CN203174123U - Blast furnace injection coke oven gas system - Google Patents
Blast furnace injection coke oven gas system Download PDFInfo
- Publication number
- CN203174123U CN203174123U CN 201320139565 CN201320139565U CN203174123U CN 203174123 U CN203174123 U CN 203174123U CN 201320139565 CN201320139565 CN 201320139565 CN 201320139565 U CN201320139565 U CN 201320139565U CN 203174123 U CN203174123 U CN 203174123U
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- Prior art keywords
- valve
- gas
- blast furnace
- oven gas
- coke
- 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.)
- Expired - Fee Related
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- 238000002347 injection Methods 0.000 title claims abstract description 10
- 239000007924 injection Substances 0.000 title claims abstract description 10
- 239000000571 coke Substances 0.000 title abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 63
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 15
- 239000003034 coal gas Substances 0.000 claims description 14
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 8
- 239000003063 flame retardant Substances 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 230000002829 reductive effect Effects 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 4
- 238000003723 Smelting Methods 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- -1 uses.In various fuel Chemical compound 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Coke Industry (AREA)
Abstract
The utility model provides a blast furnace jetting coke oven gas system, which comprises a coke oven gas conveying system, a high-pressure nitrogen security system, a metering detection system, a coke oven gas jetting system and a computer control system. The gas compressor makes coke oven gas pressurized to the pressure specified by the process enter the gas ring pipe through the coke oven gas conveying system and the metering detection system, and then enters the spray gun through each injection branch pipe arranged on the inner side of the gas ring pipe, the opened manual branch pipe cut-off valve and the opened pneumatic branch pipe cut-off valve, and the gas is injected into the tuyere of the blast furnace through the spray gun. The utility model not only canReduce the carbon amount in the furnace and greatly reduce the CO of the blast furnace2The discharge amount is reduced, and the environmental pollution is reduced; but also can effectively reduce fuel consumption and smelting cost. Meanwhile, the combustion of the pulverized coal can be promoted, the air permeability of the lower part of the blast furnace is improved, and the production efficiency of the blast furnace is improved.
Description
Technical field
The utility model belongs to the iron-smelting process technical field, relates in particular to a kind of blast furnace carbon emission that reduces, and improves the blast furnace blowing coke-oven gas system of blast furnace production efficiency.
Background technology
The used energy of Iron and Steel Production mainly contains coking coal, steam coal, oil fuel and Sweet natural gas etc., is coke, electric power, geseous fuel and steam etc. and process for producing steel and iron mainly uses.In various fuel, the easiest control of burning of geseous fuel, thermo-efficiency is also the highest, is fuel most popular in the Steel Plant.In steel manufacture process, the fuel consumption cost accounts for about 41% of total cost.The production plant of iron and steel enterprise all uses the different geseous fuel of various calorific values basically, so geseous fuel occupies extremely important status in the thermal equilibrium of Iron and Steel Production.
Coke-oven gas is used very extensive in iron and steel enterprise as a kind of coke by-products of high heating value, be mainly used in process furnace, roasting kiln, ignition furnace, steel billet cutting, anti-material baking etc. at present.Contain the hydrogen of 50%-60%, about 30% methane and other hydrocarbon polymer in the coke-oven gas, and less than 10% CO and small amount of N
2Deng.Hydrogen is a kind of reductive agent of high-quality.If mainly be H with the ultimate constituent behind the coke-oven gas spirt blast furnace
2, can utilize H
2Replace the carbon in the coke.H
2As reductive agent, with C and CO relatively be a kind of reductive agent of high-quality, have the fast and consumption of calorie of reduction rate advantage such as less, be conducive to improve blast furnace production efficiency.
Summary of the invention
The purpose of this utility model aim to provide a kind of can with coke-oven gas safety be blown into blast furnace from the air port, thereby improve blast furnace production efficiency, reduce the CO of blast furnace
2The blast furnace blowing coke-oven gas system of quantity discharged and fuel consumption.
For this reason, the solution taked of the utility model is:
A kind of blast furnace blowing coke-oven gas system is made up of coke-oven gas delivery system, high pressure nitrogen security system, measurement detection system, coke-oven gas injection system and computer control system;
The coke-oven gas delivery system comprises injecting station, gas-holder, hand off butterfly valve, electromagnetic pneumatic trip valve, flame-retardant device, air valve formula reverse checkvalve and gas line;
The high pressure nitrogen security system comprises hand off valve, electromagnetic pneumatic trip valve and nitrogen tube;
Measurement detection system comprises pressure detection instrument, flow instrumentation, temperature instrument and pressure regulator valve;
The coke-oven gas injection system comprises coal gas endless tube, winding-up arm, arm hand off valve, arm pneumatic cut-off valve and spray gun;
Computer control system comprises PLC and monitoring, operation screen;
Gas compressor in the injecting station connects gas-holder successively by gas line, the hand off butterfly valve, the electromagnetic pneumatic trip valve, flame-retardant device and air valve formula reverse checkvalve, air valve formula reverse checkvalve is by the pressure detection instrument, flow instrumentation, temperature instrument and pressure regulator valve shack are around the coal gas endless tube of outside, blast furnace hearth air port, coal gas endless tube inboard is evenly equipped with some winding-up arms, be respectively equipped with arm hand off valve and arm pneumatic cut-off valve on the winding-up arm, winding-up arm front end has spray gun, and the spray gun body of a gun is inserted in the blast tube side opening that links to each other with the blast furnace hearth air port;
Gas line between air valve formula reverse checkvalve and pressure detection instrument is connected with a nitrogen tube, and nitrogen tube is connected on the high pressure nitrogen pipeline by hand off valve and electromagnetic pneumatic trip valve;
Gas compressor, pressure detection instrument, flow instrumentation, temperature instrument, pressure regulator valve and all pneumatic cut-off valves, pressure regulator valve all are connected with PLC.
The beneficial effects of the utility model are:
1, can realize safely coke-oven gas is blown into blast furnace from the air port, not only reduce and go into stove carbon amount, and can reduce the CO of blast furnace significantly
2Quantity discharged reduces environmental pollution.
2, coke-oven gas contains the H of 50%-60%
2, have advantages such as the fast and consumption of calorie of reduction rate is few, can effectively reduce fuel consumption, the reduction smelting cost.
3, can promote the raising of coal combustion rate, improve the ventilation property of bottom house, be conducive to improve the production efficiency of blast furnace.
Description of drawings
Fig. 1 is blast furnace blowing coke-oven gas system architecture synoptic diagram.
Fig. 2 installs coal gas endless tube position schematic cross-section for blast furnace.
Among the figure: injecting station 1, gas-holder 2, hand off butterfly valve 3, electromagnetic pneumatic trip valve I 4, gas line 5, flame-retardant device 6, air valve formula reverse checkvalve 7, pressure detection instrument 8, flow instrumentation 9, temperature instrument 10, pressure regulator valve 11, blast furnace 12, hand off valve 13, electromagnetic pneumatic trip valve II 14, nitrogen tube 15, coal gas endless tube 16, winding-up arm 17, arm hand off valve 18, arm pneumatic cut-off valve 19, spray gun 20, blast tube 21.
Embodiment
By accompanying drawing as seen, the utility model blast furnace blowing coke-oven gas system mainly is made up of coke-oven gas delivery system, high pressure nitrogen security system, measurement detection system, coke-oven gas injection system and computer control system five parts.
The coke-oven gas delivery system comprises injecting station 1, gas-holder 2, hand off butterfly valve 3, electromagnetic pneumatic trip valve I 4, gas line 5, flame-retardant device 6, air valve formula reverse checkvalve 7, and injecting station 1 is responsible for net with coke-oven gas and is connected, and injecting station 1 is provided with gas compressor.
The high pressure nitrogen security system comprises hand off valve 13, electromagnetic pneumatic trip valve II 14 and nitrogen tube 15.
Measurement detection system comprises pressure detection instrument 8, flow instrumentation 9, temperature instrument 10, pressure regulator valve 11.
The coke-oven gas injection system comprises coal gas endless tube 16, winding-up arm 17, arm hand off valve 18, arm pneumatic cut-off valve 19, spray gun 20 and blast furnace hearth blast tube 21.
Computer control system comprises PLC and monitoring, operation screen.
Gas compressor in the injecting station 1 connects gas-holder 2, hand off butterfly valve 3, electromagnetic pneumatic trip valve I 4, flame-retardant device 6 and air valve formula reverse checkvalve 7 successively by gas line 5, air valve formula reverse checkvalve 7 connects coal gas endless tube 16 by pressure detection instrument 8, flow instrumentation 9, temperature instrument 10 and pressure regulator valve 11, and coal gas endless tube 16 is around the outside, cupola well air port that is installed in blast furnace 12.Evenly be installed on 36 winding-up arms 17 in the inboard of coal gas endless tube 16, on the every winding-up arm 17 arm hand off valve 18 and arm pneumatic cut-off valve 19 are housed all, the front end of winding-up arm 17 has spray gun 20, and the body of a gun of spray gun 20 is inserted in the side opening of the blast tube 21 that links to each other with blast furnace 12 cupola well air ports.
For guaranteeing operation and device security, a nitrogen tube 15 also is installed on the gas line 5 between air valve formula reverse checkvalve 7 and the pressure detection instrument 8, be respectively equipped with hand off valve 13 and electromagnetic pneumatic trip valve II 14 on the nitrogen tube 15, the other end of nitrogen tube 15 is connected on the high pressure nitrogen pipeline.
Electromagnetic pneumatic trip valve I 4, air valve formula reverse checkvalve 7, pressure detection instrument 8, flow instrumentation 9, temperature instrument 10, pressure regulator valve 11, electromagnetic pneumatic trip valve II 14, arm pneumatic cut-off valve 19 and gas compressor are connected with PLC respectively.
Winding-up process of the present utility model and concrete steps are:
After the coke-oven gas delivery system will be responsible for coke-oven gas that net comes and be forced into the pressure of process stipulation by the gas compressor in the injecting station 1, send into coke-oven gas gas-holder 2 and gas line 5, when manually opening hand off butterfly valve 3, PLC opens electromagnetic pneumatic trip valve I 4, coke-oven gas is via flame-retardant device 6, air valve formula reverse checkvalve 7, pressure detection instrument 8, flow instrumentation 9, temperature instrument 10 is delivered to pressure regulator valve 11, pressure regulator valve 11 is opened set angle automatically according to setting pressure, make coke-oven gas enter coal gas endless tube 16, via the arm hand off valve 18 of respectively jetting arm 17 and opening of being located at coal gas endless tube 16 inboards, arm pneumatic cut-off valve 19 enters spray gun 20, spray into by spray gun 20 in the air port of blast furnace 12, thereby realize the operation of winding-up coke-oven gas.
High pressure nitrogen security system and coke-oven gas terminal pressure are chain, and the hand off valve 13 on the nitrogen tube 15 is often opened.Carry when coke-oven gas pressure is lower than set(ting)value or coke-oven gas, when injection system breaks down, PLC controls the high pressure nitrogen security system automatically and starts, the electromagnetic pneumatic trip valve II 14 on the nitrogen tube 15 is opened, and makes injection system feed high pressure nitrogen and ensures public security.
Claims (1)
1. a blast furnace blowing coke-oven gas system is characterized in that, is made up of coke-oven gas delivery system, high pressure nitrogen security system, measurement detection system, coke-oven gas injection system and computer control system;
The coke-oven gas delivery system comprises injecting station, gas-holder, hand off butterfly valve, electromagnetic pneumatic trip valve, flame-retardant device, air valve formula reverse checkvalve and gas line;
The high pressure nitrogen security system comprises hand off valve, electromagnetic pneumatic trip valve and nitrogen tube;
Measurement detection system comprises pressure detection instrument, flow instrumentation, temperature instrument and pressure regulator valve;
The coke-oven gas injection system comprises coal gas endless tube, winding-up arm, arm hand off valve, arm pneumatic cut-off valve and spray gun;
Computer control system comprises PLC and monitoring, operation screen;
Gas compressor in the injecting station connects gas-holder successively by gas line, the hand off butterfly valve, the electromagnetic pneumatic trip valve, flame-retardant device and air valve formula reverse checkvalve, air valve formula reverse checkvalve is by the pressure detection instrument, flow instrumentation, temperature instrument and pressure regulator valve shack are around the coal gas endless tube of outside, blast furnace hearth air port, coal gas endless tube inboard is evenly equipped with some winding-up arms, be respectively equipped with arm hand off valve and arm pneumatic cut-off valve on the winding-up arm, winding-up arm front end has spray gun, and the spray gun body of a gun is inserted in the blast tube side opening that links to each other with the blast furnace hearth air port;
Gas line between air valve formula reverse checkvalve and pressure detection instrument is connected with a nitrogen tube, and nitrogen tube is connected on the high pressure nitrogen pipeline by hand off valve and electromagnetic pneumatic trip valve;
Gas compressor, pressure detection instrument, flow instrumentation, temperature instrument, pressure regulator valve and all pneumatic cut-off valves, pressure regulator valve all are connected with PLC.
Priority Applications (1)
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CN 201320139565 CN203174123U (en) | 2013-03-26 | 2013-03-26 | Blast furnace injection coke oven gas system |
Applications Claiming Priority (1)
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CN 201320139565 CN203174123U (en) | 2013-03-26 | 2013-03-26 | Blast furnace injection coke oven gas system |
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CN203174123U true CN203174123U (en) | 2013-09-04 |
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ID=49070854
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CN 201320139565 Expired - Fee Related CN203174123U (en) | 2013-03-26 | 2013-03-26 | Blast furnace injection coke oven gas system |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103205515A (en) * | 2013-03-26 | 2013-07-17 | 鞍钢股份有限公司 | Blast furnace coke oven gas injection system and method thereof |
CN109492296A (en) * | 2018-11-06 | 2019-03-19 | 首钢集团有限公司 | It is a kind of for characterizing the method and system of coke dry quenching furnace gas permeability |
CN112410488A (en) * | 2020-09-28 | 2021-02-26 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Automatic nitrogen adjustment control method for nitrogen cooling type blast furnace distributor |
CN114369692A (en) * | 2022-01-12 | 2022-04-19 | 新疆八一钢铁股份有限公司 | Blast furnace coal gas injection control system and control method |
-
2013
- 2013-03-26 CN CN 201320139565 patent/CN203174123U/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103205515A (en) * | 2013-03-26 | 2013-07-17 | 鞍钢股份有限公司 | Blast furnace coke oven gas injection system and method thereof |
CN109492296A (en) * | 2018-11-06 | 2019-03-19 | 首钢集团有限公司 | It is a kind of for characterizing the method and system of coke dry quenching furnace gas permeability |
CN112410488A (en) * | 2020-09-28 | 2021-02-26 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Automatic nitrogen adjustment control method for nitrogen cooling type blast furnace distributor |
CN114369692A (en) * | 2022-01-12 | 2022-04-19 | 新疆八一钢铁股份有限公司 | Blast furnace coal gas injection control system and control method |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20190326 |