WO2014147089A1 - Procédé et installation servant à traiter une biomasse, de préférence installation servant à fabriquer du papier, des granulés ou des panneaux de matériau - Google Patents

Procédé et installation servant à traiter une biomasse, de préférence installation servant à fabriquer du papier, des granulés ou des panneaux de matériau Download PDF

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Publication number
WO2014147089A1
WO2014147089A1 PCT/EP2014/055440 EP2014055440W WO2014147089A1 WO 2014147089 A1 WO2014147089 A1 WO 2014147089A1 EP 2014055440 W EP2014055440 W EP 2014055440W WO 2014147089 A1 WO2014147089 A1 WO 2014147089A1
Authority
WO
WIPO (PCT)
Prior art keywords
biomass
exhaust air
plant
dryer
spray tower
Prior art date
Application number
PCT/EP2014/055440
Other languages
German (de)
English (en)
Inventor
Wolfgang ALLERÖDDER
Jochim BÄCKER
Original Assignee
Dieffenbacher GmbH Maschinen- und Anlagenbau
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 Dieffenbacher GmbH Maschinen- und Anlagenbau filed Critical Dieffenbacher GmbH Maschinen- und Anlagenbau
Publication of WO2014147089A1 publication Critical patent/WO2014147089A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/001—Heating arrangements using waste heat
    • F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/001—Heating arrangements using waste heat
    • F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
    • F26B23/005—Heating arrangements using waste heat recovered from dryer exhaust gases using a closed cycle heat pump system ; using a heat pipe system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/06—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
    • F28C3/08—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour with change of state, e.g. absorption, evaporation, condensation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/02—Biomass, e.g. waste vegetative matter, straw
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/04—Garbage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • Method and plant for processing biomass preferably a plant for the production of paper, pellets or material plates
  • the present invention relates to a method for processing biomass, preferably a plant for the production of paper, pellets or material plates, according to the preamble of claim 1 and a plant for processing biomass according to the preamble of claim 10.
  • Moisture would be the mixed flue gases in a direct drying no longer suitable to absorb moisture from the material.
  • these physical processes also use a wet electrostatic precipitator, in which the exhaust air of a dryer is sprayed with water and thus saturated. The saturated exhaust air is finally ionized and dust and aerosols are deposited on the electrodes, which in turn are cleaned by means of water spraying. This wastewater is regenerated and usually in turn for water spraying However, a large part of the water escapes through the saturation of the water in the exhaust air through a fireplace.
  • wet electrostatic precipitators are operated in such a way that the amount of wastewater discharged remains as low as possible.
  • the moisture content of the exhaust air is usually taken into account only if misting and rain in the immediate vicinity is to be avoided, especially in cold seasons.
  • Biomass the discharge of the exhaust air of the dryer in a chimney to the environment and the processing of the dried biomass in a part of the plant, preferably in a processing plant for the production of paper, pellets or material boards happens.
  • the present invention therefore has the technical object to provide a system and a method in which the use of fresh water over the prior art can be saved and / or in which the efficiency of the entire system can be increased by reuse of low calorific energy.
  • the solution for the method comprises that at least a partial stream of the moisture-containing exhaust air between the dryer and the fireplace sprayed in a spray tower with water and the concomitant cooling of the exhaust air, this moisture is condensed in the spray tower to form condensate and
  • Temperature control of the biomass is used in parts of the plant.
  • the exhaust air is supersaturated with moisture by the humidity of the exhaust air is enriched until the exhaust air can no longer absorb moisture. Due to the parallel cooling, the moisture and the heat contained in the air are removed via the condensate of the exhaust air and stored in the resulting wastewater. The exhaust air cools accordingly, the condensing moisture and also the exhaust air flowing through the water takes on a higher temperature.
  • Tree trunks brought into contact. When contacting takes place but usually not only a warming, but water is also absorbed by the biomass in this case, then dried out of the biomass in the dryer and transferred to the exhaust air, there again condensed out of the exhaust air in the spray tower and thus be reused. This results in a nearly closed cycle Water. In any case, it is thus achieved that the fresh water consumption of comparable processes or plants is significantly reduced and quasi-low-calorie energy can be usefully used in a meaningful way.
  • the solution for the system is that in the system between the dryer and the fireplace, a spray tower for spraying at least one moisture-containing partial flow of the exhaust air is arranged with water, which is suitable to collect the condensate resulting from the associated cooling of the exhaust and wherein means are provided in the system to supply the effluent from the condensate at least parts of the system for humidification and / or temperature control of the biomass.
  • the inventive method and the device also has advantages in a possible connection of a wet electrostatic precipitator, since this almost no fresh water supply needed, since the exhaust air is saturated here already on the necessary content and it can be transferred directly to the ionization to more
  • the water can be sprayed substantially unrefined directly on tree trunks for heating, whereas the use of the wastewater, for example, in a glue liquor or as a vaporization a corresponding pre-cleaning or pH adjustment may be necessary.
  • the biomass can thus be thawed before comminution and / or before drying. This would be
  • the biomass can preferably be comminuted before and / or after drying in the dryer in a device, preferably in a hacker and / or in a mill, and, if necessary, moistened beforehand and / or after and / or tempered. This may be particularly useful when using biomass
  • Cleaning device to be cleaned, preferably by means of a wet electrostatic precipitator and / or a regenerative thermal afterburning.
  • a partial flow of hot exhaust air can be branched off before the spray tower or fed from another source and mixed after the spray tower with the cooler exhaust air from the spray tower.
  • Such is the temperature of the exhaust air and thus the absorption capacity of the exhaust air is increased again, which reduces the relative humidity within the exhaust air and helps prevent the formation of steam outside the fireplace with appropriate cooling to the ambient air.
  • wastewater can also be provided for the wastewater to heat at least parts of the plant or indirectly for feeding into a district heating system
  • the spray tower for the use of the waste water for humidification and / or temperature control of the biomass with the dryer upstream equipment parts is operatively connected by means of lines.
  • Lines are in the context of the invention suitable pipelines with corresponding drive means (pumps), which are suitable, the necessary fluids (water, sewage,
  • Crushing device preferably a hacker and / or a mill comprises.
  • a cleaning device preferably a
  • Be arranged spray tower which are operatively connected to the lines of cooler exhaust air from the spray tower to the mixture.
  • means for using the waste water for heating at least parts of the plant or for indirect feed can be arranged in a district heating system.
  • the process and the plant can be operated independently of each other; but the system may also be suitable in particular for carrying out the method.
  • Figure 1 is a schematic representation of a plant according to the prior art
  • Figure 2 is a simplified schematic representation of an inventive
  • FIG. 3 shows a more extensive illustration according to FIG. 2.
  • Figure 1 shows a schematic representation of a plant 1 according to the prior art for processing biomass to an unspecified
  • This end product may preferably be paper, pellets, in particular for combustion in hearths or even a material plate.
  • a plant 1 for the production of material plates is shown, in which a storage space 17 for storage of logs 7 (as biomass B) and in
  • a tempering 4 is arranged.
  • the tempering device 4 preferably by means of a water bath and / or a sprinkler 9, the tree trunks 7 tempered, so preferably warmed up or even thawed.
  • an energy system 1 1 is normally provided which supplies the water bath and / or a water cycle for the sprinkler 9 with heat energy via a thermal oil supply 20 and a suitable heat exchanger 10.
  • the water cycle has an inlet for fresh water FW, which substitutes the water leaving the circuit, which either evaporates or is taken up by the logs 7.
  • the logs 7 are then in a crushing device, registered here as a hacker 16, crushed and as wood chips 8 on a
  • Input lock 12 is fed to the dryer 13 for drying.
  • Input lock 12 respectively the dryer 13, is supplied directly by means of a burner (not shown) or indirectly via the energy system 1 1 with flue gas RG a high temperature in order to dry the chips 8.
  • a dryer 13 downstream output lock 18 the chips 8 are separated from the flue gases RG, the chips 8 as dry biomass BT in a processing plant 14, usually via a Thermalol machines 19 with the power plant 1 1 operatively connected, further processed.
  • the exhaust air A from the dryer 13, which has the moisture from the drying process from the dryer 13 is fed to a chimney 15 for transfer to the ambient air, wherein in front of the fireplace 15 is still a cleaning device 21, for example a
  • Wet electrostatic filter or the like can be arranged.
  • the treatment of the biomass is represented by two possible types (also combinatorially applicable as in FIG. 1) of tempering devices 4, after which the biomass B enters the dryer 13 and further processes it as dry biomass BT in a processing plant 14 becomes.
  • at least part of the exhaust air A is introduced from the drier 13 into a spray tower 2, in which the ascending exhaust air A is supplied with water W by means of an atomizer 3.
  • the cooling of the exhaust air A and the direct condensation produces condensate K, which can be discharged as effluent AW from the spray tower 2.
  • this wastewater AW indirectly via a heat exchanger 10 for heating the temperature control device 4, which is shown here by way of example as a water bath bottom left.
  • the wastewater AW can also be directly in a
  • Temperianssvoriques 4 are applied to the biomass B by means of a sprinkler 9.
  • the recaptured water W is cooled again supplied to the atomizer 3 of the spray tower 2. Again, the direct use of water W would be possible in a water bath.
  • the exhaust air A is after the spray tower 2, preferably in a cleaning device 21, for example a
  • the resulting from the condensate K wastewater AW can be used to support other consumers or the heating system parts or halls of the system and this is via a heat exchanger 10 for receiving the low calorific energies by suitable consumers, here the processing plant 14 or another Tempering device 4 'passed in front of the dryer 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Separation Of Particles Using Liquids (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

L'invention concerne une installation et un procédé servant à traiter une biomasse dans une installation. Ledit procédé comprend les étapes suivantes : le séchage de la biomasse (B) dans un séchoir (13) pour obtenir une biomasse séchée (BT) ; le rejet à l'air libre de l'air d'échappement (A) du séchoir (13) dans une cheminée (15) ; et le traitement de la biomasse séchée (BT) dans une partie de l'installation, de préférence dans une installation de traitement (14) servant à fabriquer du papier, des granulés ou des panneaux de matériau. L'invention vise à réduire la consommation d'eau claire nécessaire et/ou à augmenter la productivité de l'ensemble de l'installation en recyclant l'énergie à faible valeur calorifique. A cet effet, au moins un flux partiel de l'air d'échappement (A) contenant de l'humidité entre le séchoir (13) et la cheminée (15) est aspergé d'eau (W) dans une colonne de pulvérisation (2), et ladite humidité est condensée, par le refroidissement de l'air d'échappement (A) en résultant, dans la colonne de pulvérisation (2) pour être transformée en un condensat (K) ; et les eaux usées (AW) issues du condensat (K) sont utilisées dans des parties de l'installation afin d'humidifier la biomasse (B) et/ou d'en réguler la température.
PCT/EP2014/055440 2013-03-19 2014-03-18 Procédé et installation servant à traiter une biomasse, de préférence installation servant à fabriquer du papier, des granulés ou des panneaux de matériau WO2014147089A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013102795.4A DE102013102795A1 (de) 2013-03-19 2013-03-19 Verfahren und Anlage zur Verarbeitung von Biomasse, vorzugsweise eine Anlage zur Herstellung von Papier, Pellets oder Werkstoffplatten
DE102013102795.4 2013-03-19

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WO2014147089A1 true WO2014147089A1 (fr) 2014-09-25

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PCT/EP2014/055440 WO2014147089A1 (fr) 2013-03-19 2014-03-18 Procédé et installation servant à traiter une biomasse, de préférence installation servant à fabriquer du papier, des granulés ou des panneaux de matériau

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DE (1) DE102013102795A1 (fr)
WO (1) WO2014147089A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016104767U1 (de) 2016-08-30 2017-12-04 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung zur Reinigung eines Gasstromes
DE102016116171A1 (de) 2016-08-30 2018-03-01 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung und Verfahren zur Reinigung eines Gasstromes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023227245A1 (fr) * 2022-05-25 2023-11-30 Knauf Gips Kg Procédé de récupération de chaleur à partir d'un dispositif de séchage pour panneaux de construction

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385372A1 (fr) * 1989-02-27 1990-09-05 FRITZ EGGER GESELLSCHAFT m.b.H. Procédé et dispositif pour le séchage de copeaux de bois
EP0523685A1 (fr) * 1991-07-16 1993-01-20 FRITZ EGGER GESELLSCHAFT m.b.H. Procédé de récupération de chaleur des fluides courants contenant de quantités variables de chaleur perdue
AT412533B (de) * 2004-03-02 2005-04-25 Scheuch Gmbh Verfahren zur reinigung von abgasen sowie anlage hiefür

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3534260A1 (de) 1985-09-26 1987-04-02 Plonka Dohren Marianne Verfahren zum thermischen trocknen temperaturempfindlicher gueter in drehtrommeln sowie vorrichtungen zur durchfuehrung dieses verfahrens
DE4217116A1 (de) 1992-05-25 1993-12-02 Joern Dr Heinlein Verfahren zum Reinigen von Luft
ATE264732T1 (de) 2001-07-02 2004-05-15 Metso Paper Pori Oy Verfahren und vorrichtung zum auftauen von baumstämmen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385372A1 (fr) * 1989-02-27 1990-09-05 FRITZ EGGER GESELLSCHAFT m.b.H. Procédé et dispositif pour le séchage de copeaux de bois
EP0523685A1 (fr) * 1991-07-16 1993-01-20 FRITZ EGGER GESELLSCHAFT m.b.H. Procédé de récupération de chaleur des fluides courants contenant de quantités variables de chaleur perdue
AT412533B (de) * 2004-03-02 2005-04-25 Scheuch Gmbh Verfahren zur reinigung von abgasen sowie anlage hiefür

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016104767U1 (de) 2016-08-30 2017-12-04 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung zur Reinigung eines Gasstromes
DE102016116171A1 (de) 2016-08-30 2018-03-01 Dieffenbacher GmbH Maschinen- und Anlagenbau Vorrichtung und Verfahren zur Reinigung eines Gasstromes
WO2018041918A1 (fr) 2016-08-30 2018-03-08 Dieffenbacher GmbH Maschinen- und Anlagenbau Dispositif et procédé pour purifier un flux gazeux

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Publication number Publication date
DE102013102795A1 (de) 2014-09-25

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