Sulfur collecting device and synthetic ammonia sulfur tail gas treatment system

Abstract

The utility model provides a sulfur collecting device and a synthetic ammonia sulfur tail gas treatment system, the sulfur collecting device comprises a shell and a filtering device, the filtering device is mounted in the shell through an upper partition plate and a lower partition plate, and the bottom of the filtering device is at least higher than the bottom end of a gas inlet; the upper partition plate, the filtering device and the lower partition plate divide the shell into an upper area and a lower area, the air inlet is located in the lower area, and the air outlet is located in the upper area. The sulfur collecting device is composed of a shell and a filtering device. After H2S incineration tail gas enters the sulfur collecting device, when the sulfur tail gas passes through the filtering device, sulfur liquid particles and water mist are blocked on the filtering device, and liquid flow formed after a large number of sulfur liquid particles and water mist blocked on the filtering device fall to the bottom of the shell under the action of gravity. And sulfur recovery is completed through the recovery outlet, so that the problem of unstable boiler operation caused by corrosion of the sulfur generated after H2S incineration to boiler equipment is solved.

Description

Technical Field

[0001] The present application relates to a sulfur tail gas treatment system in synthetic ammonia, and more specifically, to a sulfur collection device and a sulfur tail gas treatment system in synthetic ammonia. Background Art

[0002] Ammonia is an important chemical raw material. In order to produce ammonia, various fuels are generally used as raw materials. First, ammonia containing H 2 Then, various purification methods are used to remove dust, H 2 S, organic sulfur, CO, CO 2 Harmful impurities such as nitrogen and hydrogen can be removed to obtain a clean 1:3 nitrogen-hydrogen mixture that meets the requirements of ammonia synthesis. Finally, the nitrogen-hydrogen mixture is compressed to above 15Mpa and ammonia is synthesized with the help of a catalyst.

[0003] In removing H from the gas 2 S is generally desulfurized by incineration (H 2 S), the tail gas produced after incineration is led to the waste heat utilization boiler, but H 2 S will produce sulfur after burning, H 2 The sulfur produced after the incineration of S will remain in the waste heat boiler. The sulfur element will corrode the boiler equipment, causing unstable boiler operation and affecting the normal operation of the desulfurization system. Utility Model Content

[0004] The purpose of the utility model is to solve the problem of H 2 The sulfur produced after the incineration of S causes corrosion to the boiler equipment, resulting in unstable boiler operation and affecting the normal operation of the desulfurization system, so as to realize the collection of sulfur tail gas.

[0005] In order to achieve the above objectives, the utility model first provides a sulfur collection device, wherein the sulfur collection device is arranged at H 2 After the S gas incinerator, the sulfur collection device is connected to the H 2 The sulfur collecting device is connected to an S gas incinerator, and the sulfur collecting device comprises: a shell and a filter device, an air inlet is arranged in the middle of the shell, a recovery outlet is arranged at the bottom of the shell, and an exhaust port is arranged at the top of the shell. The filter device is installed in the shell through an upper partition and a lower partition, and the bottom of the filter device is at least higher than the bottom end of the air inlet; the upper partition, the filter device, and the lower partition divide the shell into upper and lower areas, so that the air inlet is located in the lower area and the exhaust port is located in the upper area.

[0006] Due to H 2 After S is burned, H 2O and S, and because the incineration temperature is high, the sulfur obtained after incineration exists in the form of mist (i.e. liquid particles). Therefore, when H 2 After the sulfur incineration tail gas enters the air inlet of the sulfur collection device, the sulfur tail gas will block the sulfur liquid particles and water mist on the filter device when passing through the filter device. A large number of sulfur liquid particles and water mist blocked on the filter device will gather to form a liquid flow. The liquid flow will fall to the bottom of the shell under the action of gravity, and the sulfur will be recovered through the recovery outlet at the bottom of the shell, thereby solving the H 2 The sulfur produced after the incineration of S causes corrosion to the boiler equipment, resulting in unstable boiler operation and affecting the normal operation of the desulfurization system.

[0007] As an improvement of the housing of the utility model, the housing comprises an upper housing and a lower housing, which is convenient for inspecting and replacing the filter device inside the housing.

[0008] As a further improvement of the above-mentioned shell of the utility model, the upper shell and the lower shell are connected by a flange.

[0009] As an improvement of the above-mentioned sulfur collection device of the utility model, the area enclosed by the upper shell, the upper baffle, the filtering device, the lower baffle, and the lower shell is the upper area, and the area enclosed by the lower shell, the upper baffle, the filtering device, and the lower baffle is the lower area. The gas in the lower area mainly includes water vapor, water mist, and liquid sulfur particles. After the gas in the lower area passes through the filtering device to filter the water mist and liquid sulfur particles, the remaining gas in the upper area is mainly water vapor.

[0010] As an improvement of the above shell, a heat-insulating interlayer is provided on the shell, and a heat-insulating medium inlet and a heat-insulating medium outlet are provided on the heat-insulating interlayer. Since the liquefaction temperature of sulfur is about 110°C, in order to ensure that the synthetic ammonia sulfur tail gas is liquid in the shell, heat-insulating measures can be taken for the shell.

[0011] As an improvement to the above-mentioned shell insulation interlayer setting method, a first medium inlet and a first medium outlet are set on the first insulation interlayer located in the lower shell, and the first medium inlet is set at the recovery outlet; a second medium inlet and a second medium outlet are set on the second insulation interlayer located in the upper shell. Since the shell is divided into an upper shell and a lower shell, insulation interlayers are respectively set on the upper shell and the lower shell.

[0012] As an improvement of the above-mentioned filter device of the utility model, the filter device includes a filter plate and a filter plate frame.

[0013] As an improvement of the above filter plate, the filter plate is composed of a plurality of metal wire meshes.

[0014] Furthermore, a mounting groove for the filter device is provided on the lower partition plate.

[0015] Furthermore, a filter plate frame is arranged outside the filter plate, the bottom of the filter plate frame is arranged in the mounting groove, and the top of the filter plate frame is connected to the upper partition plate.

[0016] Based on the above-mentioned sulfur collecting device, the utility model also provides a synthetic ammonia sulfur tail gas treatment system, the synthetic ammonia sulfur tail gas treatment system comprises: an incinerator, a waste heat boiler arranged behind the incinerator through a pipeline, the sulfur collecting device is also arranged in parallel on the pipeline, and a plurality of valves are arranged on the pipeline.

[0017] The beneficial effects of this application are:

[0018] The sulfur collection device of the present application is composed of a shell and a filtering device. When H composed of water vapor, water mist, and sulfur liquid particles 2 After the sulfur incineration tail gas enters the air inlet of the sulfur collection device, the sulfur tail gas will block the sulfur liquid particles and water mist on the filter device when passing through the filter device. A large number of sulfur liquid particles and water mist blocked on the filter device will gather to form a liquid flow. The liquid flow will fall to the bottom of the shell under the action of gravity, and the sulfur will be recovered through the recovery outlet at the bottom of the shell, thereby solving the H 2 The sulfur produced after the incineration of S causes corrosion to the boiler equipment, resulting in unstable boiler operation and affecting the normal operation of the desulfurization system.

[0019] In addition to the technical problems solved by the utility model described above, the technical features that constitute the technical solution and the advantages brought by the technical features of these technical solutions, other technical problems that can be solved by the sulfur collection device of the utility model, other technical features included in the technical solution and the advantages brought by these technical features will be further described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a synthetic ammonia sulfur tail gas treatment system in an embodiment of the present application;

[0021] Figure 2 is a schematic diagram of a sulfur collection device in an embodiment of the present application;

[0022] Figure 3 is a schematic cross-sectional view of a sulfur collection device in an embodiment of the present application;

[0023] Description of reference numerals:

[0024] 1. Shell; 101. Air inlet; 102. Air outlet; 103. Recovery outlet; 11. Lower shell; 12. Upper shell; 111. First thermal insulation interlayer; 112. First medium inlet; 113. First medium outlet; 121. Second thermal insulation interlayer; 122. Second medium inlet; 123. Second medium outlet;

[0025] 2. Filter device;

[0026] 3. Upper partition;

[0027] 4. Lower partition; 41. Mounting slot;

[0028] a. Upper area; b. Lower area.

[0029] 1000. Sulfur collection device; 2000. Incinerator; 3000. Waste heat boiler. DETAILED DESCRIPTION

[0030] The following is a detailed description of the embodiments of the technical solution of the present application in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] In the process of synthetic ammonia production, in the preparation of synthetic ammonia raw material H 2 When the gas is composed of CO and other gases, H 2 S, currently removing H from the gas 2 S is generally desulfurized by incineration (H 2 S), the tail gas produced after incineration is led to the waste heat utilization boiler, but H 2 S will produce sulfur after burning, H 2 The sulfur produced after the incineration of S will remain in the waste heat boiler, and the sulfur element will cause corrosion to the boiler equipment.

[0032] To solve this problem, Figure 1 The present application provides a synthetic ammonia sulfur tail gas treatment system, which includes: an incinerator 2000, a waste heat boiler 3000 arranged behind the incinerator 2000 through a pipeline, a sulfur collection device 1000 is also arranged in parallel on the pipeline, and a plurality of valves are arranged on the pipeline.

[0033] The utility model sets a sulfur collecting device 1000 in parallel on the pipeline between the original incinerator 2000 and the waste heat boiler 3000, and sets a plurality of valves on the pipeline so that under normal working conditions, the sulfur in the incinerator 2000 2The tail gas after the combustion of S enters the waste heat boiler 3000 through the sulfur collection device 1000.

[0034] like Figures 2-3 The utility model also specifically provides a sulfur collection device 1000, which is arranged at H 2 After the S gas incinerator, the sulfur collection device is connected to the H 2 The sulfur collecting device 1000 is connected to the S gas incinerator, and the gas after passing through the sulfur collecting device enters the waste heat boiler. The sulfur collecting device 1000 comprises: a shell 1 and a filter device 2. An air inlet 101 is arranged in the middle of the shell 1, a recovery outlet 103 is arranged at the bottom of the shell, and an exhaust port 102 is arranged at the top of the shell. The filter device 2 is installed in the shell 1 through an upper partition 3 and a lower partition 4, and the bottom of the filter device 2 is at least higher than the bottom end of the air inlet 101; the upper partition 3, the filter device 2, and the lower partition 4 divide the shell 1 into two upper and lower areas a and b, so that the air inlet 101 is located in the lower area b, and the exhaust port 102 is located in the upper area a.

[0035] In one embodiment of the present invention, H 2 After S is burned in the incinerator 2000, H 2 O and S, and because the incineration temperature is high, the sulfur obtained after incineration exists in the form of mist (i.e. liquid particles), so H 2 The exhaust gas components after S incineration in the incinerator 2000 are mainly water vapor, water mist, and sulfur liquid particles. 2 The sulfur incineration tail gas enters the sulfur collection device 1000 and enters the shell through the air inlet 101 located on the shell 1. In the shell 1, when the sulfur tail gas passes through the filter device, it will remove H 2 The sulfur liquid particles and water mist in the incineration tail gas are blocked on the filter device 2. A large number of sulfur liquid particles and water mist blocked on the filter device 2 will form a liquid flow after being gathered. The liquid flow will fall to the bottom of the shell 1 under the action of gravity. The liquid sulfur falling to the bottom of the shell 1 completes sulfur recovery through the recovery outlet 103 at the bottom of the shell 1. 2 After the sulfur incineration tail gas passes through the filter device 2, the remaining components are mainly water vapor, which is discharged through the exhaust port 102 located at the top of the shell 1. The water vapor discharged from the exhaust port 102 will enter the waste heat boiler. 2 After the sulfur in the exhaust gas of S incineration is recovered, the H 2 The sulfur produced after the incineration of S causes corrosion to the boiler equipment, resulting in unstable boiler operation and affecting the normal operation of the desulfurization system.

[0036] like Figure 2 As shown, the housing in one embodiment of the utility model includes an upper housing 12 and a lower housing 11. Optionally, the upper housing 12 and the lower housing 11 are connected by a flange. The area enclosed by the upper housing 12, the upper partition 3, the filter device 2, the lower partition 4, and the lower housing 11 is the upper area a, and the area enclosed by the lower housing 11, the upper partition 3, the filter device 2, and the lower partition 4 is the lower area b.

[0037] Furthermore, since the solidification temperature of sulfur liquid is about 110°C, in order to prevent the sulfur liquid from solidifying into sulfur solid particles, a heat-insulating interlayer is provided on the shell 1 to prevent the temperature inside the shell 1 from dropping too fast, and a heat-insulating medium inlet and a heat-insulating medium outlet are provided on the heat-insulating interlayer. The heat-insulating medium in the heat-insulating interlayer can be steam or hot water, etc. Optionally, the heat-insulating interlayer is a 0.4MPa steam heating coil.

[0038] Furthermore, when the shell 1 is divided into an upper shell 12 and a lower shell 11, a heat-insulating interlayer is provided on both the upper shell 12 and the lower shell 11, specifically, a first medium inlet 112 and a first medium outlet 113 are provided on the first heat-insulating interlayer 111 located in the lower shell 11; a second medium inlet 122 and a second medium outlet 123 are provided on the second heat-insulating interlayer 121 located in the upper shell 12. Furthermore, the height of the medium inlet of the same heat-insulating interlayer is lower than the height of the medium outlet. Furthermore, the first medium inlet 112 is provided at the recovery outlet 103. By providing the first medium inlet 112 at the recovery outlet 103, it can be ensured that the recovered liquid sulfur is liquid before being discharged from the shell, and the liquid sulfur can be prevented from solidifying due to low temperature at the recovery outlet 103, causing the problem of solid sulfur blocking the recovery outlet 103.

[0039] Furthermore, the filter device 2 provided in the embodiment of the utility model comprises a filter plate and a filter plate frame. The filter plate is composed of a plurality of metal meshes. The filter plate composed of metal meshes can effectively intercept H 2 The effect of atomizing liquid sulfur particles and water mist in the incineration tail gas of S. The lower partition plate 4 is provided with a mounting groove 41 for the filter device 2. A filter plate frame is provided outside the filter plate, the bottom of the filter plate frame is provided in the mounting groove 41, and the top of the filter plate frame is connected to the upper partition plate 3. In the implementation process, after the lower part of the filter device 2 is installed in the mounting groove 41, the upper part of the filter device 2 is connected to the upper partition plate 3 by bolts.

[0040] In summary, the sulfur collection device provided in the embodiment of the present application can effectively collect H 2 The sulfur collection device provided in the embodiment of the present application is applied to the synthetic ammonia sulfur tail gas treatment system of the present application, which can effectively collect H 2After the sulfur in the exhaust gas of S incineration is recovered, the problem of synthetic ammonia treatment H 2 When S gas, H 2 The sulfur produced after the incineration of S causes corrosion to the boiler equipment, resulting in unstable boiler operation and affecting the normal operation of the desulfurization system.

[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "upper", "lower", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description. They do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "set", "provided with", "connected", "installed" and the like should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrated; they can be directly connected, or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A sulfur collection device, which is arranged behind a H2S gas incinerator, is connected to the H2S gas incinerator through a pipeline, and the gas passing through the sulfur collection device enters a waste heat boiler, characterized in that: The sulfur collection device (1000) comprises: A shell (1), wherein an air inlet (101) is arranged in the middle of the shell (1), a recovery outlet (103) is arranged at the bottom of the shell, and an exhaust port (102) is arranged at the top of the shell; A filter device (2), the filter device (2) being installed in the housing (1) via an upper baffle (3) and a lower baffle (4), and the bottom of the filter device (2) being at least higher than the bottom end of the air inlet (101); The upper partition (3), the filter device (2) and the lower partition (4) divide the shell (1) into upper and lower areas (a, b), so that the air inlet (101) is located in the lower area (b) and the air outlet (102) is located in the upper area (a).

2. The sulfur collection device according to claim 1, characterized in that: The housing comprises a lower housing (11) and an upper housing (12).

3. The sulfur collection device according to claim 2, characterized in that: The area enclosed by the upper shell (12), the upper partition (3), the filtering device (2), the lower partition (4), and the lower shell (11) is the upper area (a), and the area enclosed by the lower shell (11), the upper partition (3), the filtering device (2), and the lower partition (4) is the lower area (b).

4. The sulfur collection device according to claim 1 or 2, characterized in that: The shell (1) is provided with a heat-insulating interlayer, and a heat-insulating medium inlet and a heat-insulating medium outlet are provided on the heat-insulating interlayer.

5. The sulfur collection device according to claim 2, characterized in that: A first medium inlet (112) and a first medium outlet (113) are arranged on the first thermal insulation interlayer (111) of the lower shell (11), and the first medium inlet (112) is arranged at the recovery outlet (103); and a second medium inlet (122) and a second medium outlet (123) are arranged on the second thermal insulation interlayer (121) of the upper shell (12).

6. The sulfur collection device according to claim 1, characterized in that: The filtering device (2) comprises a filter plate and a filter plate frame.

7. The sulfur collection device according to claim 6, characterized in that: The filter plate is composed of a plurality of metal wire meshes.

8. The sulfur collection device according to claim 6, characterized in that: The lower partition plate (4) is provided with a mounting groove (41) for the filter device (2).

9. The sulfur collection device according to claim 8, characterized in that: The bottom of the filter plate frame is arranged in the mounting groove (41), and the top of the filter plate frame is connected to the upper partition plate (3).

10. A synthetic ammonia sulfur tail gas treatment system, characterized in that: The invention comprises the sulfur collecting device (1000) as described in any one of claims 1 to 9, wherein the synthetic ammonia sulfur tail gas treatment system comprises: an incinerator (2000), a waste heat boiler (3000) arranged behind the incinerator (2000) through a pipeline, the sulfur collecting device (1000) is also arranged in parallel on the pipeline, and a plurality of valves are arranged on the pipeline.

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