CN107674934A - A kind of air supply system and technique of novel direct-reduction iron reformer - Google Patents
A kind of air supply system and technique of novel direct-reduction iron reformer Download PDFInfo
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- CN107674934A CN107674934A CN201711261304.3A CN201711261304A CN107674934A CN 107674934 A CN107674934 A CN 107674934A CN 201711261304 A CN201711261304 A CN 201711261304A CN 107674934 A CN107674934 A CN 107674934A
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- catalyst
- heat exchange
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 147
- 239000003054 catalyst Substances 0.000 claims abstract description 50
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000002485 combustion reaction Methods 0.000 claims abstract description 32
- 230000008929 regeneration Effects 0.000 claims abstract description 30
- 238000011069 regeneration method Methods 0.000 claims abstract description 30
- 239000002737 fuel gas Substances 0.000 claims abstract description 29
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011449 brick Substances 0.000 claims abstract description 16
- 239000003546 flue gas Substances 0.000 claims abstract description 16
- 238000007598 dipping method Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 230000001172 regenerating effect Effects 0.000 claims abstract description 9
- 238000001833 catalytic reforming Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 238000010926 purge Methods 0.000 claims description 22
- 231100000572 poisoning Toxicity 0.000 claims description 21
- 230000000607 poisoning effect Effects 0.000 claims description 21
- 239000002994 raw material Substances 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000006477 desulfuration reaction Methods 0.000 claims description 5
- 230000023556 desulfurization Effects 0.000 claims description 5
- 230000003197 catalytic effect Effects 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000002407 reforming Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 abstract description 3
- 239000011593 sulfur Substances 0.000 abstract description 3
- 208000005374 Poisoning Diseases 0.000 description 15
- 206010037544 Purging Diseases 0.000 description 11
- 230000008569 process Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0073—Selection or treatment of the reducing gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
Abstract
The invention discloses a kind of air supply system and technique of novel direct-reduction iron reformer, the technique be by shaft furnace discharge top gas it is scrubbed after be divided into gas 1 and gas 2；Gas 1 and unstripped gas, which merge to be passed through in vertical reformer feed gas passage, carries out catalytic reforming reaction, and caused reformation gas is delivered to shaft furnace production DRI as also Primordial Qi, and closed cycle uses；Gas 2 and combustion air are delivered to the flue gas that convection section goes out with vertical reformation fire grate and carry out heat exchange, the flue gas to cool by heat exchange is discharged by chimney, it is delivered to vertical reformer as fuel gas through heat exchange elevated temperature gas 2 and makees fuel gas and use, is also delivered to vertical reformer through heat exchange heating combustion air and makees combustion-supporting gas and use.The present invention is filled with the catalyst formed by porous checker brick dipping nickel in vertical reformer, using standby vertical reformer as shared regenerating furnace, the light regeneration of catalyst is realized without sulfur removal technology can, reduces energy resource consumption and cost of investment.
Description
Technical field
The invention belongs to metallurgical technology field, is related to a kind of technology of DRI, more particularly to a kind of Novel direct
Connect the air supply system and technique of reduced iron reformer.
Background technology
DRI refers to that a kind of iron ore is less than under the conditions of fusion temperature the also ironmaking of original production sponge iron in stove
Production process.Sponge iron is a kind of substitute of steel scrap, is that electric furnace refines clean steel, the indispensable impurity diluent of high-quality steel,
It is the high-quality cooling agent of pneumatic steelmaking, is to develop the indispensable raw material of Ferrous Metallurgy short route.2014, the whole world was directly also
Former iron yield is 74,500,000 tons, and direct-reduction technique is classified as one of Main way of development of iron ＆ steel industry.
