CN205627607U - Modified SNCR denitrification facility of medium temperature high efficiency of gratefiring boiler - Google Patents
Modified SNCR denitrification facility of medium temperature high efficiency of gratefiring boiler Download PDFInfo
- Publication number
- CN205627607U CN205627607U CN201620330008.9U CN201620330008U CN205627607U CN 205627607 U CN205627607 U CN 205627607U CN 201620330008 U CN201620330008 U CN 201620330008U CN 205627607 U CN205627607 U CN 205627607U
- Authority
- CN
- China
- Prior art keywords
- modified
- boiler
- storage tank
- temperature high
- organic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a modified SNCR denitrification facility of medium temperature high efficiency of gratefiring boiler belongs to coal fired boiler pollutant control technical field, and urea produces amino and imino group free radical under the synergism of H2O2 and organic acid (formic acid, acetic acid or propionic acid), because of amino free radical NH2 or imino group free radical NH have higher reactivity and selectivity to nitrogen oxide, but the temperature window that greatly reduced SNCR reacts, simultaneously modified reductant atomizing nozzle is located gratefiring boiler furnace outlet and turns to the room, and this region helps modified reductant and nitrogen oxide intensive mixing, has improved ureal utilization ratio, the utility model discloses economic environmental protection, easy to carry out, denitration efficiency is high, except that the gratefiring boiler, also is adapted to coal -fired power plant and other coal -fired industrial process, has extensive application prospect and market spreading value.
Description
Technical field
This utility model relates to grate firing coal-burning boiler and controls discharged nitrous oxides technical field, is specifically related to one
The middle temperature high effective and modified SNCR denitration device of grate firing boiler.
Background technology
Chinese industrial boiler plays an important role in national economy and social development, is widely used in smelting
The fields such as gold, building and heating, coking and chemical industry.At home under the promotion of market solid demand, China's industry
Boiler industry entirety is maintained steady and rapid growth.It is 55.81 ten thousand steamings by industrial boilers in China yield in 2014
Send out amount ton, increase by 8.9% compared with last year mutually.China is the country with coal as main energy sources, takes as the leading factor with fire coal
Industrial Boiler account for more than the 65% of boiler total amount, still can occupy relatively in the market of following coal-burned industrial boiler
High specific gravity.At present, in general, Industrial Boiler energy resource consumption and disposal of pollutants all occupy whole nation industry row
Industry second, is only second to station boiler, and coal consumption amount is far above the highly energy-consuming industrial trade such as iron and steel, petrochemical industry.
But the tradition coal-burning boiler thermal efficiency is low, seriously polluted, according to statistics, the accumulative row of coal-burned industrial boiler in 2012
Put flue dust about 4,100,000 tons, SO2About 5,700,000 tons, NOXAbout 2,000,000 tons, account for whole nation total emission volumn respectively
32%, 26% and about 15%, it is the one of the main reasons causing haze weather.SNCR
(Selective Non-catalytic Reduction, SNCR) is a kind of conventional low cost gas denitrifying technology,
Investment and operating cost are relatively low, and newly-built or transformation Industrial Boiler are respectively provided with wide applicability.But
There is temperature window requirement too high (900-1100 DEG C), reducing agent ammonia used or carbamide in conventional SNCR technology
Can only spray into narrow some position of rear arch, ammonia or carbamide gasification are difficult to penetrate after decomposing front and back encircles height at narrow point in the past
The flue gas of speed ascension, mixability is the highest, causes reducing agent utilization rate low, to improve denitration efficiency,
Must spray into excess of ammonia water or carbamide reducing agent, produce serious the escaping of ammonia, escape ammonia is secondary haze
Arch-criminal, the especially grate firing boiler to city operations, the escaping of ammonia will increase the weight of haze and spread.For thoroughly solving grate firing
Boiler nitrogen oxides pollution thing control problem, finds SNCR method and the work of a kind of high-efficiency environment friendly and economy
Skill is extremely urgent.
Summary of the invention
Exist when grate firing boiler is implemented for conventional SNCR denitration technology and affect boiler operating efficiency, temperature
The problems such as window requires too high and denitration efficiency unstable, the purpose of this utility model is to propose a kind of layer
The middle temperature high effective and modified SNCR denitration device of combusting boiler, this utility model selection carbamide serves as denitrification reducing agent,
By adding certain density additive solution (H in urea liquid2O2Mixed solution with organic acid) right
Denitrification reducing agent is modified, and significantly reduces conventional SNCR method while improving SNCR denitration efficiency
Required too high running temperature, the method not only meets grate firing boiler energy-saving and emission-reduction demand, and high-efficiency environment friendly,
It is easily installed, at utmost avoids the secondary pollutions such as the escaping of ammonia.
In order to achieve the above object, technical solution adopted in the utility model is as follows:
The middle temperature high effective and modified SNCR denitration device of a kind of grate firing boiler, prepares including denitrification reducing agent and deposits
Storage system, additive preparation system, spraying system, NOXOn-line measuring device and denitrfying agent flow are controlled in real time
System processed；The storage of described denitrification reducing agent includes solid urea storage silo 4 with preparation system, passes through helical feed
The dosing that machine 5 connects with solid urea storage silo 4 fills 6, and it is pre-with liquid by a delivery pump 9 that dosing fills 6
1. number injection port connection of mixing device 16, is arranged on the pipelines that a delivery pump 9 connects with dosing filling 6
There is an effusion meter 8；Described additive preparation system includes H2O2Storage tank 10, H2O2Storage tank 10 leads to
Cross No. two delivery pumps 12 to connect with a 2. number injection port for liquid pre-mixing apparatus 16, No. two delivery pumps 12 with
H2O2It is provided with No. two effusion meters 11 on the pipeline of storage tank 10, also includes organic acid storage tank 13, organic
Acid storage tank 13 is connected, three with a 3. number injection port for liquid pre-mixing apparatus 16 by No. three delivery pumps 15
It is provided with No. three effusion meters 14 on number pipeline that delivery pump 15 connects with organic acid storage tank 13；Described injection
System includes the force (forcing) pump 17 that 4. number outlet is connected with liquid pre-mixing apparatus 16, is connected with force (forcing) pump 17
Ammonia-spraying grid 2, the atomizer 3 being arranged on ammonia-spraying grid 2, Modified Urea solution by atomizer 3 with
Atomised form sprays into furnace outlet and participates in denitration reaction；Described NOXOn-line measuring device includes being placed on burner hearth
Outlet, the monitoring NO of spraying system front endXThe smoke sampling rifle 1 and NO of concentrationXOn-line measurement instrument 18,
With NOXThe data handling system 19 that on-line measurement instrument 18 connects；Described denitrfying agent flow controls in real time
System is denitrfying agent flow control system 20, and data handling system 19 is by NOXConcentration measurement feeds back in time
To denitrfying agent flow control system 20, regulate No. one in real time according to feedback result denitrfying agent flow control system 20
Effusion meter 11, No. three effusion meters 14 of 8, No. two effusion meters and the flow of supply unit thereof.
The position distribution of described atomizer 3 is at the grate firing boiler furnace outlet of 550-650 DEG C, and this position is in
Burner hearth reversal chamber.This region flue gas disturbance is strong, it is simple to atomized drop is sufficiently mixed with flue gas, extends reduction
The time of staying of agent.
Described atomizer 3 is arranged as one or more layers.
The H of described additive preparation system2O2Conveyance conduit, atomizer 3 inner surface of spraying system, stove
Thorax reversal chamber and furnace outlet coating high-temperature ammonolysis boron coating, it is therefore an objective to reduce H2O2Linear loss, simultaneously
Extend the life-span of hydroxyl radical free radical.
