Novel sulfur condenser

Abstract

The utility model provides a novel sulfur condenser which comprises a reactor body, a front tube box and a rear tube box, the front tube box and the rear tube box are located at the two ends of the reactor body, the reactor body separates the front tube box from the rear tube box through a front tube plate and a rear tube plate, a heat exchange tube and an air preheating tube are arranged in the reactor body, and the heat exchange tube is located at the lower end of the air preheating tube. Air circulates in the air preheating pipe, process gas circulates in the heat exchange pipe, and the two ends of the heat exchange pipe and the two ends of the air preheating pipe are connected with the front pipe plate and the rear pipe plate respectively. The air preheating pipe is arranged above the heat exchange pipe, air in the air preheating pipe can be preheated through low-pressure steam generated when gas in the heat exchange pipe and a cooling medium are condensed, an air preheater does not need to be independently arranged, the occupied area of the whole structure is reduced, and structural pipeline arrangement is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfur recovery, in particular to a novel sulfur condenser. Background Art

[0002] The sulfur condenser is one of the important equipment in the sulfur recovery device. It plays the role of cooling the process gas and condensing it to separate the liquid sulfur during the production process. Patent CN216482352U describes a sulfur condenser with a conventional structure. The sulfur condenser with this structure is provided with two front and rear pipe boxes. The heat exchange tubes are respectively connected to the front and rear pipelines through tube sheets, and the rear pipe box is provided with a liquid sulfur outlet and a process gas outlet. According to the needs of the process device, the front and rear pipe boxes of the sulfur condenser can be divided into two or three cavities, and two or three liquid sulfur outlets are provided. In the prior art, an air preheater is generally provided separately, and steam is used to heat the air, and a structure combined with the sulfur condenser is not adopted. The provision of the air preheater not only makes the pipeline layout of the entire device more dispersed, increases the amount of on-site construction, but also increases the entire floor area, which reduces the effective utilization area of ​​the entire device. Utility Model Content

[0003] In view of this, the utility model aims to propose a new type of sulfur condenser to solve the problem that in the prior art, an air preheater is separately set up to heat the air by steam, and the structure combined with the sulfur condenser is not adopted, but the setting of the air preheater not only makes the pipeline layout of the whole device more dispersed, increases the amount of on-site construction, but also increases the entire floor area, reducing the effective utilization area of ​​the whole device.

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

[0005] A novel sulfur condenser comprises a reactor body, and a front tube box and a rear tube box located at both ends of the reactor body. The reactor body is separated from the front tube box by a front tube plate and a rear tube plate. Heat exchange tubes and air preheating tubes are arranged in the reactor body. The heat exchange tubes are located at the lower end of the air preheating tubes. Air flows in the air preheating tubes. Process gas flows in the heat exchange tubes. Both ends of the heat exchange tubes and the air preheating tubes are connected to the front tube plate and the rear tube plate respectively.

[0006] This arrangement, by arranging an air preheating tube above the heat exchange tube, can preheat the air in the air preheating tube through the low-pressure steam generated when the gas in the heat exchange tube condenses with the cooling medium. There is no need to arrange a separate air preheater, which reduces the footprint of the entire structure and optimizes the structural pipeline layout.

[0007] Furthermore, the front tube plate divides the front tube box into three independent cavity structures, and the rear tube plate divides the rear tube box into three independent cavity structures.

[0008] This setting can achieve that the process gas heats the air in the air preheating pipe when passing through the condenser.

[0009] Furthermore, the front pipe box includes a first cavity, a second cavity, and a third cavity, the rear pipe box includes a fourth cavity, a fifth cavity, and a sixth cavity, the first cavity is connected to the fourth cavity through an air preheating pipe, the second cavity is connected to the fifth cavity through a heat exchange pipe, and the third cavity is connected to the sixth cavity through a heat exchange pipe.

[0010] This arrangement enables the steam generated by the process gas in the condenser to directly heat the air in the air preheating pipe.

[0011] Furthermore, the first cavity is located at the upper ends of the second cavity and the third cavity, and the second cavity and the third cavity are respectively located on both sides of the lower end of the first cavity.

[0012] This setting facilitates the circulation of process gas and air.

[0013] Further, the first cavity is connected to an air preheating outlet, the second cavity is connected to a primary process gas inlet, the third cavity is connected to a secondary process gas inlet, the fifth cavity is connected to a primary process gas outlet, and the sixth cavity is connected to a secondary process gas outlet.

[0014] Furthermore, the rear pipe box is provided with a second inlet hole, the second inlet hole is located between the air preheating inlet and the primary process gas outlet, and the second inlet hole is located at the top of the reactor body.

[0015] Furthermore, a demister is provided in the fifth cavity, and the demister separates the fifth cavity into a first gas outlet cavity located at the upper part and a first liquid sulfur cavity located at the lower part, the first gas outlet cavity is connected to the primary process gas outlet, and the first liquid flow cavity is connected to the first liquid sulfur outlet.

[0016] Furthermore, a demister is provided in the sixth cavity, and the demister separates the sixth cavity into a second gas outlet cavity located at the upper part and a second liquid sulfur cavity located at the lower part, the second gas outlet cavity is connected to the secondary process gas outlet, and the second liquid flow cavity is connected to the second liquid sulfur outlet.

[0017] Furthermore, the reactor body also includes a steam ejector suction port and a steam ejector discharge port, wherein the steam ejector suction port is close to the rear tube sheet, and the steam ejector discharge port is close to the front tube sheet, and the steam ejector suction port and the steam ejector discharge port are located at the top of the reactor body.

[0018] Furthermore, the reactor body further comprises a steam outlet and a first inlet hole, and the steam outlet and the first inlet hole are located at the top of the reactor body.

[0019] Compared with the prior art, the novel sulfur condenser described in the utility model has the following advantages:

[0020] 1) The utility model arranges an air preheating tube above the heat exchange tube, so that the air in the air preheating tube can be preheated by the low-pressure steam generated when the gas in the heat exchange tube condenses with the cooling medium, without the need to arrange a separate air preheater, thereby reducing the floor space of the entire structure and optimizing the structural pipeline layout;

[0021] 2) The first cavity of the utility model is connected to the fourth cavity through an air preheating tube, the second cavity is connected to the fifth cavity through a heat exchange tube, and the third cavity is connected to the sixth cavity through a heat exchange tube, so that the process gas can heat the air in the air preheating tube when condensing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a novel sulfur condenser of the utility model;

[0023] Figure 2 for Figure 1 Cross-sectional view in the AA direction;

[0024] Figure 3 This is a partial structural diagram of a new type of sulfur condenser of the utility model. Figure 1 ;

[0025] Figure 4 This is a partial structural diagram of a new type of sulfur condenser of the utility model. Figure 2 .

[0026] Description of reference numerals:

[0027] 1-reactor body, 11-steam ejector suction port, 12-steam ejector discharge port, 13-air preheating pipe, 14-continuous sewage outlet, 15-boiler water inlet, 16-heat exchange tube, 17-steam outlet, 18-first inlet, 19-periodic sewage outlet, 2-front tube box, 21-first cavity, 211-air preheating outlet, 22-second cavity, 221-primary process gas inlet, 23-third cavity, 231-secondary process gas inlet, 3-rear tube box, 31-fourth cavity, 311-air preheating inlet, 32-fifth cavity, 321-primary process gas outlet, 33-sixth cavity, 331-secondary process gas outlet, 34-demister, 35-second inlet, 36-first liquid sulfur outlet, 37-second liquid sulfur outlet, 4-front tube sheet, 41-first plate, 42-second plate, 5-rear tube sheet. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the accompanying drawings. In addition, the directions involved in the following specific embodiments are briefly described: the directions or positional relationships indicated by "up", "down", "left", "right" and the like mentioned in the embodiments refer to the directions or positional relationships shown in the accompanying drawings.

[0029] like Figure 1-4 As shown, the utility model relates to a novel sulfur condenser, which adopts a combined structure of a primary condenser and a secondary condenser, and specifically comprises a reactor body 1 and a front tube box 2 and a rear tube box 3 located at both ends of the reactor body 1, the reactor body 1 and the front tube box 2 and the rear tube box 3 are separated by a front tube sheet 4 and a rear tube sheet 5, the reactor body 1 is provided with a heat exchange tube 16 and an air preheating tube 13, the heat exchange tube 16 is located at the lower end of the air preheating tube 13, air flows in the air preheating tube 13, process gas flows in the heat exchange tube 16, and both ends of the heat exchange tube 16 and the air preheating tube 13 are connected to the front tube sheet 4 and the rear tube sheet 5 respectively.

[0030] Preferably, the front tube plate divides the front tube box into three independent cavity structures, and the rear tube plate divides the rear tube box into three independent cavity structures.

[0031] Specifically, the front pipe box 2 includes a first cavity 21, a second cavity 22, and a third cavity 23, and the rear pipe box 3 includes a fourth cavity 31, a fifth cavity 32, and a sixth cavity 33. The first cavity 21 is connected to the fourth cavity 31 through an air preheating pipe 13, the second cavity 22 is connected to the fifth cavity 32 through a heat exchange pipe, and the third cavity 23 is connected to the sixth cavity 33 through a heat exchange pipe.

[0032] Preferably, the first cavity 21 is located at the upper ends of the second cavity 22 and the third cavity 23 , and the second cavity 22 and the third cavity 23 are located at both sides of the lower end of the first cavity 21 , respectively.

[0033] Specifically, the front pipe box 2 is provided with an air preheating outlet 211, a primary process gas inlet 221, and a secondary process gas inlet 231, and the rear pipe box 3 is provided with an air preheater inlet 311, a primary process gas outlet 321, a secondary process gas outlet 331, a second inlet hole 35, a first liquid sulfur outlet 36, and a second liquid sulfur outlet 37.

[0034] Specifically, the first cavity 21 is connected to an air preheating outlet 211, the second cavity 22 is connected to a primary process gas inlet 221, the third cavity 23 is connected to a secondary process gas inlet 231, the fourth cavity 31 is connected to an air preheating outlet 311, the fifth cavity 32 is connected to a primary process gas outlet 321, and the sixth cavity 33 is connected to a secondary process gas outlet 331.

[0035] Preferably, the second cavity 22 and the third cavity 23 are symmetrical structures.

[0036] Preferably, the primary process gas inlet and the secondary process gas inlet are symmetrically arranged on the front pipe box.

[0037] Preferably, the front tube plate is fixed in the front tube box by welding.

[0038] Preferably, the heat exchange tube connected in the second cavity is at the same height as the heat exchange tube connected in the third cavity, and the uppermost heat exchange tube in the second cavity / third cavity is at a certain distance from the lowermost air preheating tube in the first cavity. Specifically, the air preheating tube used to connect the first cavity and the fourth cavity, the heat exchange tube used to connect the second cavity and the fifth cavity, and the heat exchange tube used to connect the third cavity and the sixth cavity respectively have a certain installation space on the top. This arrangement can enable the steam generated by the first-stage condenser and the second-stage condenser to heat the air in the air preheating tube from 30-50°C to 130-150°C.

[0039] Specifically, the reactor body 1 also includes a steam ejector suction port 11, a steam ejector discharge port 12, a continuous sewage discharge port 14, a boiler water inlet 15, a steam outlet 17, a first inlet hole 18, and a periodic sewage discharge port 19; the steam ejector suction port 11 is close to the front tube sheet 4, and the steam ejector discharge port 12 is close to the rear tube sheet 5.

[0040] Preferably, the steam ejector suction port 11, the steam ejector discharge port 12, the steam outlet 17, and the first inlet hole 18 are located at the top of the reactor body 1; the periodic sewage outlet 19 is located at the bottom of the reactor body and close to the rear tube sheet; the boiler water inlet 15 is close to the heat exchange tube 16, the steam outlet 17 is close to the front tube sheet and located at the right end of the steam ejector suction port, and the first inlet hole is close to the steam outlet and located at the right end of the steam outlet.

[0041] Specifically, the rear pipe box 3 is provided with a second inlet hole 35 , the second inlet hole 35 is located between the air preheating inlet 311 and the primary process gas outlet 321 , and the second inlet hole 35 is located at the top of the reactor body 1 .

[0042] Preferably, the fifth cavity 32 extends to the right to form a first liquid sulfur separation chamber, and the first liquid sulfur separation chamber is divided by a demister 34 to form a first gas outlet chamber located at the top and a first liquid sulfur chamber located at the bottom, the first gas outlet chamber is connected to the primary process gas outlet, and the first liquid flow chamber is connected to the first liquid sulfur outlet 36. The demister can reduce liquid sulfur droplets in the gas.

[0043] Preferably, the sixth cavity 33 extends to the right to form a second liquid sulfur separation chamber, and the second liquid sulfur separation chamber is divided by a demister to form a second gas outlet chamber located at the top and a second liquid sulfur chamber located at the bottom, the second gas outlet chamber is connected to the secondary process gas outlet, and the second liquid flow chamber is connected to the second liquid sulfur outlet 37. The demister can reduce liquid sulfur droplets in the gas.

[0044] Preferably, the front tube plate 4 includes at least a first plate 41 and a second plate 42 , wherein the first plate 41 and the second plate 42 form a T-shaped structure, and the first plate 41 is located at the upper end of the second plate 42 . This arrangement enables the front tube box to form a three-cavity structure.

[0045] Preferably, a thermometer is also provided on the reactor body 1 .

[0046] In this embodiment, air enters through the air preheating inlet of the fourth cavity in the rear tube box, then enters the reactor body through the air preheating pipe for heating, and is discharged through the air preheating outlet of the first cavity in the front tube box. The primary process gas enters the second cavity on the lower side of the front tube box through the primary process gas inlet, then enters the reactor body through the heat exchange tube for condensation, and then is discharged through the primary process gas outlet of the fifth cavity; the secondary process gas enters the third cavity on the lower side of the front tube box through the secondary process gas inlet, enters the reactor body through the heat exchange tube for condensation, then enters the sixth cavity, and is discharged from the secondary process gas outlet; the process gas is cooled and condensed in the primary condenser and the secondary condenser in turn to produce liquid sulfur, and the heat released during the process gas cooling process heats the boiler water in the condenser shell, and produces steam as a byproduct. The generated steam heats the air in the gas phase space of the condenser.

[0047] Through the above process, the primary process gas is cooled from 320-350℃ to 160-170℃ in the condenser and liquid sulfur is condensed. The secondary process gas is cooled from 290-300℃ to 160-170℃ in the condenser and liquid sulfur is condensed. The condenser shell can produce 0.4-0.5MPaG steam and the air temperature can be heated from 30-50℃ to 130-150℃.

[0048] This arrangement can directly utilize the low-pressure steam produced as a by-product of the condenser to preheat the air, without the need to set up a separate air preheater, thereby reducing the footprint of the entire structure and optimizing the piping layout of the structure. In addition, the preheated air enters the combustion furnace, which can increase the combustion furnace temperature and is beneficial to improving the sulfur recovery rate.

[0049] The condenser structure is not limited to the combination of a two-stage sulfur condenser and an air preheater, but can also be a combination of a three-stage sulfur condenser and an air preheater.

[0050] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. A novel sulfur condenser, comprising a reactor body (1), and a front tube box (2) and a rear tube box (3) located at both ends of the reactor body (1), wherein the reactor body (1) is separated from the front tube box (2) and the rear tube box (3) by a front tube sheet (4) and a rear tube sheet (5), characterized in that: An air preheating tube (13) and a heat exchange tube (16) are arranged in the reactor body (1); the air preheating tube (13) is located at the upper end of the heat exchange tube (16); air flows in the air preheating tube (13); process gas flows in the heat exchange tube (16); and both ends of the heat exchange tube (16) and the air preheating tube (13) are connected to the front tube sheet (4) and the rear tube sheet (5) respectively.

2. A novel sulfur condenser according to claim 1, characterized in that: The front tube plate (4) divides the front tube box (2) into three independent cavity structures, and the rear tube plate (5) divides the rear tube box (3) into three independent cavity structures.

3. A novel sulfur condenser according to claim 1, characterized in that: The front pipe box (2) comprises a first cavity (21), a second cavity (22), and a third cavity (23); the rear pipe box (3) comprises a fourth cavity (31), a fifth cavity (32), and a sixth cavity (33); the first cavity (21) is connected to the fourth cavity (31) via an air preheating tube (13); the second cavity (22) is connected to the fifth cavity (32) via a heat exchange tube (16); and the third cavity (23) is connected to the sixth cavity (33) via a heat exchange tube (16).

4. A novel sulfur condenser according to claim 3, characterized in that: The first cavity (21) is located at the upper ends of the second cavity (22) and the third cavity (23), and the second cavity (22) and the third cavity (23) are respectively located on both sides of the lower end of the first cavity (21).

5. A novel sulfur condenser according to claim 3, characterized in that: The first cavity (21) is connected to an air preheating outlet (211), the second cavity (22) is connected to a primary process gas inlet (221), the third cavity (23) is connected to a secondary process gas inlet (231), the fourth cavity (31) is connected to an air preheating inlet (311), the fifth cavity (32) is connected to a primary process gas outlet (321), and the sixth cavity (33) is connected to a secondary process gas outlet (331).

6. A novel sulfur condenser according to claim 5, characterized in that: The rear pipe box (3) is provided with a second inlet hole (35), the second inlet hole (35) is located between the air preheating inlet (311) and the first-stage process gas outlet (321), and the second inlet hole (35) is located at the top of the reactor body (1).

7. A novel sulfur condenser according to claim 5, characterized in that: The fifth cavity (32) is provided with a demister (34), and the demister (34) separates the fifth cavity (32) into a first gas outlet cavity located at the upper part and a first liquid sulfur cavity located at the lower part, wherein the first gas outlet cavity is connected to the primary process gas outlet (321), and the first liquid flow cavity is connected to the first liquid sulfur outlet (36).

8. A novel sulfur condenser according to claim 5, characterized in that: The sixth cavity (33) is provided with a demister (34), and the demister (34) separates the sixth cavity (33) into a second gas outlet cavity located at the upper part and a second liquid sulfur cavity located at the lower part, wherein the second gas outlet cavity is connected to the secondary process gas outlet (331), and the second liquid flow cavity is connected to the second liquid sulfur outlet (37).

9. A novel sulfur condenser according to claim 1, characterized in that: The reactor body (1) further comprises a steam ejector suction port (11) and a steam ejector discharge port (12); the steam ejector suction port (11) is close to the rear tube sheet (5), the steam ejector discharge port (12) is close to the front tube sheet (4), and the steam ejector suction port (11) and the steam ejector discharge port (12) are located at the top of the reactor body (1).

10. A novel sulfur condenser according to claim 1, characterized in that: The reactor body (1) further comprises a steam outlet (17) and a first inlet hole (18), wherein the steam outlet (17) and the first inlet hole (18) are located at the top of the reactor body (1).

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