CN104759205B - A kind of high temperature air channel Benitration reactor and the method with its denitration - Google Patents
A kind of high temperature air channel Benitration reactor and the method with its denitration Download PDFInfo
- Publication number
- CN104759205B CN104759205B CN201510119267.7A CN201510119267A CN104759205B CN 104759205 B CN104759205 B CN 104759205B CN 201510119267 A CN201510119267 A CN 201510119267A CN 104759205 B CN104759205 B CN 104759205B
- Authority
- CN
- China
- Prior art keywords
- air channel
- high temperature
- temperature air
- benitration reactor
- 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.)
- Active
Links
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of high temperature air channel Benitration reactor and the method with its denitration, described high temperature air channel Benitration reactor is the snakelike tubular metal air channel of interior loading wire gauze, and its entrance is communicated with the NOx segregation apparatuss of flue gas, exports and communicated with burner hearth.NOx and CO (carbon monoxide converter) gas flow into snakelike tubular metal air channel, react under the catalytic action of 600 800 DEG C of wire gauzes, NOx is reduced, generate harmless nitrogen and carbon dioxide, the carbon monoxide not reacted completely sprays into burner hearth by ducting outlet, participates in hearth combustion.High temperature air channel Benitration reactor simple structure of the present invention, install additional conveniently, with low cost, with the NOx segregation apparatuss of flue gas with the use of efficient removals of the NOx in burner hearth in achievable flue gas, as carrier gas CO (carbon monoxide converter) gas can combustion (of oil) insitu be carbon dioxide, secondary pollution is avoided, iron wire is used as catalyst avirulence.Simultaneously can be with recovery section heat.
Description
Technical field
The present invention relates to a kind of high temperature air channel Benitration reactor and the method with its denitration, the NOx separation and concentrations with flue gas
Device is combined, and not only can realize nitrogen oxides near-zero release, it is also possible to avoids reducing agent discharge from producing secondary pollution, belongs to combustion
Flue-gas pollution reduction technological innovation field.
Background technology
Nitrogen oxides (NOx) are one of Air Pollutants, can form acid rain or acid mist is combined shape with Hydrocarbon
Into photochemical fog, damage the ozone layer.At present, more than 60% nitrogen oxides come from the flue gas of coal combustion generation.
On January 1st, 2012 implements《Fossil-fuel power plant atmospheric pollutant emission standard》(GB13223-2011) in, regulation is all
Newly-built fired power generating unit NO discharge capacity reaches 100mg/cm3.From the beginning of 1 day January in 2014, it is desirable to which all thermoelectricitys in key area put into operation
Unit NO x discharge capacitys reach 100mg/cm3, rather than the unit that key area was gone into operation for 2003 in the past reaches 200mg/cm3.Increasingly
Serious environmental pollution and strict discharge standard, it is desirable to which we must strive for the near-zero release of nitrogen oxides.
Catalytic reduction of NOx technology (SCR) has become at present apply in the world most, the most ripe and most fruitful one kind
Gas denitrifying technology.The technology is as reducing agent using ammonia, sprays into flue and is sufficiently mixed with flue gas, then flows through loading SCR and urges
In the reactor of agent, in the presence of catalyst, in flue gas, NOx is reduced agent ammonia and is reduced to harmless nitrogen.NH3- SCR skills
Art denitration efficiency is high, mature and reliable, strong adaptability, is particularly suitable for that ature of coal is changeable, unit load is changed frequently and to air matter
Amount requires to use on the coal unit in more sensitive region.But ammonia-method denitration there is also some problems：Penetrating ammonia is adopted for also
Former agent, can produce corrosion to pipeline, and control is improper to make the escaping of ammonia produce secondary pollution, and the ammonium salt granule of generation can block downstream
Equipment, while ammonia processed is relatively costly.And SCR catalyst application more for noble metal, metal-oxide etc., relatively costly and make
Make complicated.
Iron wire can make carbon monoxide generate nitrogen and carbon dioxide with NOx reactions when temperature is 600 DEG C～800 DEG C.Ferrum
Used as catalyst, CO can be obtained by coal gasification or pyrolysis of coal silk as denitrification reducing agent, CO, preparation side for coal fired power plant
Just, and with low cost；Iron wire is compared with noble metal and metal-oxide, it is easy to obtain, and economy is high.But iron wire is catalyst
When, easily it is oxidized by oxygen, loses catalytic effect, therefore this mode is infeasible in conventional flue gas.
