CN116516087A - Method for increasing temperature of top gas of hydrogen-rich carbon circulating oxygen blast furnace - Google Patents
Method for increasing temperature of top gas of hydrogen-rich carbon circulating oxygen blast furnace Download PDFInfo
- Publication number
- CN116516087A CN116516087A CN202310529988.XA CN202310529988A CN116516087A CN 116516087 A CN116516087 A CN 116516087A CN 202310529988 A CN202310529988 A CN 202310529988A CN 116516087 A CN116516087 A CN 116516087A
- Authority
- CN
- China
- Prior art keywords
- gas
- compressed air
- heat storage
- cylinder
- hydrogen
- 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
- 239000007789 gas Substances 0.000 title claims abstract description 160
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 239000001301 oxygen Substances 0.000 title claims abstract description 59
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 59
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 41
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000001257 hydrogen Substances 0.000 title claims abstract description 40
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000005338 heat storage Methods 0.000 claims abstract description 40
- 238000002485 combustion reaction Methods 0.000 claims abstract description 39
- 238000005261 decarburization Methods 0.000 claims abstract description 32
- 239000011449 brick Substances 0.000 claims abstract description 20
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003546 flue gas Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 239000000779 smoke Substances 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 15
- 238000005262 decarbonization Methods 0.000 claims description 12
- 238000010926 purge Methods 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000003756 stirring Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000428 dust Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/002—Evacuating and treating of exhaust gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a method for improving the temperature of top gas of a hydrogen-rich carbon circulating oxygen blast furnace, which is characterized in that a combustion heat storage device for burning decarburization gas is arranged at a furnace throat steel brick of the throat of the hydrogen-rich carbon circulating oxygen blast furnace, a combustion cylinder of the combustion heat storage device adopts a high-speed airflow jet heating technology, decarburization gas and compressed air are mixed in the combustion cylinder according to a certain proportion, and the decarburization gas and the compressed air are ignited by an electronic spark device on the inner cylinder wall to be burnt to form a stable heat source. The mixed gas burns 85-94% in the cylinder and the rest burns completely in the heat accumulating cylinder. The hot gas of a large amount of surplus gas and flue gas is sprayed out at a high speed of 110-250 m/s, so that strong convection heat transfer is generated in the hydrogen-rich carbon circulating oxygen blast furnace, and the blending temperature of the low-temperature gas at the top 1 of the hydrogen-rich carbon circulating oxygen blast furnace is uniform due to strong stirring of a large amount of gas.
Description
Technical Field
The invention relates to a method for improving the temperature of top gas of a hydrogen-rich carbon circulating oxygen blast furnace.
Background
The hydrogen-rich carbon circulating oxygen blast furnace replaces the traditional preheated air blast with oxygen blast, and removes CO from the top gas 2 And then the recycled hydrogen-rich carbon circulating oxygen blast furnace ironmaking process is returned to be utilized. The cyclic utilization of the top gas improves the partial pressure of CO, enhances the reduction potential of the gas, strengthens the reduction of the iron-containing furnace burden and directly returnsThe original degree is reduced, the iron-making production efficiency is improved, the fuel consumption is reduced, and the carbon emission is reduced. The process reduces direct reduction and removes CO due to development of indirect reduction 2 The top gas after that has a high concentration of reducing components (CO and H 2 ) The method has the advantages that the reduction potential in the furnace is improved, indirect reduction is developed, the fuel ratio is reduced, but due to the adoption of pure oxygen blasting, the gas quantity in the furnace is reduced, and due to the fact that the heat utilization efficiency of the whole furnace body needs to be optimized in a flow field and a temperature field in the furnace under the condition of circulating gas injection, the top temperature of a hydrogen-rich carbon circulating oxygen blast furnace is often lower through production practice parameters and is lower than 70 ℃ for a long time, the too low top temperature can lead a gas rising pipe and a falling pipe to condense and adhere dust, the accident of blocking a gas pipeline is caused, in addition, water vapor of water-containing gas is solidified, dust in the gas is settled in a gravity dust collector, a dust discharging channel at the lower part of the gravity dust collector is blocked, so that gas dust is hardened at a cone section at the lower part of the gravity dust collector, and the normal production of the hydrogen-rich carbon circulating oxygen blast furnace is seriously influenced.
Disclosure of Invention
The invention aims to provide a method for improving the temperature of the top gas of a hydrogen-rich carbon circulating oxygen blast furnace, which can improve the temperature of the top gas of the hydrogen-rich carbon circulating oxygen blast furnace and ensure normal production.
The technical scheme adopted by the invention is as follows: a method for raising the temp of top gas of hydrogen-enriched carbon-circulated oxygen blast furnace features that a combustion and heat accumulating unit for burning decarbonized gas is installed to the steel brick at throat of hydrogen-enriched carbon-circulated oxygen blast furnace, and said combustion and heat accumulating unit is divided into combustion cylinder and heat accumulating cylinder, where mixed gas is burnt by 85-94% and the rest is completely burnt. Spraying a large amount of surplus gas and flue gas hot gas into a hydrogen-rich carbon circulating oxygen blast furnace at a high speed of 110-250 m/s;
the end face of the combustion cylinder device is provided with a decarburization gas burner, the top face of the combustion cylinder device is provided with a compressed air burner and an electronic spark device, the decarburization gas burner is connected with a decarburization gas pipeline of 0.5MPa and a control system, the decarburization gas control system consists of a gas quick-cutting valve, a regulating valve, a gate valve and a pressure gauge, the decarburization gas control system is matched with a nitrogen security purging system, the compressed air burner is connected with a compressed air pipeline of 0.6MPa and the control system, the compressed air pipeline and the control system consist of a compressed air quick-cutting valve, a regulating valve, a gate valve and a pressure gauge, and the compressed air pipeline and the control system are matched with a nitrogen security purging system; the control of the above systems is connected with the digital control system through cables;
the heat storage cylinder is cylindrical, the front end surface of the heat storage cylinder is provided with a combustion cylinder, the upper cylinder side is provided with a gas oxygen content detection device and an excess gas smoke temperature detection device, a circular ring refractory brick wall is built inside the heat storage cylinder, a honeycomb refractory heat storage masonry which is less short than the axial dimension of the brick wall is arranged inside the brick wall, and the excess gas smoke heats the brick wall and an internal empty heat storage masonry which penetrates through the honeycomb refractory;
the decarbonization gas contains more than 65% of CO, the decarbonization gas burner and the compressed air burner are mixed and combusted in a combustion cylinder at high speed to generate 1200 ℃ excess gas smoke, the flow of decarbonization gas and the control of compressed air are established by a digital computer by 1.15 times of excess gas coefficient, and the opening of a compressed air pipeline and a regulating valve on a decarbonization gas control system are automatically regulated to finish the process; the decarburization gas is used in an amount ranging from 900 to 1100Nm 3 The pressure is controlled at 0.5Mpa, and the usage amount of compressed air is 1400-1600Nm 3 Pressure is controlled at 0.6Mpa, and flow rate of top gas of hydrogen-rich carbon circulating oxygen blast furnace is 80000Nm 3 And/h, maintaining the pressure at 0.16-0.18 Mpa; the gas oxygen content detection device is arranged on the upper cylinder side of the heat storage cylinder to detect the oxygen content of the excessive gas smoke in real time, the oxygen content is controlled below 0.8%, the excessive gas smoke temperature detection device is arranged on the upper cylinder side of the heat storage cylinder, and the temperature of the excessive gas smoke is controlled at 1200 ℃.
According to the heat storage barrel, the brick wall and the honeycomb refractory heat storage masonry, the heat of the excessive gas smoke is utilized, wherein brick holes in the honeycomb refractory heat storage masonry can pass through the high-temperature smoke and store a certain amount of heat. The invention mainly provides high-temperature flue gas or excessive high-temperature flue gas by adopting a furnace top combustion part to decarbonize gas, and a method for heating the furnace top gas is adopted, so that the furnace top gas can rise from 70 ℃ to 90-95 ℃ to ensure that water in the gas is not separated out, and the gas is in a gaseous state, and enters a double-text scrubber along with the gas through a gas rising pipe, a falling pipe and a gravity dust remover, and crystal water is not formed before the double-text scrubber.
The key core technology of the invention is that a combustion heat storage device for burning decarburized gas is arranged at the furnace throat steel brick of the throat of the hydrogen-rich carbon circulating oxygen blast furnace, the combustion heat storage device is utilized to generate high-temperature surplus gas smoke, the temperature is controlled to be about 1200 ℃, the high-temperature surplus gas smoke is mixed with 70 ℃ low-temperature gas at the furnace top, and the low-temperature gas at the furnace top is heated to be more than 90 ℃. The combustion heat storage device is divided into a combustion cylinder and a heat storage cylinder. The combustion cylinder of the combustion heat storage device adopts a high-speed airflow jet heating technology, a high-speed burner is arranged, decarburized coal gas and compressed air are mixed in the combustion cylinder in a certain proportion, and the decarburized coal gas and the compressed air are ignited by an electronic spark device on the inner cylinder wall to be combusted, so that a stable heat source is formed. The mixed gas burns 85-94% in the cylinder and the rest burns completely in the heat accumulating cylinder. The hot gas of a large amount of surplus gas and flue gas is sprayed out at a high speed of 110-250 m/s, so that strong convection heat transfer is generated in the hydrogen-rich carbon circulating oxygen blast furnace, and the blending temperature of the low-temperature gas at the top of the hydrogen-rich carbon circulating oxygen blast furnace is uniform due to strong stirring of a large amount of gas.
Compared with the prior art, the technical scheme provided by the invention has the beneficial effects that: the top gas of the hydrogen-rich carbon circulating oxygen blast furnace can be raised to 90-95 ℃ from 70 ℃ so that water in the gas is not separated out and is in a gaseous state, and the gas passes through a gas ascending pipe, a descending pipe and a gravity dust remover to enter a double-text scrubber along with the gas, so that crystal water is not formed before the double-text scrubber. The gas oxygen content detection device is arranged on the upper cylinder side of the cylinder device to detect the oxygen content of the excessive gas smoke in real time, and the decarbonized gas is controlled below 0.8%, so that the gas safety is ensured. The decarburization gas control system and the compressed air control system are matched with the nitrogen security purging system and the quick-cut valve, so that the connection between the system and the hydrogen-rich carbon circulating oxygen blast furnace can be quickly cut off when the machine is jumped and the wind is restored in an emergency, and the safety production is ensured. The brick wall of the heat storage barrel device and the honeycomb refractory heat storage masonry store a certain amount of ground heat, and can be used as a safe ignition source for re-ignition after fire extinguishment of the burner. In order to safely control the oxygen content, the flue gas is in a reducing atmosphere by adopting excessive gas combustion, so that the safety requirement that the oxygen content in the gas is less than 0.8% is met.
Drawings
FIG. 1 is a schematic diagram of the connection structure of the present invention;
fig. 2 is a side cross-sectional view of the interior void thermal storage masonry of fig. 1.
