High-efficiency in-tower heat exchange plate

Abstract

The utility model discloses a high-efficiency in-tower heat exchange plate which comprises a plurality of first heat exchange baffles and a plurality of second heat exchange baffles which are located in an inner cavity of a tower body and vertically arranged at intervals, and each first heat exchange baffle comprises a hollow inverted-truncated-cone-shaped first plate body connected with the inner wall of the tower body. The first heat exchange baffle comprises a hollow right-truncated-cone-shaped second plate body connected with the inner wall of the tower body, a plurality of second flow channels are formed in the outer circumferential wall of the second plate body, and the upper end of the second plate body is connected with a sprue spreader through a transverse column. According to the utility model, liquid can be more uniformly contacted with gas in the flowing process, so that the uniformity of fluid distribution and heat distribution is improved, the heat exchange efficiency is improved, coke powder accumulation can be prevented, and the contact uniformity of gas and liquid and the heat exchange efficiency are improved; and the heat exchange efficiency of gas and liquid passing through the first heat exchange baffle and the second heat exchange baffle in the tower is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange plates, in particular to a high-efficiency heat exchange plate in a tower. Background Art

[0002] Currently, the heat exchange plates used for direct heat exchange between high-temperature oil and gas and liquid oil products in steam venting towers or fractionating towers in China mainly include herringbone plates, semicircular plates, and tray plates. These heat exchange plates are installed in the tower for direct heat exchange between high-temperature oil and gas and liquid oil products. Among them, herringbone plates and semicircular plates are generally installed horizontally. The liquid on the upper plate flows to the lower plate. During the downward flow of the liquid, it cross-flows with the high-temperature gas, achieving heat exchange, cooling the gas and heating the liquid. Generally, 6 to 8 layers of these heat exchange plates are installed in the fractionating tower for direct heat exchange between high-temperature oil and gas and liquid oil products. The tray plate is a disc-shaped plate. It is the main component that provides gas-liquid mass and heat transfer in the tower. Its main function is to enable close heat and mass exchange between the two phases of the two fluids to achieve the purpose of separating the components of the liquid mixture or gas mixture.

[0003] However, these heat exchange plates all present certain challenges when used within a tower. For example, the flow direction of gas and liquid above and below the herringbone and semicircular plates is unstable, affecting the uniformity of gas and liquid distribution. If the liquid or gas flows sideways, the fluid and heat distribution on these plates can become uneven, causing localized overheating, which in turn affects the heat transfer between the gas and liquid, resulting in low heat transfer efficiency. Furthermore, since the trays are installed horizontally, coke can easily accumulate on them. This accumulation can clog the openings on the trays, affecting normal heat exchange operations and resulting in low gas and liquid heat transfer efficiency. Utility Model Content

[0004] In order to solve the technical problems in the prior art such as unstable flow direction of gas and liquid above and below the herringbone plates and semicircular plates, uneven fluid distribution and heat distribution, resulting in local overheating, and accumulated coke powder clogging the openings on the tray plates, affecting the normal heat exchange operation of the tray plates, and resulting in low heat exchange efficiency, the present utility model provides the following technical solutions.

[0005] The utility model discloses a high-efficiency heat exchange plate in a tower, comprising a plurality of first heat exchange baffles and a plurality of second heat exchange baffles arranged at vertical intervals in the inner cavity of the tower body, wherein the first heat exchange baffle comprises a first hollow inverted truncated cone-shaped plate body connected to the inner wall of the tower body, and a plurality of first flow channels are provided on the inner peripheral wall of the first plate body, and the second heat exchange baffle comprises a second hollow right truncated cone-shaped plate body connected to the inner wall of the tower body, and a plurality of second flow channels are provided on the outer peripheral wall of the second plate body, and the upper end of the second plate body is connected to a diverter cone through a horizontal column.

[0006] As a further technical solution, the inner diameter of the lower opening of the second plate body is not smaller than the inner diameter of the lower opening of the first plate body.

[0007] As a further technical solution, a first protrusion is provided between adjacent first flow channels, a second protrusion is provided between adjacent second flow channels, and the first flow channels and the second flow channels are correspondingly or staggeredly provided in the vertical direction.

[0008] As a further technical solution, the diverter cone is an inverted cone structure, which facilitates the diversion of the gas rising in the tower body.

