DE102022004591A1 - Energy generator with natural gas. - Google Patents

Abstract

The invention relates to the deterioration (24) of the footprint according to EP 3 166 708 B1, Climeworks by supplying steam in batches according to the circular segment (24) within the circular diagram with the circumference (21) when separating 1 t of CO2 according to the circular segment ( 22) and an immission forecast as a footprint (23), according to TA Luft 2.2, by generating exhaust gases from H2O gas and CO2 for the desorption of CO2 during separation from the air. This is done with energy producers (1, 2, 3, 4) achieved with a condenser for separating H2O and CO2, in which burners (3) for natural gas, feed means (1) for oxygen O2 into the burners (3) and a condenser (16) are provided to remove H2O from the exhaust gases CO2, in the dew point. This makes it possible with the representation of the footprint to show immission forecasts, according to TA Luft, to save CO2.

Description

The invention deals with energy generators with natural gas, in which the energy generated is extracted as a mixed gas, CO2 with H2O, and in a waste heat boiler, a steam boiler and as heat and electrical energy, as well as with the use of oxygen O2 and hydrogen H2 Generation to enable a connection to the energy producers with the use of oxygen O2 via electrolysis and to enable storage of CO2 and climate protection through CO2 storage.

Another task is to use oxygen O2 and other climate-friendly substances, starting from H2O, H2O vapor, H2O gas, H2, O2, including H2O solubles such as NH3 and CO2, in order to enable decarbonization through CO2 storage . When producing hydrogen H2 in the electrolyser, the oxygen O2 is present in 8 times the amount (kg) in order to enable the oxygen O2 to generate energy with the flue gases - H2O and CO2 - and to enable CO2 storage in a gas storage facility and reduce the CO2 footprint. S.GI. (1).

It is also known from the COP27 in Egypt and a report by IRENA, the agency for renewable raw materials, that these raw materials will be used for energy production and decarbonization in the future. Further measures are necessary for decarbonization using the example of sewage sludge and storage of CO2 with a zero footprint.

Furthermore, it is known from discussions with experts about the climate-damaging pollutants in sewage sludge that there is a concentration of 1.45% ammonium nitrogen according to DIN 38406-5 from Adliswil near Zurich, that this ammonia NH3 is burned in Zurich Werdhölzli together with water vapor to form N2O. According to the TA Luft 2.2 immission forecasts, an amount of 164 kg/a CO2-n per inhabitant from N2O must be taken into account. In order to avoid the footprint of these emissions and limit the climate damage from CO2-n emissions of 6,400 tons per year, further measures are necessary because of the Climate Foundation. More detailed project 2018 - 033 Swiss Climate Foundation, on the conversation on August 26, 2020 in Adliswil at Swiss Re.

• • in 4 Jahren ein Langzeit Fußabdruck von 25.600 Tonnen CO2-n besteht,
• • die Immissionsprognose einen Fußabdruck über 114 Jahre mit 25.600 t x 114/2 = 1.459.000 Tonnen CO2-n ausweist.

After the prevention by the Climate Foundation in Adliswil, it is the case that

• • there will be a long-term footprint of 25,600 tons of CO2-n in 4 years,
• • the immission forecast shows a footprint over 114 years with 25,600 tx 114/2 = 1,459,000 tons of CO2-n.

Significant disadvantage: Consequential damage to the CO2-n footprint.

It is also known that sewage sludge recycling with decarbonization was planned for Lindau (B) in 1980. Due to the city's lack of interest, the recycling facility was set up in Kyoto on the same scale of 35,000 PE. The disadvantage is: the wet sewage sludge transport and the incineration in Schongau by the Emter company.

Further measures are necessary to decarbonize biomass after COP27 and avoid consequential damage beyond the 1.4 million tons of CO2-n.

There is also a CO2 desorption device with steam injection in the EP 3 166 708 B1 disclosed, according to which up to 16 tons of steam per ton of CO2 are provided in the CO2 adsorption process. Accordingly, according to the EP 3 166 708 B1 For CO2 desorption, heating and regeneration of the adsorber surfaces is disadvantageously provided via batch steam injection. The disadvantage is the batch operation with superheated steam with low energy efficiency < 4% and the CO2 footprint of the steam is 6 times the captured CO2. Significant disadvantage. The underqualification according to the EP 3 166 708 B1 for the capture of CO2.

Because of the underqualification according to the EP 3 166 708 A1 Climeworks (less qualification) it is more beneficial for climate protection to consume an additional 3 - 4 tons of CO2 than to realize (1) ton of CO2 capture according to Climeworks.
For the representation of the footprint after the EP 3 166 708 B1 Further measures are necessary when using the WEF Alliance Davos.

BAYERNOIL also utilizes sewage sludge using pyrolysis according to the publication WO 2018/036839 A 1, known to Fraunhofer, according to which pyrolysis of the raw material of sewage sludge is provided in the absence of oxygen if the solidification point is exceeded. The disadvantage is the supply of oxygen with the bulk material when feeding in up to 30% air. Another disadvantage: Air entry depends on the filling level of the entry lock with 200% based on a filling level of 33%, i.e. a total air content of 230%.

• • fehlender Explosionsschutz durch Zündung mit Sauerstoff O2 unterhalb des Erstarrungspunktes von Klärschlamm,
• • Unterqualifizierung nach der WO 2018/036839 A 1, Fraunhofer;
• • Folgeschäden durch Unterqualifizierung, wie aus der Pyrolyse der KSV Dinkelsbühl bekannt.

Disadvantages,

• • lack of explosion protection due to ignition with oxygen O2 below the solidification point of sewage sludge,
• • Underqualification according to the WO 2018/036839 A1, Fraunhofer;
• • Consequential damage due to underqualification, as known from the pyrolysis at KSV Dinkelsbühl.

1. a) bekannte Folgeschäden durch Unterqualifikation,
2. b) CE Kennzeichnung bei Verpuffung vor dem Beginn der Pyrolyse,
3. c) Folgekosten einer druckfesten Ausführung.

The fact is that the ignition temperatures of sewage sludge occur below the solidification temperatures from 200 °C. Disadvantage: Disregarding the solidification temperatures with active ignition and deflagration due to recirculation after the WO 2018/036839 A 1 of liquid material into the feed zone.
Significant disadvantage:

1. a) known consequential damage due to underqualification,
2. b) CE marking in the event of deflagration before the start of pyrolysis,
3. c) Follow-up costs for a pressure-resistant design.

The invention specified in claim 1 about energy generation with feed means for oxygen O2, based on the prior art WO 2018/036839 , Fraunhofer with a support of the deflagrations and after the EP 3 166 708 B1 , Climeworks AG and in the decarbonization of biomass using the example of Adliswil with the emission of CO2 - nitrous from the GHG N2O and the immission forecasts over 114 years for N2O from the combustion of biomass and sewage sludge in Werdhölzli, is the underlying problem for the treatment of the flue gases with CO2 and the separation of the CO2 from the flue gases to propose suitable treatment means to enable the removal of CO2 mixtures with H2O and the separation of the CO2 from the flue gases. Another task is to analyze and document the CO2 emissions as a footprint, in accordance with TA Luft 2.2.

This problem is solved by the features listed in claim 1, an energy generator with natural gas, a burner for natural gas, feeding means for oxygen O2 into the burner and a condenser for flue gases and in particular with an electrolyzer for obtaining hydrogen H2 and oxygen O2.

Advantageous further developments and embodiments of the invention are possible through the measures mentioned in subclaims 2 - 10.

The advantages achieved with the invention of energy generators with gas burners consist of feeding means for oxygen O2 into the gas burners and a condenser for flue gases in order to separate H2O and CO2 from water-containing flue gases at the dew point and to store CO2.

• • Verwendung der O2-Energieüberschüsse aus dem Elektrolyseur,
• • H2O-gas: Nenn-Menge H2O-gas nach
• • CH4 + 2 O2 >> CO2 + 2 H2O; GI. (1) (1000 x 36/44) von 820 kg H2O pro 1000 kg CO2, bezogen auf CH4,
• • Desorption von CO2 bei Climeworks AG mit CO2, H2O-gas,
• • 32 t H2O Einsparung pro t CO2 nach der EP 3 166 708 B1 ,
• • Vermeidung der Klima-folgeschäden in Adliswil, Zürich und Lindau (B).

Further advantages of energy generators with feeding agents for O2 and capacitors are, for CH4 and sewage sludge,

• • Use of the O2 energy surplus from the electrolyser,
• • H2O gas: Nominal amount of H2O gas
• • CH4 + 2 O2 >> CO2 + 2 H2O; G.I. (1) (1000 x 36/44) of 820 kg H2O per 1000 kg CO2, based on CH4,
• • Desorption of CO2 at Climeworks AG with CO2, H2O gas,
• • 32 t H2O savings per t CO2 after the EP 3 166 708 B1 ,
• • Avoiding consequential climate damage in Adliswil, Zurich and Lindau (B).

An advantageous feature of the energy generators is a combination with an electrolyzer to produce oxygen O2 and an increase in surplus O2 in the H2 technologies. Another advantage: a connection to Jule Verne 1875: “Water is the coal of the future”.

• Abkühlung des H2O-gas, auf den Siedepunkt von H2O und Verflüssigung sowie die Verwendung zur Desorption von CO2.

Another advantageous feature of the invention is the waste heat boiler and the generation of energy when separating gaseous H2O and CO2. Advantage: the separation process, namely condensation plus heat recovery. Another advantage:

• Cooling of the H2O gas to the boiling point of H2O and liquefaction as well as use for the desorption of CO2.

An advantageous embodiment of the invention is specified in claim 2. The development according to claim 2 makes it possible to provide an electrolyzer for obtaining hydrogen H2 and oxygen O2. This makes it possible to use the byproduct oxygen O2 in the amount of 1/2 O2 as an energy source in energy generators.

An advantageous embodiment of the invention is specified in claim 3. The development according to claim 3 makes it possible to provide a discharge line for hydrogen H2. This makes it possible with an energy generator to use natural gas, CH4, CxHy as energy for the production of hydrogen H2. Significant advantage: Realization with natural gas CH4 and surplus O2.

An advantageous embodiment of the invention is specified in claim 4. The development according to claim 4 makes it possible to provide gas storage for CO2 behind a condenser and a waste heat boiler. This makes it possible to store CO2 in a gas storage after condensation of the water H2O in a condenser. Significant advantage: material separation of H2O liquid and CO2 gaseous and below the dew point.

An advantageous embodiment of the invention is specified in claim 5. The development according to claim 5 makes it possible to provide a steam boiler. This makes it possible to store energy in the form of condensate.

An advantageous embodiment of the invention is specified in claim 6. The development according to claim 6 makes it possible to provide a supply line for electrical energy into the electrolyzer. By supplying electrical energy, it is possible to save energy from wind and solar in return for the use of oxygen O2. Advantage: Gaseous operating fluid CO2, H2O gas for CO2 desorption.

An advantageous embodiment of the invention is specified in claim 7. The development according to claim 7 makes it possible to provide a sampling line for CO2-H2O gases. This makes it possible according to the invention to produce gases from H2O gas and CO2 as operating fluid.

Significant advantage: replacement of steam generators, saving of material, unpressurized at atmospheric pressure.

An advantageous embodiment of the invention is specified in claim 8. The development according to claim 8 makes it possible to provide waste heat boilers for the extraction of electrical energy. This makes it possible to generate different energy, heat or electricity as needed over the course of a day. The main advantage: the range of usable energy.

An advantageous embodiment of the invention is specified in claim 9. The further development according to claim 9 makes it possible to provide a supply line for fuels CxHy from biomass and sewage sludge. This makes it possible to provide fuels CxHy from biomass and sewage sludge via the supply line. Significant advantage: extraction of CO2 from biomass, avoidance of nitrous oxide N2O.

An advantageous embodiment of the invention is specified in claim 10. The development according to claim 10 makes it possible to provide a discharge line for water H2O. This makes it possible to remove water H2O, obtained from natural gas and oxygen O2, in the extraction line. Significant advantage: feed water for an electrolyzer.

• 1 Einen Energieerzeuger mit Erdgas;
• 2 Fußabdruck einer CO2 Abscheidung ohne und mit der Gaserzeugung.

Further advantages of the invention consist of suitable apparatus technology for the gases H2 and O2, generated from the molecular H2O liquid and are shown below when used in the energy generator and with the use of the exhaust gas. Show it:

• 1 A natural gas energy generator;
• 2 Footprint of CO2 capture without and with gas generation.

• • das Abgas, CO2 und H2O zur Desorption von CO2 vorgesehen ist;
• • ein Kondensator zur Trennung des Abgases vorgesehen ist;
• • ein Gaskessel 17 als CO2 Speicher vorgesehen ist.

Energy producers with natural gas are in 1 with an electrolyzer and the use of oxygen O2 and a condenser for water vapor H2O, integrated in a diagram, shown, which consists of a supply line 1 of oxygen O2, a supply line 2 of natural gas, a burner 3 for O2 and natural gas, a waste heat boiler 4 , a steam turbine 5, a generator 6, a power supply 7, a busbar 8 of a power network, a current converter 9 for direct current, an electrolyzer 10, feed lines 20 with direct current, a water reservoir 11, a membrane 12 for dividing a free space 13 for a passage of the Hydrogen H2 and separation of H2 and oxygen O2 in the electrolyzer 10, with an exhaust line 1 for oxygen O2 and exhaust line 14 for hydrogen H2 and for flue gases from CH4 and O2 with an exhaust line 15, a withdrawal line 25 for gases, H2O gas and CO2 , a quench cooler 16 for separating the water vapor H2O from CO2, an exhaust line 19 for H2O and a storage 17 for the remaining amount of CO2 and a feed line 18 optionally for CxHy from biomass is constructed in such a way that

• • the exhaust gas, CO2 and H2O are intended for the desorption of CO2;
• • a condenser is provided to separate the exhaust gas;
• • a gas boiler 17 is provided as a CO2 storage.

• • Wasser als Energie Speicher der Zukunft, nach Jule Verne 1875;
• • Doppelter Nutzen als H2 und ½ O2;
• • Erzeugung von H2O-gas mit Sauerstoff O2;
• • Erzeugung von Wasser durch Trennung des Abgases;
• • Erzeugung von H2O-gas durch Verbrennen von H2 und ½ O2.

Advantage achieved:

• • Water as energy storage of the future, according to Jule Verne 1875;
• • Double benefit as H2 and ½ O2;
• • Generation of H2O gas with oxygen O2;
• • Production of water by separating the exhaust gas;
• • Production of H2O gas by burning H2 and ½ O2.

• • Trennung/Gewinnung von H2O aus Erdgas CH4,
• • H2O als Betriebsmittel zur Elektrolyse.

In addition to the representation of energy producers with natural gas, different versions of the condenser are possible depending on the location and the waste heat, e.g. from sewage sludge, which are not listed in detail. It is important that the gases are separated in the condenser in order to enable the advantages of the invention for decarbonization and the use of oxygen O2.
Significant advantage:

• • Separation/extraction of H2O from natural gas CH4,
• • H2O as an operating fluid for electrolysis.

Further advantages arise from the analysis of the CO2 footprint 2 .

The footprint of CO2 capture after the EP 3 166 708 B1 , Climeworks is after 2 without and with gas generation for the desorption of CO2 shown as a circular diagram, which consists of a circular area with the circumference 21 for the footprint of the superheated steam batches, of the circular segment 22 for the separation of 1 t CO2 and of the circular segment 23 for the CO2 formation and storage When producing the gases CO2, H2O gas for desorption of CO2, it is constructed in such a way that the increase in the CO2 footprint during CO2 desorption with superheated steam batches is shown as a circle segment 24.

• CO2 Fußabdruck als Immissionsprognose zur TA Luft 2.2,
• Analyse der Klimadefizite und der Unterqualifikationen.

Advantage achieved:

• CO2 footprint as an immission forecast for TA Luft 2.2,
• Analysis of climate deficits and underqualifications.

• CO2 Abscheidung - CarbonCapture - bei Swiss Re mit Einspritzung von Dampf
• Chargen nach der EP 3 166 708 986 B1 , im molaren Verhältnis 40 :1, wie folgt:

CO2 - 1000 kg = 1000/44 22,72 MOL CO2 Nenn-Menge Dampf: 16.350 kg Dampf Frischwasser, a) zur Dampferzeugung 16,35 t H2O b) zur Kondensation im Kühlturm ca 16,00 t H2O Nenn-Menge Frischwasser 32,35 t H2O/ t CO2 Betriebsmittel, überhitzter Dampf 170 °C Energie-bedarf/-Effizienz bei 170 °C i - Enthalpie ein (170 °C) 672,5 kcal/kg i - Enthalpie aus - 100 °C 639,1 kcal/kg (delta-)i genutzt 33,4 kcal/kg I, bei 75 % Effizienz 672,5 / 0,75 896,6 Kcal/kg Nenn-Effizienz 33,4/896,6 x 100 3,7 % IST-Verbrauch16.350 x 890,6 14.659.410 kcal CO2 Fußabdruck des Dampfbedarfes: Bildungswärme, E. Schmidt Gl. (224) 97.200 kcal/CO2 Fußabdruck 14.659.410 x 44/97200 6.636 kg Further advantages of the invention compared to the prior art are described in examples:

• CO2 capture - CarbonCapture - at Swiss Re with steam injection
• batches after EP 3 166 708 986 B1 , in a molar ratio of 40:1, as follows:

CO2 - 1000kg = 1000/44 22.72 MOLES CO2 Nominal amount of steam: 16,350 kg of steam fresh water, a) for steam generation 16.35 tons of H2O b) for condensation in the cooling tower approx 16.00 t H2O Nominal quantity of fresh water 32.35 t H2O/ t CO2 Operating fluid, superheated steam 170°C Energy requirements/efficiency 170°C i - enthalpy on (170 °C) 672.5 kcal/kg i - enthalpy from - 100 °C 639.1 kcal/kg (delta-)i used 33.4 kcal/kg I, at 75% efficiency 672.5 / 0.75 896.6 kcal/kg Rated efficiency 33.4/896.6 x 100 3.7% Actual consumption 16,350 x 890.6 14,659,410 kcal CO2 footprint of steam demand: Heat of formation, E. Schmidt Eq. (224) 97,200 kcal/CO2 Footprint 14,659,410 x 44/97200 6,636 kg

Achieved advantage: Immission forecasts according to TA Luft the CO2 footprint of 6.63 t CO2, the nominal efficiency of 3.7% with an energy requirement of 33.4x16,350 546,090 kcal. Energy generator with natural gas CH4 CO2, H2O Calorific value Eq. 225 E. Schmidt 212,400 kcal Input: 16kg CH4 + 64kg >> 44 kg CO2 + 36 kg H2O Energy requirement 649,090 kcal / t CO2 Rated energy at CH4 649,090 / 212,400 3.05CH3 Nominal quantity 3.05 x 22.41 68.5 Nm3 / t CO2 CO2 amount stored 3.05 x 44 134.2 kg CO2 / t CO2 Lower calorific value 212,400 - 36 x 539 = 192,996 kcal 649,090 / 192,996 = 3.36 CH4 / t CO2

Combustion temperature CO2 x 15.12 cp 15.12 kcal/MOL*, °C 2 H2O x 13.46 cp 26.92 kcal/MOI*, °C Total qw / °C 42.04 kcall °C Cooling to zero, 192,996 / 42.04 4,590°C *) based on 3,000 °C Achieved advantage of the invention: Saving on the steam generator H2O gas up to max 4,590°C Footprint reduction, net 1,000 kg CO2

Example of sewage sludge with safety-relevant utilization Composition: Source Kyoto SULZER/Chugai Ro Determination in wet sludge / kg DM Loss of ignition 65.7% C wt. % 33.0% H2 wt. % 5.1% Calorific value - kcal 3,900 kcal/kg Calorific value, after drying 3,810 kcal/kg Drying concept Container dryer Heat pump at 40 °C Compression cold Average energy requirement approx 20 kWh/PE a ^-1 Volatile C above the solidification point At 3,900 kcal/kg 33.0% TS quantity 70,000 ta ^-1 C total 70,000 x 0.33 23,100 t C a ^-1 CO2 capture with O2: 23,100 x 44/12 84,700 t CO2 a ^-1

Achieved security against fizzling out Approach: Warming around 300°C Temperature in the output material 300°C Air content, approach 0.5kg/m3 Oxygen approx. approach 0.1kg Heating around 300 °C: 0.5kg x 0.2cp x 300 degrees. 30 kcal Heat of formation with C + 1/2O2 67,850 kcal Heat release per m3 2 x 67,850 / 32 O2 x 0.1 427 kcal pressure increase 427 kcal 427 kcal / 30 kcal by factor 14.2

1. a) Starke Ausbreitung der Verpuffung mit Überhitzung zu einem Schaden mit Ausglühen der Rohrleitungen, wie im Falle KVA Dinkelsbühl, geschehen. Hersteller. Steinbeiß, Eisenmann.
2. b) Einsparpotentials von 85.000 t CO2 a^-1 sowie für den CO2-n Footprint.

Beispiel 2: Firmensitz Adliswil Immissionsprognose Ansatz für NH3 in TS, Klärschlamm 1 % (DIN-wert, Lindau) 1,45 % 0,058 kg * 0,01 NH3 * 365 d/a * 44/17 N2O * 300-fach Nenn-Menge, spez. 164 kg CO2 - n /EW, a^-1 EW-Einwohner 40.000 * 164/1.000 6.560 Mg CO2-n Merkmal: langzeit-stabil / 114 Jahre / im Ozonloch Result of underqualification and proof of

1. a) Strong spread of deflagration with overheating causing damage and burning out of the pipes, as happened in the case of KVA Dinkelsbühl. Manufacturer. Steinbeiss, Iron Man.
2. b) Savings potential of 85,000 t CO2 a ^-1 as well as for the CO2-n footprint.

Example 2: Adliswil headquarters Immission forecast Approach for NH3 in TS, sewage sludge 1 % (DIN value, Lindau) 1.45% 0.058 kg * 0.01 NH3 * 365 d/a * 44/17 N2O * 300 times Nominal quantity, spec. 164 kg CO2 - n /PE, a ^-1 PE population 40,000 * 164/1,000 6,560 Mg CO2-n Feature: long-term stable / 114 years / in the ozone hole

The updated climate and consequential damage: Immission from 2019 6,560 Mg CO2-n Immission from 2020: 6,560 + 6,560 13,120 Mg CO2-n Immission from 2021: 13,120 + 6,560 19,680 Mg CO2-n Current immission 19,680 + 6,560 26,240 Mg CO2-n The consequential damage until 2136 114 years In the focal point, the ozone hole (point of emission) 26,240 Mg * 114/2 CO2 nitrous 1,495,680 Mg CO2-n • Footprint according to TA Luft 2.2 1.495 gigaton CO2-n

List of reference symbols:

1

Feeding means, supply line for O2, extraction line for...

2

Natural gas supply line

3

Burners for natural gas, gases from biomass

4

Waste heat boiler

5

Steam turbine

6

generator

7

Power feed, supply line for

8th

Power rail, network

9

Current transformer, direct current

10

Electrolyzer

11

Water template

12

Membrane for H2

13

free space

14

Exhaust line for H2, extraction

15

Exhaust line for flue gases H2

16

Quench cooler, condenser

17

Gas storage for CO2

18

Supply of CxHy from biomass

19

Exhaust line for H2O

20

Direct current feed lines

21

Circular area, circumference of the circular area

22

Circle segment of 1 t CO2

23

Circle segment of stored CO2

24

Circular segment of the raised footprint

25

Sampling line for CO2/H2O gas.

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 3166708 B1 [0009, 0010, 0014, 0018, 0036]
• EP 3166708 A1 [0010]
• WO 2018036839 [0011, 0012, 0013, 0014]
• EP 3166708986 B1 [0038]

Claims (10)

Energy producers with natural gas, whereby - Burners (3) are intended for natural gas, - Feeding means (1) for oxygen O2 into the burners (3) - And a condenser (16) is provided for flue gases. Energy generator according to the above Patent claim 1 , wherein an electrolyzer (10) is provided for producing hydrogen H2 and oxygen O2. Energy generator according to one of the preceding claims, wherein a withdrawal line (14) is provided for hydrogen H2. Energy generator according to one of the preceding claims, wherein a gas storage (17) for CO2 and a waste heat boiler (4) are provided. Energy generator according to one of the preceding claims, wherein a steam boiler is provided. Energy generator according to one of the preceding claims, wherein a supply line (7) for electrical energy is provided in the electrolyzer (10). Energy generator according to one of the preceding claims, wherein a withdrawal line (25) is provided for CO2-H2O gases. Energy generator according to one of the preceding claims, wherein the waste heat boiler (4) is provided for extracting electrical energy. Energy generator according to one of the preceding claims, wherein a supply line (18) is provided for fuels CxHy from biomass and sewage sludge. Energy generator according to one of the preceding claims, wherein a discharge line (19) is provided for water H2O.

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