WO1993021287A1 - Procede de transformation des boues residuaires en combustible ou en materiau traitant pour sol - Google Patents

Procede de transformation des boues residuaires en combustible ou en materiau traitant pour sol Download PDF

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Publication number
WO1993021287A1
WO1993021287A1 PCT/US1993/003455 US9303455W WO9321287A1 WO 1993021287 A1 WO1993021287 A1 WO 1993021287A1 US 9303455 W US9303455 W US 9303455W WO 9321287 A1 WO9321287 A1 WO 9321287A1
Authority
WO
WIPO (PCT)
Prior art keywords
sludge
blocks
comminuted material
weight
mixture
Prior art date
Application number
PCT/US1993/003455
Other languages
English (en)
Inventor
Reiner Kruse
Original Assignee
Sjoberg Partners, Inc.
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 Sjoberg Partners, Inc. filed Critical Sjoberg Partners, Inc.
Publication of WO1993021287A1 publication Critical patent/WO1993021287A1/fr

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Classifications

    • 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
    • C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
    • 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
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

Definitions

  • This invention relates to a process for converting sludge into a combustible solid material which can be used as a fuel or a soil conditioner.
  • wastewater or sewage was disposed by whatever techniques municipalities deemed cost effective or convenient, such as discharging untreated sewage into rivers, streams, or lakes.
  • the Clean Air Act of 1972 mandated minimum standards for municipal wastewater treatment.
  • the mandated treatment of wastewater created a situation where almost all municipalities have constructed wastewater treatment plants.
  • the treatment plants generate a sludge which may consist of the material filtered from the wastewater, activated sludge that contains microbic elements from the biological treatment process, and heavy metals from chemical precipitation.
  • U.S. Patent Nos. 4,185,680 and 5,009,672 describe systems which generate a residual sludge which, after processing, gives off a combustible gas. The residual sludge is then compacted to a briquette or cake which is dried and used for manufacturing other products or burnable as a fuel. An alternative use for the dried sludge is as a soil conditioner.
  • U.S. Patent Nos. 4,405,332, 4,762,527, and 4,828,577 disclose mixing sludge with an additional combustible component to increase the overall heat content per unit volume. The intent is to provide a comminuted fuel which can be burned to dispose of the unwanted sludge.
  • U.S. Patent Nos. 4,043,764, 4,420,320, and 4,552,566 disclose a briquetting procedure for the solid waste or sludge, with or without a calorie enhancing additive to the potential fuel.
  • the burning the sludge to generate heat introduces technical problems such as insuring that the material to be burned does not interfere with the normal operation of the smoke stack and insuring that discharge and ash remaining from the combustion do not create environmental problems of a greater magnitude than the sludge itself. Further, the sludge of concern has a relatively low heat value upon combustion. Accordingly, most combustion schemes suggest combustion of sludge with oil, coal or the like to generate heat in commercial volumes.
  • the present invention provides a solution to the two major problems municipalities now face, namely, the disposal of wastewater treatment sludges and the disposal of paper or paper like materials.
  • the sludge and paper components are combined in a specified manner and formed into blocks so as to cause anaerobic fermentation and evolve heat sufficiently to achieve the desired degree of dewatering of the blocks, with no external fuel being required.
  • a stable, environmentally safe product is the result which can be used as a fuel, soil conditioner or other applications meeting the goals of full re-use of materials which municipalities now dispose.
  • the proportions of ingredients directed into the premixer are not critical and may be varied depending upon the solids content of the sludge and the type of solid material, but the proportions are generally in the range of about 2/3 sludge and about 1/3 solid combustible comminuted material.
  • the solids content of the mixture is adjusted to about 25-35% solids.
  • a second or primary mixer which comprises, preferably, a multi-shaft screw mixer where the fully wet mixture is mixed for a second time until a substantially uniform consistency is achieved.
  • the apparatus used in the system provides a continuous process from the introduction of sludge into the system to the storage of the processed material.
  • a homogenous mixture exits the primary mixer ready to be formed into block sized units for storage.
  • the sludge-comminuted material mixture is discharged in a stream from the primary mixer onto a conveyor belt which delivers it to a press.
  • the press may squeeze some moisture out of the mass and forms said flowing mass into a series of blocks of sufficiently rigid condition as to allow stacking on a pallet.
  • the blocks are preferably formed having dimensions of about 20 x 20 x 40 centimeters and are stacked four high on pallets in a stack of about 80 x 80 x 80 centimeters. Individual blocks are spaced apart to allow exposure to air on essentially all sides of the formed block.
  • the pallet of stacked blocks is transported to a covered location for storage. It is intended that the loaded pallets be retained in storage for a period from 4 to 8 weeks, out of direct
  • the block is then ready for subsequent use which may be in comminuted condition and recycled as a part of the sludge feedstock, in unitary or comminuted condition as a fuel to generate heat, in comminuted condition as a soil conditioner or comminuted and pelletized to serve as a cat litter.
  • the sludge is a sludge which has been treated to remove heavy metals.
  • the drawing is a diagrammatic view of the procedural steps of this invention.
  • the present invention utilizes a technical phenomenon which is quite different from the conventional approaches.
  • the present invention is based on the surprising discovery that, under certain conditions, thermal energy evolved from anaerobic fermentation of sludge can be sustained at a level which is sufficiently intense to be effectively used as the primary energy source for the reduction of the water content of the sludge. More specifically.
  • the microorganisms present in the interior of the blocks ferment the sludge anaerobically with the simultaneous evolution of heat. It is a feature of the invention that the blocks are sufficiently large to effectively exclude air and at the same time retain heat to the point that the temperature in the blocks rises to about 60 * - 70" C (i.e., the heat is not efficiently radiated by the large blocks) . As fermentation raises the core temperature in the blocks, the fermentation tends to become more efficient since the microorganisms tend to be thermophilic.
  • anaerobic digestion of organic sludges generates heat.
  • the organisms which work to decompose the organic materials operate in temperature, pH, and nutrient concentration ranges which are well known in the industry and need not be discussed here.
  • the present invention is concerned with the problem that in sludge resulting from waste water treatment and the like, water must be driven off to achieve a desired dry residue. While the conventional approaches have involved energy intensive application of mechanical dewatering techniques or application of external thermal energy, the present invention
  • sludge is mixed with a combustible comminuted material, preferably in a first mixing machine for achieving a wetting of the solid combustible comminuted material and in a second mixing machine for achieving a homogenous mixture preferably having a solids content of about 30% or less.
  • This mixture is delivered to a press.
  • the homogenous mixture is compressed into solid blocks and stored to allow natural fermentation to take place, generating heat and volatile gases which escape with water vapor to reduce the weight of the block to about 60-70% of its original stored weight.
  • the block of material having the reduced water content is higher in caloric value and suitable for use as a fuel, a soil conditioner, kitty litter or as a feedstock to be combined with sludge entering the system.
  • a source 10 of sludge is provided to a premixer 14, preferably in the proportion of about two parts sludge to one part comminuted material, by weight.
  • the sludge may be of essentially any source including, but not limited to, waste from municipal sewage treatment plants, breweries, paperwood pulp factories, and mixtures thereof. Sludge may be obtained from a municipal sewage treatment plant. Sewage is generally referred to as "raw sewage,” which is fed into a
  • the present invention is mainly concerned with the "digested" form rather than "raw” sewage form.
  • Solids conventionally comprise from about 2-
  • the sludge is delivered to a premixer 14 and mixed with some fibrous solid comminuted material
  • the solid combustible material may be shredded straw, shredded waste paper, comminuted lumber waste materials including bark, sawdust, wood chips, wood bark or the like having a fibrous structure and suitable for burning without damage to the environment.
  • the addition of fibrous material has the added benefit of raising the calorific value up to about 1,800 K cal/kg.
  • a preferred premixer 14 as shown in the illustrative embodiment is known as a conventional agricultural muck spreader.
  • premixer The function of the premixer is to churn the sludge with the dry fibrous material to make sure the dry fibers are wet. Wet fibers do not clump up and as a result the downstream pumping system does not jam.
  • the pumping system tended to operate satisfactorily even where the solids contents of sludges rose above 30%.
  • a churning premixer wet the feedstock to a degree that allowed its delivery to a second mixer without problems even though the discharge from the premixer was not homogenous.
  • the primary mixer moves the mass along its length in tumbling-turning fashion to and delivers a wet homogenous mass to a discharge pump.
  • the mixture is wetted in churning premixer 14 and the mixture is discharged by gravity either directly into one end of an elongated primary mixer, or onto a conveyor belt and transported by the conveyor belt to an elongated primary mixer 18.
  • the mixture is agitated, preferably by a twin shaft paddle mixer, to a uniform consistency and then delivered by a pump 20 to a press 22.
  • the press compresses the mixed material into blocks of about
  • the seeding is preferably done in the second mixer 18.
  • the combination of (1) a premixer 14, (2) a primary mixer 18 and (3) the proper moisture and solids ratio of the sludge-comminuted material mixture overcomes the problem of pump 20 which tends to clog up without the specified two mixing steps and the proper solids content of the mixture.
  • the moisture content of the blocks exiting press 22 is about 40- 60% by weight and more preferably not substantially greater than about 50% by weight.
  • the blocks are stacked on pallets about four blocks high and about four blocks wide with spaces between the blocks to allow air circulation around all sides. The spacing facilitates the dissipation of evolving gases and water vapor.
  • the pallet 26 is easily conveyed by a forklift to a storage site 28 which may be completely enclosed or at least shaded from above to keep the stored blocks of material out of direct contact with rain, hail, snow and the like.
  • the blocks are stored for several days, preferably 4 to 8 weeks, and anaerobic fermentation of the materials takes place causing the temperature in the blocks to rise to about 60" - 70" C.
  • Carbon dioxide, methane, and other gases are generated 30 due to the digestion process and the heat generated tends to vaporize some of the residual water in the block.
  • the generated gases and water vapor are allowed to escape to the atmosphere and constitute up to 30% to 40% by weight of the block as originally stored. Over time the digestion process slows and temperature drops.
  • the residual moisture content after the digestion period is about 20 - 25% at the time the stored blocks return to essentially ambient temperature. At this time the blocks are in condition for subsequent processing or use as needed.
  • One use is as a fuel block 32 which may be delivered directly to a furnace or burner 34. After burning, the ash or residual material is
  • the blocks may be delivered to a comminuter 36 which shreds, hammers or otherwise breaks the dried block to particulate matter of a suitable size for whatever condition is desired.
  • Line 38 supplies comminuted material to the premixer for adjusting the solids content of the sludge.
  • Another use for the comminuted block is to deliver it in suitable size and condition as a soil conditioner 40.
  • the size of particles delivered from comminuter 36 may or may not be the same as in recycling line 38.
  • lime, fertilizer and/or other suitable agents are added to the comminuted block material for use as a soil conditioner for various reasons which are well known in the industry.
  • Comminuting the partially digested block and moving the particles to a holding location prior to use as a soil conditioner results in a second composting where the comminuted materials again produce heat from exothermic chemical reactions and the mass rises in temperature to about 60 * C and slowly returns to ambient temperature (about 4 weeks).
  • the material may be pelletized and packaged for sale as cat litter.
  • the comminuted material from comminuter 36 may be used as a fuel 42 fed to furnace 34 either alone or in combination with blocks of fuel 32.
  • the furnace or burner 34 is intended to generate heat 44 for conventional purposes and a smoke stack (not shown) may be used to exhaust smoke and other gases from the furnace. Sludge blocks or
  • the residue of ash 46 may be disposed of in conventional fashion.
  • the ash deposited in the furnace and discharged 46 is of a fluffy, nonvitrified, consistency allowing the discharge facility to operate on a continuous basis. Applicant theorizes that the satisfactory burning and lack of slag may be attributabe to the employment of two mixing units which provide a more homogenous product for burning, so that clumps of unburned material do not remain.
  • One purpose of this process is to evaporate water from the digested sludge without the use of outside energy. Accordingly, where there is a risk of rain, it is necessary to store the blocks in a covered area during the digestion phase to prevent a re- deposit of water. A roof is required and sidewalls are desirable but sheets of plastic may be used to screen the blocks from the environment.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Mechanical Engineering (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Treatment Of Sludge (AREA)

Abstract

On fait d'abord passer une source de boues résiduaires (10) dont la teneur en matières solides (38) est ajustée dans un dispositif d'ajustage (12), dans un pré-mélangeur (14) dans lequel un matériau broyé (16) est rajouté. Ce mélange passe ensuite dans un mélangeur primaire (18), est envoyé par une pompe (20) dans une presse (22) d'où l'eau est expulsée, pour être ensuite comprimé de manière à former des blocs qui sont mis sur palettes (26) et rangés dans une zone de stockage (28) où les gaz sont expulsés. Les blocs (32) en provenance de la zone de stockage sont directement utilisés ou sont broyés dans un broyeur (36). Une partie du matériau broyé est utilisée comme combustible dans un brûleur (34) afin de produire de la chaleur (44) et un résidu de combustion (46). Le reste du matériau broyé en provenance du broyeur (36) est utilisé comme matériau traitant pour sol ou autre (40), ou est renvoyé dans le dispositif d'ajustage (12) en tant que matière solide (38).
PCT/US1993/003455 1992-04-13 1993-04-13 Procede de transformation des boues residuaires en combustible ou en materiau traitant pour sol WO1993021287A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US86741892A 1992-04-13 1992-04-13
US07/867,418 1992-04-13
US95028592A 1992-09-24 1992-09-24
US07/950,285 1992-09-24

Publications (1)

Publication Number Publication Date
WO1993021287A1 true WO1993021287A1 (fr) 1993-10-28

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AU (1) AU3977693A (fr)
WO (1) WO1993021287A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2086262A1 (es) * 1994-07-07 1996-06-16 Areizaga Iglesias Adolfo De Proceso de gasificacion de residuos de biomasa.
WO2003087275A1 (fr) * 2002-04-17 2003-10-23 Entwicklung Und Herstellung Von Produkten Aus Nachwachsenden Rohstoffen Mit Mikroorganismen Technologie Kleedorfer Vidensky Oeg Combustible sous forme de produit comprime constitue de matiere vegetale et procede pour produire un combustible de ce type
CN103787559A (zh) * 2013-08-27 2014-05-14 上海新纯新能源科技有限公司 一种资源化处置污泥的方法
CN106753667A (zh) * 2016-12-02 2017-05-31 天津丰茂科技有限公司 一种节能环保的生物质燃料及其制备方法
CN108424806A (zh) * 2018-03-26 2018-08-21 韩勇豪 市政污泥燃料化方法及其应用

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2861877A (en) * 1954-07-22 1958-11-25 Modoc Peat Moss Company Treatment of sewage sludge
US3910775A (en) * 1974-02-22 1975-10-07 Fox John M Method and apparatus for processing refuse, sewage and/or waste material into a source of energy
US4049391A (en) * 1974-04-01 1977-09-20 Black Clawson Fibreclaim, Inc. Process for refuse disposal and heat recovery therefrom
US4152119A (en) * 1977-08-01 1979-05-01 Dynecology Incorporated Briquette comprising caking coal and municipal solid waste
US4185680A (en) * 1976-01-28 1980-01-29 Victor Lawson Process for producing useful concentrated slurries from waste material
US4316961A (en) * 1980-06-09 1982-02-23 United Gas Pipe Line Company Methane production by anaerobic digestion of plant material and organic waste
US4405332A (en) * 1981-07-28 1983-09-20 Rodriguez Larry A Alternative fuel comprised of sewage sludge and a particulate solid fuel
US4420320A (en) * 1979-09-27 1983-12-13 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Method of biologically drying waste material
US4552666A (en) * 1982-11-26 1985-11-12 Mueller Dietrich Process for the treatment of sewage sludge

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2861877A (en) * 1954-07-22 1958-11-25 Modoc Peat Moss Company Treatment of sewage sludge
US3910775A (en) * 1974-02-22 1975-10-07 Fox John M Method and apparatus for processing refuse, sewage and/or waste material into a source of energy
US4049391A (en) * 1974-04-01 1977-09-20 Black Clawson Fibreclaim, Inc. Process for refuse disposal and heat recovery therefrom
US4185680A (en) * 1976-01-28 1980-01-29 Victor Lawson Process for producing useful concentrated slurries from waste material
US4152119A (en) * 1977-08-01 1979-05-01 Dynecology Incorporated Briquette comprising caking coal and municipal solid waste
US4420320A (en) * 1979-09-27 1983-12-13 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Method of biologically drying waste material
US4316961A (en) * 1980-06-09 1982-02-23 United Gas Pipe Line Company Methane production by anaerobic digestion of plant material and organic waste
US4405332A (en) * 1981-07-28 1983-09-20 Rodriguez Larry A Alternative fuel comprised of sewage sludge and a particulate solid fuel
US4552666A (en) * 1982-11-26 1985-11-12 Mueller Dietrich Process for the treatment of sewage sludge

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2086262A1 (es) * 1994-07-07 1996-06-16 Areizaga Iglesias Adolfo De Proceso de gasificacion de residuos de biomasa.
WO2003087275A1 (fr) * 2002-04-17 2003-10-23 Entwicklung Und Herstellung Von Produkten Aus Nachwachsenden Rohstoffen Mit Mikroorganismen Technologie Kleedorfer Vidensky Oeg Combustible sous forme de produit comprime constitue de matiere vegetale et procede pour produire un combustible de ce type
CN103787559A (zh) * 2013-08-27 2014-05-14 上海新纯新能源科技有限公司 一种资源化处置污泥的方法
CN106753667A (zh) * 2016-12-02 2017-05-31 天津丰茂科技有限公司 一种节能环保的生物质燃料及其制备方法
CN108424806A (zh) * 2018-03-26 2018-08-21 韩勇豪 市政污泥燃料化方法及其应用
WO2019184078A1 (fr) * 2018-03-26 2019-10-03 韩勇豪 Procédé de préparation de combustible à partir de boues municipales et son application

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Publication number Publication date
AU3977693A (en) 1993-11-18

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