CN110393938A - A kind of novel destilling tower for being not required to extract industrial alcohol - Google Patents
A kind of novel destilling tower for being not required to extract industrial alcohol Download PDFInfo
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- CN110393938A CN110393938A CN201910805633.2A CN201910805633A CN110393938A CN 110393938 A CN110393938 A CN 110393938A CN 201910805633 A CN201910805633 A CN 201910805633A CN 110393938 A CN110393938 A CN 110393938A
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- tower
- layers
- aldehyde
- thick
- water scrubber
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 123
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 290
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 111
- 238000011084 recovery Methods 0.000 claims abstract description 66
- 239000012535 impurity Substances 0.000 claims abstract description 59
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims abstract 13
- 238000010438 heat treatment Methods 0.000 claims description 20
- -1 thick tower (1) Chemical compound 0.000 claims description 16
- 239000003517 fume Substances 0.000 claims description 14
- 238000010992 reflux Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 25
- 230000008569 process Effects 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000002028 Biomass Substances 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000004821 distillation Methods 0.000 abstract description 4
- 150000001299 aldehydes Chemical class 0.000 description 104
- 235000019441 ethanol Nutrition 0.000 description 95
- 238000009835 boiling Methods 0.000 description 26
- 239000001760 fusel oil Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000356 contaminant Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- PHTQWCKDNZKARW-UHFFFAOYSA-N isoamylol Chemical compound CC(C)CCO PHTQWCKDNZKARW-UHFFFAOYSA-N 0.000 description 4
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000012467 final product Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 210000000697 sensory organ Anatomy 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- 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
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
-
- 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
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
-
- 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
- B01D3/42—Regulation; Control
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of novel destilling towers for being not required to extract industrial alcohol, it is related to alcohol industry production distillation technique, including thick tower, aldehyde tower, water scrubber, smart tower, methanol column and recovery tower, the thick tower, aldehyde tower, water scrubber, smart tower and methanol column are sequentially connected, the recovery tower is connected to thick tower, aldehyde tower, water scrubber, smart tower, methanol column, the thick tower, aldehyde tower, water scrubber, smart tower, partial impurities in methanol column enter recovery tower, the impure alcohol in part is transported to aldehyde tower in the recovery tower and water scrubber is purified again, increase the height of each tower simultaneously and takes wine open height, accurately control each tower index and charging, adopt wine, it mentions miscellaneous, take miscellaneous position, it solves in existing biomass to alcohol conversion process, production top grade alcohol needs to extract a certain amount of industrial alcohol and can be only achieved national standard, have to alcohol and heat The problem of certain waste.
Description
Technical field
The present invention relates to biomass to alcohol conversion process field, in particular to a kind of novel destilling tower for being not required to extract industrial alcohol.
Background technique
With the development of science and technology, existing biomass to alcohol conversion process has had certain fixation technological process of production,
In existing biomass to alcohol conversion process, the industrial alcohol that production top grade alcohol needs to extract a certain amount of (at least 1.5%) could reach
To national standard.
Prior art generally uses six-column differential-pressure to distill, and each tower ability is given full play in production, and suitable control is each in operation
The parameter of tower, such as temperature of thick tower, the wine degree of thick wine；The pressure of aldehyde tower, the return flow or even wine degree of aldehyde tower；The pressure of water scrubber
Power control, the control of light wine and the wine degree that flows back；The control of smart tower reflux ratio；The pressure of methanol column controls；Recovery tower takes oil temperature
Control, it is crucial in each tower feed entrance point and extract impurity position and whereabouts it is most important, prior art adheres to tradition
Theory do not do larger improvement, the control and charging of each tower index adopt wine, mention that miscellaneous, to take miscellaneous position be not optimum position.
In existing biomass to alcohol conversion process, without preferably each tower index of control destilling tower and charging, adopt wine, mention it is miscellaneous,
Miscellaneous position is taken, so that the industrial alcohol that production top grade alcohol needs to extract a certain amount of (at least 1.5%) in prior art could reach
To national standard, there is certain waste to alcohol and heat.
Summary of the invention
It is an object of the invention to: a kind of novel destilling tower for being not required to extract industrial alcohol is provided, is solved existing
Biomass to alcohol conversion process in, without preferably each tower index of control destilling tower and charging, adopt wine, mention it is miscellaneous, take miscellaneous position so that existing
There is the industrial alcohol that production top grade alcohol needs to extract a certain amount of (at least 1.5%) in technique to can be only achieved national standard, to wine
Essence and heat have the problem of certain waste.
The technical solution adopted by the invention is as follows:
A kind of novel destilling tower for being not required to extract industrial alcohol, including thick tower, aldehyde tower, water scrubber, smart tower, methanol column and return
Receive tower；
The thick tower, aldehyde tower, water scrubber, smart tower and methanol column are sequentially connected；
The recovery tower is connected to thick tower, aldehyde tower, water scrubber, smart tower, methanol column, the thick tower, aldehyde tower, water scrubber, essence
Partial impurities in tower, methanol column enter recovery tower, and the impure alcohol in part is transported to aldehyde tower and washing in the recovery tower
Tower is purified again.
The thick tower is the first step of destilling tower, and mature mash enters thick tower and carries out predistillation, and thick tower bottom discharge is useless
Vinasse, meanwhile, take wine to enter aldehyde tower from the upper end of thick tower by condenser, higher than the impurity of alcohol boiling point, from lower end and useless wine
Grain is discharged together from the bottom of thick tower；
The aldehyde tower is the second step of distilled spirit, when work, takes wine to enter water scrubber from the bottom of aldehyde tower, is lower than alcohol
The impurity of boiling point such as aldehyde material etc. is discharged from aldehyde tower top end；
The water scrubber is the third step of distilled spirit, when work be passed through into water scrubber water dilution alcohol is carried out it is dilute
It releases, fusel oil is removed by dilution；
The essence tower is highest tower, the control more accurate than thick tower and aldehyde tower is carried out to temperature in tower, so that its bottom
Stripping section can be additionally separated the impurity more slightly higher than alcohol boiling point, and the condenser of the rectifying section on top can pass through condensation
The impurity that some boiling points are slightly below alcohol can be also discharged in fume, the tower of our Pasteur's purifying areas in smart tower top more down
Plate takes alcohol, can get more pure alcohol in this way；
The methanol column is to remove the methanol contained in alcohol, since the physics and chemical property of methanol and ethyl alcohol are close,
Compare difficult removal, passes through control temperature in methanol column between 64.7 DEG C of the boiling point of methanol and 78 DEG C of boiling point of ethyl alcohol, so that
Methanol contaminant can effectively be separated；
The alcohol rich in impurity is had collected in the recovery tower, in existing technology, usually discharge or defeated again
It is sent to water scrubber and is again introduced into carry out sequence purification in destilling tower, however since the alcohol for being rich in impurity in recovery tower is more, only
Biggish burden can be brought to destilling tower by being passed through water scrubber, and makes the postorder smart tower of water scrubber and methanol column the load becomes large, therefore
And the alcohol that impurity is rich in recovery tower is passed through in aldehyde tower and water scrubber, divide impurity by aldehyde tower and water scrubber
Stream, so that impure alcohol respectively enters aldehyde tower and water scrubber carries out distillation removal impurity, then as process enters smart tower
Distilation, this design of the invention, so as to reflow of alcohol impure in recovery tower to distillation are successively carried out with methanol column
Be split when in the link of tower so that impurity can be purified after flowing back into destilling tower more sufficiently, reduce the waste of alcohol.
Further, the thick tower condenser system control thick tower highest natural temperature next top pressure controllable and-
65kpa is hereinafter, bottom temp control is being no more than 83 DEG C.In general, thick column bottom temperature is controlled at 83 DEG C, top 65
DEG C, this temperature is more conducive to thick tower and water scrubber, smart tower, methanol column form differential pressure, convenient for exchanging heat, while thick wine strip of keeping under strict control,
It is simultaneously that the reasonable installation of the distributor designs in thick tower is accurate, keep thick wine wine degree control at 75 degree or so；Simultaneously in negative pressure
Under can control acids impurity as far as possible and be not carried in system below by alcohol.
Further, the stripping section of the Cu Ta lower layer has at least 25 layers of column plate, and the rectifying section on upper layer has at least 6 layers of tower
Plate is heated jointly by the fume of water scrubber fume and methanol column.In thick tower, mainly to the discharge higher presentation solid shape of boiling point
The impurity and boiling point of state are far below the impurity of ethyl alcohol, belong to most preliminary coarse filtration, so the temperature of the thick tower of setting is in ethyl alcohol
78 DEG C of boiling point or so, will not be too high or too low, and lower than the temperature in water scrubber, smart tower and methanol column, most preferably, setting is thick
Stripping section column plate is arranged the rectifying section column plate on upper layer between 6 to 12 layers, thick tower can be made to have between 25 to 35 layers below tower
One preferably coarse filtration effect.
Further, the aldehyde tower is set as at least 60 layers of column plate, wherein at least 25 layers of stripping section, rectifying section at least 35
Layer, You Jingta tail gas heating or methanol column tail gas heating, work under negative pressure.Under normal circumstances, the aldehyde top of tower temperature exists
52 DEG C or so, 68 DEG C of bottom temp or so, for aldehyde tower by smart tower tail gas heating or methanol column tail gas heating, the temperature in aldehyde tower is thick
It is minimum in tower, aldehyde tower, water scrubber, smart tower and methanol column this five tower, but aldehyde tower column bottom temperature is higher than the thick column overhead temperatures,
Aldehyde tower is enabled to exclude methanol and part low boiling impurity aldehydes, lipid, acids etc..
Further, the tower reflux ratio of the aldehyde tower ensures to flow back wine degree at 95 degree or more, and impurity is rich in recovery tower
Alcohol comes 52 layers of aldehyde tower or more progress secondary separation purifications again.The aldehyde tower works under negative pressure, top pressure almost with
Thick top of tower is identical, and tower reflux ratio ensures to flow back wine degree at 95 degree or more, and control wine degree makes from the wine come out in aldehyde tower
Alcohol content is higher, has biggish help for the washing discharge impurity of subsequent water scrubber.
Further, the water scrubber is set as at least 50 layers, wherein at least 25 layers of stripping section, and at least 25 layers of rectifying section,
It being heated by the fume of smart tower, keeps normal pressure or micro-negative pressure operation, control light wine within 18 degree, reflux wine degree does not surpass 30 degree,
The water scrubber generally washs water by tower top and controls wine degree, and water scrubber washing water is reduced using smart tower waste water circulation washing
Wine degree, such wine degree are theoretically conducive to exclude intermediate impurity fusel oil normal propyl alcohol, isoamyl alcohol, isobutanol, reduce wine degree
The impurity volatility coefficient such as fusel oil is greater than 1 afterwards, so that vaporization is discharged at the top of water scrubber, also functions to simultaneously for the sense organ of product
Critically important effect.
Further, the smart tower is by being set as at least 85 layers, wherein at least 18 layers of stripping section, and at least 67 layers of rectifying section,
Wine mouth is taken to be set as at least 81 layers or more and be not top, it is highest tower in all destilling towers that smart tower, which is arranged, general to keep
For smart tower bottom at 139 DEG C or so, it at 81 layers or more, and is not most that the height for taking wine mouth is improved at 110 DEG C or so in top
High level avoids the lower impurity of the boiling point of top from being mixed into the wine of taking-up, in general, when smart tower is set as 85 to 90 layers,
Wine mouth is taken to be correspondingly arranged at 81 to 86 layers, setting in this way can effectively control the quality of extraction alcohol, effectively control intermediate impurity
It is not carried in finished wine, alcohol of the cold liquid in smart tower end rich in impurity can enter 30 layers of left side in the middle part of water scrubber in the prior art
The right side, the present invention are changed to separate low-boiling point material and methanol again into aldehyde tower return tank, and smart pressure tower is indirect by extraneous steam
Heating, be the main heat source of whole system, and smart pressure tower is appropriate in scope of design according to yield and quality, each tower operating condition etc.
Adjustment.
Further, the methanol column is set as at least 65 layers, and You Jingta fume heating, tower charging layer is set as at least 50
Layer or more and be not top, tower feeds layer and is changed to 50 layers of charging by existing 25 layers, and it is timely to increase bottom end stripping section space
Between, it can effectively be controlled for excluding methanol contaminant, the cold liquid in end is typically designed as extracting industrial alcohol i.e. methanol, this technique changes
It flows back into for aldehyde tower, carries out separating-purifying again, effectively exclude methanol and low boiling impurity.
Further, the recovery tower is set as at least 65 layers, and wherein the stripping section of lower layer is set as at least 18 layers, upper layer
Rectifying section be set as at least 47 layers, by flash steam and direct steam heating, general normal pressure control, column plate is conducive to control after increasing
The alcohol final product quality recycled in recovery tower processed, so that it is guaranteed that product quality.30 layers of water inlet of wine design are adopted, this technique is changed into aldehyde
In tower, generally 52 layers or so, it is more advantageous to removal impurity.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1. the present invention it is a kind of be not required to extract industrial alcohol novel destilling tower, using such as it is above-mentioned accurately control each tower index and
Feed, adopt wine, mention it is miscellaneous, take miscellaneous position, solve in existing biomass to alcohol conversion process, production top grade alcohol needs to extract certain
The industrial alcohol of amount (at least 1.5%) can be only achieved national standard, have the problem of certain waste to alcohol and heat；
2. a kind of novel destilling tower for being not required to extract industrial alcohol of the present invention, all increases the column plate layer of each tower, than
Column plate layer in the prior art is high, so that the reflux ratio of tower becomes smaller, saves steam consumption；
3. a kind of novel destilling tower for being not required to extract industrial alcohol of the present invention, in the tune to the pipeline for feeding and taking impurity wine
Bulk wight is newly laid out so that product index under the premise of not extracting industrial alcohol can stable operation, increase product yield, mention
High economic value.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is thick tower connection structure diagram of the invention；
Fig. 2 is aldehyde tower connection structure diagram of the invention；
Fig. 3 is water scrubber of the invention and smart tower connection structure diagram；
Fig. 4 is methanol column connection structure diagram of the invention；
Fig. 5 is recovery tower connection structure diagram of the invention；
Fig. 6 is structural block diagram of the invention；
In figure, the thick tower of 1-, 2- aldehyde tower, 3- water scrubber, 4- essence tower, 5- methanol column, 6- recovery tower, 7- condenser, 8- heat exchange
Device, 9- pump, 10- reboiler, 11- surge tank, 12- air condensate, 13- fusel oil eliminator.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
It elaborates below with reference to Fig. 1 to Fig. 6 to the present invention.
Embodiment 1
A kind of novel destilling tower for being not required to extract industrial alcohol, such as Fig. 1 to Fig. 6, including thick tower 1, aldehyde tower 2, water scrubber 3,
Smart tower 4, methanol column 5 and recovery tower 6；
The thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4 and methanol column 5 are sequentially connected；
The recovery tower 6 is connected to thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column 5, the thick tower 1, aldehyde tower 2, water
It washes tower 3, smart tower 4, the partial impurities in methanol column 5 and enters recovery tower 6, the alcohol conveying that part is impure in the recovery tower 6
It is purified again to aldehyde tower 2 and water scrubber 3.
The operation principle of the present invention is that: such as Fig. 1, thick tower 1 is the first step of destilling tower, after mature mash passes through heat exchanger 8
Carry out predistillation into thick tower 1, Distillers' grains are discharged in thick 1 bottom of tower, meanwhile, from the upper end of thick tower 1 by condenser 7 take wine into
Enter aldehyde tower 2, higher than the impurity of alcohol boiling point, is discharged together from lower end and Distillers' grains from the bottom of thick tower 1；
Such as Fig. 2, aldehyde tower 2 is the second step of distilled spirit, and the thick wine of thick tower 1 enters aldehyde tower 2 after heat exchanger 8, from aldehyde
The bottom of tower 2 takes wine to enter water scrubber 3, lower than the impurity such as aldehyde material etc. of alcohol boiling point, is discharged from 2 top of aldehyde tower；
Such as Fig. 3, water scrubber 3 is the third step of distilled spirit, and the full gear wine that aldehyde tower 2 comes out leads to after a heat exchanger 8
Enter water scrubber 3, when work is passed through water dilution into water scrubber 3 and is diluted to alcohol, passes through dilution removal fusel oil；
Such as Fig. 3, the essence tower 4 is highest tower, and the control more accurate than thick tower 1 and aldehyde tower 2 is carried out to temperature in tower, is made
The stripping section of its bottom can be additionally separated the impurity more slightly higher than alcohol boiling point, and the condenser 7 of the rectifying section on top
The impurity that some boiling points are slightly below alcohol can also be discharged by condensing fume, our bars in smart 4 top of tower more down
The column plate of family name's purifying area takes alcohol, can get more pure alcohol in this way；
Such as Fig. 4, the methanol column 5 is to remove the methanol contained in alcohol, and the alcohol that smart tower 4 comes out is passed through methanol column 5, by
Close, the more difficult removal in the physics and chemical property of methanol and ethyl alcohol, by controlling temperature in the boiling of methanol in methanol column 5
Between 64.7 DEG C and 78 DEG C of boiling point of ethyl alcohol of point, methanol contaminant is effectively separated；The access of 5 bottom end of methanol column
One cooler directly picks out alcohol finished product；
Such as Fig. 5, the alcohol rich in impurity is had collected in the recovery tower 6, it is mainly impure in aldehyde tower 2 and smart tower 4
Alcohol be usually discharged or be again fed to water scrubber 3 in existing technology and be again introduced into destilling tower progress sequence
Purification, however since the alcohol for being rich in impurity in recovery tower 6 is more, biggish bear can be brought to destilling tower by being only passed through water scrubber 3
Load, and make the postorder smart tower 4 of water scrubber 3 and methanol column 5 the load becomes large, so the alcohol that impurity is rich in recovery tower 6 is led to
Enter in aldehyde tower 2 and water scrubber 3, shunt impurity by aldehyde tower 2 and water scrubber 3, so that impure alcohol is distinguished
Distillation removal impurity is carried out into aldehyde tower 2 and water scrubber 3, then as process enters smart tower 4 and methanol column 5 is successively distilled
Purification, this design of the invention so as to impure reflow of alcohol in recovery tower 6 into the link of destilling tower when be split,
So that impurity can be purified after flowing back into destilling tower more sufficiently, reduce the waste of alcohol.
Embodiment 2
A kind of novel destilling tower for being not required to extract industrial alcohol, such as Fig. 1 to Fig. 6, including thick tower 1, aldehyde tower 2, water scrubber 3,
Smart tower 4, methanol column 5 and recovery tower 6；
The thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4 and methanol column 5 are sequentially connected；
The recovery tower 6 is connected to thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column 5, the thick tower 1, aldehyde tower 2, water
It washes tower 3, smart tower 4, the partial impurities in methanol column 5 and enters recovery tower 6, the alcohol conveying that part is impure in the recovery tower 6
It is purified again to aldehyde tower 2 and water scrubber 3.
Such as Fig. 1, thick 1 condenser system of tower control thick tower 1 highest natural temperature next top pressure controllable and-
65kpa is hereinafter, bottom temp control is being no more than 83 DEG C.In general, thick 1 bottom temp of tower is controlled at 83 DEG C, top 65
DEG C, this temperature is more conducive to thick tower 1 and water scrubber 3, smart tower 4, methanol column 5 form differential pressure, convenient for exchanging heat, while thick wine band of keeping under strict control
Material, while by the reasonable installation of the distributor designs in thick tower 1 precision, keep thick wine wine degree control at 75 degree or so；Exist simultaneously
Acids impurity can be controlled under negative pressure as far as possible not to be carried in system below by alcohol.
Embodiment 3
A kind of novel destilling tower for being not required to extract industrial alcohol, such as Fig. 1 to Fig. 6, including thick tower 1, aldehyde tower 2, water scrubber 3,
Smart tower 4, methanol column 5 and recovery tower 6；
The thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4 and methanol column 5 are sequentially connected；
The recovery tower 6 is connected to thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column 5, the thick tower 1, aldehyde tower 2, water
It washes tower 3, smart tower 4, the partial impurities in methanol column 5 and enters recovery tower 6, the alcohol conveying that part is impure in the recovery tower 6
It is purified again to aldehyde tower 2 and water scrubber 3.
