DE102008056834A1 - Producing alcohol and biomass, useful e.g. as raw material to produce alcoholic beverage, comprises accomplishing material separation of wine from residual solid body mass and introducing solid body mass to device for producing e.g. biogas - Google Patents

Abstract

Producing alcohol and biomass by fermentation of agricultural raw materials e.g. fruit, comprises: (a) accomplishing a material separation of the produced wine from the remaining solid body mass, after completion of the fermentation process; (b) introducing the solid body mass in a pumpable state to a device for producing biogas and/or bioenergy; and (c) converting the wine separated from the solid body mass into alcohol by distillation and subsequently feeding as raw material for the production of alcohol-containing products.

Description

The The invention relates to a method for the optimized production of Alcohol and biomass, in particular for use as starting materials for alcoholic products and energy recyclable Biomass.

It is known after the DE 103 27 954 A1 a process for the production of ethanol from biomass, in which the biomass is comminuted to a particle size of less than 0.5 mm before fermentation. Present proteins and optionally present bran are separated.

Thereby one obtains a substrate with a high content of starch and a small amount of solid. Thereafter, the fermentation takes place the carbohydrates present in the remaining biomass Addition of microorganisms and thereby produces alcohol. Preferably Yeasts are used for fermentation. Is ended the fermentation, when all carbohydrates are fermented. The Indian obtained alcoholic mash existing alcohol is then distilled by known methods and further purified.

By the previous separation of the proteins and the bran is the origin of alcoholic by-products during fermentation. The quality of the crude alcohol is thereby increased and the rectification effort lowered.

adversely However, this process involves the inclusion of solids in the subsequent distillation process and the subsequent Inapplicability of the remaining biomass for energy production. The object of the invention is therefore to provide a method with the optimally energetically usable biomass and alcoholic Products obtained from the raw materials, the energy demand for reduced alcohol production, the possible range of services alcoholic products and the required disposal costs for the non-recyclable residues is reduced.

Solved The object is achieved by having the features of claim 1 described method. Advantageously, the method according to the descriptive Characteristics of the claims 2 to 12 designed. The control the mass ratios of manufactured pulp-shaped Solids to the amount of wine produced according to existing needs and the quality requirements of the raw alcohol such. B. for further processing to certain predetermined alcoholic products. Controlled are the expiration time and the temperature conditions during the fermentation process, the pneumatic pressure of oxygenation during fermentation and the strength of the centrifugal forces during of the separation process.

With the process before the subsequent distillation process by the separation of the biomass the existing flavors or Others the quality of the wine obtained or the raw alcohol interfering substance components that are not otherwise or only with a very high effort to remove. The achievable quality features and purity levels of Raw alcohol allows for a wider range of manufacturable alcoholic products. The number of achievable flavors of the producible drinking alcohol gets bigger. By the separation of the solids before the further processing of the wine To raw alcohol is a larger amount to Generating energy usable biomass available.

following should the inventive method on hand of a Embodiment explained in more detail become. In the drawing shows

1 : the overall schematic procedure of the method,

2 : the previous sequence of the separation process of alcohol and biomass and

3 : the sequence according to the invention of the separation process of alcohol and biomass.

At the in 1 By way of example, the method sequence according to the invention, the fruit used as a starting material is comminuted or pressed by means of a so-called Musers. The fermentation process is triggered by the addition of wine yeast. The fermentation process is carried out in an airtight container to prevent oxidation of the aromas in the wine and further oxidation of the ethanol to acetic acid by bacteria. During the fermentation process, the sugar content of the fruit is used by the yeasts for energy production. The sugars can be reduced to two different possibilities and thus be used by the yeasts for vital energy production. First, the sugar can be degraded in the presence of oxygen from the yeast by cell respiration. The sugars are completely oxidized to carbon dioxide and water. On the other hand, in the absence of oxygen, the sugar can be broken down by the yeasts through the alcoholic fermentation for the purpose of producing energy. To protect the heat-reactive ingredients of the fermentation process is carried out in the temperature range of 16 to 25 ° C. The control of the quantity of wine to be produced and the biomass used for the production of bioenergy / biogas is effected by altering the para meter temperature ratio, the fermentation time and the oxygen supply. With air supply to the fermenting yeast this stops the fermentation and converts its energy production to oxygen respiration. Due to the limited energy production, yeasts under air exclusion increase much less than with air access. On the one hand to prevent the above-described oxidation of the aromas in the wine and the further oxidation to acetic acid in air and on the other hand to be able to control the fermentation process in terms of the amount of alcohol produced and the proliferation of yeasts, the control by metered control of the supply of pure Oxygen performed. The resulting during fermentation carbon dioxide is compressed and passed into gas containers. By means of the downstream centrifuge, the fermentation mass produced is separated into wine and pulp-like solids.

The separated solids are mixed with other biomass such. B. Grass, maize, mixed and fed to a biogas / bioenergy plant, where the transformation into energy takes place.

To the separation of the solids in the centrifuge becomes the remaining wine in the following distillation process (Burning) burned to concentrated alcohol. The distillation process is used in this process without the in the fermentation mass contained solids and thereby a qualitative produces different raw alcohol. The in the previous method with distilled solids have no influence on the Texture of raw alcohol produced. The so produced Raw alcohol with qualitatively different characteristics is suitable as starting material for the production of alcoholic products with new ones Effects and properties.

According to the in the 2 the schematic sequence shown is the previous known from the prior art production and separation of alcohol and used for energy production biomass. To clarify the achievable proportions, it is assumed that a fermentation mass of 800 l produced by the fermentation process. In the distillation of the almost total fermentation mass produced in each distillation process about 30 l of crude alcohol and the quantitatively larger (about 90%) separated fraction consists of fruit residues plus stillage. This separated portion is suitable by the firing process only to a small extent for energy. Added to this is the energy required to distill the entire fermentation mass.

In contrast, as in 3 shown schematically, in the process according to the invention in the separation by means of the centrifuge from the fermentation mass of 800 l used a quantity of wine of 450 l and 350 l of lubricious solid mass recovered. By separating the solid mass before the distillation process, this has the required properties for use in energy production. The wine is then distilled and obtained from it 30 l raw alcohol. The residual mass is only about 420 l, which are then only to a small extent suitable for energy. The energy required for the distillation process thus serves almost exclusively for crude alcohol production. As it were, this results in a multiple yield of crude alcohol with the same energy expenditure.

In the quantitative analysis of both methods ( 1 and 2 ) is assumed to be the same process conditions.

QUOTES INCLUDE IN THE DESCRIPTION

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Cited patent literature

• - DE 10327954 A1 [0002]

Claims (12)

Process for the production of alcohol and biomass by fermentation of agricultural raw materials such as fruit and vegetables Ä., Characterized in that a) after completion of the fermentation process, a material separation of the wine produced from the remaining solid mass, b) the solid mass is brought into a pumpable state and a serving for the production of biogas and / or bioenergy plant is supplied and c ) the separated from the solid mass wine is converted by distillation in alcohol and fed as a starting material to a subsequent production process for the production of alcoholic products. Method according to claim 1, characterized that the carbon dioxide produced by the fermentation process derived and converted to dry ice and / or compressed and is bottled in containers. Method according to claim 1, characterized that the fermentation process under supply of Yeast, at a temperature in the range of 16-25 ° C a period of at least two weeks expires. Method according to claim 1, characterized that the separated solid mass with other biomasses (eg grass, corn), into a pumpable state and the plant for the production of biogas and / or bioenergy is supplied. Method according to claim 1, characterized that by distilling the from the solid mass Separated wine produced alcohol as a raw material of a Production of alcoholic beverages using method is being used. Method according to claim 1, characterized that by distilling the from the solid mass Separated wine produced alcohol as a raw material of a Preparation of preservatives for food and luxury food process is used. Method according to claim 1, characterized that by distilling the from the solid mass Separated wine produced alcohol as a raw material for the production of alcohol-containing medicines is used. Method according to claim 1, characterized that by distilling the from the solid mass Separated wine produced alcohol as a raw material for used the production of alcoholic cosmetic products becomes. Method according to claim 1, characterized that by distilling the from the solid mass Separated wine produced alcohol as a raw material for the production of flavorings causing additives for Food is used. Method according to claim 1, characterized that the material separation of the wine produced from the solid mass by centrifugal forces generated by centrifuges he follows. Method according to claim 1, characterized that the control of the generated quantity ratio of Solid mass to quantity of wine through the respective supply or deprivation of heat and the specified duration the fermentation process takes place. Method according to claim 1, characterized that the control of the generated quantity ratio of Solid mass to quantity of wine through the respective supply amount of oxygen occurs.