Low-temperature and low-dust scr denitrification device for carbide slag cement kiln

Abstract

The utility model belongs to the field of SCR denitration technology, concretely relates to carbide slag cement kiln low temperature low dust SCR denitration device, including denitration jar, the front of denitration jar is provided with ammonia sprayer, the downside fixedly connected with three annular array arrangement's support foot of denitration jar, the inner wall fixedly connected with the air inlet pipe of denitration jar, the horizontal portion outside of air inlet pipe is provided with front filter cartridge. This scheme can use the flow of the input flue gas through the setting of the gas pipe, under the action of the filter screen, can use the front filter of the large particle impurities in the flue gas, under the action of the liquid inlet pipe, rotating pipe, nozzle and other structures, can spray the water, and then use the backwash of the filter screen, to ensure the flow of the filter screen, and under the action of the motor, gear two and other structures, can drive the rotating pipe, nozzle to rotate, to ensure the good cleaning effect of the nozzle.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the SCR denitration technical field, concretely relates to a carbide slag cement kiln low temperature low dust SCR denitration device. BACKGROUND

[0002] The selective catalytic reduction method (SCR) is a method for reducing nitrogen oxides into N2 and H2O by reducing agent under the action of a catalyst, so as to achieve the purpose of flue gas denitration. The SCR technology using ammonia (NH3) as reducing agent is the most mature and widely used fixed source flue gas denitration method at present. Under suitable temperature and space velocity, the SCR denitration efficiency is closest to 100%, which is the highest denitration efficiency of flue gas denitration method recognized at home and abroad at present, and is also the most widely used denitration technology.

[0003] In the utility model patent with patent authorization announcement number CN221492059U, a kind of industrial boiler low temperature dust removal SCR denitration equipment is disclosed, including deposition tank, reaction component, dust removal tank and connecting fastening component;Through dust removal tank and multiple filter sheets are combined, so that the larger particulate in the flue gas generated by boiler is adsorbed by filter sheet, prevent the deposition of particle in subsequent denitration reduction catalytic reaction, so as to cause blockage, make that catalytic reaction is not thorough, through flue gas access head and catalytic reaction tank are combined, so that flue gas can carry out denitration catalytic reduction reaction in catalytic reaction tank.

[0004] However, the existing carbide slag cement kiln low temperature low dust SCR denitration device also has certain defects, the existing carbide slag cement kiln low temperature low dust SCR denitration device although using prefilter screen to filter out large particle impurities of input flue gas uses, due to the attachment characteristics of particle impurities, long time use is easy to cause the blockage problem of filter screen. SUMMARY

[0005] The utility model aims at providing carbide slag cement kiln low temperature low dust SCR denitration device, solve the existing carbide slag cement kiln low temperature low dust SCR denitration device although using prefilter screen to filter out large particle impurities of input flue gas uses, due to the attachment characteristics of particle impurities, long time use is easy to cause the blockage problem of filter screen.

[0006] In order to achieve the above object, the utility model provides electric stone residue cement kiln low temperature low dust SCR denitration device, including denitration jar, the front of denitration jar is provided with ammonia injector, the downside of denitration jar is fixedly connected with three support feet of annular array arrangement, the inner wall of denitration jar is fixedly connected with air inlet pipe, the horizontal portion outside of air inlet pipe is provided with front filter cartridge, the inner wall of front filter cartridge is fixedly connected with gas delivery pipe, front filter cartridge is provided with filter mechanism, the downside of gas delivery pipe is fixedly connected with flow -through tube, the lower end of flow -through tube is fixedly connected with fixed frame, the inner wall of fixed frame is slidably connected with telescopic link, the outside of telescopic link is fixedly sleeved with moving disc, the inner side wall of moving disc and fixed frame is slidably connected, the outside of telescopic link is provided with spring, the upper end of telescopic link is fixedly connected with contact head, contact head is slidably connected with flow -through tube.

[0007] The principle of the utility model lies in: through the setting of flow -through tube, the input flue gas can be circulated, under the impact of high -speed flue gas, the contact head can be moved to drive the telescopic link to slide along the inner wall of fixed frame, and the moving disc is moved, so that the spring is deformed, under the deformation of spring, the fluid stress generated by the instantaneous circulation of flue gas can be released and offset, avoiding the impact damage of fluid stress on the pipeline structure.

[0008] Through the setting of filter screen, the large particle impurities in the input flue gas can be pre-filtered, under the action of liquid inlet pipe, the water body can be input, and under the action of rotating pipe, nozzle and other structures, the water body can be sprayed, and the filter screen can be backwashed, and when the motor driving output shaft rotates, gear two can be driven to rotate, under the meshing relationship, gear two drives gear one to rotate, and then drives the rotating pipe to rotate and drives the driven rod to rotate along the inner wall of front filter cartridge, and the rotating pipe is rotated and guided, to ensure the stable rotation of rotating pipe and nozzle, and the water body is dynamically sprayed, improving the backwashing effect of filter screen.

[0009] The utility model has the advantages that: through the setting of gas delivery pipe, the input flue gas can be circulated, under the action of filter screen, the large particle impurities in the flue gas can be pre-filtered, under the action of liquid inlet pipe, rotating pipe and nozzle and other structures, the water body can be sprayed, and then the filter screen can be backwashed, to ensure the circulation of filter screen, and under the action of motor, gear two and other structures, the rotating pipe and nozzle can be driven to rotate, to ensure the good cleaning effect of nozzle, through the setting of flow -through tube, the flue gas can be circulated, under the impact of high -speed flue gas, the telescopic link can be moved, and the spring is deformed, the fluid stress generated by the instantaneous circulation of flue gas can be released, to reduce the impact of fluid stress on the pipeline structure, and then prolong the durability of the pipeline structure.

[0010] Further, one end of the spring is welded with the inner bottom of the fixed frame, and the other end of the spring is welded with the moving disc, and the spring can be used for connecting the moving disc.

[0011] Further, a plurality of friction grooves are arranged on the surface of the contact head, and the plurality of friction grooves are arranged in a ring array on the contact head, and the friction grooves can improve the friction effect of the surface of the contact head.

[0012] Further, the filter mechanism comprises a fixed ring, the inner wall of the front filter cartridge is fixedly connected with the fixed ring, the inner wall of the fixed ring is fixedly connected with a filter screen, the inner wall of the front filter cartridge is fixedly connected with a liquid inlet pipe, the horizontal part of the liquid inlet pipe is provided with a rotating pipe through a sealing bearing, the vertical part of the rotating pipe is fixedly connected with a spray head, the horizontal part of the rotating pipe is fixedly sleeved with a gear one on the outside, the top of the inner side of the front filter cartridge is provided with a motor through a support, the output shaft of the motor is fixedly sleeved with a gear two on the outside, and the gear two is engaged with the gear one; through the action of the motor, the gear two and other structures, the rotating pipe can be driven to rotate, so that the spray head can rotate to spray water, and the cleaning effect of the filter screen can be improved.

[0013] Further, the filter screen is circular as a whole, and the filter screen is made of stainless steel wire material; through the arrangement of the stainless steel wire material, the durability of the filter screen can be ensured.

[0014] Further, a plurality of spray heads are arranged, and the plurality of spray heads are uniformly distributed on the vertical part of the rotating pipe; through the arrangement of the spray heads, the water can be sprayed.

[0015] Further, the vertical part of the rotating pipe is fixedly connected with a driven rod, and the driven rod is in contact with the inner wall of the front filter cartridge; through the arrangement of the driven rod, the rotating pipe can be guided to rotate. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure perspective view of the low-temperature and low-dust SCR denitration device of the carbide slag cement kiln in the embodiment of the present application;

[0017] Figure 2 It is a whole structure perspective view of the low-temperature and low-dust SCR denitration device of the carbide slag cement kiln in the embodiment of the present application; Figure 1 It is a flow tube internal structure schematic view of the low-temperature and low-dust SCR denitration device of the carbide slag cement kiln in the embodiment of the present application;

[0018] Figure 3 It is a whole structure perspective view of the low-temperature and low-dust SCR denitration device of the carbide slag cement kiln in the embodiment of the present application; Figure 1 It is a local front view sectional view of the low-temperature and low-dust SCR denitration device of the carbide slag cement kiln in the embodiment of the present application;

[0019] Figure 4The low-temperature and low-dust SCR denitration device of the carbide slag cement kiln Figure 2 The amplification view of the flow pipe of the low-temperature and low-dust SCR denitration device of the carbide slag cement kiln

[0020] Figure 5 The low-temperature and low-dust SCR denitration device of the carbide slag cement kiln Figure 3 The amplification view of the filtering mechanism of the low-temperature and low-dust SCR denitration device of the carbide slag cement kiln

[0021] The specific embodiments are further described in detail as follows:

[0022] The reference signs in the drawings of the specification include: a denitration tank 1, an ammonia sprayer 2, a support foot 3, an air inlet pipe 4, a front filter cylinder 5, a gas conveying pipe 6, a filtering mechanism 7, a flow pipe 8, a fixing frame 9, an extension rod 10, a moving disc 11, a spring 12, a contact head 13, a friction groove 14, a fixing ring 70, a filter screen 71, a liquid inlet pipe 72, a rotating pipe 73, a nozzle 74, a gear one 75, a motor 76, a gear two 77, and a driven rod 78. Specific embodiments

[0023] The embodiments are basically as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The low-temperature and low-dust SCR denitration device of the carbide slag cement kiln includes the denitration tank 1, the ammonia sprayer 2 is arranged on the front surface of the denitration tank 1, the three support feet 3 arranged in a ring array are fixedly connected to the lower side of the denitration tank 1, the air inlet pipe 4 is fixedly connected to the inner wall of the denitration tank 1, the front filter cylinder 5 is arranged on the outer side of the horizontal part of the air inlet pipe 4, the gas conveying pipe 6 is fixedly connected to the inner wall of the front filter cylinder 5, the flow pipe 8 is fixedly connected to the lower side of the gas conveying pipe 6, the fixing frame 9 is fixedly connected to the lower end of the flow pipe 8, the extension rod 10 is slidably connected to the inner wall of the fixing frame 9, the moving disc 11 is fixedly sleeved to the outer side of the extension rod 10, the moving disc 11 is slidably connected to the inner side wall of the fixing frame 9, the spring 12 is arranged on the outer side of the extension rod 10, the contact head 13 is fixedly connected to the upper end of the extension rod 10, and the contact head 13 is slidably connected to the flow pipe 8.

[0024] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 One end of the spring 12 is welded to the inner side bottom of the fixing frame 9, the other end of the spring 12 is welded to the moving disc 11, the spring 12 is used to connect the moving disc 11, a plurality of friction grooves 14 are formed in the surface of the contact head 13, and the plurality of friction grooves 14 are arranged in a ring array on the contact head 13. The friction grooves 14 can improve the friction effect of the surface of the contact head 13.

[0025] As shown in Figure 1 ,Figure 2 , Figure 3 , Figure 5 As shown, a filtration mechanism 7 is provided on the pre-filter cartridge 5. The filtration mechanism 7 includes a fixing ring 70. The fixing ring 70 is fixedly connected to the inner wall of the pre-filter cartridge 5. A filter screen 71 is fixedly connected to the inner wall of the fixing ring 70. An inlet pipe 72 is fixedly connected to the inner wall of the pre-filter cartridge 5. A rotating pipe 73 is installed on the horizontal part of the inlet pipe 72 through a sealed bearing. A nozzle 74 is fixedly connected to the vertical part of the rotating pipe 73. A gear 75 is fixedly sleeved on the outer side of the horizontal part of the rotating pipe 73. A motor 76 is installed on the top inner side of the pre-filter cartridge 5 through a support. A gear 77 is fixedly sleeved on the outer side of the output shaft of the motor 76. The gear 77 meshes with the gear 75. Through the action of the motor 76, gear 77, and other structures, the rotating pipe 73 can be driven to rotate, so as to ensure that the nozzle 74 sprays water in a rotating manner and improves the cleaning effect on the filter screen 71.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, the filter screen 71 is circular in shape and made of stainless steel wire. The use of stainless steel wire ensures the durability of the filter screen 71. Multiple nozzles 74 are provided and are evenly distributed on the vertical part of the rotating tube 73. The nozzles 74 can be used to spray water. A driven rod 78 is fixedly connected to the vertical part of the rotating tube 73. The driven rod 78 contacts the inner wall of the pre-filter cartridge 5. The driven rod 78 can guide the rotation of the rotating tube 73.

[0027] The specific implementation process of this utility model is as follows: Through the setting of the flow pipe 8, the input flue gas can be circulated and used. Under the impact of high-speed flue gas, the contact head 13 can be pushed to move, so as to drive the telescopic rod 10 to slide along the inner wall of the fixed frame 9 and drive the moving disk 11 to move, so that the spring 12 is deformed. Under the deformation of the spring 12, the fluid stress generated by the instantaneous flow of flue gas can be released and offset, avoiding the problem of fluid stress impacting and damaging the pipeline structure.

[0028] Through the setting of the filter screen 71, large particle impurities in the input flue gas can be pre-filtered. Under the action of the liquid inlet pipe 72, water can be input and used. Through the action of the rotating pipe 73, the spray head 74 and other structures, water can be sprayed, and the filter screen 71 can be backwashed. When the motor 76 drives the output shaft to rotate, the gear two 77 is driven to rotate. Under the meshing relationship, the gear two 77 drives the gear one 75 to rotate, thereby driving the rotating pipe 73 to rotate and driving the driven rod 78 to rotate along the inner wall of the front filter cylinder 5. The rotating pipe 73 is rotated and guided to ensure the stable rotation of the rotating pipe 73 and the spray head 74, and the water is dynamically sprayed to improve the backwashing effect of the filter screen 71.

[0029] Through the setting of the filter screen 71, large particle impurities in the input flue gas can be pre-filtered. Under the action of the liquid inlet pipe 72, water can be input and used. Through the action of the rotating pipe 73, the spray head 74 and other structures, water can be sprayed, and the filter screen 71 can be backwashed. When the motor 76 drives the output shaft to rotate, the gear two 77 is driven to rotate. Under the meshing relationship, the gear two 77 drives the gear one 75 to rotate, thereby driving the rotating pipe 73 to rotate and driving the driven rod 78 to rotate along the inner wall of the front filter cylinder 5. The rotating pipe 73 is rotated and guided to ensure the stable rotation of the rotating pipe 73 and the spray head 74, and the water is dynamically sprayed to improve the backwashing effect of the filter screen 71.

[0030] It should be pointed out that in the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be regarded as the protection scope of the present application, which will not affect the effect and practicality of the patent. The protection scope claimed in this application should be subject to the content of its claims, and the specific implementation mode and the like in the description can be used to explain the content of the claims.

Claims

1. A low-temperature, low-dust SCR denitrification device for carbide slag cement kilns, comprising a denitrification tank, characterized in that: The denitrification tank is equipped with an ammonia injector on its front side. Three supporting legs arranged in a circular array are fixedly connected to the lower side of the tank. An air inlet pipe is fixedly connected to the inner wall of the tank. A pre-filter cartridge is installed on the outer side of the horizontal portion of the air inlet pipe. An air supply pipe is fixedly connected to the inner wall of the pre-filter cartridge. A filtering mechanism is installed on the pre-filter cartridge. A flow pipe is fixedly connected to the lower side of the air supply pipe. A fixing frame is fixedly connected to the lower end of the flow pipe. A telescopic rod is slidably connected to the inner wall of the fixing frame. A movable disc is fixedly sleeved on the outer side of the telescopic rod. The movable disc is slidably connected to the inner wall of the fixing frame. A spring is installed on the outer side of the telescopic rod. A contact head is fixedly connected to the upper end of the telescopic rod. The contact head is slidably connected to the flow pipe.

2. The low-temperature, low-dust SCR denitrification device for carbide slag cement kilns according to claim 1, characterized in that: One end of the spring is welded to the inner bottom of the fixed frame, and the other end of the spring is welded to the movable disk.

3. The low-temperature, low-dust SCR denitrification device for carbide slag cement kilns according to claim 1, characterized in that: The surface of the contact head is provided with multiple friction grooves, which are arranged in a ring array on the contact head.

4. The low-temperature, low-dust SCR denitrification device for carbide slag cement kilns according to claim 1, characterized in that: The filtration mechanism includes a fixing ring. The inner wall of the pre-filter cylinder is fixedly connected to the fixing ring, and the inner wall of the fixing ring is fixedly connected to the filter screen. The inner wall of the pre-filter cylinder is fixedly connected to the liquid inlet pipe. The horizontal part of the liquid inlet pipe is equipped with a rotating pipe through a sealed bearing. The vertical part of the rotating pipe is fixedly connected to a nozzle. A gear one is fixedly sleeved on the outer side of the horizontal part of the rotating pipe. The top inner side of the pre-filter cylinder is equipped with a motor through a support member. A gear two is fixedly sleeved on the outer side of the output shaft of the motor. The gear two meshes with the gear one.

5. The low-temperature, low-dust SCR denitrification device for carbide slag cement kilns according to claim 4, characterized in that: The filter screen is circular in shape and is made of stainless steel wire.

6. The low-temperature, low-dust SCR denitrification device for carbide slag cement kilns according to claim 4, characterized in that: The nozzles are provided in multiple ways, and the multiple nozzles are evenly distributed on the vertical part of the rotating tube.

7. The low-temperature, low-dust SCR denitrification device for carbide slag cement kilns according to claim 4, characterized in that: A driven rod is fixedly connected to the vertical part of the rotating tube, and the driven rod is in contact with the inner wall of the pre-filter cylinder.

Images