CN106222343A - A kind of blast furnace blower oxygen enrichment system and method - Google Patents
A kind of blast furnace blower oxygen enrichment system and method Download PDFInfo
- Publication number
- CN106222343A CN106222343A CN201610748250.2A CN201610748250A CN106222343A CN 106222343 A CN106222343 A CN 106222343A CN 201610748250 A CN201610748250 A CN 201610748250A CN 106222343 A CN106222343 A CN 106222343A
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- China
- Prior art keywords
- oxygen
- blast furnace
- pressure
- aerator
- valve
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Classifications
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- 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
Abstract
The invention discloses a kind of blast furnace blower oxygen enrichment system and method, belong to technical field of smelting.Described blast furnace blower oxygen enrichment system includes: pressure-variable adsorption oxygen generator；Aerator one end connects with pressure-variable adsorption oxygen generator；First oxygen-enriching device one end connects with the aerator other end；Cryogenic rectification oxygen generator；Second oxygen-enriching device one end connects with cryogenic rectification oxygen generator；Connecting pipe one end connects with blast furnace, the other end and the first oxygen-enriching device and the connection of the second oxygen-enriching device other end.Blast furnace blower oxygen enrichment system of the present invention and method can reduce the place capacity of oxygen-enriching device, reduce the cost of investment of equipment, it is ensured that the stable supply of rich-oxygen of blast furnace.
Description
Technical field
The present invention relates to technical field of smelting, particularly to a kind of blast furnace blower oxygen enrichment system and method
Background technology
In order to improve blast-melted yield, reduce the production cost of blast furnace, large blast furnace in the world, the most all use
The technology of oxygen-rich smelting.Oxygen-rich smelting refers to: sends into blast furnace and participates in the content of oxygen in the compressed air (also referred to as: wind) smelted
More than 21% (oxygen content in air is about 21% in nature), such blast furnace process is referred to as oxygen-rich smelting.Blast furnace
Oxygen-enriched air blast is to add industry oxygen (general oxygen-containing 85%-99.5%) in blast furnace air, and being that air blast is oxygen-containing exceedes atmospheric level,
Its objective is that improving rate of driving burns before air port to increase furnace processor and strengthening injected fuel.
Oxygen-enriched mode of the prior art has 3 kinds:
1, hyperbaric oxygen oxygen installation sent here adds cold air duct after decompression, enters blast furnace through air stove.This confession
Oxygen mode can be cured by oxygen therapy at a distance, and oxygen pressure is high, feed line diameters can suitably reduce, but hot blast stove system generally there are certain
Air leak rate of air curtain, particularly medium and small blast furnace air leak rate of air curtain, oxygen loss is more.
2, blower inlet adds low oxygen or low-purity oxygen, delivers to blower inlet mixing, and through drum
Send into blast furnace after blower fan pressurization together after air stove is heated with cold wind, this offering oxygen way shortcoming is that rich-oxygen of blast furnace rate is high
Time, the security performance of aerator is required the highest, security protection is cumbersome.
3, utilize oxygen coal gun or oxy coal burner, oxygen is directly added into blast-furnace tuyere.By oxygen coal gun by high pressure oxygen
Sending into blast furnace, shortcoming is that oxygen causes near air port, and pipeline is complicated, and safety protection equipment is loaded down with trivial details.
Summary of the invention
The present invention provides a kind of blast furnace blower oxygen enrichment system and method, solves or part solves in prior art rich
There is certain air leak rate of air curtain, particularly medium and small blast furnace air leak rate of air curtain in oxygen mode, oxygen loss is more, and security protection is cumbersome, pipeline
Complicated technical problem.
For solving above-mentioned technical problem, the invention provides a kind of blast furnace blower oxygen enrichment system, connect with blast furnace；Described
Oxygen enrichment system includes: pressure-variable adsorption oxygen generator；Aerator, one end connects with described pressure-variable adsorption oxygen generator；First
Oxygen-enriching device, one end connects with the described aerator 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 connects with described blast furnace, the other end and described first oxygen-enriching device
And second the oxygen-enriching device other end connection.
Further, it is provided with regulation valve between described pressure-variable adsorption oxygen generator and described aerator.
Further, described first oxygen-enriching device includes: the first oxygen channel, and one end is with the described aerator other end even
Logical, the other end connects with the other end of described connecting pipe, and described first oxygen channel is disposed with vent valve, check
Valve, main air door and air distribution valve.
Further, described second oxygen-enriching device includes: the second oxygen channel, and one end occurs with described cryogenic rectification oxygen
Device connects, and the other end connects with the other end of described connecting pipe, and described second oxygen channel is disposed with the first cut-off
Valve, filter, pressure regulator valve and the second stop valve.
Further, blast furnace blower oxygen enrichment system also includes: inlet filter, connects with one end of described aerator.
Based on identical inventive concept, the present invention also provides for a kind of blast furnace blower oxygen enriching method, based on claim 1-5
Blast furnace blower oxygen enrichment system described in any one, comprises the following steps: pressure-variable adsorption oxygen generator works, described transformation
Adsorption of oxygen generator extracts low oxygen from low-pressure low-purity air；Aerator is rich by first by described low oxygen
Oxygen device is delivered to connecting pipe；Cryogenic rectification oxygen generator works, and described cryogenic rectification oxygen generator produces hyperbaric oxygen
Gas；Described high pressure oxygen is delivered to connecting pipe by the second oxygen-enriching device；Described high pressure oxygen and described low oxygen are in institute
Blast furnace is entered after stating connecting pipe mixing.
Further, it is provided with regulation valve between described pressure-variable adsorption oxygen generator and described aerator.
Further, described first oxygen-enriching device includes: the first oxygen channel, and one end is with the described aerator other end even
Logical, the other end connects with the other end of described connecting pipe, and described first oxygen channel is disposed with vent valve, check
Valve, main air door and air distribution valve.
Further, described second oxygen-enriching device includes: the second oxygen channel, and one end occurs with described cryogenic rectification oxygen
Device connects, and the other end connects with the other end of described connecting pipe, and described second oxygen channel is disposed with the first cut-off
Valve, filter, pressure regulator valve and the second stop valve.
Further, blast furnace blower oxygen enriching method of the present invention also includes: inlet filter, with one end of described aerator
Connection.
Blast furnace blower oxygen enrichment system and the pressure-variable adsorption oxygen generator of method that the present invention provides work, pressure-variable adsorption
Oxygen generator extracts low oxygen from low-pressure low-purity air, and aerator is defeated by the first oxygen-enriching device by low oxygen
Delivering to connecting pipe, cryogenic rectification oxygen generator works, and cryogenic rectification oxygen generator produces high pressure oxygen, and high pressure oxygen leads to
Crossing the second oxygen-enriching device and be delivered to connecting pipe, high pressure oxygen enters blast furnace with low oxygen after connecting pipe mixes, permissible
Reducing the place capacity of oxygen-enriching device, reduce the cost of investment of equipment, it is ensured that the stable supply of rich-oxygen of blast furnace, oxygen loss is few,
Security protection is easier, and pipeline is simple.
Accompanying drawing explanation
The structural representation of a kind of blast furnace blower oxygen enrichment system that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
See Fig. 1, a kind of blast furnace blower oxygen enrichment system that the embodiment of the present invention provides, connect with blast furnace 3；Described oxygen-enriched
System includes: pressure-variable adsorption oxygen generator 1, aerator the 4, first oxygen-enriching device 5, cryogenic rectification oxygen generator 2, second are rich
Oxygen device 6 and connecting pipe 9.
Described aerator 4 one end connects with described pressure-variable adsorption oxygen generator 1.
Described first oxygen-enriching device 5 one end connects with described aerator 4 other end.
Described second oxygen-enriching device 6 one end connects with described cryogenic rectification oxygen generator 2.
Described connecting pipe 9 one end connects with described blast furnace 3, and the other end is oxygen-enriched with described first oxygen-enriching device 5 and second
Device 6 other end connects.
The structure of pressure-variable adsorption oxygen generator is discussed in detail.
Regulation valve 7 it is provided with between described pressure-variable adsorption oxygen generator 1 and described aerator 4, according to job demand, logical
Cross described regulation valve 7 and regulate the flow of low oxygen, pressure and temperature.
The structure of first oxygen-enriching device is discussed in detail.
Described first oxygen-enriching device includes: the first oxygen channel 5-5.
Described first oxygen channel 5-5 one end connects with described aerator 4 other end, the other end and described connecting pipe 9
The other end connection, low oxygen is delivered to described connecting pipe 9.It is disposed with on described first oxygen channel 5-5 and puts
Air-valve 5-1, non-return valve 5-2, main air door 5-3 and air distribution valve 5-4.Described vent valve 5-1 is used for discharging gas, makes circulation Low Pressure Oxygen
Gas is unobstructed.Described non-return valve 5-2 prevents low oxygen from flowing backwards.Described main air door 5-3 regulates the entrance of low oxygen as required
Amount.Low oxygen is assigned in required blast furnace 3 by described air distribution valve 5-4.
The structure of second oxygen-enriching device is discussed in detail.
Described second oxygen-enriching device includes: the second oxygen channel 6-5.
Described second oxygen channel 6-5 one end connects with described cryogenic rectification oxygen generator 2, and the other end connects with described
The other end connection of pipeline 9, is delivered to described connecting pipe 9 by high pressure oxygen.Set gradually on described second oxygen channel 6-5
There are the first stop valve 6-1, filter 6-2, pressure regulator valve 6-3 and the second stop valve 6-4.Described first stop valve 6-1 is used for cutting off
Or regulation high pressure oxygen.Described filter 6-2 filters out the impurity in high pressure oxygen.Described pressure regulator valve 6-3 regulates high pressure oxygen
Pressure.Described second stop valve 6-4 cuts off or regulation high pressure oxygen.
Blast furnace blower oxygen enrichment system of the present invention also includes: inlet filter 8.
Described inlet filter 8 connects with one end of described aerator 4, removes the impurity in air, dust etc., after filtration
Cleaned air enter aerator, improve blower efficiency, will filter after air be delivered to aerator.Described inlet filter
Air moisture eliminator it is provided with, for taking out the moisture of air between 8 and described aerator 4.
Based on identical inventive concept, the present invention also provides for a kind of blast furnace blower oxygen enriching method and comprises the following steps:
Step 1, pressure-variable adsorption oxygen generator 1 works, and described pressure-variable adsorption oxygen generator 1 is empty from low-pressure low-purity
Gas extracts low oxygen.
Step 2, described low oxygen is delivered to connecting pipe 9 by the first oxygen-enriching device 5 by aerator 4.
Step 3, cryogenic rectification oxygen generator 2 works, and described cryogenic rectification oxygen generator 2 produces high pressure oxygen.
Step 4, described high pressure oxygen is delivered to connecting pipe 9 by the second oxygen-enriching device 6.
Step 5, described high pressure oxygen enters blast furnace 3 with described low oxygen after described connecting pipe 9 mixes.
The structure of pressure-variable adsorption oxygen generator is discussed in detail.
Regulation valve 7 it is provided with between described pressure-variable adsorption oxygen generator 1 and described aerator 4, according to job demand, logical
Cross described regulation valve 7 and regulate the flow of low oxygen, pressure and temperature.
The structure of first oxygen-enriching device is discussed in detail.
Described first oxygen-enriching device includes: the first oxygen channel 5-5.
Described first oxygen channel 5-5 one end connects with described aerator 4 other end, the other end and described connecting pipe 9
The other end connection, low oxygen is delivered to described connecting pipe 9.It is disposed with on described first oxygen channel 5-5 and puts
Air-valve 5-1, non-return valve 5-2, main air door 5-3 and air distribution valve 5-4.Described vent valve 5-1 is used for discharging gas, makes circulation Low Pressure Oxygen
Gas is unobstructed.Described non-return valve 5-2 prevents low oxygen from flowing backwards.Described main air door 5-3 regulates the entrance of low oxygen as required
Amount.Low oxygen is assigned in required blast furnace 3 by described air distribution valve 5-4.
The structure of second oxygen-enriching device is discussed in detail.
Described second oxygen-enriching device includes: the second oxygen channel 6-5.
Described second oxygen channel 6-5 one end connects with described cryogenic rectification oxygen generator 2, and the other end connects with described
The other end connection of pipeline 9, is delivered to described connecting pipe 9 by high pressure oxygen.Set gradually on described second oxygen channel 6-5
There are the first stop valve 6-1, filter 6-2, pressure regulator valve 6-3 and the second stop valve 6-4.Described first stop valve 6-1 is used for cutting off
Or regulation high pressure oxygen.Described filter 6-2 filters out the impurity in high pressure oxygen.Described pressure regulator valve 6-3 regulates high pressure oxygen
Pressure.Described second stop valve 6-4 cuts off or regulation high pressure oxygen.
Blast furnace blower oxygen enriching method of the present invention also includes: inlet filter 8.
Described inlet filter 8 connects with one end of described aerator 4, removes the impurity in air, dust etc., after filtration
Cleaned air enter aerator, improve blower efficiency, will filter after air be delivered to aerator.Described inlet filter
Air moisture eliminator it is provided with, for taking out the moisture of air between 8 and described aerator 4.
Introduce the embodiment of the present invention in order to clearer, introduced from the using 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
Pressure oxygen, increases Rich Oxygen Amount before aerator 4 machine, can reduce the place capacity of oxygen-enriching device after aerator 4 machine, reduce equipment
Cost of investment.Regulation valve 7 it is provided with, according to job demand, by regulation between pressure-variable adsorption oxygen generator 1 and aerator 4
Valve 7 regulates the flow of low oxygen, pressure and temperature.Low oxygen is delivered to even by aerator 4 by the first oxygen channel 5-5
Thread a pipe 9, the first oxygen channel 5-5 be disposed with vent valve 5-1, non-return valve 5-2, main air door 5-3 and air distribution valve 5-4,
Pressure and the flow of connecting pipe 9 is entered 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
It is disposed with the first stop valve 6-1, filter 6-2, pressure regulator valve 6-3 and the second stop valve 6-4 on 6-5, is used for regulating and controlling high pressure
Oxygen enters pressure and the flow of connecting pipe 9.High pressure oxygen enters blast furnace with low oxygen after described connecting pipe 9 mixes
3, the place capacity of oxygen-enriching device can be reduced, reduce the cost of investment of equipment, it is ensured that the stable supply of rich-oxygen of blast furnace, oxygen damages
Losing few, security protection is easier, and pipeline is simple.
It should be noted last that, above detailed description of the invention only in order to technical scheme to be described and unrestricted,
Although the present invention being described in detail with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent, without deviating from the spirit and scope of technical solution of the present invention, it all should be contained
In the middle of scope of the presently claimed invention.
Claims (10)
1. a blast furnace blower oxygen enrichment system, connects with blast furnace (3)；It is characterized in that, described oxygen enrichment system includes:
Pressure-variable adsorption oxygen generator (1)；
Aerator (4), one end connects with described pressure-variable adsorption oxygen generator (1)；
First oxygen-enriching device (5), one end connects with described aerator (4) other end；
Cryogenic rectification oxygen generator (2)；
Second oxygen-enriching device (6), one end connects with described cryogenic rectification oxygen generator (2)；
Connecting pipe (9), one end connects with described blast furnace (3), the other end and described first oxygen-enriching device (5) and the second oxygen-enriched dress
Put the connection of (6) other end.
Oxygen enrichment system the most according to claim 1, it is characterised in that:
Regulation valve (7) it is provided with between described pressure-variable adsorption oxygen generator (1) and described aerator (4).
Oxygen enrichment system the most according to claim 1, it is characterised in that described first oxygen-enriching device includes:
First oxygen channel (5-5), one end connects with described aerator (4) other end, the other end and described connecting pipe (9)
The other end connects, and described first oxygen channel (5-5) is disposed with vent valve (5-1), non-return valve (5-2), main air door (5-
3) and air distribution valve (5-4).
Oxygen enrichment system the most according to claim 1, it is characterised in that described second oxygen-enriching device includes:
Second oxygen channel (6-5), one end connects with described cryogenic rectification oxygen generator (2), the other end and described communicating pipe
The other end connection in road (9), described second oxygen channel (6-5) is disposed with the first stop valve (6-1), filter (6-
2), pressure regulator valve (6-3) and the second stop valve (6-4).
Oxygen enrichment system the most according to claim 1, it is characterised in that also include:
Inlet filter (8), connects with one end of described aerator (4).
6. a blast furnace blower oxygen enriching method, based on the blast furnace blower oxygen enrichment system described in claim 1-5 any one,
It is characterized in that, comprise the following steps:
Pressure-variable adsorption oxygen generator (1) works, and described pressure-variable adsorption oxygen generator (1) carries from low-pressure low-purity air
Take low oxygen；
Described low oxygen is delivered to connecting pipe (9) by the first oxygen-enriching device (5) by aerator (4)；
Cryogenic rectification oxygen generator (2) works, and described cryogenic rectification oxygen generator (2) produces high pressure oxygen；
Described high pressure oxygen is delivered to connecting pipe (9) by the second oxygen-enriching device (6)；
Described high pressure oxygen enters blast furnace (3) with described low oxygen after described connecting pipe (9) mixes.
Oxygen enriching method the most according to claim 6, it is characterised in that:
Regulation valve (7) it is provided with between described pressure-variable adsorption oxygen generator (1) and described aerator (4).
Oxygen enriching method the most according to claim 6, it is characterised in that described first oxygen-enriching device includes:
First oxygen channel (5-5), one end connects with described aerator (4) other end, the other end and described connecting pipe (9)
The other end connects, and described first oxygen channel (5-5) is disposed with vent valve (5-1), non-return valve (5-2), main air door (5-
3) and air distribution valve (5-4).
Oxygen enriching method the most according to claim 6, it is characterised in that described second oxygen-enriching device includes:
Second oxygen channel (6-5), one end connects with described cryogenic rectification oxygen generator (2), the other end and described communicating pipe
The other end connection in road (9), described second oxygen channel (6-5) is disposed with the first stop valve (6-1), filter (6-
2), pressure regulator valve (6-3) and the second stop valve (6-4).
Oxygen enriching method the most according to claim 6, it is characterised in that also include:
Inlet filter (8), connects with one end of described aerator (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610748250.2A CN106222343B (en) | 2016-08-29 | 2016-08-29 | A kind of blast furnace blower oxygen enrichment system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610748250.2A CN106222343B (en) | 2016-08-29 | 2016-08-29 | A kind of blast furnace blower oxygen enrichment system and method |
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| Publication Number | Publication Date |
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| CN106222343A true CN106222343A (en) | 2016-12-14 |
| CN106222343B CN106222343B (en) | 2018-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610748250.2A Active CN106222343B (en) | 2016-08-29 | 2016-08-29 | A kind of blast furnace blower oxygen enrichment system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107641674A (en) * | 2017-10-31 | 2018-01-30 | 首钢京唐钢铁联合有限责任公司 | A kind of rich-oxygen of blast furnace system and steelmaking furnace system |
| CN111646433A (en) * | 2020-06-18 | 2020-09-11 | 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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| 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 send pipe network device |
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2016
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1186862A (en) * | 1996-09-25 | 1998-07-08 | 液体空气乔治洛德方法利用和研究有限公司 | Process for feeding gas-consuming 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 send pipe network device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107641674A (en) * | 2017-10-31 | 2018-01-30 | 首钢京唐钢铁联合有限责任公司 | A kind of rich-oxygen of blast furnace system and steelmaking furnace system |
| CN111646433A (en) * | 2020-06-18 | 2020-09-11 | 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 |
| 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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| CN106222343B (en) | 2018-11-09 |
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