Automatic loading system for flue gas wet desulphurization dehydrated gypsum

Abstract

The utility model discloses an automatic loading system for flue gas wet desulphurization dehydrated gypsum, which relates to the technical field of flue gas treatment wet desulphurization, and comprises a first rack and a second rack, a vacuum dehydrator is fixedly arranged on the first rack, the vacuum dehydrator is communicated with a gypsum cyclone and a gas-water separation tank, and the gypsum cyclone is communicated with the gas-water separation tank. A conveyor is arranged at the dehydrated gypsum output end of the vacuum dehydrator, a first sealing unloader is arranged at the output end of the conveyor, a dehydrated gypsum storage box is arranged below the first sealing unloader, and the dehydrated gypsum storage box is arranged on the second rack; gypsum passes through the first sealed discharger, the dehydrated gypsum storage box, the discharging hopper, the second sealed discharger and the discharging pipe, the process is set in a sealed mode, and the environmental pollution risk is effectively reduced; the length-adjustable discharging pipe is arranged and can be matched with different vehicle heights, loading can be completed only by moving the vehicle back and forth, and the labor intensity of manual carrying is reduced; the dewatered gypsum storage box made of glass fiber reinforced plastics is arranged, so that the gypsum is prevented from corroding the dewatered gypsum storage box, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wet desulfurization technology for flue gas treatment, and in particular to an automated loading system for gypsum in wet desulfurization and dehydration of flue gas. Background Technology

[0002] The limestone-gypsum flue gas desulfurization process dominates the wet desulfurization field due to its mature technology, high desulfurization efficiency (typically exceeding 90%), wide availability of raw materials, and low cost. Gypsum, a desulfurization byproduct generated during production, can be dehydrated and used as a cement retarder, soil conditioner, and raw material for gypsum building materials, thus achieving resource utilization.

[0003] However, many challenges remain in the gypsum transportation process: dust is easily generated during storage, causing environmental pollution; manual loading is inefficient and labor-intensive; and storage equipment is susceptible to corrosion by gypsum, leading to high maintenance costs. Therefore, developing an efficient and environmentally friendly automated loading system for dehydrated gypsum has become an urgent issue for the industry. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an automated loading system for wet flue gas desulfurization and dehydration gypsum, which overcomes the shortcomings of existing systems such as environmental pollution, high labor intensity and high maintenance costs; and achieves the goals of environmental protection, low labor intensity and low maintenance costs.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: an automated loading system for wet flue gas desulfurization and dehydration gypsum, including a first frame and a second frame. A vacuum dehydrator is fixedly installed on the first frame. The vacuum dehydrator is connected to a gypsum hydrocyclone and a gas-water separator. A conveyor is provided at the output end of the dehydrated gypsum of the vacuum dehydrator. A first sealed unloader is provided at the output end of the conveyor. A dehydrated gypsum storage tank is provided below the first sealed unloader. The dehydrated gypsum storage tank is installed on the second frame.

[0006] Furthermore, the gypsum hydrocyclone has a gypsum slurry inlet on one side, a first water outlet at the top, and a gypsum outlet at the bottom.

[0007] Furthermore, the vacuum dewatering machine is equipped with a first exhaust port, a discharge port at the bottom, an air inlet on the gas-water separator, the first exhaust port being connected to the air inlet, a second exhaust port at the top of the gas-water separator, and a second water outlet at the bottom of the gas-water separator.

[0008] Furthermore, the drive end of the conveyor is equipped with a motor, which is connected to the drive drum of the conveyor through a reducer to provide power to the conveyor. A backstop is also provided on the shaft of the drive drum to prevent the conveyor from reversing.

[0009] Furthermore, the dehydrated gypsum storage tank is equipped with a steam insulation and heat tracing pipeline. The steam insulation and heat tracing pipeline is fixed to the outer wall of the dehydrated gypsum storage tank in the form of a spiral coil. The steam insulation and heat tracing pipeline can maintain the temperature of the outer wall of the dehydrated gypsum storage tank at 50±5℃.

[0010] Furthermore, it also includes a controller. Below the dehydrated gypsum storage tank is a discharge hopper, which is divided into several compartments. Each compartment is connected to the dehydrated gypsum storage tank by a pneumatic gate valve. The controller controls the opening and closing of each pneumatic gate valve to distribute gypsum from the dehydrated gypsum storage tank into different compartments. Each compartment is equipped with a second sealing discharge device at the bottom.

[0011] Furthermore, the bottom of the second sealing unloader is connected to an adjustable-length unloading pipe.

[0012] Furthermore, the first sealing unloader is made of stainless steel.

[0013] Furthermore, the dehydrated gypsum storage tank is made of fiberglass.

[0014] This utility model adopts the above technical solution and has the following advantages compared with the prior art: The gypsum is discharged through a first sealed unloader, a dehydrated gypsum storage tank, a discharge hopper, a second sealed unloader, and a discharge pipe. This process is enclosed, eliminating the gypsum dust emission caused by traditional open storage and effectively reducing the risk of environmental pollution. An adjustable-length discharge pipe is provided to match different vehicle heights, allowing vehicles to complete loading simply by moving back and forth, significantly reducing the labor intensity of manual handling. A fiberglass dehydrated gypsum storage tank is used to prevent gypsum corrosion and reduce maintenance costs. Steam-insulated heating pipelines heat the outer wall of the fiberglass dehydrated gypsum storage tank, preventing gypsum from clumping or sticking to the wall in low-temperature winter conditions and ensuring continuous and stable system operation. A combination of a compartmentalized discharge hopper and a pneumatic gate valve allows for flexible adjustment of gypsum distribution via a controller, eliminating the complex structure of traditional mechanical dispensing devices and reducing manufacturing costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an automated loading system for wet flue gas desulfurization and dehydration gypsum in an embodiment of this utility model;

[0016] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle.

[0017] In the diagram: 1-Dehydrated gypsum storage tank, 2-Discharge hopper, 3-Conveyor, 4-First sealed discharger, 5-First frame, 6-Gypsum hydrocyclone, 7-Vacuum dewatering machine, 8-Second frame, 9-Discharge pipe, 10-Steam insulation and heat tracing pipeline, 12-Second sealed discharger, 13-Gypsum slurry inlet, 14-First water outlet, 15-Gypsum outlet, 16-Gas-water separator, 17-First exhaust port, 18-Second water outlet, 19-Second exhaust port, 20-Air inlet, 21-Discharge port. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0019] Examples, such as Figure 1-2 As shown, an automated loading system for gypsum in a wet flue gas desulfurization and dehydration process includes a first frame 5 and a second frame 8. A vacuum dehydrator 7 is fixedly mounted on the first frame 5. A gypsum hydrocyclone 6 is connected above the vacuum dehydrator 7. A gypsum slurry inlet 13 is provided on one side of the gypsum hydrocyclone 6. A first water outlet 14 is provided at the upper part of the gypsum hydrocyclone 6, and a gypsum outlet 15 is provided at the bottom. The gypsum slurry after wet flue gas desulfurization in the absorption tower or reaction tank is transported through the gypsum slurry inlet 13 to the gypsum hydrocyclone 6. The gypsum hydrocyclone 6 uses centrifugal force to initially separate the solid particles and water in the gypsum slurry. The separated water is discharged through the first water outlet 14, and the separated high-concentration gypsum slurry is sent to the vacuum dehydrator 7 for dehydration through the gypsum outlet 15.

[0020] The vacuum dewatering machine 7 is provided with a first exhaust port 17 and a discharge port 21 at the bottom. The vacuum dewatering machine 7 is connected to a gas-water separator 16. The gas-water separator 16 is provided with an air inlet 20. The first exhaust port 17 is connected to the air inlet 20. The top of the gas-water separator 16 is provided with a second exhaust port 19, and the bottom of the gas-water separator 16 is provided with a second water outlet 18.

[0021] The vacuum dehydrator 7 and the gypsum hydrocyclone 6 are existing technologies and will not be described in detail here.

[0022] The vacuum dehydrator 7 has a conveyor 3 at its dehydrated gypsum output end. The drive end of the conveyor 3 is equipped with a motor (not shown in the figure). The motor is connected to the drive roller of the conveyor 3 via a reducer, providing power to the conveyor 3. A backstop (not shown in the figure) is also installed on the drive roller shaft. The backstop prevents the conveyor 3 from reversing. When the motor loses power or the load is too large, causing the conveyor 3 to slide in reverse, the backstop locks instantly, preventing gypsum backflow, damage to the conveyor 3, and other safety accidents. The motor, drive roller, and backstop are existing technologies and will not be described in detail here.

[0023] The output end of the conveyor 3 is equipped with a first sealed unloader 4. Below the first sealed unloader 4 is a dehydrated gypsum storage tank 1. The dehydrated gypsum storage tank 1 is made of fiberglass. The dehydrated gypsum storage tank 1 is mounted on the second frame 8. The dehydrated gypsum is conveyed into the dehydrated gypsum storage tank 1 through the first sealed unloader 4. The dehydrated gypsum storage tank 1 is equipped with a steam insulation and heat tracing pipeline 10. The steam insulation and heat tracing pipeline 10 can be fixed to the outer wall of the dehydrated gypsum storage tank 1 in the form of a spiral coil to directly heat the outer wall of the dehydrated gypsum storage tank 1. The steam insulation and heat tracing pipeline 10 can maintain the temperature of the outer wall of the dehydrated gypsum storage tank 1 at 50±5℃ to prevent the gypsum from freezing and hardening inside the dehydrated gypsum storage tank 1 when the temperature is low in winter.

[0024] An automated loading system for wet flue gas desulfurization and dehydration gypsum includes a controller. A discharge hopper 2 is located below the dehydrated gypsum storage tank 1. The discharge hopper 2 is divided into several compartments. Each compartment is connected to the dehydrated gypsum storage tank 1 by a pneumatic gate valve. The controller controls the opening and closing of each pneumatic gate valve to distribute gypsum from the dehydrated gypsum storage tank 1 into different compartments. Each compartment has a second sealing discharge device 12 at its bottom for branch discharge. The bottom of the second sealing discharge device 12 is connected to an adjustable-length discharge pipe 9 to accommodate different truck heights. The second sealing discharge device 12 delivers the gypsum discharged from the compartment to the discharge pipe 9 below, ensuring that the material does not deviate or spill. The discharge pipe 9 and the second sealing discharge device 12 form a continuous, sealed channel to prevent dust overflow.

[0025] The first sealing unloader 4 is made of stainless steel.

[0026] Working principle: First, the gypsum slurry after wet flue gas desulfurization in the absorption tower or reaction tank is sent to the gypsum hydrocyclone 6 through the gypsum slurry inlet 13. The gypsum hydrocyclone 6 uses centrifugal force to initially separate the solid particles and water in the gypsum slurry. The separated water is discharged through the first outlet 14. The separated high-concentration gypsum slurry is sent to the vacuum dewatering machine 7 through the gypsum outlet 15 for dehydration. During the dehydration process, the water vapor formed by water evaporation and a small amount of air are mixed and enter the gas-water separator 16 through the first exhaust port 17 and the air inlet 20. After the mixed gas enters the separator, the dry gas is discharged from the second exhaust port 19, and the separated liquid water is discharged through the second outlet 18.

[0027] After dehydration, the gypsum falls into the conveyor 3 through the discharge port 21. The motor drives the conveyor 3 to transport the gypsum to the dehydrated gypsum storage tank 1. When the temperature is low, the steam insulation and heat tracing pipeline 10 heats the outer wall of the dehydrated gypsum storage tank 1 to prevent the gypsum from clumping and adhering to the dehydrated gypsum storage tank 1.

[0028] When loading is required, the vehicle is parked below the unloading pipe 9. The corresponding pneumatic gate valve is opened by controlling the controller, allowing gypsum to enter the unloading hopper 2 chamber from the dehydrated gypsum storage tank 1. The gypsum is then transported to the truck bed through the second sealed unloader 12 and the unloading pipe 9 below the chamber. The vehicle can be adjusted by moving it back and forth during loading. When the specified loading amount is reached, the pneumatic gate valve is closed by controlling the controller, and the vehicle loading is complete.

[0029] The gypsum is discharged through a first sealed unloader 4, a dehydrated gypsum storage tank 1, an unloading hopper 2, a second sealed unloader 12, and an unloading pipe 9. This closed system eliminates the risk of gypsum dust dispersion caused by traditional open storage, effectively reducing environmental pollution risks. The adjustable-length unloading pipe 9 can accommodate different vehicle heights, allowing vehicles to load simply by moving back and forth, significantly reducing the labor intensity of manual handling. The dehydrated gypsum storage tank 1 is made of fiberglass, preventing gypsum corrosion and reducing maintenance costs. The steam-insulated heating pipeline 10 heats the outer wall of the fiberglass dehydrated gypsum storage tank 1, preventing gypsum from clumping or sticking to the wall in low-temperature winter conditions and ensuring continuous and stable system operation. The use of a compartmentalized unloading hopper 2 combined with a pneumatic gate valve allows for flexible adjustment of gypsum distribution via a controller, eliminating the complex structure of traditional mechanical dispensing devices and reducing manufacturing costs.

[0030] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A flue gas wet desulphurization dewatered gypsum automated loading system, characterized in that: The machine includes a first frame (5) and a second frame (8). A vacuum dehydrator (7) is fixedly installed on the first frame (5). The vacuum dehydrator (7) is connected to a gypsum hydrocyclone (6) and a gas-water separator (16). A conveyor (3) is provided at the output end of the dehydrated gypsum of the vacuum dehydrator (7). A first sealed unloader (4) is provided at the output end of the conveyor (3). A dehydrated gypsum storage tank (1) is provided below the first sealed unloader (4). The dehydrated gypsum storage tank (1) is installed on the second frame (8).

2. The flue gas wet desulphurization dewatered gypsum automatic loading system according to claim 1, characterized in that: The gypsum hydrocyclone (6) has a gypsum slurry inlet (13) on one side, a first water outlet (14) at the top, and a gypsum outlet (15) at the bottom.

3. The automatic loading system for flue gas desulfurization and dewatering gypsum of claim 1, wherein: The vacuum dehydrator (7) is provided with a first exhaust port (17) and a discharge port (21) at the bottom. The gas-water separator (16) is provided with an air inlet (20). The first exhaust port (17) is connected to the air inlet (20). The gas-water separator (16) is provided with a second exhaust port (19) at the top and a second water outlet (18) at the bottom.

4. The flue gas wet desulphurization dewatered gypsum automatic loading system according to claim 1, characterized in that: The drive end of the conveyor (3) is equipped with a motor, which is connected to the drive roller of the conveyor (3) through a reducer to provide power to the conveyor (3). A backstop is also provided on the shaft of the drive roller to prevent the conveyor (3) from reversing.

5. The automatic loading system for flue gas desulfurization and dewatering gypsum of claim 1, wherein: The dehydrated gypsum storage tank (1) is equipped with a steam insulation and heat tracing pipeline (10). The steam insulation and heat tracing pipeline (10) is fixed to the outer wall of the dehydrated gypsum storage tank (1) in the form of a spiral coil. The steam insulation and heat tracing pipeline (10) can maintain the temperature of the outer wall of the dehydrated gypsum storage tank (1) at 50±5℃.

6. The flue gas wet desulphurization dewatered gypsum automatic loading system according to claim 1, characterized in that: It also includes a controller. A discharge hopper (2) is provided below the dehydrated gypsum storage tank (1). The discharge hopper (2) is divided into several compartments. Each compartment is connected to the dehydrated gypsum storage tank (1) by a pneumatic gate valve. The controller controls the opening and closing of each pneumatic gate valve to distribute gypsum from the dehydrated gypsum storage tank (1) into different compartments. Each compartment is equipped with a second sealing discharge device (12) at the bottom.

7. The automated loading system for wet flue gas desulfurization and dehydration gypsum as described in claim 6, characterized in that: The bottom of the second sealing unloader (12) is connected to an adjustable length unloading pipe (9).

8. The automated loading system for wet flue gas desulfurization and dehydration gypsum as described in claim 1, characterized in that: The first sealing unloader (4) is made of stainless steel.

9. The automated loading system for wet flue gas desulfurization and dehydration gypsum as described in claim 6, characterized in that: The dehydrated gypsum storage tank (1) is made of fiberglass.

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