Collector for sulfur recovery device

Abstract

The utility model provides a catcher for a sulfur recovery device, which comprises a shell structure, the shell structure is provided with a gas inlet pipe, a gas outlet pipe and a liquid sulfur outlet pipe, at least two layers of demisters are arranged in the shell structure, the demisters are positioned between the gas inlet pipe and the gas outlet pipe, a heat tracing pipe is arranged below each layer of demister, and the liquid sulfur outlet pipe is arranged in the shell structure. The heat tracing pipe and the plane where the demister is located are arranged in parallel, the included angle between the plane where the demister is located and the central axis K of the shell structure is recorded as N, and N is 50-90 degrees; according to the catcher for the sulfur recovery device, the gas-liquid separation effect of the catcher can be effectively improved, and the catching efficiency of the catcher on sulfur components can be improved.

Description

Technical Field

[0001] The utility model relates to the field of sulfur recovery devices, in particular to a collector used in sulfur recovery devices. Background Art

[0002] Most existing sulfur recovery devices often use liquid sulfur traps to separate process gas and sulfur components, such as liquid sulfur, sulfur mist, and sulfur vapor, entrained in process gas. However, existing liquid sulfur traps often have poor gas-liquid separation effects, which is not conducive to improving the capture efficiency of sulfur components, and correspondingly, is not conducive to reducing the load of subsequent tail gas treatment units, especially the processing load of sulfur components. Utility Model Content

[0003] In view of this, the utility model aims to propose a collector for a sulfur recovery device to solve the problem that the gas-liquid separation effect of the liquid sulfur collector in the prior art is poor, resulting in low sulfur component capture efficiency.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A collector for a sulfur recovery device comprises a shell structure, wherein an air inlet pipe, an air outlet pipe and a liquid sulfur outlet pipe are arranged on the shell structure, at least two layers of demisters are arranged in the shell structure, the demisters are located between the air inlet pipe and the air outlet pipe, a heating pipe is arranged below each layer of demisters, the heating pipe is arranged parallel to the plane where the demisters are located, and the angle between the plane where the demisters are located and the central axis K of the shell structure is recorded as N, and N is 50° to 90°.

[0006] Furthermore, the air inlet pipe allows the process gas to enter the shell structure in a downward deflection feeding or tangential swirl feeding manner.

[0007] Furthermore, the air inlet pipe extends toward the inside of the shell structure to form a bent pipe, and the bent pipe extends downward in a direction close to the central axis K.

[0008] Furthermore, the center of the outflow port of the bent tube coincides with the central axis K, and the plane where the outflow port is located is perpendicular to the central axis K.

[0009] Furthermore, an arc-shaped flow channel is arranged on the inner wall of the shell structure, and a flow channel cavity is provided in the arc-shaped flow channel. One end of the arc-shaped flow channel is an outflow end, and the other end is a blocking end, and the air inlet pipe is connected with the flow channel cavity.

[0010] Furthermore, the arc-shaped flow channel is arranged concentrically with the shell structure.

[0011] Furthermore, the central angle of the arc-shaped flow channel is recorded as M, and M is 60° to 100°.

[0012] Furthermore, the air inlet pipe is connected to the shell structure along a tangent direction of the shell structure.

[0013] Furthermore, the cylinder body of the shell structure includes a feed cylinder section, an expanded diameter cylinder section, and a separation cylinder section which are sequentially connected from bottom to top, the air inlet pipe is connected to the feed cylinder section, the demister and the heating pipe are both arranged in the separation cylinder section, and in the direction from bottom to top, the horizontal cross-sectional area of ​​the expanded diameter cylinder section gradually increases, and the minimum horizontal cross-sectional area of ​​the separation cylinder section is greater than the maximum horizontal cross-sectional area of ​​the feed cylinder section.

[0014] Furthermore, a jacket is provided on the outer wall of the lower head of the shell structure.

[0015] Compared with the prior art, the collector for sulfur recovery device described in the utility model has the following advantages:

[0016] The utility model discloses a collector for a sulfur recovery device, which can effectively increase the processing area of ​​the demister by arranging at least two layers of horizontally arranged or inclined demisters in the flow direction of the process gas, improve the gas-liquid separation effect of the collector, and help improve the collector's capture efficiency of sulfur components. In particular, after the inclined demister captures the liquid sulfur, the liquid sulfur can flow downward along the demister, avoiding the accumulation of liquid sulfur in the demister, so as to ensure that the demister always has good processing performance.

[0017] At the same time, by arranging heating pipes under each layer of demisters, on the one hand, the demisters are always kept in a temperature range higher than the melting point of sulfur, thereby preventing sulfur from solidifying in the demisters and blocking the demisters, thereby effectively ensuring the processing efficiency of the demisters; on the other hand, the heating pipes provide direct heating inside the shell structure, which is beneficial to improving the heat transfer efficiency and minimizing heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the first structure of a collector for a sulfur recovery device according to an embodiment of the utility model;

[0020] Figure 2 This is a second structural schematic diagram of a collector for a sulfur recovery device according to an embodiment of the utility model;

[0021] Figure 3 For the utility model embodiment Figure 2 Schematic diagram of the cross section along the AA direction;

[0022] Figure 4 For the utility model embodiment Figure 3 Schematic diagram of the cross section along the BB direction;

[0023] Figure 5 This is a third structural schematic diagram of a collector for a sulfur recovery device according to an embodiment of the utility model;

[0024] Figure 6 For the utility model embodiment Figure 5 Schematic diagram of the cross section along CC direction;

[0025] Figure 7 This is a fourth structural schematic diagram of a collector for a sulfur recovery device described in an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1. Shell structure; 101. Feed barrel section; 102. Expanded diameter barrel section; 103. Separation barrel section; 2. Primary demister; 3. Secondary demister; 4. First heating pipe; 5. Second heating pipe; 6. Air inlet pipe; 61. Bend pipe; 62. Outflow port; 63. Tangential inlet; 7. Air outlet pipe; 8. Liquid sulfur outlet pipe; 9. Sewage outlet; 10. Jacket; 11. Support; 12. Arc flow channel; 121. Blocking end; 122. Outflow end; 123. Flow channel cavity. DETAILED DESCRIPTION

[0028] The following will use the terms commonly used by those skilled in the art to convey the essence of their work to other technical personnel in the art to describe the utility model concepts of the present disclosure. However, these utility model concepts can be embodied in many different forms and should not be considered as limited to the embodiments described herein.

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Figure 1 The coordinates in are used as the reference.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0031] In order to solve the problem that the gas-liquid separation effect of the liquid sulfur collector in the prior art is poor, resulting in low sulfur component capture efficiency, this embodiment proposes a collector for a sulfur recovery device, as shown in the attached Figure 1-7As shown, the collector includes a shell structure 1, which is a conventional tank body that is approximately cylindrical, including a cylindrical barrel, an upper head, and a lower head, and has a virtual central axis K. In view of the fact that the shell structure is relatively common in the chemical industry and does not belong to the main technical improvement point of this application, this application will not elaborate on it.

[0032] The shell structure 1 is provided with an air inlet pipe 6, an air outlet pipe 7, and a liquid sulfur outlet pipe 8. At least two layers of demisters are provided in the shell structure 1. The demisters are located between the air inlet pipe 6 and the air outlet pipe 7. A heating pipe is provided below each layer of demisters. The heating pipe is arranged parallel to the plane where the demisters are located. The angle between the plane where the demisters are located and the central axis K of the shell structure 1 is denoted as N, and N is 50° to 90°.

[0033] Therefore, the present application can effectively increase the processing area of ​​the demister by arranging at least two layers of horizontally or obliquely arranged demisters in the flow direction of the process gas, improve the gas-liquid separation effect of the collector, and help improve the capture efficiency of the collector for sulfur components. In particular, after the liquid sulfur is captured by the obliquely arranged demister, the liquid sulfur can flow downward along the demister to avoid the accumulation of liquid sulfur in the demister, so as to ensure that the demister always has good processing performance. At the same time, by arranging a heating pipe under each layer of demister, on the one hand, the demister is always in a temperature range higher than the melting point of sulfur, avoiding sulfur solidification in the demister and blocking the demister, which can effectively ensure the processing efficiency of the demister. On the other hand, the heating pipe provides direct heating inside the shell structure 1, which is conducive to improving the heat transfer efficiency and minimizing the heat loss.

[0034] As the preferred solution of the present application, the demister is a wire mesh demister, and steam or other heating media can be passed into the heating pipe. The present application arranges two layers of demisters and corresponding two heating pipes, which are respectively recorded as a primary demister 2, a secondary demister 3, a first heating pipe 4, and a second heating pipe 5.

[0035] The air inlet pipe 6 allows the process gas to enter the shell structure 1 in a downward deflection feeding or tangential swirl feeding manner. Specifically, the present application proposes the following three air inlet structure forms related to the air inlet pipe 6:

[0036] Form 1: As attached Figure 1As shown, the air inlet pipe 6 extends toward the inside of the shell structure 1 to form a bent pipe 61, and the bent pipe 61 extends downward in a direction close to the central axis K; preferably, the center of the flow outlet 62 of the bent pipe 61 coincides with the central axis K, and the plane where the flow outlet 62 is located is perpendicular to the central axis K. Thus, the process gas enters the shell structure 1, first flows along the bent pipe 61 toward the central axis K, and deflects downward at the same time, and then flows downward from the flow outlet 62, and then performs a secondary deflection from "the center to the surroundings, from downward to upward", which can not only improve the distribution uniformity of the process gas in the shell structure 1, but also reduce the flow rate of the process gas to a certain extent, so that the demister can provide a better capture effect on the liquid sulfur in the process gas.

[0037] Form 2, as attached Figure 2-4 As shown, an arcuate flow channel 12 is arranged on the inner wall of the shell structure 1, and a flow channel cavity 123 is arranged in the arcuate flow channel 12, and the air inlet pipe 6 is connected with the flow channel cavity 123, and one end of the arcuate flow channel 12 is an outflow end 122, and the other end is a blocking end 121, so that the flow channel cavity 123 forms a single-side opening. After the process gas flows into the arcuate flow channel 12 from the air inlet pipe 6, it flows along the arc of the arcuate flow channel 12 to the inside of the shell structure 1, so that the process gas can form a vortex in the collector, and by utilizing the density difference between the liquid sulfur droplets and the process gas, the gas phase vortex rises and the liquid phase descends, which can effectively improve the gas-liquid separation effect and the capture efficiency of the collector for the sulfur component.

[0038] Preferably, since the arc-shaped flow channel 12 is in an arc shape and the cross-section of the shell structure 1 is circular, the arc-shaped flow channel 12 is concentrically arranged with the shell structure 1, so that after the process gas flows out of the flow channel cavity 123, it can flow along the inner wall of the shell structure 1 to perform tangential swirl flow, thereby improving the gas-liquid separation effect during the swirl flow process. Figure 3 As shown, the central angle of the arc flow channel 12 is recorded as M, and M is 60° to 100°. Therefore, while the arc flow channel 12 guides the process gas to perform tangential swirl, it can minimize the obstruction of the arc flow channel 12 to the process gas flow velocity, so that the process gas can perform tangential swirl at a certain flow rate, ensure the shear force of the gas flow during the swirl process, and ensure the effect of gas-liquid separation.

[0039] Form 3, as attached Figure 5-6 As shown, the air inlet pipe 6 is connected to the shell structure 1 along the tangential direction of the shell structure 1, so that the process gas flows into the shell structure 1 along the air inlet pipe 6 through the tangential inlet 63 of the air inlet pipe 6 in the form of a tangential swirl, so that the process gas can form a swirl in the collector, and by utilizing the density difference between the liquid sulfur droplets and the process gas, the gas phase swirl rises and the liquid phase descends, which can effectively improve the gas-liquid separation effect and improve the collector's capture efficiency of the sulfur component.

[0040] Preferably, along the flow direction of the process gas, the opening size of the air inlet pipe 6 gradually decreases, so that as the process gas flows along the air inlet pipe 6, its flow velocity gradually increases, so that the process gas can perform tangential swirl at a certain flow velocity, thereby ensuring the shear force of the air flow during the swirl process and ensuring the gas-liquid separation effect.

[0041] In addition, the present application is not limited to forms 1 to 3, and a conventional air intake form can also be used, where the air intake pipe 6 is directly connected to the shell structure 1, which is recorded as form 4. This form 4 can achieve the air intake of the process gas and will not be described in detail. At the same time, the various forms related to the air intake structure of the present application can be arbitrarily combined with other structures of the collector, and are not limited to a fixed structural form or a fixed combination recorded in the present application.

[0042] In order to further improve the collection efficiency of the collector, the barrel of the shell structure 1 includes a feed barrel section 101, an expanded barrel section 102, and a separation barrel section 103 connected in sequence from bottom to top, the air inlet pipe 6 is connected to the feed barrel section 101, and the demister and the heat tracing pipe are both arranged in the separation barrel section 103. In the direction from bottom to top, the horizontal cross-sectional area of ​​the expanded barrel section 102 gradually increases, and accordingly, the minimum horizontal cross-sectional area of ​​the separation barrel section 103 is greater than the maximum horizontal cross-sectional area of ​​the feed barrel section 101. Therefore, after the process gas enters the shell structure 1, in the process of flowing upward, as the flow space increases, the flow rate of the process gas gradually decreases, so that the demister can provide a better collection effect for the liquid sulfur in the process gas. Preferably, the feed barrel section 101 and the separation barrel section 103 are both cylindrical barrel sections, and the diameter change transition between the two is performed through the expanded barrel section 102.

[0043] Since the present application sets a heat tracing pipe inside the collector, the outer wall of the lower head of the shell structure 1 only needs to be provided with a jacket 10. Compared with the prior art, the present application does not need to set a jacket structure on most of the outer walls of the shell structure 1, and only needs to set a jacket 10 at the lower head, so that when the liquid sulfur captured by the demister falls to the bottom of the shell structure 1, the temperature at the bottom of the shell structure 1 is always above the melting point of sulfur through the heating of the jacket 10, and the flow and discharge of the liquid sulfur are ensured. At the same time, the setting area of ​​the jacket structure is also reduced, which is conducive to reducing heat loss, reducing heat supply demand, and can also effectively reduce the equipment cost of the jacket structure.

[0044] In addition, the gas outlet pipe 7 is arranged at the upper head of the shell structure 1, so that the process gas after being treated by the defoamer can flow out of the collector upward from the gas outlet pipe 7. The liquid sulfur outlet pipe 8 is connected to the lower head of the shell structure 1, so that the liquid sulfur captured by the collector is collected on the bottom wall of the shell structure 1 and flows out of the collector through the liquid sulfur outlet pipe 8. The liquid sulfur outlet pipe 8 is provided with a sewage outlet 9 for regularly discharging sewage from the collector.

[0045] In the present invention, any collector may include the relevant structures and assembly relationships provided in this embodiment. On this basis, the collector also includes conventional components such as a support 11, such as the shell structure 1 sitting on the support 11 for fixing and support. Since these conventional components are prior art, they will not be described in detail here.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A collector for a sulfur recovery device, characterized in that: The collector comprises a shell structure (1), the shell structure (1) is provided with an air inlet pipe (6), an air outlet pipe (7), and a liquid sulfur outlet pipe (8), at least two layers of demisters are provided in the shell structure (1), the demisters are located between the air inlet pipe (6) and the air outlet pipe (7), a heating pipe is provided below each layer of demisters, the heating pipe is arranged parallel to the plane where the demisters are located, and the angle between the plane where the demisters are located and the central axis K of the shell structure (1) is denoted as N, and N is 50° to 90°; The cylinder body of the shell structure (1) comprises a feed cylinder section (101), an expanded diameter cylinder section (102), and a separation cylinder section (103) which are sequentially connected from bottom to top; the air inlet pipe (6) is connected to the feed cylinder section (101); the demister and the heat tracing pipe are both arranged in the separation cylinder section (103); and in a direction from bottom to top, the horizontal cross-sectional area of ​​the expanded diameter cylinder section (102) gradually increases, and the minimum horizontal cross-sectional area of ​​the separation cylinder section (103) is greater than the maximum horizontal cross-sectional area of ​​the feed cylinder section (101).

2. A collector for a sulfur recovery device according to claim 1, characterized in that: The air inlet pipe (6) allows the process gas to enter the shell structure (1) in a downward deflection feeding or tangential swirl feeding manner.

3. The collector for a sulfur recovery device according to claim 2, characterized in that: The air inlet pipe (6) extends toward the inside of the shell structure (1) to form a bent pipe (61), and the bent pipe (61) extends downward in a direction close to the central axis K.

4. The collector for a sulfur recovery device according to claim 3, characterized in that: The center of the flow outlet (62) of the bent tube (61) coincides with the central axis K, and the plane where the flow outlet (62) is located is perpendicular to the central axis K.

5. The collector for a sulfur recovery device according to claim 2, characterized in that: An arc-shaped flow channel (12) is provided on the inner wall of the shell structure (1), wherein a flow channel cavity (123) is provided in the arc-shaped flow channel (12), one end of the arc-shaped flow channel (12) is an outflow end (122), and the other end is a blocking end (121), and the air inlet pipe (6) is in communication with the flow channel cavity (123).

6. The collector for a sulfur recovery device according to claim 5, characterized in that: The arc-shaped flow channel (12) is arranged concentrically with the shell structure (1).

7. The collector for a sulfur recovery device according to claim 6, characterized in that: The center angle of the arc-shaped flow channel (12) is denoted as M, and M is 60° to 100°.

8. The collector for a sulfur recovery device according to claim 2, characterized in that: The air inlet pipe (6) is connected to the shell structure (1) along a tangential direction of the shell structure (1).

9. The collector for a sulfur recovery device according to claim 1, characterized in that: A jacket (10) is provided on the outer wall of the lower head of the shell structure (1).

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