CN105218314B - The method that double extractive distillation columns combine separating isopropanol, the tert-butyl alcohol and water mixed solution - Google Patents
The method that double extractive distillation columns combine separating isopropanol, the tert-butyl alcohol and water mixed solution Download PDFInfo
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- CN105218314B CN105218314B CN201510402310.0A CN201510402310A CN105218314B CN 105218314 B CN105218314 B CN 105218314B CN 201510402310 A CN201510402310 A CN 201510402310A CN 105218314 B CN105218314 B CN 105218314B
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- butyl alcohol
- isopropanol
- extractive distillation
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- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 title claims abstract description 178
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 238000000895 extractive distillation Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000011259 mixed solution Substances 0.000 title claims abstract description 26
- 239000002904 solvent Substances 0.000 claims abstract description 40
- 230000008929 regeneration Effects 0.000 claims abstract description 24
- 238000011069 regeneration method Methods 0.000 claims abstract description 24
- 239000002131 composite material Substances 0.000 claims abstract description 19
- 238000000605 extraction Methods 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims abstract description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 12
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000000243 solution Substances 0.000 claims abstract description 9
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 4
- 239000001110 calcium chloride Substances 0.000 claims abstract description 4
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 4
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims description 13
- 238000010992 reflux Methods 0.000 claims description 12
- 239000010865 sewage Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 9
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003814 drug Substances 0.000 description 5
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 4
- 235000013599 spices Nutrition 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- UOUIHQGJAMYURG-UHFFFAOYSA-N O.C(C)(C)O.CC(O)(C)C Chemical compound O.C(C)(C)O.CC(O)(C)C UOUIHQGJAMYURG-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- WJQOZHYUIDYNHM-UHFFFAOYSA-N 2-tert-Butylphenol Chemical compound CC(C)(C)C1=CC=CC=C1O WJQOZHYUIDYNHM-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000029936 alkylation Effects 0.000 description 1
- 238000005804 alkylation reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000002415 cerumenolytic agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000011928 denatured alcohol Substances 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002816 fuel additive Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C07C29/84—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation by extractive distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A kind of pair of extractive distillation column combines separating tert-butanol, the technique of isopropyl alcohol and water, mixed solution initially with the ethylene glycol solution separation of extractive distillation isopropanol, the tert-butyl alcohol and water of composite extractant 10～15% calcium chloride, tower top obtains more than 98.8% isopropanol and tert-butyl alcohol mixed liquor, bottom of towe is aqueous composite extractant, processes double solventss through regenerator and recycles；The tert-butyl alcohol that first extracting rectifying column overhead obtains separates through the second extractive distillation column with isopropanol mixed liquor, extractant is the sulfolane solution containing 20～30% propylene glycol, tower top can get more than 96.5% isopropanol, bottom of towe obtains the extractant containing tert-butyl alcohol mixed liquor, process through the second solvent regeneration tower, tower top obtains more than 96.4% tert-butyl alcohol, and bottom of towe is extracted agent and recycles.The extraction and separation technology of the present invention only needs reextraction rectification, and separating technology is simple, and isopropanol and t butanol content all reach more than 96.0%.
Description
Technical field
The present invention relates to a kind of method that isopropanol and tertiary butanol aqueous solution recycle is and in particular to a kind of double extraction is smart
Evaporate the method that tower combines separating isopropanol, the tert-butyl alcohol and water mixed solution.
Background technology
Isopropanol and the tert-butyl alcohol are important source material and the solvents of pesticide, dyestuff, medicine and spice.Isopropanol is mainly used in making
Dehydrant, and the raw material and molten of pesticide intermediate preparation are used as on medicine, cosmetics, plastics, spice, coating and electronics industry
Agent；Additionally, the abluent etc. also as circuit board and electronic equipment manufacturing industry, tool has been widely used.The tert-butyl alcohol as raw material,
Can be used as fuel additive for internal combustion engines (preventing carburetor) and antidetonator；Intermediate as organic synthesiss and the tertiary fourth of production
The raw material for alkylation of based compound, can produce methyl methacrylate, tert-butyl phenol, tert-butylamine etc., for synthetic drug, perfume (or spice)
Material；Tert-butyl alcohol dehydration can produce the isobutene. of purity 99.0～99.9%；Solvent as industrial detergent, medicine extraction
Agent, insecticide, wax solvent, the solvent of cellulose esters, plastics and paint, be additionally operable to manufacture denatured alcohol, spice, fruit essence,
Isobutene. etc..
In chemical industry, medicine and pesticide intermediate produce, widely used isopropanol and the tert-butyl alcohol are as solvent or raw material, raw
The mixed solution of a certain amount of isopropanol, the tert-butyl alcohol and water can be produced, for isopropanol and water, the tert-butyl alcohol and water during product
Separate, seen both at home and abroad and carried out separating using methods such as distillation with adding salts, extraction and absorption, but for isopropanol, the tert-butyl alcohol and water
The mixed liquor that three components are constituted separates, and respectively obtains highly purified isopropanol and the tert-butyl alcohol, and the method being recycled is still
Have no report.
Content of the invention
The method that the present invention will provide a kind of pair of extractive distillation column to combine separating tert-butanol, isopropyl alcohol and water, the method work
Skill step is simple,
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of pair of extractive distillation column combine separating tert-butanol, the mixed solution of isopropyl alcohol and water method it is characterised in that
The method stated comprise the steps：
1) initially with the mixed solution of composite extractant first time separation of extractive distillation isopropanol, the tert-butyl alcohol and water, institute
The composite extractant stated is the ethylene glycol solution of 10～15wt% calcium chloride, and raw material mixed solution divides through the first extractive distillation column
From rear, the first extracting rectifying tower top obtains isopropanol and the tert-butyl alcohol mixed liquor of more than 98.0wt%, the first extracting rectifying bottom of towe
Obtain aqueous composite extractant；
2) the aqueous composite extractant obtained by the first extracting rectifying bottom of towe is through the first solvent regeneration tower rectification process, and first
Solvent regeneration tower bottom of towe obtains composite extractant and is back to the first extractive distillation column recycling, and the first solvent reclamation column overhead obtains
To water deliver to sewage-treatment plant；
3) the second extraction delivered to by more than the 98.0wt% tert-butyl alcohol that the first extracting rectifying column overhead obtains and isopropanol mixed liquor
Rectifying column is taken to separate, the extractant of employing is the sulfolane solution of 10～15wt% propylene glycol, the tert-butyl alcohol and isopropanol mixed liquor
After the second extractive distillation column extracting rectifying, the second extracting rectifying column overhead obtains the isopropanol of more than 96.0%wt, and second
The extractant containing the tert-butyl alcohol for the extractive distillation column bottom of towe extraction；
4) extractant containing the tert-butyl alcohol of the second extractive distillation column bottom of towe extraction is through the second solvent regeneration tower rectification process, and the
Two solvent regeneration tower bottom of towes are extracted agent, are back to the second extractive distillation column and recycle, the second solvent reclamation column overhead obtains
The tert-butyl alcohol to more than 96.0wt%.
The extraction and separation technology of the present invention only needs reextraction rectification, and separating technology is simple, separate the isopropanol obtaining and
T butanol content all reaches more than 96.0wt%, and one time yield all reaches more than 94.0%.
In described method, the mixed solution of raw material isopropanol, the tert-butyl alcohol and water its common consist of, with percent mass
Ratio meter, isopropanol, the tert-butyl alcohol and water are respectively 58～62%, 28～32% and 6～12%.
In described method, the first extracting rectifying column overhead temperatures (DEG C) are 82.3～82.7 DEG C, and column bottom temperature (DEG C) is
105.4～110.2 DEG C, reflux ratio is 2～3：1.
In described method, the second extracting rectifying column overhead temperatures (DEG C) are 82.4～83.1 DEG C, and column bottom temperature (DEG C) is
107.8～110.9 DEG C, reflux ratio is 2～3：1.
In described method, the first solvent reclamation column overhead temperatures (DEG C) are 79.5～83.4 DEG C, and column bottom temperature (DEG C) is
142.7～146.6 DEG C, reflux ratio is 2～3：1.
In described method, the second solvent reclamation column overhead temperatures (DEG C) are 82.4～83.2 DEG C, and column bottom temperature (DEG C) is
144.2～146.8 DEG C, reflux ratio is 2～3：1.
Recommend ground, in described method,
The number of theoretical plate of the first extractive distillation column is 50, and feedstock position is the 45th plate, and extractant feed position is the 5th
Plate；
The number of theoretical plate of the second extractive distillation column is 65, and feedstock position is the 52nd plate, and extractant feed position is the
10 plates；
First solvent regeneration tower number of theoretical plate is 25, and feedstock position is the 11st plate；
Second solvent regeneration tower number of theoretical plate is 22, and feedstock position is the 10th plate.
Beneficial effect：The extractive distillation column of the present invention combines separating tert-butanol, the technique of isopropyl alcohol and water, and step is simple,
Initially with the mixed solution of composite extractant separation of extractive distillation isopropanol, the tert-butyl alcohol and water, tower top obtains more than 98.0%
Isopropanol and tert-butyl alcohol mixed liquor, bottom of towe is aqueous composite extractant, through regenerator process double solventss recycle；The
The tert-butyl alcohol that one extracting rectifying column overhead obtains separates through the second extractive distillation column with isopropanol mixed liquor, the second extractive distillation column
The isopropanol on top available more than 96.0%, bottom of towe is the extractant containing tert-butyl alcohol mixed liquor, processes through the second solvent regeneration tower,
Tower top obtains more than 96.0% tert-butyl alcohol, and bottom of towe is extracted agent and recycles.The extraction and separation technology of the present invention only needs two
Secondary extracting rectifying, separating technology is simple, and isopropanol and t butanol content all reach more than 96.0%, yield all reach 94.0% with
On.
Describe the present invention with reference to specific embodiment.Protection scope of the present invention is not to be embodied as
Mode is limited, but is defined in the claims.
Brief description
Fig. 1 is the process chart that double extracting rectifyings combine separating tert-butanol, isopropanol and water mixed solution；
Fig. 2 is the Experimental equipment of extractive distillation column.
Specific embodiment
Below by specific embodiment, technical solutions according to the invention are further described in detail, but are necessary
Point out that following examples are served only for the description to content of the invention, do not constitute limiting the scope of the invention.
Double extracting rectifyings of the present invention combine process chart such as Fig. 1 of separating tert-butanol, isopropanol and water mixed solution,
With reference to Fig. 2, wherein 1 is the first extractive distillation column to the experimental provision of extractive distillation column, and 2 is the first solvent regeneration tower, and 3 is the second extraction
Take rectifying column, 4 is the second solvent regeneration tower, 5,6,7,8 is condenser, 9,10,11,12 is reboiler, and 13 is head tank, and 14 are
Raw material pump, 15 is glass rotameter, and 16 is tower reactor sampler, and 17 is electric jacket, and 18 is tower reactor, and 19 is bottom temperature meter,
20 is solvent feed tank, and 21 is pump, and 22 is glass rotameter, and 23 is glass fibre cotton and chuck, and 24 is filler, and 25 is tower top
Sampler, 26 is refluxing opening, and 27 is tower top temperature meter, and 28 is electromagnetic wand, and 29 is condenser.
The tert-butyl alcohol being provided using certain drugmaker, the mixed solution of isopropyl alcohol and water are raw material, through the analysis of HP chromatograph,
Composition is shown in Table 2, and if not otherwise indicated, is related to composition in material composition and table 2, table 3 and is mass content in below describing.
The raw material tert-butyl alcohol, the mixed liquor of isopropyl alcohol and water add the first extractive distillation column 1, are simultaneously introduced composite extractant (10～15%
The ethylene glycol solution of calcium chloride), after first time separation of extractive distillation, the first extractive distillation column 1 tower top can get mixed liquor
More than 98.0% isopropanol and tert-butyl alcohol mixed liquor, bottom of towe is aqueous composite extractant, at the first solvent regeneration tower 2
Reason, the first solvent regeneration tower 2 bottom of towe obtains compound extracting and recycles, and the first solvent regeneration tower 2 tower top obtains water and delivers to sewage
Pond；More than 98.0% tert-butyl alcohol being obtained with first time extracting rectifying and isopropanol mixed liquor, as raw material, enter the second extraction essence
Evaporate tower 3 to separate, be simultaneously introduced extractant (sulfolane solutions of 10～15% propylene glycol), separate through reextraction rectification, second
Extractive distillation column 3 tower top can get more than 96.0% isopropanol, and bottom of towe is the extractant containing tert-butyl alcohol mixed liquor, molten through second
Agent regenerator 4 is processed, and the second solvent regeneration tower 4 bottom of towe is extracted agent and recycles, and the second solvent regeneration tower 4 head tower obtains
More than 96.0% tert-butyl alcohol.
Experiment is carried out at ambient pressure, and extractive distillation column tower internal diameter is 22mm, built-inType stainless steel helices, through with marking
Quasi- system of determination, this height equivalent to one theoretical plate HETP=27mm.Tower reactor is heated with electric jacket, overhead product discharging and raw material, solvent,
Charging is all measured with glass rotameter, overhead reflux electricity consumption magnet regula, tower reactor vacuum pumped, and bottom of towe effluent send
To solvent regeneration tower, solvent processes Posterior circle through regenerator and uses.
Specifically, the inventive method step is as follows：
1) 1. the mixed solution of raw material isopropanol, the tert-butyl alcohol and water is delivered to the first extractive distillation column 1 and is separated, and is simultaneously introduced multiple
Close extractant 2., 1. after the first extractive distillation column 1 separates, the first extractive distillation column 1 tower top can once obtain mixed solution
More than 98.0% isopropanol and tert-butyl alcohol mixed liquor 3., the first extractive distillation column 1 bottom of towe be aqueous composite extractant 4.；
2) 4. the aqueous composite extractant that first time separation of extractive distillation obtains is processed through the first solvent regeneration tower 2, the
One solvent regeneration tower 2 bottom of towe obtains composite extractant and 2. recycles, and 5. the first solvent regeneration tower 2 overhead water delivers to cesspool；
3) 3. more than 98.0% tert-butyl alcohol that the first extractive distillation column 1 tower top obtains and isopropanol mixed liquor deliver to the second extraction
Take rectifying column 3 to separate, be simultaneously introduced extractant 7., 3. the tert-butyl alcohol and isopropanol mixed liquor separate through the second extractive distillation column 3
Afterwards, 6., the second extractive distillation column 3 bottom of towe is containing tertiary fourth to the isopropanol of the second extractive distillation column 3 tower top available more than 96.0%
The extractant of alcohol mixed liquor is 8.；
4) extractant containing tert-butyl alcohol mixed liquor that first time separation of extractive distillation obtains 8. through the second solvent regeneration tower 4 at
Reason, the second solvent regeneration tower 4 bottom of towe is extracted agent and 7. recycles, and the second solvent regeneration tower 4 tower top obtains more than 96.0%
The tert-butyl alcohol 9..
The process conditions of above-mentioned separation process：Each tower temperature control, reflux ratio, feed entrance point and the number of plates in separation process
It is shown in Table 1, separating resulting is shown in Table shown in 2 and table 3.
Table 1 separation of extractive distillation process condition
2 pairs of extractive distillation columns of table combine separating tert-butanol-isopropanol-water mixed solution separating resulting
3 pairs of extractive distillation columns of table combine separating tert-butanol-isopropanol-water mixed solution separating resulting (Continued)
As shown in table 2 and table 3, this extraction and separation technology only needs reextraction rectification to separating resulting, and reflux ratio is 2～3:1
Left and right, separating technology is simple, and isopropanol and t butanol content all reach more than 96.0%, and one time yield all reaches more than 94.0%.
Claims (6)
1. a kind of pair of extractive distillation column combines the method for separating tert-butanol, the mixed solution of isopropyl alcohol and water it is characterised in that institute
The method stated comprises the steps：
1) initially with the mixed solution of composite extractant first time separation of extractive distillation isopropanol, the tert-butyl alcohol and water, described
Composite extractant is the ethylene glycol solution of 10～15wt% calcium chloride, and raw material mixed solution separates through the first extractive distillation column
Afterwards, the first extracting rectifying tower top obtains isopropanol and the tert-butyl alcohol mixed liquor of more than 98.0wt%, and the first extracting rectifying bottom of towe obtains
To aqueous composite extractant；
2) the aqueous composite extractant obtained by the first extracting rectifying bottom of towe is through the first solvent regeneration tower rectification process, the first solvent
Regenerator bottom of towe obtains composite extractant and is back to the first extractive distillation column recycling, and the first solvent reclamation column overhead obtains
Water delivers to sewage-treatment plant；
3) the second extraction essence delivered to by more than the 98.0wt% tert-butyl alcohol that the first extracting rectifying column overhead obtains and isopropanol mixed liquor
Evaporate tower to separate, the extractant of employing is the sulfolane solution of 10～15wt% propylene glycol, the tert-butyl alcohol and isopropanol mixed liquor pass through
After second extractive distillation column extracting rectifying, the second extracting rectifying column overhead obtains the isopropanol of more than 96.0%wt, the second extraction
The extractant containing the tert-butyl alcohol for the rectifying tower bottom extraction；
4), through the second solvent regeneration tower rectification process, second is molten for the extractant containing the tert-butyl alcohol of the second extractive distillation column bottom of towe extraction
Agent regenerator bottom of towe is extracted agent, is back to the second extractive distillation column and recycles, the second solvent reclamation column overhead obtains
The tert-butyl alcohol of more than 96.0wt%.
2. the method for separating tert-butanol according to claim 1, the mixed solution of isopropyl alcohol and water is it is characterised in that institute
The consisting of of the mixed solution of isopropanol, the tert-butyl alcohol and water stated, by percentage to the quality, isopropanol, the tert-butyl alcohol and water are respectively
For 58～62%, 28～32% and 6～12%.
3. the method for separating tert-butanol according to claim 1, the mixed solution of isopropyl alcohol and water is it is characterised in that institute
In the method stated, the first extracting rectifying column overhead temperatures (DEG C) are 82.3～82.7 DEG C, column bottom temperature (DEG C) for 105.4～
110.2 DEG C, reflux ratio is 2～3: 1.
4. the method for separating tert-butanol according to claim 1, the mixed solution of isopropyl alcohol and water is it is characterised in that institute
In the method stated, the second extracting rectifying column overhead temperatures (DEG C) are 82.4～83.1 DEG C, column bottom temperature (DEG C) for 107.8～
110.9 DEG C, reflux ratio is 2～3: 1.
5. the method for separating tert-butanol according to claim 1, the mixed solution of isopropyl alcohol and water is it is characterised in that institute
In the method stated, the first solvent reclamation column overhead temperatures (DEG C) are 79.5～83.4 DEG C, column bottom temperature (DEG C) for 142.7～
146.6 DEG C, reflux ratio is 2～3: 1.
6. the method for separating tert-butanol according to claim 1, the mixed solution of isopropyl alcohol and water is it is characterised in that institute
In the method stated, the second solvent reclamation column overhead temperatures (DEG C) are 82.4～83.2 DEG C, column bottom temperature (DEG C) for 144.2～
146.8 DEG C, reflux ratio is 2～3: 1.
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| Title |
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| 分隔壁共沸精馏塔分离叔丁醇水混合物的模拟研究;叶青;《天然气化工》;20091231;第34卷(第5期);17-20,23 * |
| 异丙醇-水分离技术研究新进展;汪宝和等;《化学研究》;20070630;第18卷(第2期);103-106 * |
| 间歇萃取精馏分离叔丁醇与水共沸物的研究;缪英等;《常州大学学报（自然科学版）》;20121231;第24卷(第4期);34-36 * |
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