CN206587722U - It is a kind of to be used for natural gas steam reforming high temperature lining reactor - Google Patents
It is a kind of to be used for natural gas steam reforming high temperature lining reactor Download PDFInfo
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- CN206587722U CN206587722U CN201720198726.XU CN201720198726U CN206587722U CN 206587722 U CN206587722 U CN 206587722U CN 201720198726 U CN201720198726 U CN 201720198726U CN 206587722 U CN206587722 U CN 206587722U
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Abstract
The utility model provides a kind of for natural gas steam reforming high temperature lining reactor：The refractory liner being made including pressure hull and the use self-flow pattern castable being arranged on pressure hull inwall, internal jacket is provided with the refractory liner, the straight barrel that internal jacket is constituted including the straight tube liner plate circumferentially arranged by multilayer, the circumferentially overlapping plate for being connected to the axial lapping plate in every layer of straight tube liner plate between adjacent straight tube liner plate and being connected between adjacent layer straight tube liner plate, the axial lapping plate and circumferentially overlapping plate have the V-groove extended along correspondence direction.The utility model uses self-flow pattern castable, can one-shot forming refractory liner, the influence constructed to refractory liner quality is minimized, simultaneously, the internal jacket of self absorbing thermal expansion of energy is constituted using V-type lapping plate, efficiently avoid the possibility that process gas and steam are contacted with lining, so as to ensure that equipment safety is reliably run, with it is simple in construction, with low cost the characteristics of.
Description
Technical field
The utility model is related to natural gas steam reforming hydrogen manufacturing/synthesis gas field, and in particular to a kind of liner reactor.
Background technology
Current domestic natural gas producing hydrogen from steam conversion or synthesis gas process, mostly using steam-reforming techniques, i.e., in catalysis
Under the hot conditions that agent is present (in reburner), the hydro carbons such as methane are made to generate H with steam reaction2, the gaseous mixture such as CO.Its is main
React and be：
1、
2、
3、
4、
With the continuous improvement of hydrogen manufacturing/synthesis gas scale, separate unit reburner meets extensive work with being difficult to economic and reliable
Skill production requirement.Most domestic conversion process employs the technique that pre reformer is set before reburner.Pre reformer makes
With the sub-load (about 15~20%) for not only having shared reburner, reburner scale is reduced；Heavy hydrocarbon component is in prerotation simultaneously
Change beds and be decomposed into light component through the endothermic reaction, it is to avoid heavy hydrocarbon is anti-because of higher bed temperature environment in reburner
Should, cause catalyst carbon deposition, substantially prolongs the service life of reforming catalyst, extend the reburner cycle of operation.
The reaction gas of pre reformer or reburner the excessive steam of supplement is both needed to before its respective preheater is entered so that
Methane steam reforming reaction is complete and suppresses carbon distribution reaction.The addition of excess steam causes water vapour porcelain ball table in pre reformer
Face condenses, and especially need to add condensation vapor phenomenon at substantial amounts of water vapour, pre reformer top porcelain ball in start-up more dashes forward
Go out.The intrusion of steam considerably increases container internal catalyst bed layer to the thermal conductivity factor of container casing metal inner surface.
Typical pre reformer operating condition：550 DEG C of 2.8MPa@(are designed as：3.5MPa@300 (wall temperature) DEG C, lining is set
It is 150 DEG C to count adiabatic temperature), reaction gas enters from top, bottom discharge.Because temperature is higher, current refractory material uses one
The structure of layer fire resisting corundum castable and one layer light aluminium castable, there is one layer between heat-insulation layer castable and container casing metal inner surface
Resistance to 400 DEG C of acid resisting black varnish is to prevent dew point corrosion, and container casing is because there is refractory material to reduce metal outer wall design work
Make temperature (300 DEG C), selection is Q345R.
Go out the conversion temperature degree of reburner about at 800~850 DEG C, under normal operating conditions, superheated vapour is with technique
Gas is separated after entering downstream recuperation of heat cooling.The design for converting outlet of still gas transmission main is similar with pre reformer, operating condition：
2.2MPa 890/150 (pipe wall temperature) DEG C (is designed as：2.4MPa 910/300 (pipe wall temperature) DEG C), it is firm using one layer of fire resisting
Beautiful castable and one layer light aluminium castable structure (cecum using one layer of corundum brick, one layer of fine blanket of pottery and light two layers aluminium brick and
The fine blanket of pottery), pipe is rolled using Q345R sheet materials and formed.
Crackle of the condensate separated out during driving along pre reformer castable surface is penetrated at hard pitch paint, about
550 DEG C of steam gradually melts hard pitch paint entrainment of process gas and at the relatively low gas outlet of slave unit base pressure
Outflow, forms the runner of High Temperature Gas-steam flow body.So as to just cause container casing outside wall temperature far above design load (design 150
DEG C, 380 DEG C are up in running), there is larger potential safety hazard in equipment operation.
In the driving and parking stage, as system gradually heats up and cooled, the temperature of conversion gas changes therewith, when conversion temperature degree
During less than water vapour dew-point temperature, substantial amounts of steam is separated out at gas transmission main cecum manhole, and the gas of moisture vapor is through just
The gap of beautiful brick, light aluminium brick and corundum castable is condensed at the fine blanket of pottery, causes fine blanket water suction deformation of making pottery, and under the conditions of deadweight
Tenesmus causes gas to alter to Q345R metal inner surfaces, causes cecum external wall of upper portion overtemperature (being up to 310 DEG C), there is larger peace
Full hidden danger.
The content of the invention
To solve the problems of above-mentioned prior art, the purpose of this utility model is to provide a kind of for natural gas
The high temperature lining reactor of steam conversion, will with the gas conveying that simple and practical structure design meets high temperature and rich water vapour simultaneously
Ask.
To reach above-mentioned purpose, the utility model employs following technical scheme：
The refractory liner being made including pressure hull and the use self-flow pattern castable being arranged on pressure hull inwall,
Be provided with internal jacket in the refractory liner, straight tube liner plate that internal jacket includes circumferentially being arranged by multilayer, be connected to every layer it is straight
Axial lapping plate in cylinder liner plate between adjacent straight tube liner plate and the circumferentially overlapping plate being connected between adjacent layer straight tube liner plate are constituted
Straight barrel, the straight barrel and be arranged on pressure hull at respective openings process gas air inlet, thermometer boss, charging
Mouth, discharge port, process gas gas outlet and manhole are connected, and the axial lapping plate and circumferentially overlapping plate have along counterparty
To the V-groove of extension.
The internal jacket also includes the oblique liner plate for being arranged at the straight barrel end.
The upper and lower end of pressure hull uses ellipse head structure, and the internal jacket is by straight barrel and is arranged at
Upper oblique liner plate, the oblique liner plate of straight barrel upper/lower terminal are constituted.
The process gas air inlet, thermometer boss, charging aperture, discharge port, process gas gas outlet and manhole and inner clip
Set is connected as one, and is separated between pressure hull by the refractory liner.
The internal jacket, axial lapping plate and circumferentially overlapping plate are made of stainless steel.
Insulation material layer is filled between the internal jacket and refractory liner.
The heat-insulating material is selected from ceramic fiber blanket.
The manhole, which is located in pneumatic shell body sidewall, manhole, is provided with people's stopple；People's stopple includes stainless steel cylinder, is arranged on
The fibrous paper of stainless steel cylinder outer wall and the ceramic fiber blanket being filled in stainless steel cylinder.
The discharge port, which is located in pressure hull lower end, discharge port, is provided with the cylindrical plugs being made up of self-flow pattern castable
The gap of son, the plug and discharge port is blocked by the ceramic fiber blanket being arranged on plug outer wall.
The beneficial effects of the utility model are embodied in：
Compared with prior art, the refractory liner that the utility model is constituted using self-flow pattern castable, using its once into
Type feature minimizes the influence constructed to refractory liner quality, meanwhile, utilize V-type lapping plate, the i.e. overlap joint with V-groove
Plate it is creative propose can self absorbing thermal expansion internal jacket, efficiently avoid that process gas and steam contacts with lining can
Can, so as to ensure that the fortune that equipment can be safe and reliable under design objective on the premise of device fabrication cost is not significantly increased
OK, with it is simple in construction, with low cost the characteristics of.
Brief description of the drawings
Fig. 1 is the structural representation of reactor；
Fig. 2 is internal jacket structure diagram；
Fig. 3 is axial lapping plate assembling schematic diagram；
Fig. 4 is ring lapping plate assembling schematic diagram；
Fig. 5 is internal jacket direct tube section structural representation；
In figure：1. pressure hull, 2. refractory liners, 3. straight tube liner plates, 4. oblique liner plates, tiltedly liner plate, the fine blankets of 6. potteries on 5.
Interlayer, 7. discharge ports, 8. charging apertures, 9. thermometer bosses, 10. process gas air inlets, 11. axial lapping plates, 12. is circumferentially overlapping
Plate, 13. process gas gas outlets.
Embodiment
Further explanation lower in detail is done to the utility model below in conjunction with drawings and examples.
Referring to Fig. 1, the utility model provides a kind of natural gas steam reforming hydrogen manufacturing/synthesis gas liner reactor, including
In reactor pressure hull 1, the refractory liner 2 being made up of castable, the fine blanket interlayer 6 of pottery and metal that are made up of ceramic fiber blanket
Chuck (internal jacket includes straight tube liner plate 3, oblique liner plate 4 and upper oblique liner plate 5 etc.).
The reactor pressure hull 1 is 3800 × 8600 × 60mm of Ф pressure vessel, and upper and lower end socket is ellipse
(upper cover sets process gas air inlet 10, charging aperture 8 and thermometer boss 9 to end socket, and low head is provided with discharge port 7, technique
Gas gas outlet 13).Cylinder uses 16MnIII forging using Q345R sheet materials, adapter.Anchor studs material is S30408, and anchor studs exist
It is welded to before container heat treatment on the inwall of pressure hull 1.The structure design of the reactor pressure hull 1 and normal tape liner
Pressure vessel is consistent.
The refractory liner 2 is molded by self-flow corundum castable (low iron, low silicon) one-time-concreting, high, resistance to intensity
The characteristics of washing away.Meanwhile, self-flow pattern castable can farthest reduce influence of the construction to refractory liner quality.Original equipment is poured
Build form and form is poured using vibration, gravity flow pouring material has the advantage that compared with vibrating casting material：1st, can be under Gravitative Loads
Flowing is without vibration；2nd, automatic drawout and the position that vibrating casting material is unable to reach can be can reach；3rd, pumpable construction, drop
Low labor intensity, accelerates construction period；4th, construction noise pollution is reduced.
Referring to Fig. 2, the internal jacket is made up of straight tube liner plate 3, oblique liner plate 4 and upper oblique liner plate 5 etc..At upper and lower end socket
Oblique liner plate and 125 degree of straight tube liner plate angle (Fig. 1), so reduce the manufacture difficulty of internal jacket, reduce the manufacturing cycle.Straight tube
The processing method of liner plate 3 is：Rolled by wide 1500mm, thickness 3mm 304 stainless steel plates as stainless steel cylinder, then be cut to 60 ° of radian,
Long 1500mm and width 500mm stainless steel plate.60 ° of angle is used between stainless steel plate, the long 1500mm of groove, width 60mm V-arrangement are taken
Fishplate bar overlaps to absorb axial direction and circumferential expansion.
Between the internal jacket and refractory liner 2 provided with the fine blanket interlayer 6 of pottery thick one layer of 30mm (being 27mm after compression) with
Increase the density between internal jacket and refractory liner 2, while avoiding touching between internal jacket and refractory liner 2 in transportation
Hit.
Castable is designed to the cylindrical hole with footpath with flange internal diameter at the reactor bottom catalyst discharge port 7,
Prefabricated one have 5mm gaps with the cylindrical hole cylindrical castable plug, in plug outer wall bag after the completion of catalyst discharging
Wrap up in the thick ceramic fiber blankets of one layer of 10mm and fill in discharge port 7, prevent overtemperature at the discharge port in the process of running.
Sidewall of reactor is provided with manhole, and castable pours the hole for building up 15 ° of tapers of band at the manhole, and make one has therewith
Ceramic fiber blanket is filled up in stainless steel cylinder people's stopple in 2mm gaps, cylinder to increase the effect of heat insulation of people's stopple, drum outer wall parcel
Fibrous paper thick one layer of 3mm reduces air-flow and enters the gap and cause people hole site super to reduce gap between people's stopple and manhole
Temperature.
The inside lining sleeve of the charging aperture 8 of reactor head thermometer boss 9/ has 3mm gaps with upper oblique liner plate 5 respectively, uses
Ceramic fiber paper plug thick 3mm is real.
The indoor design of reactor process gas air inlet 10 has the cylindrical guide shell of a 304H, in guide shell close to top
The square opening that portion opens position 6 50 × 50mm is used as sprue gate, and material feeding to be poured is poured, baker is welded after terminating with 304H steel plates
It is stifled.
In the present embodiment, using cleverly inner clip Analysis of Nested Design (internal jacket of self absorbing thermal expansion), it is effectively isolated
Contact of the process gas of rich, high temperature steam with refractory liner, it is to avoid container outer wall surpasses because of steam heat conduction and caused by washing away
Temperature.The preparation technology of above-mentioned liner reactor comprises the following steps：
1) pressure vessel manufacturing is consistent with usual pressure container, and radiographic inspection, Re Chu are carried out after anchor studs welding is completed
Reason and hydraulic pressure/gas pressure test.
2) it can start to pour into a mould refractory liner after canister manufacture completion and by examination.Canister is in vertical shape
Constructed under state, scaffold is set up in it, and (discharge port 7, thermometer boss 9, charging aperture 8, manhole shift to an earlier date prefabricated connect to branch mould
Mouth mold has and in die surface parcel 1mm ceramic fiber papers), it is square that 6 layers of 100 × 100mm in ring uniformly is opened from bottom to up
Hole is used as sprue gate, and sprue gate should avoid manhole.
3) pour into a mould self-flow pattern castable successively from bottom to up, block square opening after often having poured one layer.Casting complete is simultaneously
Maintenance terminates rear form removal and scaffold, and lining drying is carried out by castable shop instruction.Drying is said after terminating by producer
Bright book and lining construction acceptance criteria is carried out an acceptance inspection, and follow-up work is carried out after acceptance(check).
4) ceramic fiber blanket of a thickness 30mm is pasted with high-temperature seal adhesive on castable surface.
5) stainless steel internal jacket is constructed, and step is as follows：
A, first by oblique liner plate burst by process gas air inlet opening send into container in, and bottom group weldering；
B, straight tube liner plate is put into container to progress ring assembling, and welded with axial direction lapping plate 11, Type of Welding referring to
Fig. 3, Fig. 5；
C, upper strata straight tube liner plate are welded with next layer of straight tube liner plate with ring lapping plate (i.e. circumferentially overlapping plate 12), referring to figure
4；
D, continuation welding, are completed until upper oblique liner plate 5 is welded with process gas air inlet.
6) after the completion of internal jacket welding, with ceramic fiber paper by the seam at head temperature meter interface/charging aperture and internal jacket
Gap plug is real.
7) equipment is transported to after the completion of in-site installation, the castable plug wrapped before Catalyst packing with ceramic fiber blanket
Filled in inside slave unit in discharge port.Treat that after the completion of discharge port encapsulation the filling work of catalyst can be started.
8) catalyst and the filling of porcelain ball terminate and after acceptance(check), wrap people's stopple with ceramic fiber paper and fill in people
Hole, and manhole cover is recovered.
Advantage of the present utility model is as follows：
(1) the utility model mainly uses stainless steel internal jacket, it is to avoid the process gas and refractory liner of rich, high temperature steam
Contact, improve the operational reliability of equipment.
(2) internal jacket and lapping plate that the utility model is used all are that common stainless steel making is standby, simple in construction, processing week
Phase is short, newly-increased investment is few, with low cost.
(3) the utility model using V-type overlap joint by the way of, solve internal jacket it is hot under the conditions of expansion issues, simply
Effectively.
Claims (9)
1. a kind of be used for natural gas steam reforming high temperature lining reactor, it is characterised in that：Including pressure hull (1) and set
Put in the refractory liner (2) that the use self-flow pattern castable on pressure hull (1) inwall is made, the refractory liner (2) and set
It is equipped with internal jacket, straight tube liner plate (3) that internal jacket includes circumferentially being arranged by multilayer, is connected to every layer of interior phase of straight tube liner plate (3)
Axial lapping plate (11) between adjacent straight tube liner plate (3) and the circumferentially overlapping plate (12) being connected between adjacent layer straight tube liner plate (3)
The straight barrel of composition, the straight barrel and the process gas air inlet (10) being arranged on pressure hull (1) at respective openings, temperature
Meter interface (9), charging aperture (8), discharge port (7), process gas gas outlet (13) and manhole are connected, the axial lapping plate
And circumferentially overlapping plate (12) has the V-groove that extends along correspondence direction (11).
2. a kind of according to claim 1 be used for natural gas steam reforming high temperature lining reactor, it is characterised in that：It is described
Internal jacket also includes the oblique liner plate for being arranged at the straight barrel end.
3. a kind of according to claim 1 be used for natural gas steam reforming high temperature lining reactor, it is characterised in that：It is described
Pressure hull (1) upper and lower end use ellipse head structure, the internal jacket by straight barrel and be arranged on straight barrel,
The upper oblique liner plate (5) at lower two ends, oblique liner plate (4) are constituted.
4. a kind of according to claim 1 be used for natural gas steam reforming high temperature lining reactor, it is characterised in that：It is described
Process gas air inlet (10), thermometer boss (9), charging aperture (8), discharge port (7), process gas gas outlet (13) and manhole with
Internal jacket is connected as one, and is separated between pressure hull (1) by the refractory liner (2).
5. a kind of according to claim 1 be used for natural gas steam reforming high temperature lining reactor, it is characterised in that：It is described
Internal jacket, axial lapping plate (11) and circumferentially overlapping plate (12) are made of stainless steel.
6. a kind of according to claim 1 be used for natural gas steam reforming high temperature lining reactor, it is characterised in that：It is described
Insulation material layer is filled between internal jacket and refractory liner (2).
7. a kind of according to claim 6 be used for natural gas steam reforming high temperature lining reactor, it is characterised in that：It is described
Heat-insulating material is selected from ceramic fiber blanket.
8. a kind of according to claim 1 be used for natural gas steam reforming high temperature lining reactor, it is characterised in that：It is described
Manhole, which is located in pressure hull (1) side wall, manhole, is provided with people's stopple；People's stopple includes stainless steel cylinder, is arranged on stainless steel cylinder
The fibrous paper of outer wall and the ceramic fiber blanket being filled in stainless steel cylinder.
9. a kind of according to claim 1 be used for natural gas steam reforming high temperature lining reactor, it is characterised in that：It is described
Discharge port (7), which is located in pressure hull (1) lower end, discharge port (7), is provided with the cylindrical plug being made up of self-flow pattern castable,
The gap of the plug and discharge port (7) is blocked by the ceramic fiber blanket being arranged on plug outer wall.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720198726.XU CN206587722U (en) | 2017-03-02 | 2017-03-02 | It is a kind of to be used for natural gas steam reforming high temperature lining reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720198726.XU CN206587722U (en) | 2017-03-02 | 2017-03-02 | It is a kind of to be used for natural gas steam reforming high temperature lining reactor |
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| Publication Number | Publication Date |
|---|---|
| CN206587722U true CN206587722U (en) | 2017-10-27 |
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| CN201720198726.XU Active CN206587722U (en) | 2017-03-02 | 2017-03-02 | It is a kind of to be used for natural gas steam reforming high temperature lining reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108531199A (en) * | 2018-03-27 | 2018-09-14 | 五冶集团上海有限公司 | A kind of lining plate structure of coke tank straight tube root and burnt tank lower cone coke discharging mouth |
| CN116292887A (en) * | 2023-05-25 | 2023-06-23 | 山西阳煤化工机械（集团）有限公司 | Pressure vessel and discharge opening |
-
2017
- 2017-03-02 CN CN201720198726.XU patent/CN206587722U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108531199A (en) * | 2018-03-27 | 2018-09-14 | 五冶集团上海有限公司 | A kind of lining plate structure of coke tank straight tube root and burnt tank lower cone coke discharging mouth |
| CN108531199B (en) * | 2018-03-27 | 2020-09-11 | 五冶集团上海有限公司 | Lining plate structure for coke discharge port of coke pot straight cylinder root and coke pot lower cone |
| CN116292887A (en) * | 2023-05-25 | 2023-06-23 | 山西阳煤化工机械（集团）有限公司 | Pressure vessel and discharge opening |
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