CN103977592A - Rectification device comprising two reboilers and method for removing light solvent by using device - Google Patents
Rectification device comprising two reboilers and method for removing light solvent by using device Download PDFInfo
- Publication number
- CN103977592A CN103977592A CN201410239635.7A CN201410239635A CN103977592A CN 103977592 A CN103977592 A CN 103977592A CN 201410239635 A CN201410239635 A CN 201410239635A CN 103977592 A CN103977592 A CN 103977592A
- Authority
- CN
- China
- Prior art keywords
- reboiler
- extraction
- rectifying column
- tower reactor
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention provides a rectification device comprising two reboilers and a method for removing a light solvent by using the device. The device comprises a rectification tower, a circulation reboiler, an extraction reboiler, a heat exchanger, a condenser, a backflow and extraction control system and a product receiving tank, wherein the circulation reboiler and the extraction reboiler are respectively connected with a tower kettle of the rectification tower; an extraction reboiler liquid phase pipe and an extraction reboiler gas phase pipe are arranged between the extraction reboiler and the rectification tower; the raw material heat exchanger and the condenser are arranged between the rectification tower and the condenser; the product receiving tank is connected with the backflow and extraction control system. In the method, the extraction reboiler is judged to be operated or not according to the height of a tower kettle liquid phase temperature gauge and the height of a liquid level gauge in the rectification tower. By virtue of the rectification device, the problem of the incapability of evaporating completely for one time of a conventional reboiler can be solved, and thus the content of light component in extracted materials of the tower kettle of the rectification tower is reduced, so that the yield of products is increased.
Description
Technical field
The present invention relates to technical field of chemical separation, particularly relate to a kind of rectifier unit that comprises two reboilers and remove the method for light naphtha with this device.The rectifier unit that a kind of utilization that concrete is comprises two reboilers, by containing trace and the raw material of the thing that heavily boils on a small quantity, completes further removing of tower reactor material light component by twice evaporation, makes to obtain higher concentration heavily boil equipment and the method for thing in tower reactor.It belongs to the category of chemical separating, is particularly useful for containing trace and the occasion of heavily boil on a small quantity thing material and light component separation of products.
Background technology
In the industry such as chemical industry, pharmacy, conventionally can relate to the occasion of heavily boil thing material and light component separation of products.When the contained thing material that heavily boils is for trace or when a small amount of, need to the thing that heavily boils could be separated through long-time high-temperature heating rectifying, in distillation process due to the heat time lengthen, excess Temperature, on tower reactor reboiler heat exchange tube wall, have the coking of the thing that heavily boils, glutinous wall, even may stop up heat exchanger tube, the efficiency of heating surface of reboiler is reduced.If adopt the technique of single reboiler heating continuous extraction, the material of tower reactor extraction is the heavy constituent containing a large amount of light components, will certainly cause like this loss of light component, reduces separative efficiency.
Based on above problem, it is to extend heat exchanger tube to stop up that the thing of considering how high concentration heavily to be boiled takes out rectifier unit as early as possible and thoroughly, improves the key point of methyl esters yield.
How to found a kind of simple in structure, replacing heat-exchange tube number of times is few, separative efficiency is high new rectifier unit that comprises two reboilers and remove the method for light naphtha with this device, real one of the current important research and development problem that belongs to.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of rectifier unit that comprises two reboilers and removes the method for light naphtha with this device, make that it is simple in structure, replacing heat-exchange tube number of times is few, separative efficiency is high, thus solved existing rectifier unit heavily boil thing flush distillation not thoroughly, heat exchanger tube easily stops up, separative efficiency is low deficiency.
For solving the problems of the technologies described above, the invention provides a kind of rectifier unit that comprises two reboilers, its special character is: comprise rectifying column, circulation reboiler, extraction reboiler, heat exchanger, condenser, reflux-withdrawal control system and product pans, circulation reboiler is connected with the tower reactor of rectifying column respectively with extraction reboiler, between extraction reboiler and rectifying column, be provided with extraction reboiler liquid-phase tube and extraction reboiler gas phase pipe, between described rectifying column and reflux-withdrawal control system, be provided with raw material heat exchanger and condenser, product pans are connected with reflux-withdrawal control system.
As a modification of the present invention, described rectifying column is provided with for detection of the tower reactor liquid level of tower reactor liquid level and takes into account the tower reactor gas phase temperature detector for detection of tower reactor gas phase temperature in tower reactor.
Further, described circulation reboiler is connected with the tower reactor of rectifying column by tower reactor circulating pump.
Further, described rectifying column feeding line is provided with feed rate control system.
Further, described circulation reboiler is forced circulating reboiler, pressure falling-film reboiler, thermosyphon reboiler or a through type reboiler, the polishing of described circulation reboiler heat exchanger tube inwall.
Further, described extraction reboiler is immersion shell and tube reboiler, the polishing of described immersion shell and tube reboiler heat exchanger tube inwall, and heat medium adopts Steam Heating or heat-conducting oil heating.
Further, described extraction reboiler is positive displacement formula reboiler, the polishing of described positive displacement reboiler cylinder inboard wall, and heat medium adopts Steam Heating or heat-conducting oil heating.
Further, described extraction reboiler bottom bobbin carriage is provided with extraction reboiler liquidus temperature mouth and tower reactor extraction pipeline.
The invention still further relates to a kind of method that removes light naphtha with said apparatus, adopt rectifying column, circulation reboiler, extraction reboiler, reflux-withdrawal control system, condenser, product receiving tank and between connecting line etc. jointly remove the light component in tower reactor extraction fraction, its step is as follows:
(1) raw material needs being separated is by feed rate control system control feed rate, and feed stream crosses tower top heat exchanger and overhead vapours carries out heat exchange, in rectifying column middle part charging;
(2) give circulation reboiler supply heating agent, start to heat material in rectifying column, make the steam rising of light component, return to rectifying column by overhead reflux extraction control system control feed back, withdrawing fluid makes the filler complete wetting of full tower;
(3) when tower reactor liquid level in rectifying column is higher than limiting when liquid level, open the valve of extraction reboiler gas phase pipe, make extraction reboiler and tower bottom of rectifying tower pressure balance, then open extraction reboiler liquid-phase tube, in rectifying column, liquid flow in extraction reboiler, give extraction reboiler supply heating agent, the light component that enters into extraction reboiler is continued to heating evaporation, when the liquidus temperature of extraction reboiler reaches after the saturation temperature of the thing mixture that heavily boils, close extraction reboiler liquid-phase tube valve, continue to be heated to extraction reboiler and reach high some temperature, open on tower reactor extraction pipeline valve by outside tower reactor material extraction battery limit (BL).
Further, the feeding manner of described rectifying column is continuous feed mode, and the extraction of tower reactor can adopt continuous extraction mode or extraction at intermittence mode.
The invention has the beneficial effects as follows:
The present invention had both been applicable to atmospheric operation and had also been applicable to decompression and pressurized operation, simple to operate, applied range, and applicability is strong.By two covers being set for the heater of heat is provided to rectifying column, solve the halfway problem of traditional reboiler flush distillation, the light component content in tower bottom of rectifying tower extraction material is reduced greatly, improve the yield of product.Method of the present invention is mainly used in the distillation operation containing the material of trace or a small amount of thing that heavily boils.
Brief description of the drawings
Above-mentioned is only the general introduction of technical solution of the present invention, and in order to better understand technological means of the present invention, below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail.Example, only for explaining the present invention, is not intended to limit scope of the present invention.
Fig. 1 is the structural representation of a kind of rectifier unit that comprises two reboilers of the present invention.
Fig. 2 is the structural representation of the device described in the embodiment of the present invention 2.
Wherein, 1, rectifying column; 2, tower reactor gas phase temperature detector; 3, extraction reboiler gas phase pipe; 4, extraction reboiler liquid-phase tube; 5, extraction reboiler; 6, extraction reboiler liquidus temperature; 7, tower reactor extraction pipeline; 8, tower reactor circulating pump; 9, circulation reboiler; 10, tower reactor liquid level gauge; 11, raw material heat exchanger; 12, condenser; 13, reflux-withdrawal control system; 14, product receiving tank; 15, raw material feeding control system; 16, tower reactor liquid phase temperature monitor.
Detailed description of the invention
Embodiment 1
Shown in Fig. 1, the invention provides a kind of rectifier unit that comprises two reboilers, comprise rectifying column 1, circulation reboiler 9, extraction reboiler 5, heat exchanger 11, condenser 12, reflux-withdrawal control system 13 and product pans 14; Circulation reboiler 9 is connected with the tower reactor of rectifying column 1 respectively with extraction reboiler 5, is provided with extraction reboiler liquid-phase tube 4 and extraction reboiler gas phase pipe 3 between extraction reboiler 5 and rectifying column 1; Between described rectifying column 1 and reflux-withdrawal control system 13, be provided with raw material heat exchanger 11 and condenser 12, product pans 14 are connected with reflux-withdrawal control system 13.
Circulation reboiler 9 can be connected with rectifying column 1 by tower reactor circulating pump 8, and extraction reboiler 5 is directly connected with rectifying column by pipeline.Described circulation reboiler 9 one end are connected with rectifying column 1 tower reactor gas-phase space, and the other end is connected with tower reactor circulating pump 8.
Described rectifying column 1 feed end is provided with feed rate control system 15.
Described rectifying column 1 tower reactor is provided with tower reactor gas phase temperature detector 2, tower reactor liquid thermometer 16 and the tower reactor liquid level gauge 10 for detection of tower reactor liquid level.
Described circulation reboiler 9 can be forced circulating reboiler or pressure falling-film reboiler, and it can be also heat-conducting oil heating that circulation reboiler 9 can adopt Steam Heating; The heat exchanger tube inwall polishing of circulation reboiler, is conducive to prevent from heavily boiling coking or the glutinous wall of material on tube wall, cramming.
Described extraction reboiler 5 is preferably the shell and tube reboiler of immersion; It can be also heat-conducting oil heating that extraction reboiler 5 can adopt Steam Heating; The heat exchanger tube specification of extraction reboiler 5 adopts Large Diameter Pipeline heat exchanger tube, at least selects Ф 32 or Ф 38 heat exchanger tubes and its heat exchanger tube inwall polishing; Extraction reboiler 5 arranges four process stream contact mouths of pipe: process stream liquid-inlet, gas-liquid equilibrium mouth, process stream extraction mouth, liquidus temperature detect mouth.
Described extraction reboiler 5 bottom bobbin carriages are provided with extraction reboiler liquidus temperature mouth 6.
Described extraction reboiler 5 bottom bobbin carriages are also provided with tower reactor extraction pipeline 7, for the extraction of tower reactor qualified material.
Embodiment 2
Shown in Fig. 2, the difference of the present embodiment and above-described embodiment is, described circulation reboiler 9 is directly connected with rectifying column 1 by pipeline, and described circulation reboiler 9 is thermosiphon reboiler or a through type reboiler; Extraction reboiler is positive displacement reboiler, cylinder inboard wall polishing.
The present invention also provides a kind of and adopts the above-mentioned rectifier unit that comprises two reboilers to remove the method for light naphtha, main adopt rectifying column, circulation reboiler, extraction reboiler, reflux-withdrawal control system, condenser, product receiving tank and between connecting line etc. jointly remove the light component in tower reactor extraction fraction, its step is as follows:
(1) raw material needs being separated is by feed rate control system control feed rate, and feed stream crosses tower top heat exchanger and overhead vapours carries out heat exchange, in rectifying column middle part charging;
(2) raw material of described rectifying column charging can be the raw material containing the alcohols of micro-heavy constituent, ester class, organic acid etc.
(3) give circulation reboiler supply heating agent, start to heat material in rectifying column, make the steam rising of light component, return to rectifying column by overhead reflux extraction control system control feed back, withdrawing fluid makes the filler complete wetting of full tower;
(4) when liquid level in rectifying column higher than total liquid level 2/3 time, open the valve of extraction reboiler gas phase pipe, make extraction reboiler and tower bottom of rectifying tower pressure balance, then open extraction reboiler liquid-phase tube, in rectifying column, liquid flow in extraction reboiler, give extraction reboiler supply heating agent, the light component that enters into extraction reboiler is continued to heating evaporation, when the liquidus temperature of extraction reboiler reaches after suitable temperature, close extraction reboiler liquid-phase tube valve, continue to be heated to extraction reboiler and reach high some temperature, open on tower reactor extraction pipeline valve by outside tower reactor material extraction battery limit (BL).
This method that removes light naphtha can also can be for pressurized operation for atmospheric operation, decompression operation; The medium higher for atmospheric boiling point adopts decompression operation, for reducing the operating temperature of tower reactor, in case the pyrolytic of material or coking; The material lower for atmospheric boiling point adopts atmospheric operation.
The handled raw material of described rectificating method is containing trace or the material of the thing that heavily boils on a small quantity.The charging of described rectifying column is continuous feed mode, and the extraction of tower reactor can adopt continuation mode also can adopt intermittently extraction mode.
Embodiment 3
Remove heavy component as example taking fatty acid methyl ester below, the present invention is further explained, the material composition in the present embodiment is mass fraction.
Mixture to be separated is that wherein, the mass fraction of fatty acid methyl ester is 95% containing the fatty acid methyl ester solution of the thing that heavily boils, and other are methyl alcohol and the thing that heavily boils on a small quantity.Raw material is entered to 20 blocks of plates of the rectifying column 1 of 28 numbers of plates with continuous form through feedstock pump pressurization.The inbound traffics that add of controlling raw material by feed rate control system 15 are 1250kg/h.
In the operating condition of rectifying column 1, the operating temperature of tower top is 190 DEG C, and operating pressure is 5Kpa, and the operating temperature of rectifying column 1 tower reactor is 230 DEG C, and extraction reboiler 5 liquidus temperatures are about 245 DEG C ± 10 DEG C.The hot fluid entrance of heat exchanger 11 is connected with the gas phase of rectifying column, and by the steam of the tower top fatty acid methyl ester pre-thermal energy of supplying raw materials, temperature when raw material enters rectifying column 1 is 170 DEG C.
Material carries out the transmission of gas-liquid caloic in rectifying column 1, obtains qualified fatty acid methyl ester product at rectifying column 1 tower top, and flow is 1200kg/h.
Circulation reboiler 9 is for forcing falling-film reboiler, complete circulation by circulating pump 8, the recycle stock of tower reactor circulating pump 8 is the tower reactor material that is rich in fatty acid methyl ester, circulating temperature is 230 DEG C, internal circulating load is 20 tons/h, the intermittently extraction of extraction reboiler bottom material, once, in extraction material, fatty acid methyl ester component content is 5%-10% in extraction in approximately every 8 hours.
Circulation reboiler adopts heat-conducting oil heating, and extraction reboiler adopts heat-conducting oil heating.
Embodiment 4
To remove the de-heavy component of propyl acetate as example, the present invention is further explained below, the material composition in the present embodiment is mass fraction.
Mixture to be separated is that wherein, the mass fraction of propyl acetate is 97.5% containing the propyl acetate solution of the thing that heavily boils, and other are ethanol alcohol and the thing that heavily boils on a small quantity.Raw material is entered to 22 blocks of plates of the rectifying column 1 of 32 numbers of plates with continuous form through feedstock pump pressurization.The inbound traffics that add of controlling raw material by feed rate control system 15 are 2300kg/h.
In the operating condition of rectifying column 1, the operating temperature of tower top is 102 DEG C, and operating pressure is normal pressure, and the operating temperature of rectifying column 1 tower reactor is 125 DEG C, and extraction reboiler 5 liquidus temperatures are about 130 DEG C ± 5 DEG C.The hot fluid entrance of heat exchanger 11 is connected with the gas phase of rectifying column, and by the steam of the tower top propyl acetate pre-thermal energy of supplying raw materials, temperature when raw material enters rectifying column 1 is 90 DEG C.
Material carries out the transmission of gas-liquid caloic in rectifying column 1, obtains qualified propyl acetate product at rectifying column 1 tower top, and flow is 2250kg/h.
Circulation reboiler 9 is thermosyphon reboiler, and recycle stock is the tower reactor material that is rich in propyl acetate, and circulating temperature is 125 DEG C, internal circulating load is 25.8 tons/h, the intermittently extraction of extraction reboiler bottom material, once, in extraction material, propyl acetate component content is controlled in 5% in extraction in approximately every 10 hours.
Circulation reboiler 9 adopts Steam Heating, and extraction reboiler 5 adopts Steam Heating.
The above; it is only preferred embodiment of the present invention; not the present invention is done to any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little any amendment, equivalent variations or modification, all drop in protection scope of the present invention.
Claims (10)
1. a rectifier unit that comprises two reboilers, it is characterized in that: comprise rectifying column, circulation reboiler, extraction reboiler, heat exchanger, condenser, reflux-withdrawal control system and product pans, circulation reboiler is connected with the tower reactor of rectifying column respectively with extraction reboiler, between extraction reboiler and rectifying column, be provided with extraction reboiler liquid-phase tube and extraction reboiler gas phase pipe, between described rectifying column and reflux-withdrawal control system, be provided with raw material heat exchanger and condenser, product pans are connected with reflux-withdrawal control system.
2. a kind of rectifier unit that comprises two reboilers according to claim 1, is characterized in that: described rectifying column is provided with for detection of the tower reactor liquid level of tower reactor liquid level and takes into account the tower reactor gas phase temperature detector for detection of tower reactor gas phase temperature in tower reactor.
3. a kind of rectifier unit that comprises two reboilers according to claim 1, is characterized in that: described circulation reboiler is connected with the tower reactor of rectifying column by tower reactor circulating pump.
4. a kind of rectifier unit that comprises two reboilers according to claim 1, is characterized in that: described rectifying column feeding line is provided with feed rate control system.
5. a kind of rectifier unit that comprises two reboilers according to claim 1, it is characterized in that: described circulation reboiler is forced circulating reboiler, pressure falling-film reboiler, thermosyphon reboiler or a through type reboiler, the polishing of described circulation reboiler heat exchanger tube inwall.
6. a kind of rectifier unit that comprises two reboilers according to claim 1, it is characterized in that: described extraction reboiler is immersion shell and tube reboiler, the polishing of described immersion shell and tube reboiler heat exchanger tube inwall, heat medium adopts Steam Heating or heat-conducting oil heating.
7. a kind of rectifier unit that comprises two reboilers according to claim 1, it is characterized in that: described extraction reboiler is positive displacement formula reboiler, the polishing of described positive displacement reboiler cylinder inboard wall, heat medium adopts Steam Heating or heat-conducting oil heating.
8. a kind of rectifier unit that comprises two reboilers according to claim 1, is characterized in that: described extraction reboiler bottom bobbin carriage is provided with extraction reboiler liquidus temperature mouth and tower reactor extraction pipeline.
9. adopt the rectifier unit that comprises two reboilers described in claim 1-8 any one to remove a method for light naphtha, it is characterized in that: comprise the following steps as follows:
(1) raw material needs being separated is by feed rate control system control feed rate, and feed stream crosses tower top heat exchanger and overhead vapours carries out heat exchange, in rectifying column middle part charging;
(2) give circulation reboiler supply heating agent, start to heat material in rectifying column, make the steam rising of light component, return to rectifying column by overhead reflux extraction control system control feed back, withdrawing fluid makes the filler complete wetting of full tower;
(3) when tower reactor liquid level in rectifying column is higher than limiting when liquid level, open the valve of extraction reboiler gas phase pipe, make extraction reboiler and tower bottom of rectifying tower pressure balance, then open extraction reboiler liquid-phase tube, in rectifying column, liquid flow in extraction reboiler, give extraction reboiler supply heating agent, the light component that enters into extraction reboiler is continued to heating evaporation, when the liquidus temperature of extraction reboiler reaches after the saturation temperature of the thing mixture that heavily boils, close extraction reboiler liquid-phase tube valve, continue to be heated to extraction reboiler and reach high some temperature, open on tower reactor extraction pipeline valve by outside tower reactor material extraction battery limit (BL).
10. the rectifier unit that a kind of employing according to claim 9 comprises two reboilers removes the method for light naphtha, it is characterized in that: the feeding manner of described rectifying column is continuous feed mode, and the extraction of tower reactor adopts continuous extraction mode or extraction at intermittence mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410239635.7A CN103977592B (en) | 2014-05-30 | 2014-05-30 | The method of light naphtha is removed with the rectifier unit comprising two reboiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410239635.7A CN103977592B (en) | 2014-05-30 | 2014-05-30 | The method of light naphtha is removed with the rectifier unit comprising two reboiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103977592A true CN103977592A (en) | 2014-08-13 |
| CN103977592B CN103977592B (en) | 2016-01-13 |
Family
ID=51269906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410239635.7A Active CN103977592B (en) | 2014-05-30 | 2014-05-30 | The method of light naphtha is removed with the rectifier unit comprising two reboiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103977592B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888487A (en) * | 2015-05-25 | 2015-09-09 | 常熟联邦化工股份有限公司 | Strong-heating heat exchanger and distillation system |
| CN108607231A (en) * | 2018-06-26 | 2018-10-02 | 南京工业大学 | A kind of rectifier unit and rectificating method |
| CN109851584A (en) * | 2017-11-30 | 2019-06-07 | 中国石油化工股份有限公司 | The refining methd and device of epoxyalkane |
| CN109912840A (en) * | 2019-01-22 | 2019-06-21 | 上海尚信化工装置科技有限公司 | A kind of polymer purification separation integrated device |
| CN111544915A (en) * | 2020-04-29 | 2020-08-18 | 江苏跃华石化工程有限公司 | Crude phenol rectification experimental device and crude phenol rectification method |
| CN112587948A (en) * | 2020-11-30 | 2021-04-02 | 常州市金坛区维格生物科技有限公司 | Fatty acid methyl ester rectification method |
| EP3719009A4 (en) * | 2017-11-30 | 2021-04-21 | China Petroleum & Chemical Corporation | Method and system for producing epoxyalkane |
| CN114253130A (en) * | 2021-12-21 | 2022-03-29 | 南通大学 | Active-disturbance-rejection control structure and control method for binary rectification process |
| CN114392576A (en) * | 2021-12-25 | 2022-04-26 | 江苏源拓环境科技有限公司 | Horizontal pipe falling film type rectifying device |
| CN115779473A (en) * | 2023-01-06 | 2023-03-14 | 东营科宏化工有限公司 | Distillation falling film evaporation device and use method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239247A (en) * | 2007-11-20 | 2008-08-13 | 天津大学 | Differential pressure low-energy-consumption distillation method and equipment |
| CN101391152A (en) * | 2008-10-22 | 2009-03-25 | 天津大学 | Double-reboiler batch extraction rectification device and method using absorption heat pump |
| CN201329194Y (en) * | 2008-10-31 | 2009-10-21 | 烟台国邦化工机械科技有限公司 | Heterogeneous azeotropic batch distillation device |
| CN203861950U (en) * | 2014-05-30 | 2014-10-08 | 烟台国邦化工机械科技有限公司 | Rectification device including double reboilers |
-
2014
- 2014-05-30 CN CN201410239635.7A patent/CN103977592B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239247A (en) * | 2007-11-20 | 2008-08-13 | 天津大学 | Differential pressure low-energy-consumption distillation method and equipment |
| CN101391152A (en) * | 2008-10-22 | 2009-03-25 | 天津大学 | Double-reboiler batch extraction rectification device and method using absorption heat pump |
| CN201329194Y (en) * | 2008-10-31 | 2009-10-21 | 烟台国邦化工机械科技有限公司 | Heterogeneous azeotropic batch distillation device |
| CN203861950U (en) * | 2014-05-30 | 2014-10-08 | 烟台国邦化工机械科技有限公司 | Rectification device including double reboilers |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104888487A (en) * | 2015-05-25 | 2015-09-09 | 常熟联邦化工股份有限公司 | Strong-heating heat exchanger and distillation system |
| EP3719009A4 (en) * | 2017-11-30 | 2021-04-21 | China Petroleum & Chemical Corporation | Method and system for producing epoxyalkane |
| CN109851584A (en) * | 2017-11-30 | 2019-06-07 | 中国石油化工股份有限公司 | The refining methd and device of epoxyalkane |
| CN109851584B (en) * | 2017-11-30 | 2021-05-11 | 中国石油化工股份有限公司 | Method and apparatus for purifying alkylene oxide |
| CN108607231A (en) * | 2018-06-26 | 2018-10-02 | 南京工业大学 | A kind of rectifier unit and rectificating method |
| CN108607231B (en) * | 2018-06-26 | 2023-11-10 | 南京工业大学 | Rectifying device and rectifying method |
| CN109912840A (en) * | 2019-01-22 | 2019-06-21 | 上海尚信化工装置科技有限公司 | A kind of polymer purification separation integrated device |
| CN109912840B (en) * | 2019-01-22 | 2023-05-26 | 上海迪化科技股份有限公司 | Polymer purification and separation integrated device |
| CN111544915A (en) * | 2020-04-29 | 2020-08-18 | 江苏跃华石化工程有限公司 | Crude phenol rectification experimental device and crude phenol rectification method |
| CN112587948A (en) * | 2020-11-30 | 2021-04-02 | 常州市金坛区维格生物科技有限公司 | Fatty acid methyl ester rectification method |
| CN114253130A (en) * | 2021-12-21 | 2022-03-29 | 南通大学 | Active-disturbance-rejection control structure and control method for binary rectification process |
| CN114253130B (en) * | 2021-12-21 | 2022-12-16 | 南通大学 | Active disturbance rejection control structure and control method for binary rectification process |
| CN114392576A (en) * | 2021-12-25 | 2022-04-26 | 江苏源拓环境科技有限公司 | Horizontal pipe falling film type rectifying device |
| CN115779473A (en) * | 2023-01-06 | 2023-03-14 | 东营科宏化工有限公司 | Distillation falling film evaporation device and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103977592B (en) | 2016-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103977592B (en) | The method of light naphtha is removed with the rectifier unit comprising two reboiler | |
| CN103566613B (en) | A kind of low-concentration organic solvent aqueous solution reclaims heat pump distillation apparatus and technique | |
| CN202214306U (en) | Process device for preparing ethanol by utilizing acetic acid | |
| CN203710716U (en) | Device for improving recycling rate of alcohol ketone components in refining process of cyclohexanone | |
| CN102580338A (en) | Device and method for continuously rectifying 3-chloropropyl triethoxysilane | |
| CN203861950U (en) | Rectification device including double reboilers | |
| CN210905022U (en) | Experimental apparatus for refining absolute ethyl alcohol | |
| CN201578872U (en) | Multi-strand lateral line discharging combined type rectifying apparatus | |
| US20070137997A1 (en) | Ethanol continuous flow boiler | |
| CN212818204U (en) | Extractant recovery unit | |
| CN103611328B (en) | Process for extracting naphthalene by continuously rectifying heavy benzol | |
| CN205649873U (en) | Refining plant of trimellitic acid acid anhydride | |
| CN101961562A (en) | Rectification device | |
| CN204767516U (en) | Rectification forced circulation heating device | |
| CN102600627B (en) | Cyclone-flash cloth-film-reboiling-type heat-pipe distiller | |
| CN105176697A (en) | Continuous esterification column apparatus for preparing biodiesel from waste fat and oil | |
| CN106582053B (en) | The process and device of the tower methanol distillation column by-product ethyl alcohol of partition | |
| CN201832433U (en) | Methanol and ethanol extracting equipment | |
| CN104548644A (en) | Distillation experimental device for supported ionic liquid catalytic reaction | |
| CN201279398Y (en) | Rectifier | |
| CN210813975U (en) | Double ethyl methyl ester efficient energy-saving distillation device | |
| CN205115337U (en) | Low power consuming is by device of methyl alcohol preparation aerosol dimethyl ether | |
| CN203075685U (en) | Vacuum distillation device | |
| CN208791523U (en) | A kind of purification alpha-pyrrolidone steams the device of slag | |
| CN201962221U (en) | Improved alcohol recovering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |