CN103464431B - Deashing device of smoke SCR urea denitration equipment - Google Patents
Deashing device of smoke SCR urea denitration equipment Download PDFInfo
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- CN103464431B CN103464431B CN201310398125.XA CN201310398125A CN103464431B CN 103464431 B CN103464431 B CN 103464431B CN 201310398125 A CN201310398125 A CN 201310398125A CN 103464431 B CN103464431 B CN 103464431B
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Abstract
The invention discloses a deashing device of smoke SCR urea denitration equipment. The deashing device comprises a pyrolysis chamber for providing a reaction space to dissolved urea and smoke, a rotating rod arranged at the bottom in the pyrolysis chamber, a spiral blade arranged on the rotating rod, a crystal collecting port arranged on a pyrolysis chamber wall below the rotating rod, and a containing box connected on the outer side of the crystal collecting port, two ends of the rotating rod are fixed on a side wall of a pyrolysis chamber tail pipe, and a driving motor driving the rotating rod to work is mounted outside the pyrolysis chamber. Crystals at the bottom of the pyrolysis chamber are timely treated by a packing auger, so that temporary or intermittent crystallization is timely processed, and the problem that a lot of crystals appear in a short time due to a vicious circle caused after a small amount of crystals appear is avoided, working time of denitration equipment is increased, the number of maintenance is reduced, and working efficiency is improved. Mechanical crystal removing is adopted, so that labor amount of workers is reduced, and processing speed is increased.
Description
Technical field
The present invention relates to mechanical field, be specifically related to a kind of can the ash slag cleaning device of the indoor crystallization of urea pyrolysis of easy cleaning process boiler smoke.
Background technology
The place of boiler is used in thermal power plant one class, boiler can produce a large amount of flue gas when burning, specify that this type of flue gas has to pass through process and just can be discharged in air according to relevant, what in this type of flue gas, content was maximum is sulphur and nitre, therefore current when processing, normal employing purifies flue gas for the equipment of both respectively or simultaneously, and the existing means adopted desulfurization in flue gas are FGD technology, are specifically divided into again the various ways such as wet desulphurization, dry desulfurization.And denitrating flue gas mainly adopts is SCR technology, the reaction of nitrogen oxides that SCR technology mainly utilizes ammonia to enter in reactor and flue gas generates nitrogen, and reach purification object, the source of ammonia comprises liquefied ammonia, ammoniacal liquor and urea, wherein the danger of liquid nitrogen is higher, and the restriction when storing and use is too large; And the large operating cost of ammoniacal liquor occupation area of equipment is high; What therefore use was at present maximum is urea ammonia, urea ammonia adopts pyrolysismethod, namely first urea is dissolved, concentration is 40 ~ 50%, then after nozzle atomization, spray into pyrolysis chamber, in pyrolysis chamber, atomization drop and flue gas react, be normal pressure in pyrolysis chamber and temperature at about 300 ~ 500 DEG C, origin of heat in pyrolysis chamber, in the burning of natural gas or diesel oil, adopts pyrolysismethod all to require higher to the temperature of whole course of reaction, the distribution of gas flowfield and level of control.
Pyrolysis chamber is the pipeline or reactor reinforced, when occurring that urea liquid cannot be atomized or be atomized incomplete, urea liquid can be attached on the furnace wall of pyrolysis chamber, solid crystal thing is formed after cooling, the appearance of this crystal is one and exceedes and drill stronger increasing process, once there is urea crystals factor and continuous service, due to the accumulation of crystallization, the destruction that flow field hot-fluid distributes can be caused, crystal can surge suddenly in the some time, time serious, whole pyrolysis oven tail pipe can be blocked in a short period of time, and once occur that this situation just can only be shut down and open pyrolysis chamber and remove, this just delays the normal operation of whole power plant.
Summary of the invention
The problem of removing can only be shut down for solving the urea crystals carrying out producing in the pyrolysis chamber of pyrolysis denitration device to flue gas in prior art, the invention provides ash slag cleaning device in a kind of SCR pyrolysis chamber that can remove pyrolysis chamber's intercrystalline at any time, concrete scheme is as follows: a kind of ash slag cleaning device of flue gas SCR urea denitration device, comprise the pyrolysis chamber that reaction compartment is provided for dissolving rear urea and flue gas, it is characterized in that, described ash slag cleaning device comprises the swingle being arranged on pyrolysis chamber's inner bottom part and the spiral vane be arranged on swingle, be arranged on connecing brilliant mouth and being connected to the storage case connect outside brilliant mouth below swingle on pyrolysis locular wall, the two end axles of described swingle is fixed on the sidewall of pyrolysis chamber's tail pipe, the drive motors driving swingle work is installed in the outside of pyrolysis chamber.
For avoiding the temperature affected in pyrolysis chamber: described in meet brilliant mouth place and be provided with movable sealing plate.
The crystallization of solidifying is cleared up: described spiral vane is made up of multiple independently blade and is provided with interval between each blade for ease of helical blade.
Clear up the crystal be attached on helical blade for convenience: described blade is for being movably arranged on swingle, wherein on swingle, the little chute of the inner big uncork of multistage is set by the swing-around trajectory of spiral vane, the two bottom sides of blade is respectively arranged with the clamp groove of clamping chute dual-side, the length of blade is less than the length of chute, blade is stuck on chute by clamp groove and is arranged on swingle, blade is provided with fixing hole and loose slot, on fixing hole, pin fixes a pull bar, and the other end of pull bar is movably fixed in the loose slot of adjacent blades.
Connection for ease of between each blade: it is U-shaped end that described pull bar is connected one end with loose slot, the opening of U-shaped end is provided through loose slot and the fixed bar fixed with U-shaped dual-side respectively.
For convenience blade is installed: one end of described chute is provided with the insert port of the clamp groove insertion chute for blade, and insert port is provided with shrouding, and described shrouding is fixed in insert port by axle or screw.
Enter chute for preventing crystal: the length of described blade is less than the length of chute, the top gripper edge length of clamp groove is greater than the bottom gripper edge length of clamp groove, and the chute exposed covers by the top gripper edge grown when blade is positioned at chute one end.
For making can to interact between blade: the length of described loose slot equals the length that chute deducts blade.
For improving the mobility of blade: the termination of described swingle is provided with spring, one end of described spring is connected the other end and is connected with adjacent blade with swingle, pyrolysis chamber's inwall that swingle termination is corresponding is provided with the driving lever crossing with spring swing-around trajectory.
For reducing the friction between blade and chute: in described chute or the bottom of blade is provided with ball.
The present invention processes the crystal bottom pyrolysis chamber in time by auger, crystalline polamer that is temporary or discontinuity is processed at any time, avoid owing to causing vicious circle after a small amount of crystallization appearance, the a large amount of produced problem of short time intercrystalline, extend the working time of denitration device, decrease maintenance times, improve operating efficiency.Meanwhile, adopt machinery except the brilliant amount of labour decreasing workman, the impact of temperature and flue gas can not be considered, improve processing speed.The blade that utilization activity is installed avoids the problem that crystallization and freezing cannot remove on blade, by the mutual action of spring and driving lever, further increases the mobility of blade, accelerates the process eliminating solidification and crystallization thing.Utilize pull bar can keep the global shape of each individual vanes, mutual action between each blade can be made simultaneously, improve the effect that individual blade abolishes solidification and crystallization thing.Blade and chute adopt the structure of ball-type to reduce friction, improve the flexibility of blade movement.Be very effective of the present invention, carries out scarfing cinder to pyrolysis chamber under can realizing non-stop-machine state, improves fume treatment efficiency, decrease the labour intensity of workman simultaneously.
Accompanying drawing explanation
Fig. 1 structural representation of the present invention;
The structural representation of Fig. 2 individual vanes;
The structural representation that Fig. 3 blade and swingle activity are installed;
Fig. 4 is with the sliding groove structure schematic diagram of shrouding;
The connection diagram of Fig. 5 blade and blade;
Fig. 6 blade pull structural representation;
Attached number in the figure illustrates: 1-pyrolysis chamber, 2-tail pipe, 3-ash slag cleaning device, 301-drive motors, 302-spiral vane, 303-swingle, 304-clamp groove, 305-top gripper edge, 306-bottom gripper edge, 307-chute, 308-insert port, 309-shrouding, 310-pull bar, 311-loose slot, 312-fixed bar, 313-fixing hole, 314-spring, 315-driving lever, 316-blade, 4-storage case, 5-connect brilliant mouth, 501-shrouding.
Detailed description of the invention
As shown in Figure 1, the ash slag cleaning device of flue gas SCR urea denitration device disclosed by the invention, mainly be arranged on the position of boiler smoke discharge pipe, it generates urea liquid after utilizing urea and aquathermolysis, by special shower nozzle, urea liquid is atomized, then mix with flue gas, the ammonia in urea liquid and the nitre in flue gas is utilized to react, generate NH3, H2O and CO2, thus reach the object of purifying smoke, critical piece comprises the urea dissolver of dissolved urea, the pyrolysis chamber 1 of reaction compartment is provided for dissolving rear urea and flue gas, flue gas is entered by the top of pyrolysis chamber 1, discharged by the tail pipe of bottom after reacting with atomize urea, shower nozzle is arranged on the top of pyrolysis chamber, the ammoniacal liquor of atomization is inwardly sprayed, atomized ammonia can carry out hybrid reaction with the flue gas in pyrolysis chamber at a certain temperature, under normal circumstances atomized ammonia can with the hybrid reaction of flue gas in used up completely, the impurity only had in water and First air and flue gas of being discharged by tail pipe, because the blast of First air is very large, above-mentioned dust can discharge tail pipe with flue gas, but because the mixing uniformity between the control of the 1 pair of temperature in pyrolysis chamber and reacting gas has very high requirement, once can not fully react the phenomenon that just there will be atomized ammonia cryogenic temperature condensation Cheng Jing, and this phenomenon serious time will affect giving vent to anger of tail pipe, process then thoroughly can block tail pipe not in time, thus whole denitrating system is quit work, for preventing the generation of above-mentioned phenomenon, ash slag cleaning device 3 is provided with in the tail pipe of the present invention specially bottom pyrolysis chamber, described ash slag cleaning device 3 comprises the swingle 303 be arranged on bottom pyrolysis chamber, be arranged on the spiral vane 302 on swingle 303, drive the drive motors 301 of swingle work, be arranged on connecing brilliant mouth 5 and being connected to the storage case 4 connect outside brilliant mouth below swingle 303 on pyrolysis locular wall, the two end axles of described swingle 303 is fixed on the sidewall of pyrolysis chamber 1 tail pipe 2, described drive motors 4 is arranged on outside, pyrolysis chamber 1 and is worked by drive shaft swingle 303.This programme processes crystal bottom pyrolysis chamber 1 and impurity in time by auger structure, crystalline polamer that is temporary or discontinuity is processed immediately, avoid owing to causing vicious circle after a small amount of crystallization appearance, the a large amount of produced problem of short time intercrystalline, extend the working time of denitration device, decrease maintenance times, improve operating efficiency.Meanwhile, adopt machinery except the brilliant amount of labour decreasing workman, the impact of temperature and flue gas can not be considered, improve processing speed.During use, the rotation of swingle can be realized by drive motors 301, thus push the crystal and impurity that are deposited in tail pipe place to connect brilliant mouth 5 direction, fall in storage case 4 by connecing brilliant mouth 5, then in due course storage case 4 is emptied, repeat the cleaning that namely said process realizes pyrolysis chamber's intercrystalline.
For avoiding connecing the normal work that brilliant mouth 5 affects pyrolysis chamber 1, the present invention is provided with movable sealing plate 501 meeting brilliant mouth 5 place.When not needing cleaning, brilliant mouth 5 will be connect by sealing plate 501 and sealing, preventing the temperature affected in pyrolysis chamber, the double swing doors that concrete sealing plate 501 can adopt board plug type or open to storage case 4 direction.Adopt same with connecing brilliant mouth 5 of concrete storage case 4 is tightly connected, not affect the air temperature and current change of pyrolysis chamber as much as possible, connected mode can adopt the fastening structure or soft resistant to elevated temperatures rubber tube connection or engagement thread connection that are contacted by sealing gasket.And the structure such as the structure of storage case 4 father-in-law's shape that can be the little inside of opening large, trapezoidal, box-shaped.Simultaneously for ease of carrying storage case 4, the fork truck road inserted is set in the bottom of storage case 4, or roller, slideway structure are set for fork of forklift truck.Install for convenience of storage case 4 and the sealing connecing brilliant mouth 5 simultaneously, arrange hydraulic elevating platform in the bottom of storage case, hydraulic elevating platform can rotate simultaneously, facilitates the lift adjustment of storage case and spins.
As shown in Figure 2, better promote crystallization for convenience of spiral vane and avoid affecting the smoke discharging effect of tail pipe, described spiral vane 302 of the present invention is made up of multiple independently blade 316 and is provided with interval between each blade 316.Spiral vane 302 is arranged around swingle 303 on the whole, but whole spiral vane 302 is made up of multiple independently blade 316, keep at a certain distance away between each blade 316, concrete distance is determined according to the size of tail pipe 1, also can according to design human needs setting, adopt spaced blade 316 to make swingle 302 in rotary course, blade 316 can promote or destroy the crystallization condensed on swingle or blade, avoids the problem that crystallization cannot be removed with swingle rotation.Adopt the blade 316 of said structure can independently be welded on swingle 303, be connected bottom also can adopting and top is the shape of broached-tooth design.
As Fig. 3, shown in 4, for improving the effect removing crystallization, prevent crystallization and freezing from cannot remove at same swingle synchronous axial system simultaneously, described swingle 303 of the present invention and blade 316 are movable installation, wherein on swingle 303, the little chute 307 of the inner big uncork of multistage is set by the swing-around trajectory of spiral vane, namely chute 307 is arranged along the spiral of the shaft intermittent of swingle 303, the two bottom sides of blade 316 is respectively arranged with the clamp groove 304 of clamping chute dual-side, the length of blade 316 is less than the length of chute 307, such structure makes blade 316 can move around along chute 307 after stressed, blade 316 is stuck in chute 307 by clamp groove 304 and is arranged on swingle 303, blade 316 after grafting only can move along chute 307 direction and can not move left and right on swingle 303, blade 316 is provided with fixing hole 313 and loose slot 311, on fixing hole 313, pin fixes a pull bar 310, the other end of pull bar 310 is movably fixed in the loose slot 311 of adjacent blades.Make blade 316 can either move in chute 307 by the way, utilize again pull bar 310 that each blade 316 is fixed into an entirety simultaneously, blade 316 is avoided to occur tilting, adopt the mode activity steady brace 310 of pin, pull bar 310 can be made to move with blade 316 and do not affect the mobile effect of blade 316, can prevent from again pull bar 310 condenses crystallization simultaneously.If crystallization and freezing is on blade when swingle 303 rotates, then blade 316 can be limited on the current location of chute 307 by crystallization, and by the blade 316 of crystallization and freezing of other promotes be solidified blade under the effect of pull bar 310, thus make to be solidified blade and produce pulling force forward or backward or thrust, thus loosen solidification and crystallization and make it be shifted onto by blade 316 to connect brilliant mouth 5 and discharge, entirely prevented the problem that crystallization and freezing cannot be removed on auger.
During specific works, swingle 303 rotates under the driving of drive motors 301, length due to chute 307 is greater than the length of blade 316, therefore swingle 303 is when rotating, if blade 316 by crystallization and freezing in position, then there will be the rotating speed of swingle 303 and the nonsynchronous phenomenon of rotating speed of blade 316, in this case swingle 303 can with the crystallization of moving vane 316 shock coagulation on blade, the pull bar simultaneously connected between each blade can pull or promote the blade movement of being lived by crystallization and freezing, improve the dynamic impact problem of being lived blade by crystallization and freezing, the length that the length of the loose slot 311 on each blade 316 equals chute 307 deducts the length of blade 316, namely when previous blade 316 moves to the top of chute 307, pull bar 310 other end on it is positioned at the top of a rear blade loose slot 311, then blade 316 is now positioned at the top of its chute 307 equally, in this case, when previous blade 316 moves to the rearmost end of its chute 307, pull bar 310 other end on it is positioned at loose slot 311 rearmost end of a rear blade 316, now a rear blade 316 can remain on the position of its chute 307 top, the motion of previous pull bar 310 can not impact it, but now a rear blade can be subject to the impact of following vane 316 position again.For improving pull bar to the stablizing effect of blade, pull bar 310 of the present invention is connected one end with loose slot 311 be U-shaped end, the opening of U-shaped end is provided through loose slot 311 and the fixed bar 312 fixed with U-shaped dual-side respectively, during installation, the U-shaped end of pull bar 310 is extend into the position of loose slot 311 respectively by the dual-side of blade 316, be limited in loose slot 311 by fixed bar 312 again, the shape of pull bar 310 can be the shape adapted with blade 316 torsion resistance, can more be adjacent to blade 316 like this, form better chucking power.The mode of employing activity installs blade 316, need swingle 303 after rotating forward a period of time, a few circle of corresponding reversion, under the drive of swingle 303, original position is got back to make blade, the rotation of swingle 303 can make all blades 316 under effect of inertia, be positioned at the rear end of chute 307, if wherein certain blade 316 by crystallization and freezing in original place, also can pulling and getting back to rear end under promoting at other blade, avoid crystallization and adhere to the problem that cannot depart from, equally when swingle 303 can make all blades get back to the other end when reversing, thoroughly can dispose the crystal in pyrolysis chamber by the way, as shown in Figure 1, for said structure, connect brilliant mouth 5 and can arrange one respectively at the two ends of swingle 303, crystallization can both be released during such swingle 303 rotating.
