Tail gas filtering equipment for thermal power plant

Abstract

The utility model discloses tail gas filtering equipment for a thermal power plant, which relates to the technical field of tail gas treatment and comprises a filtering square tube, a flange plate is welded at the bottom end of the filtering square tube, a side positioning plate is arranged in the filtering square tube, and a purification mechanism is arranged on the outer side of the side positioning plate. According to the purification mechanism, a rotary catalytic particle tank is arranged, catalytic particles are used for catalyzing harmful substances in tail gas, purification treatment of the tail gas is completed, a cooling mechanism is arranged under a filtering square pipe, and the cooling mechanism sprays the bottom end of the filtering square pipe and conducts cooling and auxiliary purification on the purified tail gas. In the using process, the vertical sleeve rod is positioned through the four sets of guide bases, the vertical sleeve rod and one side of each guide base are positioned through the fastening holes formed at equal intervals, the spraying position is adjusted according to the smoke discharge amount, and the liquid storage box arranged at the top end of the lifting plate is made to vertically spray liquid to smoke.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to tail gas filtering equipment for a thermal power plant. Background Art

[0002] Coal chemical tail gas has become one of the main sources of environmental pollution. In the tail gas treatment process of thermal power plants, pretreatment is required first. The pretreatment includes filtering, dust removal and desulfurization of the tail gas to remove impurities and harmful substances.

[0003] The current exhaust gas filters are placed horizontally, which can easily cause blockage of the filter plates in the filter device, affecting the filtration of the exhaust gas. The other side of the exhaust gas filter cannot fully contact the exhaust gas, resulting in a waste of resources. The dust in the flue gas is assisted in filtering inside the square tube, but the flue gas discharge volume will change according to the factory's combustion volume. However, it is difficult for the dust suppression equipment to adjust and control the position of the flue gas dust suppression according to the exhaust volume of the square tube. Summary of the invention

[0004] The purpose of the utility model is to provide an exhaust gas filtering device for a thermal power plant to solve the above-mentioned defects caused by the prior art.

[0005] A tail gas filtering device for a thermal power plant comprises a filter square tube, a flange is welded to the bottom end of the filter square tube, a side positioning plate is arranged inside the filter square tube, a purification mechanism is arranged outside the side positioning plate, the purification mechanism catalyzes harmful substances in the tail gas by using the catalytic particles by setting a rotating catalytic particle tank to complete the purification of the tail gas, a cooling mechanism is arranged directly below the filter square tube, the cooling mechanism sprays the bottom end of the filter square tube, cools down and assists in purification of the purified tail gas, and improves the filtering efficiency of the tail gas.

[0006] Preferably, the cooling mechanism includes a guide seat, a vertical sleeve rod, a lifting plate, a liquid storage box and a spray head. The outer side of the lifting plate is rectangularly distributed with a vertical sleeve rod, the top end of the vertical sleeve rod is penetrated and connected with a guide seat, the guide seat is rectangularly distributed on the outside of the filter square tube, a liquid storage box is arranged directly above the lifting plate, a spray head is connected to the pipeline directly above the lifting plate, and the lifting plate is arranged directly below the filter square tube.

[0007] Preferably, the guide seat is connected to the vertical sleeve rod via fastening holes opened at equal intervals on one side.

[0008] Preferably, the purification mechanism includes a positioning guide groove, a side positioning disk, a bidirectional screw rod, arc-shaped blades, a catalytic yarn can and a side slider. The positioning guide groove is symmetrically arranged at the inner end of the filter square tube. The outer side of the positioning guide groove is connected to the side slider. A side axis of the side slider is connected to the side positioning disk. Two groups of the side positioning disks are connected to both sides of the catalytic yarn can. The two groups of the side positioning disks are annularly distributed with arc-shaped blades.

[0009] Preferably, the side positioning plates are connected to the positioning guide grooves via side sliding blocks arranged on both sides.

[0010] Preferably, the bidirectional screw rod is connected to the side positioning plate through a side sliding block that is symmetrically connected through the outside.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. During use, the vertical sleeve rod is positioned through four groups of guide seats, and the vertical sleeve rod and one side of the guide seat are positioned through the fastening holes arranged at equal intervals. The spraying position is adjusted according to the emission of flue gas, so that the liquid storage box arranged on the top of the lifting plate can vertically spray liquid on the flue gas, and use high-pressure liquid to flush the dust on the inner end of the filter square tube to avoid dust accumulation at the top of the filter square tube for a long time, causing blockage at the exhaust end.

