Solid waste incineration flue gas purification equipment

Abstract

The utility model provides solid waste incineration flue gas purification equipment, and belongs to the field of flue gas purification. The purification assembly comprises a transverse plate fixed in the purification barrel, an atomization pipe driven to rotate is arranged at the bottom of the transverse plate, a plurality of atomization nozzles are installed at the bottom of the atomization pipe, a vertical rod arranged in a rotating mode is coaxially arranged in the flow guide rotating barrel, and an installation block is fixed to the upper end of the vertical rod; a turning scraper abutting against the flow guide rotating cylinder is fixed to the mounting block, and a cross plate opposite to the flue gas inlet pipe is fixedly connected to the bottom of the vertical rod. According to the utility model, flue gas flows upwards through the flow guide rotating cylinder, and is disturbed by the rotating direction-changing scraping plate, so that the flue gas flowing upwards can be in a spiral shape, so that sulfur dioxide in the flue gas can be effectively removed when the spiral flue gas meets spiral lime water, the pretreatment effect is better, and the subsequent flue gas purification pressure is reduced.

Description

Technical Field

[0001] This utility model relates to the field of flue gas purification technology, and in particular to a solid waste incineration flue gas purification device. Background Technology

[0002] The boiler is a solid waste incineration boiler. In order to meet relevant environmental protection requirements, the flue gas after the furnace must be purified.

[0003] To meet the requirement of SO2 emission concentration below 35 mg / Nm 3 Smoke and dust emission concentration is less than 5 mg / Nm 3 HCl below 50 mg / Nm 3 Control requirements, etc. In existing solid waste boiler flue gas purification, the main requirement is to reduce SO2 (SO2 pretreatment). In the field of sulfur dioxide removal, limestone-gypsum wet desulfurization is the main method.

[0004] Currently, in absorption towers / purification cylinders, lime water is atomized / sprayed and mixed with the upward flue gas to remove SO2 through acid-base neutralization. However, the upward flue gas in the absorption tower / purification cylinder is mostly guided upward by a flow equalization plate, resulting in poor mixing with the atomized / sprayed lime water. Although this is a pretreatment of SO2, further treatment is still required. However, the poor pretreatment effect increases the burden on subsequent SO2 treatment. Therefore, this application proposes a solid waste incineration flue gas purification device. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a solid waste incineration flue gas purification device.

[0006] An embodiment of this utility model provides a solid waste incineration flue gas purification device, comprising:

[0007] A purification cylinder, on which a flue gas inlet pipe is installed;

[0008] Purification assembly; the purification assembly includes a horizontal plate fixed inside the purification cylinder, a driving atomizing tube at the bottom of the horizontal plate, multiple atomizing nozzles installed at the bottom of the atomizing tube, a flow guiding rotating cylinder installed on the inner wall of the purification cylinder, a rotating vertical rod coaxially arranged inside the flow guiding rotating cylinder, a mounting block fixed at the upper end of the vertical rod, a deflecting scraper fixed on the mounting block that abuts against the flow guiding rotating cylinder, and a cross plate fixedly connected to the bottom of the vertical rod opposite to the flue gas inlet pipe.

[0009] Furthermore, an air outlet pipe is installed at the upper end of the purification cylinder, and the bottom of the purification cylinder is conical in shape. A drain pipe is installed at the bottom of the purification cylinder, and a valve is installed on the drain pipe.

[0010] Furthermore, a bracket is fixedly installed on the purification cylinder, and a leather pad is fixed to the bottom of the bracket.

[0011] Furthermore, a transmission box is fixed on the horizontal plate, and two bevel gears mesh inside the transmission box. A motor is installed on the purification cylinder, and a short shaft is fixed to the output end of the motor. The short shaft passes through the transmission box and is rotatably connected to it. The short shaft is fixedly connected to one of the bevel gears. A delivery pipe is fixed on the atomizing tube. The delivery pipe passes through the transmission box and is rotatably connected to it. The delivery pipe passes through the other bevel gear and is fixedly connected to it.

[0012] Furthermore, an inlet pipe is provided through the purification cylinder, the inlet pipe passes through the transmission box and is fixedly connected to it, and the inlet pipe is rotatably connected to the delivery pipe.

