CN205669012U - Brown coal hydrogasification Poly-generation produces the device of reducing gases - Google Patents
Brown coal hydrogasification Poly-generation produces the device of reducing gases Download PDFInfo
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- CN205669012U CN205669012U CN201620561793.9U CN201620561793U CN205669012U CN 205669012 U CN205669012 U CN 205669012U CN 201620561793 U CN201620561793 U CN 201620561793U CN 205669012 U CN205669012 U CN 205669012U
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Abstract
This utility model provides brown coal hydrogasification Poly-generation to produce the device of reducing gases, and this device includes gasification furnace, pyrolysis/partial gasification stove, semicoke storage tank, dust removing units and blender；Gasification furnace divides one, two, three districts；One district and two intervals set catalyst inlet；2nd district and three intervals set semicoke/gasification agent inlet；Gasification furnace top bottom sets up syngas outlet and lime-ash outlet separately；Setting guide shell in partial gasification stove, furnace roof bottom sets up nozzle and semicoke outlet separately, sets heating medium inlet near top, sets volatiles outlet at semicoke warehouse；Semicoke outlet is connected with semicoke reservoir inlet and semicoke/gasification agent inlet respectively；Syngas outlet is connected with heating medium inlet, and its also removing dust unit is connected with mixer entrance；Volatiles outlet is connected with mixer entrance；Mixer entrance is connected with top gas decarburization unit, top gas clean unit the most successively.Utilizing this device, it can make brown coal staged conversion, produces reducing gases, and with low cost, the thermal efficiency is high, environmental friendliness.
Description
Technical field
This utility model relates to brown coal hydrogasification Poly-generation and produces the device of reducing gases, belongs to metallurgical technology field.
Background technology
Direct reduction iron making is that to use coal, gas or liquid fuel be the energy and reducing agent, iron ore softening temperature with
Under, non-fusible iron ore will obtain the technique of solid-state DRI at ferrum oxide reduction, this technique does not use coke, need not
Sintering deposit, has high-quality, low consumption, oligosaprobic feature.Wherein, shaft furnace gas base directly reducing ironmaking technology is recent two decades development
The one emerging non-blast furnace ironmaking technology got up, its natural gas resource depending on high-quality and high-grade ore resource, the most several
Year obtains good application development abroad, but is the most preferably developed in China and apply, and this is largely determined by state
Natural gas resource that interior shortage is cheap and high-grade, high-quality lump ore.China's tradition coking-blast furnace ironmaking route have energy consumption high,
Pollute big, it is impossible to effectively utilizing coal resources, therefore developing and combining shaft kiln directly reduced ironmaking technology with coal gas is to meet me
The novel ironmaking technology of state's national conditions, present stage coal gas relatively costly, use low-order coal (brown coal) to be pyrolyzed, gasify and refine for shaft furnace
Ferrum provides reducing gases to be important research topic.
At present, the gas-based shaft kiln technique of production scale maximum is based on Midrex method and HYL method, all with natural gas as raw material
It is converted into reducing gases, and gradually develops coke-stove gas and coal gas ironmaking technology.It is said that in general, shaft kiln directly reduced ironmaking is right
The requirement of reducing gases is, H2With CO and CH4Total volume fraction more than 90%,Being 1.0～5.0, reducing gases enters
Furnace temperature is more than 850 DEG C.
Existing coal gasifying process all can not directly provide the gas component meeting requirement, needs conversion equipment to regulate gas
Body component, and it is high generally to there is gasification furnace pressure, processed gas cost height, energy consumption high deficiency harsh to ingredient requirement.Therefore, open
The Novel gasification technique sending out direct reduction iron making technological requirement applicable is very important.If can be with China's relative abundance, one-tenth
These cheap brown coal as raw material production reducing gases, then can be greatly reduced DRI cost.Therefore, exploitation is suitable for directly also
Novel reducing gases device and preparation technology that former iron-smelting process requires are very important.
Utility model content
For solving above-mentioned technical problem, main purpose of the present utility model is to provide brown coal hydrogasification Poly-generation to produce reduction
The device of gas.Utilize this device can effectively gasify brown coal produce reducing gas for shaft furnace, for DRI coproduction chemical products.
For reaching above-mentioned purpose, this utility model provides brown coal hydrogasification Poly-generation to produce the device of reducing gases, and it includes gasification
Stove, pyrolysis/partial gasification stove, semicoke storage tank, dust removing units and blender；
Described gasification furnace is divided into the first reaction zone, second reaction zone and the 3rd reaction zone from top to bottom；
It is provided with catalyst inlet between described first reaction zone and second reaction zone；
It is provided with semicoke/gasification agent inlet between described second reaction zone and the 3rd reaction zone；
The top of described gasification furnace and bottom are respectively equipped with syngas outlet and lime-ash outlet；
Being provided with guide shell in the stove of described pyrolysis/partial gasification stove, described pyrolysis/partial gasification stove is divided into by this guide shell
Pyrolysis/partial gasification district and semicoke warehouse；The body of heater top of described pyrolysis/partial gasification stove and bottom are respectively equipped with nozzle and half
Burnt outlet, the body of heater of described pyrolysis/partial gasification stove is provided with heating medium inlet, described pyrolysis/partial gasification stove near top end
Body of heater at described semicoke warehouse, be provided with volatiles outlet；
Described semicoke outlet by pipeline respectively with the entrance of described semicoke storage tank and described semicoke/gasification agent inlet phase
Even；
Described syngas outlet is passed through the pipeline entrance respectively with described heating medium inlet and described dust removing units and is connected；Institute
The outlet stating dust removing units is connected with an entrance of described blender by pipeline；
Described volatiles outlet is connected with refined unit, separative element and decarburization unit by pipeline, and this decarburization unit leads to
Cross pipeline to be connected with another entrance of described blender；Preferably, described refined unit, separative element and the series connection of decarburization unit,
Preferably it is sequentially connected in series；
Another entrance of described blender is connected with the outlet of top gas decarburization unit by pipeline, this top gas decarburization list
The entrance of unit is connected with the outlet of top gas clean unit by pipeline, the entrance of this top gas clean unit be used for carrying perpendicular
The pipeline of the top gas produced after stove reducing iron ore is connected；
The outlet of described blender is connected with the pipeline being used for carrying reducing gases.
According to detailed description of the invention of the present utility model, this device also includes waste heat boiler, and this waste heat boiler is set up in institute
Stating between dust removing units and described syngas outlet, the entrance of described waste heat boiler passes through pipeline and described syngas outlet phase
Even, the outlet of described waste heat boiler is connected by the entrance of pipeline with described dust removing units.Waste heat boiler is increased before this cleaner unit
Stove, the sensible heat of recyclable synthesis gas.
According to detailed description of the invention of the present utility model, in device described in the utility model, described pyrolysis/partial gasification
Furnace body is refractory brick, and outer wall is stainless steel material.
According to detailed description of the invention of the present utility model, in device described in the utility model, described for carrying reduction
On the pipeline of gas, gas-heating apparatus is set.This heater can add thermal reduction gas, to meet the temperature requirement into shaft furnace gas.
According to detailed description of the invention of the present utility model, in device described in the utility model, described catalyst inlet leads to
Cross pipeline to be connected with the outlet of described semicoke storage tank.The outlet of catalyst inlet with semicoke storage tank is connected this practicality can be facilitated new
Type directly using gained semicoke as catalyst, or on gained semicoke after load active component as catalyst.
According to detailed description of the invention of the present utility model, in device described in the utility model, this guide shell is round
Cylinder, cylinder lower diameter expands.Arrange the volatile matter that guide shell is conducive to brown coal partial gasification to produce to separate with semicoke, reduce
Volatile matter and the suppression to semi-coke activity that interacts of semicoke, specifically, volatile matter and semicoke are in guide shell outlet punishment
From, semicoke falls into semicoke warehouse, and volatile matter enters subsequent cell by pipeline.
According to detailed description of the invention of the present utility model, in device described in the utility model, described refined unit, separation
Unit and decarburization unit are sequentially connected in series.
On the other hand, this utility model additionally provides the method that brown coal hydrogasification Poly-generation produces reducing gases, and it is by making
With said apparatus realization, the method comprises the following steps:
By brown coal, pyrolysis/partial gasification gasifying agent by described nozzle and heat carrier is defeated by described heating medium inlet
Enter described pyrolysis/partial gasification stove, incomplete gasification reaction within it occurs, obtain volatile matter and semicoke；Described volatilization lease making
Refining, separate and obtain pyrolysis gas after decarburization, this pyrolysis gas enters described blender；A described semicoke part by described semicoke/
Catalyst mouth enters gasification furnace, and remainder enters described semicoke storage tank；
Gas completely is there is in the semicoke being entered described gasification furnace by described semicoke/catalyst inlet with the gasifying agent that is gasified totally
Change reaction, obtain raw gas；
Described raw gas and the catalyst entered by described catalyst inlet are anti-in described gasification furnace generation catalytic conversion
Should, obtain synthesis gas；
Described synthesis gas is a part of enters described pyrolysis/partial gasification stove as described heat carrier from described heating medium inlet
In, a part enters described blender by described dust removing units；Preferably, described dedusting is dry method dust；
The top gas coming from shaft furnace is purified, enter described blender after carbon dioxide removal；Preferably, come from perpendicular
The temperature of the top gas of stove is 300～500 DEG C；
Enter the pyrolysis gas of described blender, synthesis gas mix with the top gas after purified, carbon dioxide removal after
Described reducing gases.Preferably, the temperature controlling reducing gases is 800～1100 DEG C, and this reducing gases is sent into described shaft furnace and ferrum
Ore reaction generates sponge iron.
