CN106705043A - Multifunctional radiant tube combustion device - Google Patents
Multifunctional radiant tube combustion device Download PDFInfo
- Publication number
- CN106705043A CN106705043A CN201611166367.6A CN201611166367A CN106705043A CN 106705043 A CN106705043 A CN 106705043A CN 201611166367 A CN201611166367 A CN 201611166367A CN 106705043 A CN106705043 A CN 106705043A
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- Prior art keywords
- radiant tube
- combustion
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- gas
- medium layer
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Classifications
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- 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
- F23D14/12—Radiant burners
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- 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
- F23D14/62—Mixing devices; Mixing tubes
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- 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
- F23D14/66—Preheating the combustion air or gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- 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 invention belongs to the field of combustion equipment and particularly relates to a multifunctional radiant tube combustion device, comprising a side A combustion radiant tube, a side B combustion radiant tube and a transitional radiant tube, wherein two ends of the transitional radiant tube are connected to one ends of the side A combustion radiant tube and the side B combustion radiant tube respectively, and the other end of the side A combustion radiant tube is sequentially provided with an air/fuel gas mixed gas inlet or a smoke outlet, a low-temperature heat accumulator, a denitration catalyst area and a porous medium layer area. The multifunctional radiant tube combustion device has the advantages that smoke discharge temperature can be decreased effectively, smoke waste heat recycling rate is increased, energy-saving effect is significant, smoke denitration measures are applied to the radiant tube combustion device, denitration and energy conservation are integrated, nitrogen oxide emission from smoke is reduced effectively, the system is more environmentally friendly, and comprehensive input cost is lowered.
Description
Technical field
The invention belongs to field of combustion equipment, and in particular to a kind of multifunctional radiation pipe burner.
Background technology
Current radiant tube species has electric radiant tube, conventional gas fired radiant tubes, self-preheating type radiant tube, heat accumulating type to radiate
Pipe, and the various types of radiant tubes for developing out by these citation forms.The radiation Manifold technology of any of the above classification,
Relative maturity, but also each with certain limitation and deficiency.For electric radiant tube, spatial load forecasting freedom, but consume
High-grade energy, high cost is not suitable for industrialization；Conventional gas fired radiant tubes, spatial load forecasting freedom, flameholding, but consumption
Exotic fuels, while high fume temperature（Exhaust gas temperature is combustion product gases temperature）, the thermal efficiency is low, while being also easy to produce local height
Temperature, radiant tube surface temperature inhomogeneities is high, and nitrogen oxides is exceeded；Self preheating burner, radiant tube inner structure is complicated,
Failure is susceptible to, is more expensive to manufacture, air preheating temperature is limited, exhaust gas temperature is still not less than 500 DEG C；Heat accumulating type is radiated
Pipe, solves the problems, such as high fume temperature and radiant tube surface heterogeneity problem high, but using low-heat value gas
During such as blast furnace gas, heating temperature range is restricted, and when less than less than 650 DEG C, the security for using is on the hazard, it is necessary to
Using high heating value gas as ever-burning flame, so as to increased the unstability of system, simple porous media radiant tube burning dress
Put discharge nitrogen oxides in effluent and also have a certain distance apart from minimum discharge.Therefore a kind of radiation of high-efficiency environment friendly how is designed
Pipe burner turns into the technical problem of this area urgent need to resolve.
The content of the invention
The present invention is in view of the shortcomings of the prior art, it is proposed that a kind of multifunctional radiation pipe burner, the device can be effective
Exhaust gas temperature is reduced, flue gas heat recovery rate is improved, energy-saving effect is obvious, while denitrating flue gas treatment measures are applied to
Radiant tube combustion device, collects denitration and energy saving integrated, significantly reduces nitrogen oxides in effluent discharge, system more ring
Protect, the reduction of comprehensive method of investment cost.
In order to solve the above technical problems, the technical scheme that the present invention takes is：
The present invention proposes a kind of multifunctional radiation pipe burner, embodiments in accordance with the present invention, including：A sides burning radiation
Pipe, B sides combustion radiant tube and the transition radiation pipe for being attached A sides combustion radiant tube and B sides combustion radiant tube, its
In, the one end of the two ends of the transition radiation pipe respectively with A sides combustion radiant tube and B sides combustion radiant tube is attached,
Air and combustion gas mixing gas entrance/smoke evacuation outlet, Low Temperature Storage are sequentially provided with the other end of A sides combustion radiant tube
Hot body, denitrating catalyst area and porous medium layer area, wherein, the low-temperature heat accumulating body, denitrating catalyst area and porous medium layer
Area is located at the inside of A sides combustion radiant tube, and the one end in the porous medium layer area is provided with electronic ignition device and reducing agent
Entrance, the electronic ignition device is located at the top in the porous medium layer area and its one end stretches into the porous medium layer area,
The other end is located at the outside of A sides combustion radiant tube, for carrying out the air and combustion gas mixing gas to light burning, institute
Reducing agent entrance is stated positioned at the lower section in the porous medium layer area and its one end stretches into the porous medium layer area, the other end is located at
The outside of A sides combustion radiant tube, the denitrating catalyst area is flowed through for being passed through reducing agent when A sides are for smoke evacuation side, is entered
Row denitration reaction, reduces the discharge of nitrogen oxides, and the structure of B sides combustion radiant tube is identical with A sides combustion radiant tube.
Embodiments in accordance with the present invention, A sides combustion radiant tube and B sides combustion radiant tube are straight tube, transition radiation
It is semicircle to manage, and the internal diameter of A sides combustion radiant tube, B sides combustion radiant tube and transition radiation pipe is 300mm；The A sides
Combustion radiant tube and B sides combustion radiant tube are axially symmetrical arranged along the semicircle center of circle.
Embodiments in accordance with the present invention, the air and combustion gas mixing gas entrance/smoke evacuation outlet are the pipeline of DN100；
The denitrating catalyst zone length and width are 300mm, for filling denitrating catalyst, denitration occur with the reducing agent
Reaction；The porous medium layer zone length is 1500mm, and width is 300mm, and it is the foamed ceramics that aperture is 2-4mm.
Inventor is had found, according to multifunctional radiation pipe burner of the present invention, is filled using porous media and radiated
Pipe, to adapt to multi-state, big regulation ratio, electrodeless continuously adjustabe improves the uniformity of existing radiant tube surface temperature, while flue gas is de-
Nitre is integrated with porous media radiant tube, the characteristics of with denitration energy-conserving and environment-protective.
In another aspect of this invention, there is provided one kind is fired using foregoing multifunctional radiation pipe burner
The method of burning, embodiments in accordance with the present invention are comprised the following steps：The first step：When A sides combustion radiant tube is combustion side, B
Side combustion radiant tube is smoke evacuation side；It is passed through to A sides combustion radiant tube through the air and combustion gas mixing gas entrance described
Air and combustion gas mixing gas, the air and combustion gas mixing gas sequentially pass through low-temperature heat accumulating body, denitrating catalyst described in A sides
Area and porous medium layer area；Second step：After the air and combustion gas mixing gas reach porous medium layer area described in A sides, start
The electronic ignition device, lights the air and combustion gas mixing gas, and carrying out burning in the porous medium layer area produces height
Warm flue gas, high-temperature flue gas enter back into the transition radiation pipe and are heated, and pass through and heat the porous medium layer of the B sides
Area, high-temperature flue gas own temperature reduction when B sides porous medium layer area and transition radiation pipe is heated；3rd step：Work as flue gas
When reaching B side porous medium layer areas, reducing agent, the reducing agent and the flue gas one are sprayed into by the B sides reducing agent entrance
Rise and enter the B sides denitrating catalyst area, carry out denitration reaction, flowing through the low-temperature heat accumulating body by reacted flue gas enters one
Step reduces flue gas own temperature, and last flue gas is with the state of low temperature by outlet discharge of being discharged fume described in B sides；4th step：By one
Section the time commutated, B sides combustion radiant tube be combustion side, A sides combustion radiant tube for smoke evacuation side, working method with it is described
A sides combustion radiant tube is identical when being combustion side.
The power of embodiments in accordance with the present invention, A sides combustion radiant tube and B sides combustion radiant tube is 50-250kw, described
Combustion gas is that calorific value is 750 kcal/Nm3Blast furnace gas, specified gas flow be 175Nm3/ h, the coefficient of excess air is 1,
Combustion-supporting air quantity is 125 Nm3/h。
Embodiments in accordance with the present invention, in the step 2：The temperature of the high-temperature flue gas is 500-1100 DEG C；The step
In rapid three：The temperature of the low-temperature flue gas is less than 150 DEG C.
Embodiments in accordance with the present invention, A sides combustion radiant tube and B sides combustion radiant tube are often by half combustion period
Carry out alternately reversing combustion/smoke evacuation.
Embodiments in accordance with the present invention, the combustion period is：A sides combustion radiant tube burning-B sides combustion radiant tube row
The combustion radiant tube smoke evacuation of cigarette-B sides combustion radiant tube burning-A sides.
The present invention at least includes following beneficial effect：Device of the present invention, is adapted to the stabilization of low calorie fuels
Burning, and heat load adjustment is than greatly, being capable of achieving under each operating mode, electrodeless continuously adjustabe；Under porous media structure arrangement, due to it
Heat is flowed back in the way of radiating with heat transfer to porous media upstream region, preheats flammable premixed gas body so that burner energy
Steady operation, fire extinguishing is also unlikely to when thermic load has larger fluctuation, it is possible to achieve maximal regulated compares 1:6；And can effectively drop
Low exhaust gas temperature, improves flue gas heat recovery rate, and energy-saving effect is obvious, while pioneering by denitrating flue gas treatment measures application
In radiant tube combustion device, collect denitration and energy saving integrated, significantly reduce nitrogen oxides in effluent discharge, system is simpler
It is clean, the reduction of comprehensive method of investment cost；The porous media that the present invention is used simultaneously has good heat storage performance, and high-temperature flue gas are first passed through
Porous medium layer, allows porous media to maintain higher temperature（It is more than the ignition temperature of gaseous mixture）, by preliminary cooling
High-temperature flue gas, under the conditions of reducing agent is sprayed into, then by denitrating catalyst, the nitrogen oxides in effluent content finally discharged is less than
60 mg/m3, temperature can drop to less than 150 DEG C, realize that " limit " of fume afterheat is utilized, and eliminate the attached preheating such as heat exchanger
Reclaimer, fume afterheat utilization ratio is improved significantly, so that energy utilization rate higher and environmentally friendly efficiency are obtained, while
Reduce comprehensive method of investment cost, improve system stability and security performance；Additionally, interruption commutation type burning of the invention, can promote
Temperature homogeneity in the porous media of both sides, and between the porous media of high temperature and radiant tube it is heat conduction and radiation between solid
Heat transfer, because blackness is big, radiant heat transfer efficiency high, it is possible to achieve the minimum temperature difference between radiant tube temperature and porous media（It is small
In 50 DEG C）, energy utilization efficiency is greatly improved, while reducing the temperature homogeneity of radiation pipe surface, extend radiation
The service life of pipe.
Brief description of the drawings
Fig. 1 is a kind of multifunctional radiation pipe burner structural representation of the invention.
Wherein, A sides combustion radiant tube 1, B sides combustion radiant tube 2, transition radiation pipe 3, air and combustion gas mixing gas enter
Mouthful/smoke evacuation outlet 4, low-temperature heat accumulating body 5, denitrating catalyst area 6, porous medium layer area 7, electronic ignition device 8, reducing agent entrance
9。
Specific embodiment
In order that those skilled in the art more fully understand technical scheme, with reference to specific embodiment to this
Invention is described in further detail.The embodiments described below is exemplary, is only used for explaining the present invention, without being understood that
It is limitation of the present invention.Unreceipted particular technique or condition in embodiment, according to the skill described by document in the art
Art or condition are carried out according to product description.
The present invention proposes a kind of multifunctional radiation pipe burner, and Fig. 1 is a kind of multifunctional radiation Guan Ran of the invention
Burning device structure schematic diagram, embodiments in accordance with the present invention, shown in reference picture 1, device of the present invention includes：Burn spoke for A sides
Penetrate pipe 1, B sides combustion radiant tube 2 and the transition radiation for being attached A sides combustion radiant tube and B sides combustion radiant tube
Pipe 3.Some embodiments of the invention, the concrete shape of radiant tube of the present invention is unrestricted, A sides combustion of the present invention
Burn radiant tube and B sides combustion radiant tube is straight tube, transition radiation pipe is semicircle, A sides combustion radiant tube, the burning of B sides
The internal diameter of radiant tube and transition radiation pipe is 300mm.
Embodiments in accordance with the present invention, shown in reference picture 1, the two ends of the transition radiation pipe are burnt with the A sides respectively
One end of radiant tube and B sides combustion radiant tube is attached, and sky is sequentially provided with the other end of A sides combustion radiant tube
Gas and combustion gas mixing gas entrance/smoke evacuation outlet 4, low-temperature heat accumulating body 5, denitrating catalyst area 6 and porous medium layer area 7, wherein,
The low-temperature heat accumulating body, denitrating catalyst area and porous medium layer area are located at the inside of A sides combustion radiant tube, described porous
The one end in dielectric layer area is provided with electronic ignition device 8 and reducing agent entrance 9, and the electronic ignition device is located at the porous media
The top in floor area and its one end stretch into the porous medium layer area, and the other end is located at the outside of A sides combustion radiant tube, is used for
The air and combustion gas mixing gas are carried out to light burning, the reducing agent entrance is located at the lower section in the porous medium layer area
And its one end stretches into the porous medium layer area, the other end is located at the outside of A sides combustion radiant tube, for being row when A sides
Reducing agent is passed through during cigarette side and flows through the denitrating catalyst area, carry out denitration reaction, reduce the discharge of nitrogen oxides, the B sides
The structure of combustion radiant tube is identical with A sides combustion radiant tube, and the two is axially symmetric along the center of circle of the transition radiation pipe
Set.
Embodiments in accordance with the present invention, air of the present invention and combustion gas mixing gas entrance/smoke evacuation outlet are DN100's
Pipeline；The denitrating catalyst zone length and width are 300mm, for filling denitrating catalyst, are sent out with the reducing agent
Raw denitration reaction；Some embodiments of the invention, the specific material of porous medium layer of the present invention is unrestricted, this hair
The bright aperture that is preferably is the foamed ceramics of 2-4mm, and its zone length is 1500mm, and width is 300mm.
Embodiments in accordance with the present invention, denitrating catalyst is arranged between porous medium layer area and low-temperature heat accumulating body, warp
The flue gas of porous medium layer area outflow, speed is uniform, is conducive to spraying into being sufficiently mixed for reducing agent with the reducing agent entrance, together
When eliminate conventional denitration mode needed for grid, uniform device etc device, due to the arrangement of denitrating catalyst, ensureing steady
On the premise of determining combustion conditions, more conventional porous media radiant tube combustion device is reduced while reducing discharged nitrous oxides
The consumption of porous media.
In another aspect of this invention, there is provided one kind is burnt using multifunctional radiation pipe burner noted earlier
Method, according to this embodiments of the invention, comprise the following steps：The first step：When A sides combustion radiant tube is combustion side, B
Side combustion radiant tube is smoke evacuation side, is passed through to A sides combustion radiant tube through the air and combustion gas mixing gas entrance described
Air and combustion gas mixing gas, the air and combustion gas mixing gas sequentially pass through low-temperature heat accumulating body, denitrating catalyst described in A sides
Area and porous medium layer area.
The power of embodiments in accordance with the present invention, A sides combustion radiant tube and B sides combustion radiant tube is 50-250kw,
The combustion gas is that calorific value is 750 kcal/Nm3Blast furnace gas, specified gas flow be 175Nm3/ h, the coefficient of excess air
It is 1, combustion-supporting air quantity is 125 Nm3/h。
Embodiments in accordance with the present invention, second step：The air and combustion gas mixing gas reach porous medium layer described in A sides
Qu Hou, starts the electronic ignition device, lights the air and combustion gas mixing gas, is fired in the porous medium layer area
The high-temperature flue gas for producing temperature to be 500-1100 DEG C are burnt, high-temperature flue gas enter back into the transition radiation pipe and are heated, then flow
Through and heat the porous medium layer area of the B sides, the high-temperature flue gas are when B sides porous medium layer area and transition radiation pipe is heated
Own temperature reduction.
Embodiments in accordance with the present invention, the 3rd step：When flue gas reaches B side porous medium layer areas, reduced by the B sides
Agent entrance sprays into reducing agent, and the reducing agent enters the B sides denitrating catalyst area together with the flue gas, carries out denitration anti-
Should, flowing through the low-temperature heat accumulating body by reacted flue gas further reduces flue gas own temperature, and last flue gas is with temperature
Low-temperature condition less than 150 DEG C is by outlet discharge of being discharged fume described in B sides.
Embodiments in accordance with the present invention, the 4th step：Through being commutated after a while, B sides combustion radiant tube is combustion
Side is burnt, A sides combustion radiant tube is smoke evacuation side, and working method is identical when being combustion side with A sides combustion radiant tube, and both sides often pass through
Crossing half combustion period carries out alternately reversing combustion/smoke evacuation.
Embodiments in accordance with the present invention, the combustion period is：A sides combustion radiant tube burning-B sides combustion radiant tube row
The combustion radiant tube smoke evacuation of cigarette-B sides combustion radiant tube burning-A sides.
Inventor is had found, according to multifunctional radiation pipe burner of the present invention, is filled using porous media and radiated
Pipe, to adapt to multi-state, big regulation ratio, electrodeless continuously adjustabe improves the uniformity of existing radiant tube surface temperature, while flue gas is de-
Nitre is integrated with porous media radiant tube, the characteristics of with denitration energy-conserving and environment-protective.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described
Structure, material or feature are contained at least one embodiment of the invention or example.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can in an appropriate manner be combined in one or more any embodiments or example.
In the description of the invention, it is to be understood that term " on ", D score, "left", "right", " interior ", " outward " etc. indicate
Orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description the present invention and simplification retouch
State, rather than indicate imply signified device or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.Additionally, term " first ", " second " are only used for describing purpose, without being understood that
To indicate or implying relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ",
One or more this feature can be expressed or be implicitly included to the feature of " second ".In the description of the invention, unless
It is otherwise noted, " multiple " is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Be mechanically connect, or put connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification, simultaneously for those of ordinary skill in the art, according to the think of of the application
Think, will change in specific embodiments and applications.
Claims (8)
1. a kind of multifunctional radiation pipe burner, it is characterised in that including：A sides combustion radiant tube, B sides combustion radiant tube with
And the transition radiation pipe for being attached A sides combustion radiant tube and B sides combustion radiant tube, wherein,
The one end of the two ends of the transition radiation pipe respectively with A sides combustion radiant tube and B sides combustion radiant tube is attached,
Air and combustion gas mixing gas entrance/smoke evacuation outlet, Low Temperature Storage are sequentially provided with the other end of A sides combustion radiant tube
Hot body, denitrating catalyst area and porous medium layer area, wherein, the low-temperature heat accumulating body, denitrating catalyst area and porous medium layer
Area is located at the inside of A sides combustion radiant tube, and the one end in the porous medium layer area is provided with electronic ignition device and reducing agent
Entrance, the electronic ignition device is located at the top in the porous medium layer area and its one end stretches into the porous medium layer area,
The other end is located at the outside of A sides combustion radiant tube, for carrying out the air and combustion gas mixing gas to light burning, institute
Reducing agent entrance is stated positioned at the lower section in the porous medium layer area and its one end stretches into the porous medium layer area, the other end is located at
The outside of A sides combustion radiant tube, the denitrating catalyst area is flowed through for being passed through reducing agent when A sides are for smoke evacuation side, is entered
Row denitration reaction, reduces the discharge of nitrogen oxides, and the structure of B sides combustion radiant tube is identical with A sides combustion radiant tube.
2. multifunctional radiation pipe burner according to claim 1, it is characterised in that A sides combustion radiant tube and B
Side combustion radiant tube is straight tube, and transition radiation pipe is semicircle, A sides combustion radiant tube, B sides combustion radiant tube and transition
The internal diameter of radiant tube is 300mm；A sides combustion radiant tube and B sides combustion radiant tube are axially symmetric along the semicircle center of circle
Set.
3. multifunctional radiation pipe burner according to claim 1, it is characterised in that the air and fuel gas mixture
Body entrance/smoke evacuation outlet is the pipeline of DN100；The denitrating catalyst zone length and width are 300mm, de- for filling
, there is denitration reaction with the reducing agent in denox catalyst；The porous medium layer zone length is 1500mm, and width is 300mm,
It is the foamed ceramics that aperture is 2-4mm.
4. a kind of method that multifunctional radiation pipe burner using described in claim 1-3 is burnt, it is characterised in that
Comprise the following steps：
The first step：When A sides combustion radiant tube is combustion side, B sides combustion radiant tube is smoke evacuation side；Through the air and combustion gas
Mixed gas entrance is passed through the air and combustion gas mixing gas, the air and combustion gas mixing to A sides combustion radiant tube
Gas sequentially passes through low-temperature heat accumulating body described in A sides, denitrating catalyst area and porous medium layer area；
Second step：After the air and combustion gas mixing gas reach porous medium layer area described in A sides, start the electronic ignition dress
Put, light the air and combustion gas mixing gas, carrying out burning in the porous medium layer area produces high-temperature flue gas, high-temperature flue gas
Enter back into the transition radiation pipe and be heated, pass through and heat the porous medium layer area of the B sides, the high-temperature flue gas
The own temperature reduction when B sides porous medium layer area and transition radiation pipe is heated；
3rd step：When flue gas reaches B side porous medium layer areas, reducing agent is sprayed into by the B sides reducing agent entrance, it is described to go back
Former agent enters the B sides denitrating catalyst area together with the flue gas, carries out denitration reaction, and institute is flowed through by reacted flue gas
Stating low-temperature heat accumulating body further reduces flue gas own temperature, and last flue gas is with the state of low temperature by the outlet row that discharged fume described in B sides
Go out；
4th step：Through being commutated after a while, B sides combustion radiant tube is combustion side, and A sides combustion radiant tube is smoke evacuation
Side, working method is identical when being combustion side with A sides combustion radiant tube.
5. method according to claim 4, it is characterised in that the power of A sides combustion radiant tube and B sides combustion radiant tube is
50-250kw, the combustion gas is that calorific value is 750 kcal/Nm3Blast furnace gas, specified gas flow be 175Nm3/ h, the sky
Gas coefficient of excess is 1, and combustion-supporting air quantity is 125 Nm3/h。
6. method according to claim 4, it is characterised in that in the step 2：The temperature of the high-temperature flue gas is
500-1100℃；In the step 3：The temperature of the low-temperature flue gas is less than 150 DEG C.
7. method according to claim 4, it is characterised in that A sides combustion radiant tube and B sides combustion radiant tube are often passed through
Crossing half combustion period carries out alternately reversing combustion/smoke evacuation.
8. method according to claim 7, it is characterised in that the combustion period is：A sides combustion radiant tube burning-B sides
Combustion radiant tube burning-A sides combustion radiant tube the smoke evacuation of combustion radiant tube smoke evacuation-B sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611166367.6A CN106705043A (en) | 2016-12-16 | 2016-12-16 | Multifunctional radiant tube combustion device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611166367.6A CN106705043A (en) | 2016-12-16 | 2016-12-16 | Multifunctional radiant tube combustion device |
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| CN106705043A true CN106705043A (en) | 2017-05-24 |
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| CN201611166367.6A Pending CN106705043A (en) | 2016-12-16 | 2016-12-16 | Multifunctional radiant tube combustion device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109338052A (en) * | 2018-09-29 | 2019-02-15 | 中冶南方（武汉）热工有限公司 | Reduce the radiant tube exhaust system and method for discharged nitrous oxides |
| CN115253634A (en) * | 2022-08-12 | 2022-11-01 | 山东建筑大学 | Flue gas reduction denitration device and method coupling SNCR and SCR |
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| US20020043022A1 (en) * | 2000-10-16 | 2002-04-18 | Warren David W. | Compact endothermic catalytic reaction apparatus |
| WO2009003481A2 (en) * | 2007-07-03 | 2009-01-08 | Heatgear Professional Aps | Catalytic heater |
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| CN104456560A (en) * | 2014-10-22 | 2015-03-25 | 北京神雾环境能源科技集团股份有限公司 | Porous-medium radiation tube |
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| CN109338052A (en) * | 2018-09-29 | 2019-02-15 | 中冶南方（武汉）热工有限公司 | Reduce the radiant tube exhaust system and method for discharged nitrous oxides |
| CN115253634A (en) * | 2022-08-12 | 2022-11-01 | 山东建筑大学 | Flue gas reduction denitration device and method coupling SNCR and SCR |
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