CN202012913U - Novel flue gas self-reflux low-oxygen combustor - Google Patents

Novel flue gas self-reflux low-oxygen combustor Download PDF

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Publication number
CN202012913U
CN202012913U CN201020668557XU CN201020668557U CN202012913U CN 202012913 U CN202012913 U CN 202012913U CN 201020668557X U CN201020668557X U CN 201020668557XU CN 201020668557 U CN201020668557 U CN 201020668557U CN 202012913 U CN202012913 U CN 202012913U
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CN
China
Prior art keywords
combustion
flue gas
combustion air
supporting air
ventilating duct
Prior art date
Application number
CN201020668557XU
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Chinese (zh)
Inventor
马晓阳
曹朝辉
王文奇
蒋松
Original Assignee
洛阳瑞昌石油化工设备有限公司
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Application filed by 洛阳瑞昌石油化工设备有限公司 filed Critical 洛阳瑞昌石油化工设备有限公司
Priority to CN201020668557XU priority Critical patent/CN202012913U/en
Application granted granted Critical
Publication of CN202012913U publication Critical patent/CN202012913U/en

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    • Y02E20/348

Abstract

The utility model belongs to the technology field of petrochemical industry, and mainly relates to a novel flue gas self-reflux low-oxygen combustor, a combustion-supporting air guide barrel (4) is disposed in a combustor housing (5), the combustion-supporting air guiding barrel (4) is communicated with a combustion-supporting air inlet at one side of the combustion housing, the center of the combustion-supporting air guiding barrel (4) is also provided with a fuel spray gun (3), the combustion-supporting air guiding barrel (4) is communicated with a flue (6) of heterotype firebricks at the upper part of the combustion-supporting air guiding barrel, the outlet of the combustion-supporting air guiding barrel (4) is provided with a swirler(8), a flue gas flow channel (7) is disposed on the heterotype firebricks (1), the flue gas flow channel (7) is communicated with the flue of the heterotype firebricks. The novel flue gas self-reflux low-oxygen combustor, via low-oxygen combustion and flue gas self-reflux technology, further reduces generation of nitrogen oxide.

Description

A kind of novel flue gas is from refluxing the combustion with meagre oxygen device

Technical field

The utility model belongs to the petrochemical technology field, relates generally to a kind of novel flue gas from refluxing the combustion with meagre oxygen device.

Background technology

Along with new combustion techniques constantly develops, in the application of having arrived of petrochemical industry tube furnace, it has burner and does not have the localized hyperthermia district smoke backflow combustion technology, low NO XDischarging, low CO 2Discharging, the advantage of raising burner hearth heat transfer efficiency.But itself does not possess the smoke backflow function used burner.In order to realize smoke backflow, need on existing equipment, to increase the high-temperature flue gas air-introduced machine high-temperature flue gas is drawn down from furnace roof at present, after the heat exchanger cooling, squeeze in the combustion air then.Equipment cost and operating cost increase greatly like this.

In order to realize that the existing equipment main body do not change,, rely on burner self to realize smoke backflow by a kind of novel burner.The utility model provides a kind of and relies on fuel and combustion air to spray upper and lower temperature difference that kinetic energy and burning produce inner flue gas of the stove to be introduced the petroleum chemical industry tubular heater that reduces the combustion air oxygen concentration in the burning quirk with novel low Nox burner.

Summary of the invention

The purpose of this utility model is to propose a kind of novel flue gas from refluxing the combustion with meagre oxygen device, reduces the oxygen concentration in the combustion air, simultaneously pre-heating fuel and combustion air, make its more easy firing, thereby make the flame temperature of burner lower, flame is more stable, fuel combustion is more abundant, reduces thermodynamics NO XGenerate.

The utility model is finished the technical scheme that its invention task taked:

A kind of novel flue gas is from refluxing the combustion with meagre oxygen device, in the housing of burner, has the combustion air ventilating duct, the combustion air ventilating duct is communicated with the combustion air inlet of burner shell one side, center at the combustion air ventilating duct is provided with Fuel lance, and the combustion air ventilating duct is communicated with the quirk of combustion air ventilating duct top heterotypic fire brick; Described heterotypic fire brick is provided with flue gas flow channel, and flue gas flow channel is communicated with in refractory brick quirk bottom with the quirk of heterotypic fire brick.

Outlet at the combustion air ventilating duct is provided with cyclone.

A kind of novel flue gas that the utility model proposes is from refluxing the combustion with meagre oxygen device, adopt flue gas from technique of backflow, the heterotypic fire brick center flow channels is the quirk of fuel combustion, at quirk arranged outside flue gas flow channel, flue gas flow channel connects burner hearth and bottom, combustion zone, two passages communicate in the bottom, combustion zone, burner fuel leaves the high spraying speed jet of shower nozzle and the aerodynamic energy of combustion air ventilating duct outlet makes refractory brick base burning district form a negative pressuren zone, and the upper and lower temperature difference that the quirk burning produces is strengthened this negative pressuren zone.Inner flue gas of the stove enters quirk by flue gas flow channel through the bottom, combustion zone and participates in combustion reaction under action of pressure, and flue gas does not need other extra kinetic energy; Adopt the combustion with meagre oxygen technology in addition, inner flue gas of the stove is introduced into the burning that quirk participates in fuel under suction function.Because the oxygen in the flue gas is consumed, the backflow flue gas mixes with combustion air, and the flue gas cooling flame of inertia certainly will reduce the partial pressure of oxygen (oxygen content<21%) of combustion zone.The concentration of oxygen can be adjusted the size of introducing exhaust gas volumn as required.Under the oxygen deprivation condition, the NO in the flue gas XCan obviously reduce.

The utility model burner is compared with conventional burners, and this burner flame maximum temperature can reduce about 200 ℃, NO xGrowing amount can reduce 60%--70%.Can reach below the 40ppm, reduce operating cost, be the collection energy-saving and environmental protection, efficiently be the novel burner of one.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Among the figure: 1. heterotypic fire brick, 2. bottom, combustion zone, 3. Fuel lance, 4. combustion air ventilating duct, 5. burner shell, 6. quirk, 7. flue gas flow channel, 8. cyclone is 9. transferred the wind butterfly valve.

The specific embodiment

In conjunction with the accompanying drawings, the utility model further is illustrated:

As shown in Figure 1, a kind of novel flue gas is from refluxing the combustion with meagre oxygen device, in burner shell 5, has combustion air ventilating duct 4, combustion air ventilating duct 4 is communicated with burner shell one side, the combustion air inlet is provided with transfers wind butterfly valve 9, be provided with Fuel lance 3 at the center of combustion air ventilating duct 4, Fuel lance 3 directly sprays into fuel in the quirk 6; The quirk 6 of combustion air ventilating duct 4 and combustion air ventilating duct top heterotypic fire brick is communicated with, and is provided with cyclone 8 in the outlet of combustion air ventilating duct; Described heterotypic fire brick is provided with flue gas flow channel 7, and flue gas flow channel 7 is communicated with in refractory brick quirk bottom with the quirk 6 of heterotypic fire brick.

Combustion air enters combustion air ventilating duct 4 from the combustion air inlet, regulates combustion air by transferring wind butterfly valve 9, and the combustion air in the combustion air ventilating duct 4 is delivered to 2 places, bottom, combustion zone of heterotypic fire brick 1 quirk 6; Fuel lance 3 sprays into quirk 6 with fuel, the gas stream of high velocity jet is by the ejector action of the air stream of cyclone, the aditus laryngis place forms certain draft in the refractory brick bottom, fuel gas and the burning of air high-speed mixing, temperature raises rapidly, the gas density of unit volume diminishes, the gas that proportion is little rises, the bottom generates negative pressuren zone, after negative pressure forms, inner flue gas of the stove is introduced into quirk 6 bottom negative pressuren zones by flue gas flow channel 7 under the effect of negative pressure, enters quirk 6 combustion zones through the flue gas flow channel 7 between heterotypic fire brick quirk 6 and the combustion air ventilating duct 4 again, and flue gas enters flame zone and participates in burning, form flue gas from refluxing, the combustion zone temperature of so further reduction reduces the oxygen concentration in the combustion air, and whole combustion process belongs to a kind of DIFFUSION CONTROLLED formula reaction, there is not local high-temperature region, whole combustion zone forms temperature high temperature intense radiation black matrix relatively uniformly, and the burner hearth thermal efficiency significantly improves, and what NOx generated reduces to further.

