CN104482538A - Burner for radiant tube - Google Patents
Burner for radiant tube Download PDFInfo
- Publication number
- CN104482538A CN104482538A CN201410728219.3A CN201410728219A CN104482538A CN 104482538 A CN104482538 A CN 104482538A CN 201410728219 A CN201410728219 A CN 201410728219A CN 104482538 A CN104482538 A CN 104482538A
- Authority
- CN
- China
- Prior art keywords
- radiant tube
- air
- tube burner
- hole
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/725—Protection against flame failure by using flame detection devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/007—Mixing tubes, air supply regulation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
The invention provides a burner for a radiant tube. The burner comprises a burning chamber. One end of the burning chamber is connected with a primary air-distributing disc; the other end thereof is connected with a flow-limiting disc; the middle of the primary air-distributing disc is provided with a gas pipe hole; the outer periphery of the primary air-distributing disc is peripherally provided with a plurality of primary air holes; the middle of the flow-limiting disc is provided with a spout; the outer periphery of the flow-limiting disc is peripherally provided with a plurality of secondary air holes. The burner has the advantages that ignition of low-caloric converter gas on the burner is guaranteed, stable burning of the low-caloric converter gas is guaranteed, and uniform temperature of the radiant tube is guaranteed.
Description
Technical field
The present invention has about a kind of burner, especially has the radiant tube burner of the lower calorific value converter coal gas applied in the industrial furnace heating art about a kind of metallurgy industry.
Background technology
At present, big-and-middle-sized smelter, in its production process, all can supervene the lower calorific value converter coal gas such as coal gas of converter, blast furnace gas.Significant period of time in the past, these lower calorific value converter coal gas because value is not high, and is burnt by emptying or are not utilized effectively.Along with the raising of energy prices in world wide, lower calorific value converter coal gas also more and more comes into one's own, the various new technologies of lower calorific value converter coal gas are effectively utilized also to be developed and to come into operation, this had both saved the energy, reduce cost, also cleaning of environment, for the producer and society bring many-sided interests simultaneously.
Coal gas of converter be produce in convertor steelmaking process with CO, N
2be that (thermal value range is 1300-1800kcal/Nm to main fuel gas with low heat value
3), be the important secondary energy sources of iron and steel enterprise.When usual coal gas of converter is applied on firing equipment, the mixed gas that the high heating value gases such as many and coke-stove gas are mixed into higher thermal value uses.
In recent years, some factories start to attempt directly using the coal gas of converter that calorific value is lower on various protective atmosphere radiant tube heating furnace and direct firing furnace.But traditional radiant burner is only applicable to natural gas, coke-stove gas, and calorific value is higher than 2000kcal/Nm
3the fuel such as mixed gas, when for lower calorific value converter coal gas, there will be the problems such as burner ignition difficulties, flame monitoring instability, power output reduction.
Therefore, be necessary to provide a kind of new radiant tube burner, overcome above-mentioned defect.
Summary of the invention
The object of this invention is to provide a kind of radiant tube burner, the igniting of lower calorific value converter coal gas on radiant tube burner can be ensured, make lower calorific value converter coal gas smooth combustion and ensure the homogeneous temperature of radiant tube.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
The invention provides a kind of radiant tube burner, it comprises combustion chamber, one end of described combustion chamber is connected with an air-distributing disc, its other end is connected with throttle disk, the middle part of a described air-distributing disc is provided with gas pipe perforate, its outer peripheral edge along the circumferential direction offers the perforation of multiple First air, the middle part of described throttle disk is provided with spray orifice, its outer peripheral edge along the circumferential direction offers the perforation of multiple Secondary Air.
In a preferred embodiment, be connected with gas-jet in described gas pipe perforate, one end that described gas-jet stretches into described combustion chamber offers multiple coal gas spray orifice.
In a preferred embodiment, multiple described coal gas spray orifice is opened on all sidewalls of described gas-jet.
In a preferred embodiment, multiple described coal gas spray orifice offers two rows along the axial direction of described gas-jet, one row described in multiple coal gas spray orifice and another arrange described in the interlaced setting of multiple coal gas spray orifices.
In a preferred embodiment, a described air-distributing disc offers electrode hole and electrode column through hole.
In a preferred embodiment, a described air-distributing disc offers multiple inclined hole, and described inclined hole is arranged near described electrode hole.
In a preferred embodiment, a described air-distributing disc offers flame monitoring hole.
In a preferred embodiment, described First air perforation is the through hole of rectangular in cross-section.
In a preferred embodiment, described Secondary Air perforation is the through hole of cross section semicircular in shape.
Feature and the advantage of radiant tube burner of the present invention are:
1, radiant tube burner of the present invention, simple and compact for structure, and the spout of air, lower calorific value converter coal gas arranges rationally, and the coal gas of converter of ejection and air fully can be mixed, ignition performance is good, flameholding.
2, radiant tube burner of the present invention, makes lower calorific value converter coal gas ejection at a high speed after the combustion of combustion chamber, and spraying into by Secondary Air, again burn in radiant tube, by the mode that classification air feed burns, reduce the discharge of nitrogen oxide, and improve radiant tube temperature homogeneity.
3, radiant tube burner of the present invention, is provided with ignitor and ultraviolet flame monitoring pipe, can realize radiant tube burner small-power to rated power igniting and burning, adopt ultraviolet flame monitoring mode, ensure that the reliability of flame monitoring.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the front view of radiant tube burner of the present invention.
Fig. 2 is the front view that radiant tube of the present invention is connected with gas pipe, ignitor and flame monitor with burner.
Fig. 3 is the top view that radiant tube of the present invention is connected with gas pipe, ignitor and flame monitor with burner.
Fig. 4 is that the A-A of Fig. 1 is to sectional view.
Fig. 5 is that the B-B of Fig. 1 is to sectional view.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As Figure 1-3, the invention provides a kind of radiant tube burner, be applicable to the burning of lower calorific value converter coal gas, wherein the thermal value range of lower calorific value converter coal gas is 1300-1800kcal/Nm
3.This radiant tube burner comprises combustion chamber 1, one end of described combustion chamber 1 is connected with an air-distributing disc 2, its other end is connected with throttle disk 3, the middle part of a described air-distributing disc 2 is provided with gas pipe perforate 21, its outer peripheral edge along the circumferential direction offers multiple First air perforation 22, the middle part of described throttle disk 3 is provided with spray orifice 31, its outer peripheral edge along the circumferential direction offers multiple Secondary Air perforation 32.
Specifically, combustion chamber 1 is heat resisting steel tubular structure, and its one end is connected with an air-distributing disc 2, and the other end is connected with throttle disk 3.Combustion chamber 1 is arranged in radiant tube 4, and an air-distributing disc 2 is for being connected with flame monitoring pipe 7 with gas pipe 5, ignitor 6, and wherein, gas pipe 5, ignitor 6 are connected by burner adpting flange 8 with flame monitoring pipe 7.
As shown in Figure 4, one time air-distributing disc 2 is heat resisting steel disk, offers gas pipe perforate 21 in the middle part of it, in the present embodiment, be connected with gas-jet 51 in gas pipe perforate 21, one end of this gas-jet 51 is connected with gas pipe 5, and its other end stretching into combustion chamber 1 offers multiple coal gas spray orifice 511.In the present invention, multiple coal gas spray orifice 511 is opened on all sidewalls of gas-jet 51, and the axis of this coal gas spray orifice 511 and the axes normal of combustion chamber 1 are arranged, and can strengthen the mixing of air and coal gas like this, improve the ignition performance of lower calorific value converter coal gas; Further, those coal gas spray orifices 511 offer two rows along the axis direction of gas-jet 51, multiple coal gas spray orifices 511 of a row and another interlaced setting of multiple coal gas spray orifices 511 of arranging, non-interference to make between each coal gas spray orifice 511 of two rows.In addition, the outer peripheral edge of this air-distributing disc 2 along the circumferential direction evenly offers multiple First air perforation 22, this First air perforation 22 is the through hole of rectangular in cross-section, in the present embodiment, this First air perforation axis of 22 and the card of an air-distributing disc 2 are obliquely installed at an angle, the benefit of such setting is, the air entered in combustion chamber 1 by air-distributing disc 2 can be made to form eddy flow, the mixing of further strengthening air and coal gas, those First air perforation 22 passing through for First air, its quantity and area are calculated by the burning capacity of radiant tube burner and the ratio of corresponding combustion air flow and First air.
Further, this air-distributing disc 2 also offers electrode hole 23 and electrode column through hole 24, electrode hole 23 and electrode column through hole 24 are for wearing igniter head of fixed ignition electrode 6 and putting the column of flame.In a preferred embodiment, this air-distributing disc 2 offers multiple inclined hole 25, in the present embodiment, inclined hole 25 is two, those inclined holes 25 are arranged near electrode hole 23, the axis direction of this inclined hole 25 is obliquely installed along the direction that is blown into of First air to electrode hole 23, this inclined hole 25 passing through for First air, to make ignitor 6 can smooth ignition.In addition, this air-distributing disc 2 also offers flame monitoring hole 26, this flame monitoring hole 26 is for inserting flame monitoring pipe 7, and this flame monitoring pipe 7 enters in the flame monitoring hole 26 of an air-distributing disc 2 along the air duct oblique cutting of radiant tube 4, and its one end outside flange 8 is connected with flame monitor.
As shown in Figure 5, throttle disk 3 is heat-resisting steel part, offers spray orifice 31 in the middle part of it, and this spray orifice 31 is for controlling the speed of flame spontaneous combustion room 1 ejection, and the area of spray orifice 31 is calculated by the volume of primary combustion flame and spouting velocity; The outer peripheral edge of throttle disk 3 along the circumferential direction evenly offers multiple Secondary Air perforation 32, this Secondary Air perforation 32 is the through hole of cross section semicircular in shape, its circumferencial direction radial symmetric along throttle disk 3 is arranged, those Secondary Airs perforation 32 passing through for Secondary Air, quantity and the area of Secondary Air perforation 32 are calculated by the burning capacity of radiant tube burner and the ratio of corresponding combustion air flow and Secondary Air.
The course of work of this radiant tube burner is as follows: a part of combustion air in radiant tube 4 enters in combustion chamber 1 by the multiple First air perforation 22 of an air-distributing disc 2 and inclined hole 25, in combustion chamber 1, mix combining combustion respectively with the coal gas from gas pipe 5, combustion product and unburnt residual gas are by the ejection at a high speed of the spray orifice 31 in the throttle disk 3 of combustion chamber 1 other end; Another part combustion air in radiant tube 4 bore a hole by the gap 41 of throttle disk 3 and radiant tube 4 and Secondary Air and 32 spray, in radiant tube 4 and remain combustion gas mixing and burn.The present invention adopts air staged combustion technology, improves igniting and combustion efficiency, improves the temperature homogeneity of radiant tube 4 length direction, and owing to reducing the flame temperature of primary combustion, the content of nitrogen oxide in combustion product is declined to a great extent.
Feature and the advantage of radiant tube burner of the present invention are:
1, radiant tube burner of the present invention, simple and compact for structure, and the spout of air, lower calorific value converter coal gas arranges rationally, and the coal gas of converter of ejection and air fully can be mixed, ignition performance is good, flameholding.
2, radiant tube burner of the present invention, makes lower calorific value converter coal gas ejection at a high speed after the combustion of combustion chamber 1, and spraying into by Secondary Air, again burn in radiant tube 4, by the mode that classification air feed burns, reduce the discharge of nitrogen oxide, and improve radiant tube 4 temperature homogeneity.
3, radiant tube burner of the present invention, is provided with ignitor 6 and ultraviolet flame monitoring pipe 7, can realize radiant tube burner small-power to rated power igniting and burning, adopt ultraviolet flame monitoring mode, ensure that the reliability of flame monitoring.
Radiant tube burner of the present invention, has that ignition performance is good, flameholding, jets out flames longer, the advantage such as radiant tube temperature homogeneity is good, is applicable to the radiant tube firing equipment only having lower calorific value converter coal gas in the industry such as metallurgy, chemical industry.
The foregoing is only several embodiments of the present invention, those skilled in the art can carry out various change or modification to the embodiment of the present invention according to content disclosed in application documents and not depart from the spirit and scope of the present invention.
Claims (9)
1. a radiant tube burner, it is characterized in that, it comprises combustion chamber, one end of described combustion chamber is connected with an air-distributing disc, its other end is connected with throttle disk, and the middle part of a described air-distributing disc is provided with gas pipe perforate, its outer peripheral edge along the circumferential direction offers the perforation of multiple First air, the middle part of described throttle disk is provided with spray orifice, its outer peripheral edge along the circumferential direction offers the perforation of multiple Secondary Air.
2. radiant tube burner as claimed in claim 1, it is characterized in that, be connected with gas-jet in described gas pipe perforate, one end that described gas-jet stretches into described combustion chamber offers multiple coal gas spray orifice.
3. radiant tube burner as claimed in claim 2, it is characterized in that, multiple described coal gas spray orifice is opened on all sidewalls of described gas-jet.
4. radiant tube burner as claimed in claim 3, it is characterized in that, multiple described coal gas spray orifice offers two rows along the axial direction of described gas-jet, the multiple coal gas spray orifice described in a row and another arrange described in the interlaced setting of multiple coal gas spray orifices.
5. radiant tube burner as claimed in claim 1, is characterized in that, a described air-distributing disc offers electrode hole and electrode column through hole.
6. radiant tube burner as claimed in claim 5, it is characterized in that, a described air-distributing disc offers multiple inclined hole, and described inclined hole is arranged near described electrode hole.
7. radiant tube burner as claimed in claim 1, is characterized in that, a described air-distributing disc offers flame monitoring hole.
8. radiant tube burner as claimed in claim 1, is characterized in that, described First air perforation is the through hole of rectangular in cross-section.
9. radiant tube burner as claimed in claim 1, is characterized in that, described Secondary Air perforation is the through hole of cross section semicircular in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410728219.3A CN104482538A (en) | 2014-12-04 | 2014-12-04 | Burner for radiant tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410728219.3A CN104482538A (en) | 2014-12-04 | 2014-12-04 | Burner for radiant tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104482538A true CN104482538A (en) | 2015-04-01 |
Family
ID=52757110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410728219.3A Pending CN104482538A (en) | 2014-12-04 | 2014-12-04 | Burner for radiant tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104482538A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730970A (en) * | 2017-04-15 | 2018-11-02 | 南京建安机械制造有限公司 | Five-channel coal-powder combustor |
| EP3719397A1 (en) * | 2019-04-03 | 2020-10-07 | Slovenské magnezitové závody, akciová spolocnost, Jelsava, v skratke SMZ, a.s. Jelsava | Burner for combustion of gaseous fuels in shaft furnace, especially for heat processing of minerals in granular form |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032385A (en) * | 1987-04-16 | 1989-04-12 | 拉米恩斯Pty有限公司 | The jet motion of control fluid |
| JP2010032184A (en) * | 2008-07-31 | 2010-02-12 | Tokyo Gas Co Ltd | Burner for fuel cell reformer, and reformer equipped with it |
| CN201628224U (en) * | 2010-04-09 | 2010-11-10 | 中冶南方(武汉)威仕工业炉有限公司 | Combustion-supporting air grading adjusting device for grading combustor |
| CN101900334A (en) * | 2009-06-01 | 2010-12-01 | 王文庭 | Rotary premixed gas burner of pottery kiln |
| CN203586205U (en) * | 2013-11-14 | 2014-05-07 | 北京兴达奇热工控制设备有限公司 | Low-nitrogen-oxide gas burner of industrial kiln |
| CN203642174U (en) * | 2013-12-31 | 2014-06-11 | 北京京诚凤凰工业炉工程技术有限公司 | Self-preheating burner nozzle for low-heating-value converter gas |
| CN204254619U (en) * | 2014-12-04 | 2015-04-08 | 北京京诚凤凰工业炉工程技术有限公司 | Radiant tube burner |
-
2014
- 2014-12-04 CN CN201410728219.3A patent/CN104482538A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032385A (en) * | 1987-04-16 | 1989-04-12 | 拉米恩斯Pty有限公司 | The jet motion of control fluid |
| JP2010032184A (en) * | 2008-07-31 | 2010-02-12 | Tokyo Gas Co Ltd | Burner for fuel cell reformer, and reformer equipped with it |
| CN101900334A (en) * | 2009-06-01 | 2010-12-01 | 王文庭 | Rotary premixed gas burner of pottery kiln |
| CN201628224U (en) * | 2010-04-09 | 2010-11-10 | 中冶南方(武汉)威仕工业炉有限公司 | Combustion-supporting air grading adjusting device for grading combustor |
| CN203586205U (en) * | 2013-11-14 | 2014-05-07 | 北京兴达奇热工控制设备有限公司 | Low-nitrogen-oxide gas burner of industrial kiln |
| CN203642174U (en) * | 2013-12-31 | 2014-06-11 | 北京京诚凤凰工业炉工程技术有限公司 | Self-preheating burner nozzle for low-heating-value converter gas |
| CN204254619U (en) * | 2014-12-04 | 2015-04-08 | 北京京诚凤凰工业炉工程技术有限公司 | Radiant tube burner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730970A (en) * | 2017-04-15 | 2018-11-02 | 南京建安机械制造有限公司 | Five-channel coal-powder combustor |
| EP3719397A1 (en) * | 2019-04-03 | 2020-10-07 | Slovenské magnezitové závody, akciová spolocnost, Jelsava, v skratke SMZ, a.s. Jelsava | Burner for combustion of gaseous fuels in shaft furnace, especially for heat processing of minerals in granular form |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150401 |