CN110117686A - A kind of preheating system of plate heat exchanger of hot blast furnace - Google Patents
A kind of preheating system of plate heat exchanger of hot blast furnace Download PDFInfo
- Publication number
- CN110117686A CN110117686A CN201810122763.1A CN201810122763A CN110117686A CN 110117686 A CN110117686 A CN 110117686A CN 201810122763 A CN201810122763 A CN 201810122763A CN 110117686 A CN110117686 A CN 110117686A
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- Prior art keywords
- plate
- gas
- preheater
- board
- heat exchanger
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- 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
Abstract
The invention discloses a kind of preheating system of plate heat exchanger of hot blast furnace, including the first board-like gas preheater, first plate air preheater, second board-like gas preheater, second plate air preheater, hot-blast stove, additional combustion furnace, air inlet pipe, gas inlet pipe road, the smoke discharging end of hot-blast stove connects flue, flue is separately connected the flue gas input terminal of the first board-like gas preheater and the first plate air preheater in parallel, flue gas input terminal of its flue gas output end through first outlet valve connection the second board-like gas preheater and the second plate air preheater in parallel, gas inlet pipe road is connect with the input terminal of the first board-like gas preheater, first board-like gas preheater concatenates the second board-like gas preheater, air inlet pipe is connect with the input terminal of the first plate air preheater, first plate type air Preheater concatenates the second plate air preheater；Pre-heating system of the invention ensure that the preheating at least once of coal gas and combustion air.
Description
Technical field
The present invention relates to blast furnace in metallurgical industry ironmaking technology field more particularly to a kind of plate heat exchanger of hot blast furnace preheating systems
System.
Background technique
An energy-saving effective method of blast furnace iron-making process is to improve blast furnace to enter furnace wind-warm syndrome, and blast furnace air temperature often mentions
100 DEG C high, iron coke per ton ratio can reduce 20kg, increase yield 4%, can also increase 50kg injecting coal quantity.Therefore, each enterprise all ten
Divide to pay attention to for wind-warm syndrome being maintained at and carries out smelting operation in a higher level.In the prior art, frequently with method be heat
Wind furnace, hot-blast stove is to provide the equipment of hot wind to blast furnace, its working principle is that generating high temperature cigarette by burner combustion coal gas
Heat storage heat exchange in gas, with hot-blast stove, high-temperature flue gas become exhaust gas and are discharged from flue.Followed by cold wind passes through heat storage, with
Heat storage carries out heat exchange and becomes hot wind high temperature air.Wherein contain amount of heat in exhaust gas of hot-blast stove, in order to energy saving,
And in order to improve hot blast temperature, various heat exchangers are generallyd use to recycle exhaust gas of hot-blast stove waste heat, to coal gas and/or combustion air
It is preheated.
But existing pre-heating system still has following problem: coal gas and combustion air into hot-blast stove do not obtain
Effectively preheating, causes hot-blast stove to need to extend heating time, is just able to satisfy the flue gas of output from hot-blast stove and reaches temperature requirement,
The service efficiency of hot-blast stove is lower.
Summary of the invention
It is not preheated effectively to solve coal gas and combustion air in existing pre-heating system, leads to the use of hot-blast stove
The problem of low efficiency, the object of the present invention is to provide a kind of preheating system of plate heat exchanger of hot blast furnace.
To achieve the goals above, the present invention adopts the following technical scheme: a kind of preheating system of plate heat exchanger of hot blast furnace,
Including the first board-like gas preheater, the first plate air preheater, the second board-like gas preheater, the preheating of the second plate type air
Device, hot-blast stove, flue, additional combustion furnace, air inlet pipe, air outlet duct, gas inlet pipe road, coal gas output
Pipeline, the smoke discharging end of the hot-blast stove connect flue, and the flue is separately connected the first board-like coal gas in parallel
The flue gas input terminal of preheater and the first plate air preheater, the first board-like gas preheater and the first plate type air are pre-
The flue gas output end of hot device is preheated through the connection of first outlet valve the second board-like gas preheater and the second plate type air in parallel
The flue gas output end of the flue gas input terminal of device, the second board-like gas preheater and the second plate air preheater connects cigarette
Chimney, the flue gas that the chimney also passes through the 4th outlet valve and the first board-like gas preheater and the first plate air preheater are defeated
The flue gas output end of outlet connection, the first board-like gas preheater and the first plate air preheater is additionally provided with temperature sense
Device is answered, first imported valve of gas inlet pipe road is connect with the input terminal of the first board-like gas preheater, and first is board-like
The output end of gas preheater concatenates the input terminal of the second board-like gas preheater, the output end warp of the second board-like gas preheater
Second outlet valve is to coal gas output channel, and the air inlet pipe is through the second imported valve and the first plate air preheater
Input terminal connection, the output end of the first plate air preheater concatenates the input terminal of the second plate air preheater, the second plate
The output end of regenerative air heater leads on the output channel of the additional combustion furnace through third outlet valve to air outlet duct
Cross the flue gas input terminal of third imported valve concatenation the second board-like gas preheater and the second plate air preheater in parallel.
The temperature sense being arranged by the flue gas output end of the first board-like gas preheater and the first plate air preheater
Device induction discharge flue gas temperature, when discharge flue gas temperature it is too low, show the first board-like gas preheater and the first board-like sky
Air preheater does not preheat coal gas and air effectively, closes first outlet valve at this time, opens third imported valve, the 4th
Outlet valve, additional combustion furnace are fully warmed-up the second board-like gas preheater of inflow and the second plate air preheater,
Reach temperature needed for entering hot-blast stove, the flue gas that the first board-like gas preheater and the first plate air preheater are discharged is direct
Into chimney；When temperature inductor sense discharge flue gas temperature it is higher, show the first board-like gas preheater and the first plate
Regenerative air heater achievees the effect that preheating to coal gas and air, closes third imported valve at this time, is selected according to the height of temperature
It selects and opens first outlet valve, closes the 4th outlet valve, continue to recycle waste heat, or closing first outlet valve,
The 4th outlet valve is opened, by the flue gas direct emission by once exchanging heat；When temperature inductor senses the temperature of discharge flue gas
Height is spent, needs to continue to recycle waste gas residual heat, closes third imported valve, open first outlet valve, close the 4th outlet valve
The flue gas of door, the first board-like gas preheater and the discharge of the first plate air preheater continues to flow into the second board-like gas preheater
In the second plate air preheater, guarantee fully absorbing for waste gas residual heat, improves the utilization rate of heat.
Using the above scheme, ensure that the preheating at least once of coal gas and combustion air, it is preheated after coal gas and combustion-supporting
Air can be rapidly reached temperature requirement in hot-blast stove, be used for blast furnace iron-making process.
Wherein, first plate air preheater and the second plate air preheater structure are identical.
Preferably, first plate air preheater, including plate package, the plate package is by muti-piece heat exchanger plates
Piece is laminated in the same direction, and the heat exchange plate includes heat exchanger plate body, and the heat exchanger plate body is square, the heat exchanger plates sheet
The periphery of the upper end edge surrounding of body is respectively arranged with fin, and the length of the fin is less than the side length of heat exchanger plate body, described to change
Cylinder is provided at left and right sides of hot plate ontology lower end, the cylindrical end portions are provided with the groove being used cooperatively with fin, cylinder
Length it is equal with the side length of heat exchanger plate body, the height of cylinder is greater than the height of fin, the upper and lower surface of the heat exchange plate
It is respectively arranged with fins set, the fins set is arranged alternately by linear type fin and baffling type fin, adjacent heat exchange plate
It is staggered 90 °, forms orthogonal runner, the top of the plate package is provided with the first fixed plate, and it is fixed that bottom end is provided with second
Plate, first fixed plate, the second fixed plate are connected by fastener.
Heat exchange plate realizes preliminary position-limiting action by the mating connection between fin and groove two-by-two, two-by-two heat exchange plate
Between constitute runner for flue gas or air circulation, the top setting first of the orthogonal setting of adjacent channels, plate package is fixed
The second fixed plate, being fixedly connected between the first fixed plate, the second fixed plate, so that is be folded with layer by layer changes is arranged in plate, bottom end
Hot plate piece constitutes an entirety, and it is cumbersome to avoid preheating plate bolt connecting mode bring two-by-two；Positive and negative the two of heat exchange plate
Face is respectively arranged with fins set, and fins set accelerates heat transfer, improves the heat exchange property between flue gas and air.
Wherein, the heat exchange plate is stainless steel material.
Wherein, the baffling type fin includes diversion division and baffling portion, and the angle between the diversion division and baffling portion is
10-90°。
When air-flow enters baffling portion by diversion division, the flow direction of air-flow changes, multiple linear type fins and baffling
Type fin is used alternatingly, so that replacing for cocurrent and adverse current occurs for air-flow, the angle between diversion division and baffling portion is smaller, cocurrent
Higher with the frequency of adverse current, heat transfer effect is better；But the angle between diversion division and baffling portion is smaller, the flowing resistance of air-flow
Power is bigger, and flow rate is slack-off, influences heat transfer rate.
Preferably, the angle between the diversion division and baffling portion is 10-25 °.
Heat transfer effect and heat exchange speed when the angle between diversion division and baffling portion is 10-25 °, between flue gas and air
Degree can reach industrial applicability requirement.
Wherein, first fixed plate, the second fixed plate are high temperature resistant material.
Wherein, the structure of the described first board-like gas preheater and the second board-like gas preheater is identical.
Wherein, the described first board-like gas preheater is corrugated plate dst heat transfer element.
Compared with prior art, the present invention realize the utility model has the advantages that preheating system of plate heat exchanger of hot blast furnace of the present invention is protected
Demonstrate,proved the preheating at least once of coal gas and combustion air, it is preheated after coal gas and combustion air can be reached rapidly in hot-blast stove
To temperature requirement, it to be used for blast furnace iron-making process；Preheating system of plate heat exchanger of hot blast furnace of the present invention is board-like using specific structure
Air preheater improves the heat transfer rate of flue gas and air, and the high temperature air of acquisition enters hot-blast stove, accelerates coal gas in hot-blast stove
Burning.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, present invention be described in more detail:
Fig. 1 is the working principle diagram of preheating system of plate heat exchanger of hot blast furnace of the present invention；
Fig. 2 is the first plate air preheater or the preheating of the second plate type air in preheating system of plate heat exchanger of hot blast furnace of the present invention
The structural schematic diagram of device；
Fig. 3 is the structural schematic diagram of heat exchange plate in preheating system of plate heat exchanger of hot blast furnace of the present invention；
Fig. 4 is structural schematic diagram when Fig. 3 is inverted；
Structural schematic diagram when Fig. 5 is two heat exchange plate stackings in preheating system of plate heat exchanger of hot blast furnace of the present invention；
Structural schematic diagram when Fig. 6 is three heat exchange plate stackings in preheating system of plate heat exchanger of hot blast furnace of the present invention；
Fig. 7 is the structural schematic diagram of baffling type fin in preheating system of plate heat exchanger of hot blast furnace of the present invention.
Wherein: plate package 1, heat exchange plate 2, heat exchanger plate body 3, cylinder 4, fin 5, groove 6, runner 7, first is fixed
Plate 8, the second fixed plate 9, fastener 10, fins set 11, baffling type fin 12, diversion division 13, baffling portion 14, the first board-like coal gas
Preheater 15, the first plate air preheater 16, the second board-like gas preheater 17, the second plate air preheater 18, hot wind
Furnace 19, flue 20, additional combustion furnace 21, air inlet pipe 22, air outlet duct 23, gas inlet pipe road 24, coal
Gas output channel 25, first outlet valve 26, chimney 27, the 4th outlet valve 28, temperature inductor 29, third imported valve
30。
Specific embodiment
Such as Fig. 1, a kind of preheating system of plate heat exchanger of hot blast furnace, including the first board-like gas preheater 15, first is board-like
Air preheater 16, the second board-like gas preheater 17, the second plate air preheater 18, hot-blast stove 19, flue 20 are attached
Add combustion furnace 21, air inlet pipe 22, air outlet duct 23, gas inlet pipe road 24, coal gas output channel 25, hot-blast stove
19 smoke discharging end connects flue 20, and flue 20 is separately connected the first board-like gas preheater 15 and first in parallel
The flue gas input terminal of plate air preheater 16, the flue gas of the first board-like gas preheater 15 and the first plate air preheater 16
Output end connects the second board-like gas preheater 17 and the second plate air preheater 18 in parallel through first outlet valve 26
Flue gas input terminal, the second board-like gas preheater 17 connect chimney 27 with the flue gas output end of the second plate air preheater 18,
Chimney 27 also passes through the flue gas of the 4th outlet valve 28 and the first board-like gas preheater 15 and the first plate air preheater 16
The flue gas output end of output end connection, the first board-like gas preheater 15 and the first plate air preheater 16 is additionally provided with temperature
Inductor 29, gas inlet pipe road 24 are connect through the first imported valve with the input terminal of the first board-like gas preheater 15, and first
The output end of board-like gas preheater 15 concatenates the input terminal of the second board-like gas preheater 17, the second board-like gas preheater 17
Output end through second outlet valve to coal gas output channel 25, air inlet pipe 22 is board-like through the second imported valve and first
The input terminal of air preheater 16 connects, and the output end of the first plate air preheater 16 concatenates the second plate air preheater 18
Input terminal, the output end of the second plate air preheater 18 is through third outlet valve to air outlet duct 23, additional combustion
The second board-like gas preheater 17 and the second board-like sky in parallel are concatenated on the output channel of furnace 21 by third imported valve 30
The flue gas input terminal of air preheater 18.
