EP1385784A1 - Procede de production d'energie - Google Patents

Procede de production d'energie

Info

Publication number
EP1385784A1
EP1385784A1 EP02742688A EP02742688A EP1385784A1 EP 1385784 A1 EP1385784 A1 EP 1385784A1 EP 02742688 A EP02742688 A EP 02742688A EP 02742688 A EP02742688 A EP 02742688A EP 1385784 A1 EP1385784 A1 EP 1385784A1
Authority
EP
European Patent Office
Prior art keywords
sif
silicates
energy
converted
water
Prior art date
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.)
Withdrawn
Application number
EP02742688A
Other languages
German (de)
English (en)
Inventor
Norbert Auner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Power Avenue
Original Assignee
Wacker Chemie AG
Dow Corning Corp
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
Priority claimed from DE10201773A external-priority patent/DE10201773A1/de
Application filed by Wacker Chemie AG, Dow Corning Corp filed Critical Wacker Chemie AG
Publication of EP1385784A1 publication Critical patent/EP1385784A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
    • C01B3/065—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents from a hydride
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
    • C01B3/08—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents with metals
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Definitions

  • the present invention relates to a method for generating energy.
  • Si silicon
  • Si0 2 silicon dioxide
  • the present invention is based on the object of specifying a method for generating energy in which the large silicon deposits present on earth are used and silicon is used as an energy carrier.
  • the silicon obtained in a first step is then converted to silicon dioxide with water, releasing energy and generating hydrogen.
  • the energy obtained can, for example, be used directly as drive energy (operating a turbine, etc.) or can be stored, for example, as thermal energy.
  • the silicon is converted in a turbine chamber, so that thermal energy is converted directly into kinetic energy here. Conventional reaction chambers with removal of the thermal energy can also be used.
  • the Si0 2 produced in the process according to the invention which is obtained in a high degree of purity, can be used for corresponding purposes (fillers, adsorbents, pouring aids, etc.) or can be recycled in order to recover silicon therefrom.
  • silicon has approximately the same energy content and approximately the same energy density (determined from the heat of formation of the oxides).
  • silicon has the great advantage as an energy source that no environmentally harmful substances (CO, CO, hydrocarbons) are formed when it is implemented.
  • the Si is preferably obtained from sand, in particular desert sand. It has been shown that no high-purity SiO 2 is required for the process according to the invention, but that sand, in particular desert sand, can be used which, as analyzes have shown, has about one
  • Si0 2 content of 80-85% Si0 2 content of 80-85%.
  • Sand, in particular desert sand, is available on a large scale and can therefore be used directly for the process according to the invention for energy generation without prior treatment.
  • the first step of the method according to the invention namely the extraction of Si from SiO 2 , is carried out essentially in the following way:
  • SiO 2 and / or silicates, including fluorosilicates are preferably reacted directly or indirectly with hydrofluoric acid to give SiF 4 , as listed under point 1.
  • Si0 2 sources can be used, whereby the contaminants do not interfere, since "self-cleaning" takes place through the SiF 4 condensation.
  • Si can preferably be converted to Si thermolytically, catalytically or by metal reduction. Thermolysis is carried out between approximately 1500 and 2000 ° C. Transition metal catalysts are preferably used in the catalytic procedure, preferably manganese and nickel complexes of oxidation state IV.
  • the main step of the method according to the invention namely the conversion of the Si with water to Si0 2 is preferably carried out so that process water is sprayed onto finely divided Si powder in a reaction chamber (turbine chamber etc.).
  • Sea water which is available on a large scale is preferably used as process water.
  • the released hydrogen can be burned into water for further energy generation or can be used as an efficient hydrogen carrier by reaction to ammonia.
  • the process is therefore distinguished by the further advantage that water or fertilizer can be obtained in this way, which is a particularly great further advantage for desert countries.
  • SiF 4 silicon tetrafluoride
  • a mixture of fluorosilicates or SiF 4 with Na or potassium is heated to a temperature of 50-500 ° C. in a 0 2 -free atmosphere or in vacuo.
  • sodium preferably between 250 and 650 ° C
  • potassium between room temperature and 100 ° C.
  • Si is also obtained in this way.
  • Another possibility for the production of SiF 4 consists of the reaction of CaF 2 , Si0 and H 2 S0 4 .
  • Energy sources used the implementation of which can be carried out in an environmentally friendly manner using resources that are available on a large scale.
  • an energy of 911 kJoules / mol is generated, including the hydrogen combustion.
  • the water used for the reaction can be external water, for example sea water, or process water (water obtained from original reactions for producing SiF 4 ).
  • the hydrogen generated in the process according to the invention can also be converted to HF with released fluorine, which can be used in the circuit. It can also be used conventionally with nitrogen to produce ammonia.
  • the attached figure shows schematically the individual energy levels in the method according to the invention.
  • alkali metals and alkaline earth metals and their hydrides for example Ca, CaH 2 , K, Na, NaH, but also Mg, Al. Na, K, Ca, CaH 2 is particularly preferably used, where in the case of a reaction with CaH 2 :
  • CaF 2 can be converted electrolytically into calcium and fluorine, but can also be converted into HF + CaS0 4 with H 2 S0 4 . Then Ca can be used again for SiF 4 reduction or HF for SiF 4 production from Si0 2 .
  • the reduction preferably takes place at a higher temperature (600-1000 ° C).
  • CaH 2 is preferably used:
  • the monosilane (SiH 4 ) obtained is preferably pyrolyzed at temperatures between 700 and 1,000 ° C:
  • SiF 4 When SiF 4 is converted into difluorosilane (H 2 SiF 2 ), it decomposes in a temperature range of 200-500 ° C, with precious metal catalysis (Pt, Pd) at room temperature, in Si, SiF 4 and H 2 .
  • Pt, Pd precious metal catalysis
  • H 2 SiF 2 is represented in the following way:
  • Trifluorosilane can also be produced from F 2 Si using hydrofluoric acid
  • Trifluorosilane can then be pyrolytically converted to Si + 3HF with hydrogen at 1,000-1,400 ° C.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Silicon Compounds (AREA)

Abstract

La présente invention concerne un procédé pour produire de l'énergie. Selon ce procédé, on obtient Si à partir de SiO2 et/ou de silicates, puis le Si obtenu est mis en réaction avec de l'eau pour donner SiO2, libérant ainsi de l'énergie et de l'hydrogène.
EP02742688A 2001-05-03 2002-04-26 Procede de production d'energie Withdrawn EP1385784A1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE10121477 2001-05-03
DE10121477 2001-05-03
DE10131505 2001-07-02
DE10131505 2001-07-02
DE10201773A DE10201773A1 (de) 2001-05-03 2002-01-18 Verfahren zur Energieerzeugung
DE10201773 2002-01-18
PCT/DE2002/001531 WO2002090257A1 (fr) 2001-05-03 2002-04-26 Procede de production d'energie

Publications (1)

Publication Number Publication Date
EP1385784A1 true EP1385784A1 (fr) 2004-02-04

Family

ID=27214416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02742688A Withdrawn EP1385784A1 (fr) 2001-05-03 2002-04-26 Procede de production d'energie

Country Status (4)

Country Link
US (1) US20040151664A1 (fr)
EP (1) EP1385784A1 (fr)
DE (1) DE10291940D2 (fr)
WO (1) WO2002090257A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10258072A1 (de) * 2002-12-11 2004-07-01 Wacker-Chemie Gmbh Verfahren zur Erzeugung von Wasserstoff
DE102006020786B4 (de) 2005-11-09 2009-06-25 Rev Renewable Energy Ventures, Inc. Verfahren zur Erzeugung von Wasserstoff
DE102006034885A1 (de) * 2006-07-25 2008-08-07 Daimlerchrysler Ag Wasserstoff- und Energiegewinnung durch thermische Umsetzung von Silanen
WO2009121170A1 (fr) * 2008-03-31 2009-10-08 Et-Energy Corp. Procédé chimique pour la génération d’énergie
CA2747099A1 (fr) * 2008-12-18 2010-06-24 Silicon Fire Ag Silicium ou metaux elementaires comme sources d'energie
EP2647596A3 (fr) 2008-12-18 2014-08-27 Silicon Fire AG Procédé et appareil pour fournir une source d'énergie en utilisant du dioxyde de carbone comme source de carbone et de l'énergie électrique
US20120022172A1 (en) * 2008-12-18 2012-01-26 Silicon Fire Ag Method for providing an energy carrier
GB0919830D0 (en) 2009-11-12 2009-12-30 Isis Innovation Preparation of silicon for fast generation of hydrogen through reaction with water
US8921628B2 (en) * 2011-03-10 2014-12-30 Kior, Inc. Refractory mixed-metal oxides and spinel compositions for thermo-catalytic conversion of biomass
US9518229B2 (en) 2012-07-20 2016-12-13 Inaeris Technologies, Llc Catalysts for thermo-catalytic conversion of biomass, and methods of making and using
GB201217525D0 (en) 2012-10-01 2012-11-14 Isis Innovation Composition for hydrogen generation
US9522392B2 (en) 2013-03-15 2016-12-20 Inaeris Technologies, Llc Phosphorous promotion of zeolite-containing catalysts
JPWO2021199644A1 (fr) * 2020-04-02 2021-10-07
US11383975B2 (en) 2020-05-25 2022-07-12 Silican Inc. Composite for generating hydrogen

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
BE759122A (fr) * 1969-11-19 1971-05-18 Union Carbide Corp Procede et charge de production de silicium au four a arc electrique par reduction carbothermique de silice
US3975913A (en) * 1973-12-20 1976-08-24 Erickson Donald C Gas generator and enhanced energy conversion systems
US4781565A (en) * 1982-12-27 1988-11-01 Sri International Apparatus for obtaining silicon from fluosilicic acid
FI72952C (fi) * 1985-03-11 1987-08-10 Kemira Oy Foerfarande foer framstaellning av kisel.
US4676968A (en) * 1985-07-24 1987-06-30 Enichem, S.P.A. Melt consolidation of silicon powder
JPS62128915A (ja) * 1985-11-26 1987-06-11 Idemitsu Kosan Co Ltd モノシランの製造方法
US5012719A (en) * 1987-06-12 1991-05-07 Gt-Devices Method of and apparatus for generating hydrogen and projectile accelerating apparatus and method incorporating same
DE3841210A1 (de) * 1988-12-07 1990-06-28 Siemens Ag Verfahren zum herstellen von siliciumtetrafluorid
JPH0459601A (ja) * 1990-06-26 1992-02-26 Asahi Chem Ind Co Ltd 水素の製造方法
RU2035397C1 (ru) * 1990-12-13 1995-05-20 Терешин Виктор Дмитриевич Способ получения полупроводникового кремния
US6582676B2 (en) * 2000-08-14 2003-06-24 The University Of British Columbia Hydrogen generation from water split reaction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02090257A1 *

Also Published As

Publication number Publication date
DE10291940D2 (de) 2004-11-11
WO2002090257A1 (fr) 2002-11-14
US20040151664A1 (en) 2004-08-05

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