CN103217020A - 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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- CN103217020A CN103217020A CN2013101463082A CN201310146308A CN103217020A CN 103217020 A CN103217020 A CN 103217020A CN 2013101463082 A CN2013101463082 A CN 2013101463082A CN 201310146308 A CN201310146308 A CN 201310146308A CN 103217020 A CN103217020 A CN 103217020A
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- 238000000137 annealing Methods 0.000 title claims abstract description 67
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 12
- 238000005266 casting Methods 0.000 title abstract 6
- 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
- 238000004140 cleaning Methods 0.000 claims description 13
- 239000002918 waste heat Substances 0.000 claims description 13
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000001360 synchronised effect Effects 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
- 230000002950 deficient Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000012530 fluid 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
- 238000011161 development Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 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
- 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
- 230000001105 regulatory effect Effects 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
- 238000003466 welding Methods 0.000 description 1
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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, energy-efficient burner of particularly a kind of foundry goods annealing furnace and system.
Background technology
Along with improving constantly and sustainable development of social economy of industrial level, people are more and more higher to the protection of environment and resource consciousness, and the energy fully is discharged in the atmosphere not only contaminated environment after the completing combustion, but also wastes resource.Heat treatment industry wherein is that energy consumption rich and influential family, particularly annealing furnace are the cycle stove, and useful load is big, improves the thermal efficiency, reduces heat loss, and the waste heat recovery that utilizes combustion product gases is very important problem.Heat exchanger mainly adopts barrel type heat exchanger, bayonet-tube exchanger and finned heat exchanger to reclaim the fume afterheat of annealing furnace in the prior art, but will accomplish enough heat exchange areas in limited space, and fully recovery waste heat is to realize.So can only accomplish partially recycled waste heat at present, cause waste heat to discharge in a large number, the high defective of annealing heat treatment cost.
Summary of the invention
In view of the above problems, the object of the present invention is to provide energy-efficient burner of a kind of foundry goods annealing furnace and system.
For achieving the above object, the energy-efficient burner of a kind of foundry goods annealing furnace provided by the invention, wherein, this device comprises foundry goods annealing furnace, the first-class heat exchanger that is connected with the foundry goods annealing furnace and the secondary heat exchanger that is provided with on first-class heat exchanger, and the drying oven that is connected with secondary heat exchanger.The high-temp waste gas that the foundry goods annealing furnace produces enters first-class heat exchanger.Thus, the high-temp waste gas that utilizes the foundry goods annealing furnace to produce, after first-class heat exchanger and the heat exchange of secondary heat exchanger two-stage, make the waste heat of high-temp waste gas not only can be back in the foundry goods annealing furnace, play combustion-supporting and clean-burning purpose, but also can be supplied to drying oven, reality energy-efficient, utilize and environment and the low purpose of heat treatment cost again.
In some embodiments, first-class heat exchanger is provided with the first air input pipe, and the other end of the first air input pipe is provided with first blower fan.First-class heat exchanger is provided with the first high temperature air efferent duct of the work that matches with the first air input pipe.The foundry goods annealing furnace is provided with the water-gas input pipe, and the intersection of the 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 the burner to the inner flame of foundry goods annealing furnace.First-class heat exchanger and secondary heat exchanger are interconnected.
Secondary heat exchanger is provided with the second air input pipe, and the other end of the second air input pipe is provided with second blower fan, and secondary heat exchanger is 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 high temperature air efferent duct with the first air input pipe 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 high temperature air efferent duct with the second air input pipe respectively.First-class heat exchanger one end that is connected with waste gas is provided with 3 first flanges, and through being provided with outlet after first-class heat exchanger and the secondary heat exchanger energy exchange on secondary heat exchanger one end, outlet is provided with 3 second flanges.First flange is connected with the foundry goods annealing furnace, and second flange is provided with blast pipe, and first-class heat exchanger is provided with cleans inlet, and secondary heat exchanger is provided with washing outlet.Clean on the inlet and be connected with cleaning machine.When first-class heat exchanger and secondary heat exchanger need clean, the spacer flanger in 3 first flanges was a blind flange, and the spacer flanger in 3 second flanges is a blind flange.Thus, 3 first flanges and second flange adopt the structure of this three-layer process orchid, promptly up and down two-layer flange be respectively with first-class heat exchanger and foundry goods annealing furnace or secondary heat exchanger and the fixing structure of blast pipe welding.Have only the flange in intermediate layer two-layer flange up and down can be separated, it is exactly to solve the defective that heat exchanger is not easy to clean that a benefit is arranged like this.Intermediate layer flange after spliting is changed cecutiency method flange, at this moment under the situation that the import and export of first-class heat exchanger and secondary heat exchanger are blocked, by cleaning machine with cleaning fluid from cleaning inlet and pour into first-class heat exchanger and secondary heat exchanger inside being cleaned, the dirt after will cleaning again afterwards is from washing outlet.Realized the purpose that convenience is cleaned.
In some embodiments, the first high temperature air efferent duct comprises the T shape isocon that is connected with first-class heat exchanger, the first bar shaped pipe that is connected respectively with T shape isocon two ends and many are arranged side by side first wireway of importing in the foundry goods annealing furnace on the first bar shaped pipe and with high temperature air.
The second bar shaped pipe and many second wireways that are arranged side by side on the second bar shaped pipe that the water-gas input pipe comprises the 2nd T shape isocon that water-gas connects, is connected respectively with the 2nd T shape isocon two ends.First wireway is connected with the premixed pipe, and second wireway is connected with the 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 3rd wireways of giving input high temperature air in the drying oven side by side with T shape isocon both sides.Thus, the premixed in the premixed pipe by high temperature air and water-gas again by the burner ejection, has solved the problem that premixed sprays at the burner front end in the prior art afterwards, and such structure burning is more abundant, has realized environmental protection more and purpose of energy saving.
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 that is used to monitor air regime in the first air input pipe, the first monitoring mouth that is connected with controller and on a T shape isocon and the first bar shaped pipe, is respectively equipped with, the second monitoring mouth that is connected with controller and on the premixed pipe, is provided with, the second traffic monitoring element that is connected with controller and on the water-gas input pipe, is provided with, the 3rd monitoring mouth that is connected with controller and on the foundry goods annealing furnace, is provided with, the 3rd traffic monitoring element that is connected with controller and on the second air input pipe, is provided with, the 4th monitoring mouth that is connected with controller and on the 3rd T shape isocon, is provided with and the 5th monitoring mouth that is connected with controller and on blast pipe, is provided with.Thus, control device can carry out flue gas by flow, the impurity content that each monitoring element and monitoring mouth monitor water-gas and air to be analyzed, and controls the burning ratio automatically, has realized easy to operate, accurate technique effect.
Another object of the present invention provides a kind of foundry goods annealing furnace efficient and energy-saving combustion system, comprising air flow system and control monitoring system.
In some embodiments, the air flow system is that normal temperature air will be realized through the two-stage heat exchange, and is specific as follows:
Below be the one-level heat exchange,
(1) high-temp waste gas of foundry goods annealing furnace generation 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, 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 that pours into is from having converted the air of high temperature after the first high temperature air efferent duct comes out to;
(3) after the air of high temperature comes out from a T shape isocon, be diverted to the first bar shaped pipe at two ends, each branch of first wireway on the first bar shaped pipe is input to the premixed pipe with the air of high temperature;
(4) synchronous with (3), water-gas pours into from the 2nd T shape isocon, be diverted to the second bar shaped pipe at two ends, each branch of second wireway on the second bar shaped pipe carries out premixed with the air that water-gas is input to premixed pipe and high temperature, is sprayed onto on the foundry goods in the foundry goods annealing furnace by burner afterwards;
Below be the secondary heat exchange,
(1) waste gas of discharging from first-class heat exchanger though through after the heat exchange part thermal losses is arranged, 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, second blower fan pours into normal temperature air by the second air input pipe in secondary heat exchanger, and through the waste heat waste gas heat exchange interaction in the secondary heat exchanger, the normal temperature air that pours into is from having converted the air of high temperature after the second high temperature air efferent duct comes out to;
(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, the control monitoring system is to regulate and control conveying capacity by flow, impurity content that air in the monitoring air flow system contains composition;
The first flow monitoring element is the normal temperature air feed flow of the monitoring first air input pipe and the control element of impurity content;
The first monitoring mouth is the monitoring mouth of the high temperature air flow of monitoring first high temperature air efferent duct output;
The second monitoring mouth is that high temperature air and the water-gas in the monitoring premixed pipe mixes the monitoring mouth of situation;
The second traffic monitoring element is the feed flow of monitoring water-gas and the control element of impurity content;
The 3rd monitoring mouth is that monitoring foundry goods annealing furnace wife burns the monitoring mouth of situation;
The 3rd traffic monitoring element is the normal temperature air feed flow of the monitoring second air input pipe and the control element of impurity content;
The 4th monitoring mouth is the monitoring mouth of the high temperature air flow of monitoring second high temperature air efferent duct output;
The 5th monitoring mouth 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 combustion-supporting high temperature air about 3500C and the hot-air seasoning high temperature air about 1500C respectively.
2, premixed combustion mode is arranged on the burner rear end with the premixed pipe, makes the at first premixed in the premixed pipe of water-gas body of ejection, and the water-gas burning is more abundant, i.e. environmental protection more, efficient and energy-conservation.
3, control the burning ratio automatically, monitor data, the ratio of allocating air and water-gas automatically with the monitoring mouth by controller and each monitoring element.
4, controller can be analyzed smoke components and content, and according to the component content in the controller analysis flue gas, the supply of air, the ratio of feedback regulation fire gas and air are adjusted in the content decision of for example analyzing carbon monoxide.
5, first flow monitoring element, the second traffic monitoring element and the 3rd traffic monitoring element are housed on water-gas and the air input pipe, the function of these monitoring element tool control valves can be regulated according to the flow size, makes each piping flow uniformity.
6, utilize the structure of high combustion rate burner, the burner hearth concentration of foundry goods annealing furnace is even, and it is fast to raise, and reduces burn out rate.
7, heat exchanger adopts the ingenious design combine with flange, is replaced with the mode of blind flange by the dismounting spacer flanger, reaches the purpose of convenient cleaning heat exchanger.
Description of drawings
Fig. 1 is the structural representation of the energy-efficient burner of foundry goods annealing furnace of an embodiment of the present invention;
Fig. 2 is the structural representation of first-class heat exchanger shown in Figure 1;
Fig. 3 is the structural representation of secondary heat exchanger shown in Figure 1.
The specific embodiment
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 foundry goods annealing furnace, comprise foundry goods annealing furnace 1, the first-class heat exchanger 2 that is communicated with foundry goods annealing furnace 1 and the secondary heat exchanger 3 that on first-class heat exchanger 2, is provided with, and the drying oven 4 that is communicated with secondary heat exchanger 3, the waste gas that foundry goods annealing furnace 1 produces enters first-class heat exchanger 2.
The other end that first-class heat exchanger 2 is provided with the first air input pipe, 5, the first air input pipes 5 is provided with first blower fan 6, and first-class heat exchanger 2 is provided with the first high temperature air efferent duct 7 of the work that matches with the first air input pipe 5.Foundry goods annealing furnace 1 is provided with water-gas input pipe 8, and the intersection of the 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 the burner 10 to foundry goods annealing furnace 1 inner flame.First-class heat exchanger 2 is interconnected with secondary heat exchanger 3.
The other end that secondary heat exchanger 3 is provided with the second air input pipe, 11, the second air input pipes 11 is provided with second blower fan 12, and secondary heat exchanger 3 is 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 ends 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 high temperature air efferent duct 7 with the first air input pipe 5 respectively.
Secondary heat exchanger 3 one ends are connected with first-class heat exchanger 2, and a side of secondary heat exchanger 3 is connected with the second high temperature air efferent duct 13 with the second air input pipe 11 respectively.First-class heat exchanger 2 one ends that are connected with waste gas are provided with 3 first flanges 32, and through being provided with outlet after first-class heat exchanger and secondary heat exchanger 3 energy exchanges on secondary heat exchanger 3 one ends, outlet is provided with 3 second flanges 33.First flange 32 is connected with foundry goods annealing furnace 1, and second flange 33 is provided with blast pipe 14, and first-class heat exchanger 2 is provided with cleans inlet 34, and secondary heat exchanger 3 is provided with washing outlet 35.Clean on the inlet 34 and be connected with cleaning machine 37.When first-class heat exchanger 2 and secondary heat exchanger 3 need clean, the spacer flanger 36 in 3 first flanges was blind flanges, and the spacer flanger 36 in 3 second flanges is blind flanges.
The first bar shaped pipe 16 that the first high temperature air efferent duct 7 comprises the T shape isocon 15 that is connected with first-class heat exchanger 2, be connected respectively with a T shape isocon 15 two ends and many are arranged side by side first wireway of importing in the foundry goods annealing furnace 1 17 on the first bar shaped pipe 16 and with high temperature air.The second bar shaped pipe 19 and many second wireways 20 that are arranged side by side on the second bar shaped pipe 19 that water-gas input pipe 8 comprises the 2nd T shape isocon 18 that water-gas connects, is connected respectively with the 2nd T shape isocon 18 two ends.First wireway 17 is connected with premixed pipe 9, and 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 3rd wireways 22 of giving input high temperature airs in the drying oven 4 side by side with a 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 that is used to monitor air regime in the first air input pipe 5, the first monitoring mouth 26 that is connected with controller 24 and on a T shape isocon 15 and the first bar shaped pipe 16, is respectively equipped with, the second monitoring mouth 27 that is connected with controller 24 and on premixed pipe 9, is provided with, the second traffic monitoring element 28 that is connected with controller 24 and on water-gas input pipe 8, is provided with, the 3rd monitoring mouth 29 that is connected with controller 24 and on foundry goods annealing furnace 1, is provided with, the 3rd traffic monitoring element 30 that is connected with controller 24 and on the second air input pipe 11, is provided with, the 4th monitoring mouth 31 that is connected with controller 24 and on the 3rd T shape isocon 21, is provided with and the 5th monitoring mouth 23 that is connected with controller 24 and on blast pipe 14, is provided with.
A kind of foundry goods annealing furnace efficient and energy-saving combustion system comprises air flow system and control monitoring system.The air flow system utilizes normal temperature air, and heat exchange realizes through two-stage, and is specific as follows:
Below be the one-level heat exchange, the high-temp waste gas that (1) foundry goods 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, 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 that pours into is from having converted the air of high temperature after the first high temperature air efferent duct 7 comes out to; (3) after the air of high temperature comes out from a T shape isocon 15, be diverted to the first bar shaped pipe 16 at two ends, first wireway, 17 each branch on the first bar shaped pipe 16 are input to premixed pipe 9 with the air of high temperature; (4) synchronous 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, second wireway, 20 each branch on the second bar shaped pipe 19 carry out premixed with the air that water-gas is input to premixed pipe 9 and high temperature, are sprayed onto on the foundry goods in the foundry goods annealing furnace 1 by burner 10 afterwards.
Below be the secondary heat exchange, the waste gas that discharge from first-class heat exchanger 2 (1) though through after the heat exchange part thermal losses is arranged, 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, 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 the secondary heat exchanger 3, the normal temperature air that pours into is from having converted the air of high temperature after the second high temperature air efferent duct 13 comes out to; (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.
The control monitoring system is to regulate and control conveying capacity by flow, impurity content that air in the monitoring air flow system contains composition.The normal temperature air feed flow of the first flow monitoring element 25 monitoring first air input pipe 5 and the control element of impurity content.The first monitoring mouth 26 is high temperature air traffic monitoring mouths of the monitoring first high temperature air efferent duct 7 outputs.The second monitoring mouth 27 is that high temperature air and the water-gas in the monitoring premixed pipe 9 mix the monitoring mouth of situation.The second traffic monitoring element 28 is the feed flow of monitoring water-gas and the control element of impurity content.The 3rd monitoring mouth 29 is that monitoring foundry goods annealing furnace 1 wife burns the monitoring mouth of situation.The 3rd traffic monitoring element 30 is the normal temperature air feed flow of the monitoring second air input pipe 11 and the control element of impurity content.The 4th monitoring mouth 31 is high temperature air traffic monitoring mouths of the monitoring second high temperature air efferent duct 13 outputs.The 5th monitoring mouth 23 is the exhaust gas flow of monitoring blast pipe 14 discharges and the monitoring mouth of impurity content.
Concrete application is as follows:
After the high-temp waste gas that foundry goods annealing furnace 1 produces enters from the below of first-class heat exchanger 2.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 is allocated after monitoring the normal temperature air feed flow and impurity content of the first air input pipe 5 by first flow monitoring element 25.The normal temperature air that pours into is through the heat exchange action of first-class heat exchanger 2, from having converted the air of high temperature after the first high temperature air efferent duct 7 comes out to.Controller 24 is by the high temperature air flow of first monitoring mouthful 26 monitoring, the first high temperature air efferent duct, 7 outputs.In addition, carry the water-gas of coming and the high temperature air of the first high temperature air efferent duct, 7 outputs in premixed pipe 9, to carry out premixed from water-gas input pipe 8, be sprayed onto on the interior foundry goods of foundry goods annealing furnace 1 by burner 10 afterwards.The controller 24 of this moment is monitored by the feed flow and the impurity content of 28 pairs of water-gas of the second traffic monitoring element, and monitor mouthful 27 pairs of premixed pipes 9 an interior high temperature air and water-gas mixing situations by second and monitor, allocate by controller 24 then.
Then the high temperature air of discharging from first-class heat exchanger 2 is exactly a part of waste heat waste gas, enters the below of secondary heat exchanger 3.Simultaneously, second blower fan 12 pours into normal temperature air by the second air input pipe 11 in secondary heat exchanger 3, and controller 24 is allocated after monitoring the normal temperature air feed flow and impurity content of the second air input pipe 11 by the 3rd traffic monitoring element 30.Through the waste heat waste gas heat exchange interaction in the secondary heat exchanger 3,, be blown into drying oven 4 at last from having converted the air of high temperature after the second high temperature air efferent duct 13 comes out to.Controller 24 is allocated then by the high temperature air flow of the 4th monitoring mouthful 31 monitoring, the second high temperature air efferent duct, 13 outputs.
In addition, controller 24 carries out flow and other allotments by the 5th monitoring mouthful exhaust gas flow and impurity content that 23 monitoring blast pipes 14 are discharged.For example, the content of the waste gas carbon monoxide of discharging when blast pipe 14 is many, prove that the burning in the foundry goods annealing furnace 1 is insufficient, and controller 24 can control first flow monitoring elements 25 and the flow of the 3rd traffic monitoring element 30 increase air.
The application that first-class heat exchanger 2 and secondary heat exchanger 3 clean: under the situation that does not need to clean, 3 first flanges 16 are three-decker, and the upper strata is connected with first-class heat exchanger 2, and lower floor is connected with boiler 1; 3 second flanges 17 in addition also are three-decker, and the upper strata is connected with blast pipe 14, and lower floor is connected with secondary heat exchanger 3.
When needs clean; be replaced by blind flange after spacer flangers 36 in the middle of first flange 16 and second flange 17 are taken apart; after the cleaning fluid that the purpose protection is discharged from cleaning machine 20 enters from cleaning inlet 18; discharge from washing outlet 19 again, realize cleaning the purpose of first-class heat exchanger 2 and secondary heat exchanger 3.
Above-described only is some embodiments of the present invention.For the person of ordinary skill of the art, under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, these all belong to the protection domain of invention.
Claims (10)
1. the energy-efficient burner of foundry goods annealing furnace is characterized in that this device comprises foundry goods annealing furnace, the first-class heat exchanger that is connected with the foundry goods annealing furnace and the secondary heat exchanger that is provided with on first-class heat exchanger, and the drying oven that is connected with secondary heat exchanger; The waste gas that described foundry goods annealing furnace produces enters first-class heat exchanger.
2. the energy-efficient burner of a kind of foundry goods annealing furnace according to claim 1 is characterized in that described first-class heat exchanger is provided with the first air input pipe, and the other end of the first air input pipe is provided with first blower fan; Described first-class heat exchanger is provided with the first high temperature air efferent duct of the work that matches with the first air input pipe;
Described foundry goods annealing furnace is provided with the water-gas input pipe;
The intersection of the described 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; Described premixed pipe is provided with the burner to the inner flame of foundry goods annealing furnace;
Described first-class heat exchanger and secondary heat exchanger are interconnected;
Described secondary heat exchanger is provided with the second air input pipe, and the other end of the second air input pipe is provided with second blower fan; Described secondary heat exchanger is provided with the second high temperature air efferent duct of the work that matches with the second air input pipe;
The described second high temperature air efferent duct is connected with drying oven.
3. the energy-efficient burner of a kind of foundry goods annealing furnace according to claim 2 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 high temperature air efferent duct with the first air input pipe respectively.
4. the energy-efficient burner of a kind of foundry goods annealing furnace according to claim 3 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 high temperature air efferent duct with the second air input pipe respectively;
The described first-class heat exchanger that is connected with waste gas one end is provided with 3 first flanges;
Through being provided with outlet after first-class heat exchanger and the secondary heat exchanger energy exchange on secondary heat exchanger one end, described outlet is provided with 3 second flanges;
Described first flange is connected with the foundry goods annealing furnace;
Described second flange is provided with blast pipe;
Described first-class heat exchanger is provided with cleans inlet, and secondary heat exchanger is provided with washing outlet; Be connected with cleaning machine on the described cleaning inlet; When first-class heat exchanger and secondary heat exchanger need clean, the spacer flanger in described 3 first flanges was a blind flange, and the spacer flanger in described 3 second flanges is a blind flange.
5. the energy-efficient burner of a kind of foundry goods annealing furnace according to claim 2, it is characterized in that the first bar shaped pipe that the described first high temperature air efferent duct comprises the T shape isocon that is connected with first-class heat exchanger, be connected respectively with T shape isocon two ends and many are arranged side by side first wireway of importing in the foundry goods annealing furnace on the first bar shaped pipe and with high temperature air;
The second bar shaped pipe and many second wireways that are arranged side by side on the second bar shaped pipe that the water-gas input pipe comprises the 2nd T shape isocon that water-gas connects, is connected respectively with the 2nd T shape isocon two ends;
Described first wireway is connected with the premixed pipe;
Described second wireway is connected with the premixed pipe;
The described second high temperature air efferent duct comprises the 3rd T shape isocon that is connected with secondary heat exchanger, is provided with many 3rd wireways of giving input high temperature air in the drying oven side by side with T shape isocon both sides.
6. the energy-efficient burner of a kind of foundry goods annealing furnace according to claim 5 is characterized in that, also comprises the control device that above-mentioned air is monitored in real time and operated.
7. the energy-efficient burner of a kind of foundry goods annealing furnace according to claim 6, 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 that is used to monitor air regime in the first air input pipe, the first monitoring mouth that is connected with controller and on a T shape isocon and the first bar shaped pipe, is respectively equipped with, the second monitoring mouth that is connected with controller and on the premixed pipe, is provided with, the second traffic monitoring element that is connected with controller and on the water-gas input pipe, is provided with, the 3rd monitoring mouth that is connected with controller and on the foundry goods annealing furnace, is provided with, the 3rd traffic monitoring element that is connected with controller and on the second air input pipe, is provided with, the 4th monitoring mouth that is connected with controller and on the 3rd T shape isocon, is provided with and the 5th monitoring mouth that is connected with controller and on blast pipe, is provided with.
8. according to claim 1-7, a kind of foundry goods annealing furnace efficient and energy-saving combustion system is characterized in that, comprises air flow system and control monitoring system.
9. a kind of foundry goods annealing furnace efficient and energy-saving combustion system according to claim 8 is characterized in that, described air flow system utilizes normal temperature air, and heat exchange realizes through two-stage, and is specific as follows:
Below be the one-level heat exchange,
(1) high-temp waste gas of foundry goods annealing furnace generation 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, 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 that pours into is from having converted the air of high temperature after the first high temperature air efferent duct comes out to;
(3) after the air of high temperature comes out from a T shape isocon, be diverted to the first bar shaped pipe at two ends, each branch of first wireway on the first bar shaped pipe is input to the premixed pipe with the air of high temperature;
(4) synchronous with (3), water-gas pours into from the 2nd T shape isocon, be diverted to the second bar shaped pipe at two ends, each branch of second wireway on the second bar shaped pipe carries out premixed with the air that water-gas is input to premixed pipe and high temperature, is sprayed onto on the foundry goods in the foundry goods annealing furnace by burner afterwards;
Below be the secondary heat exchange,
(1) waste gas of discharging from first-class heat exchanger though through after the heat exchange part thermal losses is arranged, 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, second blower fan pours into normal temperature air by the second air input pipe in secondary heat exchanger, and through the waste heat waste gas heat exchange interaction in the secondary heat exchanger, the normal temperature air that pours into is from having converted the air of high temperature after the second high temperature air efferent duct comes out to;
(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.
10. a kind of foundry goods annealing furnace efficient and energy-saving combustion system according to claim 9 is characterized in that, described control monitoring system is to regulate and control conveying capacity by flow, impurity content that air in the monitoring air flow system contains composition;
The first flow monitoring element is the normal temperature air feed flow of the monitoring first air input pipe and the control element of impurity content;
The first monitoring mouth is the monitoring mouth of the high temperature air flow of monitoring first high temperature air efferent duct output;
The second monitoring mouth is that high temperature air and the water-gas in the monitoring premixed pipe mixes the monitoring mouth of situation;
The second traffic monitoring element is the feed flow of monitoring water-gas and the control element of impurity content;
The 3rd monitoring mouth is that monitoring foundry goods annealing furnace wife burns the monitoring mouth of situation;
The 3rd traffic monitoring element is the normal temperature air feed flow of the monitoring second air input pipe and the control element of impurity content;
The 4th monitoring mouth is the monitoring mouth of the high temperature air flow of monitoring second high temperature air efferent duct output;
The 5th monitoring mouth is the exhaust gas flow of monitoring blast pipe discharge and the monitoring mouth of impurity content.
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| CN103217020B (en) | 2014-12-03 |
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