Such as Fig. 1, the stripping section of 1 lower layer of Cu Ta has at least 25 layers of column plate, and the rectifying section on upper layer has at least 6 layers of column plate,
It is heated jointly by the fume of 3 fume of water scrubber and methanol column 5, is set as 25 layers of column plate of stripping section in the present embodiment, 6 layers of rectifying section
Column plate.In thick tower 1, the impurity of ethyl alcohol is mainly far below to the higher impurity that solid forms are presented of discharge boiling point and boiling point,
Belong to most preliminary coarse filtration, so setting thick tower 1 temperature at 78 DEG C of boiling point or so of ethyl alcohol, will not be too high or too low,
And lower than the temperature in water scrubber 3, smart tower 4 and methanol column 5, thick tower 1 can be made to have a preferably coarse filtration effect.
Embodiment 4
A kind of novel destilling tower for being not required to extract industrial alcohol, including thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column
5 and recovery tower 6；
The thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4 and methanol column 5 are sequentially connected；
The recovery tower 6 is connected to thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column 5, the thick tower 1, aldehyde tower 2, water
It washes tower 3, smart tower 4, the partial impurities in methanol column 5 and enters recovery tower 6, the alcohol conveying that part is impure in the recovery tower 6
It is purified again to aldehyde tower 2 and water scrubber 3.
Further, such as Fig. 2, the aldehyde tower 2 is set as at least 60 layers of column plate, wherein at least 25 layers of stripping section, rectifying section
At least 35 layers, 5 tail gas heating of 4 tail gas heating of You Jingta or methanol column works under negative pressure.In the present embodiment, setting aldehyde tower 2 is
65 layers of column plate, 35 layers of rectifying section, 30 layers of stripping section, under normal circumstances, 2 head temperature of aldehyde tower is at 52 DEG C or so, bottom temperature
68 DEG C or so of degree, aldehyde tower 2 by smart 4 tail gas heating of tower or 5 tail gas heating of methanol column, the temperature in aldehyde tower 2 be thick tower 1, aldehyde tower 2,
It is minimum in water scrubber 3, smart tower 4 and methanol column 5 this five tower, but 2 column bottom temperature of aldehyde tower is higher than thick 1 tower top temperature of tower, makes
Methanol and part low boiling impurity aldehydes, lipid, acids etc. can be excluded by obtaining aldehyde tower 2.
Embodiment 5
A kind of novel destilling tower for being not required to extract industrial alcohol, including thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column
5 and recovery tower 6；
The thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4 and methanol column 5 are sequentially connected；
The recovery tower 6 is connected to thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column 5, the thick tower 1, aldehyde tower 2, water
It washes tower 3, smart tower 4, the partial impurities in methanol column 5 and enters recovery tower 6, the alcohol conveying that part is impure in the recovery tower 6
It is purified again to aldehyde tower 2 and water scrubber 3.
Further, such as Fig. 2, the tower reflux ratio of the aldehyde tower 2 ensures to flow back wine degree richness in 95 degree or more, recovery tower 6
Impure alcohol comes 52 layers of aldehyde tower 2 or more progress secondary separation purifications again.The aldehyde tower 2 works under negative pressure, top
Portion's pressure is almost identical as thick 1 top of tower, and tower reflux ratio ensures to flow back wine degree at 95 degree or more, and control wine degree makes from aldehyde tower 2
In come out wine in alcohol content it is higher, for subsequent water scrubber 3 washing discharge impurity have biggish help.
Embodiment 6
A kind of novel destilling tower for being not required to extract industrial alcohol, including thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column
5 and recovery tower 6；
The thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4 and methanol column 5 are sequentially connected；
The recovery tower 6 is connected to thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column 5, the thick tower 1, aldehyde tower 2, water
It washes tower 3, smart tower 4, the partial impurities in methanol column 5 and enters recovery tower 6, the alcohol conveying that part is impure in the recovery tower 6
It is purified again to aldehyde tower 2 and water scrubber 3.
Further, such as Fig. 3, the water scrubber 3 is set as at least 50 layers, wherein at least 25 layers of stripping section, and rectifying section is extremely
25 layers few, it is 50 layers that water scrubber 3 is arranged in the present embodiment, and 25 layers of stripping section, 25 layers of rectifying section, the fume heating of You Jingta 4 is protected
Normal pressure or micro-negative pressure operation are held, controls light wine within 18 degree, reflux wine degree does not surpass 30 degree, and the water scrubber 3 generally passes through
Tower top washs water and controls wine degree, and 3 washing water of water scrubber reduces wine degree using smart 4 waste water of tower circulation washing, such wine degree from
It is conducive to exclude intermediate impurity fusel oil normal propyl alcohol, isoamyl alcohol, isobutanol theoretically, the impurity volatilization such as fusel oil after reduction wine degree
Coefficient is greater than 1, so that vaporization is discharged at the top of water scrubber 3, also functions to critically important effect simultaneously for the sense organ of product.
Embodiment 7
A kind of novel destilling tower for being not required to extract industrial alcohol, including thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column
5 and recovery tower 6；
The thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4 and methanol column 5 are sequentially connected；
The recovery tower 6 is connected to thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column 5, the thick tower 1, aldehyde tower 2, water
It washes tower 3, smart tower 4, the partial impurities in methanol column 5 and enters recovery tower 6, the alcohol conveying that part is impure in the recovery tower 6
It is purified again to aldehyde tower 2 and water scrubber 3.
Further, such as Fig. 3, the essence tower 4 is by being set as at least 85 layers, wherein at least 18 layers of stripping section, and rectifying section is extremely
It is 67 layers few, take wine mouth to be set as at least 81 layers or more and be not top, it is highest tower in all destilling towers that smart tower 4, which is arranged,
General to keep smart 4 bottom of tower at 139 DEG C or so, it is 85 layers that smart tower 4 is arranged at 110 DEG C or so, in the present embodiment for top, stripping section
It 18 layers, 67 layers of rectifying section, takes wine mouth to be arranged at 81 layers, the lower impurity of the boiling point of top is avoided to be mixed into the wine of taking-up, one
As for, when smart tower 4 is set as 85 to 90 layers, wine mouth is taken to be correspondingly arranged at 81 to 86 layers, setting in this way can be controlled effectively and be adopted
The quality of alcohol out effectively controls intermediate impurity and is not carried in finished wine, and smart 4 end alcohol of the cold liquid rich in impurity of tower is existing
3 30 layers or so of middle part of water scrubber can be entered by having in technology, the present invention is changed to separate low-boiling point material again into 2 return tank of aldehyde tower
And methanol, smart 4 pressure of tower are the main heat sources of whole system, smart 4 pressure of tower will be according to production by extraneous steam indirect heating
The appropriate adjustment in scope of design such as amount, quality, each tower operating condition.
Embodiment 8
A kind of novel destilling tower for being not required to extract industrial alcohol, including thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column
5 and recovery tower 6；
The thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4 and methanol column 5 are sequentially connected；
The recovery tower 6 is connected to thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column 5, the thick tower 1, aldehyde tower 2, water
It washes tower 3, smart tower 4, the partial impurities in methanol column 5 and enters recovery tower 6, the alcohol conveying that part is impure in the recovery tower 6
It is purified again to aldehyde tower 2 and water scrubber 3.
Further, such as Fig. 4, the methanol column 5 is set as at least 65 layers, and 4 fume of You Jingta heating, tower feeds layer setting
It is at least 50 layers or more and is not top, setting methanol column 5 is 65 layers in the present embodiment, and the charging layer of methanol column 5 is set as
50 layers, bottom end stripping section space and time are increased, can effectively be controlled for excluding methanol contaminant, the cold liquid in end is typically designed
To extract industrial alcohol, that is, methanol, this process modification is that aldehyde tower 2 flows back, and carries out separating-purifying again, effectively exclusion methanol and low
Boiling contaminants.
Embodiment 9
A kind of novel destilling tower for being not required to extract industrial alcohol, including thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column
5 and recovery tower 6；
The thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4 and methanol column 5 are sequentially connected；
The recovery tower 6 is connected to thick tower 1, aldehyde tower 2, water scrubber 3, smart tower 4, methanol column 5, the thick tower 1, aldehyde tower 2, water
It washes tower 3, smart tower 4, the partial impurities in methanol column 5 and enters recovery tower 6, the alcohol conveying that part is impure in the recovery tower 6
It is purified again to aldehyde tower 2 and water scrubber 3.
Further, as Fig. 5, the recovery tower 6 are set as at least 65 layers, wherein the stripping section of lower layer is set as at least 18
Layer, the rectifying section on upper layer is set as at least 47 layers, and by flash steam and direct steam heating, the recovery tower in the present embodiment is set as
65 layers, 18 layers of stripping section, 47 layers of rectifying section, general normal pressure control, column plate is conducive to control the wine recycled in recovery tower 6 after increasing
Smart final product quality, so that it is guaranteed that product quality.30 layers of water inlet of wine design are adopted, this technique is changed into aldehyde tower 2, generally 52 layers of left side
The right side is more advantageous to removal impurity.
The above, only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, it is any
Those skilled in the art within the technical scope disclosed by the invention, can without the variation that creative work is expected or
Replacement, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be limited with claims
Subject to fixed protection scope.
Claims (9)
1. a kind of novel destilling tower for being not required to extract industrial alcohol, including thick tower (1), aldehyde tower (2), water scrubber (3), smart tower (4),
Methanol column (5) and recovery tower (6), it is characterised in that:
The thick tower (1), aldehyde tower (2), water scrubber (3), smart tower (4) and methanol column (5) are sequentially connected；
The recovery tower (6) is connected to thick tower (1), aldehyde tower (2), water scrubber (3), smart tower (4), methanol column (5), the thick tower
(1), aldehyde tower (2), water scrubber (3), smart tower (4), the partial impurities in methanol column (5) enter recovery tower (6), the recovery tower
(6) the impure alcohol in part is transported to aldehyde tower (2) in and water scrubber (3) is purified again.
2. a kind of novel destilling tower for being not required to extract industrial alcohol according to claim 1, it is characterised in that: the thick tower
(1) condenser system controls thick tower (1) in highest natural temperature next top pressure controllable and in -65kpa hereinafter, bottom temp control
System is being no more than 83 DEG C.
3. a kind of novel destilling tower for being not required to extract industrial alcohol according to claim 1, it is characterised in that: the thick tower
(1) stripping section of lower layer has at least 25 layers of column plate, and the rectifying section on upper layer has at least 6 layers of column plate, by water scrubber (3) fume and methanol
The fume of tower (5) heats jointly.
4. a kind of novel destilling tower for being not required to extract industrial alcohol according to claim 1, it is characterised in that: the aldehyde tower
(2) at least 60 layers of column plate are set as, wherein at least 25 layers of stripping section, at least 35 layers of rectifying section, You Jingta (4) tail gas heating or first
Alcohol tower (5) tail gas heating, works under negative pressure.
5. a kind of novel destilling tower for being not required to extract industrial alcohol according to claim 1, it is characterised in that: the aldehyde tower
(2) tower reflux ratio ensures that alcohol of the reflux wine degree in 95 degree or more, recovery tower (6) rich in impurity comes 52 layers of aldehyde tower again
It is above to carry out secondary separation purification.
6. a kind of novel destilling tower for being not required to extract industrial alcohol according to claim 1, it is characterised in that: the washing
Tower (3) is set as at least 50 layers, wherein at least 25 layers of stripping section, and at least 25 layers of rectifying section, the fume heating of You Jingta (4) is protected
Normal pressure or micro-negative pressure operation are held, controls light wine within 18 degree, reflux wine degree does not surpass 30 degree.
7. a kind of novel destilling tower for being not required to extract industrial alcohol according to claim 1, it is characterised in that: the essence tower
(4) by being set as at least 85 layers, wherein at least 18 layers of stripping section, at least 67 layers of rectifying section, take wine mouth be set as at least 81 layers with
It above and is not top.
8. a kind of novel destilling tower for being not required to extract industrial alcohol according to claim 1, it is characterised in that: the methanol
Tower (5) is set as at least 65 layers, and You Jingta (4) fume heating, tower charging layer is set as at least 50 layers or more and is not top.
9. a kind of novel destilling tower for being not required to extract industrial alcohol according to claim 1, it is characterised in that: the recycling
Tower (6) is set as at least 65 layers, and wherein the stripping section of lower layer is set as at least 18 layers, and the rectifying section on upper layer is set as at least 47
Layer, by flash steam and direct steam heating.
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| CN113041637A (en) * | 2021-04-01 | 2021-06-29 | 沧州信联化工有限公司 | Distillation device for tetramethylammonium hydroxide production and use method thereof |
| CN114642894A (en) * | 2022-03-14 | 2022-06-21 | 肥城金塔酒精化工设备有限公司 | Distillation system and distillation method for producing super-high grade alcohol by six-tower three-effect differential pressure distillation |
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