Content of the invention
It is an object of the invention to provide a kind of high temperature air channel Benitration reactor and the method with its denitration, reactor and cigarette
The NOx separation and concentrations device combination of gas, realizes NOx near-zero releases, is reducing agent from CO, and iron wire is catalyst, with low cost
And avoid producing secondary pollution.
The technical solution used in the present invention is：
A kind of high temperature air channel Benitration reactor, its are arranged in the boiler flue communicated with burner hearth, described high temperature air channel
Benitration reactor is the snakelike tubular metal air channel of interior loading wire gauze, and its entrance communicated with the NOx segregation apparatuss of flue gas, outlet
Communicate with burner hearth.
Described wire gauze is arranged for multilamellar.Wire gauze is in pipeline per interlayer every 20-60mm, iron wire diameter 0.2-
1.5mm, mesh spaces 1.5-8mm.
Micro- fin can be added in the pipeline in described snakelike tubular metal air channel to process, to strengthen the heat exchange of gas in air channel.
The pipe range in described snakelike tubular metal air channel by gas in air channel flow and the time of staying determine, certain
Under flow, the time of staying is set as the 5-10 seconds.
The method that denitration is carried out using above-mentioned high temperature air channel Benitration reactor, NOx and CO (carbon monoxide converter) gas flow into snakelike gold
Category tubulose air channel, reacts under the catalytic action of 600-800 DEG C of wire gauze, NOx is reduced, and generates harmless nitrogen and two
Carbonoxide, the carbon monoxide not reacted completely spray into burner hearth by ducting outlet, participate in hearth combustion, generate harmless titanium dioxide
Carbon.
1.5-3 times for NOx of the volume fraction of described NOx and CO (carbon monoxide converter) gas, wherein CO.It is combustible gas through cigarette
The NOx segregation apparatuss of gas are isolated, and combustible gas is NOx carrier gas, and main component is carbon monoxide, can be by by coal gasification or coal
Pyrolytic technique is voluntarily prepared by coal fired power plant.
The NOx segregation apparatuss of flue gas, can adopt swinging Benitration reactor (application number 2014101535846) or empty pre- de-
One reactor according of nitre (application number 2014102467723) or other NOx adsorption separation devices.The principle of such device is employing
NOx adsorbent absorption flue gas in NOx, then with CO (carbon monoxide converter) gas be desorbed adsorbent surface NOx, realize NOx from flue gas
In separation and enrichment.
The present invention combines the NOx segregation apparatuss of flue gas, realize NOx and carbon monoxide blending and with flue gas oxygen point
From, gained gas under the catalytic action of the high temperature and wire gauze of flue gas, through certain time of staying, can achieve NOx with
The reaction of carbon monoxide, realizes the high efficiency, low cost removing of NOx.
High temperature air channel Benitration reactor simple structure of the present invention, installs additional conveniently, with low cost, with NOx separation and concentration devices
With the use of can achieve flue gas in efficient removals of the NOx in burner hearth, as carrier gas CO (carbon monoxide converter) gas can combustion (of oil) insitu be
Carbon dioxide, it is to avoid secondary pollution, iron wire is used as catalyst avirulence.Simultaneously can be with recovery section heat.
Description of the drawings
Fig. 1 is high temperature air channel Benitration reactor structural representation of the present invention；Wherein, a is structure of reactor figure；B is reaction
Device air channel generalized section.
Fig. 2 is that high temperature air channel Benitration reactor arranges schematic diagram.
Wherein, 1 is CO gases；2 is CO+NOx gases；3 is the CO gases not reacted completely；4 is that the NOx of flue gas separates dress
Put；5 is high temperature air channel Benitration reactor；6 is burner hearth.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
A kind of high temperature air channel Benitration reactor, its are arranged in the boiler flue communicated with burner hearth 6, described high temperature air channel
Benitration reactor is the snakelike tubular metal air channel of interior loading wire gauze, and its entrance communicated with the NOx segregation apparatuss 4 of flue gas, gone out
Mouth is communicated with burner hearth 6.
Multilamellar wire gauze is loaded in snakelike tubular metal air channel, and also plus micro- fin is to strengthen exchanging heat, regional temperature is 600 DEG C
Near～800 DEG C, it is ensured that reducing agent and NO under iron wire catalytic actionXReaction is carried out.Benitration reactor 5 import in high temperature air channel is
CO+NOx gases 2, its NOx segregation apparatus 4 that originates as downstream fume gas, the NOx segregation apparatuss of flue gas can adopt swinging denitration
Reactor (application number 2014101535846) or other NOx adsorption separation devices.4 import of NOx segregation apparatuss of flue gas is CO gas
Body 1, the CO volume fractions as carrier gas are 1.5-3 times of NOx, can by by coal gasification or pyrolysis of coal technology by coal fired power plant oneself
Prepared by row, with low cost.The CO gases 3 that high temperature air channel Benitration reactor 5 does not react completely spray into burner hearth 6 and burn, it is to avoid secondary
Pollution.
High temperature air channel Benitration reactor is combined with NOx segregation apparatuss, adopts CO for reducing agent.Iron wire is catalyst, realizes
Efficient removals of the NOx in burner hearth in flue gas, and with low cost, secondary pollution is not produced, significant.
Claims (6)
1. the method for carrying out denitration using high temperature air channel Benitration reactor, is characterized in that, NOxFlow into CO (carbon monoxide converter) gas snakelike
Tubular metal air channel, reacts under the catalytic action of 600-800 DEG C of wire gauze, by NOxReduction, generate harmless nitrogen and
Carbon dioxide, the carbon monoxide not reacted completely spray into burner hearth by ducting outlet, participate in hearth combustion, generate harmless titanium dioxide
Carbon；The NOxThe processing mode flowed into before snakelike tubular metal air channel with CO (carbon monoxide converter) gas is to adopt NOxAdsorbent adsorbs
NO in flue gasx, then the NO for being desorbed adsorbent surface with CO (carbon monoxide converter) gasx；
Described high temperature air channel Benitration reactor is arranged in the boiler flue communicated with burner hearth, and described high temperature air channel denitration is anti-
Answer the NO of the snakelike tubular metal air channel that device is interior loading wire gauze, its entrance and flue gasxSegregation apparatuss are communicated, and are exported and burner hearth
Communicate.
2. the method that high temperature air channel according to claim 1 Benitration reactor carries out denitration, is characterized in that, described NOxWith
The volume fraction of CO (carbon monoxide converter) gas, wherein CO is NOx1.5-3 times.
3. the method that high temperature air channel according to claim 1 Benitration reactor carries out denitration, is characterized in that, described iron wire
Net is arranged for multilamellar.
4. the method that high temperature air channel according to claim 3 Benitration reactor carries out denitration, is characterized in that, wire gauze is in pipe
Per interlayer every 20-60mm, iron wire diameter 0.2-1.5mm, mesh spaces 1.5-8mm in road.
5. the method that high temperature air channel according to claim 1 Benitration reactor carries out denitration, is characterized in that, described is snakelike
Micro- fin is added to process in the pipeline in tubular metal air channel.
6. the method that high temperature air channel according to claim 1 Benitration reactor carries out denitration, is characterized in that, described is snakelike
The pipe range in tubular metal air channel by gas in air channel flow and the time of staying determine that the time of staying is set as the 5-10 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119267.7A CN104759205B (en) | 2015-03-18 | 2015-03-18 | A kind of high temperature air channel Benitration reactor and the method with its denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119267.7A CN104759205B (en) | 2015-03-18 | 2015-03-18 | A kind of high temperature air channel Benitration reactor and the method with its denitration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104759205A CN104759205A (en) | 2015-07-08 |
| CN104759205B true CN104759205B (en) | 2017-03-15 |
Family
ID=53641495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510119267.7A Active CN104759205B (en) | 2015-03-18 | 2015-03-18 | A kind of high temperature air channel Benitration reactor and the method with its denitration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104759205B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570004A (en) * | 2017-06-23 | 2018-01-12 | 清华大学 | A kind of method that NO is discharged in reduction boiler smoke |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398283B (en) * | 2017-06-23 | 2021-02-26 | 清华大学 | Catalyst metal heating surface for reducing NOx content in flue gas and preparation method thereof |
| CN107952360A (en) * | 2017-12-15 | 2018-04-24 | 江苏龙净科杰催化剂再生有限公司 | Iron powder denitrating technique |
| CN108905556A (en) * | 2018-07-13 | 2018-11-30 | 山东大学 | A kind of integral process and equipment of denitration and CO generation |
| CN112426877B (en) * | 2020-09-24 | 2022-07-19 | 宣城市楷昂化工有限公司 | Method and equipment for treating nitrogen oxide waste gas in sodium metabisulfite production |
| CN113413744B (en) * | 2021-06-30 | 2022-07-05 | 山东省科学院能源研究所 | Sleeve type ammonia and CO combined denitration system device, method and application |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE793696A (en) * | 1972-01-06 | 1973-07-05 | Aqua Chem Inc | Air pollution control system - to reduce content of oxides of nitrogen in combustion gases |
| CN86104137B (en) * | 1986-12-15 | 1988-03-02 | 沈善明 | Moving bed active carbon adsorption-desorption device |
| US5198201A (en) * | 1988-03-08 | 1993-03-30 | Johnson Arthur F | Removal of sulphur and nitrogen oxides from flue gases |
| JP3885120B2 (en) * | 2001-01-29 | 2007-02-21 | 秀雄 桑原 | Car exhaust gas deodorization dust collector |
| JP5541951B2 (en) * | 2010-03-19 | 2014-07-09 | メタウォーター株式会社 | N2O removing device and method for removing N2O in exhaust gas |
| CN102240505A (en) * | 2011-07-13 | 2011-11-16 | 东华大学 | Method for reducing NO by using iron catalyst |
| CN202868648U (en) * | 2012-10-24 | 2013-04-10 | 中国石油化工股份有限公司 | Wave type carbon monoxide (CO) boiler with denitration function |
| CN203635074U (en) * | 2013-11-22 | 2014-06-11 | 郑州登峰熔料有限公司 | Catalyst layer for boiler denitration |
| CN203899454U (en) * | 2014-05-29 | 2014-10-29 | 华电高科（高碑店）环保技术有限公司 | Stamping resistant catalyst box |
| CN104128091A (en) * | 2014-08-18 | 2014-11-05 | 上海迪扬过滤系统有限公司 | Filter cartridge with denitration function and denitration method |
-
2015
- 2015-03-18 CN CN201510119267.7A patent/CN104759205B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570004A (en) * | 2017-06-23 | 2018-01-12 | 清华大学 | A kind of method that NO is discharged in reduction boiler smoke |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104759205A (en) | 2015-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104759205B (en) | A kind of high temperature air channel Benitration reactor and the method with its denitration | |
| CN104888591B (en) | Boiler flue gas denitration purification system and boiler flue gas denitration purification method | |
| CN105251326A (en) | Reduction and oxidation combined denitration system and denitration method thereof | |
| CN203437036U (en) | Sintering fume desulfurization and denitrification device | |
| CN109045958A (en) | The equipment for denitrifying flue gas and method of urea and dioxygen water mixed liquid combination SNCR | |
| CN102936651A (en) | Sintering simultaneous desulfurization and denitrification system and desulfurization and denitrification method thereof | |
| CN104941410B (en) | Flue gas desulfurization and denitrification integrated method and device based on two-step oxidation process of active molecules O3 at low temperature | |
| CN102989282A (en) | Method and device for collaborative removal of mercury in flue gas | |
| CN104084024B (en) | A kind of method of denitration of boiler smoke | |
| CN103463978A (en) | Device and method for smoke simultaneous desulfurization and denitrification based on hydrogen peroxide catalytic oxidation | |
| CN112403232A (en) | Process method and device for cooperatively purifying multiple pollutants in flue gas | |
| CN210522213U (en) | Flue gas desulfurization and denitrification device | |
| CN205073858U (en) | DeNOx systems is united with oxidation to reduction | |
| CN109126431A (en) | The device and method of liquid phase adsorption formula oxidation-reduction method denitrating flue gas | |
| CN109999631A (en) | A kind of gas fired-boiler takes off NO except COxIntegrated purifying method and apparatus | |
| CN211753933U (en) | Carbon monoxide and nitrogen oxide co-processing system | |
| CN109316941A (en) | The equipment for denitrifying flue gas and its method of denitration of ozone combination urea combination SNCR | |
| CN106110851B (en) | A kind of sintering, pelletizing equipment for denitrifying flue gas and method | |
| CN105457464B (en) | A kind of technique of sintering flue gas desulfurization denitration | |
| CN205760625U (en) | The smoke processing system of simultaneous SO_2 and NO removal | |
| CN207493496U (en) | The experiment test system of NO and Hg in catalysis ozone simultaneous oxidation flue gas | |
| CN202962241U (en) | Device for synergistically removing flue gas mercury | |
| CN110026082A (en) | A kind of ozone injects the kiln gas denitrification apparatus and method of auxiliary SCR before ammonia | |
| CN110180348A (en) | A kind of flue gas nitrogen oxide oxidation unit and technique | |
| CN214635307U (en) | Ultra-clean discharging equipment of many pollutants of heat recovery coke oven flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |