Boiler bag dust ash recycling device

Abstract

The utility model provides a device for boiler cloth bag dust removal ash recycling, including boiler, the boiler top is equipped with the bunker before the furnace, boiler one side is equipped with the intercommunication cloth bag dust remover, cloth bag dust remover one side is equipped with ash storehouse, cloth bag dust remover bottom is equipped with the three -way distributor, cloth bag dust remover passes through three -way distributor and the bunker before the furnace and ash storehouse intercommunication, cloth bag dust remover bottom is equipped with dust material taking device. When cloth bag dust removal ash calcium content in the boiler flue gas is higher, drive three -way distributor's air cylinder, to make three -way distributor and the bunker before the furnace intercommunication, to make cloth bag dust remover output's dust recycling. Cloth bag dust remover, three -way distributor and dust material taking device combine, utilize cloth bag dust remover's dust ash secondary use, avoid resource value waste, be used for the desulfurization in the boiler furnace, reduce boiler flue gas desulfurization material consumption, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of boiler manufacturing, and in particular to a device for recycling ash from boiler baghouse dust collectors. Background Technology

[0002] The existing boiler baghouse dust production process involves directly conveying the ash to the ash silo via a baghouse pump system, and then transporting it by tanker truck for sale. During production operation studies, it was discovered that the baghouse dust has utilization value. However, production consumption calculations showed that the utilization rate of limestone and quicklime used in flue gas treatment was low. Sampling and analysis of the baghouse dust revealed a high calcium content. Experiments showed that the ash was used in boiler desulfurization, resulting in good desulfurization performance and a decrease in the calcium content of the baghouse desulfurization ash. Furthermore, the recycling of the baghouse dust reduced the cost of boiler flue gas desulfurization.

[0003] The existing system directly transports ash to the ash silo via a bag filter pump. The ash from the bag filter has a high calcium content, resulting in a serious waste of resource value. It does not achieve secondary utilization, has a low utilization rate of desulfurization materials, and increases production costs. The low utilization rate of the original desulfurization materials itself leads to a waste of procurement costs. At the same time, the failure to reduce the consumption of new materials through the recycling of dust ash results in a high overall cost of boiler flue gas desulfurization. Utility Model Content

[0004] This utility model provides a device for recycling boiler baghouse dust collector ash, which solves the problems of baghouse dust collector ash being directly transported to the ash silo by the baghouse pump conveying system, resulting in high calcium content, serious waste of resource value, failure to achieve secondary utilization, low utilization rate of desulfurization materials, increased production costs, and high overall cost of boiler flue gas desulfurization.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a boiler bag filter ash recycling device, including a boiler, a furnace front silo at the top of the boiler, a connected bag filter on one side of the boiler, an ash silo on one side of the bag filter, a three-way distributor at the bottom of the bag filter, the bag filter being connected to the furnace front silo and the ash silo through the three-way distributor, and a dust collector at the bottom of the bag filter.

[0006] In the preferred embodiment, an electrostatic precipitator and a flue gas absorption tower are provided between the boiler and the bag filter, and the boiler, electrostatic precipitator, flue gas absorption tower and bag filter are connected in sequence.

[0007] In the preferred embodiment, a chimney is provided on the top of the bag filter, and the bag filter is connected to the chimney.

[0008] In the preferred embodiment, a first valve is provided between the bag filter and the ash silo, and a second valve is provided between the bag filter and the furnace front silo.

[0009] In a preferred embodiment, the three-way distributor includes a main pipe, a side pipe on one side of the main pipe, a rotating seat at the bottom intersection of the main pipe and the side pipe, a rotating shaft on the rotating seat, and a distribution plate on the rotating shaft.

[0010] In the preferred embodiment, one end of the main pipe is connected to the discharge port of the bag filter, the other end of the main pipe is connected to the furnace front silo, one end of the side pipe is connected to the ash silo, and the bottom of the bag filter is equipped with a rotating cylinder, one end of which is rotatably connected to the rotating shaft on the rotating seat.

[0011] In a preferred embodiment, the dust collector includes a material collection cylinder, a telescopic material collection plug inside the material collection cylinder, a material bottle at the bottom of the material collection cylinder, and the material collection cylinder is installed on one side of the outlet of the bag filter.

[0012] In a preferred embodiment, the material receiving cylinder includes a hollow sleeve with a discharge pipe at the bottom. The inner wall of the sleeve has a groove, which includes a horizontal groove and an arc-shaped groove at one end. The discharge pipe has an internal thread.

[0013] In a preferred embodiment, the feed plug includes a rod body, a groove at the top of the rod body, a cone at one end of the rod body, a protrusion on one side of the rod body, the protrusion abutting against the groove, and a handle at the other end of the rod body.

