CN202283419U - Device for separating and purifying mono-olefin from C5 - Google Patents
Device for separating and purifying mono-olefin from C5 Download PDFInfo
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- CN202283419U CN202283419U CN2012200317431U CN201220031743U CN202283419U CN 202283419 U CN202283419 U CN 202283419U CN 2012200317431 U CN2012200317431 U CN 2012200317431U CN 201220031743 U CN201220031743 U CN 201220031743U CN 202283419 U CN202283419 U CN 202283419U
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- distillation column
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Abstract
The utility model belongs to the field of separation and extraction devices for C5 and particularly relates to a device for separating and purifying mono-olefin from C5. The device comprises a first extractive distillation column lower section (2), a first extractive distillation column upper section (3), a condenser (4) and a condensate tank (5) which are sequentially connected, wherein one side of the upper part of the first extractive distillation column lower section (2) is connected with a raw material input pipe (1); the top of the first extractive distillation column lower section (2) is connected with the lower part of the first extractive distillation column upper section (3) through a pipeline; the bottom of the first extractive distillation column upper section (3) is connected with the top of the first extractive distillation column lower section (2) through a second reflux pump (10); and an output end of the condensate tank (5) is divided into two ways which are connected with a mono-olefin tank (6) and the top of the first extractive distillation column upper section (3) respectively. The utility model has the advantages that: a small amount of solvent is used, the operating temperature is low, the purity of products is high and the like.
Description
Technical field
A kind of device that is used for carbon five separation purification monoolefines belongs to carbon five separating and extracting device fields, is specifically related to the device that a kind of carbon five separates the purification monoolefines.
Background technology
At present, along with the fast development of ethylene industry, a large amount of carbon five resources of ethylene cracker by-product, and the annual production of China's cracking c_5 has reached nearly 2,000,000 tons, but great majority deep processing and utilization not as yet.Main accessory substance as ethylene unit; Cracking c_5 can be isolated the diene component of multiple high added values such as isoprene; Being the important source material of industries such as synthetic rubber, resin, coating, spices, medicine, agricultural chemicals, is example to produce 1000000 tons ethylene plant per year, about 100,000 tons of by-product cracking c_5; Comprising 17000～19000 tons of isoprene; Each 20000～25000 tons of components such as cyclopentadiene, pentadiene if can carry out high efficiency separation and utilization to these materials, will be received good economic benefit.
But meanwhile, the composition of cracking c_5 is complicated, has two, 30 kind of component that boiling point is close, isolate the material not a duck soups such as isoprene of high-purity, high request.At present, the cracking c_5 isolation technics mainly is divided into two step extraction fractional distillations, but this technology exists: shortcomings such as solvent load is big, operating temperature is high, product purity is low; And, when producing C 5 petroleum resin, often in the pentadiene raw material, mix a certain amount of monoolefine with pentadiene; Like 2-methyl butene-1, amylene-1 etc., in polymerization process as chain-transferring agent, add monoolefine after; Monomer is the concentration decline of pentadiene in polymerisation, and the concentration of chain-transferring agent---monoolefine increases, and product degree of polymerization is reduced; Relative molecular mass reduces, and melt viscosity reduces; Simultaneously, because the effect of chain-transferring agent in time stops chain growth, controlled the excessive increase of relative molecular mass, reached control and improve the effect of Petropols performance, therefore, the product purity of production is not high, can not be widely used.
Summary of the invention
The technical problem that the utility model will solve is: overcome the deficiency of prior art, the device that carbon five separates the purification monoolefine that is used for that a kind of solvent load is few, operating temperature is low, product purity is high is provided.
The utility model solves the technical scheme that its technical problem adopted: this a kind of device that is used for carbon five separation purification monoolefines; It is characterized in that: comprise the first extraction distillation column hypomere, the first extraction distillation column epimere, condenser and condensate tank that order connects; The first extraction distillation column hypomere top, one side connects the raw material input pipe; The top connects pars infrasegmentalis on first extraction distillation column through pipeline; First extraction distillation column epimere bottom connects the first extraction distillation column hypomere top through second reflux pump, and the condensate tank output is divided into two-way, connects the monoolefine jar and the first extraction distillation column epimere top respectively.
The device that boils during described first extraction distillation column hypomere middle part connects, the bottom connects reboiler, and the bottom connects still liquid and adopts pipeline outward through adopting pump outward.Through in boil device and reboiler the material in the first extraction distillation column hypomere is heated.
Connect through first reflux pump between the described first extraction distillation column epimere and the condensate tank.Send the first extraction distillation column epimere top through the lime set after the condenser condenses back to through first reflux pump and realize the utilization that refluxes.
Compared with prior art, the beneficial effect that the utility model had is:
1, solvent load is few, operating temperature is low, product purity is high: effectively control temperature, pressure, solvent refluxing such as compare at crucial technical data in the process of extraction; Extract effective monoolefine component; And guarantee that the monoolefine component that is extracted meets the C 5 petroleum resin raw material standard; Through experiment showed,, can obtain containing the C5 monoolefine more than 35% at the first extraction tower top through the adjusting process parameter.
2, the scope of application is wide, economical and practical: through improving the separating technology of carbon five separators; When extracting rectifying is withdrawn deposit isoprene; By-product can be used for producing the monoolefine component of C 5 petroleum resin, has further improved the comprehensive benefit that carbon five separates purifying plant.
Description of drawings
Fig. 1 is the utility model structure annexation sketch map.
Wherein: 1, raw material input pipe 2, the first extraction distillation column hypomere 3, the first extraction distillation column epimere 4, condenser 5, condensate tank 6, monoolefine jar 7, first reflux pump 8, still liquid adopt outward pipeline 9, outward adopt pump 10, second reflux pump 11, reboiler 12, in the device that boils.
Fig. 1 is the most preferred embodiment of the utility model, further specifies below in conjunction with 1 pair of the utility model of accompanying drawing:
The specific embodiment
With reference to accompanying drawing 1:
This kind is used for the device that carbon five separates the purification monoolefines, mainly by the first extraction distillation column hypomere 2, the first extraction distillation column epimere 3, condenser 4, condensate tank 5, monoolefine jar 6, first reflux pump 7, still liquid adopt outward pipeline 8, outward adopt pump 9, second reflux pump 10, reboiler 11 and in the device 12 that boils connect through pipeline and form.The first extraction distillation column hypomere, 2 tops, one side connects raw material input pipe 1, and the top connects the first extraction distillation column epimere, 3 bottoms through pipeline, the device 12 that boils during the middle part connects, and the bottom connects reboiler 11, and the bottom is adopted pipeline 8 outward through adopting pump 9 connection still liquid outward.The first extraction distillation column epimere, 3 bottoms connect the first extraction distillation column hypomere, 2 tops through second reflux pump 10; Condensate tank 5 outputs are divided into two-way; One the tunnel connects monoolefine jar 6, connects the first extraction distillation column epimere, 3 tops through first reflux pump 7 between another road and the condensate tank 5.
The course of work is following:
The technological principle of the utility model mainly is to carry out extracting rectifying with the thick isoprene material that the DMF solvent is sent pretreatment process here through first extractive distillation column, and extraction wherein can be used for the monoolefine component that C 5 petroleum resin is produced.
At first; Raw material is sent in the first extraction distillation column hypomere 2 by raw material input pipe 1, and the device 12 that boils in reboiler 11 that the material in the first extraction distillation column hypomere 2 connects bottom the tower still and the connection of tower middle part heats, and the material after heating then gets into tower still top and carries out vapor-liquid separation; The still on still top is pressed and is 0.253MpaG (being 2.53kgf/cm2); Temperature is 137.24 ℃, the still liquid after the gas-liquid separation from tower still bottom via outside adopt pump 9 and deliver to and adopt pipeline 8 outside the still liquid, get into stripper through heat exchanger cooling back; At this moment; Tower top pressure in the first extraction distillation column hypomere 2 is 0.151MpaG (being 1.52kgf/cm2), and temperature is 74 ℃, and the isolated steam of cat head gets into the bottom of the tower still of the first extraction distillation column epimere 3 through pipeline.
Then, at this moment, the pressure of the first extraction distillation column epimere, 3 cats head is 0.053MpaG (being 0.53kgf/cm2); Temperature is 43.92 ℃, splendid attire steam in the cat head, and wherein the key component of steam is alkane and monoolefine; Steam gets into the condenser 4 through pipeline from the first extraction distillation column epimere, 3 cats head; Through after the condensation of condenser 4, flow in the condensate tank 5 through pipeline, condensate tank 5 outputs are divided into two-way; Wherein a part of lime set is sent into the first extraction distillation column epimere, 3 cats head by first reflux pump 7 and is refluxed, and remainder is sent into monoolefine jar 6 through pipeline.
In addition; Effectively control temperature, pressure, solvent refluxing such as compare at the key technology data in the process of extraction; Extract effective monoolefine component, and bonding alkene meet the C 5 petroleum resin raw material standard, through the experiment proof; Through the adjusting process parameter, can obtain containing the C5 monoolefine more than 35% at the first extraction tower top.
The above; It only is the preferred embodiment of the utility model; Be not to be the restriction of the utility model being made other form, any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But every the utility model technical scheme content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of the utility model technical scheme according to the technical spirit of the utility model.
Claims (3)
1. one kind is used for the device that carbon five separates the purification monoolefine; It is characterized in that: comprise the first extraction distillation column hypomere (2), the first extraction distillation column epimere (3), condenser (4) and condensate tank (5) that order connects; First extraction distillation column hypomere (2) top, one side connects raw material input pipe (1); The top connects first extraction distillation column epimere (3) bottom through pipeline; The first extraction distillation column epimere (3) bottom connects first extraction distillation column hypomere (2) top through second reflux pump (10), and condensate tank (5) output is divided into two-way, connects the monoolefine jar (6) and first extraction distillation column epimere (3) top respectively.
2. a kind of device that carbon five separates the purification monoolefine that is used for according to claim 1; It is characterized in that: device (12) boils during the described first extraction distillation column hypomere (2) middle part connects; The bottom connects reboiler (11), and the bottom is adopted pipeline (8) outward through adopting pump (9) connection still liquid outward.
3. a kind of device that carbon five separates the purification monoolefines that is used for according to claim 1 and 2 is characterized in that: connect through first reflux pump (7) between the described first extraction distillation column epimere (3) and the condensate tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200317431U CN202283419U (en) | 2012-02-01 | 2012-02-01 | Device for separating and purifying mono-olefin from C5 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200317431U CN202283419U (en) | 2012-02-01 | 2012-02-01 | Device for separating and purifying mono-olefin from C5 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202283419U true CN202283419U (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200317431U Expired - Lifetime CN202283419U (en) | 2012-02-01 | 2012-02-01 | Device for separating and purifying mono-olefin from C5 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202283419U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989188A (en) * | 2012-10-26 | 2013-03-27 | 镇江铁科橡塑制品有限公司 | Exhaust gas recovery and rectification device |
| CN103203167A (en) * | 2012-10-26 | 2013-07-17 | 镇江铁科橡塑制品有限公司 | Exhaust gas recovery method |
-
2012
- 2012-02-01 CN CN2012200317431U patent/CN202283419U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989188A (en) * | 2012-10-26 | 2013-03-27 | 镇江铁科橡塑制品有限公司 | Exhaust gas recovery and rectification device |
| CN103203167A (en) * | 2012-10-26 | 2013-07-17 | 镇江铁科橡塑制品有限公司 | Exhaust gas recovery method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120627 |
|
| CX01 | Expiry of patent term |