected to the columns 21, and the remaining sides are sealed and connected to the inside of the tank body 1. The bottom liquid phase partitions 232 are distributed along the radial direction of the bottom gas phase partition 222, the angle between adjacent bottom liquid phase partitions 232 is 120°, and two adjacent bottom liquid phase partitions 232 completely cover two adjacent liquid phase partitions of the bottom liquid phase partition 232; the top edges of the bottom liquid phase partitions 232 are fixedly connected to the bottom surface of the bottom gas phase partition 222, the inner sides are fixedly connected to the columns 21, and the remaining sides are sealed and connected to the inside of the tank body 1. The top liquid phase partitions 231 and the bottom liquid phase partitions 232 are staggered at 60°.

[0044] The middle liquid phase partition plate 233 is arranged between two bottom liquid phase partition plates 232, and has the same angle with the bottom liquid phase partition plates 232 on both sides; the top edge of the middle liquid phase partition plate 233 is fixedly connected to the bottom surface of the bottom gas phase partition plate 222, the inner side edge is fixedly connected to the column 21, and the other side edges are sealedly connected to the inside of the tank body 1. The positions between the middle liquid phase partition plate 233 and the bottom liquid phase partition plates 232 on both sides correspond to the first liquid phase pipe port 131 and the second liquid phase pipe port 132, respectively.

[0045] like Figure 4-Figure 5 In the figure, L1 is the corresponding position of the first liquid phase pipe port 131, and L2 is the corresponding position of the second liquid phase pipe port 132. When the liquid to be heat exchanged is input into the tank body 1 from a certain liquid phase pipe port, the liquid first flows from bottom to top along the connected liquid phase guide pipe 25 to between the two top liquid phase partitions 231, and then the liquid returns from the liquid phase guide pipe 25 in the liquid phase partition adjacent to the top gas phase partition 221 and flows downward, and is output from another liquid phase pipe port after multiple up and down flows. During the flow process, the liquid performs uniform heat exchange with the gas flowing inside the tank body 1, thereby absorbing the heat in the gas.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A gas-liquid heat exchange tank for waste heat recovery, comprising a tank body with a vertical axis, characterized in that: It also includes a heat exchange core disposed in the tank body; The heat exchange core comprises a column, a gas phase partition plate, a liquid phase partition plate, a gas phase guide plate and a liquid phase guide pipe; The cylindrical column is coaxially arranged with the tank body, and both ends thereof abut against the tank body; The circular plate-shaped gas phase partition is coaxially and fixedly connected to the column at intervals, and the periphery is sealed against the inner wall of the tank body; the gas phase partition is evenly divided into six sector-shaped liquid phase partitions; The liquid phase partition is vertically arranged, with its outer edge sealed against the inner wall of the tank body, and the other three edges are respectively fixedly connected to the top gas phase partition, the column and the bottom gas phase partition; The liquid phase flow guide pipe is vertically arranged and passes through all the gas phase partitions, and a plurality of the liquid phase flow guide pipes are distributed in each of the liquid phase partitions; Three liquid phase partitions are fixedly arranged on the top surface of the top gas phase partition and the bottom surface of the bottom gas phase partition, and the liquid phase partition is used to divide the liquid phase partitions on the gas phase partition connected thereto into three groups; The top liquid phase partition plate and the bottom liquid phase partition plate are staggered at 60°. The middle gas phase partition is located between the top gas phase partition and the bottom gas phase partition, and one of the liquid phase partitions adjacent to the gas phase guide plate on all the middle gas phase partitions is hollowed out, and the hollowed-out liquid phase partitions on two adjacent middle gas phase partitions are respectively located on different sides of the gas phase guide plate.

2. The gas-liquid heat exchange tank for waste heat recovery according to claim 1, characterized in that: Two sides of the liquid phase partition are respectively fixedly connected to the gas phase partition and the column, and the remaining side is sealed against the inner wall of the tank body.

3. The gas-liquid heat exchange tank for waste heat recovery according to claim 1, characterized in that: The bottom of the tank body is provided with two liquid phase pipe openings; a middle liquid phase partition plate of the same specification is fixedly arranged between the two bottom liquid phase partition plates, and the cavities on both sides of the middle liquid phase partition plate are respectively connected with the liquid phase pipe openings.

4. The gas-liquid heat exchange tank for waste heat recovery according to claim 1, characterized in that: Two gas phase pipe openings are provided on the side of the tank body; the gas phase pipe openings are respectively connected with the lower side of the top gas phase partition and the upper side of the bottom gas phase partition, and the connecting point is located at the non-hollowed out liquid phase partition on the adjacent middle gas phase partition, and the non-hollowed out liquid phase partition is adjacent to the gas phase guide plate.

5. The gas-liquid heat exchange tank for waste heat recovery according to claim 1, characterized in that: The same number and same specification of the liquid phase flow guide pipes are distributed in each of the liquid phase partitions.

6. The gas-liquid heat exchange tank for waste heat recovery according to claim 1, characterized in that: There are multiple middle gas phase partitions.

7. The gas-liquid heat exchange tank for waste heat recovery according to claim 1, characterized in that: The liquid phase flow guide pipe is sealed at the point where it passes through the gas phase partition plate.

8. The gas-liquid heat exchange tank for waste heat recovery according to claim 1, characterized in that: The top end of the liquid phase flow guide tube is flush with the top surface of the top gas phase partition plate, and the bottom end of the liquid phase flow guide tube is flush with the bottom surface of the bottom gas phase partition plate.

9. The gas-liquid heat exchange tank for waste heat recovery according to claim 1, characterized in that: A heat insulation layer or a heat insulation coating is arranged on the inner wall of the tank body.

10. The gas-liquid heat exchange tank for waste heat recovery according to claim 1, characterized in that: The bottom of the tank body is provided with supporting legs.

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