CN102660660A - Oxygen top-blowing control system of steel converter and system residue removing and oxygen guiding method - Google Patents
Oxygen top-blowing control system of steel converter and system residue removing and oxygen guiding method Download PDFInfo
- Publication number
- CN102660660A CN102660660A CN2012101656485A CN201210165648A CN102660660A CN 102660660 A CN102660660 A CN 102660660A CN 2012101656485 A CN2012101656485 A CN 2012101656485A CN 201210165648 A CN201210165648 A CN 201210165648A CN 102660660 A CN102660660 A CN 102660660A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- valve
- oxygen
- nitrogen
- group
- 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.)
- Granted
Links
Images
Classifications
-
- 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
Landscapes
- Pipeline Systems (AREA)
Abstract
The invention relates to an oxygen top-blowing control system of a steel converter and a system residue removing and oxygen guiding method. The oxygen top-blowing control system comprises at least one oxygen pipeline, at least one nitrogen pipeline and an oxygen lance. Each oxygen pipeline comprises components of a main pipe valve, a first filter, a first quick shutoff valve, a pressure regulating valve group, a flow rate regulating valve group or at least two flow rate regulating valve groups connected in parallel, and a check valve group or at least two check valves connected in parallel, and all the components are connected sequentially by a pipeline. Each nitrogen pipeline comprises components of a main pipe valve, a second filter, a second quick shutoff valve, a first bypass pressure regulating valve group, a remote pressure gauge, a second bypass pressure regulating valve group, a hand bleeding valve and a quick shutoff valve group or at least two quick shutoff valve groups connected in parallel, and all the components are connected sequentially by a pipeline. The system residue removing and oxygen guiding method includes blowing the oxygen pipeline by the aid of a blowing pipeline with one end connected to nitrogen. The oxygen top-blowing control system has the advantages of more reasonable configuration, high installation precision, higher safety and lower cost.
Description
Technical field
Type of the present invention relates to steel-making converter equipment, and the top blowing oxygen system and the system's residue that relate in particular to steel-making converter are removed and the oxygen introduction method.
Background technology
Top-blown converter steelmaking is short with its tap to tap time, it is many and obtain using more widely to smelt steel grade.But the installation that is provided with of the top blowing oxygen of existing steel-making converter (nitrogen) gas control system system is mainly carried out equipment purchasing, assembling and debugging according to user's design requirements by the third party at the scene; Produce such defective thus: 1) third party just simply overlaps required equipment; The suitability of equipment room is poor; The configuration of each valve is unreasonable in the system, and level of automation is low; 2) plant of required equipment in the system
The merchant is manyMany, thereby product performance are different, quality standard is different; With these device assembles to a time-out, will produce some row problems: at first setting accuracy be difficult to guarantee, the piping concentricity and the planeness that for example connect distinct device just are difficult to reach design requirements; Thereby cause the vibration equipment noise to rise; And equipment is under the vibration state always, and the fastening and sealing of each node just is difficult to guarantee in its system, will cause gas leakage; Gaseous tension is difficult to guarantee in the pipe, final causes system inefficiency or cisco unity malfunction; 2) because gas control system is typical inflammable and explosive pipe network; So require noresidue in equipment and the pipeline (like welding slag), no inflammable substance (pipe network needs degreasing), no generation of static electricity; And equipment is assembled welding at the scene; Receive condition restriction, be difficult to guarantee assembling quality and take precautions against uncertain and unsafe factor, this buries very big hidden danger to production; 3) product of a plurality of manufacturerss makes and checks and accepts compliance rate decline, thereby causes cost significantly to rise; 4) in the construction, each manufacturers shifts responsibility onto others and disputes over trifles seriously, is completed as scheduled thereby influence whole project.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, the gas control system of a kind of steel-making converter top blowing oxygen that a kind of high setting accuracy is provided, is convenient to automatic control, safety performance height and integrated level is high, its technical scheme is specific as follows:
Said oxygen blast system; Comprise at least one oxygen pipeline and at least one nitrogen pipeline; It is characterized in that each said oxygen pipeline comprises person in charge's valve of being connected successively by pipeline, first strainer, first repid cut-off valve, pressure regulator valve group, one group of regulating valve group or more than two groups and two groups and the regulating valve group that connects, one group of check valve set or more than two groups or two groups and the check valve set that connects, make oxygen pipeline have an input terminus or two or two above output terminals; Each said nitrogen pipeline comprises person in charge's valve of being connected successively by pipeline, second strainer, second repid cut-off valve, the first by-pass and pressure regulator valve group, teletransmission tensimeter, the second by-pass and pressure regulator valve group, manually diffuses valve, one group of repid cut-off valve group or more than two groups or two groups and the repid cut-off valve group that connects, and makes nitrogen pipeline have an input terminus or two or two above output terminals.
Said oxygen blast system further design is, said pressure regulator valve group is to be connected first pressure regulator valve and the first remote transfer signal tensimeter successively and formed by pipeline.
Said oxygen blast system further design is, said regulating valve group is to be connected second stopping valve, first-class scale, regulating valve, the 3rd stopping valve successively and formed by pipeline.
Said oxygen blast system further design is, said check valve set is to be connected the 4th stopping valve, the 3rd repid cut-off valve, the second remote transfer signal tensimeter and vacuum breaker successively and formed by pipeline.
The further design of said oxygen blast system is that said by-pass and pressure regulator valve group connects the 5th stopping valve, second pressure regulator valve and the 6th stopping valve branch road that forms and the 7th stopping valve that is connected to these branch road two ends successively by pipeline and forms.
Said oxygen blast system further design is, said repid cut-off valve group is to be connected the 4th repid cut-off valve and the 7th stopping valve successively and formed by pipeline.
Residue in the said top blowing oxygen system is removed and the oxygen introduction method is, adopted an end to be connected in a scavenging pipeline of nitrogen pipeline, the other end of this scavenging pipeline is connected the input terminus part of oxygen pipeline; And target being set at the said output terminal of oxygen pipeline, said scavenging pipeline comprises pipeline and is arranged on the valve on this pipeline, when removing on the oxygen pipeline residue; Making pressure on the nitrogen pipeline is 1.4～1.6 times of WP; Open the stopping valve on the scavenging pipeline, utilize the nitrogen several times purge oxygen pipeline that has certain pressure on the nitrogen pipeline, each 15～25 minutes; Target free from smutting during up to system's output terminal setting; Stop to purge, said output terminal on the closed oxygen pipeline and the stopping valve on the scavenging pipeline make said system lock; Be full of the nitrogen of 1.4～1.6 times of WPs in the oxygen pipeline, and pressurize 1～2 day; During the oxygen blast system works, the valve on the shut-down purge pipeline or the said scavenging pipeline of dismantling, and open source of oxygen, oxygen imports oxygen pipeline through nitrogen balance.
Said residue removing and the further design of oxygen introduction method are; Said scavenging pipeline one end is connected on first strainer and the pipeline between first repid cut-off valve on the said oxygen pipeline through threeway, and an end is connected on second strainer and the pipeline between second repid cut-off valve on the nitrogen pipeline through threeway.
Beneficial effect of the present invention is: 1) integrated level is high, and more reasonable, the optimization of each valve configuration is convenient to regulate control in the system, and level of automation is high; 2) each equipment is assembled in possessing the environment of better processing conditions; Location and setting accuracy are high; Thereby make the welding node quality high, guaranteed that again planeness, verticality, the right alignment of pipeline can both reach higher level, the vibration when making system's operation is little, noise is low; 3) the present invention adopts the bridging type purging by means of the nitrogen person in charge's nitrogen the oxygen blast pipe network to be purged to residual welding slag in the system and foreign matter; Oxygen blast pipe network to cleaning is full of nitrogen simultaneously; The nitrogen that when the oxygen blast pipe network is formally cured by oxygen therapy, is full of like this will guide gas as pipe network; And guaranteed oxygen therapy safety, the safety performance of system of the present invention is improved greatly; 4) with apparatus of the present invention shortened the installation period of steel-making converter top blowing oxygen equipment, quality improves, and cost can reduce by 15%～20% thus.
Description of drawings
Fig. 1 is the structural representation of steel-making converter top blowing oxygen of the present invention system.
Among the figure, 1 first stopping valve, 2 first strainers, 3 repid cut-off valve groups, 3 repid cut-off valve groups, 32 pressure regulator valves; 33 first remote transfer signal tensimeters, 4 regulating valve groups, 41 second stopping valve, 42 first flow meters, 43 regulating valves, 44 the 3rd stopping valve; 5 check valve set, 51 the 4th stopping valve, 52 second repid cut-off valves, 53 second remote transfer signal tensimeters, 54 vacuum breaker, 6 first by-pass and pressure regulator valve groups; 61 the 5th stopping valve, 62 second pressure regulator valves, 63 the 6th stopping valve, 74 the 7th stopping valve, 8 second by-pass and pressure regulator valve groups, 81 the 8th stopping valve; 82 the 3rd pressure regulator valves, 83 the 9th stopping valve, 10 manually diffuse valve, 9 repid cut-off valves, 91 the 3rd repid cut-off valves, 92 the tenth stopping valve; 10 oxygen rifles, 11 second under meters, 12 second remote transfer signal tensimeters, 13 second pressure regulator valves, 14 adapter bonnets, 15 pipelines; 16 stopping valve, 17 second strainers, A oxygen pipeline, B nitrogen pipeline, C scavenging pipeline.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model and advantage thereof are further specified.
Each oxygen pipeline A comprises following each assembly: be responsible for valve and (adopt stopping valve; I.e. first stopping valve 1), first strainer 2, first repid cut-off valve 9, pressure regulator valve group 3, two groups and the regulating valve group 4 that connects; Two groups and the check valve set 5 that connects, above-mentioned each assembly connect through pipeline 15 successively.Regulating valve group 4 in the pipeline can adopt two groups shown in figure and connect form with check valve set 5, also can adopt more forms of organizing and connect more, also can adopt one group structure formation certainly.
Among the above-mentioned oxygen pipeline A, pressure regulator valve group 3 connects first pressure regulator valve 32 and the first remote transfer signal tensimeter 33 successively by corresponding pipeline and forms.Regulating valve group 5 connects second stopping valve 41, first-class scale 42, regulating valve 43 and the 3rd stopping valve 44 successively by corresponding pipeline 15 and forms, and corresponding pipeline 15 connects second stopping valve 41, first-class scale 42, regulating valve 43 and the 3rd stopping valve 44 successively and forms.Check valve set 5 connects the 4th stopping valve 51, second repid cut-off valve 52, the second remote transfer signal tensimeter 53 and vacuum breaker 54 successively by corresponding pipeline and forms.Because the end of oxygen pipeline A is a check valve set 6, and check valve set 6 can be one group or two groups and connect or two groups of structures above and that connect, so the output terminal of oxygen pipeline A can be more than one or two or two.The present invention adopts two groups and the check valve set 6 that connects, and oxygen pipeline A forms two output terminals thus.
Each nitrogen pipeline B comprises following each assembly: be responsible for valve and (adopt stopping valve; I.e. second stopping valve 9), second strainer 17, second repid cut-off valve 13, the first by-pass and pressure regulator valve group 7, teletransmission tensimeter 12, the second by-pass and pressure regulator valve group 8, manually diffuse valve 10 and one group or two groups and two groups of above and connect repid cut-off valve groups 8, above-mentioned each assembly passes through pipe connection successively.First, second by-pass and pressure regulator valve group wherein constitutes identical, all is connected in series stopping valve (the 5th stopping valve 61 or the 8th stopping valve 71), pressure regulator valve (second pressure regulator valve 62 or the 3rd pressure regulator valve 72) and stopping valve (the 6th stopping valve 63 or the 8th stopping valve 73) successively through corresponding pipeline and forms with the 6th stopping valve (the 6th stopping valve 64 or the 8th stopping valve 74) splice connection of bypass.Repid cut-off valve group 8 connects the 4th repid cut-off valve 81 and the 7th stopping valve 82 successively by pipeline and forms.Because the output terminal of nitrogen pipeline B is a repid cut-off valve group 8, and repid cut-off valve group 8 can be one group or two groups or two groups with and the structure that connects, so the output terminal of nitrogen pipeline B can be more than one or two or two.The present invention adopts two groups and the repid cut-off valve group 8 that connects, thereby this nitrogen pipeline B has two output terminals.
Two output terminals of above-mentioned oxygen pipeline and two output terminals of nitrogen pipeline are corresponding in twos respectively to interconnect through threeway with an oxygen rifle 10 respectively again, forms the steel-making converter top blowing oxygen system of present embodiment.Being connected between adjacent each valve and between valve and the pipeline in the system; The bore different mining that meets connection is with adapter bonnet 14; Be connected through the flange that is provided with on it between strainer, valve and the pipeline; Above-mentioned used valve all is an oxygen class valve, to guarantee that reaching the required burn-proof and explosion prevention of oxygen therapy process requires and seal request.
Native system comes the variation of transfer system internal pressure through teletransmission tensimeter 33,53, and computer instruction is dynamically controlled system pressure according to this pressure change, keeps the oxygen rifle that a suitable output pressure value is arranged.When intrasystem oxygen pipeline A filled oxygen, when oxygen in the system reached the value of setting, teletransmission tensimeter 12,63 sent this information to corresponding computingmachine in source of oxygen, and repid cut-off valve 31 cuts out the oxygen supply of an oxygen pipeline A.The oxygen rifle descends during steelmaking oxygen blowing, when dropping to when opening the pressure position of oxygen point, sends this information to intrasystem computingmachine, and computer instruction teletransmission tensimeter 12,63, repid cut-off valve 31 are opened automatically.This moment, oxygen got into oxygen pipeline A via pipeline 15 through strainer 2, was regulated by required oxygen-supplying amount of steel-making and pressure automatically and was begun Oxygen Furnace Steel by pressure regulator valve 41 and regulating valve 53; When the oxygen rifle rises to when cutting out the oxygen point position, the oxygen cutting valve cuts out automatically, and reflux gas is blocked by vacuum breaker.The oxygen rifle stops oxygen blast.
Oxygen blast finishes converter tapping.At this moment; Repid cut-off valve 13 on the computer instruction nitrogen pipeline B is opened, and gets into nitrogen pipeline B via strainer 17 filtering nitrogen through repid cut-off valve 13, through pressure regulator valve 62,72 by slag splashing requirement feed high pressure nitrogen; Teletransmission tensimeter 12 will transmit current force value and send computingmachine to; Guaranteeing the force value of institute's supplying nitrogen, and with oxygen rifle D1, D2 to the converter high pressure nitrogen of jetting, utilize the impact energy of nitrogen and to the cooling effect of slag; The slag splash of staying in the stove is got up to be coated on the whole surface of converter lining; Form the slag resist, alleviating mechanical erosion wearing and tearing and the chemical erosion of steelmaking process to furnace lining, thus the purpose that reaches the protection furnace lining, improves furnace life, prolongs life of converter.
More than regulation and control alternate cycles in whole steelmaking process is carried out, and system of the present invention is in operation, and manual valve is a standard-sized sheet, only if when maintenance, manual valve cuts out.
Because oxygen pipeline A is inflammable and explosive pipeline; As having welding slag and foreign matter in the pipeline, very dangerous with the oxygen effect of high-speed cruising, in order to increase safety control; The present invention is provided with a scavenging pipeline C; Please refer again to Fig. 1, this scavenging pipeline comprises pipeline and is arranged on the valve on this pipeline, concrete employing one stopping valve 16.The end of scavenging pipeline C is connected on the nitrogen pipeline B, and the other end is connected the input terminus part of oxygen pipeline A.A concrete end is connected on second strainer 16 and the pipeline between second repid cut-off valve 13 on the nitrogen pipeline B through the threeway (not shown), and an end is connected on first strainer and pipe 15 roads between 2 first repid cut-off valves 3 on the oxygen pipeline through the threeway (not shown).And target being set at the output terminal of oxygen pipeline, target is with blank sheet of paper or calico.When removing in the oxygen pipeline residue, make the pressure on the nitrogen pipeline be 1.4～1.6 times of just often WP, the valve of opening on the scavenging pipeline is a stopping valve 16; Utilize the nitrogen purge oxygen pipeline repeatedly that has elevated pressures on the nitrogen pipeline; Each 15～25 minutes,, stop to purge up to the target free from smutting during that system's output terminal is provided with; And the stopping valve 16 on the stopping valve 51 that closes the output terminal on the closed oxygen pipeline and the scavenging pipeline; Make said system lock, system lock makes the nitrogen that is full of 1.4～1.6 times of WPs in the oxygen pipeline, and pressurize 1～2 day; During the oxygen blast system works, the stopping valve 16 on the shut-down purge pipeline, and open source of oxygen and oxygen rifle, oxygen imports oxygen pipeline through nitrogen balance.When oxygen pipeline being purged by means of the nitrogen of nitrogen pipeline; Oxygen pipeline to cleaning is filled nitrogen; The nitrogen that when the oxygen pipe network is formally cured by oxygen therapy, is full of like this will guide gas (simultaneously also to there being the oxygen of pressure to carry out balance) that pipe network is purged once more as pipe network, thereby guarantee oxygen therapy safety.
Claims (8)
1. steel-making converter top blowing oxygen system; Comprise at least one oxygen pipeline and at least one nitrogen pipeline; It is characterized in that each said oxygen pipeline comprises person in charge's valve of being connected successively by pipeline, first strainer, first repid cut-off valve, pressure regulator valve group, one group of regulating valve group or more than two groups and two groups and the regulating valve group that connects, one group of check valve set or more than two groups or two groups and the check valve set that connects, make oxygen pipeline have an input terminus or two or two above output terminals; Each said nitrogen pipeline comprises person in charge's valve of being connected successively by pipeline, second strainer, second repid cut-off valve, the first by-pass and pressure regulator valve group, teletransmission tensimeter, the second by-pass and pressure regulator valve group, manually diffuses valve, one group of repid cut-off valve group or more than two groups or two groups and the repid cut-off valve group that connects, and makes nitrogen pipeline have an input terminus or two or two above output terminals.
2. steel-making converter top blowing oxygen according to claim 1 system is characterized in that said pressure regulator valve group is to connect first pressure regulator valve and the first remote transfer signal tensimeter successively by pipeline and form.
3. steel-making converter top blowing oxygen according to claim 1 system is characterized in that said regulating valve group is to connect second stopping valve, first-class scale, regulating valve, the 3rd stopping valve successively by pipeline and form.
4. steel-making converter top blowing oxygen according to claim 1 system is characterized in that said check valve set is to be connected the 4th stopping valve, the 3rd repid cut-off valve, the second remote transfer signal tensimeter and vacuum breaker successively and formed by pipeline.
5. steel-making converter top blowing oxygen according to claim 1 system is characterized in that said pressure regulator valve group connects the 5th stopping valve, second pressure regulator valve and the 6th stopping valve branch road that forms and the 7th stopping valve that is connected to these branch road two ends successively by pipeline and forms.
6. steel-making converter top blowing oxygen according to claim 1 system is characterized in that said repid cut-off valve group is to connect the 4th repid cut-off valve and the 7th stopping valve successively by pipeline and form.
7. remove and the oxygen introduction method like the residue of the said top blowing oxygen of claim 1-6 system, it is characterized in that adopting an end to be connected in a scavenging pipeline of nitrogen pipeline, the other end of this scavenging pipeline is connected the input terminus part of oxygen pipeline; And target being set at the said output terminal of oxygen pipeline, said scavenging pipeline comprises pipeline and is arranged on the valve on this pipeline, when removing on the oxygen pipeline residue; Making pressure on the nitrogen pipeline is 1.4～1.6 times of WP; Open the stopping valve on the scavenging pipeline, utilize the nitrogen several times purge oxygen pipeline that has certain pressure on the nitrogen pipeline, each 15～25 minutes; Target free from smutting during up to system's output terminal setting; Stop to purge, said output terminal on the closed oxygen pipeline and the stopping valve on the scavenging pipeline make said system lock; Be full of the nitrogen of 1.4～1.6 times of WPs in the oxygen pipeline, and pressurize 1～2 day; During the oxygen blast system works, the valve on the shut-down purge pipeline or the said scavenging pipeline of dismantling, and open source of oxygen, oxygen imports oxygen pipeline through nitrogen balance.
8. the residue of top blowing oxygen according to claim 7 system is removed and the oxygen introduction method; It is characterized in that said scavenging pipeline one end is connected on first strainer and the pipeline between first repid cut-off valve on the said oxygen pipeline through threeway, an end is connected on second strainer and the pipeline between second repid cut-off valve on the nitrogen pipeline through threeway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210165648.5A CN102660660B (en) | 2012-05-25 | 2012-05-25 | Oxygen top-blowing control system of steel converter and system residue removing and oxygen guiding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210165648.5A CN102660660B (en) | 2012-05-25 | 2012-05-25 | Oxygen top-blowing control system of steel converter and system residue removing and oxygen guiding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102660660A true CN102660660A (en) | 2012-09-12 |
| CN102660660B CN102660660B (en) | 2014-03-26 |
Family
ID=46770235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210165648.5A Active CN102660660B (en) | 2012-05-25 | 2012-05-25 | Oxygen top-blowing control system of steel converter and system residue removing and oxygen guiding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102660660B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344307A (en) * | 2018-03-20 | 2018-07-31 | 马鞍山钢铁股份有限公司 | A kind of revolving furnace fume hood accumulated slag method for cleaning and revolving furnace fume hood accumulated slag clear up rifle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1552919A (en) * | 2003-05-29 | 2004-12-08 | 宝山钢铁股份有限公司 | Converter oxide and nitrogen top-blown dephosphorizing method |
| CN201440039U (en) * | 2009-07-10 | 2010-04-21 | 武汉钢铁(集团)公司 | Novel oxygen lance for secondary refining |
| CN102392096A (en) * | 2011-12-05 | 2012-03-28 | 济南钢铁股份有限公司 | Self-adapting oxygen flow rate controlling system used in automatic steelmaking converter |
| CN202595179U (en) * | 2012-05-25 | 2012-12-12 | 江苏英特泵阀制造有限公司 | Top oxygen blowing system of steel-making converter |
-
2012
- 2012-05-25 CN CN201210165648.5A patent/CN102660660B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1552919A (en) * | 2003-05-29 | 2004-12-08 | 宝山钢铁股份有限公司 | Converter oxide and nitrogen top-blown dephosphorizing method |
| CN201440039U (en) * | 2009-07-10 | 2010-04-21 | 武汉钢铁(集团)公司 | Novel oxygen lance for secondary refining |
| CN102392096A (en) * | 2011-12-05 | 2012-03-28 | 济南钢铁股份有限公司 | Self-adapting oxygen flow rate controlling system used in automatic steelmaking converter |
| CN202595179U (en) * | 2012-05-25 | 2012-12-12 | 江苏英特泵阀制造有限公司 | Top oxygen blowing system of steel-making converter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344307A (en) * | 2018-03-20 | 2018-07-31 | 马鞍山钢铁股份有限公司 | A kind of revolving furnace fume hood accumulated slag method for cleaning and revolving furnace fume hood accumulated slag clear up rifle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102660660B (en) | 2014-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202595179U (en) | Top oxygen blowing system of steel-making converter | |
| CN202885874U (en) | Coal gas flow measuring device with functions of blowing and discharging pollution | |
| CN102909199A (en) | Pipeline hydraulic cleaning device | |
| CN107385138A (en) | A kind of method for improving coal gas of converter pipe network system and protecting energy supply power | |
| CN102660660B (en) | Oxygen top-blowing control system of steel converter and system residue removing and oxygen guiding method | |
| CN202893752U (en) | Hydraulic cleaning device for pipelines | |
| CN106481983B (en) | Urban gate station Gas Pressure Regulating Equipment | |
| CN106764434A (en) | A kind of novel nitrogen feed system | |
| CN107629807B (en) | Circulating ammonia water pipeline and method for replacing circulating ammonia water valve of coke oven without stopping production | |
| CN110643771A (en) | Method for efficiently driving coal gas of blast furnace hot blast stove coal gas system | |
| CN202303372U (en) | Explosion-proof type combustor valve system | |
| CN102563201A (en) | Device for eliminating leakage risk of gas gate valve online | |
| CN211199258U (en) | Blast furnace top charging bucket pressure-equalizing coal gas full-recovery system | |
| CN211575140U (en) | Liquid discharge control system for pilot lamp | |
| CN211079209U (en) | Auxiliary pressure equalizing and coal gas replacing device for blast furnace charging bucket | |
| CN112325140A (en) | Double-line centralized lubricating system for coke oven exchange system | |
| CN110069889A (en) | A kind of diesel hydrotreating unit stripper steam adaptation method based on way of escape measuring and calculating | |
| CN205102159U (en) | Boiler fuel leak test shunting device | |
| CN204609962U (en) | The lubricating oil station system of a kind of blower fan or steam turbine set | |
| CN108204525B (en) | The device and method of leak cooler safe operation in a kind of maintenance | |
| CN105179223B (en) | The mechanical sealing assembly identification systems of main reactor pump | |
| CN216666078U (en) | Take filtering capability's valve bank of repairing a well | |
| CN218820308U (en) | Nitrogen gas replacement pipeline device for combustion boiler | |
| CN205550025U (en) | A additive distribution injection apparatus for SNCR flue gas denitration system | |
| CN204612361U (en) | The recovery system of the unnecessary nitrogen of fractionating column in oxygen generating plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Top blowing oxygen system and system residue removal and oxygen introduction method for steelmaking converter Effective date of registration: 20230803 Granted publication date: 20140326 Pledgee: Bank of Jiangsu Co.,Ltd. Taizhou Branch Pledgor: JIANGSU YINGTE PUMP & VALVE MANUFACTURING CO.,LTD. Registration number: Y2023980050663 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |