CN103157356A - Sintering denitrification system and nitrogen oxide removal method thereof - Google Patents
Sintering denitrification system and nitrogen oxide removal method thereof Download PDFInfo
- Publication number
- CN103157356A CN103157356A CN2011104191894A CN201110419189A CN103157356A CN 103157356 A CN103157356 A CN 103157356A CN 2011104191894 A CN2011104191894 A CN 2011104191894A CN 201110419189 A CN201110419189 A CN 201110419189A CN 103157356 A CN103157356 A CN 103157356A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- sintering
- circulating
- nitrogen oxide
- gas
- 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.)
- Granted
Links
Images
Abstract
A sintering denitrification system and a nitrogen oxide removal method thereof. The invention discloses a sintering denitrification system, comprising a sintering machine, air boxes, an electricprecipitator, a desulfurization device, a main exhaust fan and a chimney, which are connected by a sintering flue gas main pipeline. The system is characterized in that a branch pipe is led out from an outlet pipe of the air boxes in a nitrogen oxide high concentration zone as a sintering flue gas circulating pipeline; the sintering flue gas circulating pipe is successively connected with a circulating flue gas baffle valve, a dust remover, a natural gas entrance valve connected with an outer intake pipe, a circulating fan and a circulating flue gas cover, which is covered on a sinter layer right above the air boxes in nitrogen oxide high concentration zone. The sintering flue gas enters into air boxes in the high concentration zone, and introduces part of the flue gas into the flue gas circulating pipe to become circulating sintering flue gas; the volume of the circulating sintering flue gas is controlled by the circulating flue gas baffle valve; the circulating sintering flue gas is dedusted by the electricprecipitator and then mixed with natural gas and air entering from the natural gas entrance valve; the mixed gas is introduced into the circulating flue gas covert through the circulating fan; and the circulating sintering flue gas reacts with sintering flue gas with high NOx concentration for partial denitration.
Description
Technical field
The invention belongs to the environmental protection technical field of metallurgy sintering smoke denitration, relate in particular to a kind of sintering denitrating system and remove the method for nitrogen oxide.
Background technology
In " 12 " planning, China is clear and definite to nitrogen oxide (NO
x) control comprehensively.Concrete decontrol index draft into, it is to reduce 10% than 2010 that the ammonia nitrogen total emission volumn is controlled target, key industry and key area discharged nitrous oxides total amount were than minimizing 10% in 2010.And steel industry sinter fume complicated component, except containing sulfur dioxide, dust, also contains NO
xdeng pollutant.In " 12 " nitrogen oxide overall control basic ideas, propose, iron and steel, Industrial Boiler are also the important emission sources of nitrogen oxide, reduce discharging field for expanding nitrogen oxide, advance nitrogen oxide to continue to reduce discharging, should accelerate research and development and the industrialization process of the other industry nitrogen oxide control technologys such as metallurgy industry, Industrial Boiler during " 12 ", advance the construction of denitrating flue gas demonstration project.
The NO of metallurgy sintering smoke
xconcentration than low, exhaust gas volumn is large, and flue-gas temperature will be lower than traditional flue-gas denitration process.Traditional selective-catalytic-reduction denitrified technique (SCR) is in the operating temperature interval of 300～450 ℃, and SNCR denitrating technique (SNCR) is in the operating temperature interval of 950～1150 ℃.If adopt independent SCR or SNCR device to carry out denitration to sinter fume, just need to carry out heat treatment again to sinter fume.The operating temperature interval of SNCR technique is far away higher than the sinter fume temperature, and it is unpractical adopting heat treatment again.And the SCR process costs is higher, be difficult to be accepted by Iron and Steel Enterprises in China.Therefore, the denitrating technique research in practical sintering process is imperative more economically.
New by looking into, can retrieve some Patents.As " for the online method of denitration of sintering process " invention (publication number CN 1286314A), a kind of online method of denitration for sintering process is disclosed, it is mainly to add the bonding assistant such as granulated sugar in the blending process of SINTERING PRODUCTION, strengthened raw materials for sintering granulation and caking property, improve the gas permeability of raw materials for sintering and shorten sintering time, make nitrogen in raw materials for sintering change into the chance reduction of nitrogen oxide, and then suppress the discharge of sintering nitrogen oxides of exhaust gas.But the method is used a large amount of granulated sugar can make the sintering operating cost greatly raise as sintering adjuvant." a kind of method that removes nitrogen oxide in sinter fume " (Granted publication CN 101053749A) discloses a kind of method that removes nitrogen oxide in sinter fume, the method adds ammoniation in sinter mixture, and described ammoniation comprises that the ammonia that contains of urea, ammonium salt, ammoniacal liquor, coal chemical industry enterprises distills waste water or cyanogen amide.In sintering process, ammoniation discharges ammonia, by the NO in sinter fume
xbe reduced to N
2.Although this method can remove the NO in sinter fume
x, but unreacted ammonia can discharge with flue gas, and ammonia more will be far more than NO to environment and the mankind's harm
x." a kind ofly in metallurgy sintered process, remove NO
xmethod " (Granted publication CN101033503A) replace coal and act as a fuel by add coke powder or semi-coke powder in the SINTERING PRODUCTION blending process, and introduces coal gas in sintering process, utilizes the reducibility gas H in coke powder and coal gas
2, CH
4, CO is the NO in sinter fume
xreduction.The coke powder of usining in the method replaces coal as sintering fuel, and the coal gas amount of introducing accounts for 1%～10% of sintering gas volume total amount, and these measures have increased the sintering cost greatly.Make the method be difficult to be accepted.
In sum, current sintering process method of denitration, some costs are higher, and some meetings affect sintering normally produces, and all is difficult to apply in sintering.Therefore, the denitrating technique of seeking in more practical, effective sintering process is very urgent and necessary.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, technical problem to be solved by this invention is to provide a kind of low cost, can effectively reduce the sintering denitrating system of discharged nitrous oxides concentration in sinter fume and remove the method for nitrogen oxide, reduced the pollution of sinter fume to environment.
Sintering denitrating system of the present invention comprises the sintering machine connected by the sinter fume main line in original sintering system, bellows, electric cleaner, desulfurizer, main exhauster and chimney, the present invention is on above original sintering system architecture basics, on the export pipeline of nitrogen oxide high concentration region bellows, draw a branch line as the sinter fume circulation line, be connected with the circulating flue gas flapper valve in turn on this sinter fume circulation line, deduster, the gas inlet valve be connected with the external admission pipe, circulating fan and circulating flue gas cover, the circulating flue gas cover cover on nitrogen oxide high concentration region bellows directly on sinter bed, can not make like this nitrous oxides concentration in the nitrogen oxide low concentration region of processing without denitration raise.
Difference according to sintering machine discharge nitrogen oxides in effluent concentration, bellows can be divided into nitrogen oxide low concentration region bellows and nitrogen oxide high concentration region bellows, be that in nitrogen oxide high concentration region bellows, flue gas accounts for sinter fume volume total amount 40%～60%, wherein amount of nitrogen oxides accounts for 75%～85% of sintered fume nitric oxide cumulative volume content; In nitrogen oxide low concentration region bellows, flue gas is also to account for 40%～60% of sinter fume volume total amount, and wherein amount of nitrogen oxides accounts for 15%～25% of sintered fume nitric oxide cumulative volume content; According to the present invention of these characteristics, only the flue gas in nitrogen oxide high concentration region bellows is circulated and the denitration processing.
The sintering denitrating system removes the method for nitrogen oxide, after sinter fume enters the high concentration region bellows, partial fume is incorporated in the flue gas recirculation pipeline and becomes the cycle sintering flue gas, the cycle sintering exhaust gas volumn is controlled by the circulating flue gas flapper valve, the cycle sintering flue gas carries out dedusting by deduster, then the natural gas and the air that with the gas inlet valve, enter mix, and mixed gas is introduced in the circulating flue gas cover by circulating fan, cycle sintering flue gas and high NO
xthe reaction of concentration sinter fume, carry out the part denitration.Under sintering negative-pressure operation condition, the circulating flue gas mixed passes through sinter bed, when 550 ℃ of sintering belts～850 ℃ of temperature ranges, methane in natural gas is activated, under raw materials for sintering iron ore in sinter bed and the catalytic action of calcium oxide, the methane that a part is activated is nitrogen by the reduction of nitrogen oxide in sinter fume, and major part has neither part nor lot in the methane of denitration reaction, can oxidizing fire be CO
2and H
2o, for sintering process provides heat.
Wherein cycle sintering exhaust gas volumn (from the sintering machine wind box outlet, being incorporated into the flue gas circulation line) accounts for 20%～50% of circulating flue gas total amount volume ratio, natural gas accounts for 0.3%～1.0% of circulating flue gas total amount volume ratio, introduce air and account for 50%～80% of circulating flue gas total amount volume ratio, require methane content in natural gas to enrich, concentration will be higher than volume ratio 80%.
In this sintering process, the method for denitration can not affect normal SINTERING PRODUCTION, and has reduced the sinter fume discharge capacity, for follow-up electric cleaner and desulfurizer have reduced live load.SCR technique (SCR) investment cost of tradition denitrating flue gas is high, account for more than 40% of sintering gross investment, be difficult to be accepted by iron and steel enterprise, this patent is by flue gas in nitrogen oxide high concentration region bellows is circulated, and introducing contains the natural gas that enriches methane in circulating flue gas.In sintering process, by the nitrogen oxide in the iron ore in sinter bed and Cao Catalyst methane reduction sinter fume.Most of methyl hydride combustion provides heat for sintering simultaneously.There are convenient operation, small investment, characteristics that denitration efficiency is high.
The accompanying drawing explanation
Fig. 1 is this sintering denitrating system structural representation;
Fig. 2 is the design sketch of iron oxide catalytic methane denitration;
Fig. 3 is the design sketch of Cao Catalyst methane denitration.
Wherein, 1 sintering machine, 2 bellows, 3 circulating flue gas flapper valves, 4 cyclone dust collectors, 5 gas inlet valves, 6 circulating fans, 7 circulating flue gas covers, 8 sinter fume main lines, 9 sinter fume circulation lines, 10 electric cleaners, 11 desulfurizers, 12 main exhausters, 13 chimneys, 14 sinter beds.
The specific embodiment
Below in conjunction with the specific embodiment, the present invention is further described:
Introduce preferred forms of the present invention below in conjunction with Fig. 1 explanation: this sintering of the present invention denitrating system structure comprises: 1 sintering machine, 2 bellows, 3 circulating flue gas flapper valves, 4 cyclone dust collectors, 5 gas inlet valves, 6 circulating fans, 7 circulating flue gas covers, 8 sinter fume main lines, 9 sinter fume circulation lines, 10 electric cleaners, 11 desulfurizers, 12 main exhausters, 13 chimneys, 14 sinter beds.
In sintering process, sintering machine 1 produces a large amount of sinter fumes, and sinter fume is pumped via the bellows 2 of sintering machine bottom.Difference according to sintering machine discharge nitrogen oxides in effluent concentration, be divided into nitrogen oxide low concentration region bellows A and nitrogen oxide high concentration region bellows B two parts by bellows 2.Nitrogen oxide high concentration region bellows B refers to that flue gas accounts for 50% of sinter fume volume total amount, but wherein amount of nitrogen oxides accounts for 80% the bellows (nitrogen oxide high concentration region bellows B normally below sintering machine in the middle of 1/3rd bellows position) of sintered fume nitric oxide cumulative volume content; Nitrogen oxide low concentration region bellows A refers to, flue gas is also to account for 50% of sinter fume volume total amount, wherein amount of nitrogen oxides account for sintered fume nitric oxide cumulative volume content 20% bellows (nitrogen oxide low concentration region bellows A normally below sintering machine first three/bellows of a position and rear 1/3rd positions).
Wherein bellows 2 are equipped with in sintering machine 1 bottom, and bellows 2 are divided into the outlet flue gas pipeline.On outlet flue gas pipeline below nitrogen oxide high concentration region bellows B, draw a sinter fume circulation line 9, the gas inlet valve 5 that be connected with circulating flue gas flapper valve 3, cyclone dust collectors 4 in turn, with the external admission pipe, is connected, circulating fan 6 and circulating flue gas cover 7.Air and natural gas enter sinter fume circulation line 9 from gas inlet valve 5, and circulating flue gas cover 7 directly cover is buckled on the sinter bed 14 of nitrogen oxide high concentration region bellows B top.The outlet flue gas pipeline of nitrogen oxide high concentration region bellows B below is connected sinter fume main line 8 jointly with the outlet flue gas pipeline of nitrogen oxide low concentration region bellows A below, is connected to electric cleaner 10, desulfurizer 11, main exhauster 12 and chimney 13 on sinter fume main line 8.
The present invention removes the nitrogen oxide method:
By above-mentioned sintering denitrating system, sinter fume circulation line 9 is by the control of circulating flue gas flapper valve 3, the sinter fume that extracts volume ratio 40% in export pipeline below nitrogen oxide high concentration region bellows B becomes the cycle sintering flue gas, enter sinter fume circulation line 9, then the cycle sintering flue gas carries out the gravity mechanical dedusting by cyclone dust collectors 4, the main purpose of cyclone dust collectors is that grit larger in the cycle sintering flue gas is removed, and the grit of removing can be used as raw materials for sintering again.Cycle sintering flue gas after the cyclone dust collectors dedusting mixes with natural gas and the air introduced via gas inlet valve 5, wherein natural gas accounts for the volume ratio 1.0% of the total exhaust gas volumn of circulation, air accounts for 59% of circulating flue gas total amount volume ratio, and in natural gas, methane concentration will be higher than 80%, this requirement is in order to guarantee in the sintering denitrification process, has sufficient methane to participate in reductive NO
xreaction.Then the cycle sintering flue gas enters in circulating flue gas cover 7 by circulating fan 6 as sintering denitration and combustion-supporting gas.The part circulation of sinter fume has improved the temperature of sintering combustion-supporting gas, also can save the energy consumption of SINTERING PRODUCTION, reduces the sintering expense.Under sintering machine 1 negative-pressure operation condition, the circulating flue gas mixed passes through sinter bed, in 550 ℃～850 ℃ temperature ranges of sintering belt, methane in natural gas starts to be activated, in sinter bed, under the catalytic action of iron ore and calcium oxide, the methane that a small part is activated can be nitrogen by the reduction of nitrogen oxide in sinter fume; And most of methane meeting oxidizing fire generates CO
2and water, for sintering process provides heat.
Fig. 2 and Fig. 3 are that iron oxide and Cao Catalyst methane remove NO under certain experimental condition
xdesign sketch.Can find out, during oxygen-free gas, in 350～750 ℃ of temperature ranges, NO
xthere is no and transform, but the iron oxide catalytic methane removes NO in the time of 850 ℃
xconversion ratio has reached nearly 100%.Calcium oxide is during as catalyst, and NO in the time of 650 ℃ is arranged under Oxygen Condition
xconversion ratio reaches peak 43%; Under the no oxygen condition, in the time of 850 ℃, NO
xconversion ratio has reached 91% especially.This experimental result shows that iron oxide and calcium oxide all have catalytic denitration effect preferably.
Sinter fume through the sintering process denitration enters B district bellows, wherein a part repeats to enter sinter fume circulation line 9, the flue gas of circulation does not mix with nitrogen oxide low-concentration flue gas in the A district, enter follow-up electric cleaner 10 by sinter fume main line 8 and carry out electric precipitation, the sinter fume after dedusting enters desulfurizer 11 and carries out flue gas desulfurization.Flue gas after desulfurization discharges atmosphere via main exhauster 12 from chimney 13.Owing to partially sintering the flue gas recirculation utilization, the exhaust gas volumn that makes electric cleaner 10 and desulfurizer 11 process has reduced 20%, has reduced the investment operating cost of electric cleaner 7 and desulfurizer 8.
Claims (5)
1. a sintering denitrating system, comprise the sintering machine (1) connected by sinter fume main line (8), bellows (2), electric cleaner (10), desulfurizer (11), main exhauster (12) and chimney (13), it is characterized in that on the export pipeline of nitrogen oxide high concentration region bellows, draw a branch line as sinter fume circulation line (9), be connected with circulating flue gas flapper valve (3) in turn on this sinter fume circulation line (9), deduster (4), the gas inlet valve (5) be connected with the external admission pipe, circulating fan (6) and circulating flue gas cover (7), circulating flue gas cover (7) cover on nitrogen oxide high concentration region bellows directly on sinter bed (14).
2. sintering denitrating system according to claim 1, it is characterized in that: in described nitrogen oxide high concentration region bellows, flue gas accounts for 40%～60% of sinter fume volume total amount, and wherein amount of nitrogen oxides accounts for 75%～85% of sintered fume nitric oxide cumulative volume content; In nitrogen oxide low concentration region bellows, flue gas is also to account for 40%～60% of sinter fume volume total amount, and wherein amount of nitrogen oxides accounts for 15%～25% of sintered fume nitric oxide cumulative volume content.
3. one kind is utilized sintering denitrating system according to claim 1 to remove the method for nitrogen oxide, after it is characterized in that sinter fume enters the high concentration region bellows, partial fume is incorporated in flue gas recirculation pipeline (9) and becomes the cycle sintering flue gas, the cycle sintering exhaust gas volumn is controlled by circulating flue gas flapper valve (3), the cycle sintering flue gas carries out dedusting by deduster (4), then the natural gas and the air that with gas inlet valve (5), enter mix, mixed gas is introduced in circulating flue gas cover (7) by circulating fan (6), cycle sintering flue gas and high NO
xthe reaction of concentration sinter fume, carry out the part denitration.
4. the method that removes nitrogen oxide according to claim 3, it is characterized in that wherein the cycle sintering exhaust gas volumn accounts for 20%～50% of circulating flue gas total amount volume ratio, natural gas accounts for 0.3%～1.0% of circulating flue gas total amount volume ratio, introduces air and accounts for 50%～80% of circulating flue gas total amount volume ratio.
5. according to the described method that removes nitrogen oxide of claim 3 or 4, it is characterized in that in described natural gas, methane content concentration will be higher than volume ratio 80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110419189.4A CN103157356B (en) | 2011-12-14 | 2011-12-14 | Sintering denitrification system and nitrogen oxide removal method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110419189.4A CN103157356B (en) | 2011-12-14 | 2011-12-14 | Sintering denitrification system and nitrogen oxide removal method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103157356A true CN103157356A (en) | 2013-06-19 |
| CN103157356B CN103157356B (en) | 2015-06-03 |
Family
ID=48581197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110419189.4A Active CN103157356B (en) | 2011-12-14 | 2011-12-14 | Sintering denitrification system and nitrogen oxide removal method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103157356B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107081063A (en) * | 2017-06-13 | 2017-08-22 | 武汉钢铁有限公司 | Sinter the sintering process denitrating system of flue gas recirculation |
| CN107238297A (en) * | 2017-06-13 | 2017-10-10 | 武汉科技大学 | Sinter flue gas sub-prime directed circulation and online denitrating system |
| CN107413193A (en) * | 2017-06-13 | 2017-12-01 | 武汉钢铁有限公司 | One kind sintering flue gas section cyclic flue dust catalytic denitration technique |
| CN107583430A (en) * | 2017-10-25 | 2018-01-16 | 南京爱碧洲环保科技有限公司 | One kind sintering denitrating flue gas processing unit and method |
| CN109341350A (en) * | 2018-10-09 | 2019-02-15 | 鞍钢股份有限公司 | A method of improving exhausting system of sintering machine stability |
| CN110118491A (en) * | 2019-05-17 | 2019-08-13 | 秦皇岛新特科技有限公司 | A kind of denitration process method and apparatus of sintering flue gas |
| CN110953894A (en) * | 2019-12-16 | 2020-04-03 | 北京中航泰达环保科技股份有限公司 | Sintering machine flue gas circulation purification and waste heat utilization system and method |
| WO2022252156A1 (en) * | 2021-06-02 | 2022-12-08 | 秦皇岛新特科技有限公司 | Sintering apparatus and sintering process production device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829481A (en) * | 2010-05-13 | 2010-09-15 | 宝钢工程技术集团有限公司 | Emission reduction system of sintered fume nitric oxide with low energy consumption and method thereof |
-
2011
- 2011-12-14 CN CN201110419189.4A patent/CN103157356B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829481A (en) * | 2010-05-13 | 2010-09-15 | 宝钢工程技术集团有限公司 | Emission reduction system of sintered fume nitric oxide with low energy consumption and method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107081063A (en) * | 2017-06-13 | 2017-08-22 | 武汉钢铁有限公司 | Sinter the sintering process denitrating system of flue gas recirculation |
| CN107238297A (en) * | 2017-06-13 | 2017-10-10 | 武汉科技大学 | Sinter flue gas sub-prime directed circulation and online denitrating system |
| CN107413193A (en) * | 2017-06-13 | 2017-12-01 | 武汉钢铁有限公司 | One kind sintering flue gas section cyclic flue dust catalytic denitration technique |
| CN107081063B (en) * | 2017-06-13 | 2020-06-02 | 武汉钢铁有限公司 | Sintering process denitration system with sintering flue gas circulation |
| CN107583430A (en) * | 2017-10-25 | 2018-01-16 | 南京爱碧洲环保科技有限公司 | One kind sintering denitrating flue gas processing unit and method |
| CN109341350A (en) * | 2018-10-09 | 2019-02-15 | 鞍钢股份有限公司 | A method of improving exhausting system of sintering machine stability |
| CN110118491A (en) * | 2019-05-17 | 2019-08-13 | 秦皇岛新特科技有限公司 | A kind of denitration process method and apparatus of sintering flue gas |
| CN110953894A (en) * | 2019-12-16 | 2020-04-03 | 北京中航泰达环保科技股份有限公司 | Sintering machine flue gas circulation purification and waste heat utilization system and method |
| WO2022252156A1 (en) * | 2021-06-02 | 2022-12-08 | 秦皇岛新特科技有限公司 | Sintering apparatus and sintering process production device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103157356B (en) | 2015-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103157356B (en) | Sintering denitrification system and nitrogen oxide removal method thereof | |
| CN102936651B (en) | A kind of method sintering simultaneous SO_2 and NO removal system and desulphurization denitration thereof | |
| CN103785290A (en) | Sintering and pelletizing flue gas desulfurization and denitrification coordinating management system and process | |
| CN105688566A (en) | Desulfurization and denitrification device and method for sintering flue gas | |
| CN104764340A (en) | Flue gas circulation system and method for sintering machine flue gas recirculation denitration | |
| CN108671751A (en) | A kind of chain grate-rotary kiln pelletizing equipment for denitrifying flue gas and application method | |
| CN107413193B (en) | Sintering flue gas zoned circulating smoke catalytic denitration process | |
| CN106969641A (en) | One kind sintering flue gas decomposes bioxin desulphurization denitration recovery waste heat system and method from combustion-supporting | |
| CN107115775B (en) | Iron ore sintering flue gas sectional enrichment self-heat exchange emission reduction SOxAnd NOxMethod of producing a composite material | |
| CN203816509U (en) | Desulfuration and denitration system for low temperature coke oven exhaust | |
| CN107131770A (en) | A kind of agglomeration for iron mine waste heat recovery collaboration emission reduction SOXAnd NOXMethod | |
| CN208177248U (en) | It is a kind of based on active carbon/coke coke oven flue gas system for desulfuration and denitration | |
| CN103463960A (en) | Desulfurization and purification method of flue gas desulfurization and purification system | |
| CN107349783B (en) | Sintering flue gas denitration process based on sintering flue gas circulation and flue gas catalysis | |
| CN103954140B (en) | A kind of sintering device flue gas low-temperature denitrifying system and method thereof | |
| CN107930396B (en) | Method for concentrated and efficient desulfurization and denitrification of sintering flue gas | |
| CN205102149U (en) | Multiple gas cleaning is demercuration device in coordination | |
| CN201832542U (en) | Selective flue gas desulfuration and denitration apparatus for sintering machines | |
| CN207996557U (en) | A kind of cement rotary kiln denitrification apparatus | |
| CN112642275A (en) | Organic waste pyrolysis, gasification, combustion, co-sintering and denitration integrated system and method | |
| CN111878835A (en) | Coupling process and system for carbon-containing solid waste combustion utilization and sintering flue gas purification treatment | |
| CN102393147B (en) | Comprehensive processing process for sintering smoke gas | |
| CN104748572A (en) | Oxidizing-absorbing type wet denitration system and method for smoke of sintering machine | |
| CN208742297U (en) | A kind of chain grate-rotary kiln pelletizing equipment for denitrifying flue gas | |
| CN204261560U (en) | A kind of belt type roasting machine pelletizing gas cleaning adsorption tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |