CN106006577A - Ammonia cracker - Google Patents
Ammonia cracker Download PDFInfo
- Publication number
- CN106006577A CN106006577A CN201610334220.7A CN201610334220A CN106006577A CN 106006577 A CN106006577 A CN 106006577A CN 201610334220 A CN201610334220 A CN 201610334220A CN 106006577 A CN106006577 A CN 106006577A
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- China
- Prior art keywords
- retort
- pyrolysis furnace
- ammonia
- air inlet
- housing
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
- C01B3/047—Decomposition of ammonia
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to an ammonia cracker, characterized by comprising: a housing having a receiving space for vacuum welding; a reaction tank disposed in the receiving space of the housing and fixedly connected with the housing; an intake line communicated with the reaction tank and used for introducing a reaction gas into the reaction tank; an exhaust line disposed at the top of the reaction tank and which extends into the reaction tank, with an intake port of the exhaust line positioned at the bottom of the reaction tank and used for exhausting a gas generated in the reaction tank; a heating module disposed in the receiving space of the housing and which sleeves the reaction tank and is used for heating the reaction tank, with the heating module including a ceramic fiber module and a heating wire cast and fixed in the ceramic fiber module, wherein the heating wire is close to the reaction tank and partially exposed from the ceramic fiber module. The ammonia cracker is simple in structure, convenient to assemble, cost-saving, and secure and reliable.
Description
Technical field
The present invention relates to nitriding field, refer in particular to a kind of ammonia pyrolysis furnace.
Background technology
Nitriding is surface hardening process, improves wearability, impact strength and anticorrosion for surface of the work
Erosion performance.Just come out although this technique went out as far back as this century, but seldom understand for people.The most not
Being same as carburizing, the control of nitridation process is more complicated, and traditional control mode hardly results in reproducible
The product that precision is high.Up to date, the exploitation accurately controlled due to nitridation process, the most gradually cause people
Attention.
At present, the ammonia cracker that forvacuum nitriding furnace production line is configured substantially is put
Putting on the ground, its furnace lining is built by laying bricks or stones by heat resisting brick and is formed, and causes itself mass ratio heavier, takes up an area face
Long-pending the biggest.In traditional ammonia pyrolysis furnace, heater strip uses hanging wire structure, will hang by heater strip
Putting inside furnace lining on brick, once heater strip damages, and it is the most convenient to repair.Additionally in pyrolysis furnace
Retort be chronically under high temperature (about 1000 DEG C) state, when pressure inside the tank raises, if can not and
Time pressure release, retort is easy to dilatancy, even splits, especially the cylinder of retort and end socket
Joint is easier to damage.The most still lack at present that a kind of simple in construction, outward appearance be light and handy, stable performance and product
The ammonia pyrolysis furnace that tolerance is bigger.
Summary of the invention
It is an object of the invention to overcome the defect of prior art, it is provided that a kind of ammonia pyrolysis furnace, solve
In prior art, furnace lining causes device quality to weigh, floor space is big, heater strip uses hanging wire structural repair
The problems such as inconvenient and retort is yielding.
The technical scheme realizing above-mentioned purpose is:
The invention provides a kind of ammonia pyrolysis furnace, it is characterised in that including:
Housing, has the accommodation space of vacuum welding；
It is placed in the retort in the accommodation space of described housing, is connected with described housing fixing；
The air inlet pipeline connected with described retort, the gas outlet of described air inlet pipeline is positioned at described reaction
The top of tank, for being passed through reacting gas in described retort；
Being located at the gas exhaust piping at the top of described retort, described gas exhaust piping stretches in described retort
And the air inlet of described gas exhaust piping is positioned at the bottom of described retort, it is used for discharging in described retort
The gas generated；And
It is placed in the heating module in the accommodation space of described housing, is sheathed in described retort, is used for
Heating described retort, described heating module includes ceramic fiber module and is fixed on institute with pouring
Stating the heater strip in ceramic fiber module, described heater strip is arranged near described retort and part is exposed
In described ceramic fiber module.
Use heater strip and ceramic fiber module one-piece casting molding, compact conformation, it is possible to effectively reduce
The volume of heating module such that it is able to prepare the ammonia pyrolysis furnace of compact, in use, can be by
Ammonia pyrolysis furnace is positioned on the body of heater of nitriding furnace, saves floor space.The structure design of heating module,
Per unit area heater power is improved, in conjunction with the low heat capacity of ceramic fiber module, lower thermal conductivity and
The advantage that wind erosion-resistance performance is high, this heating module has excellent heat stability and thermal shock resistance.Will
Air inlet pipeline and gas exhaust piping are all located at the top of retort so that simple in construction, easy to assembly, joint
Cost-saving.
Further improvement is that of ammonia pyrolysis furnace of the present invention, described ceramic fiber module in the form of a ring, institute
State heater strip to be embedded in the shape of a spiral at the inwall of ring-type described ceramic fiber module.
Further improvement is that of ammonia pyrolysis furnace of the present invention, between described heater strip and described retort
It is installed with space.
Further improvement is that of ammonia pyrolysis furnace of the present invention, between described housing and described heating module
Being provided with thermal insulation layer, described thermal insulation layer is ceramic fiber blanket.
Further improvement is that of ammonia pyrolysis furnace of the present invention, the bore of described gas exhaust piping is more than described
The bore of air inlet pipeline.
Further improvement is that of ammonia pyrolysis furnace of the present invention, on described air inlet pipeline at air inlet
It is provided with nitrogen blow valve port, described air inlet pipeline is provided with air relief valve, needle-valve, effusion meter, pneumatic
Angle pedestal valve, check valve and Pressure gauge.
Further improvement is that of ammonia pyrolysis furnace of the present invention, on described gas exhaust piping at gas outlet
It is provided with exhaust outlet, described gas exhaust piping is equiped with pressure switch, controlled by described pressure switch
The connection of described exhaust outlet.
Further improvement is that of ammonia pyrolysis furnace of the present invention, described gas exhaust piping is equiped with explosion-proof
The pneumatic angle pedestal valve of the gas outlet folding of lid, cooling coil and control gas exhaust piping.
Further improvement is that of ammonia pyrolysis furnace of the present invention, the bottom of described housing is provided with thermoelectricity
Even, in described thermocouple stretches into described housing and top is near described retort, be used for sensing described instead
Answering the temperature of tank and send the temperature of sensing to control unit, described control unit is according to the sense received
Testing temperature controls the operation of described heating module.
Further improvement is that of ammonia pyrolysis furnace of the present invention, is filled with catalyst in described retort.
Accompanying drawing explanation
Fig. 1 is the sectional view of ammonia pyrolysis furnace of the present invention.
Fig. 2 is the front view of ammonia pyrolysis furnace of the present invention.
Fig. 3 is the side view of ammonia pyrolysis furnace of the present invention.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
The invention provides a kind of ammonia pyrolysis furnace, it is achieved replace passing by vacuum forming ceramic fiber module
The heat resisting brick furnace lining of system, and heater strip is embedded in ceramic fiber module, and the row of ammonia pyrolysis furnace
Air pipe adds Explosion-proof cap and pressure switch and normally opened pneumatic angle pedestal valve, to guarantee ammonia pyrolysis furnace
Use safety.The ammonia pyrolysis furnace volume of the present invention is light and handy, can be placed directly in forvacuum nitridation
On the housing of stove, can save ground space, have simple in construction, simple operation, control accuracy is high
And safe and reliable feature.Below in conjunction with the accompanying drawings ammonia pyrolysis furnace of the present invention is illustrated.
Refering to shown in Fig. 1, it is shown that the sectional view of ammonia pyrolysis furnace of the present invention.Below in conjunction with Fig. 1,
The structure of ammonia pyrolysis furnace of the present invention is illustrated.
As it is shown in figure 1, ammonia pyrolysis furnace of the present invention includes housing 11, retort 12, air inlet pipeline
13, gas exhaust piping 14, heating module 15 and thermal insulation layer 17, housing 11 is closed structure,
Using sheet material and section bar vacuum to seal to be welded, this housing 11 preferably cylinder, at housing 11
Inside it is formed with accommodation space；Retort 12 is placed in the accommodation space of housing 11, this retort 12
Be connected fixing with housing 11, the effect of retort 12 is the cracking reaction offer reative cell for ammonia；
Air inlet pipeline 13 connects with retort 12, and the gas outlet 132 of this air inlet pipeline 13 is positioned at retort
The top of 12, for being passed through reacting gas in retort 12, this reacting gas is ammonia, air inlet
Pipeline 13 is communicated in the air inlet at retort 12 top, is set the gas outlet 132 of air inlet pipeline 13
Top in retort 12 so that ammonia is passed through from the top of retort 12, moves downward at ammonia
During crack, it can be ensured that the cracking of ammonia is complete；Gas exhaust piping 14 is located at retort
The top of 12, in this gas exhaust piping 14 stretches into retort 12 and the air inlet 141 of this gas exhaust piping 14
It is positioned at the bottom of retort 12, by gas exhaust piping 14, the gas generated in retort 12 is discharged；
Heating module 15 is placed in the accommodation space of housing 11, and this heating module 15 is set in retort 12
Outward, for retort 12 is heated.This heating module 15 includes ceramic fiber module 151
With pour the heater strip 152 being fixed in ceramic fiber module 151, this heater strip 152 is near reaction
Tank 12 is arranged and part is exposed to ceramic fiber module 151, and ceramic fiber module 151 is ring-type knot
Structure, is internally formed the hollow structure of tubular, is set in retort 12 by this hollow structure, and
Heater strip 152 is set at the inwall of hollow structure.Thermal insulation layer 17 is located at housing 11 and heating module 15
Between, serve heat insulation effect.
Heating module 15 uses ceramic fibre and heater strip 152 one-piece casting molding, and ceramic fibre is adopted
Make ceramic fiber module 151 with vacuum forming technique, when vacuum forming, heater strip 152 is put
In the position set so that pour the heater strip after molding 152 and be positioned at ring-type ceramic fiber module
At the inwall of 151, and heater strip 152 has part to be exposed to the inwall of ceramic fiber module 151.Pottery
Porcelain fibre module 151 have low heat capacity, lower thermal conductivity, good springiness, wind erosion-resistance performance good and
Excellent heat stability and thermal shock resistance.It is preferred that the cylinder that heating module 15 is in the form of a ring,
The middle part of heating module 15 defines hollow structure, and heater strip 151 is positioned at hollow structure, so
Making heating module 15 when heating, at hollow structure, temperature is higher, and ceramic fiber module 151
Thermal conductivity low, so the periphery temperature of heating module 15 will not be the highest, it is to avoid high temperature is to housing
The impact in 11 life-spans.Heater strip 152 uses FeCrAl heater strip, and heater strip 152 is spiral
It is embedded in ceramic fiber module 151 so that heater strip 152 per unit area heater power is high.Heating
Silk and ceramic fiber module one-piece casting, the volume of molding is little, decreases installing space so that ammonia
Pyrolysis furnace overall structure is smaller and more exquisite.It is preferred that ammonia pyrolysis furnace to be made the cylindrical shape of vertical installation
Structure, compact, and the bottom of housing 11 arrange installation leg, by installing leg by ammonia
Pyrolysis furnace is positioned on the housing of nitriding furnace, saves the floor space of equipment.
Being installed with space 16 between retort 12 and heater strip 151, this space 16 is for guaranteeing to add
The safety of heated filament 151, the tank body of retort 12 is heat resisting steel material, has electric conductivity, if reaction
Tank 12 contacts with heater strip 151, and heater strip 151 short circuit can be made to be damaged.It addition,
Ammonia cracking in retort 12 produces nitrogen and hydrogen, and after ammonia cracking, volume becomes big, can draw
The tank 12 that reacts has certain deformation, and the also deformation for retort 12 of this space 16 provides certain
Space, it is ensured that the safety of whole pyrolysis furnace.
Thermal insulation layer 17 is arranged between housing 11 and heating module 15, and this thermal insulation layer 17 is attached at shell
On the medial surface of body 11, thermal insulation layer 17 is ring-type column construction, and thermal insulation layer 17 uses pottery fine
Dimension blanket, has low heat capacity, lower thermal conductivity, excellent heat stability and thermal shock resistance, it is possible to effectively
Reduction body of heater accumulation of heat loss and radiation loss.This thermal insulation layer 17 is positioned on the base plate of housing 11,
Being placed with heat insulating mattress 18 on the base plate of housing 11, heat insulating mattress 18 is circular configuration, heat insulating mattress 18
It is resisted against the internal face of thermal insulation layer 17.Heat insulation loop 19 it is placed with at the top of heat insulating mattress 18, heat insulation
The diameter of ring 19 boring structure is less than the diameter of the hollow structure within heating module 15, heating
The bottom face of module 15 is placed in heat insulation loop 19, and the diameter of the hollow-core construction of this heat insulation loop 19 is more than
The diameter of retort 12, the hollow-core construction of heat insulation loop 19 is that the deformation of retort 12 provides deformation
Space.The heat insulation loop 20 being set in retort 12, this heat insulation loop it is provided with at the top of housing 11
The bottom of 20 fits with the top of heating module 15, the inwall of heat insulation loop 20 and retort 12
Outer wall fits.Heat insulating mattress 18, heat insulation loop 19 and heat insulation loop 20 use as thermal insulation layer 17
Material, i.e. ceramic fiber blanket, the so surrounding in housing 11 are provided with heat-barrier material, pass through
Heating module 15 cladding is got up by thermal insulation layer 17, heat insulating mattress 18, heat insulation loop 19 and heat insulation loop 20,
Prevent the thermal loss that heating module 15 produces, effectively reduce accumulation of heat loss and heat radiation in pyrolysis furnace
Loss, serves preferable heat-blocking action.
Shown in Fig. 2 and Fig. 3, air inlet pipeline 13 and gas exhaust piping 14 are all located at ammonia pyrolysis furnace
Top, be also located at the top of retort 12, air inlet pipeline 13 has air inlet 131 and gas outlet
132, gas exhaust piping 14 has air inlet 141 and gas outlet 142, and air inlet pipeline 13 is for instead
Reacting gas it is passed through, the gas row that gas exhaust piping 14 generates in by retort 12 in answering tank 12
Go out, air inlet pipeline 13 and gas exhaust piping 14 are all located at the top of ammonia pyrolysis furnace so that ammonia splits
Solve the simple in construction of stove, it is simple to install.The gas being passed through in retort 12 is ammonia, and ammonia splits
Solution becomes nitrogen and hydrogen, for accelerating ammonia rate of cleavage, improves production efficiency, in retort 12
It is filled with catalyst 26.Catalyst 26 cracks special nickel catalyst for ammonia, and ammonia is from retort 12
Top be passed through, through heating and catalyst be cracked into nitrogen and hydrogen, then from retort
Gas exhaust piping 14 bottom 12 discharges retort 12, and gas exhaust piping 14 uses heat resisting pipe.Due to
Ammonia volume after catalytic pyrolysis becomes big, therefore is designed as the bore of gas exhaust piping 14 more than air inlet
The bore of pipeline 13.Retort 12 is column structure, and its cylinder uses heat resisting steel centrifugal casting to form,
Bottom uses heat resisting steel end socket and barrel soldering, uses flange to fix between retort 12 and housing 11
Connect.Retort 12 is the cylindrical structure of hollow, increases catalysis area, in nickel catalytic action
It is more abundant that lower ammonia cracks.
Air relief valve, needle-valve, effusion meter, pneumatic angle pedestal valve, check valve are installed on air inlet pipeline 13
And Pressure gauge, can accurately control to be passed through the flow of reacting gas from air inlet pipeline 13.Air inlet pipe
The air inlet 131 on road 13 connects ammonia bottle, and the effect of voltage stabilizing is played in the effect of air relief valve so that logical
The ammonia pressure entered is constant.Needle-valve plays fine setting ammonia and is passed through the effect of flow, by adjusting needle-valve
Pore size, realizes controlling the flow of ammonia.Pneumatic angle pedestal valve is for controlling air inlet pipeline 13
Connection and closing, when energising, this pneumatic angle pedestal valve is opened, it is achieved by gas outlet 132 to retort
Reacting gas it is passed through in 12.Check valve is used for preventing gas from pouring in down a chimney, and i.e. prevents the gas in retort 12
Body guides and flows out from air inlet pipeline 13.Pressure gauge is for reacting the pressure state of air inlet pipeline 13.?
Being additionally provided with nitrogen blow valve port at the air inlet 132 of air inlet pipeline 13, nitrogen blow valve port is positioned at retort
The top of 12, nitrogen blow valve port is communicated on air inlet pipeline 13 in the way of an air inlet branch road, this nitrogen
Gas blow valve port is for guaranteeing the safe handling of ammonia pyrolysis furnace.When normal productive process has a power failure suddenly,
For the sake of security, it is passed through nitrogen in retort 12 from nitrogen blow valve port, displacement reaction tank 12
Interior cracking atmosphere, it is outside, by aerofluxus that the cracking atmosphere remained in making pipe discharges retort 12
The gas outlet 142 fire curtain of pipeline 14 burns.It addition, after use completes, it is also desirable to carry out nitrogen
Air-blowing is swept, with the cracking gas remained in displacing retort 12.If ammonia pyrolysis furnace is through long-time not busy
Postpone again before new use, also can carry out nitrogen purging, thus improve the safety of equipment.
It is equiped with Explosion-proof cap 22, cooling coil 23 on gas exhaust piping 14 and controls gas exhaust piping
The pneumatic angle pedestal valve of gas outlet 142 folding, this pneumatic angle pedestal valve is normally-closed pneumatic angle pedestal valve, in energising
Time this normally-closed pneumatic angle pedestal valve open, i.e. open gas outlet 142 and be exhausted, this is normally closed when power is off
Pneumatic angle pedestal valve is closed, and i.e. closes gas outlet 142.Near gas outlet 142 on gas exhaust piping 14
Place is provided with exhaust outlet, is provided with normally opened pneumatic angle pedestal valve at this exhaust outlet, and i.e. when energising, this is normally opened
Pneumatic angle pedestal valve is closed mode, i.e. closes exhaust outlet, and when power is off, this normally opened pneumatic angle pedestal valve is
Open mode, i.e. opens exhaust outlet and is exhausted.Exhaust outlet is communicated in row with the form of an exhaust branch
On air pipe 14, under normal circumstances, the path of this exhaust outlet is close.At gas exhaust piping 14
On be equiped with pressure switch 21, gas exhaust piping 14 is divided into two branch roads after pressure switch 21,
The end of one branch road forms exhaust outlet, and the end of another branch road forms air vent 142, pressure switch
12 are provided with a pressure set points, and when the pressure of gas exhaust piping 14 is higher than pressure set points, pressure is opened
Close 12 to be opened by the normally opened pneumatic angle pedestal valve of exhaust outlet branch road, retort to be carried out by exhaust outlet
Pressure release, protection retort is unlikely at high temperature because of tank inner volume dilatancy.Pressure switch 12
Arrange, it is possible to solve the problem that reaction pressure inside the tank raises to a certain extent, retort is played peace
Full guard effect.
The Explosion-proof cap 22 of installing on gas exhaust piping 14, for the pressure anomaly moment liter in retort
Gao Shi, carries out pressure release by opening Explosion-proof cap 22, and the force value of this Explosion-proof cap 22 is higher than pressure switch
The setting value of 21, the force value damaged less than retort, it is possible to effectively protection retort 12.Instead
When answering tank interior due to maloperation moment generation high pressure and have little time by exhaust outlet pressure release, this pressure is higher than
The burst pressure of Explosion-proof cap 22, will make Explosion-proof cap explosion pressure release, thus serve multiple protective
The effect of retort.The cooling coil 23 of installing on gas exhaust piping 14 is for carrying out expellant gas
Cooling.
Thermocouple 24 is installed, in thermocouple 24 stretches into housing 11 and top in the bottom of housing 11
Near retort 12, this thermocouple 24 is for the temperature sensing retort 12 temperature that will toss about
Hair is to control unit, and this control unit is PLC, and control unit is according to the sensing temperature control received
The operation of heating module 15 processed.Thermocouple 24 uses a double Zhi Sixin armoured thermocouple, it is possible to essence
Really sense the temperature of retort 12.
Sidepiece at housing 11 is provided with multiple rosette 25, this rosette 25 and heating module 15
Connecting, for powering for heating module 15, control unit controls to be connected, for root with rosette 25
Control the folding of power switch in rosette 25 according to the temperature of thermocouple 24 sensing, add realizing control
The operation of thermal modules 15.Rosette 25 is the lead-out wire wiring use of heating module 15, at lead-out wire
Upper set last layer high-temperature insulation ceramic cap, it is possible to effectively insulate, it is to avoid heater strip is short-circuited fault.
When pressure in retort 12 raises the setting value reaching pressure switch 21, pressure switch 21 meeting
The transmission signal of telecommunication is to control unit, and control unit can send control instruction to alarm, sends acousto-optic report
Alert.Control unit also control to connect arrange on air inlet pipeline 12 air relief valve, needle-valve, effusion meter,
Pneumatic angle pedestal valve, check valve and Pressure gauge, to realize automatically controlling the flow that gas enters.
Below the operation principle of ammonia pyrolysis furnace of the present invention is illustrated.
The ammonia pyrolysis furnace simple in construction of the present invention, compact, in use, by ammonia pyrolysis furnace
It is placed directly on the body of heater of nitriding furnace, saves floor space.The air inlet pipeline 13 of ammonia pyrolysis furnace
Connection ammonia bottle, is then passed through the ammonia in ammonia bottle to retort 12 by air inlet 131,
The ammonia entered in retort 12 cracks through the heating of heating module 15 and the effect of catalyst 26,
Generate nitrogen and hydrogen, the nitrogen of generation and hydrogen and discharge outside retort 12 by gas exhaust piping 14,
Nitridation process is carried out, for nitriding furnace in the gas outlet 142 of gas exhaust piping 14 enters into nitriding furnace
Protective atmosphere needed for nitridation process is provided, and participates in nitrogen gesture in regulating stove.Heat up in retort 12
During, retort 12 volume expansion, the normally opened pneumatic angled seat at the exhaust outlet of gas exhaust piping
Valve is opened, by this road to retort 12 pressure release.In retort 12, pressure raises, and reaches at pressure
During the setup pressure value of pressure switch 21, normally opened pneumatic angle pedestal valve connection exhaust outlet can be opened, pass through
Exhaust outlet pressure release.When pressure unexpected moment raises, when force value reaches the force value of Explosion-proof cap 22,
This Explosion-proof cap 22 explosion carries out pressure release, retort 12 will not be caused damage.Entered by blow valve port
During row nitrogen purging, exhaust outlet is also at connected state, the gas being passed through by purging and retort 12
The cracked gas of interior residual is discharged, and the cracking gas that purging is discharged is burnt by fire curtain at exhaust outlet.
Ammonia is cracked to form nitrogen and hydrogen under high temperature and Raney nickel effect, nitrogenizes to forvacuum
Stove provides protective atmosphere, simultaneously participates in the nitrogen gesture reconciled in nitriding furnace.When nitrogen gesture height in nitriding furnace,
The ammonia amount being passed through in ammonia pyrolysis furnace strengthens, and cracking produces more nitrogen and hydrogen is passed through nitriding furnace
In so that in nitriding furnace, nitrogen potential drop is low.When nitrogen gesture is less than setting value in nitriding furnace, it is passed through ammonia and splits
The ammonia amount solving stove reduces, and the straight-through ammonia amount being simultaneously passed through nitriding furnace increases, and improves nitrogen gesture.Nitrogen gesture
Control process by control unit realize automatically control.
Above in association with accompanying drawing embodiment, the present invention is described in detail, ordinary skill people in this area
The present invention can be made many variations example by member according to the above description.Thus, some details in embodiment
Should not constitute limitation of the invention, the present invention by the scope that defines using appended claims as this
The protection domain of invention.
Claims (10)
1. an ammonia pyrolysis furnace, it is characterised in that including:
Housing, has the accommodation space of vacuum welding；
It is placed in the retort in the accommodation space of described housing, is connected with described housing fixing；
The air inlet pipeline connected with described retort, the gas outlet of described air inlet pipeline is positioned at described reaction
The top of tank, for being passed through reacting gas in described retort；
Being located at the gas exhaust piping at the top of described retort, described gas exhaust piping stretches in described retort
And the air inlet of described gas exhaust piping is positioned at the bottom of described retort, it is used for discharging in described retort
The gas generated；And
It is placed in the heating module in the accommodation space of described housing, is sheathed in described retort, is used for
Heating described retort, described heating module includes ceramic fiber module and is fixed on institute with pouring
Stating the heater strip in ceramic fiber module, described heater strip is arranged near described retort and part is exposed
In described ceramic fiber module.
2. ammonia pyrolysis furnace as claimed in claim 1, it is characterised in that described ceramic fibre mould
In the form of a ring, described heater strip is embedded in the inwall of ring-type described ceramic fiber module to block in the shape of a spiral
Place.
3. ammonia pyrolysis furnace as claimed in claim 1 or 2, it is characterised in that described heater strip
And it is installed with space between described retort.
4. ammonia pyrolysis furnace as claimed in claim 1, it is characterised in that described housing is with described
Being provided with thermal insulation layer between heating module, described thermal insulation layer is ceramic fiber blanket.
5. ammonia pyrolysis furnace as claimed in claim 1, it is characterised in that described gas exhaust piping
Bore is more than the bore of described air inlet pipeline.
6. the ammonia pyrolysis furnace as described in claim 1 or 6, it is characterised in that described air inlet pipe
At air inlet, it is provided with nitrogen blow valve port on road, described air inlet pipeline is provided with air relief valve, pin
Valve, effusion meter, pneumatic angle pedestal valve, check valve and Pressure gauge.
7. the ammonia pyrolysis furnace as described in claim 1 or 6, it is characterised in that described exhaustor
At gas outlet, it is provided with exhaust outlet on road, described gas exhaust piping is equiped with pressure switch, passes through
Described pressure switch controls the connection of described exhaust outlet.
8. ammonia pyrolysis furnace as claimed in claim 7, it is characterised in that on described gas exhaust piping
It is equiped with the pneumatic angle pedestal valve of the gas outlet folding of Explosion-proof cap, cooling coil and control gas exhaust piping.
9. ammonia pyrolysis furnace as claimed in claim 1, it is characterised in that the bottom of described housing
Being provided with thermocouple, described thermocouple stretches in described housing and top is near described retort, is used for
Sense the temperature of described retort and the temperature of sensing sent to control unit, described control unit root
The operation of described heating module is controlled according to the sensing temperature received.
10. ammonia pyrolysis furnace as claimed in claim 1, it is characterised in that fill out in described retort
It is filled with catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610334220.7A CN106006577A (en) | 2016-05-19 | 2016-05-19 | Ammonia cracker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610334220.7A CN106006577A (en) | 2016-05-19 | 2016-05-19 | Ammonia cracker |
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| CN106006577A true CN106006577A (en) | 2016-10-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118068870A (en) * | 2024-04-15 | 2024-05-24 | 东北大学 | Flow valve system for gas cracking source and flow regulating method |
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| CN2200631Y (en) * | 1994-06-25 | 1995-06-14 | 吴县保护气体设备厂 | Reaction furnace body on ammonia decomposition gas generating device |
| CN201165469Y (en) * | 2008-01-25 | 2008-12-17 | 张文波 | Ammonia decomposition furnace bladder |
| CN202358911U (en) * | 2011-09-08 | 2012-08-01 | 嘉善通利达工业炉有限公司 | Methanol cracking furnace |
| CN202261858U (en) * | 2011-10-17 | 2012-05-30 | 山东高唐杰盛半导体科技有限公司 | Integrated heating plate |
| CN205676154U (en) * | 2016-05-19 | 2016-11-09 | 上海汇森益发工业炉有限公司 | Ammonia pyrolysis furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118068870A (en) * | 2024-04-15 | 2024-05-24 | 东北大学 | Flow valve system for gas cracking source and flow regulating method |
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Application publication date: 20161012 |