LU502556B1 - Fuel briquettes, process and device for their production - Google Patents
Fuel briquettes, process and device for their production Download PDFInfo
- Publication number
- LU502556B1 LU502556B1 LU502556A LU502556A LU502556B1 LU 502556 B1 LU502556 B1 LU 502556B1 LU 502556 A LU502556 A LU 502556A LU 502556 A LU502556 A LU 502556A LU 502556 B1 LU502556 B1 LU 502556B1
- Authority
- LU
- Luxembourg
- Prior art keywords
- waste material
- coffee
- dry mixture
- waste
- compression chamber
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title description 5
- 239000002699 waste material Substances 0.000 claims abstract description 101
- 235000013353 coffee beverage Nutrition 0.000 claims abstract description 80
- 239000000203 mixture Substances 0.000 claims abstract description 59
- 239000004484 Briquette Substances 0.000 claims abstract description 32
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000004332 silver Substances 0.000 claims abstract description 30
- 229910052709 silver Inorganic materials 0.000 claims abstract description 30
- 230000006835 compression Effects 0.000 claims description 62
- 238000007906 compression Methods 0.000 claims description 62
- 238000002156 mixing Methods 0.000 claims description 2
- 241000533293 Sesbania emerus Species 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 3
- 239000004449 solid propellant Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 244000215068 Acacia senegal Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001284615 Frangula californica Species 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- 235000004433 Simmondsia californica Nutrition 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 235000021539 instant coffee Nutrition 0.000 description 1
- 235000013379 molasses Nutrition 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000010925 yard waste Substances 0.000 description 1
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
- C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
- C10L5/445—Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
-
- 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
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/08—Methods of shaping, e.g. pelletizing or briquetting without the aid of extraneous binders
-
- 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
- C10L5/361—Briquettes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/30—Pressing, compressing or compacting
Abstract
The invention relates to a process for producing a fuel briquette made of waste material, comprising the steps of: (a) preparing a substantially dry mixture of waste material consisting of or comprising at least 98 wt.-% coffee waste and coffee silver skin, wherein the moisture content of the substantially dry mixture of waste material is at most 15 wt.-%, preferably at most 14 wt.-%, most preferably between 8 and 13.5 wt.-% of the dry mixture of waste material, and (b) compressing said substantially dry mixture of waste material in a briquette press to obtain the fuel briquette made of waste material.
Description
FUEL BRIQUETTES, PROCESS AND DEVICE FOR THEIR PRODUCTION
[0001] The present invention generally relates to converting waste into a CO» neutral fuel to provide fuel briquettes, in particular to a process for producing a fuel briquette made of such waste material, to such a fuel briquette itself and to a device for producing them.
[0002] Coffee is a brewed drink prepared from ground roasted coffee beans with an enormous consumption around the world. The seeds of the coffee berries are separated to produce a stable, raw product. unroasted green coffee beans. The seeds are then roasted, a process which transforms them into a consumable product. roasted coffee, which is ground into fine particles that are typically extracted with water by any of a number of methods, such as by steeping, drip filtration, percolation, decoction, vacuum filtration, pressurized infusion, etc., to produce a cup of coffee. The spent coffee grounds resulting from the operation are then generally discarded as coffee waste.
[0003] As in 2020, the world production of green coffee beans was over 10.5 Mt and it is estimated that about 50 % of the worldwide coffee production is processed for soluble coffee preparation, it seems clear that the quantity of spent coffee grounds resulting from coffee brewing is huge. In view of the fact that spent coffee grounds have basically only been submitted to an often limited extraction with water, the residual energetic contents of this coffee waste is quite high.
Indeed, the lower heating value of wet spent coffee grounds amounts to about 8.4 MJ/kg, whereas the lower calorific values of dried spent coffee grounds are generally between 19.3 and 24.9 MJ/kg. The conversion of this coffee waste into a solid fuel would thus seem an interesting undertaking, all the more so as such a fuel would be CO: neutral and thus sustainable.
[0004] Now, solid fuels from particulate matter can be produced for example by briquetting. Fuel briquettes generated by the low-pressure compaction of paper, sawdust, agricultural or yard waste, etc. are known to serve as an alternative to firewood, wood pellets and charcoal.
[0005] However, when trying to produce fuel briquettes from only coffee waste (spent coffee grounds) at any workable content of moisture, the resulting briquettes remain brittle, even when applying very high pressures.
[0006] While it is known to add different binders, such as starch, clay, molasses or gum Arabic, to particulate matter to obtain briquettes with sufficient sturdiness, it would be highly desirable for sustainability reasons, if no extraneous ingredients would be needed in the process for producing fuel briquettes from coffee waste.
[0007] It is thus an object of the present invention to provide a process and device for producing a fuel briquette made of spent coffee grounds which are sufficiently sturdy to keep their briquette shape during transport and handling and which present good burning characteristics.
General Description of the Invention
[0008] To achieve this object, the present invention proposes, in a first aspect, a process for producing a fuel briquette made of waste material, comprising the steps of (a) preparing a substantially dry mixture of waste material consisting of or comprising at least 98 wt.-% coffee waste and coffee silver skin, wherein the moisture content of the substantially dry mixture of waste material is at most 15 wt.-%, preferably at most 14 wt.-%, most preferably between 8 and 13.5 wt.-% of the dry mixture of waste material, (b) compressing said substantially dry mixture of waste material in a briquette press to obtain the fuel briquette made of waste material.
[0009] The inventors have surprisingly found after experimenting with different types of mixtures, pressures, speeds, additives and even different briquetting presses, that coffee silver skin can act as a binder in the briquetting of spent coffee grounds when operating at moisture contents below 15 wt.-%, preferably below 14 wt.-%, based on the dry mixture of waste material. Hence, not only are no further ingredients required, but actually coffee silver skin is moreover usually readily available to those roasting coffee as a by-product, because it is the thin inner-parchment layer that clings to the green coffee bean that comes off the coffee only during the roasting process and is usually collected and then discarded by the coffee roaster. Only recently there had been studies to check the potential usefulness of coffee silver skin in cosmetics.
[0010] Hence, the invention allows for a particularly sustainable production of
CO:2 neutral solid fuel, as the spent coffee grounds can be collected when delivering roasted coffee beans (or ground roasted coffee) to the consumer and combined to the silver skin, which represents about 4.2% (w/w) of coffee beans, collected by the coffee roaster, thereby reducing transport and associated carbon footprint. The valorization of both spent coffee grounds and silver skin as described herein thus clearly enroll in a circular economy development.
[0011] While a reduced quantity of other ingredients could be added for whatever reason, the substantially dry mixture of waste material preferably consists of only coffee waste, coffee silver skin and moisture, the moisture content of the substantially dry mixture of waste material being ideally between 8 and 14 wt.-% of the dry mixture of waste material.
[0012] The briquetting process of the coffee waste and silver skin is basically done only by applying pressure, i.e. by compression, such as with a hydraulic or mechanical press comprising a hydraulic cylinder/mechanical actuator and a compression chamber. While the pressure required may to some extent vary based on the actual ingredients and their moisture content, the pressure applied on the mixture of waste material during compression is generally from 125 to 180 bar, preferably from 135 to 170 bar, more preferably from 145 to 160 bar, in particular about 150 bar.
[0013] The inventors have identified that particularly sturdy briquettes can be obtained if the substantially dry mixture of waste material is prepared by mixing from 45 to 55 wt.-% of coffee waste and from 55 to 45 wt.-% of coffee silver skin, preferably about 50 wt.-% of coffee waste and about 50 wt.-% of coffee silver skin, wherein the term about means +/- 1 wt.-% of the total amount of waste material.
[0014] As already hinted at above, the compression in step (b) is preferably effected in a compression chamber, wherein the waste material is submitted to the pressure of a (stamp actuated by a) compression cylinder compressing the waste material from the open end side/admission opening. To yield cylindrically shaped briquettes the compression chamber has a cylindrical shape wherein the stamp is moved by the compression cylinder to reduce the volume and thus compress the waste material. Other shapes for the briquettes are also possible, e.g. a parallelepiped or cubic shape or even briquettes with a polygonal cross-section, by using appropriately shaped compression chamber and stamp.
[0015] The inventors have found that the sturdiness of the briquettes can still be improved if required or desired by using a tapered compression chamber, i.e. a compression chamber whose cross-section is progressively (slightly) reduced towards its closed end, at a certain angle (angle of taper) with respect to the circumscribed non-tapered shape. Hence, the compression chamber preferably has a shape of a truncated cone (for cylindrically shaped briquettes) or a truncated pyramid with a polygon base (for briquettes with a polygon cross-section), most preferably the compression chamber having a shape of a truncated right pyramid (for briquettes with a square cross-section, i.e. for either cubic or rectangular parallelepiped shaped briquettes). It is clear to the skilled person that the depth of the compression chamber left when the compression cylinder is pushed to its working maximum (and the quantity of waste therein) largely determine the length of the briquette, while its cross-section is basically determined by the dimensions of the compression chamber. Advantageous angles of the taper of the compression chamber are between 2 and 10 °, preferably between 3 and 7 °, most preferably between 3.5 and 5 °.
[0016] In a second aspect, the invention provides a fuel briquette made of a mixture of waste material, preferably obtained by a process according to the first aspect, wherein the mixture of waste material consists of or comprises at least 98 wt.-% coffee waste and coffee silver skin having been compressed as a substantially dry mixture with a moisture content of at most 15 wt.-%, preferably at most 14 wt.-%, most preferably between 8 and 13.5 wt.-%.
[0017] In a third aspect, the invention proposes a fuel briquette press with a compression cylinder and a compression chamber, said briquette press being configured for producing fuel briquettes made of waste material, said waste material being a substantially dry mixture of waste material consisting of or comprising at least 98 wt.-% coffee waste and coffee silver skin, wherein the moisture content of the substantially dry mixture of waste material is at most wt.-%, preferably at most 14 wt.-%, most preferably between 8 and 13.5 wt.-% of the dry mixture of waste material, by compressing said substantially dry mixture of waste material with said compression cylinder within said compression chamber, wherein the compression chamber is a tapered compression chamber, preferably the compression chamber having a shape of a truncated cone or a truncated pyramid with a polygon base, most preferably the compression chamber having a shape of a truncated right pyramid.
[0018] A fourth aspect of the invention is the use of a substantially dry mixture of waste material consisting of or comprising at least 98 wt.-% coffee waste and coffee silver skin, wherein the moisture content of the substantially dry mixture of waste material is at most 15 wt.-%, preferably at most 14 wt.-%, most preferably between 8 and 13.5 wt.-% of the dry mixture of waste material, for producing fuel briquettes made of waste material.
[0019] Finally, a fifth aspect relates to the use of a briquette press having a tapered compression chamber, preferably the compression chamber having a shape of a truncated cone or a truncated pyramid with a polygon base, most preferably the compression chamber having a shape of a truncated right pyramid, for producing fuel briquettes made of waste material.
[0020] Preferred embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings in which:
Fig. 1A and 1B are photographs of briquettes made of only spent coffee grounds (1A) and using a mixture of spent coffee grounds and coffee silver skin according to the invention (1B);
Fig. 2 is a cross-sectional schematic view of an embodiment of a briquette press useable in the context of the present invention; and
Fig. 3 is a isometric schematic tridimensional view of a tapered compression chamber according to an embodiment of the present invention.
[0021] Further details and advantages of the present invention will be apparent from the following detailed description of several not limiting embodiments with reference to the attached drawings.
[0022] Fig. 1A shows fuel briquettes obtained with only spent coffee grounds (coffee waste): the fuel briquettes are brittle and readily break apart, even without much handling. Fig. 1B shows fuel briquettes obtained according to the invention by compressing a substantially dry mixture of waste material consisting of coffee waste and coffee silver skin, wherein the moisture content of the substantially dry mixture of waste material is at most 15 wt.-%. The resulting fuel briquettes have clearly the intended shape and are sufficiently sturdy for transport and handling without significant disintegration or dusting.
[0023] Fig. 2 represents a cross-sectional schematic view of briquette press 100 with a receiving hopper 110 for receiving a substantially dry mixture M of waste material (essentially) consisting of coffee waste and coffee silver skin. A screw conveyor 120 feeds the mixture M to feeding chamber 130 while compression cylinder 140 driven by flywheel 150 (or alternatively a hydraulic compression cylinder) pushes the mixture M into the tapered compression chamber 160. At the egress of tapered compression chamber 160 sturdy compressed fuel briquettes B of mixture M are obtained.
[0024] Fig. 3 represents a isometric schematic view of an embodiment of a tapered compression chamber 160, wherein a mixture M enters the tapered compression chamber 160 with its surrounding walls 165 through the larger admission opening 161, is compressed by the reciprocating compression piston (not shown) and the compressed mixture exits the compression chamber 160 through a smaller 169 as fuel briquette B. The dashed lines 166 show the shape of a corresponding non-tapered compression chamber (not according to the invention) where the cross-sectional surface of the admission opening and the exit opening would be of identical size.
Legend: 100 briquette press 110 receiving hopper 120 screw conveyor 130 feeding chamber 140 compression cylinder 150 flywheel 160 compression chamber 161 admission opening 165 walls of the compression chamber 166 dashed lines representing corresponding non-tapered compression chamber 169 exit opening
M mixture of waste material (essentially) consisting of coffee waste and coffee silver skin
B fuel briquette
Claims (15)
1. A process for producing a fuel briquette (B) made of waste material, comprising the steps of (a) preparing a substantially dry mixture (M) of waste material consisting of or comprising at least 98 wt.-% coffee waste and coffee silver skin, wherein the moisture content of the substantially dry mixture of waste material is at most 15 wt.-%, preferably at most 14 wt.-%, most preferably between 8 and 13.5 wt.-% of the dry mixture of waste material, and (b) compressing said substantially dry mixture of waste material in a briquette press (100) to obtain the fuel briquette (B) made of waste material.
2. The process according to claim 1, wherein the substantially dry mixture (M) of waste material consists of only coffee waste, coffee silver skin and moisture, the moisture content of the substantially dry mixture of waste material being between 8 and 13.5 wt.-% of the dry mixture of waste material.
3. The process according to claim 1 or 2, wherein in step (b) the pressure applied on the mixture of waste material during compression is from 125 to 180 bar, preferably from 135 to 170 bar, more preferably from 145 to 160 bar, in particular about 150 bar.
4. The process according to any of claims 1 to 3, wherein in step (a) the substantially dry mixture (M) of waste material is prepared by mixing from 45 to wt.-% of coffee waste and from 55 to 45 wt.-% of coffee silver skin, preferably about 50 wt.-% of coffee waste and about 50 wt.-% of coffee silver skin.
5. The process according to any of claims 1 to 3, wherein in step (b) the compression is effected in a tapered compression chamber (160), preferably the compression chamber (160) having a shape of a truncated cone or a truncated pyramid with a polygon base, most preferably the compression chamber having a shape of a truncated right pyramid.
6. The process according to claim 5, wherein the angle of the taper of the compression chamber (160) is between 2 and 10 °, preferably between 3 and 7 °, most preferably between 3.5 and 5 °.
7. A fuel briquette (B) made of a mixture of waste material, preferably obtained by a process according to claims 1 to 6, wherein the mixture of waste material consists of or comprises at least 98 wt.-% coffee waste and coffee silver skin having been compressed as a substantially dry mixture with a moisture content of at most 15 wt.-%, preferably at most 14 wt.-%, most preferably between 8 and 13.5 wt.-%.
8. The fuel briquette (B) as claimed in claim 7, wherein the substantially dry mixture (M) of waste material consisting of or comprising at least 98 wt.-% coffee waste and coffee silver skin has been compressed at a pressure from 125 to 180 bar, preferably from 135 to 170 bar, more preferably from 145 to 160 bar, in particular about 150 bar.
9. The fuel briquette (B) as claimed in claim 7 or 8, wherein the mixture of waste material consists of only coffee waste, coffee silver skin and moisture, the moisture content of the substantially dry mixture of waste material being between 8 and 13.5 wt.-% of the dry mixture of waste material.
10. The fuel briquette (B) according to any of claims 7 to 9, wherein the substantially dry mixture of waste material comprises from 45 to 55 wt.-% of coffee waste and from 55 to 45 wt.-% of coffee silver skin, preferably about wt.-% of coffee waste and about 50 wt.-% of coffee silver skin.
11. A briquette press (100) with a compression cylinder (140) and a compression chamber (160), said briquette press (100) being configured for producing fuel briquettes (B) made of waste material, said waste material being a substantially dry mixture (M) of waste material consisting of or comprising at least 98 wt.-% coffee waste and coffee silver skin, wherein the moisture content of the substantially dry mixture of waste material is at most 15 wt.-%, preferably at most 14 wt.-%, most preferably between 8 and 13.5 wt.-% of the dry mixture of waste material, by compressing said substantially dry mixture of waste material with said compression cylinder (140) within said compression chamber (160), wherein the compression chamber (160) is a tapered compression chamber, preferably the compression chamber (106) having a shape of a truncated cone or a truncated pyramid with a polygon base, most preferably the compression chamber having a shape of a truncated right pyramid.
12. The briquette press (B) according to claim 11, wherein the angle of the taper of the compression chamber (160) is between 2 and 10 °, preferably between 3 and 7 °, most preferably between 3.5 and 5 °.
13. The briquette press (B) as claimed in claim 11 or 12, configured for providing a pressure on the compression cylinder (140) during compression from 125 to 180 bar, preferably from 135 to 170 bar, more preferably from 145 to 160 bar, in particular about 150 bar.
14. Use of a substantially dry mixture of waste material consisting of or comprising at least 98 wt.-% coffee waste and coffee silver skin, wherein the moisture content of the substantially dry mixture (M) of waste material is at most 15 wt.- %, preferably at most 14 wt.-%, most preferably between 8 and 13.5 wt.-% of the dry mixture of waste material, for producing fuel briquettes (B) made of waste material.
15. Use of a briquette press having a tapered compression chamber, preferably the compression chamber (160) having a shape of a truncated cone or a truncated pyramid with a polygon base, most preferably the compression chamber having a shape of a truncated right pyramid, for producing fuel briquettes (B) made of waste material consisting of or comprising at least 98 wt.-% coffee waste and coffee silver skin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU502556A LU502556B1 (en) | 2022-07-25 | 2022-07-25 | Fuel briquettes, process and device for their production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU502556A LU502556B1 (en) | 2022-07-25 | 2022-07-25 | Fuel briquettes, process and device for their production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU502556B1 true LU502556B1 (en) | 2024-01-25 |
Family
ID=82799931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU502556A LU502556B1 (en) | 2022-07-25 | 2022-07-25 | Fuel briquettes, process and device for their production |
Country Status (1)
| Country | Link |
|---|---|
| LU (1) | LU502556B1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2987843A3 (en) * | 2012-03-12 | 2013-09-13 | Rid Solution | Solid fuel composition, useful for preparing by-products for food industry, comprises mixture of used coffee grounds and at least a cellulosic agent, which includes scurf of coffee grains |
| WO2017093757A1 (en) * | 2015-12-04 | 2017-06-08 | Bio-Bean Limited | Biofuel |
-
2022
- 2022-07-25 LU LU502556A patent/LU502556B1/en active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2987843A3 (en) * | 2012-03-12 | 2013-09-13 | Rid Solution | Solid fuel composition, useful for preparing by-products for food industry, comprises mixture of used coffee grounds and at least a cellulosic agent, which includes scurf of coffee grains |
| WO2017093757A1 (en) * | 2015-12-04 | 2017-06-08 | Bio-Bean Limited | Biofuel |
Non-Patent Citations (1)
| Title |
|---|
| ANONYMUS: "Brikettierpresse", 18 September 2021 (2021-09-18), pages 1 - 4, XP093032282, Retrieved from the Internet <URL:https://de.wikipedia.org/wiki/Brikettierpresse> [retrieved on 20230316] * |
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