High-pressure-resistant pre-hydrogenation feeding heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a high-pressure-resistant pre-hydrogenation feeding heat exchanger which comprises a shell, baffle plates, heat transfer pipes and a heating assembly. Baffle plates are welded in the shell at equal intervals, heat transfer pipes are arranged in the baffle plates at equal intervals in a penetrating and sleeved mode, a first end cover is fixed to one end of the shell through bolts, a second end pipe is fixed to the other end of the shell through bolts, a medium feeding pipe is fixed to one end of the top of the shell through a flange, and a heating assembly is arranged on the outer side of the medium feeding pipe. The heating assembly comprises a heat insulation sleeve arranged on the outer side of the medium feeding pipe in a sleeving mode, and electric heating wires are arranged in the position, located on the outer side of the medium feeding pipe, of the heat insulation sleeve at equal intervals. Heat exchange is conducted between a heat medium flowing into the shell through the medium feeding pipe and hydrogen flowing in the heat transfer pipe, the purpose of heating hydrogen is achieved, the heat medium flowing in the medium feeding pipe is heated through the electric heating wire, heat loss during flowing of the heat medium is reduced, the heating efficiency is improved, and the hydrogen heating device is suitable for being widely used and popularized.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically a high-pressure resistant pre-hydrogenated feed heat exchanger. Background Technology

[0002] The main function of prehydrogenation is to remove compounds such as sulfur, nitrogen, and oxygen, as well as heavy metal impurities such as arsenic, lead, copper, mercury, and sodium from feedstock oil. Prehydrogenation feed heat exchangers are key equipment in the petrochemical industry used to reduce the load on feed heating furnaces and save energy and reduce emissions. Prehydrogenation feed heat exchangers are also key equipment in the petrochemical industry used to preheat feedstocks before hydrogenation reactions.

[0003] Existing high-pressure pre-hydrogenation feed heat exchangers lack a heating mechanism and cannot heat the heat medium to improve its heat exchange efficiency or reduce heat loss during flow. Therefore, we propose a high-pressure pre-hydrogenation feed heat exchanger. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a high-pressure resistant pre-hydrogenated feed heat exchanger, which solves the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] This utility model provides the following technical solution: a high-pressure resistant pre-hydrogenated feed heat exchanger, including a shell, baffles, heat transfer tubes and heating components;

[0008] The shell is equipped with baffles welded at equal intervals inside, and heat transfer tubes are equidistantly sleeved inside the baffles. A first end cap is fixed to one end of the shell by bolts, and a second end tube is fixed to the other end of the shell by bolts. A medium feed pipe is fixed to one end of the top of the shell by a flange. A heating assembly is provided on the outside of the medium feed pipe. The heating assembly includes a heat insulation sleeve sleeved on the outside of the medium feed pipe. Electric heating wires are equidistantly sleeved inside the heat insulation sleeve outside the medium feed pipe. The inside of the heat insulation sleeve outside the electric heating wires is filled with magnesium oxide powder. A temperature controller is installed on one side of the heat insulation sleeve by a mounting base.

[0009] Furthermore, a medium discharge pipe is fixed to the top of the side of the housing away from the medium inlet pipe via a flange, and a fourth valve is connected to the top of the medium discharge pipe via a threaded groove.

[0010] Furthermore, a third valve is connected to the top of the medium feed pipe via a threaded groove, and a reserved groove is provided at the bottom of the baffle plate.

[0011] Furthermore, the detection end of the temperature controller is located inside the heat insulation sleeve, and the current output end of the temperature controller is electrically connected to the current input end of the electric heating wire through a power cord.

[0012] Furthermore, a hydrogen inlet pipe is fixed to one side of the first end cap via a flange, and the end of the hydrogen inlet pipe away from the first end cap is connected to a first valve via a threaded groove.

[0013] Furthermore, a hydrogen outlet pipe is fixed to one side of the second end pipe via a flange, and a second valve is connected to the end of the hydrogen outlet pipe away from the second end pipe via a threaded groove.

[0014] Furthermore, support seats are welded at equal intervals to the bottom of the housing.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] Open the hydrogen inlet pipe to allow hydrogen to flow into the first end cap. The hydrogen entering the first end cap flows into multiple heat transfer tubes, and then into the second end pipe. Open the second valve to allow the hydrogen in the second end pipe to flow into the equipment connection through the hydrogen outlet pipe. Open the third valve to allow high-temperature steam, hot gas, or other heat media to flow into the shell through the medium feed pipe to heat the hydrogen flowing in the heat transfer tubes and achieve heat exchange. The heat media entering the shell is blocked by multiple baffles, allowing the heat media to fully exchange heat with the heat transfer tubes in the shell.

[0017] The temperature controller is set to control the heating of the electric heating wire. The magnesium oxide powder acts as an insulator and heat conductor, absorbing the temperature after the electric heating wire is heated and transferring it to the medium feed pipe to heat the hot medium flowing in the medium feed pipe.

[0018] This high-pressure resistant pre-hydrogenated feed heat exchanger heats up hydrogen by exchanging heat between the hot medium flowing into the shell through the medium feed pipe and the hydrogen flowing in the heat transfer pipe. The hot medium flowing in the medium feed pipe is heated by an electric heating wire, which reduces heat loss during the flow of the hot medium and improves its heating efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the shell of this utility model;

[0021] Figure 3 This is a schematic diagram of the heating component structure of this utility model;

[0022] In the diagram: 1. Shell; 2. Baffle plate; 3. Heat transfer tube; 4. First end cap; 5. Second end tube; 6. Medium feed pipe; 7. Heating assembly; 701. Heat insulation sleeve; 702. Electric heating wire; 703. Magnesium oxide powder; 8. Medium discharge pipe; 9. Temperature controller; 10. Hydrogen inlet pipe; 11. First valve; 12. Hydrogen outlet pipe; 13. Second valve; 14. Fourth valve; 15. Support base; 16. Third valve; 17. Reserved slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-3 In this embodiment of the utility model, it includes a shell 1, a baffle plate 2, a heat transfer tube 3, and a heating component 7;

[0025] Inside the shell 1, baffles 2 are welded at equal intervals. Heat transfer tubes 3 are equidistantly sleeved inside the baffles 2. One end of the shell 1 is fixed with a first end cap 4 by bolts, and the other end of the shell 1 is fixed with a second end tube 5 by bolts. One end of the top of the shell 1 is fixed with a medium feed pipe 6 by a flange. A heating assembly 7 is provided outside the medium feed pipe 6. The heating assembly 7 includes a heat insulation sleeve 701 sleeved outside the medium feed pipe 6. Electric heating wires 702 are equidistantly sleeved inside the heat insulation sleeve 701 outside the medium feed pipe 6. The interior of the heat insulation sleeve 701 outside the electric heating wires 702 is filled with magnesium oxide powder 703. A thermostat 9 is installed on one side of the heat insulation sleeve 701 by a mounting base.

[0026] The top of the shell 1 on the side away from the medium inlet pipe 6 is fixed with a medium outlet pipe 8 by a flange. The top of the medium outlet pipe 8 is connected to a fourth valve 14 by a threaded groove. Opening the fourth valve 14 allows the hot medium after heat exchange inside the shell 1 to flow out through the medium outlet pipe 8.

[0027] The top of the medium feed pipe 6 is connected to a third valve 16 via a threaded groove, and the bottom of the baffle plate 2 is provided with a reserved groove 17. Opening the third valve 16 allows the hot medium to flow into the shell 1 through the medium feed pipe 6, and the reserved groove 17 allows the hot medium to flow inside the shell 1.

[0028] The detection end of the thermostat 9 is located inside the heat insulation sleeve 701. The current output end of the thermostat 9 is electrically connected to the current input end of the electric heating wire 702 through the power cord. The heating of the electric heating wire 702 and its heating temperature can be controlled by the thermostat 9.

[0029] The first end cap 4 has a hydrogen inlet pipe 10 fixed to one side by a flange. The end of the hydrogen inlet pipe 10 away from the first end cap 4 is connected to a first valve 11 by a threaded groove. Opening the first valve 11 allows hydrogen to flow into the first end cap 4 through the hydrogen inlet pipe 10.

[0030] Among them, a hydrogen outlet pipe 12 is fixed to one side of the second end pipe 5 by a flange. The end of the hydrogen outlet pipe 12 away from the second end pipe 5 is connected to a second valve 13 by a threaded groove. Opening the second valve 13 allows the heated hydrogen gas in the second end pipe 5 to flow out through the hydrogen outlet pipe 12.

[0031] Among them, support seats 15 are welded at equal intervals at the bottom of the shell 1, and multiple support seats 15 are used to support the shell 1.

[0032] The working principle of this utility model is as follows: Personnel connect the device to an external power source using a power cord, open the hydrogen inlet pipe 10 to allow hydrogen gas to flow through the inlet pipe 10 into the first end cap 4, and then the hydrogen gas entering the first end cap 4 flows into multiple heat transfer tubes 3, which then flow into the second end pipe 5. The second valve 13 is opened to allow the hydrogen gas in the second end pipe 5 to flow through the hydrogen outlet pipe 12 to the equipment connection. The third valve 16 is opened to allow high-temperature steam, hot gas, or other heat media to flow through the medium inlet pipe 6 into the shell 1, heating the hydrogen gas flowing in the heat transfer tubes 3 and achieving heat exchange. The heat media entering the shell 1 is deflected by multiple baffles. Plate 2 blocks the flow, allowing the heat medium to fully exchange heat with the heat transfer tube 3 within the shell 1. The heat medium blocked by the baffle plate 2 flows through the reserved groove 17 at its bottom. The fourth valve 14 is opened to allow the heat medium after heat exchange within the shell 1 to flow out through the medium outlet pipe 8. The temperature controller 9 is set to control the heating of the electric heating wire 702. The magnesium oxide powder 703 acts as insulation and heat conduction, absorbing the temperature after heating by the electric heating wire 702 and conducting it to the medium inlet pipe 6, thus heating the heat medium flowing in the medium inlet pipe 6, reducing heat loss during the flow of the heat medium and improving its heating efficiency.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-pressure resistant pre-hydrogenated feed heat exchanger, comprising a shell (1), baffles (2), heat transfer tubes (3) and heating components (7); Its features are: The shell (1) has baffles (2) welded at equal intervals inside. Heat transfer tubes (3) are sleeved through the baffles (2) at equal intervals. One end of the shell (1) is fixed with a first end cap (4) by bolts. The other end of the shell (1) is fixed with a second end tube (5) by bolts. One end of the top of the shell (1) is fixed with a medium feed pipe (6) by a flange. A heating assembly (7) is provided on the outside of the medium feed pipe (6). The heating assembly (7) includes a heat insulation sleeve (701) sleeved on the outside of the medium feed pipe (6). Electric heating wires (702) are sleeved at equal intervals inside the heat insulation sleeve (701) located outside the medium feed pipe (6). Magnesium oxide powder (703) is filled inside the heat insulation sleeve (701) located outside the electric heating wires (702). A thermostat (9) is installed on one side of the heat insulation sleeve (701) by a mounting base.

2. The high-pressure resistant pre-hydrogenated feed heat exchanger according to claim 1, characterized in that: The top of the housing (1) away from the medium inlet pipe (6) is fixed with a medium outlet pipe (8) by a flange, and the top of the medium outlet pipe (8) is connected to a fourth valve (14) by a threaded groove.

3. The high-pressure resistant pre-hydrogenated feed heat exchanger according to claim 1, characterized in that: The top of the medium feed pipe (6) is connected to a third valve (16) via a threaded groove, and the bottom of the baffle plate (2) is provided with a reserved groove (17).

4. The high-pressure resistant pre-hydrogenated feed heat exchanger according to claim 1, characterized in that: The detection end of the thermostat (9) is located inside the heat insulation sleeve (701), and the current output end of the thermostat (9) is electrically connected to the current input end of the electric heating wire (702) through the power line.

5. The high-pressure resistant pre-hydrogenated feed heat exchanger according to claim 1, characterized in that: A hydrogen inlet pipe (10) is fixed to one side of the first end cap (4) by a flange, and the end of the hydrogen inlet pipe (10) away from the first end cap (4) is connected to a first valve (11) by a threaded groove.

6. The high-pressure resistant pre-hydrogenated feed heat exchanger according to claim 1, characterized in that: A hydrogen outlet pipe (12) is fixed to one side of the second end pipe (5) by a flange, and a second valve (13) is connected to the end of the hydrogen outlet pipe (12) away from the second end pipe (5) by a threaded groove.

7. The high-pressure resistant pre-hydrogenated feed heat exchanger according to claim 1, characterized in that: The bottom of the shell (1) is welded with support seats (15) at equal intervals.

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