CN201626970U - Gasification and iron smelting device with cold bonded pellets containing iron and coal powder - Google Patents
Gasification and iron smelting device with cold bonded pellets containing iron and coal powder Download PDFInfo
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- CN201626970U CN201626970U CN2009202711750U CN200920271175U CN201626970U CN 201626970 U CN201626970 U CN 201626970U CN 2009202711750 U CN2009202711750 U CN 2009202711750U CN 200920271175 U CN200920271175 U CN 200920271175U CN 201626970 U CN201626970 U CN 201626970U
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Abstract
A gasification and iron smelting device with cold bonded pellets containing iron and coal powder consists of an upper feed inlet, a preheating solid-state reduction gasification section, a smelting reduction section, a heat insulating slag separation section, upper air inlets, lower air inlets, a water cooling jacket, a siphon type iron melt outlet, an emergency treatment port, a slag hole, an oxygenized air inlet, an induced draft fan, a gas outlet and the like. The preheating solid-state reduction gasification section, the smelting reduction section and the heat insulating slag separation section are sequentially arranged on the same hearth of a shaft furnace from top to bottom and lined with heat insulating liners, the upper feed inlet is arranged at the top of the preheating solid-state reduction gasification section, the gas outlet is arranged on the side thereof, one to two rows of upper air inlets are arranged on the middle lower portion thereof, the water cooling jacket is arranged outside the smelting reduction section, the lower air inlets are arranged on the middle lower portion of the smelting reduction section, the siphon iron melt outlet and the emergency treatment port are arranged at the bottom of the slag separation section, the slag hole is disposed on the middle upper portion of the slag separation section, the upper air inlets are annular surrounding air ducts which are directly connected with the oxygenized air inlet, and the lower air lets include a plurality of burning nozzles distributed circumferentially and uniformly and are connected with the oxygenized air inlet and the induced draft fan.
Description
One, technical field
The utility model relates to a kind of device of smelting iron by gasifying cold bonded coal-containing iron powder pellets, and it belongs to fused reduction iron-smelting and coal chemical technology.
Two, background technology
The existing hundreds of years history of blast furnace in modern age, its technology has reached quite perfect stage.But when it improves day by day and maximizes, also brought long flow path, invested problems such as big and contaminate environment.Coking coal resource is limited in the world, and the coking coal of China is also not enough, and process of coking is seriously polluted.China has been world steel big producing country, and pig iron output is first of the world.Nineteen ninety-five, pig iron output surpassed 100,000,000 tons, and coke output reaches 7,200 ten thousand tons, not only will consume more than 100,000,000 ton of coking coal every year, and so a large amount of coke production is very important especially to the pollution of environment.
Because coking coal resource is shortage day by day, coke oven wears out gradually and people pollute growing interest to coke oven, and since the eighties, each developed country seeks to develop coke-free ironmaking technology one after another: melting and reducing and direct reduction iron making technology.Fused reduction iron-smelting is a briquet replacing coke and directly with fine ore ironmaking, thereby does not only have coking but also do not have sintering or pelletizing plant, makes the ironmaking process simplification, and purpose is to replace blast furnace, is the direction of ironmaking technology development.
People are divided into melting and reducing " single stage method " melting and reducing and " two step method " melting and reducing with " having or not prereduction " traditionally.The melting and reducing flow process adopts two step method more at present, promptly earlier in shaft furnace (lump ore) or fluidized-bed (fine ore) ore is carried out prereduction, and then enters end reducing furnace.Add coal and oxygen in end reducing furnace, coal combustion produces heat and H
2, reducing gas such as CO, will through the ore deposit fusing of prereduction flow process and further reduction generate molten iron and slag, H
2Then make reductive agent with CO for reduction furnace.The smelting reduction process of only suitability for industrialized production is the Corex flow process at present.The advantage of Corex technology is need not be burnt with coal, does not have coke oven to pollute, and weak point is directly to use fine ore, consumes high.Its improved direction is to reduce coal consumption and oxygen consumption, and utilizes its output coal gas economically.
" single stage method " melting and reducing has only smelting reduction, and the prereduction of iron ore rate is a melting reduction iron-smelting method truly near 0.Be pre-mixed with iron ore powder with as the coal of reductive agent, and be formed as pelletizing or press blocky agglomerate mixture, the process quilt that directly " single stage method " melting and reducing is produced molten iron in shaft furnace after the preheating oven dry it is believed that the ironmaking of one of prospect new technology is arranged most.
Three, summary of the invention
The object of the present invention is to provide a kind of device of improved smelting iron by gasifying cold bonded coal-containing iron powder pellets, it is the production efficiency height not only, and Btu utilization is reasonable, and comprehensive energy consumption is extremely low, and equipment is simple.
In order to achieve the above object, the device of smelting iron by gasifying cold bonded coal-containing iron powder pellets of the present invention, it by last opening for feed, solid state reduction and gaseous section of preheating, melting and reducing section, slag iron segregation section, go up blast inlet, the tap a blast furnace mouth of a river, emergent management mouth, slag notch, oxygen-enriched inlet, induced draft fan, gas exit etc. of blast inlet, water-cooling jacket, hydrocone type are formed down.It is characterized in that solid state reduction and gaseous section of preheating, melting and reducing section and slag iron segregation section design from top to bottom successively at the same burner hearth of shaft furnace, liner insulating lining; Solid state reduction and gaseous section top of preheating is last opening for feed, and the side is a gas exit, and the bottom is provided with blast inlet on the 1-2 row therein; Melting and reducing section outside is provided with water-cooling jacket, and the middle and lower part is provided with down blast inlet; Slag iron segregation section bottom is provided with hydrocone type the tap a blast furnace mouth of a river and emergent management mouth, and the middle and upper part is provided with slag notch; Last blast inlet is that annular is enclosed airduct, directly links to each other with oxygen-enriched inlet; Following blast inlet links to each other with induced draft fan with oxygen-enriched inlet for many burner noz(zle)s for evenly arranging along circumference.
Four, description of drawings
Accompanying drawing is the structural representation of utility model.
The drawing of accompanying drawing is established bright as follows:
1, go up opening for feed 2, shaft furnace 3, solid state reduction and gaseous section 4 of preheating, go up blast inlet 5, water-cooling jacket 6, melting and reducing section 7, the tap a blast furnace mouth of a river 10, emergent management mouth 11, slag notch 12, oxygen-enriched inlet 13, induced draft fan 14, gas exit of blast inlet 8, slag iron segregation section 9, hydrocone type down
Below in conjunction with drawings and Examples in detail characteristics of the present utility model are described in detail.
Five, embodiment
Below in conjunction with accompanying drawing the utility model is described in detail: the device of smelting iron by gasifying cold bonded coal-containing iron powder pellets, it by last opening for feed (1), preheating solid state reduction and gaseous section (3), melting and reducing section (6), slag iron segregation section (8), go up blast inlet (4), the tap a blast furnace mouth of a river (9), emergent management mouth (10), slag notch (11), oxygen-enriched inlet (12), induced draft fan (13), gas exit (14) etc. of blast inlet (7), water-cooling jacket (5), hydrocone type are formed down.It is characterized in that preheating solid state reduction and gaseous section (3), melting and reducing section (6) and slag iron segregation section (8) design from top to bottom successively at the same burner hearth of shaft furnace (2), liner insulating lining; Solid state reduction and gaseous section top of preheating (3) is last opening for feed (1), and the side is gas exit (14), and the bottom is provided with blast inlet on the 1-2 row (4) therein; Melting and reducing section (6) outside is provided with water-cooling jacket (5), and the middle and lower part is provided with down blast inlet (7); Insulation slag iron segregation section (8) bottom is provided with hydrocone type the tap a blast furnace mouth of a river (9) and emergent management mouth (10), and the middle and upper part is provided with slag notch (11); Last blast inlet (4) encloses airduct for annular, directly links to each other with oxygen-enriched inlet (12); Following blast inlet (7) links to each other with induced draft fan (13) with oxygen-enriched inlet (12) for many burner noz(zle)s for evenly arranging along circumference.
When reality is used, be raw material to contain coal 15-30% cold bonded coal-containing iron powder pellets, directly the last opening for feed (1) from shaft furnace (2) adds; The cold bonded coal-containing iron powder pellets is at preheating solid state reduction and gaseous section (3) preheating, drying, destructive distillation, gasification and solid reduction, the oxygen-rich air burning that part coal gas is blasted from last blast inlet (4) is self-produced personal, to guarantee that the prereduction temperature is at 1150-1250 ℃, a large amount of coal gas are discharged from the gas exit (14) of shaft furnace (2) top-side, and part is returned down blast inlet (7) by induced draft fan (13) circulation; The pelletizing of prereduction falls into melting and reducing section (3), returned heating gas and oxygen-rich air mixed firing by the part that blasts from following many burner noz(zle)s of blast inlet (7), guarantee that the melting and reducing temperature is at 1500～1700 ℃, pelletizing melts also original production molten iron, and the coal gas of high temperature that reduction produces upwards flow into solid state reduction and gaseous section of preheating (3); Molten iron and slag flow into slag iron segregation section (8), and slag is discharged by slag notch (11), and the interfacial level of stable molten iron-slag is discharged and kept to molten iron by the hydrocone type mouth of a river (9) of tapping a blast furnace; Slag iron segregation section (8) bottom is provided with emergent management mouth (10), guarantees emptying when shut-down or emergency episode.
The utlity model has following beneficial effect: directly utilize fine ore, fine coal to smelt, exempted sintering, pelletizing, coking plant investment fully, eliminated the coking pollution; The comprehensive method of investment is few, and Btu utilization is reasonable, and comprehensive energy consumption is extremely low, the calorific value of gas height; Coal Gas Cooling Water is used for containing the coal iron powder pellets batch mixing, pollutes very little; Equipment failure rate is low, and scale is changeable, is easy to coproduction casting and electric furnace steel making; Flow process is short, and cost is low, and is easy to operate.
Claims (1)
1. the device of a smelting iron by gasifying cold bonded coal-containing iron powder pellets, by last opening for feed, solid state reduction and gaseous section of preheating, melting and reducing section, slag iron segregation section, go up blast inlet, the tap a blast furnace mouth of a river, emergent management mouth, slag notch, oxygen-enriched inlet, induced draft fan, gas exit of blast inlet, water-cooling jacket, hydrocone type formed down, it is characterized in that solid state reduction and gaseous section of preheating, melting and reducing section and slag iron segregation section design from top to bottom successively at the same burner hearth of shaft furnace, liner insulating lining; Solid state reduction and gaseous section top of preheating is last opening for feed, and the side is a gas exit, and the bottom is provided with blast inlet on the 1-2 row therein; Melting and reducing section outside is provided with water-cooling jacket, and the middle and lower part is provided with down blast inlet; Slag iron segregation section bottom is provided with hydrocone type the tap a blast furnace mouth of a river and emergent management mouth, and the middle and upper part is provided with slag notch; Last blast inlet is that annular is enclosed airduct, directly links to each other with oxygen-enriched inlet; Following blast inlet links to each other with induced draft fan with oxygen-enriched inlet for many burner noz(zle)s for evenly arranging along circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202711750U CN201626970U (en) | 2009-12-02 | 2009-12-02 | Gasification and iron smelting device with cold bonded pellets containing iron and coal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202711750U CN201626970U (en) | 2009-12-02 | 2009-12-02 | Gasification and iron smelting device with cold bonded pellets containing iron and coal powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201626970U true CN201626970U (en) | 2010-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202711750U Expired - Fee Related CN201626970U (en) | 2009-12-02 | 2009-12-02 | Gasification and iron smelting device with cold bonded pellets containing iron and coal powder |
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| Country | Link |
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| CN (1) | CN201626970U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106957936A (en) * | 2017-04-11 | 2017-07-18 | 江苏省冶金设计院有限公司 | A kind of system and method for reduction shaft furnace and mill choosing separation iron, vanadium and titanium |
-
2009
- 2009-12-02 CN CN2009202711750U patent/CN201626970U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106957936A (en) * | 2017-04-11 | 2017-07-18 | 江苏省冶金设计院有限公司 | A kind of system and method for reduction shaft furnace and mill choosing separation iron, vanadium and titanium |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20121202 |