WO2007082976A1 - Procédé d'obtention de bioéthanol sur une plante sucrière - Google Patents

Procédé d'obtention de bioéthanol sur une plante sucrière Download PDF

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Publication number
WO2007082976A1
WO2007082976A1 PCT/ES2007/070008 ES2007070008W WO2007082976A1 WO 2007082976 A1 WO2007082976 A1 WO 2007082976A1 ES 2007070008 W ES2007070008 W ES 2007070008W WO 2007082976 A1 WO2007082976 A1 WO 2007082976A1
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WIPO (PCT)
Prior art keywords
bioethanol
sugar
fermentation
plant
obtaining
Prior art date
Application number
PCT/ES2007/070008
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English (en)
Spanish (es)
Inventor
Vicente Merino Febrero
Original Assignee
Vicente Merino Febrero
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vicente Merino Febrero filed Critical Vicente Merino Febrero
Publication of WO2007082976A1 publication Critical patent/WO2007082976A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
    • C07C31/02—Monohydroxylic acyclic alcohols
    • C07C31/08—Ethanol
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00—Preparation of oxygen-containing organic compounds
    • C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
    • C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
    • C12P7/06—Ethanol, i.e. non-beverage
    • C12P7/08—Ethanol, i.e. non-beverage produced as by-product or from waste or cellulosic material substrate

Definitions

  • the present invention relates to an alternative process in a sugar plant for obtaining a product, in addition to sugar, such as bioethanol. More particularly, it refers to the obtaining of bioethanol in a sugar plant by means of the raw materials of the same or other foreign ones that produce sugary solutions.
  • a series of by-products are derived from the sugar production line that can be marketed for later use in other industries.
  • molasses which is obtained in the sugar extraction process and can be used as raw material in the manufacture of ethyl alcohol, citric acid, baking yeast and feed for cattle.
  • a process for obtaining bioethanol taking into account the normal sugar manufacturing line in a sugar plant, which comprises the following steps:
  • the bioethanol resulting from the distillation of step b above is subjected to a molecular dehydration process for purification.
  • the raw materials used in a sugar plant are usually beet or sugar cane, where the diffusion juice comes from them is obtained by washing and cutting the raw material and subsequent introduction into diffusers to extract the sucrose.
  • sucrose extraction is carried out by means known as osmosis from the diffuser cells to the water or to the surrounding environment.
  • it comprises the total or partial use of said diffusion juice for obtaining bioethanol. That is, the use of diffusion juice for the production of bioethanol, sugar or both products.
  • This use of the diffusion juice will depend on the sugar plant itself, as it may be, the restriction imposed by official agencies on the reduction in tons of sugar or the time of collection of the raw material, among others.
  • the present invention provides a process for obtaining bioethanol in a sugar plant comprising the fermentation of cereals or other energy crops.
  • Such cereals or crops they constitute a raw material outside the plant, which can be used in the same bioethanol manufacturing line, in order to increase the bioethanol production yield.
  • the cereal can be selected, but not limited, among corn, barley, wheat or any combination thereof.
  • the energy crop can be selected, but not limited, among the chicory, thistle, etc.
  • the cereal used in the present invention is treated for subsequent fermentation, in the same manufacturing line to obtain bioethanol by means of diffusion juices of the raw material of the sugar plant.
  • This treatment is carried out by different sieves and grinding, said grinding is mixed with water.
  • the present invention includes including molasses, from the manufacture of sugar, in the fermentation process.
  • the process of the present invention comprises obtaining bioethanol with a purity of at least 90%.
  • a second aspect of the present invention provides bioethanol obtained by the described process.
  • Bioethanol as used throughout the description should be understood, in general, ethyl alcohol or ethanol obtained through a biological procedure, such as an alcoholic fermentation. This Bioethanol is an important source of renewable energy in its use as a biofuel.
  • a third aspect of the present invention comprises the use of bioethanol obtained by the described process, as fuel, improver or oxidant, among others.
  • a fourth aspect of the present invention includes the use of the by-products obtained in the process of obtaining bioethanol in a sugar plant for the manufacture of feed, paints, solvents, among others.
  • Fig. 1. Schematic representation of the flow of materials in the process of obtaining bioethanol in a sugar plant.
  • EXAMPLE 1 Derivation of the diffusion juice of the beet to fermentation for the production of bioethanol.
  • this example there was another possibility of flow at the outlet of the diffuser juices that until now only had sugar production as a direction.
  • the beet was washed and cut into knife mills. Once the beet is cut into crops, it is introduced into the diffusers to extract the sucrose, this extraction was performed by osmosis from the diffuser cells to the water or to the surrounding environment.
  • the diffusion juice which normally in a sugar plant passes to calcocarbon purification, which consists of the addition of lime (CaO) forming soluble sucrates and sucrates and subsequent steps to finally obtain sugar (Fig. 1)
  • a new outlet (or pipe) was installed that communicates said outlet of the diffusers with the fermenters, passing through both the diffusion juice to be fermented.
  • an addiction of industrial enzymes can be carried out, either of chemical or biological synthesis to improve the fermentation performance.
  • This addiction of enzymes can be made for any type of juice to be fermented.
  • Enzymes that can be added include but are not limited to: Amylases, Glucanases, Invertas, etc.
  • a treatment of U. HT was then carried out. (high temperature sterilization method) at 141.5 degrees Celsius for 5 seconds, with steam at the outlet of said juice to sterilize it and avoid degradation of sugars by other bacteria, mainly lactic and acetic acid bacteria.
  • This diffusion juice has appropriate characteristics for fermentation, therefore, we only add an ammoniacal phosphate yeast extract and some sulfur before fermentation.
  • This fermenter has its own heat exchanger to cool the heat produced in the exothermic fermentation reaction. further It also has stirrers, CIP cleaning showers and an ethanol recovery wash column where CO 2 was released.
  • the CO 2 was removed and the must, or fermented diffusion juice, was sent to a lung tank that allowed us to vary the flow rate into the distiller as well as homogenize it.
  • wort stripping columns From the first two distillation columns, called wort stripping columns, comes organic matter that can be used to produce feed. Then follows a third purification column in which we remove components with a lower boiling point than ethanol and water. Finally, we have the fourth rectification column, where we separate heavy and light alcohols that may be left and ethanol plus water to the azeotrope, that is, the point from which the ethanol cannot be separated from water by distillation because it is not a ideal mix.
  • EXAMPLE 2 Obtaining bioethanol by the fermentation of molasses.
  • Molasses are to be obtained while producing sugar, assuming 4.5% of the total beet that is transformed into sugar.
  • the molasses were fermented, using the same procedure described in the previous example, with an expected yield of 43 grams of bioethanol for each liter of molasses introduced into the fermenters.
  • EXAMPLE 3 Production of bioethanol through cereal fermentation.
  • This process has the following phases:
  • a mixture of the cereals indicated above was lifted by means of conveyor belts, from buckets to a hopper located in the upper part of the cereal grinding building, thus facilitating the displacement by gravity of it from now on.
  • the cereal mixture passed through a magnetic separator to avoid the inclusion of metal parts in the rest of the process.
  • the flour was combined with water in a mixer.
  • the flour mixture with water was pumped by a UHT positive displacement pump already mentioned in example 1.
  • This fermenter has its own heat exchanger to cool the heat produced in the exothermic fermentation reaction. further It also has stirrers, CIP cleaning showers and a wash column for ethanol recovery when CO2 is released.
  • the cereal juice went to a 4-column distiller. From the first two distillation columns, called wort stripping columns, came organic matter that can be used to produce feed. Subsequently, it passed to a third purification column in which components with a lower boiling point than ethanol and water were removed. Finally, in the fourth rectification column, heavy and light alcohols that could remain and ethanol plus water were separated to the azeotrope, that is, the point from which the ethanol can no longer be separated from the water by distillation because it is not a mixture ideal.
  • EXAMPLE 4. Use of the by-products obtained in the manufacture of bioethanol for the production of feed.

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  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Zoology (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

L'invention concerne un procédé d'obtention de bioéthanol sur une plante sucrière. Ce procédé comprend : i) la fermentation d'une solution présentant une certaine teneur en sucres provenant : du jus de diffusion de la plante sucrière et/ou d'autres matières premières étrangères (céréales, betterave, etc.) à la plante sucrière ; et ii) la distillation du produit fermenté. L'invention concerne également les utilisations du bioéthanol ainsi obtenu.
PCT/ES2007/070008 2006-01-18 2007-01-16 Procédé d'obtention de bioéthanol sur une plante sucrière WO2007082976A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200600115A ES2278532B1 (es) 2006-01-18 2006-01-18 Procedimiento de obtencion de bioetanol en una planta azucarera.
ESP200600115 2006-01-18

Publications (1)

Publication Number Publication Date
WO2007082976A1 true WO2007082976A1 (fr) 2007-07-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2007/070008 WO2007082976A1 (fr) 2006-01-18 2007-01-16 Procédé d'obtention de bioéthanol sur une plante sucrière

Country Status (2)

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ES (1) ES2278532B1 (fr)
WO (1) WO2007082976A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010022045A1 (fr) * 2008-08-20 2010-02-25 Novozymes A/S Procédés de production de produits de fermentation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2319604B2 (es) * 2007-10-05 2010-03-22 Vicente Merino Febrero Metodo de obtencion de biocombustible.

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
AGEJAS DOMINGUEZ L.A.: "BIOCOMBUSTIBLES. Utilizacion de los Aceites vegetales como energia renovable", 1996, MINISTERIO DE AGRICULTURA PESCA Y ALIMENTACION, pages: 106 - 111, 133, XP003016824 *
AUSTMEYER K.E. ET AL.: "Combined production of ethanol and white sugar", ZUCKERINDUSTRIE, vol. 113, no. 9, 1988, pages 765 - 772, XP001536804 *
BUCHANAN E.J. ET AL.: "Production of ethanol by a sugar mill", SUGAR JOURNAL, vol. 65, no. 7, 2002, pages 11, 14 - 17, XP008084339 *
HENKE S. ET AL.: "Model of a sugar factory with bioethanol production in program Sugars", JOURNAL OF FOOD ENGINEERING, vol. 77, no. 3, 2006, pages 416 - 420, XP005516087 *
KUNTEOVA L.: "Bioethanol production from sugarbeet", LISTY CUKROVARNICKE A REPARSKE, vol. 113, no. 2, 1997, pages 47 - 49, XP008084301 *
LUIS DIEZ ALVAREZ: "Los Biocombustibles en Castilla y Leon. Jornadas Tecnicas sobre Biomasa Enernalon", 18 November 2005 (2005-11-18), pages 1 - 21, XP003016232, Retrieved from the Internet <URL:http://www.enernalon.org/pages/archivos_noticias/BIOCOMBUSTIBLES%20EREN.pdf> *
WALTERS C. ET AL: "Sugar beet, boilers, environmentally friendly tomatoes!", BRITISH SUGAR BEET REVIEW, vol. 72, no. 3, 2004, pages 25 - 29, XP008084637 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010022045A1 (fr) * 2008-08-20 2010-02-25 Novozymes A/S Procédés de production de produits de fermentation

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Publication number Publication date
ES2278532B1 (es) 2008-03-16
ES2278532A1 (es) 2007-08-01

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