CN202912975U - Process unit for jetting coke oven gas to blast furnace - Google Patents
Process unit for jetting coke oven gas to blast furnace Download PDFInfo
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- CN202912975U CN202912975U CN 201220593281 CN201220593281U CN202912975U CN 202912975 U CN202912975 U CN 202912975U CN 201220593281 CN201220593281 CN 201220593281 CN 201220593281 U CN201220593281 U CN 201220593281U CN 202912975 U CN202912975 U CN 202912975U
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- oven gas
- jetting
- coke oven
- blast furnace
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Abstract
The utility model relates to the field of coke oven gas application, and particularly relates to a process unit for jetting coke oven gas to a blast furnace. The process unit comprises a pressurizing unit and a jetting unit, and is characterized in that the jetting unit comprises a jetting main pipe connected with an outlet of a buffer tank, and the jetting main pipe is connected with a third manual butterfly valve, a first double-side stainless-steel metal hard seal pneumatic ball valve, a first manual ball valve, a metal corrugated plate fire arrestor, an air valve type check valve, a first pneumatic regulating valve and a jetting bustle pipe in sequence. The jetting bustle pipe is provided with a plurality of jetting branch pipes connected with an outer cavity of a dual-cavity spray rod through a second pneumatic regulating valve. Compared with the prior art, the process unit has the following advantages: the impact of the tar oil in coke oven gas on blast furnace jetting technology is eliminated, the use of a detarring device is avoided, the technological process is simple, the construction is convenient, and the operation is safe and reliable. Moreover, taking coke oven gas jetting speed of 20,000 Nm<3>/h as an example, the predicted annual economic benefit is about RMB 100,000,000 Yuan and about 650,000 tons of CO2 emission load is reduced annually.
Description
Technical field
The utility model relates to the coke-oven gas Application Areas, relates in particular to a kind of blast furnace blowing coke oven gas process unit.
Background technology
Copenhagen world climate changed greatly after the meeting in 2009, and low-carbon economy becomes rapidly the focus of global concern.Blast furnace is topmost energy depleter and CO in the ferrous metallurgy system
2Source of release on the basis of constantly improving traditional energy-saving and emission-reduction method (such as big coal injection and high wind-warm syndrome etc.), also needs the various new technologies of further Application and Development and new measure, such as blast furnace blowing coke oven gas, in order to improve constantly effects of energy saving and emission reduction.The composition of coke-oven gas mainly is hydrogen, is the high-quality reductive agent, has the fast and consumption of calorie of the reduction rate advantage such as less, is conducive to improve blast furnace production efficiency.And blast furnace to hold receptivity strong, the burnt benefit of the joint of coke-oven gas is obvious, less investment, devoid of risk have very high economic benefit and energy saving and emission reduction effects.
Early, abroad have and attempt blast furnace blowing coke oven gas, but the pressurization of coke-oven gas and security problems still exist.Because coke-oven gas detar device adopts the gac detar, granularity of activated carbon is 4mm～6mm, gac efflorescence after using, coke-oven gas is brought gac in the compressor housing into, affect the suction port of compressor operating mode, increase the systemic resistance loss, and then affect compressor and normally produce, failure rate is very high.Also there are simultaneously many potential safety hazards: fit badly such as trip valve, reverse checkvalve etc. on the winding-up pipeline, leak coal gas; Hot blast flows backwards in the blast furnace, easily sets off an explosion; Safety interlocking control is not in place etc.
Summary of the invention
The purpose of this utility model is to provide a kind of blast furnace blowing coke oven gas process unit, overcome the coal-tar middle oil impact on blast furnace blowing technique of coke-oven gas, cancellation detar device, technical process is simple, easy construction, reliable, increases economic efficiency and effects of energy saving and emission reduction.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of blast furnace blowing coke oven gas process unit, comprise pressurizing device and blowing device, described pressurizing device comprises compressor and pressure pipeline, total pipe network is directly linked to each other with compressor inlet with Hand-operated butterfly valve one by bidirectional cutting valve group, Pneumatic butterfly valve one by pressure pipeline, and compressor outlet links to each other with the surge tank entrance through reverse checkvalve one, Pneumatic butterfly valve two, two way seal blank-plate valve and Hand-operated butterfly valve two.
Described pressure pipeline is provided with coke oven gas discharge pipe one and nitrogen sparge tube one.
Described blowing device comprises the winding-up supervisor who links to each other with the surge tank outlet, winding-up supervisor links to each other with the end that Hand-operated butterfly valve three, two-sided stainless steel metal seal pneumatic ball valve one, manual ball valve one, the board-like spark arrester of wavy metal, valve vacuum breaker and pneumatic adjusting valve one firmly successively, and the other end of pneumatic adjusting valve one links to each other with the bustle pipe of jetting.
Described winding-up supervisor is provided with flow, temperature and pressure proofing unit and coke oven gas discharge pipe two and nitrogen sparge tube two, and nitrogen sparge tube two is provided with trip valve.
Described winding-up bustle pipe is provided with several winding-up arms, winding-up is provided with manual ball valve two on the arm successively, two-sided stainless steel metal firmly seals pneumatic ball valve two, reverse checkvalve two and pneumatic adjusting valve two and links to each other, and the pneumatic adjusting valve two-way is crossed high pressure wire braided hose and is connected with the cooling chamber of two-chamber spray gun.
Described winding-up arm is provided with flow detector.
Compared with prior art, the beneficial effects of the utility model are: overcome the coal-tar middle oil impact on blast furnace blowing technique of coke-oven gas, and cancellation detar device, technical process is simple, easy construction, safe and reliable to operation; Can give full play to the H in the coke-oven gas
2Value, very high economic benefit and energy saving and emission reduction effects are arranged, with winding-up coke-oven gas 20000Nm
3/ h is example, estimates that a year economic benefit is about 100,000,000 yuan, year minimizing CO
2Quantity discharged is about 650,000 tons.
Description of drawings
Fig. 1 is the utility model example structure schematic diagram.
Figure: 1 - mains network 2 - pressurized line 3 - bi-off valve 4 - pneumatic valve of a 5 - manual butterfly-6 - compressor 7 - check valve an 8 - pneumatic valve 2:9 - way sealing blind plate valve 10 - manual butterfly 2:11 - buffer tank 12 - blowing Head 13 - manual butterfly 3:14 - sided stainless steel metal seal pneumatic valve to 15 - manual ball valve a 16 - corrugated metal plate flame arrester 17 - valve check valve 18 - pneumatic control valve of a 19 - blowing Wai canal 20 - blowing branch pipe 21 - manual ball valve two 22 - duplex stainless steel metal seal pneumatic valve II 23 - check valve 2:24 - high-voltage wire braided hose 25 - lumen gun 26 - vent pipe of a 27 - nitrogen purge tube of a 28 - nitrogen pipeline 29 - shut-off valve 30 - pneumatic control valve Two 31 - vent pipe two 32 - nitrogen purge tube two
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
See Fig. 1, it is a kind of blast furnace blowing coke oven gas process unit of the utility model example structure schematic diagram, comprise pressurizing device and blowing device, in the pressurizing device, total pipe network 1 is directly linked to each other with compressor 6 inlet mouths with Hand-operated butterfly valve 1 by bidirectional cutting valve group 3, Pneumatic butterfly valve 1 by pressure pipeline 2, coke-oven gas is pressurized to is higher than blast-furnace tuyere pressure, the coke-oven gas pressurization links to each other with surge tank 11 entrances by reverse checkvalve 1, Pneumatic butterfly valve 28, two way seal blank-plate valve 9 and Hand-operated butterfly valve 2 10.Pressure pipeline 2 is provided with nitrogen sparge tube 1 and many places bleeder 1, and the height of bleeder 1 is higher than the compressor station power house, and nitrogen sparge tube 1 links to each other with nitrogen pipeline 28, carries out urgency blowing by 3 controls of bidirectional cutting valve group.The effect of surge tank 11 is to be convenient to the coke-oven gas that blast furnace receives voltage stabilizing.For the continuity that guarantees to produce, compression set is two covers, and 1# compressor and 2# compressor are out a standby state, are controlled by Controlling System automatic interlock.
In the blowing device, the winding-up supervisor 12 who links to each other with surge tank 11 outlet links to each other with the end that Hand-operated butterfly valve 3 13, two-sided stainless steel metal seal pneumatic ball valve 1, manual ball valve 1, the board-like spark arrester 16 of wavy metal, valve vacuum breaker 17 and pneumatic adjusting valve 1 firmly successively, and the other end of pneumatic adjusting valve 1 links to each other with the bustle pipe 19 of jetting.
Winding-up supervisor 12 is provided with flow, temperature and pressure detecting sensor and bleeder 2 31 and nitrogen sparge tube 2 32, nitrogen sparge tube 2 32 is provided with trip valve 29, two-sided stainless steel metal seals the unlatching of pneumatic ball valve 1 and trip valve 29 and the stop sign automatic interlock of compressor 6 firmly, when the coke-oven gas main pipe pressure is lower than lower value (0.58MPa), two-sided stainless steel metal seals pneumatic ball valve one 14 autoshutdowns firmly, trip valve 29 is opened winding-up supervisor 12 is carried out nitrogen purging, and compressor 6 quits work.
Two-sided stainless steel metal firmly seals pneumatic ball valve 1 and guarantees coke-oven gas zero leakage under the open and close state.The slit gap of the board-like spark arrester 16 of wavy metal can be blocked flame spread in the pipeline, and flame is had the extinguishing effect.When blast-furnace tuyere pressure was higher than the coke-oven gas pressure 0.01MPa left and right sides, valve vacuum breaker 17 is autoshutdown immediately, can effectively prevent the phenomenon that flows backwards.Two-sided stainless steel metal firmly seals pneumatic ball valve 1, nitrogen sparge tube 27, press detection sensor etc. and is provided with signal automatic interlock control on the winding-up supervisor 12, and carries out automatic interlock with the compressor stop sign.
Winding-up bustle pipe 19 is provided with several (among the embodiment being 36) winding-up arm 20, winding-up is provided with manual ball valve 2 21 on the arm successively, two-sided stainless steel metal firmly seals pneumatic ball valve 2 22, reverse checkvalve 2 23 and pneumatic adjusting valve 2 30 and links to each other, pneumatic adjusting valve 2 30 is connected by the exocoel of high pressure wire braided hose 24 with two-chamber spray gun 25, the normal coal injection of the inner chamber of two-chamber spray gun 25, exocoel circuit winding-up coke-oven gas, swiftly flowing coke-oven gas plays certain cooling effect to the inner chamber coal dust, can improve the work-ing life of coal rifle.At the spray gun entrance, in the middle of the coke-oven gas annular flow is trapped among pulverized coal flow, stop pulverized coal flow directly to wash away the air port, reduce the air port wearing and tearing, improve the air port life-span.The effect of pneumatic adjusting valve 1 is that flow is regulated on the winding-up arm, can realize coke-oven gas even winding-up of (36) in each air port.
Winding-up arm 20 is provided with flow detection sensor.
The utility model has been cancelled the detar device, and this technique has improved the production efficiency of compressor, has reduced the systemic resistance loss; After blast furnace has received stable coke-oven gas, be conducive to improve blast furnace production efficiency, promote the direct motion of blast furnace.
Claims (6)
1. blast furnace blowing coke oven gas process unit, comprise pressurizing device and blowing device, it is characterized in that, described pressurizing device comprises compressor and pressure pipeline, total pipe network is directly linked to each other with compressor inlet with Hand-operated butterfly valve one by bidirectional cutting valve group, Pneumatic butterfly valve one by pressure pipeline, and compressor outlet links to each other with the surge tank entrance through reverse checkvalve one, Pneumatic butterfly valve two, two way seal blank-plate valve and Hand-operated butterfly valve two.
2. a kind of blast furnace blowing coke oven gas process unit according to claim 1 is characterized in that, described pressure pipeline is provided with coke oven gas discharge pipe one and nitrogen sparge tube one.
3. a kind of blast furnace blowing coke oven gas process unit according to claim 1, it is characterized in that, described blowing device comprises the winding-up supervisor who links to each other with the surge tank outlet, winding-up supervisor links to each other with the end that Hand-operated butterfly valve three, two-sided stainless steel metal seal pneumatic ball valve one, manual ball valve one, the board-like spark arrester of wavy metal, valve vacuum breaker and pneumatic adjusting valve one firmly successively, and the other end of pneumatic adjusting valve one links to each other with the bustle pipe of jetting.
4. a kind of blast furnace blowing coke oven gas process unit according to claim 3, it is characterized in that, described winding-up supervisor is provided with flow, temperature and pressure proofing unit and coke oven gas discharge pipe two and nitrogen sparge tube two, and nitrogen sparge tube two is provided with trip valve.
5. a kind of blast furnace blowing coke oven gas process unit according to claim 3, it is characterized in that, described winding-up bustle pipe is provided with several winding-up arms, winding-up is provided with manual ball valve two on the arm successively, two-sided stainless steel metal firmly seals pneumatic ball valve two, reverse checkvalve two and pneumatic adjusting valve two and links to each other, and the pneumatic adjusting valve two-way is crossed high pressure wire braided hose and is connected with the cooling chamber of two-chamber spray gun.
6. a kind of blast furnace blowing coke oven gas process unit according to claim 5 is characterized in that, described winding-up arm is provided with flow detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220593281 CN202912975U (en) | 2012-11-12 | 2012-11-12 | Process unit for jetting coke oven gas to blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220593281 CN202912975U (en) | 2012-11-12 | 2012-11-12 | Process unit for jetting coke oven gas to blast furnace |
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| Publication Number | Publication Date |
|---|---|
| CN202912975U true CN202912975U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220593281 Expired - Fee Related CN202912975U (en) | 2012-11-12 | 2012-11-12 | Process unit for jetting coke oven gas to blast furnace |
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| Country | Link |
|---|---|
| CN (1) | CN202912975U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102952911A (en) * | 2012-11-12 | 2013-03-06 | 鞍钢集团工程技术有限公司 | Process device for blowing coke oven gas of blast furnace |
| CN103571985A (en) * | 2013-10-26 | 2014-02-12 | 芜湖新兴铸管有限责任公司 | Safety operation method for gaspipe network in gasometer-free single-seated blast furnace production |
-
2012
- 2012-11-12 CN CN 201220593281 patent/CN202912975U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102952911A (en) * | 2012-11-12 | 2013-03-06 | 鞍钢集团工程技术有限公司 | Process device for blowing coke oven gas of blast furnace |
| CN102952911B (en) * | 2012-11-12 | 2014-08-27 | 鞍钢集团工程技术有限公司 | Process device for blowing coke oven gas of blast furnace |
| CN103571985A (en) * | 2013-10-26 | 2014-02-12 | 芜湖新兴铸管有限责任公司 | Safety operation method for gaspipe network in gasometer-free single-seated blast furnace production |
| CN103571985B (en) * | 2013-10-26 | 2015-09-16 | 芜湖新兴铸管有限责任公司 | Without the method for safe operation of gas holder single seat blast fumance gaspipe network |
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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: 20130501 Termination date: 20151112 |
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| EXPY | Termination of patent right or utility model |