As shown in Figure 4, Leaf 316 of the present invention can adopt with the mounting means of swingle 303 and arrange the large insert port of opening 308 in one end of chute 307, the clamping chute 304 of blade 316 is inserted after in chute 307 by insert port 308, recycles corresponding shrouding 309 and by bolt, insert port 308 is closed.Concrete shrouding 309 can be the movable door structure that a side axle is connected on swingle, also can be the structure that four limits are fixed by screws on swingle.In addition owing to being provided with guide rod 310 between each blade 316 and installing for movable, and guide rod 310 can the final distance and position of limit blade 316, therefore also can not install shrouding and directly utilize guide rod to carry out limit blade to shift out by chute.The movement affecting blade is entered in chute in order to prevent crystal, the length of Leaf 316 of the present invention is less than the length of chute 307, top gripper edge 305 length of clamp groove 304 is greater than bottom gripper edge 306 length of clamp groove 304, and the chute 307 exposed covers by the top gripper edge 305 grown when blade 316 is positioned at chute 307 one end.Make blade when mobile by said structure, the opening of chute 307 can block by the top gripper edge 305 of clamp groove 304 always, foreign material are avoided to fall in chute, top gripper edge 305 length between adjacent blades is independent of each other, and namely the interval of each chute 307 needs the top gripper edge length sum being more than or equal to two blades.
For understanding the state of pyrolysis chamber at any time to determine clearance time, the sidewall of pyrolysis chamber 1 of the present invention is provided with transparent windows.Corresponding weight induction device can be set in the bottom of tail pipe in addition, send corresponding alarm by the change of crystal weight.
As shown in Figure 6, for controlling the movement of blade further, the present invention arranges spring 314 at the one or both ends place of swingle 303, one end of spring 314 is fixed on the other end on swingle 303 and is separately fixed on adjacent blade 316, blades 316 all like this can be limited on the centre position of each chute 307 by the spring 314 at two ends in normal state, the position of two springs 314 is oppositely arranged on swingle 303, namely both lay respectively on the relative position of swingle 180 degree, pyrolysis chamber 1 inwall at swingle 303 two ends arranges two and fixing driving levers 315 that position corresponding crossing with spring 314 swing-around trajectory, when swingle 303 rotates, spring 314 is with swingle 303 synchronous rotary, when spring 314 rotates to the position of driving lever 315, stopped by driving lever 315, under elastic force effect, the spring 314 of this end can pull all blades 316 to this end motion, when swingle 303 leaves the position of driving lever, the interception that spring 314 departs from driving lever 315 is returned to original position, now all blades can be withdrawn into original position by the spring 314 of the other end, when the spring 314 of the other end to rotate with swingle 303 and stopped by driving lever, blades all equally can be pulled to this end by it, be returned to original position again, the driving lever at swingle 303 operationally two ends can the tackling corresponding spring of interval, thus all blades are constantly moved back and forth, the activity of blade can be realized in this way, crystal is avoided to be attached on blade.
In the present invention, above-mentioned driving lever 315 only can be arranged on one end, also at one end can arrange multiple driving lever angularly distributed simultaneously, realizes repeatedly stirring.Concrete driving lever can also be arranged to manner, control driving lever by the drive unit being arranged on outside, pyrolysis chamber to stretch, be positioned at when driving lever reaches front end on the swing-around trajectory of spring, it is then non-intersect with spring when driving lever is reduced to rear end, what control blade in this way stirs number of times, that can reduce spring when not needing blade to move stirs number of times, improves the service life of spring simultaneously.
For further facilitating the movement of blade in chute, the present invention arranges ball in blade bottom or chute, reduces the friction between blade and chute, make blade be easier to loosening solidification and crystallization thing by the mode of rolling.
For reducing blade to the impact of flow of flue gas in tail pipe, blade of the present invention adopts the structure of band through hole, and the setting of concrete through hole can be arbitrary flower strand shape, as long as can make the intensity that blade keeps certain.The above is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention with preferred embodiment openly as above, but and be not used to limit the present invention, any technical staff being familiar with this patent is not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned prompting can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of the present invention program.
