CN207031478U - Miberal powder also original system - Google Patents
Miberal powder also original system Download PDFInfo
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- CN207031478U CN207031478U CN201720913227.4U CN201720913227U CN207031478U CN 207031478 U CN207031478 U CN 207031478U CN 201720913227 U CN201720913227 U CN 201720913227U CN 207031478 U CN207031478 U CN 207031478U
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Abstract
The utility model discloses a kind of miberal powder also original system, including：Reactor, heater and gas distributor, reactor includes feed zone, reduction section and cooling section, reduction section is located at the lower section of feed zone and connected with feed zone, cooling section connects below reduction section and with reduction section, the top of feed zone is provided with charging aperture, the bottom of cooling section is provided with discharging opening, and the side wall of reactor is provided with reduction offgas outlet and also Primordial Qi entrance；Heater is located in reduction section to provide heat to the reduction reaction in reduction section；Gas distributor is located in feed zone, and gas distributor has gas feed and opening up gas vent, gas feed and gas outlet, and the miberal powder that gas distributor is configured to fall in feed zone dispels so that miberal powder dispersedly falls into reduction section.According to the miberal powder of the utility model embodiment also original system, miberal powder can fully be broken up by gas distributor, increase the contact area of miberal powder and reducing gas.
Description
Technical field
Metallurgical technology field is the utility model is related to, more particularly, to a kind of miberal powder also original system.
Background technology
In correlation technique, direct reduction processes of Iron ores is the cutting edge technology of development of iron ＆ steel industry, is development of iron ＆ steel industry pendulum
The yoke of decoking coal resource, reduce energy consumption, reduce CO2Discharge, improve steel products structure, improve the important of steel products quality
Developing direction.DRI is the substitute of high-quality steel scrap, is the source of iron raw material that can not be short for producing high-quality clean steel,
It is the high-quality cooling agent of pneumatic steelmaking.
At present, reach commercial production levels or be still broadly divided into two classes in the direct reduction process for continuing experiment：Use gas
The direct-reduction process of body reducing agent and the direct-reduction process using solid reductant.Wherein, directly going back using gaseous reducing agent
Former method is divided and can be divided into three classes by process equipment, including shaft furnace process, retort process making sponge iron and fluidized bed process.
Shaft furnace process (such as Midrex methods) refers to furnace charge and coal gas reverse movement in stove, and the furnace charge of decline is progressively by coal gas
Heating and the method for reduction.However, shaft furnace process can only handle lump material, it is impossible to directly handle powdery iron ore, handle powdery
Agglomeration is needed during iron ore, the shortcomings that tedious process and power consumption water consumption, less economical be present；Retort process making sponge iron (such as Mexico
HyL methods) refer to that furnace charge is fixed in retort, it is passed through thermal reduction coal gas and is preheated, reduced and cooled down successively, it is finally fixed
Phase stops the supple of gas or steam, and outside furnace charge drain tank, however, retort process making sponge iron has coal gas using poor, heat consumption is big, the shortcomings that product quality inequality；
Fluidized bed process is the method that gas reduction Iron Ore Powder is used in fluid bed, and in fluidized bed process generating process, particulate miberal powder is very easy to stick
Knot, is typically operated at 600-700 DEG C of not high temperature, and not only reduction rate is little, and easily facilitates CO analysis carbon to react,
Hinder normal operating.Therefore, a kind of miberal powder also original system for reducing energy consumption, improving reduction gas utilization rate how is designed, is turned into
The problem of urgent need to resolve at present.
Utility model content
The utility model is intended at least solve one of technical problem present in prior art.Therefore, the utility model carries
Go out a kind of miberal powder also original system, the miberal powder of the miberal powder also original system can fully contact with also Primordial Qi, and energy consumption is low and also Primordial Qi is sharp
High and simple to operate with rate, running is easily controllable.
According to the miberal powder of the utility model embodiment also original system, including：Reactor, the reactor include feed zone,
Reduction section and cooling section, the reduction section are located at the lower section of the feed zone and connected with the feed zone, and the cooling section is set
Connected below the reduction section and with the reduction section, the top of the feed zone is provided with charging aperture, the bottom of the cooling section
Portion is provided with discharging opening, and the side wall of the reactor is provided with reduction offgas outlet and also Primordial Qi entrance, the reduction offgas outlet
And the also Primordial Qi entrance is disposed between the charging aperture and the discharging opening in the vertical direction, and described go back protocercal tail
Gas exports and the also Primordial Qi entrance connects with the reduction section；Heater, the heater are located at the reduction section
It is interior, and it is respectively equipped with burner including multiple heat accumulation type radiant tubes, the both ends of the heat accumulation type radiant tube；Gas distributor, institute
Gas distributor is stated to be located in the feed zone, under the charging aperture, the gas distributor have gas feed and
Opening up gas vent, the gas feed are connected with the gas vent, and the gas distributor is configured to institute
The miberal powder to fall in feed zone is stated to dispel so that the miberal powder dispersedly falls into the reduction section.
, can be with by setting gas distributor in reactor according to the miberal powder of the utility model embodiment also original system
Miberal powder is fully broken up by gas distributor, so as to effectively increase the contact area of miberal powder and reducing gas, accelerated
Reduction reaction rate, improves the utilization rate of reducing gas and the utilization rate of system thermal, improves miberal powder also original system
Production efficiency and the energy consumption for reducing miberal powder also original system.Simultaneously by by charging aperture, reduction offgas outlet, also Primordial Qi entrance and
Discharging opening is disposed on reactor successively from top to bottom, can make full use of the heat in miberal powder also original system, there is provided
Heat utilization efficiency, reduce energy consumption and operating cost.
According to some embodiments of the utility model, the gas distributor includes：Sprue, the sprue are provided with
The gas feed；With multiple runners, each runner is connected with the sprue, and each runner is provided with
At least one gas vent.
According to some specific embodiments of the present utility model, the sprue is horizontally extending, multiple shuntings
Road is arranged at intervals on the length direction of the sprue, and each runner runs through on the width of the sprue
The sprue and each runner is bisected into two sections by the sprue.
According to some further embodiments of the present utility model, at least one gas outlet is provided with escape pipe, institute
The upper end for stating escape pipe is provided with anti-blocking portion, and the cross-sectional area in the anti-blocking portion is gradually reduced on direction from bottom to up.
Specifically, the anti-blocking portion is formed as cone shape, the folder between the bus and its center line in the anti-blocking portion
Angle α meets：30°≤α≤60°.
According to some embodiments of the utility model, the length of the runner is L, the gas on the runner
The gross area of outlet is S, and the ratio of the L and S meet：8≤L/S≤10.
According to some embodiments of the utility model, the spacing d between the two neighboring runner meets：80mm≤d
≤120mm。
According to some further embodiments of the present utility model, the cooling section includes：Air-cooled section, described air-cooled section of side
Wall is provided with the also Primordial Qi entrance, is provided with described air-cooled section and the air distribution plate that also Primordial Qi entrance connects；With water cooling section,
The water cooling section is located at described air-cooled section of lower section, and the side wall of the water cooling section is provided with water-cooling wall.
Further, the reactor also includes：Push-pull valve, the push-pull valve are located in the feed zone and positioned at described
The top of gas distributor, the push-pull valve include spaced more sub- push-pull valves in the vertical direction, adjacent during charging
Two sub- push-pull valves alternately open and close to carry out material envelope to the reactor.
According to some further embodiments of the present utility model, the reactor also includes cloth materials and parts, and the cloth materials and parts are set
Between the push-pull valve and the gas distributor, the cloth materials and parts are provided with multiple spaced cloth holes.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment
Become obvious and be readily appreciated that, wherein：
Fig. 1 is the structural representation according to the miberal powder also original system of the utility model embodiment.
Fig. 2 is the top view according to the gas distributor of the utility model embodiment；
Fig. 3 is the top view according to the runner of the gas distributor of the utility model embodiment；
Fig. 4 is the side view according to the runner of the gas distributor of the utility model embodiment.
Reference：
Miberal powder also original system 100,
Reactor 1, feed zone 11, reduction section 12, cooling section 13, air-cooled section 131, water cooling section 132, water-cooling wall 1321,
Fluid intake 1322, fluid issuing 1323,
Charging aperture 141, offgas outlet 142, also Primordial Qi entrance 143 are reduced, discharging opening 144, fuel gas inlet 145, flue gas goes out
Mouth 146,
Gas distributor 2, sprue 21, gas feed 210, runner 22, gas vent 220, escape pipe 221 are anti-blocking
Portion 2211,
Upper push-pull valve 31, underthrust plate valve 32,
Cloth materials and parts 4,
Heat accumulation type radiant tube 5,
Raw material cabin 61, bucket carry 62, spiral discharging machine 63.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model
Limitation.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " axial direction ", " footpath
To ", the orientation of the instruction such as " circumference " or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of and retouch
State the utility model and simplify and describe, rather than instruction or imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, define " first ", "
One or more this feature can be expressed or be implicitly included to two " feature.In description of the present utility model, unless
It is otherwise noted, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
Miberal powder also original system 100 below with reference to Fig. 1-Fig. 4 descriptions according to the utility model embodiment.Wherein, miberal powder
Grain diameter can be between 0.05mm~10mm, and miberal powder also original system 100 can quickly be reduced to above-mentioned miberal powder.Example
Such as, can be by miberal powder direct reduction iron making etc..
As shown in figure 1, included according to the miberal powder of the utility model one embodiment also original system 100：Reactor 1, heating
Device and gas distributor 2.
Specifically, reactor 1 includes feed zone 11, reduction section 12 and the cooling section 13 to communicate with each other, and reduction section 12 is located at
The lower section of feed zone 11 simultaneously connects with feed zone 11, and cooling section 13 connects located at the lower section of reduction section 12 and with reduction section 12.Reference
Fig. 1, feed zone 11, reduction section 12 and cooling section 13 set gradually and communicated with each other in the vertical direction.
The top of feed zone 11 is provided with charging aperture 141, and the bottom of cooling section 13 is provided with discharging opening 144, the side wall of reactor 1
Reduction offgas outlet 142 and also Primordial Qi entrance 143 are provided with, reduction offgas outlet 142 and also Primordial Qi entrance 143 are in above-below direction
On be disposed between charging aperture 141 and discharging opening 144, charging aperture 141 connects with feed zone 11, reduction offgas outlet 142,
Also Primordial Qi entrance 143 and discharging opening 144 connects with reduction section 12.
Reference picture 1, feed hopper is limited in feed zone 11, reduction chamber is limited in reduction section 12, charging aperture 141 is with entering
Hopper connects.Alternatively, feed hopper can be formed as the shape that cross-sectional area is gradually reduced from top to bottom.Reduce offgas outlet
142 can form the bottom on the top of reduction section 12 or feed zone 11, and also Primordial Qi entrance 143 can be formed in reduction section 12
Bottom or formed on cooling section 13.Heater is located in reduction section 12 to provide the reduction reaction in reduction section 12
Heat, offer advantage is carried out for reduction reaction.Actual temp in reduction section 12 can be according to specific reduction reaction
Adjustment.For example, in a specific embodiment of the present utility model, the temperature reduced in chamber can be heated to by heater
900 DEG C~1200 DEG C.The reducing gas that reduction reaction occurs with miberal powder can be passed through in reactor 1 from also Primordial Qi entrance 143, instead
Reduction tail gas after answering can be discharged to outside reactor 1 from reduction offgas outlet 142, the reduction obtained in miberal powder also original system 100
When product is fallen in cooling section 13 under gravity, it can be cooled in cooling section 13.
For example, in the example of fig. 1, charging aperture 141 can be formed can form in the top of reactor 1, discharging opening 144
In the bottom of reactor 1, also Primordial Qi entrance 143 and reduction offgas outlet 142 is formed in the side wall of reactor 1, and also Primordial Qi
Entrance 143 is located at the lower section of heater, and reduction offgas outlet 142 is located at the top of heater.Alternatively, reducing gas can
Think CO and H2 mixture, the reduction reaction mechanism of miberal powder and reducing gas is：MexOy+CO → Me+CO2, MexOy+H2 →
Me+H2O。
Thus, reducing gas is entered in reactor 1 and risen by also Primordial Qi entrance 143, can be with the miberal powder of whereabouts
Reverse contact so that miberal powder can fully contact with reducing gas in reduction section 12, so that miberal powder and also Primordial Qi
Body fully reacts, and improves the utilization rate of reducing gas, reduces energy consumption.After the completion of reaction, the reduzate of generation leads to
Cross discharging opening 144 and discharge reactor 1, the reduction tail gas of high temperature discharges reactor 1 by reducing offgas outlet 142.
Simultaneously as reduction offgas outlet 142 is located at the top of heater, reacted high temperature reduction exhaust gas flow direction is also
It can be contacted during former offgas outlet 142 with the miberal powder (miberal powder not reacted with reducing gas) to be fallen from feed zone 11, from
And the reduction tail gas of high temperature can be exchanged heat with above-mentioned miberal powder, miberal powder is preheated by reducing tail gas, advantageously reduced
Miberal powder reaction before heating-up time and improve the utilization rate of system thermal, reduce the energy consumption of miberal powder also original system 100, and then
The overall time of reduction reaction is shortened, production efficiency is improved, reduces production cost.
Further, since discharging opening 144 is located at the lower section of also Primordial Qi entrance 143, so as to the reduzate of reduction reaction generation
Can contact with the reducing gas being passed through in reduction section 12 and exchange heat in dropping process so that the temperature reduction of reduzate, on
The temperature rise of the reducing gas risen, can be achieved the preheating of reducing gas and the cooling of reduzate, reduces reduzate quilt
The risk of oxidation, the stability of reduzate is ensure that, further reduce the heating-up time before reducing gas reaction, improve
The utilization rate of heat, when reducing the energy consumption of miberal powder also original system 100, and then further shortening the entirety of reduction reaction
Between, production efficiency is improved, reduces production cost.
Specifically, heater includes multiple heat accumulation type radiant tubes 5, and multiple heat accumulation type radiant tubes 5 are in the horizontal direction or perpendicular
Nogata is respectively equipped with burner to spaced setting, the both ends of heat accumulation type radiant tube 5, and two burners replace ignition,
The side wall of reduction section 12 is provided with the fuel gas inlet 145 and exhanst gas outlet 146 being connected with heat accumulation type radiant tube 5.
For example, in the example of fig. 1, multiple in the vertical directions of heat accumulation type radiant tube 5 are arranged at intervals, burner is set respectively
Put in the top and bottom of heat accumulation type radiant tube 5.Wherein, when heat accumulation type radiant tube 5 works, wherein one end is (for example, in Fig. 1
Upper end) burner combustion caused by flame spray when formed thermograde (for example, from top to bottom in heat accumulation type radiant tube 5
Temperature gradually reduce).Similarly, when the other end (for example, lower end in Fig. 1) flame caused by burner combustion is spraying
Also thermograde (for example, the temperature in heat accumulation type radiant tube 5 gradually reduces from bottom to top) is formed.When the burner at both ends replaces
When being burnt, two thermogrades superposition of formation so that the whole bulk temperature of heat accumulation type radiant tube 5 is evenly distributed, and carries
The high efficiency of heating surface of miberal powder also original system 100.
Specifically, the temperature difference on single heat accumulation type radiant tube 58 can be not higher than 30 DEG C.Thus, it is effectively guaranteed also
Each regional temperature is evenly distributed in former section 12, ensure that the stability of reduction reaction.
Wherein, inside reactor 1, the arrangement mode of more heat accumulation type radiant tubes 5 can be set according to adjustment is actually needed
Meter.Meanwhile can be by adjusting number of the heat accumulation type radiant tube 5 in the horizontal direction and/or on vertical direction, heat accumulation type radiant tube
Spacing (vertical direction and/or horizontal direction) between 5 number of plies, heat accumulation type radiant tube 5 controls the whole of heater
Temperature.It is of course also possible to control the bulk temperature of heater by controlling the temperature of each heat accumulation type radiant tube 5.Behaviour
Make simply, and can flexibly control, temperature range in regulating stove.
Gas distributor 2 is located in feed zone 11, under charging aperture 141.Gas distributor 2 has gas feed
210 and opening up gas vent 220, gas feed 210 connected with gas vent 220, gas distributor 2 be configured to by
The miberal powder to be fallen in feed zone 11 is dispelled so that miberal powder dispersedly falls into reduction section 12.Gas feed 210 can be with dispelling source of the gas
Connection.It can be reducibility gas or inert gas to dispel gas.Wherein, when it is reducibility gas to dispel gas, dispel
The composition for the reducing gas that gas is preferably with reduction reaction occurs for miberal powder is identical.Specifically, the opening direction of gas feed 210
Surface tilts upward.Thus, air-flow can with miberal powder counter current contacting, so as to break up the miberal powder of whereabouts.
For example, after miberal powder enters feed zone 11 by charging aperture 141, fall, falling in the presence of self gravitation
Cheng Zhong, the gas at gas vent 220 can dispel the miberal powder of whereabouts so that miberal powder is dispersedly dropped down onto down in reduction section 12.
Alternatively, gas distributor 2 can uniformly dispel the miberal powder to be fallen in feed zone 11 so that miberal powder is equably scattered to reduction
In section 12.
Thus, it is possible to miberal powder is fully broken up by gas distributor 2, so as to effectively increase miberal powder and also Primordial Qi
The contact area of body, reduction reaction rate and the utilization rate of reducing gas are accelerated, improve the production of miberal powder also original system 100
Efficiency and the energy consumption for reducing miberal powder also original system 100.Further, since the particle diameter of miberal powder is smaller, specific surface area is big, and miberal powder is with going back
Reaction rate between raw-gas is big, while makes heat transfer condition and reacting dynamics condition between gas-solid using direct-fired mode
Substantially improve, reduction reaction can just be completed within the several seconds.It is this directly heat mode compared to first by reducing gas heating lead to again
Enter to reduce the mode of chamber, reduction reaction rate is very fast, and the utilization rate of heat is high and security is preferable.
According to the miberal powder of the utility model embodiment also original system 100, by setting gas distributor 2 in reactor 1,
Miberal powder can fully be broken up by gas distributor 2, so as to effectively increase the contact area of miberal powder and reducing gas,
Reduction reaction rate is accelerated, improves the utilization rate of reducing gas and the utilization rate of system thermal, improves miberal powder reduction system
System 100 production efficiency and reduce the energy consumption of miberal powder also original system 100.Simultaneously by by charging aperture 141, reduction offgas outlet
142nd, also Primordial Qi entrance 143 and discharging opening 144 are disposed on reactor 1 successively from top to bottom, can make full use of miberal powder
Heat also in original system 100, there is provided heat utilization efficiency, reduce energy consumption and operating cost.
In addition, compared with prior art, the miberal powder also original system 100 of the utility model embodiment can handle powder
Material, directly miberal powder is reduced, on the one hand, save the agglomeration flow of tedious process；On the other hand, due to granular material particle diameter
Small, big with reducing gas contact area, heat transfer, mass transfer and reaction rate between the two are accelerated, and the treating capacity of miberal powder significantly increases,
And it is more thorough to carry out reduction reaction, improves reduction equilibrium degree；Another further aspect, in reactor 1, miberal powder only exists
Bottom is dropped down onto under top under Action of Gravity Field, reduction reaction occurs for the gas with reverse flow during whereabouts, with reduction
Fluid bed is compared, also 100 temperature that need to be controlled in reactor 1 of original system of the miberal powder in the utility model embodiment, operation letter
It is single, and " bond defluidization " phenomenon caused by shut-down can be avoided in fluidized reduction method.
According to some embodiments of the utility model, gas distributor 2 includes：Sprue 21 and multiple runners 22, it is main
Runner 21 is provided with gas feed 210, and each runner 22 connects with sprue 21, and each runner 22 is provided with least one
Gas vent 220.For example, referring to 1 and Fig. 2 is combined, in some specific embodiments of the present utility model, sprue 21 is along level
Direction extends, and specifically, sprue 21 can be formed as the strip runner radially extended along reactor 1, gas vent 220
It can be two and be respectively formed at the both ends of the length direction of sprue 21.Multiple runners 22 are in the length side of sprue 21
It is arranged at intervals upwards, each runner 22 is led on the width of sprue 21 through sprue 21 and each runner 22
Runner 21 is bisected into two sections.Thus, it is possible to so that gas vent 220 is evenly distributed, it thereby may be ensured that miberal powder was falling
Uniformly dispelled by the air-flow at gas vent 220 in journey so that miberal powder is uniformly distributed whereabouts on the cross section of reactor 1.
It is understood that in other embodiments of the present utility model, multiple runners 22 can also be radially
Distribution, its concrete arrangement can be according to gas distributor 2 and the specifications and models adjusted design of reactor 1, the utility model
This is not especially limited.
Alternatively, the spacing between two gas vents 220 adjacent on each runner 22 can be with equal, multiple shuntings
The length in road 22 be able to can not also be waited with equal.For example, in the figure 2 example, the runner 22 close to the both ends of sprue 21 is grown
Degree is less than the length of runner 22 close to the center of sprue 21, correspondingly, close to the number of the gas vent 220 at the both ends of sprue 21
Amount is less than the quantity of the gas vent 220 close to the center of sprue 21.That is, the opening position gas close to the center of reactor 1
The arrangement Relatively centralized of body outlet 220.Because miberal powder is in dropping process, the amount close to the material at the center of reactor 1 is larger, this
What sample can improve gas distributor 2 dispels effect.
Specifically, reference picture 2, the quantity of runner 22 is 11, in a direction from left to right, the gas on runner 22
The quantity of body outlet 220 is respectively 4,8,10,10,12,12,12,10,10,8,4.Gas distributor 2 is formed as Central Symmetry knot
Structure.
For example, gas, which first passes through gas feed 210, enters the sprue 21 of gas distributor 2, then entered by sprue 21
Runner 22.Gas is blowed to gas distributor 2 by the gas in runner 22 along Cheng Liudong by gas vent 220
Top, with miberal powder counter current contacting, the miberal powder of whereabouts is dispelled.
According to some further embodiments of the present utility model, escape pipe 221 is provided with least one gas vent 220,
The upper end of escape pipe 221 is provided with anti-blocking portion 2211, and the cross-sectional area in anti-blocking portion 2211 is gradually reduced on direction from bottom to up.
That is, escape pipe 221 can be set on a part of gas vent 220 wherein, can also be at each gas vent 220
Escape pipe 221 is respectively provided with, gas is blowed to the miberal powder of whereabouts by escape pipe 221.Reference picture 4, escape pipe 221 is along the vertical direction
Extension, the top in anti-blocking portion 2211 is provided with opening.Thus, it is possible to increase the flow velocity of gas outflow escape pipe 221, increase air-flow
Impulsive force, the miberal powder for effectively preventing from falling block gas vent 220.
Alternatively, anti-blocking portion 2211 is formed as cone shape, the folder between the bus and its center line in anti-blocking portion 2211
Angle α meets：30°≤α≤60°.For example, angle α can meet：α=30 °, α=45 °, α=60 ° etc..Thus, it is possible to so that blow
Scattered miberal powder smoothly falls, and can further prevent miberal powder from blocking gas vent 220, improves miberal powder also original system 100
Reliability.
According to some embodiments of the utility model, the length of runner 22 is L, the gas vent 220 on runner 22
The gross area be S, L and S ratio meet：8≤L/S≤10.Thus, it is possible to ensure that air-flow can break up the miberal powder of whereabouts, together
When can ensure the structural strength of runner 22, further increasing the reliability of miberal powder also original system 100.
According to some embodiments of the utility model, the spacing d between two neighboring runner 22 meets：80mm≤d≤
120mm.Its concrete numerical value can be according to the specifications and models adjusted design of reactor 1.For example, between two neighboring runner 22
Spacing d can further meet：D=80mm, d=100mm, d=120mm etc..
Included according to some further embodiments of the present utility model, reference picture 1, cooling section 13：Air-cooled section 131 and water cooling
Section 132, air-cooled section 131 of side wall are provided with also Primordial Qi entrance 143, are provided with what is connected with also Primordial Qi entrance 143 in air-cooled section 131
Air distribution plate, water cooling section 132 are located at air-cooled section 131 of lower section, and the side wall of water cooling section 132 is provided with water-cooling wall 1321.Air-cooled section 131
Cooling treatment is carried out to obtained reduzate successively with water cooling section 132.
Reference picture 1, air-cooled section 131 connects with reduction section 12, and water cooling section 132 connects with air-cooled section 131, wherein, air-cooled section
131 cross-sectional area is gradually reduced from top to bottom, and discharging opening 144 is formed in the lower end of water cooling section 132.There is opening on air distribution plate
Upward qi-emitting hole, from the reducing gas that also Primordial Qi entrance 143 enters, evenly into reactor 1 in the presence of air distribution plate
It is internal.Water-cooling wall 1321 can be located on the periphery wall or internal perisporium of water cooling section 132, can also be arranged on water cooling section simultaneously
On 132 periphery wall and internal perisporium.There is the water or steam of flowing in water-cooling wall 1321.
Specifically, water-cooling wall 1321 includes fluid intake 1322 and fluid issuing 1323.Thus, water or water vapour pass through
Fluid intake 1322 enters inside water-cooling wall 1321, then flows out water-cooling wall 1321 from fluid issuing 13232, and then realize water cooling
The function that cools of wall 1321.
For example, hot reduzate is first downwardly into air-cooled section 131 by reduction section 12, the higher reduzate of temperature is by warm
Amount passes to the normal temperature reducing gas that has just enter into reactor 1, realize reducibility gas preheating and reduzate it is preliminary
Cooling, obtains pre-warmed reducing gas and the reduzate tentatively cooled down.Reducibility gas temperature after preheating can reach 300
~600 DEG C, the reduzate temperature tentatively to cool can be down to 600~900 DEG C.Thus, air-cooled section 131 of heat exchange processing, both
The preliminary cooling to hot reduzate is realized, is advantageous to be rapidly heated after the reducing gas after preheating enters reduction section 12 again
And react, the heat of reduzate is taken full advantage of, reduces the energy expenditure of production process, reduces production cost.
Then, the reduzate tentatively cooled down passes through water-cooling wall because self gravitation constantly falls into water cooling section 132
1321 absorb reduzates heat, carry out secondary cooling processing, it is air-cooled after reduzate behind water cooling region temperature drop
To normal temperature, pre-warmed reducing gas constantly freely rises, and enters reduction section 12 and carries out reduction reaction to miberal powder.Thus, drop
The low thermal losses of miberal powder also original system 100, and improve the stability of reduzate.
Further, reactor 1 also includes：Push-pull valve, push-pull valve are located in feed zone 11 and positioned at gas distributor 2
Top, push-pull valve include spaced more sub- push-pull valves in the vertical direction, and during charging, adjacent two sub- push-pull valves are handed over
For opening and closing to carry out material envelope to reactor 1.
Specifically, push-pull valve can include spaced two sub- push-pull valves in the vertical direction, the sub- plate of top
Valve is upper push-pull valve 31, and the sub- push-pull valve of lower section is underthrust plate valve 32.
For example, during charging, can first open push-pull valve 31, miberal powder via being dropped down onto under charging aperture 141 on lower plugboard valve 32,
Then, push-pull valve 31 in closing, underthrust plate valve 32 is opened, makes the powder between two push-pull valves successively through under gas distributor 2
Reduction section 12 is dropped down onto, then, closes underthrust plate valve 32, push-pull valve 31 makes the powder whereabouts being deposited on push-pull valve 31 in openings
To underthrust plate valve 32, charging is so repeated, is used cooperatively by the alternating of upper push-pull valve 31 and underthrust plate valve 32, ensures
Powder reactor 1 in dropping process is in sealing state from beginning to end, ensure that being smoothed out for reduction reaction, Er Qie
Heat losses are avoided to a certain extent, and then improve the operating efficiency of miberal powder also original system 100.
According to some further embodiments of the present utility model, reactor 1 also includes cloth materials and parts 4, and cloth materials and parts 4 are located at plate
Between valve and gas distributor 2, cloth materials and parts 4 are provided with multiple spaced cloth holes.Specifically, cloth materials and parts 4 can be cloth
Flitch, material leakage cone, any one in vibratory sieve, or cloth materials and parts 4 can be any in drapery panel, material leakage cone, vibratory sieve
The combination of two, or cloth materials and parts 4 can be from top to bottom successively spaced drapery panel, material leakage cone, vibratory sieve.Thus,
Powder between two push-pull valves can pass through the tentatively scattered ore deposit to fall of cloth materials and parts 4 first through dropping down onto reduction section 12 under cloth materials and parts 4
Powder, the miberal powder to be fallen from cloth materials and parts 4 is then dispelled by gas distributor 2 again, so as to be effectively improved gas distributor 2
Effect is dispelled, and miberal powder can be avoided to block gas vent 220.
According to some specific embodiments of the present utility model, miberal powder also original system 100 also includes feed system and discharging is
System, feed system includes raw material cabin 61 and bucket carries 62, wherein, bucket carries 62 one end (for example, lower end in Fig. 1) and raw material cabin 61
Connection, the other end (for example, upper end in Fig. 1) connect with charging aperture 141.For example, bucket carries 62 and can tilt upward extension.By
This, can carry 62 by bucket and the miberal powder in raw material cabin 61 is transported in reactor 1.
Discharge system includes spiral discharging machine 63, and spiral discharging machine 63 is located at discharging opening 144.So as to easily will
Reduzate is delivered to the outside of reactor 1.
According to the miberal powder of the utility model embodiment also original system 100, reduction reaction rate is accelerated, improves also Primordial Qi
The utilization rate of body and the utilization rate of system thermal, improve the miberal powder also production efficiency of original system 100 and reduce miberal powder reduction
The energy consumption of system 100.
According to the restoring method of the miberal powder of the utility model embodiment also original system 100, according to miberal powder also original system 100
The miberal powder of the utility model above-described embodiment also original system 100, restoring method comprises the following steps：
Reducing gas is passed through into reduction section 12 by also Primordial Qi entrance 143, control heater work is with to reduction section
Reduction reaction in 12 provides heat；
Miberal powder is added to feed zone 11；
It is passed through into gas distributor 2 and dispels gas, will be fallen from the gas that gas vent 220 flows out in feed zone 11
Miberal powder dispels so that miberal powder is dispersedly fallen into reduction section 12 occurs reduction reaction with reducing gas；
The react reduzate of generation of miberal powder and reducing gas is discharged from discharging opening 144, reacted reducing gas
Discharged from reduction offgas outlet 142.
According to the restoring method of the miberal powder of the utility model embodiment also original system 100, can be incited somebody to action by gas distributor 2
Miberal powder is fully broken up, and so as to effectively increase the contact area of miberal powder and reducing gas, accelerates reduction reaction rate, carries
The high utilization rate of reducing gas and the utilization rate of system thermal, improve the miberal powder also production efficiency of original system 100 and reduction
The energy consumption of miberal powder also original system 100.Meanwhile restoring method is simple to operate, running is easily controllable.
Operating method referring to Fig. 1-Fig. 4 descriptions according to the miberal powder also original system 100 of the utility model embodiment.
1) miberal powder is added in reactor 1 via the feed zone 11 at the top of reactor 1.First, push-pull valve 31 in opening, ore deposit
Powder under charging aperture 141 via dropping down onto on lower plugboard valve 32, then, push-pull valve 31 in closing, opens underthrust plate valve 32, makes two to insert
Powder between plate valve falls via cloth materials and parts 4, is passed through into gas distributor 2 and dispels gas, is flowed out from gas vent 220
Gas dispels the miberal powder to fall in feed zone 11 so that miberal powder is dispersedly fallen into reduction section 12 is reduced with reducing gas
Reaction；Then, close underthrust plate valve 32, lower plugboard is dropped down onto under the powder that push-pull valve 31 makes to be deposited on push-pull valve 31 in opening
On valve 32, charging is so repeated, is used cooperatively by the alternating of upper push-pull valve 31 and underthrust plate valve 32, ensure that powder exists
Reactor 1 is in sealing state from beginning to end in dropping process.
2) miberal powder in reactor 1 portion reduction section 12 carry out reduction treatment.Under the heat effect of heater, reduction
12 internal furnace temperature of section are higher (preferable, the burner hearth of reduction section 12 is heated system and is heated to 900-1200 DEG C), anti-to reduce
That answers carries out offer advantage.Reduction section 12 is fallen under miberal powder, reducing gas is preheated (also Primordial Qi via cooling section 13
Body is preheated to 300-600 DEG C) reduction section 12 is freely risen to afterwards, impact occurs in both by convection, fully connects
Touch, chemically react, obtain reduzate and reduction tail gas；Obtained reduzate is because self gravitation constantly falls, warp
By the bottom discharge of reduction section 12 cooling treatment is carried out to cooling section 13；Obtained reduction tail gas constantly freely rises, via also
The top discharge of former section 12, is then discharged into wash cooling dress via the reduction offgas outlet 142 positioned at the top sidewall of reactor 1
In putting.Wherein, the reaction mechanism of miberal powder and reducibility gas is：MexOy+CO→Me+CO2, MexOy+H2→Me+H2O.Due to ore deposit
Powder footpath is small, and heat transfer condition and reacting dynamics condition substantially improve between gas-solid, and reduction reaction can be completed within the several seconds, realizes
The quick production process of DRI.
3) cooling section 13 of the miberal powder in the bottom of reactor 1 carries out cooling treatment.The reduzate that reduction section 12 obtains is heat
State reduzate, first, into the air-cooled section 131 preliminary cooling processing of progress, i.e., described hot reduzate and just via cloth wind
Plate is exchanged heat even between the normal temperature reducing gas in reactor 1 so that the temperature of hot reduzate is down to 600-
900 DEG C, at the same time, reducing gas is preheated to 300-600 DEG C；Then, enter via the reduzate of preliminary cooling processing
Water cooling section 132 carries out reducing temperature twice processing, i.e., passes through heat exchange during water-cooling wall 1321 via the reduzate of preliminary cooling processing
Processing so that the heat of reduzate in burner hearth can be effectively absorbed by being distributed in the water-cooling wall 1321 of the bottom surrounding of reactor 1,
The reduzate that temperature is down to normal temperature is obtained, realizes the reducing temperature twice of reduzate.Obtained normal temperature reduzate is via reaction
The discharging opening 144 of device 1 is discharged.
Description below reduces system 100 using miberal powder in the utility model embodiment and carries out reduction reaction conditionses to Iron Ore Powder
And specific steps：
Embodiment one：
Material：Iron ore concentrate Iron grade is 65%, and ratio of the Iron Ore Powder grain diameter less than 0.074mm is no less than 80%；
CO volume fractions are that 80%, H2 volume fractions are 15% in reducing gas.
Reaction condition：The quick reduction apparatus reaction zone radiant tube temperature of Iron Ore Powder heat accumulating type is set to 950 DEG C.
The step of restoring method：
Iron ore concentrate is added into reactor 1 from charging aperture 141；
Inert gas is passed through gas distributor 2；
Normal temperature reducing gas is passed through from the quick reduction apparatus bottom of Iron Ore Powder heat accumulating type, with iron ore concentrate reduce instead
Should；
Also Primordial Qi is exchanged heat and sent out with the Iron Ore Powder of whereabouts by the heat temperature raising of heat accumulation type radiant tube 5 in uphill process
Raw reduction reaction, reduction offgas outlet 142 of the reduction tail gas through the quick reduction apparatus top of Iron Ore Powder heat accumulating type discharge reactor
1；
The metallization powder of reaction generation is discharged through discharging opening 144.
Product：Degree of metalization is 95% metallization powder iron.
Embodiment two：
Material：The iron ore concentrate Iron grade is 65%, and ratio of the mineral powder granular particle diameter less than 1mm is no less than 80%；
CO volume fractions are that 60%, H2 volume fractions are 30% in reducing gas；
Reaction condition：The quick reduction apparatus reaction zone radiant tube temperature of Iron Ore Powder heat accumulating type is set to 950 DEG C.
