CN1071198A - A kind of acidity control method of distillage filtrate - Google Patents
A kind of acidity control method of distillage filtrate Download PDFInfo
- Publication number
- CN1071198A CN1071198A CN 91108184 CN91108184A CN1071198A CN 1071198 A CN1071198 A CN 1071198A CN 91108184 CN91108184 CN 91108184 CN 91108184 A CN91108184 A CN 91108184A CN 1071198 A CN1071198 A CN 1071198A
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- China
- Prior art keywords
- filtrate
- vinasse
- calcium oxide
- organic acid
- alcohol
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
After can the full reuse production technique of distillage filtrate reach unlimited circulation.It is still normal to ferment.The yield of liquor and the quality of alcohol do not reduce.Gordian technique is which type of method to regulate reuse pH value of filtrate and the organic acid content that reduces in the reuse filtrate with.The long-pending principle of concentration when applied chemistry neutral principle of the present invention and organic acid form the difficulty soluble salt precipitation, before or after the solid-liquid separation of vinasse, add an amount of calcium oxide material, stir, make the part organic acid generate calcium precipitation, control pH value satisfies the requirement of the water that feeds intake.Enforcement of the present invention is simple and convenient, and expense is low, can guarantee the practical of " vinasse coarse filtration liquid total reflux biomass to alcohol conversion process " effectively.
Description
The present invention relates to not have the biomass to alcohol conversion process of useless poor discharging, the additive of especially a kind of " vinasse coarse filtration liquid total reflux biomass to alcohol conversion process ".
The discharging of improvement vinasse, the environmental pollution that the elimination vinasse cause is the problem that domestic and international grain distillery presses for solution, the enforcement of " vinasse coarse filtration liquid total reflux biomass to alcohol conversion process " can be eliminated the environmental pollution that vinasse cause.But the ammoniacal liquor that this technology is added can not effectively be controlled organic acid and mineral acid content in the coarse filtration liquid, has limited the reuse number of times of filtrate, has increased the Alcohol Production cost.Purpose of the present invention is exactly to seek a kind of additive can control back pH value in the filtrate most effectively, makes the filtrate recycle number of times unrestricted.
The present invention is in the applied chemistry and principle and the organic acid solubility product principle when forming the difficulty soluble salt precipitation.In alcoholic fermentation process, being accompanied by multiple organic acid generates, in adopting " vinasse coarse filtration liquid total reflux biomass to alcohol conversion process ", increase along with full reuse number of times, the continuous accumulated concentrations of organic acid increases, distillery yeast can not normally be fermented, cause and give birth to acid significantly, going out rate reduces, the bad phenomenon that alcohol quality descends, after interpolation is the material of major ingredient with the calcium oxide, make the organic acid that produces in the fermenting process form the calcium precipitation of indissoluble, the organic acid content that remains in the distillage filtrate is subjected to the restriction of calcium salt solubility product, full organic acid concentration is no longer risen with the increase of filtrate reuse number of times.
Enforcement of the present invention is simple, convenient, expense is low.Promptly add an amount of calcium oxide material in the filtrate before or after the vinasse solid-liquid separation, stir, the pH value after control is added is in 5.0～7.0 scopes.It is to be no more than the requirement that 5000 grams can satisfy filtrate recycle that general vinasse per ton or filtrate are added calcium oxide.Add calcium oxide do not influence other decolouring, help filter, anticorrosion and suppress the use of additives such as assorted bacterium, acidity control method of the present invention carries out continuously with vinasse coarse filtration liquid total reflux production alcohol, is not subjected to the restriction of filtrate recycle number of times.
Acidity control method of the present invention has the following advantages:
1, calcium oxide source is wide and cost is low, controls sour effect and is better than ammoniacal liquor and sodium hydroxide.
Can play certain filtrating aid function when 2, before the vinasse solid-liquid separation, adding.
3, enriched organic calcium salt content in the feed.
4, be suitable for different digesting technoloys.
In a word, adopt acidity control method of the present invention, can guarantee the practical of " vinasse coarse filtration liquid total reflux biomass to alcohol conversion process " most effectively.
Claims (3)
1, produce the acidity control method of a kind of distillage filtrate of alcohol with starchy material, the invention is characterized in:
A, before the vinasse solid-liquid separation, adding in the vinasse with the calcium oxide is the material of major ingredient, stirs, and makes PH to 6.0～7.0 scopes.
B, after the alcohol solid-liquid separation, adding in the filtrate with the calcium oxide is the material of major ingredient, stirs, and makes pH value to 5.0～7.0 scopes.
C, general vinasse per ton or filtrate are added calcium oxide content for being no more than 5000 grams.
2, according to claim 1, adding calcium oxide is that the material of major ingredient comprises interpolation: unslaked lime, lime block, lime powder, milk of lime, liming, aqua calcis.
3, as claimed in claim 1 or 2, when the material that with the calcium oxide is major ingredient is made additive, also can add decolouring, help filter, anticorrosion, the additive that suppresses other effect such as varied bacteria growing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91108184 CN1071198A (en) | 1991-09-21 | 1991-09-21 | A kind of acidity control method of distillage filtrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91108184 CN1071198A (en) | 1991-09-21 | 1991-09-21 | A kind of acidity control method of distillage filtrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1071198A true CN1071198A (en) | 1993-04-21 |
Family
ID=4909101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91108184 Pending CN1071198A (en) | 1991-09-21 | 1991-09-21 | A kind of acidity control method of distillage filtrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1071198A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD20120051A2 (en) * | 2012-06-11 | 2013-12-31 | Государственный Университет Молд0 | Process for biochemical neutralization of distillery waste |
-
1991
- 1991-09-21 CN CN 91108184 patent/CN1071198A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD20120051A2 (en) * | 2012-06-11 | 2013-12-31 | Государственный Университет Молд0 | Process for biochemical neutralization of distillery waste |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |