CN205137439U - Oxygendeficient steam hangs down ammonia combustion system - Google Patents
Oxygendeficient steam hangs down ammonia combustion system Download PDFInfo
- Publication number
- CN205137439U CN205137439U CN201520943395.9U CN201520943395U CN205137439U CN 205137439 U CN205137439 U CN 205137439U CN 201520943395 U CN201520943395 U CN 201520943395U CN 205137439 U CN205137439 U CN 205137439U
- Authority
- CN
- China
- Prior art keywords
- steam
- pipe
- dore furnace
- smoke
- box
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
Abstract
The utility model relates to an oxygendeficient steam hangs down ammonia combustion system, including kiln tail smoke -box, dore furnace, main coal -fired pipeline, cubic tuber pipe, C4 unloading pipe, steam catalytic unit, kiln tail smoke -box upper end is equipped with the smoke -box throat, be equipped with the dore furnace in the smoke -box throat, the smoke -box throat is equipped with with dore furnace cone portion juncture and raises the material boss, near evenly being equipped with four oxygendeficient combustors around the smoke -box throat in the dore furnace cone portion, the integration has the steam spray gun in the oxygendeficient combustor, the steam spray gun links to each other with steam catalytic unit, be equipped with the cubic tuber pipe in the first straight section of thick bamboo portion of dore furnace, the discharge end of C4 unloading pipe passes through depiler valve to be connected first unloading respectively and divides material pipe, second unloading to divide the material pipe, and its beneficial effect is: can follow the source and effectively reduce NOx's production, no secondary pollution, not have pollutant or accessory substance to generate, reduce the aqueous ammonia or urea consumption, reduce the reductant running cost, energy saving and consumption reduction.
Description
Technical field
The utility model relates to cement production device field, is specifically related to the low ammonia combustion system of a kind of oxygen deprivation steam.
Background technology
The novel dry-method cement clinker production line of existing more than the 2000t/d of China more than 1700, more than 5000t cement producing line accounts for more than 60%, amounts to more than 900 production line.National cement gross annual output amount reaches 2,300,000,000 tons more than, and NOx emission accounts for 15% ~ 18%, NOx of the total discharge in the whole nation has become the accomplice that major polluting atmosphere environment is detrimental to health, therefore reduces nitrogen oxide very urgent.
2011-2014 country carries out denitration improvement in cement industry mandatory installation SNCR technology to kiln tail gas, discharged nitrous oxides reaches discharging standards substantially, but cement production enterprise operating cost significantly increases, reducing agent ammonia volume 2500t/d production line is 400-800kg/h, 5000t/d production line is 700-1200kg/h, ton grog denitration cost increases average out to 3-4.8 unit/t, and enterprise increases production cost 300-800 ten thousand yuan every year.Newly-built enterprise was from 1 day March in 2014; existing enterprise execution environment protection portion and State Administration for Quality Supervision and Inspection and Quarantine from 1 day July in 2015 issue the cement industry atmosphere pollutants emission standards GB4915-2013 implemented; specify that existing cement plant nitrogen oxide (by NO2) concentration of emission is no more than 400mg/Nm3 (local general 300mg/Nm3), cement plant, key area nitrogen oxide (by NO2) concentration of emission is no more than 320mg/Nm3 (local general 300mg/Nm3).After implementing new standard, cement production enterprise denitration cost is faced with larger pressure, and profit is more and more lower.Energy-saving and cost-reducing, new technology technological transformation denitrating technique, reduces the task of top priority that denitration operating cost is enterprise.
Summary of the invention
For overcoming described deficiency, the purpose of this utility model is to provide a kind of oxygen deprivation steam low ammonia combustion system, effectively can reduce generation, the non-secondary pollution of NOx from source, pollutant or accessory substance is not had to generate, reduce ammoniacal liquor or urea consumption, reduce reducing agent operating cost, energy-saving and cost-reducing.
The utility model solves the technical scheme that its technical problem adopts: the low ammonia combustion system of a kind of oxygen deprivation steam, comprise kiln tail smoke-box, dore furnace, main coal-fired pipeline, tertiary-air pipe, C4 tremie pipe, vapor catalyzed device, described kiln tail smoke-box upper end is provided with smoke-box reducing, described smoke-box reducing is provided with dore furnace, described dore furnace is set to cone portion from bottom to top successively, first vertical tube part, spurt mouth, second vertical tube part, one end that described cone portion is connected with smoke-box reducing is one end that diameter is little, described smoke-box reducing and dore furnace cone portion intersection are provided with lifting boss, surrounding near smoke-box reducing in described dore furnace cone portion is evenly provided with four combustion with meagre oxygen devices, steam spraying gun is integrated with in described combustion with meagre oxygen device, described steam spraying gun is connected with vapor catalyzed device, described dore furnace first vertical tube part is provided with tertiary-air pipe, the discharge end of described C4 tremie pipe connects the first blanking sub-feed tube respectively by material distributing valve, second blanking sub-feed tube, first vertical tube part of described first blanking sub-feed tube conjunctive decomposition stove, and be positioned at the upper position of tertiary-air pipe, the cone portion of described second blanking sub-feed tube conjunctive decomposition stove, and be positioned at the upper position of combustion with meagre oxygen device.
Further, described main coal-fired pipeline is provided with convey coal pipe, described convey coal pipe is divided into two the first laterals away from one end of main coal-fired pipeline, two described first laterals are divided into the second lateral away from one end of convey coal pipe, the free end of described second lateral is connected with combustion with meagre oxygen device by a point coal device, the rear portion of described main coal-fired pipeline and convey coal pipe connector is provided with shutoff valve for subsequent use, and described convey coal pipe is provided with shutoff valve.
Further, the latus rectum of described main coal-fired pipeline and convey coal pipe is measure-alike.
Further, described vapor catalyzed device comprises catalyst tank, steam control system, catalyst tank is connected with steam control system by jet chimney, the output of described steam control system is provided with jet chimney, the output of described jet chimney is provided with annular steam pipeline, and described annular steam pipeline is connected with the steam spraying gun of combustion with meagre oxygen device by a point jet chimney.
Further, bottom described tertiary-air pipe, benchmark is located at 240mm place above dore furnace first vertical tube part and cone portion boundary line.
Further, described tertiary-air pipe is provided with tap hole before entering dore furnace, second vertical tube part of described dore furnace is provided with a through hole, described through hole is connected with tap hole by the denitrogenation pipe of equal diameters, be lined with refractory material in described denitrogenation pipe, described denitrogenation pipe is provided with the first expansion joint, gate valve.
Further, described combustion with meagre oxygen device is set to oxygen deprivation turbulent burner.
The utility model has following beneficial effect: this use is novel is set up reducing zone between smoke-box and the following conical section of tertiary-air pipe, kiln tail fire coal sprays into reducing zone by 4 combustion with meagre oxygen devices, 4 jiaos of coal powder injection modes, generates water-gas reduction of nitrogen oxide is become N through catalysis with the cogeneration saturated vapor of metal ion with scorching hot coal
2; Fabrication and installation C4 tremie pipe first sub-feed tube, the second sub-feed tube divide hot for C4 raw material to be expected and mixes with coal combustion above the combustion with meagre oxygen device of reducing zone, the alkaline metal oxides such as the calcium oxide in hot raw material, di-iron trioxide, magnesia have catalytic action to NOx reduction reaction to be made reaction to positive direction development and carries out fast, simultaneously hot raw material regulate reducing zone temperature to be applicable to reducing NOx condition, and ensure dore furnace cone not skinning without material phenomenon of collapsing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is side structure schematic diagram of the present utility model.
Fig. 3 of the present utility modelly overlooks direction structure schematic diagram.
Fig. 4 is the utility model dore furnace cone portion combustion with meagre oxygen device structural representation.
Fig. 5 is the utility model oxygen burner jet chimney structural representation.
Fig. 6 is the utility model tremie pipe part-structure schematic diagram.
Fig. 7 is kiln tail smoke-box and dore furnace cone portion link position structural representation before the utility model transformation.
Fig. 8 is kiln tail smoke-box and dore furnace cone portion link position structural representation after the utility model transformation.
Fig. 9 is the structural representation of the utility model denitrogenation tube portion.
In figure, 1 dore furnace, 11 first vertical tube parts, 12 cone portion, 13 spurt mouth, 14 second vertical tube parts, 2 tertiary-air pipe, 21 denitrogenation pipes, 22 gate valves, 23 first expansion joints, 3C4 tremie pipe, 31 first blanking sub-feed tubes, 32 second blanking sub-feed tubes, 321 second expansion joints, 322 seasoning spreading boxes, 33 material distributing valves, 41 main coal-fired pipelines, 411 shutoff valves for subsequent use, 42 convey coal pipes, 421 shutoff valves, 43 first laterals, 44 second laterals, 5 combustion with meagre oxygen devices, 6 kiln tail smoke-boxes, 61 smoke-box reducings, 7 lifting boss, 8 jet chimneys, 81 annular steam pipelines, 9 vapor catalyzed devices.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now.
According to the low ammonia combustion system of a kind of oxygen deprivation steam shown in Fig. 1 to Fig. 9, comprise kiln tail smoke-box 6, dore furnace 1, main coal-fired pipeline 41, tertiary-air pipe 2, C4 tremie pipe 3, vapor catalyzed device 9, described kiln tail smoke-box 6 upper end is provided with smoke-box reducing 61, described smoke-box reducing 61 is provided with dore furnace 1, described dore furnace 1 is set to cone portion 12 from bottom to top successively, first vertical tube part 11, spurt mouth 13, second vertical tube part 14, one end that described cone portion 12 is connected with smoke-box reducing 61 is one end that diameter is little, described smoke-box reducing 61 is provided with lifting boss 7 with dore furnace 1 cone portion 12 intersection, weaken the swirling motion of dore furnace 1 cone portion 12 inside, be beneficial to material dispersion and and air-flow, the mixing of coal dust, the backspin ensureing not cause a large amount of raw material or pulverized coal particle to be caused by swirling motion and take reducing place of dore furnace 1 cone portion 12 to, and avoid raw material flushing collapse material phenomenon generation, surrounding near smoke-box reducing 61 in described dore furnace 1 cone portion 12 is evenly provided with four combustion with meagre oxygen devices 5, steam spraying gun is integrated with in described combustion with meagre oxygen device 5, described steam spraying gun is connected with vapor catalyzed device 9, described dore furnace 1 first vertical tube part 11 is provided with tertiary-air pipe 2, move in the tertiary-air pipe 2 being located at dore furnace 1 cone portion 12 in prior art, hypoxemia reducing zone is made to have sufficient reaction compartment, the discharge end of described C4 tremie pipe 3 connects the first blanking sub-feed tube 31 respectively by material distributing valve 33, second blanking sub-feed tube 32, first vertical tube part 11 of described first blanking sub-feed tube 31 conjunctive decomposition stove 1, and be positioned at the upper position of tertiary-air pipe 2, the cone portion 12 of described second blanking sub-feed tube 32 conjunctive decomposition stove 1, and be positioned at the upper position of combustion with meagre oxygen device 5, by the raw material in dore furnace 1C4 tremie pipe 3, separate a part and enter dore furnace 1 cone portion 12 appropriate location, the temperature regulating dore furnace 1 can be reached, prevent the generation of high temperature skinning, part raw material are entered the hypoxemia reducing zone of transformation simultaneously, utilize the alkali metal oxide such as calcium oxide in raw material to the catalytic action of coal tar and coal reduction NO, the NO generated in reduction kiln
x, and for the higher coal of volatile matter content, the catalytic action of raw material to reductive NO is stronger.