Description of the embodiments
As shown in figures 1 and 2, a combustion heat storage device for burning decarburization gas is arranged at a furnace throat steel brick of a furnace throat of the hydrogen-rich carbon circulating oxygen blast furnace, the combustion heat storage device is divided into a combustion cylinder 2 and a heat storage cylinder 3, the combustion cylinder 2 of the combustion heat storage device adopts a high-speed air flow jet heating technology and is provided with a high-speed burner, decarburization gas and compressed air flow and are mixed in the combustion cylinder 2 according to a certain proportion, and the decarburization gas and the compressed air are ignited by an electronic spark device 6 on the inner cylinder wall to burn to form a stable heat source. The mixed gas burns 85-94% in the cylinder, and the rest burns completely in the heat accumulating cylinder 3. The hot gas of a large amount of surplus gas and flue gas is sprayed out at a high speed of 110-250 m/s, so that strong convection heat transfer is generated in the hydrogen-rich carbon circulating oxygen blast furnace, and the mixing temperature of the low-temperature gas at the top 1 of the hydrogen-rich carbon circulating oxygen blast furnace is uniform due to strong stirring of a large amount of gas;
the end face of the combustion cylinder device 2 is provided with a decarburization gas burner 4, the top face of the combustion cylinder device is provided with a compressed air burner 5 and an electronic spark device 6, the decarburization gas burner 4 is connected with a decarburization gas pipeline of 0.5MPa and a control system 7, the decarburization gas control system 7 is formed by connecting and installing a gas quick-cutting valve, a regulating valve, a gate valve and a pressure gauge, the decarburization gas control system 7 is matched with a nitrogen security purging system 10 at the same time, the compressed air burner 5 is connected and installed with a compressed air pipeline of 0.6MPa and a control system 8, the compressed air pipeline and the control system 8 is formed by connecting and installing a compressed air quick-cutting valve, a regulating valve, a gate valve and a pressure gauge, and the compressed air pipeline and the control system 8 are matched with a nitrogen security purging system 11 at the same time; the control of the above systems is connected with a digital control system 9 through cables;
the heat storage cylinder 3 is cylindrical, the front end face of the heat storage cylinder is provided with a combustion cylinder 2, the upper cylinder side is provided with a gas oxygen content detection device 12 and an excess gas smoke temperature detection device 13, a circular ring refractory brick wall 14 is built inside the heat storage cylinder, a honeycomb refractory heat storage masonry 15 which is less short than the axial dimension of the brick wall 14 is arranged inside the brick wall 14, and the excess gas smoke heats the brick wall 14 and an internal empty heat storage masonry 15 which penetrates through the honeycomb refractory;
the decarbonization gas contains more than 65% of CO, the decarbonization gas burner 4 and the compressed air burner 5 are mixed and combusted in a combustion cylinder 2 at high speed to generate 1200 ℃ excess gas smoke, the flow of the decarbonization gas and the control of the compressed air are established by a digital computer by 1.15 times of excess gas coefficient, and the opening of a compressed air pipeline and a regulating valve on a decarbonization gas control system are automatically regulated to finish the process; the decarburization gas is used in an amount ranging from 900 to 1100Nm 3 The pressure is controlled at 0.5Mpa, and the usage amount of compressed air is 1400-1600Nm 3 The pressure is controlled at 0.6Mpa, and the flow rate of the top 1 gas of the hydrogen-rich carbon circulating oxygen blast furnace is 80000Nm 3 And/h, maintaining the pressure at 0.16-0.18 Mpa; the gas oxygen content detection device 12 is arranged on the upper cylinder side of the heat storage cylinder 3 to detect the oxygen content of the excessive gas smoke in real time, the oxygen content is controlled below 0.8%, the excessive gas smoke temperature detection device 13 is arranged on the upper cylinder side of the heat storage cylinder 3, and the temperature of the excessive gas smoke is controlled at 1200 ℃.
The hot gas of a large amount of surplus gas and flue gas is sprayed out at a high speed of 110-250 m/s, so that strong convection heat transfer is generated in the top space of the hydrogen-rich carbon circulating oxygen blast furnace, and the mixing temperature of the low-temperature gas at the top 1 of the hydrogen-rich carbon circulating oxygen blast furnace is uniform due to strong stirring of a large amount of gas, and the top temperature of 70 ℃ is increased to 90-95 ℃.
Examples
And (3) re-wind production of the hydrogen-rich carbon circulating oxygen blast furnace: before closing the furnace top ignition manhole, opening a regulating valve of the compressed air burner 5 and starting an electronic spark device 6 for ignition, then opening a regulating valve of the decarburization gas burner 4, and performing stable combustion by small fire, wherein the compressed air flow is controlled to be 50 Nm 3 And/h, controlling the flow of decarbonized gas at40 Nm 3 And/h, preparing to open the air to close an ignition manhole at the top of the furnace, and after the air is opened, recovering the production stage of the hydrogen-rich carbon circulating oxygen blast furnace, wherein the low-load (a large amount of fuel coke) damping down material input by the hydrogen-rich carbon circulating oxygen blast furnace reacts, the gas quantity at the top of the furnace is sufficient, the temperature at the top of the furnace exceeds 90 ℃, the gas utilization efficiency is improved along with the adjustment of the furnace condition after the furnace is opened, the temperature at the top of the furnace has a descending trend, and the flow of decarburized gas needs to be adjusted by entering the compressed air flowmeter in the embodiment 2.
Examples
Normal production of hydrogen-rich carbon circulating oxygen blast furnace: the flow rate of the top gas of the hydrogen-rich carbon circulating oxygen blast furnace is 80000m3/h, the temperature of the top is lower than 70 ℃, the control of the decarburization gas flow rate and the compressed air establishes an excess gas coefficient which is 1.15 times through a digital computer, meanwhile, an excess gas flue gas temperature detection device 13 is set, the excess gas flue gas temperature detection device is controlled at 1200 ℃, the integrated control of the flow rate and the temperature of the top gas of the hydrogen-rich carbon circulating oxygen blast furnace is combined, at the moment, the opening of a compressed air pipeline and the opening of a regulating valve on a decarburization gas control system are automatically regulated through a computer, and the using amount range of the decarburization gas is regulated to 900-1100Nm 3 And/h, the use amount of the compressed air is adjusted to 1400-1600Nm 3 In the range of the ratio/h, the top gas of the hydrogen-rich carbon circulating oxygen blast furnace is heated to 90 ℃. When the oxygen content of the gas fume exceeds 0.8%, the oxygen content of the gas fume can be properly increased by 10-30 Nm 3 And/h decarburization gas quantity.
Examples
Stopping production by damping down the hydrogen-rich carbon circulating oxygen blast furnace: before stopping production, the quick-cut valve of the compressed air burner 5 and the quick-cut valve of the decarburization gas burner 4 are closed, and simultaneously, the decarburization gas control system and the compressed air control system are opened to be simultaneously matched with the nitrogen security purging systems 10 and 11 to purge for 2 minutes, and then the purging valves are closed.
Claims (1)
1. A method for increasing the temperature of the top gas of a hydrogen-rich carbon circulating oxygen blast furnace is characterized in that a combustion heat storage device for burning decarburized gas is arranged at the position of a furnace throat steel brick of the throat of the hydrogen-rich carbon circulating oxygen blast furnace, the combustion heat storage device is divided into a combustion cylinder and a heat storage cylinder, the mixed gas is burnt in 85-94% in the combustion cylinder, and the rest is completely burnt in the heat storage cylinder. Spraying a large amount of surplus gas and flue gas hot gas into a hydrogen-rich carbon circulating oxygen blast furnace at a high speed of 110-250 m/s;
the end face of the combustion cylinder device is provided with a decarburization gas burner, the top face of the combustion cylinder device is provided with a compressed air burner and an electronic spark device, the decarburization gas burner is connected with a decarburization gas pipeline of 0.5MPa and a control system, the decarburization gas control system consists of a gas quick-cutting valve, a regulating valve, a gate valve and a pressure gauge, the decarburization gas control system is matched with a nitrogen security purging system, the compressed air burner is connected with a compressed air pipeline of 0.6MPa and the control system, the compressed air pipeline and the control system consist of a compressed air quick-cutting valve, a regulating valve, a gate valve and a pressure gauge, and the compressed air pipeline and the control system are matched with a nitrogen security purging system; the control of the above systems is connected with the digital control system through cables;
the heat storage cylinder is cylindrical, the front end surface of the heat storage cylinder is provided with a combustion cylinder, the upper cylinder side is provided with a gas oxygen content detection device and an excess gas smoke temperature detection device, a circular ring refractory brick wall is built inside the heat storage cylinder, a honeycomb refractory heat storage masonry which is less short than the axial dimension of the brick wall is arranged inside the brick wall, and the excess gas smoke heats the brick wall and an internal empty heat storage masonry which penetrates through the honeycomb refractory;
the decarbonization gas contains more than 65% of CO, the decarbonization gas burner and the compressed air burner are mixed and combusted in a combustion cylinder at high speed to generate 1200 ℃ excess gas smoke, the flow of decarbonization gas and the control of compressed air are established by a digital computer by 1.15 times of excess gas coefficient, and the opening of a compressed air pipeline and a regulating valve on a decarbonization gas control system are automatically regulated to finish the process; the decarburization gas is used in an amount ranging from 900 to 1100Nm 3 The pressure is controlled at 0.5Mpa, and the usage amount of compressed air is 1400-1600Nm 3 Pressure is controlled at 0.6Mpa, and flow rate of top gas of hydrogen-rich carbon circulating oxygen blast furnace is 80000Nm 3 And/h, maintaining the pressure at 0.16-0.18 Mpa; a gas oxygen content detection device is arranged on the upper cylinder side of the heat storage cylinder to detect the oxygen content of the excessive gas smoke in real time, and the oxygen content is controlled below 0.8 percent, and the gas is storedThe upper cylinder side of the hot cylinder is provided with an excess gas flue gas temperature detection device, and the excess gas flue gas temperature is detected in real time and controlled at 1200 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310529988.XA CN116516087A (en) | 2023-05-11 | 2023-05-11 | Method for increasing temperature of top gas of hydrogen-rich carbon circulating oxygen blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310529988.XA CN116516087A (en) | 2023-05-11 | 2023-05-11 | Method for increasing temperature of top gas of hydrogen-rich carbon circulating oxygen blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116516087A true CN116516087A (en) | 2023-08-01 |
Family
ID=87404492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310529988.XA Pending CN116516087A (en) | 2023-05-11 | 2023-05-11 | Method for increasing temperature of top gas of hydrogen-rich carbon circulating oxygen blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116516087A (en) |
-
2023
- 2023-05-11 CN CN202310529988.XA patent/CN116516087A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114317853B (en) | Based on 2500m 3 Heating method for high-temperature gas by carbon-carbon circulation blowing of blast furnace gas | |
| KR20170048370A (en) | Improved burn profiles for coke operation | |
| JP6256710B2 (en) | Oxygen blast furnace operation method | |
| JP5522325B1 (en) | Blast furnace operation method | |
| JP7297091B2 (en) | Blast furnace operation method | |
| EP0793071A2 (en) | Furnace waste gas combustion control | |
| JPH05179323A (en) | Operating method for blast furnace | |
| CN116516087A (en) | Method for increasing temperature of top gas of hydrogen-rich carbon circulating oxygen blast furnace | |
| CN101871026A (en) | Method for injecting carbon dioxide into blast furnace | |
| CN215103367U (en) | Gas CO of smelting reduction furnace2Carbon neutralization device | |
| CN113088608A (en) | Gas CO of smelting reduction furnace2Method and apparatus for carbon neutralization | |
| CN101693936A (en) | Explosion suppression device of combustible gas for flues | |
| CN201512551U (en) | Combustible gas explosion-suppressing device for flue | |
| US9004910B2 (en) | Method for combustion of a low-grade fuel | |
| CN116536473B (en) | Explosion-proof efficiency improving method and explosion-proof efficiency improving system for converter flue | |
| CN219772158U (en) | Hot air furnace system using pure blast furnace gas | |
| CN103740873A (en) | Blast furnace ironmaking system | |
| CN116855669A (en) | Steelmaking method and system for improving flue safety and gas calorific value | |
| CN217031214U (en) | Tail gas treatment and incineration device for silver-process formaldehyde | |
| LU102438B1 (en) | Method for operating a blast furnace plant | |
| KR102161597B1 (en) | Method and apparatus for manufacturing molten iron | |
| KR100431864B1 (en) | Method For Manufacturing Molten Iron By COREX Process | |
| CN115111599A (en) | Control method for ultralow NOx emission in ignition and blowing-in process of circulating fluidized bed boiler | |
| CN117327848A (en) | Method for treating suspended materials in hydrogen-rich carbon circulating oxygen blast furnace | |
| JPH04354810A (en) | Method for blowing fine coal into blast furnace and device therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |