Online discharging device for fixed bed desulfurization

Abstract

The utility model provides a fixed bed desulfurization on-line unloading device which comprises a reactor, the reactor comprises a gas outlet, a demister, a transmission assembly, a stirrer, a feed port, a discharge port, an annular groove, a grid frame and a gas inlet from top to bottom, and the outer side of the reactor further comprises a temperature pressure gauge and a motor; the stirrer comprises a cross-shaped supporting rod, a roller and a stirring rod; the rollers are arranged at the ports of the cross-shaped supporting rods; and the stirring rods are respectively arranged in the middle of four side rod bodies of the cross-shaped supporting rod. According to the utility model, the stirrer is arranged above the grid frame for placing the desulfurizing agent, and in the flue gas desulfurization process, the transmission assembly is driven by the motor, so that the stirrer stirs the desulfurizing agent in the grid frame, the desulfurizing agent is in full contact with sulfur dioxide (SO2) in flue gas, the chemical reaction speed is accelerated, and the desulfurization efficiency is improved. The utilization rate and the desulfurization efficiency of the desulfurizer are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization devices, specifically an on-line discharging device for fixed-bed desulfurization. Background Art

[0002] Fixed-bed desulfurization technology is a common method in industrial flue gas desulfurization, mainly used to reduce the emission of sulfur dioxide (SO2) generated during the combustion of fossil fuels such as coal and oil. With the increasingly strict environmental protection regulations, there are clear limits on the concentration of sulfur dioxide in industrial emissions. Fixed-bed desulfurization technology is one of the effective means to meet these regulatory requirements. Fixed-bed desulfurization usually uses alkaline absorbents (such as limestone, lime, sodium hydroxide, etc.) to convert SO2 in the flue gas into sulfates or other forms through chemical adsorption or chemical reactions, thereby achieving desulfurization. However, during the fixed-bed desulfurization process, some desulfurants may be discharged without being fully reacted, resulting in a low utilization rate of desulfurants. Summary of the Invention

[0003] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose an on-line discharging device for fixed-bed desulfurization.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions: An on-line discharging device for fixed-bed desulfurization, including a reactor. The reactor includes an air outlet, a demister, a transmission component, a stirrer, a feed inlet, a discharge outlet, an annular groove, a grid frame, and an air inlet from top to bottom; a temperature and pressure gauge and a motor are also arranged outside the reactor; the stirrer includes a cross support rod, rollers, and stirring rods; the rollers are arranged at the ports of the cross support rod; the stirring rods are respectively arranged in the middle of the four side rods of the cross support rod.

[0005] Preferably, the rollers on the stirrer are arranged in the annular groove.

[0006] Preferably, the demister is evenly distributed with partitions, in a herringbone shape, arranged in a staggered manner up and down.

[0007] Preferably, the motor also includes a speed reducer.

[0008] Preferably, the transmission component includes a support frame, a gear, a transmission belt, a bearing, and a rotating shaft. The support frame is a hollow square metal frame, arranged between the demister and the stirrer; the bearing is arranged in the middle of the support frame; the gear is arranged above the bearing; the transmission belt meshes with the gear and is connected to the speed reducer on the motor; the rotating shaft is arranged at the lowest end of the bearing and is connected to the stirrer.

[0009] Preferably, the feed inlet and the discharge outlet are relatively arranged at both ends of the grid frame.

[0010] Preferably, the mesh size of the grid is smaller than the size of the desulfurizer.

[0011] Preferably, the distance between the lowest end of the stirring rod and the grid is 1-2 cm.

[0012] Preferably, the air inlet is connected to the flue gas exhaust pipe, and the air outlet is connected to the subsequent treatment equipment.

[0013] Preferably, the reactor as a whole is made of corrosion-resistant metal material.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In the present utility model, by arranging a stirrer above the grid for placing the desulfurizer, during the flue gas desulfurization process, the motor drives the transmission component, so that the stirrer stirs the desulfurizer in the grid, enabling the desulfurizer to be in full contact with sulfur dioxide (SO2) in the flue gas, accelerating the speed of the chemical reaction, and improving the utilization rate of the desulfurizer and the desulfurization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present utility model.

[0017] Figure 2 It is a schematic diagram of the structure of the demister of the first embodiment of the present utility model.

[0018] Figure 3 It is a schematic diagram of the structure of the stirrer of the first embodiment of the present utility model.

[0019] Figure 4 It is a schematic diagram of the structure of the grid of the first embodiment of the present utility model.

[0020] Figure 5 It is a schematic diagram of the structure of the transmission component of the first embodiment of the present utility model.

[0021] Reference numerals: 1 - reactor; 100 - air outlet; 200 - demister; 300 - transmission component; 400 - stirrer; 500 - feed inlet; 600 - discharge outlet; 700 - annular groove; 800 - grid; 900 - air inlet; 11 - temperature and pressure gauge; 12 - motor; 301 - support frame; 302 - gear; 303 - transmission belt; 304 - bearing; 305 - rotating shaft; 401 - cross support rod; 402 - roller; 403 - stirring rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application, as follows.

[0023] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , the present utility model provides an on-line discharging device for fixed bed desulfurization, including a reactor 1, the reactor 1 from top to bottom includes an air outlet 100, a demister 200, a transmission assembly 300, a stirrer 400, a feed inlet 500, a discharge outlet 600, an annular groove 700, a grid frame 800 and an air inlet 900; A temperature and pressure gauge 11 and a motor 12 are also arranged outside the reactor 1; The stirrer 400 includes a cross support rod 401, rollers 402 and stirring rods 403; The rollers 402 are arranged at the ports of the cross support rod 401; The stirring rods 403 are respectively arranged in the middle of the four side rods of the cross support rod 401.

[0024] Preferably, the rollers on the stirrer 400 are arranged in the annular groove 700. So that the stirrer 400 can rotate under the drive of the transmission assembly during the desulfurization process.

[0025] Preferably, the demister 200 is evenly distributed with partition plates 201, in a herringbone shape, arranged in a staggered manner up and down. Prevent some fine particles in the flue gas from being carried out.

[0026] Preferably, the motor 12 also includes a speed reducer. The function of the speed reducer is to reduce the high-speed rotation speed of the motor and increase the torque at the same time to meet the driving requirements of the transmission belt.

[0027] Preferably, the transmission assembly 300 includes a support frame 301, a gear 302, a transmission belt 303, a bearing 304 and a rotating shaft 305. The support frame 301 is a hollow square metal frame arranged in the middle of the demister 200 and the stirrer 400; The bearing 304 is arranged in the middle of the support frame 301; The gear 302 is arranged above the bearing 304; The transmission belt 303 meshes with the gear 302 and is connected to the speed reducer on the motor 12; The rotating shaft 305 is arranged at the lowest end of the bearing 304 and is connected to the stirrer 400. The motor 12 provides power, and its rotational motion is transmitted to the transmission belt 303 through the speed reducer, and then drives the rotation of the gear 302, so that the rotating shaft 305 rotates.

[0028] Preferably, the feed inlet 500 and the discharge outlet 600 are relatively arranged at both ends of the grid frame 800. It is convenient for filling before desulfurization and discharging after desulfurization.

[0029] Preferably, the mesh holes of the grid frame 800 are smaller than the size of the desulfurizer. Prevent the desulfurizer from falling through the mesh holes and also facilitate the passage of flue gas.

[0030] Preferably, the bottom end of the stirring rod 403 is 1-2 cm away from the grid frame 800. This can prevent the stirring rod 403 from directly contacting the bottom of the grid frame 800, reducing wear and damage, and also preventing the reaction from being affected by overheating due to friction.

[0031] Preferably, the air inlet 900 is connected to the flue gas exhaust pipe, and the air outlet 100 is connected to the subsequent treatment equipment.

[0032] Preferably, the reactor 1 is made of corrosion-resistant metal material as a whole. This can extend the service life of the reactor 1, reduce the corrosion of the internal devices of the reactor 1 by sulfur dioxide (SO2) in the flue gas, and reduce the replacement frequency and cost.

[0033] Before flue gas desulfurization, connect the air inlet 900 to the flue gas exhaust pipe, connect the air outlet 100 to the subsequent treatment equipment, then place the desulfurizer on the grid frame 800 through the feed port 500. After filling, close the feed port 500, then open the air inlet 900, and then turn on the motor 12. At this time, the motor 12 provides power, and its rotational motion is transmitted to the drive belt 303 through the speed reducer, thereby driving the rotation of the gear 302, causing the rotating shaft 305 to rotate. Since the rotating shaft 305 is connected to the stirrer 400, under the drive of the transmission component 300, the stirrer 400 stirs the desulfurizer on the grid frame 800, enabling the desulfurizer on the grid frame 800 to be stirred, ensuring sufficient contact between the desulfurizer and sulfur dioxide (SO2) in the flue gas, accelerating the chemical reaction rate, improving the utilization rate of the desulfurizer and the desulfurization efficiency. After the flue gas enters the reactor 1, it undergoes a desulfurization reaction with the desulfurizer on the grid frame 800. The desulfurized flue gas passes through the demister 200, which can prevent some fine particles in the flue gas from being carried out, and finally enters the subsequent treatment equipment through the air outlet 100 for the next operation. After the desulfurization is completed, the temperature and pressure inside the reactor 1 are detected by the temperature and pressure gauge 11 outside the reactor 1. When it drops to a certain level, open the discharge port 600 to take out the reacted desulfurizer, and then load new desulfurizer to carry out the next set of desulfurization.

[0034] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fixed bed desulfurization online unloading device, comprising a reactor (1), wherein the reactor (1) comprises, from top to bottom, an air outlet (100), a demister (200), a transmission assembly (300), an agitator (400), a feed inlet (500), a discharge outlet (600), an annular groove (700), a grid frame (800) and an air inlet (900); a temperature and pressure gauge (11) and a motor (12) are also provided outside the reactor (1), characterized in that: The stirrer (400) comprises a cross support rod (401), a roller (402) and a stirring rod (403); the roller (402) is arranged at the end of the cross support rod (401); and the stirring rod (403) is respectively arranged in the middle of the four-sided rod body of the cross support rod (401).

2. The fixed bed desulfurization online unloading device according to claim 1, characterized in that: The roller on the stirrer (400) is arranged in the annular groove (700).

3. The fixed bed desulfurization online unloading device according to claim 1, characterized in that: The demister (200) is evenly distributed with partitions (201) in a herringbone shape and arranged in an interlaced manner up and down.

4. The fixed bed desulfurization online unloading device according to claim 1, characterized in that: The motor (12) also includes a reducer.

5. The fixed bed desulfurization online unloading device according to claim 1, characterized in that: The transmission assembly (300) comprises a support frame (301), a gear (302), a transmission belt (303), a bearing (304) and a rotating shaft (305); the support frame (301) is a hollow square metal frame, and is arranged between the demister (200) and the agitator (400); the bearing (304) is arranged in the middle of the support frame (301); the gear (302) is arranged above the bearing (304); the transmission belt (303) and the gear (302) are engaged with each other and are connected to a reducer on the motor (12); the rotating shaft (305) is arranged at the lowest end of the bearing (304) and is connected to the agitator (400).

6. The fixed bed desulfurization online unloading device according to claim 1, characterized in that: The feed port (500) and the discharge port (600) are arranged oppositely at two ends of the grid frame (800).

7. The fixed bed desulfurization online unloading device according to claim 1, characterized in that: The mesh of the grid frame (800) is smaller than the size of the desulfurizer.

8. The fixed bed desulfurization online unloading device according to claim 1, characterized in that: The lowest end of the stirring rod (403) is 1-2 cm away from the grid frame (800).

9. The fixed bed desulfurization online unloading device according to claim 1, characterized in that: The air inlet (900) is connected to a smoke exhaust pipe, and the air outlet (100) is connected to subsequent processing equipment.

10. The fixed bed desulfurization online unloading device according to claim 1, characterized in that: The reactor (1) is entirely made of corrosion-resistant metal material.

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