CN203728859U - Oxygen supply device arranged in front of blast furnace blower - Google Patents
Oxygen supply device arranged in front of blast furnace blower Download PDFInfo
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- CN203728859U CN203728859U CN201420119760.XU CN201420119760U CN203728859U CN 203728859 U CN203728859 U CN 203728859U CN 201420119760 U CN201420119760 U CN 201420119760U CN 203728859 U CN203728859 U CN 203728859U
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- oxygen
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Abstract
The utility model discloses an oxygen supply device arranged in front of a blast furnace blower. The oxygen supply device comprises an air pipeline, an oxygen pipeline and a nitrogen pipeline, wherein an oxygen-air mixer is arranged on the air pipeline, the oxygen-air mixer is arranged at the front end of the blower, a mixing air pipeline oxygen analyzer is arranged on an air pipeline between the oxygen-air mixer and the blower, and a gas outlet of the oxygen pipeline is communicated with the oxygen-air mixer; the gas outlet of the nitrogen pipeline is communicated with the oxygen pipeline, an oxygen butterfly valve, an oxygen analyzer, an oxygen inlet rapid cut-off valve and an oxygen flow control valve are arranged on the oxygen pipeline in sequence, and a nitrogen stop valve, a nitrogen quick-opening valve and a nitrogen check valve are arranged on the nitrogen pipeline in sequence. The oxygen supply device arranged in front of the blast furnace blower has the benefits that the cost is reduced, any damage to the blower can be avoided, and the good energy saving effect can be realized.
Description
Technical field
The utility model relates to a kind of apparatus of oxygen supply, particularly apparatus of oxygen supply before a kind of stove blower.
Background technology
Oxygen enriched blast is in blast furnace, to add industrial oxygen, makes air blast oxygen level surpass atmosphere oxygen level, and it is a kind of technical measures of strengthening smelting.Oxygen enriched blast can improve temperature of combustion, conventionally oxygen oxygen level improves 1%, can improve 45～50 ℃ of temperature of combustion, be conducive to improve blast furnace hearth temperature, and improve Coal Injection Amount into BF, reduce theoretical combustion temperature, by rule of thumb data statistics, coal injection is by 10 kilograms of coal dusts of winding-up, and theoretical combustion temperature reduces by 30～25 ℃.Therefore, coal powder injection just in time has complementarity with oxygen enriched blast to the impact of blast-furnace smelting, and rich-oxygen of blast furnace air blast is the strong guarantee condition that improves Coal Injection Rate at BF.
At present, oxygen enrichment after the long flow process smelter of overwhelming majority rich-oxygen of blast furnace air blast employing machine, oxygen accesses from blast furnace blowing engine outlet cold air duct.Shortcoming is that oxygen needs pressurization, and general cold air duct pressure is at 0.3-0.5MPa, so oxygen pressure will be higher than 0.5MPa, energy consumption is larger.
Summary of the invention
The purpose of this utility model is apparatus of oxygen supply before a kind of stove blower of providing compared with large problem of the energy consumption in order to solve oxygen enrichment after existing smelter rich-oxygen of blast furnace air blast employing machine and to produce.
Before stove blower described in the utility model, apparatus of oxygen supply includes air line, oxygen channel and nitrogen pipeline, wherein air line is provided with oxygen air mixer, oxygen air mixer is located at the front end of gas blower, air line between oxygen air mixer and gas blower is provided with mixing air pipeline oxygen analyzer, the air outlet of oxygen channel is connected with oxygen air mixer, the air outlet of nitrogen pipeline is connected with oxygen channel, on oxygen channel, be provided with successively oxygen butterfly valve, oxygen analyzer, oxygen intake is cut valve and oxygen flow rate adjusting valve soon, oxygen analyzer and oxygen intake are cut soon on the oxygen channel between valve and are communicated with vapor pipe, this vapor pipe is provided with oxygen and diffuses quick-opening valve, oxygen diffuses quick-opening valve and cuts soon valve with oxygen intake and interlock mutually, on nitrogen pipeline, be provided with successively nitrogen stopping valve, nitrogen quick-opening valve and nitrogen vacuum breaker.
The ingress of air line is connected with air filter.
The material of air line is carbon steel, and the material of air line and oxygen channel junction is stainless steel.
Oxygen channel is the carbon steel pipe of de-oiling skimming treatment.
Nitrogen pipeline is carbon steel weldless steel tube, with oxygen channel junction be stainless steel tube.
Principle of work of the present utility model:
Oxygen is entering oxygen air mixer after oxygen butterfly valve, oxygen analyzer, oxygen intake are cut valve and oxygen flow rate adjusting valve soon in oxygen channel, oxygen enters air line after the full and uniform mixing of oxygen air mixer.Oxygen analyzer and oxygen intake are cut soon on the oxygen channel between valve and are communicated with vapor pipe, and this vapor pipe is provided with oxygen and diffuses quick-opening valve, and oxygen can diffuse quick-opening valve emptying through oxygen.
During oxygen regular supply, oxygen butterfly valve standard-sized sheet, oxygen flux control is the signal control oxygen flow rate adjusting valve transmitting according to blast furnace master control room, and oxygen intake is cut soon valve and is opened, and oxygen diffuses quick-opening valve and closes.When there is accident, for example: gas blower shutdown, surge, while catching fire, oxygen intake is cut soon valve and closed in 1s, diffuses quick-opening valve interlocking simultaneously open soon with oxygen, diffuses, and then close oxygen butterfly valve, examination and repair system for oxygen.
Nitrogen is passed in oxygen channel through nitrogen stopping valve, nitrogen quick-opening valve and nitrogen vacuum breaker in nitrogen pipeline, during nitrogen regular supply, and nitrogen stopping valve standard-sized sheet, nitrogen quick-opening valve closes.When there is accident, nitrogen quick-opening valve is opened in 1s, promptly fills nitrogen security personnel.When nitrogen system pressure is low, nitrogen vacuum breaker can effectively guarantee that oxygen does not blow back in nitrogen pipeline.
Air enters oxygen air mixer after air filter, after full and uniform mixing, after mixing air pipeline oxygen analyzer detects, enters gas blower.
Equipment on air line described in the utility model, oxygen channel and nitrogen pipeline is the assembling of existing installation, and therefore concrete model and specification further do not repeat.
The beneficial effects of the utility model:
1, before machine, oxygen enrichment is compared with oxygen enrichment after machine, the energy consumption of saving is mainly power consumption, after machine, oxygen enrichment oxygen pressure is greater than 0.5MPa, before machine, oxygen enrichment oxygen approaches normal pressure, the electric weight of oxygen compressor consumption is about 0.12kwh/Nm3, if by oxygen enrichment percentage 3%, for large blast furnace ton iron, consume oxygen and be about 56Nm3, before machine, oxygen enrichment is compared the ferroelectric amount of ton and is saved 6.72kwh with oxygen enrichment after machine, if unit electricity price is by 0.5 yuan, ton iron cost declines 3.36 yuan, for a TECHNIQUE TO LARGE INTEGRATED STEEL WORKS of producing 5000000 tons per year, if oxygen enriched blast all adopts the front oxygen enrichment of machine, year production cost can decline 1,680 ten thousand yuan,
2, oxygen mixes before entering gas blower, can not cause any infringement to gas blower;
3, by oxygen enrichment technology before machine, greatly reduce production link, reduce energy consumption, realize good energy-saving effect.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
1, air line 2, oxygen channel 3, nitrogen pipeline 4, oxygen air mixer
5, gas blower 6, mixing air pipeline oxygen analyzer 7, air filter
21, oxygen butterfly valve 22, oxygen analyzer 23, oxygen intake are cut valve soon
24, oxygen flow rate adjusting valve 25, vapor pipe 26, oxygen diffuse quick-opening valve
31, nitrogen stopping valve 32, nitrogen quick-opening valve 33, nitrogen vacuum breaker.
Embodiment
Refer to shown in Fig. 1:
Before stove blower described in the utility model, apparatus of oxygen supply includes air line 1, oxygen channel 2 and nitrogen pipeline 3, wherein air line 1 is provided with oxygen air mixer 4, oxygen air mixer 4 is located at the front end of gas blower 5, air line 1 between oxygen air mixer 4 and gas blower 5 is provided with mixing air pipeline oxygen analyzer 6, the air outlet of oxygen channel 2 is connected with oxygen air mixer 4, the air outlet of nitrogen pipeline 3 is connected with oxygen channel 2, on oxygen channel 2, be provided with successively oxygen butterfly valve 21, oxygen analyzer 22, oxygen intake is cut valve 23 and oxygen flow rate adjusting valve 24 soon, oxygen analyzer 22 and oxygen intake are cut soon on the oxygen channel 2 between valve 23 and are communicated with vapor pipe 25, this vapor pipe 25 is provided with oxygen and diffuses quick-opening valve 26, oxygen diffuses quick-opening valve 26 and cuts soon valve 23 with oxygen intake and interlock mutually, on nitrogen pipeline 3, be provided with successively nitrogen stopping valve 31, nitrogen quick-opening valve 32 and nitrogen vacuum breaker 33.
The ingress of air line 1 is connected with air filter 7.
The material of air line 1 is carbon steel, and air line 1 is stainless steel with the material of oxygen channel 2 junctions.
Oxygen channel 2 is the carbon steel pipe of de-oiling skimming treatment.
Nitrogen pipeline 3 is carbon steel weldless steel tube, with oxygen channel 2 junctions be stainless steel tube.
Principle of work of the present utility model:
Oxygen enters oxygen air mixer 4 oxygen channel 1 is interior after oxygen butterfly valve 21, oxygen analyzer 22, oxygen intake are cut valve 23 and oxygen flow rate adjusting valve 24 soon, and oxygen enters air line 1 after the full and uniform mixing of oxygen air mixer 4.Oxygen analyzer 22 and oxygen intake are cut soon on the oxygen channel 2 between valve 23 and are communicated with vapor pipe 25, and this vapor pipe 25 is provided with oxygen and diffuses quick-opening valve 26, and oxygen can diffuse quick-opening valve 26 emptying through oxygen.
During oxygen regular supply, oxygen butterfly valve 21 standard-sized sheets, oxygen flux control is the signal control oxygen flow rate adjusting valve 24 transmitting according to blast furnace master control room, and oxygen intake is cut soon valve 23 and is opened, and oxygen diffuses quick-opening valve 26 and closes.When there is accident, for example: gas blower shutdown, surge, while catching fire, oxygen intake is cut soon valve 23 and closed in 1s, diffuses that quick-opening valve 26 is chain to be left soon simultaneously with oxygen, diffuses, and then close oxygen butterfly valve 21, examination and repair system for oxygen.
Nitrogen is passed in oxygen channel 2 at the interior process of nitrogen pipeline 3 nitrogen stopping valve 31, nitrogen quick-opening valve 32 and nitrogen vacuum breaker 33, during nitrogen regular supply, and nitrogen stopping valve 31 standard-sized sheets, nitrogen quick-opening valve 32 closes.When there is accident, nitrogen quick-opening valve 32 is opened in 1s, promptly fills nitrogen security personnel.When nitrogen system pressure is low, nitrogen vacuum breaker 33 can effectively guarantee that oxygen does not blow back in nitrogen pipeline 3.
Air enters oxygen air mixer 4 after air filter 7, after full and uniform mixing, after mixing air pipeline oxygen analyzer 6 detects, enters gas blower 5.
Equipment on air line 1 described in the utility model, oxygen channel 2 and nitrogen pipeline 3 is the assembling of existing installation, and therefore concrete model and specification further do not repeat.
Claims (5)
1. apparatus of oxygen supply before a stove blower, it is characterized in that: include air line, oxygen channel and nitrogen pipeline, wherein air line is provided with oxygen air mixer, oxygen air mixer is located at the front end of gas blower, air line between oxygen air mixer and gas blower is provided with mixing air pipeline oxygen analyzer, the air outlet of oxygen channel is connected with oxygen air mixer, the air outlet of nitrogen pipeline is connected with oxygen channel, on oxygen channel, be provided with successively oxygen butterfly valve, oxygen analyzer, oxygen intake is cut valve and oxygen flow rate adjusting valve soon, oxygen analyzer and oxygen intake are cut soon on the oxygen channel between valve and are communicated with vapor pipe, this vapor pipe is provided with oxygen and diffuses quick-opening valve, oxygen diffuses quick-opening valve and cuts soon valve with oxygen intake and interlock mutually, on nitrogen pipeline, be provided with successively nitrogen stopping valve, nitrogen quick-opening valve and nitrogen vacuum breaker.
2. apparatus of oxygen supply before stove blower according to claim 1, is characterized in that: the ingress of described air line is connected with air filter.
3. apparatus of oxygen supply before stove blower according to claim 1, is characterized in that: the material of described air line is carbon steel, and the material of air line and oxygen channel junction is stainless steel.
4. apparatus of oxygen supply before stove blower according to claim 1, is characterized in that: described oxygen channel is the carbon steel pipe of de-oiling skimming treatment.
5. apparatus of oxygen supply before stove blower according to claim 1, is characterized in that: described nitrogen pipeline is carbon steel weldless steel tube, with oxygen channel junction be stainless steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119760.XU CN203728859U (en) | 2014-03-16 | 2014-03-16 | Oxygen supply device arranged in front of blast furnace blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119760.XU CN203728859U (en) | 2014-03-16 | 2014-03-16 | Oxygen supply device arranged in front of blast furnace blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203728859U true CN203728859U (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420119760.XU Expired - Fee Related CN203728859U (en) | 2014-03-16 | 2014-03-16 | Oxygen supply device arranged in front of blast furnace blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203728859U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106755669A (en) * | 2016-12-14 | 2017-05-31 | 四川德胜集团钒钛有限公司 | Machine oxygen enriching process before a kind of blast furnace |
| CN106755678A (en) * | 2016-12-14 | 2017-05-31 | 四川德胜集团钒钛有限公司 | Oxygen enrichment system before a kind of blast furnace machine |
| CN107354254A (en) * | 2017-07-31 | 2017-11-17 | 中冶华天南京电气工程技术有限公司 | Oxygen-enriched system and the control method of oxygen enrichment percentage before a kind of blast furnace machine |
| CN107955848A (en) * | 2017-12-27 | 2018-04-24 | 北京京诚科林环保科技有限公司 | Oxygen enrichment device in front of blast furnace |
| CN110331245A (en) * | 2019-08-05 | 2019-10-15 | 山西新泰钢铁有限公司 | Blast furnace taphole oxygen-enriching device |
-
2014
- 2014-03-16 CN CN201420119760.XU patent/CN203728859U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106755669A (en) * | 2016-12-14 | 2017-05-31 | 四川德胜集团钒钛有限公司 | Machine oxygen enriching process before a kind of blast furnace |
| CN106755678A (en) * | 2016-12-14 | 2017-05-31 | 四川德胜集团钒钛有限公司 | Oxygen enrichment system before a kind of blast furnace machine |
| CN107354254A (en) * | 2017-07-31 | 2017-11-17 | 中冶华天南京电气工程技术有限公司 | Oxygen-enriched system and the control method of oxygen enrichment percentage before a kind of blast furnace machine |
| CN107955848A (en) * | 2017-12-27 | 2018-04-24 | 北京京诚科林环保科技有限公司 | Oxygen enrichment device in front of blast furnace |
| CN107955848B (en) * | 2017-12-27 | 2024-03-01 | 北京京诚科林环保科技有限公司 | Oxygen enrichment device in front of blast furnace machine |
| CN110331245A (en) * | 2019-08-05 | 2019-10-15 | 山西新泰钢铁有限公司 | Blast furnace taphole oxygen-enriching device |
| CN110331245B (en) * | 2019-08-05 | 2024-04-16 | 山西新泰钢铁有限公司 | Oxygen-enriching device for blast furnace iron notch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20150316 |
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| EXPY | Termination of patent right or utility model |