Dry desulfurization device for boiler flue gas

Abstract

The utility model discloses a boiler flue gas dry desulfurization device which comprises a desulfurization tank, a flue gas inlet pipe and a flue gas exhaust pipe are respectively arranged on two sides of the desulfurization tank, a manhole is arranged at the front end of the desulfurization tank, a material collecting box is arranged at the bottom end of the desulfurization tank, a medicament box is arranged on one side of the material collecting box, a discharge port is arranged at the bottom end of the medicament box, and a gas outlet is arranged at the bottom end of the medicament box. And a feeding pipe is mounted at the top end of the medicament box. By arranging the material collecting box, the medicament box, the feeding pipe, the feeding motor, the conveying pipe and the spiral packing auger, alkali powder is recycled, the spiral packing auger is driven to rotate by the operation of the feeding motor, the alkali powder in the medicament box is conveyed into the conveying pipe and is fed into the desulfurization tank from the top end, and under the action of gravity, the alkali powder in the medicament box is conveyed into the desulfurization tank. The alkali powder can fall into the material collecting box, and the alkali powder is guided into the chemical agent box by matching with the appearance of the material collecting box, so that the alkali powder is repeatedly used, and the loss and the use cost of the alkali powder are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler flue gas dry desulfurization, in particular to a boiler flue gas dry desulfurization device. Background Art

[0002] Biomass boiler is a type of boiler. A boiler that uses biomass energy as fuel is called a biomass boiler. It is divided into biomass steam boiler, biomass hot blast furnace, vertical biomass boiler, horizontal biomass boiler, etc. During the use of biomass boiler, biomass combustion will produce flue gas. The flue gas contains sulfur oxides. The flue gas is directly discharged into the atmosphere, causing atmospheric pollution. Sulfur oxides are inhaled into the body and are harmful to the human body. Generally, a boiler flue gas dry desulfurization device is used to treat the sulfides in the flue gas. Dry flue gas desulfurization is a method of removing sulfur dioxide from flue gas using powdered or granular adsorbents, absorbents or catalysts. In actual use, it is necessary to remove used alkali powder (adsorbent) and other materials from the device. It is difficult to fully recycle alkali powder (adsorbent) and other materials in a timely manner. The loss of alkali powder (adsorbent) and other materials is large, and the cost of use is high. Therefore, a boiler flue gas dry desulfurization device is provided. Utility Model Content

[0003] The purpose of the utility model is to provide a boiler flue gas dry desulfurization device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a boiler flue gas dry desulfurization device, comprising a desulfurization tank, with a smoke inlet pipe and a smoke exhaust pipe respectively arranged on both sides of the desulfurization tank, a manhole is arranged at the front end of the desulfurization tank, a collection box is installed at the bottom end of the desulfurization tank, and a medicine box is installed on one side of the collection box, a discharge port is arranged at the bottom end of the medicine box, a feeding pipe is installed at the top of the medicine box, and a feeding motor is installed at the top of the feeding pipe, a conveying pipe is installed on one side of the top of the feeding pipe, and the conveying pipe passes through the top of the desulfurization tank, a spiral auger is installed inside the feeding pipe, and a fixed connection is formed between the top of the spiral auger and the feeding motor.

[0005] Preferably, the outer wall of the collecting box is inclined toward one side of the medicine box, and the bottom ends of the feeding pipe and the spiral auger both extend to the interior of the medicine box.

[0006] Preferably, a driving motor is installed at the top of the desulfurization tank, and a rotating shaft is installed at the bottom of the driving motor, a distribution disc is installed at the bottom of the rotating shaft, and the distribution disc and the rotating shaft are both arranged at the top of the desulfurization tank.

[0007] Preferably, a distribution tube is provided at the bottom end of the distribution tray, and the distribution tube is provided in a plurality of groups. The distribution tubes are distributed in a ring shape at the bottom end of the distribution tray, and the cross section of the distribution tube is funnel-shaped.

[0008] Preferably, a sieve plate is installed inside the distribution tray, and blocks are provided on the inner side wall of the distribution tray, and the blocks are distributed at equal intervals on the inner side wall of the distribution tray, and a movable connection is formed between the sieve plate and the blocks.

[0009] Preferably, a control box is installed on the outside of the medicine box, and a display screen is installed on the control box, and a warning light is installed on one side of the control box.

[0010] Preferably, a pH sensor is installed inside the aggregate box, and the pH sensor and the warning light are electrically connected to the control box through wires.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) By providing a collection box, a reagent box, a feeding pipe, a feeding motor, a conveying pipe and a spiral auger, the recycling of alkali powder is realized. The operation of the feeding motor drives the spiral auger to rotate, and the alkali powder in the reagent box is transported to the inside of the conveying pipe, and then is put into the desulfurization tank from the top. Under the action of gravity, the alkali powder will fall into the inside of the collection box. With the shape of the collection box, the alkali powder is guided to the inside of the reagent box to realize the repeated use of the alkali powder, thereby reducing the loss and use cost of the alkali powder;

[0013] (2) By providing a driving motor, a distribution disc, a rotating shaft, a distribution pipe, a clamping block and a sieve plate, uniform distribution of alkali powder is achieved. The operation of the driving motor will drive the rotating shaft to drive the distribution disc to rotate, and the alkali powder will be transported to the inside of the distribution disc. With the distribution of the distribution pipe, the alkali powder is evenly distributed inside the desulfurization tank under the action of the rotating force, so that the alkali powder can fully contact with the flue gas and neutralize the acidic substances in the flue gas, thereby improving the desulfurization effect of the flue gas;

[0014] (3) The pH value sensor, control box, display screen and warning light are provided to detect the pH value of alkali powder. The operation of the pH value sensor can detect the alkali powder in real time. When the alkalinity of the alkali powder is low, the information will be sent to the control box and the number will be displayed on the display screen. According to the operating instructions below the system program, the warning light is controlled to flash, indicating that the alkalinity of the alkali powder is low, so that the alkali powder can be replaced in time, thereby improving the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a front view structural schematic diagram of the utility model;

[0017] Figure 2 It is a side view structural schematic diagram of the utility model;

[0018] Figure 3 It is a side cross-sectional structural schematic diagram of the utility model;

[0019] Figure 4 This is a schematic diagram of the partial structure of the cloth plate of the utility model when viewed from above;

[0020] Figure 5 It is a schematic diagram of a partial cross-sectional structure of a material distribution disc of the utility model in a front view.

[0021] Description of reference numerals in the figures:

[0022] 1. Desulfurization tank; 2. Smoke inlet pipe; 3. Driving motor; 4. Smoke exhaust pipe; 5. Manhole; 6. PH value sensor; 7. Discharge port; 8. Collecting box; 9. Reagent box; 10. Control box; 11. Display screen; 12. Feeding pipe; 13. Feeding motor; 14. Conveying pipe; 15. Warning light; 16. Feeding plate; 17. Rotating shaft; 18. Feeding pipe; 19. Auger; 20. Block; 21. Screen plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1-5 The utility model provides an embodiment: a boiler flue gas dry desulfurization device, comprising a desulfurization tank 1, a smoke inlet pipe 2 and a smoke exhaust pipe 4 are respectively arranged on both sides of the desulfurization tank 1, a manhole 5 is arranged at the front end of the desulfurization tank 1, a collection box 8 is installed at the bottom end of the desulfurization tank 1, and a medicine box 9 is installed on one side of the collection box 8, a discharge port 7 is arranged at the bottom end of the medicine box 9, a feeding pipe 12 is installed at the top of the medicine box 9, and a feeding motor 13 is installed at the top of the feeding pipe 12, and the feeding pipe 12 is provided with a feeding motor 13. A conveying pipe 14 is installed on one side of the top, and the conveying pipe 14 passes through the top of the desulfurization tank 1. A spiral auger 19 is installed inside the feeding pipe 12, and a fixed connection is formed between the top of the spiral auger 19 and the feeding motor 13. The outer wall of the collecting box 8 is inclined toward one side of the reagent box 9. The bottom ends of the feeding pipe 12 and the spiral auger 19 extend to the inside of the reagent box 9. The rotation of the spiral auger 19 can convey the alkali powder to the inside of the feeding pipe 12 and lift it to the top of the desulfurization tank 1.

[0026] Specifically, as shown in the figure, when in use, the feeding motor 13 is operated to drive the spiral auger 19 to rotate, and the alkali powder inside the reagent box 9 is transported to the inside of the conveying pipe 14, and is put into the inside of the desulfurization tank 1 from the top. Under the action of gravity, the alkali powder will fall into the inside of the collection box 8. In conjunction with the shape of the collection box 8, the alkali powder is guided to the inside of the reagent box 9, so as to achieve repeated use of the alkali powder;

[0027] The top of the desulfurization tank 1 is provided with a driving motor 3, and the bottom of the driving motor 3 is provided with a rotating shaft 17, and the bottom of the rotating shaft 17 is provided with a distribution plate 16, and the distribution plate 16 and the rotating shaft 17 are both arranged at the top of the desulfurization tank 1, and the bottom of the distribution plate 16 is provided with a distribution pipe 18, and the distribution pipe 18 is provided with a plurality of groups, and the distribution pipe 18 is distributed in a ring shape at the bottom of the distribution plate 16, and the cross section of the distribution pipe 18 is funnel-shaped, and the inside of the distribution plate 16 A sieve plate 21 is installed, and a clamping block 20 is arranged on the inner side wall of the distribution disk 16, and the clamping blocks 20 are evenly spaced on the inner side wall of the distribution disk 16. A movable connection is formed between the sieve plate 21 and the clamping block 20. The clamping block 20 can clamp the edge of the sieve plate 21, and the sieve plate 21 is fixed inside the distribution disk 16, so that the alkali powder can be screened, and agglomeration or large-diameter particles are prevented from entering the inside of the distribution disk 16, resulting in the clogging of the distribution pipe 18;

[0028] Specifically, as shown in the figure, when in use, the driving motor 3 is operated to drive the rotating shaft 17, driving the distribution plate 16 to rotate, and the alkali powder is transported to the inside of the distribution plate 16. With the distribution of the distribution pipe 18, the alkali powder is evenly distributed inside the desulfurization tank 1 under the action of the rotating force, so that the alkali powder can fully contact with the flue gas and neutralize the acidic substances in the flue gas.

[0029] A control box 10 is installed on the outside of the medicine box 9, and a display screen 11 is installed on the control box 10. A warning light 15 is installed on one side of the control box 10. A pH sensor 6 is installed inside the aggregate box 8, and the pH sensor 6 and the warning light 15 are electrically connected to the control box 10 through wires.

[0030] Specifically, as shown in the figure, when in use, the alkali powder can be detected in real time through the operation of the pH sensor 6. When the alkalinity of the alkali powder is low, the information will be sent to the control box 10 and the numbers will be displayed on the display screen 11. According to the operating instructions below the system program, the warning light 15 will be controlled to flash, indicating that the alkalinity of the alkali powder is low.

[0031] Working principle: When in use, first, carry the boiler flue gas dry desulfurization device to the target area for placement, open the sealing plate on the outside of the manhole 5, put an appropriate amount of alkali powder into the desulfurization tank 1 from the position of the manhole 5, and install the sealing plate on the outside of the manhole 5. Then, install the smoke inlet pipe 2 and the smoke exhaust pipe 4 with the corresponding smoke pipes respectively, and the smoke will be transported to the inside of the desulfurization tank 1. At this time, the feeding motor 13 will drive the spiral auger 19 to rotate, and transport the alkali powder in the reagent box 9 to the inside of the conveying pipe 14, and put it into the inside of the desulfurization tank 1 from the top, and the alkali powder will fall into the inside of the distribution plate 16. The driving motor 3 will drive the rotating shaft 17 to drive the distribution plate 16 to rotate, and the alkali powder will be transported to the inside of the distribution plate 16, and cooperate with the distribution pipe 18. Under the rotation force Under the action, the alkali powder is evenly spread inside the desulfurization tank 1, so that the alkali powder can fully contact with the flue gas and neutralize the acidic substances in the flue gas. Under the action of gravity, the alkali powder will fall into the inside of the aggregate box 8. In conjunction with the shape of the aggregate box 8, the alkali powder is guided to the inside of the reagent box 9 to achieve repeated use of the alkali powder. Then, the operation of the pH sensor 6 can detect the alkali powder in real time. When the alkalinity of the alkali powder is low, the information will be sent to the control box 10, and the number will be displayed on the display screen 11. According to the operating instructions below the system program, the warning light 15 is controlled to flash, indicating that the alkalinity of the alkali powder is low. Use tools to remove the sealing plate on the outside of the discharge port 7, so that the alkali powder inside the reagent box 9 can be cleaned, and finally the use of the boiler flue gas dry desulfurization device is completed.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A boiler flue gas dry desulfurization device, comprising a desulfurization tank (1), characterized in that: A smoke inlet pipe (2) and a smoke exhaust pipe (4) are respectively arranged on both sides of the desulfurization tank (1), a manhole (5) is arranged at the front end of the desulfurization tank (1), a collection box (8) is installed at the bottom end of the desulfurization tank (1), and a medicine box (9) is installed on one side of the collection box (8), a discharge port (7) is arranged at the bottom end of the medicine box (9), a feeding pipe (12) is installed at the top end of the medicine box (9), and a feeding motor (13) is installed at the top end of the feeding pipe (12), a conveying pipe (14) is installed on one side of the top end of the feeding pipe (12), and the conveying pipe (14) passes through the top end of the desulfurization tank (1), a spiral auger (19) is installed inside the feeding pipe (12), and a fixed connection is formed between the top end of the spiral auger (19) and the feeding motor (13).

2. A boiler flue gas dry desulfurization device according to claim 1, characterized in that: The outer wall of the collecting box (8) is inclined toward one side of the medicine box (9), and the bottom ends of the feeding pipe (12) and the spiral auger (19) both extend to the interior of the medicine box (9).

3. A boiler flue gas dry desulfurization device according to claim 1, characterized in that: A driving motor (3) is installed at the top end of the desulfurization tank (1), and a rotating shaft (17) is installed at the bottom end of the driving motor (3). A distribution disc (16) is installed at the bottom end of the rotating shaft (17). Both the distribution disc (16) and the rotating shaft (17) are arranged at the top end of the desulfurization tank (1).

4. A boiler flue gas dry desulfurization device according to claim 3, characterized in that: A distribution tube (18) is arranged at the bottom end of the distribution disk (16), and the distribution tube (18) is arranged in a plurality of groups. The distribution tubes (18) are distributed in a ring shape at the bottom end of the distribution disk (16), and the cross section of the distribution tube (18) is funnel-shaped.

5. A boiler flue gas dry desulfurization device according to claim 3, characterized in that: A sieve plate (21) is installed inside the distribution disc (16), and a clamping block (20) is arranged on the inner side wall of the distribution disc (16). The clamping blocks (20) are distributed at equal intervals on the inner side wall of the distribution disc (16), and a movable connection is formed between the sieve plate (21) and the clamping blocks (20).

6. A boiler flue gas dry desulfurization device according to claim 1, characterized in that: A control box (10) is installed on the outer side of the medicine box (9), and a display screen (11) is installed on the control box (10). A warning light (15) is installed on one side of the control box (10).

7. The boiler flue gas dry desulfurization device according to claim 1, characterized in that: A pH sensor (6) is installed inside the aggregate box (8), and the pH sensor (6) and the warning light (15) are electrically connected to the control box (10) via a wire.

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