CN212523064U - Efficient toluene recovery device for abamectin production - Google Patents
Efficient toluene recovery device for abamectin production Download PDFInfo
- Publication number
- CN212523064U CN212523064U CN202021186635.2U CN202021186635U CN212523064U CN 212523064 U CN212523064 U CN 212523064U CN 202021186635 U CN202021186635 U CN 202021186635U CN 212523064 U CN212523064 U CN 212523064U
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- China
- Prior art keywords
- toluene
- pipe
- abamectin
- pipeline
- stills
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- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 title claims abstract description 166
- 238000011084 recovery Methods 0.000 title claims abstract description 32
- 239000005660 Abamectin Substances 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- IBSREHMXUMOFBB-JFUDTMANSA-N 5u8924t11h Chemical compound O1[C@@H](C)[C@H](O)[C@@H](OC)C[C@@H]1O[C@@H]1[C@@H](OC)C[C@H](O[C@@H]2C(=C/C[C@@H]3C[C@@H](C[C@@]4(O3)C=C[C@H](C)[C@@H](C(C)C)O4)OC(=O)[C@@H]3C=C(C)[C@@H](O)[C@H]4OC\C([C@@]34O)=C/C=C/[C@@H]2C)/C)O[C@H]1C.C1=C[C@H](C)[C@@H]([C@@H](C)CC)O[C@]11O[C@H](C\C=C(C)\[C@@H](O[C@@H]2O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@H](OC)C3)[C@@H](OC)C2)[C@@H](C)\C=C\C=C/2[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\2)O)C[C@H]4C1 IBSREHMXUMOFBB-JFUDTMANSA-N 0.000 title claims description 13
- 229950008167 abamectin Drugs 0.000 title claims description 13
- 238000007599 discharging Methods 0.000 claims abstract description 12
- RRZXIRBKKLTSOM-XPNPUAGNSA-N avermectin B1a Chemical compound C1=C[C@H](C)[C@@H]([C@@H](C)CC)O[C@]11O[C@H](C\C=C(C)\[C@@H](O[C@@H]2O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@H](OC)C3)[C@@H](OC)C2)[C@@H](C)\C=C\C=C/2[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\2)O)C[C@H]4C1 RRZXIRBKKLTSOM-XPNPUAGNSA-N 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 37
- 238000004821 distillation Methods 0.000 claims description 32
- 238000004140 cleaning Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 description 20
- 238000009833 condensation Methods 0.000 description 13
- 230000005494 condensation Effects 0.000 description 13
- 238000001816 cooling Methods 0.000 description 6
- 238000000855 fermentation Methods 0.000 description 4
- 230000004151 fermentation Effects 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 241000187747 Streptomyces Species 0.000 description 1
- 241000187392 Streptomyces griseus Species 0.000 description 1
- 230000000895 acaricidal effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000000749 insecticidal effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000003120 macrolide antibiotic agent Substances 0.000 description 1
- 230000001069 nematicidal effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to a technical field of avermectin production facility, concretely relates to high-efficient recovery unit of toluene for avermectin production, including stills, the stills upper end is connected with the discharging pipe, and the discharging pipe is kept away from stills one end is connected with the condenser pipe, and condenser pipe one side fixedly connected with is used for connecting the external pipe of vacuum pump, and the condenser pipe is kept away from discharging pipe one end and is connected with the collection box. The utility model discloses have the effect that can improve the rate of recovery of toluene.
Description
Technical Field
The utility model belongs to the technical field of the technique of avermectin production facility and specifically relates to a high-efficient recovery unit of toluene is used in avermectin production.
Background
The abamectin is a sixteen-membered macrolide antibiotic with similar cluster structure and insecticidal, acaricidal and nematicidal activities, and is produced by fermentation of streptomyces griseus in streptomyces. The existing basic culture solution for producing the abamectin by fermentation takes high-concentration starch as a carbon source, and low-concentration starch or glucose can be supplemented in the later stage of fermentation. After fermentation is finished, the desugarization of the abamectin is currently carried out by adopting toluene for organic extraction, so as to achieve the purpose of purifying the abamectin. In order to respond to the demands of reducing waste liquid discharge and protecting the environment, the industrial production has been provided with a device for recovering toluene.
The current chinese utility model patent like publication number CN209630651U discloses a toluene recycling apparatus, including the stills, stills one side is connected with steam generator, and the opposite side is connected with the condenser. The upper end of the distillation still is provided with a vacuumizing interface, a feeding hole and a discharging hole. Can heat the inside waste material of stills through leading to vapor to stills inside, then through to the inside evacuation of stills, realize the reduction of the boiling point of toluene, make toluene enter into the condenser from the discharge gate in, make the gaseous condensation of toluene be liquid, realize retrieving.
The above prior art solutions have the following drawbacks: when the distillation kettle works, the distillation kettle needs to be vacuumized, so that a large part of toluene gas is pumped into a vacuum pump, the amount of toluene in a condenser is reduced, and the recovery rate of the toluene is reduced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a high-efficient recovery unit of toluene is used in avermectin production, it has the effect that can improve the rate of recovery of toluene.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a high-efficient recovery unit of toluene for avermectin production, includes stills, the stills upper end is connected with the discharging pipe, and the discharging pipe is kept away from stills one end is connected with the condenser pipe, and condenser pipe one side fixedly connected with is used for connecting the external pipe of vacuum pump, and the condenser pipe is kept away from discharging pipe one end and is connected with the collection box.
Through adopting above-mentioned technical scheme, after the external union coupling vacuum pump, can take out the condenser pipe with the toluene gas in the stills through the vacuum pump in, the toluene gas is not too late when taking out the external union coupling, just becomes the liquid form at the condensation in the condenser pipe to flow to the collection box in, make gaseous toluene be taken out the volume reduction in the vacuum pump, thereby increase the rate of recovery of toluene.
The present invention may be further configured in a preferred embodiment as: still keeps away from condenser pipe one side is provided with the first pipeline that is used for leading to water vapor, and first pipe connection has and stretches into standpipe in the still, first pipeline keeps away from still one side is provided with prevents the suck-back subassembly, prevents that the suck-back subassembly is connected with steam generator.
Through adopting above-mentioned technical scheme, when the vacuum pump operation is improper, the waste liquid in the stills easily gets into first pipeline through the standpipe, then in the steam generator of entering, makes steam generator contaminated, through preventing the suck-back subassembly, can prevent the emergence of this condition.
The present invention may be further configured in a preferred embodiment as: the anti-suck-back assembly comprises a box body, one end of the distillation kettle is far away from the first pipeline and is connected with the upper end face of the box body, the upper end face of the box body is further connected with a second pipeline, and one end, far away from the box body, of the second pipeline is connected with a steam generator.
Through adopting above-mentioned technical scheme, when improper operation to the vacuum pump, when taking place the suck-back, the waste liquid is in getting into first pipeline by the standpipe, then flows to the box in, because box inner space is great, makes in the waste liquid can not flow the second pipeline to can not flow steam generator in, cause steam generator's pollution, play the effect of preventing the suck-back.
The present invention may be further configured in a preferred embodiment as: the lower end of the distillation kettle is connected with a cleaning pipe, and a valve is arranged on the cleaning pipe.
Through adopting above-mentioned technical scheme, advance the washing liquid through the feed inlet, after wasing distillation still, open the valve on the scavenge pipe, can discharge the washing liquid, accomplish the washing to distillation still.
The present invention may be further configured in a preferred embodiment as: an observation window is arranged on the recycling box.
Through adopting above-mentioned technical scheme, the observation window is transparent setting, can observe the toluene volume in the collection box through the observation window, and is more convenient.
The present invention may be further configured in a preferred embodiment as: and scale marks are arranged on the observation window.
By adopting the technical scheme, the volume of the methylbenzene in the recovery box can be judged according to the scale marks, and the proportion of the recovered methylbenzene is calculated.
The present invention may be further configured in a preferred embodiment as: the end of the standpipe remote from the first conduit is maintained below the liquid level.
Through adopting above-mentioned technical scheme, can make vapor fully contact with the waste liquid, make the waste liquid fully heated.
The present invention may be further configured in a preferred embodiment as: and the distillation kettle is externally coated with an insulating layer.
Through adopting above-mentioned technical scheme, the heat preservation makes stills reduce the heat dissipation in the course of the work, improves the distillation rate.
To sum up, the utility model discloses a following at least one useful technological effect:
1. after the external pipe is connected with the vacuum pump, the toluene gas in the distillation kettle can be pumped into the condensing pipe through the vacuum pump, and the toluene gas is condensed into liquid in the condensing pipe when the toluene gas is not pumped into the external pipe, so that the toluene gas flows into the recovery box, the amount of the toluene gas pumped into the vacuum pump is reduced, and the recovery rate of the toluene is increased;
2. when taking place the suck-back to vacuum pump misoperation, the waste liquid is in getting into first pipeline by the standpipe, then flows in the box, because box inner space is great, makes the waste liquid can not flow in the second pipeline to can not flow in steam generator, cause steam generator's pollution, play the effect of suck-back prevention.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic diagram showing the structure of a standpipe.
