CN109663545A - A kind of big flux heat exchange fixed bed reactors of winding tubular type - Google Patents
A kind of big flux heat exchange fixed bed reactors of winding tubular type Download PDFInfo
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- CN109663545A CN109663545A CN201811585388.0A CN201811585388A CN109663545A CN 109663545 A CN109663545 A CN 109663545A CN 201811585388 A CN201811585388 A CN 201811585388A CN 109663545 A CN109663545 A CN 109663545A
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
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Abstract
A kind of big flux heat exchange fixed bed reactors of winding tubular type, belong to reaction engineering field.The tube side of this fixed bed reactors uses multithread stock winding type heat exchanger pipe, the air flow method layer for being uniformly distributed support particle and supporting layer and the catalyst distribution layer for being uniformly distributed support particle and catalyst granules are equipped between the first filter element and the second filter element, the catalyst granules volume accounting filled in catalyst distribution layer changes with the reaction temperature in reactor；Reaction speed can be effectively controlled by adjusting the volume accounting of catalyst in catalyst distribution layer in the reactor；It while reaction, is exchanged heat immediately using multithread stock winding type heat exchanger pipe, is conducive to improve the big flux heat exchange of heat exchange compactedness adaptation, and can effectively adjust reaction temperature；Using vessel flange and tube side general pipeline inner flange connection structure, realizes that reactor is detachable, restrains and can extract out, convenient for the periodic maintenance of catalyst change and shell side structure.
Description
Technical field
The present invention relates to a kind of big flux heat exchange fixed bed reactors of winding tubular type, belong to reaction engineering field.
Background technique
Exchange heat fixed bed reactors, its main feature is that being equipped with heat-exchanger rig in catalytic bed, catalytic bed is made to carry out chemistry instead
Heat exchange is carried out with extraneous while answering, the temperature of catalytic bed can in this way controlled closer to optimum temperature range condition
Lower progress, reaction rate is very fast, and catalyst amount is less, and the selectivity of reaction is also higher.However traditional fixed bed reactors
There are problems that poor heat transfer, catalyst are not easy to replace, when exothermic reaction is violent, temperature steeply rise be easy it is out of control.
A kind of current reactor patent " removable finned tube calandria type fixed bed reactor " (Authorization Notice No.:
205612395U) and a kind of " calandria type fixed bed reactor " (application number: 201820090388.2), although having detachable
Function, but be difficult to adapt to different reaction speeds, it is unable to reach the accurate control to reaction temperature.It is more violent for reacting
Process, heat can not shed in time, and temperature steeply rises.
Summary of the invention
In order to overcome the problems, such as it is in the prior art exist, it is anti-that the present invention provides a kind of big flux heat exchange fixed bed of winding tubular type
Answer device.Shell side setting support particle in the reactor, by adjusting the volume accounting (volume of catalyst in catalyst distribution layer
Percentage), reaction speed can be effectively controlled；While reaction, is exchanged heat, be conducive to immediately using multithread stock winding type heat exchanger pipe
It improves heat exchange compactedness and adapts to big flux heat exchange, and can effectively adjust reaction temperature；Utilize vessel flange and tube side general pipeline Nei Fa
Flange connection structure realizes that reactor is detachable, restrains and can extract out, convenient for the periodic maintenance of catalyst change and shell side structure.
The technical solution adopted by the present invention is that: a kind of big flux heat exchange fixed bed reactors of winding tubular type, the shell of reactor
Journey includes the first end socket equipped with shell side inlet and the first manhole, the cylinder equipped with collet and is equipped with shell-side outlet and the second manhole
The second end socket, and be fixedly connected integrally using two groups of connecting flanges, collet is equipped with import and export jacketed piping, in the first envelope
Multiple tube side general pipeline are respectively equipped on head, the second end socket；The tube side of the reactor uses multithread stock winding type heat exchanger pipe, in cylinder
First filter element is set at intracorporal first connecting flange, the second filter element is set at shell-side outlet, in the first filtering
Air flow method layer, catalyst distribution layer and supporting layer are equipped between unit and the second filter element；In air flow method layer and support
Support particle is all placed in layer places mixed uniformly catalyst particles according to reaction temperature situation in catalyst distribution layer
Grain and support particle, the volume accounting of catalyst granules are 100-0.1%；The heat exchanger tube use helical structure, every layer each
There are gap between heat exchanger tube, innermost layer heat exchanger tube is fixed by central tube, is fixed to each other between different layers heat exchanger tube, and between every layer
There are gaps；The end of the heat exchanger tube is connect with tube sheet, and tube sheet is fixedly connected with the flange ring being arranged in tube side general pipeline.
For the heat exchanger tube using the multilayer axially arranged around tubular structure, every layer of heat exchanger tube by more same sizes is parallel
It winds, there are the gaps of 0.1-50 times of pipe outside diameter between each layer between each pipe.
The volume accounting streamwise of catalyst granules is put by reaction medium concentration, heat absorption in the catalyst distribution layer
Thermal characteristics and catalyst tolerable temperature and change in gradient, range is between 0.1%-100%.
When the tube side is multi-way, wherein a journey is preheated or is pre-chilled for reaction medium, a journey is completed for heat-conducting medium
The control and regulation of reaction temperature.
The beneficial effects of the present invention are: this big flux heat exchange fixed bed reactors tube side of winding tubular type is twined using multithread stock
Wound heat exchanger tube, between the first filter element and the second filter element be equipped be uniformly distributed support particle air flow method layer and
Supporting layer and the catalyst distribution layer for being uniformly distributed support particle and catalyst granules, that fills in catalyst distribution layer urges
Catalyst particles volume accounting changes with the reaction temperature in reactor.The reactor can control to be catalyzed in catalyst distribution layer
The volume accounting of agent, and then control reaction speed.Using around tubular structure, enhance heat transfer property.The knot of multithread stock heat exchange simultaneously
When structure is intended to be reacted in reactor, heat can distribute in time, prevent reaction temperature runaway or reaction from stopping the hair of phenomenon
It is raw.Using the flange arrangement in two groups of shell flange structures and tube side general pipeline, realizes that reactor is detachable, urged so as to realize
The replacement of agent and the periodic maintenance of shell side structure.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is a kind of structure chart of big flux heat exchange fixed bed reactors of winding tubular type.
Fig. 2 is the A enlarged drawing in Fig. 1.
In figure: 1, shell side inlet, the 2, first end socket, 2a, the second end socket, 3, tube side general pipeline, 4, flange ring, 5, tube sheet, 6,
Heat exchanger tube, the 7, first manhole, 7a, the second manhole, the 8, first connecting flange, 8a, the second connecting flange, the 9, first filter element,
9a, the second filter element, 10, support particle, 11, jacketed piping, 12, collet, 13, catalyst granules, 14, central tube, 15,
Cylinder, 16, shell-side outlet.
Specific embodiment
Fig. 1,2 show a kind of structure chart of big flux heat exchange fixed bed reactors of winding tubular type.This winding tubular type is big
Flux heat exchange fixed bed reactors, the shell side of reactor include the first end socket 2 for being equipped with shell side inlet 1 and the first manhole 7, are equipped with
The cylinder 15 of collet 12 and the second end socket 2a equipped with shell-side outlet 16 and the second manhole 7a, and fixed using two groups of vessel flanges
It links into an integrated entity, collet 12 is equipped with import and export jacketed piping 11, is respectively equipped with multiple pipes on the first end socket 2, the second end socket 2a
Cheng general pipeline 3.The tube side of reactor uses multithread stock winding type heat exchanger pipe 6, setting the at the first connecting flange 8 in cylinder 15
The second filter element 9a is arranged, in the first filter element 9 and the second filter element 9a in one filter element 9 at shell-side outlet 16
Between be equipped with air flow method layer I, catalyst distribution layer II and supporting layer III；It is all put in air flow method layer I and supporting layer III
Set support particle 10, according to reaction temperature situation in catalyst distribution layer II, place mixed uniformly catalyst granules 13 with
Particle 10 is supported, the volume accounting of catalyst granules 13 is 100-0.1%；Heat exchanger tube 6 uses helical structure, every layer of each heat exchange
There are gap between pipe 6, innermost layer heat exchanger tube 6 is fixed by central tube 14, is fixed to each other between different layers heat exchanger tube 6, and every layer it
Between there are gaps.The end of heat exchanger tube 6 is connect with tube sheet 5, tube sheet 5 and the fixed company of the flange ring 4 being arranged in tube side general pipeline 3
It connects.Heat exchanger tube 6 is using the multilayer axially arranged around tubular structure, and every layer of heat exchanger tube 6 by more same sizes is wound parallel, respectively
There are the gaps of 0.1 ~ 50 times of pipe outside diameter between each layer between pipe.
The volume accounting streamwise of catalyst granules (13) is by reaction medium concentration, suction in catalyst distribution layer (II)
Exothermic heat characteristic and catalyst tolerable temperature and change in gradient, range is between 0.1%-100%.
When tube side is multi-way, wherein a journey is preheated or is pre-chilled for reaction medium, a journey completes reaction for heat-conducting medium
The control and regulation of temperature.
Embodiment 1
When reaction is exothermic reaction, reaction medium enters reactor by shell side inlet, realizes air-flow by air flow method layer
Evenly distribute, react in catalyst distribution layer, carry out heat release.Through control catalyst granules in catalyst distribution layer
The volume accounting of each position controls reaction speed to prevent reaction temperature runaway.With the progress of reaction, concentration subtracts in reaction medium
It is few, by increasing the volume accounting of catalyst granules in catalyst distribution layer, to prevent reaction speed from declining or stop.Catalyst
The volume accounting of catalyst granules is incrementally increased with reaction medium flow direction in distribution layer, such as: catalyst distribution layer is again
Be divided into 6 layers, cistron flow direction of medium, the volume accounting of catalyst granules is followed successively by 40%, 50%, 60%, 70%,
80%, 90%.Reactor is discharged by shell-side outlet in medium after reaction.Select the tube side of wherein one or more stream stocks total
Pipe, is passed through cryogenic media, exchanges heat in time with medium in shell side, prevent temperature is excessively high from causing catalyst failure.
Embodiment 2
When reaction is the endothermic reaction, air flow method layer evenly distributes reaction medium.Reaction medium is sent out in catalyst distribution layer
Raw reaction, absorbs heat.With the progress of reaction, reaction temperature is reduced, and reaction speed reduces in order to prevent, needs to increase catalysis
The volume accounting of catalyst granules in agent distribution layer.The volume accounting of catalyst granules is with reaction medium in catalyst distribution layer
Flow direction is stepped up, such as: catalyst distribution layer is further divided into 8 layers, back reaction flow direction of medium, the body of catalyst granules
Product accounting is followed successively by 100%, 90%, 80%, 70%, 60%, 50%, 40%, 30%.Medium after reaction passes through shell-side outlet
Reactor is discharged.The tube side general pipeline for selecting wherein one or more stream stocks, is passed through high-temperature medium, changes in time with medium in shell side
Heat maintains the stabilization of temperature in shell side.
Using above-mentioned technical solution, setting supports particle in reactor, air flow method layer is formed, so that reaction medium stream
It can be uniformly distributed, while air flow method layer can increase the turbulivity of reaction medium, can increase anti-when crossing air flow method layer
Answer rate.Above functions reacts reaction medium uniformly, efficiently.By the way that heat exchanger tube in reactor is arranged to
Helical form is remarkably improved heat exchange compactedness compared with traditional shell and tube reactor, and heat exchange flux improves, in diminution equipment ruler
It is very little to be of practical significance.Thermal (temperature difference) stress is effectively solved the problems, such as around pipe type heat transfer Guan Jike, and can be played the role of air-flow and be evenly distributed.
Using the flanged joint in tube side general pipeline at two groups of vessel flange structures and end socket, so that reactor is removable, unloading tube bank can be extracted out,
So as to facilitate the replacement of shell side periodic maintenance and catalyst.
Claims (4)
- The fixed bed reactors 1. a kind of big flux of winding tubular type exchanges heat, the shell side of reactor include equipped with shell side inlet (1) and the The first end socket (2) of one manhole (7), be equipped with collet (12) cylinder (15) and be equipped with shell-side outlet (16) and the second manhole (7a) The second end socket (2a), and be fixedly connected integrally using two groups of vessel flanges, collet (12) is equipped with import and export jacketed piping (11), one or more tube side general pipeline (3) are respectively equipped on the first end socket (2), the second end socket (2a), it is characterized in that: described The tube side of reactor uses multithread stock winding type heat exchanger pipe (6), and first is arranged at the first connecting flange (8) in cylinder (15) The second filter element (9a) is arranged at shell-side outlet (16) in filter element (9), in the first filter element (9) and the second filtering Air flow method layer (I), catalyst distribution layer (II) and supporting layer (III) are equipped between unit (9a)；In air flow method layer (I) and Support particle (10) is all placed in supporting layer (III), according to reaction temperature situation in catalyst distribution layer (II), is placed equal Even mixed catalyst granules (13) and support particle (10), the volume accounting of catalyst granules (13) are 100-0.1%；Heat exchange Manage (6) and use helical structure, there are enough gaps between every layer of each heat exchanger tube (6), in gap catalyst filling particle (13) with It supports particle (10), innermost layer heat exchanger tube (6) is fixed by central tube (14), and different layers heat exchanger tube is fixed to each other between (6), and every There are gaps between layer；The end of the heat exchanger tube (6) is connect with tube sheet (5), and tube sheet (5) and setting are in tube side general pipeline (3) Flange ring (4) be fixedly connected.
- The fixed bed reactors 2. the big flux of a kind of winding tubular type according to claim 1 exchanges heat, it is characterized in that: described change Heat pipe (6) is using the multilayer axially arranged around tubular structure, and every layer of heat exchanger tube (6) by more same sizes is wound parallel, respectively There are the gaps of 0.1 ~ 50 times of pipe outside diameter between each layer between pipe.
- The fixed bed reactors 3. the big flux of a kind of winding tubular type according to claim 1 exchanges heat, it is characterized in that: described urge The volume accounting streamwise of catalyst granules (13) is by reaction medium concentration, heat absorption exothermic character in agent distribution layer (II) Change in gradient with catalyst tolerable temperature, range is between 0.1%-100%.
- The fixed bed reactors 4. the big flux of a kind of winding tubular type according to claim 1 exchanges heat, it is characterized in that: the pipe When journey is multi-way, wherein a journey is preheated or is pre-chilled for reaction medium, a journey completes the control of reaction temperature for heat-conducting medium It adjusts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811585388.0A CN109663545A (en) | 2018-12-24 | 2018-12-24 | A kind of big flux heat exchange fixed bed reactors of winding tubular type |
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| CN201811585388.0A CN109663545A (en) | 2018-12-24 | 2018-12-24 | A kind of big flux heat exchange fixed bed reactors of winding tubular type |
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| CN109663545A true CN109663545A (en) | 2019-04-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228386A (en) * | 2022-05-24 | 2022-10-25 | 大连理工大学 | Wound tube type catalyst component, large-flux heat exchange reactor and preparation method |
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| CN1273232A (en) * | 1999-04-27 | 2000-11-15 | 株式会社日本触媒 | Producing method of methyl acrylic acid |
| CN103240036A (en) * | 2012-02-14 | 2013-08-14 | 杭州林达化工技术工程有限公司 | Temperature stress resistant heat transfer reactor and composite device and application thereof |
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| CN206343160U (en) * | 2016-12-07 | 2017-07-21 | 大唐国际化工技术研究院有限公司 | A kind of methanator of built-in coiled steam generating equipment |
| CN107698421A (en) * | 2017-09-06 | 2018-02-16 | 巨化集团技术中心 | A kind of method for preparing 1,1,1,2,3 pentafluoropropanes |
| CN107774201A (en) * | 2016-08-31 | 2018-03-09 | 楼韧 | A kind of reactor for optimizing temperature and its reaction process and application |
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2018
- 2018-12-24 CN CN201811585388.0A patent/CN109663545A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273232A (en) * | 1999-04-27 | 2000-11-15 | 株式会社日本触媒 | Producing method of methyl acrylic acid |
| CN103240036A (en) * | 2012-02-14 | 2013-08-14 | 杭州林达化工技术工程有限公司 | Temperature stress resistant heat transfer reactor and composite device and application thereof |
| CN107774201A (en) * | 2016-08-31 | 2018-03-09 | 楼韧 | A kind of reactor for optimizing temperature and its reaction process and application |
| CN106268536A (en) * | 2016-09-20 | 2017-01-04 | 重庆鲍斯可燃气工程有限公司 | Reactor for compressed air purification system |
| CN206343160U (en) * | 2016-12-07 | 2017-07-21 | 大唐国际化工技术研究院有限公司 | A kind of methanator of built-in coiled steam generating equipment |
| CN107698421A (en) * | 2017-09-06 | 2018-02-16 | 巨化集团技术中心 | A kind of method for preparing 1,1,1,2,3 pentafluoropropanes |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228386A (en) * | 2022-05-24 | 2022-10-25 | 大连理工大学 | Wound tube type catalyst component, large-flux heat exchange reactor and preparation method |
| CN115228386B (en) * | 2022-05-24 | 2023-10-20 | 大连理工大学 | Winding tube type catalyst component, high-flux heat exchange reactor and preparation method |
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Application publication date: 20190423 |