CN203174123U - Coke oven gas blowing system of blast furnace - Google Patents
Coke oven gas blowing system of blast furnace Download PDFInfo
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- 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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- oven gas
- blast furnace
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- coke
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Abstract
The utility model provides a coke oven gas blowing system of a blast furnace. The coke oven gas blowing system is formed by a coke oven gas conveying system, a high-pressure nitrogen security system, a metering detection system, a coke oven gas blowing system and a computer control system. A coal gas compressor is used for enabling coke oven gas pressurized to process authorized pressure to pass through the coke oven gas conveying system and the metering detection system and then enter a coal gas annular pipe; and then the coal gas enters a spraying gun through each spraying branch pipe at the inner side of the coal gas annular pipe, an opened branch pipe manual cutting-off valve and an opened branch pipe pneumatic cutting-off valve and then is sprayed into a blast furnace tuyere through the spraying gun. According to the coke oven gas blowing system provided by the utility model, the furnace charging carbon amount can be reduced, the emission amount of CO2 of the blast furnace is greatly reduced and the environmental pollution is reduced; and the consumption of fuel can be effectively reduced and the smelting cost is reduced. Meanwhile, the combustion of coal powder can be promoted, the air ventilation 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)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320139565 CN203174123U (en) | 2013-03-26 | 2013-03-26 | Coke oven gas blowing system of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320139565 CN203174123U (en) | 2013-03-26 | 2013-03-26 | Coke oven gas blowing system of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203174123U true CN203174123U (en) | 2013-09-04 |
Family
ID=49070854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320139565 Expired - Fee Related CN203174123U (en) | 2013-03-26 | 2013-03-26 | Coke oven gas blowing system of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203174123U (en) |
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 | System and method for injecting coke oven gas into blast furnace |
| 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 | System and method for injecting coke oven gas into blast furnace |
| 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 |
|---|---|---|---|
| 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 |