CN211936372U - Dry SNCR denitration system - Google Patents
Dry SNCR denitration system Download PDFInfo
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- CN211936372U CN211936372U CN202020330198.0U CN202020330198U CN211936372U CN 211936372 U CN211936372 U CN 211936372U CN 202020330198 U CN202020330198 U CN 202020330198U CN 211936372 U CN211936372 U CN 211936372U
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- 230000007246 mechanism Effects 0.000 claims abstract description 76
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003546 flue gas Substances 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 19
- 238000003860 storage Methods 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 15
- 239000000428 dust Substances 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 25
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 12
- 239000003795 chemical substances by application Substances 0.000 abstract description 11
- 229910021529 ammonia Inorganic materials 0.000 abstract description 6
- 238000010531 catalytic reduction reaction Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 239000003814 drug Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 5
- 239000004202 carbamide Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- -1 Na and K Chemical class 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008689 wuhua Substances 0.000 description 1
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Abstract
The utility model discloses a dry SNCR (selective non-catalytic reduction) denitration system, which comprises a feeding mechanism, a storage bin, a discharging mechanism and an online monitoring mechanism, wherein the feeding mechanism conveys a mixture to the storage bin; the storage bin is used for storing a reducing agent mixture; the blanking mechanism is used for conveying the reducing agent mixture in the storage bin to the boiler to reduce the flue gas; the on-line monitoring mechanism is used for monitoring the temperature of the flue gas reaction area; the feeding mechanism, the stock bin, the discharging mechanism and the online monitoring mechanism are all connected with the control mechanism. The utility model realizes high efficiency, low comprehensive cost, easy operation, no secondary pollution and national ultra-low emissionThe method has simple operation and stable operation, ensures higher denitration efficiency under the condition of not generating serious ammonia escape, and reduces the NOx to 100mg/Nm3The cost of the denitration agent can be reduced at the same time as follows.
Description
Technical Field
The utility model relates to a dry method SNCR deNOx systems.
Background
At present, the emission modes for reducing the smoke mainly comprise two modes: selective non-catalytic reduction (SNCR) process. The SNCR technique is a relatively mature technique. The method is characterized in that a reducing agent, generally ammonia or urea, is sprayed into flue gas at 860-1050 ℃ to be reduced to generate nitrogen and water. The principle is that the selective reduction reaction of ammonia and NOx is driven by high temperature, so that the denitration efficiency is obviously lower than that of SCR. This is the lowest cost method currently using chemicals for denitration. However, the current situation is that for other combustion conditions except a circulating fluidized bed furnace, the SNCR can not meet the emission requirement that NOx is lower than 100mg/Nm3 basically, and a denitration agent such as ammonia water or urea solution is sprayed into flue gas in a large amount by an SNCR method, so that a serious ammonia escape problem can be caused; selective Catalytic Reduction (SCR) process. The SNCR denitration efficiency can only reach 50% -60% generally, and the SCR denitration efficiency is very high and can reach more than 90%, but the catalyst cost is higher. From technical characteristics, the most typical SCR catalyst in the denitration application field is V2O5-WO3/TiO 2. The catalyst is more mature than other SCR catalyst system processes. However, in the denitration process, alkali metals such As Na and K, alkaline earth metals such As Ca, heavy metals such As and Hg, and reaction atmospheres such As SO2 and H2O in the coal-fired flue gas all cause catalyst poisoning, and the denitration efficiency is seriously affected. This is the technical bottleneck of the common nature of the current SCR. Due to catalyst poisoning deactivation, the SCR catalyst needs to be replaced periodically, which increases the maintenance cost of denitration. And typically replacing the SCR catalyst means shutting down the furnace.
At present, SNCR is adopted singly in the industry for denitration. There is also a higher investment in the combination of the SNCR and SCR units. Based on the low cost characteristic of SNCR, the combination of SNCR and a low-nitrogen burner, the combination of SNCR and a reburning technology, the combination of SNCR and a plasma technology, and the combination of SNCR and an electron beam irradiation technology (yellow xia, Liuhui, Wuhua, selective non-catalytic reduction (SNCR) technology and application prospect thereof, power station system engineering, 2008, 24(1):12-14) are provided. Therefore, finding out a combined process based on SNCR and other technical schemes with better effect and low cost is a key exploratory subject in the field. Dry denitration is to spray powder or granular denitration agent into flue gas in a higher temperature range, for example: the temperature is 750-970 ℃, and the nitrogen oxides are reduced to further achieve the aim of denitration. The active ammonia source adopted by the dry denitration is provided by the nitrogen-containing substances such as urea, melamine and the like in the powder denitration agent. There is utility model people to propose the technological scheme with dry process denitration and SCR combination, and the core of dry process denitration and SCR combination technology is: and the maintenance cost of the SCR is reduced to a certain extent. However, the introduction of SCR inevitably leads to excessive one-time investment, and the SCR catalyst is inactivated in the application process, so that the cost is high. In the patent application with the utility model patent application number of CN 201711264257.8, a flue gas dry denitration method for an aluminum hydroxide roasting furnace is disclosed, which relates to the improvement of an aluminum hydroxide roasting method in the production process of aluminum oxide. The method is characterized in that a denitration agent is sprayed into an aluminum hydroxide roasting furnace in the denitration process, and the denitration agent pyrolysis product and NOx in the flue gas are subjected to reduction reaction to reduce harmful gas NOx into harmless N2. The utility model discloses an utilize compressed air to go into the roasting furnace with high-efficient dry process reduction denitration agent direct injection and mix reaction with the flue gas, make aluminium hydroxide roast burning furnace flue gas NOx concentration and realize discharge to reach standard. However, the method for denitration by the flue gas dry method of the aluminum hydroxide roasting furnace disclosed above has high use cost of the denitration agent.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a dry method SNCR deNOx systems to reach efficient, comprehensive cost low, easy operation, no secondary pollution, satisfy the national minimum emission, its easy operation, the operation is stable, under the condition that does not produce serious ammonia escape, guarantees higher ground denitration efficiency, falls to NOx 100mg Nm3The cost of the denitration agent can be reduced at the same time as follows.
In order to solve the technical problem, the utility model comprises a feeding mechanism, a stock bin, a discharging mechanism and an online monitoring mechanism;
the feeding mechanism is used for conveying the reducing agent mixture to a storage bin;
the storage bin is used for storing a reducing agent mixture;
the blanking mechanism is used for conveying the reducing agent mixture in the storage bin to the boiler to reduce the flue gas;
the on-line monitoring mechanism is used for monitoring the temperature of the flue gas reaction area;
the feeding mechanism, the storage bin, the discharging mechanism and the online monitoring mechanism are all connected with the control mechanism, a, when the temperature of the flue gas reaction area is within a normal reaction temperature range, the discharging mechanism normally operates, b, when the temperature of the flue gas reaction area is outside the normal reaction temperature range, the control mechanism receives a signal generated by the online detection mechanism and sends out a signal for controlling the discharging mechanism to increase or reduce the conveying capacity of the reducing agent mixture, and therefore the reaction intensity within the normal reaction temperature range is increased or reduced.
The feeding mechanism comprises a feeding machine, the feeding machine is an auger feeding machine, the discharge end of the auger feeding machine is arranged above the feed end of the storage bin, a power motor of the auger feeding machine is connected with the control mechanism, and the feed end of the feeding machine is provided with a feed hopper.
The upper portion of feeder hopper is equipped with dust absorption part, dust absorption part includes suction hood and air compressor machine, the suction hood with communicate through the dust absorption pipe between the air compressor machine, power part on the air compressor machine with control mechanism connects.
The feed bin includes the storehouse body, is equipped with the sight glass on the lateral wall of the storehouse body, and the middle part cartridge of the storehouse body has the charge level indicator, be equipped with the agitator that sets up from top to bottom on the storehouse body, the agitator is equipped with stirred tank including locating the agitator motor on storehouse body upper portion and the (mixing) shaft of deepening internal portion in storehouse, and stirred tank's below is equipped with shakes and beats the motor, and agitator motor and charge level indicator all are connected with control mechanism.
Unloading mechanism is including locating the glassware below the feed bin, the feed end of glassware down with the discharge end of feed bin passes through the pipeline intercommunication, the discharge end of glassware down communicates through the pipeline on the fan, the fan passes through ejection of compact pipeline and feed bin intercommunication, be equipped with crushing unit on the ejection of compact pipeline, extend to the ejection of compact pipeline of feed bin the tip with the feed bin intercommunication.
The discharging pipeline is connected with a plurality of discharging ends in parallel, and the discharging ends are arranged on the side wall of the storage bin at intervals.
The blower is a Roots blower.
The on-line monitoring mechanism comprises a sensor and a signal receiver which are arranged on the boiler smoke exhaust channel, and the signal receiver is connected with the control mechanism.
The control mechanism comprises a control cabinet and a monitoring computer.
The reducing agent mixture is an efficient denitrifying agent, and the main components comprise 10-20 parts of carbon powder, 80-90 parts of urea, 1-5 parts of calcium powder and other components.
To sum up, the utility model discloses simple process, easily automated control can be according to NOXAutomatic adjustment is realized, and unattended operation is realized; the construction of the dry SNCR denitration system is one-time investment and low in cost; the equipment of the dry SNCR denitration system occupies a small area and has short construction time; the whole reduction process of the dry SNCR process is carried out in the boiler, the denitration efficiency is high and can reach 80-95% under normal conditions; the dry SNCR technology does not need to greatly change combustion equipment and a heating surface of the boiler, does not need to change the conventional operation mode of the boiler, and has little influence on main operation parameters of the boiler.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of the present invention;
in the figure: 1-feeding mechanism, 2-blanking mechanism, 3-stock bin, 4-online monitoring mechanism, 5-feeding machine, 6-feed hopper, 7-suction hood, 8-air compressor, 9-dust suction pipe, 10-bin body, 11-sight glass, 12-level gauge, 13-stirrer, 14-rapping motor, 15-blanking device, 16-Roots blower, 17-crushing component, 18-sensor and 19-control cabinet.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the following embodiments. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Referring to fig. 1, the utility model discloses a feed mechanism 1, feed bin 3, unloading mechanism 2 and on-line monitoring mechanism 4.
The feeding mechanism 1 is used for conveying a reducing agent mixture to a storage bin 3; feed mechanism 1 includes material loading machine 5, material loading machine 5 can be auger material loading machine 5 and belt conveyor, and in this embodiment, material loading machine 5 adopts auger material loading machine, the top of the feed end of feed bin 3 is located to the discharge end of auger material loading machine, the power motor and the control mechanism of auger material loading machine are connected, the feed end of material loading machine 5 is equipped with feeder hopper 6. The upper portion of feeder hopper 6 is equipped with dust absorption part, dust absorption part includes suction hood 7 and air compressor machine 8, and suction hood 7 is in the top of feeder hopper 6, suction hood 7 with communicate through dust absorption pipe 9 between the air compressor machine 8, power component on the air compressor machine 8 with control mechanism connects. The dust absorption part can absorb dust, and the harm of the dust to the environment and a human body is avoided.
Referring to fig. 1, a bin 3 is used to store a reducing agent mixture; feed bin 3 is equipped with sight glass 11 including the storehouse body 10 on the lateral wall of the storehouse body 10, and the middle part cartridge of the storehouse body 10 has charge level indicator 12, and charge level indicator 12 can monitor the medicament quantity, and control interpolation medicament, be equipped with the agitator 13 that sets up from top to bottom on the storehouse body 10, agitator 13 is equipped with stirred tank on the (mixing) shaft of the internal portion of deep storehouse including the agitator motor who locates storehouse body 10 upper portion and the (mixing) shaft of deep storehouse, and stirred tank's below is equipped with shakes and beats motor 14, and agitator motor and charge level indicator 12 all are connected with control mechanism. The stirrer 13 and the rapping motor 14 can prevent the hardening of the medicament and ensure the stable blanking.
Referring to fig. 1, a blanking mechanism 2 is used for conveying the reducing agent mixture in a storage bin 3 to a boiler to reduce the flue gas; unloading mechanism 2 is including locating unloading ware 15 of 3 below of feed bin, the feed end of unloading ware 15 with the discharge end of feed bin 3 passes through the pipeline intercommunication, the discharge end of unloading ware 15 communicates through the pipeline on the fan, the fan passes through discharge pipeline and feed bin 3 intercommunication, be equipped with crushing unit 17 on the discharge pipeline, the medicament is before getting into furnace, is smashed by reducing mechanism, improves the reaction efficiency of medicament in furnace, extend to the discharge pipeline's of feed bin 3 tip with feed bin 3 intercommunication. The ejection of compact pipeline is parallelly connected to have a plurality of discharge ends, the discharge end interval set up in on the lateral wall of feed bin 3, the discharge end adopts high temperature resistant spray gun, and the temperature resistant temperature of the material that the spray gun used is up to more than 1200 ℃, according to furnace flue gas flow direction and temperature, arranges the mode of spray gun position and adjustment every spray gun. The fan is roots's fan 16, and roots's fan 16 uses the converter to adjust to satisfy under each load condition of boiler, to the regulation demand of medicament, amount of wind, wind pressure, in order to realize accurate unloading, reduce running cost, the energy saving.
Referring to fig. 1, the on-line monitoring mechanism 4 is used for monitoring the temperature of the flue gas reaction zone; the on-line monitoring mechanism 4 comprises a sensor 18 and a signal receiver which are arranged on the boiler smoke exhaust channel, the signal receiver is connected with the control mechanism, the sensor 18 is a temperature sensor, namely, the temperature of different areas of the boiler is collected, so that the subsequent control mechanism can conveniently control the amount of reducing agent mixture sprayed by the spray gun, the reducing agent mixture is a high-efficiency denitration agent, and the main components of the reducing agent mixture comprise 10-20 parts of carbon powder, 80-90 parts of urea, 1-5 parts of calcium powder and other components.
Referring to fig. 1, the control mechanism includes a control cabinet 19 and a supervisory computer, where the control cabinet 19 is a PLC control cabinet 19, model number dating dart-5112.
When the utility model is used, when the temperature of the flue gas reaction zone is in the normal reaction temperature range, the blanking mechanism 2 normally operates; when the temperature of the flue gas reaction zone is outside the normal reaction temperature range, the control mechanism receives the signal generated by the online detection mechanism and sends out a signal for controlling the blanking mechanism 2 to increase or decrease the conveying amount of the reducing agent mixture, so that the reaction intensity in the normal reaction temperature range is increased or decreased.
The utility model discloses simple process, easily automated control can be according to NOXAutomatic adjustment is realized, and unattended operation is realized; the construction of the dry SNCR denitration system is one-time investment and low in cost; the equipment of the dry SNCR denitration system occupies a small area and has short construction time; the whole reduction process of the dry SNCR process is carried out in the boiler, the denitration efficiency is high and can reach 80-95% under normal conditions; the dry SNCR technology does not need to greatly change combustion equipment and a heating surface of the boiler, does not need to change the conventional operation mode of the boiler, and has little influence on main operation parameters of the boiler.
In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (9)
1. A dry SNCR denitration system is characterized in that: comprises a feeding mechanism (1), a storage bin (3), a discharging mechanism (2) and an online monitoring mechanism (4);
the feeding mechanism (1) is used for conveying the reducing agent mixture to the storage bin (3);
the storage bin (3) is used for storing a reducing agent mixture;
the blanking mechanism (2) is used for conveying the reducing agent mixture in the storage bin (3) to the boiler to reduce the smoke;
the online monitoring mechanism (4) is used for monitoring the temperature of the flue gas reaction zone;
feed mechanism (1), feed bin (3), unloading mechanism (2) and on-line monitoring mechanism (4) all are connected with control mechanism, a, when the temperature in flue gas reaction zone is between normal reaction temperature, unloading mechanism (2) normal operating, b, when the temperature in flue gas reaction zone is outside normal reaction temperature interval, control mechanism receives the signal that on-line monitoring mechanism produced and sends control unloading mechanism (2) increase or reduce the conveying capacity of reductant mixture, thereby increase or reduce the reaction intensity in normal reaction temperature interval.
2. The dry SNCR denitration system of claim 1, wherein: feed mechanism (1) includes material loading machine (5), material loading machine (5) are the auger material loading machine, the top of the feed end of feed bin (3) is located to the discharge end of auger material loading machine, the motor power of auger material loading machine is connected with control mechanism, the feed end of material loading machine (5) is equipped with feeder hopper (6).
3. The dry SNCR denitration system of claim 2, wherein: the upper portion of feeder hopper (6) is equipped with dust absorption part, dust absorption part includes suction hood (7) and air compressor machine (8), suction hood (7) with communicate through dust absorption pipe (9) between air compressor machine (8), power part on air compressor machine (8) with control mechanism connects.
4. The dry SNCR denitration system of claim 1, wherein: feed bin (3) are equipped with sight glass (11) including the storehouse body (10) on the lateral wall of the storehouse body (10), and the middle part cartridge of the storehouse body (10) has charge level indicator (12), be equipped with agitator (13) that from the top down set up on the storehouse body (10), agitator (13) including locating the agitator motor on the upper portion of the storehouse body (10) and deep into the inside (mixing) shaft of the storehouse body (10), be equipped with stirred tank on the (mixing) shaft of deep into the inside of the storehouse body (10), stirred tank's below is equipped with shakes and beats motor (14), and agitator motor and charge level indicator (12) all are connected with control.
5. The dry SNCR denitration system of claim 1, wherein: unloading mechanism (2) is including locating lower glassware (15) of feed bin (3) below, the feed end of lower glassware (15) with the discharge end of feed bin (3) passes through the pipeline intercommunication, the discharge end of lower glassware (15) communicates on the fan through the pipeline, the fan passes through ejection of compact pipeline and feed bin (3) intercommunication, be equipped with crushing unit (17) on the ejection of compact pipeline, extend to the ejection of compact pipeline's of feed bin (3) tip with feed bin (3) intercommunication.
6. The dry SNCR denitration system of claim 5, wherein: the discharging pipeline is connected with a plurality of discharging ends in parallel, and the discharging ends are arranged on the side wall of the storage bin (3) at intervals.
7. The dry SNCR denitration system of claim 5, wherein: the blower is a Roots blower (16).
8. The dry SNCR denitration system of claim 1, wherein: the on-line monitoring mechanism (4) comprises a sensor (18) and a signal receiver which are arranged on a smoke exhaust channel of the boiler, and the signal receiver is connected with the control mechanism.
9. The dry SNCR denitration system of claim 1, wherein: the control mechanism comprises a control cabinet (19) and a monitoring computer.
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|---|---|---|---|
| CN202020330198.0U CN211936372U (en) | 2020-03-17 | 2020-03-17 | Dry SNCR denitration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020330198.0U CN211936372U (en) | 2020-03-17 | 2020-03-17 | Dry SNCR denitration system |
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| CN211936372U true CN211936372U (en) | 2020-11-17 |
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Granted publication date: 20201117 |