CN207918722U - The aqueous continuous adsorption dewatering device of light alcohol - Google Patents
The aqueous continuous adsorption dewatering device of light alcohol Download PDFInfo
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- CN207918722U CN207918722U CN201721876255.XU CN201721876255U CN207918722U CN 207918722 U CN207918722 U CN 207918722U CN 201721876255 U CN201721876255 U CN 201721876255U CN 207918722 U CN207918722 U CN 207918722U
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Abstract
A kind of aqueous light continuous adsorption dewatering device of alcohol, described device include：Adsorption dewatering unit, slurry centrifugal separation unit and adsorbent dry regeneration unit, wherein the adsorption dewatering unit includes raw material pump and dehydrating kettle；The slurry centrifugal separation unit includes centrifugal separator and wet adsorbent conveying device；The adsorbent drying regeneration unit includes drying machine, dry adsorbent conveying device, humidity condenser and lime set collecting tank.Adsorption dewatering and adsorbent reactivation in the utility model are continuous process, easy to operate, and sorbent circulation utilizes, and alcohol loss late is low, save production cost, have larger energy economy ＆ environment benefit.
Description
Technical field
The utility model belongs to Alcohol-water separation field, and in particular to a kind of aqueous light continuous adsorption dewatering device of alcohol.
Background technology
The light alcohol of F- T synthesis by-product contains a certain amount of water, and water forms alcohol-water azeotropic mixture with most of component in light alcohol, it is difficult to
It is removed by conventional rectification method, limits the utilization that lightweight mixes alcohol.Preferably a kind of adsorbent of the utility model, reasonable design stream
Journey removes the water in aqueous light alcohol with continuous adsorption dewatering method, can be used for removing the moisture in alcohol-water mixture, produce anhydrous
Low-carbon mixes alcohol.
In the ICL for Indirect Coal Liquefaction of F- T synthesis route, a large amount of aqueous phase by-product, water phase by-product are inevitably generated
For object after over-segmentation oxygen-containing organic compound, remaining mixture is that aqueous lightweight mixes alcohol, including methanol, ethyl alcohol, normal propyl alcohol, isopropyl
The mixed liquor of alcohol, n-butanol, isobutanol and a small amount of amylalcohol and water, wherein all forming azeotropic, alcohol-water azeotropic body with water in addition to methanol
The presence of system limits the utilization that lightweight mixes alcohol, if aqueous light alcohol direct emission can be caused the serious wasting of resources and environment
Pollution.It removes the moisture that aqueous lightweight is mixed in alcohol and obtains anhydrous low-carbon mixed alcohol, there is huge Significance for Environment and economic implications.Nothing
Water low carbon mixed alcohol has broad application prospects, and summing up mainly has the following aspects：1) it is used as alternative fuel；2) it cleans
Gasoline additive；3) it is used as liquefied petroleum gas (LPG) substitute；4) directly as general chemistry solvent etc.；5) chemicals and change
Work raw material；6) further separation, is made single methanol.
Currently, the conventional method of the dehydration of alcohol-water azeotropic system mainly has：
1) azeotropic distillation (constant boiling rectification method)；Third component is added in alcohol-water azeotropic system and forms new system, changes
Relative volatility in substance system between each component, and a kind of component in third component and substance system forms minimum azeotropic mixture,
It is steamed from tower top in the form of new azeotropic mixture, alcohol-water separation is realized with this and is dehydrated；
2) extraction fractional distillation；Third component is added in alcohol-water azeotropic system and forms new system, changes each group in substance system
/ relative volatility, third component with high boiling liquid from bottom of tower be discharged, alcohol-water separation is realized with this and is dehydrated；
3) membrane separation process；The upstream face of the component molecular dissolving or absorption and film easily permeated, then in mixture
Component permeable pressure head is motive force by film, then from the downstream desorption of film, and film downstream is vacuum system, and the both sides partial pressure of film is passes
Matter motive force, vaporizes through object in vacuum system and the collection that is condensed, and realizes alcohol-water separation with this and is dehydrated；
4) it is interrupted regenerated molecular sieve absorption method；Molecular sieve is the solid absorbent for having porous network structure, is generally tied
The silicate or alumino-silicate of crystalline state.Each molecular sieve has specific uniform aperture, only allows point smaller than its pore size
Son passes through, and by those macromolecular substances exclusions, to play the role of " sieving ".Detach alcohol-water object system generally use
3A molecular sieves, the i.e. pore size of molecular sieve are 0.3nm.Because hydrone diameter is about 2.65A (1A=0.1nm), and alcohol point
Sub- diameter is bigger than molecular sieve micro-pore diameter；In addition, hydrone has very strong positron-electron density, there are highly polar with molecular sieve
Sucking action, such hydrone can enter molecular sieve and is firmly adsorbed on inside molecular sieve, and alcohol molecule is then blocked in
Outside, water and alcohol are selectively adsorbing and separating to realize.Molecular sieve has certain adsorption capacity, after reaching adsorption saturation,
Adsorption capacity is lost, needs to regenerate molecular sieve, removes the water of absorption, makes adsorbent of molecular sieve that there is adsorption energy again
Power.Conventional molecular sieve adsorption-regeneration process is intermittent operation process.
The prior art has the following disadvantages：
1) azeotropic distillation (constant boiling rectification method)：Technical maturity is widely used, but nonvariant boiling reagent is produced from top of tower, energy consumption
It is higher；New component is introduced, has residual in product；And the use of common nonvariant boiling reagent benzene is harmful to operating personnel's body, therefore will be by
Gradually replaced by environmentally protective new process；
2) extraction fractional distillation：Extractant is produced from tower reactor, and energy consumption is smaller, but requires extractant recovery tower harsh, solvent
There is partial loss, and introduce new component, has residual in product；
3) membrane separation process：Low energy consumption, alcohol high selectivity, but UF membrane coefficient and flux are small, and the service life is shorter, of high cost, skill
Therefore the non-full maturity of art is not used widely；
4) it is interrupted regenerated molecular sieve absorption method：Simple for process, it is environmentally protective not introduce novel substance process, products obtained therefrom purity
It is higher, but regenerating molecular sieve process is batch process, need it is multi-tower combined just can guarantee continuous production, investment is higher, and molecule
Sieve cost is higher, and regeneration temperature is higher, and molecular sieve can be lost in careless manipulation.
Utility model content
In order to overcome the defects of the prior art, the utility model proposes a kind of aqueous light continuous adsorption dewatering device of alcohol,
With continuous absorption and regeneration method, the azeotropic between alcohol-water is abolished, the water in the aqueous light alcohol of F- T synthesis by-product is removed, obtains
To water-free low carbon mixed alcohol.
The utility model provides a kind of aqueous light continuous adsorption dewatering device of alcohol, including：Adsorption dewatering unit, slurry from
Heart separative element and adsorbent dry regeneration unit；
Wherein, the adsorption dewatering unit includes raw material pump and dehydrating kettle, the outlet and the dehydrating kettle that the raw material pumps
Material inlet connected by pipeline, adsorbent import is provided at the top of the dehydrating kettle, bottom is provided with slurry outlet；
The slurry centrifugal separation unit includes centrifugal separator and wet adsorbent conveying device, the centrifugal separator
Top is provided with feed slurry inlet and is dehydrated light alcohol outlet, and bottom is provided with wet slag outlet, the feed slurry inlet and the dehydrating kettle
Slurry outlet by pipeline be connected, the wet adsorbent conveying device be provided with wet slag import and wet slag outlet, the centrifugation
The wet slag outlet of seperator is connected with the wet slag import of the wet adsorbent conveying device；
The adsorbent drying regeneration unit includes that drying machine, dry adsorbent conveying device, humidity condenser and lime set are received
Collect tank, is provided with damp exit and wet slag import at the top of the drying machine, bottom is provided with dry adsorbent outlet, the drying
The wet slag import of machine is connected with the outlet of the wet slag of the wet adsorbent conveying device, and the dry adsorbent outlet passes through the dry suction
Attached dose of conveying device is connected with the adsorbent import of the dehydrating kettle, the damp exit of the drying machine and the humidity condenser
Moisture import be connected, the condensate outlet of the humidity condenser is connected with the lime set import of the lime set collecting tank, it is described coagulate
Liquid collects pot bottom and is provided with condensate outlet, and the bottom of the drying machine is provided with carrier gas inlet, and carrier gas is used for wet adsorbent
In water and a small amount of light alcohol be loaded into the humidity condenser.
Preferably, the dehydrating kettle may include temperature control device, pressure control device, blender and blender control dress
It sets.
Preferably, it is provided with flow controller on the pipeline between the raw material pump and the dehydrating kettle.
Preferably, the wet adsorbent conveying device and the dry adsorbent conveying device are screw(-type) feeder.
Preferably, the dehydrating kettle is external jacket heating type electric stirring kettle, and the blender of the dehydrating kettle is turbine type
Blender.
Preferably, the centrifugal separator is nozzle butterfly centrifugal seperator.
Preferably, the drying machine is hermetic type tray drier.
Preferably, the adsorbent is zeolite.
Compared with prior art, the utility model has the advantages that：
(1) compared with azeotropic distillation and extraction fractional distillation, novel substance is not introduced, process is green, and product purity is higher；
(2) compared with membrane separation process, technology maturation is easy to industrialize using conveniently；
(3) compared with super regeneration molecular sieve adsorption, it is porous to select the preferable zeolites of cheap dehydrating effect
Material is adsorbent, reduces cost of material；
(3) adsorption dewatering and adsorbent reactivation are continuous process, easy to operate, and sorbent circulation utilizes, and alcohol loss late is low,
Production cost is saved, there is larger energy economy ＆ environment benefit.
Description of the drawings
Fig. 1 is the aqueous light continuous adsorption dewatering schematic device of alcohol of the utility model one embodiment.
Reference sign：
1- raw materials pump；2- dehydrating kettles；3- centrifugal separators；The wet adsorbent conveying devices of 4-；5- drying machines；The dry adsorbents of 6-
Conveying device；7- humidity condensers；8- lime set collecting tanks.
Specific implementation mode
To make the purpose of this utility model, technical solution and advantage be more clearly understood, below in conjunction with specific embodiment, and
With reference to attached drawing, the utility model is described in further detail.
The utility model proposes a kind of aqueous light continuous adsorption dewatering devices of alcohol, as shown in Figure 1.
The dehydration device includes：Adsorption dewatering unit, slurry centrifugal separation unit and adsorbent dry regeneration unit.
Adsorption dewatering unit includes raw material pump 1 and dehydrating kettle 2, and the outlet of raw material pump 1 and the material inlet of dehydrating kettle 2 pass through
Pipeline connects, and flow controller can be provided on pipeline.The top of dehydrating kettle 2 is provided with adsorbent import, and bottom is provided with
Slurry outlet.Dry adsorbent enters dehydrating kettle 2 by adsorbent import, including the slurry of the light alcohol of dehydration and adsorbent passes through slurry
Outlet discharge.Dehydrating kettle 2 can also include temperature control device, pressure control device, blender and blender control device, blender
It can be turbine agitator etc..
Slurry centrifugal separation unit includes centrifugal separator 3 and wet adsorbent conveying device 4, the top of centrifugal separator 3
It is provided with feed slurry inlet and is dehydrated light alcohol outlet, bottom is provided with wet slag outlet, and the slurry outlet of feed slurry inlet and dehydrating kettle 2 is logical
Piping is connected, including the slurry of the light alcohol of dehydration and adsorbent is continuously added to centrifuge in a manner of flowing automatically from 2 bottom of dehydrating kettle
Machine 3 is dehydrated light alcohol by being dehydrated light alcohol outlet exclusion, and the wet adsorbent for being adsorbed with water and a small amount of light alcohol exports row by wet slag
Go out.Wet adsorbent conveying device 4 is provided with wet slag import and wet slag outlet.Wet slag outlet and the wet adsorbent of centrifugal separator 3
The wet slag import of conveying device 4 is connected.Wet adsorbent conveying device 4 can be screw(-type) feeder etc..
Dehydrating kettle 2 can be external jacket heating type electric stirring kettle, and the blender of dehydrating kettle 2 can be that turbine type stirs
Device.
Centrifugal separator 3 can be with the nozzle butterfly centrifugal seperator of continuous discharging slag.
Adsorbent drying regeneration unit includes that drying machine 5, dry adsorbent conveying device 6, humidity condenser 7 and lime set are collected
Tank 8, drying machine 5 be used for by wet adsorbent water and light alcohol heating removing, top be provided with damp exit and wet slag import,
Bottom is provided with dry adsorbent outlet, and the wet slag import of drying machine 5 is connected with the outlet of the wet slag of wet adsorbent conveying device 4, does
Adsorbent outlet is connected by dry adsorbent conveying device 6 with the adsorbent import of dehydrating kettle 2, the damp exit of drying machine 5 with
The moisture import of humidity condenser 7 is connected, and the condensate outlet of humidity condenser 7 is connected with the lime set import of lime set collecting tank 8.It is solidifying
8 bottom of liquid collecting tank is provided with condensate outlet, the light alcoholic solution for recoverable to be discharged.The bottom of closed drying machine 5
It is provided with carrier gas inlet, the water in wet adsorbent is loaded into humidity condenser 7 by carrier gas with a small amount of light alcohol, and exhaust gas is through lime set collecting tank
The exhaust outlet discharge at 8 tops.Dry adsorbent conveying device 6 can be screw(-type) feeder etc..
Drying machine 5 can be hermetic type tray drier.
The workflow of the aqueous light continuous adsorption dewatering device of alcohol of the utility model is as follows：
Aqueous light alcohol and dry adsorbent are added in dehydrating kettle, are sufficiently stirred, makes the water in aqueous light alcohol by adsorbent
Absorption is obtained comprising the slurry for being dehydrated light alcohol and the wet adsorbent for being adsorbed with water and a small amount of alcohol；
Slurry is continuously drained into centrifugal separator, respectively obtains the wet absorption for being dehydrated light alcohol and being adsorbed with water and a small amount of alcohol
Agent；
By the wet adsorbent of separation in drying machine heat drying, remove the water of absorption and a small amount of alcohol, obtain regenerated dry
Dry adsorbent is transmitted back in dehydrating kettle by adsorbent；
It condenses the water of removing and alcohol to obtain condensate liquid.Condensate liquid is the light alcoholic solution of recoverable.
Adsorbent therein is zeolite polyporous materials, and carrier gas is passed through in drying machine will be by water in wet adsorbent and few
It measures and is condensed in light alcohol loading humidity condenser.Carrier gas can be the inert gases such as nitrogen.
Wherein, 0~0.2MPa of operating pressure (gauge pressure G) of dehydrating kettle；Operation temperature is 20~60 DEG C；Agitator speed is
50~100r/min.
The rotating speed of centrifugal separator is 5000~15000r/min.
The operating pressure of drying machine is 0~0.05MPa (gauge pressure G), and operation temperature is 200~300 DEG C, main shaft gyration speed
0.58~2.6r/min.
Particular embodiments described above has carried out into one the purpose of this utility model, technical solution and advantageous effect
Step is described in detail, it should be understood that the foregoing is merely specific embodiment of the utility model, are not limited to this reality
With novel, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all include
It is within the protection scope of the utility model.
Claims (8)
1. a kind of aqueous light continuous adsorption dewatering device of alcohol, including：Adsorption dewatering unit, slurry centrifugal separation unit and adsorbent
Dry regeneration unit；
Wherein, the adsorption dewatering unit includes raw material pump and dehydrating kettle, the original of the outlet and the dehydrating kettle of the raw material pump
Material import is connected by pipeline, adsorbent import is provided at the top of the dehydrating kettle, bottom is provided with slurry outlet；
The slurry centrifugal separation unit includes centrifugal separator and wet adsorbent conveying device, the top of the centrifugal separator
It is provided with feed slurry inlet and is dehydrated light alcohol outlet, bottom is provided with wet slag outlet, the material of the feed slurry inlet and the dehydrating kettle
Slurry outlet is connected by pipeline, and the wet adsorbent conveying device is provided with wet slag import and wet slag outlet, the centrifugation
The wet slag outlet of machine is connected with the wet slag import of the wet adsorbent conveying device；
Adsorbent drying regeneration unit includes drying machine, dry adsorbent conveying device, humidity condenser and lime set collecting tank,
Damp exit and wet slag import are provided at the top of the drying machine, bottom is provided with dry adsorbent outlet, the drying machine
Wet slag import is connected with the outlet of the wet slag of the wet adsorbent conveying device, and the dry adsorbent outlet passes through the dry adsorbent
Conveying device is connected with the adsorbent import of the dehydrating kettle, and the damp exit of the drying machine is wet with the humidity condenser
Gas import is connected, and the condensate outlet of the humidity condenser is connected with the lime set import of the lime set collecting tank, and the lime set is received
Collection pot bottom is provided with condensate outlet, and the bottom of the drying machine is provided with carrier gas inlet, and carrier gas is used for will be in wet adsorbent
Water and a small amount of light alcohol are loaded into the humidity condenser.
2. the aqueous light continuous adsorption dewatering device of alcohol as described in claim 1, which is characterized in that the dehydrating kettle further includes temperature
Control device, pressure control device, blender and blender control device.
3. the aqueous light continuous adsorption dewatering device of alcohol as described in claim 1, which is characterized in that the raw material pump takes off with described
It is provided with flow controller on pipeline between water kettle.
4. the aqueous light continuous adsorption dewatering device of alcohol as described in claim 1, which is characterized in that the wet adsorbent conveying dress
It is screw(-type) feeder to set with the dry adsorbent conveying device.
5. the aqueous light continuous adsorption dewatering device of alcohol as described in claim 1, which is characterized in that the dehydrating kettle is external jacket
The blender of heating type electric stirring kettle, the dehydrating kettle is turbine agitator.
6. the aqueous light continuous adsorption dewatering device of alcohol as described in claim 1, which is characterized in that the centrifugal separator is spray
Mouth butterfly centrifugal seperator.
7. the aqueous light continuous adsorption dewatering device of alcohol as described in claim 1, which is characterized in that the drying machine is hermetic type
Tray drier.
8. the aqueous light continuous adsorption dewatering device of alcohol as described in claim 1, which is characterized in that the adsorbent is zeolite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721876255.XU CN207918722U (en) | 2017-12-28 | 2017-12-28 | The aqueous continuous adsorption dewatering device of light alcohol |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721876255.XU CN207918722U (en) | 2017-12-28 | 2017-12-28 | The aqueous continuous adsorption dewatering device of light alcohol |
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| CN207918722U true CN207918722U (en) | 2018-09-28 |
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