A hydrogen sulfide removal column overhead condenser

Abstract

The utility model relates to a kind of desulfurization hydrogen tower top condensers including main pipe body, pipe box and heat exchange tube, the left and right sides end of main pipe body is respectively provided with two outer tube sheets, the left and right sides inside main pipe body are respectively provided with two inner tube sheets, inner tube sheet and outer tube sheet are spaced apart, and inner tube sheet, outer tube sheet and main pipe body inner wall are enclosed into protective grid bin, there is protective grid bin between inner tube sheet and outer tube sheet, the contact of corrosive gas containing solid impurities or easy crystallization medium and pipe box is isolated, the blockage and corrosion caused by impurities accumulation between inner tube sheet and outer tube sheet are avoided, meanwhile, the protective grid bin provides independent buffer and maintenance space, so that cleaning scale and solid impurities are more convenient, maintenance difficulty and downtime are significantly reduced, so as to prolong the service life of condenser and improve the long-term operation stability and reliability of desulfurization hydrogen tower top condensing system.

Description

Technical Field

[0001] This utility model relates to the field of condenser technology, and in particular to a top condenser for a desulfurization tower. Background Technology

[0002] Most current desulfurization tower top condensers adopt a single tube sheet or compact double tube sheet structure. The compact double tube sheet structure usually arranges the inner tube sheet and outer tube sheet closely to prevent gas or liquid from leaking out of the inner tube sheet into the tube box outside the outer tube sheet and contaminating the tube box. However, when faced with corrosive gases containing solid impurities or easily crystallizing media, this structure is prone to blockage or scale buildup between the outer and inner tube sheets, making maintenance and cleaning difficult and affecting the long-term stable operation of the condenser.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses a top condenser for a desulfurization tower, which solves the problem that when faced with corrosive gases containing solid impurities or easily crystallizing media, blockage or scale buildup can easily occur between the outer and inner tube sheets, making maintenance and cleaning difficult and affecting the long-term stable operation of the condenser.

[0005] The technical solution adopted in this utility model is as follows: A desulfurization tower top condenser includes: The main body is horizontally oriented, with two outer tube plates at its left and right ends, and two inner tube plates at its left and right sides inside the main body. The inner tube plates and outer tube plates are spaced apart, and the inner tube plates, outer tube plates, and inner wall of the main body form a protective compartment. The two inner tube plates and the main body form a condensation compartment. An air inlet pipe is connected to the upper left side of the condensation compartment, and a liquid outlet pipe is connected to the lower right side of the condensation compartment. The tube box has two tube boxes, which are respectively connected to the outside of the two outer tube sheets. One of the tube boxes is provided with a cooling water discharge pipe and a cooling water inlet pipe at its upper and lower ends, respectively. The heat exchange tubes are arranged in a plurality of them along the axial direction of the main tube body. The left and right sides of the heat exchange tubes pass through two inner tube sheets and are connected to two outer tube sheets, which in turn connect to the two tube boxes.

[0006] A further technical solution is that the upper and lower ends of the protective compartment are respectively connected to a first vent pipe and a first discharge pipe.

[0007] A further technical solution is that an anti-impact plate is also provided inside the condenser compartment, and the anti-impact plate is located at intervals at the lower end of the air inlet pipe.

[0008] A further technical solution is that one of the pipe boxes has a partition plate arranged along the axial direction of the main pipe, which divides the interior into a first cavity and a second cavity, and the other pipe box has a third cavity; the cooling water discharge pipe is connected to the first cavity, and the cooling water inlet pipe is connected to the second cavity.

[0009] A further technical solution is that the upper and lower ends of the third cavity are respectively connected to a third venting pipe and a third draining pipe.

[0010] A further technical solution is that the condensing grid chamber is provided with several baffles, the baffles are semi-circular in shape, and the several baffles are evenly and alternately arranged from right to left along the front and rear ends of the condensing grid chamber.

[0011] A further technical solution is that a number of tie rods are provided on the left side of the inner tube plate located on the right side of the main tube body. The tie rods are fitted with spacer tubes, and the tie rods and spacer tubes pass through a number of baffles and fix the baffles.

[0012] A further technical solution is that the lower end of the left side of the condensing grid compartment is connected to a second drain pipe, and the upper end of the right side of the condensing grid compartment is connected to a second vent pipe.

[0013] A further technical solution is that the upper end of the condensation compartment is also connected to a balance pipe.

[0014] The beneficial effects of this utility model embodiment are as follows: (i) A desulfurization tower top condenser includes a main body, a tube box, and heat exchange tubes. Two outer tube sheets are respectively installed at the left and right ends of the main body, and two inner tube sheets are respectively installed on the left and right sides inside the main body. The inner tube sheets and outer tube sheets are spaced apart, and the inner tube sheets, outer tube sheets, and inner wall of the main body form a protective grid. The protective grid between the inner tube sheets and outer tube sheets isolates corrosive gases containing solid impurities or easily crystallizing media from contact with the tube box, avoiding blockage and corrosion caused by the accumulation of impurities between the inner tube sheets and outer tube sheets. At the same time, the protective grid provides an independent buffer and maintenance space, making it easier to clean scale and solid impurities, significantly reducing maintenance difficulty and downtime, thereby extending the service life of the condenser and improving the long-term operational stability and reliability of the desulfurization tower top condensation system.

[0015] (ii) Furthermore, the upper and lower ends of the protective cell are respectively connected to a first vent pipe and a first drain pipe. The first vent pipe is used to discharge non-condensable gases or vapors accumulated in the protective cell to prevent gas accumulation from affecting the insulation effect or causing pressure fluctuations. The first drain pipe is used to drain corrosive liquids, solid impurities or cleaning fluids deposited in the protective cell to prevent impurities from crystallizing and clogging or corroding the tube sheet and the ends of the heat exchange tubes, ensuring that the isolation and buffering function of the protective cell is effective and easy to maintain.

[0016] (iii) Furthermore, anti-impact plates are also installed inside the condenser compartment, with the anti-impact plates spaced at the lower end of the inlet pipe. The anti-impact plates effectively block and disperse the high-speed corrosive gas flow, preventing the airflow from directly impacting the internal components such as baffles and heat exchange tubes inside the condenser compartment, preventing structural wear and corrosion caused by long-term erosion, extending the service life of internal components, and promoting more uniform gas distribution throughout the condenser compartment, thereby improving heat exchange efficiency. Attached Figure Description

[0017] Figure 1 This is a front view schematic diagram of the internal structure of the top condenser of a desulfurization tower according to the present invention.

[0018] Figure 2 This is a top view schematic diagram of the baffle arrangement in the top condenser of a desulfurization tower according to the present invention.

[0019] Figure 3 This is a front view of the internal structure of the spaced tube installation in the top condenser of a desulfurization tower according to the present invention.

[0020] In the picture: 100. Main tube sheet; 101. Outer tube sheet; 102. Inner tube sheet; 110. Protective compartment; 111. First vent pipe; 112. First drain pipe; 120. Condensation compartment; 121. Air inlet pipe; 122. Liquid outlet pipe; 123. Second drain pipe; 124. Second vent pipe; 125. Balance pipe; 200. Tube box; 201. Cooling water inlet pipe; 202. Cooling water outlet pipe; 203. First cavity; 204. Second cavity; 205. Third cavity; 206. Third vent pipe; 207. Third drain pipe; 300. Heat exchanger tube; 400. Baffle plate; 500. Anti-impact plate; 600. Baffle plate; 601. Tie rod; 602. Spacing tube. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] First embodiment: A desulfurization tower top condenser includes a main body 100, a tube box 200, and heat exchange tubes 300.

[0023] like Figure 1 As shown, the main pipe body 100 is horizontally oriented. Two outer tube plates 101 are respectively installed at the left and right ends of the main pipe body 100, and two inner tube plates 102 are respectively installed on the left and right sides inside the main pipe body 100. The inner tube plates 102 and outer tube plates 101 are spaced apart, and the inner tube plates 102, outer tube plates 101, and the inner wall of the main pipe body 100 form a protective compartment 110. The two inner tube plates 102 and the main pipe body 100 form a condensation compartment 120. An air inlet pipe 121 is connected to the upper left side of the condensation compartment 120, and a liquid outlet pipe 122 is connected to the lower right side of the condensation compartment 120. For example, a second drain pipe 123 is connected to the lower left side of the condensation compartment 120, and a second vent pipe 124 is connected to the upper right side of the condensation compartment 120.

