WO2008138004A2 - Solid fuel compositions, processes for preparing solid fuel, and combustion processes - Google Patents
Solid fuel compositions, processes for preparing solid fuel, and combustion processes Download PDFInfo
- Publication number
- WO2008138004A2 WO2008138004A2 PCT/US2008/063103 US2008063103W WO2008138004A2 WO 2008138004 A2 WO2008138004 A2 WO 2008138004A2 US 2008063103 W US2008063103 W US 2008063103W WO 2008138004 A2 WO2008138004 A2 WO 2008138004A2
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- Prior art keywords
- solid fuel
- biomass
- wet
- pellet
- processed
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- 239000004449 solid propellant Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 26
- 239000000203 mixture Substances 0.000 title abstract description 13
- 239000002028 Biomass Substances 0.000 claims abstract description 100
- 239000008188 pellet Substances 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000005453 pelletization Methods 0.000 claims abstract description 6
- 230000000977 initiatory effect Effects 0.000 claims abstract description 3
- 239000002699 waste material Substances 0.000 claims description 27
- 235000006679 Mentha X verticillata Nutrition 0.000 claims description 19
- 235000002899 Mentha suaveolens Nutrition 0.000 claims description 19
- 235000001636 Mentha x rotundifolia Nutrition 0.000 claims description 19
- 239000000446 fuel Substances 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000010902 straw Substances 0.000 claims description 10
- 240000005979 Hordeum vulgare Species 0.000 claims description 8
- 235000007340 Hordeum vulgare Nutrition 0.000 claims description 8
- 235000010469 Glycine max Nutrition 0.000 claims description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 244000068988 Glycine max Species 0.000 claims description 5
- 235000008694 Humulus lupulus Nutrition 0.000 claims description 5
- 244000025221 Humulus lupulus Species 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000010802 sludge Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 235000021307 Triticum Nutrition 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 235000013311 vegetables Nutrition 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 239000010828 animal waste Substances 0.000 claims description 3
- 235000013399 edible fruits Nutrition 0.000 claims description 3
- 235000011187 glycerol Nutrition 0.000 claims description 3
- 239000010907 stover Substances 0.000 claims description 3
- 235000016068 Berberis vulgaris Nutrition 0.000 claims description 2
- 241000335053 Beta vulgaris Species 0.000 claims description 2
- 240000006240 Linum usitatissimum Species 0.000 claims description 2
- 235000004431 Linum usitatissimum Nutrition 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 241001520808 Panicum virgatum Species 0.000 claims description 2
- 210000003608 fece Anatomy 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000010871 livestock manure Substances 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 230000029087 digestion Effects 0.000 claims 2
- 244000098338 Triticum aestivum Species 0.000 claims 1
- 235000009754 Vitis X bourquina Nutrition 0.000 claims 1
- 235000012333 Vitis X labruscana Nutrition 0.000 claims 1
- 240000006365 Vitis vinifera Species 0.000 claims 1
- 235000014787 Vitis vinifera Nutrition 0.000 claims 1
- 238000009826 distribution Methods 0.000 claims 1
- 239000010903 husk Substances 0.000 claims 1
- 239000010801 sewage sludge Substances 0.000 claims 1
- 239000000047 product Substances 0.000 description 13
- 238000002309 gasification Methods 0.000 description 8
- 239000003921 oil Substances 0.000 description 7
- 235000019198 oils Nutrition 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 240000008042 Zea mays Species 0.000 description 5
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 5
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 5
- 235000005822 corn Nutrition 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 241000209140 Triticum Species 0.000 description 3
- 235000013405 beer Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000283690 Bos taurus Species 0.000 description 2
- 241000219094 Vitaceae Species 0.000 description 2
- 239000003225 biodiesel Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 2
- 235000021021 grapes Nutrition 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 description 2
- 239000008158 vegetable oil Substances 0.000 description 2
- 241000287828 Gallus gallus Species 0.000 description 1
- 241001647090 Ponca Species 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 239000002420 orchard Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000004460 silage Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/10—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses
-
- 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
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/70—Blending
- F23G2201/702—Blending with other waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2207/00—Control
- F23G2207/20—Waste supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/26—Biowaste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/50206—Pelletising waste before combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/50208—Biologic treatment before burning, e.g. biogas generation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/50209—Compacting waste before burning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/55—Controlling; Monitoring or measuring
- F23G2900/55006—Measuring material flow rates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/70—Incinerating particular products or waste
- F23G2900/7012—Incinerating rice or grain husks, hulls or bran
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/70—Incinerating particular products or waste
- F23G2900/70401—Incinerating drainage water from waste pits of incinerators
-
- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
-
- 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
Definitions
- compositions and processes and more particularly solid fuel compositions as well as solid fuel composition combustion processes.
- Waste materials are generated every day, if not every second, throughout the world. These waste materials stress our environment by overtaxing landfills, polluting the oceans, and can even contribute to air quality problems when combusted inefficiently. As just one example, over two million tons of agricultural waste is generated within a five county area of the Tri-Cities within the State of Washington, USA. Heretofore, this waste has been traditionally landfilled or used as fertilizer or low value cattle feed, but in any case, it has not been utilized as fuel.
- Solid fuel compositions consisting essentially of wet-processed biomass are provided.
- Processes for preparing solid fuel can include pelletizing wet-processed biomass material.
- Combustion processes are provided that can include initiating combustion of a pelletized wet-processed biomass material.
- Energy generation processes are included that can include gasifying a biomass pellet.
- Fig. 1 is a process for preparing products from biomass.
- Fig. 2 is a biomass waste material process according to an embodiment.
- Fig. 3 is a combustion process according to an embodiment.
- Fig. 4 is a pelletizing process according to an embodiment.
- Fig. 5 is a pellet stove combustion process according to an embodiment.
- Fig. 6 is a gasification process and gasification fuel utilization process according to an embodiment.
- Solid fuel compositions are provided that include processed biomass.
- the processed biomass can include wet-processed biomass, and/or the processed biomass can be at least partially spent biomass.
- Wet-processed biomass is a type of processed biomass and is to be distinguished from unprocessed biomass.
- biomass is harvested from the field or orchard, for example.
- Harvesting can include processing, for example, as wheat is harvested, kernels are removed from stalks. Further processing can include pulverizing the kernels to flour.
- the production of flour from wheat can be considered dry biomass processing which is to be distinguished from wet biomass processing.
- biomass processing is applied during the processing of biomass such as mint, barley, hops, corn, soy beans, beets, grapes, and oranges, for example.
- biomass 12 is processed according to process parameters 14 to produce a product 16 and waste materials 18.
- Biomass 12 can be processed or unprocessed biomass.
- Process parameters 14 can include wet biomass processing parameters.
- Waste materials 18 can generally be spent wet-processed biomass, and product 16 can be considered wet-processed biomass product.
- biomass 12 can include mint which is processed according to wet process parameters after being cultivated to produce a wet-processed mint oil product and a spent wet-processed mint slug.
- the processing of mint includes the mowing of the mint and then the blowing of the mint, after drying, into a tube.
- Pressurized steam is used to shoot through the tubes to vaporize the mint oil from the mint leaves.
- the oil vapors and steam pass through a line at the top of the tubes to water cooled condensers where they return to a liquid state in a separator.
- the mint oil rises to the top and is drawn into drums.
- biomass 12 can be barley which is wet processed by fermentation to produce the wet-processed product silage.
- Barley is also malted by soaking barley kernels, allowing them to germinate, and then drying. The malted barley is then used to make an extract for beer production, leaving behind the spent wet-processed barley wash.
- hops are typically utilized in the process of manufacturing beer.
- the hops are boiled in water to coagulate unstable proteins and extract tannins in order to create a stable medium for fermentation of the beer.
- the liquid is removed to leave a spent wet-processed biomass comprising spent hops.
- Further wet processing of biomass can include the production of vegetable oil.
- the vegetables can be husked, cleaned, crushed, and conditioned, according to dry processes and then oil extracted according to wet processes generally through the use of a solvent such as hexane. After the extraction and boiling, the liquid oil from the vegetables is skimmed, and the remaining spent wet-processed biomass is considered waste material.
- a solvent such as hexane
- the liquid oil from the vegetables is skimmed, and the remaining spent wet-processed biomass is considered waste material.
- Two particularly important examples that are responsible for the majority of vegetable oil production is the processing of corn and/or soybeans. During this process, the corn and/or soy oils that are produced can be used in the production of compositions such as biodiesel.
- fruit is relieved of its juice in a process to produce a fruit juice wet-processed product and leave behind a fruit pomace spent wet-processed waste material.
- the processing of grapes during wine or even juice production is an example of these wet processes.
- the wet-processed biomass material may be saturated or at least partially saturated with some kind of liquid solution, either organic or an aqueous solution. These materials have been considered high in moisture content, making them undesirable as a fuel source.
- biomass materials 22 such as those described above can be processed utilizing processing apparatus 24 to produce solid fuel 26.
- biomass materials 22 can be compacted to a density of at least 20 lbs/ft 3 ; 20-30 lbs/ft 3 ; 40-45 lbs/ft 3 ; or 20-50 lbs/ft 3 .
- Biomass materials 22 can, prior to being compacted, be combined and/or mixed with other biomass materials.
- wet-processed biomass materials may be combined with either dry-processed or even unprocessed biomass materials, and this combination of materials can then be compacted to form a solid fuel.
- combustion processing apparatus 34 can be utilized to initiate combustion of a biomass solid fuel having a density of at least 20 lbs/ft 3 ; 20-30 lbs/ft 3 ; 40-45 lbs/ft 3 ; or 20-50 lbs/ft 3 comprising waste biomass material.
- the biomass solid fuel can be wet-processed biomass.
- combustion processing apparatus 34 can be configured to periodically provide additional quantities of solid fuel to continue the combustion.
- the energy provided from the combustion can be in the form of heat and the heat can be utilized in numerous ways.
- the heat can be utilized to dry materials, warm the interior of a dwelling, and/or produce steam to drive turbines.
- a pelletizing process 40 is shown that includes biomass waste materials 42 being pelletized to form biomass waste material pellets.
- the biomass waste material can be at least about 50% (wt/wt) wet-processed biomass, for example, spent wet- processed biomass.
- the balance of the biomass waste material can be unprocessed biomass such as straw or even dry-process biomass, such as spent dry-processed biomass. Dry-processed biomass can also include the skins of the vegetables.
- the biomass materials can include extracted mint leaves, pomace, and mixtures of mint leaves and straw materials, including corn stover, for example.
- the processed biomass can also include animal waste such as cattle, chicken, or even hog manure.
- the processed biomass can also include digested waste such as sludge including water treatment sludge, for example.
- glycerin and/or paper mill sludge may be added to the wet-processed biomass prior to pelletizing. Glycerin, a by product of biodiesel manufacturing, can be incorporated into the pellet in an amount of less than 10%.
- the processed biomass can include or be mixed with barley, straw, wheat, rice, flax straw, and even corn stover.
- mint slug may be mixed with straw, wood cuttings, and/or switch grass to form the biomass waste material to be processed. Wood cuttings and mint slug may be combined up to a 50:50 ratio of wood cuttings to mint slug.
- Processing apparatus 24 can include a pellet mill.
- Example pellet mills include but are not limited to California Pellet Mill Model 7726 (available from California Pellet Mill Co., 1114 E. Wabash Avenue, Crawfordsville, IN 47933) ; Sprout Waldron Pellet Mill Model 501 (available from Andritz, Inc., 10745 Westside Parkway, Alpharetta, GA 30004) ; and Bliss Pioneer Pellet Mill Model B120A-141 (available from Bliss Industries, Inc., P.O. Box 910, Ponca City, OK 74602).
- biomass waste material 42 can be provided to the pellet mill, and the pellet mill can compact the biomass waste material to a density of at least 20 lbs/ft 3 ; 20-30 lbs/ft 3 ; 40-45 lbs/ft 3 ; or 20-50 lbs/ft 3 .
- the pellet can have a length longer than its diameter.
- the pellet can define the perimeter of a circle in one cross section and this circle can have a diameter of less than V2 inch.
- any cross section of the pellet can be less than 1 inch in length.
- the pellets may be configured for use in residential pellet stoves.
- processing apparatus 44 can be configured to prepare pellets for use in domestic pellet stoves.
- a pellet stove combustion process 50 is shown that includes the combustion of biomass waste materials pellets 52 utilizing pellet stove combustion apparatus 54 to produce energy 56.
- Biomass waste material pellets 52 can include solid fuel and/or biomass pellets, such as the wet-processed biomass material fuel/pellets described herein.
- Apparatus 54 can be a domestic pellet stove, including but not limited to that manufactured by Alladin, or Quadra-Fire manufactured by Hearth & Home Technologies.
- Energy 56 can be in the form of heat, for example.
- a gasification process 60 is shown that includes biomass waster material pellets 62 being gasified using gasification apparatus 64 to produce fuel 66 which is utilized to facilitate the processing of raw materials 68 according to process 70 to produce product 72.
- Pellets 62 can be those pellets described herein or any commercial solid fuel pellet; however, embodiments of the process utilizing the wet-processed biomass pellets described herein can be advantageous.
- gasification apparatus 64 can include Center for Strategic Alliance - Model GX36-01 (available from Center for Strategic Alliance, 629 East Moulton Street, Hickman, KY 42050) ; Community Power Corp - Model BioMax 100 (available from Community Power Corp., 8110 Shaffer Parkway, Suite 120, Littleton, CO 80127) ; and Integrated Environmental Technologies Biomass Gasifer (available from Integrated Environmental Technologies, LLC, 1935 Butler Loop, Richland, WA 99354).
- Center for Strategic Alliance - Model GX36-01 available from Center for Strategic Alliance, 629 East Moulton Street, Hickman, KY 42050
- Community Power Corp - Model BioMax 100 available from Community Power Corp., 8110 Shaffer Parkway, Suite 120, Littleton, CO 80127
- Integrated Environmental Technologies Biomass Gasifer available from Integrated Environmental Technologies, LLC, 1935 Butler Loop, Richland, WA 99354.
- Fuel 66 produced upon gasification of pellets 62 is typically smaller molecular weight hydrogen compositions including carbon hydrogen compositions, such as diatomic hydrogen and or methane, for example. In certain parlances, this can be referred to as partially gasified fuel or gasification processing fuel.
- This fuel can be provided for further combustion and utilized as the energy source for processing, according to processing apparatus 70, raw material 68 to produce product 72.
- raw material 68 can be any raw materials that need to be processed, including agricultural or nonagricultural materials.
- Processing 70 can utilize the fuel provided 66 in the processing of raw materials 68.
- processing 70 may simply utilize a heat source in the processing of raw material 68, and fuel 66 can provide the fuel for that heat source. In any event, processing 70 produces a product 72.
- fuel 66 may be utilized to charge fuel cells.
- Spent pellets of the gasification process include particles than can be further utilized.
- the process of gasifying the pellets can produce a carbon waste product and this carbon waste product can be utilized as a filtration media, thereby resulting in a process that produces no waste material and is the efficient utilization of previously unutilized at least partially spent or processed biomass.
- a processed biomass such as materials 18 described in Fig. 1 can be utilized to produce energy as disclosed in Fig. 3 as well as Fig. 5 and Fig. 6, and then this energy or fuel may be utilized to process other raw materials to produce a product 72.
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- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Water Supply & Treatment (AREA)
- Processing Of Solid Wastes (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Solid fuel compositions consisting essentially of wet processed biomass are provided. Processes for preparing solid fuel are provided that can include pelletizing wet-processed biomass material. Combustion processes are provided that can include initiating combustion of a pelletized wet processed biomass material. Energy generation processes are included that can include gasifying a biomass pellet.
Description
Solid Fuel Compositions, Processes for Preparing Solid Fuel, and
Combustion Processes
CLAIM FOR PRIORITY
This application claims priority to U.S. Patent Application Serial
No. 11 /801 ,011 entitled "Solid Fuel Compositions, Processes for Preparing Solid Fuel, and Combustion Processes", filed May 8, 2007, the entirety of which is incorporated by reference herein.
TECHNICAL FIELD
The present disclosure provides compositions and processes, and more particularly solid fuel compositions as well as solid fuel composition combustion processes.
BACKGROUND
Waste materials are generated every day, if not every second, throughout the world. These waste materials stress our environment by overtaxing landfills, polluting the oceans, and can even contribute to air quality problems when combusted inefficiently. As just one example, over two million tons of agricultural waste is generated within a five county area of the Tri-Cities within the State of Washington, USA. Heretofore, this waste has been traditionally landfilled or used as fertilizer or low value cattle feed, but in any case, it has not been utilized as fuel.
SUMMARY OF THE DISCLOSURE
Solid fuel compositions consisting essentially of wet-processed biomass are provided.
Processes for preparing solid fuel are provided that can include pelletizing wet-processed biomass material.
Combustion processes are provided that can include initiating combustion of a pelletized wet-processed biomass material.
Energy generation processes are included that can include gasifying a biomass pellet.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred embodiments of the invention are described below with reference to the following accompanying drawings.
Fig. 1 is a process for preparing products from biomass.
Fig. 2 is a biomass waste material process according to an embodiment.
Fig. 3 is a combustion process according to an embodiment.
Fig. 4 is a pelletizing process according to an embodiment.
Fig. 5 is a pellet stove combustion process according to an embodiment.
Fig. 6 is a gasification process and gasification fuel utilization process according to an embodiment.
DESCRIPTION OF THE DISCLOSURE
The present disclosure is described with reference to Figs. 1 -6. Solid fuel compositions are provided that include processed biomass. The processed biomass can include wet-processed biomass, and/or the processed biomass can be at least partially spent biomass. Wet-processed biomass is a type of processed biomass and is to be distinguished from unprocessed biomass. Generally, biomass is harvested from the field or orchard, for example. Harvesting can include processing, for example, as wheat is harvested, kernels are removed from stalks. Further processing can include pulverizing the kernels to flour. The production of flour from wheat can be considered dry biomass processing which is to be distinguished from wet biomass processing.
Wet biomass processing is applied during the processing of biomass such as mint, barley, hops, corn, soy beans, beets, grapes, and oranges, for example. Referring to Fig. 1 , a general depiction of a biomass processing scheme 10 is provided. In this general scheme, biomass 12 is processed according to process parameters 14 to produce a product 16 and waste materials 18. Biomass 12 can be processed or unprocessed biomass. Process parameters 14 can include wet biomass processing parameters. Waste materials 18 can generally be spent wet-processed biomass, and product 16 can be considered wet-processed biomass product.
As an example of a process 10, biomass 12 can include mint which is processed according to wet process parameters after being cultivated to produce a wet-processed mint oil product and a spent wet-processed mint slug. The processing of mint includes the mowing of the mint and then the blowing of the mint, after drying, into a tube.
Pressurized steam is used to shoot through the tubes to vaporize the mint oil from the mint leaves. The oil vapors and steam pass through a line at the top of the tubes to water cooled condensers where they
return to a liquid state in a separator. The mint oil rises to the top and is drawn into drums.
As another example of process 10, biomass 12 can be barley which is wet processed by fermentation to produce the wet-processed product silage. Barley is also malted by soaking barley kernels, allowing them to germinate, and then drying. The malted barley is then used to make an extract for beer production, leaving behind the spent wet-processed barley wash.
As still another example, hops are typically utilized in the process of manufacturing beer. In this biomass process, the hops are boiled in water to coagulate unstable proteins and extract tannins in order to create a stable medium for fermentation of the beer. Upon boiling, the liquid is removed to leave a spent wet-processed biomass comprising spent hops.
Further wet processing of biomass can include the production of vegetable oil. In accordance with these wet processes, the vegetables can be husked, cleaned, crushed, and conditioned, according to dry processes and then oil extracted according to wet processes generally through the use of a solvent such as hexane. After the extraction and boiling, the liquid oil from the vegetables is skimmed, and the remaining spent wet-processed biomass is considered waste material. Two particularly important examples that are responsible for the majority of vegetable oil production is the processing of corn and/or soybeans. During this process, the corn and/or soy oils that are produced can be used in the production of compositions such as biodiesel.
