CN105498262A - Vacuum rectification apparatus with built-in roots vacuum pumps - Google Patents
Vacuum rectification apparatus with built-in roots vacuum pumps Download PDFInfo
- Publication number
- CN105498262A CN105498262A CN201510894911.8A CN201510894911A CN105498262A CN 105498262 A CN105498262 A CN 105498262A CN 201510894911 A CN201510894911 A CN 201510894911A CN 105498262 A CN105498262 A CN 105498262A
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- built
- vaccum pump
- roots vaccum
- rectifying
- vacuum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/10—Vacuum distillation
- B01D3/106—Vacuum distillation with the use of a pump for creating vacuum and for removing the distillate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
- B01D3/146—Multiple effect distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
- B01D3/4205—Reflux ratio control splitter
Abstract
The invention relates to a vacuum rectification apparatus with built-in roots vacuum pumps, which comprises a preheater, a rectification tower, a condenser and a reboiler. The top of the rectification tower communicates with the condenser, the condenser communicates with a vacuum system, and the bottom of the rectification tower communicates with the reboiler; the rectification tower comprises a rectification section packed tower section, an upper stripping section packed tower section, a lower stripping section packed tower section and the first built-in roots vacuum pump sequentially from the top down inside, and the case of the first built-in roots vacuum pump is connected with the internal wall of the rectification tower and sealed; the sidewall of the rectification tower is provided with a feed inlet at a position between the rectification section packed tower section and the upper stripping section packed tower section, and the preheater is arranged outside of the feed inlet and is used for preheating material before the material gets into the rectification tower.
Description
Technical field
The present invention relates to the fractionating device be separated for different boiling mixed material, particularly with the vacuum rectifying apparatus of built-in Roots vaccum pump.
Background technology
The principle of tradition high vacuum rectification heats at the bottom of tower, the condenser of tower top is connected with high vacuum unit, after material is heated at the bottom of tower, vaporization is risen and condensation on condenser, the extraction of a condensed liquid part, a part is back to tower top, make the qualified products concentration that tower top keeps certain, the vapour risen constantly exchanges with the abundant gas-liquid of high concentration product formation of backflow, form low boiling product higher in the top concentration of tower, temperature is lower, pressure lower (vacuum is higher), and close at the bottom of tower, higher boiling raffinate concentration is higher, temperature is higher, pressure larger (vacuum is lower), realize rectifying to be separated.The height of rectifying column is higher, and gas-liquid exchanges more abundant, and separation accuracy is higher, but high rectifying column resistance is larger, tower top and the temperature difference at the bottom of tower and pressure differential (vacuum is poor) larger.
Heat sensitive material refers to responsive to temperature, be heated to and to a certain degree can go bad, namely decompose, aggregate into other chemical substances, and high boiler material refers at ambient pressure the very high chemicals of not easily vaporizing of (when a standard atmospheric pressure) boiling point.These materials bring very large difficulty to rectifying separating-purifying, and the vacuum improving tower top in order to reduce rectification temperature is unique way of traditional rectifying.But helpless for the vacuum at the bottom of tower, the way of segmentation multitower rectifying can only be adopted to reduce tower pressure drop, exactly a high rectifying column is divided into several short rectifying column.A condenser and high vacuum unit is respectively added on the top of each short tower.Crude product through first tower initial gross separation enters next tower continuation rectifying separation again, after multitower is separated, finally make product content touch the mark.Purification practical application for a lot of heat sensitive material can also adopt the method for thin-film distillation to purify, thin-film distillation can realize because vacuum resistance is very little being separated under high vacuum condition, process for heat sensitive material is advantageous, the technology also having a reduction tower resistance adds pressure regulator in rectifying column inside, to reduce vacuum pressure drop, in tower, add a fan leaf rotated exactly, can play a role when comparatively rough vacuum.
Above-mentioned prior art exists asks it is all there is an intrinsic contradiction for general rectifying column, be exactly tower height and pressure drop, tower height degree determines separating power, but along with the pressure drop of the raising tower of separating power is also in rising, be particularly very limited in the rectifying field of high-boiling-point heat-sensitive material.Because in order to reduce boiling point, vacuum just requires very high, and high vacuum can only put on the condenser of tower top, and due to the resistance that tower height and filler produce, it is larger to arrive vacuum pressure drop at the bottom of tower, causes the materials at bottom of tower elevation of boiling point.Simultaneously very high top vacuum degree also can reduce condensation efficiency, the yield of product is decreased, and it is very large that the volume of condenser is also compelled to do.It is very low that condensation temperature also will be done, and adds equipment energy consumption and equipment manufacturing cost.In order to reduce tower reactor pressure, adopt the mode of multitower segmentation rectifying to alleviates to some extent this problem, but still thoroughly can not solve the root problem of tower internal drop, and the observable index of multi-stage column is comparatively large, can cause heat loss in condensing reflux process.Each tower needs a set of independently vacuum pump set, and cause equipment cost very high, energy consumption is huge.And tower internal pressure-regulating device due to the pressure regulator compression ratio of blade structure very little, when rectification under vacuum (comparatively rough vacuum), there is certain effect, along with the voltage regulation result of the raising fan blade of vacuum is lost gradually, so the tower problem of pressure drop of high vacuum rectification can not be solved.The method of thin-film distillation have to be adopted to purify in the purification practical application of a lot of heat sensitive material, thin-film distillation can realize because vacuum resistance is very little being separated under high vacuum condition, process for heat sensitive material is advantageous, but because separating power is very poor, the separative efficiency of single-stage column plate can only be equivalent to compared with rectifying, the necessary gas-liquid give-and-take conditions of rectifying can not be realized, so do not have effect for the feed separation that boiling point is relatively close.
Summary of the invention
The invention provides a kind of vacuum rectifying apparatus with built-in Roots vaccum pump, described vacuum rectifying apparatus comprises: preheater, rectifying column, condenser; Wherein said rectifying tower top is connected with described condenser, and described condenser is connected with vacuum system; Comprise rectifying section packed tower joint, upper stripping section packed tower joint, lower stripping section packed tower joint and the first built-in Roots vaccum pump in wherein said rectifying column from top to bottom successively, the shell of described first built-in Roots vaccum pump connects with the inwall of rectifying column and seals; The position of wherein said rectifying column sidewall on described rectifying section packed tower saves and be described between stripping section packed tower joint is provided with charging aperture, and it is outer for carrying out preheating to the material entered before described rectifying column that described preheater is arranged on described charging aperture.
In an embodiment of the invention, described lower stripping section and described on be also provided with the second built-in Roots vaccum pump between stripping section, the shell of described second built-in Roots vaccum pump connects with the inwall of rectifying column and seals.
In an embodiment of the invention, on described, be also provided with the 3rd built-in Roots vaccum pump between stripping section and described rectifying section packed tower joint, the shell of described 3rd built-in Roots vaccum pump connects with the inwall of rectifying column and seals.
In an embodiment of the invention, be also provided with the 4th built-in Roots vaccum pump on described rectifying section packed tower joint top, the shell of described 4th built-in Roots vaccum pump connects with the inwall of rectifying column and seals.
In an embodiment of the invention, the lobed rotor of each self-contained two the rightabout synchronous rotaries of described first built-in Roots vaccum pump, the second built-in Roots vaccum pump, the 3rd built-in Roots vaccum pump and the 4th built-in Roots vaccum pump, the gap between described rotor, between rotor and vavuum pump outer casing inner wall is 0.6-1mm.
In an embodiment of the invention, described vacuum rectifying apparatus also comprises reboiler, and described reboiler is communicated with at the bottom of described rectifying column.
In an embodiment of the invention, described vacuum rectifying apparatus also comprises reflux ratio controller, described reflux ratio controller is connected with described condensator outlet, thing condensate liquid is steamed from described condenser for collecting, and according to Set scale by its a part feed rectifying column rectifying section packed tower joint top position, and another part is fed cooler with formed steam thing parting liquid.
In an embodiment of the invention, described vacuum rectifying apparatus also comprises discharging and compares controller, described discharging is connected with described reboiler than controller, for collecting the raffinate from described reboiler, and according to Set scale, its part is fed reboiler again, and discharged by another part, thus regulate two kinds of mixed material ratios in reboiler.
In the present invention, the quantity of built-in Roots vaccum pump can increase according to the height of tower with to the actual requirement of vacuum pressure drop or reduce.
Vacuum rectifying apparatus with built-in Roots vaccum pump of the present invention, advantageously overcomes tower resistance, improves vacuum at the bottom of tower, reduce full tower pressure drop, make vacuum at the bottom of tower can reach the vacuum grade of below 50 handkerchiefs, significantly reduce material boiling point, reduce at the bottom of tower and reboiler heating-up temperature.
In rectifying column of the present invention, each tower joint junction devises Roots vaccum pump in multiple stage tower, counteract the pressure drop that each tower joint produces completely, the vacuum environment exceeding top vacuum degree can also be produced, so just can ensure that full tower keeps XHV, the partial drop of pressure of each Ta Jienei can not be added up by entirety, the VLE condition of local tower joint can also be kept at all not affect rectification effect, but rectification temperature significantly declines, to reach or close to the level of thin-film distillation, separating power is identical with rectifying simultaneously, owing to need not too pursue tower top condition of high vacuum degree so the design of condenser becomes is more prone to meet the demands, because the impact of vacuum for condensation efficiency significantly reduces so condensation area and condensation temperature can lower the requirement.Higher boiling or the difficult separation of material of high-thermosensitive can be processed, the range of application of high vacuum rectification is greatly extended.The present invention can not apply and the rectification under vacuum compared with low vacuum.Because the vacuum of rectification under vacuum is lower, vapor stream density is comparatively large, and built-in Roots vaccum pump can not work under the operating mode of air flow flow, can only in high vacuum, more than 2000 handkerchiefs rectification under vacuum and low vacuum rectifying just can play a role under low-density stream conditions, so can not use the present invention.
Use built-in Roots vaccum pump to realize the high vacuum that in tower, each position high vacuum, particularly tower bottom divide, overcome tower resistance and realize the vacuum that vacuum at the bottom of tower meets or exceeds top vacuum unit, realize full tower height vacuum.Built-in Roots vaccum pump adopts Roots's profile of tooth, be applicable to hight atmospheric molecular stream operating mode, owing to being at high temperature work, be stuck after preventing gear high temperature deformation, it is larger that gear clearance will be done, the built-in Roots vacuum efficiency of pump can be affected, so utilize withdrawing fluid compensation gear clearance to improve compression ratio and the pumping efficiency of built-in Roots vaccum pump.
Advantage of the present invention is: thoroughly solve at the bottom of high vacuum rectification tower and the problem of the vacuum reduction that pressure drop produces in tower, full tower height rectification under vacuum is become a reality, heating-up temperature can be made to decline more than 100 degree for high boiler material, heating-up temperature temperature can be reduced for heat sensitive material the range of application that more than 30% (with degree Celsius for benchmark) not only expands high vacuum rectification, also play the effect of energy-conservation reduction equipment manufacturing cost.