[0014] In the preferred embodiment, the top of the material bottle is provided with an external thread, and the material bottle is threadedly connected to the ash discharge pipe.

[0015] The beneficial effects of this invention are as follows: The furnace hopper contains powdered limestone for removing sulfur dioxide from the flue gas inside the boiler, as well as baghouse dust that is recycled by the device. This is transported to the boiler via a limestone feeder and a Roots blower, where sulfur dioxide is decomposed and absorbed at high temperatures. Most of the dust in the boiler flue gas is removed by an electrostatic precipitator. Sulfur dioxide and dust in the boiler flue gas are removed by reacting with materials in the flue gas absorption tower, removing sulfur dioxide and nitrogen oxides. Dust in the boiler flue gas and dust particles in the flue gas absorption tower are removed by a baghouse dust collector. The clean flue gas after treatment is discharged through a chimney.

[0016] The dust collector is used to collect dust from the outlet of the bag filter. The dust is collected by extending the collecting plug so that the dust falls into the groove of the collecting plug. The collecting plug is then retracted so that the protrusion is positioned on the arc groove of the slide. The handle is turned so that the dust in the groove falls into the material bottle. The material bottle is then removed to test the calcium content of the dust in the material bottle.

[0017] When the calcium content of the baghouse dust collector ash in the boiler flue gas is high, the cylinder of the three-way distributor is driven to make the distribution plate abut against the opening of the side pipe, thus opening the main pipe and closing the side pipe, connecting the three-way distributor to the furnace front silo, allowing the dust output from the baghouse dust collector to be recycled. When the calcium content of the baghouse dust collector ash in the boiler flue gas is low, the cylinder of the three-way distributor is driven to close the main pipe and open the side pipe, connecting the three-way distributor to the ash silo. The combination of the baghouse dust collector, the three-way distributor, and the dust collector utilizes the dust from the baghouse dust collector for secondary utilization, avoiding waste of resource value, and is used for in-furnace desulfurization, reducing the consumption of desulfurization materials in boiler flue gas and lowering production costs. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a flowchart illustrating the overall structure of this utility model; Figure 2 This is a front view of a partial structure of this utility model; Figure 3 This is a front view of a partial structure of the three-way distributor of this utility model; Figure 4 This is an axonometric view of the dust collector of this utility model; Figure 5 This is an exploded view of the dust collector of this utility model; Figure 6 This is an axonometric view of the material-taking plug of this utility model; In the diagram: 1. Furnace front silo; 2. Boiler; 3. Electrostatic precipitator; 4. Flue gas absorption tower; 5. Bag filter; 6. Three-way distributor; 601. Main pipe; 602. Side pipe; 603. Rotating seat; 604. Cylinder; 605. Distributor plate; 7. Dust collector; 8. Picking cylinder; 801. Sleeve; 802. Ash discharge pipe; 803. Slide chute; 9. Picking plug; 901. Rod; 902. Groove; 903. Cone; 904. Protruding column; 905. Handle; 10. Material bottle; 11. Ash silo; 12. Chimney; 13. First valve; 14. Second valve. Detailed Implementation

[0019] Example 1: like Figure 1-6The boiler baghouse dust collector ash recycling device includes a boiler 2, a furnace front silo 1 at the top of the boiler 2, a connected baghouse dust collector 5 on one side of the boiler 2, an ash silo 11 on one side of the baghouse dust collector 5, and a three-way distributor 6 at the bottom of the baghouse dust collector 5. The baghouse dust collector 5 is connected to the furnace front silo 1 and the ash silo 11 through the three-way distributor 6. A dust collector 7 is located at the bottom of the baghouse dust collector 5. With this structure, the furnace front silo 1 contains powdered limestone for removing sulfur dioxide from the flue gas in the boiler 2, as well as baghouse dust collected for recycling. This is transported to the boiler 2 via a limestone feeder and a Roots blower, where sulfur dioxide in the flue gas is decomposed and absorbed at high temperatures. Most of the dust in the flue gas of the boiler 2 is removed by an electrostatic precipitator 3. Sulfur dioxide and dust in the flue gas of the boiler 2 are further removed by reacting with materials in the flue gas absorption tower 4. Dust in the flue gas from boiler 2 and dust in the flue gas absorption tower 4 are removed by a bag filter 5. The clean flue gas after treatment from boiler 2 is discharged through chimney 12.

[0020] The dust collector 7 collects the dust from the outlet of the bag filter 5. The dust collector 9 is extended so that the dust falls into the groove 902 of the dust collector 9. The dust collector 9 is retracted so that the protrusion 904 is located on the arc groove of the slide 803. The handle 905 is turned so that the dust in the groove 902 falls into the material bottle 10. The material bottle 10 is removed so that the calcium content of the dust in the material bottle 10 can be tested.

[0021] When the calcium content of the bag filter ash in the flue gas of boiler 2 is high, the cylinder 604 of the three-way distributor 6 is driven, causing the distributor plate 605 to abut against the opening of the side pipe 602, thus opening the main pipe 601 and closing the side pipe 602, connecting the three-way distributor 6 to the furnace front silo 1, allowing the dust output from the bag filter 5 to be recycled. When the calcium content of the bag filter ash in the flue gas of boiler 2 is low, the cylinder 604 of the three-way distributor 6 is driven, closing the main pipe 601 and opening the side pipe 602, connecting the three-way distributor 6 to the ash silo 11. The bag filter 5, the three-way distributor 6, and the dust collector 7 are combined to utilize the dust from the bag filter 5 for secondary use, avoiding waste of resource value, and using it for in-furnace desulfurization in boiler 2, reducing the consumption of desulfurization materials in the flue gas of boiler 2 and lowering production costs.

[0022] In a preferred embodiment, an electrostatic precipitator 3 and a flue gas absorption tower 4 are installed between the boiler 2 and the baghouse dust collector 5, with the boiler 2, electrostatic precipitator 3, flue gas absorption tower 4, and baghouse dust collector 5 connected in sequence. With this structure, most of the dust in the flue gas from the boiler 2 is removed by the electrostatic precipitator 3. Sulfur dioxide and dust in the flue gas from the boiler 2 are removed by reacting with the materials in the flue gas absorption tower 4. The dust in the flue gas from the boiler 2 and the dust particles in the flue gas absorption tower 4 are then removed by the baghouse dust collector 5.

[0023] In a preferred embodiment, the bag filter 5 is equipped with a chimney 12 at its top, and the bag filter 5 is connected to the chimney 12. With this structure, the clean flue gas treated by the boiler 2 is discharged through the chimney 12.

[0024] In the preferred embodiment, a first valve 13 is provided between the bag filter 5 and the ash silo 11, and a second valve 14 is provided between the bag filter 5 and the furnace front silo 1. With this structure, the second valve 14 is connected to the furnace front silo 1 through a material conveying pipeline, so that the bag filter ash is collected in a circulating manner to the furnace front silo 1, and then conveyed to the boiler 2 for secondary utilization by a feeder.

[0025] In a preferred embodiment, the three-way distributor 6 includes a main pipe 601, a side pipe 602 on one side of the main pipe 601, and a rotating seat 603 at the bottom intersection of the main pipe 601 and the side pipe 602. A rotating shaft is mounted on the rotating seat 603, and a distributor plate 605 is mounted on the rotating shaft. With this structure, a connecting rod is provided at one end of the rotating shaft, one end of which is connected to the rotating shaft, and the other end of which is rotatably connected to a cylinder 604.

[0026] In the preferred embodiment, one end of the main pipe 601 is connected to the discharge port of the bag filter 5, and the other end of the main pipe 601 is connected to the furnace front silo 1. One end of the side pipe 602 is connected to the ash silo 11. The bottom of the bag filter 5 is equipped with a rotatably connected cylinder 604, one end of which is rotatably connected to the rotating shaft on the rotating seat 603. With this structure, when the calcium content of the bag filter ash in the flue gas of the boiler 2 is high, the cylinder 604 of the three-way distributor 6 is driven so that the distributor plate 605 abuts against the opening of the side pipe 602, thereby opening the main pipe 601 and closing the side pipe 602, so that the three-way distributor 6 is connected to the furnace front silo 1, and the dust output from the bag filter 5 is recycled. When the calcium content of the bag filter ash in the flue gas of boiler 2 is low, the cylinder 604 of the three-way distributor 6 is driven to close the main pipe 601 and open the side pipe 602, so that the three-way distributor 6 is connected to the ash silo 11.

[0027] In a preferred embodiment, the dust collector 7 includes a collecting cylinder 8, inside which is a retractable collecting plug 9. A material bottle 10 is located at the bottom of the collecting cylinder 8. The collecting cylinder 8 is installed on one side of the outlet of the bag filter 5. With this structure, the dust collector 7 collects dust from the outlet of the bag filter 5. By extending the collecting plug 9, the dust falls into the groove 902 of the collecting plug 9. The collecting plug 9 is retracted so that the protrusion 904 is positioned on the arc-shaped groove of the slide 803. The handle 905 is rotated to allow the dust in the groove 902 to fall into the material bottle 10. The material bottle 10 is then removed to test the calcium content of the dust inside.

[0028] In a preferred embodiment, the material receiving cylinder 8 includes a hollow sleeve 801. A discharge pipe 802 is located at the bottom of the sleeve 801, and a groove 803 is provided on the inner wall of the sleeve 801. The groove 803 includes a horizontal groove, one end of which has an arc-shaped groove. The discharge pipe 802 has internal threads. With this structure, the groove 803 is located on the inner wall of the sleeve 801, and when the protrusion 904 slides to the arc-shaped groove, the groove body 902 is located at the top of the material bottle 10.

[0029] In a preferred embodiment, the material-collecting plug 9 includes a rod 901, a groove 902 at the top of the rod 901, a cone 903 at one end of the rod 901, a protrusion 904 on one side of the rod 901 that abuts against the sliding groove 803, and a handle 905 at the other end of the rod 901. This structure, including the cone 903 at the end of the rod 901, facilitates the extension and retraction of the rod 901 at the outlet of the bag filter 5 for material collection.

[0030] In the preferred embodiment, the top of the material bottle 10 is provided with an external thread, and the material bottle 10 is threadedly connected to the ash discharge pipe 802. With this structure, the material bottle 10 is easy to handle.

[0031] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A device for recycling ash from boiler baghouse dust collectors, characterized in that: The boiler (2) is equipped with a furnace front silo (1) at the top of the boiler (2), a bag filter (5) connected to one side of the boiler (2), an ash silo (11) on one side of the bag filter (5), a three-way feeder (6) at the bottom of the bag filter (5), the bag filter (5) is connected to the furnace front silo (1) and the ash silo (11) through the three-way feeder (6), and a dust collector (7) at the bottom of the bag filter (5).

2. The device for recycling boiler baghouse dust collector ash according to claim 1, characterized in that: An electrostatic precipitator (3) and a flue gas absorption tower (4) are provided between the boiler (2) and the bag filter (5). The boiler (2), electrostatic precipitator (3), flue gas absorption tower (4) and bag filter (5) are connected in sequence.

3. The device for recycling boiler baghouse dust collector ash according to claim 1, characterized in that: The bag filter (5) is equipped with a chimney (12) at the top, and the bag filter (5) is connected to the chimney (12).

4. The device for recycling boiler baghouse dust collector ash according to claim 1, characterized in that: A first valve (13) is provided between the bag filter (5) and the ash silo (11), and a second valve (14) is provided between the bag filter (5) and the furnace front silo (1).

5. The device for recycling boiler baghouse dust collector ash according to claim 1, characterized in that: a three-way valve... The feeder (6) includes a main pipe (601), a side pipe (602) is provided on one side of the main pipe (601), a rotating seat (603) is provided at the bottom intersection of the main pipe (601) and the side pipe (602), a rotating shaft is provided on the rotating seat (603), and a feeder plate (605) is provided on the rotating shaft.

6. The device for recycling boiler baghouse dust collector ash according to claim 5, characterized in that: One end of the main pipe (601) is connected to the discharge port of the bag filter (5), and the other end of the main pipe (601) is connected to the furnace front silo (1). One end of the side pipe (602) is connected to the ash silo (11). The bottom of the bag filter (5) is equipped with a rotating cylinder (604), and one end of the cylinder (604) is rotatably connected to the rotating shaft on the rotating seat (603).

7. The device for recycling boiler baghouse dust collector ash according to claim 1, characterized in that: The dust collector (7) includes a material collection cylinder (8), which is equipped with a telescopic material collection plug (9). A material bottle (10) is provided at the bottom of the material collection cylinder (8). The material collection cylinder (8) is installed on one side of the discharge port of the bag dust collector (5).

8. The device for recycling boiler baghouse dust collector ash according to claim 7, characterized in that: The material receiving cylinder (8) includes a hollow sleeve (801), the bottom of the sleeve (801) is provided with an ash discharge pipe (802), the inner wall of the sleeve (801) is provided with a sliding groove (803), the sliding groove (803) includes a horizontal groove, one end of the horizontal groove is provided with an arc groove, and the ash discharge pipe (802) is provided with an internal thread.

9. The device for recycling boiler baghouse dust collector ash according to claim 7, characterized in that: The feed plug (9) includes a rod (901), a groove (902) at the top of the rod (901), a cone (903) at one end of the rod (901), a protrusion (904) on one side of the rod (901), the protrusion (904) abutting against the slide groove (803), and a handle (905) at the other end of the rod (901).

10. The device for recycling boiler baghouse dust collector ash according to claim 7, characterized in that: the material... The top of the bottle (10) is provided with an external thread, and the material bottle (10) is threadedly connected to the ash discharge pipe (802).

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