Automatic feeding device for flue gas moving bed dry desulfurization calcium-based desulfurizing agent

Abstract

The utility model discloses an automatic feeding device for a flue gas moving bed dry desulfurization calcium-based desulfurizing agent, which relates to the technical field of desulfurization equipment and comprises a stock bin and an elevator which are mounted on one side of a desulfurization bin, a discharge port of the stock bin is communicated with a feed port of the elevator, and a discharge port of the elevator is communicated with a chute three-way distributor; a second belt conveyor and a third belt conveyor which are arranged in parallel and a first belt conveyor connected with the second belt conveyor are mounted at the top of the desulfurization bin, and two discharge ports of the chute three-way distributor are respectively communicated with the first belt conveyor and the third belt conveyor; the second belt conveyor and the third belt conveyor are each provided with a discharging opening communicated with a desulfurizing agent feeding opening of the desulfurizing bin. According to the utility model, the desulfurizing agent can be automatically added, the labor intensity of workers is low, the number of personnel allocation is small, the adding amount is accurate, and the utilization rate of the desulfurizing agent is improved while the desulfurization rate is ensured.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization equipment technology, and in particular to an automatic feeding device for calcium-based desulfurizing agent in flue gas moving bed dry desulfurization. Background Technology

[0002] Currently, moving bed calcium-based dry desulfurization units are commonly used for continuous ultra-low emission environmental protection treatment of flue gas from low-sulfur and low-dust kilns to achieve dust removal and desulfurization. The addition of desulfurizing agent to these units is often done manually. The agent is lifted to the inlet of the desulfurization chamber using a hoist and then manually added into the chamber. This method is labor-intensive, requires a large workforce, and the dosage is based solely on manual experience, resulting in inaccurate dosage, low desulfurization rate, and low utilization of the desulfurizing agent. Utility Model Content

[0003] To address the above deficiencies, the purpose of this utility model is to provide an automatic feeding device for calcium-based desulfurizing agent in flue gas moving bed dry desulfurization. This automatic feeding device can automatically complete the addition of desulfurizing agent, reducing the labor intensity of workers, requiring fewer personnel, and ensuring precise dosage, which is beneficial to improving the utilization rate of desulfurizing agent while ensuring the desulfurization rate.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] An automatic feeding device for calcium-based desulfurizing agent in a moving bed dry flue gas desulfurization process includes a silo and an elevator installed on one side of the desulfurization chamber. The outlet of the silo is connected to the inlet of the elevator, and the outlet of the elevator is connected to a chute three-way distributor. A second belt conveyor and a third belt conveyor are installed in parallel on the top of the desulfurization chamber, and a first belt conveyor is connected to the second belt conveyor. The two outlets of the chute three-way distributor are respectively connected to the first belt conveyor and the third belt conveyor. Both the second belt conveyor and the third belt conveyor are provided with discharge ports connected to the desulfurizing agent inlet of the desulfurization chamber.

[0006] A vibrating screen is connected between the discharge port of the silo and the inlet of the elevator.

[0007] The top of the silo is connected to a dust collector.

[0008] The desulfurization chamber includes two large compartments arranged side by side, and the second belt conveyor and the third belt conveyor are respectively set to the desulfurizing agent inlet of the two large compartments.

[0009] Each of the large compartments is divided into five smaller compartments, and the second and third belt conveyors are each equipped with five discharge ports.

[0010] Each of the aforementioned discharge ports is equipped with an electric slide gate valve and a rotary valve.

[0011] All of the electric slide gate valves and the rotary valves are controlled by frequency converters.

[0012] The elevator is a Z-type bucket elevator.

[0013] Each of the two large compartments has a first scraper conveyor connected to its unloading port, and both first scraper conveyors are connected to a second scraper conveyor.

[0014] The second scraper conveyor is connected to a third scraper conveyor.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] The present invention relates to an automatic feeding device for calcium-based desulfurizing agent in a dry flue gas moving bed desulfurization process, comprising a silo and an elevator installed on one side of the desulfurization chamber. The outlet of the silo is connected to the inlet of the elevator, and the outlet of the elevator is connected to a chute three-way distributor. A second belt conveyor and a third belt conveyor are installed in parallel on the top of the desulfurization chamber, and a first belt conveyor is connected to the second belt conveyor. The two outlets of the chute three-way distributor are respectively connected to the first belt conveyor and the third belt conveyor. Both the second belt conveyor and the third belt conveyor are provided with discharge ports connected to the desulfurizing agent inlet of the desulfurization chamber. This invention uses an elevator to lift the desulfurizing agent from the silo to the top of the desulfurization chamber. Then, a first and a second belt conveyor automatically transport the desulfurizing agent to the various desulfurizing agent inlets within the chamber. Electric slide valves and rotary valves dispense the desulfurizing agent into the chamber in precise quantities, achieving automatic addition of the desulfurizing agent and eliminating the need for manual addition. This significantly reduces the labor intensity and the number of workers required. Furthermore, controlling the speed of the rotary valve allows for precise control of the amount of desulfurizing agent added, improving the accuracy of the dosage and increasing the utilization rate of the desulfurizing agent while ensuring desulfurization efficiency.

[0017] In summary, the automatic feeding device for calcium-based desulfurizing agent in the dry flue gas moving bed desulfurization process of this utility model solves the technical problems of high labor intensity and low desulfurizing agent utilization rate in the prior art. The automatic feeding device for calcium-based desulfurizing agent in the dry flue gas moving bed desulfurization process of this utility model can automatically complete the addition of desulfurizing agent, reduce the labor intensity of workers, require fewer personnel, and accurately add the amount, which is conducive to improving the utilization rate of desulfurizing agent while ensuring the desulfurization rate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the automatic feeding device for calcium-based desulfurizing agent in the dry flue gas moving bed desulfurization method of this utility model;

[0019] Figure 2yes Figure 1 View from direction A;

[0020] Figure 3 yes Figure 1 Schematic diagram of the top feeding device of the desulfurization silo;

[0021] In the diagram: 10, desulfurization bin; 20, silo; 22, dust collector; 30, vibrating screen; 40, elevator; 50, chute three-way distributor; 60, first belt conveyor; 62, second belt conveyor; 64, third belt conveyor; 66, discharge port; 70, first scraper conveyor; 72, second scraper conveyor. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] The directions mentioned in this manual are based on the directions shown in the attached diagram and represent only relative positional relationships, not absolute positional relationships.

[0024] like Figure 1 , Figure 2 and Figure 3As shown, an automatic feeding device for calcium-based desulfurizing agent in a moving bed dry flue gas desulfurization process includes a silo 20 and an elevator 40 installed side-by-side on one side of a desulfurization chamber 10. The outlet of the silo 20 is connected to the inlet of the elevator 40. The silo 20 is used to store the desulfurizing agent, and the elevator 40 is used to lift the desulfurizing agent in the silo 20 to the top of the desulfurization chamber 10. In this preferred embodiment, the desulfurization chamber 10 includes two large compartments arranged side-by-side. Each large compartment is divided into five smaller compartments, and each smaller compartment has a desulfurizing agent inlet at its top. That is, there are two rows of desulfurizing agent inlets at the top of the desulfurization chamber 10, with the first row having a total of five desulfurizing agent inlets. Therefore, a second belt conveyor 62 and a third belt conveyor 64 are respectively installed at the top of the desulfurization chamber 10, corresponding to the two rows of desulfurizing agent inlets. The second belt conveyor 62 and the third belt conveyor 64 are arranged parallel to each other. A first belt conveyor 60 is also installed at the top of the desulfurization chamber 10. The first belt conveyor 60 is located at the end of the second belt conveyor 62 and the third belt conveyor 64 near the elevator 40. The first belt conveyor 60 is perpendicular to the second belt conveyor 62 and the third belt conveyor 64, and the first belt conveyor 60 is connected to the second belt conveyor 62. Each of the second belt conveyor 62 and the third belt conveyor 64 has five discharge ports 66, and the five discharge ports 66 are respectively connected to the corresponding desulfurizing agent inlets. The discharge port of the elevator 40 is connected to a chute three-way distributor 50. The two discharge ports of the chute three-way distributor 50 are respectively connected to the first belt conveyor 60 and the third belt conveyor 64. The chute three-way distributor 50 distributes the desulfurizing agent lifted by the elevator 40 to the first belt conveyor 60 and the third belt conveyor 64. The first belt conveyor 60 conveys the desulfurizing agent to the second belt conveyor 62. The second belt conveyor 62 conveys the material to the desulfurizing agent inlet of each large compartment and puts it into the desulfurization chamber 10. Similarly, the third belt conveyor 64 also puts the desulfurizing agent on it into the desulfurization chamber 10.

[0025] like Figure 1 and Figure 2 As shown in the diagram, in this embodiment, a vibrating screen 30 is preferably installed between the discharge port of the silo 20 and the inlet of the elevator 40. The vibrating screen 30 screens the desulfurizing agent in the silo 20, and the desulfurizing agent with the required particle size is screened out and transported to the desulfurization chamber 10 by the elevator 40. This ensures that the particle size of the desulfurizing agent entering the desulfurization chamber 10 meets the requirements, thereby reducing the desulfurization operation resistance, improving the desulfurization efficiency, and also improving the utilization rate of the desulfurizing agent.

[0026] like Figure 1 and Figure 2 As shown, the top of the silo 20 is connected to a dust collector 22, which can reduce dust pollution in the production space and ensure good air quality in the production area.

[0027] like Figure 1 , Figure 2 and Figure 3As shown in the figure, each of the 66 discharge ports is equipped with an electric slide gate valve and a rotary valve (not shown in the figure). Since the electric slide gate valve and rotary valve are existing products, their specific structure is not an innovation of this utility model; therefore, the specific structure and installation method of the electric slide gate valve and rotary valve will not be described in detail here. Preferably, each electric slide gate valve in this embodiment is controlled by a frequency converter, allowing the addition of desulfurizing agent to each desulfurization compartment to be completed from the DCS room. Further preferably, each rotary valve in this embodiment is also controlled by a frequency converter, enabling variable frequency speed regulation of the rotary valve, thereby achieving automatic control of the desulfurizing agent addition amount and more precise dosage.

[0028] like Figure 1 and Figure 2 As shown in the figure, the preferred elevator 40 in this embodiment is a Z-type bucket elevator, which includes a chain tension, torque and bucket posture monitoring system, and operates stably and smoothly without bucket jamming or separation.

[0029] like Figure 1 and Figure 2 As shown in the figure, each of the two large compartments is connected to a first scraper conveyor 70 at its discharge port. Both first scraper conveyors 70 are connected to a second scraper conveyor 72. The second scraper conveyor 72 is connected to a third scraper conveyor (not shown in the figure). The material discharged from the desulfurization compartment can be transported out through the first scraper conveyor 70, the second scraper conveyor 72 and the third scraper conveyor.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, in this embodiment, the motors and solenoid valve coils used in the entire device are preferably products with an ExDIIBT4 explosion-proof rating to meet the explosion-proof requirements on site and ensure the safety of production.

[0031] In summary, the automatic feeding device for calcium-based desulfurizing agent in flue gas moving bed dry desulfurization can realize automatic screening, automatic lifting and addition of calcium-based dry desulfurizing agent in flue gas moving bed, reducing the labor intensity of workers, improving the accuracy of desulfurizing agent addition, ensuring efficient desulfurization while improving the utilization efficiency of desulfurizing agent; moreover, the device has low manufacturing and operating costs and a high degree of automation.

[0032] This utility model is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort shall fall within the protection scope of this utility model.

Claims

1. An automatic feeding device for calcium-based desulfurizing agent in dry flue gas moving bed desulfurization, characterized in that, The equipment includes a hopper (20) and an elevator (40) installed on one side of the desulfurization chamber (10). The outlet of the hopper (20) is connected to the inlet of the elevator (40). The outlet of the elevator (40) is connected to a chute three-way distributor (50). The top of the desulfurization chamber (10) is equipped with a second belt conveyor (62) and a third belt conveyor (64) arranged in parallel, and a first belt conveyor (60) connected to the second belt conveyor (62). The two outlets of the chute three-way distributor (50) are respectively connected to the first belt conveyor (60) and the third belt conveyor (64). The second belt conveyor (62) and the third belt conveyor (64) are each provided with a discharge port (66) connected to the desulfurizing agent inlet of the desulfurization chamber (10).

2. The automatic feeding device for calcium-based desulfurizing agent in flue gas moving bed dry desulfurization according to claim 1, characterized in that, A vibrating screen (30) is connected between the discharge port of the hopper (20) and the inlet of the elevator (40).

3. The automatic feeding device for calcium-based desulfurizing agent in flue gas moving bed dry desulfurization according to claim 2, characterized in that, The top of the silo (20) is connected to a dust collector (22).

4. The automatic feeding device for calcium-based desulfurizing agent in flue gas moving bed dry desulfurization according to claim 3, characterized in that, The desulfurization chamber (10) includes two large sub-chambers arranged side by side, and the second belt conveyor (62) and the third belt conveyor (64) are respectively set to the desulfurizing agent inlet of the two large sub-chambers.

5. The automatic feeding device for calcium-based desulfurizing agent in flue gas moving bed dry desulfurization according to claim 4, characterized in that, Each of the large compartments is divided into five smaller compartments, and the second belt conveyor (62) and the third belt conveyor (64) are each provided with five discharge ports (66).

6. The automatic feeding device for calcium-based desulfurizing agent in flue gas moving bed dry desulfurization according to claim 5, characterized in that, Each of the discharge ports (66) is equipped with an electric slide gate valve and a rotary valve.

7. The automatic feeding device for calcium-based desulfurizing agent in flue gas moving bed dry desulfurization according to claim 6, characterized in that, Both the electric slide gate valve and the rotary valve are controlled by frequency converters.

8. The automatic feeding device for calcium-based desulfurizing agent in flue gas moving bed dry desulfurization according to claim 1, characterized in that, The elevator (40) is a Z-type bucket elevator.

9. The automatic feeding device for calcium-based desulfurizing agent in flue gas moving bed dry desulfurization according to claim 4, characterized in that, Each of the two large compartments has a first scraper conveyor (70) connected to its discharge port, and both first scraper conveyors (70) are connected to a second scraper conveyor (72).

10. The automatic feeding device for calcium-based desulfurizing agent in flue gas moving bed dry desulfurization according to claim 9, characterized in that, The second scraper conveyor (72) is connected to the third scraper conveyor.

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