The built-in Roots vaccum pump of vitals as this patent, the larger speed of evacuation and high efficiency under there is high vacuum, utilize phegma physical efficiency to make up the excessive problem of high temperature built-in Roots vaccum pump gear clearance, while built-in Roots vaccum pump compression ratio is improved, provide downward passage to withdrawing fluid.Eliminate the liquid trap between tower joint.Reduce taking up room of built-in Roots vaccum pump.The pumping efficiency that built-in Roots vaccum pump is very high under adopting two leaves or three leaf roots rotors to have applicable high vacuum condition, meets the condition of this patent to vacuum.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the vacuum rectifying apparatus with four built-in Roots vaccum pumps of the present invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1
As shown in Figure 1, the vacuum rectifying apparatus with built-in Roots vaccum pump of the present invention comprises preheater 1, rectifying column 2, condenser 3, reboiler 4.Rectifying column 2 top is connected with condenser 3, and condenser 3 is connected with vacuum system 5, and rectifying column 2 end is communicated with reboiler 4.Rectifying column 2 comprises the 4th built-in Roots vaccum pump 214, rectifying section packed tower joint the 221, the 3rd built-in Roots vaccum pump 213, upper stripping section packed tower joint the 222, second built-in Roots vaccum pump 212, lower stripping section packed tower joint 223 and the first built-in Roots vaccum pump 211 from top to bottom successively.The shell of the built-in Roots vaccum pump 212 of the first built-in Roots vaccum pump 211, second, the 3rd built-in Roots vaccum pump 213 and the 4th built-in Roots vaccum pump 214 all connects with the inner wall surrounding of rectifying column 2 and seals for one week, thus makes the whole materials refluxed from top to bottom in rectifying column have to pass through built-in Roots vaccum pump thus soak its rotor.The position of rectifying column 2 sidewall between the 3rd built-in Roots vaccum pump 213 and upper stripping section packed tower joint 222 is provided with material inlet, and it is outer for carrying out preheating to the material entered before rectifying column 2 that preheater 1 is arranged on material inlet, measured by flowmeter 15.The lobed rotor of the built-in Roots vaccum pump 212 of the first built-in Roots vaccum pump 211, second, the 3rd built-in Roots vaccum pump 213 and each self-contained two the rightabout synchronous rotaries of the 4th built-in Roots vaccum pump 214, the gap between rotor, between rotor and vavuum pump outer casing inner wall is 0.8mm.Vacuum rectifying apparatus also comprises reflux ratio controller 6, reflux ratio controller 6 exports with condenser 3 and is connected, thing condensate liquid is steamed for what collect condenser 3, and according to Set scale by its a part feed rectifying column 2 the 4th built-in Roots vaccum pump 214 and rectifying section packed tower joint 221 between position, and another part is fed cooler 7 with formed steam thing parting liquid.Vacuum rectifying apparatus also comprises discharging than controller 8, discharging is connected with reboiler 4 than controller 8, for collecting the raffinate from reboiler 4, and its part fed again reboiler 4 according to Set scale or pass into above lower stripping section 223 according to material characteristic by conversion valve 14, and discharged by another part, thus regulate two kinds of mixed material ratios in reboiler.
Raw material passes through charging measuring pump 10 and preheater 1 by head tank 9, enter rectifying column 2, feed distributor 231 is had to be evenly distributed on the packed tower joint 222 of stripping section, vacuum pump set now above tower top provides very high vacuum, in the raw material of preheating, more lower boiling batch ingredients can be partially vaporized and rise, and the component vaporization of higher seldom, great majority can be declined by filler and be arrived stripping section packed tower and save in the second built-in Roots vaccum pump 212 of 222 bottoms, the gap continuing through a pair gear in the second built-in Roots vaccum pump 212 again flows to lower stripping section packed tower joint 223, reboiler 4 is entered eventually through lower stripping section packed tower joint 223 and the first built-in Roots vaccum pump 211 below it, the high vacuum that the material of the rear higher of heating and the more lower boiling material of trace are risen through the first built-in Roots vaccum pump 211 by again vaporizing to be provided enters lower stripping section packed tower joint 223, realize gas-liquid with the liquid flow down above to exchange, vapour rise and under the high vacuum effect that provides of the second built-in Roots vaccum pump 212 of heating up in a steamer above packed tower joint 223 is provided under arrive stripping section packed tower joint 222, and carry out gas-liquid exchange with the liquid flowed downward, the material that boiling point is lower can be more maintenance vaporized state and continue to rise to rectifying section packed tower joint 221 under the high vacuum effect that provides of the 3rd built-in Roots vaccum pump 213 above upper stripping section packed tower joint 222, and carry out gas-liquid exchange with the withdrawing fluid (product of high-load) of condenser 3 condensation.Above final arrival rectifying section 221 the 4th built-in Roots vaccum pump 214 also enters condenser 3 condensation liquefaction under the high vacuum condition provided at the 4th built-in Roots vaccum pump 214 and a part being collected cooler 7, discharging by steaming thing discharging pump 11, and part realizes the equilibrium condition of rectifying by reflux ratio controller 6 reflux splitter 233 be back in rectifying column 2 between the 4th built-in Roots vaccum pump 214 and rectifying section packed tower joint 221.
A raffinate part after reboiler 4 is heat vaporized is back to the reflux splitter 232 above lower stripping section packed tower joint 223 by raffinate reflux pump 13 or is directly back to reboiler 4 (determining as the case may be) to keep tower bottoms concentration as far as possible not containing low boiling component, changes by conversion valve 14.Another part is sent by raffinate discharging pump 12 than controller 8 through discharging.Realize whole rectifying separation process at this point.
Embodiment 2
Embodiment 2 is only with the difference of embodiment 1, and vacuum rectifying apparatus only comprises the first built-in Roots vaccum pump, the second built-in Roots vaccum pump and the 3rd built-in Roots vaccum pump, and does not comprise the 4th built-in Roots vaccum pump.
Embodiment 3
Embodiment 3 is only with the difference of embodiment 1, and vacuum rectifying apparatus only comprises the first built-in Roots vaccum pump and the second built-in Roots vaccum pump, and does not comprise the 3rd built-in Roots vaccum pump and the 4th built-in Roots vaccum pump.
Embodiment 4
Embodiment 4 is only with the difference of embodiment 1, and vacuum rectifying apparatus only comprises the first built-in Roots vaccum pump and the 3rd built-in Roots vaccum pump, and does not comprise the second built-in Roots vaccum pump and the 4th built-in Roots vaccum pump.
Embodiment 5
Embodiment 5 is only with the difference of embodiment 1, and vacuum rectifying apparatus only comprises the first built-in Roots vaccum pump, and does not comprise the second built-in Roots vaccum pump, the 3rd built-in Roots vaccum pump and the 4th built-in Roots vacuum.
Comparative example 1
Comparative example 1 is only with the difference of embodiment 1, does not arrange any built-in Roots vaccum pump in rectifying column, and tower top applies high vacuum system.
Comparative example 2 is only with the difference of embodiment 1, does not arrange any built-in Roots vaccum pump in rectifying column, and tower top only apply in low vacuum system.
For being separated of linseed oil ethyl ester and ω-3 ethyl ester (in linseed oil ethyl ester general containing about 50% ω-3 ethyl ester)
Table 1. is for the rectifying Data Comparison of ω-3 ethyl ester in linseed oil ethyl ester
Column bottom temperature reduces by 70 degree, and vacuum improves an order of magnitude.
Yield improves obviously, and reason is that rectifying at a lower temperature can make ω-3 can not Yin Gaowen transposition or polymerization, and final content slightly improves.
Laboratory apparatus;
Beijing North instrument vacuum technique development corporation, Ltd., thermocouple numeral vacuum meter 52-D.
Xiamen space electricity CM5008 temperature digital controller.
Agilent 6280 gas chromatograph.
Stainless steel rectifying column,
Booster vacuum pump,
Column plate sum 22
Reflux ratio 1; 1 (less reflux ratio can reduce raw material heated time increase reflux ratio and can improve the content's index of product but can reduce yield)
As can be seen from above experimental data, the great advantage that technical advantage of the present invention has for refined natural high-boiling-point heat-sensitive material.
Claims (8)
1. with a vacuum rectifying apparatus for built-in Roots vaccum pump, described vacuum rectifying apparatus comprises: preheater, rectifying column, condenser;
Wherein said rectifying tower top is connected with described condenser, and described condenser is connected with vacuum system;
Comprise rectifying section packed tower joint, upper stripping section packed tower joint, lower stripping section packed tower joint and the first built-in Roots vaccum pump in wherein said rectifying column from top to bottom successively, the shell of described first built-in Roots vaccum pump connects with the inner wall surrounding of described rectifying column and seals for one week;
The position of sidewall on described rectifying section packed tower saves and be described between stripping section packed tower joint of wherein said rectifying column is provided with charging aperture, and it is outer for carrying out preheating to the material entered before described rectifying column that described preheater is arranged on described charging aperture.
2. vacuum rectifying apparatus according to claim 1, wherein on described lower stripping section packed tower saves and be described, be also provided with the second built-in Roots vaccum pump between stripping section packed tower joint, the shell of described second built-in Roots vaccum pump connects with the inner wall surrounding of described rectifying column and seals for one week.
3. vacuum rectifying apparatus according to claim 1, wherein on described lower stripping section packed tower saves and be described, be also provided with the second built-in Roots vaccum pump between stripping section packed tower joint, on described, be also provided with the 3rd built-in Roots vaccum pump between stripping section packed tower joint and described rectifying section packed tower joint, the shell of described second built-in Roots vaccum pump and described 3rd built-in Roots vaccum pump connects with the inner wall surrounding of described rectifying column and seals respectively for one week.
4. vacuum rectifying apparatus according to claim 1, wherein on described lower stripping section packed tower saves and be described, be also provided with the second built-in Roots vaccum pump between stripping section packed tower joint, the 3rd built-in Roots vaccum pump is also provided with between stripping section packed tower joint and described rectifying section packed tower joint on described, also be provided with the 4th built-in Roots vaccum pump on described rectifying section packed tower joint top, the shell of described second built-in Roots vaccum pump, the 3rd built-in Roots vaccum pump and the 4th built-in Roots vaccum pump connects with the inner wall surrounding of rectifying column and seals respectively for one week.
5. the vacuum rectifying apparatus according to any one of Claims 1-4, the lobed rotor of each self-contained two the rightabout synchronous rotaries of wherein said first built-in Roots vaccum pump, the second built-in Roots vaccum pump, the 3rd built-in Roots vaccum pump and the 4th built-in Roots vaccum pump, the gap between described rotor, between the built-in Roots vaccum pump outer casing inner wall at rotor and its place is 0.6-1.0mm.
6. the vacuum rectifying apparatus according to any one of Claims 1-4, wherein said vacuum rectifying apparatus also comprises reboiler, and described reboiler is connected with at the bottom of described rectifying column.
7. the vacuum rectifying apparatus according to any one of Claims 1-4, wherein said vacuum rectifying apparatus also comprises reflux ratio controller, described reflux ratio controller is connected with described condensator outlet, thing condensate liquid is steamed from described condenser for collecting, and according to Set scale by its a part feed described rectifying column rectifying section packed tower joint top position, and another part is fed cooler with formed steam thing parting liquid.
8. the vacuum rectifying apparatus according to any one of claim 6, wherein said vacuum rectifying apparatus also comprises discharging and compares controller, described discharging is connected with described reboiler than controller, for collecting the raffinate from described reboiler, and according to Set scale, its a part of described raffinate is fed described reboiler again, and discharged by raffinate described in another part, thus regulate the ratio of the mixed material in described reboiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510894911.8A CN105498262B (en) | 2015-12-01 | 2015-12-07 | A kind of vacuum rectifying apparatus with built-in Roots vaccum pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510869176 | 2015-12-01 | ||
| CN2015108691765 | 2015-12-01 | ||
| CN201510894911.8A CN105498262B (en) | 2015-12-01 | 2015-12-07 | A kind of vacuum rectifying apparatus with built-in Roots vaccum pump |
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| CN105498262A true CN105498262A (en) | 2016-04-20 |
| CN105498262B CN105498262B (en) | 2018-04-17 |
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| CN201510894911.8A Expired - Fee Related CN105498262B (en) | 2015-12-01 | 2015-12-07 | A kind of vacuum rectifying apparatus with built-in Roots vaccum pump |
| CN201521007645.4U Expired - Fee Related CN205269088U (en) | 2015-12-01 | 2015-12-07 | Vacuum rectifying apparatus with built -in roots vacuum pump |
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| CN201521007645.4U Expired - Fee Related CN205269088U (en) | 2015-12-01 | 2015-12-07 | Vacuum rectifying apparatus with built -in roots vacuum pump |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105688434A (en) * | 2016-03-29 | 2016-06-22 | 天津大学 | In-tower pumping type high vacuum rectification method for separating substances with similar physical properties or thermo-sensitive substances and device |
| CN105695104A (en) * | 2016-03-29 | 2016-06-22 | 天津大学 | Intra-tower pump suction type high vacuum distillation method and device for precise separation of C16-C22 fatty acids |
| CN105833560A (en) * | 2016-03-29 | 2016-08-10 | 天津大学 | In-tower pumping-type high vacuum distillation method and device for separation of heat sensitive oil |
| CN111686470A (en) * | 2020-06-23 | 2020-09-22 | 江西省科学院生物资源研究所 | Device and method for producing specific fingerprint polycosanol |
| CN112322320A (en) * | 2020-10-21 | 2021-02-05 | 恒河材料科技股份有限公司 | Separation equipment for carbon-nine resin oil and use method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498262B (en) * | 2015-12-01 | 2018-04-17 | 欧阳丁一 | A kind of vacuum rectifying apparatus with built-in Roots vaccum pump |
| CN107596717B (en) * | 2017-10-17 | 2021-06-01 | 山东聚恒能源设备有限公司 | Distillation equipment for chemical production |
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| CN105688434A (en) * | 2016-03-29 | 2016-06-22 | 天津大学 | In-tower pumping type high vacuum rectification method for separating substances with similar physical properties or thermo-sensitive substances and device |
| CN105695104A (en) * | 2016-03-29 | 2016-06-22 | 天津大学 | Intra-tower pump suction type high vacuum distillation method and device for precise separation of C16-C22 fatty acids |
| CN105833560A (en) * | 2016-03-29 | 2016-08-10 | 天津大学 | In-tower pumping-type high vacuum distillation method and device for separation of heat sensitive oil |
| CN105833560B (en) * | 2016-03-29 | 2017-11-21 | 天津大学 | Pump suction type high vacuum rectification method and apparatus in a kind of tower for separating thermal sensitivity grease |
| CN105688434B (en) * | 2016-03-29 | 2018-02-09 | 天津大学 | It is a kind of can be used for separation physical property be similar or the tower of heat-sensitive substance in pump suction type high vacuum rectification method and apparatus |
| CN105695104B (en) * | 2016-03-29 | 2023-05-09 | 天津大学 | In-tower pumping type high-vacuum rectification method and device for precisely separating C16-C22 fatty acids |
| CN111686470A (en) * | 2020-06-23 | 2020-09-22 | 江西省科学院生物资源研究所 | Device and method for producing specific fingerprint polycosanol |
| CN112322320A (en) * | 2020-10-21 | 2021-02-05 | 恒河材料科技股份有限公司 | Separation equipment for carbon-nine resin oil and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105498262B (en) | 2018-04-17 |
| CN205269088U (en) | 2016-06-01 |
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