CN110452093A - A kind of cyclohexanol purification pre-heating system and technique and application - Google Patents
A kind of cyclohexanol purification pre-heating system and technique and application Download PDFInfo
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- CN110452093A CN110452093A CN201910682677.0A CN201910682677A CN110452093A CN 110452093 A CN110452093 A CN 110452093A CN 201910682677 A CN201910682677 A CN 201910682677A CN 110452093 A CN110452093 A CN 110452093A
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- cyclohexanol
- tower
- knockout tower
- separation device
- reboiler
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/005—Processes comprising at least two steps in series
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/14—The ring being saturated
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/16—Systems containing only non-condensed rings with a six-membered ring the ring being unsaturated
Abstract
Present disclose provides a kind of cyclohexanol purification pre-heating system and technique and application, system includes pre- heat separation device, preheating reboiler, cyclohexanol knockout tower, hexamethylene treating column；The material outlet of the material inlet connection cyclohexene hydration reactor of pre- heat separation device, the gaseous phase materials import of the pre-separation gaseous phase outlet connection cyclohexanol knockout tower of pre- heat separation device, the liquid phase material import of the pre-separation liquid-phase outlet connection cyclohexanol knockout tower of pre- heat separation device, the tube side material inlet of the recycle stock outlet connection preheating reboiler of pre- heat separation device, the tube side material outlet of the recycle stock import connection preheating reboiler of pre- heat separation device, the shell side material inlet of the tower top material outlet connection preheating reboiler of hexamethylene treating column.The cyclohexanol knockout tower that the disclosure improves cyclohexanol refining system utilizes load and separative efficiency, saves the external energy of cyclohexanol knockout tower.
Description
Technical field
This disclosure relates to cyclohexanol refining system and technique, and in particular to a kind of cyclohexanol purification pre-heating system and technique and
Using.
Background technique
Here statement only provides background information related with the disclosure, without necessarily constituting the prior art.
Cyclohexanol is mainly used for producing cyclohexanone, adipic acid, plasticizer, surfactant and is used as industrial solvent etc..
Its conventional production methods is mainly phenol hydrogenation method and cyclohexane oxidation process.
Cyclohexene hydration method is a kind of emerging production cyclohexanol technique, compared with traditional handicraft, the technique have safety,
Environmentally protective feature.The process flow that cyclohexene hydration produces cyclohexanol is mainly main by hydration reaction, cyclohexanol purification etc.
Process composition.Understanding according to the disclosed invention people to cyclohexene hydration production cyclohexanol technique, 120 DEG C after hydration reaction,
0.5MPaG is sent to the cyclohexanol that vacuum degree is 60KPaG by pressure difference containing the product of cyclohexanol 9%, cyclohexene 90% or so and is separated
Tower cools down since the variation of pressure difference causes liquid material to flash in cyclohexanol knockout tower import, and equipment importation internal-external temperature difference is big, ring
Hexanol differs larger feature with the boiling point of cyclohexene, and under normal pressure, the boiling point of cyclohexanol is 160 DEG C, and the boiling point of cyclohexene is 83 DEG C；
Inlet temperature line temperature is down in equipment 58 DEG C by 120 DEG C.In cyclohexanol production technique, refining step is important operation
Unit, refining effect not only influence product quality, it is important that the energy of identical purified product amount consumption directly affects life
Produce the consumption of cost and external energy.Cyclohexanol refines in production technology, the heat transferring medium that traditional condenser, heat exchanger use
For recirculated water and steam, these more traditional process for refining waste a large amount of external energy.
Summary of the invention
In order to solve the deficiencies in the prior art, purpose of this disclosure is to provide a kind of cyclohexanol purification pre-heating system and techniques
And application, the cyclohexanol knockout tower for improving cyclohexanol refining system utilize load and separative efficiency, save cyclohexanol knockout tower
External energy.
To achieve the goals above, disclosed technique scheme are as follows:
In a first aspect, a kind of cyclohexanol refines pre-heating system, including pre- heat separation device, preheating reboiler, cyclohexanol point
From tower, hexamethylene treating column；
The middle part of the pre- heat separation device is equipped with material inlet, and the top of pre- heat separation device is equipped with pre-separation gas phase and goes out
Mouthful, the bottom of pre- heat separation device is equipped with pre-separation liquid-phase outlet and recycle stock exports, and the lower part of pre- heat separation device is equipped with
Recycle stock import；The middle part of cyclohexanol knockout tower is equipped with liquid phase material import and gaseous phase materials import, and gaseous phase materials import is set
It sets in the top of liquid phase material import；
Pre- heat separation device material inlet connection cyclohexene hydration reactor material outlet, pre- heat separation device it is pre-
Separate the gaseous phase materials import of gaseous phase outlet connection cyclohexanol knockout tower, the pre-separation liquid-phase outlet connection ring of pre- heat separation device
The liquid phase material import of hexanol knockout tower, pre- heat separation device recycle stock outlet connection preheating reboiler tube side material into
Mouthful, the tube side material outlet of the recycle stock import connection preheating reboiler of pre- heat separation device, the tower top of hexamethylene treating column
The shell side material inlet of material outlet connection preheating reboiler, the liquid phase material of preheating reboiler shell side condensation are exported to recycling and set
It is standby.
Firstly, the disclosure be arranged before cyclohexanol knockout tower pre- heat separation device, preheating reboiler can be in advance by ring
The material pre-separation that hexene hydration reactor generates at gaseous phase materials and liquid phase material, cyclohexanol knockout tower be arranged liquid phase material into
Mouth and gaseous phase materials import make the gaseous phase materials and liquid phase material counter current contacting of pre-separation, convenient for the friendship of liquid phase and gas phase energy
It changes, saves the energy, achieve the purpose that the energy makes full use of.Secondly, the tower of the shell side connection hexamethylene treating column of preheating reboiler
Material outlet is pushed up, the material after cyclohexene hydration reaction is heated by hexamethylene tower top material, to improve cyclohexanol
The cyclohexanol knockout tower of refining system utilizes load and separative efficiency, saves the external energy of cyclohexanol knockout tower, while hexamethylene
The gaseous phase materials that alkane purification tower top need to condense are condensed into the liquid phase material of needs.
On the other hand, a kind of cyclohexanol refines pre-heating technique, and the tower top material of hexamethylene treating column passes through indirect heating
Mode is known as gaseous phase materials and liquid phase material, preheating containing the preheating of the material of cyclohexanol and cyclohexene for what cyclohexene hydration generated
Gaseous phase materials and liquid phase material afterwards enter cyclohexanol knockout tower, and the position that gaseous phase materials enter cyclohexanol knockout tower is located at liquid phase
Material enters the lower section of cyclohexanol separation tower position, laggard into cyclohexanol knockout tower gaseous phase materials and liquid phase material decrease temperature and pressure
Row counter current contacting, then carrying out refining spearation separates cyclohexene with cyclohexanol in cyclohexanol separation column overhead.
The pre-heating technique of the disclosure to hydration reaction product liquid phase material using the material heat for needing to cool down in system into
Row preheats and is tentatively separated into liquid phase and gas phase to cyclohexanol, cyclohexene, and is not sent with liquid phase, two stock of gas phase to hexamethylene respectively
The fluid inlet of alcohol knockout tower and the import of gas phase two-phase.By carrying out initial gross separation to reaction product, cyclohexanol purification system is improved
The cyclohexanol knockout tower of system utilizes load and separative efficiency, saves the external energy of cyclohexanol knockout tower.It overcomes traditional anti-
Product is answered directly to enter the defect of cyclohexanol knockout tower with low temperature, liquid phase.
Since the system and device of the disclosure are using the heat for preparing product in hexamethylene technique, both realized to cyclohexene
It is hydrated the preheating of material, reduces energy consumption, and realize the cooling to product in hexamethylene technique, reduces energy loss, thus this
The open third aspect, provides a kind of above-mentioned cyclohexanol purification pre-heating system or cyclohexanol purification pre-heating technique is preparing hexamethylene
Application in system or technique.
The disclosure has the beneficial effect that
The disclosure is realized using the thermal energy in system, and pre-heating system does not consume steam to product initial gross separation, reduces essence
The process of system consumption steam separation product processed.According to reaction product cyclohexanol and the big feature of cyclohexene boiling point difference, utilize
Extra thermal energy in system is heated, and reaction product liquid phase is separated with gas phase, and gas phase and liquid phase respectively enter cyclohexanol point
From tower, cyclohexanol knockout tower utilization efficiency is improved, the energy in system is taken full advantage of, saves the utilization of external energy,
Cyclohexanol knockout tower Load adjustment range increases simultaneously.
Detailed description of the invention
The Figure of description for constituting a part of this disclosure is used to provide further understanding of the disclosure, and the disclosure is shown
Meaning property embodiment and its explanation do not constitute the improper restriction to the disclosure for explaining the disclosure.
Fig. 1 is that the cyclohexanol of the embodiment of the present disclosure 1 refines the structural schematic diagram of pre-heating system；
Wherein, 1, cyclohexanol knockout tower feeding preheating separator, 2, cyclohexanol feeding preheating reboiler, 3, cyclohexanol separation
Tower, 4, cyclohexanol separation tower reboiler, 5, hexamethylene treating column, 6, hexamethylene treating column condensation liquid bath.
Specific embodiment
It is noted that described further below be all exemplary, it is intended to provide further instruction to the disclosure.Unless another
It indicates, all technical and scientific terms used herein has usual with disclosure person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the disclosure.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In order to reduce the energy consumption of cyclohexene hydration production cyclohexanol purification, the present disclosure proposes a kind of purifications of cyclohexanol to preheat
System and technique and application.
A kind of exemplary embodiment of the disclosure provides a kind of cyclohexanol purification pre-heating system, including pre- thermal release dress
It sets, preheat reboiler, cyclohexanol knockout tower, hexamethylene treating column；
The middle part of the pre- heat separation device is equipped with material inlet, and the top of pre- heat separation device is equipped with pre-separation gas phase and goes out
Mouthful, the bottom of pre- heat separation device is equipped with pre-separation liquid-phase outlet and recycle stock exports, and the lower part of pre- heat separation device is equipped with
Recycle stock import；The middle part of cyclohexanol knockout tower is equipped with liquid phase material import and gaseous phase materials import, and gaseous phase materials import is set
It sets in the top of liquid phase material import；
Pre- heat separation device material inlet connection cyclohexene hydration reactor material outlet, pre- heat separation device it is pre-
Separate the gaseous phase materials import of gaseous phase outlet connection cyclohexanol knockout tower, the pre-separation liquid-phase outlet connection ring of pre- heat separation device
The liquid phase material import of hexanol knockout tower, pre- heat separation device recycle stock outlet connection preheating reboiler tube side material into
Mouthful, the tube side material outlet of the recycle stock import connection preheating reboiler of pre- heat separation device, the tower top of hexamethylene treating column
The shell side material inlet of material outlet connection preheating reboiler.
Firstly, the disclosure be arranged before cyclohexanol knockout tower pre- heat separation device, preheating reboiler can be in advance by ring
The material pre-separation that hexene hydration reactor generates at gaseous phase materials and liquid phase material, cyclohexanol knockout tower be arranged liquid phase material into
Mouth and gaseous phase materials import make the gaseous phase materials and liquid phase material counter current contacting of pre-separation, convenient for the friendship of liquid phase and gas phase energy
It changes, saves the energy, achieve the purpose that the energy makes full use of.Secondly, the tower of the shell side connection hexamethylene treating column of preheating reboiler
Material outlet is pushed up, the material after cyclohexene hydration reaction is heated by hexamethylene tower top material, to improve cyclohexanol
The cyclohexanol knockout tower of refining system utilizes load and separative efficiency, saves the external energy of cyclohexanol knockout tower.
In one or more embodiments of the embodiment, the preheating reboiler is tubulation shell-and-tube heat exchanger.
In one or more embodiments of the embodiment, including refining spearation tower reboiler, the refining spearation tower is again
Boiling device is connected to the tower reactor of cyclohexanol knockout tower.
In the series embodiment, the refining spearation tower reboiler is tubulation shell-and-tube heat exchanger.
The another embodiment of the disclosure provides a kind of cyclohexanol purification pre-heating technique, the tower of hexamethylene treating column
It pushes up material and is known as gas containing the preheating of the material of cyclohexanol and cyclohexene for what cyclohexene hydration generated by way of indirect heating
Phase materials and liquid phase material, gaseous phase materials and liquid phase material after preheating enter cyclohexanol knockout tower, and gaseous phase materials enter hexamethylene
The position of alcohol knockout tower is located at the lower section that liquid phase material enters cyclohexanol separation tower position, into cyclohexanol knockout tower gaseous phase materials
With counter current contacting is carried out after liquid phase material decrease temperature and pressure, then carry out refining spearation cyclohexanol separation column overhead make cyclohexene with
Cyclohexanol separation.
The pre-heating technique of the disclosure to hydration reaction product liquid phase material using the material heat for needing to cool down in system into
Row preheats and is tentatively separated into liquid phase and gas phase to cyclohexanol, cyclohexene, and is not sent with liquid phase, two stock of gas phase to hexamethylene respectively
The fluid inlet of alcohol knockout tower and the import of gas phase two-phase.By carrying out initial gross separation to reaction product, cyclohexanol purification system is improved
The cyclohexanol knockout tower of system utilizes load and separative efficiency, saves the external energy of cyclohexanol knockout tower.It overcomes traditional anti-
Product is answered directly to enter the defect of cyclohexanol knockout tower with low temperature, liquid phase.
In one or more embodiments of the embodiment, the temperature of the hexamethylene refined tower top gaseous phase materials is
89-91℃.The outflow gas phase of hexamethylene refined tower top passes through the shell side of cyclohexanol knockout tower feeding preheating separator, latent heat quilt
Hydration reaction product absorbs to have obtained the liquid-phase product to cool down into needs, and the cyclohexanol reaction product in tube side makes full use of shell side
The latent heat and sensible heat of middle alkane overhead gas phase, save the dosage of steam.Hexamethylene refined tower top product is cold simultaneously
But, the dosage of recirculated water is saved.
In one or more embodiments of the embodiment, the vacuum degree of the cyclohexanol knockout tower is 53~55KPaG.
In one or more embodiments of the embodiment, the tower top temperature of the cyclohexanol knockout tower is 40~48 DEG C.
In one or more embodiments of the embodiment, the bottom temperature of the cyclohexanol knockout tower is 75-80 DEG C.
The disclosure third aspect, provides a kind of above-mentioned cyclohexanol purification pre-heating system or cyclohexanol purification pre-heating technique exists
Prepare the application in hexamethylene system or technique.
The system and device of the disclosure had both been realized using the heat for preparing product in hexamethylene technique to cyclohexene hydration
The preheating of material reduces energy consumption, and realizes the cooling to product in hexamethylene technique, reduces energy loss.
In order to enable those skilled in the art can clearly understand the technical solution of the disclosure, below with reference to tool
The technical solution of the disclosure is described in detail in the embodiment of body.
Embodiment 1
A kind of cyclohexanol purification pre-heating system, as shown in Figure 1, including cyclohexanol knockout tower feeding preheating separator 1, hexamethylene
Alcohol feeding preheating reboiler 2, cyclohexanol knockout tower 3, cyclohexanol separation tower reboiler 4, hexamethylene treating column 5, hexamethylene purification
Tower condenses liquid bath 6.Cyclohexanol knockout tower feeding preheating separator 1 is flash separator, and the lower part of flash separator guarantees certain
Liquid level.
Wherein, the Matter Transfer outlet of cyclohexanol knockout tower feeding preheating separator 1 and cyclohexanol feeding preheating reboiler 2
The material inlet of tube side communicates, the material outlet and cyclohexanol knockout tower feeding preheating of 2 tube side of cyclohexanol feeding preheating reboiler
The object loop head of separator 1 communicates；The material liquid-phase outlet of cyclohexanol knockout tower feeding preheating separator 1 is separated with cyclohexanol
The arrival end of tower 3 communicates, the material liquid-phase outlet of cyclohexanol knockout tower feeding preheating separator 1 and entering for cyclohexanol knockout tower 3
Mouth end communicates, the arrival end phase of the material gaseous phase outlet and cyclohexanol knockout tower 3 of cyclohexanol knockout tower feeding preheating separator 1
Logical, the liquid phase arrival end of cyclohexanol knockout tower 3 is in the upper surface of gas phase arrival end, convenient for exchanging for liquid phase and gas phase energy, saving
The energy reaches the energy and makes full use of.5 overhead product discharge port of hexamethylene treating column and 2 shell side of cyclohexanol feeding preheating reboiler
Material inlet connection.The import of hexamethylene treating column condensation liquid bath 6 and the material of 2 shell side of cyclohexanol feeding preheating reboiler go out
Mouth connection.
Cyclohexanol feeding preheating reboiler 2 is tubulation shell-and-tube heat exchanger.
A kind of cyclohexanol knockout tower feeding preheating technique, steps are as follows:
1) cyclohexanol reaction come containing 9% or so cyclohexanol, contain cyclohexene 90%, micro-benzene, flow be 140~
The reaction product that 160t/h, temperature are 120 DEG C, pressure is 0.5MPaG is sent to cyclohexanol knockout tower feeding preheating separator, is led to
Cyclohexanol knockout tower feeding preheating reboiler tube side is crossed by after the Matter Transfer heating in shell side, due to cyclohexanol and cyclohexene
Boiling point difference is big, is 54KPaG in vacuum degree, and separator kettle temperature is 85 DEG C or so, and head temperature will under conditions of being 40-48 DEG C
Cyclohexanol in hydration reaction product is separated with cyclohexene, and the cyclohexanol product of component weight is with liquid phase from cyclohexanol knockout tower
The outflow of feeding preheating separator bottom, the light hexamethylene ene product of component is with gas phase from cyclohexanol knockout tower feeding preheating separator top
Portion's outflow.
2) the hexamethylene refined tower top gas phase flow rate of the tube side using energy source of cyclohexanol feeding preheating reboiler is about
95Kg/h, ingredient are methyl cyclopentane 73%, and hexamethylene is about 21.5% latent heat when needing to be condensed into liquid phase, it is no longer necessary to be mentioned
For steam source, the liquid phase of hexamethylene condensation enters condensation liquid bath and is recycled.
3) cyclohexanol feeding preheating reboiler medium heating be separated into gas phase and liquid phase, into cyclohexanol knockout tower into
Expect that pre- heat separator is separated.
4) it is divided to two strands to respectively enter hexamethylene in the gas phase and liquid phase medium of the separation of cyclohexanol knockout tower feeding preheating separator
Alcohol knockout tower, gas phase import are sufficiently mixed, energy mutually intersects below fluid inlet when falling and rise with gas phase convenient for liquid phase
It changes, component is sufficiently separated.
The foregoing is merely preferred embodiment of the present disclosure, are not limited to the disclosure, for the skill of this field
For art personnel, the disclosure can have various modifications and variations.It is all within the spirit and principle of the disclosure, it is made any to repair
Change, equivalent replacement, improvement etc., should be included within the protection scope of the disclosure.
Claims (10)
1. a kind of cyclohexanol refines pre-heating system, including pre- heat separation device, preheating reboiler, cyclohexanol knockout tower, hexamethylene
Treating column；
The middle part of the pre- heat separation device is equipped with material inlet, and the top of pre- heat separation device is equipped with pre-separation gaseous phase outlet,
The bottom of pre- heat separation device is equipped with pre-separation liquid-phase outlet and recycle stock exports, and the lower part of pre- heat separation device is equipped with circulation
Material inlet；The middle part of cyclohexanol knockout tower is equipped with liquid phase material import and gaseous phase materials import, and gaseous phase materials import setting exists
The top of liquid phase material import；
The material outlet of the material inlet connection cyclohexene hydration reactor of pre- heat separation device, the pre-separation of pre- heat separation device
Gaseous phase outlet connects the gaseous phase materials import of cyclohexanol knockout tower, and the pre-separation liquid-phase outlet of pre- heat separation device connects cyclohexanol
The liquid phase material import of knockout tower, the tube side material inlet of the recycle stock outlet connection preheating reboiler of pre- heat separation device,
The tube side material outlet of the recycle stock import connection preheating reboiler of pre- heat separation device, the tower top material of hexamethylene treating column
The shell side material inlet of outlet connection preheating reboiler.
2. cyclohexanol as described in claim 1 refines pre-heating system, characterized in that the preheating reboiler is tubulation shell-and-tube
Heat exchanger.
3. cyclohexanol as described in claim 1 refines pre-heating system, characterized in that described including refining spearation tower reboiler
Refining spearation tower reboiler is connected to the tower reactor of cyclohexanol knockout tower.
4. cyclohexanol as claimed in claim 3 refines pre-heating system, characterized in that the refining spearation tower reboiler is tubulation
Shell-and-tube heat exchanger.
5. a kind of cyclohexanol refines pre-heating technique, the tower top material of hexamethylene treating column is by way of indirect heating by cyclohexene
What hydration generated is known as gaseous phase materials and liquid phase material containing the preheating of the material of cyclohexanol and cyclohexene, the gaseous phase materials after preheating
Enter cyclohexanol knockout tower with liquid phase material, the position that gaseous phase materials enter cyclohexanol knockout tower is located at liquid phase material and enters hexamethylene
Alcohol separate tower position lower section, into cyclohexanol knockout tower gaseous phase materials and liquid phase material decrease temperature and pressure after carry out counter current contacting,
Then carrying out refining spearation separates cyclohexene with cyclohexanol in cyclohexanol separation column overhead.
6. cyclohexanol as claimed in claim 5 refines pre-heating technique, characterized in that the hexamethylene refined tower top material
Temperature is 89~91 DEG C.
7. cyclohexanol as claimed in claim 5 refines pre-heating technique, characterized in that the vacuum degree of the cyclohexanol knockout tower is
53~55KPaG.
8. cyclohexanol as claimed in claim 5 refines pre-heating technique, characterized in that the tower top temperature of the cyclohexanol knockout tower
It is 40~48 DEG C.
9. cyclohexanol as claimed in claim 5 refines pre-heating technique, characterized in that the bottom temperature of the cyclohexanol knockout tower
It is 55~60 DEG C.
10. a kind of any cyclohexanol purification pre-heating system of claims 1 to 3 or any ring of claim 4~9
Hexanol purification pre-heating technique is preparing the application in hexamethylene system or technique.
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| CN201910682677.0A CN110452093A (en) | 2019-07-26 | 2019-07-26 | A kind of cyclohexanol purification pre-heating system and technique and application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113694556A (en) * | 2021-09-30 | 2021-11-26 | 杭州浥能科技有限公司 | Energy-saving device and method for separating cyclohexanol in hydration method |
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| CN113694556A (en) * | 2021-09-30 | 2021-11-26 | 杭州浥能科技有限公司 | Energy-saving device and method for separating cyclohexanol in hydration method |
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