CN109776267A - A method of utilizing residual alcohol in the multi-function extractor recycling dregs of a decoction - Google Patents
A method of utilizing residual alcohol in the multi-function extractor recycling dregs of a decoction Download PDFInfo
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- CN109776267A CN109776267A CN201711110284.XA CN201711110284A CN109776267A CN 109776267 A CN109776267 A CN 109776267A CN 201711110284 A CN201711110284 A CN 201711110284A CN 109776267 A CN109776267 A CN 109776267A
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Abstract
A method of using alcohol is remained in the multi-function extractor recycling dregs of a decoction, first Dry recovery: opening the steam valve being passed through in extractor, is passed directly into steam to dregs of a decoction bottom and carries out steam distillation recovered alcohol, distillates alcohol by cooling system and enters basin；Alcohol concentration to be distillated is to stop heating equal to or slightly lower than after (about ten percentage points) extraction alcohol concentration used；Hydrometallurgic recovery again: drinking water or 50-80 DEG C of steam condensate (SC) is added to submergence dregs of a decoction surface from pot bottom is extracted, open the steam valve led in collet, boiling is heated and kept using periphery and carries out residual alcohol recycling, it is recycled under the conditions of normal pressure or micro-vacuum, distillates alcohol by cooling system and enter basin；When distillating alcohol concentration is 2-10%, stop heating, recovered alcohol terminates.The rate of recovery of the present invention is high, realizes the reuse of alcohol and recycles to greatest extent；Turn waste into wealth, meets very much the requirement of national energy conservation and emission reduction.It compares traditional recovery method to lack recovery time 3-6 hours, reduces cost recovery.
Description
Technical field
The method that alcohol is remained in the multi-function extractor recycling dregs of a decoction is utilized the present invention relates to a kind of in field of traditional Chinese medicine pharmacy.
Background technique
At present in Chinese materia medica preparation production process, mostly use alcohol as Chinese medicine effective ingredient Extraction solvent, in alcohol
Alcohol recycle after extraction is one of very important process.The reason is that will not only be made if recovered alcohol method is improper
Seriously at alcohol recycle higher cost, alcohol loss, to environmental protection and social safety, there is also biggish hidden danger.The dregs of a decoction at present
Recovered alcohol, so that alcohol recycle is complete, reduces alcohol loss mainly using water boiling recycling is added in the middle.However due to recycling
Water is added in journey makes water and alcohol form azeotrope liquid, and recovery time reaches 6-8 hours, and the alcohol concentration recycled out is lower, very
It is difficult directly to use, it still needs to reuse atmospheric distillation tower progress redistillation, to improve alcohol concentration, so that alcohol use cost occupies
It is high not under, loss is consequently increased.
Summary of the invention
The technical problem to be solved by the present invention is to be that providing a kind of recycle in the dregs of a decoction using multi-function extractor remains wine
The method of essence.
The technical scheme of the present invention is realized as follows: using concentration for 70-85% alcoholic solution as Extraction solvent into
Row extracts, and drains extracting solution, carries out hydrometallurgic recovery after Dry recovery, the specific steps are as follows:
(1) Dry recovery: opening the steam valve being passed through in extractor, is passed directly into steam to dregs of a decoction bottom and carries out water steaming
Steam distillation recovered alcohol distillates alcohol by cooling system and enters basin；After alcohol concentration to be distillated is 60-85%, stop adding
Heat；
The alcohol concentration that distillates is 60-85%, need to be corresponding with the concentration of extraction alcohol: i.e. with certain density
Alcoholic extraction, then alcohol concentration to be distillated is equal to or slightly lower than after (about ten percentage points) extraction alcohol concentration used
Stop heating；Such as it can stop heating after then alcohol concentration to be distillated is 60-70% with 70% alcoholic extraction；Such as with 85% wine
Essence is extracted, then alcohol concentration to be distillated is 75-85%, can stop heating.
Since such medicinal material is spire or powdery type, Dry recovery ability is general, and the rate of recovery is up to 70% or more.
(2) drinking water or 50-80 DEG C of steam condensate (SC) hydrometallurgic recovery: is added to submergence dregs of a decoction table from pot bottom is extracted
The steam valve led in collet is opened in face, is heated and kept boiling using periphery and is carried out residual alcohol recycling, normal pressure or micro- true
It is recycled under empty condition, distillates alcohol by cooling system and enter basin；When distillating alcohol concentration is 2-10%, stop adding
Heat, recovered alcohol terminate.
Extractor used in the present invention is conventional multi-function extractor, as long as being equipped with endless belt extracting pot bottom
Hole steam pipe.
Up to 95% or more, recovered alcohol concentration is can be improved method recovery efficiency of the invention in Dry recovery, makes to recycle
Ethyl alcohol out can direct plunge into use, be not necessarily to redistillation；Hydrometallurgic recovery can ensure alcohol recycle rate, realize that the repetition of alcohol makes
With with recycle to the maximum extent；Recyclable about two kiloton of alcohol every year, is worth about 10,000,000 yuan or so；Not only reduce wave
Take and environmental pollution, and take full advantage of valuable alcohol energy resources, turns waste into wealth, meet very much national energy conservation and emission reduction
It is required that.It compares traditional recovery method to lack recovery time 3-6 hours, can not only effectively shorten the production cycle, but also effectively
Steam energy has been saved, cost recovery is reduced.
Present invention may also apply to the alcohol recycles of other field various concentrations.
Specific embodiment
Embodiment
After 1000 kilograms of ginkgo leaves are terminated with 80% alcoholic extraction and medical fluid drains, spirituosity (95% concentration of folding) in slag
About 1200L
(1) Dry recovery: opening the steam valve being passed through in extractor, is passed directly into steam to dregs of a decoction bottom and carries out water steaming
Steam distillation recovered alcohol distillates alcohol by cooling system and enters alcohol in high concentration basin；Alcohol concentration to be distillated is 70-75%
When, stop heating, 95% about 840L of recycling 80% alcohol about 1000L folding can be directly as next group Extraction solvent.
If medicinal material is spire or powdery type, Dry recovery ability is general, and the rate of recovery is up to 70% or more；If medicinal material is
Particle or medicine materical crude slice class, Dry recovery ability is stronger, and the rate of recovery is up to 80% or more.
(2) it hydrometallurgic recovery: from the steam condensate (SC) for extracting 50-80 DEG C of pot bottom addition to submergence dregs of a decoction surface, opens logical
Steam valve into collet heats and keeps boiling using periphery and carries out residual alcohol recycling, and opening micro-vacuum makes vacuum degree
It is maintained at 0.01Mpa and enters basin by cooling system hereinafter, distillating alcohol；When distillating alcohol concentration is 2-10%, stop
Heating, recovered alcohol terminate.Recovered alcohol about 1200L altogether, concentration 25%, 95% alcohol of folding is about 315L, by destilling tower
Distillation in 1.5 hours obtains 90% alcohol 310L, the about 290L of folding 95%.
The alcohol concentration of process recycling is only 20-40%, needs to re-start distillation, can just reuse；Wet process
In removal process, need repeatedly to add appropriate steam condensate (SC) on a small quantity to keep submergence medicinal material, to slag tap；Since the dregs of a decoction compare
Carefully, alcohol distributes relatively difficult, can suitably keep micro-vacuum, to reduce levels pressure, improves recovery efficiency.
It is 1130L, the rate of recovery 94.2% that the above process, which amounts to recovered alcohol,.
Comparative example
Conventional alcohol recovery method:
After 1000 kilograms of ginkgo leaves are terminated with 80% alcoholic extraction and medical fluid drains, spirituosity (95% concentration of folding) in slag
About 1200L adds drinking water to submergence dregs of a decoction surface, the steam valve led in collet is opened, using periphery from pot bottom is extracted
It heats and keeps boiling and carries out residual alcohol recycling, opening micro-vacuum makes vacuum degree be maintained at 0.01Mpa hereinafter, distillating alcohol warp
Supercooling system enters basin；When distillating alcohol concentration is 0-10%, stop heating, recovered alcohol terminates.Recovered alcohol altogether
About 2200L, concentration 50% obtain 90% alcohol 1160L using destilling tower distillation in 5 hours, and the about 1100L of folding 95% is returned
Yield is 91.7%.
Comparative analysis is as it can be seen that carry out the alcohol recycle in ginkgo leaf residue, increasing using the method that dry method, hydrometallurgic recovery combine
Add ethyl alcohol yield about 30L, improve 2.5 percentage points of the rate of recovery, and steam spent by reducing distillation column distillation 4 hours and
Manpower, than about 30,000 yuan/month of 1 save the cost of comparative example.
Claims (1)
1. a kind of utilize the method for remaining alcohol in the multi-function extractor recycling dregs of a decoction, which is characterized in that the method is dry
Hydrometallurgic recovery is carried out after method recycling, is comprised the following steps that
(A) Dry recovery: opening the steam valve being passed through in extractor, is passed directly into steam to dregs of a decoction bottom and carries out water vapour steaming
Recovered alcohol is evaporated, alcohol is distillated by cooling system and enters basin；Alcohol concentration to be distillated is equal to or slightly lower than extraction used
After concentration of alcohol, stop heating；
(B) hydrometallurgic recovery: drinking water or 50-80 DEG C of steam condensate (SC) is added to submergence dregs of a decoction surface from pot bottom is extracted, beats
The steam valve into collet is opened, boiling is heated and kept using periphery and carries out residual alcohol recycling, normal pressure or micro-vacuum item
It is recycled under part, distillates alcohol by cooling system and enter basin；When distillating alcohol concentration is 2-10%, stop heating,
Recovered alcohol terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711110284.XA CN109776267A (en) | 2017-11-12 | 2017-11-12 | A method of utilizing residual alcohol in the multi-function extractor recycling dregs of a decoction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711110284.XA CN109776267A (en) | 2017-11-12 | 2017-11-12 | A method of utilizing residual alcohol in the multi-function extractor recycling dregs of a decoction |
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| CN109776267A true CN109776267A (en) | 2019-05-21 |
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| CN201711110284.XA Pending CN109776267A (en) | 2017-11-12 | 2017-11-12 | A method of utilizing residual alcohol in the multi-function extractor recycling dregs of a decoction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302898A (en) * | 2020-03-27 | 2020-06-19 | 苏州浙远自动化工程技术有限公司 | Method for recovering ethanol in medicine residues |
| CN113501745A (en) * | 2021-07-22 | 2021-10-15 | 山东明仁福瑞达制药股份有限公司 | Do benefit to and evaporate sediment and judge that to evaporate jar that sediment retrieved alcohol terminal point |
-
2017
- 2017-11-12 CN CN201711110284.XA patent/CN109776267A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302898A (en) * | 2020-03-27 | 2020-06-19 | 苏州浙远自动化工程技术有限公司 | Method for recovering ethanol in medicine residues |
| CN113501745A (en) * | 2021-07-22 | 2021-10-15 | 山东明仁福瑞达制药股份有限公司 | Do benefit to and evaporate sediment and judge that to evaporate jar that sediment retrieved alcohol terminal point |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190521 |