Air pocket steam overheating treatment device
By heating 4.5MPA saturated steam to 390 degrees Celsius in the steam superheating treatment device and integrating it into the 3.8MPA steam network, the problem of insufficient steam was solved, steam quality was improved and power consumption was saved, and production costs were reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN EVERSUN TECH CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-08
AI Technical Summary
At present, the 4.5MPa saturated steam produced by the steam drum can only be depressurized and sent to the 1.3 steam network, and cannot be used as power steam, resulting in insufficient 3.8 superheated steam, which affects the use of the turbine circulating water pump.
The steam superheating treatment device for the steam drum is designed to heat 4.5MPA saturated steam to 390 degrees Celsius through the superheater at the bottom of the synthesis tower, converting it into superheated steam and feeding it into the 3.8MPA steam network, thereby increasing the steam quality and volume. The turbine circulating water pump is used as the power source.
It improved steam quality, increased the amount of superheated steam by 3.8 MPa, saved electricity consumption, and reduced production costs.
Smart Images
Figure CN224215316U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of ammonia synthesis, and in particular to a steam superheating device for a gas drum. Background Technology
[0002] Synthetic ammonia is a major raw material for the fertilizer industry and basic organic chemicals. In the production and processing of synthetic ammonia, the raw materials need to be gasified. The gasification process involves taking the raw coal sent from the coal storage and transportation section and using gasifier gasification technology to provide crude gas to the conversion section. Water in the gasifier drum is pumped into the water-cooled wall coil of the gasifier by a circulating water pump. The water flowing in the coil absorbs the heat of the gasification reaction in the gasifier and partially vaporizes. Steam and water flow together into the medium-pressure steam drum, where vapor-liquid separation takes place. Saturated steam is sent to the steam pipeline network.
[0003] Currently, the steam drum produces 4.5 MPa saturated steam at 258 degrees Celsius. This steam can only be depressurized and sent to the 1.3 steam network to provide heat for the reboiler. It cannot be used as power steam. At present, there is a shortage of 3.8 superheated steam, which makes it impossible to put the turbine circulating water pump into operation. Utility Model Content
[0004] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.
[0005] Therefore, one objective of this utility model is to propose a steam superheating treatment device for steam drums, which can reduce the load of thermal power boilers by increasing the superheat, thereby reducing the amount of fuel coal used.
[0006] To achieve the above objectives, the first aspect of this utility model proposes a steam superheating treatment device, comprising: a gasifier, saturated steam, a boiler water pipeline, a boiler water circulation pump, a medium-pressure gas drum, steam venting, saturated steam, superheated steam to the pipeline network, a synthesis tower, a steam superheater, saturated steam from synthesis and saturated steam from conversion, wherein the saturated steam is connected to the middle part of the gasifier; the upper part of the medium-pressure gas drum is connected to the saturated steam; the boiler water pipeline is connected to the lower part of the medium-pressure gas drum; and the boiler water pipeline is connected to the upper and middle parts of the gasifier after passing through the boiler water circulation pump.
[0007] In addition, the steam superheating treatment device for the gas drum proposed above according to this utility model may also have the following additional technical features:
[0008] Specifically, the steam vent is connected to the upper part of the medium-pressure gas drum; the saturated steam is connected to the upper part of the medium-pressure gas drum.
[0009] Specifically, the saturated vapor comes from synthesis connected to the saturated vapor.
[0010] Specifically, the transformation of saturated vapor is linked to the synthesis of saturated vapor.
[0011] Specifically, the saturated steam comes from the lower part of the synthesis and steam superheater.
[0012] Specifically, the upper part of the steam superheater is connected to the steam vent; the upper part of the steam superheater is connected to the superheated steam pipeline network.
[0013] Specifically, the upper part of the steam superheater is connected to the synthesis tower.
[0014] Compared with existing technologies, this utility model has the following beneficial effects: The steam superheating treatment device heats the 4.5MPA saturated steam produced by the gasifier to 390 degrees Celsius using a superheater at the bottom of the synthesis tower. After being heated from saturated steam to superheated steam, it is then connected to the 3.8MPA steam network, solving the problem of insufficient 3.8MPA superheated steam production. Furthermore, it improves steam quality and increases the volume of 3.8MPA superheated steam (the original design depressurized the steam from the steam drum before connecting it to the 1.3MPA steam network). Simultaneously, it increases the 3.8MPA steam used for power generation, and by using a turbine circulating water pump, it saves electricity and reduces production costs.
[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
[0017] Figure 1 This is a schematic diagram of the steam conveying route structure of a steam superheating treatment device according to an embodiment of the present invention;
[0018] Figure 2 This is a schematic diagram of the steam heating route structure of a steam superheating treatment device according to an embodiment of the present invention;
[0019] Figure 3 This is a schematic diagram of the anti-slip mechanism of a steam superheat treatment device according to an embodiment of the present invention;
[0020] Figure 4 This is a schematic diagram of the working process of a steam superheating treatment device according to an embodiment of the present invention.
[0021] Reference numerals: 1. Gasifier; 2. First saturated steam; 3. Boiler water pipeline; 4. Boiler water circulation pump; 5. Medium-pressure steam drum; 6. First steam vent; 7. Second saturated steam; 8. Second steam vent; 9. Superheated steam to pipeline network; 10. Synthesis tower; 11. Steam superheater; 12. Saturated steam from synthesis; 13. Saturated steam from conversion. Detailed Implementation
[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0023] The steam superheating treatment apparatus of the present invention according to an embodiment of the present invention is described below with reference to the accompanying drawings.
[0024] like Figures 1-4 As shown, the steam superheating treatment device of this utility model embodiment includes: a gasifier 1, a first saturated steam 2, a boiler water pipeline 3, a boiler water circulation pump 4, a medium-pressure steam drum 5, a first steam vent 6, a second saturated steam 7, a second steam vent 8, superheated steam to pipeline network 9, a synthesis tower 10, a steam superheater 11, saturated steam from synthesis 12, and saturated steam from conversion 13.
[0025] The first saturated steam 2 is connected to the middle part of the gasifier 1, the upper part of the medium-pressure gas manifold 5 is connected to the first saturated steam 2, the boiler water pipeline 3 is connected to the lower part of the medium-pressure gas manifold 5, and the boiler water pipeline 3 is connected to the upper and middle parts of the gasifier 1 after passing through the boiler water circulation pump 4.
[0026] In one embodiment of this application, such as Figure 1 and Figure 4 As shown, the first steam vent 6 is connected to the upper part of the medium-pressure gas reservoir 5, and the second saturated steam 7 is connected to the upper part of the medium-pressure gas reservoir 5.
[0027] Understandably, the second saturated steam 7, as one of the steam sources within the intermediate-pressure steam reservoir 5, is connected to the upper part of the intermediate-pressure steam reservoir 5 to ensure smooth steam flow. Furthermore, the saturated steam originating from synthesis 12 is connected to the second saturated steam 7, enabling the effective utilization of saturated steam from the synthesis process and further improving the integration efficiency of steam resources.
[0028] In one embodiment of this application, such as Figure 3 and Figure 4 As shown, the saturated vapor comes from synthesis 12 connected to the second saturated vapor 7.
[0029] Understandably, the saturated steam from synthesis 12 serves as another steam source, and its connection with the second saturated steam 7 not only enhances the stability of the steam supply but also optimizes the steam flow path within the unit. This design allows the steam to flow more efficiently to the steam superheater 11, providing ample steam resources for subsequent superheating processes.
[0030] In one embodiment of this application, such as Figure 3 and Figure 4 As shown, saturated vapor from transformation 13 is connected to saturated vapor from synthesis 12.
[0031] Understandably, the saturated steam originating from the conversion process in shift 13, combined with the saturated steam from synthesis 12, maximizes the utilization of steam resources. This ensures the continuity of steam flow and helps maintain stable steam pressure and temperature within the steam superheating unit, thereby improving the overall operating efficiency of the unit.
[0032] In one embodiment of this application, such as Figure 3 and Figure 4 As shown, saturated steam originates from the synthesis unit 12 and is connected to the lower part of the steam superheater 11.
[0033] Understandably, the steam superheater 11, as the core component of this device, is connected at its lower part to the saturated steam from the synthesis 12, ensuring that the saturated steam can smoothly enter the superheater for heating. This simplifies the steam flow path and also helps to improve the efficiency of superheating.
[0034] In one embodiment of this application, such as Figure 3 and Figure 4 As shown, the upper part of the steam superheater 11 is connected to the second steam vent 8, and the upper part of the steam superheater 11 is connected to the superheated steam pipeline 9.
[0035] Understandably, the upper part of the steam superheater 11 ensures that the superheated steam can be discharged into the atmosphere in a timely manner when needed through the second steam vent 8 and the superheated steam to pipeline network 9, so as to avoid excessive pressure inside the device and ensure that the superheated steam can be stably delivered to the pipeline network for use in subsequent processes.
[0036] In one embodiment of this application, such as Figure 3 and Figure 4 As shown, the upper part of the steam superheater 11 is connected to the synthesis tower 10.
[0037] Understandably, the connection design between the upper part of the steam superheater 11 and the synthesis tower 10 fully utilizes steam resources, providing stable and high-quality superheated steam for the synthesis tower. The optimized steam flow path within the unit allows the steam to flow more efficiently to the synthesis tower, providing sufficient and suitable heat for the synthesis reaction.
[0038] Specifically, when using the steam heat treatment unit, the 4.5MPa first saturated steam 2 produced by the gasifier 1 needs to be heated to 390 degrees Celsius using the superheater at the bottom of the synthesis tower 10. After being heated from saturated steam to superheated steam, it is then connected to the 3.8MPa steam network. First, the 4.5MPa saturated steam produced by the gasifier 1 is heated to 390 degrees Celsius by the steam superheater 11, transforming it into superheated steam. The superheated steam then enters the second steam vent 8, the superheated steam distribution network 9, and the synthesis tower 10 through the connecting pipes at the top of the steam superheater 11. The second steam vent 8 is used to release excess steam during unit startup or malfunction to ensure unit safety. The superheated steam distribution network 9 transports the superheated steam to where it is needed, such as a steam turbine, to drive equipment and reduce power consumption. The synthesis tower 10 uses the superheated steam for chemical reactions to improve production efficiency. During the heating process of the steam superheater 11, saturated steam from synthesis 12 and saturated steam from conversion 13 serve as steam sources, continuously supplying the first saturated steam 2 to the steam superheater 11. Saturated steam from synthesis 12 is connected to the second saturated steam 7, while saturated steam from conversion 13 is connected to saturated steam from synthesis 12, forming a complete steam supply system. Simultaneously, when the internal steam pressure is too high, the first steam vent 6 discharges excess steam into the atmosphere to ensure the safe operation of the device. Furthermore, the medium-pressure steam tank 5 provides a stable steam supply even when steam demand fluctuates.
[0039] In summary, the steam superheating device in this embodiment heats the 4.5MPA saturated steam produced by the gasifier to 390 degrees Celsius using a superheater at the bottom of the synthesis tower. After being heated from saturated steam to superheated steam, it is then fed into the 3.8MPA steam network, solving the problem of insufficient 3.8MPA superheated steam production. Furthermore, it improves steam quality and increases the volume of 3.8MPA superheated steam (the original design depressurized the steam from the gas drum before feeding it into the 1.3MPA steam network). Simultaneously, it increases the 3.8MPA steam used for power generation, utilizing a turbine circulating water pump, saving electricity and reducing production costs.
[0040] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A steam superheating treatment device for a gas drum, characterized in that, include: Gasifier (1), first saturated steam (2), boiler water pipeline (3), boiler water circulation pump (4), medium-pressure steam drum (5), first steam vent (6), second saturated steam (7), second steam vent (8), superheated steam to pipeline network (9), synthesis tower (10), steam superheater (11), saturated steam from synthesis (12) and saturated steam from conversion (13), wherein, The first saturated steam (2) is connected to the middle of the gasifier (1); The upper part of the medium-pressure gas chamber (5) is connected to the first saturated steam (2); The boiler water pipeline (3) is connected to the lower part of the medium-pressure gas chamber (5); The boiler water pipeline (3) is connected to the upper and middle parts of the gasifier (1) after passing through the boiler water circulation pump (4).
2. The steam superheating treatment device for a gas drum according to claim 1, characterized in that, The first steam vent (6) is connected to the upper part of the medium-pressure gas tank (5); The second saturated vapor (7) is connected to the upper part of the medium-pressure gas tank (5).
3. The steam superheating treatment device for a gas drum according to claim 1, characterized in that, The saturated vapor comes from the synthesis (12) connected to the second saturated vapor (7).
4. The steam superheating treatment device for a gas drum according to claim 1, characterized in that, The saturated vapor originates from transformation (13) and is connected to synthesis (12).
5. The steam superheating treatment device for a gas drum according to claim 1, characterized in that, The saturated steam comes from the synthesis (12) and is connected to the lower part of the steam superheater (11).
6. The steam superheating treatment apparatus for a gas drum according to claim 1, characterized in that, The upper part of the steam superheater (11) is connected to the second steam vent (8); The upper part of the steam superheater (11) is connected to the superheated steam pipeline (9).
7. The steam superheating treatment apparatus for a gas drum according to claim 1, characterized in that, The upper part of the steam superheater (11) is connected to the synthesis tower (10).