The step of restoring method：
Iron ore concentrate is added into reactor 1 from charging aperture 141；
Inert gas is passed through gas distributor 2；
Normal temperature reducing gas is passed through from the quick reduction apparatus bottom of Iron Ore Powder heat accumulating type, with iron ore concentrate reduce instead
Should；
Also Primordial Qi is exchanged heat and sent out with the Iron Ore Powder of whereabouts by the heat temperature raising of heat accumulation type radiant tube 5 in uphill process
Raw reduction reaction, reduction offgas outlet 142 of the reduction tail gas through the quick reduction apparatus top of Iron Ore Powder heat accumulating type discharge reactor
1；
The metallization powder of reaction generation is discharged through discharging opening 144.
Product：Degree of metalization is 95% metallization powder iron.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the present utility model.In this manual, to above-mentioned art
The schematic representation of language is not necessarily referring to identical embodiment or example.Moreover, description specific features, structure, material or
Person's feature can combine in an appropriate manner in any one or more embodiments or example.
While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that：
These embodiments can be carried out with a variety of changes, modification in the case where not departing from principle and objective of the present utility model, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (10)
- A kind of 1. miberal powder also original system, it is characterised in that including：Reactor, the reactor include feed zone, reduction section and cooling section, and the reduction section is located at the lower section of the feed zone And connected with the feed zone, the cooling section connects below the reduction section and with the reduction section, the feed zone Top be provided with charging aperture, the bottom of the cooling section is provided with discharging opening, and the side wall of the reactor is provided with reduction tail gas and gone out Mouth and also Primordial Qi entrance, the reduction offgas outlet and the also Primordial Qi entrance are disposed on the charging in the vertical direction Between mouth and the discharging opening, and the reduction offgas outlet and the also Primordial Qi entrance connect with the reduction section；Heater, the heater are located in the reduction section, and including multiple heat accumulation type radiant tubes, the heat accumulating type spoke The both ends for penetrating pipe are respectively equipped with burner；Gas distributor, the gas distributor are located in the feed zone, under the charging aperture, the gas distribution Utensil has gas feed and opening up gas vent, and the gas feed connects with the gas vent, the gas point Cloth device is configured to dispel the miberal powder to fall in the feed zone so that the miberal powder dispersedly falls into the reduction section.
- 2. miberal powder according to claim 1 also original system, it is characterised in that the gas distributor includes：Sprue, the sprue are provided with the gas feed；WithMultiple runners, each runner connect with the sprue, and each runner is provided with least one institute State gas vent.
- 3. miberal powder according to claim 2 also original system, it is characterised in that the sprue is horizontally extending, more The individual runner is arranged at intervals on the length direction of the sprue, width of each runner in the sprue Side extends upward through the sprue and each runner is bisected into two sections by the sprue.
- 4. the miberal powder also original system according to any one of claim 1-3, it is characterised in that at least one gas goes out Escape pipe is provided with mouthful, the upper end of the escape pipe is provided with anti-blocking portion, and the cross-sectional area in the anti-blocking portion is in side from bottom to up It is gradually reduced upwards.
- 5. miberal powder according to claim 4 also original system, it is characterised in that the anti-blocking portion is formed as cone shape, Angle α between the bus and its center line in the anti-blocking portion meets：30°≤α≤60°.
- 6. miberal powder according to claim 2 also original system, it is characterised in that the length of the runner is L, the shunting The gross area of the gas vent on road is S, and the ratio of the L and S meet：8≤L/S≤10.
- 7. miberal powder according to claim 2 also original system, it is characterised in that the spacing between the two neighboring runner D meets：80mm≤d≤120mm.
- 8. miberal powder according to claim 1 also original system, it is characterised in that the cooling section includes：Air-cooled section, described air-cooled section of side wall is provided with the also Primordial Qi entrance, is provided with described air-cooled section and the also Primordial Qi The air distribution plate of entrance connection；WithWater cooling section, the water cooling section are located at described air-cooled section of lower section, and the side wall of the water cooling section is provided with water-cooling wall.
- 9. miberal powder according to claim 1 also original system, it is characterised in that also include：Push-pull valve, the push-pull valve are located at In the feed zone and include spaced more in the vertical direction positioned at the top of the gas distributor, the push-pull valve Individual sub- push-pull valve, during charging, adjacent two sub- push-pull valves are alternately opened and closed to carry out material envelope to the reactor.
- 10. miberal powder according to claim 9 also original system, it is characterised in that be also located at including cloth materials and parts, the cloth materials and parts Between the push-pull valve and the gas distributor, the cloth materials and parts are provided with multiple spaced cloth holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720913227.4U CN207031478U (en) | 2017-07-25 | 2017-07-25 | Miberal powder also original system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720913227.4U CN207031478U (en) | 2017-07-25 | 2017-07-25 | Miberal powder also original system |
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| Publication Number | Publication Date |
|---|---|
| CN207031478U true CN207031478U (en) | 2018-02-23 |
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|---|---|---|---|
| CN201720913227.4U Expired - Fee Related CN207031478U (en) | 2017-07-25 | 2017-07-25 | Miberal powder also original system |
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|---|---|
| CN (1) | CN207031478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846206A (en) * | 2020-12-29 | 2021-05-28 | 江苏博迁新材料股份有限公司 | Pulse type metal powder preparation condensation method |
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2017
- 2017-07-25 CN CN201720913227.4U patent/CN207031478U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846206A (en) * | 2020-12-29 | 2021-05-28 | 江苏博迁新材料股份有限公司 | Pulse type metal powder preparation condensation method |
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