Active coke powder carbon rescreening device
By designing an activated coke powder re-sieve device in the activated coke desulfurization and denitrification technology, the larger activated coke particles in the powder are screened out, which solves the problems of resource waste and increased operating costs, and achieves efficient recycling of resources and reduces operating costs.
Patent Information
- Application Number
- CN202421184697.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-28
AI Technical Summary
In the dry active coke desulfurization and denitrification technology, active coke particles splash due to gravity and collision during the process of receiving and blanking, resulting in larger particles being mixed into the powder, causing waste of resources and increasing operating costs.
A re-sieve device for activated coke powder charcoal is designed. By setting up a re-sieve bypass and vibrating screen in the original powder charcoal collection system, the larger active coke particles in the powder charcoal are screened out and returned to the chain fighter for reuse.
Through the application of the resieving device, the larger active coke particles in the pulverized carbon are effectively separated, which reduces resource waste, reduces catalyst loss, reduces operating costs, and improves the conveying convenience and combustion efficiency of the pulverized carbon.
Smart Images
Figure CN222551352U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of dry activated coke desulfurization and denitrification, and in particular relates to an activated coke powder re-screening device. Background Art
[0002] The dry activated coke desulfurization and denitrification technology uses columnar activated coke particles as catalysts. During the catalyst transportation and transfer process, a small amount of dust will be generated when receiving and dropping the material, which will be collected by the dust removal system. At the same time, part of the activated coke is broken into powder due to collision and friction, which cannot meet the process requirements. Part of it is screened out by the vibrating screen under the analysis tower to separate the powder and the smoke and wind dust adsorbed in the pores of the activated coke, and part of it is scraped out and collected by the scraper equipped with the chain bucket conveyor. The above three parts of materials are collectively called activated coke powder, which are collected and returned to the original production system for recycling as fuel.
[0003] During the material receiving and dropping process of each chain bucket conveyor in the activated coke desulfurization and denitrification device, the activated coke will be splashed to a certain extent due to gravity and collision. The splashed activated coke particles will fall into the lower scraper conveyor and be mixed into the pulverized coal. In addition, due to the screening efficiency or equipment failure of the vibrating screen under the analysis tower, a small amount of activated coke particles will be mixed into the pulverized coal.
[0004] These larger particles of activated coke can still be used as catalysts. If they are treated together with pulverized carbon as a cheap fuel, it will not only cause a waste of resources but also increase operating costs. Utility Model Content
[0005] In order to solve the problems existing in the above-mentioned background technology, the utility model provides an activated coke powder re-screening device, which is used to screen out larger particles of activated coke contained in the powdered carbon for recycling and reuse, thereby reducing resource waste.
[0006] The technical solution adopted by the utility model to solve its technical problems is:
[0007] An activated coke powder re-screening device comprises a re-screening bypass connected between a combined ash bin and a large ash bin in a powdered carbon collection system of an original activated coke desulfurization and denitrification device, a vibrating screen is connected to the end of the re-screening bypass, and a plug-in regulating valve is provided on the re-screening bypass to adjust the amount of powdered carbon discharged from the combined ash bin into the vibrating screen; a powdered carbon screen lower interface and a granular carbon discharge port are respectively provided at the bottom of the vibrating screen, wherein the powdered carbon screen lower interface is connected to the large ash bin through a powdered carbon discharge pipe, and the granular carbon discharge port is connected to a chain bucket conveyor in the original activated coke desulfurization and denitrification device through a granular carbon discharge pipe.
[0008] Furthermore, the powdered carbon screen interface includes a middle powdered carbon screen interface located in the middle of the vibrating screen and a tail powdered carbon screen interface located at the tail of the vibrating screen. The middle powdered carbon screen interface and the tail powdered carbon screen interface are each connected to a large ash bin through a powdered carbon feed pipe.
[0009] Furthermore, a gate valve is added to the connecting pipeline between the combined ash bin and the large ash bin in the pulverized carbon collection system of the original activated coke desulfurization and denitrification device, and the gate valve is located below the connection at the head end of the re-screening bypass.
[0010] Furthermore, a dust removal interface is provided on the top of the vibrating screen, and the dust removal interface is connected to the dust removal system in the original activated coke desulfurization and denitrification device through a dust removal pipeline.
[0011] The beneficial effects of the utility model include:
[0012] 1. This device is used in the powdered carbon collection system of the activated coke desulfurization and denitrification device. After re-screening, the larger activated coke particles in the powdered carbon can be separated and continue to be used as a catalyst, avoiding the waste of resources, reducing catalyst loss, and thus reducing operating costs.
[0013] 2. After the device separates the larger activated coke particles from the powdered carbon, the remaining powdered carbon is more convenient to pneumatically convey, reducing the risk of pipeline blockage and impact wear.
[0014] 3. After the device separates the larger activated coke particles from the powdered carbon, the remaining powdered carbon is more conducive to combustion when used as fuel. If the fuel has requirements for particle size, it also reduces the workload and difficulty of powdered carbon grinding. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0016] In the figure: 1. Vibrating screen; 2. Plug-in regulating valve; 3. Dust removal interface; 4. Middle powdered carbon screen lower interface; 5. Tail powdered carbon screen lower interface; 6. Granular carbon feed port; 7. Plug-in valve; 8. Re-screening bypass. DETAILED DESCRIPTION
[0017] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0019] Example 1
[0020] An activated coke powder re-screening device comprises a vibrating screen 1, a plug-in regulating valve 2, a dust removal interface 3, a middle powdered carbon screen interface 4, a tail powdered carbon screen interface 5, a granular carbon feed port 6, and a plug-in valve 7.
[0021] like Figure 1 As shown, the vibrating screen 1 is arranged between the combined ash bin and the large ash bin in the pulverized carbon collection system of the original activated coke desulfurization and denitrification device, and a re-screening bypass 8 is added under the original pneumatic semi-ball valve of the combined ash bin, and the end of the re-screening bypass 8 is connected to the vibrating screen 1.
[0022] A gate valve 7 is added to the original powdered carbon pipeline between the combined ash bin and the large ash bin to prevent the powdered carbon in the original powdered carbon pipeline from passing through when the vibrating screen 1 is working. A gate regulating valve 2 is set on the re-screening bypass 8 to adjust the amount of powdered carbon entering the vibrating screen 1. The middle powdered carbon screen interface 4 and the tail powdered carbon screen interface 5 are respectively set at the lower part of the vibrating screen 1. The middle powdered carbon screen interface 4 and the tail powdered carbon screen interface 5 are each connected to the large ash bin through a powdered carbon feed pipe. The screened powdered carbon enters the large ash bin through the powdered carbon feed pipes of the middle powdered carbon screen interface 4 and the tail powdered carbon screen interface 5, and the screened larger particles are returned to the original production system chain bucket machine through the particle carbon feed port 6 for reuse. At the same time, a dust removal interface 3 is set on the top of the vibrating screen 1. The dust removal interface 3 is connected to the dust removal system in the original activated coke desulfurization and denitrification device through the dust removal pipeline to ensure environmental hygiene.
[0023] Specifically, when the vibrating screen 1 is working, the opening of the plug regulating valve 2 is first adjusted appropriately to adjust the amount of powdered coal discharged into the combined ash bin to ensure that the amount of powdered coal discharged is within the bearing range of the vibrating screen 1, so as to facilitate the frequency modulation of the vibrating screen 1.
[0024] When the plug-in regulating valve 2 is gradually opened from the closed state, due to the small content of available granular carbon in the powdered carbon, the screened pulverized carbon will first fall into the large ash bin at the middle pulverized carbon screen interface 4. After the plug-in regulating valve 2 continues to increase its opening, the screened pulverized carbon will appear at the tail pulverized carbon screen interface 5 and fall into the large ash bin. At the same time, the larger particles of activated coke will return to the original production system chain bucket machine through the granular carbon feed port 6. When pulverized carbon appears in the granular carbon feed port 6, it means that the plug-in regulating valve 2 is too wide and needs to be opened.
[0025] When the content of available granular carbon in the pulverized carbon is too high and exceeds the processing capacity of the vibrating screen 1, resulting in the gate regulating valve 2 being opened too small, the gate valve 7 is opened appropriately to enable the original pulverized carbon feeding pipeline and the newly added activated coke pulverized carbon re-screening device to operate simultaneously, without affecting the production of the original production system due to the operation of the activated coke pulverized carbon re-screening device.
[0026] When the vibrating screen 1 is in operation, dust and fly ash are inevitably generated, which are introduced into the original environmental dust removal system through the dust removal interface 3 to prevent dust from overflowing and affecting environmental hygiene.
[0027] In the process of gradually adjusting the opening of the plug-in regulating valve 2, after the opening is adjusted to a certain degree, it is necessary to first observe the ash discharge situation at the interface 4 under the middle powdered coal screen to ensure that the powdered coal discharge is normal, so as to adjust the powdered coal discharge amount in the combined ash bin to ensure that the powdered coal discharge amount is within the bearing range of the vibrating screen 1, which is convenient for the frequency modulation of the vibrating screen 1.
[0028] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.
Claims
1. An activated coke powder re-screening device, characterized in that: The invention comprises a re-screening bypass (8) connected between a combined ash bin and a large ash bin in a pulverized carbon collection system of an original activated coke desulfurization and denitrification device, wherein the end of the re-screening bypass (8) is connected to a vibrating screen (1), and a plug-in regulating valve (2) is provided on the re-screening bypass (8) for regulating the amount of pulverized carbon discharged from the combined ash bin into the vibrating screen (1); a pulverized carbon screen lower interface and a granular carbon discharge port (6) are respectively provided at the bottom of the vibrating screen (1), wherein the pulverized carbon screen lower interface is connected to the large ash bin through a pulverized carbon discharge pipe, and the granular carbon discharge port (6) is connected to a chain bucket conveyor in the original activated coke desulfurization and denitrification device through a granular carbon discharge pipe.
2. The activated coke powder re-screening device according to claim 1, characterized in that: The powdered carbon screen interface comprises a middle powdered carbon screen interface (4) arranged in the middle of the vibrating screen (1) and a rear powdered carbon screen interface (5) arranged in the rear of the vibrating screen (1), and the middle powdered carbon screen interface (4) and the rear powdered carbon screen interface (5) are each connected to a large ash bin via a powdered carbon feed pipe.
3. An activated coke powder re-screening device according to claim 1 or 2, characterized in that: A gate valve (7) is added to the connecting pipeline between the combined ash bin and the large ash bin in the pulverized carbon collection system of the original activated coke desulfurization and denitrification device. The gate valve (7) is located below the connection of the head end of the rescreening bypass (8).
4. The activated coke powder re-screening device according to claim 3, characterized in that: A dust removal interface (3) is provided on the top of the vibrating screen (1), and the dust removal interface (3) is connected to the dust removal system in the original activated coke desulfurization and denitrification device through a dust removal pipeline.