CN208883923U - A kind of automatic protective system avoiding blast-furnace tuyere pour slag - Google Patents
A kind of automatic protective system avoiding blast-furnace tuyere pour slag Download PDFInfo
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- CN208883923U CN208883923U CN201821608992.6U CN201821608992U CN208883923U CN 208883923 U CN208883923 U CN 208883923U CN 201821608992 U CN201821608992 U CN 201821608992U CN 208883923 U CN208883923 U CN 208883923U
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Abstract
The utility model discloses a kind of automatic protective systems for avoiding blast-furnace tuyere pour slag; including blast furnace; the air feed system of blast furnace is connected with by hot air pipe; the lower part of the blast furnace is provided around several hot wind nozzles; air outlet one end of each hot wind nozzle is protruded into inside blast furnace; the other end is separately connected averaging wind pipe, and the averaging wind pipe connects air feed system by hot air pipe.The utility model is compact-sized, simply, simplify warm-air supply system, each hot-blast stove connects each other again independently of one another, can independent air feed also can mutually blow, realization is not changing former smelting process, in the case where the continuity and integrality that ensure that former smelting process, can the air-supply situation in real time to hot-blast stove be monitored, when there is accident in hot-blast stove, it can automatically switch air-supply, fully achieve continuous production, increase the reliability of operation of blast furnace, stability and continuity, greatly reduce operation of blast furnace and to wind operating cost, it reduces and shuts down the processing time, and maintenance cost.
Description
Technical field
The utility model belongs to technical field of blast furnace process, and in particular to a kind of automatic protection for avoiding blast-furnace tuyere pour slag
System.
Background technique
Blast-furnace hot-air is supplied with used in blast-furnace roasting.Under the influence of operation of blast furnace requires and burning time changes, blast furnace
The raising of hot-blast pressure and furnace top pressure makes blast furnace and hot-blast stove be equal to " pressure vessel "；On the one hand, greatly how far hot-blast stove
From blast furnace, hot air duct is too long, old hot-blast stove in structure there is the major hidden danger of " aging ", and the behaviour of hot-blast stove
" lucky " psychology is commonly present when making white collar worker also, operator's technical level is bad in addition, when and there is changing wrong furnace and break wind thing
Therefore burner explosion accident, blast furnace slagging accident and cold air duct explosion accident, cause property and equipment heavy losses；It is another
Aspect, since hot-blast stove load is larger, the starting time is longer, if blast furnace is without warm-air supply at this time, blast furnace will cooling slagging,
To influence blast furnace safety operation；Finally, the currently used air feed of steelmaking furnace is unit air feed system, i.e. separate unit hot-blast stove is straight
It connects and air feed is carried out to separate unit blast furnace, the fortune one of hot-blast stove one is standby, and operating cost is high, when the thing that trips or damage occurs in the hot-blast stove of operation
Therefore need to start immediately existing spare wind furnace to blast furnace carry out air feed when, starting the time it is slow, and whole process need worker monitor in real time pipe
Reason will cause blast furnace temperature decline in the process, slagging accident occurs and even result in blast furnace stopping, be unfavorable for safety, it is continuous,
The progress of steady production.
Utility model content
It can guarantee blast furnace safety, continuous, steady production the purpose of this utility model is to provide a kind of, avoid blast furnace wind
The automatic protective system of mouth Slagging.
Purpose of the utility model is realized as follows: including blast furnace, the air feed system of blast furnace is connected with by hot air pipe,
The lower part of the blast furnace is provided around several hot wind nozzles, and air outlet one end of each hot wind nozzle is protruded into inside blast furnace, the other end
It is separately connected averaging wind pipe, the averaging wind pipe connects air feed system by hot air pipe；Wherein, the air feed system includes main hot wind
Furnace, preheater, mainstream measuring device, main control valve and spare wind furnace, there are three port, one of port is logical for the preheater setting
The exhaust pipe that recovery tube connects each blast furnace is crossed, second port connects main hot-blast stove, and third port connects flue gas purification device, institute
Stating main hot-blast stove has several, and the air inlet of each main hot-blast stove is separately connected the second port of preheater, each main hot-blast stove
Air outlet connection is connected respectively a blast furnace by hot air pipe, on the hot air pipe between each main hot-blast stove and blast furnace
It is disposed with mainstream measuring device, main control valve, the spare wind furnace connects hot air pipe, each hot air pipe by spare air hose
Between connect.
Compared with prior art, the utility model has following technical effect that
1, the utility model is the hot-blast stove serial or parallel connection between each blast furnace, and be arranged in connecting tube detector and
Automatic transfer switch, can the air-supply situation in real time to hot-blast stove be monitored, when finding the damage of one of them or several hot-blast stoves
When not blowing, automatic transfer switch automatically switches to open, and damages hot wind to connection by an other hot-blast stove being currently running
The blast furnace of furnace supplies a part of air quantity, prevent blast furnace because caused by no hot wind blast furnace temperature decline, there is slagging accident and even result in
The production problem of blast furnace stopping, to reach blast furnace not slagging, not blowing out continues to run the purpose of production, when reducing shutdown processing
Between and maintenance cost；
2, the utility model is compact-sized, simple, simplifies warm-air supply system, between each hot-blast stove independently of one another again
It connects each other, when wherein the need maintenance or failure of a hot-blast stove, another hot-blast stove is realized to calm blast furnace air-supply, real
Do not change former smelting process now, in the case where the continuity and integrality that ensure that former smelting process, increases operation of blast furnace
Reliability, stability and continuity, when there is accident in hot-blast stove, can automatically switch air-supply, hot-blast stove can be sent in real time
Landscape condition is monitored, and fully achieves continuous production, and promotes automatic management control, greatly reduce operation of blast furnace and to
Wind operating cost is effectively saved the smelting operating cost of blast furnace.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the operation logic figure of the utility model；
Figure label: 1 ~ blast furnace, 2 ~ hot wind nozzle, 3 ~ averaging wind pipe, 4 ~ hot air pipe, 5 ~ exhaust pipe, 6 ~ flue gas purification device, 7 ~
Main hot-blast stove, 8 ~ preheater, 9 ~ mainstream measuring device, 10 ~ main control valve, 11 ~ spare wind furnace, 12 ~ spare air hose, 13 ~ auxiliary air hose,
14 ~ aux. control valve, 15 ~ thermal detector.
Specific embodiment
The utility model will be further described below with reference to the accompanying drawings, but is not subject in any way to the utility model
Limitation is transformed or replaced based on any made by the utility model introduction, belongs to the protection scope of the utility model.
The automatic protective system of blast-furnace tuyere pour slag, including blast furnace 1 are avoided as shown in attached drawing 1 ~ 2, and pass through hot air pipe 4
The air feed system of blast furnace 1 is connected, the lower part of the blast furnace 1 is provided around several hot wind nozzles 2, the air outlet of each hot wind nozzle 2
One end is protruded into inside blast furnace 1, and the other end is separately connected averaging wind pipe 3, and the averaging wind pipe 3 connects air feed system by hot air pipe 4；Its
In, the air feed system includes main hot-blast stove 7, preheater 8, mainstream measuring device 9, main control valve 10 and spare wind furnace 11, described pre-
There are three port, one of port connects the exhaust pipe 5 of each blast furnace 1, second port connection by recovery tube for the hot setting of device 8
Main hot-blast stove 7, third port connect flue gas purification device 6, and the main hot-blast stove 7 has several, the air inlet of each main hot-blast stove 7
It is separately connected the second port of preheater 8, the air outlet connection of each main hot-blast stove 7 is connected respectively one by hot air pipe 4
Blast furnace 1 is disposed with mainstream measuring device 9, main control valve on the hot air pipe 4 between each main hot-blast stove 7 and blast furnace 1
10, the spare wind furnace 11 connects hot air pipe 4 by spare air hose 12, connects between each hot air pipe 4.
The hot wind nozzle 2 at least there are two, be each provided at the lower part of blast furnace 1.
The averaging wind pipe 3 is circlewise or semicircular structure.
The preheater 8 is shell-and-tube heat exchanger or dividing wall type heat exchanger.
Thermal detector 15 is provided on each hot air pipe 4, and thermal detector 15 is set to mainstream measuring device 9 and main control valve 10
Between hot air pipe 4 on.
Auxiliary connection, Ge Gefu are respectively arranged on hot air pipe 4 between each main control valve 10 and blast furnace 1
It helps between connector through auxiliary 13 serial or parallel connection of air hose.
Aux. control valve 14 is provided on the auxiliary air hose 13, and aux. control valve 14 is automatic regulating valve.
The main control valve 10 is automatic regulating valve.
The inner wall and/or outer wall of the averaging wind pipe 3, hot air pipe 4 are provided with insulating layer and antioxidation coating.
The inner wall and/or outer wall of the auxiliary air hose 13 are provided with insulating layer and antioxidation coating.
Utility model works principle and the course of work: at work, exhaust pipe 5 is the high temperature cigarette being discharged in each blast furnace
Gas is delivered to preheater 8, preheats to the wind for needing to be delivered to each main hot-blast stove 7 and spare wind furnace 11 in preheater 8,
Preheated wind is then delivered to each main hot-blast stove 7 and spare wind furnace 11, and flue gas is then delivered to flue gas purification device 6 and is purified
Processing；Each main hot-blast stove 7 then after the further heat temperature raising of wind of preheated processing respectively to the blast furnace 1 for connection of being corresponding to it
Sustainable supply hot wind, and spare wind furnace 11 is shut down, and is assisted the aux. control valve 14 on air hose 13 to close and is conveyed without hot wind.
When one of them main hot-blast stove 7 occurs tripping or damage accident, can not continue to hold to the blast furnace 1 for connection of being corresponding to it
Continuous supply hot wind, when the blast furnace 1 being caused to become accident blast furnace 1, the mainstream measuring device 9 connecting with the main hot-blast stove 7 of the damage is detected
For air quantity lower than warning setting value or when being zero, control device controls spare wind furnace 11 starting supply hot wind automatically, while helping air hose
On aux. control valve 14 automatically open, the hot wind supplied to another main hot-blast stove 7 shunts, and a part of hot wind is guided to mix
The hot wind that spare wind furnace 11 supplies is delivered to accident blast furnace 1 jointly, guarantees that accident blast furnace 1 has warm-air supply, avoids accident
There is slagging accident in the decline of 1 furnace temperature of blast furnace, makes worker while maintenance damages main hot-blast stove 7, accident blast furnace 1 can continue to run
It smelts, avoids and need to stop the case where accident blast furnace 1 is run because repairing main hot-blast stove 7.
It is completed when the main hot-blast stove 7 of damage repairs, when can continue to run, master that the main hot-blast stove 7 good with the maintenance is connect
Flow measuring unit 9 detect air quantity be higher than warning setting value or it is normal when, control device control spare wind furnace 11, aux. control valve 14 from
It is dynamic to close, stop supply hot wind, the hot wind no longer supplied to another main hot-blast stove 7 shunts, but has the main heat repaired
Wind furnace 7 continues to supply hot wind, reduces operating cost, guarantees that blast furnace 1 can not be shut down and steady and continuous is run.
Claims (10)
1. a kind of automatic protective system for avoiding blast-furnace tuyere pour slag, including blast furnace (1), and blast furnace is connected by hot air pipe (4)
(1) air feed system, it is characterised in that: the lower part of the blast furnace (1) is provided around several hot wind nozzles (2), each hot wind nozzle
(2) blast furnace (1) inside is protruded into air outlet one end, and the other end is separately connected averaging wind pipe (3), and the averaging wind pipe (3) passes through hot wind
It manages (4) and connects air feed system；Wherein, the air feed system includes main hot-blast stove (7), preheater (8), mainstream measuring device (9), master control
Valve (10) processed and spare wind furnace (11), there are three port, one of port is connected by recovery tube for preheater (8) setting
The exhaust pipe (5) of each blast furnace (1), second port connect main hot-blast stove (7), and third port connects flue gas purification device (6), institute
Stating main hot-blast stove (7) has several, and the air inlet of each main hot-blast stove (7) is separately connected the second port of preheater (8), Ge Gezhu
The air outlet connection of hot-blast stove (7) is connected respectively a blast furnace (1) by hot air pipe (4), in each main hot-blast stove (7)
Mainstream measuring device (9), main control valve (10), the spare wind furnace (11) are disposed on hot air pipe (4) between blast furnace (1)
Hot air pipe (4) are connected by spare air hose (12), are connected between each hot air pipe (4).
2. the automatic protective system according to claim 1 for avoiding blast-furnace tuyere pour slag, it is characterised in that: the hot wind
Nozzle (2) at least there are two, be each provided at the lower part of blast furnace (1).
3. the automatic protective system according to claim 1 for avoiding blast-furnace tuyere pour slag, it is characterised in that: the equal wind
Manage (3) circlewise or semicircular structure.
4. the automatic protective system according to claim 1 for avoiding blast-furnace tuyere pour slag, it is characterised in that: the preheating
Device (8) is shell-and-tube heat exchanger or dividing wall type heat exchanger.
5. the automatic protective system according to claim 1 for avoiding blast-furnace tuyere pour slag, it is characterised in that: each heat
It is provided on air hose (4) thermal detector (15), and thermal detector (15) is set to the heat between mainstream measuring device (9) and main control valve (10)
On air hose (4).
6. the automatic protective system according to claim 1 for avoiding blast-furnace tuyere pour slag, it is characterised in that: described in each
Auxiliary connection is respectively arranged on hot air pipe (4) between main control valve (10) and blast furnace (1), between each auxiliary connection
By assisting air hose (13) serial or parallel connection.
7. the automatic protective system according to claim 6 for avoiding blast-furnace tuyere pour slag, it is characterised in that: the auxiliary
It is provided on air hose (13) aux. control valve (14), and aux. control valve (14) is automatic regulating valve.
8. the automatic protective system according to claim 1 for avoiding blast-furnace tuyere pour slag, it is characterised in that: the master control
Valve (10) processed is automatic regulating valve.
9. the automatic protective system according to claim 1 for avoiding blast-furnace tuyere pour slag, it is characterised in that: the equal wind
Pipe (3), the inner wall of hot air pipe (4) and/or outer wall are provided with insulating layer and antioxidation coating.
10. the automatic protective system according to claim 6 for avoiding blast-furnace tuyere pour slag, it is characterised in that: described is auxiliary
The inner wall and/or outer wall for helping air hose (13) are provided with insulating layer and antioxidation coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821608992.6U CN208883923U (en) | 2018-09-30 | 2018-09-30 | A kind of automatic protective system avoiding blast-furnace tuyere pour slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821608992.6U CN208883923U (en) | 2018-09-30 | 2018-09-30 | A kind of automatic protective system avoiding blast-furnace tuyere pour slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208883923U true CN208883923U (en) | 2019-05-21 |
Family
ID=66514852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821608992.6U Active CN208883923U (en) | 2018-09-30 | 2018-09-30 | A kind of automatic protective system avoiding blast-furnace tuyere pour slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208883923U (en) |
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2018
- 2018-09-30 CN CN201821608992.6U patent/CN208883923U/en active Active
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