CN206504633U - A kind of hot direct reduced iron stove external cooling device - Google Patents
A kind of hot direct reduced iron stove external cooling device Download PDFInfo
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- CN206504633U CN206504633U CN201720170398.2U CN201720170398U CN206504633U CN 206504633 U CN206504633 U CN 206504633U CN 201720170398 U CN201720170398 U CN 201720170398U CN 206504633 U CN206504633 U CN 206504633U
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Abstract
The utility model is related to a kind of hot direct reduced iron stove external cooling device, by being constituted from caching room, distributor chamber, cooling chamber and unloading house；It is provided with distributor chamber on the outside of cylindrical tube and conical shell, cylindrical tube and sequentially forms 3 annular materials passages；The bottom of cylindrical tube and conical shell at the top of outer casing of cooling chamber and 3 toroidal membranes with connecting one to one, and cooling chamber is radially divided into internal layer annular cooling space, center annular cooling space and outer annular cooling space by toroidal membrane；Multiple cooling walls are circumferentially evenly provided with cooling chamber, cooling chamber radially and is circumferentially divided into multiple cooling cell compartments with vertical material decline passway by each toroidal membrane and each cooling wall.The utility model realizes the centralization and maximization of direct-reduction iron mixture stove external cooling device, it is ensured that the reduction iron mixture cooling effect uniformity discharged after cooling, while also having the function of storage DRI.
Description
Technical field
The utility model is related to Coal-based Direct Reduction Technologies field, more particularly to a kind of hot direct reduced iron stove
External cooling device.
Background technology
In coal base upright furnace production Direct Reducing Iron Process, after being cooled down in stove, the DRI of upright furnace discharge
Mixture (DRI, carbon residue and ash content) temperature is about 300~400 DEG C.There is very high change in view of DRI
Activity is learned, at this temperature, easily occurs spontaneous combustion and even explodes and fire, therefore DRI must be cooled to certain temperature
Afterwards could be by the transport and storage of safety.
The outer cooling means of direct-reduction iron furnace is mainly cooled down by the way of direct water-cooling or indirect water-cooling at present, its
Although middle direct water-cooling cooling effectiveness is high, material easily bursts, and iron is produced the amount ratio of ferroso-ferric oxide by water oxygen metaplasia
The more degree of metalization so as to reduce iron；Indirect water-cooling is mainly cooled down in the following manner：Under vertical grate material mouth
Side sets water cooled membrane wall or water cold sleeve to cool down direct-reduction iron mixture indirectly, but this kind of type of cooling has following
It is not enough：(1) water cooled membrane wall or water cold sleeve occupy certain spatial altitude so that the increase of upright furnace spatial altitude, so as to increase
Construction cost and difficulty are added；(2) under engineered conditions, due to needing all to set water cooling below every discharge gate of upright furnace
Membrane wall or water cold sleeve, it means that whole engineering can set many water cooled membrane walls or water cold sleeve, and cooling device can not
Realize centralization.
Traditional water cooled membrane wall or water cold sleeve are integrally rounded or square, exchange heat from inside to outside.Close to cooling wall
Material moves down speed because the resistance of cooling wall moves down speed less than the material of center, thus center material cold
But the residence time in device is less than the residence time close to cooling wall material.The material of other center and water cooled membrane wall or
The heat transfer efficiency of water cold sleeve is more much smaller than the material of close cooling wall.2 reasons based on more than, traditional water cooled membrane
Material after wall or water cold sleeve larger-scale unit due to its center is increased apart from cooling wall distance, and cooling effect is not good.
Therefore, current cooling device can not realize centralization and maximization, it is impossible to meet DRI production scale
The requirement constantly expanded.
The content of the invention
The utility model provides a kind of hot direct reduced iron stove external cooling device, realizes direct-reduction iron mixture
The centralization and maximization of stove external cooling device, and the reduction iron mixture cooling effect uniform one discharged after cooling can be ensured
Cause, while also having the function of storage DRI.
In order to achieve the above object, the utility model is realized using following technical scheme：
A kind of hot direct reduced iron stove external cooling device, including cooling device；The cooling device by from top to bottom according to
It is secondary that caching room, distributor chamber, cooling chamber and unloading house's composition are set；Caching sets charging aperture at the top of room；In distributor chamber from inside to outside
Coaxially it is provided with 1 cylindrical tube and 3 conical shells, wherein cylindrical tube top seal, the outside of cylindrical tube
Sequentially forming 3 has the annular materials passage of bell mouth shape of drops down；The bottom of cylindrical tube and conical shell with
Connected one to one at the top of outer casing of cooling chamber and 3 toroidal membranes, cooling chamber is radially divided into inner layer ring by toroidal membrane
Shape cooling space, center annular cooling space and outer annular cooling space；Circumferentially it is evenly provided with cooling chamber multiple cold
Cooling chamber radially and circumferential is divided into the multiple of vertical material decline passway by but wall, each toroidal membrane and each cooling wall
Cool down cell compartment；Unloading house bottom sets discharge gate.
The cooling wall is made up of the long cooling wall, middle cooling wall and short cooling wall for being spaced and being circularly set successively, wherein
Long cooling wall is arranged on internal layer annular cooling space into outer annular cooling space elongatedly, and middle cooling wall is arranged on elongatedly
Center annular cools down space into outer annular cooling space, and short cooling wall is arranged in outer annular cooling space elongatedly.
The setting spacing distance of the long cooling wall, middle cooling wall and short cooling wall is 300~600mm.
The charging aperture of the caching room connects the discharging opening of upright furnace by heat-resisting chain scraper conveyor.
The caching is indoor be provided with level-sensing device, unloading house along same level section center and be circumferentially with it is multiple online
Temperature measuring equipment, level-sensing device is connected control system respectively with temperature measurement on-line device.
In unloading house below the temperature measurement on-line device multiple backgauge rod sockets are provided with along same level sectional uniform.
The cooling wall is made up of side by side multiple wear-resisting seamless steel pipes, and wear-resisting steel plate is passed through between neighbouring wear-resistant seamless steel pipe
It is fixedly connected；The cooling water that the bottom of wear-resisting seamless steel pipe is intake outside rectangular duct connection cooling device by cooling water, which is intake, to be justified
Shape pipeline；The cooling water water outlet that the top of wear-resisting seamless steel pipe is connected by cooling water water outlet rectangular duct outside cooling device is circular
Pipeline.
Compared with prior art, the beneficial effects of the utility model are：
1) simple and reasonable, manufacturing cost is low, realizes the centralization of direct-reduction iron mixture cooling device and big
Typeization requirement；
2) cooled down by cooling chamber lattice, and the combination of unloading house's temperature measurement on-line and backgauge rod is adjusted, it is ensured that cooling dress
Put the cooling effect uniformity of the direct-reduction iron mixture of discharge；
3) cooling and integrated transit-inventory outside the stove of hot direct reduced iron are realized, construction investment cost is saved.
Brief description of the drawings
Fig. 1 is the front view of cooling device described in the utility model.
Fig. 2 is the A-A sectional views in Fig. 1.
Fig. 3 is the B-B sectional views in Fig. 1.
Fig. 4 is the C-C sectional views in Fig. 1.
Fig. 5 is the D-D sectional views in Fig. 2.
Fig. 6 is the E-E sectional views in Fig. 2.
Fig. 7 is the F-F sectional views in Fig. 2.
Fig. 8 is the G-G sectional views in Fig. 5.
In figure：1. the heat-resisting caching of chain scraper conveyor 2. room 3. distributor chamber, 4. cooling chamber, 5. unloading house 6. level-sensing device
7.1# conical shell 8.2# conical shell 9.3# conical shells 10. cylindrical tube, 11. distributor chamber stiffener plates 12. are cold
But the cooling chamber stiffener plate 14.1# toroidal membrane 15.2# toroidal membrane 16.3# toroidal membranes 17. of chamber enclosure 13. are short cold
But the long cooling wall 20.1# cooling cell compartment 21.2# cooling cell compartment 22.3# coolings cell compartment 23. of cooling wall 19. is resistance in wall 18.
Grind the cooling water water inlet circular pipe 26. cooling water water inlet cooling water of rectangular duct 27. of 24. wear-resisting steel plate of seamless steel pipe 25.
The electronic backgauge rod of 30. temperature measurement on-line device of form valve 31. of 28. cooling water water outlet circular pipe of water outlet rectangular duct 29.
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
A kind of hot direct reduced iron stove external cooling device described in the utility model, including cooling device；The cooling dress
Put and constituted by setting gradually caching room 2, distributor chamber 3, cooling chamber 4 and unloading house 5 from top to bottom；The top of caching room 2 sets charging
Mouthful；1 cylindrical tube 10 and 3 conical shells 7~9, wherein cylindrical tube are coaxially provided with distributor chamber 3 from inside to outside
10 top seals, the outside of cylindrical tube 10 sequentially forms 3 annular materials passages with the bell mouth shape of drops down；
The bottom of cylindrical tube 10 and conical shell 7~9 and the top one of the shell 12 of cooling chamber 4 and 3 toroidal membranes 14~16
Cooling chamber 4 is radially divided into internal layer annular cooling space, center annular and cools down sky by one corresponding connection, toroidal membrane 14~16
Between and outer annular cool down space；Multiple cooling walls 17~19, each toroidal membrane 14 are circumferentially evenly provided with cooling chamber 4
~16 and each cooling wall 17~19 cooling chamber 4 radially and circumferential is divided into multiple coolings with vertical material decline passway
Cell compartment 20~22；The bottom of unloading house 5 sets discharge gate.
The cooling wall 17~19 is by the long cooling wall 19, middle cooling wall 18 and short cooling wall that are spaced and are circularly set successively
17 compositions, wherein long cooling wall 19 is arranged on internal layer annular cooling space into outer annular cooling space elongatedly, middle cooling
Centrally disposed annular cooling space is into outer annular cooling space elongatedly for wall 18, and short cooling wall 17 is set outside elongatedly
In layer annular cooling space.
The setting spacing distance of the long cooling wall 19, middle cooling wall 18 and short cooling wall 17 is 300~600mm.
The charging aperture of the caching room 2 connects the discharging opening of upright furnace by heat-resisting chain scraper conveyor 1.
Be provided with the caching room 2 in level-sensing device 6, unloading house 5 center in same level section and be circumferentially with it is multiple
Line temperature measuring equipment 30, level-sensing device 6 is connected control system respectively with temperature measurement on-line device 30.
Inserted in the unloading house 5 of the lower section of temperature measurement on-line device 30 along same level sectional uniform provided with multiple backgauge rods
Mouthful.
The cooling wall 17~19 is made up of side by side multiple wear-resisting seamless steel pipes 23, is led between neighbouring wear-resistant seamless steel pipe 23
Wear-resisting steel plate 24 is crossed to be fixedly connected；The bottom of wear-resisting seamless steel pipe 23 connects cooling device by cooling water water inlet rectangular duct 26
Outer cooling water water inlet circular pipe 25；The top of wear-resisting seamless steel pipe 23 connects cold by cooling water water outlet rectangular duct 27
But the cooling water water outlet circular pipe 28 outside device.
Cooling means outside a kind of hot direct reduced iron stove based on device described in the utility model, comprises the following steps：
1) the hot direct reduced iron mixture of upright furnace discharge, is delivered to above cooling device through heat-resisting chain scraper conveyor 1,
Caching room 2 is entered by charging aperture；
2) the material position information cached in room 2 is uploaded to control system by level-sensing device 6 in real time；Preset in control system in material position
Limit value and material position lower limit, when caching the material position in room 2 higher than material position higher limit, heat-resisting chain scraper conveyor 1 stops to caching
Cloth in room 2；When caching the material position in room 2 less than material position lower limit, unloading house 5 stops outside discharge；And ensure cooling dress
Distributor chamber 3, cooling chamber 4 and unloading house 5 in putting are full of material all the time；
3) distributor chamber 3 is used to the material cached in room 2 being evenly distributed in cooling chamber 4；By cylindrical tube 10 and cone
Material correspondence is assigned in cooling chamber 4 by 3 toroidal membranes 14~16 by 3 annular materials passages that shape cylinder 7~9 is constituted
In 3 layers of cooling space being separated to form, and further moved down along the vertical material decline passway of each cooling cell compartment 20~22；
4) in each cooling cell compartment 20~22, cooling water enters from the lower section of cooling wall 17~19, from cooling wall 17~19
Side's outflow, by the indirect cooling effect of each cooling wall 17~19, makes material reach the temperature that can be transported safely and store；
5) unloading house 5 is used to the material after cooling uniformly discharging cooling device；Unloading house 5 sets on same level section
There are multiple temperature measurement on-line devices 30, measured temperature of charge data are uploaded to control system by temperature measurement on-line device 30 in real time；
The lower section of temperature measurement on-line device 30 is provided with multiple backgauge rod sockets along same level section；What if certain temperature measurement on-line device 30 was measured
Temperature of charge is higher, shows that the material decrease speed near the temperature measuring point is fast, and the cooling residence time is not enough, then by the online survey
The backgauge rod 31 of the warm lower section of device 30 is encrypted, and makes the material decrease speed in correspondence material channel slow；, whereas if certain is online
The temperature of charge that temperature measuring equipment 30 is measured is relatively low, shows that the material decrease speed near the temperature measuring point is partially slow, cools down the residence time
It is long, then the backgauge rod 31 of the lower section of temperature measurement on-line device 30 is reduced, add the material decrease speed in correspondence material channel
It hurry up；So that the temperature of charge that unloading house 5 discharges reaches unanimity；The discharge gate of unloading house 5 sets the electronic form valve 29 of frequency control,
The discharge cooling device of the material after design temperature will be cooled to.
Following examples are implemented lower premised on technical solutions of the utility model, give detailed embodiment
With specific operating process, but protection domain of the present utility model is not limited to following embodiments.Side used in following embodiments
Method is conventional method unless otherwise instructed.
【Embodiment】
The present embodiment is mixed the DRI that upright furnace is discharged using a kind of hot direct reduced iron stove external cooling device
Compound is cooled to the temperature (being usually less than 100 DEG C) that can be transported and store, the direct-reduction iron mixture of upright furnace discharge
The cooling device is delivered to through heat-resisting chain scraper conveyor, whole transportation can realize whole sealing, at utmost reduced outside dust
Ease.
The top layout of caching room 2 of cooling device has level-sensing device 6, and level-sensing device 6 uploads the material position information for caching room 2 in real time
To control system.A highest material position higher limit and a minimum material position lower limit are preset in control system, when surveying material
When position is higher than material position higher limit, stop heat-resisting chain scraper conveyor 1 cloth into caching room 2.When material position is less than material position lower limit,
Electronic form valve 29 stops outside discharge.And when caching the material position of room 2 even at minimum material position, also should be ensured that distributor chamber 3, it is cold
But it is full of material in room 4 and unloading house 5；
The main function of distributor chamber 3 is to evenly distribute the material cached in room 2 to cooling chamber 4.See Fig. 1, distributor chamber by
1~3# the conical shells 7~9 and cylindrical tube 10 being arranged concentrically are constituted, and wherein the 1# conical shells of outer layer are used as and divided simultaneously
Shell with room.The drum surface lining that material flows through region sets abrasion-proof backing block, the top seal of cylindrical tube 10.In order to ensure
Distributor chamber 3 has enough working strengths, and stiffener plate 11 is set between 1~3# conical shells 7~9 and cylindrical tube 10 and is connected
It is fixed.
The main function of cooling chamber 5 is to cool down the material for flowing through cooling chamber 5 indirectly with cooling water, and being cooled to material can
The temperature transported safely and stored.As shown in Fig. 2 1~3# toroidal membranes 14~16, outer casing of cooling chamber 12,1~3# cooling walls
Cooling chamber 5 is separated into multiple independent cooling cell compartments by 17~19, is divided into the cooling cell compartment 20~22 of 1~3# three types；It is cold
But the vertical material channel of the formation of cell compartment 20~22, the spacing of both sides cooling wall 17,18,19 within the scope of 300~600mm,
It ensure that the cooling effect of center material in cooling cell compartment 20~22.Because the length that 1# cools down lattice 20 is larger, in order to protect
Its working strength is demonstrate,proved, the stiffener plate 13 for installing annular in the interposition of radial direction is fixedly connected.See Fig. 5~Fig. 8, cooling water
Water inlet pipe 25~26 enters wear-resisting seamless steel pipe 23 from the lower section of each cooling wall, and cooling water outlet pipe 27~28 is from the upper of cooling wall
The wear-resisting seamless steel pipe 23 of side's outflow.
The main function of unloading house 6 is that the material for cooling down cooling chamber 5 uniformly discharges cooling device.Fig. 3 is seen, in discharge
9 temperature measurement on-line devices 30 are arranged on the same level section of room 6 altogether, the central spot of the horizontal cross-section arranges 1, remaining
8 uniform in radiuses such as the outsides of central point, and interval angles are 45 °；Temperature measurement on-line device 30 is real by measured temperature parameter
When be uploaded to control system.Fig. 4 is seen, along being evenly arranged 24 gears in the same direction on the same level section of the lower section of temperature measurement on-line device 30
Charge bar jack, by adjusting the quantity of backgauge rod 31, makes to reach unanimity eventually through the temperature of charge that electronic form valve 29 is discharged.
1~3# cooling walls 17~19 are welded by wear-resisting seamless steel pipe 23 and the interval of wear-resisting steel plate 24.
1~3# toroidal membranes and outer casing of cooling chamber are made up of concentric cylindrical wear-resisting steel plate.
As shown in Figure 5, Figure 8, the cooling water inlet pipe is by cooling water water inlet circular pipe 25 and cooling water water inlet rectangle
Pipeline 26 is constituted, and cooling water water inlet circular pipe 25 is connected before cooling device is entered with cooling water water inlet rectangular duct 26.
Cooling water outlet pipe is made up of 27 groups of cooling water water outlet rectangular duct and cooling water water outlet circular pipe 28, cooling water water outlet rectangle
Pipeline 27 is connected after cooling device is gone out with cooling water water outlet circular pipe 28.
It is described above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model is disclosed, according to this practicality
New technical scheme and its utility model design are subject to equivalent substitution or change, should all cover in protection model of the present utility model
Within enclosing.
Claims (7)
1. a kind of hot direct reduced iron stove external cooling device, it is characterised in that including cooling device；The cooling device is by certainly
Caching room, distributor chamber, cooling chamber and unloading house's composition are set gradually under above；Caching sets charging aperture at the top of room；In distributor chamber
1 cylindrical tube and 3 conical shells, wherein cylindrical tube top seal, cylindrical tube are coaxially provided with from inside to outside
3 are sequentially formed on the outside of body has the annular materials passage of bell mouth shape of drops down；Cylindrical tube and conical shell
Bottom with being connected one to one at the top of outer casing of cooling chamber and 3 toroidal membranes, toroidal membrane radially separates cooling chamber
For internal layer annular cooling space, center annular cooling space and outer annular cooling space；Circumferentially equably set in cooling chamber
There are multiple cooling walls, cooling chamber radially and is circumferentially divided into decline with vertical material by each toroidal membrane and each cooling wall leads to
Multiple cooling cell compartments in road；Unloading house bottom sets discharge gate.
2. a kind of hot direct reduced iron stove external cooling device according to claim 1, it is characterised in that the cooling wall
It is made up of the long cooling wall, middle cooling wall and short cooling wall that are spaced and are circularly set successively, wherein long cooling wall is set elongatedly
In internal layer annular cooling space into outer annular cooling space, centrally disposed annular cools down space extremely to middle cooling wall elongatedly
In outer annular cooling space, short cooling wall is arranged in outer annular cooling space elongatedly.
3. a kind of hot direct reduced iron stove external cooling device according to claim 2, it is characterised in that the long cooling
The setting spacing distance of wall, middle cooling wall and short cooling wall is 300~600mm.
4. a kind of hot direct reduced iron stove external cooling device according to claim 1, it is characterised in that the caching room
Charging aperture pass through heat-resisting chain scraper conveyor connect upright furnace discharging opening.
5. a kind of hot direct reduced iron stove external cooling device according to claim 1, it is characterised in that the caching room
It is interior to be provided with level-sensing device, in unloading house along same level section center and be circumferentially with multiple temperature measurement on-line devices, level-sensing device and
Temperature measurement on-line device connects control system respectively.
6. a kind of hot direct reduced iron stove external cooling device according to claim 5, it is characterised in that the online survey
In unloading house below warm device multiple backgauge rod sockets are provided with along same level sectional uniform.
7. a kind of hot direct reduced iron stove external cooling device according to claim 1, it is characterised in that the cooling wall
It is made up of, is fixedly connected between neighbouring wear-resistant seamless steel pipe by wear-resisting steel plate side by side multiple wear-resisting seamless steel pipes；It is wear-resisting seamless
The bottom of steel pipe connects the cooling water water inlet circular pipe outside cooling device by cooling water water inlet rectangular duct；Wear-resisting seamless steel
The top of pipe connects the cooling water water outlet circular pipe outside cooling device by cooling water water outlet rectangular duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720170398.2U CN206504633U (en) | 2017-02-24 | 2017-02-24 | A kind of hot direct reduced iron stove external cooling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720170398.2U CN206504633U (en) | 2017-02-24 | 2017-02-24 | A kind of hot direct reduced iron stove external cooling device |
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| Publication Number | Publication Date |
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| CN206504633U true CN206504633U (en) | 2017-09-19 |
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| CN201720170398.2U Active CN206504633U (en) | 2017-02-24 | 2017-02-24 | A kind of hot direct reduced iron stove external cooling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802088A (en) * | 2017-02-24 | 2017-06-06 | 中冶焦耐(大连)工程技术有限公司 | A kind of hot direct reduced iron stove external cooling device and method |
-
2017
- 2017-02-24 CN CN201720170398.2U patent/CN206504633U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802088A (en) * | 2017-02-24 | 2017-06-06 | 中冶焦耐(大连)工程技术有限公司 | A kind of hot direct reduced iron stove external cooling device and method |
| CN106802088B (en) * | 2017-02-24 | 2022-12-13 | 中冶焦耐(大连)工程技术有限公司 | External cooling device and method for thermal state direct reduction iron furnace |
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