CN102534075B - Blast-furnace gas pressure regulating process - Google Patents
Blast-furnace gas pressure regulating process Download PDFInfo
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- CN102534075B CN102534075B CN 201010612860 CN201010612860A CN102534075B CN 102534075 B CN102534075 B CN 102534075B CN 201010612860 CN201010612860 CN 201010612860 CN 201010612860 A CN201010612860 A CN 201010612860A CN 102534075 B CN102534075 B CN 102534075B
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Abstract
The invention provides a blast-furnace gas pressure regulating process, wherein a pipeline and a pressure reducer set are comprised. The pressure reducer set is formed by connecting two stages of pressure reducers in series. The first stage of pressure reducer is of a clapboard type, has a fixed pressure reducing value and mainly comprises an inlet pipeline, an outlet pipeline, an inner shell, an outer shell, a sound attenuation material, a clapboard and a support. The second stage of pressure reducer is of a circular seam type, has an adjustable pressure reduction value and mainly comprises an outlet pipeline, an inlet pipeline, an inner shell, an outer shell, a clock valve body, a sound attenuation material, a seal ring, a transmission device, a support device and the like. According to the blast-furnace gas pressure regulation process, because the novel pressure redactor set which formed by connecting two stages of novel pressure reducers in series and completely different from a butterfly valve set manufactured by the traditional process, the adverse factors of the butterfly valve set are eliminated. The blast-furnace gas pressure regulating process disclosed by the invention has the advantages of concise flow, simple and reliable equipment operation, low noise, low vibration, guarantee of stable equipment operation, prolonged service life, simple structure of equipment, investment saving, low routine maintenance and considerable benefit saving.
Description
Technical field
The present invention relates to a kind of blast-furnace gas pressure regulating process, especially a kind of pressure reducer that adopts is realized the technique that blast-furnace gas pressure is regulated automatically.
Background technology
The tradition blast-furnace gas pressure regulating process adopts a plurality of electric butterfly valves and a normal open pipe to realize, the defective of this technique: the one, device structure is complicated, because decide valve quantity and specification according to the diameter of main gas pipe, just need join 4～5 valves as the gas pipe of ф 1500～ф 2500 calibers; The 2nd, operation is controlled complicated, and one in the butterfly valve group is to be controlled by YE, all the other by electric motor in the operation room telemanipulation.The 3rd, the noise that the gas shock valve plate produces and vibration are large, the equipment fluctuation of service.The 4th, safe reliability is poor, and because of the gas shock valve body, sealing is worn with filler, produces the coal gas probability that leaks large.Separately there is the Anshan iron and steel plant blast furnace to adopt two coal gas relief valve parallel connection technologies to realize that gas pressure regulates automatically, this defective workmanship is that noise and vibration are large, in the furnace top pressure normal range, the noise that pressure reducer equipment produces far exceeds standard value, especially vibration effect the normal production of blast furnace.
Summary of the invention
The object of the present invention is to provide that a kind of device structure is simple, the blast-furnace gas pressure regulating process of convenient and reliable operation, long service life, safety and environmental protection that noise is low.
The object of the present invention is achieved like this: this blast-furnace gas pressure regulating process mainly is comprised of pipeline and pressure reducer group, the purified gas main pipe line is received first step pressure reducer entrance, the outlet of first step pressure reducer is connected with second stage pressure reducer entrance through pipeline, and pressure reducer outlet in the second stage is through pipeline access gaspipe network.
First step pressure reducer of the present invention is iris type, and pressure relief value is fixed.The dividing plate pressure reducer mainly is made of import and export pipeline, inner and outer shell, dividing plate, filling quieter material between inner and outer shell, and the dividing plate pressure reducer is carried by bearing, horizontal installation.Coal gas enters cylindrical shell, through the stationary barrier of which floor staggered arrangement, is then discharged by outlet.
The second stage of the present invention pressure reducer is circular seam type, and pressure relief value is adjustable.The circumferential weld pressure reducer mainly is made of import and export pipeline, inner and outer shell, clock valve body, filling quieter material between inner and outer shell, electronic or hydraulic efficiency plant is adopted in the transmission of clock valve body, and air-flow passes through circumferential weld place is provided with sealing-ring, the circumferential weld pressure reducer is carried by bracing or strutting arrangement, vertical installation.Coal gas enters the clock valve top of circumferential weld pressure reducer, and by being discharged by outlet after circumferential weld, operation room telemanipulation transmission mechanism changes the stroke of clock valve, and then changes the circumferential weld size, realizes the decompression purpose.
When blast furnace was normally produced, stock gas pressure entered gaspipe network pressure and need be down to 0.02～0.035MPa between 0.15～0.25MPa.First step dividing plate pressure reducer, the approximately 0.1MPa that reduces pressure, residue pressure reduction are regulated by second stage circumferential weld pressure reducer and realize.
The present invention is due to the decompressor group that has adopted two-stage series connection, and technical process is succinct, and operation of equipment is simple and reliable; Noise is low, vibrates littlely, and the equipment that guaranteed operates steadily, and has extended work-ing life; Device structure is simple, reduced investment, and the routine maintenance amount is few, saves wound and imitates considerable.
Description of drawings
Fig. 1 is process flow sheet of the present invention;
Fig. 2 is dividing plate pressure reducer structural representation;
Fig. 3 is circumferential weld pressure reducer structural representation.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Fig. 1～3, blast-furnace gas pressure regulating process mainly is comprised of pipeline and pressure reducer group, the purified gas main pipe line is received first step pressure reducer 1 entrance, and the outlet of first step pressure reducer is connected with second stage pressure reducer 2 entrances through pipeline, and pressure reducer outlet in the second stage is through pipeline access gaspipe network.
First step pressure reducer is iris type, mainly consisted of by inlet pipeline 3, outlet conduit 8, inner housing 5, body skin 6, dividing plate 4, and filling quieter material 7 between inner and outer shell, the dividing plate pressure reducer is by bearing 9 carryings, horizontal installation.
Second stage pressure reducer is circular seam type, mainly consisted of by inlet pipeline 10, outlet conduit 18, inner housing 12, body skin 11, clock valve body 17, filling quieter material 13 between inner and outer shell, electronic or hydraulic efficiency plant is adopted in the transmission 15 of clock valve body, air-flow passes through circumferential weld place is provided with sealing-ring 16, the circumferential weld pressure reducer is by bracing or strutting arrangement 14 carryings, vertical installation.
Claims (1)
1. blast-furnace gas pressure regulating process, formed by pressure reducer group and pipeline, it is characterized in that: the pressure reducer group is made of the double reductor series connection, the purified gas main pipe line is received first step pressure reducer entrance, the outlet of first step pressure reducer is connected with second stage pressure reducer entrance through pipeline, and pressure reducer outlet in the second stage is through pipeline access gaspipe network; First step pressure reducer is iris type, and pressure relief value is fixed, mainly consisted of by import and export pipeline, inner and outer shell, dividing plate, and filling quieter material between inner and outer shell, the dividing plate pressure reducer is carried by bearing, horizontal installation; Second stage pressure reducer is circular seam type, pressure relief value is adjustable, mainly consisted of by import and export pipeline, inner and outer shell, clock valve body, filling quieter material between inner and outer shell, electronic or hydraulic efficiency plant is adopted in the transmission of clock valve body, air-flow passes through circumferential weld place is provided with sealing-ring, and the circumferential weld pressure reducer is carried by supporting structure, vertical installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010612860 CN102534075B (en) | 2010-12-28 | 2010-12-28 | Blast-furnace gas pressure regulating process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010612860 CN102534075B (en) | 2010-12-28 | 2010-12-28 | Blast-furnace gas pressure regulating process |
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| Publication Number | Publication Date |
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| CN102534075A CN102534075A (en) | 2012-07-04 |
| CN102534075B true CN102534075B (en) | 2013-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010612860 Active CN102534075B (en) | 2010-12-28 | 2010-12-28 | Blast-furnace gas pressure regulating process |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103969050A (en) * | 2014-04-24 | 2014-08-06 | 中国北方发动机研究所(天津) | Backpressure regulating device of single-cylinder engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760573A (en) * | 2009-12-31 | 2010-06-30 | 中冶南方工程技术有限公司 | Method for controlling pressure of blast furnace top by adopting gas dry dust removing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3130913C2 (en) * | 1981-08-05 | 1984-03-29 | Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen | Method for operating a blast furnace system |
| JPH0625371B2 (en) * | 1990-11-16 | 1994-04-06 | 新日本製鐵株式会社 | Blast furnace gas recovery method and device |
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2010
- 2010-12-28 CN CN 201010612860 patent/CN102534075B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760573A (en) * | 2009-12-31 | 2010-06-30 | 中冶南方工程技术有限公司 | Method for controlling pressure of blast furnace top by adopting gas dry dust removing device |
Non-Patent Citations (2)
| Title |
|---|
| JP平4-183810A 1992.06.30 |
| JP昭58-67806A 1983.04.22 |
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