CN203295405U - Dehydrogenation reaction device for GBL (gamma-butyrolactone) preparation using butanediol - Google Patents
Dehydrogenation reaction device for GBL (gamma-butyrolactone) preparation using butanediol Download PDFInfo
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- CN203295405U CN203295405U CN2013203550659U CN201320355065U CN203295405U CN 203295405 U CN203295405 U CN 203295405U CN 2013203550659 U CN2013203550659 U CN 2013203550659U CN 201320355065 U CN201320355065 U CN 201320355065U CN 203295405 U CN203295405 U CN 203295405U
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- dehydrogenation
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- butyleneglycol
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Abstract
The utility model provides a dehydrogenation reaction device for GBL (gamma-butyrolactone) preparation using butanediol. The dehydrogenation reaction device comprises at least two dehydrogenation reactors which are in parallel connection. A control valve is mounted at the feed inlet end of each dehydrogenation reactor. During actual production, the dehydrogenation reactors can be divided into two work groups, when production of one group is finished and feeding is paused, the other group can be started, so that production continuity is guaranteed, and production efficiency is increased.
Description
Technical field
The utility model relates to the production unit that butyleneglycol prepares gamma-butyrolactone, is specifically related to a kind of butyleneglycol and prepares GBL dehydrogenation reaction device.
Background technology
Isosorbide-5-Nitrae-butyleneglycol (BDO) is a kind of important basic organic chemical industry raw material, mainly for the production of tetrahydrofuran (THF), and polybutyl terapthalate (PBT), γ-butyrolactone (GBL) and urethane (PU).In recent years, due to increasing rapidly of thermoplastic elastic fiber and elastomerics demand, in great demand as TMEG (polytetramethylene ether diol), the PTMG (PTMG) of monomer, make also rapid growth of upstream raw material Isosorbide-5-Nitrae-butyleneglycol demand.γ-butyrolactone is a kind of important Organic Chemicals and fine-chemical intermediate, the high boiling solvent that be also that a kind of functional, solvability is strong, good electrical property, stability are high, nontoxic, uses safety, in fields such as petrochemical complex, medicine, agricultural chemicals, have a wide range of applications, its maximum purposes is to produce methyl-2-pyrrolidone.Therefore, Isosorbide-5-Nitrae-butyleneglycol and γ-butyrolactone are market in urgent need, the Chemicals that added value is high.
Butyleneglycol prepares gamma-butyrolactone, and the processing step that generally adopts now is that butyleneglycol heats, vaporization, then enters dehydrogenation reactor in hydrogen atmosphere, under the condition that catalyzer exists, reacts the butyrolactone of generation.In the prior art actual production process, after the dehydrogenation reactor materials are complete, need to suspend to produce and feed in raw material, then restart work, can not guarantee the continuity of producing, inefficiency.
Summary of the invention
The purpose of this utility model is to prepare GBL dehydrogenation reaction device for a kind of butyleneglycol that the problems referred to above provide, the dehydrogenation reactor that comprises two more parallels, the feed inlet end of each dehydrogenation reactor is equipped with control valve, can in actual production, be divided into two working groups, when one group of complete rear time-out of production is reinforced therein, open another one working group, guaranteed the continuity of producing, improved production efficiency.
Butyleneglycol of the present utility model prepares GBL dehydrogenation reaction device technique scheme: comprise the dehydrogenation reactor of two more parallels, the feed inlet end of each dehydrogenation reactor is equipped with control valve.
Preferably, comprise the dehydrogenation reactor of three parallel connections, the dehydrogenation reactor opening for feed is connected with vaporizer by superheater.
Control valve is magnetic valve.
In dehydrogenation reactor, be provided with helical baffles or segmental baffle.
In dehydrogenation reactor, being provided with helical baffles, is lap connection or staggered overlap joint between traverse baffle.
In dehydrogenation reactor, be provided with segmental baffle, traverse baffle quantity is the 3-8 piece.
The breach action of segmental baffle is 0.35 of dehydrogenation reactor cylinder interior diameter.
Helical baffles or segmental baffle are provided with equally distributed hole.
Butyleneglycol is from after the preheating of butyleneglycol storage tank, with the hydrogen after interchanger and preheater heating again that is come by the blower fan pressure in hydrogen gas buffer, enter in the same way vaporizer, BDO enters superheater after vaporizing fully, after heat-conducting oil heating, enter again dehydrogenation reactor reaction under catalyzer exists, after the butyrolactone that generates and the gas mixture of hydrogen return interchanger heat exchange cooling, enter the laggard crude product tank of refrigerating unit condensation, gas-liquid separation device before the non-condensable gas air inlet fan, part hydrogen is emptying, and a part is delivered to the hydrogen gas buffer circulation by blower fan.
The beneficial effects of the utility model are: this butyleneglycol prepares GBL dehydrogenation reaction device, the dehydrogenation reactor that comprises two more parallels, the feed inlet end of each dehydrogenation reactor is equipped with control valve, can in actual production, be divided into two working groups, when one group of complete rear time-out of production is reinforced therein, open another one working group, guaranteed the continuity of producing, improved production efficiency.
The accompanying drawing explanation:
Figure 1 shows that one-piece construction schematic diagram of the present utility model;
Figure 2 shows that dehydrogenation reactor structural representation in the utility model;
Figure 3 shows that B-B direction sectional view in Fig. 2.
In figure, 1. butyleneglycol storage tank, 2. vaporizer, 3. superheater, 4. dehydrogenation reactor, 5. preheater, 6. interchanger, 7. hydrogen gas buffer, 8.GBL crude product tank, 9. refrigerating unit, 10. gas-liquid separation device, 11. control valves, 12. traverse baffles.
Embodiment:
In order to understand better the utility model, below in conjunction with example, the technical solution of the utility model is described.
Embodiment 1
Butyleneglycol prepares GBL dehydrogenation reaction device, comprises the dehydrogenation reactor 4 of three parallel connections, and dehydrogenation reactor 4 opening for feeds are connected with vaporizer 2 by superheater 3, and the feed inlet end of each dehydrogenation reactor 4 is equipped with control valve 11.Control valve 11 is magnetic valve.
In dehydrogenation reactor 4, be provided with helical baffles 12, between traverse baffle 12, be staggered overlap joint.
Butyleneglycol is from after 1 preheating of butyleneglycol storage tank, with the hydrogen after preheater 5 and interchanger 6 heating again that is come by the blower fan pressure in hydrogen gas buffer 7, enter in the same way vaporizer 2, BDO enters superheater 3 after vaporizing fully, after heat-conducting oil heating, enter again dehydrogenation reactor 4 reaction under catalyzer exists, after the butyrolactone that generates and the gas mixture of hydrogen return interchanger 6 heat exchange coolings, enter the laggard crude product tank of refrigerating unit 9 condensation, gas-liquid separation device 10 before the non-condensable gas air inlet fan, part hydrogen is emptying, and a part is delivered to hydrogen gas buffer 7 circulations by blower fan.The dehydrogenation reactor 4 of three parallel connections, in actual production, work for two simultaneously, and one standby, while after production is complete, needing again to feed in raw material, opens standby reactor, guaranteed the continuity of producing, and improved production efficiency.
Embodiment 2
Butyleneglycol prepares GBL dehydrogenation reaction device, comprises the dehydrogenation reactor 4 of four parallel connections, and dehydrogenation reactor 4 opening for feeds are connected with vaporizer 2 by superheater 3, and the feed inlet end of each dehydrogenation reactor 4 is equipped with control valve 11.Control valve 11 is magnetic valve.
In dehydrogenation reactor 4, be provided with segmental baffle 12, traverse baffle 12 quantity are 6.
The breach action of segmental baffle 12 is 0.35 of 4 interior diameters of dehydrogenation reactor.
Segmental baffle is provided with equally distributed hole.Aperture is 0.2-0.8cm.
Butyleneglycol is from after 1 preheating of butyleneglycol storage tank, with the hydrogen after preheater 5 and interchanger 6 heating again that is come by the blower fan pressure in hydrogen gas buffer 7, enter in the same way vaporizer 2, BDO enters superheater 3 after vaporizing fully, after heat-conducting oil heating, enter again dehydrogenation reactor 4 reaction under catalyzer exists, after the butyrolactone that generates and the gas mixture of hydrogen return interchanger 6 heat exchange coolings, enter the laggard crude product tank of refrigerating unit 9 condensation, gas-liquid separation device 10 before the non-condensable gas air inlet fan, part hydrogen is emptying, and a part is delivered to hydrogen gas buffer 7 circulations by blower fan.The dehydrogenation reactor 4 of four parallel connections, in actual production, work for two simultaneously, and two standby, while after production is complete, needing again to feed in raw material, opens standby reactor, guaranteed the continuity of producing, and improved production efficiency.
Claims (8)
1. a butyleneglycol prepares GBL dehydrogenation reaction device, it is characterized in that, comprise the dehydrogenation reactor of two more parallels, the feed inlet end of each dehydrogenation reactor is equipped with control valve.
2. the butyleneglycol shown according to claim 1 prepares GBL dehydrogenation reaction device, it is characterized in that, comprise the dehydrogenation reactor of three parallel connections, the dehydrogenation reactor opening for feed is connected with vaporizer by superheater.
3. the butyleneglycol shown according to claim 1 prepares GBL dehydrogenation reaction device, it is characterized in that, control valve is magnetic valve.
4. the butyleneglycol shown according to claim 1 and 2 prepares GBL dehydrogenation reaction device, it is characterized in that, in dehydrogenation reactor, is provided with helical baffles or segmental baffle.
5. the butyleneglycol shown according to claim 4 prepares GBL dehydrogenation reaction device, it is characterized in that, in dehydrogenation reactor, is provided with helical baffles, between traverse baffle, is lap connection or staggered overlap joint.
6. the butyleneglycol shown according to claim 4 prepares GBL dehydrogenation reaction device, it is characterized in that, in dehydrogenation reactor, be provided with segmental baffle, traverse baffle quantity is the 3-8 piece.
7. the butyleneglycol shown according to claim 6 prepares GBL dehydrogenation reaction device, it is characterized in that, the breach action of segmental baffle is 0.35 of dehydrogenation reactor cylinder interior diameter.
8. the butyleneglycol shown according to claim 4 prepares GBL dehydrogenation reaction device and it is characterized in that, helical baffles or segmental baffle are provided with equally distributed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203550659U CN203295405U (en) | 2013-06-20 | 2013-06-20 | Dehydrogenation reaction device for GBL (gamma-butyrolactone) preparation using butanediol |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203550659U CN203295405U (en) | 2013-06-20 | 2013-06-20 | Dehydrogenation reaction device for GBL (gamma-butyrolactone) preparation using butanediol |
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| CN203295405U true CN203295405U (en) | 2013-11-20 |
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| CN2013203550659U Expired - Lifetime CN203295405U (en) | 2013-06-20 | 2013-06-20 | Dehydrogenation reaction device for GBL (gamma-butyrolactone) preparation using butanediol |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995601A (en) * | 2020-09-15 | 2020-11-27 | 安徽英特力工业工程技术有限公司 | Reaction system for preparing GBL |
-
2013
- 2013-06-20 CN CN2013203550659U patent/CN203295405U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995601A (en) * | 2020-09-15 | 2020-11-27 | 安徽英特力工业工程技术有限公司 | Reaction system for preparing GBL |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20131120 |
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| CX01 | Expiry of patent term |