EP4105302A1 - Method and system for combined drying of biomass and capture of carbon dioxide - Google Patents
Method and system for combined drying of biomass and capture of carbon dioxide Download PDFInfo
- Publication number
- EP4105302A1 EP4105302A1 EP22179147.8A EP22179147A EP4105302A1 EP 4105302 A1 EP4105302 A1 EP 4105302A1 EP 22179147 A EP22179147 A EP 22179147A EP 4105302 A1 EP4105302 A1 EP 4105302A1
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- EP
- European Patent Office
- Prior art keywords
- biomass
- dryer
- stream
- thermal
- capture module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002028 Biomass Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000001035 drying Methods 0.000 title claims abstract description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title 2
- 229910002092 carbon dioxide Inorganic materials 0.000 title 1
- 239000001569 carbon dioxide Substances 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000000567 combustion gas Substances 0.000 claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 238000001704 evaporation Methods 0.000 claims abstract description 6
- 230000008020 evaporation Effects 0.000 claims abstract description 6
- 239000000446 fuel Substances 0.000 claims abstract description 6
- 239000002023 wood Substances 0.000 claims description 16
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 239000008188 pellet Substances 0.000 description 6
- 230000010354 integration Effects 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000013138 pruning Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- YGYGASJNJTYNOL-CQSZACIVSA-N 3-[(4r)-2,2-dimethyl-1,1-dioxothian-4-yl]-5-(4-fluorophenyl)-1h-indole-7-carboxamide Chemical compound C1CS(=O)(=O)C(C)(C)C[C@@H]1C1=CNC2=C(C(N)=O)C=C(C=3C=CC(F)=CC=3)C=C12 YGYGASJNJTYNOL-CQSZACIVSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- -1 salt amine Chemical class 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
- C10L5/442—Wood or forestry waste
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/34—Other details of the shaped fuels, e.g. briquettes
- C10L5/36—Shape
- C10L5/363—Pellets or granulates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/02—Combustion or pyrolysis
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/06—Heat exchange, direct or indirect
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/08—Drying or removing water
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/30—Pressing, compressing or compacting
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/541—Absorption of impurities during preparation or upgrading of a fuel
Definitions
- the invention relates to a method and system for drying biomass.
- the method and the system are suitable for drying (wet) biomass for which further processing is difficult, such as ligneous residual streams (residual wood) such as prunings, waste wood, so that these residual streams are suitable for the production of biopellets for (use in) wood pellet boilers and/or (other) installations.
- the present invention aims to provide a production process with a substantially negative CO 2 footprint ("carbon footprint”; for this concept see for example https://en.wikipedia.org/wiki/Carbon_footprint).
- Ligneous residual streams are difficult to reuse sustainably and to recycle to a usable product.
- a good option is processing of the capitaous residual streams to biopellets, which can be used as fuel for example in stoves and boilers for heating installations and the like. Compared to the use of natural gas, a substantial decrease in CO 2 emission can be achieved.
- a drawback of processing ligneous residual streams is high energy consumption, and thus high CO 2 emission and CO 2 footprint, as a result of pretreatment and drying of these residual streams.
- the residual streams are separated into usable and unusable fractions, and then the usable fractions are among other things rinsed/washed, comminuted to wood chips, sieved into fractions and then dried.
- the wood chips have a high moisture content because moist residual streams such as prunings are used and because during processing and making the residual streams suitable, rinsing and washing with water take place. Even when biomass is used as fuel for the thermal boiler of the wood chip dryer, production of biopellets from ligneous residual streams leads to undesirable extra CO 2 emission.
- the aim of the invention is therefore to provide a method and system for drying wet, capitaous residual streams, wherein extra CO 2 emission is prevented and a greater reduction in CO 2 emission is achieved compared to the use of natural gas.
- a method for drying biomass comprising the steps:
- the method according to the invention further comprises supplying a part of the energy released from the dryer in the stream of evaporated water, and/or energy released from the CO 2 capture module, to an external heating system.
- an external heating system such as district heating or heating a greenhouse, a further decrease in CO 2 emission can be obtained.
- the dried second biomass from the dryer is preferably successively cleaned, post-comminuted and pelletized to biopellets; in particular, the second biomass comprises wet wood chips. Very good results in the form of high-grade biopellets were obtained when feeding the dryer with biomass that contains wet wood chips and treating the dry wood chips prior to pressing the biopellets.
- the second biomass is rinsed and/or sieved and/or comminuted prior to the drying step. Owing to the improved heat integration, it is possible to produce high-grade biopellets by improving the second biomass qualitatively by applying among other things rinsing and washing steps, so that the second biomass comprises less contamination but acquires a higher water content thereby and will consume more energy during drying, which will not lead to an appreciable increase in CO 2 emission.
- the CO 2 capture module comprises a quenching unit, an absorption unit and a stripper unit.
- the present invention also comprises a system for drying biomass, comprising:
- the system according to the invention is preferably arranged for supplying a part of the energy released from the dryer in the stream of evaporated water, and/or energy released from the CO 2 capture module, to an external heating system.
- the system according to the invention further comprises means that are arranged so that second biomass dried by the dryer is successively cleaned, post-comminuted and pelletized to biopellets.
- units are provided prior to the dryer for rinsing and/or sieving and/or comminuting the second biomass.
- the second biomass comprises wet wood chips.
- the CO 2 capture module comprises a quenching unit, an absorption unit and a stripper unit.
- the stream of CO 2 from the capture module is liquefied in a cooling and compression unit.
- Fig. 1 shows schematically an embodiment example of a system according to the invention, in which the method can be carried out.
- Fig. 1 shows schematically an embodiment example of a system according to the invention, arranged for drying (wet) biomass and arranged for reducing CO 2 emission through improved heat integration.
- (wet) wood chips are dried as second biomass 5 and processed further and then pressed to high-grade, certified biopellets for example for wood pellet boilers/installations.
- the second biomass 5 is preferably a moist ligneous residual stream of little value such as prunings from landscape maintenance or other waste wood. There is not usually any good, alternative (re)use available for this biomass.
- the system comprises
- First biomass 2 is used as fuel for the thermal boiler 1.
- First biomass 2 may be identical to second biomass 5, but may also be another biomass fraction, of a different composition, for example a waste stream from the cleaning/washing step of the second biomass or for example waste pellets 16 from the pelletizing unit.
- thermal oil may be used as thermal medium 3, or some other suitable fluid for example such as (superheated) steam of for example 225°C at 25 bar.
- the system according to the invention shown in Fig. 1 is moreover arranged for supplying a second portion 9b (for example approx. 30%) of the stream of evaporated water 9 released from the dryer 4 or at least the energy (in the form of heat) therefrom, and/or the energy 11 released as residual product from the CO 2 capture module or at least the heat therefrom, to an external heating system 12 for example for (town) district heating 13.
- a second portion 9b for example approx. 30%
- the system according to the invention shown in Fig. 1 further comprises means that are arranged for successively cleaning and post-comminuting the dry wood chips 6, produced by the dryer 4, in unit 14 and for pelletizing them for example to pellets with a size of for example 6 mm in unit 15, obtained from the clean fraction, plus pellets with a size of for example 8 mm in unit 16, obtained from the waste fraction.
- the waste stream waste fraction
- the CO 2 capture module/system 7 works like this: The precleaned (ready to exhaust to the surroundings if not used for CO 2 capture) combustion gases 8 are led into the CO 2 capture system 7.
- the first step is to precool the flue gases; this is done in a quenching/scrubber tank. After cooling and pre-washing the flue gases are led into an absorber vessel.
- This vessel contains mass-transfer equipment facilitating the transfer of the CO 2 from the flue gas into the absorption liquid.
- the absorption liquid e.g. GALLOXOL ®
- GALLOXOL ® is an aqueous liquid which contains a salt amine which dissolved in the water can react with the CO 2 in the air via gas/liquid contact.
- the salt-amine CO 2 reaction is reversible and very selective towards CO 2 .
- the mixture content is guaranteed as a risk free and mineral based mixture with no harmful components.
- the CO 2 rich absorption liquid flows into the regenerator/stripper.
- the mixture is heated with waste heat in the flow of evaporated water 9 from the dryer 4.
- the heating of the mixture releases the CO 2 as a CO 2 /water vapor mixture.
- the CO 2 /water vapor mixture is cooled and condensed free water removed.
- the heat produced from the cooling process is reused in the process or used for another heat demanding process.
- the pure still slightly wet CO 2 is then dried and further purified in a CO 2 dryer unit up to high technical quality.
- the CO 2 gas 10 undergoes a cleaning process to ensure food grade quality by compressing and cooling in a liquefying unit 19 and stored to make the liquid CO 2 20 portable in trucks.
- the electrical energy required for carrying out the method according to the invention obviously preferably consists of sustainably generated “green power”, but a negative CO 2 footprint is also obtained with “grey power”.
- the present invention provides a production process with a substantially negative CO 2 footprint, which can be confirmed by research that has been carried out and published:
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ecology (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
Description
- The invention relates to a method and system for drying biomass. The method and the system are suitable for drying (wet) biomass for which further processing is difficult, such as ligneous residual streams (residual wood) such as prunings, waste wood, so that these residual streams are suitable for the production of biopellets for (use in) wood pellet boilers and/or (other) installations.
- The present invention aims to provide a production process with a substantially negative CO2 footprint ("carbon footprint"; for this concept see for example https://en.wikipedia.org/wiki/Carbon_footprint).
- Ligneous residual streams are difficult to reuse sustainably and to recycle to a usable product. A good option is processing of the ligneous residual streams to biopellets, which can be used as fuel for example in stoves and boilers for heating installations and the like. Compared to the use of natural gas, a substantial decrease in CO2 emission can be achieved. A drawback of processing ligneous residual streams is high energy consumption, and thus high CO2 emission and CO2 footprint, as a result of pretreatment and drying of these residual streams. In order to make these residual streams suitable for pressing of biopellets, among other things the residual streams are separated into usable and unusable fractions, and then the usable fractions are among other things rinsed/washed, comminuted to wood chips, sieved into fractions and then dried. The wood chips have a high moisture content because moist residual streams such as prunings are used and because during processing and making the residual streams suitable, rinsing and washing with water take place. Even when biomass is used as fuel for the thermal boiler of the wood chip dryer, production of biopellets from ligneous residual streams leads to undesirable extra CO2 emission.
- The aim of the invention is therefore to provide a method and system for drying wet, ligneous residual streams, wherein extra CO2 emission is prevented and a greater reduction in CO2 emission is achieved compared to the use of natural gas.
- For this purpose, according to the invention a method is provided for drying biomass,
said method comprising the steps: - supplying a first biomass as fuel to a thermal boiler, which is arranged for heating a thermal medium by combustion of the first biomass supplied;
- drying a second biomass in a dryer by evaporation of water from the second biomass, wherein the dryer is heated by the heated thermal medium from the thermal boiler, wherein the cooled thermal medium is returned to the thermal boiler;
- supplying combustion gases, coming from the thermal boiler, to a CO2 capture module, configured to capture the CO2 in the combustion gases and to form a CO2 stream by means of energy released from the dryer in the stream of evaporated water obtained from the second biomass.
- By using the energy in the stream of evaporated water obtained from the second biomass in the CO2 capture module, a considerable decrease in CO2 emission is achieved and improved heat integration is obtained for the method for drying biomass.
- Preferably, the method according to the invention further comprises supplying a part of the energy released from the dryer in the stream of evaporated water, and/or energy released from the CO2 capture module, to an external heating system. By further heat integration with (external) heating systems such as district heating or heating a greenhouse, a further decrease in CO2 emission can be obtained.
- The dried second biomass from the dryer is preferably successively cleaned, post-comminuted and pelletized to biopellets; in particular, the second biomass comprises wet wood chips. Very good results in the form of high-grade biopellets were obtained when feeding the dryer with biomass that contains wet wood chips and treating the dry wood chips prior to pressing the biopellets.