The exhaust gas that hot-blast stove 19 is discharged respectively enters the first board-like gas preheater 15 and the first plate by flue 20
Regenerative air heater 16 enters first preheating to coal gas and air, is located at the first board-like gas preheater 15 and the first board-like sky
The temperature inductor 29 of 16 flue gas output end of air preheater is for monitoring from the first board-like gas preheater 15 and the first board-like sky
The flue-gas temperature that air preheater 16 is discharged shows the first board-like gas preheater 15 and the first plate type air when the temperature is too low
Preheater 16 does not preheat coal gas and air effectively, at this time closing first outlet valve 26, opening third imported valve 30,
4th outlet valve 28,21 pairs of additional combustion furnace the second board-like gas preheaters 17 of inflow and the second plate air preheater 18 into
Row is fully warmed-up, and is reached into temperature needed for hot-blast stove 19, the first board-like gas preheater 15 and the preheating of the first plate type air
The flue gas that device 16 is discharged is directly entered chimney 27；When temperature inductor 29 sense discharge flue gas temperature it is higher, show first
Board-like gas preheater 15 and the first plate air preheater 16 achieve the effect that preheating to coal gas and air, close third at this time
Imported valve 30 selects to open first outlet valve 26, closes the 4th outlet valve 28, continues to preheating according to the height of temperature
It is recycled, or closes first outlet valve 26, opens the 4th outlet valve 28, will directly be arranged by the flue gas once to exchange heat
It puts；When temperature inductor 29 sense discharge flue gas temperature it is excessively high, need to continue recycle waste gas residual heat, close third inlet valve
Door 30 opens first outlet valve 26 and simultaneously closes off the 4th outlet valve 28, and the first board-like gas preheater 15 and first is board-like
The flue gas that air preheater 16 is discharged continues to flow into the second board-like gas preheater 17 and the second plate air preheater 18, protects
Fully absorbing for card waste gas residual heat, improves the utilization rate of heat.
Wherein, the first board-like gas preheater 15 is identical with the structure of the second board-like gas preheater 17.
Wherein, the first plate air preheater 16 is identical with the structure of the second plate air preheater 18.
Such as Fig. 2, the first plate air preheater 16 includes plate package 1, and plate package 1 is in the same direction by muti-piece heat exchange plate 2
It being laminated, the top of plate package 1 is provided with the first fixed plate 8, and bottom end is provided with the second fixed plate 9, the first fixed plate 8,
Second fixed plate 9 is connected by fastener 10.
Such as Fig. 3,4,5,6, heat exchange plate 2 includes heat exchanger plate body 3, and heat exchanger plate body 3 is square, heat exchanger plate body 3
The periphery of upper end edge surrounding be respectively arranged with fin 5, the length of fin 5 is less than the side length of heat exchanger plate body 3, heat exchanger plate body
Cylinder 4 is provided at left and right sides of 3 lower ends, 4 end of cylinder is provided with the groove 6 being used cooperatively with fin 5, the length of cylinder 4
Equal with the side length of heat exchanger plate body 3, the height of cylinder 4 is greater than the height of fin 5.The upper and lower surface of heat exchange plate 2 is set respectively
It is equipped with fins set 11, fins set 11 is arranged alternately by linear type fin and baffling type fin 12, and adjacent heat exchange plate 2 is staggered
90 °, form orthogonal runner 7.
Such as Fig. 7, baffling type fin 12 includes diversion division 13 and baffling portion 14, the angle between diversion division 13 and baffling portion 14
It is 10-90 °, preferably 10-25 °.
In use, two neighboring heat exchange plate 2 is cooperatively connected by groove 6 with fin 5, adjacent heat exchange plate 2 is completed
Preliminary limit fixed function 1 top of plate package is provided with the first fixed plate 8 and positioned at the bottom of plate package 1 in turn
The second fixed plate 9 of end setting, the first fixed plate 8, the second fixed plate 9 are connected by fastener 10, complete entire plate package 1
Fixed function is limited, makes the connection of adjacent heat exchange plate 2 simpler using aforesaid way；Flue gas, air are each led into
In the runner 7 of orthogonal setting, flue gas exchanges heat with air, so that the temperature of flue gas reduces, the temperature of air is increased, heat exchanger plates
The fins set 11 of 2 upper and lower surface of piece setting makes the good effect of heat exchange of flue gas and air, and heat transfer rate is fast.
Wherein, above-mentioned heat exchange plate 2 is stainless steel material.
Wherein, above-mentioned first fixed plate 8, the second fixed plate 9 are high temperature resistant material.
Preheating system of plate heat exchanger of hot blast furnace of the invention ensure that the preheating at least once of coal gas and combustion air, warp
Coal gas and combustion air after preheating can be rapidly reached temperature requirement in hot-blast stove, be used for blast furnace iron-making process.
The above specific embodiments are only exemplary, is to preferably make skilled artisans appreciate that originally
Patent, be not to be construed as include to this patent range limitation；As long as appointing made by the spirit according to disclosed in this patent
How with change or modification, the range that this patent includes is each fallen within.
Claims (9)
1. a kind of preheating system of plate heat exchanger of hot blast furnace, which is characterized in that including the first board-like gas preheater (15), first
Plate air preheater (16), the second board-like gas preheater (17), the second plate air preheater (18), hot-blast stove (19),
Flue (20), additional combustion furnace (21), air inlet pipe (22), air outlet duct (23), gas inlet pipe road
(24), coal gas output channel (25),
The smoke discharging end of the hot-blast stove (19) connects flue (20), and the flue (20) is separately connected in parallel the
The flue gas input terminal of one board-like gas preheater (15) and the first plate air preheater (16), the first board-like gas preheating
The flue gas output end of device (15) and the first plate air preheater (16) second plate in parallel through first outlet valve (26) connection
The flue gas input terminal of formula gas preheater (17) and the second plate air preheater (18), the second board-like gas preheater
(17) it is connected chimney (27) with the flue gas output end of the second plate air preheater (18), the chimney (27) also goes out by the 4th
Mouth valve (28) is connect with the flue gas output end of the first board-like gas preheater (15) and the first plate air preheater (16), institute
The flue gas output end for stating the first board-like gas preheater (15) and the first plate air preheater (16) is additionally provided with temperature sense
Device (29),
The gas inlet pipe road (24) connect through the first imported valve with the input terminal of the first board-like gas preheater (15), the
The output end of one board-like gas preheater (15) concatenates the input terminal of the second board-like gas preheater (17), and the second board-like coal gas is pre-
The output end of hot device (17) through second outlet valve to coal gas output channel (25),
The air inlet pipe (22) connect through the second imported valve with the input terminal of the first plate air preheater (16), the
The input terminal of the output end concatenation the second plate air preheater (18) of one plate air preheater (16), the second plate type air are pre-
The output end of hot device (18) through third outlet valve to air outlet duct (23),
Pass through the second board-like coal gas of third imported valve (30) concatenation parallel connection on the output channel of the additional combustion furnace (21)
The flue gas input terminal of preheater (17) and the second plate air preheater (18).
2. preheating system of plate heat exchanger of hot blast furnace as described in claim 1, which is characterized in that first plate type air is pre-
Hot device (16) is identical with the second plate air preheater (18) structure.
3. preheating system of plate heat exchanger of hot blast furnace as claimed in claim 2, which is characterized in that first plate type air is pre-
Hot device (16), including plate package (1), the plate package (1) is laminated in the same direction by muti-piece heat exchange plate (2), described to change
Hot plate piece (2) includes heat exchanger plate body (3), and the heat exchanger plate body (3) is square, the upper end of the heat exchanger plate body (3)
It is respectively arranged with fin (5) along the periphery of surrounding, the length of the fin (5) is less than the side length of heat exchanger plate body (3), described to change
It is provided with cylinder (4) at left and right sides of hot plate ontology (3) lower end, cylinder (4) end is provided with to be used cooperatively with fin (5)
Groove (6), the length of cylinder (4) is equal with the side length of heat exchanger plate body (3), and the height of cylinder (4) is greater than the height of fin (5)
Degree, the upper and lower surface of the heat exchange plate (2) is respectively arranged with fins set (11), the fins set (11) by linear type fin and
Baffling type fin (12) is arranged alternately, and adjacent heat exchange plate (2) is staggered 90 °, forms orthogonal runner (7), the heat exchange
The top of board group (1) is provided with the first fixed plate (8), and bottom end is provided with the second fixed plate (9), first fixed plate (8),
Two fixed plates (9) are connected by fastener (10).
4. preheating system of plate heat exchanger of hot blast furnace as claimed in claim 3, which is characterized in that the heat exchange plate (2) is
Stainless steel material.
5. preheating system of plate heat exchanger of hot blast furnace as claimed in claim 3, which is characterized in that the baffling type fin (12)
Including diversion division (13) and baffling portion (14), the angle between the diversion division (13) and baffling portion (14) is 10-90 °.
6. preheating system of plate heat exchanger of hot blast furnace as claimed in claim 5, which is characterized in that the diversion division (13) and folding
Angle between stream portion (14) is 10-25 °.
7. preheating system of plate heat exchanger of hot blast furnace as claimed in claim 3, which is characterized in that first fixed plate (8),
Second fixed plate (9) is high temperature resistant material.
8. preheating system of plate heat exchanger of hot blast furnace as described in claim 1, which is characterized in that the first board-like coal gas is pre-
Hot device (15) is identical with the structure of the second board-like gas preheater (17).
9. preheating system of plate heat exchanger of hot blast furnace as claimed in claim 8, which is characterized in that the first board-like coal gas is pre-
Hot device (15) is corrugated plate dst heat transfer element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122763.1A CN110117686B (en) | 2018-02-07 | 2018-02-07 | Preheating system of plate heat exchanger of hot blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122763.1A CN110117686B (en) | 2018-02-07 | 2018-02-07 | Preheating system of plate heat exchanger of hot blast stove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110117686A true CN110117686A (en) | 2019-08-13 |
| CN110117686B CN110117686B (en) | 2021-08-06 |
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ID=67520088
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810122763.1A Active CN110117686B (en) | 2018-02-07 | 2018-02-07 | Preheating system of plate heat exchanger of hot blast stove |
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| Country | Link |
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| CN (1) | CN110117686B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110982976A (en) * | 2020-01-06 | 2020-04-10 | 宝钢湛江钢铁有限公司 | Plate type gas-gas heat exchanger |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353125A (en) * | 2013-07-23 | 2013-10-16 | 茂名重力石化机械制造有限公司 | Baffling fin casting plate-type air pre-heater |
| CN107488771A (en) * | 2017-09-29 | 2017-12-19 | 四川德胜集团钒钛有限公司 | A kind of blast-furnace hot-air furnace system |
-
2018
- 2018-02-07 CN CN201810122763.1A patent/CN110117686B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353125A (en) * | 2013-07-23 | 2013-10-16 | 茂名重力石化机械制造有限公司 | Baffling fin casting plate-type air pre-heater |
| CN107488771A (en) * | 2017-09-29 | 2017-12-19 | 四川德胜集团钒钛有限公司 | A kind of blast-furnace hot-air furnace system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110982976A (en) * | 2020-01-06 | 2020-04-10 | 宝钢湛江钢铁有限公司 | Plate type gas-gas heat exchanger |
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| Publication number | Publication date |
|---|---|
| CN110117686B (en) | 2021-08-06 |
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