Sewage blockage treatment system for ammonia injection grid
By combining an intelligent control system with an acoustic soot blower and a pressure transmitter in the ammonia injection grid, the problem of clogging in the ammonia injection grid was solved, achieving efficient cleaning and stable operation, and reducing the workload of manual operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU XITU ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-19
AI Technical Summary
Existing ammonia spraying grids are prone to clogging during long-term operation, resulting in uneven ammonia injection, reduced denitrification efficiency, and potential corrosion and damage to the equipment. Traditional cleaning methods are cumbersome and have limited effectiveness.
An intelligent control system combining an acoustic soot blower and a pressure transmitter is adopted. By detecting the pressure value inside the ammonia injection pipe in real time, the acoustic soot blower is automatically turned on or off. The sonic vibration is used to clear blockages and avoid damage to the ammonia injection pipe.
It achieves efficient cleaning of clogging without damaging the ammonia injection pipe, reduces manual operation, and improves the stability and denitrification efficiency of the ammonia injection grid.
Smart Images
Figure CN224253729U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of flue gas denitrification technology, and in particular relates to an ammonia injection grid clogging treatment system. Background Technology
[0002] In industrial flue gas denitrification systems, ammonia injection grids are key components for uniformly injecting ammonia gas into the flue gas to achieve efficient denitrification. However, during long-term operation, ammonia injection grids are prone to clogging. The ammonia injection pipes within the grid can become blocked due to ammonium bisulfate crystallization, fly ash deposition, and other factors. This leads to uneven ammonia injection, reducing denitrification efficiency, increasing ammonia escape, causing corrosion and damage to downstream equipment, and affecting the stable operation of the entire denitrification system.
[0003] Existing methods for treating ammonia injection grid blockage have many shortcomings. Traditional mechanical cleaning methods are not only cumbersome and labor-intensive, but also prone to damaging the ammonia injection pipes during the cleaning process. While methods such as steam blowing have limited cleaning effectiveness and are unable to completely remove stubborn blockages, frequent use of steam blowing can also lead to thermal fatigue damage to the ammonia injection grid components.
[0004] Therefore, how to effectively solve the problems of poor cleaning effect and cumbersome operation in the traditional ammonia injection grid clogging treatment technology without damaging the ammonia injection pipe is a technical problem that urgently needs to be solved by those skilled in the art.
[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content
[0006] This disclosure provides at least one ammonia injection grid clogging treatment system.
[0007] In a first aspect, embodiments of this disclosure provide an ammonia-injected grid clogging treatment system, comprising:
[0008] case;
[0009] Several ammonia injection pipes are arranged and inserted into the shell to form a grid structure, and each ammonia injection pipe is provided with several ammonia injection holes.
[0010] The sonic soot blower is located on both sides of the housing;
[0011] A pressure transmitter is installed at the inlet end of the ammonia injection pipe to detect the pressure value inside the ammonia injection pipe.
[0012] The acoustic soot blower and the pressure transmitter are both electrically connected to the control module, which is configured to receive the pressure value detected by the pressure transmitter and turn the acoustic soot blower on or off according to the pressure value.
[0013] In one optional embodiment, the acoustic sootblower's acoustic emission port faces the ammonia injection pipe, and the emission direction of the acoustic sootblower is consistent with the flow direction of the flue gas inside the housing.
[0014] In an optional implementation, the control module is further configured to:
[0015] When the pressure value detected by the pressure transmitter is higher than the preset pressure threshold, the acoustic soot blower is activated; or
[0016] When the pressure value detected by the pressure transmitter is lower than the preset pressure threshold, the sonic soot blower is turned off.
[0017] In one optional implementation, the preset pressure threshold is 1.3-1.8 times the normal pressure value inside the ammonia injection pipe.
[0018] In one optional embodiment, the ammonia injection pipe includes multiple connecting pipe sections, which are connected by quick-connect clamps; and,
[0019] The inlet end of the connecting pipe is connected to the ammonia supply pipeline, and a valve is installed between the quick-assembly chuck and the inlet end of the connecting pipe.
[0020] Secondly, embodiments of this disclosure also provide an ammonia-injected grid clogging treatment system, comprising:
[0021] Several ammonia injection pipes are arranged in a grid structure, and each ammonia injection pipe is provided with several ammonia injection holes.
[0022] Pressure transmitters are connected to each ammonia injection pipe and are used to detect the pressure value inside the ammonia injection pipe.
[0023] The unblocking mechanism is located on both sides of the ammonia injection pipe;
[0024] The control module is electrically connected to the pressure transmitter and the unblocking mechanism. The control module is configured to receive the pressure value detected by the pressure transmitter and control the start and stop of the unblocking mechanism according to the pressure value.
[0025] In one alternative embodiment, the unblocking mechanism includes an acoustic soot blower with its acoustic emission port facing the ammonia injection pipe.
[0026] In one alternative implementation, the control module is electrically connected to the acoustic soot blower and the pressure transmitter, and is further configured to:
[0027] When the pressure value detected by the pressure transmitter is higher than the preset pressure threshold, the acoustic soot blower is activated; or
[0028] When the pressure value detected by the pressure transmitter is lower than the preset pressure threshold, the sonic soot blower is turned off.
[0029] In one optional implementation, the preset pressure threshold is 1.3-1.8 times the normal pressure value inside the ammonia injection pipe.
[0030] In one optional embodiment, the ammonia injection pipe includes multiple connecting pipe sections, which are connected by quick-connect clamps; and,
[0031] The inlet end of the connecting pipe is connected to the ammonia supply pipeline, and a valve is installed between the quick-assembly chuck and the inlet end of the connecting pipe.
[0032] The beneficial effects of this utility model are as follows: This ammonia injection grid clogging treatment system, by installing a pressure transmitter on the ammonia injection pipe and ultrasonic soot blowers on both sides of the pipe, connects both the ultrasonic soot blowers and the pressure transmitter to a control module. The pressure transmitter can monitor the pressure value inside the ammonia injection pipe in real time. When clogging occurs in the ammonia injection pipe or injection hole, the pressure value becomes abnormal. The control module then activates the ultrasonic soot blowers, using the vibration of sound waves to loosen and remove accumulated ash, crystals, and other blockages inside the ammonia injection pipe and injection holes, thereby achieving the purpose of cleaning the clogging without damaging the ammonia injection pipe. The system's control module can automatically start and stop the ultrasonic soot blowers according to the pressure value of the ammonia injection pipe, achieving intelligent clogging treatment and reducing the workload of manual operation.
[0033] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and drawings.
[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0035] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0036] Figure 1 A perspective view of an ammonia injection grid clogging treatment system provided in an embodiment of this disclosure;
[0037] Figure 2This is a cross-sectional view of an ammonia injection grid clogging treatment system provided in an embodiment of this disclosure;
[0038] Figure 3 This is a schematic diagram of an ammonia injection grid clogging treatment system provided in an embodiment of this disclosure.
[0039] In the picture:
[0040] 100. Housing; 200. Ammonia injection pipe; 210. Ammonia injection port; 220. Connecting pipe; 230. Quick-release chuck; 240. Valve; 300. Unblocking mechanism; 310. Acoustic soot blower; 311. Acoustic emission port; 400. Pressure transmitter; 500. Ammonia water supply pipeline. Detailed Implementation
[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions 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, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0042] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.
[0043] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.
[0044] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.
[0045] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.
[0046] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0047] Research has revealed shortcomings in existing technologies: current methods for treating ammonia injection grid blockages have numerous deficiencies. Traditional mechanical cleaning methods are not only cumbersome and labor-intensive, but also prone to damaging the ammonia injection pipes during the cleaning process. While methods such as steam blowing have limited cleaning effectiveness and are unable to completely remove stubborn blockages, frequent use of steam blowing can also lead to thermal fatigue damage to the ammonia injection grid components.
[0048] Based on the above research, this disclosure provides an ammonia spraying grid clogging treatment system that connects an acoustic soot blower and a pressure transmitter to a control module. The control module opens or closes the acoustic soot blower according to the pressure detected by the pressure transmitter, thereby achieving intelligent clogging treatment and solving the above-mentioned problems.
[0049] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.
[0050] 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.
[0051] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0052] See Figure 1 This disclosure provides an ammonia injection grid clogging treatment system, including: a housing 100; a plurality of ammonia injection pipes 200 arranged inside the housing 100 to form a grid structure, and a plurality of ammonia injection holes 210 opened on the ammonia injection pipes 200 for injecting ammonia gas into the flue gas in the housing 100.
[0053] See Figure 1 and Figure 3 The housing 100 has sonic soot blowers 310 on both sides; and an ammonia injection pipe 200 has a pressure transmitter 400, which can detect the pressure value inside the ammonia injection pipe 200 in real time. Preferably, the pressure transmitter 400 is located at the inlet of the ammonia injection pipe 200, which is easy to disassemble, install, maintain and replace. Both the sonic soot blowers 310 and the pressure transmitter 400 are electrically connected to the control module, which is configured to receive the pressure value detected by the pressure transmitter 400 and turn the sonic soot blowers 310 on or off according to the pressure value.
[0054] Specifically, when the ammonia injection pipe 200 or the ammonia injection hole 210 becomes clogged, the pressure value inside the ammonia injection pipe 200 will gradually increase. When the pressure transmitter 400 detects that the pressure value inside the ammonia injection pipe 200 exceeds the preset pressure threshold, the control module activates the sonic soot blower 310. The vibration of the sonic waves loosens and removes the accumulated dust, crystals, and other blockages inside the ammonia injection pipe 200 and at the ammonia injection hole 210, thereby achieving the purpose of cleaning the blockage without damaging the ammonia injection pipe 200.
[0055] After the sonic soot blower 310 has been working for a period of time, when the pressure transmitter 400 detects that the pressure value in the ammonia injection pipe 200 is lower than the preset pressure threshold, it indicates that the problem of clogging in the ammonia injection pipe 200 or the ammonia injection hole 210 has been solved, and the control module shuts down the sonic soot blower 310.
[0056] See also Figure 1In some embodiments, the preset pressure threshold is 1.3-1.8 times the normal pressure value of the ammonia injection pipe 200, preferably 1.5 times.
[0057] See Figure 2 In some embodiments, the acoustic emission port 311 of the acoustic soot blower 310 faces the direction of the ammonia injection pipe 200, such as... Figure 2 As indicated by arrow F2, the above configuration enhances the transmission efficiency of acoustic vibration energy on the surface of the ammonia injection pipe 200. The flow direction of the flue gas inside the housing 100 is as follows: Figure 2 As indicated by arrow F1, the sound wave flows from bottom to top. The emission direction of the sonic soot blower 310 is consistent with the flow direction of the flue gas inside the housing 100, which allows the sound wave to propagate in the flue gas medium in the same direction, reducing energy attenuation.
[0058] See Figure 1 In some embodiments, the ammonia injection pipe 200 includes multiple connecting pipes 220, which are connected by quick-connect chucks 230. The inlet end of each connecting pipe 220 is connected to an ammonia supply pipe 500, and a valve 240 is provided between the quick-connect chuck 230 and the inlet end of each connecting pipe 220. After the valve 240 on the ammonia injection pipe 200 is closed, the ammonia injection pipe 200 can be removed from the housing 100 by disassembling the quick-connect chuck 230. This allows for the removal of accumulated dust, crystals, and other blockages from the ammonia injection pipe 200, preventing them from accumulating and causing secondary blockages.
[0059] See Figure 1 Some embodiments also provide an ammonia injection grid clogging treatment system, including: a plurality of ammonia injection pipes 200 arranged in a grid structure, and a plurality of ammonia injection holes 210 opened on the ammonia injection pipes 200; a pressure transmitter 400 connected to each ammonia injection pipe 200 for detecting the pressure value inside the ammonia injection pipe 200; a clogging removal mechanism 300 disposed on both sides of the ammonia injection pipes 200; and a control module electrically connected to the pressure transmitter 400 and the clogging removal mechanism 300, the control module being configured to: receive the pressure value detected by the pressure transmitter 400, and control the start and stop of the clogging removal mechanism 300 according to the pressure value.
[0060] See also Figure 1 In some embodiments, the unblocking mechanism 300 may, but is not limited to, employ an acoustic soot blower 310, with its acoustic emission port 311 facing the direction of the ammonia injection pipe 200.
[0061] See Figure 1 and Figure 2In some embodiments, the control module is electrically connected to the acoustic soot blower 310 and the pressure transmitter 400, and is further configured to: turn on the acoustic soot blower 310 when the pressure value detected by the pressure transmitter 400 is higher than a preset pressure threshold; or turn off the acoustic soot blower 310 when the pressure value detected by the pressure transmitter 400 is lower than a preset pressure threshold.
[0062] As a specific implementation, the pressure transmitter 400 may be, but is not limited to, the Spartacus SBT904, the control module may be the Siemens S7-1200, and the sonic soot blower 310 may be the DSK-5.
[0063] In this embodiment, the control module involved is electrically connected to the pressure transmitter 400 and the acoustic soot blower 310 and is configured to receive the pressure value detected by the pressure transmitter 400 and to open or close the acoustic soot blower 310 according to the pressure value. These control methods or programs are all existing technologies or conventional technical means. This utility model does not make any substantial improvement to the above control methods and programs themselves. The above expression can be regarded as an electrical connection relationship.
[0064] In summary, this ammonia injection grid clogging treatment system utilizes a pressure transmitter 400 installed on the ammonia injection pipe 200, and acoustic soot blowers 310 installed on both sides of the ammonia injection pipe 200. Both the acoustic soot blowers 310 and the pressure transmitter 400 are connected to the control module. The pressure transmitter 400 can monitor the pressure value inside the ammonia injection pipe 200 in real time. When clogging occurs in the ammonia injection pipe 200 or the ammonia injection orifice 210, the pressure value becomes abnormal. The control module then activates the acoustic soot blowers 310, using the vibration of sound waves to loosen and remove accumulated ash, crystals, and other blockages inside the ammonia injection pipe 200 and at the ammonia injection orifice 210, thereby achieving the purpose of cleaning the clogging without damaging the ammonia injection pipe 200. The system's control module can automatically start and stop the acoustic soot blowers 310 based on the pressure value of the ammonia injection pipe 200, achieving intelligent clogging treatment and reducing the workload of manual operation.
[0065] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 based on the specific circumstances.
[0066] 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., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are 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, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.
[0067] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.
[0068] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.
[0069] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. An ammonia spraying grid clogging treatment system, characterized in that, include: Casing (100); A plurality of ammonia injection pipes (200) are arranged and pass through the housing (100) to form a grid structure, and a plurality of ammonia injection holes (210) are opened on the ammonia injection pipes (200). An acoustic soot blower (310) is disposed on both sides of the housing (100); A pressure transmitter (400) is installed at the inlet end of the ammonia injection pipe (200) to detect the pressure value inside the ammonia injection pipe (200); The acoustic soot blower (310) and the pressure transmitter (400) are both electrically connected to the control module. The control module is configured to receive the pressure value detected by the pressure transmitter (400) and turn the acoustic soot blower (310) on or off according to the pressure value.
2. The ammonia spraying grid clogging treatment system as described in claim 1, characterized in that, The acoustic emission port (311) of the acoustic soot blower (310) faces the ammonia injection pipe (200), and the emission direction of the acoustic soot blower (310) is consistent with the flow direction of the flue gas inside the housing (100).
3. The ammonia spraying grid clogging treatment system as described in claim 1, characterized in that, The control module is also configured to: When the pressure value detected by the pressure transmitter (400) is higher than the preset pressure threshold, the acoustic soot blower (310) is activated; or When the pressure value detected by the pressure transmitter (400) is lower than the preset pressure threshold, the sonic soot blower (310) is turned off.
4. The ammonia spraying grid clogging treatment system as described in claim 3, characterized in that, The preset pressure threshold is 1.3-1.8 times the normal pressure value inside the ammonia injection pipe (200).
5. The ammonia injection grid clogging treatment system as described in claim 1, characterized in that, The ammonia injection pipe (200) includes multiple connecting pipe sections (220), which are connected to each other via quick-release chucks (230); and, The inlet end of the connecting pipe (220) is connected to the ammonia supply pipe (500), and a valve (240) is provided between the quick-install chuck (230) and the inlet end of the connecting pipe (220).
6. An ammonia spraying grid clogging treatment system, characterized in that, include: A plurality of ammonia injection pipes (200) are arranged in a grid structure, and a plurality of ammonia injection holes (210) are provided on the ammonia injection pipes (200). A pressure transmitter (400) is connected to each ammonia injection pipe (200) and is used to detect the pressure value inside the ammonia injection pipe (200); The unblocking mechanism (300) is installed on both sides of the ammonia injection pipe (200); The control module is electrically connected to the pressure transmitter (400) and the unblocking mechanism (300). The control module is configured to receive the pressure value detected by the pressure transmitter (400) and control the start and stop of the unblocking mechanism (300) according to the pressure value.
7. The ammonia spraying grid clogging treatment system as described in claim 6, characterized in that, The unblocking mechanism (300) includes an acoustic soot blower (310) with its acoustic emission port (311) facing the ammonia injection pipe (200).
8. The ammonia injection grid clogging treatment system as described in claim 7, characterized in that, The control module is electrically connected to the acoustic soot blower (310) and the pressure transmitter (400), and is further configured to: When the pressure value detected by the pressure transmitter (400) is higher than the preset pressure threshold, the acoustic soot blower (310) is activated; or When the pressure value detected by the pressure transmitter (400) is lower than the preset pressure threshold, the sonic soot blower (310) is turned off.
9. The ammonia spraying grid clogging treatment system as described in claim 8, characterized in that, The preset pressure threshold is 1.3-1.8 times the normal pressure value inside the ammonia injection pipe (200).
10. The ammonia spraying grid clogging treatment system as described in claim 6, characterized in that, The ammonia injection pipe (200) includes multiple connecting pipe sections (220), which are connected to each other via quick-release chucks (230); and, The inlet end of the connecting pipe (220) is connected to the ammonia supply pipe (500), and a valve (240) is provided between the quick-install chuck (230) and the inlet end of the connecting pipe (220).