CN207933488U - A kind of coal base shaft furnace discharge system - Google Patents
A kind of coal base shaft furnace discharge system Download PDFInfo
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- CN207933488U CN207933488U CN201721532784.8U CN201721532784U CN207933488U CN 207933488 U CN207933488 U CN 207933488U CN 201721532784 U CN201721532784 U CN 201721532784U CN 207933488 U CN207933488 U CN 207933488U
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Abstract
Include the level-one discharge with endless screw device being connect with N number of independent reaction room discharge gate of coal base shaft furnace and two level discharge device the utility model discloses a kind of coal base shaft furnace discharge system；The level-one discharge with endless screw device is connect with the three trouble tremie pipes that fall by two sub-feed tubes and an aggregate pipe with high temperature tee joint flap valve；Passage one send the hot material from high temperature tee joint turnover panel into rubber conveyer through cooler, deuterostrophies discharge device, realizes cold row；Hot material from high temperature tee joint flap valve is delivered to through gate valve in high temperature chain mat machine by passage two, realizes heat row.Tthe utility model system can control furnace charge reaction, cooling time to realize furnace charge continuous pulp discharge；It realizes independent between cold discharge and hot discharge and/or switches simultaneously, the temperature of discharge is selected to require to meet different process online；Tthe utility model system corresponds to N number of independent reaction room discharge gate one by one can individually be overhauled using number of modularized combination.
Description
Technical field
The utility model is related to the based shaft kiln directly reduced technical field of coal, and in particular to one kind is by independent reaction room module
Change the discharge system and device of the coal base shaft furnace of combination.
Background technology
Direct reduced iron (also known as sponge iron) due to it with stable components, objectionable impurities is few, low-carbon, close to the property of steel
Many advantages, such as, gradually it has been used as field of steel metallurgy electric furnace steel making raw material, pneumatic steelmaking coolant and field of powder metallurgy
Iron content base-material uses.
Currently, there are many techniques of direct reduced iron production, it is divided into gas base directly reducing from energy angle and coal base is direct
Restore two major classes.Gas base directly reducing technology is using the MIDREX methods for the commercial applications that succeeded and HYL methods as representative, maximum single machine
The size of capacity is up to 2,500,000 tons；Coal-based DR process is using traditional kiln process, tunnel furnace method and rotary hearth furnace method as generation
Table, maximum single machine production capacity are but difficult to break through 300,000 tons.
The one kind of the based shaft kiln directly reduced technique of coal as Coal-based Direct Reduction Technologies, with traditional kiln process, tunnel oven
Method and rotary hearth furnace method are compared, and significant difference is furnace charge in the reaction chamber and is continuous operation from top to bottom, while coal base is perpendicular
The reative cell of stove has number of modularized characteristics of combination, has the large-scale production ability for realizing 1,000,000 tons of single machine or more.
A core key part of the coal base shaft furnace discharge system as the based shaft kiln directly reduced technique of coal, main function and
Function will embody：
1. adjusting the furnace charge reaction time in reative cell by controlling discharge velocity, and realize the stabilization of furnace charge, continuous pulp discharge,
The continuous high-efficient operation for ensureing coal base shaft furnace, stablizes sponge iron product quality；
2. the requirement of coal base shaft furnace reative cell modular combination need to be adapted to simultaneously, to meet coal base shaft furnace large-scale production work
Skill needs；
3. due to the plurality of advantages of sponge iron, application field is wide in range, also further to meet different downstream processes to sponge
The on-line selection requirement of iron dump temperature, to adapt to, client is multi-field, diversification production needs.
At this stage, the MIDREX methods and HYL methods for the commercial applications that either succeeded are the gas base directly reducing skill of representative
Art, or using traditional kiln process, tunnel furnace method and rotary hearth furnace method as the Coal-based Direct Reduction Technologies of representative, discharge system
And device presence is confined in the positioning requirements of specific products, system and device do not have modular combination feature, show
The characteristics of equipment is high, cost of investment is big, prominent single machine scale, or heat row is only selected, or only make full use of heat
Expect that sensible heat selects cold row, it is difficult to while realizing and meeting functionality of the based shaft kiln directly reduced technique of coal to discharge system and device
It is required that.
The coal-based DR process of open explanation at present, as patent ZL201610627643.8,
ZL201520034673.9 and ZL201520034648.0 etc., modular combination only has 300,000 tons of production capacity advantages, for discharge
Also main sides focus in the demand of cold marker method for the requirement of system and device, and downstream process for making is given without hot discharge is highlighted
The energy-saving advantage brought, product programming flexibility is insufficient, exists in terms of adapting to multi-field, diversification production needs
A degree of limitation.
Invention content
The purpose of this utility model is based shaft kiln directly reduced from fitting coal in order to overcome above-mentioned the shortcomings of the prior art
Technology features and manufacturing technique requirent set out, and provide a kind of coal base shaft furnace discharge system, have and adapt to sponge iron production
Product purposes plans flexible, various needs, has that process equipment is simple, reliable, high degree of automation, repair and maintenance are convenient, holds
Easily meet coal base shaft furnace large-scale production needs and the low feature of cost of investment.
Specifically technical solution is：A kind of coal base shaft furnace discharge system includes being arranged with N number of independent reaction room of coal base shaft furnace
The level-one discharge with endless screw device and two level discharge device of material mouth connection；The level-one discharge with endless screw device and pass through two sub-feed tubes
It is connect with high temperature tee joint flap valve with the three trouble tremie pipes that fall of an aggregate pipe；The two level discharge device passes through passage
One, cooler and high temperature tee joint flap valve connect；Passage one is by the hot material from high temperature tee joint turnover panel through cooler, two level spiral shell
Rotation discharge device is sent into rubber conveyer, realizes cold row；Passage two is by the hot material from high temperature tee joint flap valve through plate
Valve is delivered in high temperature chain mat machine, realizes heat row.
The selective discharge technical method that the utility model is taken is：
1. cold row：Temperature is~750 DEG C, the furnace charge containing sponge iron enters level-one discharge with endless screw through coal base shaft furnace discharge gate
Device enters in cooler through falling three trouble tremie pipes, high temperature tee joint flap valve and passage one and is cooled to~50 DEG C, by two level spiral shell
Rotation discharge device is discharged into rubber conveyer, is stored through cold sieve and/or cold pressing, as electric furnace steel making raw materials for metallurgy, rotary furnace cooling agent
And/or powder metallurgy raw material uses.
2. heat row：Temperature is~750 DEG C, the furnace charge containing sponge iron enters level-one discharge with endless screw through coal base shaft furnace discharge gate
Device enters the high temperature chain mat machine filled with inert gas shielding through falling three trouble tremie pipes, high temperature tee joint flap valve and passage two
In after through heat sieve and hot sending, directly as electric furnace steel making raw materials for metallurgy use.
3. cold row and heat are arranged simultaneously：By the coal base shaft furnace of N number of reative cell modular combination, wherein A reaction is indoor to be contained
There is sponge iron furnace charge 1. to implement cold row according to method, 2. N-A reaction is indoor to implement heat containing sponge iron furnace charge according to method
Row；Cold burden is used as electric furnace steel making raw materials for metallurgy, rotary furnace cooling agent and/or powder metallurgy raw material, and hot material is directly as electric furnace
Raw materials for metallurgy is made steel to use.
Preferably, level-one discharge with endless screw device described in the coal base shaft furnace discharge system, which has, bears~750 DEG C of height
Warm discharge and speed-regulating function, are set to the exit site of each independent reaction room discharge gate, and include that there are two symmetrical discharges
Mouthful.
Preferably, the three trouble tremie pipes that fallen described in the coal base shaft furnace discharge system are set to level-one discharge with endless screw device
Lower section, includes two sub-feed tubes and an aggregate pipe, two sub-feed tubes respectively with the symmetrical discharge of level-one discharge with endless screw device
Mouth connection；Three trouble tremie pipes use heat-resistance stainless steel material, and high temperature resistant, anti-wear alloy lining board are provided in pipe, manage outer use
Heat-insulating heat-preserving material coats.
Preferably, high temperature tee joint flap valve described in the coal base shaft furnace discharge system is set to down under three trouble tremie pipes
Side, is connected to the aggregate pipe of tee tube；It is driven using motor, turnover panel uses high temperature resistant, wear resistant alloy material, is provided in pipe
High temperature resistant, anti-wear alloy lining board, pipe is outer to be coated using heat-insulating heat-preserving material.
Preferably, one arrival end of passage described in the coal base shaft furnace discharge system goes out with high temperature tee joint flap valve one
Mouth connection, outlet end is connected to cooler；One arrival end of passage and one outlet of high temperature tee joint flap valve, outlet
End is connected to high temperature gate valve feed inlet；Passage one and two is all made of heat-resistance stainless steel material, and high temperature resistant, resistance to is provided in pipe
Alloy lining is ground, pipe is outer to be coated using heat-insulating heat-preserving material.
Preferably, the cooler being connected to passage one described in the coal base shaft furnace discharge system by material chamber, water cavity,
Water cavity cooling water inlet and water cavity cooling water outlet composition；The cooler is the good hardware of air-tightness.
Preferably, deuterostrophies discharge device arrival end and cooler outlet described in the coal base shaft furnace discharge system
End connection, has speed-regulating function；Deuterostrophies discharge device outlet end is connect with deflector chute above rubber conveyer.
Preferably, the high temperature gate valve outlet end described in the coal base shaft furnace discharge system and high temperature chain mat machine top
Deflector chute is connected to, and high temperature chain mat machine uses the structure type of closed heat preservation, and inert gas is passed through to completely cut off sky in production process
Gas prevents sponge iron from being aoxidized.
The beneficial effects of the utility model are：
(1) speed-regulating function of level-one discharge with endless screw device controls the reaction time of furnace charge in coal base shaft furnace, ensure that sponge
The quality of iron product and stabilization, the continuous service of coal base shaft furnace；The speed-regulating function of two level discharge device effectively controls hot material cold
But sponge iron drop temperature and discharging safety be ensure that cooling time in device；Pass through level-one discharge with endless screw device and two level spiral shell
The control discharge function of revolving discharge device, realizes the continuous pulp discharge of furnace charge, coal base shaft furnace list furnace output has been effectively ensured.
(2) the selectivity switching of high temperature tee joint flap valve, has effectively achieved the selection of dump temperature, to adapt to and meet
Downstream process is to sponge iron product requirement；The sponge iron drop temperature of~700 DEG C of selection is smelted former directly as electric furnace steel making
Material, greatly reduces electric furnace steel making power consumption, can reduce power consumption 100~150kwh/t molten steel.
(3) system provided by the utility model and device correspond to N number of independent reaction room discharge gate one by one, using quantity mould
Blockization combines, and high degree of automation is adapted to coal base shaft furnace large-scale production needs.
(4) modular combination form is used, triangular web and plant failure point do not influence coal base shaft furnace and integrally work continuously
Production, can individually be overhauled, maintenance cost is relatively low, and coal base shaft furnace system continuous high-efficient operation has been effectively ensured.
Description of the drawings
Fig. 1 is the process equipment connection diagram of the utility model；
Fig. 2 is the 1st kind of embodiment structure schematic diagram of the utility model；
Fig. 3 is the 2nd kind of embodiment structure schematic diagram of the utility model；
Fig. 4 is the 1st kind and the 2nd kind embodiment cooler construction schematic diagram of the utility model.
Specific implementation mode
The system and device of the present invention are further described with reference to the accompanying drawings and examples.
Embodiment 1：
As shown in Figure 1, Figure 2 and shown in Fig. 4 schematic diagrames, a kind of coal base shaft furnace discharge system of the present embodiment 1, including a coal base
N number of reative cell discharge gate 1 of shaft furnace, and the level-one discharge with endless screw device that is connected to each reative cell discharge gate 1 under upper cause
2, three trouble tremie pipes 3, high temperature tee joint flap valve 4 and high temperature tee joint flap valve 4 with two sub-feed tubes and an aggregate pipe
The passage 1 of one outlet end connection, the passage 26 being connected to 4 another outlet end of high temperature tee joint flap valve and passage one
Cooler 7, deuterostrophies discharge device 8 and the rubber conveyer 9 of connection and the high temperature gate valve being connected to passage 26
10 and high temperature chain mat machine 11.
Wherein, cooler 7 is made of water cavity 71, material chamber 72, cooling water intake 73 and cooling water outlet 74, cooler
7 be the good hardware of air-tightness.
In conjunction with technical solution noted earlier and preferred descriptions, the selective discharge side of the present embodiment coal base shaft furnace discharge system
Method and the course of work are as follows：
Method 1 and process：Temperature is~750 DEG C, the furnace charge containing sponge iron enters through coal base shaft furnace reative cell discharge gate 1
Level-one discharge with endless screw device 2, through fall three trouble tremie pipes 3, high temperature tee joint flap valve 4 and passage 1 enter it is cooling in cooler 7
It to~50 DEG C, is discharged into rubber conveyer 9 by deuterostrophies discharge device 8, stores through cold sieve and/or cold pressing, refined as electric furnace
Steel smelting raw material, rotary furnace cooling agent and/or powder metallurgy raw material use.
Method 2 and process：Temperature is~750 DEG C, the furnace charge containing sponge iron enters through coal base shaft furnace reative cell discharge gate 1
Level-one discharge with endless screw device 2, through falling three trouble tremie pipes 3, high temperature tee joint flap valve 4 and passage 26 into filled with inert gas
It sieves and is heat-fed through heat after in the high temperature chain mat machine 11 of protection, used directly as electric furnace steel making raw materials for metallurgy.
Method 3 and process：The coal base shaft furnace of N number of reative cell modular combination, wherein A reaction is indoor to contain sponge iron
Furnace charge implements cold row according to method one, and N-A reaction is indoor to implement hot row containing sponge iron furnace charge according to method two；It is wherein cold
Discharge is used as electric furnace steel making raw materials for metallurgy, rotary furnace cooling agent and/or powder metallurgy raw material, and hot discharge is then directly as electric furnace
Raw materials for metallurgy is made steel to use.
Embodiment 2：
Shown in schematic diagram as shown in Figure 1, Figure 3 and Figure 4, a kind of coal base shaft furnace discharge system of the present embodiment 2, including two side by side
N number of reative cell discharge gate 1 of parallel coal base shaft furnace, and the level-one spiral that is connected to each reative cell discharge gate 1 under upper
Discharge device 2, three trouble tremie pipes 3, high temperature tee joint flap valve 4 and high temperature three with two sub-feed tubes and an aggregate pipe
The passage 1 of logical 4 one outlet end of flap valve connection, the passage 26 being connected to 4 another outlet end of high temperature tee joint flap valve,
It the cooler 7, deuterostrophies discharge device 8 and the rubber conveyer 9 that are connected to passage one and is connected to passage 26
High temperature gate valve 10 and high temperature chain mat machine 11.
Wherein, cooler 7 is by 74 groups of water cavity 71, material chamber 72, water cavity cooling water intake 73 and water cavity cooling water outlet
At cooler 7 is the good hardware of air-tightness.
In conjunction with technical solution noted earlier and preferred descriptions, the selective discharge side of the present embodiment coal base shaft furnace discharge system
Method and the course of work are as follows：
Method 1 and process：Temperature is~750 DEG C, the furnace charge containing sponge iron enters through coal base shaft furnace reative cell discharge gate 1
Level-one discharge with endless screw device 2, through fall three trouble tremie pipes 3, high temperature tee joint flap valve 4 and passage 1 enter it is cooling in cooler 7
It to~50 DEG C, is discharged into rubber conveyer 9 by deuterostrophies discharge device 8, stores through cold sieve and/or cold pressing, refined as electric furnace
Steel smelting raw material, rotary furnace cooling agent and/or powder metallurgy raw material use.
Method 2 and process：Temperature is~750 DEG C, the furnace charge containing sponge iron enters through coal base shaft furnace reative cell discharge gate 1
Level-one discharge with endless screw device 2, through falling three trouble tremie pipes 3, high temperature tee joint flap valve 4 and passage 26 into filled with inert gas
It sieves and is heat-fed through heat after in the high temperature chain mat machine 11 of protection, used directly as electric furnace steel making raw materials for metallurgy.
Method 3 and process：The coal base shaft furnace of N number of reative cell modular combination, wherein A reaction is indoor to contain sponge iron
Furnace charge implements cold row according to method one, and N-A reaction is indoor to implement hot row containing sponge iron furnace charge according to method two；It is wherein cold
Discharge is used as electric furnace steel making raw materials for metallurgy, rotary furnace cooling agent and/or powder metallurgy raw material, and hot discharge is then directly as electric furnace
Raw materials for metallurgy is made steel to use.
Advantageous effect caused by example in the utility model：
(1) no matter single stove arrangement or twin furnace arrangement, can control discharge velocity adjustment by level-one discharge with endless screw device
The furnace charge reaction time in reative cell controls furnace charge cooling time by deuterostrophies discharge device, the final stabilization for realizing furnace charge,
Continuous pulp discharge ensures the continuous high-efficient operation of coal base shaft furnace, stablizes sponge iron product quality；
(2) no matter single stove arrangement or twin furnace arrangement, discharge system and device adapt to coal base shaft furnace reaction room module
Change combination to require, coal base shaft furnace large-scale production technique needs can be met；
(3) no matter single stove arrangement or twin furnace arrangement, the plurality of advantages based on sponge iron, application field is wide in range, can basis
On-line selection requirement of the different downstream processes to sponge iron dump temperature, is switched by the selectivity of high temperature tee joint flap valve, is fitted
Answer that client is multi-field, diversification production needs.
(4) it selects~700 DEG C of sponge iron directly as electric furnace steel making raw materials for metallurgy, electric furnace steel making process can be substantially reduced
Power consumption, 100~150kwh/t molten steel of saving energy.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited in above-mentioned specific realities
Mode is applied, the above mentioned embodiment is only schematical, rather than restrictive, and those skilled in the art exist
Under the enlightenment of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, many shapes can be also made
Formula, all of these belong to the protection of the present invention.
Claims (9)
1. a kind of coal base shaft furnace discharge system, it is characterised in that：Including level-one discharge with endless screw device, fall three trouble tremie pipes, high temperature
Threeway flap valve, passage one, cooler, deuterostrophies discharge device, rubber conveyer, passage two, gate valve, high temperature chain
Trigger；The independent reaction room discharge gate of level-one discharge with endless screw device portal connection coal base shaft furnace, outlet is by falling three troubles
Tremie pipe is connect with high temperature tee joint flap valve；The two level discharge device entrance connects cooler outlet, and outlet end is defeated with adhesive tape
Send deflector chute connection above machine；The cooler entrance connects high temperature tee joint flap valve by passage one；The passage one
Hot material from high temperature tee joint turnover panel is sent through cooler, deuterostrophies discharge device into rubber conveyer, realizes cold row；Together
Shi Suoshu gate valves arrival end is connect by passage two with high temperature tee joint flap valve, and outlet end connects high temperature chain mat machine；It is described
Hot material from high temperature tee joint flap valve is delivered to through gate valve in high temperature chain mat machine by passage two, realizes heat row.
2. coal base shaft furnace discharge system according to claim 1, it is characterised in that：The system can in a distributed manner one by one company
The N number of independent reaction room discharge gate for causing coal base shaft furnace is connect, realizes that selective discharging method includes：1. cold row, 2. hot to arrange, 3. together
When cold row and heat arrange.
3. coal base shaft furnace discharge system according to claim 1 or 2, it is characterised in that：The level-one discharge with endless screw device
With high temperature discharge and speed-regulating function is born, it is set to the exit site of the independent reaction room discharge gate of each coal base shaft furnace, and
Including there are two symmetrical discharge gates.
4. coal base shaft furnace discharge system according to claim 1 or 2, it is characterised in that：It is described fall three trouble tremie pipes include
There are two sub-feed tubes and an aggregate pipe, two sub-feed tubes to be connected to respectively with the symmetrical discharge gate of level-one discharge with endless screw device；Institute
It states down three trouble tremie pipes and uses heat-resistance stainless steel material, high temperature resistant, anti-wear alloy lining board are provided in pipe, manage outer using heat-insulated guarantor
Adiabator coats.
5. coal base shaft furnace discharge system according to claim 2, it is characterised in that：The high temperature tee joint flap valve and three
The aggregate pipe connection of trouble tremie pipe, is driven using motor, and turnover panel uses high temperature resistant, wear resistant alloy material, is provided in pipe resistance to
High temperature, anti-wear alloy lining board, pipe is outer to be coated using heat-insulating heat-preserving material.
6. coal base shaft furnace discharge system according to claim 1 or 2, it is characterised in that：The passage one and guide
Pipe two is all made of heat-resistance stainless steel material, and high temperature resistant, anti-wear alloy lining board are provided in pipe, and pipe is outer to use heat-insulating heat-preserving material packet
It covers.
7. coal base shaft furnace discharge system according to claim 1 or 2, it is characterised in that：The cooler is by material chamber, water
Chamber, water cavity cooling water inlet and water cavity cooling water outlet composition；The cooler is the good hardware of air-tightness.
8. coal base shaft furnace discharge system according to claim 1 or 2, it is characterised in that：The deuterostrophies discharge device
With speed-regulating function.
9. coal base shaft furnace discharge system according to claim 1 or 2, it is characterised in that：The high temperature chain mat machine is using close
The structure type close, kept the temperature is passed through inert gas to completely cut off air in production process, prevents hot material from being aoxidized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721532784.8U CN207933488U (en) | 2017-11-16 | 2017-11-16 | A kind of coal base shaft furnace discharge system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721532784.8U CN207933488U (en) | 2017-11-16 | 2017-11-16 | A kind of coal base shaft furnace discharge system |
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| CN207933488U true CN207933488U (en) | 2018-10-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322546A (en) * | 2020-09-30 | 2022-04-12 | 宝山钢铁股份有限公司 | Discharging method and device for rotary hearth furnace |
| CN115058554A (en) * | 2022-08-08 | 2022-09-16 | 卓然(靖江)设备制造有限公司 | Hydrogen-based shaft furnace with internal energy recovery device |
-
2017
- 2017-11-16 CN CN201721532784.8U patent/CN207933488U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322546A (en) * | 2020-09-30 | 2022-04-12 | 宝山钢铁股份有限公司 | Discharging method and device for rotary hearth furnace |
| CN114322546B (en) * | 2020-09-30 | 2024-04-05 | 宝山钢铁股份有限公司 | Discharging method and device for rotary hearth furnace |
| CN115058554A (en) * | 2022-08-08 | 2022-09-16 | 卓然(靖江)设备制造有限公司 | Hydrogen-based shaft furnace with internal energy recovery device |
| CN115058554B (en) * | 2022-08-08 | 2022-11-15 | 卓然(靖江)设备制造有限公司 | Hydrogen-based shaft furnace with internal energy recovery device |
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