Sodium bicarbonate feeding device

Abstract

The utility model discloses a baking soda feeding device which comprises a grinding machine feeding hopper (1). A hopper feed port (5) and a pressure detection device (6) are arranged at the upper part of the grinder feed hopper (1); the hopper feeding port (5) is provided with an iron remover, the side face and the bottom face of the iron remover are of a grid type structure, and the top face of the iron remover is open; the feeding hopper has the beneficial effects that the iron remover is arranged at the feeding hole of the feeding hopper of the grinding machine, so that impurities possibly existing in the feeding process can be effectively removed; and the pressure detection device is arranged to detect the negative pressure in the feeding hopper of the grinding machine, so that material dust is prevented from overflowing.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue gas treatment, in particular to a baking soda feeding device. Background Art

[0002] The baking soda dry desulfurization system reacts ground baking soda with sulfur dioxide in the flue gas, which is then filtered through a bag filter to remove sulfur dioxide and particulate matter from the flue gas. Baking soda dry desulfurization technology has gained widespread popularity due to its simplicity, reliable operation, and high desulfurization efficiency. In this flue gas desulfurization process, baking soda desulfurizer enters the grinder hopper and is then ground along with the air from the grinding fan inlet. The resulting ultra-fine baking soda powder is then sprayed into the coke oven flue gas through a grading system and a conveying fan. After a thermal reaction, the baking soda desulfurizer chemically reacts with sulfur dioxide in the flue gas, removing the sulfur dioxide from the flue gas.

[0003] However, to improve desulfurization and denitrification, the desulfurizers purchased are often finer, which is prone to dust generation. Current desulfurizer grinders are often not equipped with a feeding and dust removal device. The use of a separate small dust collector presents several issues: it requires an additional power supply and is installed below the hopper. To inspect or remove iron attracted by the magnet, the entire grinding equipment must be shut down and the iron remover removed, a cumbersome, labor-intensive process that requires significant floor space. Utility Model Content

[0004] The utility model is intended to solve at least one of the technical problems in the prior art. To this end, the utility model proposes a baking soda feeding device.

[0005] To achieve the above-mentioned object, according to an embodiment of the first aspect of the present utility model, a baking soda feeding device is provided, comprising: a grinder feed hopper;

[0006] A hopper feed port and a pressure detection device are provided on the upper portion of the grinder feed hopper;

[0007] An iron remover is provided at the feed port of the hopper. The side surface and bottom surface of the iron remover are grid structures, and the top surface of the iron remover is open.

[0008] Furthermore, the grinding machine feed hopper is also connected to a hopper internal negative pressure control structure composed of a grinding conveying fan, a first electric valve and a second electric valve interlocked to achieve a negative pressure state in the hopper when feeding the material to prevent dust from overflowing;

[0009] Since the hopper volume is relatively large and the amount of material discharged is large, the negative pressure state in the hopper may not be maintained continuously during the loading process, resulting in dust overflow during the loading process. Therefore, the negative pressure state in the hopper needs to be designed and controlled.

[0010] Furthermore: the size of the hopper feed port is designed to be a square with any side length of 400mm-800mm;

[0011] The plane shape of the iron remover is consistent with the size of the hopper feed port, and the height is 400mm-800mm, and the specific height is the same as the value of the side length of the above square;

[0012] The design of the feed port needs to meet the requirements of the feeding volume. Generally, an opening between 400mm-800mm can ensure the efficiency of loading. The cube design facilitates the unification of the grid structure of each surface, which is more convenient during welding.

[0013] Furthermore, the grid structure of the iron remover may be a plurality of layers, and the grids of the grid structure are squares with a spacing of 10 mm to 50 mm.

[0014] Furthermore: the iron remover is made of easily magnetized steel material;

[0015] The main purpose is to use the strong magnetic force of the magnet to magnetize the mesh structure of the feed opening composed of magnetized steel materials. Once the baking soda material contains iron, it will be firmly absorbed by the mesh structure to achieve the purpose of iron removal.

[0016] Further: the pressure detection device includes a plurality of pressure alarms;

[0017] Since the negative pressure state cannot be judged manually, in order to ensure that the staff can obtain the negative pressure state in time to adjust the electronic control valve of the device, it is necessary to install several pressure detection devices that can detect the negative pressure state inside the hopper to remind the staff.

[0018] Furthermore, a soft sealing gasket is installed at the edge where the feed port of the hopper is connected to the iron remover, and the material is selected from a soft rubber gasket and a sponge gasket;

[0019] The purpose is to achieve a good seal between the feed port and the bag and improve the dust control effect.

[0020] Furthermore: the easily magnetizable steel material is ferrite magnetic steel.

[0021] Compared with the existing technology, the beneficial effects of the present invention are: an iron remover is set at the feed port of the grinder feed hopper, which can effectively remove impurities that may exist in the feeding process; and a pressure detection device is set to detect the negative pressure in the grinder feed hopper to avoid overflow of dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1This is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a structural principle diagram of the iron remover of the utility model;

[0025] Figure 3 This is a cross-sectional view of the inner grid structure of the iron remover of the present invention (grid spacing is 30 mm);

[0026] Figure 4 This is a cross-sectional view of the outer grid structure of the iron remover of the present invention (grid spacing is 20 mm);

[0027] Figure 5 This is a cross-sectional view of a cross section of the iron remover of the present invention.

[0028] In the figure: 1. Grinding machine feed hopper; 2. Grinding machine inlet negative pressure pipeline; 3. Grinding machine; 4. Grinding conveying fan; 5. Hopper feed port; 6. Pressure detection device; 7. Feeding auxiliary device; 8. First electric valve; 9. Second electric valve. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] like Figure 1 As shown, a baking soda feeding device includes: a grinder feed hopper 1; a hopper feed port 5 and a pressure detection device 6 are arranged on the upper part of the grinder feed hopper 1; an iron remover is arranged at the hopper feed port 5, the side and bottom surfaces of the iron remover are grid structures, and the top surface of the iron remover is open.

[0031] Specifically:

[0032] The grinding machine feed hopper 1 is also connected to the internal negative pressure control structure of the hopper, which is composed of the grinding conveying fan 4, the first electric valve 8 and the second electric valve 9. When the hopper is fed, the negative pressure state is maintained in the hopper to prevent the dust from overflowing. Among them, the first electric valve 8, the grinding machine inlet negative pressure pipeline 2, the grinding machine 3 and the grinding conveying fan 4 mainly provide a negative pressure environment for the interior of the grinding machine feed hopper 1. The air volume of the grinding conveying fan 4 can be controlled to 9000m 3 / h~10000m 3 / h, further maintaining the negative pressure environment in a stable state.

[0033] In order to ensure that the negative pressure environment can be intuitively understood by the staff, several pressure detection devices 6 are set on the upper part of the grinder feed hopper 1, including several pressure alarms. The pressure detection range is set to -50Pa~-200Pa. If it exceeds this range, an alarm will be triggered to prompt the staff to adjust the grinding conveying fan 4, the first electric valve 8 and the second electric valve 9.

[0034] The size of the hopper feed opening 5 is designed to be a square with any side length of 400mm-800mm. Its size can be designed according to the current production equipment and production needs, which can be: 400mm, 500mm, 600mm, 700mm and 800mm. In order to enable the iron remover to be installed in the hopper feed opening 5, the plane shape of the iron remover is consistent with the size of the hopper feed opening 5. Since the overall design is a cube, the height of the iron remover is the same as the side length of the hopper feed opening 5. The length of the hopper feed opening 5 is the same as the side length of the hopper feed opening 5. The size is designed according to the production equipment and feed amount of the grinder feed hopper 1. The feed efficiency and the influence of the opening area of ​​the hopper feed port 5 on the negative pressure inside the grinder feed hopper 1 need to be comprehensively considered. The square regular design of the hopper feed port 5 is for the convenience of staff to dump the feed. A soft sealing gasket is also installed on the edge where the hopper feed port 5 is connected to the iron remover. The material is selected from any one of a soft rubber gasket and a sponge pad; the purpose is to achieve a good seal between the feed port and the material bag and improve the dust control effect.

[0035] The iron remover is installed at the hopper feed port 5, and is designed as a cube with the same side length as the hopper feed port 5, and one side of the cube is open as the top surface, that is, as the feed side, and the other sides are grid structures. The design of the iron remover cube is convenient for unifying the grid structure of each side and facilitating the production of components; it is more convenient when welding, and the grid structure can be several layers, and the grid of the grid structure is a square with a spacing of 10mm-50mm, which can be: 10mm, 20mm, 30mm, 40mm and 50mm, and as Figure 3-5 As shown, Figure 3 A plan view of a grid structure with a grid spacing of 30 mm. Figure 4 is a plan view of a grid structure with a grid spacing of 20 mm. Figure 5This is a schematic diagram of two grid structures after being respectively set in the inner layer and the outer layer, that is, a schematic diagram of the two grid structures after being stacked. The rule for stacking the two grid structures is: the grid spacing of the inner grid structure is larger than the grid spacing of the outer grid structure. If there are several layers of grid structures, the grid structures are also set according to this rule to achieve the purpose of layer-by-layer filtration. It is used to deal with the situation where there are too many types and quantities of debris in the feed. In addition to iron, the debris may also include ropes at the bottom of the bag, bag wires, etc.; in addition, more layers of grid structures can be designed according to different situations; the material of the iron remover is made of easily magnetized steel material, specifically ferrite magnet steel, which is characterized by not being easy to demagnetize after magnetization, and can retain magnetism for a long time, and can adsorb iron in baking soda materials.

[0036] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A baking soda feeding device, characterized in that: include: grinder feed hopper (1); A hopper feed port (5) and a pressure detection device (6) are provided on the upper portion of the grinder feed hopper (1); The hopper feed port (5) is provided with an iron remover, the side and bottom surfaces of the iron remover are grid structures, and the top surface of the iron remover is open.

2. A baking soda feeding device according to claim 1, characterized in that: The grinding machine feed hopper (1) is also connected to a hopper internal negative pressure control structure composed of a grinding conveying fan (4), a first electric valve (8) and a second electric valve (9) interlocked to achieve a negative pressure state in the hopper when feeding the material to prevent the material dust from overflowing.

3. A baking soda feeding device according to claim 1, characterized in that: The size of the hopper feed port (5) is designed to be a square with any side length of 400mm-800mm; The planar shape of the iron remover is consistent with the size of the hopper feed port (5), and the height is 400mm-800mm.

4. A baking soda feeding device according to claim 3, characterized in that: The grid structure of the iron remover may be a plurality of layers, and the grids of the grid structure are squares with a spacing of 10 mm to 50 mm.

5. A baking soda feeding device according to claim 3, characterized in that: The iron remover is made of easily magnetizable steel.

6. A baking soda feeding device according to claim 1, characterized in that: The pressure detection device (6) includes a plurality of pressure alarms.

7. A baking soda feeding device according to claim 1, characterized in that: A soft sealing gasket is also installed at the edge where the hopper feed port (5) is connected to the iron remover, and the material is selected from a soft rubber gasket and a sponge gasket.

8. A baking soda feeding device according to claim 5, characterized in that: The easily magnetizable steel material is ferrite magnetic steel.

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