CN208604143U - A kind of dynamic regulation oxygen-enriched air blast richness CO2The control system of rate - Google Patents
A kind of dynamic regulation oxygen-enriched air blast richness CO2The control system of rate Download PDFInfo
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- CN208604143U CN208604143U CN201821089204.7U CN201821089204U CN208604143U CN 208604143 U CN208604143 U CN 208604143U CN 201821089204 U CN201821089204 U CN 201821089204U CN 208604143 U CN208604143 U CN 208604143U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The utility model belongs to blast furnace ironmaking green high-efficient production field, and in particular to a kind of dynamic regulation oxygen-enriched air blast richness CO2The control system of rate, the control system can real-time dynamic regulation oxygen-enriched air blast richness CO2Rate realizes oxygen enrichment percentage and richness CO in oxygen-enriched air blast2The optimization matching of rate controls air port ignition temperature in zone of reasonableness, and air port ignition temperature is excessively high caused by solving the problems, such as because of raising blast furnace air oxygen enrichment percentage, further increases yield for blast furnace and provides solution, also achieves CO2In the recycling application of blast furnace ironmaking process.
Description
Technical field
The utility model belongs to blast furnace ironmaking green high-efficient production field, and in particular to a kind of dynamic regulation oxygen-enriched air blast is rich
CO2The control system of rate.
Background technique
Cupola well Warm status has a major impact smooth operation of furnace and molten steel quality, in production practice of blast furnace, usually by air port
Raceway zone ignition temperature is as the important reference indicator for measuring cupola well Warm status.A large amount of production practices show to maintain blast furnace
Normal operating conditions, Tuyere Raceway ignition temperature should be stablized in reasonable interval.Tuyere Raceway ignition temperature is too low, air port
The fuel combustion of blowing is insufficient, furnace charge underheat, causes reduction of iron ore insufficient, slag iron temperature is low；Temperature is excessively high, SiO
A large amount of gasifications, coal gas rapid spatial expansion cause furnace charge decline resistance to increase, influence smooth operation of furnace, while localized hyperthermia causes
Strong heat radiation accelerate the erosion of cupola well refractory material, make safety in production hidden danger of the blast furnace there are hearth breakout.
The mode of intensification of smelting process in BF is oxygen-enriched air blast at present, i.e., industrial oxygen is added in blast-furnace hot-air, improves air blast
Oxygen enrichment percentage, enhanced fuel improve rate of driving in Tuyere Raceway burning degree, increase furnace processor, but excessively high oxygen enrichment percentage
Will lead to air port ignition temperature transfinites, and limits the further promotion of oxygen enrichment percentage, therefore how to further increase oxygen-enriched in hot wind
Rate is the main difficult technical that ironmaking worker faces.There is scholar to propose that CO is added in blast-furnace hot-air2Gas utilizes CO2Gas
With the characteristic of carbon endothermic heat of reaction in Tuyere Raceway coal dust, coke, solve hot wind in oxygen concentration it is excessively high cause air port return
Revolve the excessively high problem of area's ignition temperature.
But in State of Blast Furnace it is a high temperature and pressure multiphase system, and in actual production process, each operating parameter in State of Blast Furnace
As coke ingredient, coal dust ingredient, pig iron ingredient, the blow rate required, hot blast temperature, blast humidity fluctuate larger, and nothing with smelting process
Method real-time detection, static Tuyere Raceway theoretical temperature combustion computation model can not obtain oxygen-enriched under best air port ignition temperature
Rate and richness CO2The rational proportion of rate has seriously affected oxygen-enriched air blast and richness CO in blast furnace air2The cooperation of aeration operation.
Utility model content
To solve the above problems, the utility model proposes a kind of dynamic regulation oxygen-enriched air blast richness CO2The control system of rate.Institute
Stating control system can real-time dynamic regulation oxygen-enriched air blast richness CO2Rate realizes oxygen enrichment percentage and richness CO in oxygen-enriched air blast2The optimization of rate
Matching is solved by the control of air port ignition temperature in zone of reasonableness because of air port ignition temperature caused by improving blast furnace air oxygen enrichment percentage
Excessively high problem further increases yield for blast furnace and provides solution, also achieves CO2In the resource of blast furnace ironmaking process
Change application.