- The second biomass is rinsed and/or sieved and/or comminuted prior to the drying step. Owing to the improved heat integration, it is possible to produce high-grade biopellets by improving the second biomass qualitatively by applying among other things rinsing and washing steps, so that the second biomass comprises less contamination but acquires a higher water content thereby and will consume more energy during drying, which will not lead to an appreciable increase in CO2 emission.
- In a preferred embodiment, the CO2 capture module comprises a quenching unit, an absorption unit and a stripper unit. As a result, good heat integration can be obtained with the drying process because the energy in the stream of evaporated water can be used in for example the stripper unit.
- Besides the method presented above, the present invention also comprises a system for drying biomass, comprising:
- a thermal boiler, which is arranged for heating a thermal medium by combustion of first biomass that is supplied;
- a dryer, which is heated by the heated thermal medium from the thermal boiler, wherein the cooled thermal medium is returned to the thermal boiler, wherein the second biomass is dried in the dryer by evaporation of water from the second biomass to a stream of evaporated water;
- a CO2 capture module that is arranged to capture the CO2 in the combustion gases from the thermal boiler and form a stream of CO2 by means of energy released from the dryer in the stream of evaporated water obtained from the second biomass.
- The system according to the invention is preferably arranged for supplying a part of the energy released from the dryer in the stream of evaporated water, and/or energy released from the CO2 capture module, to an external heating system.
- The system according to the invention further comprises means that are arranged so that second biomass dried by the dryer is successively cleaned, post-comminuted and pelletized to biopellets.
- Preferably, units are provided prior to the dryer for rinsing and/or sieving and/or comminuting the second biomass.
- In particular, the second biomass comprises wet wood chips.
- In an advantageous embodiment, the CO2 capture module comprises a quenching unit, an absorption unit and a stripper unit.
- In a practical embodiment, the stream of CO2 from the capture module is liquefied in a cooling and compression unit.
- The advantages of the system for drying biomass tally with the advantages of the method for drying biomass.
- The invention will now be discussed further on the basis of the following description of the figure.
-
Fig. 1 shows schematically an embodiment example of a system according to the invention, in which the method can be carried out. -
Fig. 1 shows schematically an embodiment example of a system according to the invention, arranged for drying (wet) biomass and arranged for reducing CO2 emission through improved heat integration. In the embodiment example, (wet) wood chips are dried assecond biomass 5 and processed further and then pressed to high-grade, certified biopellets for example for wood pellet boilers/installations. Thesecond biomass 5 is preferably a moist ligneous residual stream of little value such as prunings from landscape maintenance or other waste wood. There is not usually any good, alternative (re)use available for this biomass. - The system comprises
- a
thermal boiler 1, which is arranged for heating athermal medium 3 by combustion offirst biomass 2 that is supplied; - a dryer 4, which is heated by the heated
thermal medium 3a from thethermal boiler 1, wherein the cooledthermal medium 3b is returned to thethermal boiler 1, whereinsecond biomass 5 is dried in the dryer 4 by evaporation of water from thefirst biomass 5 to a stream of evaporatedwater 9; - a CO2 capture module 7, which is arranged for capturing the CO2 in the
combustion gases 8 from thethermal boiler 1 and to form a stream ofCO 2 10 by means of energy released from the dryer in the stream of evaporatedwater 9 obtained from thesecond biomass 5. Depending on the requirements, a first portion 9a of the stream of evaporatedwater 9 can be used in the CO2 capture module 7. -
First biomass 2 is used as fuel for thethermal boiler 1.First biomass 2 may be identical tosecond biomass 5, but may also be another biomass fraction, of a different composition, for example a waste stream from the cleaning/washing step of the second biomass or forexample waste pellets 16 from the pelletizing unit. - A suitable thermal oil may be used as
thermal medium 3, or some other suitable fluid for example such as (superheated) steam of for example 225°C at 25 bar. - The system according to the invention shown in
Fig. 1 is moreover arranged for supplying a second portion 9b (for example approx. 30%) of the stream of evaporatedwater 9 released from the dryer 4 or at least the energy (in the form of heat) therefrom, and/or theenergy 11 released as residual product from the CO2 capture module or at least the heat therefrom, to anexternal heating system 12 for example for (town)district heating 13. - The system according to the invention shown in
Fig. 1 further comprises means that are arranged for successively cleaning and post-comminuting thedry wood chips 6, produced by the dryer 4, inunit 14 and for pelletizing them for example to pellets with a size of for example 6 mm inunit 15, obtained from the clean fraction, plus pellets with a size of for example 8 mm inunit 16, obtained from the waste fraction. To achieve the intended negative carbon footprint it is important that practically all material streams are used, including the waste stream (waste fraction). This relates to approx. 10-12% of the input of thedry chips 6 that are processed to 8 mm industrial pellets inunit 16. - A short English description of the operation of the CO2 capture module 7 is given below:
The CO2 capture module/system 7 works like this:
The precleaned (ready to exhaust to the surroundings if not used for CO2 capture)combustion gases 8 are led into the CO2 capture system 7. - The first step is to precool the flue gases; this is done in a quenching/scrubber tank. After cooling and pre-washing the flue gases are led into an absorber vessel. This vessel contains mass-transfer equipment facilitating the transfer of the CO2 from the flue gas into the absorption liquid. The absorption liquid (e.g. GALLOXOL®) is an aqueous liquid which contains a salt amine which dissolved in the water can react with the CO2 in the air via gas/liquid contact. The salt-amine CO2 reaction is reversible and very selective towards CO2.
- The mixture content is guaranteed as a risk free and mineral based mixture with no harmful components.
- After the absorption the flue gases are exhausted through the chimney without CO2.
- The CO2 rich absorption liquid flows into the regenerator/stripper. The mixture is heated with waste heat in the flow of evaporated
water 9 from the dryer 4. The heating of the mixture releases the CO2 as a CO2/water vapor mixture. - The CO2/water vapor mixture is cooled and condensed free water removed. The heat produced from the cooling process is reused in the process or used for another heat demanding process.
- The pure still slightly wet CO2 is then dried and further purified in a CO2 dryer unit up to high technical quality.
- Subsequently, the CO2 gas 10 undergoes a cleaning process to ensure food grade quality by compressing and cooling in a liquefying
unit 19 and stored to make theliquid CO 2 20 portable in trucks. - It should be noted that the electrical energy required for carrying out the method according to the invention obviously preferably consists of sustainably generated "green power", but a negative CO2 footprint is also obtained with "grey power".
- Thus, the present invention provides a production process with a substantially negative CO2 footprint, which can be confirmed by research that has been carried out and published:
- https://www.stichtingbeon.nl/houtpellets-jalo-biopellets-scoren-positief-op-duurzaamheid/ and
- https://www.stichtingbeon.nl/wp-content/uploads/2020/05/Jalo-studie-DHVHasking.pdf
Claims (14)
- Method for drying biomass, comprising the steps:- supplying a first biomass as fuel to a thermal boiler, which is arranged for heating a thermal medium by combustion of the first biomass supplied;- drying a second biomass in a dryer by evaporation of water from the second biomass, wherein the dryer is heated by the heated thermal medium from the thermal boiler, wherein the cooled thermal medium is returned to the thermal boiler;- supplying combustion gases, coming from the thermal boiler, to a CO2 capture module, configured to capture the CO2 in the combustion gases and form a stream of CO2 by means of energy released from the dryer in the stream of evaporated water obtained from the second biomass.
- Method according to Claim 1, comprising supplying a part of the energy released from the dryer in the stream of evaporated water, and/or energy released from the CO2 capture module, to an external heating system.
- Method according to Claim 1 or 2, wherein the second biomass dried by the dryer is successively cleaned and post-comminuted, and is pelletized to biopellets.
- Method according to Claims 1-3, wherein the second biomass is rinsed and/or sieved and/or comminuted before the drying step.
- Method according to Claims 1-4, wherein the second biomass contains wet wood chips.
- Method according to Claims 1-5, wherein the CO2 capture module comprises a quenching unit, an absorption unit and a stripper unit.
- Method according to Claims 1-6, wherein the stream of CO2 from the capture module is liquefied in a cooling and compression unit.
- System for drying biomass, comprising:- a thermal boiler (1), which is arranged for heating a thermal medium (3) by combustion of first biomass (2) that is supplied;- a dryer (4), which is heated by the heated thermal medium (3a) from the thermal boiler (1), wherein the cooled thermal medium (3b) is returned to the thermal boiler (1), wherein second biomass (5) is dried in the dryer (4) by evaporation of water from the second biomass (5) to a stream of evaporated water (9);- a CO2 capture module (7), which is arranged to capture the CO2 in the combustion gases (8) from the thermal boiler (1) and form a stream of CO2 (10) by means of energy released from the dryer in the stream of evaporated water (9) obtained from the second biomass (5).
- System according to Claim 8, arranged for supplying a part (9b) of the energy in the stream of evaporated water (9) released from the dryer (4), and/or energy (11) released from the CO2 capture module (7), to an external heating system (12).
- System according to Claim 8 or 9, comprising means (14,15,16) that are arranged so that second biomass (6) dried by the dryer (4) is successively cleaned, post-comminuted and pelletized to biopellets.
- System according to Claims 8-10, wherein units are provided prior to the dryer for rinsing and/or sieving and/or comminuting the second biomass (5).
- System according to Claims 8-11, wherein the second biomass (5) contains wet wood chips.
- System according to Claims 8-12, wherein the CO2 capture module comprises a quenching unit, an absorption unit and a stripper unit.
- System according to Claims 8-13, wherein a cooling and compression unit (19) is provided, which liquefies the stream of CO2 (10) from the capture module.
Applications Claiming Priority (1)
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NL1044066A NL1044066B1 (en) | 2021-06-15 | 2021-06-15 | Production of biopellets for wood pellet boilers/installations from prunings and/or comparable woody biomass |
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EP4105302A1 true EP4105302A1 (en) | 2022-12-21 |
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EP22179147.8A Pending EP4105302A1 (en) | 2021-06-15 | 2022-06-15 | Method and system for combined drying of biomass and capture of carbon dioxide |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012042099A1 (en) * | 2010-09-30 | 2012-04-05 | Pauli Tahvanainen | Drying apparatus |
WO2016118067A1 (en) * | 2015-01-23 | 2016-07-28 | Bioendev Ab | Method and system for energy efficient torrefaction of biomass |
WO2019093938A1 (en) * | 2017-11-09 | 2019-05-16 | Valmet Ab | Method and system for processing lignocellulose material |
KR20200083880A (en) * | 2018-12-31 | 2020-07-09 | 충남대학교산학협력단 | Briquette having reduced toxic gas and ash and manufacturing method thereof |
-
2021
- 2021-06-15 NL NL1044066A patent/NL1044066B1/en active
-
2022
- 2022-06-15 EP EP22179147.8A patent/EP4105302A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012042099A1 (en) * | 2010-09-30 | 2012-04-05 | Pauli Tahvanainen | Drying apparatus |
WO2016118067A1 (en) * | 2015-01-23 | 2016-07-28 | Bioendev Ab | Method and system for energy efficient torrefaction of biomass |
WO2019093938A1 (en) * | 2017-11-09 | 2019-05-16 | Valmet Ab | Method and system for processing lignocellulose material |
KR20200083880A (en) * | 2018-12-31 | 2020-07-09 | 충남대학교산학협력단 | Briquette having reduced toxic gas and ash and manufacturing method thereof |
Non-Patent Citations (1)
Title |
---|
TEN ASBROEK NICK: "Frames Renewable Energy Solutions Introduction", 1 March 2019 (2019-03-01), pages 1 - 26, XP055898134, Retrieved from the Internet <URL:https://blueterra.nl/wp-content/uploads/2019/03/Frames-CO2-capture-from-biomass-combustion.pdf> [retrieved on 20220302] * |
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