Fig. 3 is a schematic view showing the structure of the condensation duct.
In the figure, 1, a distillation kettle; 11. a feed inlet; 12. a first conduit; 121. a vertical tube; 13. a discharge pipe; 14. cleaning the tube; 15. a heat-insulating layer; 2. a condenser tube; 21. a cooling tube; 3. a recycling bin; 31. an observation window; 311. scale lines; 4. an external connection pipe; 5. a box body; 51. a second conduit; 52. a liquid discharge pipe; 6. and (4) a valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Refer to fig. 1 and fig. 2, do the utility model discloses a high-efficient recovery unit of toluene for avermectin production, including stills 1, stills 1 upper end is provided with feed inlet 11. One side of the upper end of the distillation still 1, which is far away from the feed inlet 11, is connected with a first pipeline 12 for conveying water vapor, the first pipeline 12 is connected with a vertical pipe 121 extending into the distillation still 1, the vertical pipe 121 is vertical to the first pipeline 12, and the distance between the vertical pipe 121 and the lower end of the distillation still 1 is 3-4 cm. One side of the distillation kettle 1 close to the feed inlet 11 is fixedly connected with a discharge pipe 13, one end of the discharge pipe 13 far away from the distillation kettle 1 is connected with a condensation pipe 2, and the condensation pipe 2 is vertical to the discharge pipe 13. The lower end of the condensation pipe 2 is fixedly connected with a recovery box 3. Condenser pipe 2 keeps away from 1 one side fixedly connected with of stills and connects outward 4, connects outward 4 and all communicates with condenser pipe 2, discharging pipe 13, connects outward 4 and is used for connecting the vacuum pump (not drawn in the picture).
When retrieving toluene, put stills 1 with the waste liquid through feed inlet 11 in, then open the vacuum pump, the vacuum pump is through external pipe 4, condenser pipe 2, discharging pipe 13, is bled in to stills 1. The waste liquid in the still 1 is then heated by passing high temperature steam through the first pipe 12 and the standpipe 121. Then the toluene gas passes through the discharge pipe 13 and the condenser pipe 2 once under the action of the vacuum pump, and when the toluene gas reaches the condenser pipe 2, the toluene gas is precooled to form liquid toluene, and then the liquid toluene flows into the recovery tank 3, so that the recovery of the toluene is completed. Standpipe 121 is less apart from the inside bottom of stills 1, can make vapor get into from the bottom of waste liquid, and vapor is sufficient when can be with the waste liquid contact, is that the waste liquid fully heats.
As shown in figure 1, one side of the first pipeline 12, which is far away from the distillation still 1, is provided with a back suction prevention assembly, the back suction prevention assembly comprises a box body 5, and the first pipeline 12 is fixedly connected and communicated with the upper end face of the box body 5. The upper end surface of the box body 5 is further connected with a second pipeline 51 at one side far away from the first pipeline 12, and a steam generator (not shown in the figure) is connected at one end of the second pipeline 51 far away from the box body 5. Steam enters the tank 5 through the second pipe 51 and then enters the first pipe 12 and the standpipe 121, emerges from the end of the standpipe 121, and enters the waste liquid, heating it.
If improper to the vacuum pump operation, when taking place the suck-back, the waste liquid is in getting into first pipeline 12 by standpipe 121, then flows to in the box 5, because box 5 inner space is great, makes the waste liquid can not flow to in the second pipeline 51 to can not flow to steam generator in, cause steam generator's pollution, play the effect of preventing suck-back. The bottom of the box body 5 is also provided with a drain pipe 52, and the drain pipe 52 is provided with a valve 6. The waste liquid in the tank 5 can be discharged through the drain pipe 52.
As shown in fig. 3, a coiled cooling tube 21 is disposed in the condensation tube 2, and two ends of the cooling tube 21 are respectively fixedly connected to the wall of the condensation tube 2 and extend out of the condensation tube 2. When the condenser tube 2 is used, the two ends of the cooling tube 21, which penetrate out of the condenser tube 2, are connected with water pipes (not shown in the figure), and cold water is introduced into the cooling tube 21, so that the temperature in the condenser tube 2 is reduced, and the condensation effect is achieved.
As shown in fig. 1 and 3, the extension pipe 4 is located at an intermediate position of the condensation duct 2. During the vacuum pumping, the toluene gas can meet the cooling pipe 21 and be condensed into liquid when reaching the position of the external connecting pipe 4, and the toluene gas is not pumped into the vacuum pump. When liquid toluene is gathered at the lower end of the condensation pipe 2 and cannot flow into the recovery tank 3, the position of the external connection pipe 4 is high, so that the liquid toluene cannot flow into the external connection pipe 4.
As shown in fig. 1, the recovery tank 3 is provided with a vertical observation window 31, the observation window 31 is transparent, and the volume of toluene in the recovery tank 3 can be observed through the observation window 31. The observation window 31 is further provided with a scale line 311, and the volume of the toluene in the recovery tank 3 can be judged according to the scale line 311 to calculate the proportion of the recovered toluene.
As shown in fig. 2, after the distillation still 1 works for a period of time, more impurities with higher concentration will be deposited in the distillation still 1, and the distillation still 1 needs to be cleaned. A cleaning pipe 14 is arranged below the distillation still 1, and a valve 6 is arranged on the cleaning pipe 14. Cleaning liquid is fed through the feeding hole 11, after the distillation kettle 1 is cleaned, the valve 6 on the cleaning pipe 14 is opened, the cleaning liquid can be discharged, and the cleaning of the distillation kettle 1 is completed.
As shown in fig. 1, the distillation still 1 is further covered with a heat insulation layer 15, so that heat dissipation of the distillation still 1 is reduced in the working process, and the distillation rate is increased.
The implementation principle of the embodiment is as follows: when the distillation kettle 1 works, the vacuum pump is firstly opened, steam is introduced into the distillation kettle 1, and when the toluene gas reaches the upper end of the condensation pipe 2 and moves downwards, the toluene gas is condensed into liquid and flows into the recovery box 3 to finish the recovery of the toluene. When the distillation still 1 stops working, the vacuum pump is turned off, and then the steam is turned off.
When the distillation still 1 is cleaned, cleaning liquid is poured from the feeding hole 11, and after cleaning is finished, the valve 6 on the cleaning pipe 14 is opened, so that the cleaning liquid can be discharged.
If the vacuum pump is not operated properly, when suck-back occurs, the waste liquid first enters the standpipe 121 and the first pipe 12, and then enters the tank 5, so that the waste liquid does not reach the steam generator.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a high-efficient recovery unit of toluene for avermectin production, includes stills (1), its characterized in that: stills (1) upper end is connected with discharging pipe (13), and discharging pipe (13) are kept away from stills (1) one end is connected with condenser pipe (2), and condenser pipe (2) one side fixedly connected with is used for connecting the external pipe (4) of vacuum pump, and condenser pipe (2) are kept away from discharging pipe (13) one end and are connected with collection box (3).
2. The efficient recovery device of toluene for abamectin production according to claim 1, which is characterized in that: still (1) are kept away from condenser pipe (2) one side is provided with first pipeline (12) that are used for leading to water vapour, and first pipeline (12) are connected with and stretch into standpipe (121) in still (1), and first pipeline (12) are kept away from still (1) one side is provided with prevents the suck-back subassembly, prevents that the suck-back subassembly is connected with steam generator.
3. The efficient recovery device of toluene for abamectin production according to claim 2, characterized in that: prevent suck-back subassembly includes box (5), first pipeline (12) are kept away from stills (1) one end is connected with box (5) up end, and box (5) up end still is connected with second pipeline (51), and box (5) one end is kept away from in second pipeline (51) is connected with steam generator.
4. The efficient recovery device of toluene for abamectin production according to claim 1, which is characterized in that: the lower end of the distillation kettle (1) is connected with a cleaning pipe (14), and a valve (6) is arranged on the cleaning pipe (14).
5. The efficient recovery device of toluene for abamectin production according to claim 1, which is characterized in that: an observation window (31) is arranged on the recovery box (3).
6. The efficient recovery device of toluene for abamectin production according to claim 5, characterized in that: and scale marks (311) are arranged on the observation window (31).
7. The efficient recovery device of toluene for abamectin production according to claim 2, characterized in that: the end of the standpipe (121) remote from the first conduit (12) is maintained below the liquid level.
8. The efficient recovery device of toluene for abamectin production according to claim 1, which is characterized in that: and a heat-insulating layer (15) is coated outside the distillation kettle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021186635.2U CN212523064U (en) | 2020-06-23 | 2020-06-23 | Efficient toluene recovery device for abamectin production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021186635.2U CN212523064U (en) | 2020-06-23 | 2020-06-23 | Efficient toluene recovery device for abamectin production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212523064U true CN212523064U (en) | 2021-02-12 |
Family
ID=74546433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021186635.2U Expired - Fee Related CN212523064U (en) | 2020-06-23 | 2020-06-23 | Efficient toluene recovery device for abamectin production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212523064U (en) |
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2020
- 2020-06-23 CN CN202021186635.2U patent/CN212523064U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210212 |