CN106693431A - Novel heptane precise fractionation device - Google Patents
Novel heptane precise fractionation device Download PDFInfo
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- CN106693431A CN106693431A CN201710159085.1A CN201710159085A CN106693431A CN 106693431 A CN106693431 A CN 106693431A CN 201710159085 A CN201710159085 A CN 201710159085A CN 106693431 A CN106693431 A CN 106693431A
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- heptane
- tower
- valve
- distillation apparatus
- tongue type
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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
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/04—Purification; Separation; Use of additives by distillation
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- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention relates to a novel heptane precise fractionation device, which comprises a heptane precise fractionation tower, a tower top heat exchange and backflow system and a tower bottom reboiling and heat exchange system, wherein the heptane precise fractionation tower consists of a fractionation section, a tongue-shaped floating valve tower plate unit and a stripping section tongue-shaped floating valve tower plate unit. The novel heptane precise fractionation device provided by the invention has the advantages that the quantity of the novel tongue-shaped floating valve tower plates is great; the separation effect is good; the heptane separation purity is favorably improved; the raw materials realize sufficient heat exchange through the tower top heat exchange and backflow system and the tower bottom reboiling and heat exchange system, so that the heat energy of the device is sufficiently utilized.
Description
Technical field
The present invention relates to the new heptane precise distillation apparatus of petroleum chemical industry, belong to petrochemical equipment technology neck
Domain.
Background technology
In petrochemical industry production, the liquid that oil product material or solvent crude product for producing are made up of some components more
Body mixture, it is necessary to carry out a certain degree of separation, with the purpose for reaching purification or reclaiming useful constituent, liquid mixture point
It is many from method, such as filter, evaporation, distillation, be fractionated, rectifying and special extract rectification.Distillation technology is using most in chemical field
It is also simultaneously energy consumption and investment part higher in industrial process, in oil though there is many advantages for extensive unit is operated
In the industries such as chemical industry, its energy consumption accounts for more than half of overall process total energy consumption.The energy consumption of distillation process is concentrated mainly on rectifying column
Heater is boiled again.Rectifying column includes the column plate unit in tower body and tower body mostly（Including column plate, downflow weir, downspout）,
The column plate generally existing gas-liquid contact effect of existing rectifying column is poor, column plate impact resistance is low, column plate service life is short, column plate is empty
Between utilization rate is low and air-flow rise resistance it is big the drawbacks of.
With the fast development of the relevant industries such as oil, chemical industry, medicine, electronics, the demand to normal heptane will increase year by year
Plus.Because the development of science and technology, experimental study problem are on the increase, existing high-purity chromatorgaphy reagent is mainly by import, state
Though producing high purity reagent has production, quality is unstable, and can not meet the demand of scientific and technological high speed development, therefore, study high-purity
The preparation method of organic solvent, has important practical significance to China's development in science and technology, and alternative import.Heptane is primarily present
In 80 100 DEG C of petroleum distillates, reforming raffinate oil and No. 120 solvent naphthas.It is industrial at present main using precision fractionation method
Production normal heptane, with conventional distillation it is difficult to be isolated；Precise distillation high energy consumption is used, production cost is higher, and yield is relatively low, and very
Seldom to high-purity normal heptane；Special extract rectification method is used, relatively costly, process is complicated.
Chinese patent CN100575322C is using the technique of skellysolve C abstraction with combined production of octane product by pressure swing adsorption, equipment
Investment is big, high energy consumption, complex process.Chinese patent CN105085141A is first to be separated using rectifying, then carries out extractant extracting
Rectification process, although obtain high-purity normal heptane, but complex process, equipment investment is big, high energy consumption.
The content of the invention
The purpose of the present invention is exactly the defect for solving prior art presence, there is provided new heptane precise distillation apparatus.
Concrete technical scheme of the invention is：
1st, new heptane precise distillation apparatus, including heptane precision fractionation tower, tower top heat exchange and return-flow system and bottom of towe are boiled again
And heat-exchange system, it is characterised in that：Heptane precision fractionation tower top passes through top gaseous phase pipeline valve and wet air cooler, tower
Top reflux line and control valve and the connection of heptane precision fractionation tower；Heptane precision fractionation tower bottom is exchanged heat by materials at bottom of tower and followed
Endless tube road, bottom of towe delivery pump and pipeline valve and heptane precision fractionation tower are connected.
2nd, according to the new heptane precise distillation apparatus of kind described in claim 1, it is characterised in that：Heptane precision fractionation tower
It is made up of feedstock pipeline and valve, rectifying section and tongue type valve plate unit, stripping section tongue type valve plate unit.
3rd, according to the new heptane precise distillation apparatus described in claim 1, it is characterised in that：The tongue type float valve of rectifying section
The number of plates is 40-80, and the plate spacing of tongue type valve plate is 350mm-500mm.
4th, according to the new heptane precise distillation apparatus described in claim 1, it is characterised in that：The tongue type float valve of stripping section
The number of plates is 40-80, and the plate spacing of tongue type valve plate is 400mm-600mm.
5th, according to the new heptane precise distillation apparatus described in claim 1, it is characterised in that：Tower top heat exchange and backflow
System include feed preheater, gas phase pipeline valve and wet air cooler, overhead reflux pipeline and valve, heptane return tank and
Overhead reflux pump and ducts valve, electric instrument equipment.
6th, according to the new heptane precise distillation apparatus described in claim 1, it is characterised in that：Bottom of towe is boiled and heat exchange again
System include reboiler heating agent inlet and outlet piping, bottom reboiler, raw material heat exchanger and bottom of towe delivery pump and ducts valve,
Electric instrument equipment.
Using the technical scheme of such scheme, the present invention has the advantages that：
1st, the wet air cooler of tower top heat exchange and return-flow system have invest small, good cooling results, the big advantage of adjustable range,
Heptane precise distillation apparatus various process parameters can be adjusted according to raw material Parameters variation.
2nd, the feed preheater and bottom of towe of tower top heat exchange and return-flow system boil again and heat-exchange system heat exchanger with it is former
Material fully carries out heat exchange, the waste heat of heptane precise distillation apparatus obtained fully reclaiming, utilized, and substantially increases energy utilization
Effect, energy-saving effect is notable.
3rd, rectifying section tower tongue type valve plate is 40-80, and the plate spacing of column plate is 350mm-400mm；Stripping section tower tongue type
Valve plate is 40-80, and the plate spacing of column plate is 400mm-500mm；Rectifying section, the stripping section number of plates are considerably increased, is reduced
The plate spacing of rectifying section；On the one hand have equipment investment small, easily install, on the other hand improve separating effect, make tower top
Capacity of returns reduction by more than 10%.
Brief description of the drawings
Fig. 1 is new heptane precise distillation apparatus process chart of the invention；
In Fig. 1：1st, bottom of towe delivery pump and pipeline valve；2nd, bottom reboiler；3rd, materials at bottom of tower pipeline and valve；4th, reboiler heat
Matchmaker's inlet and outlet piping valve；5th, heptane product conveyance conduit and valve；6th, overhead reflux pump and reflux line valve；7th, heptane backflow
Tank；8th, overhead reflux pipeline and control valve；9th, gas phase pipeline valve and wet air cooler；10th, feed preheater；11st, raw material
Entrance；12nd, rectifying section and tongue type valve plate；13rd, feed pipe and valve；14th, raw material heat exchanger；15th, stripping section and tongue type
Valve plate；16th, heptane precision fractionation tower；17th, material-heat-exchanging circulating line.
Specific embodiment
The present invention is described in further details below in conjunction with accompanying drawing.
Embodiment
With reference to accompanying drawing 1, new heptane precise distillation apparatus, including heptane precision fractionation tower（16）, tower top heat exchange and return
Streaming system and bottom of towe boiling hot exchange system again.
Heptane precision fractionation tower（16）Top passes through top gaseous phase pipeline valve and wet air cooler（9）, overhead reflux pipe
Road and control valve（8）With heptane precision fractionation tower（16）Connection；Heptane precision fractionation tower（16）Bottom is changed by materials at bottom of tower
Thermal cycle pipeline（17）, bottom of towe delivery pump and pipeline valve（1）With heptane precision fractionation tower（16）Connection.
Heptane precision fractionation tower is by feedstock pipeline and valve（13）, rectifying section and tongue type valve plate unit（12）、
Stripping section tongue type valve plate unit（15）Composition.
Heptane precision fractionation tower（16）A diameter of 1200mm of rectifying section, tongue type valve plate number is between 60, the plate of column plate
Away from being 380mm.
Heptane precision fractionation tower（16）A diameter of 1200mm of stripping section, tongue type valve plate number is between 50, the plate of column plate
Away from being 450mm.
Tower top heat exchange and return-flow system include feed preheater（10）, gas phase pipeline valve and wet air cooler（9）, tower
Top reflux line and control valve（8）, heptane return tank（7）With heptane product conveyance conduit valve（5）And supporting electric instrument equipment.
Bottom of towe is boiled again and heat-exchange system includes reboiler heating agent inlet and outlet piping（4）, bottom reboiler（2）, raw material heat exchange
Device（14）With bottom of towe delivery pump valve pipe（1）And supporting electric instrument equipment.
With reference to accompanying drawing 1, the new heptane precise distillation apparatus course of work of the invention is：
The heptane raw material of light component is separated from feed(raw material)inlet（11）Respectively with feed preheater（10）, raw material heat exchanger（14）Change
Heat, then by feed pipe and valve（13）Into heptane precision fractionation tower（16）Carry out rectifying separation.
Heptane precision fractionation tower（16）The gas phase heptane material of interior separation passes through rectifying section and tongue type valve plate unit
（12）Reach heptane precision fractionation tower（16）Tower top, by gas phase pipeline valve (9), feed preheater（10）, gas phase pipeline valve
Door and wet air cooler (9) condensation liquefaction, into heptane return tank (7)；A liquid phase heptane part for condensation passes through overhead reflux
Pump（6）, overhead reflux pipeline and control valve (8) return to the circulation rectifying of heptane precise distillation apparatus tower top, another part liquid phase
Heptane passes through heptane product conveyance conduit valve（5）Reach heptane products pot.
Heptane precision fractionation tower（16）The liquid phase material of interior separation is reached by stripping section and tongue type valve plate unit (15)
To heptane precision fractionation tower（16）Bottom of towe；A part of materials at bottom of tower of bottom of towe passes through and raw material heat exchanger（14）Heat exchange, by tower
Bottom delivery pump and pipeline valve（1）Into materials at bottom of tower pipeline and valve（3）Go out device；Another part liquid phase material of bottom of towe leads to
Cross material-heat-exchanging circulating line（17）With bottom reboiler（2）Reboiler heating agent inlet and outlet piping（4）Circulation carries out heat with heating agent
Exchange, be new heptane precise distillation apparatus conveying heat energy.
For those skilled in the art, under the premise without departing from the principles of the invention, it is possible to right
Specific size, or partial structurtes make some improvements and modifications, and these improvements and modifications also should be regarded as protection model of the invention
Enclose.
Claims (6)
1. new heptane precise distillation apparatus, including heptane precision fractionation tower, tower top heat exchange and return-flow system and bottom of towe are boiled again
And heat-exchange system, it is characterised in that：Heptane precision fractionation tower top passes through top gaseous phase pipeline valve and wet air cooler, tower
Top reflux line and control valve and the connection of heptane precision fractionation tower；Heptane precision fractionation tower bottom is exchanged heat by materials at bottom of tower and followed
Endless tube road, bottom of towe delivery pump and pipeline valve and heptane precision fractionation tower are connected.
2. according to the new heptane precise distillation apparatus of kind described in claim 1, it is characterised in that：Heptane precision fractionation tower is by original
Material feed pipe and valve, rectifying section and tongue type valve plate unit, stripping section tongue type valve plate unit composition.
3. according to the new heptane precise distillation apparatus described in claim 1, it is characterised in that：The tongue type valve plate of rectifying section
Number is 40-80, and the plate spacing of tongue type valve plate is 350mm-500mm.
4. according to the new heptane precise distillation apparatus described in claim 1, it is characterised in that：The tongue type valve plate of stripping section
Number is 40-80, and the plate spacing of tongue type valve plate is 400mm-600mm.
5. according to the new heptane precise distillation apparatus described in claim 1, it is characterised in that：Tower top heat exchange and return-flow system
Including feed preheater, gas phase pipeline valve and wet air cooler, overhead reflux pipeline and valve, heptane return tank and tower top
Reflux pump and ducts valve, electric instrument equipment.
6. according to the new heptane precise distillation apparatus described in claim 1, it is characterised in that：Bottom of towe is boiled and heat-exchange system again
Including reboiler heating agent inlet and outlet piping, bottom reboiler, raw material heat exchanger and bottom of towe delivery pump and ducts valve, electric instrument
Equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710159085.1A CN106693431A (en) | 2017-03-17 | 2017-03-17 | Novel heptane precise fractionation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710159085.1A CN106693431A (en) | 2017-03-17 | 2017-03-17 | Novel heptane precise fractionation device |
Publications (1)
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| CN106693431A true CN106693431A (en) | 2017-05-24 |
Family
ID=58886762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710159085.1A Pending CN106693431A (en) | 2017-03-17 | 2017-03-17 | Novel heptane precise fractionation device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1362625A1 (en) * | 2002-05-13 | 2003-11-19 | Bayer Aktiengesellschaft | Process for carefully separating a substance mixture by distillation |
| JP2006510867A (en) * | 2002-12-19 | 2006-03-30 | エービービー ラマス グローバル、インコーポレイテッド | Low reflux and high yield hydrocarbon recovery method |
| CN101602641A (en) * | 2009-07-09 | 2009-12-16 | 天津大学 | A kind of double-effect distillation method of hybrid pentane isomer fine separation and system thereof |
| CN105330542A (en) * | 2014-07-03 | 2016-02-17 | 中国石油化工股份有限公司 | Production method of dimethyl oxalate |
| CN105920866A (en) * | 2016-06-27 | 2016-09-07 | 河南中托力合化学有限公司 | Precise separation device for high-purity n-heptane |
| CN105949026A (en) * | 2016-06-27 | 2016-09-21 | 河南中托力合化学有限公司 | Mixed pentane precise separation device |
| CN205965074U (en) * | 2016-06-27 | 2017-02-22 | 河南中托力合化学有限公司 | Accurate separator of high -purity n -heptane |
-
2017
- 2017-03-17 CN CN201710159085.1A patent/CN106693431A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1362625A1 (en) * | 2002-05-13 | 2003-11-19 | Bayer Aktiengesellschaft | Process for carefully separating a substance mixture by distillation |
| JP2006510867A (en) * | 2002-12-19 | 2006-03-30 | エービービー ラマス グローバル、インコーポレイテッド | Low reflux and high yield hydrocarbon recovery method |
| CN101602641A (en) * | 2009-07-09 | 2009-12-16 | 天津大学 | A kind of double-effect distillation method of hybrid pentane isomer fine separation and system thereof |
| CN105330542A (en) * | 2014-07-03 | 2016-02-17 | 中国石油化工股份有限公司 | Production method of dimethyl oxalate |
| CN105920866A (en) * | 2016-06-27 | 2016-09-07 | 河南中托力合化学有限公司 | Precise separation device for high-purity n-heptane |
| CN105949026A (en) * | 2016-06-27 | 2016-09-21 | 河南中托力合化学有限公司 | Mixed pentane precise separation device |
| CN205965074U (en) * | 2016-06-27 | 2017-02-22 | 河南中托力合化学有限公司 | Accurate separator of high -purity n -heptane |
Non-Patent Citations (4)
| Title |
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| 刘道德: "《化工设备的选择与工艺设计 典型例选及其解析》", 30 June 1996, 中南工业大学出版社 * |
| 姜国平等: "轻汽油醚化工艺中分馏塔设备选型及工艺设计", 《化工进展》 * |
| 莫畏: "《钛系列丛书 钛冶炼》", 31 July 2011, 冶金工业出版社 * |
| 邓修: "《中药制药工程与技术》", 31 May 2008, 华东理工大学出版社 * |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170524 |
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| WD01 | Invention patent application deemed withdrawn after publication |