The utility model is achieved through the following technical solutions:
A kind of dynamic regulation oxygen-enriched air blast richness CO2The control system of rate, the control system include:
One adjusts and controls in real time the main control unit of the control system；
The temperature measuring unit of one real-time detection In Raceway Before Tuyere of Blast Furnace temperature；
One calculates richness CO in air blast21% richness CO of rate and every increase2The theoretical richness CO of rate air port ignition temperature decreasing value2Rate
Computing unit；
One calculates CO2The air blast parameter calculation unit of gas flow and oxygen flow；
One detection and adjusting CO2The CO of flow2Flow monitoring control unit；
One detection and the oxygen flow for adjusting oxygen flow monitor control unit；With
One detection and the hot air flowrate for adjusting hot air flowrate monitor control unit；
The main control unit respectively with the temperature measuring unit, the theoretical richness CO2Rate computing unit and the air blast parameter
Computing unit connection；
The air blast parameter calculation unit respectively with the CO2Flow monitoring control unit, oxygen flow monitoring control
Unit processed is connected with hot air flowrate monitoring control unit；
Through the CO2Flow monitoring control unit, oxygen flow monitoring control unit and hot air flowrate prison
Survey the CO that control unit is sent out2The Tuyere Raceway is sent into after gas, oxygen and hot-air mixing.
Further, Tuyere Raceway abbreviation air port.
Further, the CO2Flow monitoring control unit includes the first decompression balancing device, the adjusting of the first Electromagnetic Flow
Valve, the first mass flow sensor and first check-valve；
It is described first decompression balancing device, the first Electromagnetic Flow regulating valve, first mass flow sensor and
The first check-valve is sequentially connected, and the first decompression balancing device is arranged in the CO2Flow monitoring control unit into
Port, the first check-valve are placed in the CO2The gas outlet of flow monitoring control unit.
Further, the oxygen flow monitoring control unit includes the second decompression balancing device, the second Electromagnetic Flow tune
Save valve, the second mass flow sensor and second check-valve；
It is described second decompression balancing device, the second Electromagnetic Flow regulating valve, second mass flow sensor and
The second check-valve is sequentially connected, the second decompression balancing device be arranged in oxygen flow monitoring control unit into
Port, the second check-valve are placed in the gas outlet of oxygen flow monitoring control unit.
Further, the hot air flowrate monitoring control unit includes third decompression balancing device, third Electromagnetic Flow
Regulating valve, third mass flow sensor and third check-valves；
Third decompression balancing device, the third Electromagnetic Flow regulating valve, the third mass flow sensor and
The third check-valves is sequentially connected, and the hot air flowrate monitoring control unit is arranged in the third decompression balancing device
Air inlet, the third check-valves are placed in the gas outlet of hot air flowrate monitoring control unit.
Further, the dynamic regulation oxygen-enriched air blast richness CO2The control system of rate further includes a blasting unit, the drum
Wind unit is arranged in the CO2Flow monitoring control unit, oxygen flow monitoring control unit and the hot air flowrate
The gas outlet for monitoring control unit, for making CO2Gas, oxygen and hot-air are sent into the Tuyere Raceway after being sufficiently mixed.
Further, the blasting unit includes one for the surge tank of gas buffer and the gas of a detection gas flow
Flow sensor, the surge tank are connect with the gas flow sensor.
Further, the temperature measuring unit is Non-contacting Infrared Thermometer；The biography of the Non-contacting Infrared Thermometer
Sensor is set to blast branch pipe of blast furnace blow-through pipe end peep-hole center.
The utility model has following advantageous effects:
(1) a kind of dynamic regulation oxygen-enriched air blast richness CO of the utility model2The control system of rate, structure is simple, integrated level
Height is widely used.
