CN108315519B - Ferroalloy baking circulation heating device and working method thereof - Google Patents
Ferroalloy baking circulation heating device and working method thereof Download PDFInfo
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- CN108315519B CN108315519B CN201810398173.1A CN201810398173A CN108315519B CN 108315519 B CN108315519 B CN 108315519B CN 201810398173 A CN201810398173 A CN 201810398173A CN 108315519 B CN108315519 B CN 108315519B
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- 229910001021 Ferroalloy Inorganic materials 0.000 title claims abstract description 28
- 238000010438 heat treatment Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 75
- 230000001502 supplementing effect Effects 0.000 claims abstract description 26
- 239000000428 dust Substances 0.000 claims abstract description 22
- 238000004064 recycling Methods 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000002912 waste gas Substances 0.000 abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000003546 flue gas Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 24
- 239000000463 material Substances 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 239000003034 coal gas Substances 0.000 description 6
- 229910000640 Fe alloy Inorganic materials 0.000 description 5
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 4
- 229910000628 Ferrovanadium Inorganic materials 0.000 description 4
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 description 4
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 3
- 229910000616 Ferromanganese Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910001309 Ferromolybdenum Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/14—Preheating the combustion air
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to a ferroalloy baking and circulating heating device in the field of environmental protection flue gas dust removal and a working method of the ferroalloy baking and circulating heating device; the combustion-supporting fan system is connected with the receiving hopper through a second air pipe; the hot air furnace air outlet is connected with the hot air blower system through a main hot air pipe, and the hot air blower system is connected with the lower part of the receiving hopper through a diffusing main pipe; the main hot air pipe and the diffusing main pipe respectively comprise an inner layer and an external cooling layer; the external cooling layer of the main hot air pipe and the external cooling layer of the diffusing main pipe are respectively connected with a circulating fan system through a third air pipe, and the circulating fan system is connected with the hot air furnace system through a fourth air pipe; the main hot air pipe and the diffusing main pipe are also provided with an air supplementing system in a matched manner; the invention can fully recycle the heat emitted by the main hot air pipeline and the main emission pipe in an external air cooling circulation mode, and prolongs the service life; meanwhile, the heat loss and the dust and waste gas emission are reduced and the pollution is reduced by recycling the residual heat energy and dust after being diffused.
Description
Technical Field
The invention relates to a ferroalloy baking and circulating heating device in the field of environmental protection flue gas dust removal.
Background
In the prior art, an alloy baking furnace is special equipment for baking ferroalloy, and is used for baking ferroalloy by dehydrating ferrosilicon, ferromanganese, ferrochromium, ferromolybdenum, ferrotitanium, ferrovanadium and other alloy furnace materials, baking the ferrosilicon, the ferromanganese, the ferroferrotitanium, the ferrovanadium and other alloy furnace materials, baking the ferrosilicon, the ferroferroferrotitanium, ferrotitanium, ferrovanadium and other alloy furnace materials at the temperature of 200 ℃ and baking the ferrosilicon, ferrotitanium, ferroferrotitanium and ferrovanadium and other alloy furnace materials at the temperature of 400-600 ℃ for removing water and crystallizing; the alloy reaches the required temperature, can meet the steel making process requirement, and achieves the purposes of shortening smelting time and improving steel quality; in the existing heating system, the problem is mainly that hot air is pumped out by a circulating fan after the coal gas is combusted in a hot air furnace, and a hot air main pipe can be heated to more than 700 ℃; the rock wool heat preservation and external heat insulation board coating treatment is usually carried out on the pipeline, but the pipeline has short service life and larger heat loss after long-term use, and the use purpose of energy conservation and consumption reduction is not met; the prior invention has the application number 201510501765.8, the application date 2015.08.14, the application publication number CN 105066711A and the application publication date 2015.11.18; the invention comprises the following steps: a high-order ferroalloy feeding system, a ferroalloy roaster and a ferroalloy receiving hopper; a rail connected with the high-level iron alloy feeding system and the iron alloy
The gold receiving hopper and the ferroalloy roaster are arranged on one side of a track between the high-level ferroalloy feeding system and the ferroalloy receiving hopper; the movable centralized hopper is controlled to run along the track: receiving materials at a high-level ferroalloy feeding system; after receiving the material, the material is moved to the side of a ferroalloy roaster, and the ferroalloy is roasted by the ferroalloy roaster; after baking, the iron alloy is driven to an iron alloy receiving hopper, and the baked iron alloy is poured out; the invention has no hot gas circulation collection system of waste gas, and when in work, the temperature of the pipeline is very high, so that the service life is very short, the heat loss is large, and the long-term use is not facilitated.
Disclosure of Invention
The invention aims to provide a ferroalloy baking circulation heating device, which can fully recycle heat emitted by a main hot air pipeline and a diffusing main pipe in an external air cooling circulation mode and prolong the service life; meanwhile, the heat loss and the dust and waste gas emission are reduced and the pollution is reduced by recycling the residual heat energy and dust after being diffused.
The purpose of the invention is realized in the following way: the ferroalloy baking and circulating heating device comprises a main bracket, wherein a plurality of groups of receiving hoppers are arranged on the main bracket, an automatic gate is correspondingly arranged below each receiving hopper, a weighing system is correspondingly arranged below the automatic gate, and an automatic discharge hole is arranged below the weighing system; a hot blast stove system, a combustion-supporting fan system, a hot air fan system and a circulating fan system are sequentially arranged beside the main bracket; the hot blast stove system comprises a hot blast stove air inlet and a hot blast stove air outlet, the hot blast stove air inlet is connected with the combustion-supporting fan system through a first air pipe, and the combustion-supporting fan system is connected with the receiving hopper through a second air pipe; the hot air furnace air outlet is connected with the hot air blower system through a main hot air pipe, and the hot air blower system is connected with the lower part of the receiving hopper through a diffusing main pipe; the main hot air pipe and the diffusing main pipe respectively comprise an inner layer and an external cooling layer; the external cooling layer of the main hot air pipe and the external cooling layer of the diffusing main pipe are respectively connected with a circulating fan system through a third air pipe, and the circulating fan system is connected with the hot air furnace system through a fourth air pipe; the main hot air pipe and the diffusing main pipe are also provided with an air supplementing system in a matched mode.
When the air conditioner works, coal gas enters the hot blast stove system and the combustion-supporting fan system to pressurize and recycle recovered gas containing residual heat and dust thereof through the first air pipe, the recovered gas enters the hot blast stove system to carry out mixed combustion to generate heat, hot air generated after combustion in the hot blast stove system is pumped into the inner layer of the main hot air pipe through the hot blast air outlet of the hot blast stove system, meanwhile, the outlet of the fourth air pipe arranged at the hot blast air outlet can continuously provide cooling air, at the moment, the hot air and the cooling air are mixed at the hot blast air outlet of the hot blast stove, when the temperature deviates from a set value, the temperature can be adjusted by adjusting the rotating speed of the circulating fan system, and the aim of adjusting the temperature can be achieved by mixing the cooling air recovered by the circulating fan system and the hot air generated in the hot blast stove system, so as to achieve the purposes of adjusting the temperature and recycling the heat dissipation temperature of the main hot air pipe and the bleeding main heat dissipation pipe; when the temperature cannot be effectively regulated by regulating the rotating speed of the circulating fan system, the air quantity can be controlled by regulating the opening of the air supplementing system on the main diffusing pipe and the main hot air pipe thereof, and the cooling air respectively cools the inner layer of the main diffusing pipe and the inner layer of the main hot air pipe through the external cooling layer; the hot air after temperature adjustment is pressurized by the hot air blower system and then is conveyed to the diffusing main pipe and enters the receiving hopper, the combustion-supporting blower system recycles residual heat and recycling gas of dust contained in each receiving hopper through the second air pipe by pressurization, and then enters the hot air furnace system through the first air pipe to be mixed and combusted to generate heat and circulate accordingly.
The invention has the beneficial effects that the invention fully recycles the heat emitted by the main hot air pipeline and the main radiating pipe, and prolongs the service life; meanwhile, the heat loss and dust and waste gas emission are reduced by recycling the residual heat energy and dust after being diffused.
As a further improvement of the invention, the invention can ensure the normal operation of the whole device, reduce pollution and simultaneously efficiently recycle energy; the combustion-supporting fan system comprises a combustion-supporting fan air inlet and a combustion-supporting fan air outlet; the air heater system comprises an air heater air inlet and an air heater air outlet, and the circulating fan system comprises a circulating fan air inlet and a circulating fan air outlet; the air outlet of the combustion-supporting fan is connected with the air inlet of the hot air furnace, the upper part of the receiving hopper is connected with the air inlet of the combustion-supporting fan, the air outlet of the hot air furnace is connected with the air inlet of the hot air machine, and the air outlet of the hot air machine is connected with the bottom of the receiving hopper; the air outlet of the air heater and the air inlet of the air heater are respectively connected with the air inlet of the circulating fan, and the air outlet of the circulating fan is connected with the air outlet of the hot blast stove.
As a further improvement of the invention, the cooling air can be efficiently cooled for the inner layer through the cyclone sheets; the inner layer comprises an inner surface and an outer surface, and the external cooling layer comprises a cooling layer inner surface and a cooling layer outer surface; the inner layer is arranged at a certain distance from the external cooling layer; the external cooling layer comprises a cyclone sheet arranged between the outer surface of the inner layer and the inner surface of the cooling layer, and the cyclone sheet is arranged on the outer surface of the inner layer in a surrounding manner according to a certain screw pitch.
As a further improvement of the invention, the main diffusing pipe and the main hot air pipe can be rapidly cooled, and the air quantity is convenient for the condition; the air supplementing system comprises an upper air supplementing opening arranged on the diffusing main pipe and a lower air supplementing opening arranged on the main hot air pipe; the upper air supply port is arranged at one end of the diffusing main pipe far away from the air outlet of the air heater; the lower air supply port is arranged at one end of the main hot air pipe, which is close to the air outlet of the hot air furnace; the upper air supply port is directly communicated with the external cooling layer of the diffusing main pipe, and the lower air supply port is directly communicated with the external cooling layer of the main hot air pipe.
As a further improvement of the invention, the invention ensures the efficient cooling of the diffusing main pipe and the main hot air pipe and ensures no pollution; the third air pipe comprises a third front air pipe and a third rear air pipe; the inlet of the third front air pipe is arranged near the air inlet of the air heater, the inlet of the third front air pipe is directly communicated with the external cooling layer of the main air heater, the outlet of the third front air pipe is arranged near the air outlet of the air heater, and the outlet of the third front air pipe is directly communicated with the external cooling layer of the diffusing main pipe; the inlet of the third rear air pipe is directly communicated with the external cooling layer of the diffusing main pipe, and the inlet of the third rear air pipe and the outlet of the third front air pipe are positioned at the same height; the outlet of the third rear air pipe is directly connected with the air inlet of the circulating fan, the air outlet of the circulating fan is connected with the inlet of the fourth air pipe, and the outlet of the fourth air pipe is directly communicated with the inner layer of the main hot air pipe.
As a further improvement of the invention, the temperature inside the receiving hopper can be better controlled; the diffusing main pipe comprises a main pipe and auxiliary pipes, the diameter of the main pipe is far larger than that of the auxiliary pipes, the auxiliary pipes are provided with a plurality of groups, each auxiliary pipe is arranged at intervals, and each auxiliary pipe is led to the main pipe respectively; a butterfly valve is arranged between each auxiliary pipeline and the main pipeline, and a first temperature measuring device is also arranged on each auxiliary pipeline in a matched mode.
As a further improvement of the invention, the temperature inside the hot blast stove system is convenient to control, and the high-efficiency work of the hot blast stove system is ensured; the hot-blast stove air inlet enters the hot-blast stove system through gas burners, the gas burners are provided with a plurality of groups, a butt-clamping butterfly valve is arranged between each gas burner and the hot-blast stove air inlet, and a second temperature measuring device is arranged above the hot-blast stove air inlet in the hot-blast stove system; the position of the main hot air pipe close to the air outlet of the hot air furnace is also provided with a third temperature measuring device.
Another object of the present invention is achieved by: the working method of the ferroalloy baking and circulating heating device comprises the following steps:
The method comprises the steps that firstly, coal gas enters a combustion fan system from a coal gas burner, the recycled gas containing residual heat and dust thereof is pressurized and recycled, enters a hot blast stove system for mixed combustion to generate heat, and meanwhile, the temperature of hot air in the hot blast stove system is monitored in real time through a second temperature measuring device arranged above an air inlet of the hot blast stove;
step two, hot air generated after the gas is combusted is pumped into the main hot air pipe through the hot air pipe air outlet by the hot air system, meanwhile, the outlet of the hot air pipe air outlet is provided with a fourth air pipe, cooling air can be continuously provided, at the moment, the hot air and the cooling air are mixed at the hot air pipe air outlet, and meanwhile, the temperature of the main hot air pipe can be monitored in real time by a third temperature measuring device arranged at a position close to the hot air pipe air outlet;
When the temperature deviates from the set value, the temperature can be further adjusted by adjusting the rotating speed of the circulating fan system, and the aim of temperature adjustment is to achieve the purposes of mixing cooling air recovered by the circulating fan system with hot air generated in the hot blast stove system to achieve temperature adjustment and recovering heat dissipation temperatures of the main hot blast pipe and the diffusing main pipe;
Step four, when the temperature cannot be effectively regulated by regulating the rotating speed of the circulating fan system, the air quantity can be controlled by regulating the opening of the upper air supplementing opening on the diffusing main pipe and the opening of the lower air supplementing opening on the main hot air pipe respectively, and the cooling air cools the inner layer of the diffusing main pipe and the inner layer of the main hot air pipe respectively through the cyclone sheets;
step five, hot air after temperature adjustment is pressurized by the hot air system and then is conveyed into a main pipeline of the diffusing main pipe, and then enters the receiving hopper through a plurality of groups of auxiliary pipelines, and meanwhile, a first temperature measuring device is arranged on each auxiliary pipeline and can be used for independently monitoring and adjusting the diffusing temperature in each receiving hopper;
step six, the combustion-supporting fan system is used for pressurizing and recycling residual heat and recycling dust gas contained in each receiving hopper, and then the residual heat and dust recycling gas enter the hot blast stove system for mixed combustion to generate heat; and the cycle is performed.
The invention has the beneficial effects that the invention fully recycles the heat emitted by the main hot air pipeline and the main radiating pipe, and prolongs the service life; meanwhile, the heat loss and dust and waste gas emission are reduced by recycling the residual heat energy and dust after being diffused.
As a further improvement of the invention, the cooling air and the hot air can be quickly mixed at the air outlet of the hot blast stove; the main hot air pipe at the air outlet of the hot air furnace is provided with an elbow, and the tail end of the elbow is provided with a third temperature measuring device; the head end of the elbow is provided with a lower air supplementing port.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of the second embodiment of the present invention.
Fig. 3 is a schematic perspective view of the arrangement of the cyclone sheet.
Fig. 4 is an enlarged schematic view of the structure a in fig. 1.
The automatic cooling system comprises a receiving hopper 1, a main support 2, a main hot air pipe 3, a third temperature measuring device 4, a second temperature measuring device 5, a hot air furnace system 6, a lower air supplementing port 7, a circulating fan system 8, a combustion supporting fan system 9, a fourth air pipe 10, a diffusing main pipe 11, a first temperature measuring device 12, a butterfly valve 13, an upper air supplementing port 14, an outlet of a third front air pipe 15, a third front air pipe 16, a hot air fan system 17, a third rear air pipe 18, a weighing system 19, an automatic gate 20, a third air pipe 21, a second air pipe 22, a first air pipe 23, a double-clamped butterfly valve 24, a gas burner 25, a elbow 26, an external cooling layer 27, a rotational flow sheet 28, an inlet of the third front air pipe 29, an inlet of the fourth front air pipe 30, an automatic discharging port 31 and an outlet of the fourth air pipe 32.
Detailed Description
Example 1
As shown in fig. 1-4, the object of the present invention is achieved in that: the ferroalloy baking circulation heating device comprises a main support 2, wherein a plurality of groups of receiving hoppers 1 are arranged on the main support 2, an automatic gate 20 is correspondingly arranged below each receiving hopper 1, a weighing system 19 is correspondingly arranged below the automatic gate 20, and an automatic discharge port 31 is arranged below the weighing system 19; a hot blast stove system 6, a combustion-supporting fan system 9, a hot air fan system 17 and a circulating fan system 8 are sequentially arranged beside the main bracket 2; the hot blast stove system 6 comprises a hot blast stove air inlet and a hot blast stove air outlet, the hot blast stove air inlet is connected with the combustion-supporting fan system 9 through a first air pipe 23, and the combustion-supporting fan system 9 is connected with the receiving hopper 1 through a second air pipe 22; the hot blast stove air outlet is connected with the hot air blower system 17 through the main hot blast pipe 3, and the hot air blower system 17 is connected with the lower part of the receiving hopper 1 through the diffusing main pipe 11; the main hot air pipe 3 and the diffusing main pipe 11 respectively comprise an inner layer and an external cooling layer 27; the external cooling layer 27 of the main hot air pipe 3 and the external cooling layer 27 of the diffusing main pipe 11 are respectively connected with the circulating fan system 8 through the third air pipe 21, and the circulating fan system 8 is connected with the hot air furnace system 6 through the fourth air pipe 10; the main hot air pipe 3 and the diffusing main pipe 11 are also provided with an air supplementing system in a matched mode.
The combustion fan system 9 comprises a combustion fan air inlet and a combustion fan air outlet; the air heater system 17 comprises an air heater air inlet and an air heater air outlet, and the circulating fan system 8 comprises a circulating fan air inlet and a circulating fan air outlet; the air outlet of the combustion-supporting fan is connected with the air inlet of the hot air furnace, the upper part of the receiving hopper 1 is connected with the air inlet of the combustion-supporting fan, the air outlet of the hot air furnace is connected with the air inlet of the hot air machine, and the air outlet of the hot air machine is connected with the bottom of the receiving hopper 1; the air outlet of the air heater and the air inlet of the air heater are respectively connected with the air inlet of the circulating fan, and the air outlet of the circulating fan is connected with the air outlet of the hot blast stove.
The inner layer includes an inner surface and an outer surface, and the external cooling layer 27 includes a cooling inner surface and a cooling outer surface; the inner layer and the external cooling layer 27 are arranged at a certain distance; the external cooling layer 27 comprises a swirl plate 28 arranged between the outer surface of the inner layer and the inner surface of the cooling layer, the swirl plate 28 being arranged circumferentially on the outer surface of the inner layer with a certain pitch.
The air supplementing system comprises an upper air supplementing opening 14 arranged on the diffusing main pipe 11 and a lower air supplementing opening 7 arranged on the main hot air pipe 3; the upper air supply port 14 is arranged at one end of the diffusing main pipe 11 far away from the air outlet of the air heater; the lower air supply port 7 is arranged at one end of the main hot air pipe 3 close to the air outlet of the hot air furnace; the upper air supplementing opening 14 is directly communicated with the external cooling layer 27 of the diffusing main pipe 11, and the lower air supplementing opening 7 is directly communicated with the external cooling layer 27 of the main hot air pipe 3.
The third ductwork 21 includes a third front ductwork 16 and a third rear ductwork 18; the inlet 16 of the third pre-air pipe is arranged near the air inlet of the air heater, the inlet 16 of the third pre-air pipe is directly communicated with the external cooling layer 27 of the main air heater 3, the outlet 15 of the third pre-air pipe is arranged near the air outlet of the air heater, and the outlet 15 of the third pre-air pipe is directly communicated with the external cooling layer 27 of the diffusing main pipe 11; the inlet 29 of the third rear air pipe is directly communicated with the external cooling layer 27 of the diffusing main pipe 11, and the inlet 29 of the third rear air pipe and the outlet 15 of the third front air pipe are positioned at the same height; the outlet of the third rear air pipe 18 is directly connected with the air inlet of the circulating fan, the air outlet of the circulating fan is connected with the inlet of the fourth air pipe 10, and the outlet 32 of the fourth air pipe is directly communicated with the inner layer of the main hot air pipe 3.
The diffusing main pipe 11 comprises a main pipe and auxiliary pipes, the diameter of the main pipe is far larger than that of the auxiliary pipes, the auxiliary pipes are provided with a plurality of groups, each auxiliary pipe is arranged at a certain distance, and each auxiliary pipe is led to the main pipe respectively; a butterfly valve 13 is arranged between each auxiliary pipeline and the main pipeline, and a first temperature measuring device 12 is also arranged on each auxiliary pipeline in a matched mode.
The air inlet of the hot blast stove enters the hot blast stove system 6 through the gas burner 25, the gas burner 25 is provided with a plurality of groups, a butt-clamping butterfly valve 24 is arranged between each gas burner 25 and the air inlet of the hot blast stove, and a second temperature measuring device 5 is arranged above the air inlet of the hot blast stove in the hot blast stove system 6; the position of the main hot air pipe 3 close to the air outlet of the hot air furnace is also provided with a third temperature measuring device 4.
The main hot air pipe 3 at the air outlet of the hot air furnace is provided with an elbow 26, and the tail end of the elbow 26 is provided with a third temperature measuring device 4; the head end of the elbow 26 is provided with a lower air supplementing port 7.
When the hot blast stove system works, coal gas enters the combustion fan system 9 from the coal gas burner 25, the recycled gas containing residual heat and dust thereof is pressurized and recycled through the first air pipe 23, and enters the hot blast stove system 6 for mixed combustion to generate heat, and meanwhile, the temperature of hot air in the hot blast stove system 6 is monitored in real time through the second temperature measuring device 5 arranged above the air inlet of the hot blast stove; the hot air generated after the gas is combusted is pumped out into the inner layer of the main hot air pipe 3 through the hot air blower system 17 by the hot air furnace air outlet, meanwhile, the outlet of the hot air furnace air outlet is provided with a fourth air pipe 10, cooling air can be continuously supplied, at the moment, the hot air and the cooling air are mixed at an external cooling layer 27 at the hot air furnace air outlet, and meanwhile, the temperature of the elbow 26 of the main hot air pipe 3 can be monitored in real time by a third temperature measuring device 4 arranged at the position close to the hot air furnace air outlet; when the temperature deviates from the set value, the temperature can be further adjusted by adjusting the rotating speed of the circulating fan system 8, and the aim of temperature adjustment is to achieve the purposes of mixing cooling air recovered by the circulating fan system 8 with hot air generated in the hot blast stove system 6 to achieve temperature adjustment and heat dissipation temperature recovery of the main hot blast pipe 3 and the diffusing main pipe 11; when the temperature cannot be effectively regulated by regulating the rotation speed of the circulating fan system 8, the air quantity can be controlled by regulating the opening of the upper air supply port 14 on the diffusing main pipe 11 and the opening of the lower air supply port 7 on the main hot air pipe 3 respectively, and cooling air passes through the cyclone sheets 28 to perform cyclone heat dissipation in the external cooling layer 27, so that the inner layer of the diffusing main pipe 11 and the inner layer of the main hot air pipe 3 can be cooled respectively; the hot air after temperature adjustment is pressurized by the air heater system 17 and then is conveyed into the main pipeline of the diffusing main pipe 11, and then enters the receiving hopper 1 through a plurality of groups of auxiliary pipelines, and meanwhile, each auxiliary pipeline is provided with a first temperature measuring device 12 which can independently monitor and adjust the diffusing temperature in each receiving hopper 1; the combustion-supporting fan system 9 then pressurizes and recovers the residual heat and the recovered gas of dust contained in each receiving hopper 1, and then enters the hot blast stove system 6 for mixed combustion to generate heat; and the cycle is performed.
Example two
As shown in FIGS. 1-4, a method for operating a ferroalloy bake cycle heating apparatus includes
Step one, gas enters a combustion fan system 9 from a gas burner 25 to be pressurized to recycle the recycling gas containing residual heat and dust thereof, and the recycling gas enters a hot blast stove system 6 to be mixed and combusted to generate heat, and meanwhile, the temperature of hot air in the hot blast stove system 6 is monitored in real time through a second temperature measuring device 5 arranged above an air inlet of the hot blast stove;
step two, hot air generated after the gas is combusted is pumped into the main hot air pipe 3 through an air outlet of the hot air furnace by the hot air blower system 17, meanwhile, an outlet of the fourth air pipe 10 arranged at the air outlet of the hot air furnace can continuously provide cooling air, at the moment, the hot air and the cooling air are mixed at the air outlet of the hot air furnace, and meanwhile, the temperature of the main hot air pipe 3 can be monitored in real time by the third temperature measuring device 4 arranged at the position close to the air outlet of the hot air furnace;
when the temperature deviates from the set value, the temperature can be adjusted by adjusting the rotating speed of the circulating fan system 8, and the aim of temperature adjustment is to achieve the purposes of temperature adjustment by mixing cooling air recovered by the circulating fan system 8 with hot air generated in the hot blast stove system 6 and heat dissipation temperature recovery of the main hot blast pipe 3 and the diffusing main pipe 11;
Step four, when the temperature cannot be effectively regulated by regulating the rotation speed of the circulating fan system 8, the air quantity can be controlled by regulating the opening of the upper air compensating opening 14 on the diffusing main pipe 11 and the opening of the lower air compensating opening 7 on the main hot air pipe 3 respectively, and the cooling air cools the inner layer of the diffusing main pipe 11 and the inner layer of the main hot air pipe 3 respectively through the cyclone sheets 28;
Step five, hot air after temperature adjustment is pressurized by the hot air blower system 17 and then is conveyed into a main pipeline of the diffusing main pipe 11, and then enters the receiving hopper 1 through a plurality of groups of auxiliary pipelines, and meanwhile, each auxiliary pipeline is provided with a first temperature measuring device 12 which can independently monitor and adjust the diffusing temperature in each receiving hopper 1;
Step six, the combustion-supporting fan system 9 then pressurizes and recovers the residual heat and the recovered gas of dust contained in each receiving hopper 1, and then enters the hot blast stove system 6 for mixed combustion to generate heat; and the cycle is performed.
The invention is not limited to the above embodiments, and based on the technical solution disclosed in the invention, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the invention.
