CN106222343B - Oxygen enrichment system and method for blast furnace blower - Google Patents
Oxygen enrichment system and method for blast furnace blower Download PDFInfo
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- CN106222343B CN106222343B CN201610748250.2A CN201610748250A CN106222343B CN 106222343 B CN106222343 B CN 106222343B CN 201610748250 A CN201610748250 A CN 201610748250A CN 106222343 B CN106222343 B CN 106222343B
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- oxygen
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- generator
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- 239000001301 oxygen Substances 0.000 title claims abstract description 205
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 205
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 202
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001179 sorption measurement Methods 0.000 claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 238000003723 Smelting Methods 0.000 abstract description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 4
- 229910001882 dioxygen Inorganic materials 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002640 oxygen therapy Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Blast Furnaces (AREA)
Abstract
The invention discloses an oxygen enrichment system and method for a blast furnace blower, and belongs to the technical field of smelting. The blast furnace blower oxygen enrichment system includes: a pressure swing adsorption oxygen generator; one end of the blower is communicated with the pressure swing adsorption oxygen generator; one end of the first oxygen enrichment device is communicated with the other end of the blower; a low-temperature rectification oxygen generator; one end of the second oxygen enrichment device is communicated with the cryogenic rectification oxygen generator; one end of the communicating pipeline is communicated with the blast furnace, and the other end is communicated with the other ends of the first oxygen enrichment device and the second oxygen enrichment device. The oxygen enrichment system and the method of the blast furnace blower can reduce the equipment capacity of the oxygen enrichment device, reduce the investment cost of the equipment and ensure the stable supply of the blast furnace oxygen enrichment.
Description
Technical field
The present invention relates to technical field of smelting, more particularly to a kind of blast furnace blower oxygen enrichment system and method
Background technology
In order to improve blast-melted yield, the production cost of blast furnace is reduced, large blast furnace in the world all uses mostly
The technology of oxygen-rich smelting.Oxygen-rich smelting refers to：It is sent into blast furnace and participates in the compressed air smelted (also referred to as：Wind) in oxygen content
More than 21% (oxygen content in nature in air is about 21%), such blast furnace process is referred to as oxygen-rich smelting.Blast furnace
Oxygen-enriched air blast is that industrial oxygen (general oxygen-containing 85%-99.5%) is added into blast furnace air, be air blast it is oxygen-containing be more than atmospheric level,
The purpose is to improve rate of driving to burn before air port to increase furnace processor and strengthen injected fuel.
Oxygen-enriched mode in the prior art has 3 kinds：
1, cold air duct after decompression is added in the hyperbaric oxygen that oxygen installation sends, enters blast furnace by hot-blast stove.This confession
Oxygen mode can cure by oxygen therapy at a distance, and oxygen pressure is high, feed line diameters can suitably reduce, but generally there are certain for hot blast stove system
Air leak rate of air curtain, especially medium and small blast furnace air leak rate of air curtain, oxygen loss are more.
2, low oxygen or low-purity oxygen is added in blower inlet, is sent to blower inlet mixing, and by drum
Blast furnace is sent into after hot wind stove heat together with cold wind after wind turbine pressurization, this offering oxygen way is the disadvantage is that rich-oxygen of blast furnace rate is high
When, very high to the security performance requirement of air blower, security protection is cumbersome.
3, using oxygen coal gun or oxy coal burner, oxygen is directly added into blast-furnace tuyere.By oxygen coal gun by high pressure oxygen
It is sent into blast furnace, the disadvantage is that oxygen is led near air port, pipeline is complicated, and safety protection equipment is cumbersome.
Invention content
A kind of blast furnace blower oxygen enrichment system of present invention offer and method, solve or part solves richness in the prior art
Oxygen mode is there are certain air leak rate of air curtain, especially medium and small blast furnace air leak rate of air curtain, and oxygen loss is more, and security protection is cumbersome, pipeline
Complicated technical problem.
In order to solve the above technical problems, the present invention provides a kind of blast furnace blower oxygen enrichment system, it is connected to blast furnace；It is described
Oxygen enrichment system includes：Pressure-variable adsorption oxygen generator；Air blower, one end are connected to the pressure-variable adsorption oxygen generator；First
Oxygen-enriching device, one end are connected to the air blower other end；Cryogenic rectification oxygen generator；Second oxygen-enriching device, one end and institute
State the connection of cryogenic rectification oxygen generator；Connecting pipe, one end are connected to the blast furnace, the other end and first oxygen-enriching device
And second the oxygen-enriching device other end connection.
Further, it is provided with regulating valve between the pressure-variable adsorption oxygen generator and the air blower.
Further, first oxygen-enriching device includes：First oxygen channel, one end connect with the air blower other end
Logical, the other end is connected to the other end of the connecting pipe, and vent valve, check are disposed on first oxygen channel
Valve, main air door and match air-valve.
Further, second oxygen-enriching device includes：Second oxygen channel, one end occur with the cryogenic rectification oxygen
Device is connected to, and the other end is connected to the other end of the connecting pipe, and the first cut-off is disposed on second oxygen channel
Valve, filter, pressure regulator valve and the second shut-off valve.
Further, blast furnace blower oxygen enrichment system further includes：Inlet filter is connected to one end of the air blower.
Based on identical inventive concept, the present invention also provides a kind of blast furnace blower oxygen enriching methods, are based on claim 1-5
Blast furnace blower oxygen enrichment system described in any one, includes the following steps：Pressure-variable adsorption oxygen generator works, the transformation
Adsorption of oxygen generator extracts low oxygen from low-pressure low-purity air；The low oxygen is passed through the first richness by air blower
Oxygen device is delivered to connecting pipe；Cryogenic rectification oxygen generator works, and the cryogenic rectification oxygen generator produces hyperbaric oxygen
Gas；The high pressure oxygen is delivered to connecting pipe by the second oxygen-enriching device；The high pressure oxygen is with the low oxygen in institute
Enter blast furnace after stating connecting pipe mixing.
Further, it is provided with regulating valve between the pressure-variable adsorption oxygen generator and the air blower.
Further, first oxygen-enriching device includes：First oxygen channel, one end connect with the air blower other end
Logical, the other end is connected to the other end of the connecting pipe, and vent valve, check are disposed on first oxygen channel
Valve, main air door and match air-valve.
Further, second oxygen-enriching device includes：Second oxygen channel, one end occur with the cryogenic rectification oxygen
Device is connected to, and the other end is connected to the other end of the connecting pipe, and the first cut-off is disposed on second oxygen channel
Valve, filter, pressure regulator valve and the second shut-off valve.
Further, blast furnace blower oxygen enriching method of the present invention further includes：Inlet filter, one end with the air blower
Connection.
Blast furnace blower oxygen enrichment system provided by the invention and the work of the pressure-variable adsorption oxygen generator of method, pressure-variable adsorption
Oxygen generator extracts low oxygen from low-pressure low-purity air, and air blower is defeated by the first oxygen-enriching device by low oxygen
It send to connecting pipe, the work of cryogenic rectification oxygen generator, cryogenic rectification oxygen generator produces high pressure oxygen, and high pressure oxygen is logical
It crosses the second oxygen-enriching device and is delivered to connecting pipe, high pressure oxygen enters blast furnace with low oxygen after connecting pipe mixes, can be with
The place capacity for reducing oxygen-enriching device, reduces the cost of investment of equipment, and ensure rich-oxygen of blast furnace stablizes supply, and oxygen loss is few,
Security protection is easier, and pipeline is simple.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of blast furnace blower oxygen enrichment system provided in an embodiment of the present invention.
Specific implementation mode
Referring to Fig. 1, a kind of blast furnace blower oxygen enrichment system provided in an embodiment of the present invention is connected to blast furnace 3；It is described oxygen-enriched
System includes：Pressure-variable adsorption oxygen generator 1, air blower 4, the first oxygen-enriching device 5, cryogenic rectification oxygen generator 2, second are rich
Oxygen device 6 and connecting pipe 9.
4 one end of the air blower is connected to the pressure-variable adsorption oxygen generator 1.
Described first oxygen-enriching device, 5 one end is connected to 4 other end of the air blower.
Described second oxygen-enriching device, 6 one end is connected to the cryogenic rectification oxygen generator 2.
9 one end of the connecting pipe is connected to the blast furnace 3, and the other end and first oxygen-enriching device 5 and second are oxygen-enriched
6 other end of device is connected to.
The structure of pressure-variable adsorption oxygen generator is discussed in detail.
It is provided with regulating valve 7 between the pressure-variable adsorption oxygen generator 1 and the air blower 4, according to need of work, is led to
Cross flow, pressure and temperature that the regulating valve 7 adjusts low oxygen.
The structure of the first oxygen-enriching device is discussed in detail.
First oxygen-enriching device includes：First oxygen channel 5-5.
Described one end first oxygen channel 5-5 is connected to 4 other end of the air blower, the other end and the connecting pipe 9
The other end connection, low oxygen is delivered to the connecting pipe 9.It is disposed with and puts on the first oxygen channel 5-5
Air-valve 5-1, non-return valve 5-2, main air door 5-3 and match air-valve 5-4.The vent valve 5-1 is used for discharge gas, makes cycle Low Pressure Oxygen
Gas is unobstructed.The non-return valve 5-2 prevents low oxygen from flowing backwards.The main air door 5-3 adjusts the entrance of low oxygen as needed
Amount.It is described that low oxygen is assigned in required blast furnace 3 with air-valve 5-4.
The structure of the second oxygen-enriching device is discussed in detail.
Second oxygen-enriching device includes：Second oxygen channel 6-5.
Described one end second oxygen channel 6-5 is connected to the cryogenic rectification oxygen generator 2, and the other end is connected to described
The other end of pipeline 9 is connected to, and high pressure oxygen is delivered to the connecting pipe 9.It is set gradually on the second oxygen channel 6-5
There are the first shut-off valve 6-1, filter 6-2, pressure regulator valve 6-3 and the second shut-off valve 6-4.The first shut-off valve 6-1 is for cutting off
Or adjust high pressure oxygen.The filter 6-2 filters out the impurity in high pressure oxygen.The pressure regulator valve 6-3 adjusts high pressure oxygen
Pressure.The second shut-off valve 6-4 cut-outs adjust high pressure oxygen.
Blast furnace blower oxygen enrichment system of the present invention further includes：Inlet filter 8.
The inlet filter 8 is connected to one end of the air blower 4, impurity, dust etc. in air is removed, after filtering
Cleaned air enter air blower, blower efficiency is improved, by filtered air delivery to air blower.The inlet filter
Air moisture eliminator is provided between 8 and the air blower 4, the moisture for taking out air.
Based on identical inventive concept, the present invention also provides a kind of blast furnace blower oxygen enriching methods to include the following steps：
Step 1, pressure-variable adsorption oxygen generator 1 works, and the pressure-variable adsorption oxygen generator 1 is empty from low-pressure low-purity
Low oxygen is extracted in gas.
Step 2, the low oxygen is delivered to connecting pipe 9 by air blower 4 by the first oxygen-enriching device 5.
Step 3, cryogenic rectification oxygen generator 2 works, and the cryogenic rectification oxygen generator 2 produces high pressure oxygen.
Step 4, the high pressure oxygen is delivered to connecting pipe 9 by the second oxygen-enriching device 6.
Step 5, the high pressure oxygen enters blast furnace 3 with the low oxygen after the connecting pipe 9 mixes.
The structure of pressure-variable adsorption oxygen generator is discussed in detail.
It is provided with regulating valve 7 between the pressure-variable adsorption oxygen generator 1 and the air blower 4, according to need of work, is led to
Cross flow, pressure and temperature that the regulating valve 7 adjusts low oxygen.
The structure of the first oxygen-enriching device is discussed in detail.
First oxygen-enriching device includes：First oxygen channel 5-5.
Described one end first oxygen channel 5-5 is connected to 4 other end of the air blower, the other end and the connecting pipe 9
The other end connection, low oxygen is delivered to the connecting pipe 9.It is disposed with and puts on the first oxygen channel 5-5
Air-valve 5-1, non-return valve 5-2, main air door 5-3 and match air-valve 5-4.The vent valve 5-1 is used for discharge gas, makes cycle Low Pressure Oxygen
Gas is unobstructed.The non-return valve 5-2 prevents low oxygen from flowing backwards.The main air door 5-3 adjusts the entrance of low oxygen as needed
Amount.It is described that low oxygen is assigned in required blast furnace 3 with air-valve 5-4.
The structure of the second oxygen-enriching device is discussed in detail.
Second oxygen-enriching device includes：Second oxygen channel 6-5.
Described one end second oxygen channel 6-5 is connected to the cryogenic rectification oxygen generator 2, and the other end is connected to described
The other end of pipeline 9 is connected to, and high pressure oxygen is delivered to the connecting pipe 9.It is set gradually on the second oxygen channel 6-5
There are the first shut-off valve 6-1, filter 6-2, pressure regulator valve 6-3 and the second shut-off valve 6-4.The first shut-off valve 6-1 is for cutting off
Or adjust high pressure oxygen.The filter 6-2 filters out the impurity in high pressure oxygen.The pressure regulator valve 6-3 adjusts high pressure oxygen
Pressure.The second shut-off valve 6-4 cut-outs adjust high pressure oxygen.
Blast furnace blower oxygen enriching method of the present invention further includes：Inlet filter 8.
The inlet filter 8 is connected to one end of the air blower 4, impurity, dust etc. in air is removed, after filtering
Cleaned air enter air blower, blower efficiency is improved, by filtered air delivery to air blower.The inlet filter
Air moisture eliminator is provided between 8 and the air blower 4, the moisture for taking out air.
The embodiment of the present invention is introduced in order to clearer, is introduced from the application method of the embodiment of the present invention below.
Pressure-variable adsorption oxygen generator 1 works, and pressure-variable adsorption oxygen generator 1 extracts low from low-pressure low-purity air
Oxygen is pressed, increases Rich Oxygen Amount before 4 machine of air blower, the place capacity of oxygen-enriching device after 4 machine of air blower can be reduced, reduce equipment
Cost of investment.It is provided with regulating valve 7 between pressure-variable adsorption oxygen generator 1 and air blower 4, according to need of work, passes through adjusting
Valve 7 adjusts flow, pressure and the temperature of low oxygen.Low oxygen is delivered to company by air blower 4 by the first oxygen channel 5-5
It threads a pipe 9, vent valve 5-1, non-return valve 5-2, main air door 5-3 are disposed on the first oxygen channel 5-5 and match air-valve 5-4,
Enter the pressure and flow of connecting pipe 9 for regulating and controlling low oxygen.Cryogenic rectification oxygen generator 2 works, cryogenic rectification oxygen
Gas generator 2 produces high pressure oxygen, and high pressure oxygen is delivered to connecting pipe 9, the second oxygen channel by the second oxygen channel 6-5
The first shut-off valve 6-1, filter 6-2, pressure regulator valve 6-3 and the second shut-off valve 6-4 are disposed on 6-5, for regulating and controlling high pressure
Oxygen enters the pressure and flow of connecting pipe 9.High pressure oxygen enters blast furnace with low oxygen after the connecting pipe 9 mixes
3, the place capacity of oxygen-enriching device can be reduced, reduce the cost of investment of equipment, ensure the supply of stablizing of rich-oxygen of blast furnace, oxygen damage
It loses less, security protection is easier, and pipeline is simple.
It should be noted last that the above specific implementation mode is merely illustrative of the technical solution of the present invention and unrestricted,
Although being described the invention in detail with reference to example, it will be understood by those of ordinary skill in the art that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit of the technical scheme of the invention and range, should all cover
In the scope of the claims of the present invention.
Claims (8)
1. a kind of blast furnace blower oxygen enrichment system is connected to blast furnace (3)；It is characterized in that, the oxygen enrichment system includes：
Pressure-variable adsorption oxygen generator (1)；
Air blower (4), one end are connected to the pressure-variable adsorption oxygen generator (1)；
First oxygen-enriching device (5), one end are connected to the air blower (4) other end；
Cryogenic rectification oxygen generator (2)；
Second oxygen-enriching device (6), one end are connected to the cryogenic rectification oxygen generator (2)；
Connecting pipe (9), one end are connected to the blast furnace (3), the other end and first oxygen-enriching device (5) and the second oxygen-enriched dress
Set the connection of (6) other end；
First oxygen-enriching device includes：
First oxygen channel (5-5), one end are connected to the air blower (4) other end, the other end and the connecting pipe (9)
The other end is connected to, and vent valve (5-1), non-return valve (5-2), main air door (5- are disposed on first oxygen channel (5-5)
3) and with air-valve (5-4)；
Second oxygen-enriching device includes：
Second oxygen channel (6-5), one end are connected to the cryogenic rectification oxygen generator (2), the other end and the communicating pipe
The other end in road (9) is connected to, and the first shut-off valve (6-1), filter (6- are disposed on second oxygen channel (6-5)
2), pressure regulator valve (6-3) and the second shut-off valve (6-4).
2. oxygen enrichment system according to claim 1, it is characterised in that：
Regulating valve (7) is provided between the pressure-variable adsorption oxygen generator (1) and the air blower (4).
3. oxygen enrichment system according to claim 1, which is characterized in that further include：
Inlet filter (8) is connected to one end of the air blower (4).
4. a kind of blast furnace blower oxygen enriching method, based on the blast furnace blower oxygen enrichment system described in claim 1-3 any one,
It is characterized by comprising the following steps：
Pressure-variable adsorption oxygen generator (1) works, and the pressure-variable adsorption oxygen generator (1) carries from low-pressure low-purity air
Take low oxygen；
The low oxygen is delivered to connecting pipe (9) by air blower (4) by the first oxygen-enriching device (5)；
Cryogenic rectification oxygen generator (2) works, and the cryogenic rectification oxygen generator (2) produces high pressure oxygen；
The high pressure oxygen is delivered to connecting pipe (9) by the second oxygen-enriching device (6)；
The high pressure oxygen enters blast furnace (3) with the low oxygen after the connecting pipe (9) mixes.
5. oxygen enriching method according to claim 4, it is characterised in that：
Regulating valve (7) is provided between the pressure-variable adsorption oxygen generator (1) and the air blower (4).
6. oxygen enriching method according to claim 4, which is characterized in that first oxygen-enriching device includes：
First oxygen channel (5-5), one end are connected to the air blower (4) other end, the other end and the connecting pipe (9)
The other end is connected to, and vent valve (5-1), non-return valve (5-2), main air door (5- are disposed on first oxygen channel (5-5)
3) and with air-valve (5-4).
7. oxygen enriching method according to claim 4, which is characterized in that second oxygen-enriching device includes：
Second oxygen channel (6-5), one end are connected to the cryogenic rectification oxygen generator (2), the other end and the communicating pipe
The other end in road (9) is connected to, and the first shut-off valve (6-1), filter (6- are disposed on second oxygen channel (6-5)
2), pressure regulator valve (6-3) and the second shut-off valve (6-4).
8. oxygen enriching method according to claim 4, which is characterized in that further include：
Inlet filter (8) is connected to one end of the air blower (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610748250.2A CN106222343B (en) | 2016-08-29 | 2016-08-29 | Oxygen enrichment system and method for blast furnace blower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610748250.2A CN106222343B (en) | 2016-08-29 | 2016-08-29 | Oxygen enrichment system and method for blast furnace blower |
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| Publication Number | Publication Date |
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| CN106222343A CN106222343A (en) | 2016-12-14 |
| CN106222343B true CN106222343B (en) | 2018-11-09 |
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| CN107641674A (en) * | 2017-10-31 | 2018-01-30 | 首钢京唐钢铁联合有限责任公司 | Blast furnace oxygen enrichment system and smelting blast furnace system |
| CN111646433B (en) * | 2020-06-18 | 2022-04-01 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | Oxygen generation equipment, oxygen generation method using same and smelting equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2753638B1 (en) * | 1996-09-25 | 1998-10-30 | PROCESS FOR SUPPLYING A GAS CONSUMER UNIT | |
| CN104060005A (en) * | 2013-03-18 | 2014-09-24 | 宝山钢铁股份有限公司 | Oxygen enrichment system of blast furnace blower |
| CN205001856U (en) * | 2015-09-15 | 2016-01-27 | 首钢京唐钢铁联合有限责任公司 | Oxygen delivery pipe network device |
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