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WO2007115660A2 - Procédé et dispositif de production d'engrais azotés à partir de substances biogènes - Google Patents

Procédé et dispositif de production d'engrais azotés à partir de substances biogènes Download PDF

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Publication number
WO2007115660A2
WO2007115660A2 PCT/EP2007/002532 EP2007002532W WO2007115660A2 WO 2007115660 A2 WO2007115660 A2 WO 2007115660A2 EP 2007002532 W EP2007002532 W EP 2007002532W WO 2007115660 A2 WO2007115660 A2 WO 2007115660A2
Authority
WO
WIPO (PCT)
Prior art keywords
suspension
degassing
liquid
ultrasound
tanks
Prior art date
Application number
PCT/EP2007/002532
Other languages
German (de)
English (en)
Other versions
WO2007115660A3 (fr
Inventor
Bernhard Krieg
Jörg WARTENBERG
Horst Hennig
Thomas Weidele
Jörg Hofmann
Mike Wecks
Original Assignee
Energietechnik Leipzig Gmbh
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 Energietechnik Leipzig Gmbh filed Critical Energietechnik Leipzig Gmbh
Publication of WO2007115660A2 publication Critical patent/WO2007115660A2/fr
Publication of WO2007115660A3 publication Critical patent/WO2007115660A3/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/10—Addition or removal of substances other than water or air to or from the material during the treatment
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/50—Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90—Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock
    • Y02P20/145—Feedstock the feedstock being materials of biological origin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

Definitions

  • the invention relates to methods and apparatus for the production of nitrogen fertilizer from biogenic substances, in particular from residues of biogas plants
  • WO 2005/049495 describes the course of the process of processing animal manure and manure into nitrogen fertilizer. According to this teaching, a method and a device for the recovery of nitrogen fertilizer from organic waste products in the liquid phase (suspension, emulsion, solution) and for the sanitation of the waste or for emission reduction by thermal treatment using mineral or organic additives is proposed.
  • this is achieved by a method in which the heated to-utilizing waste product in vacuum at temperatures between 40 0 C and 90 0 C, cooling the thereby escaping carbon dioxide and ammonia containing gas and and introduced into an aqueous absorption medium , the nitrogen fertilizer formed thereby discharged and the unabsorbed and carbon dioxide-containing excess gas is pumped back into the drain tank, wherein the negative pressure generated at the beginning of the process by a vacuum pump is maintained autogenous by the course of the process.
  • recirculate the excess gas into the circuit by introducing it either directly above the waste product to be treated or via a gas cooling system above the waste product to be treated or divided and a partial flow through the waste product and another partial stream above the waste product is initiated.
  • a gypsum slurry is used as the aqueous absorbent.
  • the disadvantage is the need for a sophisticated temperature / pressure regime, which must ensure that the stripping container for hours constantly 80 0 C and 300 to 500 mbar must be maintained.
  • Another disadvantage is the complicated stirring of a receiving suspension for the expelled gases carbon dioxide and ammonia.
  • a slurry of mineral flour such as gypsum or the like is generally used, in which the carbon dioxide / ammonia gas mixture is introduced. This gives lime and ammonium sulfate, which are separated from the liquid phase.
  • the cause of the disadvantage of the necessary heating is due to the process principle.
  • the heat supply causes the expulsion of the gases ammonia and carbon dioxide from the suspension of manure, animal manure or the like
  • Method and apparatus are aligned to the batch process. There are no studies on a continuous procedure.
  • Mineral flour such as gypsum or the like must be kept in suspension by stirring, so that a reaction of the solids with the gases can take place.
  • the invention has the goal of a cost-effective, energetically much less expensive process step of degassing of biogenic substances, such. As liquid manure or an animal kot suspension or digestate of a biogas plant to effect.
  • the process should be designed continuously.
  • the escaping gases should be removed without energy loss.
  • the invention has the object of removing the two essential gases ammonia and carbon dioxide in a technically simple manner from the liquid and convert to fertilizers.
  • the method should be applicable to almost all fermentable biogenic substances and define manure and animal excrement as a special case.
  • the technical system should be able to be operated continuously by a special design and arrangement of degassing. It is to be avoided that the gases to be discharged away heat energy, whereby water vapor escapes in appreciable amounts with.
  • the object is achieved according to the invention by subjecting biogenic substances, in particular manure or animal kot suspension, to ultrasound in two essential process steps during the process of biogas production with subsequent production of nitrogen fertilizer.
  • biogenic substances in particular manure or animal kot suspension
  • ultrasound is based on the scientific knowledge that under special conditions it is possible to create a cavitation zone in a liquid, but also in a suspension, within which the liquid is degassed.
  • the suspensions to be degassed are passed through a cavitation zone, the cavitation space is not higher than 200 cm, that powerful sonotrodes are used and interference of the ultrasonic waves is avoided by using a plurality of ultrasound transmitters.
  • the ultrasound sensors used according to the invention are flanged laterally in the inlet or on the underside of the degassing container. It is possible to design sonotrodes as cylinders and to arrange them centrally in the degassing tanks. It is also possible to design the sonotrodes as discs and to flanging on the bottom of the degassing. They may be rod-shaped and attached laterally. Finally, it can be used on any sonotrode forms that are available.
  • the frequency is preferably between 20 kHz and 1.7 MHz and can be regulated.
  • degassing tanks with a height of 200 cm are connected in parallel or in series.
  • the degassing tanks have a diameter of 10 to 20 cm. Particularly favorable is a diameter of 15 cm.
  • the liquid to be degassed is kept above room temperature, with a range up to 40 0 C is preferred, so that energy losses largely excreted.
  • the escaping gas a mixture of carbon dioxide and ammonia, is rinsed out of the degassing vessel by a carrier gas or sucked off by a slight negative pressure and passed through a compressor in an adsorption vessel.
  • the second process step in which the ultrasonic application is used, is the process of the reaction of ammonia gas with CaSO 4 in aqueous solution or suspension.
  • Ultrasound causes an exceptionally efficient mixing of the reactants and a surface activation of the solids and thus a sufficient contact surface between solid and gas and thus a faster and more advantageous reaction sequence.
  • the surface contact between the gases carbon dioxide and ammonia and reactants such as mineral flour, for example gypsum or the like, is achieved by ultrasonically impinging an absorption vessel, which ensures the distribution of the initial solid mineral flour in a liquid such as water or the like, and thus a sufficient Ensured contact surface between solid and gas.
  • the ultrasound transmitters to be used for mixing the reaction liquid are of any desired design. At least one sonotrode is used per reactor, but it is possible to attach several sonotrodes whose frequencies are coordinated to avoid interference.
  • the formation of the sonotrodes is arbitrary. Preference is given to the use of circular discs with a diameter of 10 to 20 cm, with 15 cm are favored.
  • the form of the sonotrodes is by no means limited to this.
  • the process according to the invention proceeds as follows.
  • the fermented by microorganisms biogenic substances such as manure, Tierkotsuspension or the like arrive at a temperature of about 40 ° C in degassing, which are connected in parallel or in series.
  • the containers are continuously subjected to ultrasound. Cavitation bubbles form in the liquid, which expel the gases.
  • carbon dioxide escapes, then ammonia.
  • the escaping gases are removed by rinsing or suction before they can dissolve again according to the chemical equilibrium.
  • the degassed residue is removed from the container and further treated.
  • the gases are passed through a compressor in a suspension of mineral flour in water, wherein the suspension is kept stable according to the invention by ultrasound.
  • the suspension is kept stable according to the invention by ultrasound.
  • ammonia content of the incoming gas mixture is completely converted chemically, resulting in lime and ammonium sulfate. Any excess carbon dioxide content is recycled to the reaction process.
  • the degassing tanks are preferably made of VA steel, have an inlet and an outlet opening for the liquid and at the upper lid an outlet opening for the escaping gas.
  • the flow rate of the residual slurry or animal kote suspension is 0.05 to 0.5 m / s, preferably 0.1 m / s.
  • An apparatus for carrying out the method has the following essential parameters.
  • the degassing used in the known per se process for the production of biogas for expelling the gases ammonia and carbon dioxide are so designed so that they each carry a liquid inlet and outlet nozzle at a height of up to 200 cm, also a gas outlet opening and at least one ultrasonic generator, while eliminating a stirrer.
  • Several, preferably three to ten, reactors are connected in parallel or in series and the degasification process is continuously controlled.
  • Absorption vessels for absorbing carbon dioxide and ammonia are designed such that they have an inlet nozzle for a mixture of neutral or sulfuric acid gypsum slurry, a gas inlet nozzle and at least one ultrasonic generator and a discharge for solids.
  • the ultrasound transmitters can be designed both for the generation of low-frequency and high-frequency ultrasound.
  • Example 1 is shown in Figure 1.
  • biogenic residues 1 are passed as a pumpable suspension according to the taking place in a conventional manner exposure to microorganisms in a fermenter in the degassing tank 2.
  • the degassing of the liquid takes place by the degassing vessel is subjected to ultrasound.
  • the gases - preferably CO 2 and NH 3 - escape rapidly and almost completely under the action of ultrasound. They are derived via 4, pass through the compressor 5 and are passed into the absorption vessel 6, which contains an absorber suspension. This is a gypsum suspension, which may also contain a small amount of H 2 SO 4 .
  • From the absorption vessel 6 liquid is withdrawn continuously, which up to 40% Contains ammonium sulfate.
  • the escaping gas is compressed in the compressor 9 and returned to the circulation or energetically utilized.
  • the absorption vessel is subjected to ultrasound, whereby a continuous mixing and close contact of the gas phase with the liquid and solid components is ensured.
  • a liquid stream is passed into the degassing tank.
  • 6 pieces are connected in series in this example, they have a height of 2 m with a diameter of 20 cm. They are filled with the liquid to be degassed so far that 0.375 m 3 of available volume remain.
  • the flow rate of the liquid stream is 0.09 m / s.
  • the degassing is carried out by continuous ultrasound.
  • circular membrane oscillators are used, which are flanged to the bottom of the degassing and emit high-frequency ultrasound, in the example of the frequency 1700 kHz.
  • the expelled gas mixture predominantly consisting of ammonia and carbon dioxide
  • the absorption vessel which contains a gypsum suspension.
  • the reaction of carbon dioxide, ammonia, gypsum and water to ammonium sulfate which is withdrawn as the desired end product in solution.
  • Excess gas containing essentially carbon dioxide, is discharged and used in a conventional manner.
  • Disk-shaped membrane oscillators which emit frequencies of 1700 KHz, are used as ultrasound transmitters.
  • Example 2 The procedure is essentially the same as in Example 1, but six degassing tanks, with otherwise identical dimensions and consisting of VA steel, are connected in parallel. Six low-frequency ultrasound transmitters are placed in the inlet of the degassing tank. The sonotrodes operate at a frequency of 20 - 40 kHz. Legend to the picture
  • the hatched areas show the ultrasound-loaded suspensions.

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  • Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Fertilizers (AREA)
  • Physical Water Treatments (AREA)
  • Treatment Of Sludge (AREA)

Abstract

L'invention concerne un procédé et un dispositif de production d'engrais azotés par le traitement de substances biogènes. L'objectif de cette invention est d'extraire d'un liquide, d'une façon techniquement élégante, les deux gaz formés lors du processus de formation de biogaz et dissous dans ce liquide, à savoir l'ammoniac et le dioxyde de carbone, et de les utiliser à une autre fin. A cet effet, des réservoirs de dégazage et des vases d'absorption sont soumis à des ultrasons et des engrais sont ensuite extraits.
PCT/EP2007/002532 2006-04-03 2007-03-22 Procédé et dispositif de production d'engrais azotés à partir de substances biogènes WO2007115660A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006015496.7 2006-04-03
DE200610015496 DE102006015496B4 (de) 2006-04-03 2006-04-03 Verfahren und Vorrichtung zur Herstellung von Stickstoffdünger aus biogenen Stoffen

Publications (2)

Publication Number Publication Date
WO2007115660A2 true WO2007115660A2 (fr) 2007-10-18
WO2007115660A3 WO2007115660A3 (fr) 2008-07-31

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Application Number Title Priority Date Filing Date
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Country Status (2)

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DE (1) DE102006015496B4 (fr)
WO (1) WO2007115660A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7781194B2 (en) 2005-09-30 2010-08-24 Kwk Gbr Method for using biomass in biogas process
EP2743234A1 (fr) 2012-12-13 2014-06-18 Fulvio Antonio De Asmundis Procédé et dispositif de traitement des eaux usées
EP2743235A1 (fr) 2012-12-13 2014-06-18 Fulvio Antonio De Asmundis Procédé et appareil de traitement des eaux usées
DE102021129443A1 (de) 2021-11-11 2023-05-11 Biogastechnik Süd GmbH Verfahren und vorrichtung zur aufbereitung von flüssigen organischen substraten in anaeroben anlagen und prozessen mittels verknüpfung von mechanischer, vacuum- sowie mehrstufiger ultraschall- und plasma behandlung
EP4368695A1 (fr) 2022-11-10 2024-05-15 PRE Power Recycling Energyservice GmbH Procédé et dispositif pour le traitement de substrats organiques liquides dans des installations et processus anaérobies par combinaison de traitement mécanique, sous vide, par ultrasons et par plasma en plusieurs étapes

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008035950B4 (de) * 2008-07-31 2012-02-09 Petra Hansen Verfahren zur Gewinnung von Calciumcarbonat- und Ammoniumsulfatdünger aus organischem Abfall und Anlage zur Durchführung des Verfahrens
DE102008042461B3 (de) * 2008-09-29 2010-04-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur Behandlung biogener Stoffe zur Erzeugung von Biogas
DE102009036874A1 (de) 2009-08-10 2011-03-31 Verbio Vereinigte Bioenergie Ag Verfahren zur energetisch optimierten Gewinnung von Ammoniumsalzen
EP2284141A1 (fr) 2009-08-12 2011-02-16 Leibniz-Institut für Agrartechnik Potsdam-Bornim e.V. (ATB) Procédé et dispositif de fabrication de particules de charbon enrichies avec des matières minérales

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US3284991A (en) * 1963-12-19 1966-11-15 Dow Chemical Co Ultrasonic degassing of liquids
AU6533694A (en) * 1993-04-22 1994-11-08 Beg Bioenergie Gesellschaft Mbh Device and method for the composting and wet-fermentation of biological waste
DE4407564A1 (de) * 1994-03-08 1995-09-14 Toni Dr Gradl Verfahren zur Oxidation von organischen Stoffen und/oder Mikroorganismen in einem Behandlungsgut, nämlich in Deponiesickerwasser oder in Suspensionen von Mikroorganismen, vorzugsweise in einem Schlamm aus biologischen Kläranlagen
DE19652127A1 (de) * 1996-12-14 1998-06-18 Heinz Schmehle Vorrichtung zur Abtrennung von überschüssigen Gasen aus unter Druck stehendem Trinkwasser
BR0316664A (pt) * 2002-11-25 2005-10-11 Sheets Sr Richard G Tratamento de efluente de refugo animal
FR2856609B1 (fr) * 2003-06-27 2006-12-15 Geolog Spa Systeme de degazage d'un milieu liquide et d'analyse des gaz contenus dans le milieu liquide
DE10354063C5 (de) * 2003-11-19 2009-09-24 Gesellschaft für Nachhaltige Stoffnutzung mbH Verfahren und Vorrichtung zur Gewinnung von Stickstoffdünger aus organischen Abfallprodukten

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7781194B2 (en) 2005-09-30 2010-08-24 Kwk Gbr Method for using biomass in biogas process
EP2743234A1 (fr) 2012-12-13 2014-06-18 Fulvio Antonio De Asmundis Procédé et dispositif de traitement des eaux usées
EP2743235A1 (fr) 2012-12-13 2014-06-18 Fulvio Antonio De Asmundis Procédé et appareil de traitement des eaux usées
DE102021129443A1 (de) 2021-11-11 2023-05-11 Biogastechnik Süd GmbH Verfahren und vorrichtung zur aufbereitung von flüssigen organischen substraten in anaeroben anlagen und prozessen mittels verknüpfung von mechanischer, vacuum- sowie mehrstufiger ultraschall- und plasma behandlung
EP4368695A1 (fr) 2022-11-10 2024-05-15 PRE Power Recycling Energyservice GmbH Procédé et dispositif pour le traitement de substrats organiques liquides dans des installations et processus anaérobies par combinaison de traitement mécanique, sous vide, par ultrasons et par plasma en plusieurs étapes

Also Published As

Publication number Publication date
DE102006015496A1 (de) 2007-10-04
DE102006015496B4 (de) 2012-02-16
WO2007115660A3 (fr) 2008-07-31

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