The method of denitration of the middle temperature high effective and modified SNCR denitration device of grate firing boiler described above, its step bag
Include:
1) in the storage of described denitrification reducing agent and preparation system, the urea granules in solid urea storage silo 4
Mixing with deionized water in conveying worm 5 is delivered to dosing filling 6, dissolved dilution becomes the urine of preset concentration
Cellulose solution, it is pre-that urea liquid is delivered to liquid through an effusion meter 8 and delivery pump 9 from a 1. number injection port
In mixing device 16 standby；
2) in described additive preparation system, H2O2H in storage tank 102O2Solution is through No. two effusion meters
11, No. two delivery pumps 12 are from 2. number injection port enters liquid pre-mixing apparatus 16, and meanwhile, organic acid stores
Organic acid soln in tank 13 enters liquid through 14, No. three delivery pumps 15 of No. three effusion meters from 3. number injection port
In pre-mixing apparatus 16, H2O2Solution and organic acid soln mix generation modification as additive with urea liquid and urinate
Cellulose solution；
3) at described NOXIn on-line measuring device, smoke sampling rifle 1 and NOXOn-line measurement instrument 18 is surveyed
The NO obtainedXConcentration on-line normalization is to data handling system 19, and data handling system 19 is by NOXMeasurement result
Feed back to denitrfying agent flow control system 20 in time, real-time according to feedback result denitrfying agent flow control system 20
Regulate an effusion meter 11, No. three effusion meters 14 of 8, No. two effusion meters and the flow of supply unit thereof；
4) in described spraying system, Modified Urea solution is defeated from the 4. number outlet of liquid pre-mixing apparatus 16
Go out pressurized pump 17 to pressurize, flow through ammonia-spraying grid 2, atomizer 3 spray into furnace outlet with atomised form
Participate in denitration reaction；Atomized particle size is 100-180um.
The concentration of described urea liquid is 25%～60%, and the straying quatity of Modified Urea solution is according to nitrogen in carbamide
Element and NO in flue gasXThe ratio of amount of material be that 2-2.5:1 is controlled.
Described H2O2Solution concentration is 30-50%.
Described organic acid soln concentration is 30-40%.
Described organic acid is formic acid solution, acetic acid solution or propionic acid solution.
This utility model reaction principle is as follows:
(1)H2O2Organic peroxide acid (as a example by formic acid), its reaction principle is generated with organic acid reaction
As follows:
CH3CO2H+H2O2→CH3CO3H+H2O
(2)H2O2Self can produce hydroxyl in a heated condition, and its reaction principle is as follows:
H2O2+M→2·OH
·OH+H2O2→·OOH+H2O
·OOH+H2O2→H2O+O2+·OH
(3) ammonia that carbamide decomposes produces is through organic acid and H2O2Solution works in coordination with the hydroxyl free of generation
Base oxidation generates amino radical NH2Or imino group free radical NH, amino and imino group radical pair nitrogen
Oxide has higher selectivity and reactivity, and reaction principle is as follows:
CO(NH2)2→NH3+HNCO
NH3+·OH→·NH2+H2O
·NH2+NO→N2+H2O
·NH2+·OH→·NH+H2O
·NH+NO→N2+·OH
Compared with prior art, this utility model has following remarkable advantages:
(1) method of denitration of this utility model denitrification apparatus is used to utilize H2O2Make with the synergistic oxidation of organic acid
Activate with to carbamide, generate the higher amino of activity and selectivity or the participation denitration of imino group free radical is anti-
Should, significantly reduce denitration reaction temperature, improve denitration reaction efficiency.
(2) the temperature required window of the method for denitration of this utility model denitrification apparatus 550 DEG C-650 DEG C, denitrfying agent sprays
Mouth arranges furnace outlet, does not affect boiler normal combustion, compares conventional SNCR method and significantly improves boiler fortune
Line efficiency
(3) this utility model atomizer is arranged in grate firing coal-burned industrial boiler furnace outlet flue gas reversal chamber,
This zone-perturbation is strong, and beneficially flue gas and reducing agent is sufficiently mixed, and improves ammonia or urea desorption column,
Thus decreasing the escaping of ammonia, these apparatus and method are easy to implement, simple to operate, equal to transformation and newly constructed boiler
Having wide applicability, investment and operating cost are cheap.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of this utility model grate firing coal-burning boiler SNCR system.
Fig. 2 is that smoke sampling rifle, ammonia-spraying grid and the atomizer installation site in grate firing coal-burning boiler is shown
It is intended to.
Fig. 3 is ammonia-spraying grid and atomizing nozzle structure schematic diagram.
Detailed description of the invention
Make the most specifically to describe in detail to this utility model with specific embodiment below in conjunction with the accompanying drawings:
As shown in Figure 1, Figure 2 and Figure 3, the high effective and modified SNCR denitration of middle temperature of this utility model grate firing boiler
Structure and the method for denitration of device are as follows:
Urea storage storehouse 4 is connected with Agitation Tank 6 by conveying worm 5 by pipeline, is equipped with in Agitation Tank 6
There is stirring paddle 7, measured by an effusion meter 8, a delivery pump 9 be delivered to liquid from a 1. number injection port
In body pre-mixing apparatus 15；H2O2H in storage tank 10 and organic acid storage tank 132O2And organic acid soln
It is transported to liquid through No. two delivery pumps 12 and No. three delivery pumps 15 from a 2. and 3. number injection port respectively load in mixture in advance
Put in 16 and mix with urea liquid；Mixed solution in pre-mixing apparatus 16 is pressurized from 4. number outlet output
Pump 17 is participated in denitration reaction by atomizer spray people's furnace outlet reversal chamber.
NOXOn-line checking monitoring device (smoke sampling rifle 1 and NOXOn-line checking instrument 18) burner hearth is gone out
The nitrous oxides concentration of mouth is monitored in real time, and the data that detection obtains feed back to de-through data handling system 19
Nitre agent flux real-time control system 20, denitrfying agent flow real-time control system 20 is according to the nitrogen oxides in flue gas
Concentration regulation carbamide, H2O2Uninterrupted with organic acid soln.
Embodiment 1:
Solid urea particle is stored in urea storage storehouse 4, conveying worm 5 be transported in Agitation Tank 6, uses
Urea granules is dissolved into the urea liquid that concentration is 25%～60% by deionized water；H2O2Solution concentration is
30%, addition presses H2O2The NO obtained with detectionXMol ratio is that 1:1 is determined, organic additive
Choosing formic acid solution, concentration is 20%, carbamide, H2O2With formic acid solution respectively through an effusion meter 8, two
Number effusion meter 12 and No. three effusion meters 14 are by 9, No. two delivery pumps 12 of a delivery pump and No. three delivery pumps 15
Delivering in pre-mixing apparatus 16, the modified solution mixed is pressurizeed through ammonia-spraying grid 2 by being atomized by force (forcing) pump 17
Nozzle 3 sprays into furnace outlet and turns to district to form atomized drop, and wherein nozzle location cigarette temperature is 620 DEG C.In modification
Nitrogen element and NO in urea liquidXOn-line measurement device records the feelings that nitrogen oxides in effluent mol ratio is 2:1
Under condition, it is achieved the denitration efficiency of 78%, the escaping of ammonia is 5ppm.
Embodiment 2:
Solid urea particle is stored in urea storage storehouse 4, conveying worm 5 be transported in Agitation Tank 6, uses
Urea granules is dissolved into the urea liquid that concentration is 25%～60% by deionized water；H2O2 solution concentration is
30%, addition presses H2O2The NO obtained with detectionXMol ratio is that 1:1 is determined, organic additive
Choosing acetic acid solution, concentration is 20%, carbamide, H2O2With acetic acid solution respectively through an effusion meter 8, two
Number effusion meter 12 and No. three effusion meters 14 are by 9, No. two delivery pumps 12 of a delivery pump and No. three delivery pumps 15
Delivering in pre-mixing apparatus 16, the modified solution mixed is pressurizeed through ammonia-spraying grid 2 by being atomized by force (forcing) pump 17
Nozzle 3 sprays into furnace outlet and turns to district to form atomized drop, and wherein nozzle location cigarette temperature is 595 DEG C.In modification
Nitrogen element and NO in urea liquidXOn-line measurement device records the feelings that nitrogen oxides in effluent mol ratio is 2.2:1
Under condition, it is achieved the denitration efficiency of 82%, the escaping of ammonia is 8ppm.
Embodiment 3:
Solid urea particle is stored in urea storage storehouse 4, conveying worm 5 be transported in Agitation Tank 6, uses
Urea granules is dissolved into the urea liquid that concentration is 25%～60% by deionized water；H2O2Solution concentration is
30%, addition presses H2O2The NO obtained with detectionXMol ratio is that 1:1 is determined, organic additive
Choosing propionic acid solution, concentration is 20%, carbamide, H2O2With propionic acid solution respectively through an effusion meter 8, two
Number effusion meter 12 and No. three effusion meters 14 are by 9, No. two delivery pumps 12 of a delivery pump and No. three delivery pumps 15
Delivering in pre-mixing apparatus 16, the modified solution mixed is pressurizeed through ammonia-spraying grid 2 by being atomized by force (forcing) pump 17
Nozzle 3 sprays into furnace outlet and turns to district to form atomized drop, and wherein nozzle location cigarette temperature is 580 DEG C.In modification
Nitrogen element and NO in urea liquidXOn-line checking instrument records the feelings that nitrogen oxides in effluent mol ratio is 2.1:1
Under condition, it is achieved the denitration efficiency of 76%, the escaping of ammonia is 5ppm.
Claims (5)
1. the middle temperature high effective and modified SNCR denitration device of a grate firing boiler, it is characterised in that: include denitration
Reducing agent preparation and storage system, additive preparation system, spraying system, NOXOn-line measuring device is with de-
Nitre agent flux real-time control system；
The storage of described denitrification reducing agent includes solid urea storage silo (4) with preparation system, passes through helical feed
The dosing that machine (5) connects with solid urea storage silo (4) fills (6), and dosing fills (6) by a conveying
Pump (9) connects with a 1. number injection port for liquid pre-mixing apparatus (16), in a delivery pump (9) and dosing
Fill and be provided with an effusion meter (8) on the pipeline that (6) connect；
Described additive preparation system includes H2O2Storage tank (10), H2O2Storage tank (10) passes through No. two
Delivery pump (12) connects with a 2. number injection port for liquid pre-mixing apparatus (16), No. two delivery pumps (12)
With H2O2It is provided with No. two effusion meters (11) on the pipeline of storage tank (10), also includes organic acid storage tank
(13), organic acid storage tank (13) is by No. three delivery pumps (15) with liquid pre-mixing apparatus (16) 3.
The connection of number injection port, setting on the pipeline that No. three delivery pumps (15) connect with organic acid storage tank (13)
There are No. three effusion meters (14)；
Described spraying system includes and liquid pre-mixing apparatus (16) force (forcing) pump (17) that 4. number outlet is connected,
The ammonia-spraying grid (2) being connected with force (forcing) pump (17), the atomizer (3) being arranged on ammonia-spraying grid (2),
Modified Urea solution is sprayed into furnace outlet by atomizer (3) with atomised form and participates in denitration reaction；
Described NOXOn-line measuring device includes the monitoring NO being placed on furnace outlet, spraying system front endXDense
The smoke sampling rifle (1) of degree and NOXOn-line measurement instrument (18), with NOXOn-line measurement instrument (18)
The data handling system (19) connected；
Described denitrfying agent flow real-time control system is denitrfying agent flow control system (20), data handling system
(19) by NOXConcentration measurement feeds back to denitrfying agent flow control system (20) in time, according to feedback knot
Really denitrfying agent flow control system (20) in real time number effusion meter (8) of regulation, No. two effusion meters (11), three
Number effusion meter (14) and the flow of supply unit thereof.
The middle temperature high effective and modified SNCR denitration device of grate firing boiler the most according to claim 1, it is special
Levy and be: the position distribution of described atomizer (3), at the grate firing boiler furnace outlet of 550-650 DEG C, is somebody's turn to do
Position is in burner hearth reversal chamber.
The middle temperature high effective and modified SNCR denitration device of grate firing boiler the most according to claim 1, it is special
Levy and be: described atomizer (3) is arranged as one or more layers.
The middle temperature high effective and modified SNCR denitration device of grate firing boiler the most according to claim 2, it is special
Levy and be: the H of described additive preparation system2O2Conveyance conduit, spraying system atomizer (3) in
Surface, burner hearth reversal chamber and furnace outlet coating high-temperature ammonolysis boron coating.
The middle temperature high effective and modified SNCR denitration device of grate firing boiler the most according to claim 1, it is special
Levy and be: the organic acid in described organic acid storage tank (13) is that formic acid solution, acetic acid solution or propanoic acid are molten
Liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620330008.9U CN205627607U (en) | 2016-04-19 | 2016-04-19 | Modified SNCR denitrification facility of medium temperature high efficiency of gratefiring boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620330008.9U CN205627607U (en) | 2016-04-19 | 2016-04-19 | Modified SNCR denitrification facility of medium temperature high efficiency of gratefiring boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205627607U true CN205627607U (en) | 2016-10-12 |
Family
ID=57062391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620330008.9U Withdrawn - After Issue CN205627607U (en) | 2016-04-19 | 2016-04-19 | Modified SNCR denitrification facility of medium temperature high efficiency of gratefiring boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205627607U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771608A (en) * | 2016-04-19 | 2016-07-20 | 西安交通大学 | Intermediate temperature efficient modified SNCR denitration device of layer-burning boiler and method |
| CN111514716A (en) * | 2020-06-04 | 2020-08-11 | 深圳市爱诺实业有限公司 | Flue gas desulfurization, denitrification and demercuration purification method and equipment |
-
2016
- 2016-04-19 CN CN201620330008.9U patent/CN205627607U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771608A (en) * | 2016-04-19 | 2016-07-20 | 西安交通大学 | Intermediate temperature efficient modified SNCR denitration device of layer-burning boiler and method |
| CN111514716A (en) * | 2020-06-04 | 2020-08-11 | 深圳市爱诺实业有限公司 | Flue gas desulfurization, denitrification and demercuration purification method and equipment |
| CN111514716B (en) * | 2020-06-04 | 2023-10-20 | 深圳市爱诺实业有限公司 | Flue gas desulfurization, denitrification and demercuration purification method and equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202700347U (en) | Smoke selective non-catalytic reduction (SNCR) denitration complete plant | |
| CN203899439U (en) | Novel SNCR (selective non-catalytic reduction) denitration system | |
| CN103691293A (en) | Novel SNCR (selective non-catalytic reduction) and SCR (selective catalytic reduction) hybrid denitrification system | |
| CN102626588B (en) | SNCR (Selective Non Catalytic Reduction) denitrification process and device for flue gas purification of circulating fluidized bed (CFB) | |
| CN204017667U (en) | A kind of Novel SCR denitrating system | |
| CN206935094U (en) | A kind of SNCR equipment for denitrifying flue gas | |
| CN102806002B (en) | SNCR (selective non-catalytic reduction) denitration device and method for rotary cement kiln nitrogen oxide control | |
| CN102989282A (en) | Method and device for collaborative removal of mercury in flue gas | |
| CN104383808A (en) | Process and device for carrying out flue gas denitrification by utilizing solid organic denitrifying agent | |
| CN105457465A (en) | Design method of SNCR-SCR combined flue gas denitrification system process | |
| CN202962265U (en) | Dry-process-based selective non-catalytic reduction device | |
| CN206168224U (en) | High -efficient denitrification facility of W flame boiler | |
| CN205627607U (en) | Modified SNCR denitrification facility of medium temperature high efficiency of gratefiring boiler | |
| CN203342646U (en) | Fluidized bed boiler flue gas denitrating device adopting urea hydrolysis SNCR (selective non-catalytic reduction) | |
| CN102671541A (en) | SNCR denitration agent for high and medium-temperature flue gas and use method thereof | |
| CN204933244U (en) | NOx removal device in coal-burning power plant's coal-powder boiler flue gas | |
| CN114849471A (en) | HTr-3SO combined denitration system applied to treatment of glass fiber kiln waste gas | |
| CN202983499U (en) | Industry furnace selective non-catalytic reduction (SNCR) denitration device based on computational fluid dynamics (CFD) | |
| CN204735100U (en) | Absorption system who carries out wet process oxidation denitration to flue gas of coal -fired chain boiler | |
| CN112915769A (en) | Halogen injection system for collaborative mercury removal of flue gas of coal-fired power plant | |
| CN102824841A (en) | Selective non-catalytic reduction (SNCR) denitration system of coal-fired circulating fluidized bed boiler | |
| CN209828701U (en) | Preparation facilities of mixed denitrifier based on aqueous ammonia + hydrazine | |
| CN203549804U (en) | CFB (circulating fluidized bed) boiler combustion optimization and SNCR (selective non-catalytic reduction) denitrification device | |
| CN204637957U (en) | A kind of equipment for denitrifying flue gas | |
| CN202606024U (en) | Selective non-catalytic reduction (SNCR) denitration device used for circulating fluidized bed flue gas cleaning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161012 Effective date of abandoning: 20181019 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20161012 Effective date of abandoning: 20181019 |