[0024] like Figure 1 As shown, there are two tube boxes 200, which are respectively connected to the outer sides of two outer tube sheets 101. One tube box 200 has a cooling water discharge pipe 202 and a cooling water inlet pipe 201 at its upper and lower ends, respectively. For example, one tube box 200 has a partition plate 400 arranged along the axial direction of the main tube body 100, dividing the interior into a first cavity 203 and a second cavity 204. The other tube box 200 has a third cavity 205. The cooling water discharge pipe 202 connects to the first cavity 203, and the cooling water inlet pipe 201 connects to the second cavity 204. For example, the upper and lower ends of the third cavity 205 are respectively connected to a third vent pipe 206 and a third drain pipe 207.

[0025] like Figure 1 As shown, there are several heat exchange tubes 300, which are arranged axially along the main body 100. The left and right sides of the heat exchange tubes 300 pass through two inner tube plates 102 and are connected to two outer tube plates 101, which in turn connect to two tube boxes 200.

[0026] like Figure 1 As shown, the upper and lower ends of the protective compartment 110 are respectively connected to a first vent pipe 111 and a first drain pipe 112. The first vent pipe 111 is used to discharge non-condensable gases or vapors accumulated in the protective compartment 110 to prevent gas accumulation from affecting the insulation effect or causing pressure fluctuations. The first drain pipe 112 is used to drain corrosive liquids, solid impurities, or cleaning fluids deposited in the protective compartment 110 to prevent impurities from crystallizing and clogging or corroding the tube sheet and the ends of the heat exchange tubes 300, ensuring that the isolation and buffering function of the protective compartment 110 is effective and easy to maintain.

[0027] like Figure 1As shown, furthermore, the condenser compartment 120 is also equipped with anti-impact plates 500, which are spaced apart at the lower end of the inlet pipe 121. The anti-impact plates 500 effectively block and disperse the high-speed corrosive gas flow, preventing the airflow from directly impacting the internal components such as the baffles 600 and heat exchange tubes 300 inside the condenser compartment 120, preventing structural wear and corrosion caused by long-term erosion, extending the service life of internal components, and promoting a more uniform gas distribution throughout the condenser compartment 120, thereby improving heat exchange efficiency.

[0028] like Figures 2-3 As shown, furthermore, the condenser compartment 120 is provided with several baffles 600, which are semi-circular in shape and are evenly and alternately arranged from right to left along both ends of the condenser compartment 120. For example, several tie rods 601 are also provided on the left side of the inner tube plate 102 on the right side of the main tube body 100. A spacer tube 602 is sleeved on each tie rod 601. The tie rods 601 and the spacer tube 602 pass through and fix the baffles 600. The staggered arrangement of the baffles 600 changes the flow path of the shell-side gas, prolongs the residence time, enhances the turbulence effect, and improves the condensation heat exchange efficiency. The combination of tie rods 601 and spacer tubes 602 ensures that all baffles 600 maintain precise relative positions and stable spacing, preventing vibration or displacement due to fluid impact during operation, and guaranteeing the long-term reliability and stability of the condenser.

[0029] like Figure 1 As shown, the upper end of the condenser compartment 120 is further connected to a balance pipe 125. The balance pipe 125 connects the top of the condenser compartment 120 to other pressure balance areas, maintaining the pressure stability and fluid flow continuity within the condenser compartment 120, preventing pressure buildup or vacuum formation from affecting condensation efficiency, and avoiding non-condensable gas volume from causing liquid seal failure or gas resistance, thereby ensuring a smooth and efficient condensation process.

[0030] In operation, this embodiment is as follows: Corrosive gas containing hydrogen sulfide enters the condenser compartment 120 through the inlet pipe 121. After being buffered and diffused by the anti-impact plate 500, it flows to the right in a tortuous path under the guidance of the baffle plate 600. Simultaneously, it undergoes thorough heat exchange with the cooling medium in the heat exchange tubes 300, which enters through the cooling water inlet pipe 201, is distributed to a portion of the heat exchange tubes 300 via the second chamber 204, flows to the third chamber 205, then turns back and flows through another portion of the heat exchange tubes 300 to the first chamber 203, and finally exits through the cooling water outlet pipe 202. The condensable components in the gas... The gas is condensed into liquid, and the condensate is discharged from the outlet pipe 122 after being collected. The uncondensed gas is kept at a stable system pressure through the balance pipe 125. A small amount of fluid or impurities that leak out of the condensation compartment 120 during operation can be trapped in the protection compartment 110 and periodically discharged or purged through the first vent pipe 111 and the first drain pipe 112. At the same time, the third vent pipe 206 and the third drain pipe 207 can also be used to remove non-condensable gases and residual liquids in the tube box 200, thereby ensuring the long-term stable and efficient operation of the condenser.

[0031] In this embodiment, a protective compartment 110 exists between the inner tube sheet 102 and the outer tube sheet 101, isolating corrosive gases containing solid impurities or easily crystallizing media from contact with the tube box 200. This prevents impurities from accumulating between the inner tube sheet 102 and the outer tube sheet 101, causing blockage and corrosion. At the same time, the protective compartment 110 provides an independent buffer and maintenance space, making it easier to clean scale and solid impurities. This significantly reduces maintenance difficulty and downtime, thereby extending the service life of the condenser and improving the long-term operational stability and reliability of the desulfurization tower top condensation system.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A top condenser for a hydrogen sulfide removal tower, characterized in that, include: The main body is horizontally oriented, with two outer tube plates at its left and right ends, and two inner tube plates at its left and right sides inside the main body. The inner tube plates and outer tube plates are spaced apart, and the inner tube plates, outer tube plates, and inner wall of the main body form a protective compartment. The two inner tube plates and the main body form a condensation compartment. An air inlet pipe is connected to the upper left side of the condensation compartment, and a liquid outlet pipe is connected to the lower right side of the condensation compartment. The tube box has two tube boxes, which are respectively connected to the outside of the two outer tube sheets. One of the tube boxes is provided with a cooling water discharge pipe and a cooling water inlet pipe at its upper and lower ends, respectively. The heat exchange tubes are arranged in a plurality of them along the axial direction of the main tube body. The left and right sides of the heat exchange tubes pass through two inner tube sheets and are connected to two outer tube sheets, which in turn connect to the two tube boxes.

2. The desulfurization tower top condenser according to claim 1, characterized in that: The upper and lower ends of the protective compartment are respectively connected to a first vent pipe and a first discharge pipe.

3. The desulfurization tower top condenser according to claim 1, characterized in that: The condenser compartment is also equipped with anti-impact plates, which are spaced apart at the lower end of the air intake pipe.

4. The desulfurization tower top condenser according to claim 1, characterized in that: One of the pipe boxes has a partition plate arranged along the axial direction of the main pipe, which divides the interior into a first cavity and a second cavity. The other pipe box has a third cavity. The cooling water discharge pipe is connected to the first cavity, and the cooling water inlet pipe is connected to the second cavity.

5. The desulfurization tower top condenser according to claim 4, characterized in that: The upper and lower ends of the third cavity are respectively connected to a third venting pipe and a third draining pipe.

6. The desulfurization tower top condenser according to claim 1, characterized in that: The condensing grid chamber is equipped with several baffles, which are semi-circular in shape and are evenly and alternately arranged from right to left along the front and rear ends of the condensing grid chamber.

7. The desulfurization tower top condenser according to claim 1, characterized in that: Several tie rods are also provided on the left side of the inner tube plate located on the right side of the main body. The tie rods are fitted with spacer tubes. The tie rods and spacer tubes pass through several baffles and fix several baffles.

8. The desulfurization tower top condenser according to claim 1, characterized in that: The lower left end of the condenser compartment is connected to a second drain pipe, and the upper right end of the condenser compartment is connected to a second vent pipe.

9. The desulfurization tower top condenser according to claim 1, characterized in that: The upper end of the condenser compartment is also connected to a balance pipe.

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