Claims (2)

1. a novel flue gas is from refluxing the combustion with meagre oxygen device, in burner shell (5), has combustion air ventilating duct (4), combustion air ventilating duct (4) is communicated with the combustion air inlet of burner shell one side, be provided with Fuel lance (3) at the center of combustion air ventilating duct (4), it is characterized in that: combustion air ventilating duct (4) is communicated with the quirk (6) of combustion air ventilating duct top heterotypic fire brick; Described heterotypic fire brick (1) is provided with flue gas flow channel (7), and flue gas flow channel (7) is communicated with in refractory brick quirk bottom with the quirk (6) of heterotypic fire brick.
2. a kind of novel flue gas according to claim 1 is from refluxing the combustion with meagre oxygen device, and it is characterized in that: the outlet at combustion air ventilating duct (4) is provided with cyclone (8).
CN201020668557XU 2010-12-20 2010-12-20 Novel flue gas self-reflux low-oxygen combustor CN202012913U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201020668557XU CN202012913U (en) 2010-12-20 2010-12-20 Novel flue gas self-reflux low-oxygen combustor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201020668557XU CN202012913U (en) 2010-12-20 2010-12-20 Novel flue gas self-reflux low-oxygen combustor

Publications (1)

Publication Number Publication Date
CN202012913U true CN202012913U (en) 2011-10-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201020668557XU CN202012913U (en) 2010-12-20 2010-12-20 Novel flue gas self-reflux low-oxygen combustor

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103727536A (en) * 2013-12-05 2014-04-16 西安西热锅炉环保工程有限公司 Multistage adjustable ultralow-nitrogen strong and weak rotational flow opposed-impact gas burner
CN105114951A (en) * 2015-08-21 2015-12-02 北京航天动力研究所 Tail edge backflow dual-classification low-nitrogen-oxygen gas burner
CN105953219A (en) * 2016-06-21 2016-09-21 上海齐耀热能工程有限公司 Flameless combustion device
CN105972588A (en) * 2016-07-14 2016-09-28 西安交通大学 High temperature flue gas extracting pre-burning type low NOx burner
CN106152136A (en) * 2016-08-26 2016-11-23 佛山市科皓燃烧设备制造有限公司 Combustion gas injection ultralow NOx fuel dilution technology heat-accumulating burner
CN106716014A (en) * 2014-06-12 2017-05-24 斯蒂-B及T集团股份公司 Burner for industrial furnace, as well as industrial furnace provided with such burner

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103727536A (en) * 2013-12-05 2014-04-16 西安西热锅炉环保工程有限公司 Multistage adjustable ultralow-nitrogen strong and weak rotational flow opposed-impact gas burner
CN103727536B (en) * 2013-12-05 2015-11-11 西安西热锅炉环保工程有限公司 The multistage adjustable strong and weak rotation flow impact gas burner of ultralow nitrogen
CN106716014A (en) * 2014-06-12 2017-05-24 斯蒂-B及T集团股份公司 Burner for industrial furnace, as well as industrial furnace provided with such burner
CN105114951A (en) * 2015-08-21 2015-12-02 北京航天动力研究所 Tail edge backflow dual-classification low-nitrogen-oxygen gas burner
CN105953219A (en) * 2016-06-21 2016-09-21 上海齐耀热能工程有限公司 Flameless combustion device
CN105953219B (en) * 2016-06-21 2018-01-16 上海齐耀热能工程有限公司 Flameless combustion apparatus
CN105972588A (en) * 2016-07-14 2016-09-28 西安交通大学 High temperature flue gas extracting pre-burning type low NOx burner
CN106152136A (en) * 2016-08-26 2016-11-23 佛山市科皓燃烧设备制造有限公司 Combustion gas injection ultralow NOx fuel dilution technology heat-accumulating burner
CN106152136B (en) * 2016-08-26 2018-11-16 佛山市科皓燃烧设备制造有限公司 The ultralow NOx fuel dilution technology heat-accumulating burner of combustion gas injection

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GR01 Patent grant
CP01 Change in the name or title of a patent holder
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Address after: 471003 No. 8, Yan Guang road, high and new technology development zone, Luoyang, Henan

Patentee after: Luoyang Ruichang Environmental Engineering Co., Ltd.

Address before: 471003 No. 8, Yan Guang road, high and new technology development zone, Luoyang, Henan

Patentee before: Luoyang Ruichang Petrochemical Equipment Co., Ltd.