The reactions such as this utility model occurs being gasified totally of semicoke in described gasification furnace, gas conversion, generate high-quality
Synthesis gas.Specifically, semicoke and the agent that is gasified totally are gasified totally in second reaction zone reaction, generate raw gas, preferably
Regulating the proportioning of oxygen/water steam in the gasifying agent that is gasified totally makes gasification temperature at 1100～1600 DEG C；Be gasified totally gained ash
Slag enters the 3rd reaction zone, is discharged by lime-ash outlet；Raw gas is reformed with entering catalyst in the first reaction zone, is catalyzed
Conversion reaction, the ratio of regulation hydrogen/carbon monoxide obtains synthesis gas, and raw gas reacts with adding materials, and consumes big calorimetric
Amount, reduces gas heat, it is possible to decrease syngas outlet temperature to 600～1200 DEG C.
This utility model brown coal complete pyrolysis, partial gasification reaction, semicoke and volatilization in described pyrolysis/partial gasification stove
The separation of thing.The heat carrier entering described pyrolysis/partial gasification stove is to come from the synthesis gas in gasification furnace, and this improves the energy
Utilization rate and gasification efficiency, this synthesis gas is high-temperature heat carrier, provides heat for pyrolysis/partial gasification stove, by the heat entered
The reaction temperature of the heat controllable portion gasification that carrier brings is 500～900 DEG C.Gained semicoke can be used directly as catalyst
Convert in gas catalysis, it is also possible to as catalyst after semicoke load active component.
Method described in the utility model, using China's relative abundance, brown coal with low cost as raw material, uses pyrolysis/part
Gasification furnace extracts high value added product, is gasified totally gained semicoke and obtains synthesis gas, and supplemental heat is vented one's spleen and the produced stove of shaft furnace
Top gas is mixed to get reducing gases, for direct reduction iron making, DRI cost can be greatly reduced, and is the skill of great competitiveness
Art route.
Shaft furnace described in the utility model utilizes gained reducing gases to react with iron ore lump ore or pellet and generates sponge
Ferrum, it is preferable that the inlet temperature of reducing gases is 800～1100 DEG C, iron ore lump ore or pellet enter from shaft furnace top, and also
Primordial Qi reacts generation sponge iron, and temperature is that the top gas of 300～500 DEG C enters described clean unit.
According to specific implementation method of the present utility model, in method described in the utility model, the particle diameter of described brown coal is
Below 0.1mm.
According to method described in the utility model, in method described in the utility model, it is preferable that with incomplete gasified reverse
The semicoke gross weight that should obtain is 100% meter, is entered the weight of the semicoke of described gasification furnace by described semicoke/catalyst inlet
For semicoke gross weight 60～90%.
According to method described in the utility model, in method described in the utility model, the 10% of described synthesis gas volume
～50% enter described pyrolysis/partial gasification stove as described heat carrier from described heating medium inlet, remainder is by described
Dust removing units enters described blender.
Pyrolysis described in the utility model/partial gasification gasifying agent can be selected for oxygen and/or steam, or noble gas
(nitrogen and/or carbon dioxide).This gasifying agent is gasifying agent commonly used in the art, and those skilled in the art can also be according to scene
Operation needs, and can add suitable inert composition in aforementioned pyrolysis/partial gasification gasifying agent, adds or without nitrogen
And/or carbon dioxide, it is achieved not exclusively gasification reaction.
According to detailed description of the invention of the present utility model, in method described in the utility model, described heat carrier is with described
The mass ratio of brown coal is 1～6:1.In this utility model, heat carrier provides heat for reaction, and oxygen, steam destroy in reaction
Macromole, accelerates response speed；Noble gas can be used for pulverized coal conveying.
The gasifying agent that is gasified totally described in the utility model includes oxygen and/or steam.This gasifying agent is that this area is normal
Gasifying agent, those skilled in the art can also add suitably other gas according to field operation needs in gasifying agent
Component is (such as air, CO2、H2Deng), such as add CO2Gas.Preferably, this utility model is by regulation oxygen/water steam proportioning
Control be gasified totally reaction temperature be 1100～1600 DEG C.
According to detailed description of the invention of the present utility model, in method described in the utility model, described in be gasified totally gasification
Agent comprises oxygen, and selectivity also can comprise steam, and wherein this oxygen with the ratio of the semicoke entered from semicoke/gasification agent inlet is
0.3～0.7Nm3: 1kg, this steam is 0～0.5kg:1kg with the mass ratio of semicoke；Preferably, the gasification that is gasified totally is regulated
In agent, the proportioning of oxygen/water steam makes gasification temperature at 1100～1600 DEG C.
According to detailed description of the invention of the present utility model, in method described in the utility model, described catalyst includes
Semicoke or be loaded with the semicoke of active component.Additionally, add metal-oxide also by described catalyst inlet, such as, aoxidize
Calcium, or gasifying agent (such as H2O/O2).The calcium oxide added can play desulfurization, decarbonization, and last molten ash enters the 3rd
Reaction zone, is discharged by slag-drip opening.As it has been described above, described catalyst inlet can be stored up with described semicoke by this utility model by pipeline
The outlet of tank is connected, can directly using pyrolysis/partial gasification stove gained semicoke as catalyst, or at this semicoke load active component
After be re-used as catalyst.
According to detailed description of the invention of the present utility model, in method described in the utility model, described active component includes
The combination of one or more in Fe, Ca, Ni, Na and K.The system of this utility model char catalyst to being loaded with active component
Preparation Method is not required, those skilled in the art can according to field operation needs, select suitable carrying method by above-mentioned Fe,
The combination load of one or more in Ca, Ni, Na and K isoreactivity component, on semicoke, prepares this utility model and is made
The char catalyst being loaded with active component.
According to detailed description of the invention of the present utility model, method described in the utility model comprises the steps:
By brown coal, pyrolysis/partial gasification gasifying agent by described nozzle and heat carrier is defeated by described heating medium inlet
Enter described pyrolysis/partial gasification stove, incomplete gasification reaction within it occurs, obtain volatile matter and semicoke；Described volatile matter depends on
The secondary pyrolysis gas that obtains after refined, separation and decarburization, this pyrolysis gas described blender of entrance；A described semicoke part is by described half
Jiao Fanliaokou enters described gasification furnace, and another part enters described semicoke storage tank；
The semicoke being entered described gasification furnace by described semicoke returning charge mouth is gasified totally instead with the gasifying agent that is gasified totally
Should, obtain raw gas；
Described raw gas is reacted in gasification furnace generation catalytic conversion with the catalyst entered by described catalyst inlet,
To synthesis gas；
Described synthesis gas is a part of enters described pyrolysis/partial gasification stove as described heat carrier from described heating medium inlet
In, a part enters described blender by described dust removing units；Preferably, described dedusting is dry method dust；
The top gas coming from shaft furnace is purified, enter described blender after carbon dioxide removal；Preferably, come from perpendicular
The temperature of the top gas of stove is 300～500 DEG C；
Enter the pyrolysis gas of described blender, synthesis gas mix with the top gas after purified, carbon dioxide removal after
Described reducing gases.Preferably, the temperature controlling reducing gases is 800～1100 DEG C, and this reducing gases is sent into described shaft furnace and ferrum
Ore reaction generates sponge iron.
According to specific implementation method of the present utility model, method described in the utility model comprises the steps:
Carry out brown coal raw coal crushing, grind, sieve, obtain the coal dust that particle diameter is below 0.1mm, this coal dust and pyrolysis/
Partial gasification gasifying agent (such as H2O、O2) enter pyrolysis/partial gasification stove in the lump by nozzle, enter with by heating medium inlet
Heat carrier (temperature is 600～1200 DEG C of synthesis gas) mixing after, in described pyrolysis/partial gasification stove, there is not exclusively gasification
Reaction, obtains volatile matter and semicoke；Described volatile matter obtains pyrolysis gas successively after refined, separation and decarburization, and this pyrolysis gas enters
Described blender, a described semicoke part (accounting for 60%～the 90% of semicoke gross weight) enters gasification by described semicoke returning charge mouth
Stove, remainder enters described semicoke storage tank；
Semicoke and the gasifying agent that is gasified totally (the such as H of described gasification furnace is entered by described semicoke returning charge mouth2O、O2) mixing
After, be gasified totally reaction, obtains raw gas；
Described raw gas is urged at gasification furnace with the catalyst (predominantly semicoke) entered by described catalyst inlet
Agent conversion reaction, obtains synthesis gas；
A described synthesis gas part (the 10%% of volume～50%) enters from described heating medium inlet as described heat carrier
Entering described pyrolysis/partial gasification stove, remainder enters described blender by described dust removing units；
The top gas (temperature is 300～500 DEG C) coming from shaft furnace sequentially passes through described top gas decarburization unit and furnace roof
Gas clean unit is purified, enter blender after carbon dioxide removal；
Enter after the top gas mixing after the pyrolysis gas of described blender, synthesis gas and purified, carbon dioxide removal
Reducing gases.
" pyrolysis/partial gasification " described in the utility model refers to pyrolysis or partial gasification.When reacting gas is noble gas
Time be referred to as pyrolysis oven；Reacting gas is O2、H2Partial gasification stove it is referred to as during the gasifying agents such as O.
" semicoke/gasification agent inlet " described in the utility model refers to that this entrance not only as semicoke entrance but also had entered as gasifying agent
Mouthful.
" refining " described in the utility model be gained volatile matter in pyrolysis/partial gasification stove condensed, purify, gas-liquid
The operations such as separation, to obtain tar and other chemical products.Described " refined unit " comprises the equipment realizing above-mentioned refined purpose
Or device, can be selected for this area and realize conventional equipment or the device of above-mentioned purpose.
" separation " described in the utility model refers to isolated methane (CH from volatile matter4), further, can be by this first
Alkane makes LNG.Described " separative element " is equipment or the device realizing above-mentioned separation purpose, can be selected for this area and realizes above-mentioned mesh
Conventional equipment or device.
" decarburization " described in the utility model refers to remove CO from volatile matter2, to obtain with H2It is main pyrolysis gas with CO.
Described " decarburization unit " or " top gas decarburization unit " is equipment or the device realizing above-mentioned decarburization purpose, can be selected for this area real
The conventional equipment of existing above-mentioned purpose or device.
According to detailed description of the invention of the present utility model, in method described in the utility model, described volatile matter warp successively
Refine, separate and after decarburization, obtain pyrolysis gas.Volatile matter extracts the chemical products such as tar through refined, enters separative element, obtains
Methane, liquefaction can obtain LNG further, and then carbon dioxide removal enters blender.
This utility model is by the brown coal grading extraction tar of low order, CH4Deng high value added product, char Gasification produces synthesis
Gas, high-temperature synthesis gas provides heat as heat carrier for pyrolysis/partial gasification stove, takes full advantage of coal resources, and energy consumption is low, and
Supplementing top gas, pyrolysis gas, resource distribution is reasonable.There is the advantages such as thermal efficiency height, low cost, product gas component is adjustable.For
Direct reduction iron making provides new gas circuit line processed.The technique of alternative traditional coking of coal blast furnace ironmaking, available height
Value-added product, is eco-friendly technology path.
Brown coal hydrogasification Poly-generation described in the utility model produces the method and apparatus of reducing gases in addition to can be used for brown coal, also may be used
It is applied to biomass contour activated carbon raw material.
In summary, the method and apparatus that brown coal hydrogasification Poly-generation described in the utility model produces reducing gases has and has as follows
Benefit effect:
(1) brown coal hydrogasification Poly-generation of the present utility model produces the method and apparatus of reducing gases, the gradable conversion of coal, stove
Top gas, synthesis gas, pyrolysis gas three class gas flexible, with low cost, the thermal efficiency is high, environmental friendliness.
(2) brown coal hydrogasification Poly-generation of the present utility model produces the method and apparatus of reducing gases, the semicoke of generation and volatilization
Thing guide shell lower end in pyrolysis/partial gasification stove separates, and advantageously reduces the adverse effect that semicoke interacts with volatile matter.
Be gasified totally generate high temperature rough gas through catalyzed conversion, reduce gas heat；Heat carrier provides for pyrolysis/partial gasification stove
Heat, improves energy utilization rate and gasification efficiency.
(3) brown coal hydrogasification Poly-generation of the present utility model produces the method and apparatus of reducing gases, the tar quilt in volatile matter
Refined extraction, methane, by separation and Extraction, improves value of the product and resource utilization.
