CN110425894A - A kind of smoke circulating system - Google Patents
A kind of smoke circulating system Download PDFInfo
- Publication number
- CN110425894A CN110425894A CN201910826332.8A CN201910826332A CN110425894A CN 110425894 A CN110425894 A CN 110425894A CN 201910826332 A CN201910826332 A CN 201910826332A CN 110425894 A CN110425894 A CN 110425894A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- temperature flue
- heat storage
- low
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000779 smoke Substances 0.000 title claims abstract description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 155
- 239000003546 flue gas Substances 0.000 claims abstract description 155
- 238000005338 heat storage Methods 0.000 claims abstract description 110
- 230000001172 regenerating effect Effects 0.000 claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims description 13
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 6
- 239000010962 carbon steel Substances 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 235000010210 aluminium Nutrition 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/56—Manufacture of steel by other methods
- C21C5/562—Manufacture of steel by other methods starting from scrap
- C21C5/565—Preheating of scrap
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
- F27D13/002—Preheating scrap
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
- F28D17/02—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using rigid bodies, e.g. of porous material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
- F28D17/04—Distributing arrangements for the heat-exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/007—Systems for reclaiming waste heat including regenerators
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Air Supply (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a kind of smoke circulating systems, comprising: is built-in with a pair of of heat storage tank of regenerative chamber；It is connected to the circulation line of heat storage tank described in side, heat storage tank and steel scrap hopper described in the other side, the circulation line is divided into high-temperature flue gas pipeline and low-temperature flue gas pipeline；And multiple reversal valves on the circulation line are set；Wherein, it is additionally provided on the circulation line for being sent again after sending the regenerative chamber to other side heat storage tank to be heated to the condition of high temperature low-temperature flue gas pressurization after the cooling of the regenerative chamber of side heat storage tank to the air-introduced machine of the steel scrap hopper, the air-introduced machine is arranged on the low-temperature flue gas pipeline.The smoke circulating system has the advantages that structure is simple, long service life.
Description
Technical field
The present invention relates to industrial furnace technology field more particularly to the smoke circulating systems of scrap steel preheating furnace.
Background technique
As the demand in steel industry pneumatic steelmaking to scrap ratio is continuously increased, the preheating of steel scrap reduces energy to converter
Consumption increases yield and plays increasingly important role, and scrap steel preheating equipment is also increasingly favored as a result,.Flue gas recirculation system
System is the important component of scrap steel preheating equipment, and smoke circulating system is used to provide high-temperature flue gas to steel scrap hopper to reach pre-
The purpose of hot steel scrap.Defect existing for the smoke circulating system of existing scrap steel preheating equipment has in the market: air-introduced machine is arranged at
On high-temperature pipe, work at high temperature for a long time so that air-introduced machine is easy to aging, to influence the normal work of air-introduced machine, need through
It is often overhauled, the service life of air-introduced machine is short, and therefore, it is necessary to study a kind of smoke circulating systems.
Summary of the invention
Shortcoming present in view of the above technology can effectively improve air-introduced machine the present invention provides one kind and use the longevity
The smoke circulating system of life.
The technical solution adopted by the present invention to solve the technical problems is: a kind of smoke circulating system, comprising: is built-in with storage
A pair of of heat storage tank in hot cell；It is connected to the circulation line of heat storage tank described in side, heat storage tank and steel scrap hopper described in the other side, it is described
Circulation line is divided into high-temperature flue gas pipeline and low-temperature flue gas pipeline；And multiple reversal valves on the circulation line are set；
Wherein, it is additionally provided on the circulation line for sending the low-temperature flue gas pressurization after the cooling of the regenerative chamber of side heat storage tank
Regenerative chamber to other side heat storage tank is heated to sending again after the condition of high temperature to the air-introduced machine of the steel scrap hopper, and the air-introduced machine is set
It sets on the low-temperature flue gas pipeline.
Preferably, heat supply burner is provided on the heat storage tank.