[0009] As a further technical solution, the diverter cone is a hollow structure.

[0010] As a further technical solution, both the outer peripheral wall of the first plate body and the outer peripheral wall of the second plate body are provided with spiral groove channels for gas flow.

[0011] As a further technical solution, the first plate body and the second plate body are respectively provided with a first mounting block and a second mounting block connected to the inner wall of the tower body.

[0012] The beneficial effects of the present invention are as follows: the heat exchange plate of the present invention is composed of a first heat exchange baffle and a second heat exchange baffle, the first heat exchange baffle and the second heat exchange baffle being respectively a hollow inverted truncated cone structure and a right truncated cone structure, and the first heat exchange baffle and the second heat exchange baffle being respectively provided with a first flow channel and a first protrusion for liquid flow and a second flow channel and a second protrusion, which can make the liquid contact with the gas more evenly during the flow process, improve the uniformity of fluid distribution and heat distribution, and improve the heat exchange efficiency. The liquid flowing down the second heat exchange baffle can flush the first heat exchange baffle to prevent the accumulation of coke powder, and the upper end of the second heat exchange baffle is provided with a diverter cone, which can further disperse the gas in the process of rising from bottom to top, improve the uniformity of contact between gas and liquid and the heat exchange efficiency, and improve the heat exchange efficiency of the first heat exchange baffle and the second heat exchange baffle in the tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the installation position of the high-efficiency heat exchange plate in the tower of the utility model;

[0014] Figure 2 This is a schematic structural diagram of the high-efficiency heat exchange plate in the tower of the utility model;

[0015] Figure 3 This is a schematic diagram of another perspective of the high-efficiency heat exchange plate in the tower of the utility model;

[0016] Figure 4 This is a top view of the high-efficiency heat exchange plate in the tower of the utility model;

[0017] In the figure: 1-tower body; 2-first heat exchange baffle; 201-first plate body; 202-first flow channel; 203-first protrusion; 204-first mounting block; 3-second heat exchange baffle; 301-second plate body; 302-second flow channel; 303-second protrusion; 304-second mounting block; 305-horizontal column; 306-diverter cone. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is 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 for the purpose of explaining the present invention and are not intended to limit the present invention. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other unless there is a conflict.

[0019] In the description of this utility model, it should be understood that the terms "upper" and "lower" are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc. are used solely for descriptive purposes and should not be construed to indicate or imply relative importance or implicitly specify the quantity of the technical features referred to. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0020] like Figure 1 and Figure 2 As shown, in a preferred embodiment, the present invention provides a high-efficiency tower heat exchange plate for use in a vent tower or distillation tower requiring heat exchange between gas and liquid, comprising at least one first heat exchange baffle 2 and at least one second heat exchange baffle 3. In this embodiment, the first heat exchange baffle 2 is located at the bottom, and the second heat exchange baffle 3 is located at the top, and the two constitute the high-efficiency tower heat exchange plate of the present invention. Depending on the heat load and tower diameter within the tower, a plurality of first heat exchange baffles 2 and a plurality of second heat exchange baffles 3 are vertically spaced within the tower. That is, one first heat exchange baffle 2 and one second heat exchange baffle 3 constitute a tower heat exchange plate of the present invention. Multiple heat exchange plates are vertically arranged within the tower body 1, wherein the topmost second heat exchange baffle 3 is the liquid feed plate.

[0021] In a preferred embodiment, the first heat exchange baffle 2 includes a first plate 201 connected to the inner wall of the tower body 1, and the second heat exchange baffle 3 includes a second plate 301 connected to the inner wall of the tower body 1. The first plate 201 and the second plate 301 are respectively provided with a first mounting block 204 and a second mounting block 304 connected to the inner wall of the tower body 1. The first mounting block 204 and the second mounting block 304 can be welded or bolted to the tower body 1, and the present invention does not specifically limit them. The first plate 201 has a hollow inverted frustum-shaped structure. The upper inner wall of the first plate 201 is provided with a plurality of first flow channels 202, which guide the liquid to flow evenly downward. The second plate 301 has a hollow right frustum-shaped structure. The outer wall of the second plate 301 is provided with a plurality of second flow channels 302, which are also used to guide the liquid to flow evenly downward and exchange heat with the gas.

