Vertical double tube pass sulfur condenser

Abstract

The utility model provides a vertical double -tube -pass sulfur condenser, it includes: base, cylinder, heat exchange tube, wherein the cylinder vertical connection is in the base top, the base is divided into double -chamber through the partition, the heat exchange tube is accomodate in the inner chamber of cylinder, and its both ends are intercommunicated with the both sides chamber in the base respectively, the cylinder is equipped with the cooling medium import, steam export respectively with its inner chamber intercommunication, first side chamber of double -chamber is equipped with process gas import, first steam import, first condensate water export, first liquid sulfur export respectively, second side chamber is equipped with process gas export, second steam import, second condensate water export, second liquid sulfur export respectively. By this, through vertical double -tube -pass structure design, reduce the floor area, save the site resources effectively, benefit the compact layout of equipment, optimize the whole technological process.

Description

Technical Field

[0001] This utility model relates to sulfur condenser technology, and more particularly to a vertical two-pass sulfur condenser. Background Technology

[0002] With the rapid development of global industrialization, environmental protection and resource recycling have become a focus of attention for governments and enterprises. Against this backdrop, sulfur condensers, as key equipment in chemical production for handling sulfur-containing gases, can cool high-temperature sulfur vapor and convert it into liquid sulfur, thereby achieving sulfur recovery and utilization. This not only helps reduce environmental pollution but also meets the urgent global demand for sustainable development and green chemistry. Therefore, their performance directly affects production efficiency and the achievement of environmental targets.

[0003] Currently, sulfur condensers are mainly used in process units such as sulfur recovery and sulfuric acid production. Their structure mainly includes a shell, tube bundle, tube sheet, end caps, and related inlet and outlet connections. The shell is generally made of corrosion-resistant metal materials, providing reliable protection for the internal heat exchange components while housing the entire working process. The tube bundle, as the core component for heat exchange, is typically composed of a large number of tightly arranged fine tubes, greatly increasing the heat exchange area and effectively improving heat exchange efficiency. Its working mechanism is primarily heat exchange: high-temperature sulfur-containing gas flows within the tube bundle, and the cooling medium outside the tubes absorbs heat through heat conduction through the tube walls, lowering the sulfur vapor temperature below the dew point, thereby condensing liquid sulfur and collecting it in a collection tank.

[0004] However, most existing sulfur condensers adopt a horizontal single-tube structure, which results in a large footprint and a long shell side, thus affecting the cost and making it inconvenient to arrange the equipment in a compact manner. Utility Model Content

[0005] Therefore, the main objective of this utility model is to provide a vertical double-pass sulfur condenser to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, according to one aspect of the present invention, a vertical double-pass sulfur condenser is provided, comprising: a base, a cylinder, and heat exchange tubes, wherein the cylinder is vertically connected to the top of the base, the base is divided into two chambers by an isolation plate, the heat exchange tubes are housed in the inner cavity of the cylinder, and their two ends are respectively connected to the two side chambers in the base, the cylinder is respectively provided with a cooling medium inlet and a steam outlet communicating with its inner cavity, the first side chamber of the double chamber is respectively provided with a process gas inlet, a first steam inlet, a first condensate outlet, and a first liquid sulfur outlet, and the second side chamber is respectively provided with a process gas outlet, a second steam inlet, a second condensate outlet, and a second liquid sulfur outlet.

[0007] Optionally, heat tracing pipes are provided at the first liquid sulfur outlet and the second liquid sulfur outlet of the dual-chamber base.

[0008] Optionally, a demister is provided near the top of the inner cavity of the cylinder.

[0009] Optionally, the demister is a wire mesh demister, wherein the wire mesh is cross-woven.

[0010] Optionally, a demister is provided at the process gas outlet in the second side chamber.

[0011] Optionally, the demister is provided with a jacket, and the jacket is provided with a third steam inlet and a third condensate outlet.

[0012] Optionally, the demister is a wire mesh demister, wherein the wire mesh is cross-woven.

[0013] Optionally, the heat exchange tube is U-shaped.

[0014] The vertical double-tube sulfur condenser provided by this utility model has the following advantages: Compared with the traditional horizontal single-tube structure, the vertical double-tube structure requires less floor space, effectively saving space resources and facilitating a compact equipment layout, thus optimizing the entire process flow. Furthermore, during cleaning, dirt and impurities are more easily dislodged and discharged under gravity. The relatively independent double-tube structure allows for individual inspection and maintenance of each tube, reducing maintenance difficulty and cost. Simultaneously, the double-tube design ensures that liquid sulfur circulates multiple times within the tubes, increasing the contact time between the fluid and the tube wall, thereby improving heat exchange efficiency, achieving a more efficient temperature gradient, optimizing the heat exchange process, and having a shorter shell side compared to the traditional single-tube design of sulfur condensers, resulting in lower manufacturing costs. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, 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 undue limitation of the present invention. In the drawings:

[0016] Figure 1 This is a half-sectional structural diagram of the vertical double-pass sulfur condenser of this utility model.

[0017] Figure 2 This is a schematic diagram of the wire mesh braiding structure in the vertical double-pass sulfur condenser of this utility model.

[0018] Explanation of reference numerals in the attached figures

[0019] Steam outlet 1, demister 2, cylinder 3, cooling medium inlet 4, demister 5, process gas outlet 6, second liquid sulfur outlet 7, first liquid sulfur outlet 8, process gas inlet 9, heat exchange tube 10, elliptical head 12, base 13, second steam inlet 14, third steam inlet 15, third condensate outlet 16, second condensate outlet 17, first steam inlet 18, first condensate outlet 19, heat tracing tube 20, isolation plate 21, first side chamber 22, second side chamber 23. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0024] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "lay out," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances and in conjunction with existing technology. Furthermore, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. One or more of the components shown in the figures may be necessary or not, and the relative positional relationships between the components shown in the figures can be adjusted according to actual needs.

[0026] To address the issues of existing horizontal single-pass sulfur condenser equipment having a large footprint, long shell side, impacting construction costs, and hindering compact layout among equipment, such as... Figure 1 As shown, this utility model provides a vertical double-pass sulfur condenser, an example of which includes: a base 13, a cylinder 3, and heat exchange tubes 10. Specifically, as... Figure 1 As shown, the cylinder 3 described in this example is arranged vertically, with an elliptical end cap 12 at its top, which is connected to the top of the base 13 to form a closed inner cavity inside the cylinder 3.

[0027] The base 13 is provided with an isolation plate 21 to divide the inner cavity of the base 13 into two chambers. The heat exchange tube 10 is preferably a U-shaped heat exchange tube 10, which is housed in the inner cavity of the cylinder 3. Sufficient gas phase space is provided between the heat exchange tube 10 and the elliptical end cap 12 to improve the heat exchange effect. In addition, the two ends of the heat exchange tube 10 are respectively connected to the two side chambers in the base 13. The cylinder 3 is respectively provided with a cooling medium inlet 4 and a steam outlet 1 communicating with its inner cavity. The first side chamber 22 of the two chambers is respectively provided with a process gas inlet 9, a first steam inlet 18, a first condensate outlet 19, and a first liquid sulfur outlet 8. The second side chamber 23 is respectively provided with a process gas outlet 6, a second steam inlet 14, a second condensate outlet 17, and a second liquid sulfur outlet 7.

[0028] To prevent liquid sulfur from solidifying, steam is introduced into the dual chambers of the base 13, namely the first side chamber 22 and the second side chamber 23, through the first steam inlet 18 and the second steam inlet 14, respectively, to ensure the fluidity of the liquid sulfur and prevent the liquid sulfur from accumulating and solidifying and causing blockage in the chambers.

[0029] When the vertical double-tube sulfur condenser under this structure is working, coolant (such as deoxygenated water) needs to be injected into the cylinder 3 through the cooling medium inlet 4, and the coolant should cover the top of the heat exchange tube 10 so that it can pass through the shell side space and exchange heat with the process gas entering through the process gas inlet 9 of the first side chamber 22 of the base 13 and passing through the tube side space of the heat exchange tube 10.

[0030] The liquid sulfur formed at this time, under the influence of gravity, will flow into the first side chamber 22 and the second side chamber 23 of the base 13 according to their temperature, and will flow out from the first liquid sulfur outlet 8 and the second liquid sulfur outlet 7 respectively. Specifically, the dual chambers of the base 13 are divided into a high-temperature zone (i.e., the first side chamber 22) and a low-temperature zone (i.e., the second side chamber 23). As the temperature of the high-temperature process gas gradually cools down, it can be divided into high-temperature liquid sulfur and low-temperature liquid sulfur according to their temperature. The high-temperature liquid sulfur can enter the sulfur seal through the first liquid sulfur outlet 8 in the high-temperature zone, and the low-temperature liquid sulfur can enter the sulfur seal through the second liquid sulfur outlet 7 in the low-temperature zone. This is beneficial for the collection of liquid sulfur. At the same time, the deoxygenated water in the cylinder 3 will have its temperature increased after heat exchange, and will generate steam, which will flow out from the steam outlet 1, thus completing the entire heat exchange process.

[0031] This configuration allows for a vertical arrangement of the sulfur condenser, saving floor space. During cleaning, dirt and impurities are more easily dislodged and discharged under gravity. Furthermore, the relatively independent dual-pass structure allows for individual inspection and maintenance of each pass, reducing maintenance difficulty and cost. The dual-pass design also ensures that liquid sulfur circulates multiple times within the tubes, increasing the contact time between the fluid and the tube wall, thereby improving heat exchange efficiency. This enables a more efficient temperature gradient and optimizes the heat exchange process. Additionally, because the heat exchange tube 10 is a dual-pass design, the shell side can be shorter than in traditional single-pass sulfur condensers, reducing construction costs.

[0032] In addition, in an optional embodiment, in order to further prevent liquid sulfur from solidifying and blocking the outlet, a steam coil heat tracing pipe 20 can be installed at the first liquid sulfur outlet 8 and the second liquid sulfur outlet 7 outside the double chamber of the base 13, so as to further prevent liquid sulfur from solidifying and blocking the channel into the sulfur seal.

[0033] Furthermore, considering that in practice, if the temperature of the process gas outlet 6 is too low, liquid sulfur will form sulfur mist in the outlet process gas, in order to reduce the entrainment of sulfur mist in the outlet process gas, in this example, a demister 5 is preferably installed at the process gas outlet 6 in the second side chamber 23. This is to cooperate with the installation of a steam coil outside the rear pipe box to prevent the possibility of dew point and liquid sulfur condensation.

[0034] In this example, the demister 5 is preferably a wire mesh demister 5, on which the wire mesh is as follows: Figure 2 As shown, the demister 5 is cross-woven and made of corrosion-resistant material. It is used to capture sulfur mist in sulfur vapor. The separated droplets are collected by the dual chambers and discharged from the liquid sulfur outlet. To prevent sulfur condensation and clogging of the wire mesh, in an optional example, the demister 5 is equipped with a jacket. The jacket has a third steam inlet 15 above it and a third condensate outlet 16 below it for low-pressure steam heating. This heats the wire mesh demister 5 to prevent sulfur condensation and clogging of the wire mesh. At the same time, condensate flows out from the third condensate outlet 16, enters the second side chamber 23, and is discharged together from the second condensate outlet 17.

[0035] Furthermore, to prevent liquid carryover from the heat exchange steam from damaging downstream equipment, in an optional embodiment, a demister 2 is provided near the top of the inner cavity of the cylinder 3, wherein the demister 2 is preferably a wire mesh demister 2, such as... Figure 2 As shown, the wire mesh on it is cross-woven. This design effectively intercepts liquid droplets in the steam, achieving gas-liquid separation, ensuring steam quality, preventing liquid droplets from being carried into the pipeline network, which could cause corrosion and perforation of the heat exchanger, ensuring stable equipment operation, and maintaining the stability of the pipeline system. Furthermore, the separated droplets can continue the heat exchange process, thus improving heat exchange efficiency, achieving resource recycling, avoiding waste, and reducing costs.

[0036] As can be seen from the above examples, the vertical double-tube sulfur condenser provided by this utility model can better achieve uniform fluid distribution, reduce the short-circuiting phenomenon of fluid in the tubes, and improve the utilization efficiency of the entire heat exchange surface. In addition, the vertical double-tube sulfur condenser can also be used in combination with similar or other existing sulfur condensers, reducing equipment space and having compatibility, and the process flow setting can be more flexible.

[0037] In summary, the vertical double-tube sulfur condenser provided by this utility model has the following advantages: The vertical double-tube structure design occupies less space than the traditional horizontal single-tube structure, effectively saving space resources and facilitating a compact equipment layout, thus optimizing the entire process flow. Furthermore, during cleaning, dirt and impurities are more easily dislodged and discharged under gravity. The relatively independent double-tube structure allows for individual inspection and maintenance of each tube, reducing maintenance difficulty and cost. Simultaneously, the double-tube design ensures that liquid sulfur circulates multiple times within the tubes, increasing the contact time between the fluid and the tube wall, thereby improving heat exchange efficiency, achieving a more efficient temperature gradient, optimizing the heat exchange process, and resulting in a shorter shell side compared to the traditional single-tube design of sulfur condensers, leading to lower manufacturing costs.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0039] Furthermore, various different implementation methods of this utility model can be arbitrarily combined, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A vertical double tube pass sulfur condenser characterized in that include: The system comprises a base, a cylindrical body, and heat exchange tubes. The cylindrical body is vertically connected to the top of the base. The base is divided into two chambers by a partition plate. The U-shaped heat exchange tubes are housed within the inner cavity of the cylindrical body. A gas phase space is provided between the heat exchange tubes and the top of the cylindrical body. Both ends of the heat exchange tubes communicate with the two side chambers within the base, respectively. The cylindrical body is provided with a cooling medium inlet and a steam outlet communicating with its inner cavity. Coolant covering the top of the heat exchange tubes is injected into the cylindrical body. The first side chamber of the dual-chamber system is provided with a process gas inlet, a first steam inlet, and a first condensate inlet. The outlet, the first liquid sulfur outlet, and the second side chamber are respectively provided with a process gas outlet, a second steam inlet, a second condensate outlet, and a second liquid sulfur outlet. Heat tracing pipes are provided at the first liquid sulfur outlet and the second liquid sulfur outlet outside the dual chamber of the base, so that the liquid sulfur formed after the process gas enters the first side chamber through the process gas inlet and undergoes heat exchange in the heat exchange tube space is diverted to the first side chamber and the second side chamber under the action of gravity according to the temperature difference, so as to define a high temperature zone and a low temperature zone in the dual chamber of the base, so that the liquid sulfur flows out from the first liquid sulfur outlet and the second liquid sulfur outlet respectively.

2. The vertical double tube pass sulfur condenser according to claim 1, characterized in that, A demister is installed near the top of the inner cavity of the cylinder.

3. The vertical double-pass sulfur condenser according to claim 2, characterized in that, The demister is a wire mesh demister, on which the wire mesh is cross-woven.

4. The vertical double tube pass sulfur condenser according to claim 1, characterized in that, A demister is installed at the process gas outlet in the second side chamber.

5. The vertical double-tube pass sulfur condenser according to claim 4, characterized in that, The demister is equipped with a jacket, and the jacket is provided with a third steam inlet and a third condensate outlet.

6. Vertical double tube pass sulfur condenser according to any of claims 4 or 5, characterized in that, The demister is a wire mesh demister, on which the wire mesh is cross-woven.

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