Combined discharging device with screening and recycling functions
By introducing a combined unloading device with screening and recovery functions into the dry defluorination and dust removal system, the catalyst and waste are separated by primary and secondary screening modules, achieving efficient recovery and reuse of the catalyst, solving the problem of catalyst resource waste, and reducing operating costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN ZHONGYA HUANYOU ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-05-05
AI Technical Summary
In existing dry defluorination and dust removal systems, the catalyst is mixed with waste after the reaction, resulting in resource waste and low utilization, which increases operating costs.
The combined unloading device with screening and recovery functions is adopted, including a primary screening module and a secondary screening module. Through the design of the main blowing pipe and the arch-breaking pipe, the catalyst can be efficiently separated and recovered, and the PLC control box is used to realize automated operation.
It improves catalyst utilization, reduces operating costs, enables secondary recycling of catalysts, and reduces the frequency of replenishing new catalysts.
Smart Images
Figure CN224194434U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of dry catalytic reaction dust removal system, specifically to a combined unloading device with screening and recovery function. Background Technology
[0002] Dry catalytic reaction dust removal systems are industrial waste gas treatment systems that combine catalytic reaction and dust removal functions. They are primarily used to remove harmful substances (such as sulfides, nitrogen oxides, and fluorides) from waste gases, while simultaneously improving treatment efficiency through catalytic reactions. A key feature of this system is the use of dry catalysts, avoiding the complexity and potential secondary pollution problems associated with wet systems.
[0003] Taking a dry defluorination and dust removal system as an example, the system's workflow is as follows: First, the dry catalyst is injected into the reaction pipeline, where it reacts chemically with fluorides in the waste gas to generate solid particles, thus effectively removing the fluorides. Next, the waste gas containing solid particles enters the dust collector, which uses the filtration effect of the filter bags to separate and collect the dust generated after the reaction, as well as the unreacted catalyst. During this process, some catalyst adheres to the surface of the filter bags in the dust collector, gradually forming a protective powder layer. This powder layer not only further improves dust removal efficiency but also enhances the filtration effect of the filter bags, making the dust collector more efficient in treating waste gas. However, most dry defluorination and dust removal systems currently have a prominent problem: most of the catalyst, after the reaction is complete, directly enters the dust collector's ash hopper, mixing with various wastes and ultimately being disposed of as waste. This treatment method not only causes a serious waste of catalyst resources but also significantly reduces the overall utilization rate of the catalyst, forcing companies to frequently replenish new catalysts, thereby greatly increasing the system's operating costs.
[0004] This processing method results in very low catalyst utilization, as most of the catalyst is discarded without being fully utilized. Low utilization means that new catalyst needs to be replenished frequently, increasing operating costs.
[0005] Therefore, in order to improve the utilization rate of catalysts and reduce operating costs, this invention provides a combined unloading device with screening and recovery functions. Utility Model Content
[0006] To address the aforementioned problems in the existing technology, this utility model provides a combined unloading device with screening and recycling functions.
[0007] The technical solution adopted by this utility model is as follows: A combined unloading device with screening and recycling function includes a mixing silo connected to the dust collector hopper pipe. The discharge port of the mixing silo is equipped with a discharge valve, and the discharge port of the discharge valve is equipped with a screening silo. The screening silo is equipped with a primary screening module and a secondary screening module. A return pipe is installed at the side wall outlet of the screening silo, and a waste silo is installed at the bottom outlet of the screening silo. An airlock discharge valve is installed at the discharge port of the waste silo.
[0008] Furthermore, the primary screening module includes a main air blowing pipe connected to the side wall of the screening chamber, an electric switching valve is installed on the main air blowing pipe, and the outlet of the main air blowing pipe is aligned with the inlet of the return pipe.
[0009] Furthermore, the diameter of the main air blowing pipe is smaller than the diameter of the return material pipe.
[0010] Furthermore, the electric switching valve is electrically connected to a control box via a connecting line.
[0011] Furthermore, the secondary screening module includes an arch-breaking air pipe connected to the main air pipe, an electromagnetic pulse valve is installed on the arch-breaking air pipe, and the arch-breaking air pipe passes through the screening chamber and is aligned with the waste bin.
[0012] Furthermore, the diameter of the arch-breaking air pipe is smaller than the inlet diameter of the waste bin.
[0013] Furthermore, the electromagnetic pulse valve is electrically connected to the control box via a connecting line.
[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0015] This combined unloading device with screening and recovery function can maximize the recovery of usable catalyst by setting a primary screening module and a secondary screening module on the screening chamber, thereby improving the utilization efficiency of the catalyst. It can also complete the secondary recycling of the catalyst while removing waste, thus eliminating the need to frequently replenish new catalyst and reducing operating costs. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a structural schematic diagram provided for an embodiment of the present utility model.
[0018] Attached diagram descriptions: 1. Mixing silo; 2. Discharge valve; 3. Arch-breaking air pipe; 4. Screening silo; 5. Return pipe; 6. Waste silo; 7. Airlock discharge valve; 8. Control box; 9. Electric switch valve; 10. Electromagnetic pulse valve; 11. Main air blowing pipe. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments 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, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0021] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they 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.
[0022] The following is combined Figure 1 This utility model will be described in detail.
[0023] Example
[0024] like Figure 1As shown, a combined unloading device with screening and recycling functions includes a mixing silo 1 connected to a dust collector hopper pipe. The mixing silo 1 receives catalyst-containing powder collected from the dust collector hopper. A discharge valve 2 is installed at the outlet of the mixing silo 1. Opening the discharge valve 2 allows the catalyst-containing powder to be discharged from the top into a screening silo 4. The screening silo 4 is installed at the outlet of the discharge valve 2 to screen the catalyst-containing powder, separating usable catalyst from waste. A return pipe 5 is installed at the side wall outlet of the screening silo 4. The return pipe 5 is connected to the dust collector's suction pipe or catalyst ash silo, used to return the screened usable catalyst back to the suction pipe or catalyst ash silo for reuse. A waste silo 6 is installed at the bottom outlet of the screening silo 4 to receive the screened waste. An airlock discharge valve 7 is installed at the outlet of the waste silo 6 to discharge the waste from the waste silo. The screening silo 4 is equipped with a primary screening module and a secondary screening module.
[0025] The primary screening module includes a main air pipe 11 connected to the side wall of the screening chamber 4. An electric switching valve 9 is installed on the main air pipe 11 to control the compressed air flow rate of the main air pipe 11.
[0026] Furthermore, the outlet of the main blowing pipe 11 is aligned with the inlet of the return pipe 5 to ensure that the compressed air in the main blowing pipe 11 effectively blows the screened catalyst into the return pipe 5.
[0027] The diameter of the main blowing pipe 11 is smaller than that of the return pipe 5, which makes the compressed air flow faster and with stronger impact when it flows in the main blowing pipe 11. This high-speed airflow can more effectively blow the screened catalyst into the return pipe 5, ensuring that the catalyst can smoothly enter the return pipe 5 and be transported back to the reaction pipeline or catalyst ash silo.
[0028] In addition, the electric switch valve 9 is electrically connected to the control box 8 via a connecting line. The control box 8 is connected to the electric switch valve 9 and is used to control the opening or closing of the electric switch valve 9.
[0029] Control box 8 is a PLC control box used to control the entire screening cycle process of this utility model. It can realize fully automatic or manual operation and is linked with the overall ash unloading operation of the dust collector.
[0030] The secondary screening module includes an arch-breaking air pipe 3 connected to the main air pipe 11. An electromagnetic pulse valve 10 is installed on the arch-breaking air pipe 3. The electromagnetic pulse valve 10 is used to open the arch-breaking air pipe 3 after the electric switch valve 9 is closed, so that the arch-breaking air pipe 3 sprays out pulse compressed air, that is, to control the pulse compressed air spraying of the arch-breaking air pipe 3.
[0031] Furthermore, the arch-breaking air pipe 3 penetrates the screening chamber 4 and is aligned with the waste bin 6, ensuring that the arch-breaking air pipe 3 is located in the center of the screening chamber 4 and aligned with the waste in the waste bin 6.
[0032] The diameter of the arch-breaking air pipe 3 is smaller than the inlet diameter of the waste bin 6, which increases the airflow speed and impact force when the compressed air is ejected through the arch-breaking air pipe 3. When the pulsed compressed air is sprayed onto the waste in the waste bin 6, it can more effectively destroy the accumulation arch of the waste.
[0033] In addition, the electromagnetic pulse valve 10 is electrically connected to the control box 8 via a connecting line. The control box 8 is connected to the electromagnetic pulse valve 10 and is used to control the opening or closing of the electromagnetic pulse valve 10.
[0034] Specifically, when using this combined unloading device with screening and recycling functions:
[0035] First, the discharge valve 2 is opened so that the powder containing the catalyst in the mixing bin 1 enters the screening bin 4 through the discharge valve 2, and the powder containing the catalyst is screened by the screening bin 4.
[0036] Then, a screening process begins. The electric switch valve 9 is opened, and compressed air from the main blow pipe 11 blows the reusable catalyst through the return pipe 5 back to the reaction pipeline or catalyst ash silo to participate in the reaction again. The remaining waste enters the waste silo 6 and is discharged through the airlock discharge valve 7 for further processing.
[0037] Finally, a second screening is performed. The electric switch valve 9 is closed, the electromagnetic pulse valve 10 is opened, and the arch-breaking air pipe 3 sprays pulsed compressed air to break the arches in the waste bin. The pulsed compressed air further screens the usable catalyst in the waste and recycles it through the return pipe 5 for a second back-blowing.
[0038] The entire screening cycle is controlled by PLC control box 8, which can be linked with the overall ash unloading operation of the dust collector to achieve automated operation.
[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A combined unloading device with screening and recycling function, comprising a mixing silo (1) connected to a dust collector hopper pipe, characterized in that: The discharge port of the mixing silo (1) is equipped with a discharge valve (2), the discharge port of the discharge valve (2) is equipped with a screening silo (4), the screening silo (4) is equipped with a primary screening module and a secondary screening module, the side wall outlet of the screening silo (4) is equipped with a return pipe (5), the bottom outlet of the screening silo (4) is equipped with a waste silo (6), and the discharge port of the waste silo (6) is equipped with an airlock discharge valve (7).
2. The combined unloading device with screening and recycling function according to claim 1, characterized in that: The primary screening module includes a main air blowing pipe (11) connected to the side wall of the screening chamber (4). An electric switch valve (9) is installed on the main air blowing pipe (11), and the outlet of the main air blowing pipe (11) is aligned with the inlet of the return pipe (5).
3. The combined unloading device with screening and recycling function according to claim 2, characterized in that: The diameter of the main air blowing pipe (11) is smaller than the diameter of the return pipe (5).
4. The combined unloading device with screening and recycling function according to claim 2, characterized in that: The electric switch valve (9) is electrically connected to the control box (8) via a connection line.
5. The combined unloading device with screening and recycling function according to claim 4, characterized in that: The secondary screening module includes an arch-breaking air pipe (3) connected to the main air pipe (11). An electromagnetic pulse valve (10) is installed on the arch-breaking air pipe (3). The arch-breaking air pipe (3) passes through the screening chamber (4) and is aligned with the waste bin (6).
6. The combined unloading device with screening and recycling function according to claim 5, characterized in that: The diameter of the arch-breaking air pipe (3) is smaller than the inlet diameter of the waste bin (6).
7. The combined unloading device with screening and recycling function according to claim 5, characterized in that: The electromagnetic pulse valve (10) is electrically connected to the control box (8) via a connection line.