CN202452507U - Equipment used for creating oxygen-enriched combustion environment - Google Patents
Equipment used for creating oxygen-enriched combustion environment Download PDFInfo
- Publication number
- CN202452507U CN202452507U CN201120559904XU CN201120559904U CN202452507U CN 202452507 U CN202452507 U CN 202452507U CN 201120559904X U CN201120559904X U CN 201120559904XU CN 201120559904 U CN201120559904 U CN 201120559904U CN 202452507 U CN202452507 U CN 202452507U
- Authority
- CN
- China
- Prior art keywords
- oxygen
- additive
- create
- equipment
- airduct road
- 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.)
- Expired - Lifetime
Links
Images
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses equipment used for creating oxygen enrichment combustion environment. The equipment comprises a hearth, a primary air pipeline, a secondary air pipeline, a sofa air pipeline and an addition agent storage bin, wherein the addition agent storage bin can provide an addition agent for the hearth, and the addition agent can release oxygen when being heated. According to the technical scheme, the structure is simple, and an oxygen enrichment combustion method adopting the addition agent can be well realized.
Description
Technical field
The utility model belongs to the thermal boiler field, relates to a kind of equipment that is used to create the boiler fuel combustion method of oxygen-enriched environment.
Background technology
Traditional boiler combustion method, the oxidant and the combustion adjuvant that generally adopt air to act as a fuel, fuel and air mix the back and get into the burner hearth burning.But airborne oxygen only accounts for 21% ratio (volume ratio), and other 79% are nitrogen and other gases.In whole combustion process, oxygen and fuel generation chemical reaction produce a large amount of heats, nitrogen not with fuel generation chemical reaction, the whole process of boiler combustion has absorbed a large amount of heats but nitrogen is flowed through, and discharges as tail gas at last, causes the loss of heat.
Traditional boiler combustion method, fuel burns in air, though there are a large amount of air to help burning, along with the consumption of oxygen; Fuel burns in " oxygen deprivation " environment, and it is insufficient to burn, not thorough; The efficiency of combustion of fuel is low, and the combustible content in the lime-ash is high, causes the economic loss of fuel.
To the problem that the conventional boiler combustion method exists, the scientific and technical personnel of association area propose " oxygen enrichment " environment combustion method, promptly through replenishing purity oxygen, improve the oxygen content in the combustion air, send into boiler auxiliary combustion; Perhaps through purity oxygen and carbon dioxide or gas fume after burning blending according to a certain percentage, form and be rich in the higher mist of oxygen proportion, it is combustion-supporting to send into burner hearth again.
Create the method for oxygen-enriched environment through replenishing purity oxygen; Need dispose a whole set of oxygen generation system and oxygen enriching system in force; The construction investment of whole system is high, and output is few, and for example existing oxygenerating technology still can not provide the boiler of power plant needed purity oxygen that burns on a large scale.The technical difficulty of making oxygen and oxygen enriching system simultaneously is big, has a big risk, and for example the liquid oxygen gas tank in the system belongs to high-risk equipment, must manage by major hazard source.And employing purity oxygen and carbon dioxide or gas fume after burning blending; Send into boiler again and create the method for oxygen-enriched environment; Still there are not national standard and corresponding mature technology; Newly constructed boiler does not have relevant design standard, and having built up boiler needs to transform as adopting this method, does not also have concrete remodeling method at present.
Therefore; A kind of boiler combustion method and equipment thereof of simple and reliable, economical and practical creation oxygen-enriched environment are proposed; Promptly can create the environment of oxygen-enriched combusting, again can be simple, the oxygen-enriched combusting method of existing boiler not being transformed significantly seems very important.
The utility model content
The utility model technical problem to be solved provides a kind of combustion apparatus, can be used in the combustion method of creating oxygen-enriched environment.
The boiler combustion method of creating oxygen-enriched environment is during boiler combustion, in burner hearth, to add the additive that chance heat chemical reaction can take place, can discharge oxygen continuously.The composition of this additive is chlorate or permanganate or nitrate or its combination, and the composition of additive also can be a hydrogenperoxide steam generator.For example be rich in the mixture of potassium chlorate (molecular formula :) and manganese dioxide (molecular formula :); For example certain density hydrogen peroxide (molecular formula :) solution; For example be rich in the material of potassium permanganate (molecular formula :) again; For example be rich in the material of potassium nitrate (molecular formula :) again.Fuel and additive deliver into burner hearth by air respectively, and inner at burner hearth, additive and fuel freely mix.Fuel and additive deliver into burner hearth by air after mixing, and additive is the mixture or the liquefied mixture of granular material or granular material.This creates the boiler combustion method of oxygen-enriched environment, can make oxygen-enriched environment, in boiler, creates the oxygen-enriched combusting district, and enhanced fuel is in the burning in oxygen-enriched combusting district.
For solving the problems of the technologies described above; For the boiler combustion method of creating oxygen-enriched environment provides combustion apparatus; The technical scheme of the utility model is: a kind of equipment that is used to create the oxygen-enriched combusting environment; Comprise burner hearth, airduct road, secondary wind pipeline, also comprise the additive warehouse that in burner hearth, to send into additive, but said additive is met the heat release of oxygen.This technical scheme is simple in structure, can realize adopting the oxygen-enriched combusting method of additive well.
The additive warehouse is installed on airduct road, secondary wind pipeline, the OFA airduct road, can all install simultaneously, also can only install one, and any one is connected in promptly on additive warehouse and airduct road, secondary wind pipeline, the OFA airduct road.
On an airduct road, plasma pulverized coal ignition burner is installed, the additive warehouse can be installed in the plasma pulverized coal ignition burner.
Little oil mass start-up burner is installed on an airduct road, and the additive warehouse can be installed in little oil mass start-up burner.
On the additive warehouse valve is installed, can controls the injected volume of additive.
OFA airduct road (OVER FIRE AIR after-flame wind) can be SOFA (SEPERATED OVER FIRE AIR separates after-flame wind) airduct road or COFA (the compact after-flame wind of CLOSE OVER FIRE AIR) airduct road.
Through throwing in the combustion method of additive, in boiler, create oxygen-enriched environment, the burning of enhanced fuel has improved the efficient of fuel combustion, has reduced the mechanical loss and the chemical loss of fuel, has improved the economy of fuel, and this method is simple and reliable, and is convenient and easy.The utility model is simple; For oxygen-enriched combusting method provides feasible equipment, in practical implementation, need not transform existing boiler, need not build the whole series system oxygen and the oxygen supply device that comprise the liquid oxygen gas tank; Reduce investment, reduced danger.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further to specify:
Fig. 1 additive is sent into the boiler sketch map through a wind;
Fig. 2 additive is sent into the boiler sketch map through secondary wind;
Fig. 3 additive is sent into the boiler sketch map through sofa wind;
Fig. 4 additive is sent into the boiler sketch map;
Fig. 5 boiler adopts plasma ignition to implement illustration;
When adopting tiny-oil ignition, implements in Fig. 6 boiler illustration.
The specific embodiment
Specify the utility model below in conjunction with instance.
Embodiment 1
With reference to Fig. 1; On airduct road of boiler, increase an additive warehouse 1; Additive is the compounding substances (manganese dioxide is catalyst) that is rich in potassium chlorate and manganese dioxide, to different coals and ature of coal, through changing the aperture of valve 3; In a wind breeze airflow, be blended into additive, the amount of additive is obtained by prior test and calculating.A wind breeze airflow that is mixed with additive sprays into burner hearth 2, and additive receives the furnace flame heating, and in the zone that breeze airflow is flowed through; Discharge oxygen continuously, the oxygen that discharges is diffused into the zone of being flowed through, increased should the zone oxygen concentration; Createed oxygen-enriched environment, pulverized coal particle burns in the environment of oxygen enrichment, and the probability that fuel molecule touches oxygen molecule increases greatly; The probability that chemical reaction takes place increases, and has improved the burn-off rate of coal dust, has reduced economic loss.
In the present embodiment, fuel is Yangquan anthracite, the As-received composition of coal: carbon 69.01%, hydrogen 2.89%, oxygen 2.36%, nitrogen 0.99%, sulphur 0.76%, ash content 18.99%, moisture 5.0%.The required theoretical amount of oxygen of 1Kg fuel completing combustion is 2.0555kg/kg, and the required theoretical air requirement of fuel completing combustion is 8.8556kg/kg.Actual air is measured 1.2 times of theoretical air requirement; Being set at 1.5 times according to chemical oxygen amount ratio calculates; The amount of oxygen that additive discharges is 0.3 times of theoretical amount of oxygen; Be that the amount of oxygen that additive discharges is 0.61665kg/kg, calculating the potassium chlorate injected volume by chemical equation is 1.5673kg/kg.
Embodiment 2
With reference to Fig. 2, the difference of present embodiment and embodiment 1 is, on the boiler secondary air pipeline, increases an additive warehouse 1, and additive is the material that is rich in potassium permanganate, and additive is carried by the secondary wind air-flow and gets into burner hearth 2.In like manner, additive discharges oxygen continuously under the heat effect of furnace flame, in boiler 2, create the environment of oxygen enrichment, the burning of enhanced fuel.
In the present embodiment, fuel is Yangquan anthracite, the As-received composition of coal: carbon 69.01%, hydrogen 2.89%, oxygen 2.36%, nitrogen 0.99%, sulphur 0.76%, ash content 18.99%, moisture 5.0%.The required theoretical amount of oxygen of fuel completing combustion is 2.0555kg/kg, and the required theoretical air requirement of fuel completing combustion is 8.8556kg/kg.Actual air is measured 1.2 times of theoretical air requirement; Being set at 1.3 times according to chemical oxygen amount ratio calculates; The amount of oxygen that additive discharges is 0.1 times of theoretical amount of oxygen; Be that the amount of oxygen that additive discharges is 0.20555kg/kg, calculating the potassium permanganate injected volume by chemical equation is 2.0298kg/kg.
Embodiment 3
With reference to Fig. 3, the difference of present embodiment and embodiment 1 is, on boiler sofa airduct road, increases an additive warehouse 1, and additive is carried by sofa general mood stream and gets into burner hearth 2.
In the present embodiment, fuel is Yangquan anthracite, the As-received composition of coal: carbon 69.01%, hydrogen 2.89%, oxygen 2.36%, nitrogen 0.99%, sulphur 0.76%, ash content 18.99%, moisture 5.0%.Additive is the material that is rich in potassium chlorate.The required theoretical amount of oxygen of fuel completing combustion is 2.0555kg/kg, and the required theoretical air requirement of fuel completing combustion is 8.8556kg/kg.Actual air is measured theoretical air requirement; Being set at 1.2 times according to chemical oxygen amount ratio calculates; The amount of oxygen that additive discharges is 0.2 times of theoretical amount of oxygen, i.e. the amount of oxygen of additive release is 0.4111kg/kg, and calculating the potassium chlorate injected volume by chemical equation is 1.0449kg/kg.
Embodiment 4
With reference to Fig. 4; The difference of present embodiment and embodiment 1 is; On an airduct road, secondary wind pipeline and the sofa airduct road of boiler, all increase an additive warehouse 1, carry amount through above-mentioned airduct road into the additive of burner hearth through the aperture change of by-pass valve control 3, thus the degree of enrichment of zones of different in the control burner hearth; And then the combustion intensity of the interior zones of different of control burner hearth, guarantee boiler safety.
In the present embodiment, fuel is Yangquan anthracite, the As-received composition of coal: carbon 69.01%, hydrogen 2.89%, oxygen 2.36%, nitrogen 0.99%, sulphur 0.76%, ash content 18.99%, moisture 5.0%.Additive is the material that is rich in potassium chlorate.The required theoretical amount of oxygen of fuel completing combustion is 2.0555kg/kg, and the required theoretical air requirement of fuel completing combustion is 8.8556kg/kg.Actual air is measured theoretical air requirement; Being set at 1.2 times according to chemical oxygen amount ratio calculates; The amount of oxygen that additive discharges is 0.2 times of theoretical amount of oxygen, i.e. the amount of oxygen of additive release is 0.4111kg/kg, and calculating the potassium chlorate injected volume by chemical equation is 1.0449kg/kg.Be the degree of enrichment of zones of different in the control burner hearth, the potassium chlorate of sending into burner hearth by airduct road is 0.7kg/kg, and the potassium chlorate of being sent into burner hearth by the secondary wind pipeline is 0.3kg/kg, and the potassium chlorate of being sent into burner hearth by sofa airduct road is 0.0449kg/kg.
Embodiment 5
With reference to Fig. 5, for adopting the plasma pulverized coal ignition burner of oxygen-enriched combusting method, comprise plasma generator 1 and burner 2, a sleeve 4 is arranged in the burner 2.Additive pipeline 3 openings are positioned at and get into sleeve 4.After plasma generator 1 work, sleeve 4 in, form the localized hyperthermia district, additive gets in the sleeves 4 through pipeline 3, and with getting into sleeve 4 interior a part of coal dust Gas Mixing in Cross flow.Additive receives heat, forms local oxygen-rich area at the spout and the follow-up adjacent area of sleeve 4, strengthens the burning of coal dust.
In the present embodiment, fuel type and additive types are with embodiment 1, and the computational methods of additive injected volume are that additive is sent into burner hearth through plasma pulverized coal ignition burner with embodiment 1 in embodiment 1 difference.
Embodiment 6
With reference to Fig. 6, for having adopted little oil mass start-up burner of oxygen-enriched combusting method, the difference of present embodiment and embodiment 5 is that the igniting thermal source is the tiny-oil ignition oil gun, and the tiny-oil ignition oil gun radially inserts in the sleeve 4, and in sleeve 4, forms the localized hyperthermia district.Additive gets in the sleeves 4 through pipeline 3, and with a part of coal dust Gas Mixing in Cross flow that gets in the sleeve 4.Additive receives heat, forms local oxygen-rich area at the spout and the follow-up adjacent area of sleeve 4, strengthens the burning of coal dust.
In the present embodiment, fuel type and additive types are with embodiment 1, and the computational methods of additive injected volume are that additive is sent into burner hearth through little oil mass start-up burner in embodiment 5 differences with embodiment 1.
Claims (9)
1. equipment that is used to create the oxygen-enriched combusting environment comprises burner hearth, airduct road, secondary wind pipeline, it is characterized in that, also comprise the additive warehouse that can in burner hearth, send into additive, but said additive is met the heat release of oxygen.
2. the equipment that is used to create the oxygen-enriched combusting environment according to claim 1 is characterized in that, said additive warehouse is installed on airduct road.
3. the equipment that is used to create the oxygen-enriched combusting environment according to claim 1 is characterized in that, said additive warehouse is installed on the secondary wind pipeline.
4. the equipment that is used to create the oxygen-enriched combusting environment according to claim 1 is characterized in that, also comprises OFA airduct road, and said additive warehouse is installed on the OFA airduct road.
5. the equipment that is used to create the oxygen-enriched combusting environment according to claim 1 is characterized in that, on an airduct road, plasma pulverized coal ignition burner is installed, and said additive warehouse inlet is installed in the plasma pulverized coal ignition burner.
6. the equipment that is used to create the oxygen-enriched combusting environment according to claim 1 is characterized in that, little oil mass start-up burner is installed on an airduct road, and said additive warehouse inlet is installed in little oil mass start-up burner.
7. the equipment that is used to create the oxygen-enriched combusting environment according to claim 1 is characterized in that, a said airduct road, secondary wind pipeline, OFA airduct respectively are equipped with the additive warehouse on the road.
8. according to each described equipment that is used to create the oxygen-enriched combusting environment of claim 1 to 7, it is characterized in that, on the said additive warehouse valve is installed.
9. the equipment that is used to create the oxygen-enriched combusting environment according to claim 1 is characterized in that, OFA airduct road is SOFA airduct road or COFA airduct road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120559904XU CN202452507U (en) | 2011-12-28 | 2011-12-28 | Equipment used for creating oxygen-enriched combustion environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120559904XU CN202452507U (en) | 2011-12-28 | 2011-12-28 | Equipment used for creating oxygen-enriched combustion environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202452507U true CN202452507U (en) | 2012-09-26 |
Family
ID=46868369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120559904XU Expired - Lifetime CN202452507U (en) | 2011-12-28 | 2011-12-28 | Equipment used for creating oxygen-enriched combustion environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202452507U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832933A (en) * | 2015-04-22 | 2015-08-12 | 中国神华能源股份有限公司 | Additive-adding device for boiler and boiler |
-
2011
- 2011-12-28 CN CN201120559904XU patent/CN202452507U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832933A (en) * | 2015-04-22 | 2015-08-12 | 中国神华能源股份有限公司 | Additive-adding device for boiler and boiler |
| CN104832933B (en) * | 2015-04-22 | 2018-01-02 | 中国神华能源股份有限公司 | Boiler additives adding set and boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hosseini et al. | Development of biogas combustion in combined heat and power generation | |
| CN204535076U (en) | A kind of heat smoke producer of lower heat of combustion coal pyrolysis gas | |
| CN102777898B (en) | A kind of special gasification burner for biological liquid fuel and combustion method | |
| Zhu et al. | Experimental investigation of NOx emissions during pulverized char combustion in oxygen-enriched air preheated with a circulating fluidized bed | |
| CN104315502A (en) | Biomass low-temperature pre-burning low-volatile inferior coal low-NOx combustion device | |
| Zhang et al. | Industrial scale testing on the combustion and NOx emission characteristics of ammonia cofiring in a 40 MWth coal-fired boiler | |
| Wang et al. | Effect of ammonia on the characteristics of coal combustion | |
| CN101886815B (en) | Method for feeding pulverized coal in power station pulverized-coal fired boiler | |
| CN102444899A (en) | Boiler combustion method capable of creating aerobic condition | |
| CN201526966U (en) | Special burner used for circular internal combustion type blast-furnace gas power generation boiler and provided with cone fluidic device | |
| CN204187609U (en) | The low NO of a kind of living beings low temperature pre-burning low volatile low-grade coal xburner | |
| CN203717127U (en) | Gas turbine generation system | |
| CN202452507U (en) | Equipment used for creating oxygen-enriched combustion environment | |
| WO2011060688A1 (en) | Method for replenishing fuel with high-temperature flue gas in upgrading low-rank coal | |
| CN203744238U (en) | Tangential and direct flows combined combustion stabilizing and heat storage combusting device suitable for low-calorific-value fuel gas | |
| CN101713538A (en) | Combustion method of low-pressure and low-concentration methane gas and device | |
| CN202835350U (en) | Novel biology liquid fuel combustor | |
| CN204901743U (en) | Coal cinder gratefiring spouts with biomass gasification and fires compound combustion system of chain furnace that combines together | |
| CN106545853A (en) | It is a kind of that there is low NOXAnd the low calorific value coal gasification gas burner of steady combustion function | |
| CN103670712B (en) | A kind of gas turbine generating system | |
| CN102798129A (en) | Efficient thermal oxidation furnace for low afterburning-amount smoke constant-speed grading reaction | |
| CN202521630U (en) | Air supply system of biomass particle burner | |
| CN105649771A (en) | Technique and method for achieving power generation by means of explosion of extremely-low-concentration gas | |
| CN201539862U (en) | Combustion device of a low pressure low concentration methane gas | |
| CN110006036A (en) | The well-mixed dust explosion boiler of chemically correct fuel is pressed under low-temp low-pressure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |
|
| CX01 | Expiry of patent term |