CN102607051A - Oxygen injector - Google Patents
Oxygen injector Download PDFInfo
- Publication number
- CN102607051A CN102607051A CN2012100558409A CN201210055840A CN102607051A CN 102607051 A CN102607051 A CN 102607051A CN 2012100558409 A CN2012100558409 A CN 2012100558409A CN 201210055840 A CN201210055840 A CN 201210055840A CN 102607051 A CN102607051 A CN 102607051A
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- China
- Prior art keywords
- oxygen
- flange
- smoke
- shower nozzle
- pipe
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- Y02E20/344—
Abstract
The invention discloses an oxygen injector, which comprises an oxygen direct-flow pipe, an oxygen guide pipe, a nozzle, a first flange and a second flange. The oxygen injector is characterized in that the oxygen guide pipe is a bent pipe, one end of the oxygen guide pipe is connected with the oxygen direct-flow pipe, the other end of the oxygen guide pipe is inserted into a smoke and air duct through a lateral hole on the smoke and air duct and is connected with the nozzle, the first flange is connected with the oxygen direct-flow pipe, the second flange is connected with the lateral hole on the smoke and air duct, and the first flange is coaxially connected with the second flange, so that the oxygen direct-flow pipe and the lateral hole of the smoke and air duct are concentric while an outlet of the oxygen guide pipe and the smoke and air duct are concentric. Oxygen is jetted to the center of the smoke and air duct, so that oxygen and smoke can be quickly and evenly mixed.
Description
Technical field
The present invention relates to a kind of oxygen injector, specifically is the device that in oxygen-enriched combustion boiler, is used for oxygen and flue gas premix.
Background technology
In China's coal fired power generation technology, a large amount of dischargings of carbon dioxide and nitrogen oxide have caused very big threat to environment.And oxygen-enriched combusting by feat of its zero-emission and with the advantage of the good connection of conventional air combustion technology, become the focus of domestic and international research.Oxygen-enriched combustion technology for combustion air, adopts flue gas recirculation to regulate rate-of flow and heat-transfer character in the burner hearth with highly purified oxo simultaneously, can obtain the CO that is rich in of high volumetric concentration
2Flue gas.And how the mixing effectively and uniformly of the flue gas in pure oxygen and the flue is had very big influence to effect of combustion; The uneven mixing of oxygen and flue gas can cause burner hearth irrational localized hyperthermia to occur; Influence coal dust after-flame degree, make burning can not stablize more and carry out fully.
Summary of the invention
The present invention provides a kind of oxygen injector, can be injected into pure oxygen in the flue gas of flue, and guarantee that oxygen and flue gas can mix effectively and uniformly, have avoided because oxygen and the inhomogeneous combustion instability that causes of flue gas premix.
A kind of oxygen injector of the present invention, it comprises oxygen DC tube, oxygen guide pipe, shower nozzle and first, second flange; It is characterized in that: the oxygen guide pipe is a bend pipe, and an end connects the oxygen DC tube, and the other end inserts in the smoke wind pipe through the smoke wind pipe side opening, and is connected with shower nozzle; First flange is connected with the oxygen DC tube, and second flange is connected with the smoke wind pipe side opening, and the coaxial connection of first, second flange makes oxygen DC tube and smoke wind pipe side opening concentric, and the outlet and the smoke wind pipe of oxygen guide pipe are concentric.
As the improvement of technique scheme, said smoke wind pipe side opening is perpendicular to the hole of side wall surface.
As the further improvement of technique scheme, said first, second flange outer diameter is identical, and the bolt hole position of installation is identical with size, and internal diameter is different.
As the further improvement of technique scheme, shower nozzle is the changeable type shower nozzle.
Oxygen and flue gas when the present invention has overcome oxygen-enriched combusting be owing to mix the inhomogeneous localized hyperthermia that causes and the lower problem of coal dust after-flame degree, guaranteed oxygen and flue gas fast, evenly mixing, for the industrial practice of oxygen-enriched combusting provides guarantee.
Description of drawings
Fig. 1 is the specific embodiment structural representation of oxygen injector provided by the invention, in the drawings: 1. smoke wind pipe 2. smoke wind pipe side openings 3. replaceable shower nozzle 4. oxygen guide pipes 5 flanges 6. flanges 7. oxygen DC tubes
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As shown in Figure 1, a kind of oxygen injector of the present invention comprises oxygen DC tube 7, oxygen guide pipe 4, shower nozzle 3, smoke wind pipe side opening 2, a pair of flange 5 and 6.Oxygen guide pipe 4 one ends are connected with shower nozzle 3, and an end is connected with oxygen DC tube 7.A flange 6 is installed on the oxygen DC tube 7, and a flange 5 is installed on the smoke wind pipe side opening 2, to guarantee after flange connects smoke wind pipe side opening 2 and oxygen DC tube 7 with one heart and the outlet and the smoke wind pipe 1 of oxygen guide pipe 4 concentric.
Said smoke wind pipe side opening is to guarantee that the oxygen injector can get into smoke wind pipe and the hole perpendicular to side wall surface of opening on the smoke wind pipe side wall surface of place can be installed with one heart.
The outlet and the smoke wind pipe of the oxygen guide pipe of oxygen injector are concentric, and oxygen is mixed with flue gas under the situation of directly not clashing into duct wall uniformly.
The selection of oxygen injector caliber is that the flow velocity when guaranteeing that oxygen gets into smoke wind pipe has the speed difference bigger with flue gas flow rate, the 2-5 that general oxygen jet speed is flue gas flow rate doubly, bigger speed difference can guarantee that oxygen and flue gas mix faster.
The replaceable shower nozzle of oxygen injector is that the oxygen guide pipe of one group of one end and oxygen injector is connected, and the other end has the little straight length in different outlets aperture, can control the mixing velocity of oxygen and flue gas through changing oxygen outlet speed.
Specify the course of work and the effect of the said oxygen injector of Fig. 1 below.
The course of work of the said oxygen injector of Fig. 1: oxygen raises speed through the convergent spout after the inflow-rate of water turbine meter gets into the oxygen DC tube of oxygen injector from oxygen channel; Making the oxygen jet direction turn 90 degrees the back partially through the oxygen guide pipe again penetrates from replaceable shower nozzle; Oxygen jet is at the center of smoke wind pipe; By feat of bigger speed difference, oxygen and flue gas can mix rapidly and uniformly.
Instance 1
During oxygen-enriched combusting, comprise wind one time, secondary wind, tertiary air, after-flame wind all needs premix oxygen at each interior smoke wind pipe.Oxygen raises speed through the convergent spout after the inflow-rate of water turbine meter gets into the oxygen DC tube of oxygen injector from oxygen channel; Making the oxygen jet direction turn 90 degrees the back partially through the oxygen guide pipe again penetrates from replaceable shower nozzle; Replaceable shower nozzle is little straight length; The outlet of replaceable shower nozzle is a single hole, and the aperture is identical with the aperture of oxygen guide pipe.Oxygen jet is at the center of smoke wind pipe, and by feat of bigger speed difference, oxygen and flue gas can mix rapidly and uniformly.
Instance 2
During oxygen-enriched combusting, comprise wind one time, secondary wind, tertiary air, after-flame wind all needs premix oxygen at each interior smoke wind pipe.Oxygen raises speed through the convergent spout after the inflow-rate of water turbine meter gets into the oxygen DC tube of oxygen injector from oxygen channel; Making the oxygen jet direction turn 90 degrees the back partially through the oxygen guide pipe again penetrates from replaceable shower nozzle; Replaceable shower nozzle is little straight length, and little straight length inside is equipped with tangential vane, and oxygen jet is rotated; The outlet of replaceable shower nozzle is a single hole, and the aperture is identical with the aperture of oxygen guide pipe.The oxygen of smoke wind pipe center rotation increased greatly and flue gas between disturbance, make that oxygen and flue gas can be rapidly and uniform mixing.
During oxygen-enriched combusting, comprise wind one time, secondary wind, tertiary air, after-flame wind all needs premix oxygen at each interior smoke wind pipe.Oxygen raises speed through the convergent spout after the inflow-rate of water turbine meter gets into the oxygen DC tube of oxygen injector from oxygen channel; Making the oxygen jet direction turn 90 degrees the back partially through the oxygen guide pipe again penetrates from replaceable shower nozzle; Replaceable shower nozzle is little straight length, and the outlet of replaceable shower nozzle is a plurality of apertures of along the circumferential direction evenly arranging.The multiply oxygen jet is at the center of smoke wind pipe, and by feat of bigger speed difference, oxygen and flue gas can mix rapidly and uniformly.
Those skilled in the art will readily understand; The above is merely preferred embodiment of the present invention; Not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. oxygen injector, it is characterized in that: it comprises oxygen DC tube, oxygen guide pipe, shower nozzle and first, second flange; The oxygen guide pipe is a bend pipe, and an end connects the oxygen DC tube, and the other end inserts in the smoke wind pipe through the smoke wind pipe side opening, and is connected with shower nozzle; First flange is connected with the oxygen DC tube, and second flange is connected with the smoke wind pipe side opening, and the coaxial connection of first, second flange makes oxygen DC tube and smoke wind pipe side opening concentric, and the outlet and the smoke wind pipe of oxygen guide pipe are concentric.
2. oxygen injector according to claim 1 is characterized in that said smoke wind pipe side opening is perpendicular to the hole of side wall surface.
3. oxygen injector according to claim 1 and 2 is characterized in that, said first, second flange outer diameter is identical, and the bolt hole position of installation is identical with size, and internal diameter is different.
4. oxygen injector according to claim 3 is characterized in that, shower nozzle is the changeable type shower nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100558409A CN102607051A (en) | 2012-03-05 | 2012-03-05 | Oxygen injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100558409A CN102607051A (en) | 2012-03-05 | 2012-03-05 | Oxygen injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102607051A true CN102607051A (en) | 2012-07-25 |
Family
ID=46524677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100558409A Pending CN102607051A (en) | 2012-03-05 | 2012-03-05 | Oxygen injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102607051A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712230A (en) * | 2013-12-21 | 2014-04-09 | 华中科技大学 | Built-in oxygen injection device for coal-fired power generation oxygen-enriched combustion |
| CN103712231A (en) * | 2013-12-21 | 2014-04-09 | 华中科技大学 | External oxygen injection device for coal-fired power generation oxygen-enriched combustion |
| CN110307561A (en) * | 2018-03-20 | 2019-10-08 | 中国科学院工程热物理研究所 | Coal dust fluidization is from preheating device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063525A (en) * | 2007-04-03 | 2007-10-31 | 北京科技大学 | Oxygen-enriched combustion radiant tube heaters |
| CN201016469Y (en) * | 2007-02-12 | 2008-02-06 | 黄俊和 | Flue gas reclaimer for highly effective environment protection energy-saving coal-burning boiler |
| WO2011040618A1 (en) * | 2009-09-30 | 2011-04-07 | Sumitomo Chemical Company, Limited | Mixing apparatus of combustible gas and combustion supporting gas |
| WO2011051463A1 (en) * | 2009-10-30 | 2011-05-05 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Solid fuel burner |
| CN202485026U (en) * | 2012-03-05 | 2012-10-10 | 华中科技大学 | Oxygen injector |
-
2012
- 2012-03-05 CN CN2012100558409A patent/CN102607051A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201016469Y (en) * | 2007-02-12 | 2008-02-06 | 黄俊和 | Flue gas reclaimer for highly effective environment protection energy-saving coal-burning boiler |
| CN101063525A (en) * | 2007-04-03 | 2007-10-31 | 北京科技大学 | Oxygen-enriched combustion radiant tube heaters |
| WO2011040618A1 (en) * | 2009-09-30 | 2011-04-07 | Sumitomo Chemical Company, Limited | Mixing apparatus of combustible gas and combustion supporting gas |
| WO2011051463A1 (en) * | 2009-10-30 | 2011-05-05 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Solid fuel burner |
| CN202485026U (en) * | 2012-03-05 | 2012-10-10 | 华中科技大学 | Oxygen injector |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712230A (en) * | 2013-12-21 | 2014-04-09 | 华中科技大学 | Built-in oxygen injection device for coal-fired power generation oxygen-enriched combustion |
| CN103712231A (en) * | 2013-12-21 | 2014-04-09 | 华中科技大学 | External oxygen injection device for coal-fired power generation oxygen-enriched combustion |
| CN103712230B (en) * | 2013-12-21 | 2015-12-02 | 华中科技大学 | A kind of built-in oxygen injection device for coal fired power generation oxygen-enriched combusting |
| CN110307561A (en) * | 2018-03-20 | 2019-10-08 | 中国科学院工程热物理研究所 | Coal dust fluidization is from preheating device and method |
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Application publication date: 20120725 |