(4) brown coal hydrogasification Poly-generation of the present utility model produces the method and apparatus of reducing gases, and be pyrolyzed or gasify gained half
Coke is gas catalysis reforming catalyst, derives from brown coal, and with low cost, resource is fully used.
(5) brown coal hydrogasification Poly-generation of the present utility model produces the method and apparatus of reducing gases, take full advantage of gasification furnace,
Pyrolysis/partial gasification stove, the feature of shaft furnace, configuration is rationally.
Accompanying drawing explanation
In Fig. 1 and Fig. 2 respectively embodiment 1～3, brown coal hydrogasification Poly-generation prepares the device schematic diagram of reducing gases；
Wherein the label in Fig. 1 and Fig. 2 has a following meaning: 1: gasification furnace；2: syngas outlet；3: catalyst inlet；
4: semicoke/gasification agent inlet；5: lime-ash exports；6: heating medium inlet；7: pyrolysis/partial gasification stove；8: volatiles outlet；9: lead
Flow cartridge；10: semicoke warehouse；11: semicoke exports；12: semicoke storage tank；13: nozzle；14: refined unit；15: separative element；16:
Decarburization unit；17: dust removing units；18: blender；19: top gas decarburization unit；20: top gas clean unit；21: shaft furnace；
22: heater；23: waste-heat recovery device.
Detailed description of the invention
Hereinafter will explain implementation process of the present utility model and product by specific embodiment and Figure of description
Raw beneficial effect, it is intended to help reader to be more fully understood that essence of the present utility model and feature, but not as to this case
Can the restriction of practical range.
Embodiment 1
Present embodiments providing brown coal hydrogasification Poly-generation and produce the device of reducing gases, its schematic diagram is as it is shown in figure 1, this device
Including gasification furnace 1, pyrolysis/partial gasification stove 7, semicoke storage tank 12, dust removing units 17 and blender 18；Wherein:
Described gasification furnace 1 is divided into the first reaction zone A, second reaction zone B and the 3rd reaction zone C from top to bottom；
It is provided with catalyst inlet 3 between described first reaction zone and second reaction zone；
It is provided with semicoke/gasification agent inlet 4 between described second reaction zone and the 3rd reaction zone；
The top of described gasification furnace and bottom are respectively equipped with syngas outlet 2 and lime-ash outlet 5；
Being provided with guide shell 9 in the stove of described pyrolysis/partial gasification stove 7, this guide shell 9 is by described pyrolysis/partial gasification stove 7
It is divided into pyrolysis/partial gasification district and semicoke warehouse 10；Body of heater top and the bottom of described pyrolysis/partial gasification stove 7 are respectively equipped with
Nozzle 13 and semicoke outlet 11, the body of heater of described pyrolysis/partial gasification stove 7 is provided with heating medium inlet 6, described heat near top end
The body of heater of solution/partial gasification stove 7 is provided with volatiles outlet 8 at described semicoke warehouse 10；
Described semicoke outlet 11 by pipeline respectively with the entrance of described semicoke storage tank 12 and described semicoke/gasification agent inlet
4 are connected；
Described syngas outlet 2 by pipeline respectively with described heating medium inlet 6 and the entrance phase of described dust removing units 17
Even；The outlet of described dust removing units 17 is connected by an entrance of pipeline with described blender 18；
Described syngas outlet 2 is also connected with described nozzle 13；Use this that available synthesis gas is set to carry brown coal powder；
Described volatiles outlet 8 is connected with refined unit 14, separative element 15 and decarburization unit 16 successively by pipeline, should
Decarburization unit 16 is connected with another entrance of described blender 18 by pipeline；
Another entrance of described blender 18 is connected with the outlet of top gas decarburization unit 19 by pipeline, this furnace roof QI prostration
The entrance of carbon unit 19 is connected with the outlet of top gas clean unit 20 by pipeline, the entrance of this top gas clean unit 20 and
The pipeline of the top gas produced after carrying shaft furnace 21 reducing iron ore is connected；
The outlet of described blender 18 is connected with the pipeline being used for carrying reducing gases；
Described catalyst inlet 3 is connected with the outlet of described semicoke storage tank 12 by pipeline.
Embodiment 2
The present embodiment utilizes the device shown in Fig. 1 to implement the method that brown coal hydrogasification Poly-generation produces reducing gases, and brown coal pass through
After Po Sui, ground screening obtains the coal dust of below 0.1mm, with gasifying agent (H2O、O2), and noble gas (N2And CO2) or close
(wherein oxygen and brown coal mass ratio 0.2:1, steam and brown coal mass ratio are 0.6:1, noble gas and the quality of brown coal to become gas
Ratio is 0.2:1), enter pyrolysis/partial gasification stove 7, then the high-temperature synthesis gas entered with heating medium inlet 6 in the lump by nozzle 13
Mixing, is pyrolyzed/partial gasification reaction, and reaction temperature is 850 DEG C, generates CO, H2、CH4Deng gas, tar and solid semicoke；
Volatile matter and semicoke enter lower portion of furnace body along guide shell and separate, and volatile matter is discharged into refined unit from volatiles outlet 8
14；Semicoke falls in semicoke warehouse 10, and the semicoke accounting for semicoke gross weight 20% enters in semicoke storage tank 12 by semicoke outlet 11,
As after catalyst or load active component as catalyst, send into gasification furnace.Remainder semicoke passes through pipeline from semicoke/gas
Agent entrance 4 enters gasification furnace, and (ratio of oxygen and semicoke is 0.5Nm with the gasifying agent entered3: 1kg, steam and semicoke
Mass ratio is 0.3kg:1kg) it is gasified totally reaction at second reaction zone B, gasification temperature 1100～1600 DEG C；The coal produced
The char catalyst that gas enters with catalyst inlet 3 mixes, and converts in the first reaction zone A gas component, the catalysis of addition
Agent can be semicoke or semicoke load active component, also can add metal-oxide, such as metal-oxide CaO；The CaO added has
Helping decarburization, desulfurization, metal-oxide can be with lime-ash from lime-ash outlet 5 discharge；At the synthesis gas of the first reaction zone A reaction, inhale
Receive the sensible heat of coal gas of high temperature, and improve H2Content, synthesis gas temperature is at 1000 DEG C；The 45% of synthesis gas volume is as warm
Carrier enters pyrolysis/partial gasification stove 7 and provides heat from heating medium inlet 6, and remainder enters dust removing units 17, subsequently into
Blender 18.Produced by pyrolysis/partial gasification stove 7, volatile matter is obtained by modes such as cooling, gas-liquid separations at refined unit 14
To tar and other chemical products, after separated unit 15 separates out methane, enter decarburization unit 16, remove CO2After be pyrolyzed
Gas, this pyrolysis gas enters blender 18；Enter reducing gases and the iron ore generation reduction reaction of shaft furnace 21, obtain sponge iron and stove
Top gas, top gas outlet temperature is 380 DEG C, and top gas sequentially passes through top gas decarburization unit 19 and top gas clean unit 20 warp
Blender 18 is entered after purification, carbon dioxide removal.The entrance top gas of blender 18, pyrolysis gas, synthesis gas three class gas mix
As reducing gases (CO 33.59%, H after conjunction253.74%, CO22.35%, CH43.29%, N20.94%, H2O 6.10%)
Being delivered to shaft furnace, it is 905 DEG C that reducing gases enters the temperature of shaft furnace.
Embodiment 3
The present embodiment provides the device shown in Fig. 2, and this device is on the basis of Fig. 1, sets up before dust removing units 17
Waste-heat recovery device 23, and it is being additionally arranged heater 22 on the pipeline of reducing gases for carrying.
The present embodiment utilizes device shown in Fig. 2 to implement the method that brown coal hydrogasification Poly-generation produces reducing gases, its method with
Embodiment 1 is identical, be only at synthesis gas before carrying out dust removing units 17, be introduced into waste-heat recovery device, gas recovery sensible heat,
Then removing dust unit 17 enters blender 18；After entering the pyrolysis gas of blender 18, top gas, synthesis gas mixing, output
When the temperature of reducing gases is relatively low, before shaft furnace, increase gas heater, to improve the temperature of reducing gases to 900 DEG C.
The device and method that brown coal hydrogasification Poly-generation provided by the utility model is produced reducing gases above has been carried out in detail
Thin introducing, key step of the present utility model and embodiment are set forth by specific case used herein, above-mentioned reality
Execute example to be only to aid in understanding method of the present utility model and central principle.For those skilled in the art, new according to this practicality
The central principle of type, can change each condition and parameter in being embodied as desired, and in sum, this specification should not
It is interpreted as restriction of the present utility model.
Claims (5)
1. brown coal hydrogasification Poly-generation produces the device of reducing gases, it is characterised in that: it include gasification furnace, pyrolysis/partial gasification stove,
Semicoke storage tank, dust removing units and blender；
Described gasification furnace is divided into the first reaction zone, second reaction zone and the 3rd reaction zone from top to bottom；
It is provided with catalyst inlet between described first reaction zone and second reaction zone；
It is provided with semicoke/gasification agent inlet between described second reaction zone and the 3rd reaction zone；
The top of described gasification furnace and bottom are respectively equipped with syngas outlet and lime-ash outlet；
Being provided with guide shell in the stove of described pyrolysis/partial gasification stove, described pyrolysis/partial gasification stove is divided into heat by this guide shell
Solution/partial gasification district and semicoke warehouse；Body of heater top and the bottom of described pyrolysis/partial gasification stove are respectively equipped with nozzle and semicoke
Outlet, the body of heater of described pyrolysis/partial gasification stove is provided with heating medium inlet near top end, described pyrolysis/partial gasification stove
Body of heater is provided with volatiles outlet at described semicoke warehouse；
The outlet of described semicoke is connected with the entrance of described semicoke storage tank and described semicoke/gasification agent inlet respectively by pipeline；
Described syngas outlet is passed through the pipeline entrance respectively with described heating medium inlet and described dust removing units and is connected；Described remove
The outlet of dirt unit is connected with an entrance of described blender by pipeline；
Described volatiles outlet is connected with refined unit, separative element and decarburization unit by pipeline, and this decarburization unit is by pipe
Road is connected with another entrance of described blender；
Another entrance of described blender is connected with the outlet of top gas decarburization unit by pipeline, this top gas decarburization unit
Entrance is connected with the outlet of top gas clean unit by pipeline, the entrance of this top gas clean unit be used for carrying shaft furnace also
The pipeline of the top gas produced after former iron ore is connected；
The outlet of described blender is connected with the pipeline being used for carrying reducing gases.
Brown coal hydrogasification Poly-generation the most according to claim 1 produces the device of reducing gases, it is characterised in that: this device also wraps
Including waste heat boiler, this waste heat boiler is set up between described dust removing units and described syngas outlet, entering of described waste heat boiler
Mouth is connected with described syngas outlet by pipeline, the outlet of the described waste heat boiler entrance by pipeline Yu described dust removing units
It is connected.
Brown coal hydrogasification Poly-generation the most according to claim 1 produces the device of reducing gases, it is characterised in that: described for defeated
Return and gas-heating apparatus is set on the pipeline of Primordial Qi.
4. produce the device of reducing gases according to the brown coal hydrogasification Poly-generation according to any one of claims 1 to 3, its feature exists
In: described catalyst inlet is connected with the outlet of described semicoke storage tank by pipeline.
Brown coal hydrogasification Poly-generation the most according to claim 1 produces the device of reducing gases, it is characterised in that: described refined list
Unit, separative element and decarburization unit are sequentially connected in series.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105885953A (en) * | 2016-06-12 | 2016-08-24 | 北京京诚泽宇能源环保工程技术有限公司 | Device and method for preparing reducing gas through lignite gasification poly-generation |
| CN108085066A (en) * | 2018-01-30 | 2018-05-29 | 北京阳华科技有限公司 | A kind of Central oxygen-supply water cooling wall-shaped fixed-bed gasification furnace |
| CN110218831A (en) * | 2019-06-27 | 2019-09-10 | 山东大学 | A kind of be fully warmed-up cooperates with molten iron reduction apparatus and method with the coal gasification of gas phase prereduction |
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2016
- 2016-06-12 CN CN201620561793.9U patent/CN205669012U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105885953A (en) * | 2016-06-12 | 2016-08-24 | 北京京诚泽宇能源环保工程技术有限公司 | Device and method for preparing reducing gas through lignite gasification poly-generation |
| CN105885953B (en) * | 2016-06-12 | 2019-01-25 | 北京京诚泽宇能源环保工程技术有限公司 | Brown coal hydrogasification Poly-generation produces the device and method of also Primordial Qi |
| CN108085066A (en) * | 2018-01-30 | 2018-05-29 | 北京阳华科技有限公司 | A kind of Central oxygen-supply water cooling wall-shaped fixed-bed gasification furnace |
| CN110218831A (en) * | 2019-06-27 | 2019-09-10 | 山东大学 | A kind of be fully warmed-up cooperates with molten iron reduction apparatus and method with the coal gasification of gas phase prereduction |
| WO2020258806A1 (en) * | 2019-06-27 | 2020-12-30 | 山东大学 | Joint coal gasification and molten iron reduction device and method having sufficient preheating and gas phase prereduction |
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