In accordance with another wet process, fruit is relieved of its juice in a process to produce a fruit juice wet-processed product and leave behind a fruit pomace spent wet-processed waste material. The processing of grapes during wine or even juice production is an example of these wet processes.
The wet-processed biomass material may be saturated or at least partially saturated with some kind of liquid solution, either organic or an aqueous solution. These materials have been considered high in moisture content, making them undesirable as a fuel source.
Referring to Fig. 2, a process for preparing the solid fuel is referred to with respect to process 20 of Fig. 2. In accordance with an example embodiment, biomass materials 22 such as those described above can be processed utilizing processing apparatus 24 to produce solid fuel 26. As an example, biomass materials 22 can be compacted to a density of at least 20 lbs/ft3; 20-30 lbs/ft3; 40-45 lbs/ft3; or 20-50 lbs/ft3. Biomass materials 22 can, prior to being compacted, be combined and/or mixed with other biomass materials. As an example, wet-processed biomass materials may be combined with either dry-processed or even unprocessed biomass materials, and this combination of materials can then be compacted to form a solid fuel.
Referring to Fig. 3, a combustion process 30 is depicted utilizing biomass solid fuel 32. The combustion process can utilize a general pellet stove and/or a gasifier, for example, to produce energy 36, leaving behind spent solid fuel 38. According to exemplary embodiments, combustion processing apparatus 34 can be utilized to initiate combustion of a biomass solid fuel having a density of at least 20 lbs/ft3; 20-30 lbs/ft3; 40-45 lbs/ft3; or 20-50 lbs/ft3 comprising waste biomass material. The biomass solid fuel can be wet-processed biomass. In accordance with an example embodiment, combustion processing apparatus 34 can be configured to periodically provide additional quantities of solid fuel to continue the combustion. The energy provided from the combustion can be in the form of heat and the heat can be utilized in numerous ways. For example, the heat can be utilized to dry materials, warm the interior of a dwelling, and/or produce steam to drive turbines.
Referring to Figure 4 a pelletizing process 40 is shown that includes biomass waste materials 42 being pelletized to form biomass waste material pellets. The biomass waste material can be at least about 50% (wt/wt) wet-processed biomass, for example, spent wet- processed biomass. The balance of the biomass waste material can be unprocessed biomass such as straw or even dry-process biomass, such as spent dry-processed biomass. Dry-processed biomass can also include the skins of the vegetables. For example, in the processing of soybeans, the actual skin of the soybean is removed to reveal the soy seed itself. The biomass materials can include extracted mint leaves, pomace, and mixtures of mint leaves and straw materials, including corn stover, for example. The processed biomass can also include animal waste such as cattle, chicken, or even hog manure. The processed biomass can also include digested waste such as sludge including water treatment sludge, for example. As additional ingredients to be utilized during process 40, glycerin and/or paper mill sludge may be added to the wet-processed biomass prior to pelletizing. Glycerin, a by product of biodiesel manufacturing, can be incorporated into the pellet in an amount of less than 10%.
According to exemplary embodiments, the processed biomass can include or be mixed with barley, straw, wheat, rice, flax straw, and even corn stover. As an example, mint slug may be mixed with straw, wood cuttings, and/or switch grass to form the biomass waste material to be processed. Wood cuttings and mint slug may be combined up to a 50:50 ratio of wood cuttings to mint slug.
Processing apparatus 24 can include a pellet mill. Example pellet mills include but are not limited to California Pellet Mill Model 7726 (available from California Pellet Mill Co., 1114 E. Wabash Avenue, Crawfordsville, IN 47933) ; Sprout Waldron Pellet Mill Model 501 (available from Andritz, Inc., 10745 Westside Parkway, Alpharetta, GA 30004) ; and Bliss Pioneer Pellet Mill Model B120A-141 (available from Bliss Industries, Inc., P.O. Box 910, Ponca City, OK 74602).
According to exemplary embodiments, biomass waste material 42 can be provided to the pellet mill, and the pellet mill can compact the biomass waste material to a density of at least 20 lbs/ft3; 20-30 lbs/ft3; 40-45 lbs/ft3; or 20-50 lbs/ft3. The pellet can have a length longer than its diameter. As an example, the pellet can define the perimeter of a circle in one cross section and this circle can have a diameter of less than V2 inch. As another example, any cross section of the pellet can be less than 1 inch in length. The pellets may be configured for use in residential pellet stoves. According to an example embodiment, processing apparatus 44 can be configured to prepare pellets for use in domestic pellet stoves.
Referring to Figure 5, a pellet stove combustion process 50 is shown that includes the combustion of biomass waste materials pellets 52 utilizing pellet stove combustion apparatus 54 to produce energy 56. Biomass waste material pellets 52 can include solid fuel and/or biomass pellets, such as the wet-processed biomass material fuel/pellets described herein. Apparatus 54 can be a domestic pellet stove, including but not limited to that manufactured by Alladin, or Quadra-Fire manufactured by Hearth & Home Technologies. Energy 56 can be in the form of heat, for example.
Referring to Figure 6, a gasification process 60 is shown that includes biomass waster material pellets 62 being gasified using gasification apparatus 64 to produce fuel 66 which is utilized to facilitate the processing of raw materials 68 according to process 70 to produce product 72. Pellets 62 can be those pellets described herein or any commercial solid fuel pellet; however, embodiments of the process utilizing the wet-processed biomass pellets described herein can be advantageous. Examples of gasification apparatus 64 can include Center for Strategic Alliance - Model GX36-01 (available from Center for Strategic Alliance, 629 East Moulton Street, Hickman, KY 42050) ; Community Power Corp - Model BioMax 100 (available from Community Power Corp., 8110 Shaffer Parkway, Suite 120,
Littleton, CO 80127) ; and Integrated Environmental Technologies Biomass Gasifer (available from Integrated Environmental Technologies, LLC, 1935 Butler Loop, Richland, WA 99354).
Fuel 66 produced upon gasification of pellets 62 is typically smaller molecular weight hydrogen compositions including carbon hydrogen compositions, such as diatomic hydrogen and or methane, for example. In certain parlances, this can be referred to as partially gasified fuel or gasification processing fuel. This fuel can be provided for further combustion and utilized as the energy source for processing, according to processing apparatus 70, raw material 68 to produce product 72. In accordance with an example process, raw material 68 can be any raw materials that need to be processed, including agricultural or nonagricultural materials. Processing 70 can utilize the fuel provided 66 in the processing of raw materials 68. For example, processing 70 may simply utilize a heat source in the processing of raw material 68, and fuel 66 can provide the fuel for that heat source. In any event, processing 70 produces a product 72. As another example fuel 66 may be utilized to charge fuel cells.
Spent pellets of the gasification process include particles than can be further utilized. The process of gasifying the pellets can produce a carbon waste product and this carbon waste product can be utilized as a filtration media, thereby resulting in a process that produces no waste material and is the efficient utilization of previously unutilized at least partially spent or processed biomass.
Tying these processes together, a processed biomass such as materials 18 described in Fig. 1 can be utilized to produce energy as disclosed in Fig. 3 as well as Fig. 5 and Fig. 6, and then this energy or fuel may be utilized to process other raw materials to produce a product 72.
Claims
What is claimed is:
I . A solid fuel consisting essentially of wet-processed biomass, the solid fuel having a density of at least 20 lbs/ft3.
2. The solid fuel of claim 1 wherein the solid fuel is in the form of pellets.
3. The solid fuel of claim 1 wherein the wet-processed biomass comprises extracted mint leaves.
4. The solid fuel of claim 3 wherein the wet-processed biomass comprises mint slug.
5. The solid fuel of claim 1 wherein the wet-processed biomass comprises fruit pomace.
6. The solid fuel of claim 5 wherein the wet-processed biomass comprises grape pomace.
7. The solid fuel of claim 1 wherein the wet-processed biomass comprises spent hops.
8. The solid fuel of claim 1 wherein the wet-processed biomass comprises barley waste.
9. The solid fuel of claim 1 wherein the wet-processed biomass comprises beet tailings.
1 0. The solid fuel of claim 1 further comprising less than or equal to about 50% (wt./wt.) unprocessed biomass.
I I . The solid fuel of claim 1 0 wherein : the wet-processed biomass comprises mint slug ; and the unprocessed biomass comprises wood cuttings.
12. The solid fuel of claim 10 wherein the unprocessed biomass is one or more of straw, stover, and vegetable husks.
13. The solid fuel of claim 12 wherein the unprocessed biomass is straw and the straw is one or more of wheat, rice, and flax straw.
14. The solid fuel of claim 10 wherein the unprocessed biomass is switch grass.
15. The solid fuel of claim 1 further comprising glycerin.
16. The solid fuel of claim 1 wherein the solid fuel is in the form of a pellet.
17. The solid fuel of claim 16 wherein the pellet has a length longer than its diameter.
18. The solid fuel of claim 16 wherein the pellet has a circular cross section less than about Vz inch in diameter.
19. The solid fuel of claim 16 wherein any cross section of the pellet is less than about 1 inch in length.
20. The solid fuel of claim 16 wherein the pellets are configured for use in residential pellet stoves.
21 . The solid fuel of claim 1 further comprising less than or equal to about 50% (wt./wt.) digestion waste.
22. The solid fuel of claim 21 wherein the digestion waste comprises sludge.
23. The solid fuel of claim 22 wherein the sludge is sewage sludge.
24. The solid fuel of claim 1 further comprising less than or equal to about 50% (wt./wt.) animal waste.
25. The solid fuel of claim 24 wherein the animal waste comprises cow manure.
26. A process for preparing solid fuel comprising pelletizing material to produce a solid fuel pellet, the material comprising at least 50% (wt./wt.) wet-processed biomass material.
27. The process of claim 26 wherein the wet-processed biomass material is extracted soy beans.
28. The process of claim 26 wherein the material further comprises unprocessed biomass material.
29. The process of claim 28 wherein the wet-processed biomass material comprises mint slug and the unprocessed biomass material comprises straw.
30. The process of claim 28 wherein a weight of the wet-processed biomass material is at least equal to or greater than a weight of the unprocessed biomass material.
31 . The process of claim 26 further comprising storing the solid fuel pellet in a container.
32. The process of claim 31 wherein the container is configured for distribution of the solid fuel pellet for residential use.
33. A combustion process comprising: initiating combustion of a pelletized fuel, the pelletized fuel comprising a wet-processed biomass material; and periodically providing additional quantities of the fuel to continue the combustion.
34. The process of claim 33 wherein the providing further comprises metering in an amount of solid fuel at predetermined rates.
35. The process of claim 33 further comprising utilizing the heat from the combustion as an energy source.
36. The process of claim 33 wherein the combustion is initiated and continued within a residential pellet stove.
37. An energy generation process comprising gasifying a biomass pellet.
38. The process of claim 37 wherein the biomass pellet comprises biomass slug.
39. The process of claim 37 wherein the gasifying creates a carbon waste product.
40. The process of claim 39 wherein the carbon waste product is utilized as filtration media.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US11/801,011 | 2007-05-08 | ||
US11/801,011 US20080280236A1 (en) | 2007-05-08 | 2007-05-08 | Solid fuel compositions, processes for preparing solid fuel, and combustion processes |
Publications (2)
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WO2008138004A2 true WO2008138004A2 (en) | 2008-11-13 |
WO2008138004A3 WO2008138004A3 (en) | 2009-07-30 |
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PCT/US2008/063103 WO2008138004A2 (en) | 2007-05-08 | 2008-05-08 | Solid fuel compositions, processes for preparing solid fuel, and combustion processes |
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US (1) | US20080280236A1 (en) |
WO (1) | WO2008138004A2 (en) |
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Also Published As
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US20080280236A1 (en) | 2008-11-13 |
WO2008138004A3 (en) | 2009-07-30 |
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