Preferably, the regenerative chamber is formed in the middle part of the heat storage tank, the top of the heat storage tank is and the accumulation of heat
The combustion chamber of room connection, the lower part of the heat storage tank are to be connected to the regenerative chamber for caching cryogenic gas for the air inducing
The surge chamber that machine siphons away, wherein the air-flow in the heat storage tank flows above and below.
Preferably, the regenerative chamber include several heat storages, be fixed at below the heat storage be used to support it is described
The steel grating of heat storage and it is arranged in above the heat storage for protecting the floater guide block of the heat storage.
Preferably, the heat storage is aluminum heat-storing sphere.
Preferably, the value range of the heat storage diameter are as follows: 15~25mm.
Preferably, value range of the heat storage in the upward distribution height of upper and lower are as follows: 400~600mm.
Preferably, the heat storage is 500mm in the upward distribution height of upper and lower.
Preferably, the reversal valve includes one first high-temperature flue gas reversal valve, one second high-temperature flue gas reversal valve, one first low temperature
Fume reversing valve, one second low-temperature flue gas reversal valve, a third low-temperature flue gas reversal valve and one the 4th low-temperature flue gas reversal valve, institute
Stating circulation line includes one being provided with the first high-temperature flue gas pipeline of the first high-temperature flue gas reversal valve, one being provided with described
The first low temperature cigarette that second high-temperature flue gas pipeline of two high-temperature flue gas reversal valves, one are provided with the first low-temperature flue gas reversal valve
Feed channel, one are provided with the second low-temperature flue gas pipeline of the second low-temperature flue gas reversal valve, one are provided with the third low temperature
The 4th low-temperature flue gas pipe that the third low-temperature flue gas pipeline of fume reversing valve, one are provided with the 4th low-temperature flue gas reversal valve
Road, wherein the combustion chamber of the one end connection side heat storage tank of the first high-temperature flue gas pipeline, the other end connection are described useless
Steel hopper, the one end of the second high-temperature flue gas pipeline are connected to described in the combustion chamber of other side heat storage tank, the other end connection
Steel scrap hopper, the one end of the first low-temperature flue gas pipeline is connected to the air inlet of the air-introduced machine, the other end and side
The surge chamber of heat storage tank is connected to, and the one end of the second low-temperature flue gas pipeline is connected to the air inlet of the air-introduced machine, is another
End is connected to the surge chamber of other side heat storage tank, the outlet air of the one end and the air-introduced machine of the third low-temperature flue gas pipeline
Mouth connection, the other end are connected to the surge chamber of side heat storage tank, and the one end of the 4th low-temperature flue gas pipeline draws with described
The air outlet connection of blower, the other end are connected to the surge chamber of other side heat storage tank.
Preferably, the first low-temperature flue gas pipeline, the second low-temperature flue gas pipeline, the third low-temperature flue gas pipeline
Carbon steel pipes, the first high-temperature flue gas pipeline and the second high-temperature flue gas pipeline are used with the 4th low-temperature flue gas pipeline
It is lined using carbon steel pipes.
Compared with prior art, the present invention the beneficial effect is that: smoke circulating system provided by the invention, air-introduced machine are located at low
On warm flue, the service life of air-introduced machine is effectively extended, to extend the use longevity of entire smoke circulating system
Life, avoids frequent maintenance, effectively reduces use cost；
It is provided with a pair of of heat storage tank, heat supply burner is provided on each heat storage tank, when the heat supply burner on the heat storage tank of side exists
When work, the heat supply burner on the heat storage tank of the other side is flameout state, the working strength of heat supply burner is effectively reduced, certain
The service life of heat supply burner is extended in degree.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of smoke circulating system of the present invention；
Fig. 2 is the second structural representation of smoke circulating system of the present invention；
Fig. 3 is the schematic diagram of internal structure of heat storage tank of the invention.
In figure: 10, the first heat storage tank；11, the first regenerative chamber；111, heat storage；112, steel grating；113, floater guide block；12, it fires
Burn room；13, surge chamber；20, the second heat storage tank；21, the second regenerative chamber；30, the first heat supply burner；40, the second heat supply burner；
50, air-introduced machine；60, steel scrap hopper；61, the first high-temperature flue gas pipeline；611, the first high-temperature flue gas reversal valve；62, the second high temperature
Flue；621, the second high-temperature flue gas reversal valve；63, the first low-temperature flue gas pipeline；631, the first low-temperature flue gas reversal valve；
64, the second low-temperature flue gas pipeline；641, the second low-temperature flue gas reversal valve；65, third low-temperature flue gas pipeline；651, third low temperature cigarette
Gas reversal valve；66, the 4th low-temperature flue gas pipeline；661, the 4th low-temperature flue gas reversal valve.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
As shown in Figure 1 to Figure 3, the present invention provides a kind of smoke circulating systems, comprising: is built-in with a pair of of regenerative chamber and stores
A pair of of heat storage tank is respectively designated as the first heat storage tank 10 and the second heat storage tank 20, described first stores for the ease of illustrating by hot tank
It is formed with the first regenerative chamber 11 in hot tank 10, the second regenerative chamber 21, first accumulation of heat are formed in second heat storage tank 20
It is provided with the first heat supply burner 30 on case 10, the second heat supply burner 40 is provided on second heat storage tank 20；It is connected to described
The circulation line of one heat storage tank 10, second heat storage tank 20 and steel scrap hopper 60, the circulation line are divided into high-temperature flue gas pipe
Road and low-temperature flue gas pipeline, the high-temperature flue gas pipeline are the pipeline for conveying high-temperature flue gas, and the low-temperature flue gas pipeline is conveying
The pipeline of low-temperature flue gas；And multiple reversal valves on the circulation line are set；Wherein, first heat storage tank 10 and institute
The two sides that the second heat storage tank 20 is located at the steel scrap hopper 60 are stated, as shown in Figure 1, being additionally provided on the circulation line for inciting somebody to action
Low-temperature flue gas pressurization after the cooling of the first regenerative chamber 11 of the first heat storage tank 10 is sent to the second of second heat storage tank 20
Regenerative chamber 21 is heated to sending again after the condition of high temperature to the air-introduced machine 50 of the steel scrap hopper 60, and the air-introduced machine 50 is arranged described
On low-temperature flue gas pipeline, or, as shown in Fig. 2, being additionally provided on the circulation line for the second heat storage tank will to be passed through
Low-temperature flue gas pressurization after 20 the second regenerative chamber 21 cooling send the first regenerative chamber 11 to first heat storage tank 10 to be heated to
It is sent again after the condition of high temperature to the air-introduced machine 50 of the steel scrap hopper 60；When being in working condition as shown in Figure 1, at this point, described
First heat supply burner 30 is in combustion state, and first regenerative chamber 11 is in heat storage state, and the second heat supply burner 40 is
Flameout state, second regenerative chamber 21 are in heat release state, are passed through by the high-temperature flue gas that the first heat supply burner 30 generates
First regenerative chamber 11 is in low-temperature flue gas after cooling down, this is because first regenerative chamber 11 in heat storage state can be fast
Speed absorbs heat to which high-temperature flue gas is changed into low-temperature flue gas, and the air-introduced machine 50 will cool down by first regenerative chamber 11
Low-temperature flue gas pressurization send to high-temperature flue gas is heated in second regenerative chamber 21, second regenerative chamber 21 can heat low
Warm flue gas be because are as follows: second regenerative chamber 21 is in heat release state, can quick release heat for heat low-temperature flue gas with
Low-temperature flue gas is set to be changed into high-temperature flue gas, the air-introduced machine 50 again send high-temperature flue gas to the steel scrap hopper 60；When in such as
Shown in Fig. 2 when working condition, at this point, the first heat supply burner 30 is in flameout state, first regenerative chamber 11 is in and puts
Warm status, the second heat supply burner 40 are in combustion state, and second regenerative chamber 21 is in heat storage state, by described second
The high-temperature flue gas that heat supply burner 40 generates is in low-temperature flue gas after second regenerative chamber 21 cooling, this is because being in accumulation of heat
Second regenerative chamber 21 of state can absorb heat quickly to which high-temperature flue gas is changed into low-temperature flue gas, the air-introduced machine
The 50 low-temperature flue gas pressurizations that will cool down by second regenerative chamber 21 are sent to being heated to high temperature cigarette in first regenerative chamber 11
Gas, first regenerative chamber 11 can heat low-temperature flue gas be because are as follows: first regenerative chamber 11 is in heat release state, can be fast
Quick-release thermal discharge is for heating low-temperature flue gas so that low-temperature flue gas is changed into high-temperature flue gas, in the present solution, first regenerative chamber
11 is opposite with the working condition of second regenerative chamber 21.
As an embodiment of this programme, first heat storage tank 10 is identical with the structure of second heat storage tank 20, existing
The internal structure of heat storage tank is illustrated by taking first heat storage tank 10 as an example, as shown in figure 3, first heat storage tank 10
Middle part be formed with first regenerative chamber 11, the top of first heat storage tank 10 is to be connected to first regenerative chamber 11
Combustion chamber 12, the lower part of first heat storage tank 10 is is connected to for caching cryogenic gas for institute with first regenerative chamber 11
State the surge chamber 13 that air-introduced machine 50 siphons away, wherein the combustion chamber 12 is connect with the first heat supply burner 30, and described first stores
Air-flow in hot tank 10 flows above and below.
As an embodiment of this programme, first regenerative chamber 11 is identical with the structure of second regenerative chamber 21, existing
It is explained by taking first regenerative chamber 11 as an example, as shown in figure 3, first regenerative chamber 11 includes several heat storages 111, fixes
The steel grating 112 for being used to support the heat storage 111 below the heat storage 111 is set and is arranged in the heat storage 111
Top is used to protect the floater guide block 113 of the heat storage；In the present solution, when the first heat supply burner 30 is in combustion state,
The first heat supply burner 30 generates high-temperature flue gas in the combustion chamber 12, and high-temperature flue gas passes through first regenerative chamber 11
When, the heat storage in first regenerative chamber 11 absorbs the heat of high-temperature flue gas, and the heat of high-temperature flue gas is stored in the first storage
In hot cell 11, first regenerative chamber 11 is in heat storage state, at this point, being low-temperature flue gas in the surge chamber 13.
As an embodiment of this programme, as shown in figure 3, the heat storage 111 is aluminum heat-storing sphere, several aluminums
Air-flow can be divided into the airflow channel of very little by heat-storing sphere, when flue gas passes through in the heat storage 111, be capable of forming strong
Turbulent region, the heat storage 111 can be effectively impacted, to realize the conveying of heat.
As an embodiment of this programme, as shown in figure 3, the value range of 111 diameter of the heat storage are as follows: 15~
25mm, when 111 diameter of heat storage is in this range, the heat transfer radius of the heat storage 111 is suitable for, thermal resistance is small, density is high,
Thermal conductivity is good.
As an embodiment of this programme, as shown in figure 3, the value of 111 diameter of the heat storage is 20mm, the accumulation of heat
The diameter value of body 111 cannot it is excessive, can not be too small, this is because the excessive or too small heat storage 111 is not achieved
Preferable heat transfer, thermally conductive effect.
As an embodiment of this programme, as shown in figure 3, the heat storage 111 is in the upward distribution height of upper and lower
Value range are as follows: 400~600mm, when the distribution height of the heat storage 111 is in this range, 11 energy of the first regenerative chamber
Enough preferable cooling high temperature flue gas or heating low-temperature flue gas.
As an embodiment of this programme, the heat storage is 500mm in the upward distribution height of upper and lower.
As an embodiment of this programme, as depicted in figs. 1 and 2, the reversal valve includes one first high-temperature flue gas reversal valve
611, one second high-temperature flue gas reversal valve 621, one first low-temperature flue gas reversal valve 631, one second low-temperature flue gas reversal valve 641,
One third low-temperature flue gas reversal valve 651 and one the 4th low-temperature flue gas reversal valve 661, the circulation line are provided with described including one
First high-temperature flue gas pipeline 61, one of the first high-temperature flue gas reversal valve 611 is provided with the second high-temperature flue gas reversal valve 621
The first low-temperature flue gas pipeline 63, one that second high-temperature flue gas pipeline 62, one is provided with the first low-temperature flue gas reversal valve 631 is set
The the second low-temperature flue gas pipeline 64, one for being equipped with the second low-temperature flue gas reversal valve 641 is provided with the third low-temperature flue gas and changes
The 4th low-temperature flue gas pipe of the 4th low-temperature flue gas reversal valve 661 is provided with to the third low-temperature flue gas pipeline 65, one of valve 651
Road 66, wherein the one end of the first high-temperature flue gas pipeline 61 is connected to combustion chamber, the other end of first heat storage tank 10
It is connected to the steel scrap hopper 60, the one end of the second high-temperature flue gas pipeline 62 is connected to the burning of second heat storage tank 20
Room, the other end are connected to the steel scrap hopper 60, one end and the air-introduced machine 50 of the first low-temperature flue gas pipeline 63
Air inlet connection, the other end are connected to the surge chamber of first heat storage tank 10, and the one of the second low-temperature flue gas pipeline 64
End is connected to the air inlet of the air-introduced machine 50, the other end is connected to the surge chamber of second heat storage tank 20, and described
The one end of three low-temperature flue gas pipelines 65 is connected to the air outlet of the air-introduced machine 50, the other end and first heat storage tank 10
Surge chamber connection, the one end of the 4th low-temperature flue gas pipeline 66 is connected to the air outlet of the air-introduced machine 50, the other end
Portion is connected to the surge chamber of second heat storage tank 20；In the present solution, the air-introduced machine 50 is arranged on low-temperature flue gas pipeline, energy
The enough service life for effectively extending the air-introduced machine 50 avoids to extend the service life of entire smoke circulating system
Frequent maintenance, has effectively saved use cost.
As an embodiment of this programme, the first low-temperature flue gas pipeline 63, the second low-temperature flue gas pipeline 64, institute
Third low-temperature flue gas pipeline 65 and the 4th low-temperature flue gas pipeline 66 are stated using carbon steel pipes, the first high-temperature flue gas pipeline
61 and the second high-temperature flue gas pipeline 62 using carbon steel pipes it is lined.
As an embodiment of this programme, the first high-temperature flue gas reversal valve 611, the second high-temperature flue gas reversal valve
621, the first low-temperature flue gas reversal valve 631, the second low-temperature flue gas reversal valve 641, third low-temperature flue gas commutation
Valve 651 and the 4th low-temperature flue gas reversal valve 661 are all made of pneumatic closed butterfly valve.
Although the embodiments of the present invention have been disclosed as above, but it is not limited in listed fortune in specification and embodiments
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily real
Now other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is not limited to
Specific details and legend shown and described herein.
Claims (10)
1. a kind of smoke circulating system characterized by comprising
It is built-in with a pair of of heat storage tank of regenerative chamber；
It is connected to the circulation line of heat storage tank described in side, heat storage tank and steel scrap hopper (60) described in the other side, the circulation line
It is divided into high-temperature flue gas pipeline and low-temperature flue gas pipeline；And
Multiple reversal valves on the circulation line are set；
Wherein, it is additionally provided on the circulation line for adding the low-temperature flue gas after the cooling of the regenerative chamber of side heat storage tank
The regenerative chamber of force feed to other side heat storage tank is heated to sending again after the condition of high temperature to the air-introduced machine (50) of the steel scrap hopper (60),
The air-introduced machine (50) is arranged on the low-temperature flue gas pipeline.
2. smoke circulating system as described in claim 1, which is characterized in that be provided with heat supply burner on the heat storage tank.
3. smoke circulating system as described in claim 1, which is characterized in that be formed with the accumulation of heat in the middle part of the heat storage tank
Room, the top of the heat storage tank are the combustion chamber being connected to the regenerative chamber, and the lower part of the heat storage tank is and the regenerative chamber
It is connected to the surge chamber siphoned away for caching cryogenic gas for the air-introduced machine (50), wherein on the air-flow in the heat storage tank,
Lower flowing.
4. smoke circulating system as described in claim 1, which is characterized in that the regenerative chamber includes several heat storages, fixation
The steel grating for being used to support the heat storage below the heat storage is set and is arranged above the heat storage for protecting
The floater guide block of the heat storage.
5. smoke circulating system as claimed in claim 4, which is characterized in that the heat storage is aluminum heat-storing sphere.
6. smoke circulating system as claimed in claim 4, which is characterized in that the value range of the heat storage diameter are as follows: 15
~25mm.
7. smoke circulating system as claimed in claim 4, which is characterized in that the heat storage distribution upward in upper and lower
The value range of height are as follows: 400~600mm.
8. smoke circulating system as claimed in claim 7, which is characterized in that the heat storage distribution upward in upper and lower
Height is 500mm.
9. smoke circulating system as claimed in claim 2, which is characterized in that the reversal valve includes that one first high-temperature flue gas changes
To valve (611), one second high-temperature flue gas reversal valve (621), one first low-temperature flue gas reversal valve (631), one second low-temperature flue gas
Reversal valve (641), tetra- low-temperature flue gas reversal valve (661) of third low-temperature flue gas reversal valve (651) He Yi, the circulation line
The first high-temperature flue gas pipeline (61) of the first high-temperature flue gas reversal valve (611) is provided with including one, one is provided with described
Second high-temperature flue gas pipeline (62) of two high-temperature flue gas reversal valves (621), one are provided with the first low-temperature flue gas reversal valve
(631) the second low-temperature flue gas that the first low-temperature flue gas pipeline (63), one are provided with the second low-temperature flue gas reversal valve (641)
Pipeline (64), one have been provided with the third low-temperature flue gas pipeline (65) of the third low-temperature flue gas reversal valve (651), a setting
State the 4th low-temperature flue gas pipeline (66) of the 4th low-temperature flue gas reversal valve (661), wherein the first high-temperature flue gas pipeline (61)
The one end connection combustion chamber of side heat storage tank, the other end be connected to the steel scrap hopper (60), second high-temperature flue gas
The one end connection combustion chamber of other side heat storage tank, the other end of pipeline (62) are connected to the steel scrap hopper (60), and described the
The one end of one low-temperature flue gas pipeline (63) is connected to the air inlet of the air-introduced machine (50), the other end and side heat storage tank
Surge chamber connection, the one end of the second low-temperature flue gas pipeline (64) are connected to the air inlet of the air-introduced machine (50), are another
End is connected to the surge chamber of other side heat storage tank, the one end and the air-introduced machine of the third low-temperature flue gas pipeline (65)
(50) air outlet connection, the other end are connected to the surge chamber of side heat storage tank, the 4th low-temperature flue gas pipeline (66)
One end is connected to the air outlet of the air-introduced machine (50), the other end is connected to the surge chamber of other side heat storage tank.
10. smoke circulating system as claimed in claim 9, which is characterized in that the first low-temperature flue gas pipeline (63), described
Second low-temperature flue gas pipeline (64), the third low-temperature flue gas pipeline (65) and the 4th low-temperature flue gas pipeline (66) use carbon
Steel steel pipe, the first high-temperature flue gas pipeline (61) and the second high-temperature flue gas pipeline (62) are lined using carbon steel pipes.
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| CN201910826332.8A CN110425894A (en) | 2019-09-03 | 2019-09-03 | A kind of smoke circulating system |
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