CN210138746U - Novel cement kiln denitration electric dust removal system - Google Patents
Novel cement kiln denitration electric dust removal system Download PDFInfo
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- CN210138746U CN210138746U CN201920540486.6U CN201920540486U CN210138746U CN 210138746 U CN210138746 U CN 210138746U CN 201920540486 U CN201920540486 U CN 201920540486U CN 210138746 U CN210138746 U CN 210138746U
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Abstract
The utility model provides a novel cement kiln denitration electric dust removal system, includes casing, row's ash subassembly, high-pressure subassembly, be equipped with negative pole subassembly, anode assembly in the casing, negative pole subassembly and anode assembly interval distribution are in the casing, the both sides of casing are equipped with import smoke box and export smoke box respectively, airflow distribution plate has evenly been arranged with the casing junction to import smoke box, the high-pressure subassembly sets up at the top of casing and the cathode assembly is connected, the bottom of casing is equipped with row's ash subassembly. The utility model discloses can reduce dusty concentration to 30g Nm or lower to below 20g Nm full-length year, solve the big problem of dusty content in the cement kiln tail flue gas, conveniently select more economic catalyst form and specification, increase substantially the machinery and the chemical life of catalyst, increase the catalyst lectotype airspeed, show reduction catalyst volume, improve denitration efficiency.
Description
Technical Field
The utility model belongs to the technical field of cement trade flue gas technology purifies and specifically relates to a novel cement kiln denitration electric dust removal system.
Background
At present, most cement enterprises adopt an SNCR (selective non-catalytic reduction) denitration technology, the SNCR denitration efficiency can reach 60%, and NOx is discharged<400mg/Nm3With the increasing environmental protection situation in China, the requirements on pollutant emission are more and more strict, the national environmental protection work in 2018 puts forward more strict emission control requirements on the cement industry, the SCR denitration technology is promoted to be applied to the cement industry, and the aim is to control the NOx emission to be 100mg/Nm3The following. Therefore, the SCR denitration technology with higher denitration efficiency is imperative, and NOx in the flue gas is reacted with NH under the action of the catalyst3Reaction to produce N2And H2O, the catalysts used are predominantly honeycomb catalysts. Because the cement kiln flue gas dust concentration is high, the catalyst is easy to block after the cement kiln flue gas dust concentration directly enters the reactor, and the denitration efficiency is reduced, so the dust concentration must be properly reduced before the flue gas enters the SCR reactor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel cement kiln denitration electrostatic precipitator system to solve the problem that proposes in the above-mentioned background art.
The utility model adopts the technical proposal that: the utility model provides a novel cement kiln denitration electric dust removal system, includes casing, row's ash subassembly, high-pressure subassembly, be equipped with negative pole subassembly, anode assembly in the casing, negative pole subassembly and anode assembly interval distribution are in the casing, the both sides of casing are equipped with import smoke box and export smoke box respectively, airflow distribution plate has evenly been arranged with the casing junction to import smoke box, the high-pressure subassembly sets up at the top of casing and the cathode assembly is connected, the bottom of casing is equipped with row's ash subassembly.
Preferably, the cathode assembly comprises a plurality of cathode lines, a cathode frame and a cathode rapping dust-cleaning mechanism, wherein the cathode lines are uniformly arranged on the cathode frame, and the cathode rapping dust-cleaning mechanism is arranged on one side of the cathode frame.
Preferably, the anode assembly comprises an anode plate, anode plate fixing flat steel and an anode rapping dust removal mechanism, the anode plate is a plurality of pieces and is fixed by the anode plate fixing flat steel, and the anode rapping dust removal mechanism is positioned at the lower side of the anode plate.
As preferred, positive pole shakes and beats deashing mechanism is including shaking the base, it is equipped with transmission, cam to shake on the base, transmission includes transfer line, motor, the output shaft and the transfer line one end of motor are connected, the other end and the cam of transfer line are connected, the cam is by putting on the power arm of transmission lever, the transmission lever articulates on shaking the base, the resistance arm one end and the spring coupling of transmission lever, the resistance arm other end and the brush board of transmission lever are connected, the lateral part of shaking the base is equipped with the screw rod cover, be equipped with the screw rod in the screw rod cover, the screw rod passes through the output shaft of shaft coupling and screw rod motor, screw rod cover lateral part is equipped with the guide bar cover, be equipped with the guide arm in the guide bar cover.
Preferably, the cathode wire comprises a first pole wire, a second pole wire and a fixing component, wherein one side of the first pole wire and one side of the second pole wire are respectively provided with a bending part, the angle of the bending part is 90 degrees, and the other sides of the first pole wire and the second pole wire are respectively cut into zigzag discharge sheets at equal intervals; and the bent parts of the first polar line and the second polar line are symmetrically overlapped and connected through a fixing component.
Preferably, the fixing assembly comprises a sleeve, a bolt and a nut, two ends of the bolt are respectively connected with the bending parts of the first polar line and the second polar line and fixed through the nut, and the sleeve is sleeved at the outer end of the bolt.
Preferably, the cathode lines and the anode plates are arranged in the shell in an equidistant, side-by-side and staggered mode.
Preferably, the adjacent anode plates are connected into a whole through fixed flat steel.
Preferably, the air flow distribution plate is a louver type or X-type or round hole type distribution plate.
The utility model discloses can reduce dusty concentration to 30g Nm or lower to below 20g Nm full-length year, solve the big problem of dusty content in the cement kiln tail flue gas, conveniently select more economic catalyst form and specification, increase substantially the machinery and the chemical life of catalyst, increase the catalyst lectotype airspeed, show reduction catalyst volume, improve denitration efficiency.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the cathode and anode of FIG. 1;
FIG. 3 is a cross-sectional view of the middle anode rapping ash-removing mechanism of the present invention;
FIG. 4 is a schematic structural view of a middle cathode line according to the present invention;
fig. 5 is a side view of fig. 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a novel cement kiln denitration electric dust pelletizing system, includes casing 1, row's ash subassembly 4, high-pressure subassembly 5, be equipped with negative pole subassembly 2, positive pole subassembly 3 in the casing 1, negative pole subassembly 2 and positive pole subassembly 3 interval distribution are in casing 1, the both sides of casing 1 are equipped with import smoke box 11 and export smoke box 13 respectively, airflow distribution plate 12 has evenly been arranged with the casing junction to import smoke box. The air flow distribution plate 12 is a louver type or X type or round hole type distribution plate.
The high-voltage assembly 5 is arranged at the top of the shell and connected with the cathode assembly 2, and the bottom of the shell 1 is provided with the ash discharging assembly 4.
The cathode assembly 2 comprises a cathode line 21, a cathode frame 22 and a cathode rapping dust-cleaning mechanism 23, wherein the cathode line 21 is a plurality of lines and is uniformly arranged on the cathode frame 22, and the cathode rapping dust-cleaning mechanism 23 is arranged on one side of the cathode frame 22.
The anode component 3 comprises anode plates 31, anode plate fixing flat steels 32 and an anode rapping dust-cleaning mechanism 33, wherein the anode plates 31 are a plurality of positive and negative alternate arrangements of every two adjacent anode plates, the middle part is fixed by the anode plate fixing flat steels 32, and the anode rapping dust-cleaning mechanism 33 is positioned at the lower side of the anode plates 31.
The positive pole shakes and beats deashing mechanism 33 is including shaking base 231, it is equipped with transmission 232, cam 233 on the base to shake, transmission includes transfer line 2322, motor 2321, the output shaft and the transfer line 2322 one end of motor 2321 are connected, the other end and the cam 233 of transfer line are connected, cam 233 leans on the power arm of putting at transmission lever 236, transmission lever 236 articulates on shaking the base, resistance arm one side and the spring 237 of transmission lever 236 are connected, the resistance arm opposite side and the brush board 235 of transmission lever 236 are connected, the lateral part of shaking the base is equipped with screw rod cover 2381, screw rod cover 2381 overlaps puts on the screw rod 238, screw rod 238 passes through the output shaft of shaft coupling and screw rod motor 2382 to the screw rod in the drive screw rod cover reciprocates. The lateral part of the screw rod sleeve 2381 is provided with a guide rod sleeve 2391, a guide rod 239 is arranged in the guide rod sleeve 2391, and the guide rod slides in the guide rod sleeve to play a guiding role, so that the brush plate can vertically hit the anode plate back and forth, and dust on the anode plate falls. The cathode lines 21 and the anode plates 31 are arranged side by side in a staggered manner according to the spacing to form a plurality of discharge channels, so as to form an electric field.
The distance between homopolarity is 300 mm-500 mm, and the distance between heteropolarity is 150 mm-250 mm.
The cathode line 21 comprises a first polar line 211, a second polar line 212 and a fixing component, wherein the first polar line 211 and the second polar line 212 are made of thin steel plates, and are bent to 90 degrees on one side, and cut into zigzag discharge sheets on the other side at equal intervals; the bent parts of the first polar line 211 and the second polar line 212 are symmetrically overlapped and connected through a fixing component.
The bent parts of the first polar line 211 and the second polar line 212 are symmetrically overlapped at the center of the polar line to form a rectangular section so as to enhance the rigidity and the deformation resistance of the polar line.
Every two adjacent zigzag discharge sheets 218 on the other sides of the first and second pole lines 211 and 212 form a certain angle to form two rows of discharge teeth which are staggered with each other.
The discharge point of negative pole line 21 is many, and discharge current is big, and the sawtooth is as an organic whole with the polar line, can not produce the phenomenon of falling the line, and rigidity and intensity improve greatly behind the hem of first polar line 211, second polar line 212, and the deflection is little can not influence the utmost point interval under the high temperature, can effectively improve dust collection efficiency.
The fixing assembly comprises a sleeve 213, a bolt 214 and a nut 215, wherein two ends of the bolt 214 are respectively connected with the bent parts of the first pole wire 211 and the second pole wire 212 and are fixed through the nut 215, and the sleeve 213 is sleeved outside the bolt 214.
The anode plate 31 is a 220C-shaped plate which has the characteristics of high temperature resistance and difficult deformation.
A spiral gate 16 for maintenance is arranged between the ash hopper 15 and the ash discharging component 4.
The ash bucket 15 has certain strength, stores high-temperature dust and has no deformation and a large ash sliding angle, the angle of the ash bucket is larger than 70 degrees, and an arc plate is arranged at the edge of the ash bucket to prevent the collapse accident of the ash bucket caused by ash accumulation.
The working principle is as follows: when high-temperature high-dust flue gas enters from the inlet smoke box 11, the flue gas firstly passes through the airflow distribution plate 12 at the front end of the electric field and is uniformly distributed, after the uniform gas enters the electric field, the high-voltage assembly 5 supplies power to the cathode assembly 2, so that each cathode and anode channel of the electric field generates an uneven electric field, the passing flue gas is ionized, charged and moves towards the anode plate, and finally the flue gas is deposited on the anode plate 31, the anode plate 31 is periodically shaken by the anode shaking and cleaning mechanism 33, so that the collected dust falls into the lower ash hopper 15, and then the collected dust is conveyed out through the ash discharge assembly 4 at the lower part of the ash hopper 15.
The dust accumulated on the cathode wire 21 is also periodically rapped on the cathode frame 22 by the cathode rapping dust-cleaning mechanism 23, so that the collected dust falls into the lower dust hopper 15 and is conveyed out by the dust-discharging component 4 at the lower part of the dust hopper 15.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a novel cement kiln denitration electric dust removal system, includes casing, row's ash subassembly, high-pressure subassembly, its characterized in that be equipped with negative pole subassembly, anode assembly in the casing, negative pole subassembly and anode assembly interval distribution are in the casing, the both sides of casing are equipped with import smoke box and export smoke box respectively, airflow distribution plate has evenly been arranged with the casing junction to import smoke box, the high-pressure subassembly sets up at the top of casing and the cathode assembly is connected, the bottom of casing is equipped with row's ash subassembly.
2. The novel cement kiln denitration electric dust removal system of claim 1, wherein the cathode assembly comprises a plurality of cathode lines, a cathode frame and a cathode rapping dust removal mechanism, the cathode lines are uniformly arranged on the cathode frame, and the cathode rapping dust removal mechanism is arranged on one side of the cathode frame.
3. The novel cement kiln denitration electric dust removal system as claimed in claim 1, wherein the anode assembly comprises an anode plate, anode plate fixing flat steel, and an anode rapping dust removal mechanism, wherein the anode plate is provided with a plurality of blocks and fixed by the anode plate fixing flat steel, and the anode rapping dust removal mechanism is located at the lower side of the anode plate.
4. The novel cement kiln denitration electric dust removal system of claim 3, characterized in that the positive pole shakes deashing mechanism and beats the base including shaking, it is equipped with transmission, cam to shake on the base, transmission includes transfer line, motor, the output shaft and the transfer line one end of motor are connected, the other end and the cam of transfer line are connected, the cam leans on the power arm at the transmission lever, the transmission lever articulates on shaking the base, the resistance arm one end and the spring coupling of transmission lever, the resistance arm other end and the brush board of transmission lever are connected, the lateral part of shaking the base is equipped with the screw rod cover, be equipped with the screw rod in the screw rod cover, the screw rod passes through the output shaft of shaft coupling and screw rod motor, screw rod cover lateral part is equipped with the guide bar cover, be equipped with the guide arm in the guide bar cover.
5. The novel cement kiln denitration electric dust removal system according to claim 2, wherein the cathode wire comprises a first electrode wire, a second electrode wire and a fixing component, one side of the first electrode wire and one side of the second electrode wire are respectively provided with a bending part, the angle of the bending part is 90 degrees, and the other sides of the first electrode wire and the second electrode wire are respectively cut into zigzag discharge sheets at equal intervals; and the bent parts of the first polar line and the second polar line are symmetrically overlapped and connected through a fixing component.
6. The novel cement kiln denitration electric dust removal system of claim 5, wherein the fixing assembly comprises a sleeve, a bolt and a nut, two ends of the bolt are respectively connected with the bending parts of the first polar line and the second polar line and are fixed through the nut, and the sleeve is sleeved at the outer end of the bolt.
7. The novel cement kiln denitration electric precipitation system of claim 2, wherein the cathode lines and the anode plates are arranged in the shell in an equidistant, side-by-side staggered manner.
8. The novel cement kiln denitration electric precipitation system of claim 3, wherein the adjacent anode plates are connected into a whole through a fixed flat steel.
9. The novel cement kiln denitration electric dust removal system as claimed in claim 1, wherein the air flow distribution plate is a shutter type or X type or circular hole type distribution plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920540486.6U CN210138746U (en) | 2019-04-19 | 2019-04-19 | Novel cement kiln denitration electric dust removal system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920540486.6U CN210138746U (en) | 2019-04-19 | 2019-04-19 | Novel cement kiln denitration electric dust removal system |
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| CN210138746U true CN210138746U (en) | 2020-03-13 |
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| CN201920540486.6U Active CN210138746U (en) | 2019-04-19 | 2019-04-19 | Novel cement kiln denitration electric dust removal system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558692A (en) * | 2022-01-24 | 2022-05-31 | 海城华宇镁砂有限公司 | Electric dust removal device for dead-burned magnesia kiln |
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2019
- 2019-04-19 CN CN201920540486.6U patent/CN210138746U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558692A (en) * | 2022-01-24 | 2022-05-31 | 海城华宇镁砂有限公司 | Electric dust removal device for dead-burned magnesia kiln |
| CN114558692B (en) * | 2022-01-24 | 2024-03-29 | 海城华宇镁砂有限公司 | Electric dust collector for dead burned magnesia kiln |
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Address after: 7 / F, block B, Huajing Plaza, No.20, Fenghui South Road, hi tech Zone, Xi'an, Shaanxi 710000 Patentee after: Xi'an Longjing Environmental Protection Technology Co.,Ltd. Address before: 7 / F, block B, Huajing Plaza, No.20, Fenghui South Road, hi tech Zone, Xi'an, Shaanxi 710000 Patentee before: XI'AN XIKUANG ENVIRONMENTAL PROTECTION Co.,Ltd. |
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