Waste incineration fly ash conveying, storing and heat tracing device
The fly ash conveying and storage device addresses moisture-induced corrosion and high energy costs by employing a multi-source heat tracing system with waste heat reuse, maintaining dryness and stability in fly ash transport and storage.
Patent Information
- Application Number
- CN202420774668.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2024-12-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Fly ash from waste incineration plants is prone to water absorption and corrosion due to its moisture sensitivity, leading to equipment damage and high energy consumption from traditional electric heating systems.
A fly ash conveying, storage, and heating device utilizing a heat source mechanism with multiple heat sources, including boiler emergency water discharge, continuous expansion tank, and fixed row mother pipe heat sources, which provide tracing heat through S-shaped coils and a filtering mechanism to ensure dryness and prevent corrosion, while reusing waste heat.
The device ensures fly ash remains dry, preventing equipment corrosion and reducing energy consumption by using waste heat instead of electricity, ensuring continuous and stable heating without the need for electric heating.
Smart Images
Figure CN222158760U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of fly ash treatment equipment for waste incineration power plants, and in particular, relates to a waste incineration fly ash transportation, storage and heating device. Background Art
[0002] Waste incineration has become one of the main methods of urban waste treatment. At present, waste incineration power plants have achieved comprehensive applications such as waste incineration power generation. When waste is incinerated in waste incineration power plants, the flue gas produced contains a large amount of fly ash. Because fly ash has strong water absorption and strong adsorption, it must be treated harmlessly.
[0003] In the process of harmless treatment of fly ash, due to its strong water absorption characteristics, it is extremely easy to absorb water or even liquefy in a humid or cold environment. Therefore, it is easy to cause corrosion, blockage and other hazards to the transportation and storage equipment of fly ash, seriously affecting its safe and stable operation. Traditional electric heating systems mostly set a heating jacket on the outer surface of the fly ash storage tank, and the heating jacket is usually heated by electricity, so it requires additional energy consumption and increases costs; moreover, the heating effect of traditional electric heating systems is not good, and fly ash is easy to be affected by moisture. Due to its poor stability and easy water absorption, it is easy to adhere to the inner wall of the transportation and storage equipment, corroding the equipment and causing damage to the equipment. Summary of the invention
[0004] The present application provides a device for conveying, storing and heating fly ash from garbage incineration, which solves the problem that fly ash is easily corroded by moisture and the heating energy cost is high.
[0005] The embodiment of the present application provides a waste incineration fly ash conveying, storage and heating device, including a fly ash conveying and storage mechanism, the fly ash conveying and storage mechanism is used to convey and store fly ash generated after waste incineration, and is characterized in that it also includes a fixed row expansion container, a heat source mechanism and a hot water well;
[0006] One end of the heat source mechanism is connected to the fixed row expansion tank, and the other end of the heat source mechanism passes through the fly ash conveying and storage mechanism and is respectively connected to the fixed row expansion tank and the hot water well, and the fixed row expansion tank is also connected to the hot water well;
[0007] The heat source mechanism includes a boiler emergency water discharge heat source, a row expansion tank heat source and a fixed row mother pipe heat source.
[0008] Optionally, the boiler emergency water discharge heat source is heat provided by boiler drainage, and the boiler emergency water discharge heat source is connected to a heat source input main pipeline through a boiler drainage pipe;
[0009] The heat source of the continuous expansion tank is the heat provided by the continuous expansion tank, and the heat source of the continuous expansion tank is connected to the heat source input main pipeline through the continuous expansion tank drainage pipe;
[0010] The fixed row mother pipe heat source is heat provided by the fixed row mother pipes, and the fixed row mother pipe heat source is connected to the heat source input main pipeline through the fixed row mother pipes.
[0011] Optionally, the heat source input main pipeline is also connected to the inlet of the fixed row expansion vessel;
[0012] The heat source input main pipeline is also provided with a heat source input main pipeline valve, which is located between the heat source mechanism and the fixed-discharge expansion tank and is in a normally closed state.
[0013] Optionally, the fly ash conveying and storage mechanism comprises an ash conveying scraper, an ash bin, and a bucket elevator, and the ash conveying scraper, the ash bin, and the bucket elevator are all provided with an S-shaped coil;
[0014] One end of the S-shaped coils on the ash conveying scraper, ash chamber and bucket elevator is connected to a heat source input main pipeline, and the other end of the S-shaped coils on the ash conveying scraper, ash chamber and bucket elevator is connected to a heat source output main pipeline.
[0015] Optionally, a heat source control valve is provided between one end of the S-shaped coil on the ash conveying scraper, ash chamber, and bucket elevator and the heat source input main pipeline.
[0016] Optionally, the heat source output main pipeline is connected to the hot water well through a heat source output branch pipeline, and a branch pipeline control valve is provided on the heat source output branch pipeline, and the branch pipeline control valve is in a normally closed state.
[0017] Optionally, the heat source output main pipeline is connected to the heat source input main pipeline through a heat source return pipeline, and a heat source return valve is provided on the heat source return pipeline, and the heat source return valve is in a normally open state.
[0018] Optionally, the outlet of the fixed-row expansion vessel is connected to a waste heat main pipeline, and a waste heat main pipeline valve and a measuring instrument are provided on the waste heat main pipeline;
[0019] The waste heat main pipeline is also connected to a waste heat branch pipeline connected in parallel with the waste heat pipeline valve and the measuring instrument, and the waste heat branch pipeline is provided with a waste heat branch pipeline valve.
[0020] Optionally, a filtering mechanism is provided on the heat source input main pipeline and before the fly ash conveying and storage mechanism, and the filtering mechanism is installed on the heat source input main pipeline through a fastening bracket.
[0021] Optionally, the filtering mechanism comprises a rotatable rotating disk, the rotating disk is provided with two sewage through holes, and the sewage through holes are provided with a filter screen;
[0022] The rotating disk is provided with an axial hole, a fixed shaft is inserted into the axial hole, and the fixed shaft is fixed on the fastening bracket.
[0023] The present application provides a heat tracing device for conveying and storing fly ash from garbage incineration, which performs heat exchange between the heat tracing heat source provided by the heat source mechanism and the fly ash conveying and storage mechanism, and has a good heat exchange effect, thereby ensuring the dryness of the fly ash inside the fly ash conveying and storage mechanism, so that the fly ash will not absorb water and corrode the equipment due to moisture; the fly ash conveying and storage mechanism adopts the heat tracing heat source provided by the heat source mechanism, abandons the electric heating method, and does not require electricity consumption; the heat of sewage that originally needs to be directly discharged, such as the boiler emergency water discharge heat source, the continuous expansion tank heat source and the fixed row mother pipe heat source in the heat source mechanism, is reused, which not only realizes heat exchange with the fly ash conveying and storage mechanism, but also improves the reuse value of the sewage heat; the selection of multiple heat sources in the heat source mechanism ensures the continuous and stable supply of the heat tracing heat source. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0025] Figure 1 This is a schematic diagram of the structure of the waste incineration fly ash transportation, storage and heating device for this application;
[0026] Figure 2 It is a schematic diagram of the installation position of the filtering mechanism;
[0027] Figure 3 It is a structural diagram of the filtering mechanism.
[0028] Explanation of symbols in the figure:
[0029] 1-fixed row expansion tank; 2-heat source mechanism; 3-fly ash conveying and storage mechanism; 4-hot water well; 5-filter mechanism; 6-fixed shaft; 7-fastening bracket; 11-heat source output main pipeline; 12-heat source output branch pipeline; 13-heat source input main pipeline valve; 14-waste heat branch pipeline; 15-waste heat main pipeline; 16-heat source return pipeline; 21-boiler emergency water discharge heat source; 22-continuous row expansion tank heat source; 23-fixed row mother pipe heat source; 24-heat source input main pipeline; 31-ash conveying scraper; 32-ash cabin; 33-bucket elevator; 51-rotating disk; 52-sewage through hole; 53-sealing ring; 54-shaft hole. DETAILED DESCRIPTION
[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0031] A waste incineration fly ash transportation, storage and heating device provided in an embodiment of the present application is now described. Figure 1 A waste incineration fly ash conveying, storage and heating device comprises a fixed-discharge expansion container 1, a heat source mechanism 2, a fly ash conveying and storage mechanism 3 and a hot water well 4.
[0032] One end of the heat source mechanism 2 is connected to the fixed row expansion tank 1, and the other end of the heat source mechanism 2 passes through the fly ash conveying and storage mechanism 3 to respectively connect the fixed row expansion tank 1 and the hot water well 4, and the fixed row expansion tank 1 is also connected to the hot water well 4. During operation, the fly ash conveying and storage mechanism 3 conveys and stores the fly ash generated after the incineration of garbage, and the heat source mechanism 2 provides a tracing heat source to the fly ash conveying and storage mechanism 3. The fly ash in the fly ash conveying and storage mechanism 3 is heated by the tracing heat source provided by the heat source mechanism 2. The temperature of the tracing heat source after heat exchange is reduced, and it is determined whether to enter the fixed row expansion tank 1 or directly discharge into the hot water well 4 according to the temperature of the tracing heat source after the reduction. In actual applications, the tracing heat source is generally sent to the fixed row expansion tank 1 for treatment, and the treated tracing heat source is discharged into the hot water well 4. Of course, when the fixed row expansion tank 1 fails, the tracing heat source after heat exchange can also be directly discharged into the hot water well 4 in an emergency. When the fly ash conveying and storage mechanism 3 does not need heating temporarily, the heating source provided by the heat source mechanism 2 can also be directly sent to the fixed-row expansion vessel 1 for subsequent processing by the fixed-row expansion vessel 1.
[0033] Specifically, the heat source mechanism 2 includes a boiler emergency water discharge heat source 21, a row expansion vessel heat source 22, and a fixed row mother pipe heat source 23. The boiler emergency water discharge heat source 21 provides heat for boiler drainage, and is connected to the heat source input main pipeline 24 through a boiler drainage pipe; the row expansion vessel heat source 22 provides heat for the row expansion vessel, and is connected to the heat source input main pipeline 24 through a row expansion vessel drainage pipe; the fixed row mother pipe heat source 23 provides heat for the fixed row mother pipe, and is connected to the heat source input main pipeline 24 through a fixed row mother pipe.
[0034] The heat source input main pipeline 24 is also connected to the inlet of the fixed row expansion vessel 1.
[0035] The heat source input main pipeline 24 is also provided with a heat source input main pipeline valve 13 . The heat source input main pipeline valve 13 is located between the heat source mechanism 2 and the fixed-discharge expansion vessel 1 and is in a normally closed state.
[0036] The heat of sewage that originally needs to be discharged directly, such as the boiler emergency water discharge heat source 21, the continuous expansion tank heat source 22 and the fixed row mother pipe heat source 23 in the heat source mechanism 2, is reused, which not only realizes heat exchange with the fly ash conveying and storage mechanism 3, but also improves the reuse value of sewage heat; the heat source mechanism 2 includes a variety of heat sources, usually a continuous expansion tank heat source 22 for continuous and stable supply, the boiler emergency water discharge heat source 21 can also be added when the boiler is urgently discharged, and the fixed row mother pipe heat source 23 can be added when the fixed row mother pipe is fixedly discharged, which fully ensures the continuous and stable supply of the heating heat source.
[0037] The fly ash conveying and storage mechanism 3 comprises an ash conveying scraper 31 , an ash chamber 32 , and a bucket elevator 33 . The outer shells of the ash conveying scraper 31 , the ash chamber 32 , and the bucket elevator 33 are all provided with S-shaped coils.
[0038] One end of the S-shaped coils on the ash scraper 31, ash bin 32 and bucket elevator 33 are connected to the heat source input main pipeline 24, and a heat source control valve is provided between one end of the S-shaped coil and the heat source input main pipeline 24. One, two or all of the heat source control valves can be opened according to the needs of the ash scraper 31, ash bin 32 and bucket elevator 33.
[0039] The other ends of the S-shaped coils on the ash conveying scraper 31 , the ash chamber 32 , and the bucket elevator 33 are all connected to the heat source output main pipeline 11 .
[0040] The heat source output main pipeline 11 is connected to the hot water well 4 through the heat source output branch pipeline 12. The heat source output branch pipeline 12 is provided with a branch pipeline control valve, and the branch pipeline control valve is in a normally closed state.
[0041] The heat source output main pipeline 11 is also connected to the heat source input main pipeline 24 through the heat source return pipeline 16. The connection between the heat source return pipeline 16 and the heat source input main pipeline 24 is located between the fixed-discharge expansion tank 1 and the heat source input main pipeline valve 13. A heat source return valve is provided on the heat source return pipeline 16, and the heat source return valve is in a normally open state.
[0042] The outlet of the fixed-discharge expansion tank 1 is connected to a waste heat main pipeline 15, on which a waste heat main pipeline valve and a measuring instrument are provided. The waste heat main pipeline 15 is also connected to a waste heat branch pipeline 14 in parallel with the waste heat pipeline valve and the measuring instrument, on which a waste heat branch pipeline valve is provided. Under normal conditions, the waste heat main pipeline valve provided on the waste heat main pipeline 15 is in an open state, and the pressure and other data of the waste heat are measured by the measuring instrument, at which time the waste heat branch pipeline valve is in a closed state. When there is no need to measure waste heat or the measuring instrument is damaged and needs to be repaired and replaced, the waste heat pipeline valve on the waste heat main pipeline 15 can be closed, and the waste heat branch pipeline valve can be opened to discharge the waste heat source into the hot water well 4.
[0043] The waste incineration fly ash conveying and storage heating device provided in the present application realizes heat exchange between the heating heat source provided by the heat source mechanism 2 and the inside of the fly ash conveying and storage mechanism 3 by arranging an S-shaped coil on the fly ash conveying and storage mechanism 3, and has a good heat exchange effect, thereby ensuring the dryness of the fly ash inside the fly ash conveying and storage mechanism 3, so that the fly ash will not absorb water and corrode the equipment due to moisture; and the fly ash conveying and storage mechanism 3 adopts the heating heat source provided by the heat source mechanism 2 to realize heat exchange, abandons the electric heating method, does not require electricity consumption, and reuses the sewage heat that originally needs to be directly discharged, such as the boiler emergency water discharge heat source 21, the continuous expansion tank heat source 22 and the fixed row mother pipe heat source 23 in the heat source mechanism 2, which not only realizes heat exchange with the fly ash conveying and storage mechanism 3, but also improves the reuse value of the sewage heat; the selection of multiple heat sources in the heat source mechanism 2 ensures the continuous and stable supply of the heating heat source.
[0044] See also Figure 2 In order to prevent impurities in the sewage provided by the heat source mechanism 2 from clogging the S-shaped coil and affecting the heat exchange, a filtering mechanism 5 is provided on the heat source input main pipeline 24 and before the fly ash conveying and storage mechanism 3.
[0045] See also Figure 2 and Figure 3 The filter mechanism 5 is arranged at the connection of two sections of the heat source input main pipeline 24 (which is formed by connecting multiple sections of pipelines), and the filter mechanism 5 is installed on the heat source input main pipeline 24 through a fastening bracket 7.
[0046] Furthermore, the filtering mechanism 5 includes a rotatable rotating disk 51, on which two sewage holes 52 are arranged, and a filter screen is arranged on the sewage holes 52. The filter screen filters larger impurities in the sewage to prevent the sewage entering the S-shaped coil from clogging the coil. A plurality of sewage holes 52 may also be arranged on the rotating disk 51.
[0047] A sealing ring 53 is provided on the inner wall edge of the sewage through hole 52. When two sections of the heat source input main pipeline 24 are connected together, the sealing ring 53 can increase the sealing performance.
[0048] The rotating disk 51 is provided with an axial hole 54 , in which a fixed shaft 6 is inserted, and the fixed shaft 6 is fixed on the fastening bracket 7 .
[0049] When in use, one of the sewage holes 52 with a filter is placed at the connection port of the two sections of the pipe in the heat source input main pipeline 24. When the two sections of the pipe are butt-connected, the sealing ring 53 is deformed to increase its sealing performance. The filter at the sewage hole 52 can filter the sewage. When the filter needs to be replaced, the ports of the two sections of the pipe are disassembled, and the other sewage hole 52 is rotated to the place, and then the sealing connection is performed. At this time, the replaced sewage hole 52 can be displayed and cleaned by replacing the filter or impacting the filter, etc., to prepare for subsequent replacement. The working efficiency of the heat exchange is improved, and the work process will not be delayed due to clearing the filter or removing the filter. When not in use, the exposed sewage hole 52 can also be covered with a cover to ensure its cleanliness.
[0050] The filtering device 5 only needs to be arranged at the connection between two sections of the pipeline, and there is no need to cut the pipeline separately.
[0051] The waste incineration fly ash conveying and storage heating device provided in the present application has good heat exchange effect, ensures the dryness of the fly ash inside the fly ash conveying and storage mechanism, and prevents the fly ash from absorbing water and corroding the equipment due to moisture; abandons the electric heating method, does not require electricity consumption, and reuses the sewage heat that would otherwise be directly discharged by the heat source mechanism, not only realizes heat exchange with the fly ash conveying and storage mechanism, but also improves the reuse value of the sewage heat; and ensures a continuous and stable supply of heating heat sources.
[0052] In the description of the present application, it should be understood that terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", 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 the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0054] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A waste incineration fly ash conveying, storage and heating device, comprising a fly ash conveying and storage mechanism, wherein the fly ash conveying and storage mechanism is used to convey and store fly ash generated after waste incineration, and is characterized in that: It also includes fixed row expansion vessels, heat source mechanisms and hot water wells; One end of the heat source mechanism is connected to the fixed row expansion tank, and the other end of the heat source mechanism passes through the fly ash conveying and storage mechanism and is respectively connected to the fixed row expansion tank and the hot water well, and the fixed row expansion tank is also connected to the hot water well; The heat source mechanism includes a boiler emergency water discharge heat source, a row expansion tank heat source and a fixed row mother pipe heat source.
2. A waste incineration fly ash transportation, storage and heating device as claimed in claim 1, characterized in that: The boiler emergency water discharge heat source is the heat provided by boiler drainage, and the boiler emergency water discharge heat source is connected to the heat source input main pipeline through the boiler drainage pipe; The heat source of the continuous expansion tank is the heat provided by the continuous expansion tank, and the heat source of the continuous expansion tank is connected to the heat source input main pipeline through the continuous expansion tank drainage pipe; The fixed row mother pipe heat source is heat provided by the fixed row mother pipes, and the fixed row mother pipe heat source is connected to the heat source input main pipeline through the fixed row mother pipes.
3. A waste incineration fly ash transportation, storage and heating device as claimed in claim 2, characterized in that: The heat source input main pipeline is also connected to the inlet of the fixed row expansion container; The heat source input main pipeline is also provided with a heat source input main pipeline valve, which is located between the heat source mechanism and the fixed-discharge expansion tank and is in a normally closed state.
4. The waste incineration fly ash transportation, storage and heating device according to claim 1, characterized in that: The fly ash conveying and storage mechanism comprises an ash conveying scraper, an ash cabin, and a bucket elevator, and the ash conveying scraper, the ash cabin, and the bucket elevator are all provided with S-shaped coils; One end of the S-shaped coils on the ash conveying scraper, ash chamber and bucket elevator is connected to a heat source input main pipeline, and the other end of the S-shaped coils on the ash conveying scraper, ash chamber and bucket elevator is connected to a heat source output main pipeline.
5. A waste incineration fly ash transportation, storage and heating device as claimed in claim 4, characterized in that: A heat source control valve is arranged between one end of the S-shaped coil on the ash conveying scraper, the ash cabin and the bucket elevator and the heat source input main pipeline.
6. A waste incineration fly ash transportation, storage and heating device as claimed in claim 4, characterized in that: The heat source output main pipeline is connected to the hot water well through a heat source output branch pipeline. A branch pipeline control valve is provided on the heat source output branch pipeline, and the branch pipeline control valve is in a normally closed state.
7. The waste incineration fly ash transportation, storage and heating device as claimed in claim 4, characterized in that: The heat source output main pipeline is connected to the heat source input main pipeline through a heat source return pipeline, and a heat source return valve is provided on the heat source return pipeline, and the heat source return valve is in a normally open state.
8. The waste incineration fly ash transportation, storage and heating device as claimed in claim 4, characterized in that: The outlet of the fixed-discharge expansion vessel is connected to a waste heat main pipeline, and a waste heat main pipeline valve and a measuring instrument are arranged on the waste heat main pipeline; The waste heat main pipeline is also connected to a waste heat branch pipeline connected in parallel with the waste heat pipeline valve and the measuring instrument, and the waste heat branch pipeline is provided with a waste heat branch pipeline valve.
9. The waste incineration fly ash transportation, storage and heating device as claimed in claim 2, characterized in that: A filtering mechanism is arranged on the heat source input main pipeline and in front of the fly ash conveying and storage mechanism. The filtering mechanism is installed on the heat source input main pipeline through a fastening bracket.
10. A waste incineration fly ash transportation, storage and heating device as claimed in claim 9, characterized in that: The filtering mechanism comprises a rotatable rotating disk, the rotating disk is provided with two sewage through holes, and the sewage through holes are provided with a filter screen; The rotating disk is provided with an axial hole, a fixed shaft is inserted into the axial hole, and the fixed shaft is fixed on the fastening bracket.