[0013] 2. Use flue gas to blow the arc blades arranged on the outside of the catalytic yarn tank, and use the arc blades to drive the catalytic yarn tank to rotate. The flue gas is purified by the rotation of the catalyst, and the harmful substances in the flue gas are adsorbed and purified, thereby increasing the contact panel between the flue gas and the catalyst, and the multiple sets of side positioning plates are positioned and adjusted by the bidirectional screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the front cross-section structure of the filtering square tube in the utility model.

[0016] Figure 3 It is a schematic diagram of the front section structure of the side positioning plate in the utility model.

[0017] Figure 4 It is a schematic diagram of the side view structure of the filtering square tube in the utility model.

[0018] Figure 5 It is a schematic diagram of the top view of the lifting plate in the utility model.

[0019] in:

[0020] 1. Filter square tube; 2. Flange; 3. Guide seat; 4. Vertical sleeve rod; 5. Lifting plate; 6. Cooling mechanism; 7. Liquid storage box; 8. Sprinkler head; 9. Positioning guide groove; 10. Purification mechanism; 11. Side positioning plate; 12. Bidirectional screw rod; 13. Arc blades; 14. Catalytic yarn tank; 15. Side slide block; 16. Fastening hole. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figures 1 to 5 As shown, an exhaust gas filtering device for a thermal power plant includes a filter square tube 1, a flange 2 is welded to the bottom end of the filter square tube 1, a side positioning plate 11 is arranged inside the filter square tube 1, a purification mechanism 10 is arranged on the outside of the side positioning plate 11, the purification mechanism 10 catalyzes harmful substances in the exhaust gas by using catalytic particles by setting a rotating catalytic particle tank to complete the purification of the exhaust gas, a cooling mechanism 6 is arranged directly below the filter square tube 1, the cooling mechanism 6 sprays the bottom end of the filter square tube 1, cools down and assists in purifying the purified exhaust gas, and improves the filtering efficiency of the exhaust gas.

[0023] In this embodiment, the cooling mechanism 6 includes a guide seat 3, a vertical sleeve rod 4, a lifting plate 5, a liquid storage box 7 and a spray head 8. The vertical sleeve rod 4 is distributed in a rectangular shape on the outer side of the lifting plate 5. The top of the vertical sleeve rod 4 is connected with the guide seat 3. The guide seat 3 is distributed in a rectangular shape on the outside of the filter square tube 1. The liquid storage box 7 is arranged directly above the lifting plate 5. The spray head 8 is connected to the pipeline directly above the lifting plate 5. The lifting plate 5 is arranged directly below the filter square tube 1. The bottom end of the liquid storage box 7 is positioned by the lifting plate 5 to complete the height adjustment of the spray head 8.

[0024] In this embodiment, the guide seat 3 is connected to the vertical sleeve rod 4 through fastening holes 16 opened at equal intervals on one side, and the vertical sleeve rod 4 is vertically positioned and guided by the guide seat 3 .

[0025] In this embodiment, the purification mechanism 10 includes a positioning guide groove 9, a side positioning disk 11, a bidirectional screw rod 12, arc blades 13, a catalytic yarn can 14 and a side slider 15. The positioning guide groove 9 is symmetrically arranged at the inner end of the filter square tube 1. The outer side of the positioning guide groove 9 is connected to the side slider 15. A side axis of the side slider 15 is connected to the side positioning disk 11. Two groups of the side positioning disks 11 are connected to both sides of the catalytic yarn can 14. The two groups of the side positioning disks 11 are annularly distributed with arc blades 13. The catalytic yarn can 14 is driven to rotate by the arc blades 13, and the rotating catalyst is used to increase the flue gas purification efficiency.

[0026] In this embodiment, the side positioning disc 11 is connected to the positioning guide groove 9 through the side sliding blocks 15 provided on both sides. The side positioning disc 11 is positioned through the positioning guide groove 9, so as to facilitate quick removal and replacement of the filter element.

[0027] In this embodiment, the bidirectional screw rod 12 is connected to the side positioning plate 11 through a side slider 15 that is symmetrically connected through the outside. The positions of the two groups of side sliders 15 are adjusted by the bidirectional screw rod 12, and the position of the catalytic yarn tank 14 is adjusted according to the purification demand.

[0028] This kind of thermal power plant exhaust gas filtration equipment in actual application includes the following work contents:

[0029] Step 1: The operator first rotates the bidirectional screw rod 12, and laterally displaces the side sliders 15 arranged on both sides through the bidirectional screw rod 12, adjusts the distance between the two groups of side sliders 15 and the side positioning disk 11, and directly introduces the catalytic particles into the interior of the catalytic yarn can 14, and positions both sides of the catalytic yarn can 14 through the side positioning disk 11, and installs multiple groups of arc blades 13 on the outside of the catalytic yarn can 14, and then installs the side sliders 15 and the catalytic yarn can 14 into the interior of the filter square tube 1, and connects the flange 2 to the top of the exhaust device;

[0030] Step 2: The operator opens the exhaust valve and directly injects the gas into the interior of the filter square tube 1, and uses the flue gas to blow the arc blades 13 arranged on the outside of the catalytic yarn tank 14, and uses the arc blades 13 to drive the catalytic yarn tank 14 to rotate, and then through the catalyst inside the catalytic yarn tank 14, the conversion rate of SO2 / SO3 is effectively suppressed while ensuring the denitration rate; by adding the third component, the increase of the conversion rate of SO2 / SO3 during operation is effectively suppressed;

[0031] Step 3: Position the vertical sleeve rod 4 through four groups of guide seats 3, and position the vertical sleeve rod 4 and one side of the guide seat 3 through fastening holes 16 arranged at equal intervals, and adjust the spraying position of the lifting plate 5 according to the emission of the flue gas. It is also possible to open the spray head 8 after the liquid is injected into the liquid storage box 7, and use the spray head 8 to spray the liquid directly into the inside of the filter square tube 1 to purify the internal flue gas of the filter square tube 1;

[0032] Step 4: When it is necessary to clean the internal smoke and dust of the filter square tube 1, the liquid storage box 7 is directly introduced into the interior of the filter square tube 1, and the dust inside the filter square tube 1 is flushed by high-pressure liquid to complete the cleaning of the internal dust of the filter square tube 1.

[0033] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A tail gas filtration device for a thermal power plant, characterized in that: The invention comprises a filter square tube (1) and a purification mechanism (10), wherein a flange (2) is welded to the bottom end of the filter square tube (1), a side positioning plate (11) is arranged inside the filter square tube (1), the purification mechanism (10) catalyzes harmful substances in the exhaust gas by using the catalytic particles by setting a rotating catalytic particle tank, thereby completing the purification of the exhaust gas, and a cooling mechanism (6) is arranged directly below the filter square tube (1), and the cooling mechanism (6) sprays the bottom end of the filter square tube (1), cools the purified exhaust gas and assists in purification, thereby improving the filtering efficiency of the exhaust gas; The cooling mechanism (6) comprises a guide seat (3), a vertical sleeve rod (4), a lifting plate (5), a liquid storage box (7) and a spray head (8); the vertical sleeve rod (4) is rectangularly distributed on the outer side of the lifting plate (5); the top end of the vertical sleeve rod (4) is connected to the guide seat (3); the guide seat (3) is rectangularly distributed on the outer side of the filtering square tube (1); the liquid storage box (7) is arranged directly above the lifting plate (5); the spray head (8) is connected to the pipeline directly above the lifting plate (5); and the lifting plate (5) is arranged directly below the filtering square tube (1); The purification mechanism (10) comprises a positioning guide groove (9), a side positioning disk (11), a bidirectional screw rod (12), arc-shaped blades (13), a catalytic yarn tank (14) and a side slider (15); the positioning guide groove (9) is symmetrically arranged at the inner end of the filtering square tube (1); the outer side of the positioning guide groove (9) is connected to the side slider (15); a side axis of the side slider (15) is connected to the side positioning disk (11); two groups of the side positioning disks (11) are connected to the two sides of the catalytic yarn tank (14); and the two groups of the side positioning disks (11) are annularly distributed with arc-shaped blades (13).

2. The tail gas filtration equipment for a thermal power plant according to claim 1, characterized in that: The guide seat (3) is connected to the vertical sleeve rod (4) via fastening holes (16) provided at equal intervals on one side.

3. The tail gas filtration equipment for a thermal power plant according to claim 1, characterized in that: The side positioning plate (11) is connected to the positioning guide groove (9) via side sliding blocks (15) arranged on both sides.

4. The tail gas filtration equipment for a thermal power plant according to claim 1, characterized in that: The bidirectional screw rod (12) is connected to the side positioning plate (11) via a side sliding block (15) which is symmetrically connected through the outside.

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