CN205948844U - A reaction unit that is used for isothermal transformationreation and methanation to react - Google Patents
A reaction unit that is used for isothermal transformationreation and methanation to react Download PDFInfo
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- CN205948844U CN205948844U CN201620831496.1U CN201620831496U CN205948844U CN 205948844 U CN205948844 U CN 205948844U CN 201620831496 U CN201620831496 U CN 201620831496U CN 205948844 U CN205948844 U CN 205948844U
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- reaction
- tube
- cylinder
- methanation
- temperature shift
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Abstract
The utility model relates to a reaction unit that is used for isothermal transformationreation and methanation to react, the device include the casing and set up the tube bank system in the casing, the casing include the barrel, set up at the low head of barrel bottom and lay air inlet, gas outlet and the catalyst self -discharging mouth on the low head, the tube bank system include that outside -in lays branch inflator, heat exchange pipe assembly and gas cylinder in the barrel, the setting reposition of redundant personnel water tank set spare at minute inflator top in proper order, gas cylinder and gas outlet be linked together. Compared with the prior art, the utility model has the advantages of simple and compact structure, economical and practical can effectively save the production investment, reduces the manufacturing cost and the reliability of improving production, can satisfy actual chemical production operation demand.
Description
Technical field
This utility model belongs to technical field of chemical, be related to a kind of for waiting temperature shift reaction and methanation reaction
Reaction unit.
Background technology
At present, in domestic many chemical industry of chemical fertilizer industries, transformationreation application is extremely wide.Isothermal conversion and methanation process
Advanced technology, energy-saving effect is good, but isothermal converter technique the commercial Application time is shorter at home, isothermal change furnace and methanation
The structure of reacting furnace has some problems, and such as water-cooled tube bank easy drawing crack under the temperature difference leads to leak, and the structure of equipment is not
Can safely and effectively concisely overhaul.Therefore, need when equipment manufactures and designs to take into full account reduction tube bank thermal (temperature difference) stress, examine simultaneously
Consider user and can open big lid in maintenance, welding position is convenient, and detection is feasible, safe and reliable.
Now, domestic isothermal change furnace and methanation reaction furnace structure substantially adopt annular tube type structure or tube-sheet type knot
Structure.However, annular tube type structure tube bank thermal (temperature difference) stress to reduce thermal (temperature difference) stress mainly by heat exchanger tube sweep, but there is thermal compensation
Measure the little weld seam drawing crack being easily caused heat exchanger tube and endless tube, the extremely difficult welding quality in welding position is difficult to control to and repair welding have blind
The defect in area, once heat exchanger tube weld seam or heat exchanger tube cracking cannot overhaul；Tube-sheet type structure thermal (temperature difference) stress is mainly by tube bank upper end
Expansion joint or stuffing box are offsetting thermal (temperature difference) stress, but have that the very thick temperature difference thermal stress of tube sheet is big, and the weld seam of exchanger tubes and tubesheets makes
With during easily drawing crack occurs, and there are a lot of cracking things when expansion joint and stuffing box use in methanol production system
Therefore, during maintenance, flat cover opens inconvenience, is entered by manhole and carries out repair welding inside container, during repair welding, working place is excessively narrow and small unfavorable
The defect of maintenance.
Utility model content
The purpose of this utility model be exactly provide to overcome the defect that above-mentioned prior art exists a kind of structure simple,
Compact, economical and practical, can effectively save investment of production, reduce manufacturing cost and improve production reliability, disclosure satisfy that actualization
The novel reaction device for waiting temperature shift reaction and methanation reaction of work production operation demand.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of reaction unit for waiting temperature shift reaction and methanation reaction, this device includes housing and is arranged on shell
Tube bundle system in body, described housing includes cylinder, the low head being arranged on cylinder body bottom and is laid on low head
Air inlet, gas outlet and catalyst self-unloading mouth, described tube bundle system includes ecto-entad and is laid in point gas in cylinder successively
Cylinder, heat exchange tube assemblies and gas collecting jar with ground-on cover plate, it is arranged on distributing water tank assembly, described gas collecting jar with ground-on cover plate and the gas outlet phase at atmolysis cylinder top
Connection.
Described distributing water tank assembly include the tube sheet being arranged on atmolysis cylinder top, the shunt cylinder being arranged on tube sheet and
It is fixed on the sealing flange flat cover at shunt cylinder top.
Water inlet, thermocouple connector, Catalyst packing mouth and steam are offered on described sealing flange flat cover go out
Mouthful.
Described sealing flange flat cover is that no pad welds lip seal flange flat cover.
Described tube sheet is provided with the thin tubesheet of reinforcement for upper surface.
Compared to the DN3800 tube plate thickness (about 400～500mm) of ordinary construction, the thickness of described thin tubesheet is 150
～180mm.
Described heat exchange tube assemblies include multiple bayonet tubes being uniformly laid in shunt cylinder and multiple points in concentric circular
Other and bayonet tube corresponds the trocar sheath of setting.
Described trocar sheath is uniformly laid between atmolysis cylinder and gas collecting jar with ground-on cover plate in concentric circular.
The top of described trocar sheath is passed through tube sheet and is connected with corresponding bayonet tube, and described trocar sheath top
Leave gap with corresponding bayonet bottom of the tube, described bayonet tube be heated after retractable.
The bottom of described trocar sheath is provided with protecting pipe, and this protecting pipe is fixedly connected with low head, and described overcoat
In pipe insertion protecting pipe, freely stretch in protecting pipe after being heated.
In actual design, bayonet tube is nested within trocar sheath, and centre is provided with locating pin to control gap between two pipes
Uniformly, bayonet bottom of the tube and trocar sheath top are separated with a certain distance, and water enters from bayonet tube, after coming downwards to bottom, absorb heat
Measure annular space between bayonet tube and trocar sheath for the mixture being converted into steam and water up, and go out from moisture outlet, overcoat
Ttom of pipe end is blind dead.The distance between bayonet bottom of the tube and trocar sheath top can ensure that bayonet tube freely stretches after being heated, trocar sheath
Bottom is provided with protecting pipe, and trocar sheath inserts protecting pipe but is not fixedly connected, and protecting pipe is fixedly connected with low head, and trocar sheath is heated
Freely stretch in protecting pipe afterwards.
Multiple passages are equidistantly offered vertically on the barrel of described atmolysis cylinder.
In this utility model device, gas enters low head by air inlet, up through the annular space footpath of cylinder and atmolysis cylinder
The beds being seated between atmolysis cylinder and gas collecting jar with ground-on cover plate to entrance are reacted, and pass through gas collecting jar with ground-on cover plate down through giving vent to anger after reaction
Mouth is discharged；Cooling water enters distributing water tank assembly from water inlet, and is downwardly into bayonet tube, to after bottom, from bayonet tube and
The annular space of sleeve pipe is walked upwards, and absorbing reaction heat, forms gas-vapor mix and enters distributing water tank assembly, and from moisture outlet row
Go out, in distributing water tank assembly, between water inlet cold water and water outlet steam, be separated with shunt cylinder.
This utility model make use of trocar sheath, the characteristic of bayonet tube retractable and distributing water tank assembly to be provided with shunting
The band muscle thin tubesheet structure of cylinder, makes this device tube sheet counteract height under operation operating mode more than 100 DEG C for the catalyst layer temperature difference
Thermal stress, decreases the phenomenon of tube-tube plate weld cracking, increased the actual life of device, is thinned tube sheet thick simultaneously
Degree, reduces installation cost, beneficial to larger-scale unit development；Using no pad weldering lip seal method at distributing water tank assembly flat cover
Blue flat cover, is usable under high-temperature condition, and sealing is safe and reliable and easily disassembled, greatly reduces inspection operation difficulty.
Compared with prior art, this utility model has the characteristics that：
1) long service life：Heat exchanger tube is provided with trocar sheath and bayonet tube, heat exchanger tube be heated after retractable, carry muscle light wall pipe
Plate temperature difference reduces, and substantially improves the tube-tube plate weld seam drawing crack phenomenon causing because of temperature difference thermal stress, improves device
Service life；
2) safe and reliable：It has been designed with no pad weldering lip seal flange in distributing water tank assembly, be usable in high tender feeling
Under condition, and can guarantee that in water tank, vapour pressure temperature changes sealing safety within the specific limits, improve safety in utilization and can
By property；
3) range is wide：It is provided with shunt cylinder, band muscle thin tubesheet structure tube sheet temperature difference reduces in distributing water tank assembly
Avoid thick tube sheet high thermal stress, especially suitable to high temperature special occasions, and thin tubesheet is beneficial to equipment enlarging development；
4) overhaul conveniently：Using no pad weldering lip seal flange in distributing water tank assembly, detachable during maintenance, examine after dismounting
Repairing welding, inspection extremely convenient, improve ease of use.
Brief description
Fig. 1 is this utility model structural representation；
In figure description of symbols：
1 air inlet, 2 low heads, 3 cylinders, 4 atmolysis cylinders, 5 gass collecting jar with ground-on cover plate, 6 gas outlets, 7 tube sheets, 8
Shunt cylinder, 9 sealing flange flat covers, 10 water inlets, 11 thermocouple connectors, 12 Catalyst packing mouths, 13 steam
Outlet, 14 bayonet tubes, 15 trocar sheaths, 16 catalyst self-unloading mouths.
Specific embodiment
With specific embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in figure 1, a kind of reaction unit for waiting temperature shift reaction and methanation reaction, this device include housing with
And setting tube bundle system in the housing, housing includes cylinder 3, the low head 2 being arranged on cylinder 3 bottom and is laid in lower envelope
Air inlet 1 on 2, gas outlet 6 and catalyst self-unloading mouth 16, tube bundle system includes ecto-entad and is laid in successively in cylinder 3
Atmolysis cylinder 4, heat exchange tube assemblies and gas collecting jar with ground-on cover plate 5, be arranged on the distributing water tank assembly at atmolysis cylinder 4 top, gas collecting jar with ground-on cover plate 5 with give vent to anger
Mouth 6 is connected.Multiple passages are equidistantly offered vertically on the barrel of atmolysis cylinder 4.
Wherein, distributing water tank assembly includes the tube sheet 7 being arranged on atmolysis cylinder 4 top, the shunt cylinder 8 being arranged on tube sheet 7
And it is fixed on the sealing flange flat cover 9 at shunt cylinder 8 top, this sealing flange flat cover 9 offers water inlet 10, thermoelectricity coupled
Interface 11, Catalyst packing mouth 12 and moisture outlet 13.In the present embodiment, sealing flange flat cover 9 is that no pad welds lip seal
Flange flat cover.Sealing ring is additionally provided with sealing flange flat cover 9, detachably.Tube sheet 7 is provided with the thin tubesheet of reinforcement for upper surface.
In the present embodiment, the thickness of thin tubesheet is 150mm.
Heat exchange tube assemblies include multiple bayonet tubes 14 being uniformly laid in concentric circular in shunt cylinder 8 and multiple respectively with
Bayonet tube 14 corresponds the trocar sheath 15 of setting.Trocar sheath 15 be uniformly laid in concentric circular atmolysis cylinder 4 and gas collecting jar with ground-on cover plate 5 it
Between.The top of trocar sheath 15 passes through tube sheet 7 being connected with corresponding bayonet tube 14, bayonet tube 14 be nested in trocar sheath 15 it
Interior, centre is provided with locating pin to control gap uniformity between two pipes, and bayonet tube 14 bottom and trocar sheath 15 top are separated with certain
Distance, water enters from bayonet tube 14, after coming downwards to bottom, absorb the mixture that converting heat is steam and water from bayonet tube 14 with
Annular space between trocar sheath 15 is up, and goes out from moisture outlet 13, and trocar sheath 15 bottom is blind dead.Bayonet tube 14 bottom and overcoat
The distance between pipe 15 top can ensure that bayonet tube 14 freely stretches after being heated, and trocar sheath 15 bottom is provided with protecting pipe, trocar sheath
15 insertion protecting pipes but be not fixedly connected, protecting pipe is fixedly connected with low head 2, trocar sheath 15 be heated after in protecting pipe freedom
Flexible.
In the present embodiment device, gas enters low head 2 by air inlet 1, up through the annular space of cylinder 3 and atmolysis cylinder 4
Reacted radially into the beds being seated between atmolysis cylinder 4 and gas collecting jar with ground-on cover plate 5, passed through gas collecting jar with ground-on cover plate 5 after reaction downward
Discharge through gas outlet 6；Cooling water enters distributing water tank assembly from water inlet 10, and is downwardly into bayonet tube 14, to after bottom, from
The annular space of bayonet tube 14 and trocar sheath 15 is walked upwards, and absorbing reaction heat, forms gas-vapor mix and enters distributing water tank assembly,
And discharge from moisture outlet 13, it is separated with shunt cylinder 8 between water inlet cold water and water outlet steam in distributing water tank assembly.
When actually used, from Catalyst packing mouth 12, before the present embodiment plant running, import catalyst, catalyst is equal
Even be enclosed between atmolysis cylinder 4 and gas collecting jar with ground-on cover plate 5, gas radially uniform enter beds occur exothermic reaction, trocar sheath 15
It is evenly distributed on catalyst layer in concentric circular, cooling water uniformly siphons away heat by trocar sheath 15, balanced and real with keeping reacting
Now rational operation temperature curve, generally, transformationreation requires the catalyst layer temperature difference more than 100 DEG C, the present embodiment
Device is provided with thermocouple interface 11, and thermocouple is inserted by thermocouple interface 11, monitors course of reaction by real-time measurement temperature
And be controlled adjusting.
The present embodiment device make use of trocar sheath 15, the characteristic of bayonet tube 14 retractable and distributing water tank assembly to set
There is the band muscle thin tubesheet structure of shunt cylinder 8, so that tube sheet 7 is counteracted under operation operating mode more than 100 DEG C for the catalyst layer temperature difference
High thermal stress, decreases the phenomenon of tube-tube plate 7 weld cracking, increased the actual life of device, is thinned pipe simultaneously
Plate 7 thickness, reduces installation cost, beneficial to equipment enlarging development；Using no pad weldering lip at distributing water tank assembly flat cover
Sealing flange flat cover, is usable under high-temperature condition, and sealing is safe and reliable and easily disassembled, greatly reduces inspection operation difficult
Degree.
Embodiment 2：
In the present embodiment, the thickness of thin tubesheet is 160mm, and remaining is with embodiment 1.
Embodiment 3：
In the present embodiment, the thickness of thin tubesheet is 180mm, and remaining is with embodiment 1.
The above-mentioned description to embodiment is to be understood that and use practicality for ease of those skilled in the art
New.Person skilled in the art obviously easily can make various modifications to these embodiments, and here is illustrated
General Principle be applied in other embodiment without through performing creative labour.Therefore, this utility model be not limited to above-mentioned
Embodiment, those skilled in the art according to announcement of the present utility model, the improvement made without departing from this utility model category and
Modification all should be within protection domain of the present utility model.
Claims (10)
1. a kind of reaction unit for waiting temperature shift reaction and methanation reaction, this device includes housing and is arranged on housing
In tube bundle system it is characterised in that described housing include cylinder (3), be arranged on the low head (2) of cylinder (3) bottom with
And it is laid in air inlet (1) on low head (2), gas outlet (6) and catalyst self-unloading mouth (16), described tube bundle system includes
Atmolysis cylinder (4) that ecto-entad is laid in cylinder (3) successively, heat exchange tube assemblies and gas collecting jar with ground-on cover plate (5), it is arranged on atmolysis cylinder
(4) the distributing water tank assembly at top, described gas collecting jar with ground-on cover plate (5) is connected with gas outlet (6).
2. a kind of reaction unit for waiting temperature shift reaction and methanation reaction according to claim 1, its feature exists
In described distributing water tank assembly includes being arranged on the tube sheet (7) at atmolysis cylinder (4) top, the shunt cylinder being arranged on tube sheet (7)
And be fixed on the sealing flange flat cover (9) at shunt cylinder (8) top (8).
3. a kind of reaction unit for waiting temperature shift reaction and methanation reaction according to claim 2, its feature exists
In water inlet (10), thermocouple connector (11), Catalyst packing mouth (12) are offered on described sealing flange flat cover (9)
And moisture outlet (13).
4. a kind of reaction unit for waiting temperature shift reaction and methanation reaction according to claim 3, its feature exists
In described sealing flange flat cover (9) is that no pad welds lip seal flange flat cover.
5. a kind of reaction unit for waiting temperature shift reaction and methanation reaction according to claim 2, its feature exists
In described tube sheet (7) is provided with the thin tubesheet of reinforcement for upper surface.
6. a kind of reaction unit for waiting temperature shift reaction and methanation reaction according to any one of claim 2 to 5,
It is characterized in that, described heat exchange tube assemblies include multiple bayonet tubes (14) being uniformly laid in shunt cylinder (8) in concentric circular
And multiple respectively with bayonet tube (14) correspond setting trocar sheath (15).
7. a kind of reaction unit for waiting temperature shift reaction and methanation reaction according to claim 6, its feature exists
In described trocar sheath (15) is uniformly laid between atmolysis cylinder (4) and gas collecting jar with ground-on cover plate (5) in concentric circular.
8. a kind of reaction unit for waiting temperature shift reaction and methanation reaction according to claim 7, its feature exists
In the top of described trocar sheath (15) is passed through tube sheet (7) and is connected with corresponding bayonet tube (14), and described overcoat
Pipe (15) top leave gap with corresponding bayonet tube (14) bottom, described bayonet tube (14) be heated after retractable.
9. a kind of reaction unit for waiting temperature shift reaction and methanation reaction according to claim 8, its feature exists
In the bottom of described trocar sheath (15) is provided with protecting pipe, and this protecting pipe is fixedly connected with low head (2), and described outer
In sleeve pipe (15) insertion protecting pipe, freely stretch in protecting pipe after being heated.
10. a kind of reaction unit for waiting temperature shift reaction and methanation reaction according to claim 6, its feature exists
In equidistantly offering multiple passages vertically on the described barrel of atmolysis cylinder (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620831496.1U CN205948844U (en) | 2016-08-03 | 2016-08-03 | A reaction unit that is used for isothermal transformationreation and methanation to react |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620831496.1U CN205948844U (en) | 2016-08-03 | 2016-08-03 | A reaction unit that is used for isothermal transformationreation and methanation to react |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205948844U true CN205948844U (en) | 2017-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620831496.1U Expired - Fee Related CN205948844U (en) | 2016-08-03 | 2016-08-03 | A reaction unit that is used for isothermal transformationreation and methanation to react |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205948844U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167382A (en) * | 2020-01-13 | 2020-05-19 | 清华大学 | Gas heat exchange type reactor and sulfuric acid catalytic decomposition method |
| CN112337410A (en) * | 2020-10-23 | 2021-02-09 | 四川天采科技有限责任公司 | Conversion reactor for methanol hydrogen production and integrated methanol hydrogen production system |
-
2016
- 2016-08-03 CN CN201620831496.1U patent/CN205948844U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167382A (en) * | 2020-01-13 | 2020-05-19 | 清华大学 | Gas heat exchange type reactor and sulfuric acid catalytic decomposition method |
| CN112337410A (en) * | 2020-10-23 | 2021-02-09 | 四川天采科技有限责任公司 | Conversion reactor for methanol hydrogen production and integrated methanol hydrogen production system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20170803 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |