CN106799059A - Energy-saving hexane precise distillation apparatus - Google Patents
Energy-saving hexane precise distillation apparatus Download PDFInfo
- Publication number
- CN106799059A CN106799059A CN201710159086.6A CN201710159086A CN106799059A CN 106799059 A CN106799059 A CN 106799059A CN 201710159086 A CN201710159086 A CN 201710159086A CN 106799059 A CN106799059 A CN 106799059A
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- hexane
- valve
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- saving
- tower
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Classifications
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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
- B01D3/16—Fractionating columns in which vapour bubbles through liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/16—Fractionating columns in which vapour bubbles through liquid
- B01D3/163—Plates with valves
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Energy-saving hexane precise distillation apparatus, including hexane precision fractionation tower, tower top wet type air cooling and return-flow system and bottom of towe are boiled and heat-exchange system again；Hexane precision fractionation tower is mainly made up of rectifying section and tongue type valve plate unit, stripping section tongue type valve plate unit.The new tongue type valve plate quantity of energy-saving hexane precise distillation apparatus is more, good separating effect, can be greatly lowered hexane capacity of returns, energy-conservation and hexane separation purity is high；Bottom of towe is boiled again and heat-exchange system can make raw material fully exchange heat, and device heat is recycled utilization.
Description
Technical field
The present invention relates to the energy-saving hexane precise distillation apparatus of petroleum chemical industry, belong to petrochemical equipment technology neck
Domain.
Background technology
In oil, Chemical Manufacture, petrochemical industry material or solvent oil product for producing are made up of some components more
Liquid mixture, it is necessary to carry out a certain degree of separation, with the purpose for reaching purification or reclaiming useful constituent, liquid mixture
Separation method is a lot, such as filtering, evaporation, distillation, rectifying and special extract rectification.Rectifying is a kind of separate mode therein, rectifying
Tower is the common equipment of gas-liquid heat-transfer, mass transport process.Distillation technology is the unit behaviour being most widely used in petrochemical industry
Make, be also simultaneously energy consumption and investment part higher in industrial process though there are many advantages, in the industries such as petrochemical industry,
Its energy consumption accounts for more than half of overall process total energy consumption.What the energy consumption of distillation process was concentrated mainly on rectifying column boils heater again.
Rectifying column includes the column plate unit in tower body and tower body mostly（Including column plate, downflow weir, downspout）, the tower of existing rectifying column
Plate generally existing gas-liquid contact effect is poor, column plate impact resistance is low, column plate service life is short, column plate low space utilization is gentle
The drawbacks of stream rising resistance is big.
With the fast development of the relevant industries such as oil, chemical industry, medicine, electronics, the demand to n-hexane 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.Hexane is primarily present
In petroleum ether cut, reforming raffinate oil.It is industrial at present main using precision fractionation method production n-hexane, use 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 hardly result in high-purity n-hexane；With
Special extract rectification method, relatively costly, process is complicated.
The content of the invention
The purpose of the present invention is exactly the defect for solving prior art presence, there is provided energy-saving hexane precise distillation apparatus
System.
Concrete technical scheme of the present invention is：
1st, energy-saving hexane precise distillation apparatus, including hexane precision fractionation tower, tower top wet type air cooling and return-flow system and bottom of towe
Boil again and heat-exchange system, it is characterised in that：Hexane precision fractionation tower top passes through top gaseous phase pipeline valve and wet type air cooling
Device, overhead reflux pipeline and control valve and hexane precision fractionation tower are connected；Hexane precision fractionation tower bottom passes through materials at bottom of tower
Recuperated cycle pipeline, bottom of towe delivery pump and pipeline valve and hexane precision fractionation tower are connected.
2nd, according to the energy-saving hexane precise distillation apparatus described in claim 1, it is characterised in that：Hexane 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 energy-saving hexane precise distillation apparatus described in claim 1, it is characterised in that：The tongue type of rectifying section is floated
The valve number of plates is 40-80, and the plate spacing of column plate is 350mm-500mm.
4th, according to the energy-saving hexane precise distillation apparatus described in claim 1, it is characterised in that：The tongue type of stripping section is floated
The valve number of plates is 40-80, and the plate spacing of column plate is 400mm-600mm.
5th, according to the energy-saving hexane precise distillation apparatus described in claim 1, it is characterised in that：Tower top wet type air cooling and
Return-flow system includes wet air cooler and gas phase pipeline valve, overhead reflux pipeline valve, hexane return tank and overhead reflux pump
And ducts valve, electric instrument equipment.
6th, according to the energy-saving hexane precise distillation apparatus described in claim 1, it is characterised in that：Bottom of towe is boiled again and heat is handed over
Changing system includes reboiler heating agent inlet and outlet piping, bottom reboiler, raw material heat exchanger and bottom of towe delivery pump and ducts valve
Door, 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 wet type air cooling and return-flow system has and invests small, good cooling results, big excellent of adjustable range
Point, can adjust hexane precise distillation apparatus various process parameters according to raw material Parameters variation.
2nd, bottom of towe is boiled again and the heat exchanger and raw material of heat-exchange system fully carry out heat exchange, makes hexane precise distillation apparatus
Waste heat be recycled, utilize, substantially increase energy utilization effect, energy-saving effect is notable.
3rd, rectifying section tongue type valve plate number is 40-80, and the plate spacing of column plate is 350mm-400mm；Stripping section tongue type is floated
The valve number of plates is 40-80, and the plate spacing of column plate is 400mm-500mm；The plate spacing of rectifying section is reduced, essence has been increased considerably
Section and stripping section tower tongue type valve plate quantity are evaporated, it is on the one hand small with equipment investment, easily install, on the other hand improve point
From effect, make overhead reflux amount reduction 20-40%.
Brief description of the drawings
Accompanying drawing 1 is energy-saving hexane precise distillation apparatus process chart of the invention；
In accompanying drawing 1：1st, bottom of towe delivery pump and pipeline valve；2nd, bottom reboiler；3rd, materials at bottom of tower pipeline and valve；4th, reboiler
Heating agent inlet and outlet piping and valve；5th, hexane product conveyance conduit and valve；6th, overhead reflux pump and pipeline valve；7th, hexane backflow
Tank；8th, overhead reflux pipeline and control valve；9th, gas phase pipeline valve and wet air cooler；10th, rectifying section and tongue type valve tower
Plate；11st, feed pipe and valve；12nd, raw material heat exchanger；13rd, feed(raw material)inlet；14th, stripping section and tongue type valve plate；15th, oneself
Alkane precision fractionation tower；16th, 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, energy-saving hexane precise distillation apparatus, including hexane precision fractionation tower（15）, tower top wet type air cooling
And return-flow system and bottom of towe are boiled and heat-exchange system again.
Hexane precision fractionation tower（15）Top passes through top gaseous phase pipeline valve and wet air cooler（9）, overhead reflux pipe
Road and control valve（8）With hexane precision fractionation tower（15）Connection；Hexane precision fractionation tower（15）Bottom is changed by materials at bottom of tower
Thermal cycle pipeline（16）, bottom of towe delivery pump and pipeline valve（1）With hexane precision fractionation tower（15）Connection.
Hexane precision fractionation tower（15）By feedstock pipeline and valve（11）, rectifying section and tongue type valve plate unit
（10）, stripping section tongue type valve plate unit（14）Composition.
Hexane precision fractionation tower（15）A diameter of 1200mm of rectifying section, tongue type valve plate number is between 60, the plate of column plate
Away from being 380mm.
Hexane precision fractionation tower（15）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 wet type air cooling and return-flow system include wet air cooler and gas phase pipeline valve（9）, overhead reflux pipeline and
Valve（8）, hexane return tank（7）With hexane 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（12）With bottom of towe delivery pump pipeline valve（1）And supporting electric instrument equipment.
With reference to accompanying drawing 1, the course of work of energy-saving hexane precise distillation apparatus system of the invention is：
The hexane raw material of the separation light component of preliminary preheating enters feed(raw material)inlet（13）With raw material heat exchanger（12）Heat exchange, then pass through
Feed pipe and valve（11）Into hexane precision fractionation tower（15）Carry out precision fractionation.
Hexane precision fractionation tower（15）The gas phase hexane of interior precision fractionation passes through rectifying section and tongue type valve plate unit
（10）Reach hexane precision fractionation tower（15）Tower top, by gas phase pipeline valve and wet air cooler (9) condensation liquefaction, condensate liquid
The liquid phase hexane of change enters hexane return tank (7)；A liquid phase hexane part for hexane return tank (7) passes through overhead reflux pump and pipe
Road valve（6）, overhead reflux pipeline and valve (8) return to hexane precise distillation apparatus top pumparound rectifying, another part
Liquid phase hexane passes through hexane product conveyance conduit valve（5）Go out device into hexane products pot.
Hexane precision fractionation tower（15）The liquid phase material of interior precision fractionation passes through stripping section and tongue type valve plate unit
(14) hexane precision fractionation tower is reached（15）Bottom of towe；A materials at bottom of tower part is passed through and raw material heat exchanger（12）Heat exchange, Ran Houtong
Cross bottom of towe delivery pump and pipeline valve（1）, materials at bottom of tower pipeline and valve（3）Go out device；Another part material of bottom of towe passes through
Material-heat-exchanging circulating line（16）With bottom reboiler（2）, reboiler heating agent inlet and outlet piping（4）Circulation carries out heat exchange, is section
Can type hexane 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. energy-saving hexane precise distillation apparatus, including hexane precision fractionation tower, tower top wet type air cooling and return-flow system and bottom of towe
Boil again and heat-exchange system, it is characterised in that：Hexane precision fractionation tower top passes through top gaseous phase pipeline valve and wet type air cooling
Device, overhead reflux pipeline and control valve and hexane precision fractionation tower are connected；Hexane precision fractionation tower bottom passes through materials at bottom of tower
Recuperated cycle pipeline, bottom of towe delivery pump and pipeline valve and hexane precision fractionation tower are connected.
2. according to the energy-saving hexane precise distillation apparatus described in claim 1, it is characterised in that：Hexane 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 energy-saving hexane precise distillation apparatus described in claim 1, it is characterised in that：The tongue type valve tower of rectifying section
Plate number is 40-80, and the plate spacing of column plate is 350mm-500mm.
4. according to the energy-saving hexane precise distillation apparatus described in claim 1, it is characterised in that：The tongue type valve tower of stripping section
Plate number is 40-80, and the plate spacing of column plate is 400mm-600mm.
5. according to the energy-saving hexane precise distillation apparatus described in claim 1, it is characterised in that：Tower top wet type air cooling and backflow
System include wet air cooler and gas phase pipeline valve, overhead reflux pipeline valve, hexane return tank and overhead reflux pump and
Ducts valve, electric instrument equipment.
6. according to the energy-saving hexane precise distillation apparatus described in claim 1, it is characterised in that：Bottom of towe is boiled and heat exchange series again
System includes reboiler heating agent inlet and outlet piping, bottom reboiler, raw material heat exchanger and bottom of towe delivery pump and ducts valve, electricity
Instrument equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710159086.6A CN106799059A (en) | 2017-03-17 | 2017-03-17 | Energy-saving hexane precise distillation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710159086.6A CN106799059A (en) | 2017-03-17 | 2017-03-17 | Energy-saving hexane precise distillation apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106799059A true CN106799059A (en) | 2017-06-06 |
Family
ID=58988840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710159086.6A Pending CN106799059A (en) | 2017-03-17 | 2017-03-17 | Energy-saving hexane precise distillation apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106799059A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262516A (en) * | 2021-05-18 | 2021-08-17 | 河南中托力合化学有限公司 | Side-draw structure of baffle tower for separating C16-C19 normal paraffins |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA983426A (en) * | 1971-09-22 | 1976-02-10 | Gardner L. Hayward | Dual pressure fractionation tower |
| US3953301A (en) * | 1974-09-05 | 1976-04-27 | Gulf Oil Corporation | Recovery of hexane from recycle streams from ethylene polymerization reactors |
| CN1907531A (en) * | 2005-07-29 | 2007-02-07 | 苏舍化学技术有限公司 | Tray valve for a tray column |
| CN201775972U (en) * | 2009-06-29 | 2011-03-30 | 北京先锋创新科技发展有限公司 | Tower with novel structure |
| CN102180759A (en) * | 2011-03-23 | 2011-09-14 | 北京燕山集联石油化工有限公司 | Method for preparing hexane |
| WO2014062353A1 (en) * | 2012-10-16 | 2014-04-24 | Uop Llc | Methods and apparatuses for separating a linear hexane stream from a hydrocarbon feed |
| 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 CN201710159086.6A patent/CN106799059A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA983426A (en) * | 1971-09-22 | 1976-02-10 | Gardner L. Hayward | Dual pressure fractionation tower |
| US3953301A (en) * | 1974-09-05 | 1976-04-27 | Gulf Oil Corporation | Recovery of hexane from recycle streams from ethylene polymerization reactors |
| CN1907531A (en) * | 2005-07-29 | 2007-02-07 | 苏舍化学技术有限公司 | Tray valve for a tray column |
| CN201775972U (en) * | 2009-06-29 | 2011-03-30 | 北京先锋创新科技发展有限公司 | Tower with novel structure |
| CN102180759A (en) * | 2011-03-23 | 2011-09-14 | 北京燕山集联石油化工有限公司 | Method for preparing hexane |
| WO2014062353A1 (en) * | 2012-10-16 | 2014-04-24 | Uop Llc | Methods and apparatuses for separating a linear hexane stream from a hydrocarbon feed |
| 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 |
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| Title |
|---|
| 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 * |
| 莫畏: "《钛系列丛书 钛冶炼》", 31 July 2011, 冶金工业出版社 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262516A (en) * | 2021-05-18 | 2021-08-17 | 河南中托力合化学有限公司 | Side-draw structure of baffle tower for separating C16-C19 normal paraffins |
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Application publication date: 20170606 |