Intelligent adjusting reaction device for semi-dry desulfurization of aluminum electrolysis flue gas

Abstract

The utility model belongs to aluminum electrolysis flue gas semi-dry method desulfurization technical field provides a kind of aluminum electrolysis flue gas semi-dry method desulfurization with intelligent reaction device of adjusting.The device includes reactor air inlet (1), flue gas rectifier (2) and reactor straight section (3), and the reactor air inlet, flue gas rectifier, reactor straight section are sequentially docked to form reactor passage;Reactor pressure monitoring network (4), uniform material distribution device (5), uniform humidification device (6) and reactor humidity monitoring network (7) are provided on the reactor straight section (3).Utilize the device described in the utility model, can realize the stable conveying material of reactor, uniform material distribution, improve desulfurizer utilization efficiency, improve the safety reliability of equipment operation.

Description

Technical Field

[0001] This utility model belongs to the field of semi-dry desulfurization technology of aluminum electrolysis flue gas, and specifically relates to an intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas. Background Technology

[0002] The aluminum electrolysis production process generates a large amount of flue gas containing harmful components such as sulfur dioxide, which requires desulfurization treatment to meet environmental protection requirements. Semi-dry desulfurization technology is widely used in aluminum electrolysis flue gas treatment due to its high efficiency and relatively low cost.

[0003] In the semi-dry desulfurization process, the material circulation reaction is one of the key core systems, bearing the heavy responsibility of material circulation and stable input. Its operation directly determines important indicators such as desulfurization efficiency, desulfurizing agent utilization rate, and water consumption. However, the reactors currently used in the market have many problems: unstable material conveying leads to the desulfurization reaction not proceeding continuously and stably; the single and unevenly distributed material conveying point prevents the desulfurizing agent from fully contacting and reacting with the flue gas, which not only reduces desulfurization efficiency but also results in high desulfurizing agent consumption; in addition, material sticking to the walls and bed collapse are prone to occur, which not only increases the workload of cleaning and maintenance personnel but may also lead to environmental violations if not handled in a timely manner, significantly increasing the environmental costs of enterprise production.

[0004] Therefore, developing an intelligent regulating reaction system for semi-dry desulfurization of aluminum electrolysis flue gas that can achieve stable material conveying, uniform material distribution, improve the utilization efficiency of desulfurizing agents, and enhance the safety and reliability of equipment operation is of great practical significance. Summary of the Invention

[0005] To address the problems of unstable material conveying, uneven distribution, low desulfurization efficiency, high desulfurizing agent consumption, and easy material sticking to the wall and bed collapse in existing reactors, the purpose of this utility model is to provide an intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas, so as to achieve stable material conveying, uniform material distribution, improved desulfurizing agent utilization efficiency, and enhanced safety and reliability of equipment operation.

[0006] The purpose of this application is achieved as follows:

[0007] The first aspect of this application provides an intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas, including a reactor inlet, a flue gas rectifier and a reactor straight section, wherein the reactor inlet, the flue gas rectifier and the reactor straight section are sequentially connected to form a reactor channel;

[0008] A reactor pressure monitoring network, a uniform material distribution device, a uniform humidification device, and a reactor humidity monitoring network are installed on the straight section of the reactor. The reactor pressure monitoring network has two sections, which are respectively arranged at the upper and lower ends of the uniform material distribution device. The uniform material distribution device includes a flow regulating device and a V-shaped feeding device. The uniform humidification device uses a dual-fluid spray gun for humidification. The reactor humidity monitoring network is arranged at the upper end of the uniform humidification device and is connected from the side of the reactor.

[0009] Furthermore, the flue gas rectifier is constructed from 10mm wear-resistant flat steel.

[0010] Furthermore, the reactor pressure monitoring network consists of a reactor inlet pressure detection network and a reactor outlet pressure detection network, which are respectively installed at the upper and lower ends of the uniform material distribution device.

[0011] Furthermore, the flow regulating device and the V-shaped feeding device are configured in a one-to-one correspondence; the V-shaped feeding device is evenly arranged within a 360-degree range of the straight section of the reactor.

[0012] Furthermore, the included angle between adjacent V-shaped feeding devices is controlled at 15~20°.

[0013] Furthermore, the number of reactor pressure monitoring networks is consistent with the number of V-shaped feed devices.

[0014] Furthermore, the number of the reactor humidity monitoring network is the same as the number of dual-fluid spray guns used in the uniform humidification device, and the dual-fluid spray guns are evenly arranged within a 360-degree range of the reactor's straight section.

[0015] Furthermore, the included angle between adjacent dual-fluid spray guns is controlled at 45~60°.

[0016] Furthermore, it also includes a central control system, which is electrically connected to the reactor pressure monitoring network, the flow regulating device, the reactor humidity monitoring network, and the uniform humidification device, respectively. The central control system is used to receive monitoring data from the reactor pressure monitoring network and the reactor humidity monitoring network, and to control the operating parameters of the flow regulating device and the uniform humidification device according to the monitoring data.

[0017] The advantages and beneficial effects of this utility model are:

[0018] 1. This utility model achieves stable and uniform conveying of circulating materials by setting up a uniform material distribution device and a V-shaped feeding device that is evenly arranged within a 360-degree range in the straight section of the reactor with a reasonable included angle. Combined with the intelligent feedback control of the flow regulation device and the reactor pressure monitoring network, it solves the problems of unstable material conveying and uneven distribution in the prior art and improves the contact efficiency between the desulfurizing agent and the flue gas.

[0019] 2. The uniform humidification device adopts a dual-fluid spray gun with appropriate atomization particle size and uniform distribution. Combined with the intelligent adjustment of the reactor humidity monitoring network, it ensures uniform humidification in the reactor, which is conducive to the full progress of the desulfurization reaction, improves the desulfurization efficiency, and reduces the consumption of process water.

[0020] 3. The instruments of the reactor pressure monitoring network and humidity monitoring network are designed to withstand strong magnetic fields, enabling them to work stably in the strong magnetic field environment of the aluminum electrolysis workshop, ensuring the accuracy and reliability of the monitoring data, and providing strong support for intelligent regulation;

[0021] 4. The central control system enables intelligent adjustment of the entire reaction system, reduces manual intervention, lowers the workload of staff, avoids problems caused by improper human operation, improves the stability and safety of equipment operation, reduces the risk of exceeding environmental standards, and lowers the company's environmental protection costs.

[0022] 5. The flue gas rectifier is made of wear-resistant flat steel splicing, which improves the wear resistance and corrosion resistance of the device, extends the service life of the equipment, and reduces maintenance costs. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas described in this application;

[0025] In the diagram: 1-Reactor inlet; 2-Flue gas rectifier; 3-Straight section of reactor; 4-Reactor pressure monitoring network; 4-1-Reactor inlet pressure detection network; 4-2-Reactor outlet pressure detection network; 5-Uniform material distribution device; 5-1-Flow regulation device; 5-2-V-type feed device; 6-Uniform humidification device; 7-Reactor humidity monitoring network. Detailed Implementation

[0026] The specific implementation methods and technical solutions of this utility model are further described in detail below with reference to specific embodiments. It should be noted that those skilled in the art can refer to the content of this document and appropriately improve the process parameters to achieve the desired results. It is particularly important to point out that all similar substitutions and modifications are obvious to those skilled in the art and are considered to be included in this utility model. The methods and applications of this utility model have been described through preferred embodiments. Those skilled in the art can obviously make modifications or appropriate changes and combinations to the methods and applications described herein without departing from the content, spirit, and scope of this utility model to realize and apply the technology of this utility model.

[0027] The present invention will be described through specific embodiments, but the present invention is not limited thereto.

[0028] Example 1:

[0029] like Figure 1 As shown, this embodiment provides an intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas, including a reactor inlet 1, a flue gas rectifying device 2, a reactor straight section 3, and a central control system. The reactor inlet, flue gas rectifying device, and reactor straight section are sequentially connected to form a reactor channel. The flue gas rectifying device is made of 10mm thick wear-resistant flat steel spliced ​​together, and the flat steel is fixed by welding to form a grid-like structure, which rectifyes the incoming flue gas to make the flue gas flow field uniform.

[0030] A reactor pressure monitoring network 4, a uniform material distribution device 5, a uniform humidification device 6, and a reactor humidity monitoring network 7 are installed on the straight section 3 of the reactor. The reactor pressure monitoring network 4 consists of two sections—a reactor inlet pressure detection network 4-1 and a reactor outlet pressure detection network 4-2—which are respectively arranged at the upper and lower ends of the uniform material distribution device 5. Furthermore, the pressure monitoring instruments are designed for stable operation under a maximum magnetic field of 800 Gauss.

[0031] The uniform material distribution device 5 consists of 24 flow regulating devices 5-1 and 24 V-shaped feeding devices 5-2, with each flow regulating device and V-shaped feeding device configured in a one-to-one correspondence. The V-shaped feeding devices are made of stainless steel and are evenly arranged within a 360-degree range of the straight section of the reactor. The included angle between adjacent V-shaped feeding devices is controlled at 15~20° to ensure the uniformity of material distribution.

[0032] The uniform humidification device 6 uses a dual-fluid spray gun for humidification. The atomization particle size of the nozzle is controlled at 40~80μm. The dual-fluid spray guns are evenly arranged within a 360-degree range of the straight section of the reactor. The included angle between adjacent dual-fluid spray guns is controlled at 45~60° to ensure the uniformity of humidification. The dual-fluid spray guns are fixed to the inner wall of the straight section of the reactor by a bracket and are connected to the compressed air pipeline and the process water pipeline. The flow rate and pressure of the compressed air and process water are controlled by adjusting the valves.

[0033] The reactor humidity monitoring network 7 is arranged on top of the uniform humidification device 6 and consists of 8 sets of humidity monitoring instruments, each corresponding to one of the 8 dual-fluid spray guns. Each set of humidity monitoring instruments is connected from the side of the reactor. The humidity monitoring instruments of the reactor humidity monitoring network 7 are designed to operate stably under a maximum magnetic field of 800 Gauss.

[0034] The central control system is electrically connected to the reactor pressure monitoring network, the flow regulating device, the reactor humidity monitoring network, and the uniform humidification device, respectively. It is used to receive monitoring data from the reactor pressure monitoring network and the reactor humidity monitoring network, and to control the operating parameters of the flow regulating device and the uniform humidification device according to the monitoring data.

[0035] A smart regulation reaction method for semi-dry desulfurization of aluminum electrolysis flue gas based on the aforementioned device includes the following steps:

[0036] A. Flue gas introduction steps: The flue gas generated by aluminum electrolysis is introduced through the reactor inlet, and after being rectified by the flue gas rectifier, it enters the straight section of the reactor;

[0037] B. Material distribution steps: The circulating material of the semi-dry desulfurization process enters the straight section of the reactor through the V-shaped feed device of the uniform distribution device. The reactor pressure monitoring network monitors the pressure of each feed port of the uniform distribution device in real time and transmits the pressure data to the central control system. The central control system controls the flow regulating device according to the pressure data to adjust the circulating material flow rate of each feed port to keep the circulating material flow rate of each feed port consistent.

[0038] C. Humidification Step: The uniform humidification device sprays process water evenly into the reactor through a dual-fluid spray gun. The reactor humidity monitoring network monitors the humidity of each area in the reactor in real time and transmits the humidity data to the central control system. The central control system controls the flow rate of each dual-fluid spray gun in the uniform humidification device according to the humidity data to ensure uniform humidification of the system.

[0039] D. Reaction steps: Under the conditions of material distribution and humidification adjustment as described above, the circulating material, process water and flue gas fully contact and react in the straight section of the reactor to complete the semi-dry desulfurization process of aluminum electrolysis flue gas.

[0040] The working process of the device described in this embodiment is as follows:

[0041] When flue gas enters the intelligent regulating reactor for semi-dry desulfurization of aluminum electrolysis flue gas, the flue gas passes through the reactor inlet 1 and the flue gas rectifier 2, and then enters the reactor straight section 3 after the flue gas flow field is uniformly configured. The circulating material enters the reactor straight section 3 through the uniform distribution device 5. The circulating material is adjusted by the flow regulating device 5-1 at each point of the reactor pressure monitoring network 4 to ensure that the circulating material amount entering the reactor straight section 3 is uniform. The circulating material is fully mixed with the flue gas in the reactor straight section 3 through the uniform distribution device 5. The process humidification water enters the reactor straight section 3 through the uniform humidification device 6. The water volume of the uniform humidification device 6 is controlled by the humidity feedback at each point of the reactor humidity monitoring network 7 to ensure that the water volume at each point is consistent, so that the water, circulating ash, and flue gas can fully react and mix in the reactor straight section 3. Through such adjustments, the reactor can stably transport materials, uniformly distribute materials, and improve the utilization efficiency of the desulfurizing agent, thereby reducing material consumption and reducing the workload of personnel.

[0042] Finally, it should be noted that the above is only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the preferred arrangement, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model.

Claims

1. A smart regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas, characterized in that, It includes a reactor inlet (1), a flue gas rectifier (2), and a reactor straight section (3), wherein the reactor inlet, the flue gas rectifier, and the reactor straight section are connected in sequence to form a reactor channel; A reactor pressure monitoring network (4), a uniform material distribution device (5), a uniform humidification device (6), and a reactor humidity monitoring network (7) are provided on the straight section (3) of the reactor. The reactor pressure monitoring network (4) is provided in two sections, which are respectively arranged at the upper and lower ends of the uniform material distribution device (5). The uniform material distribution device (5) includes a flow regulating device (5-1) and a V-shaped feeding device (5-2). The uniform humidification device (6) uses a dual-fluid spray gun for humidification. The reactor humidity monitoring network (7) is arranged at the upper end of the uniform humidification device (6) and is connected from the side of the reactor.

2. The intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas according to claim 1, characterized in that, The flue gas rectifier (2) is made of 10mm wear-resistant flat steel.

3. The intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas according to claim 1, characterized in that, The reactor pressure monitoring network (4) consists of a reactor inlet pressure detection network (4-1) and a reactor outlet pressure detection network (4-2), which are respectively set at the upper and lower ends of the uniform material distribution device (5).

4. The intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas according to claim 1, characterized in that, The flow regulating device (5-1) and the V-shaped feeding device (5-2) are configured in a one-to-one correspondence; the V-shaped feeding device (5-2) is evenly arranged within a 360-degree range of the straight section (3) of the reactor.

5. The intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas according to claim 1 or 4, characterized in that, The included angle between adjacent V-shaped feeding devices (5-2) is controlled at 15~20°.

6. The intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas according to claim 1, characterized in that, The number of reactor pressure monitoring networks (4) is the same as the number of V-type feed devices (5-2).

7. The intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas according to claim 1, characterized in that, The number of the reactor humidity monitoring network (7) is the same as the number of the dual-fluid spray guns used in the uniform humidification device (6), and the dual-fluid spray guns are evenly arranged within a 360-degree range of the reactor straight section.

8. The intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas according to claim 7, characterized in that, The included angle between adjacent dual-fluid spray guns is controlled at 45~60°.

9. The intelligent regulating reaction device for semi-dry desulfurization of aluminum electrolysis flue gas according to any one of claims 1 to 8, characterized in that, It also includes a central control system, which is electrically connected to the reactor pressure monitoring network (4), the flow regulating device (5-1), the reactor humidity monitoring network (7) and the uniform humidification device (6), respectively, to receive the monitoring data of the reactor pressure monitoring network (4) and the reactor humidity monitoring network (7), and to control the operating parameters of the flow regulating device (5-1) and the uniform humidification device (6) according to the monitoring data.

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