[0022] In a preferred embodiment, the upper end of the second plate 301 is connected to a diverter cone 306 through a horizontal column 305. The diverter cone 306 is an inverted cone structure, which is convenient for diverting the gas rising in the axial direction of the tower body 1. Preferably, the diverter cone 306 is a hollow structure with a smaller cross-section at the lower end, which diverts the gas while facilitating the flow of liquid.

[0023] like Figure 3 and Figure 4 As shown, in a preferred embodiment, the outer diameter of the upper end of the first plate body 201 is the same as the inner diameter of the tower body 1. At this time, the liquid and gas can only pass through the middle of the first plate body 201, and the inner diameter of the lower opening of the second plate body 301 is not less than the inner diameter of the lower opening of the first plate body 201. Therefore, the liquid flowing in the first flow channel 202 and the second flow channel 302 flows more evenly in the radial and circumferential directions of the first plate body 201 and the second plate body 301, which is convenient for heat exchange with the high-temperature gas.

[0024] In a preferred embodiment, the first flow channels 202 and the second flow channels 302 are arranged in a corresponding or staggered manner in the vertical direction, facilitating uniform vertical flow of liquid between the first plate 201 and the second plate 301. A first protrusion 203 is provided between adjacent first flow channels 202. When liquid flows through a first flow channel 202, it can overflow into the first protrusion 203 and enter the adjacent first flow channel 202, thereby facilitating uniform flow of liquid within the first plate 201 and even heat distribution. A second protrusion 303 is provided between adjacent second flow channels 302, serving the same function as the first protrusion 203 and will not be further described.

[0025] In a preferred embodiment, the outer wall of the first plate body 201 and the inner wall of the second plate body 301 are both provided with a spiral groove channel (not shown) for gas flow. The spiral groove channel can facilitate the gas to spiral upward evenly and the contact between the gas and the first plate body 201 and the second plate body 301 facilitates heat exchange with the liquid.

[0026] The preferred specific implementation methods and embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above implementation methods and embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes or equivalent substitutions can be made without departing from the concept of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments that fall within the scope of the claims of this application belong to the scope of protection of the present invention.

Claims

1. A high-efficiency heat exchange plate in a tower, comprising a plurality of first heat exchange baffles (2) and a plurality of second heat exchange baffles (3) vertically spaced apart in the inner cavity of a tower body (1), characterized in that: The first heat exchange baffle (2) comprises a first hollow inverted truncated cone-shaped plate (201) connected to the inner wall of the tower body (1), and a plurality of first flow channels (202) are provided on the inner peripheral wall of the first plate body (201). The second heat exchange baffle (3) comprises a second hollow right truncated cone-shaped plate (301) connected to the inner wall of the tower body (1), and a plurality of second flow channels (302) are provided on the outer peripheral wall of the second plate body (301). The upper end of the second plate body (301) is connected to a diverter cone (306) via a transverse column (305).

2. The high-efficiency heat exchange plate in a tower according to claim 1, characterized in that: The inner diameter of the lower opening of the second plate body (301) is not less than the inner diameter of the lower opening of the first plate body (201).

3. The high-efficiency heat exchange plate in a tower according to claim 1, characterized in that: A first protrusion (203) is provided between adjacent first flow channels (202), and a second protrusion (303) is provided between adjacent second flow channels (302). The first flow channels (202) and the second flow channels (302) are correspondingly arranged or staggered in the vertical direction.

4. The high-efficiency heat exchange plate in a tower according to claim 1, characterized in that: The diverter cone (306) is an inverted cone structure, which facilitates the diversion of the gas rising in the tower body (1).

5. The high-efficiency heat exchange plate in a tower according to claim 1, characterized in that: The diverter cone (306) is a hollow structure.

6. The high-efficiency tower heat exchange plate according to claim 1, characterized in that: The outer peripheral wall of the first plate body (201) and the inner peripheral wall of the second plate body (301) are both provided with spiral groove channels for gas flow.

7. The high-efficiency heat exchange plate in a tower according to claim 1, characterized in that: The first plate body (201) and the second plate body (301) are respectively provided with a first mounting block (204) and a second mounting block (304) connected to the inner wall of the tower body (1).

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