Due to following deficiency be present in Direct Reducing Iron Process：（1）Because Direct Reducing Iron Process needs to use catalyst,
And catalyst is expensive, cost is generally 240,000/ton, in order to avoid reformer catalyst poisoning causes the waste of catalyst,
Need to set up complicated fine desulfurizing technology and/or catalyst regeneration process, desulfurization is carried out to unstripped gas, not only limit raw material
The species of gas, and, it is necessary to which stop production to overhaul replacing or regeneration, not only have a strong impact on life after the catalyst poisoning in reformer
The normal operation of production, and increase cost of investment；（2）It is more big using the reformer of horizontal arrangement, floor space；（3）Due to de-
Sulphur technique is higher to the pressure of source of the gas, it usually needs first source of the gas is boosted and is depressured is used again after desulfurization, to fuel blower fan and
Compressor has higher requirement, it is necessary to expend substantial amounts of power resource.
The content of the invention
It is new directly also the invention discloses one kind in order to solve the problems, such as that Direct Reducing Iron Process is present in the prior art
The air supply system and technique of former iron reformer, it is filled with the vertical reformer and is urged by what porous checker brick dipping nickel was formed
Agent, using standby vertical reformer as shared regenerating furnace, the light regeneration of catalyst is realized without sulfur removal technology can, is dropped
Low energy expenditure and cost of investment.
The technical proposal of the invention is realized in this way：
On the one hand, the invention discloses a kind of air supply system of novel direct-reduction iron reformer, N+M vertical reformers, M are individual
Shaft furnace, washer, convection section, unstripped gas blower fan, combustion fan, purging motor, wherein N number of vertical reformer is as shared regeneration
Stove uses；Fuel gas passageway and feed gas passage are provided with the vertical reformer, be filled with the feed gas passage by
The catalyst that porous checker brick dipping nickel is formed, and entered by the unstripped gas in the flue gas and feed gas passage in fuel gas passageway
Row heat exchange；Gas import is reformed by pipeline and the outlet of the reformer feed gas passage on the shaft furnace, for inciting somebody to action
Feed gas catalytic without desulfurization reforms gas and is delivered to shaft furnace production DRI caused by reforming, the furnace roof on the shaft furnace
Gas exports the inlet communication with washer, and the outlet of the washer passes through the pipeline top gas import with the convection section respectively
With the inlet communication of unstripped gas blower fan；The outlet of the unstripped gas blower fan passes through pipeline and the vertical reformer feed gas passage
Inlet communication；Fuel gas outlet, gas approach, exhanst gas outlet, combustion air inlet, combustion-supporting sky are additionally provided with the convection section
Gas exports, and the gas approach of the convection section connects with the fuel gas passageway of the vertical reformer, the flue gas of the convection section
Outlet is connected by pipeline with chimney, and the combustion air inlet of the convection section connects with combustion fan, the combustion of the convection section
The outlet of material gas and fuel gas passageway of the combustion air exports respectively with the vertical reformer connect, for will be by being changed with flue gas
The top gas of heat heating is passed through in fuel gas passageway as the combustion air of fuel gas and heat exchange heating；
The purging motor connects with the feed gas passage of the vertical reformer, when catalyst poisoning in vertical reformer,
Start the vertical reformer as shared regenerating furnace to replace the vertical reformer of catalyst poisoning, and by purging motor to urging
Regeneration gas is advertised in the vertical reformer of agent poisoning, realizes that catalyst regenerates；
Wherein, N >=1, M >=1
As a kind of preferred embodiment, the catalyst is formed by the thick nickel coatings of porous checker brick dipping 0.5-1mm.
The bottom of the vertical reformer side is provided with raw material gas inlet, is set on the top of the vertical reformer opposite side
Have and reform gas outlet, be arranged in parallel feed gas passage provided with a series of between raw material gas inlet and the outlet of reformation gas, and will urge
Agent, which is placed in, to be uniformly distributed in feed gas passage, and the furnace wall of the vertical reformer is made of refractory material.
As a kind of preferred embodiment, the regeneration gas is air or oxygen, or the regeneration gas is by as blowing
The nitrogen of scavenging and as main regeneration gas air or oxygen form.The process of regeneration is：The nitrogen for being first passed through purge gass blows
Sweep, then be passed through main regeneration gas air or oxygen and regenerated, be then passed through nitrogen purging again.
As a kind of preferred embodiment, the catalyst is to impregnate the thick nickel of 0.1 ± 0.05mm by porous checker brick to apply
What layer was formed.
On the other hand, the invention also discloses a kind of air feed craft of novel direct-reduction iron reformer, shaft furnace is discharged
Top gas it is scrubbed after be divided into gas 1 and gas 2；
Gas 1 and unstripped gas, which merge, is passed through the raw material that vertical reformer is filled with the catalyst formed by porous checker brick dipping nickel
Catalytic reforming reaction is carried out in gas passage, caused reformation gas is delivered to shaft furnace production DRI as also Primordial Qi, closed circuit
Recycle；
Gas 2 and combustion air are delivered to the flue gas that convection section goes out with vertical reformation fire grate and carry out heat exchange, are dropped by heat exchange
The flue gas of temperature is discharged by chimney, is delivered to vertical reformer as fuel gas through heat exchange elevated temperature gas 2 and is made fuel gas and uses,
Vertical reformer, which is also delivered to, through heat exchange heating combustion air makees combustion-supporting gas use；Catalyst poisoning in vertical reformer
When, start as the vertical reformer for sharing regenerating furnace to replace the vertical reformer of catalyst poisoning, and pass through purging motor
Regeneration gas is advertised into the vertical reformer of catalyst poisoning.
As a kind of preferred embodiment, the regeneration gas is air or oxygen, when vertical reformer run a period of time,
When causing reforming efficiency to reduce because of catalyst poisoning, air or oxygen is blasted, the sulphur that is enriched with the porous checker brick of nickel will be impregnated
Carbon burning, the nickel of poisoning is reduced to nickel again, recover catalytic capability.
It is preferred that the regeneration gas can also be by the nitrogen as purge gass, the air or oxygen as main regeneration gas,
And the nitrogen composition blown as after.When vertical reformer operation a period of time, cause to reform because of catalyst poisoning and imitate
When rate reduces, nitrogen purging is first blasted, through diffusing the unstripped gas in the vertical reformer of hole discharge, then by blasting air or oxygen
Gas carries out catalyst regeneration；After the completion of catalyst regeneration, then blast nitrogen the air in reformer is purged it is clean, into standby
Use state.
As a kind of preferred embodiment, the catalyst is to impregnate the thick nickel of 0.1 ± 0.05mm by porous checker brick to apply
What layer was formed.
The present invention compared with prior art, has the advantages that：
（1）Using vertical reformer is covered, by the way of a part of normal use another part regeneration supply, on the one hand it is catalyzed more
Agent regeneration technology is simple, reduces investment, easy to operation；On the other hand vertical reformer is used, floor space is greatly decreased；
（2）Vertical reformer uses specific Bilateral heating mode, enhances homogeneous heating effect；
（3）Using porous checker brick leaching nickel mode, not only catalyst is simple to manufacture catalyst in vertical reformer, and is manufactured
Cost is greatly reduced（The price of catalyst in the present invention is about 20,000 yuan/ton, and the price of traditional catalyst be about 240,000/
Ton）；
（4）Because catalyst regenerates, easy to operate, cost is low, and a small amount of sulphur contained in DRI selection is taken off in steel-making
Remove so that the sulfur removal technology that unstripped gas supply need not be complicated, and then make the applicability of unstripped gas wide, optional coke-stove gas,
The kinds of gas sources such as natural gas, coal gas, coal bed gas, facilitate Supplying gas condition；
（5）The integrated artistic of the present invention is simple and convenient to operate, it is not necessary to unstripped gas boosting reduced pressure operation again, often covers the confession of operation
Gas blower fan（Unstripped gas blower fan and purging motor difference）Only need a common blower fan, without this kind of high energy consumption in the prior art,
The blower fan of high cost, blower fan quantity are reduced, and greatly save power resource；
（6）The present invention uses low pressure plenum system, is easy to shaft furnace to operate, and the requirement to system equipment and pipeline reduces, and then drops
Low investment cost and fault rate.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the artwork of the embodiment of the present invention 1.
Fig. 2 is the sectional view of vertical reformer in the embodiment of the present invention 1.
In figure：1st, the vertical reformers of 1#；2nd, the vertical reformers of 2#；3rd, the vertical reformers of 3#；4th, 1# shaft furnaces；5th, 2# shaft furnaces；
6th, 1# washers；7th, 2# washers；8th, 1# unstripped gas blower fan；9th, 2# unstripped gas blower fan；10th, 1# convection sections；11st, 2# convection sections；
12nd, 1# chimneys；13rd, 2# chimneys；14th, 1# combustion fans；15th, 2# combustion fans；16th, 3# purging motors.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Embodiment 1
The air supply system of novel direct-reduction iron reformer as illustrated in fig. 1 and 2, including the vertical reformers 1 of 1#, the vertical reformers of 2#
2nd, the vertical reformers 3 of 3#, 1# shaft furnaces 4,2# shaft furnaces 5,1# washers 6,2# washers 7,1# unstripped gas blower fan 8,2# unstripped gas wind
Machine 9,1# convection sections 10,2# convection sections 11,1# chimneys 12,2# chimneys 13,1# purging motors 14,2# purging motors 15,3# purgings
Blower fan 16 and a series of valves for being used to realize that pipeline is opened, closes and switched, the vertical reformers 2 of wherein 2#, which are used as, to be shared
Regenerating furnace uses；Fuel gas passageway and feed gas passage are equipped with vertical reformer, is filled with feed gas passage by more
The catalyst that hole checker brick dipping nickel is formed, and carried out by the unstripped gas in the flue gas and feed gas passage in fuel gas passageway
Heat exchange；1# shaft furnaces 4（2# shaft furnaces 5）On the import of reformation gas pass through pipeline and the vertical reformers 1 of 1#（The vertical reformers 3 of 3#）Raw material
The outlet of gas passage, 1# is delivered to as also Primordial Qi for the feed gas catalytic without desulfurization to be reformed into caused gas of reforming
Shaft furnace 4（2# shaft furnaces 5）Produce DRI, 1# shaft furnaces 4（2# shaft furnaces 5）On top gas outlet with 1# washers 6（2# is washed
Wash device 7）Inlet communication, 1# washers 6（2# washers 7）Outlet by pipeline respectively with 1# convection sections 10（2# convection sections
11）Top gas import and 1# unstripped gas blower fan 8（2# unstripped gas blower fan 9）Inlet communication；1# unstripped gas blower fan 8（2# raw materials
Gas blower fan 9）Outlet pass through pipeline and the vertical reformers 1 of 1#（The vertical reformers 3 of 3#）The inlet communication of feed gas passage；1# pairs
Flow section 10（2# convection sections 11）On be additionally provided with fuel gas outlet, gas approach, exhanst gas outlet, combustion air inlet, combustion air
Outlet, 1# convection sections 10（2# convection sections 11）Gas approach and the vertical reformers 1 of 1#（The vertical reformers 3 of 3#）Fuel gas lead to
Road connects, 1# convection sections 10（2# convection sections 11）Exhanst gas outlet pass through pipeline and 1# chimneys 12（2# chimneys 13）Connection, 1# pairs
Flow section 10（2# convection sections 11）Combustion air inlet and 1# combustion fans 14（2# combustion fans 15）Connection, 1# convection sections 10
（2# convection sections 11）Fuel gas outlet and combustion air exports reformer 1 vertical with 1# respectively（The vertical reformers 3 of 3#）Combustion
The connection of gas passage is expected, for will lead to by the combustion air for being used as fuel gas and heat exchange heating with the top gas that flue gas heat exchange heats up
Enter in fuel gas passageway.
Wherein, each vertical reformer side in the vertical reformers 1 of 1#, the vertical reformers 2 of 2#, the vertical reformers 3 of 3#
Bottom is provided with raw material gas inlet, is provided with the top of vertical reformer opposite side and reforms gas outlet, in raw material gas inlet and reformation
Feed gas passage is arranged in parallel provided with a series of between gas outlet, and catalyst is placed in and is uniformly distributed in feed gas passage,
The furnace wall of vertical reformer is made of refractory material；The catalyst is by nickel coating thick porous checker brick dipping 1mm
Formed.
The technique is：By shaft furnace discharge top gas it is scrubbed after be divided into gas 1 and gas 2；
Gas 1 and unstripped gas, which merge, is passed through the vertical reformers 1 of 1#（The vertical reformers 3 of 3#）It is filled with and impregnates nickel by porous checker brick
Catalytic reforming reaction is carried out in the feed gas passage of the catalyst of formation, caused reformation gas is delivered to 1# shaft furnaces as also Primordial Qi
4（2# shaft furnaces 5）DRI is produced, closed cycle uses；
Gas 2 and combustion air are delivered to 1# convection sections 10（2# convection sections 11）Reformer 1 vertical with 1#（The vertical reformers 3 of 3#）
The flue gas of discharge carries out heat exchange, and the flue gas to cool by heat exchange passes through 1# chimneys 12（2# chimneys 13）Discharge, through heat exchange
Elevated temperature gas 2 is delivered to the vertical reformers 1 of 1# as fuel gas（The vertical reformers 3 of 3#）Make fuel gas use, through heat exchange liter
Warm combustion air is also delivered to the vertical reformers 1 of 1#（The vertical reformers 3 of 3#）Make combustion-supporting gas to use；When in the vertical reformers 1 of 1#
Catalyst poisoning when, start the vertical reformers 2 of 2# as shared regenerating furnace to replace the vertical reformations of the 1# of catalyst poisoning
Stove 1, and regeneration gas is advertised into the vertical reformers 1 of 1# of catalyst poisoning by 3# purging motors 16.
Specifically blowing method is：Nitrogen purging is first blasted, through diffusing the unstripped gas in the hole discharge vertical reformers 1 of 1#, so
Afterwards catalyst regeneration is carried out by blasting air or oxygen；After the completion of catalyst regeneration, then nitrogen is blasted by the vertical reformations of 1#
Air purging in stove 1 is clean, into stand-by state.
When vertical 3 catalyst poisonings of reformer of 3#, corresponding operation is performed.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (9)
- A kind of 1. air supply system of novel direct-reduction iron reformer, it is characterised in that including：N+M vertical reformers, M are individual perpendicular Stove, washer, convection section, unstripped gas blower fan, combustion fan, purging motor, wherein N number of vertical reformer is as shared regenerating furnace Use；Fuel gas passageway and feed gas passage are provided with the vertical reformer, is filled with the feed gas passage by more The catalyst that hole checker brick dipping nickel is formed, and carried out by the unstripped gas in the flue gas and feed gas passage in fuel gas passageway Heat exchange；Outlet of the gas import by pipeline and the reformer feed gas passage is reformed on the shaft furnace, for will not Feed gas catalytic through desulfurization reforms gas and is delivered to shaft furnace production DRI caused by reforming, the top gas on the shaft furnace Outlet and the inlet communication of washer, the outlet of the washer by pipeline respectively with the top gas import of the convection section and The inlet communication of unstripped gas blower fan；The outlet of the unstripped gas blower fan passes through pipeline and the vertical reformer feed gas passage Inlet communication；Fuel gas outlet, gas approach, exhanst gas outlet, combustion air inlet, combustion air are additionally provided with the convection section Outlet, the gas approach of the convection section connect with the fuel gas passageway of the vertical reformer, and the flue gas of the convection section goes out Mouth is connected by pipeline with chimney, and the combustion air inlet of the convection section connects with combustion fan, the fuel of the convection section Gas export and fuel gas passageway of the combustion air exports respectively with the vertical reformer connect, for will by with flue gas heat exchange The top gas of heating is passed through in fuel gas passageway as the combustion air of fuel gas and heat exchange heating；The purging motor connects with the feed gas passage of the vertical reformer, when catalyst poisoning in vertical reformer, Start the vertical reformer as shared regenerating furnace to replace the vertical reformer of catalyst poisoning, and by purging motor to urging Regeneration gas is advertised in the vertical reformer of agent poisoning, realizes that catalyst regenerates；Wherein, N >=1, M >=1.
- 2. the air supply system of novel direct-reduction iron reformer as claimed in claim 1, it is characterised in that：The catalyst be by What nickel coating thick porous checker brick dipping 0.5-1mm was formed.
- 3. the air supply system of novel direct-reduction iron reformer as claimed in claim 1, it is characterised in that：The vertical reformer The bottom of side is provided with raw material gas inlet, is provided with the top of the vertical reformer opposite side and reforms gas outlet, in unstripped gas Feed gas passage is arranged in parallel provided with a series of between import and the outlet of reformation gas, and catalyst is placed in and is uniformly distributed in raw material In gas passage, the furnace wall of the vertical reformer is made of refractory material.
- 4. the air supply system of novel direct-reduction iron reformer as claimed in claim 1, it is characterised in that：The regeneration gas is sky Gas or oxygen.
- 5. the air supply system of novel direct-reduction iron reformer as claimed in claim 1, it is characterised in that：The regeneration gas be by What the nitrogen as purge gass and the air or oxygen as main regeneration gas formed.
- A kind of 6. air feed craft of novel direct-reduction iron reformer, it is characterised in that：The top gas that shaft furnace is discharged is scrubbed After be divided into gas 1 and gas 2；Gas 1 and unstripped gas, which merge, is passed through the raw material that vertical reformer is filled with the catalyst formed by porous checker brick dipping nickel Catalytic reforming reaction is carried out in gas passage, caused reformation gas is delivered to shaft furnace production DRI as also Primordial Qi, closed circuit Recycle；Gas 2 and combustion air are delivered to the flue gas that convection section goes out with vertical reformation fire grate and carry out heat exchange, are dropped by heat exchange The flue gas of temperature is discharged by chimney, is delivered to vertical reformer as fuel gas through heat exchange elevated temperature gas 2 and is made fuel gas and uses, Vertical reformer, which is also delivered to, through heat exchange heating combustion air makees combustion-supporting gas use；Catalyst poisoning in vertical reformer When, start as the vertical reformer for sharing regenerating furnace to replace the vertical reformer of catalyst poisoning, and pass through purging motor Regeneration gas is advertised into the vertical reformer of catalyst poisoning.
- 7. the air supply system of novel direct-reduction iron reformer as claimed in claim 6, it is characterised in that：The regeneration gas is sky Gas or oxygen.
- 8. the air supply system of novel direct-reduction iron reformer as claimed in claim 6, it is characterised in that：The regeneration gas be by What the nitrogen as purge gass and the air or oxygen as main regeneration gas formed.
- 9. the air supply system of novel direct-reduction iron reformer as claimed in claim 6, it is characterised in that：The catalyst be by What nickel coating thick porous checker brick dipping 0.5-1mm was formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711261304.3A CN107674934A (en) | 2017-12-04 | 2017-12-04 | A kind of air supply system and technique of novel direct-reduction iron reformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711261304.3A CN107674934A (en) | 2017-12-04 | 2017-12-04 | A kind of air supply system and technique of novel direct-reduction iron reformer |
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| Publication Number | Publication Date |
|---|---|
| CN107674934A true CN107674934A (en) | 2018-02-09 |
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| CN201711261304.3A Pending CN107674934A (en) | 2017-12-04 | 2017-12-04 | A kind of air supply system and technique of novel direct-reduction iron reformer |
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| CN110578027A (en) * | 2019-10-09 | 2019-12-17 | 中石化南京工程有限公司 | novel reforming furnace for producing reducing gas |
| CN110578027B (en) * | 2019-10-09 | 2024-04-30 | 中石化南京工程有限公司 | Novel reformer for producing reducing gas |
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Cited By (2)
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| CN110578027A (en) * | 2019-10-09 | 2019-12-17 | 中石化南京工程有限公司 | novel reforming furnace for producing reducing gas |
| CN110578027B (en) * | 2019-10-09 | 2024-04-30 | 中石化南京工程有限公司 | Novel reformer for producing reducing gas |
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