CN102041340B - Energy-saving efficient reduction shaft furnace - Google Patents
Energy-saving efficient reduction shaft furnace Download PDFInfo
- Publication number
- CN102041340B CN102041340B CN2011100214632A CN201110021463A CN102041340B CN 102041340 B CN102041340 B CN 102041340B CN 2011100214632 A CN2011100214632 A CN 2011100214632A CN 201110021463 A CN201110021463 A CN 201110021463A CN 102041340 B CN102041340 B CN 102041340B
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- China
- Prior art keywords
- wall
- stove
- furnace
- reducing gas
- inwall
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses an reduction shaft furnace. The reduction shaft furnace comprises a furnace body, a distribution tray, a blanking tray, a distribution insertion plate, a blanking insertion plate, a heating furnace and a bracket, wherein the furnace body comprises a furnace reduction outer wall, a furnace cooling outer wall and a furnace cooling inner wall; the furnace cooling inner wall is connected with the furnace inner wall; the furnace reduction outer wall and the furnace cooling outer wall are connected and fixed with the bracket; a discharge baffle plate I is arranged between the furnace reduction outer wall and the furnace inner wall, and a sealing ring I is arranged between the furnace reduction outer wall and the furnace heating outer wall; a reducing gas heating device is arranged between the furnace reduction outer wall and the furnace cooling outer wall; the reducing gas heating device comprises a heat insulation layer, a repair brick and a reducing gas heating ring; a reducing gas distribution bag is communicated with the reducing gas heating device; the furnace cooling outer wall is connected with a blocking ring through a discharge baffle plate II and a sealing ring II, and the blocking ring is provided with an annular discharge sealed valve; and one end of an air flue is communicated with the furnace inner wall, and the other end of the air flue is communicated with a draft fan. The reduction shaft furnace has simple structure, low manufacturing cost and high efficiency, and saves energy.
Description
Technical field
The invention relates to a kind of production unit of reducing sponge iron, particularly a kind of reduction shaft furnace.
Background technology
At present, produce sponge iron and mainly contain two kinds in rotary kiln and tunnel, but all exist the recovery time long; Crude fuel is required harsh problem; Thereby cause production cost high, and the both exists the remaining tail gas in reduction back directly to enter in the atmosphere, can not make full use of; Waste energy, plant factor is low; Adopt coal-fired heating, not only the recovery time long, and consumption of coal is big, reduces 1 ton of sponge iron usually, needs 1.5 tons fire coal, one-period approximately needs about 48 hours, thereby causes the production cost height, yields poorly; There is CO gas to enter in the atmosphere in the tail gas that the both exists the reduction back to produce in addition, polluted environment, wasted the energy.
Summary of the invention
The purpose of the invention provides a kind of reduction shaft furnace, and it is simple in structure, and cost of manufacture is low, and efficient is high, save energy.
Reduction shaft furnace, it comprises body of heater, body of heater comprises stove inwall and stove heating outer wall, material separating disc; The blanking dish, sub-material plate, blanking plate, process furnace; Support, described body of heater also comprise stove also prototheca, stove cooling outer wall and stove cooled inner wall, and the stove cooled inner wall is connected with the stove inwall; The stove also inwall of inwall and the stove cooling outer wall of prototheca is provided with thermopair; Stove also prototheca is connected fixing with stove cooling outer wall with support; The discharge baffle I is arranged on stove also between prototheca and the stove inwall, and the wear ring I is arranged on stove also between prototheca and the stove heating outer wall; Stove also is provided with the reducing gas heating unit between prototheca and the stove cooling outer wall, and the reducing gas heating unit comprises thermal insulation layer, maintenance brick and reducing gas heating ring, and reducing gas divides gas bag to be communicated with the reducing gas heating unit; Stove cooling outer wall is connected with the resistance material ring with the wear ring II through the discharge baffle II, and the resistance material ring is provided with annular discharging seal valve; One end in air channel is communicated with the stove inwall, and the other end in air channel is communicated with induced draft fan.
The beneficial effect of the invention, reduction shaft furnace uses CO gas as reducing gas; Carbon monoxide removal of sulphur, obtains purified CO gas in producer gas process; Waste heat through cooling section heats CO gas; CO gas after the heating reduces to brown iron oxide, in reduction process, does not have the pollution of sulphur to brown iron oxide, and the gas of eliminating does not contain the pollution of sulphur yet; The reducing gas carbon monoxide plays the effect of deoxygenation, carburizing to brown iron oxide; The feed rate of carbon monoxide is to decide according to the carbon content needs of product, so it is fast to play reduction rate, does not waste energy, and efficient is high.
Description of drawings
Fig. 1 is the structural representation of the invention.
Fig. 2 is the A enlarged diagram.
Fig. 3 is the B enlarged diagram.
Embodiment
Shown in Fig. 1-3, reduction shaft furnace, body of heater comprise stove inwall 7, stove heating outer wall 6, stove also prototheca 21, stove cooling outer wall 10 and stove cooled inner wall 23; Stove heating outer wall 6, stove also prototheca 21 are connected with support 8 respectively with stove cooling outer wall 10, and the inwall of stove heating outer wall 6, stove also are respectively equipped with thermopair 24 on inwall and the inwall that stove cools off outer wall 10 of prototheca 21; Stove cooled inner wall 23 is connected with stove inwall 7; Material separating disc 1 flexibly connects with blanking dish 2, and material separating disc 1 is provided with sub-material plate 4, and blanking dish 2 is provided with blanking plate 5, and the outer of blanking dish 2 is connected sealing with the top of stove heating outer wall 6, and ventilation gap is left on the top of the bottom of blanking dish 2 and stove inwall 7; Process furnace 3 is communicated with stove heating outer wall 6; Discharge baffle I 16 is arranged between stove heating outer wall 6 and the stove inwall 7; Wear ring I 17 is arranged on stove also between prototheca 21 and the stove inwall 7; Stove also is provided with the reducing gas heating unit between prototheca 21 and the stove cooling outer wall 10, and the reducing gas heating unit comprises thermal insulation layer 20, maintenance brick 19 and reducing gas heating ring 18, and reducing gas divides gas bag 9 to be communicated with the reducing gas heating unit; Stove cooling outer wall 10 is connected with resistance material ring 22 with wear ring II 12 through discharge baffle II 11, and resistance material ring 22 is provided with annular discharging seal valve 13; One end in air channel 14 is communicated with stove inwall 7, and the other end in air channel 14 is communicated with induced draft fan 15.
Claims (1)
1. reduction shaft furnace, it comprises body of heater, material separating disc, blanking dish, sub-material plate, blanking plate, process furnace, support, described body of heater comprise stove inwall and stove heating outer wall; It is characterized in that: described body of heater also comprises stove also prototheca, stove cooling outer wall and stove cooled inner wall; The stove cooled inner wall is connected with the stove inwall; The stove also inwall of inwall and the stove cooling outer wall of prototheca is provided with thermopair; Stove also prototheca is connected fixing with stove cooling outer wall with support; The discharge baffle I is arranged on stove also between prototheca and the stove inwall, and the wear ring I is arranged on stove also between prototheca and the stove heating outer wall; Stove also is provided with the reducing gas heating unit between prototheca and the stove cooling outer wall, and the reducing gas heating unit comprises thermal insulation layer, maintenance brick and reducing gas heating ring, and reducing gas divides gas bag to be communicated with the reducing gas heating unit; Stove cooling outer wall is connected with the resistance material ring with the wear ring II through the discharge baffle II, and the resistance material ring is provided with annular discharging seal valve; One end in air channel is communicated with the stove inwall, and the other end in air channel is communicated with induced draft fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100214632A CN102041340B (en) | 2011-01-19 | 2011-01-19 | Energy-saving efficient reduction shaft furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100214632A CN102041340B (en) | 2011-01-19 | 2011-01-19 | Energy-saving efficient reduction shaft furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102041340A CN102041340A (en) | 2011-05-04 |
| CN102041340B true CN102041340B (en) | 2012-04-18 |
Family
ID=43907888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100214632A Expired - Fee Related CN102041340B (en) | 2011-01-19 | 2011-01-19 | Energy-saving efficient reduction shaft furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102041340B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113151629B (en) * | 2021-05-25 | 2024-04-19 | 周大鹏 | Energy-saving shaft furnace for reducing hematite and method for reducing hematite |
| CN116200566B (en) * | 2023-03-07 | 2023-12-22 | 酒泉钢铁(集团)有限责任公司 | Heat accumulating type gas-based shaft furnace direct reduction process for multistage reduction heat supply |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3375099A (en) * | 1964-06-30 | 1968-03-26 | Armco Steel Corp | Production of iron from pelletized iron ores |
| EP0046145A1 (en) * | 1980-08-08 | 1982-02-17 | VOEST-ALPINE Aktiengesellschaft | Process and apparatus for the direct reduction of oxidic ferriferous materials |
| CN1120588A (en) * | 1994-10-14 | 1996-04-17 | 中国科学院化工冶金研究所 | Calcining system and technique for fluidized bed-mobile bed mixed reactor |
| CN201942699U (en) * | 2011-01-19 | 2011-08-24 | 周广砥 | Energy-saving high-efficient reduction shaft furnace |
-
2011
- 2011-01-19 CN CN2011100214632A patent/CN102041340B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3375099A (en) * | 1964-06-30 | 1968-03-26 | Armco Steel Corp | Production of iron from pelletized iron ores |
| EP0046145A1 (en) * | 1980-08-08 | 1982-02-17 | VOEST-ALPINE Aktiengesellschaft | Process and apparatus for the direct reduction of oxidic ferriferous materials |
| CN1120588A (en) * | 1994-10-14 | 1996-04-17 | 中国科学院化工冶金研究所 | Calcining system and technique for fluidized bed-mobile bed mixed reactor |
| CN201942699U (en) * | 2011-01-19 | 2011-08-24 | 周广砥 | Energy-saving high-efficient reduction shaft furnace |
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| Publication number | Publication date |
|---|---|
| CN102041340A (en) | 2011-05-04 |
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Granted publication date: 20120418 Termination date: 20160119 |
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