CN204840984U - Rectifying device - Google Patents
Rectifying device Download PDFInfo
- Publication number
- CN204840984U CN204840984U CN201520597985.0U CN201520597985U CN204840984U CN 204840984 U CN204840984 U CN 204840984U CN 201520597985 U CN201520597985 U CN 201520597985U CN 204840984 U CN204840984 U CN 204840984U
- Authority
- CN
- China
- Prior art keywords
- packed tower
- pipe bundle
- rectifying device
- reflux ratio
- bundle condenser
- 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.)
- Expired - Fee Related
Links
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a rectifying device, including stills, filled tower, pipe bundle condenser, preceding fractionation jar, finished product jar and reflux ratio regulator, stills and filled tower, pipe bundle condenser connect gradually, and pipe bundle condenser's exit linkage has a tee bend, and two exports are connected with preceding fractionation jar and finished product jar respectively, and the preceding pipeline that distillates fractionally jar and the export of finished product jar joins the back and is connected with the reflux ratio regulator, and the export and the filled tower of reflux ratio regulator are connected. This equipment structure is compact, and the order is reasonable, adopts circulating rectification method, carries out manifold cycles rectification with the product of low -purity, realizes finally that rectification purity is high, the yield is high, and the energy consumption is low, the few purpose of the remaining volume of cauldron.
Description
Technical field
The utility model relates to a kind of rectifying device.
Background technology
3-methylamino-1,2-propanediol is as the important intermediate of producing Iopromide, and the height of its purity, amount of impurities and content directly affects the purity of Iopromide and the relevant bad reaction of intravenous injection contrast preparation.If 3-methylamino-1, the impurity content exceeding index such as polyglycerol in 2-propane diols, may occur after intravenous injection: shiver, generate heat, perspire, have a headache, dizzy, pale complexion, weakness, sensation of asphyxia, breathe, blood pressure raises or reduction, nettle rash, all kinds of fash, oedema, spasm, shake, sneeze and the symptom such as to shed tears, severe reaction person even threat to life.The synthetic method of existing 3-methylamino-1,2-propanediol mainly with epoxychloropropane, glycerin chlorohydrin, monomethylamine aqueous solution be raw material, adopt tank reactor, lower pressure under Batch Process.No matter adopt which kind of production technology, finally all will through rectification working process.The selection of rectifying device, the control of process conditions affect very large on product quality, yield etc.Existing 3-methylamino-1, the rectifying of 2-propane diols adopts simple rectifying mostly, the deficiencies such as energy consumption is high, the operating time is long, product purity is low, rectifying still residual volume is many, therefore, design, use a kind of distillation equipment, for 3-methylamino-1, the purity of 2-propane diols, yield, reduce energy consumption, reduce still residual volume, there is important economic implications.
Utility model content
The utility model, in order to solve the problem, proposes a kind of rectifying device, and this equipment adopts circulating rectificating method, and repeatedly circulate the product of low-purity rectifying, finally realizes that rectifying purity is high, yield is high, and energy consumption is low, the object that still residual volume is few.
To achieve these goals, the utility model adopts following technical scheme:
A kind of rectifying device, comprises distillation still, packed tower, pipe bundle condenser, front fractionating tank, finished pot and reflux ratio adjuster; Distillation still is connected successively with packed tower, pipe bundle condenser, the outlet of pipe bundle condenser is connected with a threeway, two outlets are connected with front fractionating tank and finished pot respectively, be connected with reflux ratio adjuster after the ducts converge that front fractionating tank and finished pot export, the outlet of reflux ratio adjuster is connected with packed tower.This compact equipment, order rationally, adequately achieves the object of circulation rectifying.
Described packed tower is divided into the first packed tower and the second packed tower, and the first packed tower is connected successively with the second packed tower, and stainless steel cloth filler is all equipped with in inside, wherein the second packed tower is also provided with the backflow mouth of pipe.Stack the filler of ormal weight in packed tower, enhanced the heat transfer of vapour-liquid two-phase, mass transfer, ensured that the gas purity leaving packed tower is high.
The height that in described first packed tower, the height of stainless steel cloth filler accounts for stainless steel cloth filler in the 1/2, second packed tower of tower height accounts for 1/3 of tower height.Add the stainless steel cloth filler of different volumes according to the distilation steps difference at place, both ensure that heat transfer, mass transfer effect, and in turn ensure that distillation efficiency.
In described distillation still, agitator is installed.Both enhance radial mixing of materials during stirring, enhanced again the heat and mass transfer of radial material, enhance mixing of materials effect.
Pipeline between described packed tower and pipe bundle condenser is provided with temperature measuring gauge.Judge production status by the variations in temperature of temperature measuring gauge on gas phase pipeline, particularly judge product purity, convenient and swift.
Pipeline between described pipe bundle condenser and threeway is provided with pipeline and looks cup.The changes in flow rate situation judgement rectifying terminal that condensate liquid observed by cup is looked by pipeline.
Entrance and the exit of described front fractionating tank and finished pot are all provided with control valve.Looked the break-make of the timely switch valve of cup by observation temperature measuring gauge and pipeline, and regulate reflux ratio adjuster to determine that suitable reflux ratio is to obtain highly purified product in time.
The beneficial effects of the utility model are:
(1) filler of the utility model owing to stacking ormal weight in packed tower, enhances the heat transfer of vapour-liquid two-phase, mass transfer, and the gas purity leaving packed tower is very high, reaches more than 99.88% (GC), improves more than 0.3% than existing technique;
(2) the utility model arranges reflux ratio adjuster, reasonable adjusting reflux ratio, both ensure that the purity of product, and in turn ensure that product quality;
(3) the utility model arranges temperature measuring gauge on the gas phase pipeline of packed tower and pipe bundle condenser, except producing except a temperature detecting point as normal, once reflux ratio adjuster breaks down, production status can be judged by the variations in temperature of temperature measuring gauge on gas phase pipeline, particularly product purity judges, act on great, decrease analytical test number of times, alleviate middle control workload.
(4) distillation still of belt stirrer is used, both radial mixing of materials had been enhanced during stirring, enhance again the heat and mass transfer of radial material, enhance mixing of materials effect, vaporizing liquid speed is fast, and the heated liquid time is short, and gas time of staying in still is short, avoid the coking of material, polymerization, still residual reduces; The product obtained is colourless liquid, and purity is high
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Wherein, 1, distillation still, 2, packed tower, 3, temperature measuring gauge, 4, pipe bundle condenser, 5, pipeline looks cup, 6, front fractionating tank, 7, finished pot, 8, reflux ratio adjuster, 9, vacuum line, 21, the first packed tower, the 22, second packed tower, 221, backflow the mouth of pipe, 222, packed tower outlet, 41, water inlet, 42, delivery port.
Detailed description of the invention:
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1, a kind of rectifying device, comprises the distillation still 1 that inside is provided with agitator, had both enhanced radial mixing of materials, and enhanced again the heat and mass transfer of radial material, and enhanced mixing of materials effect during stirring.The inner packed tower 2 that stainless steel cloth filler is all housed, packed tower 2 is divided into the first packed tower 21 and the second packed tower 22, first packed tower 21 to be connected successively with the second packed tower 22, wherein the second packed tower 22 is also provided with the backflow mouth of pipe 221.Stacked the filler of ormal weight in packed tower 2, the height that in the first packed tower 21, the height of stainless steel cloth filler accounts for stainless steel cloth filler in the 1/2, second packed tower 22 of tower height accounts for 1/3 of tower height.Add the stainless steel cloth filler of different volumes according to the distilation steps difference at place, both ensure that heat transfer, mass transfer effect, and in turn ensure that distillation efficiency.Enhance the heat transfer of vapour-liquid two-phase, mass transfer, ensure that the gas purity leaving packed tower 2 is high.Pipe bundle condenser 4, front fractionating tank 6, finished pot 7 and reflux ratio adjuster 8; Distillation still 1 is connected successively with packed tower, pipe bundle condenser 4, and the pipeline between packed tower outlet 222 and pipe bundle condenser 4 is provided with temperature measuring gauge 3.Judge production status by the variations in temperature of temperature measuring gauge 3 on gas phase pipeline, particularly judge product purity, convenient and swift.The outlet of pipe bundle condenser 4 is connected with a threeway, the pipeline between pipe bundle condenser 4 and threeway is provided with pipeline and looks cup 5.The changes in flow rate situation of observing condensate liquid depending on cup 5 by pipeline judges rectifying terminal.Two outlets are connected with front fractionating tank 6 and finished pot 7 respectively, and entrance and the exit of front fractionating tank 6 and finished pot 7 are all provided with control valve, and fractionating tank is all connected with vacuum system by vacuum line 9 with finished pot 7.Looked the break-make of the timely switch valve of cup 5 by observation temperature measuring gauge 3 and pipeline, and regulate reflux ratio adjuster 8 to determine that suitable reflux ratio is to obtain highly purified product in time.Be connected with reflux ratio adjuster 8 after the ducts converge that front fractionating tank 6 and finished pot 7 export, the outlet of reflux ratio adjuster 8 is connected with the backflow mouth of pipe 221 of packed tower.This compact equipment, order rationally, adequately achieves the object of circulation rectifying.
During practical operation, under vacuum, the stirring of material by agitator in distillation still 1 fully mixes, 3-methylamino-1, 2-propanediol vapor enters packed tower from distillation still 1, the 3-methylamino-1 of liquid phase in packed tower, 2-propanediol vapor conducts heat, mass transfer, make the gas purity leaving packed tower very high, gas arrives pipe bundle condenser 4 by the road, cooling water on condenser flows at water inlet 41, delivery port 42 flows out, with steam reverse movement, steam is cooled, after enter front-end volatiles tank or finished pot 7 through condenser pipe, the changes in flow rate situation of observing condensate liquid depending on cup 5 from pipeline judges rectifying terminal, according to vacuum and temperature, front-end volatiles are put into front-end volatiles tank or finished pot 7, if observe gas phase temperature and pipeline by temperature measuring gauge 3 to observe condensate liquid depending on cup 5 and meet finished product requirement, the control valve of fractionating tank 6 entrance before then closing, condensate liquid is made to enter finished pot 7, if condensate liquid does not meet finished product requirement, the control valve of then closing finished pot 7 entrance opens the control valve of front fractionating tank 6 entrance, condensate liquid is made to enter front fractionating tank 6.Then continue to make condensate liquid flow into packed tower, until obtain the product needing purity by controlling reflux ratio adjuster 8.
By reference to the accompanying drawings detailed description of the invention of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (7)
1. a rectifying device, is characterized in that: comprise distillation still, packed tower, pipe bundle condenser, front fractionating tank, finished pot and reflux ratio adjuster; Distillation still is connected successively with packed tower, pipe bundle condenser, the outlet of pipe bundle condenser is connected with a threeway, two outlets are connected with front fractionating tank and finished pot respectively, be connected with reflux ratio adjuster after the ducts converge that front fractionating tank and finished pot export, the outlet of reflux ratio adjuster is connected with packed tower.
2. a kind of rectifying device as claimed in claim 1, it is characterized in that: described packed tower is divided into the first packed tower and the second packed tower, first packed tower is connected successively with the second packed tower, and stainless steel cloth filler is all equipped with in inside, wherein the second packed tower is also provided with the backflow mouth of pipe.
3. a kind of rectifying device as claimed in claim 2, is characterized in that: in described first packed tower the height of stainless steel cloth filler account for stainless steel cloth filler in the 1/2, second packed tower of tower height height account for 1/3 of tower height.
4. a kind of rectifying device as claimed in claim 1, is characterized in that: be provided with agitator in described distillation still.
5. a kind of rectifying device as claimed in claim 1, is characterized in that: the pipeline between described packed tower and pipe bundle condenser is provided with temperature measuring gauge.
6. a kind of rectifying device as claimed in claim 1, is characterized in that: the pipeline between described pipe bundle condenser and threeway is provided with pipeline and looks cup.
7. a kind of rectifying device as claimed in claim 1, is characterized in that: entrance and the exit of described front fractionating tank and finished pot are all provided with control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520597985.0U CN204840984U (en) | 2015-08-10 | 2015-08-10 | Rectifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520597985.0U CN204840984U (en) | 2015-08-10 | 2015-08-10 | Rectifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204840984U true CN204840984U (en) | 2015-12-09 |
Family
ID=54731583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520597985.0U Expired - Fee Related CN204840984U (en) | 2015-08-10 | 2015-08-10 | Rectifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204840984U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597654A (en) * | 2015-12-21 | 2016-05-25 | 浙江衢州正邦有机硅有限公司 | Apparatus and method to improve polymethyl triethoxy silane reaction yield |
| CN114392575A (en) * | 2021-12-24 | 2022-04-26 | 桐昆集团浙江恒超化纤有限公司 | Production equipment and production process of superfine comfortable fiber |
-
2015
- 2015-08-10 CN CN201520597985.0U patent/CN204840984U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597654A (en) * | 2015-12-21 | 2016-05-25 | 浙江衢州正邦有机硅有限公司 | Apparatus and method to improve polymethyl triethoxy silane reaction yield |
| CN105597654B (en) * | 2015-12-21 | 2018-11-09 | 浙江衢州正邦有机硅有限公司 | A kind of device and method improving poly- methyltriethoxysilane reaction yield |
| CN114392575A (en) * | 2021-12-24 | 2022-04-26 | 桐昆集团浙江恒超化纤有限公司 | Production equipment and production process of superfine comfortable fiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204840984U (en) | Rectifying device | |
| CN105964008B (en) | A kind of high-purity vinyl acetate piece-rate system | |
| CN105344124B (en) | Double smart tower quadruple effect top grade alcohol distillation method and apparatus for producing alcohol | |
| CN103980081A (en) | Rectification method and apparatus for propylene and propane separation | |
| CN203196362U (en) | High-efficient alcohol recovery tower | |
| CN208182895U (en) | A kind of tetrahydrofuran fractional order reaction separator | |
| CN204529707U (en) | The refining plant of product foreign matter content is reduced in a kind of caprolactam production process | |
| CN206621817U (en) | A kind of energy-conserving and environment-protective chlorophenesic acid continuous rectification system | |
| CN212166564U (en) | Chemical industry rectifier unit | |
| CN206168416U (en) | Purification device of o dichlorobenzene mother liquor during solid purple RL produces forever | |
| CN110157586A (en) | White wine fractionating device and fractional method | |
| CN206881185U (en) | A kind of rectification experimental apparatus | |
| CN214680164U (en) | Automatic washing device for chloralkane | |
| CN205576087U (en) | Cooling device in wine processing | |
| CN201750964U (en) | Glycerin distillation device | |
| CN107261540A (en) | A kind of cyclohexanol Mead-Bauer recovery system | |
| CN205435021U (en) | System is used multipurposely to synthetic gas system ethylene glycol technology rectifying column overhead gas heat | |
| CN105169734B (en) | Vacuum rectifying apparatus and its rectificating method | |
| CN206980148U (en) | A kind of cyclohexanol Mead-Bauer recovery system | |
| CN210314061U (en) | Rectification and purification device for synthesizing dimethyl oxalate by carbonylation of coal-made ethylene glycol | |
| CN206915798U (en) | A kind of multitower continuous still preparation system of low deuterium-oxide | |
| CN107583300B (en) | A kind of hypergravity MVR heat pump rectification system | |
| CN209081770U (en) | Energy-saving type alkyl chloride rectifier unit | |
| CN209685643U (en) | New heat energy utilization system in a kind of cyclohexanol production | |
| CN106187765B (en) | Acetone, water separation equipment in a kind of two tower of rectifying removing vinyl acetate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20190810 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |