CN205653474U - Reducing furnace - Google Patents
Reducing furnace Download PDFInfo
- Publication number
- CN205653474U CN205653474U CN201620410077.0U CN201620410077U CN205653474U CN 205653474 U CN205653474 U CN 205653474U CN 201620410077 U CN201620410077 U CN 201620410077U CN 205653474 U CN205653474 U CN 205653474U
- Authority
- CN
- China
- Prior art keywords
- heater
- retort
- furnace
- furnace body
- nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a directly reduced iron production processing technology field, concretely relates to reducing furnace, this reducing furnace includes furnace body and furnace body support. Be equipped with a plurality of retort of erectting in the furnace body, the feed inlet of retort is located the top of furnace body, and the discharge gate of retort passes the cooling device of setting in the furnace body and the transfer device that is located the furnace body bottom is connected. The cross -section of retort is oval shape, and the retort is established in the furnace body according to rectangle array arrangement interval, and the axis in retort cross -section is parallel with furnace body width direction's lateral wall. Reducing furnace still includes heating device, and heating device includes the nozzle that is located furnace inner wall and is located the outside confession fuel channel who communicates with the nozzle of furnace body. The utility model discloses a reducing furnace area is little, heat utilization rate is high, easy maintenance, can realize that the interior furnace charge of furnace body is heated and falls evenly.
Description
Technical field
This utility model relates to DRI production and processing technical field, is specifically related to a kind of reduction furnace.
Background technology
DRI, it is called for short sponge iron, it it is the metallurgic product produced in solid-state direct-reduction with the ferrum oxide that the impurity contents such as high-grade iron mine, pellet or sulfur phosphorus are low, its chemical composition stability, impurity content is few, can be as the succedaneum of high-quality steel scrap, steel-making is control with addition of DRI, dilutes one of important means of harmful element in steel, also being to improve steel product quality, increase rolling shapes, the important source material of the development ultrashort flow process of Ferrous Metallurgy, therefore it becomes the selection that countries in the world possess the regional development steel and iron industry of resources supplIes simultaneously.Direct-reduction technique, according to the difference of use reducing agent, can be divided into the gas base directly reducing method using gaseous reducing agent and the coal-based direct reduction method using solid reductant.Owing to China has abundant coal resources, the coal of the most currently used solid has a broad prospect of the use as the coal-based direct reduction method tool of reducing agent.
In coal-based direct reduction method, the structure design of reduction furnace body of heater itself is most important to the effect of direct-reduction.Reduction furnace mainly uses and arranges multiple independent rectangle or circular vertical response tank in body of heater at present, the surrounding of retort arranges gas burner, and the technological means that will be separated by wall brick between gas burner and rectangle or circular vertical response tank, make furnace charge carry out reduction reaction by the heat transfer effect of wall brick in the case of isolating with gas burner.There is following defect in existing reduction furnace: the rectangle 1, arranged in body of heater or circular vertical response tank and gas burner, easily causes being heated and falling uneven of the internal furnace charge of retort, has a strong impact on the effect of reduction furnace；2, when retort is circular in body of heater, body of heater itself and Lu Nei gas burner floor space can be caused relatively big, cause coal gas demand more, heat utilization rate is less；3 additionally, in reduction furnace gas burner structure arrange complex, be unfavorable for the maintenance of reduction furnace.Therefore, it is necessary to a kind of reduction furnace of design, to overcome defect of the prior art.
Summary of the invention
For solving above-mentioned technical problem, this utility model provides one, and floor space is little, heat utilization rate is high, and in realizing body of heater, furnace charge is heated and falls uniformly, and easy-to-maintain reduction furnace.
This utility model is realized by following technical proposals:
A kind of reduction furnace, including body of heater and body of heater bearing.The rectangular body of body of heater, the surrounding of body of heater, top and bottom are equipped with heat-resisting thermal insulation layer；The top of body of heater is provided with exhaust ventilation pipeline；The retort of multiple setting it is provided with in body of heater；The charging aperture of retort is positioned at the top of body of heater；The discharging opening of retort is connected through the chiller being arranged in body of heater with the transporter being positioned at bottom of furnace body.The cross section of retort is kidney ellipsoid, and retort is located in body of heater by rectangular array arrangement interval；The axis in retort cross section is parallel with the sidewall of body of heater width.Reduction furnace also includes heater, and heater includes the nozzle being positioned at inboard wall of furnace body and the outside confession fuel channel connected with nozzle that is positioned at body of heater.
Further, said nozzle is spaced setting along body of heater length direction sidewall；Retort it is provided with between adjacent nozzle.
Further, above-mentioned chiller is the cooling hydrosphere being arranged on lower portion of furnace body.
Further, above-mentioned transporter is belt conveyor.
Further, the inwall of above-mentioned body of heater is provided with at least one temperature sensor, is provided with at least one pressure transducer for fuel channel.Temperature sensor and pressure transducer are connected with the computer being located at outside body of heater and control station by wire.
Further, being provided with heat exchanger bottom above-mentioned exhaust piping, heat exchanger is connected with nozzle by preheated air pipeline.
This utility model compared with prior art has the advantage that
This utility model is by arranging the retort that cross sectional shape is kidney ellipsoid in body of heater, and retort is pressed rectangular array arrangement, is provided with retort being interval with between nozzle, and nozzle along inboard wall of furnace body length direction；By the coal gas of the burning that nozzle sprays, heating retort, so that the furnace charge in retort can the most uniformly be heated, the material in simultaneous reactions tank is also more prone to even drop down；Additionally, retort presses rectangular array arrangement, the floor space of body of heater can be reduced, also improve the heat utilization rate of body of heater；Body of heater heater is positioned on the sidewall of body of heater, beneficially the maintenance of body of heater；Being provided with heat exchanger bottom the exhaust piping at body of heater top, by preheated air pipeline, the air after preheating can be delivered at nozzle combustion-supporting the most again more than air preheat to 150 degree by heat exchanger, beneficially the recycling of heat energy in body of heater, saves the energy.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model；
Accompanying drawing 2 be in Fig. 1 A-A to sectional view；
In figure: 1-body of heater；2-combustor；3-retort；4-charging aperture；5-cools down hydrosphere；6-discharging opening；7-belt conveyor；8-body of heater bearing；9-nozzle；10-exhaust piping；11-heat exchanger；12-is for fuel channel；13-preheated air pipeline；The heat-resisting thermal insulation layer of 14-；15-temperature sensor；16-pressure transducer.
Detailed description of the invention
With specific embodiment, this utility model is further described below in conjunction with the accompanying drawings, in order to those skilled in the art understand this utility model.
A kind of reduction furnace of the present utility model, including body of heater 1 and body of heater bearing 8.The rectangular body of body of heater 1, the surrounding of body of heater 1, top and bottom are equipped with heat-resisting thermal insulation layer 14；The top of body of heater 1 is provided with exhaust ventilation pipeline 10；60 retort 3 erect it are provided with in body of heater 1；The charging aperture 4 of retort 3 is positioned at the top of body of heater 1；The discharging opening 6 of retort 3 is connected through the chiller being arranged in body of heater 1 with the transporter being positioned at bottom body of heater 1.The cross section of retort 3 is kidney ellipsoid, is located in body of heater 1 by rectangular array arrangement interval.The axis in retort 3 cross section is parallel with the sidewall of body of heater 1 width.A length of 1500mm within retort 3, a width of 460mm, a height of 8163mm.It is 1050～1150 DEG C that retort 3 commonly uses temperature, maximum temperature 1200 DEG C.
Reduction furnace also includes heater, including being positioned at the nozzle 9 of body of heater 1 inwall and the outside confession fuel channel 12 connected with nozzle 9 that is positioned at body of heater 1.Nozzle arranges 84 altogether, and along body of heater 1 length direction sidewall, interval is arranged；Retort 3 it is provided with between adjacent nozzle 9.Chiller is the cooling hydrosphere 5 being arranged on lower portion of furnace body.Transporter is belt conveyor 7.The inwall of body of heater 1 is provided with 43 temperature sensors 15；It is provided with 9 pressure transducers 16 for fuel channel 12；Temperature sensor 15 and pressure transducer 16 are connected with the computer being located at outside body of heater 1 and control station by wire.The PLC system of control station immediately adjusts fuel feed according to the data signal that temperature sensor 15 and pressure transducer 16 monitoring obtain and regulates reduction temperature with trace.Heat exchanger 11 it is provided with bottom exhaust piping 10；Heat exchanger 11 is connected with nozzle 9 by preheated air pipeline 13.
This utility model device is with all kinds of coal gas as fuel, and the raw material that the lump ore sieved with process or pellet and solid reductant (various types of coal) are mixed into is as furnace charge.Fuel is by combustion heating between the retort 3 vertical in body of heater 1 of nozzle 9, and furnace charge is continuously added to from charging aperture 4, carries out preheating, reduces, cools down, the stage such as separation in the vertical response tank 3 of body of heater 1 inner sealing.The recovery time of retort 3 is 12h～18h, can be adjusted by discharging opening 6 according to the material composition of actually required product and use.
Embodiment of above is only in order to illustrate this utility model and and technical scheme described by unrestricted this utility model；Although therefore this specification has been carried out detailed description with reference to each above-mentioned embodiment to this utility model, it will be appreciated by those persons skilled in the art that still can modify this utility model or equivalent；And all are without departing from the technical scheme of spirit and scope of the present utility model and improvement thereof, it all should be contained in the middle of right of the present utility model.
Claims (6)
1. a reduction furnace, including body of heater (1) and body of heater bearing (8), described body of heater (1) rectangular body；Surrounding, top and the bottom of described body of heater (1) is equipped with heat-resisting thermal insulation layer (14)；The top of described body of heater (1) is provided with exhaust ventilation pipeline (10)；The retort (3) of multiple setting it is provided with in described body of heater (1)；The charging aperture (4) of described retort (3) is positioned at the top of body of heater (1)；The discharging opening (6) of described retort (3) is connected through the chiller being arranged in body of heater (1) with the transporter being positioned at body of heater (1) bottom, it is characterised in that the cross section of described retort (3) is kidney ellipsoid；Described retort (3) is located in body of heater (1) by rectangular array arrangement interval；The long axis in described retort (3) cross section is parallel with the sidewall of body of heater (1) width；Described reduction furnace also includes heater；Described heater includes the nozzle (9) being positioned at body of heater (1) inwall and outside confession fuel channel (12) connected with nozzle (9) that is positioned at body of heater (1).
2. a kind of reduction furnace as claimed in claim 1, it is characterised in that described nozzle (9) is spaced setting along the sidewall of body of heater (1) length direction；It is provided with retort (3) between adjacent described nozzle (9).
3. a kind of reduction furnace as claimed in claim 2, it is characterised in that described chiller is the cooling hydrosphere (5) being arranged on lower portion of furnace body.
4. a kind of reduction furnace as claimed in claim 3, it is characterised in that described transporter is belt conveyor (7).
5. a kind of reduction furnace as claimed in claim 4, it is characterised in that the inwall of described body of heater (1) is provided with at least one temperature sensor (15)；Described confession fuel channel (12) is provided with at least one pressure transducer (16)；Described temperature sensor (15) and pressure transducer (16) are connected with the computer being located at body of heater (1) outside and control station by wire.
6. a kind of reduction furnace as claimed in claim 5, it is characterised in that described exhaust piping (10) bottom is provided with heat exchanger (11)；Described heat exchanger (11) is connected with nozzle (9) by preheated air pipeline (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620410077.0U CN205653474U (en) | 2016-05-09 | 2016-05-09 | Reducing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620410077.0U CN205653474U (en) | 2016-05-09 | 2016-05-09 | Reducing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205653474U true CN205653474U (en) | 2016-10-19 |
Family
ID=57400774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620410077.0U Expired - Fee Related CN205653474U (en) | 2016-05-09 | 2016-05-09 | Reducing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205653474U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403600A (en) * | 2016-11-22 | 2017-02-15 | 江苏省冶金设计院有限公司 | Gas melt-separation furnace |
-
2016
- 2016-05-09 CN CN201620410077.0U patent/CN205653474U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403600A (en) * | 2016-11-22 | 2017-02-15 | 江苏省冶金设计院有限公司 | Gas melt-separation furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4054444A (en) | Method for controlling the carbon content of directly reduced iron | |
| CN101724726B (en) | Method and device for ironmaking by smelting | |
| CN204981930U (en) | It is complete coal -based from heat supply direct reduction shaft furnace | |
| CN102701608A (en) | Limekiln coproduction device | |
| CN103435276A (en) | Production apparatus of active lime | |
| CN104152620B (en) | For the method and apparatus of powdered iron ore direct-reduction | |
| CN205653474U (en) | Reducing furnace | |
| CN104630407B (en) | A kind of entire body external heat flame-insulating type rotary kiln | |
| CN104446017A (en) | Barrier wall type calcining device | |
| CN201292373Y (en) | Fusion ironmaking apparatus | |
| CN102618684B (en) | Continuous melting reduction iron-making device | |
| CN107227391A (en) | A kind of miberal powder quickly goes back original system | |
| CN104496207B (en) | Heat storage type lime rotary kiln | |
| CN205576193U (en) | Reduction furnace for producing direct -reduced iron | |
| CN2921740Y (en) | Internal and external heating vertical passway reduction furnace | |
| CN206772027U (en) | A kind of improved grid section | |
| CN206553461U (en) | Samming forges coal stove | |
| CN103849759B (en) | Roasting method of efficiently controlling iron ores to be magnetized | |
| CN111426208B (en) | Vertical air draft sintering machine and sintering process | |
| CN204224469U (en) | A kind of dividing wall type roasting assembly | |
| CN106755693A (en) | Hot charging gas-based shaft kiln system and method | |
| CN203373276U (en) | Active lime production device | |
| CN207243925U (en) | A kind of miberal powder that can carry hydrogen quickly goes back original system | |
| CN104215064A (en) | Straight tunnel kiln for direct reduction of iron ore powder | |
| CN107227386A (en) | A kind of miberal powder that can carry hydrogen quickly reduces system and method |
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: 20161019 Termination date: 20180509 |