Claims (8)
1. the ash slag cleaning device of a flue gas SCR urea denitration device, comprise the pyrolysis chamber (1) that reaction compartment is provided for dissolving rear urea and flue gas, it is characterized in that, described ash slag cleaning device (3) comprises the swingle (303) being arranged on pyrolysis chamber's inner bottom part and the spiral vane (302) be arranged on swingle (303), be arranged on connecing brilliant mouth (5) and being connected to the storage case (4) connect outside brilliant mouth below swingle on pyrolysis locular wall, the two end axles of described swingle (303) is fixed on the sidewall of pyrolysis chamber (1) tail pipe (2), the drive motors (301) driving swingle (303) to work is installed in the outside of pyrolysis chamber,
Described spiral vane (302) is made up of multiple independently blade (316) and is provided with interval between each blade (316);
Described blade (316) is for being movably arranged on swingle (303), wherein above the little chute (307) of the inner big uncork of multistage is set by the swing-around trajectory of spiral vane (302) at swingle (303), the two bottom sides of blade (316) is respectively arranged with the clamp groove (304) of clamping chute (307) dual-side
The length of blade (316) is less than the length of chute (307), blade (316) is stuck in chute (307) by clamp groove (304) and is above arranged on swingle (303), blade (316) is provided with fixing hole (313) and loose slot (311), fix a pull bar (310) at the upper pin of fixing hole (313), the other end of pull bar (310) is movably fixed in the loose slot (311) of adjacent blades (316).
2. ash slag cleaning device as claimed in claim 1, is characterized in that, described in meet brilliant mouth (5) place and be provided with movable sealing plate (501).
3. ash slag cleaning device as claimed in claim 1, it is characterized in that, it is U-shaped end that described pull bar (310) is connected one end with loose slot (311), the opening of U-shaped end is provided through loose slot (311) and the fixed bar (312) fixed with U-shaped dual-side respectively.
4. ash slag cleaning device as claimed in claim 3, it is characterized in that, one end of described chute (307) is provided with the insert port (308) of the clamp groove (304) insertion chute (307) for blade, insert port (308) is provided with shrouding (309), and described shrouding (309) is fixed in insert port (308) by axle or screw.
5. ash slag cleaning device as claimed in claim 4, it is characterized in that, the length of described blade (316) is less than the length of chute (307), top gripper edge (305) length of clamp groove (304) is greater than bottom gripper edge (306) length of clamp groove (304), and the chute exposed (307) covers by the top gripper edge (305) grown when blade (316) is positioned at chute (307) one end.
6. ash slag cleaning device as claimed in claim 5, it is characterized in that, the length of described loose slot (311) equals the length that chute (307) deducts blade (316).
7. ash slag cleaning device as claimed in claim 1, it is characterized in that, the termination of described swingle (303) is provided with spring (314), one end of described spring (314) is connected the other end with swingle (303) and is connected with adjacent blade (316), and pyrolysis chamber's inwall that swingle termination is corresponding is provided with the driving lever (315) crossing with spring (314) swing-around trajectory.
8. ash slag cleaning device as claimed in claim 7, is characterized in that, in described chute (307) or the bottom of blade (316) is provided with ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310398125.XA CN103464431B (en) | 2013-09-04 | 2013-09-04 | Deashing device of smoke SCR urea denitration equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310398125.XA CN103464431B (en) | 2013-09-04 | 2013-09-04 | Deashing device of smoke SCR urea denitration equipment |
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| CN103464431A CN103464431A (en) | 2013-12-25 |
| CN103464431B true CN103464431B (en) | 2015-05-13 |
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| CN201310398125.XA Active CN103464431B (en) | 2013-09-04 | 2013-09-04 | Deashing device of smoke SCR urea denitration equipment |
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| CN109279624A (en) * | 2018-10-23 | 2019-01-29 | 国运科技（大连）有限公司 | A kind of SCR denitration urea pyrolysis furnace |
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| CN2542662Y (en) * | 2002-05-17 | 2003-04-02 | 丁清云 | Pyrolyzer for preparing fuel by pyrolyzing waste rubber |
| CN2643975Y (en) * | 2003-10-01 | 2004-09-29 | 王建忠 | Traditional Chinese medicine filtering machine |
| CN2933540Y (en) * | 2006-08-07 | 2007-08-15 | 刘国强 | Spiral dynamic spray dust remover |
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