(2) a kind of dynamic regulation oxygen-enriched air blast richness CO of the utility model2The control system of rate utilizes richness CO in air blast2Rate
Computation model calculates the rich CO under specific operation2Rate measures air port ignition temperature using temperature measuring unit, operates according to blast furnace process
The thinking of Iterative Optimal Control, the blast furnace air richness CO of dynamic adjustment in real time2Rate realizes oxygen enrichment percentage and richness CO in oxygen-enriched blast furnace air2
Rate optimization matching guarantees that Tuyere Raceway ignition temperature is stablized in reasonable interval while further increasing furnace processor,
Cupola well normal operating conditions is maintained, while also achieving blast furnace ironmaking process CO2Recycling application.
Detailed description of the invention
Fig. 1 is dynamic regulation oxygen-enriched air blast richness CO in the utility model embodiment 12The structural representation of the control system of rate
Figure.
Fig. 2 is that the infrared temperature probe setting position of Non-contacting Infrared Thermometer in the utility model embodiment 1 shows
It is intended to.
Fig. 3 is dynamic regulation oxygen-enriched air blast richness CO in the utility model embodiment 22It include air blast list in the control system of rate
The schematic diagram of member.
Description of symbols: 1- main control unit；2- temperature measuring unit；3- theory richness CO2Rate computing unit；4- air blast parameter meter
Calculate unit；5‐CO2Flow monitoring control unit, 51- first depressurize balancing device, 52- the first Electromagnetic Flow regulating valve, 53- the
One mass flow sensor, 54- first check-valve；6- oxygen flow monitors control unit, and 61- second depressurizes balancing device, 62-
Second Electromagnetic Flow regulating valve, the second mass flow sensor of 63-, 64- second check-valve；The monitoring control of 7- hot air flowrate
Unit, 71- third depressurize balancing device, 72- third Electromagnetic Flow regulating valve, 73- third mass flow sensor, 74- third
Check-valves；8- blasting unit, 81- surge tank, 82- gas flow sensor.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, it with reference to embodiments and says
Bright book attached drawing, is explained in further detail the utility model.It should be appreciated that specific embodiment described herein is only used
In explaining the utility model, it is not used to limit the utility model.
On the contrary, the utility model cover it is any be defined by the claims do in the spirit and scope of the utility model
Substitution, modification, equivalent method and scheme.Further, right below in order to make the public have a better understanding the utility model
It is detailed to describe some specific detail sections in the datail description of the utility model.Do not have for a person skilled in the art
The utility model can also be understood completely in the description of these detail sections.
Embodiment 1
The present embodiment proposes a kind of dynamic regulation oxygen-enriched air blast richness CO2The control system of rate, the control system include:
One adjusts and controls in real time the main control unit 1 of the control system；
The temperature measuring unit 2 of one real-time detection In Raceway Before Tuyere of Blast Furnace temperature；
One calculates richness CO in air blast21% richness CO of rate and every increase2The theoretical richness CO of rate air port ignition temperature decreasing value2Rate meter
Calculate unit 3；
One calculates CO2The air blast parameter calculation unit 4 of gas flow and oxygen flow；
One detection and adjusting CO2The CO of flow2Flow monitoring control unit 5；
One detection and the oxygen flow for adjusting oxygen flow monitor control unit 6；With
One detection and the hot air flowrate for adjusting hot air flowrate monitor control unit 7；
The main control unit 1 respectively with the temperature measuring unit 2, the theoretical richness CO2Rate computing unit 3 and air blast ginseng
Number computing unit 4 connects；
The air blast parameter calculation unit 4 respectively with the CO2Flow monitoring control unit 5, oxygen flow monitoring
Control unit 6 and hot air flowrate monitoring control unit 7 connect；
Through the CO2Flow monitoring control unit 5, oxygen flow monitoring control unit 6 and the hot air flowrate
Monitor the CO that control unit 7 is sent out2The Tuyere Raceway is sent into after gas, oxygen and hot-air mixing.
The CO2Flow monitoring control unit 5 include first decompression balancing device 51, the first Electromagnetic Flow regulating valve 52,
First mass flow sensor 53 and first check-valve 54；
The first decompression balancing device 51, the first Electromagnetic Flow regulating valve 52, first mass flow sensing
Device 53 and the first check-valve 54 are sequentially connected, and the first decompression balancing device 51 is arranged in the CO2Flow monitoring control
The air inlet of unit 5 processed, the first check-valve 54 are placed in the CO2The gas outlet of flow monitoring control unit 5.
Oxygen flow monitoring control unit 6 include the second decompression balancing device 61, the second Electromagnetic Flow regulating valve 62,
Second mass flow sensor 63 and second check-valve 64；
The second decompression balancing device 61, the second Electromagnetic Flow regulating valve 62, second mass flow sensing
Device 63 and the second check-valve 64 are sequentially connected, and the second decompression setting of balancing device 61 is monitored in the oxygen flow to be controlled
The air inlet of unit 6 processed, the second check-valve 64 are placed in the gas outlet of oxygen flow monitoring control unit 6.
The hot air flowrate monitoring control unit 7 includes that third depressurizes balancing device 71, third Electromagnetic Flow regulating valve
72, third mass flow sensor 73 and third check-valves 74；
The third decompression balancing device 71, the third Electromagnetic Flow regulating valve 72, third mass flow sensing
Device 73 and the third check-valves 74 are sequentially connected, and third decompression balancing device 71 setting is monitored in the hot air flowrate
The air inlet of control unit 7, the third check-valves 74 are placed in the gas outlet of hot air flowrate monitoring control unit 7.
The temperature measuring unit 2 selects Non-contacting Infrared Thermometer；The sensor of the Non-contacting Infrared Thermometer is set
It is placed in blowpipe blow-through pipe end peep-hole center.
A kind of dynamic regulation oxygen-enriched air blast richness CO that the present embodiment proposes2The control system of rate utilizes richness CO in air blast2Rate
Computation model calculates the rich CO under specific operation2Rate measures air port ignition temperature using temperature measuring unit 2, grasps according to blast furnace process
Make the thinking of Iterative Optimal Control, the blast furnace air richness CO of dynamic adjustment in real time2Rate realizes oxygen enrichment percentage and richness in oxygen-enriched blast furnace air
CO2Rate optimization matching guarantees that Tuyere Raceway ignition temperature is stablized in Reasonable area while further increasing furnace processor
Between, cupola well normal operating conditions is maintained, while also achieving blast furnace ironmaking process CO2Recycling application.
Embodiment 2
A kind of dynamic regulation oxygen-enriched air blast richness CO of the proposition of the present embodiment2The control system of rate and the basic phase of embodiment 1
Together, unlike only:
The dynamic regulation oxygen-enriched air blast richness CO2The control system of rate further includes a blasting unit 8, the blasting unit 8
It is arranged in the CO2Flow monitoring control unit 5, oxygen flow monitoring control unit 6 and hot air flowrate monitoring
The gas outlet of control unit 7, for making CO2Gas, oxygen and hot-air are sent into the Tuyere Raceway after being sufficiently mixed.
The blasting unit includes one for the surge tank 81 of gas buffer and the gas flow biography of a detection gas flow
Sensor 82, the surge tank 81 are connect with the gas flow sensor 82.
Claims (7)
1. a kind of dynamic regulation oxygen-enriched air blast richness CO2The control system of rate, which is characterized in that the control system includes:
One adjusts and controls in real time the main control unit of the control system；
The temperature measuring unit of one real-time detection In Raceway Before Tuyere of Blast Furnace temperature；
One calculates richness CO in air blast21% richness CO of rate and every increase2The theoretical richness CO of rate air port ignition temperature decreasing value2Rate calculates single
Member；
One calculates CO2The air blast parameter calculation unit of gas flow and oxygen flow；
One detection and adjusting CO2The CO of flow2Flow monitoring control unit；
One detection and the oxygen flow for adjusting oxygen flow monitor control unit；With
One detection and the hot air flowrate for adjusting hot air flowrate monitor control unit；
The main control unit respectively with the temperature measuring unit, the theoretical richness CO2Rate computing unit and the air blast parameter calculate single
Member connection；
The air blast parameter calculation unit respectively with the CO2Flow monitoring control unit, the oxygen flow monitor control unit
It is connected with hot air flowrate monitoring control unit；
Through the CO2Flow monitoring control unit, oxygen flow monitoring control unit and hot air flowrate monitoring control
The CO that unit is sent out2The Tuyere Raceway is sent into after gas, oxygen and hot-air mixing.
2. a kind of dynamic regulation oxygen-enriched air blast richness CO according to claim 12The control system of rate, which is characterized in that described
CO2Flow monitoring control unit includes the first decompression balancing device, the first Electromagnetic Flow regulating valve, the first mass flow sensor
And first check-valve；
The first decompression balancing device, the first Electromagnetic Flow regulating valve, first mass flow sensor and described
First check-valve is sequentially connected, and the first decompression balancing device is arranged in the CO2The air inlet of flow monitoring control unit,
The first check-valve is placed in the CO2The gas outlet of flow monitoring control unit.
3. a kind of dynamic regulation oxygen-enriched air blast richness CO according to claim 12The control system of rate, which is characterized in that described
It includes the second decompression balancing device, the second Electromagnetic Flow regulating valve, the second mass flow sensing that oxygen flow, which monitors control unit,
Device and second check-valve；
The second decompression balancing device, the second Electromagnetic Flow regulating valve, second mass flow sensor and described
Second check-valve is sequentially connected, and the air inlet of the oxygen flow monitoring control unit is arranged in the second decompression balancing device
Mouthful, the second check-valve is placed in the gas outlet of oxygen flow monitoring control unit.
4. a kind of dynamic regulation oxygen-enriched air blast richness CO according to claim 12The control system of rate, which is characterized in that described
Hot air flowrate monitoring control unit includes third decompression balancing device, third Electromagnetic Flow regulating valve, third mass flow biography
Sensor and third check-valves；
Third decompression balancing device, the third Electromagnetic Flow regulating valve, the third mass flow sensor and described
Third check-valves is sequentially connected, and the air inlet of the hot air flowrate monitoring control unit is arranged in the third decompression balancing device
Mouthful, the third check-valves is placed in the gas outlet of hot air flowrate monitoring control unit.
5. a kind of dynamic regulation oxygen-enriched air blast richness CO according to claim 12The control system of rate, which is characterized in that described
Temperature measuring unit is Non-contacting Infrared Thermometer；The sensor of the Non-contacting Infrared Thermometer is set to blast branch pipe of blast furnace
Blow-through pipe end peep-hole center.
6. described in any item a kind of dynamic regulation oxygen-enriched air blast richness CO according to claim 1~52The control system of rate, feature
It is, the dynamic regulation oxygen-enriched air blast richness CO2The control system of rate further includes a blasting unit, and the blasting unit setting exists
The CO2Flow monitoring control unit, oxygen flow monitoring control unit and the hot air flowrate monitor control unit
Gas outlet, for making CO2Gas, oxygen and hot-air are sent into the Tuyere Raceway after being sufficiently mixed.
7. a kind of dynamic regulation oxygen-enriched air blast richness CO according to claim 62The control system of rate, which is characterized in that described
Blasting unit includes one for the surge tank of gas buffer and the gas flow sensor of a detection gas flow, the surge tank
It is connect with the gas flow sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821089204.7U CN208604143U (en) | 2018-07-10 | 2018-07-10 | A kind of dynamic regulation oxygen-enriched air blast richness CO2The control system of rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821089204.7U CN208604143U (en) | 2018-07-10 | 2018-07-10 | A kind of dynamic regulation oxygen-enriched air blast richness CO2The control system of rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208604143U true CN208604143U (en) | 2019-03-15 |
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ID=65668333
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821089204.7U Active CN208604143U (en) | 2018-07-10 | 2018-07-10 | A kind of dynamic regulation oxygen-enriched air blast richness CO2The control system of rate |
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| Country | Link |
|---|---|
| CN (1) | CN208604143U (en) |
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2018
- 2018-07-10 CN CN201821089204.7U patent/CN208604143U/en active Active
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