Claims (7)
1. The ferroalloy baking and circulating heating device comprises a main support, wherein a plurality of groups of receiving hoppers are arranged on the main support, an automatic gate is correspondingly arranged below each receiving hopper, a weighing system is correspondingly arranged below each automatic gate, and an automatic discharge port is arranged below each weighing system; the device is characterized in that a hot blast stove system, a combustion-supporting fan system, a hot air fan system and a circulating fan system are sequentially arranged beside the main support; the hot blast stove system comprises a hot blast stove air inlet and a hot blast stove air outlet, the hot blast stove air inlet is connected with the combustion-supporting fan system through a first air pipe, and the combustion-supporting fan system is connected with the receiving hopper through a second air pipe; the hot air furnace air outlet is connected with the hot air blower system through a main hot air pipe, and the hot air blower system is connected with the lower part of the receiving hopper through a diffusing main pipe; the main hot air pipe and the diffusing main pipe respectively comprise an inner layer and an external cooling layer; the external cooling layer of the main hot air pipe and the external cooling layer of the diffusing main pipe are respectively connected with a circulating fan system through a third air pipe, and the circulating fan system is connected with the hot air furnace system through a fourth air pipe; the main hot air pipe and the diffusing main pipe are also provided with an air supplementing system in a matched mode; the combustion-supporting fan system comprises a combustion-supporting fan air inlet and a combustion-supporting fan air outlet; the air heater system comprises an air heater air inlet and an air heater air outlet, and the circulating fan system comprises a circulating fan air inlet and a circulating fan air outlet; the air outlet of the combustion-supporting fan is connected with the air inlet of the hot blast stove, the upper part of the receiving hopper is connected with the air inlet of the combustion-supporting fan, the air outlet of the hot blast stove is connected with the air inlet of the hot blast stove, and the air outlet of the hot blast stove is connected with the bottom of the receiving hopper; the air outlet of the air heater and the air inlet of the air heater are respectively connected with the air inlet of the circulating fan, and the air outlet of the circulating fan is connected with the air outlet of the hot blast stove; the inner layer comprises an inner surface and an outer surface, and the external cooling layer comprises a cooling layer inner surface and a cooling layer outer surface; the inner layer and the external cooling layer are arranged at a certain distance from each other; the external cooling layer comprises a cyclone sheet arranged between the outer surface of the inner layer and the inner surface of the cooling layer, and the cyclone sheet is circumferentially arranged on the outer surface of the inner layer according to a certain screw pitch.
2. The ferroalloy baking cycle heating apparatus according to claim 1, wherein: the air supplementing system comprises an upper air supplementing opening arranged on the diffusing main pipe and a lower air supplementing opening arranged on the main hot air pipe; the upper air supply port is arranged at one end of the diffusing main pipe far away from the air outlet of the air heater; the lower air supply port is arranged at one end of the main hot air pipe, which is close to the air outlet of the hot air furnace; the upper air supplementing opening is directly communicated with the external cooling layer of the diffusing main pipe, and the lower air supplementing opening is directly communicated with the external cooling layer of the main hot air pipe.
3. The ferroalloy baking cycle heating apparatus according to claim 1, wherein: the third air pipe comprises a third front air pipe and a third rear air pipe; the inlet of the third front air pipe is arranged near the air inlet of the air heater, the inlet of the third front air pipe is directly communicated with the external cooling layer of the main air heater, the outlet of the third front air pipe is arranged near the air outlet of the air heater, and the outlet of the third front air pipe is directly communicated with the external cooling layer of the diffusing main pipe; the inlet of the third rear air pipe is directly communicated with the external cooling layer of the diffusing main pipe, and the inlet of the third rear air pipe and the outlet of the third front air pipe are positioned at the same height; the outlet of the third rear air pipe is directly connected with the air inlet of the circulating fan, the air outlet of the circulating fan is connected with the inlet of the fourth air pipe, and the outlet of the fourth air pipe is directly communicated with the inner layer of the main hot air pipe.
4. A ferroalloy baking cycle heating apparatus according to any one of claims 1-3, wherein: the main diffusing pipe comprises a main pipe and auxiliary pipes, the diameter of the main pipe is far larger than that of the auxiliary pipes, the auxiliary pipes are provided with a plurality of groups, each auxiliary pipe is arranged at intervals, and each auxiliary pipe is led to the main pipe respectively; a butterfly valve is arranged between each auxiliary pipeline and the main pipeline, and a first temperature measuring device is also arranged on each auxiliary pipeline in a matched mode.
5. A ferroalloy bake cycle heating apparatus according to claim 1 or 2, wherein: the hot blast stove air inlet enters the hot blast stove system through gas burners, the gas burners are provided with a plurality of groups, a butt-clamping butterfly valve is arranged between each gas burner and the hot blast stove air inlet, and a second temperature measuring device is arranged above the hot blast stove air inlet in the hot blast stove system; and a third temperature measuring device is further arranged at the position of the main hot air pipe close to the air outlet of the hot air furnace.
6. A method of operating a ferroalloy bake cycle heating apparatus as set forth in any one of claims 1-5 wherein: comprising
Step one, gas enters a combustion-supporting fan system from a gas burner, the recovered gas containing residual heat and dust thereof is pressurized and recovered, and enters a hot blast stove system for mixed combustion to generate heat, and meanwhile, the temperature of hot air in the hot blast stove system is monitored in real time through a second temperature measuring device arranged above an air inlet of the hot blast stove;
step two, hot air generated after the gas is combusted is pumped into the main hot air pipe through the hot air pipe air outlet by the hot air system, meanwhile, the outlet of the hot air pipe air outlet is provided with a fourth air pipe, cooling air can be continuously provided, at the moment, the hot air and the cooling air are mixed at the hot air pipe air outlet, and meanwhile, the temperature of the main hot air pipe can be monitored in real time by a third temperature measuring device arranged at a position close to the hot air pipe air outlet;
When the temperature deviates from the set value, the temperature can be further adjusted by adjusting the rotating speed of the circulating fan system, and the aim of temperature adjustment is to achieve the purposes of mixing cooling air recovered by the circulating fan system with hot air generated in the hot blast stove system to achieve temperature adjustment and recovering heat dissipation temperatures of the main hot blast pipe and the diffusing main pipe;
Step four, when the temperature cannot be effectively regulated by regulating the rotating speed of the circulating fan system, the air quantity can be controlled by regulating the opening of the upper air supplementing opening on the diffusing main pipe and the opening of the lower air supplementing opening on the main hot air pipe respectively, and the cooling air cools the inner layer of the diffusing main pipe and the inner layer of the main hot air pipe respectively through the cyclone sheets;
step five, hot air after temperature adjustment is pressurized by the hot air system and then is conveyed into a main pipeline of the diffusing main pipe, and then enters the receiving hopper through a plurality of groups of auxiliary pipelines, and meanwhile, a first temperature measuring device is arranged on each auxiliary pipeline and can be used for independently monitoring and adjusting the diffusing temperature in each receiving hopper;
step six, the combustion-supporting fan system is used for pressurizing and recycling residual heat and recycling dust gas contained in each receiving hopper, and then the residual heat and dust recycling gas enter the hot blast stove system for mixed combustion to generate heat; and the cycle is performed.
7. The method according to claim 6, wherein the main hot blast pipe at the air outlet of the hot blast stove is provided with an elbow, and the tail end of the elbow is provided with a third temperature measuring device; the head end of the elbow is provided with a lower air supply port.
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| CN201810398173.1A CN108315519B (en) | 2018-04-28 | 2018-04-28 | Ferroalloy baking circulation heating device and working method thereof |
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| CN201810398173.1A CN108315519B (en) | 2018-04-28 | 2018-04-28 | Ferroalloy baking circulation heating device and working method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201945191U (en) * | 2010-12-21 | 2011-08-24 | 连云港派尔科技发展有限公司 | Novel alloy baking device |
| CN205115520U (en) * | 2015-09-06 | 2016-03-30 | 中冶南方工程技术有限公司 | Online baking equipment of alloy and alloy toast charging system on line |
| CN105466212A (en) * | 2016-01-29 | 2016-04-06 | 云南天高镍业有限公司 | Vertical heat exchange type alloy baking oven system |
| CN107388798A (en) * | 2017-07-07 | 2017-11-24 | 山西东昌实业有限公司 | A kind of Corn Drying System |
| CN208517450U (en) * | 2018-04-28 | 2019-02-19 | 江苏欧亚环保科技有限公司 | A kind of ferroalloy baking circulating heater |
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2018
- 2018-04-28 CN CN201810398173.1A patent/CN108315519B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201945191U (en) * | 2010-12-21 | 2011-08-24 | 连云港派尔科技发展有限公司 | Novel alloy baking device |
| CN205115520U (en) * | 2015-09-06 | 2016-03-30 | 中冶南方工程技术有限公司 | Online baking equipment of alloy and alloy toast charging system on line |
| CN105466212A (en) * | 2016-01-29 | 2016-04-06 | 云南天高镍业有限公司 | Vertical heat exchange type alloy baking oven system |
| CN107388798A (en) * | 2017-07-07 | 2017-11-24 | 山西东昌实业有限公司 | A kind of Corn Drying System |
| CN208517450U (en) * | 2018-04-28 | 2019-02-19 | 江苏欧亚环保科技有限公司 | A kind of ferroalloy baking circulating heater |
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| CN108315519A (en) | 2018-07-24 |
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