Further, described main coal-fired pipeline 41 is provided with convey coal pipe 42, described convey coal pipe 42 is divided into two the first laterals 43 away from one end of main coal-fired pipeline 41, two described first laterals 43 are divided into two the second laterals 44 respectively away from one end of convey coal pipe 42, the free end of described second lateral 44 is connected with combustion with meagre oxygen device 5 by a point coal device, described main coal-fired pipeline 41 is provided with shutoff valve 411 for subsequent use with the rear portion of convey coal pipe 42 connector, described convey coal pipe 42 is provided with shutoff valve 421, four combustion with meagre oxygen devices 5 360 °/4 to be uniformly distributed in cone portion 12 hoop plane, coal dust is entered in reducing zone through nozzle at high speeds, and fully disperse, and make the coal dust sprayed into form radial diffusion in stove, thus strengthen reaction dynamics and extend the reaction time, ensure the reducing atmosphere that anoxycausis produces, NOx a large amount of in reduction kiln exit gas, produce good denitration efficiency.
Further, described main coal-fired pipeline 41 is measure-alike with the latus rectum of convey coal pipe 42.
Further, described vapor catalyzed device 9 comprises catalyst tank, steam control system, the output of described catalyst tank is connected with steam control system input, the output of described steam control system is provided with jet chimney 8, the output of described jet chimney 8 is provided with annular steam pipeline 81, described annular steam pipeline 81 is connected with the steam spraying gun of combustion with meagre oxygen device 5 by a point jet chimney, the saturated vapor of steam spraying gun ejection mixes with the scorching hot coal dust that combustion with meagre oxygen device 5 sprays, scorching hot coal tar and steam reaction, the NO in the carbon monoxide of generation and hydrogen and kiln gas
xthere is reduction reaction, by NO
xbe converted into free of contamination N
2.
Further, bottom described tertiary-air pipe 2, benchmark is located at 240mm place above dore furnace 1 first vertical tube part 11 and cone portion 12 boundary line.
Further, tap hole is provided with before described tertiary-air pipe 2 enters dore furnace 1, second vertical tube part 14 of described dore furnace 1 is provided with a through hole, described through hole is connected with tap hole by the denitrogenation pipe 21 of equal diameters, refractory material is lined with in described denitrogenation pipe 21, described denitrogenation pipe 21 is provided with the first expansion joint 23, gate valve 22, realizes newly-increased denitrogenation pipe 21 usefulness by the size that gate valve 22 regulates tertiary-air pipe 2 to enter the air capacity on dore furnace 1 top.
Further, described combustion with meagre oxygen device 5 is set to oxygen deprivation turbulent burner.
The utility model is not limited to described embodiment, and anyone should learn the structure change made under enlightenment of the present utility model, and every have identical or close technical scheme with the utility model, all falls within protection domain of the present utility model.
Technology, shape, structure part that the utility model is not described in detail are known technology.
Claims (7)
1. the low ammonia combustion system of oxygen deprivation steam, comprise kiln tail smoke-box, dore furnace, main coal-fired pipeline, tertiary-air pipe, C4 tremie pipe, it is characterized in that: also comprise vapor catalyzed device, described kiln tail smoke-box upper end is provided with smoke-box reducing, described smoke-box reducing is provided with dore furnace, described dore furnace is set to cone portion from bottom to top successively, first vertical tube part, spurt mouth, second vertical tube part, one end that described cone portion is connected with smoke-box reducing is one end that diameter is little, described smoke-box reducing and dore furnace cone portion intersection are provided with lifting boss, surrounding near smoke-box reducing in described dore furnace cone portion is evenly provided with four combustion with meagre oxygen devices, steam spraying gun is integrated with in described combustion with meagre oxygen device, described steam spraying gun is connected with vapor catalyzed device, described dore furnace first vertical tube part is provided with tertiary-air pipe, the discharge end of described C4 tremie pipe connects the first blanking sub-feed tube respectively by material distributing valve, second blanking sub-feed tube, first vertical tube part of described first blanking sub-feed tube conjunctive decomposition stove, and be positioned at the upper position of tertiary-air pipe, the cone portion of described second blanking sub-feed tube conjunctive decomposition stove, and be positioned at the upper position of combustion with meagre oxygen device.
2. the low ammonia combustion system of a kind of oxygen deprivation steam according to claim 1, it is characterized in that: described main coal-fired pipeline is provided with convey coal pipe, described convey coal pipe is divided into two the first laterals away from one end of main coal-fired pipeline, two described first laterals are divided into two the second laterals respectively away from one end of convey coal pipe, the free end of described second lateral is connected with combustion with meagre oxygen device by a point coal device, the rear portion of described main coal-fired pipeline and convey coal pipe connector is provided with shutoff valve for subsequent use, and described convey coal pipe is provided with shutoff valve.
3. the low ammonia combustion system of a kind of oxygen deprivation steam according to claim 2, is characterized in that: the latus rectum of described main coal-fired pipeline and convey coal pipe is measure-alike.
4. the low ammonia combustion system of a kind of oxygen deprivation steam according to claim 1, it is characterized in that: described vapor catalyzed device comprises catalyst tank, steam control system, the output of described catalyst tank is connected with steam control system input, the output of described steam control system is provided with jet chimney, the output of described jet chimney is provided with annular steam pipeline, and described annular steam pipeline is connected with the steam spraying gun of combustion with meagre oxygen device by a point jet chimney.
5. the low ammonia combustion system of a kind of oxygen deprivation steam according to claim 1, is characterized in that: bottom described tertiary-air pipe, benchmark is located at 240mm place above dore furnace first vertical tube part and cone portion boundary line.
6. the low ammonia combustion system of a kind of oxygen deprivation steam according to claim 1, it is characterized in that: described tertiary-air pipe is provided with tap hole before entering dore furnace, second vertical tube part of described dore furnace is provided with a through hole, described through hole is connected with tap hole by the denitrogenation pipe of equal diameters, be lined with refractory material in described denitrogenation pipe, described denitrogenation pipe is provided with the first expansion joint, gate valve.
7. the low ammonia combustion system of a kind of oxygen deprivation steam according to claim 1, is characterized in that: described combustion with meagre oxygen device is set to oxygen deprivation turbulent burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520943395.9U CN205137439U (en) | 2015-11-24 | 2015-11-24 | Oxygendeficient steam hangs down ammonia combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520943395.9U CN205137439U (en) | 2015-11-24 | 2015-11-24 | Oxygendeficient steam hangs down ammonia combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205137439U true CN205137439U (en) | 2016-04-06 |
Family
ID=55623229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520943395.9U Active CN205137439U (en) | 2015-11-24 | 2015-11-24 | Oxygendeficient steam hangs down ammonia combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205137439U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953224A (en) * | 2016-06-20 | 2016-09-21 | 上海三融环保工程有限公司 | Saturated steam catalytic burner used for cement decomposition furnace |
| CN106595294A (en) * | 2016-10-11 | 2017-04-26 | 北京绿岩环保科技有限责任公司 | Special type catalytic reduction method composite denitration system |
| CN106642085A (en) * | 2016-12-29 | 2017-05-10 | 湘潭大学 | Staged combustion technology for achieving efficient combustion of fire-retardant coal in pre-decomposition kiln and low NOx emission |
| CN109503008A (en) * | 2018-11-08 | 2019-03-22 | 中国中材国际工程股份有限公司 | A kind of cement clinker burning system and its without ammonia denitrating technique method |
| CN110227333A (en) * | 2019-07-05 | 2019-09-13 | 山东泰溥建材科技有限公司 | Spray denitrator |
| CN110487081A (en) * | 2019-09-29 | 2019-11-22 | 沂水山水水泥有限公司 | A kind of improved method of dore furnace tertiary-air pipe |
| CN111189328A (en) * | 2018-11-14 | 2020-05-22 | 福建金牛水泥有限公司 | Kiln tail low-ammonia combustion equipment and implementation method thereof |
-
2015
- 2015-11-24 CN CN201520943395.9U patent/CN205137439U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953224A (en) * | 2016-06-20 | 2016-09-21 | 上海三融环保工程有限公司 | Saturated steam catalytic burner used for cement decomposition furnace |
| CN106595294A (en) * | 2016-10-11 | 2017-04-26 | 北京绿岩环保科技有限责任公司 | Special type catalytic reduction method composite denitration system |
| CN106595294B (en) * | 2016-10-11 | 2020-05-22 | 北京绿岩环保科技有限责任公司 | Catalytic reduction method composite denitration system |
| CN106642085A (en) * | 2016-12-29 | 2017-05-10 | 湘潭大学 | Staged combustion technology for achieving efficient combustion of fire-retardant coal in pre-decomposition kiln and low NOx emission |
| CN109503008A (en) * | 2018-11-08 | 2019-03-22 | 中国中材国际工程股份有限公司 | A kind of cement clinker burning system and its without ammonia denitrating technique method |
| CN111189328A (en) * | 2018-11-14 | 2020-05-22 | 福建金牛水泥有限公司 | Kiln tail low-ammonia combustion equipment and implementation method thereof |
| CN110227333A (en) * | 2019-07-05 | 2019-09-13 | 山东泰溥建材科技有限公司 | Spray denitrator |
| CN110487081A (en) * | 2019-09-29 | 2019-11-22 | 沂水山水水泥有限公司 | A kind of improved method of dore furnace tertiary-air pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205137439U (en) | Oxygendeficient steam hangs down ammonia combustion system | |
| CN102179171B (en) | Multi-stage themolysis coupled denitration method using front flow field uniformizing device and device thereof | |
| CN109364711A (en) | A kind of flue gas system for the ultra-clean processing of cement kiln tail gas | |
| CN108905590B (en) | Denitration system and method for low-nitrogen burner of power station boiler in cooperation with high-temperature ammonia injection | |
| CN205133418U (en) | Catalysis of cement kiln steam and coal powder gasification system | |
| CN109058979B (en) | Cyclone furnace denitration system and method | |
| CN209490672U (en) | A kind of flue gas system for the ultra-clean processing of cement kiln tail gas | |
| CN107842849A (en) | A kind of low NO of cement decomposing furnace coal dust pre-vaporizedXCombustion system and method | |
| CN106178907A (en) | A kind of CFBB ultra-fine desulfurizer granule sulfur method | |
| CN203731858U (en) | Novel kiln tail decomposing furnace device of cement clinker production line | |
| CN106310933A (en) | Flue gas denitration system for coal water slurry boiler and method for denitrating flue gas | |
| CN209188464U (en) | Reduce the denitrification device of burning clinker of cement SNCR reducing agent dosage | |
| CN104624425A (en) | Air atomization spray gun for denitration | |
| CN208878272U (en) | A kind of denitrating system of station boiler low NO collaboration high temperature spray ammonia | |
| CN202087235U (en) | Multi-level thermolysis coupling denitrification device with pre-flow field equalizing device | |
| CN215196238U (en) | Denitration device for cement production | |
| CN207680333U (en) | Urea direct-injection SNCR+SCR flue gas denitrification systems | |
| CN204901755U (en) | Reduce cement rotary kiln NOX's coal slurry spray gun | |
| CN212142070U (en) | Ammonia gas uniform distributor for SNCR denitration process | |
| CN102210971B (en) | Circulating fluidized bed boiler desulfurizer | |
| CN204063029U (en) | A kind of middle-size and small-size low nitrogen coal powder burner used for industrial furnace | |
| CN203744715U (en) | Staged burning decomposing furnace | |
| CN206430547U (en) | Extraordinary catalytic reduction method composite denitration system | |
| CN106595294B (en) | Catalytic reduction method composite denitration system | |
| CN207350356U (en) | Smoke-heating device for denitrating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |