CN208928115U - A kind of special reactor preparing tetrahydrofuran - Google Patents
A kind of special reactor preparing tetrahydrofuran Download PDFInfo
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- CN208928115U CN208928115U CN201821360925.7U CN201821360925U CN208928115U CN 208928115 U CN208928115 U CN 208928115U CN 201821360925 U CN201821360925 U CN 201821360925U CN 208928115 U CN208928115 U CN 208928115U
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- autoclave body
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Abstract
The utility model discloses a kind of special reactors for preparing tetrahydrofuran to be additionally provided with integrated heater including vertical autoclave body；The ontology of integrated heater is the metal tube of U-shaped, and metal tube penetrates through the lower sidewalls of autoclave body, horizontally protrudes into autoclave body, the both ends being exposed to outside autoclave body are connect with steam pipe.The beneficial effects of the utility model are: heat source is placed directly within the kettle heart, it is no longer necessary to which agitating paddle can keep the intact of catalyst, while can provide good heating effect again.
Description
Technical field
The utility model belongs to chemical field, specifically a kind of special reactor for preparing tetrahydrofuran.
Background technique
Tetrahydrofuran is a kind of important organic synthesis raw material, and is the solvent of function admirable, have " alembroth " it
Claim, there is excellent dissolubility to many organic matters and inorganic matter, dissolves allization in addition to polyethylene, polypropylene and fluororesin
Object is closed, especially suitable for dissolving butylaniline, polyvinyl chloride, Vingon, is widely used as surface coating, anticorrosive paint, print
The solvent of brush ink, tape and film coating, and be used as reaction dissolvent, can arbitrarily be controlled when for aluminium electroplating bath aluminum layer thickness and
It is bright.It, can be because impurity and side reaction in raw material produce during preparing tetrahydrofuran by 1,4-butanediol catalytic dehydration
Raw a small amount of impurity, impurities accumulation lead to catalyst activity reduction, it is necessary to control content.The tetrahydro furan that 1,4- Butanediol generates
Boiling point of muttering is very low (66 DEG C), it is easy to vaporize, entrainment phenomenon easy to form in vaporescence, by unreacted Isosorbide-5-Nitrae-fourth two
Pure and mild impurity takes to outside reaction kettle, this is undesirable.1,4- Butanediol generates catalysis used in tetrahydrofuran
Agent is a kind of lower catalyst of intensity, if being equipped with mechanical agitator, it is easy to the structure of catalyst is damaged, and
If do not stirred, catalyst as hot-spot and cause to fail, thus be unable to satisfy technique requirement.Chinese patent literature
CN104772099A discloses " heating reaction kettle " on July 15th, 2015, has autoclave body, kettle cover, cooling coil, blender
And motor；The kettle cover and autoclave body airtight connection；The cooling coil is arranged in autoclave body；The blender is arranged in autoclave body
It is interior, and its central axes is overlapped with autoclave body central axes；The shaft of the motor is connected with blender；Also there is heating furnace device；
The heating furnace device is cylindrical, and is coated on autoclave body outer wall.The applicant declares, using cladding heating dress outside autoclave body
It sets, avoids heating device from occupying autoclave body inner space, while reaching preferable heating effect.The technology is exactly current typical band
The container of heating response function is obviously unable to satisfy the production technology characteristic of tetrahydrofuran from the point of view of the analysis of front.
Summary of the invention
Based on problem above, the utility model provides a kind of special reactor for preparing tetrahydrofuran, and heat source is directly set
In the kettle heart, it is no longer necessary to which agitating paddle can keep the intact of catalyst, while can provide good heating effect again.
In order to realize goal of the invention, the utility model adopts the following technical solution: a kind of Special reverse preparing tetrahydrofuran
Kettle is answered, including vertical autoclave body, is additionally provided with integrated heater；The ontology of integrated heater is the metal tube of U-shaped, metal tube perforation
The lower sidewalls of autoclave body, are horizontally protruded into autoclave body, and the both ends being exposed to outside autoclave body are connect with steam pipe.