[0013] Furthermore, the flow-guiding rotating cylinder includes two conical shrouds, which are connected and communicate with each other via an intermediate tube.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, the flue gas flows upward through the guide rotating cylinder. After being disturbed by the rotating deflector scraper, the upward-flowing flue gas can be made into a spiral shape. Therefore, when the spiral flue gas meets the spiral lime water, it can effectively remove sulfur dioxide from the flue gas, resulting in better pretreatment and reducing the pressure on subsequent flue gas purification. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a solid waste incineration flue gas purification device described in an embodiment of this utility model.

[0017] Figure 2 This is a cross-sectional view of a solid waste incineration flue gas purification device described in an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the guide rotating cylinder in a solid waste incineration flue gas purification device described in this embodiment of the present invention.

[0019] In the above attached diagram: 1. Support, 2. Purification cylinder, 3. Motor, 4. Liquid inlet pipe, 5. Air outlet pipe, 6. Flue gas inlet pipe, 7. Horizontal plate, 8. Atomizing tube, 9. Short shaft, 10. Transmission box, 11. Guide rotating cylinder, 12. Vertical rod, 13. Cross plate, 14. Mounting block, 15. Directional scraper. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-3As shown in the figure, this utility model embodiment proposes a solid waste incineration flue gas purification device, comprising:

[0022] Purification cylinder 2 is supported by a bracket 1, and a leather pad is fixed to the bottom of the bracket 1. A flue gas inlet pipe 6 is installed on the purification cylinder 2, and a flange is installed on the flue gas inlet pipe 6 for connection to external pipelines.

[0023] In addition, an exhaust pipe 5 is installed at the upper end of the purification cylinder 2 to discharge the pretreated flue gas and transport it to the next treatment cylinder; and the bottom of the purification cylinder 2 is conical in shape, with a drain pipe installed at the bottom of the purification cylinder 2 and a valve installed on the drain pipe. The reaction between lime water and sulfur dioxide will produce gypsum, which becomes muddy in water. The conical bottom of the purification cylinder 2 is designed to collect the gypsum produced by the reaction and discharge it through the drain pipe.

[0024] The purification assembly includes a horizontal plate 7 fixed inside the purification cylinder 2. A rotating atomizing tube 8 is located at the bottom of the horizontal plate 7, and multiple atomizing nozzles or spray heads are installed at the bottom of the atomizing tube 8. A transmission box 10 is fixed on the horizontal plate 7, and two bevel gears mesh inside the transmission box 10. A motor 3 is installed on the purification cylinder 2, and a short shaft 9 is fixed to the output end of the motor 3. The short shaft 9 passes through the transmission box 10 and is rotatably connected to it. The short shaft 9 is fixedly connected to one of the bevel gears. A delivery pipe is fixed on the atomizing tube 8, passing through the transmission box 10 and being rotatably connected to it. The delivery pipe also passes through the other bevel gear and is fixedly connected to it. An inlet pipe 4 passes through the purification cylinder 2, passing through the transmission box 10 and being fixedly connected to it. The inlet pipe 4 is rotatably connected to the delivery pipe. A rotary joint is fixed on the delivery pipe, and the inlet pipe 4 is fixedly connected to the rotary joint.

[0025] The motor 3 drives the short shaft 9 to rotate, and through the transmission of two bevel gears, the conveying pipe and the atomizing pipe 8 rotate. The lime water is transported to the atomizing pipe 8 by the water pump through the liquid inlet pipe 4, and finally sprayed out through the atomizing nozzle or spray head in a spiral shape.

[0026] The inner wall of the purification cylinder 2 is equipped with a flow-guiding rotating cylinder 11, which includes two conical shrouds connected and communicating with each other via a central tube. The diameter of the central tube is larger than the diameter of the vertical rod 12. A horizontal rod is fixed inside the central tube, and the vertical rod 12 passes through the horizontal rod 12 and is rotatably connected to it; the cross-sectional view is shown below. Figure 3 As shown, the upper conical hood facilitates the collection of the reacted gypsum and sprayed lime water, which can then be transported into the purification cylinder 2 through the intermediate pipe; the bottom conical hood can gather the incoming flue gas, which can then be transported upward through the intermediate pipe.

[0027] The guide rotating cylinder 11 is coaxially provided with a rotating vertical rod 12. The upper end of the vertical rod 12 is fixed with a mounting block 14. The mounting block 14 is fixed with a deflecting scraper 15 that abuts against the guide rotating cylinder 11. The bottom of the vertical rod 12 is fixedly connected with a cross plate 13 that is opposite to the flue gas inlet pipe 6. The incoming flue gas blows the cross plate 13 to rotate. The different relative positions of the flue gas inlet pipe 6 and the cross plate 13 will cause the cross plate 13 to rotate in different directions, which can be set according to the actual situation.

[0028] The rotation of the cross plate 13 drives the vertical rod 12 to rotate, which in turn drives the mounting block 14 and the deflecting scraper 15 to rotate. The deflecting scraper 15 can scrape off the gypsum generated by the reaction that falls onto the inner wall of the guide rotating cylinder 11. Combined with the downward flowing lime water, the gypsum can be washed away and finally fall into the purification cylinder 2 through the intermediate pipe, thus preventing the reactants from accumulating in the guide rotating cylinder 11.

[0029] As the plaster is scraped and bonded together by the deflecting scraper 15, some of the plaster falls onto the rotating cross plate 13. The plaster can be dispersed by the cross plate 13, preventing it from sticking to the cross plate 13 and increasing its rotational resistance.

[0030] The flue gas flows upward through the guide rotary cylinder 11. After being disturbed by the rotating deflector scraper 15, the upward-flowing flue gas can be made into a spiral shape. Therefore, when the spiral flue gas meets the spiral lime water, it can effectively remove sulfur dioxide from the flue gas, resulting in better pretreatment and reducing the pressure on subsequent flue gas purification.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A solid waste incineration flue gas purification device, characterized in that, include: Purification cylinder (2), on which a flue gas inlet pipe (6) is installed; Purification assembly; the purification assembly includes a horizontal plate (7) fixed inside the purification cylinder (2), the bottom of the horizontal plate (7) is provided with a driven rotating atomizing tube (8), the bottom of the atomizing tube (8) is equipped with multiple atomizing nozzles, the inner wall of the purification cylinder (2) is equipped with a flow guiding rotating cylinder (11), the flow guiding rotating cylinder (11) is coaxially provided with a rotating vertical rod (12), the upper end of the vertical rod (12) is fixed with an installation block (14), the installation block (14) is fixed with a deflecting scraper (15) that abuts against the flow guiding rotating cylinder (11), and the bottom of the vertical rod (12) is fixedly connected with a cross plate (13) opposite to the flue gas inlet pipe (6).

2. The solid waste incineration flue gas purification equipment according to claim 1, characterized in that, in: The upper end of the purification cylinder (2) is equipped with an air outlet pipe (5), and the bottom of the purification cylinder (2) is conical. A drain pipe is installed at the bottom of the purification cylinder (2), and a valve is installed on the drain pipe.

3. The solid waste incineration flue gas purification equipment according to claim 1, characterized in that, in: A bracket (1) is fixedly installed on the purification cylinder (2), and a leather pad is fixed to the bottom of the bracket (1).

4. The solid waste incineration flue gas purification equipment according to claim 1, characterized in that, in: A transmission box (10) is fixed on the horizontal plate (7). Two bevel gears mesh inside the transmission box (10). A motor (3) is installed on the purification cylinder (2). A short shaft (9) is fixed at the output end of the motor (3). The short shaft (9) passes through the transmission box (10) and is rotatably connected to it. The short shaft (9) is fixedly connected to one of the bevel gears. A delivery pipe is fixed on the atomizing tube (8). The delivery pipe passes through the transmission box (10) and is rotatably connected to it. The delivery pipe passes through the other bevel gear and is fixedly connected to it.

5. The solid waste incineration flue gas purification equipment according to claim 4, characterized in that, in: The purification cylinder (2) is provided with a liquid inlet pipe (4), which passes through the transmission box (10) and is fixedly connected to it. The liquid inlet pipe (4) is rotatably connected to the conveying pipe.

6. The solid waste incineration flue gas purification equipment according to claim 1, characterized in that, in: The flow-guiding rotating cylinder (11) includes two conical covers, which are connected and communicate with each other through an intermediate tube.

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