Flow guide device of shell-and-tube heat exchanger

Abstract

The utility model discloses a shell-and-tube heat exchanger guiding device, which relates to the technical field of chemical waste heat recovery, and comprises a shell-and-tube heat exchanger shell, the right end of the shell-and-tube heat exchanger shell is fixedly connected with a shell pass inlet which is a main channel for cold side gas to enter a heat exchanger, and the shell pass inlet is communicated with the shell pass inlet. The shell-and-tube heat exchanger flow guiding device is further provided with a flow guiding mechanism, the flow guiding mechanism comprises a flow guiding plate, a set of reinforcing ribs and a set of fixing bolts, the flow guiding plate is located in the shell pass inlet, and then necessary chemical reaction heat is provided for the conversion device. The shell-and-tube heat exchanger is composed of three main parts, namely the guide plates, the reinforcing ribs and the fixing bolts, and the parts are reasonably combined with a shell pass inlet tube of the heat exchanger, so that the diffusion degree of shell pass airflow is obviously improved, and the heat transfer efficiency of the shell-and-tube heat exchanger can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical waste heat recovery, in particular to a flow guiding device for a shell and tube heat exchanger. Background Art

[0002] Shell and tube heat exchangers, as an efficient and widely used heat exchange equipment, play a vital role in multiple industries with their unique design and efficient performance. They are not only compact in structure and easy to operate and maintain, but also can adapt to various complex working environments and meet different heat exchange requirements. In the chemical industry, shell and tube heat exchangers are widely used in the heating and cooling processes of various chemical reactors. They can withstand high temperature and high pressure environments to ensure the smooth progress of chemical reactions. At the same time, the efficient heat exchange performance of shell and tube heat exchangers can also help companies reduce energy consumption and improve production efficiency.

[0003] However, during the implementation of the above technical solution, at least the following technical problems were found:

[0004] Improving the heat transfer efficiency of heat exchangers in the conversion system of sulfuric acid production has always been an industry challenge. Uneven airflow distribution will reduce heat transfer efficiency and lead to a decrease in the actual heat exchange area, which seriously affects the normal production of the conversion system and acid production system. The shell and tube heat exchangers currently used by major smelters, especially those under large volume conditions, are not equipped with flow guide devices. This will result in certain limitations such as high equipment cost and low efficiency, and is not conducive to the smooth progress of production. Utility Model Content

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the utility model provides a shell and tube heat exchanger guide device, which solves the problem that improving the heat transfer efficiency of the heat exchanger in the conversion system of sulfuric acid production has always been an industry problem. Uneven airflow distribution will cause a decrease in heat transfer efficiency, resulting in a decrease in the actual heat exchange area, which seriously affects the normal production of the conversion system and the acid production system. The shell and tube heat exchangers currently used by major smelters, especially heat exchangers under large air volume conditions, are not equipped with guide devices, which will cause certain limitations such as high cost and low efficiency of the equipment and are not conducive to the smooth progress of production.

[0007] (2) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] The shell and tube heat exchanger flow guide device includes a shell and tube heat exchanger shell. The right end of the shell and tube heat exchanger shell is fixedly connected to the shell side inlet, which is the main channel for the cold side gas to enter the heat exchanger. The shell and tube heat exchanger flow guide device is also provided with a flow guide mechanism, including a guide plate, a group of reinforcing ribs and a group of fixing bolts. The guide plate is located inside the shell side inlet and is fixedly connected to the inner wall of the shell side inlet. The guide plate is a large opening arc.

[0010] Preferably, each reinforcement rib is evenly distributed on the back of the guide plate, and each reinforcement rib is fixedly connected to the surface of the guide plate to enhance its structural strength.

[0011] Preferably, a group of bolt holes is formed through one end of the guide plate.

[0012] Preferably, one end of the shell of the shell and tube heat exchanger is penetrated by a same bolt hole, and the bolt hole on the shell of the shell and tube heat exchanger corresponds to the bolt hole on the guide plate.

[0013] Preferably, each fixing bolt is located at one end of the guide plate, and each fixing bolt corresponds to a position of a bolt hole on the guide plate.

[0014] Preferably, the fixing bolts are threadedly sleeved on the left surface of the shell of the shell and tube heat exchanger through the bolt holes.

[0015] (3) Beneficial effects

[0016] 1. Installing a curved guide plate with evenly distributed large openings on the shell-side inlet of the shell-and-tube heat exchanger without changing the pressure drop creates a sudden expansion of the flue gas at the shell-side inlet, allowing the airflow to diffuse circumferentially and be evenly distributed within the heat exchanger shell, thereby creating an effective heat transfer process with the outer wall of the heat exchange tubes. Shell-and-tube heat exchangers play a vital role in the sulfuric acid manufacturing process. They primarily provide the necessary chemical reaction heat for the conversion unit by efficiently exchanging the flue gas generated in the preheating furnace with the process flue gas. This heat plays a vital role in the chemical section of the acid production system, as it is used in the conversion of sulfur dioxide to sulfur trioxide. The shell-and-tube heat exchanger's guide device consists of three main components: the guide plate, reinforcement ribs, and fixing bolts. The rational combination of these components with the shell-side inlet tube significantly improves the diffusion of the shell-side airflow, effectively enhancing the heat transfer efficiency of the shell-and-tube heat exchanger.

[0017] 2. The device setting helps to reduce heat loss, solves the problem of excessive energy consumption, and can achieve energy conservation and emission reduction. In this way, the shell and tube heat exchanger not only improves thermal efficiency, but also solves the current problem of heat exchange depth limitation of heat exchangers. The application of this technology has significantly improved the economic benefits and environmental friendliness of the sulfuric acid production process, and made an important contribution to the sustainable development of the sulfuric acid industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural diagram of the entire utility model;

[0020] Figure 2 This is a structural diagram of the guide plate of the utility model;

[0021] Figure 3 This is a structural diagram of the reinforcing rib of the utility model.

[0022] Legend: 1. Shell-side inlet; 2. Shell of shell and tube heat exchanger; 3. Guide plate; 4. Reinforcement rib; 5. Fixing bolt; 6. Bolt hole. DETAILED DESCRIPTION

[0023] The embodiment of the present application provides a shell and tube heat exchanger guide device, which effectively solves the industry problem of improving the heat transfer efficiency of the heat exchanger in the conversion system of sulfuric acid production. Uneven airflow distribution will cause a decrease in heat transfer efficiency, resulting in a decrease in the actual heat exchange area, which seriously affects the normal production of the conversion system and the acid production system. The shell and tube heat exchangers currently used by major smelters, especially heat exchangers under large air volume conditions, are not equipped with guide devices, which will cause certain limitations such as high cost and low efficiency of the equipment and are not conducive to the smooth progress of production. A curved guide plate with evenly distributed large openings is installed on the shell inlet side of the shell and tube heat exchanger without changing the pressure drop, so that the flue gas at the shell inlet forms a sudden expansion state, causing the airflow to diffuse circumferentially and be evenly distributed. It is distributed inside the shell of the heat exchanger, thereby forming an effective heat transfer process with the outer wall of the heat exchange tube. In the manufacturing process of sulfuric acid, the shell and tube heat exchanger plays a vital role. It mainly provides the necessary chemical reaction heat for the conversion device by efficiently exchanging the furnace gas generated in the preheating furnace with the process flue gas. This heat plays a vital role in the chemical section of the acid production system because it is used in the process of converting sulfur dioxide to sulfur trioxide. The shell and tube heat exchanger guide device consists of three main parts, namely, the guide plate, the reinforcement ribs, and the fixing bolts. The reasonable combination of these parts and the shell-side inlet pipe of the heat exchanger significantly improves the diffusion degree of the shell-side airflow, which can effectively improve the heat transfer efficiency of the shell and tube heat exchanger.

[0024] Example

[0025] like Figure 1 、 Figure 2 and Figure 3As shown, the technical solution in the embodiment of the present application effectively solves the problem of improving the heat transfer efficiency of the heat exchanger in the conversion system of sulfuric acid production, which has always been an industry problem. Uneven airflow distribution will cause a decrease in heat transfer efficiency and a decrease in the actual heat exchange area, which seriously affects the normal production of the conversion system and the acid production system. The shell and tube heat exchangers currently used by major smelters, especially heat exchangers under large volume conditions, are not equipped with flow guide devices. This will result in certain limitations such as high equipment cost and low efficiency, and is not conducive to the smooth progress of production. The overall idea is as follows:

[0026] In response to the problems existing in the prior art, the present invention provides a shell and tube heat exchanger flow guide device, including a shell and tube heat exchanger shell 2, the right end of the shell and tube heat exchanger shell 2 is fixedly connected to a shell side inlet 1, which is the main channel for the cold side gas to enter the heat exchanger, and the shell and tube heat exchanger flow guide device is also provided with a flow guide mechanism, including a guide plate 3, a group of reinforcing ribs 4 and a group of fixing bolts 5. The guide plate 3 is located inside the shell side inlet 1, and the guide plate 3 is fixedly connected to the inner wall of the shell side inlet 1. The guide plate is a large-opening arc, and each reinforcing rib 4 is evenly distributed on the back of the guide plate 3. Each reinforcing rib 4 is fixedly connected to the surface of the guide plate 3 to enhance its structural strength. A group of bolt holes 6 are opened through one end of the guide plate 3, and the guide plate 3 with evenly distributed large-opening arc is installed on the shell side inlet 1 side of the shell and tube heat exchanger without changing the pressure drop. , causing the flue gas at the shell side inlet 1 to form a sudden expansion state, causing the airflow to diffuse circumferentially and be evenly distributed to the inside of the shell in the heat exchanger, thereby forming an effective heat transfer process with the outer wall of the heat exchange tube. In the manufacturing process of sulfuric acid, the shell and tube heat exchanger plays a vital role. It mainly provides the necessary chemical reaction heat for the conversion device by efficiently exchanging the furnace gas generated in the preheating furnace with the process flue gas. This heat plays a vital role in the chemical section of the acid production system because it is used in the process of converting sulfur dioxide to sulfur trioxide. The shell and tube heat exchanger guide device consists of three main parts, namely, the guide plate 3, the reinforcement rib 4, and the fixing bolt 5. The reasonable combination of these parts and the shell side inlet 1 tube of the heat exchanger significantly improves the diffusion degree of the shell side airflow, which can effectively improve the heat transfer efficiency of the shell and tube heat exchanger.

[0027] One end of the shell and tube heat exchanger shell 2 is penetrated by the same bolt hole 6, and the bolt hole 6 on the shell and tube heat exchanger shell 2 corresponds to the position of the bolt hole 6 on the guide plate 3. Each fixing bolt 5 is located at one end of the guide plate 3, and each fixing bolt 5 corresponds to the position of the bolt hole 6 on the guide plate 3. The fixing bolt 5 threads the guide plate 3 onto the left surface of the shell and tube heat exchanger shell 2 through the bolt hole 6. This device setting helps to reduce heat loss, solves the problem of excessive energy consumption, and can achieve energy conservation and emission reduction. In this way, the shell and tube heat exchanger not only improves the thermal efficiency, but also solves the current limitation problem of heat exchange depth of the heat exchanger. The application of this technology has significantly improved the economic benefits and environmental friendliness of the sulfuric acid production process, and has made important contributions to the sustainable development of the sulfuric acid industry.

[0028] Working principle:

[0029] An arc-shaped guide plate 3 with evenly distributed large openings is installed on the shell-side inlet 1 side of the shell-side heat exchanger without changing the pressure drop, so that the flue gas at the shell-side inlet 1 forms a sudden expansion state, and the airflow diffuses circumferentially and is evenly distributed to the inside of the shell of the heat exchanger, thereby forming an effective heat transfer process with the outer wall of the heat exchange tube. In the manufacturing process of sulfuric acid, the shell-and-tube heat exchanger plays a vital role. It mainly provides the necessary chemical reaction heat for the conversion device by efficiently exchanging the furnace gas generated in the preheating furnace with the process flue gas. This heat plays a vital role in the chemical section of the acid production system because it is used in the process of converting sulfur dioxide to sulfur trioxide. The shell and tube heat exchanger guide device consists of three main parts, namely the guide plate 3, the reinforcing rib 4, and the fixing bolt 5. The reasonable combination of these parts and the shell-side inlet pipe 1 of the heat exchanger significantly improves the diffusion degree of the shell-side airflow, which can effectively improve the heat transfer efficiency of the shell and tube heat exchanger. The setting of this device helps to reduce heat loss, solves the problem of excessive energy consumption, and achieves energy conservation and emission reduction. In this way, the shell and tube heat exchanger not only improves the thermal efficiency, but also solves the current problem of heat exchange depth limitation of the heat exchanger. The application of this technology has significantly improved the economic benefits and environmental friendliness of the sulfuric acid production process, and made an important contribution to the sustainable development of the sulfuric acid industry.

[0030] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all possible embodiments. However, any obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A flow guiding device for a shell and tube heat exchanger, comprising a shell and tube heat exchanger shell (2), wherein a shell-side inlet (1) is fixedly connected to the right end of the shell and tube heat exchanger shell (2), and characterized in that: The shell and tube heat exchanger flow guide device is also provided with a flow guide mechanism, including a flow guide plate (3), a group of reinforcing ribs (4) and a group of fixing bolts (5); The guide plate (3) is located inside the shell-side inlet (1), and the guide plate (3) is fixedly connected to the inner wall of the shell-side inlet (1). The guide plate (3) is in the shape of a large opening arc.

2. The flow guiding device for a shell and tube heat exchanger according to claim 1, wherein: Each of the reinforcing ribs (4) is evenly distributed on the back side of the guide plate (3); Wherein, each of the reinforcing ribs (4) is fixedly connected to the surface of the guide plate (3).

3. The flow guiding device for a shell and tube heat exchanger according to claim 1, wherein: A group of bolt holes (6) is provided through one end of the guide plate (3).

4. The flow guiding device for a shell and tube heat exchanger according to claim 3, wherein: One end of the shell and tube heat exchanger housing (2) is provided with a similar bolt hole (6); The bolt holes (6) on the shell (2) of the shell and tube heat exchanger correspond in position to the bolt holes (6) on the guide plate (3).

5. The flow guiding device for a shell and tube heat exchanger according to claim 3, wherein: Each of the fixing bolts (5) is located at one end of the guide plate (3); Wherein, each of the fixing bolts (5) corresponds to the position of a bolt hole (6) on the guide plate (3).

6. The flow guiding device for a shell and tube heat exchanger according to claim 1, wherein: The fixing bolts (5) threadably sleeve the guide plate (3) onto the left surface of the shell and tube heat exchanger housing (2) through the bolt holes (6).

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