The special reactor for preparing tetrahydrofuran of this programme design, autoclave body use vertical layout, circle generally can be used
The autoclave body of cylindricality or multi-edge column-shaped.Integrated heater is equipped in the lower section of autoclave body.The main body of integrated heater is the metal of U-shaped
Pipe, can be single, be also possible in parallel more, the both ends of metal tube are connect with steam pipe.Metal tube is horizontal from autoclave body
Side wall perforation is protruded into autoclave body, and the central area of material to be heated in autoclave body is exactly in.Steam from one end of metal tube into
Enter, after metal pipe-wall and material carry out heat exchange, condensed water is flowed out from the other end of metal tube.Such design can make
Heat exchange occurs directly in the central area of material to be heated, keeps heating efficiency higher, required time is also shorter.
Preferably, the bottom on the inside of autoclave body is equipped with gas distributor, gas distributor is the pipe of horizontal layout, if above having
Dry gas hole；The opening of gas distributor is set to outside autoclave body.Due to the catalyst of 1,4- butanediol catalytic dehydration production tetrahydrofuran
Blade stirring should not be used, therefore this programme devises gas distributor in autoclave body.Gas distributor is one horizontally disposed
Snorkel, inlet end be set to autoclave body outside, pipe shaft be equipped with several stomatas.Pass through the inlet end Continuous Perfusion to gas distributor
Inert gas, so that it may so that gas is overflowed from the stomata of pipe shaft, form bubble, float up to material top surface from material lower section.?
In the floating-upward process of bubble, the material on periphery is driven to rise, forms the agitation to liquid material.Due to the physical characteristic of bubble,
Impact damage will not be caused to the catalyst being blended in material, therefore not only can be very good to realize mixing effect, but also can keep away
Exempt to damage catalyst.
Preferably, the gas distributor includes that two long tubes disposed in parallel and both ends connect with two long tubes middle part respectively
The short tube connect, long tube and short tube connect into H-shaped, and stomata is set on long tube, and opening direction is outside；Two pieces of isolation boards are additionally provided with, every
Setting direction from plate is vertically to length direction is parallel with long tube；Isolation board and long tube correspond, and the lower end of isolation board
It is tightly attached to the top of corresponding long tube；The metal tube of U-shaped is between two isolation boards.In the technical scheme, by gas distributor
Shape be determined as H-shaped, stomata is set on two long tubes of H-shaped, and above two long tubes of H-shaped be provided with vertical isolation
Plate is the metal tube of integrated heater between two isolation boards, to being separated into isolation board region in autoclave body equipped with metal
The outside of the inside of pipe and close autoclave body side wall.The bubble sprayed in stomata can only be floated by outside, to drive the fortune of material
Dynamic direction is the single cycle around isolation board and gas distributor, keeps the mixing effect of material and heating effect more excellent
Change.
Preferably, being additionally provided with kettle top packing area；Kettle top packing area is vertical drum-shaped, side wall and top surface sealing, bottom
It is connected at the top of portion and autoclave body；The top of kettle top packing area is exported equipped with Gaseous materials, and side wall is equipped with condensate liquid refluxing opening；Kettle top is filled out
Expect in area filled with the filler for inhibiting material mist.Tetrahydrofuran and water are heated in vaporescence, mist easy to form, mist meeting
Unreacted 1,4-butanediol and impurity are carried secretly to next workshop section, the purity of tetrahydrofuran is influenced and causes the loss of raw material.This
Scheme provides the scheme for inhibiting mist.In top design the kettle top packing area of one drum-shaped, side wall and the top surface of autoclave body
All be it is closed, only bottom surface is connect with kettle top.Filled with the filler for inhibiting mist in kettle top packing area.On the top of kettle top packing area
Face design has Gaseous materials outlet, escapes for the material of vaporization.Sidewall design in kettle top packing area has condensate liquid refluxing opening, with
Just it is being back to autoclave body again after external condensation equipment is condensed into liquid from the portion gas of Gaseous materials outlet evolution
It is interior.It is such to operate similar rectifying, it can effectively reduce and slip out taking out of for impurity and 1,4-butanediol in object, reduce subsequent work
The loss of the processing difficulty and material of skill.
Preferably, material inlet is set to the top of autoclave body side wall；The connection of the upper end of material inlet and feed pipe, feed pipe
Main body be vertically arranged, lower end horizontal opening is in the top of integrated heater ontology.By the lower end horizontal opening of feed pipe in collection
At the top of heater body, charging can be made gentle, torrent impact is avoided artificially mist to be caused to generate.
Preferably, metal tube is externally provided with radiating fin.Heat exchanger effectiveness can be improved in this way, further when compression heating
Between.
In conclusion the beneficial effects of the utility model are: heat source is placed directly within the kettle heart, it is no longer necessary to agitating paddle, it can
To keep the intact of catalyst, while good heating effect can be provided again.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the top view of gas distributor.
Fig. 4 is that Matter Transfer heats schematic diagram in autoclave body.
Wherein: 1 autoclave body, 2 integrated heaters, 3 metal tubes, 4 gas distributors, 5 isolation boards, 6 kettle top packing areas, 7 gaseous states
Material outlet, 8 condensate liquid refluxing openings, 9 material inlets, 10 feed pipes, 11 residual liquid discharge mouths, 12 manholes, 13 catalyst charging holes,
14 catalyst outlets.
Specific embodiment
Embodiment as shown in Figure 1 and Figure 2 is a kind of special reactor for preparing tetrahydrofuran.This prepares tetrahydrofuran
The autoclave body 1 of special reactor is drum-shaped, using vertical structure.Integrated heater 2 is equipped in the middle and lower part of autoclave body.Integrated heating
The ontology of device is the metal tube 3 of U-shaped, and metal tube penetrates through the lower sidewalls of autoclave body, horizontally protrudes into autoclave body, be exposed to autoclave body
Outer both ends are connect with steam pipe, to import steam export condensed water.Metal tube is externally provided with radiating fin.Bottom on the inside of autoclave body
Equipped with gas distributor 4, gas distributor is the pipe of horizontal layout, above there is several stomatas；The opening of gas distributor is set to kettle
Inert gas can be inwardly perfused in body lower end.As shown in figure 3, gas distributor includes two long tubes disposed in parallel in this example
The short tube connecting respectively with two long tubes middle part with both ends, long tube and short tube connect into H-shaped, and stomata is set on long tube, opening direction
Outward.Two pieces of isolation boards 5 are additionally provided with, the setting direction of isolation board is vertically to length direction is parallel with long tube；Isolation board and length
Pipe corresponds, and the lower end of isolation board is tightly attached to the top of corresponding long tube；The metal tube of the U-shaped of integrated heater be located at two every
From between plate.
Kettle top packing area 6 is equipped at the top of autoclave body.Kettle top packing area is vertical drum-shaped, and side wall and top surface seal,
It is connected at the top of bottom and autoclave body；The top of kettle top packing area is equipped with Gaseous materials outlet 7, and side wall is equipped with condensate liquid refluxing opening 8；Kettle
It pushes up in packing area filled with the filler for inhibiting material mist.
Material inlet 9 is set to the top of autoclave body left side wall；Material inlet is connect with the upper end of feed pipe 10, the master of feed pipe
Body is vertically arranged, and lower end horizontal opening is in the top of integrated heater ontology.
Catalyst charging hole 13 is located at autoclave body right shoulder；Catalyst outlet is located on the left of autoclave body bottom central point；Place
The material raffinate finished is managed to be discharged by the residual liquid discharge mouth 11 of autoclave body lower right.The middle and upper part of autoclave body side wall is additionally provided with manhole
12, it can be passed in and out if necessary for operator.
The special reactor for preparing tetrahydrofuran of this example, after placing catalyst, 1,4-butanediol is from material inlet
Into integrated heater heats the intracorporal material of kettle after opening steam, and under the effect of the catalyst, 1,4-butanediol is de-
Water generates tetrahydrofuran and water.Inert gas is persistently injected from the opening of the gas distributor of autoclave body lower end simultaneously, by gas point
Stomata on cloth device overflows, and bubble is formed, by floating to liquid level below material.As shown in figure 4, bubble constantly gush out, on
Rise, the circulation for the long tube for driving material to form around isolation board and gas distributor, in the cyclic process, material sufficiently and
Catalyst mixing, reaction, the abundant heating of the U-shaped metal tube by integrated heater, the material after vaporization pass through kettle top filler
Qu Houcong Gaseous materials outlet evolution, enters next workshop section.
During entirely preparing tetrahydrofuran, material only forms sufficiently orderly agitation under the promotion of bubble, no
Catalyst can be damaged；The U-shaped metal tube of integrated heater extends transversely into the center of autoclave body, directly adds to material center
Heat, effect more preferable time more save.
Claims (6)
1. a kind of special reactor for preparing tetrahydrofuran, including vertical autoclave body (1), characterized in that be additionally provided with integrated heating
Device (2)；The ontology of integrated heater is the metal tube (3) of U-shaped, and metal tube penetrates through the lower sidewalls of autoclave body, horizontally protrudes into
In autoclave body, the both ends being exposed to outside autoclave body are connect with steam pipe.
2. a kind of special reactor for preparing tetrahydrofuran according to claim 1, characterized in that the bottom on the inside of autoclave body
Equipped with gas distributor (4), gas distributor is the pipe of horizontal layout, above there is several stomatas；The opening of gas distributor is set to
Outside autoclave body.
3. a kind of special reactor for preparing tetrahydrofuran according to claim 2, characterized in that the gas distributor
Including the short tube that two long tubes disposed in parallel and both ends are connect with two long tubes middle part respectively, long tube and short tube connect into H-shaped, gas
Hole is set on long tube, and opening direction is outside；Two pieces of isolation boards (5) are additionally provided with, the setting direction of isolation board is vertically to length side
To parallel with long tube；Isolation board and long tube correspond, and the lower end of isolation board is tightly attached to the top of corresponding long tube；The gold of U-shaped
Belong to pipe between two isolation boards.
4. a kind of special reactor for preparing tetrahydrofuran according to claim 1 or 2 or 3, characterized in that be additionally provided with kettle
It pushes up packing area (6)；Kettle top packing area is vertical drum-shaped, side wall and top surface sealing, is connected at the top of bottom and autoclave body；Kettle top is filled out
Expect that the top in area is equipped with Gaseous materials outlet (7), side wall is equipped with condensate liquid refluxing opening (8)；Filled with inhibition in kettle top packing area
The filler of material mist.
5. a kind of special reactor for preparing tetrahydrofuran according to claim 1 or 2 or 3, characterized in that material inlet
(9) it is set to the top of autoclave body side wall；Material inlet is connect with the upper end of feed pipe (10), and the main body of feed pipe is vertically arranged, under
Hold horizontal opening in the top of integrated heater ontology.
6. a kind of special reactor for preparing tetrahydrofuran according to claim 1 or 2 or 3, characterized in that outside metal tube
Equipped with radiating fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821360925.7U CN208928115U (en) | 2018-08-22 | 2018-08-22 | A kind of special reactor preparing tetrahydrofuran |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821360925.7U CN208928115U (en) | 2018-08-22 | 2018-08-22 | A kind of special reactor preparing tetrahydrofuran |
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| Publication Number | Publication Date |
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| CN208928115U true CN208928115U (en) | 2019-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821360925.7U Active CN208928115U (en) | 2018-08-22 | 2018-08-22 | A kind of special reactor preparing tetrahydrofuran |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111318236A (en) * | 2020-03-02 | 2020-06-23 | 宁夏美邦寰宇化学有限公司 | Device and method for preparing tetrahydrofuran |
| CN115228383A (en) * | 2022-08-12 | 2022-10-25 | 中化学科学技术研究有限公司 | Device and method for preparing tetrahydrofuran through cyclization of 1, 4-butanediol |
-
2018
- 2018-08-22 CN CN201821360925.7U patent/CN208928115U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111318236A (en) * | 2020-03-02 | 2020-06-23 | 宁夏美邦寰宇化学有限公司 | Device and method for preparing tetrahydrofuran |
| CN115228383A (en) * | 2022-08-12 | 2022-10-25 | 中化学科学技术研究有限公司 | Device and method for preparing tetrahydrofuran through cyclization of 1, 4-butanediol |
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