Denitration catalyst structure

Abstract

The utility model discloses a denitration catalyst structure, and relates to the field of denitration catalysis, the denitration catalyst structure comprises a denitration catalyst block, the denitration catalyst block is provided with a plurality of uniformly distributed denitration catalyst holes, the denitration catalyst holes penetrate through the denitration catalyst block, and the upper surface of the denitration catalyst block is provided with a protection mechanism. An adjusting mechanism is arranged on one surface, far away from the protection mechanism, of the denitration catalyst block. Flue gas is discharged to the denitration catalyst block, the protection mechanism on the denitration catalyst block relieves and disperses the impact force of flue gas impact, the possibility that the flue gas directly blows the surface of the denitration catalyst block is reduced, and then the flue gas is subjected to denitration catalytic reaction when passing through the denitration catalyst holes, so that the flue gas directly blows the denitration catalyst block can be reduced, and the denitration efficiency of the denitration catalyst block is improved. The windward side of the denitration catalyst block is damaged by blowing, and the service life of the denitration catalyst block is influenced.

Description

Technical Field

[0001] The present application relates to the field of denitration catalysis, and in particular to a denitration catalyst structure. Background Art

[0002] DeNOx catalyst refers to the catalyst used in the SCR deNOx system of power plants. In the SCR reaction, it is a substance that prompts the reducing agent to selectively react chemically with nitrogen oxides in the flue gas at a certain temperature. Its main function is to separate the chemical substance nitrate in the flue gas and improve the environmental protection level of the flue gas discharged into the air.

[0003] DeNOx catalysts are generally made into blocks, and then evenly distributed honeycomb holes are punched on their surface. The block-shaped catalyst block is then installed in a pipe through which flue gas can pass. When the flue gas passes through the pipe, it passes through the deNOx catalyst block to carry out a deNOx reaction.

[0004] However, in actual use, when the flue gas passes through the pipe, it carries with it dust particles. When the flue gas blows directly to the deNOx catalyst block, the blowing force of the flue gas and the carried dust particles will cause damage and wear to the surface of the deNOx catalyst, which may affect the service life of the deNOx catalyst block. Utility Model Content

[0005] The purpose of the present application is to solve the problem raised in the above background technology that the blowing force of the flue gas and the entrained dust particles may damage and wear the surface of the denitration catalyst, which may affect the service life of the denitration catalyst block. The present application provides a denitration catalyst structure.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A denitration catalyst structure comprises a denitration catalyst block, wherein the denitration catalyst block is provided with a plurality of evenly distributed denitration catalyst holes, the denitration catalyst holes penetrate the denitration catalyst block, a protective mechanism is arranged on the upper surface of the denitration catalyst block, and an adjustment mechanism is arranged on a surface of the denitration catalyst block away from the protective mechanism.

[0008] By adopting the above technical scheme, a protective mechanism and an adjusting mechanism are added to the denitration catalyst block, and then the denitration catalyst block is placed in a reaction vessel of the denitration catalytic reaction, with the side of the denitration catalyst block with the protective mechanism facing the direction of the gas blowing. The protective mechanism on the denitration catalyst block can alleviate and disperse the impact force of the flue gas impulse, thereby reducing the possibility of flue gas directly blowing on the surface of the denitration catalyst block, thereby reducing the possibility of flue gas directly blowing on the denitration catalyst block, causing the windward side of the denitration catalyst block to be damaged, and affecting the service life of the denitration catalyst block.

[0009] Furthermore, the protection mechanism includes a protection plate arranged on the denitration catalyst block, the protection plate is provided with a plurality of evenly distributed protection holes, the protection holes correspond to the denitration catalyst holes, clamping blocks are fixed on both sides of the protection plate, and clamping grooves are provided on both sides of the denitration catalyst block.

[0010] By adopting the above technical solution, the snap-in block is clamped in the snap-in groove on the denitrification catalyst block, so that the protective plate is in contact with the denitrification catalyst block, and the protective plate is used to block the directly blown flue gas, thereby reducing the possibility of flue gas directly blowing on the surface of the denitrification catalyst block, causing the surface to be damaged and affecting the service life.

[0011] Furthermore, a plurality of evenly distributed protective sleeves are fixed on the protective plate, and the protective sleeves correspond to the denitration catalyst holes.

[0012] By adopting the above technical scheme, when the protective plate contacts the denitration catalyst block, the protective sleeve fixed on the denitration catalyst block is allowed to enter the denitration catalyst hole, and the flue gas is allowed to enter the denitration catalyst hole along the protective sleeve, so that the flue gas can enter the denitration catalyst hole more smoothly for denitration reaction, and the edge of the denitration catalyst hole is further protected.

[0013] Furthermore, the edges of the protection holes are provided with flow-guiding fillets.

[0014] By adopting the above technical solution, when the flue gas blows toward the anti-skid plate, the flue gas enters the protective sleeve under the action of the guide fillet, thereby reducing the obstruction of the protective plate to the flue gas, guiding the flue gas, and allowing the flue gas to quickly enter the denitrification catalyst hole.

[0015] Furthermore, a clamping inclined surface is provided on the clamping block, and the clamping inclined surface corresponds to the clamping groove.

[0016] By adopting the above technical solution, when the protective plate is pressed down, the engaging bevel on the engaging block is abutted against the edge of the denitration catalyst block. Under the action of the engaging bevel, the engaging block is opened, so that the engaging block can enter the engaging groove more conveniently.

[0017] Furthermore, the regulating mechanism comprises an regulating plate 1 fixed on the denitration catalyst block, the regulating plate 1 is provided with evenly distributed regulating holes, the regulating holes correspond to the denitration catalyst holes, the regulating plate is slidably connected to two symmetrical sliding rods, and a plurality of regulating plates 2 are fixed between the two sliding rods.

[0018] By adopting the above technical solution, the sliding rod drives the adjustment plate 2 to slide on the adjustment rod 1, and the adjustment plate 2 blocks the adjustment hole on the adjustment plate 1, thereby changing the size of the adjustment hole, controlling the amount of flue gas passing through the denitrification catalyst hole, and increasing the time the flue gas stays in the denitrification catalyst hole.

[0019] Furthermore, a support block is provided at one end of the sliding rod, the support block is fixedly connected to an adjustment block plate, an adjustment bolt is rotatably connected to the support block, and the adjustment bolt is threadedly connected to one end of the sliding rod.

[0020] By adopting the above technical solution, the adjusting bolt is rotated to rotate on the supporting block, and the sliding rod threadedly connected to the adjusting bolt moves on the adjusting plate 1, thereby facilitating the sliding rod to move on the adjusting plate 1.

[0021] Furthermore, a reinforcing coating is sprayed on the denitration catalyst block, and the reinforcing coating is a silicone resin high-temperature paint.

[0022] By adopting the above technical solution, a layer of reinforcing coating is sprayed on the denitration catalyst in the direction of the flue gas. The reinforcing coating is a silicone resin high-temperature paint, which can further improve the strength of the surface of the denitration catalyst block and reduce the possibility of surface damage.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. The present application provides upper clamping grooves on both sides of the denitration catalyst block, and then fixes the protective plate with one side of the clamping block facing the denitration catalyst block, and then presses down the protective plate and the clamping block. The clamping block is elastic, and the clamping block uses the provided clamping inclined surface to lift the clamping block. When the clamping block moves to the position of the clamping groove, the clamping block is clamped into the clamping groove to complete the fixation of the protective plate. At the same time, the protective sleeve fixed on the protective plate enters the denitration catalyst hole. When the flue gas blows toward the denitration catalyst block, the flue gas is guided by the guide fillet on the protective plate, allowing the flue gas to pass through the protective hole on the protective plate, and then enter the protective sleeve, and then enter the denitration catalyst hole from the protective sleeve to carry out denitration reaction, thereby achieving the purpose of reducing the possibility of flue gas directly blowing on the surface of the denitration catalyst block, causing the denitration catalyst block to be damaged and affecting the service life.

[0025] 2. In the present application, when the denitration catalyst block is fixed in the reaction area, the adjusting bolt is rotated to rotate on the supporting block, and the sliding rod threadedly connected to the adjusting bolt is moved on the adjusting plate 1. When the sliding rod moves, it drives the adjusting plate 2. When the adjusting plate 2 moves, it blocks the adjusting hole on the adjusting plate 1, so that the opening of the adjusting hole changes, and the amount of flue gas passing through the denitration catalyst hole can be controlled, and the residence time of the flue gas in the denitration catalyst hole can be adjusted, thereby achieving the purpose of being able to adjust the efficiency of the flue gas passing through the denitration catalyst hole according to the concentration of the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the first three-dimensional structure of the denitration catalyst block in the present application;

[0027] Figure 2 It is a second three-dimensional structural schematic diagram of the denitration catalyst block in the present application;

[0028] Figure 3 It is a third three-dimensional structural schematic diagram of the denitration catalyst block in the present application;

[0029] Figure 4 This application Figure 2 Enlarged schematic diagram at point A in the middle.

[0030] Description of reference numerals:

[0031] 1. DeNOx catalyst block; 2. DeNOx catalyst hole; 3. Protection mechanism; 31. Protection plate; 32. Protection hole; 33. Snap-in groove; 34. Snap-in block; 35. Protection sleeve; 36. Guide fillet; 37. Snap-in slope; 4. Adjustment mechanism; 41. Adjustment plate one; 42. Adjustment plate two; 43. Sliding rod; 44. Adjustment bolt; 45. Support block; 5. Reinforcement coating. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 —4 Provide further details of this application.

[0033] The embodiment of the present application discloses a denitration catalyst structure.

[0034] Reference Figure 1 , Figure 2 and Figure 3 A denitration catalyst structure comprises a denitration catalyst block 1, on which a plurality of evenly distributed denitration catalyst holes 2 are opened, the denitration catalyst holes 2 penetrate the denitration catalyst block 1, a protective mechanism 3 is arranged on the upper surface of the denitration catalyst block 1, and an adjusting mechanism 4 is arranged on the side of the denitration catalyst block 1 away from the protective mechanism 3.

[0035] After the denitration catalyst block 1 is produced, a protective mechanism 3 and an adjusting mechanism 4 are added to the denitration catalyst block 1, and then the denitration catalyst block 1 is placed in a reaction vessel for a denitration catalytic reaction, and the side of the denitration catalyst block 1 with the protective mechanism 3 is facing the direction of the gas blowing, and then the adjusting mechanism 4 is used to adjust the amount of gas passing through the denitration catalyst hole 2 according to the gas concentration, and then the denitration catalytic operation is performed, and the flue gas is discharged to the denitration catalyst block 1. The protective mechanism 3 on the denitration catalyst block 1 alleviates and disperses the impact force of the flue gas impulse, reducing the possibility of the flue gas directly blowing on the surface of the denitration catalyst block 1, and then the flue gas is allowed to undergo a denitration catalytic reaction when passing through the denitration catalyst hole 2. When the flue gas passes through the denitration catalyst hole 2, the flow rate of the flue gas is controlled and finally discharged. By arranging the protective mechanism 3 in the direction of the denitration catalyst block 1 toward the flue gas, the possibility of the flue gas directly blowing on the denitration catalyst block 1, causing the windward side of the denitration catalyst block 1 to be damaged, and affecting the service life of the denitration catalyst block 1 can be reduced.

[0036] Reference Figure 1 , Figure 2 and Figure 3 The protection mechanism 3 includes a protection plate 31 arranged on the denitration catalyst block 1, and a plurality of evenly distributed protection holes 32 are opened on the protection plate 31, and the protection holes 32 correspond to the denitration catalyst holes 2. A clamping block 34 is fixed on both sides of the protection plate 31, and a clamping groove 33 is opened on both sides of the denitration catalyst block 1.

[0037] In addition, a plurality of evenly distributed protective sleeves 35 are fixed on the protective plate 31 , and the protective sleeves 35 correspond to the denitration catalyst holes 2 .

[0038] In addition, the edges of the protection holes 32 are provided with flow guide fillets 36 .

[0039] Furthermore, a clamping inclined surface 37 is formed on the clamping block 34 , and the clamping inclined surface 37 corresponds to the clamping groove 33 .

[0040] The upper clamping grooves 33 are opened on both sides of the denitration catalyst block 1, and then the side of the protective plate 31 fixed with the clamping block 34 is facing the denitration catalyst block 1, and then the protective plate 31 and the clamping block 34 are pressed down. The clamping block 34 is elastic, and the clamping block 34 is lifted up by the clamping inclined surface 37. When the clamping block 34 moves to the position of the clamping groove 33, the clamping block 34 is clamped into the clamping groove 33 to complete the fixing of the protective plate 31. At the same time, the protective sleeve 35 fixed on the protective plate 31 enters the denitration catalyst hole 2. When the flue gas blows toward When the denitration catalyst block 1 is installed, the flue gas is guided by the guide fillet 36 on the protective plate 31, allowing the flue gas to pass through the protective hole 32 on the protective plate 31, and then enter the protective sleeve 35, and then enter the denitration catalyst hole 2 from the protective sleeve 35 to carry out the denitration reaction. By utilizing the protective plate 31 to block and guide the flue gas, and then allowing the flue gas to enter the denitration catalyst hole 2 under the guidance of the protective sleeve 35, it is possible to reduce the possibility of flue gas directly blowing on the surface of the denitration catalyst block 1, causing the denitration catalyst block 1 to be damaged and affecting its service life.

[0041] Reference Figure 2 and Figure 4 The regulating mechanism 4 includes an regulating plate 41 fixed on the denitration catalyst block 1, and the regulating plate 41 is provided with evenly distributed regulating holes, which correspond to the denitration catalyst holes 2. Two symmetrical sliding rods 43 are slidably connected to the regulating plate, and a plurality of regulating plates 42 are fixed between the two sliding rods 43.

[0042] In addition, a support block 45 is provided at one end of the sliding rod 43 , and the support block 45 is fixedly connected to the adjustment block plate. An adjustment bolt 44 is rotatably connected to the support block 45 , and the adjustment bolt 44 is threadedly connected to one end of the sliding rod 43 .

[0043] When the denitration catalyst block 1 is fixed in the reaction area, the adjusting bolt 44 is rotated to rotate on the supporting block 45, and the sliding rod 43 threadedly connected to the adjusting bolt 44 is moved on the adjusting plate 1 41. When the sliding rod 43 moves, it drives the adjusting plate 2 42. When the adjusting plate 2 42 moves, it blocks the adjusting hole on the adjusting plate 1 41, so that the opening of the adjusting hole changes, and the amount of flue gas passing through the denitration catalyst hole 2 can be controlled, and the residence time of the flue gas in the denitration catalyst hole 2 can be adjusted. By moving the adjusting plate 2 42 on the adjusting plate 1 41, the adjusting hole on the adjusting plate 1 41 connected to the denitration catalyst hole 2 can be adjusted, so that the efficiency of the flue gas passing through the denitration catalyst hole 2 can be adjusted according to the concentration of the flue gas.

[0044] Reference Figure 1 and Figure 3A reinforcing coating 5 is sprayed on the denitration catalyst block 1. The reinforcing coating 5 is a silicone resin high-temperature paint. A layer of reinforcing coating 5 is sprayed on the denitration catalyst in the direction of the flue gas. The reinforcing coating 5 is a silicone resin high-temperature paint. The silicone resin high-temperature paint has good heat resistance and corrosion resistance, and can be stably attached to the denitration catalyst block 1 to improve the strength of the surface of the denitration catalyst block 1. By spraying the reinforcing coating 5 on the denitration catalyst block 1, the strength of the surface of the denitration catalyst block 1 can be further improved, reducing the possibility of surface damage.

[0045] Working principle: when using the denitration catalyst block 1, first fix the adjustment plate 41 on the denitration catalyst block 1, and then according to the smoke concentration of denitration required, the adjustment bolt 44 is rotated on the support block 45, so that the sliding rod 43 threadedly connected with the adjustment bolt 44 moves on the adjustment plate 41, and the sliding rod 43 drives the adjustment plate 42 when moving, and the adjustment plate 42 blocks the adjustment hole on the adjustment plate 41 when moving, so that the opening of the adjustment hole changes, and then the upper clamping grooves 33 are opened on both sides of the denitration catalyst block 1, and then the side of the protective plate 31 fixed with the clamping block 34 is facing the denitration catalyst block 1, and then the protective plate 31 and the clamping block 34 are pressed down, and the clamping block 34 is elastic, and the clamping block 34 is used to The clamping block 34 is lifted up with the provided clamping slope 37. When the clamping block 34 moves to the position of the clamping groove 33, the clamping block 34 is clamped into the clamping groove 33 to complete the fixation of the protective plate 31. At the same time, the protective sleeve 35 fixed on the protective plate 31 enters into the denitration catalyst hole 2. Then the entire denitration catalyst block 1 is placed into the catalytic reaction area. The flue gas moves from the upper part of the denitration catalyst block 1 to the lower part of the denitration catalyst block 1. The flue gas is guided by the guide fillet 36 on the protective plate 31, allowing the flue gas to pass through the protective hole 32 on the protective plate 31, and then enter the protective sleeve 35, and then enter the denitration catalyst hole 2 from the protective sleeve 35 to carry out denitration reaction, and then pass through the adjusted adjustment hole.

Claims

1. A denitration catalyst structure, comprising a denitration catalyst block (1), characterized in that: The denitration catalyst block (1) is provided with a plurality of evenly distributed denitration catalyst holes (2), the denitration catalyst holes (2) penetrate the denitration catalyst block (1), a protective mechanism (3) is provided on the upper surface of the denitration catalyst block (1), and an adjustment mechanism (4) is provided on a surface of the denitration catalyst block (1) away from the protective mechanism (3); The protection mechanism (3) comprises a protection plate (31) arranged on the denitration catalyst block (1), the protection plate (31) being provided with a plurality of evenly distributed protection holes (32), the protection holes (32) corresponding to the denitration catalyst holes (2), clamping blocks (34) being fixed on both sides of the protection plate (31), and clamping grooves (33) being provided on both sides of the denitration catalyst block (1).

2. A denitration catalyst structure according to claim 1, characterized in that: A plurality of evenly distributed protective sleeves (35) are fixed on the protective plate (31), and the protective sleeves (35) correspond to the denitration catalyst holes (2).

3. A denitration catalyst structure according to claim 1, characterized in that: The edges of the protection holes (32) are each provided with flow guide fillets (36).

4. A denitration catalyst structure according to claim 1, characterized in that: The clamping block (34) is provided with a clamping inclined surface (37), and the clamping inclined surface (37) corresponds to the clamping groove (33).

5. A denitration catalyst structure according to claim 1, characterized in that: The regulating mechanism (4) comprises a regulating plate 1 (41) fixed on the denitration catalyst block (1), the regulating plate 1 (41) being provided with evenly distributed regulating holes, the regulating holes corresponding to the denitration catalyst holes (2), the regulating plate being slidably connected to two symmetrical sliding rods (43), and a plurality of regulating plates 2 (42) being fixed between the two sliding rods (43).

6. A denitration catalyst structure according to claim 5, characterized in that: A support block (45) is provided at one end of the sliding rod (43), and the support block (45) is fixedly connected to an adjustment block plate. An adjustment bolt (44) is rotatably connected to the support block (45), and the adjustment bolt (44) is threadedly connected to one end of the sliding rod (43).

7. A denitration catalyst structure according to claim 1, characterized in that: The denitration catalyst block (1) is sprayed with a reinforcing coating (5), and the reinforcing coating (5) is a silicone resin high-temperature paint.

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