Sludge coupling incineration storage and transportation system

Abstract

The utility model provides a kind of sludge coupling incineration storage and transportation system, including movable load mechanism, the vertical scraper of being connected by receiving hopper and movable load mechanism, the top of sludge storage bin is connected by pipeline with the upper end of vertical scraper, the discharge end of vertical scraper is also provided with the belt conveyor for realizing the convergence of boiler front coal bunker. The utility model is by high silo form, vertically integrates in receiving area directly above storage space, significantly saves the plane land occupation, substantially improves space utilization, especially suitable for space limited site. At the same time, scraper and bunker are combined, by circulating disturbance sludge in bin, prevent sludge from hardening due to long-term standing, ensure that continuous, stable feeding into boiler. The system also realizes sludge storage, transfer whole process airtight, effectively cure the problem of odor overflow and dust leakage, prevent environmental pollution, strong practicality.

Description

Technical Field

[0001] This utility model belongs to the field of sludge treatment technology, specifically relating to a sludge coupled incineration, storage and transportation system. Background Technology

[0002] Co-firing sludge refers to the technology of pre-treating sludge generated during wastewater treatment, uniformly mixing it with coal, and then co-firing it in a coal-fired power plant boiler. Currently, there are two main forms of sludge co-firing in coal-fired power plants: one is direct co-firing based on sludge moisture content, where sludge with approximately 80% moisture content is typically pumped, while sludge with approximately 60% moisture content is conveyed using a scraper conveyor; the other is co-firing after sludge drying, where the sludge is first dried before being mixed with coal and incinerated together. This method has a relatively smaller impact on furnace temperature. However, existing co-firing processes have many problems. For example, because coal-fired power plants generally operate intermittently, with a feeding cycle typically every 4-6 hours, and because the sludge needs to be fed synchronously with the coal, the sludge needs to be statically stored in the silo for a relatively long time. Especially during temporary boiler shutdowns for maintenance, the sludge's tendency to ferment and caking, coupled with prolonged static storage, easily leads to sludge compaction, severely impacting subsequent discharge. Furthermore, the storage and transfer of dried sludge poses a risk of odor leakage and dust spillage, negatively impacting the surrounding environment. Therefore, effectively addressing the aforementioned technical problems arising from the co-firing of sludge is a pressing issue that needs to be resolved. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a sludge coupled incineration storage and transportation system.

[0004] The objective of this utility model is achieved through the following technical solution: A sludge coupled incineration and storage system includes a mobile loading mechanism and a vertical scraper conveyor connected to the mobile loading mechanism via a receiving hopper. The upper end of the vertical scraper conveyor is connected to the top of the sludge storage silo via a pipe. The discharge end of the vertical scraper conveyor is also equipped with a belt conveyor for connecting to the coal bunker in front of the boiler.

[0005] Preferably, the pipeline is equipped with an electric slide gate valve.

[0006] Preferably, the lower end of the sludge storage silo is connected to the lower part of the vertical scraper conveyor via a connecting pipe, and a star-shaped ash discharge valve is installed on the connecting pipe.

[0007] Preferably, the mobile material loading mechanism includes a mobile trailer and a spiral hopper placed on the mobile trailer.

[0008] Preferably, the discharge end of the spiral hopper is connected to the vertical scraper conveyor for unloading via a receiving hopper.

[0009] The beneficial effects of this utility model are as follows: By using a high-level silo, the storage space is vertically integrated directly above the receiving area, significantly saving floor space and greatly improving space utilization, making it particularly suitable for space-constrained sites. Simultaneously, the scraper conveyor combined with the silo circulates and agitates the sludge within, preventing it from hardening and compacting due to prolonged stagnation, ensuring a continuous and stable supply of sludge fuel to the boiler. This system also achieves fully enclosed sludge storage and transfer, effectively eliminating odor overflow and dust leakage problems, greatly improving the working environment, preventing environmental pollution, and demonstrating strong practicality. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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 based on these drawings without creative effort.

[0011] Figure 1 : Schematic diagram of the connection structure of this utility model. Detailed Implementation

[0012] This utility model discloses a sludge coupled incineration storage and transportation system, combining... Figure 1 As shown, the system includes a mobile material loading mechanism and a vertical scraper conveyor 4 connected to the mobile material loading mechanism via a receiving hopper 3. The upper end of the vertical scraper conveyor 4 is connected to the top of the sludge storage silo 5 via a pipe 9. An electric slide valve 7 is installed on the pipe 9, and the opening and closing of the pipe can be achieved by controlling the opening and closing of the electric slide valve 7. The discharge end of the vertical scraper conveyor 4 is also equipped with a belt conveyor 8 for connecting to the coal bunker in front of the boiler. The sludge storage silo 5 is a high-level silo, and the top of the vertical scraper conveyor 4 is higher than the top of the sludge storage silo 5.

[0013] The vertical scraper conveyor 4 is positioned longitudinally, which occupies less floor space compared to the existing transverse design. In this invention, the sludge storage silo 5 is integrated with the vertical scraper conveyor 4, forming a high-level silo that vertically integrates the storage space directly above the receiving area, significantly saving floor space and greatly improving space utilization, making it particularly suitable for space-constrained sites. Simultaneously, the combination of the scraper conveyor and the silo, through the activation of corresponding valves, enables the internal sludge to achieve self-circulation and prevent caking. By circulating and agitating the sludge within the silo, hardening due to prolonged static storage is prevented, ensuring a continuous and stable supply to the boiler.

[0014] The mobile loading mechanism includes a mobile trailer 1 and a spiral hopper 2 mounted on the mobile trailer 1. The discharge end of the spiral hopper 2 is connected to the vertical scraper conveyor 4 via a receiving hopper 3 for unloading. Sludge is transported to the vertical scraper conveyor 4 via the mobile loading mechanism, and unloading begins once the discharge port of the spiral hopper 2 is aligned with the receiving hopper 3. The lower end of the sludge storage hopper 5 is connected to the lower part of the vertical scraper conveyor 4 via a connecting pipe, on which a star-shaped ash discharge valve 6 is installed. The connection end of the connecting pipe to the vertical scraper conveyor 4 is located behind the receiving hopper 3.

[0015] By utilizing the integrated sealed design of the closed inlet and outlet pipelines and silos of this system, the entire process of sludge storage and transfer is completely sealed, effectively eliminating the problems of odor overflow and dust leakage, and preventing environmental pollution.

[0016] The system of this invention can realize multiple modes of sludge receiving and storage, specifically: Sludge Receiving and Direct Furnace Feeding Mode: First, both the rotary valve 6 and the electric slide gate valve 7 are closed. The trailer 1 carrying sludge and its spiral hopper 2 transport the sludge to the receiving point, aligning the discharge port of the spiral hopper 2 with the receiving hopper 3. Then, the power plant coal conveyor belt 8 and the vertical scraper conveyor 4 are started sequentially. After the equipment is running normally, the discharge port of the spiral hopper 2 is opened and its internal unloading spiral is started. At this time, the sludge is discharged from the spiral hopper 2, falls into the receiving hopper 3, and directly enters the vertical scraper conveyor 4 below; after being lifted and conveyed by the vertical scraper conveyor 4, it falls into the power plant coal conveyor belt 8, and finally enters the boiler's front coal bunker.

[0017] Sludge receiving and storage mode: The rotary valve 6 is closed, while the electric slide gate valve 7 is open. The trailer 1 carrying sludge and its screw conveyor 2 are transported to the receiving point, and the outlet of the screw conveyor 2 is aligned with the receiving hopper 3. The vertical scraper conveyor 4 is then started. Once the equipment is running normally, the outlet of the screw conveyor 2 is opened, and its internal unloading screw is activated. The sludge is then discharged from the screw conveyor 2, falling into the receiving hopper 3 and directly into the vertical scraper conveyor 4 below. After being lifted and conveyed by the vertical scraper conveyor 4, the sludge falls into the sludge storage hopper 5 through the bypass located at the open electric slide gate valve 7 for storage.

[0018] Self-circulation mode within the sludge storage silo: Both the rotary valve 6 and the electric slide gate valve 7 are open. Start the vertical scraper conveyor 4. After the equipment is running normally, open the rotary valve 6. At this time, the sludge in the sludge storage silo 5 falls into the vertical scraper conveyor 4 below through the open rotary valve 6. After being lifted and conveyed by the vertical scraper conveyor 4, it falls back into the sludge storage silo 5 through the bypass where the open electric slide gate valve 7 is located, thus achieving circulation. The circulation frequency can be adjusted according to the storage time to prevent sludge fermentation and caking.

[0019] Sludge storage silo discharge-to-furnace mode: First, the electric slide gate valve 7 must be closed to block the bypass return to the silo. Then, start the belt conveyor 8 and vertical scraper conveyor 4 sequentially. After the equipment is running normally, open the rotary valve 6. At this time, the sludge in the sludge storage silo 5 falls through the open rotary valve 6 into the vertical scraper conveyor 4 below. After being lifted and conveyed by the vertical scraper conveyor 4, it cannot enter the bypass due to the closed electric slide gate valve 7, and will fall into the power plant coal conveyor 8, finally entering the boiler's front coal bunker.

[0020] Finally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] Furthermore, the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it; although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sludge coupled incineration, storage, and transportation system, characterized in that: It includes a mobile material loading mechanism and a vertical scraper conveyor (4) connected to the mobile material loading mechanism via a receiving hopper (3). The upper end of the vertical scraper conveyor (4) is connected to the top of the sludge storage silo (5) via a pipe (9). The discharge end of the vertical scraper conveyor (4) is also equipped with a belt conveyor (8) for connecting with the coal bunker in front of the boiler.

2. The sludge coupled incineration and storage system as described in claim 1, characterized in that: An electric slide gate valve (7) is installed on the pipeline (9).

3. The sludge coupled incineration and storage system as described in claim 2, characterized in that: The lower end of the sludge storage silo (5) is connected to the lower part of the vertical scraper conveyor (4) via a connecting pipe, and a star-shaped ash discharge valve (6) is provided on the connecting pipe.

4. The sludge coupled incineration and storage system as described in claim 3, characterized in that: The mobile material loading mechanism includes a mobile trailer (1) and a spiral hopper (2) placed on the mobile trailer (1).

5. The sludge coupled incineration and storage system as described in claim 4, characterized in that: The discharge end of the spiral hopper (2) is connected to the vertical scraper conveyor (4) for unloading through the receiving hopper (3).

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