A feeding system and a waste incineration system

Abstract

This invention discloses a feeding system and a waste incineration system. The feeding system includes: a transportation system, comprising at least two transportation systems, each including a feeding component and a transfer device. The discharge port of the feeding component faces the transfer device, which is used to transfer and convey materials within the feeding component; and a material distribution system, including a feeding hopper for receiving materials transferred and conveyed by the transfer device. The feeding system provided by this invention utilizes at least two transportation systems for material transfer, and each system can operate independently without affecting the others. This avoids situations where equipment failure leads to the feeding system's inability to function, thus improving the stability of the feeding system. Furthermore, the material transfer via the feeding component and transfer device solves the problem of not being able to directly feed materials using conventional grate furnace waste grabs, thereby improving the applicability of the feeding system.

Description

Technical Field

[0001] This invention relates to the field of waste incineration technology, and more specifically, to a feeding system and a waste incineration system. Background Technology

[0002] Circulating fluidized bed waste incineration faces problems such as low power generation efficiency and high equipment failure rate, resulting in insufficient waste treatment capacity. To address these issues, grate furnaces, which offer more stable operation, lower economic costs, and higher incineration efficiency, are generally adopted. There are typically three ways to convert to a grate furnace mode: the first is by adding an extension, but this is rarely used due to site constraints; the second is direct feeding, but this requires dismantling the existing feeding structure, which is technically challenging and has poor safety and stability; the third is transfer feeding, where the distance between the waste pit and the furnace feed hopper is relatively long, requiring waste to be transferred from the waste pit to the furnace feed hopper before incineration.

[0003] In existing technologies, the conventional method of conversion to a transfer-feed system is generally used, which has the advantages of low economic cost and high transfer efficiency. However, due to the limited particle size of feed material in circulating fluidized bed waste incinerators, municipal solid waste generally needs to be screened, crushed, and then transferred to the inlet hopper. Furthermore, some waste is mixed with raw coal, requiring the design of facilities such as raw coal silos. This means that the transfer-feed system cannot use the conventional grate furnace waste grab bucket for direct feeding, resulting in poor applicability of the feeding system. Additionally, when equipment malfunctions, the converted feeding system cannot operate normally, leading to poor stability.

[0004] In addition, the transfer and feeding method makes it difficult to ensure the uniformity of material distribution in the feed hopper before the furnace, which can cause uneven burning in the incinerator, resulting in incomplete waste incineration and consequently low power generation efficiency.

[0005] Therefore, how to improve the stability of the feeding system has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a feeding system to improve the stability of the feeding system.

[0007] Another object of the present invention is to provide a waste incineration system having the above-mentioned feeding system.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A feeding system, comprising:

[0010] A transportation system, comprising at least two systems, each system including a feeding assembly and a transfer device, wherein the discharge port of the feeding assembly is disposed facing the transfer device, and the transfer device is used to transfer and convey the material within the feeding assembly;

[0011] A fabric feeding system includes a feed hopper for receiving materials transferred and conveyed by the transfer device.

[0012] Optionally, in the above-mentioned feeding system, the feeding component includes a feeding hopper and a discharging device. The discharge port of the feeding component is located on the discharging device, and a transition discharge pipe is provided between the feeding hopper and the discharging device. The feeding hopper is connected to the feeding port of the discharging device through the transition discharge pipe.

[0013] Optionally, in the above-mentioned feeding system, a chute is provided at the discharge port of the discharge device, and a guide chute is provided on the transfer device. The chute and the guide chute of the transfer device cooperate to discharge the material in the feeding assembly onto the transfer device.

[0014] Optionally, in the above-mentioned feeding system, the unloading device is a shaftless screw conveyor, and the transfer device is a feeding conveyor belt.

[0015] Optionally, in the above-mentioned feeding system, both the shaftless screw conveyor and the feeding conveyor belt are frequency converter controlled.

[0016] Optionally, in the above-mentioned feeding system, the material distribution system further includes a material distribution device. When one of the transport systems stops working and the remaining transport systems are working normally, the material distribution device is located between the transport system and the feed hopper, and is used to change the position of the material entering the feed hopper.

[0017] Optionally, in the above-described feeding system, the fabric feeding device is provided with a movable component, which is used to move the fabric feeding device.

[0018] Optionally, in the above-mentioned feeding system, the material distribution device is a reciprocating material distribution machine.

[0019] Optionally, in the above-mentioned feeding system, an adjusting baffle is provided between the transfer device and the feeding hopper, and the adjusting baffle is used to change the position of the material entering the feeding hopper.

[0020] A waste incineration system includes a feeding system, said feeding system being the feeding system described in any of the preceding claims.

[0021] The feeding system provided by this invention uses at least two transport systems to transfer and transport materials. Each transport system includes a feeding component and a transfer device, which transfers the materials to the feeding hopper in the fabric distribution system for subsequent processing. Each transport system can operate independently without affecting the others. If either transport system malfunctions and stops working, the other transport system can continue to transfer and transport materials.

[0022] Compared with existing technologies, the feeding system provided by this invention uses at least two transport systems to transfer and transport materials, and each transport system can operate independently without affecting the others. This avoids situations where the feeding system cannot function due to equipment failure, thus improving the stability of the feeding system. Simultaneously, by using a feeding assembly and a transfer device to transfer materials, the problem of not being able to directly feed materials using conventional grate furnace waste grabs is solved, thereby improving the applicability of the feeding system. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the first working condition of the feeding system provided in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the second working condition of the feeding system provided in an embodiment of the present invention.

[0026] Among them, 100 is a garbage grab bucket, 101 is a feeding hopper, 102 is a dumping device, 103 is a transfer device, 104 is an adjusting baffle, 105 is a material distribution device, 106 is a moving part, 107 is a feeding hopper, and 200 is a garbage pit. Detailed Implementation

[0027] The core of this invention is to provide a feeding system to improve the stability of the feeding system.

[0028] Another core aspect of this invention is to provide a waste incineration system having the aforementioned feeding system.

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] like Figure 1 and Figure 2 As shown in the figure, this invention discloses a feeding system, including a transport system and a material distribution system. It should be noted that in the prior art, the conversion to a grate furnace mode generally adopts a transfer feeding method, which has the advantages of low economic cost and high transfer efficiency. However, due to the limited particle size of the feed material in a circulating fluidized bed waste incinerator, municipal solid waste generally needs to be screened and crushed before being transferred to the inlet hopper. Furthermore, some waste contains co-fired coal, requiring the design of facilities such as a coal silo. This means that the transfer feeding method cannot use the conventional grate furnace waste grab bucket for direct feeding, resulting in poor applicability of the feeding system. Simultaneously, when the modified feeding system malfunctions, it cannot operate normally, leading to poor stability. In addition, the transfer feeding method makes it difficult to ensure uniform material distribution in the inlet hopper, causing uneven burning within the incinerator, resulting in incomplete waste combustion and consequently low power generation efficiency. The feeding system disclosed in this invention uses at least two transport systems to transfer and transport materials, each of which can operate independently without affecting the others. This avoids situations where the feeding system cannot function due to equipment failure, thus improving the stability of the feeding system. Simultaneously, the material transfer via the feeding assembly and the transfer device 103 solves the problem of not being able to directly feed materials using conventional grate furnace garbage grab buckets, thereby improving the applicability of the feeding system. Furthermore, by incorporating the material distribution device 105 and the adjusting baffle 104, the uniformity of material within the feeding hopper 107 is improved, allowing for more complete garbage incineration and thus increasing power generation efficiency.

[0031] The system comprises at least two transport systems, each including a feeding component and a transfer device 103. The outlet of the feeding component faces the transfer device 103, which is used to transfer the material from the feeding component to the feeding system. Specifically, in this embodiment, there are two transport systems, which are defined as the first transport system and the second transport system for ease of understanding. The first and second transport systems can operate independently without affecting each other. Each transport system is equipped with a feeding component and a transfer device 103, ensuring that a failure in one transport system will not affect the normal operation of the other. When the first transport system fails, the material can be transported through the second transport system, and vice versa. This avoids the situation where a failure in the equipment causes the feeding system to malfunction, thus improving the stability of the feeding system. Simultaneously, the material is discharged onto the transfer device 103 via the feeding assembly, and then transferred to the material distribution system via the transfer device 103. This solves the problem of not being able to directly feed the waste using conventional grate furnace grab buckets, thereby improving the applicability of the feeding system. Of course, the transportation system is not limited to two systems; it can also include three, four, etc. Those skilled in the art will understand that the more transportation systems there are, the higher the transfer efficiency, but the greater the energy consumption and cost; conversely, the fewer transportation systems there are, the lower the transfer efficiency, but the lower the energy consumption and cost. Different numbers of transportation systems can be selected for different technical fields to meet actual needs. In this embodiment, using two transportation systems can meet the material transfer efficiency requirements for waste incineration, with lower energy consumption and lower cost.

[0032] Furthermore, the feeding system includes a feed hopper 107, which receives materials transferred and conveyed by the transfer device 103. The feed hopper 107 has a large-diameter end and a small-diameter end. The large-diameter end receives the materials transferred and conveyed by the transfer device 103, at which point some of the material falls onto the inclined surface of the feed hopper 107 to buffer the material. Of course, the feeding system can be applied not only to waste incineration but also to other fields, such as power generation, coal, cement, steel, or grain. The following explanations will focus on the application of the feeding system in waste incineration; applications in other fields will not be discussed further here.

[0033] The material feeding system provided by this invention uses at least two transport systems to transfer and transport materials. Each transport system includes a feeding component and a transfer device 103. The transfer device 103 transfers and transports the materials to the feeding hopper 107 in the fabric distribution system for subsequent processing. Each transport system can operate independently without affecting the others. If either transport system malfunctions and stops working, the other transport system can continue to transfer and transport materials.

[0034] Compared with existing technologies, the feeding system provided by this invention uses at least two transport systems to transfer and transport materials, and each transport system can operate independently without affecting the others. This avoids situations where the feeding system cannot function due to equipment failure, thus improving the stability of the feeding system. Simultaneously, by using the feeding assembly and the transfer device 103 to transfer materials, the problem of not being able to directly feed materials using conventional grate furnace waste grabs is solved, thereby improving the applicability of the feeding system.

[0035] Furthermore, such as Figure 1 and Figure 2 As shown, in one specific embodiment, the feeding assembly includes a feeding hopper 101 and a discharging device 102. The discharge port of the feeding assembly is located on the discharging device 102, and a transition discharge pipe is provided between the feeding hopper 101 and the discharging device 102. The feeding hopper 101 is connected to the feeding port of the discharging device 102 through the transition discharge pipe. A chute is provided at the discharge port of the discharging device 102, and a guide chute is provided on the transfer device 103. The chute and the guide chute of the transfer device 103 cooperate to discharge the material in the feeding assembly onto the transfer device 103. Specifically, the discharging device 102 is a shaftless screw conveyor, and the transfer device 103 is a feeding conveyor belt. Both the shaftless screw conveyor and the feeding conveyor belt are frequency converters, allowing adjustment of the speeds of the discharging device 102 and the transfer device 103, thereby adjusting their power output. When the garbage grabber 100 picks up the garbage from the garbage pit 200 and places it into the feeding hopper 101, the garbage enters the feed inlet of the discharge device 102 through the transition discharge pipe, and slides into the guide chute of the transfer device 103 through the chute set at the discharge outlet of the discharge device 102, and falls onto the transfer device 103. Under the condition that the power output of the discharge device 102 is constant, that is, the power output of the shaftless screw conveyor is constant, the speed of the transfer device 103 can be adjusted, that is, the speed of the feeding conveyor belt can be adjusted, thereby adjusting the thickness of the material falling onto the transfer device 103, making the material falling onto the transfer device 103 more uniform, and thus improving the uniformity of the material distribution.

[0036] Furthermore, such as Figure 2As shown, in one specific embodiment, the material distribution system further includes a material distribution device 105. When one part of the transport system stops working and the remaining transport system operates normally, the material distribution device 105 is located between the transport system and the feed hopper 107 to change the position where material enters the feed hopper 107. The material distribution device 105 is provided with a movable component 106, which is used to move the material distribution device 105 out of the area between the transport system and the feed hopper 107 when it is not needed, to avoid interfering with the normal operation of the transport system. Specifically, the material distribution device 105 is a reciprocating material distribution machine, which can operate along the long side of the feed hopper 107 (…). Figure 2 The feeding device 105 is moved (from the perspective of the feed hopper 107) to achieve uniform material distribution, thereby ensuring more complete waste incineration and improving power generation efficiency. When the feeding device 105 is not needed, it can be moved along the short side of the feed hopper 107 via the moving part 106. Figure 2 (View) Move out of the area between the transport system and the feed hopper 107. It should be noted that when the transport system is working normally, the material distribution device 105 is not required.

[0037] Furthermore, such as Figure 1 and Figure 2 As shown, an adjusting baffle 104 is provided between the transfer device 103 and the feed hopper 107. The adjusting baffle 104 can change the position of the material entering the feed hopper 107. Specifically, the adjusting baffle 104 is an electrically adjustable baffle, and its tilt angle can be adjusted according to the scattering position of the transfer device 103 and the accumulation of material in the feed hopper 107, thereby adjusting the material distribution position and effectively improving the uniformity of material distribution.

[0038] In one specific embodiment, when there are two transport systems, and the first transport system malfunctions and cannot function properly, the fabric distribution device 105 is moved via the movable component 106 to a position between the transport system and the feed hopper 107, along the long side direction of the feed hopper 107. Figure 2 (From a perspective) the moving material distribution device 105 is used to prevent garbage from accumulating in the feed hopper 107, thus achieving uniform material distribution. Specifically, the garbage grab 100 grabs garbage from the garbage pool 200 and places it into the feeding component of the second transport system, and the garbage is transferred to the material distribution device 105 by the transfer device 103 of the second transport system. The material distribution device 105 transports the garbage into the feed hopper 107. When garbage is about to accumulate in the feed hopper 107, the inclination angle of the adjusting baffle 104 can be adjusted, and at the same time, the material distribution device 105 distributes the garbage along the long side of the feed hopper 107. Figure 2 The feed device 105 is moved (viewpoint) to prevent waste from accumulating in the feed hopper 107, thereby achieving uniform material distribution. When the second transport system malfunctions and cannot operate normally, the feed device 105 is moved between the transport system and the feed hopper 107 via the moving part 106, and along the long side of the feed hopper 107 (viewpoint). Figure 2 (From a certain perspective) The fabric spreading device 105 is moved to prevent waste from accumulating in the feed hopper 107, thus achieving uniform fabric spreading. The specific implementation method is similar to that when the first transport system malfunctions, and will not be described in detail here. Of course, there can also be three or four transport systems, etc. When one of the transport systems malfunctions, it will cause uneven fabric spreading. At this time, the fabric spreading device 105 can be moved between the transport system and the feed hopper 107, and along the long side of the feed hopper 107 (from a certain perspective). Figure 2 (From a certain perspective) the moving cloth-laying device 105 is used to prevent waste from accumulating in the feed hopper 107, thus achieving uniform cloth distribution. It should be noted that the moving component 106 can be a track mounted on the cloth-laying device 105, or wheels mounted on both sides of the cloth-laying device 105, so that the cloth-laying device 105 moves along the short side of the feed hopper 107 (from a certain perspective). Figure 2 (Viewpoint) movement.

[0039] Furthermore, in the feeding system, when a single transport system is working, it takes 1.5 hours to meet the material feeding requirements, and the amount of waste stored in the feed hopper 107 can generally meet the waste consumption of the incinerator for 2 hours. In order to avoid frequent start-ups and shutdowns of the feeding system, which could lead to equipment failure, the power output of the unloading device 102 and the transfer device 103 in the transport system can be reduced, and the operation mode of the feeding system can be adjusted to continuous operation mode, thereby reducing the equipment failure rate.

[0040] like Figure 1 As shown, in another specific embodiment, when the transportation system is working normally, the garbage grab 100 grabs the garbage from the garbage pool 200 and puts it into the feeding component of the transportation system. The garbage is then transferred to the feeding hopper 107 by the transfer device 103 of the transportation system. When the garbage in the feeding hopper 107 is about to accumulate, the tilt angle of the adjusting baffle 104 can be adjusted to prevent the garbage in the feeding hopper 107 from accumulating, thereby achieving the purpose of uniform material distribution.

[0041] Furthermore, in the feeding system, when there are two transport systems, and both are operating normally, the material feeding requirement can be met in 0.5 hours. The amount of waste stored in the feed hopper 107 is generally sufficient to meet the waste consumption of the incinerator for 2 hours. Therefore, when the incinerator operates for 2 hours, the feeding system only needs to operate for 0.5 hours. Moreover, the feeding system operates intermittently. Compared to a single transport system, using two transport systems operating simultaneously reduces the operating time of the feeding system, thereby reducing equipment failure rates and ultimately lowering equipment investment costs.

[0042] It should be noted that, due to the complex composition of domestic waste, equipment failures are prone to occur during the transfer process. Those skilled in the art will understand that each additional transfer point will add a potential point of failure. Therefore, the feeding system disclosed in this embodiment of the invention reduces the risk of equipment failure by reducing the number of transfers. The feeding system can meet the material feeding needs with only one transfer by the transfer device 103, minimizing the number of transfers and the number of devices, thereby reducing the equipment failure rate and the equipment investment cost.

[0043] The feeding system disclosed in this invention can be applied to scenarios requiring material transfer, such as municipal solid waste incineration power plants, especially in scenarios where circulating fluidized bed waste incinerators are upgraded to grate furnaces. Of course, it can also be applied to material transfer systems in industries such as power, coal, cement, steel, and grain. As long as the feeding system disclosed in this invention is used, it is within the protection scope of this application.

[0044] This invention also discloses a waste incineration system, including a feeding system. This feeding system is the same as the feeding system disclosed in the above embodiments, and therefore has all the technical effects of the above feeding systems. It will not be described again here.

[0045] The terms "first" and "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A feeding system, characterized in that, include: The transportation system comprises at least two components, each including a feeding component and a transfer device (103). The discharge port of the feeding component is positioned facing the transfer device (103), which is used to transfer and transport the material within the feeding component. Each transportation system can operate independently without affecting the others, thus avoiding the situation where the feeding system cannot work due to equipment failure. The fabric feeding system includes a feed hopper (107) for receiving materials transferred and conveyed by the transfer device (103); The fabric distribution system also includes a fabric distribution device (105). When one of the transport systems stops working and the remaining transport systems are working normally, the fabric distribution device (105) is located between the transport system and the feed hopper (107) to change the position of the material entering the feed hopper (107). The fabric distribution device (105) is provided with a movable part (106) for moving the fabric distribution device (105).

2. The feeding system according to claim 1, characterized in that, The feeding assembly includes a feeding hopper (101) and a discharging device (102). The discharge port of the feeding assembly is located on the discharging device (102), and a transition discharge pipe is provided between the feeding hopper (101) and the discharging device (102). The feeding hopper (101) is connected to the feeding port of the discharging device (102) through the transition discharge pipe.

3. The feeding system according to claim 2, characterized in that, The discharge port of the feeding device (102) is provided with a chute, and the transfer device (103) is provided with a guide chute. The chute and the guide chute of the transfer device (103) cooperate to discharge the material in the feeding assembly onto the transfer device (103).

4. The feeding system according to claim 2, characterized in that, The unloading device (102) is a shaftless screw conveyor, and the transfer device (103) is a feeding conveyor belt.

5. The feeding system according to claim 4, characterized in that, Both the shaftless screw conveyor and the feeding conveyor belt are frequency converter controlled.

6. The feeding system according to claim 1, characterized in that, The fabric spreading device (105) is a reciprocating fabric spreading machine.

7. The feeding system according to claim 1, characterized in that, An adjusting baffle (104) is provided between the transfer device (103) and the feed hopper (107), and the adjusting baffle (104) is used to change the position of the material entering the feed hopper (107).

8. A waste incineration system, comprising a feeding system, characterized in that, The feeding system is the feeding system as described in any one of claims 1-7.

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