CN103217020B - Device and system for efficient and energy-saving combustion of casting annealing furnace - Google Patents
Device and system for efficient and energy-saving combustion of casting annealing furnace Download PDFInfo
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- CN103217020B CN103217020B CN201310146308.2A CN201310146308A CN103217020B CN 103217020 B CN103217020 B CN 103217020B CN 201310146308 A CN201310146308 A CN 201310146308A CN 103217020 B CN103217020 B CN 103217020B
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- 238000000137 annealing Methods 0.000 title claims abstract description 65
- 238000005266 casting Methods 0.000 title claims abstract description 62
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 13
- 239000002912 waste gas Substances 0.000 claims abstract description 31
- 238000001035 drying Methods 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims description 117
- 239000007789 gas Substances 0.000 claims description 46
- 239000012535 impurity Substances 0.000 claims description 20
- 239000002918 waste heat Substances 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 11
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009123 feedback regulation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses heating processing equipment, and particularly relates to a device and a system for efficient and energy-saving combustion of a casting annealing furnace. The device comprises the casting annealing furnace, a first grade heat exchanger connected with the casting annealing furnace, a second grade heat exchanger arranged on the first grade heat exchanger, and a drying oven connected with the second grade heat exchanger. High-temperature waste gases generated by the casting annealing furnace enter the first grade heat exchanger. The device and the system for efficient and energy-saving combustion of the casting annealing furnace have the advantages of being energy-saving, efficient, environment-friendly, low in heat treatment cost and accurate and convenient to operate.
Description
Technical field
The invention belongs to a kind of Equipment for Heating Processing, particularly the energy-efficient burner of a kind of Casting Annealing Furnace and system.
Background technology
Along with improving constantly and socioeconomic sustainable development of industrial level, people are more and more higher to the protection consciousness of environment and resource, and the energy is fully discharged in atmosphere not only contaminated environment after completing combustion, but also wastes resource.Heat treatment industry is wherein that energy consumption rich and influential family, particularly annealing furnace are cycle stove, and useful load is large, improves the thermal efficiency, reduces heat loss, and the waste heat recovery that utilizes combustion product gases is very important problem.In prior art, heat exchanger mainly adopts barrel type heat exchanger, bayonet-tube exchanger and finned heat exchanger to reclaim the fume afterheat of annealing furnace, but will accomplish enough heat exchange areas in limited space, and fully recovery waste heat is to realize.So can only accomplish at present partially recycled waste heat, cause waste heat to discharge in a large number, the high defect of annealing heat treatment cost.
Summary of the invention
In view of the above problems, the object of the present invention is to provide the energy-efficient burner of a kind of Casting Annealing Furnace and system.
For achieving the above object, the energy-efficient burner of a kind of Casting Annealing Furnace provided by the invention, wherein, this device comprises Casting Annealing Furnace, the first-class heat exchanger being connected with Casting Annealing Furnace and the secondary heat exchanger being provided with in first-class heat exchanger, and the drying oven being connected with secondary heat exchanger.The high-temp waste gas that Casting Annealing Furnace produces enters first-class heat exchanger.Thus, the high-temp waste gas that utilizes Casting Annealing Furnace to produce, after first-class heat exchanger and the heat exchange of secondary heat exchanger two-stage, the waste heat of high-temp waste gas not only can be back in Casting Annealing Furnace, play combustion-supporting and clean-burning object, but also can be supplied to drying oven, reality energy-efficient, recycling and environment, and the low object of heat treatment cost.
In some embodiments, in first-class heat exchanger, be provided with the first air input pipe, on the other end of the first air input pipe, be provided with the first blower fan.In first-class heat exchanger, be provided with the first high temperature air efferent duct of the work that matches with the first air input pipe.On Casting Annealing Furnace, be provided with water-gas input pipe, the intersection of water-gas input pipe and the first high temperature air efferent duct is provided with water-gas and the premixed premixed pipe of high temperature air, and the front end of premixed pipe is provided with to the burner of casting annealing furnace interior flame.First-class heat exchanger and secondary heat exchanger are interconnected.
On secondary heat exchanger, be provided with the second air input pipe, on the other end of the second air input pipe, be provided with the second blower fan, on secondary heat exchanger, be provided with the second high temperature air efferent duct of the work that matches with the second air input pipe.The second high temperature air efferent duct is connected with drying oven.
In some embodiments, first-class heat exchanger one end is communicated with waste gas.One side of first-class heat exchanger is connected with the first air input pipe and the first high temperature air efferent duct respectively.
In some embodiments, secondary heat exchanger one end is connected with first-class heat exchanger, and a side of secondary heat exchanger is connected with the second air input pipe and the second high temperature air efferent duct respectively.On the first-class heat exchanger one end being connected with waste gas, be provided with 3 the first flanges, after first-class heat exchanger and secondary heat exchanger energy exchange, on secondary heat exchanger one end, be provided with outlet, on outlet, be provided with 3 the second flanges.The first flange is connected with Casting Annealing Furnace, on the second flange, is provided with blast pipe, is provided with cleaning entrance in first-class heat exchanger, is provided with washing outlet on secondary heat exchanger.Clean on entrance and be connected with cleaning machine.In the time that first-class heat exchanger and secondary heat exchanger need to clean, the spacer flanger in 3 the first flanges is blind flange, and the spacer flanger in 3 the second flanges is blind flange.Thus, 3 the first flanges and the second flange adopt the structure of this three-layer process orchid, and upper and lower two-layer flange is the structure being welded and fixed with first-class heat exchanger and Casting Annealing Furnace or secondary heat exchanger and blast pipe respectively.Only have the flange in intermediate layer upper and lower two-layer flange can be separated, having like this benefit is exactly to solve the defect that heat exchanger is not easy to clean.Intermediate layer flange after spliting is changed to cecutiency method flange, in the situation that now import and export of first-class heat exchanger and secondary heat exchanger are blocked, by cleaning machine, cleaning fluid is poured into first-class heat exchanger and secondary heat exchanger inside is cleaned from cleaning entrance, afterwards again by the dirt after cleaning from washing outlet.Realize the object that convenience is cleaned.
In some embodiments, the first high temperature air efferent duct comprises that the T shape isocon being connected with first-class heat exchanger, the first bar shaped pipe being connected respectively with T shape isocon two ends and many articles are arranged side by side on the first bar shaped pipe and by high temperature air and inputs the first wireway in Casting Annealing Furnace.
Water-gas input pipe comprises the 2nd T shape isocon of water-gas connection, the second bar shaped pipe and many articles of the second wireways that are arranged side by side on the second bar shaped pipe that are connected respectively with the 2nd T shape isocon two ends.The first wireway is connected with premixed pipe, and the second wireway is connected with premixed pipe.The second high temperature air efferent duct comprises the 3rd T shape isocon that is connected with secondary heat exchanger, is provided with many articles side by side to the 3rd wireway of inputting high temperature air in drying oven with T shape isocon both sides.Thus, the premixed in premixed pipe by high temperature air and water-gas, is sprayed by burner afterwards again, has solved the problem that in prior art, premixed sprays at burner front end, and such structure burning is more abundant, has realized environmental protection more and energy-conservation object.
In some embodiments, also comprise the control device that above-mentioned air is monitored in real time and operated.
In some embodiments, control device comprises controller, be connected with controller and on the first air input pipe, be provided with the first flow monitoring element for monitoring air regime in the first air input pipe, the first monitoring mouthful that is connected with controller and is respectively equipped with on a T shape isocon and the first bar shaped pipe, the second monitoring mouthful that is connected with controller and is provided with on premixed pipe, the the second flow monitoring element that is connected with controller and is provided with on water-gas input pipe, the 3rd monitoring mouthful that is connected with controller and is provided with on Casting Annealing Furnace, the 3rd traffic monitoring element that is connected with controller and is provided with on the second air input pipe, the 4th monitoring mouth being connected with controller and be provided with on the 3rd T shape isocon and the 5th monitoring mouthful that is connected with controller and is provided with on blast pipe.Thus, flow, an impurity content that control device can monitor water-gas and air by each monitoring element and monitoring mouth carry out flue gas to be analyzed, and control combustion ratio automatically, has realized easy to operate, accurate technique effect.
Another object of the present invention is to provide a kind of Casting Annealing Furnace efficient and energy-saving combustion system, comprising air flow system and control monitoring system.
In some embodiments, air flow system is that normal temperature air will be realized through two-stage heat exchange, specific as follows:
Below one-level heat exchange,
(1) high-temp waste gas that Casting Annealing Furnace produces enters from the below of first-class heat exchanger, wherein has the waste gas of part high temperature to discharge to flowing to discharge pipe from first-class heat exchanger one side;
(2) simultaneously, the first blower fan pours into normal temperature air by the first air input pipe in first-class heat exchanger, and through the heat exchange action of first-class heat exchanger, the normal temperature air pouring into has converted the air of high temperature out to from the first high temperature air efferent duct;
(3) air of high temperature from a T shape isocon out, be diverted to the first bar shaped pipe at two ends, the air of high temperature is input to premixed pipe by the first each branch of wireway on the first bar shaped pipe;
(4) synchronize with (3), water-gas pours into from the 2nd T shape isocon, be diverted to the second bar shaped pipe at two ends, the air that water-gas is input to premixed pipe and high temperature by the second each branch of wireway on the second bar shaped pipe carries out premixed, is sprayed onto on the foundry goods in Casting Annealing Furnace afterwards by burner;
Below secondary heat exchange,
(1) waste gas of discharging from first-class heat exchanger, although there is part thermal losses after heat exchange, also has the heat of part to utilize, and this part waste heat waste gas enters from the below of secondary heat exchanger;
(2) simultaneously, the second blower fan pours into normal temperature air by the second air input pipe in secondary heat exchanger, through the waste heat waste gas heat exchange interaction in secondary heat exchanger, the normal temperature air pouring into has converted the air of high temperature out to from the second high temperature air efferent duct;
(3) afterwards, the high temperature air in the middle of (2) is diverted to each branch of the 3rd wireway by the 3rd T shape isocon;
(4) last, high temperature air is blown into drying oven through the 3rd wireway of each branch.
In some embodiments, controlling monitoring system is to regulate and control conveying capacity by air in monitoring air flow system containing flow, the impurity content of composition;
First flow monitoring element is the normal temperature air feed flow of monitoring the first air input pipe and the control element of impurity content;
The first monitoring mouthful is the monitoring mouth of the high temperature air flow of monitoring the first high temperature air efferent duct output;
The second monitoring mouthful is that high temperature air and the water-gas in monitoring premixed pipe mixes the monitoring mouth of situation;
The second flow monitoring element is the monitoring feed flow of water-gas and the control element of impurity content;
The 3rd monitoring mouthful is that monitoring Casting Annealing Furnace wife burns the monitoring mouth of situation;
The 3rd traffic monitoring element is the normal temperature air feed flow of monitoring the second air input pipe and the control element of impurity content;
The 4th monitoring mouthful is the monitoring mouth of the high temperature air flow of monitoring the second high temperature air efferent duct output;
The 5th monitoring mouthful is the exhaust gas flow of monitoring blast pipe discharge and the monitoring mouth of impurity content.
The beneficial effect that the present invention realizes is:
1, cascaded utilization of energy system, after first-class heat exchanger and the heat exchange of secondary heat exchanger two-stage, obtains respectively the combustion-supporting high temperature air of 350 DEG C of left and right and the hot-air seasoning high temperature air of 150 DEG C of left and right.
2, premixed combustion mode, is arranged on burner rear end by premixed pipe, makes the first premixed in premixed pipe of water-gas body of ejection, and water-gas burning is more abundant, i.e. environmental protection more, efficient and energy-conservation.
3, automatic control combustion ratio, monitors data, the ratio of automatic governing air and water-gas by controller and each monitoring element with monitoring mouth.
4, controller can be analyzed smoke components and content, analyzes the component content in flue gas according to controller, and the content of for example analyzing carbon monoxide determines to adjust the supply of air, the ratio of feedback regulation fire gas and air.
5, first flow monitoring element, the second flow monitoring element and the 3rd traffic monitoring element are housed on water-gas and air input pipe, the function of these monitoring element tool control valves, can regulate according to uninterrupted, makes each piping flow uniformity.
6, utilize the structure of high combustion rate burner, the burner hearth concentration of Casting Annealing Furnace is even, raises fast, reduces burn out rate.
7, heat exchanger adopts the ingehious design combining with flange, is replaced with the mode of blind flange by dismounting spacer flanger, reaches convenient object of cleaning heat exchanger.
Brief description of the drawings
Fig. 1 is the structural representation of the energy-efficient burner of Casting Annealing Furnace of an embodiment of the present invention;
Fig. 2 is the structural representation of first-class heat exchanger shown in Fig. 1;
Fig. 3 is the structural representation of secondary heat exchanger shown in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, invention is described in further detail.
As shown in Figure 1 to Figure 3, the energy-efficient burner of a kind of Casting Annealing Furnace, the first-class heat exchanger 2 that comprises Casting Annealing Furnace 1, be communicated with Casting Annealing Furnace 1 and the secondary heat exchanger 3 being provided with in first-class heat exchanger 2, and the drying oven 4 being communicated with secondary heat exchanger 3, the waste gas that Casting Annealing Furnace 1 produces enters first-class heat exchanger 2.
In first-class heat exchanger 2, be provided with the first air input pipe 5, on the other end of the first air input pipe 5, be provided with the first blower fan 6, in first-class heat exchanger 2, be provided with the first high temperature air efferent duct 7 of the work that matches with the first air input pipe 5.On Casting Annealing Furnace 1, be provided with water-gas input pipe 8, the intersection of water-gas input pipe 8 and the first high temperature air efferent duct 7 is provided with water-gas and the premixed premixed pipe 9 of high temperature air.The front end of premixed pipe 9 is provided with to the burner 10 of Casting Annealing Furnace 1 inner flame.First-class heat exchanger 2 is interconnected with secondary heat exchanger 3.
On secondary heat exchanger 3, be provided with the second air input pipe 11, on the other end of the second air input pipe 11, be provided with the second blower fan 12, on secondary heat exchanger 3, be provided with the second high temperature air efferent duct 13 of the work that matches with the second air input pipe 11.The second high temperature air efferent duct 13 is connected with drying oven 4.
First-class heat exchanger 2 one end are communicated with waste gas, and the other end is connected with secondary heat exchanger 3, and a side of first-class heat exchanger 2 is connected with the first air input pipe 5 and the first high temperature air efferent duct 7 respectively.
Secondary heat exchanger 3 one end are connected with first-class heat exchanger 2, and a side of secondary heat exchanger 3 is connected with the second air input pipe 11 and the second high temperature air efferent duct 13 respectively.On first-class heat exchanger 2 one end that are connected with waste gas, be provided with 3 the first flanges 32, after first-class heat exchanger and secondary heat exchanger 3 energy exchanges, on secondary heat exchanger 3 one end, be provided with outlet, on outlet, be provided with 3 the second flanges 33.The first flange 32 is connected with Casting Annealing Furnace 1, on the second flange 33, is provided with blast pipe 14, is provided with and cleans entrance 34 in first-class heat exchanger 2, is provided with washing outlet 35 on secondary heat exchanger 3.Clean on entrance 34 and be connected with cleaning machine 37.In the time that first-class heat exchanger 2 and secondary heat exchanger 3 need to clean, the spacer flanger 36 in 3 the first flanges is blind flanges, and the spacer flanger 36 in 3 the second flanges is blind flanges.
The first high temperature air efferent duct 7 comprises that the T shape isocon 15 being connected with first-class heat exchanger 2, the first bar shaped pipe 16 being connected respectively with T shape isocon 15 two ends and many articles are arranged side by side the first wireway 17 of inputting on the first bar shaped pipe 16 and by high temperature air in Casting Annealing Furnace 1.Water-gas input pipe 8 comprises the 2nd T shape isocon 18 of water-gas connection, the second bar shaped pipe 19 and many articles of the second wireways 20 that are arranged side by side on the second bar shaped pipe 19 that are connected respectively with the 2nd T shape isocon 18 two ends.The first wireway 17 is connected with premixed pipe 9, and the second wireway 20 is connected with premixed pipe 9.The second high temperature air efferent duct 13 comprises the 3rd T shape isocon 21 that is connected with secondary heat exchanger 3, is provided with many articles side by side to the 3rd wireway 22 of the interior input high temperature air of drying oven 4 with T shape isocon 15 both sides.
Also comprise the control device that above-mentioned air is monitored in real time and operated.Control device comprises controller 24, be connected with controller 24 and on the first air input pipe 5, be provided with the first flow monitoring element 25 for monitoring the first air input pipe 5 interior air regimes, the the first monitoring mouth 26 that is connected with controller 24 and is respectively equipped with on a T shape isocon 15 and the first bar shaped pipe 16, the the second monitoring mouth 27 that is connected with controller 24 and is provided with on premixed pipe 9, the the second flow monitoring element 28 that is connected with controller 24 and is provided with on water-gas input pipe 8, the 3rd monitoring mouth 29 that is connected with controller 24 and is provided with on Casting Annealing Furnace 1, the 3rd traffic monitoring element 30 that is connected with controller 24 and is provided with on the second air input pipe 11, the 4th monitoring mouth 31 being connected with controller 24 and be provided with on the 3rd T shape isocon 21 and the 5th monitoring mouth 23 that is connected with controller 24 and is provided with on blast pipe 14.
A kind of Casting Annealing Furnace efficient and energy-saving combustion system, comprises air flow system and controls monitoring system.Air flow system is utilized normal temperature air, and through two-stage, heat exchange realizes, specific as follows:
Be below one-level heat exchange, the high-temp waste gas that (1) Casting Annealing Furnace 1 produces enters from the below of first-class heat exchanger 2, wherein has the waste gas of part high temperature to discharge to flowing to discharge pipe from first-class heat exchanger 2 one sides; (2) simultaneously, the first blower fan 6 pours into normal temperature air by the first air input pipe 5 in first-class heat exchanger 2, and through the heat exchange action of first-class heat exchanger 2, the normal temperature air pouring into has converted the air of high temperature out to from the first high temperature air efferent duct 7; (3) air of high temperature from a T shape isocon 15 out, be diverted to the first bar shaped pipe 16 at two ends, the air of high temperature is input to premixed pipe 9 by the first each branch of wireway 17 on the first bar shaped pipe 16; (4) synchronize with (3), water-gas pours into from the 2nd T shape isocon 18, be diverted to the second bar shaped pipe 19 at two ends, the second each branch of wireway 20 on the second bar shaped pipe 19 is input to premixed pipe 9 by water-gas and carries out premixed with the air of high temperature, is sprayed onto on the foundry goods in Casting Annealing Furnace 1 afterwards by burner 10.
Be below secondary heat exchange, the waste gas that discharge from first-class heat exchanger 2 (1), although there is part thermal losses after heat exchange, also has the heat of part to utilize, and this part waste heat waste gas enters from the below of secondary heat exchanger 3; (2) simultaneously, the second blower fan 12 pours into normal temperature air by the second air input pipe 11 in secondary heat exchanger 3, through the waste heat waste gas heat exchange interaction in secondary heat exchanger 3, the normal temperature air pouring into has converted the air of high temperature out to from the second high temperature air efferent duct 13; (3) afterwards, the high temperature air in the middle of (2) is diverted to each branch of the 3rd wireway 22 by the 3rd T shape isocon 21; (4) last, high temperature air is blown into drying oven 4 through the 3rd wireway 22 of each branch.
Controlling monitoring system is to regulate and control conveying capacity by air in monitoring air flow system containing flow, the impurity content of composition.First flow monitoring element 25 is monitored the normal temperature air feed flow of the first air input pipe 5 and the control element of impurity content.The first monitoring mouth 26 is high temperature air traffic monitoring mouths that monitoring the first high temperature air efferent duct 7 is exported.The second monitoring mouth 27 is that high temperature air and the water-gas in monitoring premixed pipe 9 mixes the monitoring mouth of situation.The second flow monitoring element 28 is the monitoring feed flow of water-gas and the control element of impurity content.The 3rd monitoring mouth 29 is that monitoring Casting Annealing Furnace 1 wife burns the monitoring mouth of situation.The 3rd traffic monitoring element 30 is the normal temperature air feed flow of monitoring the second air input pipe 11 and the control element of impurity content.The 4th monitoring mouth 31 is high temperature air traffic monitoring mouths that monitoring the second high temperature air efferent duct 13 is exported.The 5th monitoring mouthfuls 23 is monitoring blast pipe 14 exhaust gas flow of discharging and the monitoring mouth of impurity content.
Concrete application is as follows:
The high-temp waste gas that Casting Annealing Furnace 1 produces is from the below of first-class heat exchanger 2 enters.The first blower fan 6 pours into normal temperature air by the first air input pipe 5 in first-class heat exchanger 2 simultaneously, and controller 24 monitors after the normal temperature air feed flow and impurity content of the first air input pipe 5 by first flow monitoring element 25, allocates.The normal temperature air pouring into, through the heat exchange action of first-class heat exchanger 2, has converted the air of high temperature out to from the first high temperature air efferent duct 7.Controller 24 monitors by the first monitoring mouth 26 the high temperature air flow that the first high temperature air efferent duct 7 is exported.In addition, the high temperature air of carrying the water-gas of coming and the first high temperature air efferent duct 7 to export from water-gas input pipe 8 carries out premixed in premixed pipe 9, is sprayed onto on the foundry goods in Casting Annealing Furnace 1 afterwards by burner 10.Controller 24 now by the second flow monitoring element 28 feed flow and the impurity content to water-gas monitor, and monitor by the high temperature air in 27 pairs of premixed pipes 9 of the second monitoring mouth and water-gas mixing situation, then allocated by controller 24.
The high temperature air of then discharging from first-class heat exchanger 2 is exactly part of waste heat waste gas, enters the below of secondary heat exchanger 3.Meanwhile, the second blower fan 12 pours into normal temperature air by the second air input pipe 11 in secondary heat exchanger 3, and controller 24 monitors after the normal temperature air feed flow and impurity content of the second air input pipe 11 by the 3rd traffic monitoring element 30, allocates.Through the waste heat waste gas heat exchange interaction in secondary heat exchanger 3, converted the air of high temperature out to from the second high temperature air efferent duct 13, be finally blown into drying oven 4.Controller 24, by the 4th monitoring mouthful high temperature air flow that 31 monitoring the second high temperature air efferent ducts 13 are exported, is then allocated.
In addition, controller 24, by the 5th monitoring mouthful exhaust gas flow and impurity content that 23 monitoring blast pipes 14 are discharged, carries out flow and other allotments.For example, the content of the waste gas carbon monoxide of discharging when blast pipe 14 is many, proves that the burning in Casting Annealing Furnace 1 is insufficient, and controller 24 can be controlled first flow monitoring elements 25 and the 3rd traffic monitoring element 30 increases the flow of air.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to the protection domain of invention.
Claims (8)
1. the energy-efficient burner of Casting Annealing Furnace, is characterized in that, this device comprises Casting Annealing Furnace, the first-class heat exchanger being connected with Casting Annealing Furnace and the secondary heat exchanger being provided with in first-class heat exchanger, and the drying oven being connected with secondary heat exchanger; The waste gas that described Casting Annealing Furnace produces enters first-class heat exchanger;
In described first-class heat exchanger, be provided with the first air input pipe, on the other end of the first air input pipe, be provided with the first blower fan; In described first-class heat exchanger, be provided with the first high temperature air efferent duct of the work that matches with the first air input pipe;
On described Casting Annealing Furnace, be provided with water-gas input pipe;
Described water-gas input pipe and the intersection of the first high temperature air efferent duct are provided with water-gas and the premixed premixed pipe of high temperature air; On described premixed pipe, be provided with to the burner of casting annealing furnace interior flame;
Described first-class heat exchanger and secondary heat exchanger are interconnected;
On described secondary heat exchanger, be provided with the second air input pipe, on the other end of the second air input pipe, be provided with the second blower fan; On described secondary heat exchanger, be provided with the second high temperature air efferent duct of the work that matches with the second air input pipe;
The second described high temperature air efferent duct is connected with drying oven.
2. the energy-efficient burner of a kind of Casting Annealing Furnace according to claim 1, is characterized in that, described first-class heat exchanger one end is communicated with waste gas, and the other end is connected with secondary heat exchanger;
One side of described first-class heat exchanger is connected with the first air input pipe and the first high temperature air efferent duct respectively.
3. the energy-efficient burner of a kind of Casting Annealing Furnace according to claim 2, is characterized in that, described secondary heat exchanger one end is connected with first-class heat exchanger;
One side of described secondary heat exchanger is connected with the second air input pipe and the second high temperature air efferent duct respectively;
On described first-class heat exchanger one end being connected with waste gas, be provided with 3 the first flanges;
After first-class heat exchanger and secondary heat exchanger energy exchange, on secondary heat exchanger one end, be provided with outlet, on described outlet, be provided with 3 the second flanges;
The first described flange is connected with Casting Annealing Furnace;
On the second described flange, be provided with blast pipe;
In described first-class heat exchanger, be provided with cleaning entrance, on secondary heat exchanger, be provided with washing outlet; On described cleaning entrance, be connected with cleaning machine; In the time that first-class heat exchanger and secondary heat exchanger need to clean, the spacer flanger in 3 described the first flanges is blind flange, and the spacer flanger in 3 described the second flanges is blind flange.
4. the energy-efficient burner of a kind of Casting Annealing Furnace according to claim 1, it is characterized in that, the first described high temperature air efferent duct comprises that the T shape isocon being connected with first-class heat exchanger, the first bar shaped pipe being connected respectively with T shape isocon two ends and many articles are arranged side by side on the first bar shaped pipe and by high temperature air and inputs the first wireway in Casting Annealing Furnace;
Water-gas input pipe comprises the 2nd T shape isocon of water-gas connection, the second bar shaped pipe and many articles of the second wireways that are arranged side by side on the second bar shaped pipe that are connected respectively with the 2nd T shape isocon two ends;
The first described wireway is connected with premixed pipe;
The second described wireway is connected with premixed pipe;
The second described high temperature air efferent duct comprises the 3rd T shape isocon that is connected with secondary heat exchanger, is provided with many articles side by side to the 3rd wireway of inputting high temperature air in drying oven with the 3rd T shape isocon both sides.
5. the energy-efficient burner of a kind of Casting Annealing Furnace according to claim 4, is characterized in that, also comprises the control device that above-mentioned air is monitored in real time and operated.
6. the energy-efficient burner of a kind of Casting Annealing Furnace according to claim 5, it is characterized in that, described control device comprises controller, be connected with controller and on the first air input pipe, be provided with the first flow monitoring element for monitoring air regime in the first air input pipe, the first monitoring mouthful that is connected with controller and is respectively equipped with on a T shape isocon and the first bar shaped pipe, the second monitoring mouthful that is connected with controller and is provided with on premixed pipe, the the second flow monitoring element that is connected with controller and is provided with on water-gas input pipe, the 3rd monitoring mouthful that is connected with controller and is provided with on Casting Annealing Furnace, the 3rd traffic monitoring element that is connected with controller and is provided with on the second air input pipe, the 4th monitoring mouth being connected with controller and be provided with on the 3rd T shape isocon and the 5th monitoring mouthful that is connected with controller and is provided with on blast pipe.
7. a Casting Annealing Furnace efficient and energy-saving combustion system, is characterized in that, comprises air flow system and controls monitoring system;
Described air flow system is utilized normal temperature air, and through two-stage, heat exchange realizes, specific as follows:
Below one-level heat exchange,
(1) high-temp waste gas that Casting Annealing Furnace produces enters from the below of first-class heat exchanger, wherein has the waste gas of part high temperature to discharge to flowing to discharge pipe from first-class heat exchanger one side;
(2) simultaneously, the first blower fan pours into normal temperature air by the first air input pipe in first-class heat exchanger, and through the heat exchange action of first-class heat exchanger, the normal temperature air pouring into has converted the air of high temperature out to from the first high temperature air efferent duct;
(3) air of high temperature from a T shape isocon out, be diverted to the first bar shaped pipe at two ends, the air of high temperature is input to premixed pipe by the first each branch of wireway on the first bar shaped pipe;
(4) synchronize with (3), water-gas pours into from the 2nd T shape isocon, be diverted to the second bar shaped pipe at two ends, the air that water-gas is input to premixed pipe and high temperature by the second each branch of wireway on the second bar shaped pipe carries out premixed, is sprayed onto on the foundry goods in Casting Annealing Furnace afterwards by burner;
Below secondary heat exchange,
(1) waste gas of discharging from first-class heat exchanger, although there is part thermal losses after heat exchange, also has the heat of part to utilize, and this part waste heat waste gas enters from the below of secondary heat exchanger;
(2) simultaneously, the second blower fan pours into normal temperature air by the second air input pipe in secondary heat exchanger, through the waste heat waste gas heat exchange interaction in secondary heat exchanger, the normal temperature air pouring into has converted the air of high temperature out to from the second high temperature air efferent duct;
(3) afterwards, the high temperature air in the middle of (2) is diverted to each branch of the 3rd wireway by the 3rd T shape isocon;
(4) last, high temperature air is blown into drying oven through the 3rd wireway of each branch.
8. a kind of Casting Annealing Furnace efficient and energy-saving combustion system according to claim 7, is characterized in that, described control monitoring system is to regulate and control conveying capacity by air in monitoring air flow system containing flow, the impurity content of composition;
First flow monitoring element is the normal temperature air feed flow of monitoring the first air input pipe and the control element of impurity content;
The first monitoring mouthful is the monitoring mouth of the high temperature air flow of monitoring the first high temperature air efferent duct output;
The second monitoring mouthful is that high temperature air and the water-gas in monitoring premixed pipe mixes the monitoring mouth of situation;
The second flow monitoring element is the monitoring feed flow of water-gas and the control element of impurity content;
The 3rd monitoring mouthful is that monitoring Casting Annealing Furnace wife burns the monitoring mouth of situation;
The 3rd traffic monitoring element is the normal temperature air feed flow of monitoring the second air input pipe and the control element of impurity content;
The 4th monitoring mouthful is the monitoring mouth of the high temperature air flow of monitoring the second high temperature air efferent duct output;
The 5th monitoring mouthful is the exhaust gas flow of monitoring blast pipe discharge and the monitoring mouth of impurity content.
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| JP5407291B2 (en) * | 2008-11-17 | 2014-02-05 | アイシン精機株式会社 | Heat treatment method and heat treatment apparatus |
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