WO2020088757A1 - Installation de bioénergie - Google Patents

Installation de bioénergie Download PDF

Info

Publication number
WO2020088757A1
WO2020088757A1 PCT/EP2018/079869 EP2018079869W WO2020088757A1 WO 2020088757 A1 WO2020088757 A1 WO 2020088757A1 EP 2018079869 W EP2018079869 W EP 2018079869W WO 2020088757 A1 WO2020088757 A1 WO 2020088757A1
Authority
WO
WIPO (PCT)
Prior art keywords
condensate
exhaust gas
plant
bioenergy
scrubber
Prior art date
Application number
PCT/EP2018/079869
Other languages
German (de)
English (en)
Inventor
Marcel Huber
Georg Kreutner
Jan Krueger
Original Assignee
Syncraft Engineering 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 Syncraft Engineering Gmbh filed Critical Syncraft Engineering Gmbh
Priority to EP18795648.7A priority Critical patent/EP3874011A1/fr
Priority to PCT/EP2018/079869 priority patent/WO2020088757A1/fr
Publication of WO2020088757A1 publication Critical patent/WO2020088757A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/82—Gas withdrawal means
    • C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
    • C10J3/60—Processes
    • C10J3/64—Processes with decomposition of the distillation products
    • C10J3/66—Processes with decomposition of the distillation products by introducing them into the gasification zone
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/16—Integration of gasification processes with another plant or parts within the plant
    • C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
    • C10J2300/1643—Conversion of synthesis gas to energy
    • C10J2300/165—Conversion of synthesis gas to energy integrated with a gas turbine or gas motor

Definitions

  • the invention relates to a bioenergy plant, in particular a biomass power plant. Furthermore, the invention relates to a method for operating a bioenergy plant, in particular a biomass power plant, an exhaust gas aftertreatment system for a bioenergy plant, in particular a biomass power plant, a method for exhaust gas aftertreatment of a bioenergy plant, in particular a biomass power plant, and the use of a laundry condensate of a bioenergy plant, in particular a biomass power plant, for Exhaust gas cleaning.
  • Biomass gasification offers a very efficient option for the energetic use and / or electricity generation of biomass resources.
  • wood can be gasified and electrical current can be produced from the gas stream thus generated by combustion.
  • the so-called fluidized bed reactor technology can be used as the carburetor. Exhaust gas condensation can be provided to increase efficiency.
  • DE 35 09 782 C2 discloses a method and a device for cleaning and cooling exhaust gases from combustion, heating or chemical processes.
  • exhaust gas condensation The problem with exhaust gas condensation is high dew point temperatures and sulfur-containing components in the exhaust gas.
  • a high exhaust gas temperature of, for example, 180 ° C to 200 ° C leads to a considerable loss of energy, which lowers the efficiency.
  • the sulfur-containing components can be harmful to the environment and can also damage parts of a biomass power plant, for example due to corrosion.
  • An exhaust gas condensation can be used to separate air pollutants such as SOx and NOx, which can then be found in an exhaust gas condensate, for example.
  • This condensate is usually discharged into a sewage network, which means that these substances are disposed of without further use and the sewage is contaminated. Therefore, additional post-treatment may be necessary, in particular to be able to comply with the respective environmental regulations.
  • a preferred object of the present invention is to increase the efficiency of biomass power plants. Such an increase can relate both to the electrical efficiency and, alternatively or additionally, to an increase in the yield of useful materials in addition to the production of heat and / or energy.
  • a first aspect of the invention relates to a bioenergy plant, in particular a biomass power plant.
  • the bioenergy plant can comprise a gas generating device which is designed to generate a combustible gas stream from a biomass.
  • the bioenergy plant is also referred to as biomass power in the context of this document, although this does not have to be limited to the design as a power plant.
  • the biomass power plant can in particular comprise a gasification device as gas generation device, which is designed to generate a combustible gas flow from a biomass, in particular by means of a gasification process.
  • the gas generating device is also referred to as a gasification device, although this does not have to be limited to gas generation by means of a gasification process, for example the combustible gas can also be generated by a fermentation process.
  • the biomass power plant can further comprise a gas scrubber, which is designed to separate a scrubber condensate from the gas stream.
  • the biomass power plant can include a combustion device, such as an internal combustion engine, which is designed to burn the gas stream. In particular, this generates energy and an exhaust gas stream, preferably a flue gas stream.
  • the biomass power plant can have an exhaust gas condenser which is designed to separate an exhaust gas condensate from the exhaust gas stream.
  • the biomass power plant can be designed to mix at least part of the scrubber condensate with at least part of the exhaust gas condensate to produce a mixed condensate.
  • the biomass power plant can be designed to supply at least part of the scrubber condensate to the exhaust gas condenser as scrubbing liquid to promote the separation of the exhaust gas condensate.
  • the gas scrubber can be designed as a condensation cooler and / or a gas washing condensation cooler. Alternatively or additionally, the gas scrubber can be designed to cool the gas stream in order to increase the efficiency. In particular, the gas scrubber can be designed to make the thermal energy extracted from the gas stream by cooling available as useful energy, for example for generating electrical energy or for heating up other process areas of the biomass power plant.
  • the exhaust gas condenser can be designed to cool the exhaust gas flow and / or as an exhaust gas condensation cooler in order to also be able to increase the efficiency of the biomass power plant. Analogous to the gas scrubber, thermal energy of the exhaust gas extracted by cooling can be made available for further use by the exhaust gas condenser or exhaust gas condensation cooler.
  • Respective fluid streams of the biomass power plant can comprise combustible gas streams and / or exhaust gas streams, as well as optionally solid bodies carried therein, such as soot and ash.
  • the combustible gas flow and / or the exhaust gas flow can denote respective fluid flows before and / or after the separation of respective substances, for example before and / or after the separation of condensates and / or solids.
  • the terms “before” and “behind” can refer to the energy supply process.
  • another second device arranged in front of a first device can be understood to mean that a fluid stream, which can comprise fluidic, gaseous and / or solid components (for example the gas stream), only passes through this second device before it reaches the first device.
  • the expression “then” in the context of this description can not only denote a chronological order, but alternatively or additionally also have a meaning in the sense of a process direction of the biomass power plant, similar to "before” or “after”.
  • Respective process flows of respective process fluids of the biomass power plant, such as gas flow and exhaust gas flow can be continuous or intermittent.
  • the biomass power plant can, for example, be designed such that biomass is first at least partially converted into a gas stream in a gasification device. This gas stream is cleaned in the gas scrubber with the excretion of scrubber condensate. The gas stream separated from the scrubber condensate is then converted to energy and exhaust gas in the combustion device. The exhaust gas can then also be cleaned in the exhaust gas condenser, the exhaust gas condensate then occurring as a by-product and the cleaned exhaust gas stream subsequently being discharged into the environment, for example.
  • the biomass power plant in particular the exhaust gas condenser, can be designed to introduce the washing condensate into the exhaust gas flow for conveying or changing the excretion of the exhaust gas condensate.
  • the scrubber condensate can be sprayed into the exhaust gas stream.
  • the exhaust gas condensate can be eliminated, with fewer additives or no additives having to be supplied externally.
  • a respective remaining thermal energy can be easily recovered from the exhaust gas stream.
  • the exhaust gas flow can be dehumidified.
  • the respective pollutants from the exhaust gas stream become particularly good washed out, so that particular parts of the biomass power plant, such as the exhaust gas condenser, are less or not attacked by the exhaust gas condensate.
  • the corrosion of the exhaust gas condenser by the scrubber condensate can thus be reduced or prevented, in particular by rapidly flushing out the exhaust gas condensate due to the increase in quantity by feeding the scrubber condensate into the exhaust gas condenser and / or by changing, in particular increasing, the pH value of the exhaust gas condensate to a more neutral range .
  • the biomass power plant generates energy in that energy is generated in the sense of conversion and / or utilization.
  • energy inherently stored in a wood is made available in the form of electrical energy and heat.
  • the combustible gas stream can be referred to, for example, as lean gas, synthesis gas and / or wood gas, in particular depending on the precise recycling or conversion process that takes place in the biomass power plant.
  • a biomass power plant which provides heating energy exclusively or in addition to the electrical energy can also be referred to as a biomass heating power plant, for example.
  • the biomass power plant can also provide mechanical power, for example, it being possible for the biomass power plant to be designed as a gas generator or gas boiler.
  • the exhaust gas stream can also contain gaseous combustion products and contaminants, in particular sulfur oxides and nitrogen oxides (SO x and NO x ). According to the invention, however, the proportion of these impurities, in particular SO x and NO x, can be reduced. Respective sulfur oxides and nitrogen oxides (SO x and NO x ) can be completely or partially removed from the exhaust gas flow through the exhaust gas condenser, these then preferably being bound in the exhaust gas condensate.
  • the exhaust gas flow can also be designed as a flue gas in that an exhaust gas is a component. In the present case, exhaust gas can also be used synonymously for volatile combustion products.
  • this description speaks of scrubber condensate and / or exhaust gas condensate, wherein in each case only part of the scrubber condensate and / or at least part of the exhaust gas condensate can be meant.
  • the entire scrubber condensate and / or the entire exhaust gas condensate need not necessarily be used. It can only be part of one at a time Find process fluids.
  • the mixing can take place continuously and / or intermittently in the biomass power plant, it also being possible to mix respective solid, liquid and / or gaseous phases with one another.
  • the mixing of the exhaust gas condensate and the scrubbing condensate can take place in a separate room and / or in a separate device, or else in the exhaust gas condenser itself and / or preferably in the gas scrubber.
  • Mixing preferably takes place as the respective process fluids pass through the exhaust gas condenser and / or the gas scrubber, in particular in a sump of the exhaust gas condenser, the exhaust gas condenser also being able to be referred to as an exhaust gas washer.
  • Elimination in the context of this application can in particular indicate a positive influence on the separation of substances from a gaseous process fluid such as a condensate, in particular in a liquid phase.
  • a gaseous process fluid such as a condensate
  • the scrubber condensate in the exhaust gas condenser can be used to cool the exhaust gas stream and thereby favor or enable the separation or excretion of substances in liquid form from the exhaust gas stream.
  • the laundry condensate then acts as a cooling stream.
  • the exhaust gas condensate can also assume such a role in the gas scrubber. Fluids condensed out in this way can be discharged from the gas scrubber and / or exhaust gas condenser, for example through a sump with overflow or controlled valves from the gas scrubber or exhaust gas condenser.
  • Elimination can take place with or without the help of additional liquids, such as a washing liquid such as water or a soap solution.
  • additional liquids such as a washing liquid such as water or a soap solution.
  • the exhaust gas condensate and / or the scrubber condensate is preferably eliminated by means of condensation, in particular with the aid of additional condensates and / or liquids.
  • Elimination can also be done using a filter, osmosis, mechanical devices such as a gate and / or other methods.
  • the excretion by means of the scrubber condensate or gas condensate can be promoted here, for example, by rinsing the respective filter or other mechanical devices and / or by removing the separated substances.
  • Respective condensates and / or washing liquids can be supplied continuously and / or intermittently, in particular by spraying. After the scrubbing condensate and / or exhaust gas condensate has been separated, further filtering and / or cleaning can take place, for example by separating additional washing liquids and / or solids.
  • the separation or deposition and / or a respective cooling can take place together, in particular in one stage, or also essentially in succession and / or in multiple stages.
  • the biomass power plant can include respective measurement sensors and control devices, in particular for switching and / or controlling the respective fluid flows and / or devices.
  • the biomass power plant can comprise respective sensors and / or control devices in order to control the excretion of the scrubber condensate, the excretion of the exhaust gas condensate and / or their mixing with one another.
  • the gas scrubber and / or the exhaust gas condenser are preferably designed as a recirculating heat exchanger, scrubbing column or recirculating cooler scrubbing column, in which case both the gas scrubber and the exhaust gas condenser can then be referred to as a condenser.
  • a cooling liquid is passed through the gas scrubber and / or exhaust gas condenser in a largely closed circuit in order to promote the separation. Due to the closed cycle, a concentration can be achieved in the respective separated phases.
  • the exhaust gas condensate, scrubber condensate and / or mixed condensate can be discharged intermittently or continuously from the respective condenser when a certain substance concentration is reached, for example by means of valves.
  • the scrubber condensate and / or the exhaust gas condensate can also be fed continuously or intermittently to the respective condenser.
  • Respective quantities can be controlled as described above. In this case, both a stable substance concentration level and a stable substance quantity in the respective condenser are preferably set within predetermined limit values in order to achieve a stable separation process and constant substance compositions in the respective process fluids.
  • Respective parts of the power plant in particular respective capacitors, can have a chamber with at least one inlet and with at least one outlet.
  • the preceding process fluids are fed to the respective part through the input and the respective process fluids from the respective part are carried out again via the outlet.
  • the combustible gas stream can enter the gas scrubber via an inlet and the cleaned or washed gas stream can exit again via an outlet.
  • the gas scrubber can comprise a second outlet, from which the scrubber condensate separated from the gas stream is discharged.
  • the invention is based on an idea to use both the exhaust gas condensate and the scrubber condensate instead of having to dispose of them in a complex manner.
  • the scrubber condensate can be used to protect the exhaust gas condenser and to promote the separation of the exhaust gas condensate.
  • this can increase efficiency and, on the other hand, the biomass power plant can be particularly environmentally friendly, in particular by preventing pollutants from being discharged into the environment.
  • the exhaust gas condensate can contain valuable plant nutrients, especially in the form of nitrogen, which would otherwise be lost.
  • the laundry condensate can also contain ammonium-containing compounds, which would otherwise also be lost.
  • Another idea is to use the scrubber condensate to buffer the exhaust gas condensate from the biomass power plant, in particular to increase its usually acidic pH.
  • the exhaust gas condensate is less corrosive and the respective walls of the exhaust gas condenser and / or the respective fluid lines can be formed from less corrosion-resistant and therefore less expensive material.
  • this mixing or changing of the pH value makes it easier to comply with the respective limit values, such as those specified by the AEV in Germany.
  • the normally acidic exhaust gas condensate can be at least partially or completely neutralized by a slightly basic scrubbing condensate.
  • certain substances can be fed into a wastewater network without the respective limit values being exceeded, respective parts of the wastewater network being damaged and / or an environmental impact threatening.
  • An admixture of urea, for example, to improve exhaust gas purification can thus optionally be dispensed with, so that additional costs can be prevented or at least reduced by these feedstocks.
  • the exhaust gas condensation enables the latent heat in the exhaust gas to be used, which would otherwise be lost.
  • a considerable part of the sensitive thermal performance can be achieved, for example, by cooling the exhaust gas from approx. 200 ° C to the water dew point at approx. 43 ° C. With further cooling, the recovered heat output from the exhaust gas can be almost doubled due to the latent heat. In the area of latent heat, even small changes in the exhaust gas outlet temperature have a very large influence on the recovered heat output. Due to the flue gas condensation, a heat output increase of 10 to 15% can result in a considerable increase in efficiency. By using the laundry condensate, the use of additional process fluids can be reduced or even become completely unnecessary. This provides a self-contained, highly efficient energy conversion process. The production of fertilizers can also create a self-contained nutrient cycle, which offers enormous advantages in terms of both efficiency and environmental pollution.
  • the biomass power plant comprises a mixing device which is connected downstream of the exhaust gas condenser and the gas scrubber and is designed to mix at least part of the scrubber condensate with at least part of the exhaust gas condensate.
  • a mixing device which is connected downstream of the exhaust gas condenser and the gas scrubber and is designed to mix at least part of the scrubber condensate with at least part of the exhaust gas condensate.
  • the biomass power plant is designed to supply at least a part of the exhaust gas condensate to the gas scrubber as scrubbing liquid to promote the separation of the scrubber condensate.
  • a mixed condensate or scrubbing condensate with the advantageous properties described above can also be produced here if necessary.
  • the laundry condensate can thus have suitable material compounds as fertilizers.
  • it can be prevented that strongly basic condensates are present in the gas scrubber over a longer period of time, which could possibly damage it.
  • the laundry condensate can also have properties of the above-described mixed condensate, in particular be essentially pH-neutral and have nitrogen compounds, in particular as fertilizers.
  • the exhaust gas condensate in the gas scrubber can bring about an improved cleaning of the combustible gas stream from the scrubber condensate or the substances contained therein.
  • the supply of at least a part of the exhaust gas condensate to the gas scrubber as washing liquid for promoting the excretion of the scrubbing condensate can alternatively or additionally to the mixing of at least a part of the scrubbing condensate with a part of the exhaust gas condensate to produce a mixed condensate and / or to supply a part of the scrubbing condensate to the exhaust gas condenser as a washing liquid to promote the separation of the exhaust gas condensate.
  • the exhaust gas condenser and the gas scrubber can also be formed by a common circulation condenser, in particular a two-stage circulation condenser. Then, in particular, the liquid emerging from the gas scrubber can be introduced into the exhaust gas condenser and the liquid emerging from the exhaust gas condenser back into the gas scrubber. Liquid can then be removed from the common circuit in order to obtain a mixed condensate. This is preferably removed after the exhaust gas condenser stage in order to obtain the desired substance concentration. The reduction of the circulating liquid in the common circulation condenser due to the removal or discharge can be compensated for by adding new washing liquid, such as water.
  • the washing liquid fed continuously or intermittently to the common circulating condenser is preferably pre-charged initiated in the gas washer or in the gas washer.
  • the gas scrubber is designed to separate out a basic scrubber condensate, in particular a slightly basic one, preferably with a pH of 7.5 to 10, particularly preferably 8 to 9.5.
  • the gasification device can be designed to generate a combustible gas stream in which a basic scrubber condensate is excreted when it cools down.
  • a laundry condensate is particularly advantageous with regard to the promotion of the separation of exhaust gas condensate and / or the mixing with exhaust gas condensate.
  • the gas scrubber is designed to separate ammonium-containing scrubber condensate, which in particular comprises NH 4 HC0 3 .
  • the gasification device can be designed to generate a gas stream in which such a washing condensate is excreted when it cools down.
  • a laundry condensate can be generated which is technically usable, preferably in the plant area, particularly preferably in industrial plants.
  • the gas scrubber is therefore preferably designed to produce a scrubber condensate with an economically usable concentration of respective ammonium-containing compounds.
  • the concentration and in particular a usable concentration can also mean that significantly more substance compounds of the desired type are generated than is done in a targeted manner in conventional biomass power plants, for example due to impurities.
  • the scrubber condensate is also particularly suitable for being used to promote the excretion of the exhaust gas condensate and / or for mixing in order to produce further usable substances, in particular so that a fertilizer is produced.
  • the exhaust gas condenser is designed to separate out an acidic exhaust gas condensate, preferably with a pH of 0.1 to 5, particularly preferably 1 to 3.
  • the combustion device can in particular be designed for this purpose, to generate an exhaust gas stream in which such an exhaust gas condensate is excreted by cooling, optionally with the addition of a washing liquid and / or a washing condensate.
  • the exhaust gas condensate can be removed from the exhaust gas stream particularly well, in particular the excretion can then be conveyed particularly well through the scrubber condensate.
  • a fertilizer can be produced particularly advantageously using the exhaust gas condensate.
  • the exhaust gas condenser is designed to separate out a sulfate-containing and / or nitrate-containing exhaust gas condensate, which in particular comprises H 2 S0 4 and / or HN0 3 .
  • the exhaust gas condenser can be designed to produce an exhaust gas condensate with a sufficient concentration of sulfate-containing and / or nitrate-containing substances, in particular with a technically usable, preferably plant-technically usable, particularly preferably in industrial plants and / or economically usable concentration.
  • the exhaust gas can therefore contain nitrogen oxides and / or sulfur oxides and / or nitrates, which are washed out in the exhaust gas condenser and thereby separated from the exhaust gas stream, and / or converted there with the help of the scrubber condensate into economically usable substance compounds such as plant nutrients instead of being expensive as pollutants to be disposed of.
  • both the gasification device and the combustion devices can be designed accordingly in order to include corresponding material compounds and / or fluid flows during the respective conversion of respective process fluids, such as the biomass and the combustible gas flow to produce appropriate substances and / or pH values.
  • the biomass power plant is designed to generate an essentially pH-neutral mixed condensate and / or exhaust gas condensate, in particular with a pH of 5.5 to 8.5, particularly preferably 6. 5 to 7.5.
  • This mixed condensate can be generated by a corresponding proportionate mixing of exhaust gas condensate and scrubber condensate.
  • a larger proportion of scrubber condensate is both generated in terms of process technology in the biomass power plant and is necessarily used, in particular due to the only slightly basic scrubber condensate in comparison to the acidic exhaust gas condensate.
  • the above-mentioned pH value means that the AEV requirements can be met particularly well.
  • the mixed condensate is for direct introduction into the Sewage network suitable and can also be handled safely by people.
  • mixed condensate is to be understood in such a way that exhaust gas condensate and scrubber condensate are separated separately and then mixed.
  • the essentially pH-neutral exhaust gas condensate can preferably be produced by using or introducing scrubber condensate to promote the separation of exhaust gas condensate in the exhaust gas condenser. So here the usual acidic exhaust gas condensate is not generated, but an exhaust gas condensate can be directly excreted, which is similar in properties to the mixed condensate, since it includes both the components of the classic exhaust gas condensate with the acidic pH value and the sulfur oxides and nitrogen oxides as well the components usually slightly basic laundry condensate with the ammonium compounds.
  • respective substances can also directly form such compounds in the exhaust gas condensate that a plant nutrient is generated and contained in the exhaust gas condensate, in particular in a usable concentration.
  • the exhaust gas condenser can be designed to separate out an exhaust gas condensate which essentially corresponds to a mixed condensate and could alternatively also be referred to as a mixed condensate.
  • the biomass power plant is designed to generate a mixed condensate and / or exhaust gas condensate comprising a nitrogen compound, in particular with a nitrogen compound suitable as a fertilizer or as a fertilizer additive, preferably (NH 4 ) S0 4 and / or NH 4 N0 3 .
  • a nitrogen compound suitable as a fertilizer or as a fertilizer additive preferably (NH 4 ) S0 4 and / or NH 4 N0 3 .
  • Such material compounds are particularly suitable as fertilizers for plants, preferably useful plants.
  • a technically good and / or economically usable concentration of the substance in the mixed condensate and / or exhaust gas condensate is preferably generated. Subsequent cleaning and / or filtering may be necessary, for which the biomass power plant may include a corresponding aftertreatment device.
  • the exhaust gas condensate preferably comprises such nitrogen compounds if it is eliminated with the aid of the scrubber condensate.
  • Conventional exhaust gas condensate for example, which is only excreted with a washing liquid such as a soap solution, normally only has nitrogen oxides and sulfur oxides. Elimination with the aid of the laundry condensate means that the respective useful substances can be eliminated instead of the respective pollutants.
  • the gasification device comprises a reactor, in particular a fluidized bed reactor, a pyrolysis device and / or a full-flow oxidation device.
  • the carburetor device can be configured as described in WO 2008/110383 A2.
  • a preferred arrangement of the biomass power plant provides that biomass and oxidizing agents, such as air and oxygen, are used in a pyrolysis device.
  • the pyrolyzed biomass is treated with oxidizing agent in the full-flow oxidation device.
  • the pre-oxidized pyrolysed biomass is mixed in the reactor for reduction with reducing agents, such as air and / or oxygen, to produce a combustible gas stream, it being possible for certain impurities to be eliminated. Coal can also belong to these contaminants.
  • the biomass power plant comprises a filter device for filtering the gas flow generated in the gasification device, in particular for filtering coal out of the gas flow, the filter device preferably being arranged between the gasification device and the gas scrubber.
  • a further usable activated carbon can be filtered out.
  • the biomass power plant is designed to moisten the filtered coal with at least a part of the mixed condensate and / or the exhaust gas condensate.
  • the exhaust gas condensate is used, which has been eliminated by means of the scrubber condensate and therefore has the positive properties described above, in particular comprises particular substance compounds which can be used as fertilizers. This enables the activated carbon to be enriched with other nutrients, making it particularly suitable as a nutrient medium for the respective plants.
  • a moistening device for this moistening of the filtered coal, for example, a moistening device can be provided which, for example, enables the mixed condensate and / or exhaust gas condensate to be sprayed onto the filtered coal.
  • the moistening device can also allow mechanical mixing.
  • the moistening device can also be designed as a mixing device, with laundry condensate and the conventional exhaust gas condensate described above being fed directly to the coal and only mixed with the coal in the mixing device will.
  • a mixed condensate can also be produced in this way, an additional moistening or mixing process step being saved.
  • the coal can effect further filtering and also bind any remaining pollutants in an environmentally friendly form.
  • the exhaust gas condensate and / or the mixed condensate can also be introduced, in particular sprayed, into the filter device in order to convey the filtering out of the coal out of the gas stream and, if necessary, to enrich it directly with the plant nutrients.
  • the biomass power plant comprises a cooling device which is designed to cool the gas stream before it is fed to the gas scrubber, in particular to below 200 ° C., particularly preferably to approximately 100 ° C. or less.
  • This cooling can include the generation of heat from the gas stream, which can be fed back to the respective other process steps.
  • the heat extracted from the gas stream can also be made available as heating.
  • the gas scrubber can advantageously be designed for lower temperatures. At the same time, the removal of the laundry condensate can be particularly efficient. Overall, the efficiency of the biomass power plant can be increased.
  • the gas scrubber is designed to cool the gas stream to below 50 ° C., preferably to approximately 25 ° C. or less.
  • the gas scrubber is designed to cool the gas flow to temperatures below the dew point of the substances that are to be contained in the scrubber condensate.
  • a particularly high proportion of ammonium compounds can be eliminated from the gas stream.
  • the exhaust gas condenser is designed to cool the exhaust gas stream to below 50 ° C., preferably to below 43 ° C., particularly preferably to a temperature between 20 ° C. and 40 ° C. or less. Even so, the biomass power plant can be particularly efficient.
  • the exhaust gas stream can thus preferably be cooled to a temperature which is below the dew point of the substances which should be contained in the exhaust gas condensate and / or should not escape into the environment with the exhaust gas stream, such as sulfur, nitrogen and / or nitrate compounds .
  • the biomass power plant is designed to feed the respective fluid flows of the energy generation process back to the process again at another point in the process by means of heat extracted from the biomass power plant designed for cooling.
  • respective cooling devices, the gas scrubber and / or the exhaust gas condenser can be designed to use heat extracted from respective fluid flows, such as the combustible gas flow and exhaust gas flow, for preheating the respective fluids of the process.
  • the biomass can be heated before being fed to the gasifier.
  • the biomass is advantageously dried and / or heated in this way.
  • the respective oxidizing agents used such as air and oxygen, can be heated before being fed into the process of the biomass power plant.
  • Such a preheating in the respective partial areas or steps of the gasification process of the gasification device brings about an increase in the efficiency of the biomass power plant.
  • the heat is therefore preferably returned to the process at a point which is suitable for increasing the efficiency of the biomass power plant.
  • this thermal energy can also be used differently, for example for drying the filtered coal, which can also be viewed as part of the process of the biomass power plant, or as district heating, which can also be viewed as part of the energy generated by the power plant .
  • Another aspect of the invention relates to a method for operating a biomass power plant.
  • the method for operating a biomass power plant can be designed according to the first aspect of the invention.
  • the features and advantages resulting from the biomass power plant in accordance with the first aspect of the invention can be found in the descriptions of the first aspect of the invention, advantageous configurations of the first aspect of the invention being regarded as advantageous configurations of the second aspect of the invention and vice versa.
  • the method for operating a biomass power plant can include the step of generating a combustible gas stream from a biomass by means of a gasification device. Furthermore, the method can include the separation of a scrubber condensate from the gas stream by means of a scrubber. Furthermore, it can be provided in the method that the gas stream is burned by means of a combustion device, energy and an exhaust gas stream is generated. The energy can be made available, for example, in the form of electrical energy, mechanical energy and / or thermal energy. In the method, an exhaust gas condensate can be separated from the exhaust gas stream by means of an exhaust gas condenser. In the method, it can further be provided that the gas stream is cooled down with the scrubbing condensate being separated out. The method can also provide for the exhaust gas stream to be cooled with the excretion of the exhaust gas condensate.
  • the method may include mixing at least part of the scrubber condensate with at least part of the exhaust gas condensate to produce a mixed condensate.
  • the method can also include supplying at least a part of the scrubber condensate to the exhaust gas condensate as a scrubbing liquid to promote the separation of the exhaust gas condensate.
  • an additional usable substance such as a fertilizer compound
  • This fertilizer compound can be made available as a mixed condensate by mixing the scrubber condensate with the exhaust gas condensate.
  • the scrubber condensate can be eliminated substantially pH-neutral and / or the respective fertilizer compounds in a comprehensive manner in that the scrubber condensate is eliminated from the exhaust gas stream as scrubbing liquid by means of the exhaust gas condensate.
  • the method according to the second aspect of the invention can provide that at least part of the exhaust gas condensate is fed to the gas scrubber as washing liquid for promoting the separation of the scrubber condensate.
  • the method according to the second aspect of the invention can comprise producing a basic laundry condensate, in particular a slightly basic one, preferably with a pH of 7.5 to 10, particularly preferably 8 to 9.5.
  • the method according to the second aspect of the invention may include that a ammonium-containing laundry condensate is generated, which in particular comprises NH 4 HCO3.
  • the method according to the second aspect of the invention can comprise producing an acidic exhaust gas condensate, preferably with a pH of 0.1 to 5, particularly preferably 1 to 3.
  • This exhaust gas condensate is particularly suitable for mixing with the scrubbing condensate to produce the Mix condensate, which is suitable as a fertilizer and / or for direct discharge into the sewage network.
  • the method according to the second aspect of the invention can provide that a sulfate-containing and / or nitrate-containing exhaust gas condensate is generated, in particular comprising H 2 SO 4 and / or HNO 3 .
  • This exhaust gas condensate is particularly suitable for mixing with the scrubber condensate to produce the mixed condensate, it then being possible to provide a substance combination suitable as a fertilizer.
  • the method according to the second aspect of the invention can include producing an essentially pH-neutral mixed condensate and / or exhaust gas condensate, in particular with a pH of 5.5 to 8.5, particularly preferably 6.5 to 8, preferably by mixing the exhaust gas condensate and the scrubber condensate in a quantity-coordinated manner and / or by supplying the scrubber condensate to the exhaust gas condenser as scrubbing liquid, in particular in a quantity-coordinated manner.
  • Parts of the exhaust gas condensate and / or the scrubber condensate may then be excess. These parts can then either be returned to the process, for example in a recirculation, or, if appropriate, disposed of separately.
  • respective supplementary substances can be added to the process, for example by mixing in the mixing device and / or spraying into the exhaust gas condenser, in order to completely convert the scrubbing condensate to aid in the elimination of the exhaust gas condensate and / or the exhaust gas condensate and the scrubbing condensate thereof Mixing to achieve the mixed condensate.
  • additional nitrogen and / or sulfate compounds can be fed to the process in order to completely convert the respective ammonium compounds of the scrubber condensate into a substance compound convert which is suitable as a fertilizer or fertilizer additive.
  • a mixed condensate and / or an exhaust gas condensate is generated with a usable nitrogen compound, in particular with a nitrogen compound suitable as a fertilizer, preferably (NH 4 ) S0 4 and / or NH 4 N0 3 .
  • the gas flow generated by the gasification device is filtered, preferably coal being filtered from the gas flow, the gas flow preferably being filtered after the gasification device and before being introduced into the gas scrubber.
  • the filtered coal is moistened with at least part of the mixed condensate and / or the exhaust gas condensate.
  • the filtered coal is preferably moistened with a mixed condensate and / or an exhaust gas condensate, which comprises a nitrogen compound suitable as a fertilizer in order to enrich it with plant nutrients.
  • the respective substance compounds suitable and / or intended for further use such as, for example, the substance compounds provided as fertilizers, are generated in a technically and / or economically usable concentration.
  • the substance compounds provided as fertilizers are generated in a technically and / or economically usable concentration.
  • it is not intended to generate only those concentrations which are inevitably generated by impurities and / or normal process variances in conventional biomass power plants in a negligible manner.
  • the gas stream is cooled before being fed to the gas scrubber, in particular to below 200 ° C., preferably to approximately 100 ° C. or less.
  • the gas stream is preferably not cooled to a temperature which is below the dew point of the scrubber condensate, in particular below a dew point of ammonium-containing compounds in the gas stream.
  • the gas stream is cooled to below 50 ° C., preferably to approximately 25 ° C. or less, before it is burned. This cooling can take place in particular in the gas scrubber, with the scrubbing condensate being eliminated. This can increase efficiency.
  • the exhaust gas stream is cooled to below 50 ° C., preferably to below 43 ° C., particularly preferably to a temperature between 20 ° C. and 40 ° C. in order to separate the exhaust gas condensate fewer.
  • a particularly high proportion of nitrogen and / or sulfate compounds is eliminated from the exhaust gas stream, in particular with the aid of a washing liquid, preferably by means of the washing condensate as washing liquid.
  • a third aspect of the invention relates to an exhaust gas aftertreatment system for a biomass power plant.
  • the exhaust gas aftertreatment system can be suitable for a biomass power plant according to the first aspect of the invention and for carrying out a method according to the second aspect of the invention.
  • the features and advantages resulting from the biomass power plant in accordance with the first aspect of the invention and the method in accordance with the second aspect of the invention can be found in the descriptions of the first and second aspects of the invention, with advantageous configurations of the first and second aspects of the invention as advantageous configurations of the third aspect of the invention and are to be viewed in reverse.
  • the exhaust gas aftertreatment system can be designed to provide a scrubber condensate which has been separated from a combustible gas stream of the biomass power plant, which was generated from the biomass power plant by means of the biomass power plant, with an exhaust gas condensate which is derived from an exhaust gas stream of the Biomass power plant was eliminated, which was generated by means of the biomass power plant during the combustion of the gas stream to mix.
  • a scrubber condensate which has been separated from a combustible gas stream of the biomass power plant, which was generated from the biomass power plant by means of the biomass power plant, with an exhaust gas condensate which is derived from an exhaust gas stream of the Biomass power plant was eliminated, which was generated by means of the biomass power plant during the combustion of the gas stream to mix.
  • the exhaust gas aftertreatment system can have a mixing device which is preferably designed to control the respective amounts of scrubber condensate and exhaust gas condensate for the mixing.
  • a mixing device which is preferably designed to control the respective amounts of scrubber condensate and exhaust gas condensate for the mixing.
  • the exhaust gas aftertreatment system according to the third aspect of the invention can be designed to use at least a part of the scrubber condensate, which was separated from the combustible gas stream of the biomass power plant, which was generated from the biomass by means of the biomass power plant, as scrubbing liquid to promote the separation from the exhaust gas stream of the Biomass power plant, which was generated by means of the biomass power plant during the combustion of the gas stream, to be used, in particular by feeding into an exhaust gas condenser of the biomass power plant.
  • a quantity of other scrubbing liquid can be reduced or dispensed with entirely.
  • the scrubber condensate provides a kind of corrosion protection in the exhaust gas condenser, for example by a slightly basic scrubber condensate causing a less acidic or even essentially neutral exhaust gas condensate to be removed.
  • the exhaust gas condensate is particularly environmentally friendly and particularly easy to handle.
  • the exhaust gas condensate can thus contain useful compounds in a usable concentration as plant nutrients.
  • a fourth aspect of the invention relates to a method for exhaust gas aftertreatment of a biomass power plant.
  • the method for exhaust gas aftertreatment of a biomass power plant can be particularly suitable for the exhaust gases of a biomass power plant according to the Treating the first aspect of the invention can be designed as part of the method according to the second aspect of the invention and / or designed to operate the exhaust gas treatment system according to the third aspect of the invention.
  • a laundry condensate which has been separated from a combustible gas stream of the biomass power plant, which was generated from a biomass by means of the biomass power plant with an exhaust gas condensate which has been separated from an exhaust gas stream of the biomass power plant, which was generated by the biomass power plant when the gas stream was burned.
  • This mixing can be carried out in particular with the aid of a mixing device of the biomass power plant or its exhaust gas aftertreatment system.
  • the mixing can also take place in an exhaust gas condenser after separation of the exhaust gas condensate and / or in a gas scrubber after removal of the scrubber condensate.
  • At least a part of the scrubber condensate, which was removed from the combustible gas stream of the biomass power plant, which was generated from the biomass by means of the biomass power plant, as washing liquid for promoting the separation from the exhaust gas stream of the biomass power plant, which was generated by means of the biomass power plant during the combustion of the gas stream, is used, in particular by feeding into an exhaust gas condenser of the biomass power plant and / or an exhaust gas aftertreatment system of the biomass power plant.
  • a fifth aspect of the invention relates to the use of a scrubber condensate for exhaust gas purification.
  • the fifth aspect of the invention relates to the use of a scrubber condensate for neutralizing an exhaust gas condensate which has been separated from the exhaust gas of the biomass power plant.
  • Exhaust gas cleaning can do that Promote excretion of exhaust gas condensate include.
  • the laundry condensate can be used in the biomass power plant according to the first aspect of the invention, the method according to the invention aspect, the exhaust gas aftertreatment system according to the third aspect of the invention and / or the method for exhaust gas aftertreatment of a biomass power plant according to the fourth aspect of the invention.
  • first, second, third and fourth aspect of the invention can be found in the descriptions of the first, second, third and fourth aspect of the invention, the advantageous configurations of the first, second, third and fourth aspects of the invention being advantageous configurations of the fifth Invention aspect and vice versa.
  • the scrubber condensate has been separated from a combustible gas stream of the biomass power plant, which was generated from a biomass by means of the biomass power plant, and with at least part of an exhaust gas condensate, which is from an exhaust gas stream of the biomass power plant, which was generated by the biomass power plant when the gas stream was burned, is mixed.
  • the scrubber condensate is used as scrubbing liquid to promote the separation of the exhaust gas condensate from the exhaust gas stream of the biomass power plant, which was generated by the biomass power plant when the gas stream was burned, in particular by feeding into an exhaust gas condenser of the biomass power plant.
  • laundry condensate advantageously enables an increased efficiency to be achieved in a biomass power plant.
  • respective pollutants which would otherwise have to be disposed of, filtered and / or cleaned in a complex manner, can be converted into respective useful materials, in particular fertilizers.
  • This fertilizer then represents another product of the biomass power plant, which can be sold, for example.
  • Figure 1 schematically illustrates a biomass power plant.
  • FIG. 2 schematically illustrates an exhaust gas aftertreatment of the biomass power plant according to FIG. 1.
  • FIG. 1 schematically illustrates a bioenergy plant which is designed as a biomass power plant 10 and by means of which biomass 12 is converted. Energy is generated, preferably in the form of electrical current 14 and heat 16. Furthermore, so-called biochar 18 is preferably produced, which is also produced as a usable conversion product by the biomass power plant 10 during the energy generation or conversion process.
  • the biomass power plant 10 comprises a gas generating device 20 designed as a gasification device 20, which is designed to generate a combustible gas stream 22 from the biomass 12 by means of a gasification process.
  • the combustible gas stream 22 is illustrated in the present example by respective arrows in the lines of the biomass power plant 10. If wood is used, for example, as biomass 12, the combustible gas stream 22 can also be referred to as wood gas.
  • the gasification device 20 comprises a pyrolysis device 24 for generating the combustible gas stream 22, in which the biomass 12 is pyrolyzed with the addition of air 26 as an oxidizing agent. The pyrolyzed biomass is further oxidized in a full flow oxidation device 28.
  • the pyrolyzed biomass then passes into a fluidized bed reactor 30, which is particularly efficient due to its shape.
  • air 32 is additionally introduced as an oxidizing agent, with the respective contaminants 34 being separated off and collected in a collecting container 36 for their disposal.
  • the carburetor device 20 is described in more detail in WO 2008/110383 A2.
  • the biomass power plant 10 can also comprise other forms of gasification devices, for example fermentative forms such as in biogas plants, which generate a combustible gas stream 22.
  • the combustible gas stream 22 generated by the gasification device 20 is then introduced into a filter device 38.
  • this filter device 38 for example, respective solid bodies are filtered out of the gas stream 22, in particular the activated carbon 18, which is collected in a collecting container 40.
  • water 42 is introduced to moisten the activated carbon 18.
  • the combustible gas stream 22 is then passed through a cooling device 44.
  • heat is extracted from the gas stream 22, which heat can be used, for example, to preheat the air stream 26 and 32 and / or to preheat and dry the biomass 12. Alternatively or additionally, the extracted heat can also be used to dry the activated carbon 18 or can be made available to the consumer with the heat 16, for example as heating energy.
  • the pyrolysis can take place, for example, at temperatures around 500.degree.
  • the fluidized bed reactor 30 can, for example, have a temperature of 850 ° C. at a hottest, lowest point.
  • the cooling device 44 can cool the gas stream 22 to a temperature of, for example, 100 ° C.
  • Respective parts of the biomass power plant 10 can comprise respective inputs and outputs, by means of which respective fluid flows can be introduced into respective rooms of the devices mentioned. The actual process of the respective device can then take place in these rooms.
  • the rooms can be essentially closed or also have partially open areas, wherein the parts of the biomass power plant 10 can have corresponding walls, in particular metal walls.
  • Respective inputs and outputs can be connected by respective lines, in particular metal pipes.
  • the fluid streams can, for example, be solid, liquid or gaseous, and fluid streams can also be provided in the process which have a mixture of different phases.
  • the gas stream 22, which is passed through the filter device 38 was cleaned and cooled by the cooling device 44, fed to a gas scrubber 46, which in the present case is designed as a condensation cooler.
  • This gas scrubber 46 is designed to separate a scrubber condensate 48 from the gas stream 22.
  • the gas scrubber 46 can be a circulating condenser, in which a washing liquid and / or the scrubber condensate 48 produced can be introduced and / or returned in a controlled manner and an excess scrubber condensate 48 can be discharged in a controlled manner.
  • the excess scrubber condensate 48 can correspond to an amount at which the amount of liquid in the gas scrubber 46 remains essentially constant, even when additional washing liquid is supplied.
  • water 74 is sprayed into a room of the gas scrubber 46, for example.
  • the gas scrubber 46 further substances are excreted from the gas stream 22, which could be disadvantageous in the event of combustion. These include, for example, substances or compounds containing ammonium.
  • the condensation cooler further cools the combustible gas stream 22, which can also be referred to as fuel gas, for example to a temperature of 25 ° C. This can further increase the efficiency of a subsequent combustion process.
  • the laundry condensate 48 is disposed of, for example, in the sewage network.
  • the now finally cleaned gas stream 22 is introduced into a combustion device 50 which is designed to burn the gas stream 22, the energy 14, 16 and an exhaust gas stream 52 being generated.
  • heat 16 is also generated.
  • the combustion device 50 can also provide mechanical energy as useful energy, for example for driving a vehicle. While electrical energy 14 and heat 16 are usable, exhaust gas stream 52 is typically released into the environment, for example. This can result in a corresponding environmental pollution, which can be restricted, for example, by respective exhaust gas regulations.
  • the efficiency of the biomass power plant 10 can be low, especially at high temperatures of the exhaust gas stream 52, since the residual heat contained in the exhaust gas stream 52 cannot be used.
  • respective environmentally harmful substances can be contained in the exhaust gas stream 52, such as nitrogen oxides and sulfur oxides, which, for example, have to be separated and disposed of in a complex manner.
  • the biomass power plant 10 according to FIG. 1 comprises one illustrated in FIG. 2 Exhaust gas aftertreatment system 54.
  • FIG. 2 also shows the filter device 38, the cooling device 44, the gas scrubber 46 and the combustion device 50 of the biomass power plant 10 from FIG. 1, while the other parts of the biomass power plant 10 are not shown for simplification.
  • the exhaust gas aftertreatment system 54 or the biomass power plant 10 comprises an exhaust gas condenser 56 for the exhaust gas treatment.
  • the exhaust gas stream 52 is introduced into this exhaust gas condenser 56, the exhaust gas condenser 56 being designed to separate an exhaust gas condensate 58 from the exhaust gas stream 52.
  • the exhaust gas condenser 56 can be a circulation condenser, in which a washing liquid and / or the exhaust gas condensate 58 generated can be introduced and / or returned in a controlled manner and an excess exhaust gas condensate 58 can be discharged in a controlled manner.
  • the excess exhaust gas condensate 58 can correspond to an amount at which the amount of liquid in the exhaust gas condenser 56 remains essentially constant, even when additional washing liquid is supplied.
  • the separation takes place with cooling of the exhaust gas stream 52, whereby it cools from a temperature of, for example, 200 ° C. when it leaves the combustion device 50 to a temperature of preferably below 40 ° C. when it leaves the exhaust gas condenser 56.
  • the cooled exhaust gas stream cleaned from the exhaust gas condensate 58 is illustrated by arrow 60.
  • This cleaned and cooled exhaust gas stream 60 is then released into the environment.
  • the respective sulfur oxides and nitrogen oxides are largely removed from the exhaust gas stream 60 and contained in the exhaust gas condensate 58, so that environmental pollution is reduced.
  • the efficiency of the biomass power plant 10 is also increased, since the exhaust gas condenser 56 can also make heat 16 usable. For example, this heat 16 of the exhaust gas condenser 56 can also be made available to a consumer or used to heat other process fluids and / or process steps.
  • the exhaust gas condensate 58 usually contains a high concentration of H 2 S0 4 and HN0 3 , which lead to an acidic exhaust gas condensate 58, for example with a pH of 1 to 3.
  • Such an exhaust gas condensate 58 is very corrosive, which is why, for example, a flushing water into the Exhaust gas condenser 56 is introduced to separate and protect respective metal parts of the exhaust gas condenser 56. This flushing water promotes the excretion and cooling of the exhaust gas stream 52 and at the same time washes it corrosively Compositions from the exhaust gas condenser 56.
  • the exhaust gas condensate 58 is environmentally harmful and, in particular, is not readily disposed of in a wastewater network according to current regulations after it has been removed from the exhaust gas condenser 56.
  • the scrubber condensate 48 which is usually slightly basic with a pH of 8 to 9.5, is mixed with the exhaust gas condensate 58 in a mixing device 62.
  • Respective ammonium-containing substance compounds of the laundry condensate 48 such as, for example, NH 4 HC0 3 , enter into new substance compounds with respective sulfate or nitrate compounds of the exhaust gas condensate 58, which can be used, for example, as fertilizers.
  • substance compounds can be, for example, (NH 4 ) 2 S0 4 and NH 4 N0 3 .
  • an essentially pH-neutral mixed condensate 64 is produced, which for example has a pH of 6.5 to 7.5.
  • the mixed condensate 64 can also be disposed of directly in a wastewater network without the need to fear further environmental pollution or a violation of environmental regulations, and / or be handled without the risk of corrosion or injury.
  • the exhaust gas aftertreatment system 54 or the biomass power plant 10 preferably also comprises a recirculation device 66, by means of which the mixed condensate 64 is mixed with the separated activated carbon 18 behind the filter device 38.
  • the mixed condensate 64 can, for example, also replace the water 42 for moistening the activated carbon 18, so that the additional use of water can be dispensed with here.
  • the activated carbon 18 can thus advantageously be enriched with plant nutrients.
  • biochar 18 can also be produced as a by-product, which can be used, for example, as a valuable soil conditioner. For better transport, this is mixed with the water 42 on site.
  • a completely ecological frictional connection can be made possible by combining the obtained condensate 64 with the biochar 18.
  • the combination of the residual material flows from the biomass gasifier concept makes it possible to generate an even higher quality product from the valuable by-product biochar 18.
  • Current research results indicate that the combined effect of plant ash or biochar 18 with a nitrogen source, such as this in the mixed condensate 64 is present leads to significantly better plant growth than the individual use of these substances. Therefore, with the exhaust gas aftertreatment system 54, energy can be generated much more sustainably with the biomass power plant 10.
  • the activated carbon 18 can be used to promote the growth of new biomass 12.
  • the exhaust gas aftertreatment system 54 can comprise a metering device 68 for the scrubber condensate 48 and a metering device 70 for the exhaust gas condensate 58.
  • the two metering devices 68, 70 can be designed to feed the scrubber condensate 48 or the exhaust gas condensate 58 to the mixing device 62 in the correct amounts.
  • Corresponding sensors and control devices can be provided for this.
  • the desired pH value and / or the desired nutrient content in the mixed condensate 64 can thereby be set.
  • the metering device 70 can be designed to supply further sulfur and / or nitrogen oxides to the mixing device 62 in addition to the sulfur and nitrogen oxides contained in the exhaust gas condensate 58.
  • all ammonium compounds in the laundry condensate 48 can be used as fertilizers.
  • this additional admixture of sulfur oxides and nitrogen oxides can also take place in the mixing device 62.
  • laundry condensate 48 can also be fed as a flushing agent to the exhaust gas condenser 56, as is also illustrated in FIG. 2.
  • a metering device 72 can also be provided for this in order to supply a desired amount of the washing condensate 48 to the exhaust gas condenser 56.
  • an exhaust gas condensate 58 can be generated immediately, in which the compounds suitable as fertilizers, which otherwise are only described as mixed condensate 64 in the Mixing device 62 are generated.
  • the exhaust gas condenser 56 is attacked less than by an acidic or acidic exhaust gas condensate 58, so that it can optionally be formed from less high-quality and corrosion-resistant materials.
  • the exhaust gas aftertreatment system 54 can be particularly cost-effective.
  • additional rinse water can be dispensed with or at least reduced, which can make the entire process particularly efficient.
  • an exhaust gas condensate 58 can thus be generated, which can at least partially have the properties of the mixed condensate 64.
  • the pH value can be more neutral and / or respective sulfur oxides and nitrogen oxides in the exhaust gas stream 52 are directly connected to ammonium compounds in the scrubbing condensate 48, in order in this way to use substance compounds which can be used as fertilizers to create.
  • the exhaust gas condensate 58 which has been eliminated as a flushing agent with the aid of the scrubber condensate 48 can also also be fed to the mixing device 62 in order to be mixed there with further parts of the scrubber condensate 48.
  • Such an exhaust gas condensate 58 can thus be neutralized further, more substances can be converted into material compounds that can be used as plant nutrients, and / or the respective components of the resulting mixed condensate 64 can be adjusted more precisely, in particular with a pH value that can be regulated more precisely than when using the laundry condensate 48 as a detergent Exhaust gas condensate 58.
  • the scrubber condensate 48 is both partly supplied to the exhaust gas condenser 56 and partly to the mixing device 62 in order to be mixed with the exhaust gas condensate 58.
  • the exhaust gas condenser 56 can be protected against corrosion, the exhaust gas condensate 58 can be produced with the positive properties described above, and a better conversion of the ammonium compounds of the scrubber condensate 48 can be achieved.
  • the efficiency of the biomass power plant 10 can be increased in this way, since additional valuable by-products are generated.
  • the cooling of the exhaust gas stream 52 also increases the energy efficiency of the biomass power plant 10.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treating Waste Gases (AREA)

Abstract

L'invention concerne une installation de bioénergie (10), en particulier une centrale de biomasse (10), la centrale de biomasse (10) étant conçue pour mélanger au moins une partie du condensat de lavage (48) avec au moins une partie du condensat de gaz d'échappement (58) pour la production d'un condensat mixte (64) et/ou l'installation de bioénergie (10) étant conçue pour introduire au moins une partie du condensat de lavage (48) dans le condensateur de gaz d'échappement (56) en tant que liquide de lavage pour l'acheminement du précipité du condensat de gaz d'échappement (58). L'invention concerne en outre un procédé pour la faire fonctionner une installation de bioénergie (10), un système de post-traitement de gaz d'échappement (54) pour une installation de bioénergie (10), un procédé pour le post-traitement de gaz d'échappement (54) d'une installation de bioénergie (10) ainsi que l'utilisation d'un condensat de lavage (48) d'une installation de bioénergie (10) pour la purification de gaz d'échappement (54).
PCT/EP2018/079869 2018-10-31 2018-10-31 Installation de bioénergie WO2020088757A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18795648.7A EP3874011A1 (fr) 2018-10-31 2018-10-31 Installation de bioénergie
PCT/EP2018/079869 WO2020088757A1 (fr) 2018-10-31 2018-10-31 Installation de bioénergie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2018/079869 WO2020088757A1 (fr) 2018-10-31 2018-10-31 Installation de bioénergie

Publications (1)

Publication Number Publication Date
WO2020088757A1 true WO2020088757A1 (fr) 2020-05-07

Family

ID=64049270

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/079869 WO2020088757A1 (fr) 2018-10-31 2018-10-31 Installation de bioénergie

Country Status (2)

Country Link
EP (1) EP3874011A1 (fr)
WO (1) WO2020088757A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111470885A (zh) * 2020-05-18 2020-07-31 磐安县百春生物能源有限公司 一种草木灰烧制设备及其烧制方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3509782C2 (fr) 1985-03-19 1988-05-11 Sep Gesellschaft Fuer Technische Studien, Entwicklung, Planung Mbh, 8000 Muenchen, De
DE3941431A1 (de) 1989-12-15 1991-06-20 Meyer Fa Rud Otto Verfahren und anlage zur deponiegas- und sickerwasserentsorgung
DE3924723C2 (de) 1988-08-15 1994-02-10 Reinhard Dipl Ing Eckert Energieumwandlungseinrichtung mit einer Wirbelkammerfeuerung
US20070204620A1 (en) * 2004-04-16 2007-09-06 Pronske Keith L Zero emissions closed rankine cycle power system
WO2008110383A2 (fr) 2007-03-15 2008-09-18 Mci Management Center Innsbruck Internationale Fachhochschulgesellschaft Mbh Gazéificateur
US20120304540A1 (en) * 2009-11-06 2012-12-06 Meva Innovation Ab System and process for gasifying biomass

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3509782C2 (fr) 1985-03-19 1988-05-11 Sep Gesellschaft Fuer Technische Studien, Entwicklung, Planung Mbh, 8000 Muenchen, De
DE3924723C2 (de) 1988-08-15 1994-02-10 Reinhard Dipl Ing Eckert Energieumwandlungseinrichtung mit einer Wirbelkammerfeuerung
DE3941431A1 (de) 1989-12-15 1991-06-20 Meyer Fa Rud Otto Verfahren und anlage zur deponiegas- und sickerwasserentsorgung
US20070204620A1 (en) * 2004-04-16 2007-09-06 Pronske Keith L Zero emissions closed rankine cycle power system
WO2008110383A2 (fr) 2007-03-15 2008-09-18 Mci Management Center Innsbruck Internationale Fachhochschulgesellschaft Mbh Gazéificateur
US20120304540A1 (en) * 2009-11-06 2012-12-06 Meva Innovation Ab System and process for gasifying biomass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111470885A (zh) * 2020-05-18 2020-07-31 磐安县百春生物能源有限公司 一种草木灰烧制设备及其烧制方法
CN111470885B (zh) * 2020-05-18 2024-06-11 磐安县百春生物能源有限公司 一种草木灰烧制设备及其烧制方法

Also Published As

Publication number Publication date
EP3874011A1 (fr) 2021-09-08

Similar Documents

Publication Publication Date Title
DE69919320T2 (de) Quecksilberentfernung in Nasswäscher mit Chelatbildner
EP0819233B1 (fr) Procede et dispositif de traitement thermique de dechets
EP0436822B2 (fr) Procédé pour la purification des gaz d'échappement des installations pour la production de clinker
CH676089A5 (fr)
EP0123856B1 (fr) Procédé d'élimination ou d'isolation de polluants de gaz d'échappement
DD253607A5 (de) Verfahren zur entsorgung von klaerschlamm aus einer biologischen abwasserreinigungsanlage
DE112011100511B4 (de) Abluftreinigungsverfahren und -system zur Elimination insbesondere von Formaldehyd aus einem entsprechend belasteten Abgasstrom einer Biogas-Verbrennungseinrichtung
WO2020088757A1 (fr) Installation de bioénergie
DE4404284A1 (de) Anordnung und Verfahren zur umweltverträglichen Rauchgasreinigung
DE3601917A1 (de) Verfahren fuer die reinigung von rauchgasen
WO2003033623A1 (fr) Procede pour produire du courant a partir d'un materiau carbone
DE60320675T2 (de) Verfahren zur güllebehandlung
EP3275845B1 (fr) Procédé de combustion de boue d'épuration
WO2009129762A1 (fr) Procédé et dispositif de réduction de micropoussières dans les gaz d'échappement lors de la gazéification thermique de biomasse de type chaume ou fragmentaire
EP0376971B1 (fr) Procede et installation de recuperation par pyrolyse de gaz reutilisables contenus dans des dechets
WO2001079123A1 (fr) Procede de conditionnement de substances solides biogenes
DE4209166A1 (de) Verfahren und einrichtung zur katalytischen entfernung von schadstoffen aus rauchgas
DE2916261C2 (de) Verfahren zur Verwertung von Schlamm
DE4036348C1 (en) Waste water treatment with improved efficiency - by mechanically cleaning and biologically treating before absorbing residual particles using e.g. active carbon
DE60222629T2 (de) Verfahren zur verwendung von organischen materialien bei der energieerzeugung und erzeugung von wiederverwendbaren produkten
EP2340885A1 (fr) Procédé et installation de nettoyage de gaz de fumée
DD275725A1 (de) Verfahren und anlage zur rauchgasentschwefelung
DE19601713A1 (de) Verfahren zur Erzeugung von Inertgas aus einer Entschwefelung/Schwefelgewinnung nach einer Vergasung von festen Brennstoffen
DE4119630A1 (de) Verfahren zur umwandlung von im rauchgas einer verbrennungsanlage enthaltenen schadstoffen
AT522258A1 (de) Verfahren zur Rückgewinnung zumindest eines in einer Biomasse enthaltenen Wertstoffes

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18795648

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018795648

Country of ref document: EP

Effective date: 20210531