WO2008053163A1 - Extarction of oil from food wastes - Google Patents
Extarction of oil from food wastes Download PDFInfo
- Publication number
- WO2008053163A1 WO2008053163A1 PCT/GB2007/004053 GB2007004053W WO2008053163A1 WO 2008053163 A1 WO2008053163 A1 WO 2008053163A1 GB 2007004053 W GB2007004053 W GB 2007004053W WO 2008053163 A1 WO2008053163 A1 WO 2008053163A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oily component
- solids
- centrifugal separator
- pump
- oil
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B13/00—Recovery of fats, fatty oils or fatty acids from waste materials
-
- 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
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Definitions
- This invention relates to the extraction of oil from food wastes.
- One of the most useful materials which can be extracted are oils, so called “bio-oils” which are contained in much biological waste material, whether of animal or plant origin.
- a wide variety of sources of waste arise at all stages of the supply and processing chain from field to catering waste, principally in economically recoverable quantities from food processing factories, abattoirs, supermarket remainders, and catering waste arising from food preparation and food leftovers.
- the process thus described was adapted to process the fat scrapings from hides and skins to a tallow oil which is usable as a fuel for combustion for example by boiler burners.
- a tallow oil which is usable as a fuel for combustion for example by boiler burners.
- the wastes from a catering establishment may for example contain both preparation waste such as uncooked vegetable peelings, bones and trimmings from meat including excess fat and gristle, and also left over cooked food. All these present a range of properties to the processor, and offer different proportions and types of recoverable useful oil.
- apparatus for extraction of oil from food wastes comprises means for finely dividing food waste, means for controlledly heating the finely divided product, and centrifugal separator means providing separate outputs for solids, liquids, and for an oily component, and for storing the oily component.
- the invention also provides a method for extraction of oil from food wastes, comprising finely dividing food waste, controlledly heating the finely divided product, and separating the resulting product by means of a centrifugal separator into separate outputs for solids, liquids and for an oily component, and storing the oily component.
- the oily component may comprise a mixture of animal and/or vegetable fats, and some free fatty acids and the like ranging from volatile low m.w. oils to waxy, high m.w. components.
- the mixture is often referred to as "tallow”.
- the raw material may, prior to processing be scanned with a metal detector, and any foreign bodies or metal contaminated parts removed.
- the material is then preferably ground or macerated in a mincer or macerator.
- This may be a helical device comprising a rotor and a stator, each provided with teeth, ribs or grooves appropriate for shredding a range of materials.
- the ground material may then be heated for e.g. 20 minutes to e.g. 80°C in an in-line heater, and then pumped to a three phase decanter centrifugal separator.
- the solids may be discharged by a progressive cavity pump, or other conveyor, either for further processing or waste disposal, and the water by gravity to effluent.
- a centrifugal pump may be used to pump the oily component to a storage tank.
- the raw material is introduced as a slurry or pulp via a pump 10 to a preliminary examination stage 11 where a metal detector is used to detect the presence of metal parts or articles in the material. This will enable foreign bodies such as cutlery items like knives or forks discarded with restaurant left overs for example, lead pellets in game carcasses and the like to be detected.
- a metal detector is used to detect the presence of metal parts or articles in the material.
- the clean material is fed to a disintegrator 13 wherein the material is macerated to a uniform slurry using a mincer/macerator.
- This comprises one or more toothed or grooved rotors and an interdigitatingly toothed or grooved stator, between which the material is forced under pump pressure.
- the teeth of the mincer may be provided in a variety of shapes to cope with a range of materials.
- the macerated material is pumped through an in-line steel kettle 14 which heats the slurry.
- the kettle uses live steam as its heating medium. This has the advantage that it can be precisely controlled, for example in response to a central control computer which in turn responds in accordance with a control programme, and the data received from sensors detecting characteristics such as temperature and viscosity of input and output material streams, to continuously maintain these within desired ranges.
- the slurry output from the in-line kettle 14 is then passed to an in-line heater
- the product emerging from the heater 15 is then pumped to a separator 16 which comprises a three-phase decanter centrifuge.
- the centrifuge is adapted to separate the slurry into solids, water waste and tallow.
- the solids are discharged by a progressive cavity pump 17 which discharges the solids to a skip or other container 18.
- the liquid or water based waste is discharged by gravity to an effluent exit 19.
- the tallow is pumped from the separator 16 to a separate storage tank 20 by a centrifugal pump 21.
- the process operates on a continuous basis, with the material being processed being continuously fed at the input, and a continuous output of tallow and solid and liquid residues being maintained during operation.
- “Tallow” refers to all oil components extracted from the input material, of whatever melting point or molecular weight, or precise structure or composition. The tallow is a blend of all the oil components, and this may vary with the nature of the source material. It may contain aliphatic and aromatic oils, and have any appropriate carbon number and range from highly volatile low m.w. oils to waxy high m.w. oils.
- the process is, as noted, carried out under the control of a pre-programmed microprocessor.
- This includes start and stop routines, and provision for monitoring each stage, and in particular the separator centrifuge 16.
- the start routine brings the apparatus to working temperature and starts the various components in turn to check their operation.
- the system stop routine incorporates a cleaning sequence that ensures that the machine is available to start up when necessary, with no operator involvement in cleaning.
- the equipment of the apparatus includes flushing and other cleaning apparatus which operates under the control of this sequence.
- the microprocessor has a waterproof touch screen to provide an operator interface, and to display information concerning the performance of the operation.
- the operator using the input interface provided by the touch screen can set various parameters such as precise operating temperatures, and throughput rates, dwell times etc, and provision is also provided for data logging from the microprocessor.
- the apparatus is constructed on a closed frame which provides a mounting for all the various components.
- the frame is of monocoque construction and manufactured from steel which has been specially coated, and fitted with feet, and with mounting brackets for all the components.
- AU transfer steps are effected in sealed pipes to prevent any odour emissions from the machine, and the latter is also fully weather protected and is designed to be installed outdoors on a level concrete base.
- the dimensions of the apparatus are similar to that of a shipping container, for example from 6 to 12 metres long, depending on capacity.
- the apparatus is intended to be supplied as a ready to operate unit, and can be sited where the food waste material is produced at a food processing plant, an abattoir, or a large scale catering establishment such as an institutional kitchen.
- the tallow may be processed after collection to make useful products, including, refining for use as fuel oil such as bio-diesel or lubricants., or as a fuel for power generation.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Centrifugal Separators (AREA)
- Fats And Perfumes (AREA)
- Processing Of Solid Wastes (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES07824300T ES2422660T3 (en) | 2006-10-28 | 2007-10-24 | Oil extraction from food waste |
EP20070824300 EP2099887B1 (en) | 2006-10-28 | 2007-10-24 | Extraction of oil from food wastes |
CA2667227A CA2667227C (en) | 2006-10-28 | 2007-10-24 | Extraction of oil from food wastes |
US12/447,218 US8163945B2 (en) | 2006-10-28 | 2007-10-24 | Extraction of oil from food wastes |
MX2009004285A MX2009004285A (en) | 2006-10-28 | 2007-10-24 | Extarction of oil from food wastes. |
PL07824300T PL2099887T3 (en) | 2006-10-28 | 2007-10-24 | Extraction of oil from food wastes |
DK07824300T DK2099887T3 (en) | 2006-10-28 | 2007-10-24 | Extraction of oil from food waste |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0621504A GB0621504D0 (en) | 2006-10-28 | 2006-10-28 | Extraction of oil from food wastes |
GB0621504.0 | 2006-10-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008053163A1 true WO2008053163A1 (en) | 2008-05-08 |
Family
ID=37546163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2007/004053 WO2008053163A1 (en) | 2006-10-28 | 2007-10-24 | Extarction of oil from food wastes |
Country Status (9)
Country | Link |
---|---|
US (1) | US8163945B2 (en) |
EP (1) | EP2099887B1 (en) |
CA (1) | CA2667227C (en) |
DK (1) | DK2099887T3 (en) |
ES (1) | ES2422660T3 (en) |
GB (1) | GB0621504D0 (en) |
MX (1) | MX2009004285A (en) |
PL (1) | PL2099887T3 (en) |
WO (1) | WO2008053163A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11576402B2 (en) | 2013-08-16 | 2023-02-14 | James K. Zitnik | Systems and methods for producing pet food |
US9872509B2 (en) * | 2013-08-16 | 2018-01-23 | James K. Zitnik | Systems and methods for improved rendering |
US10828581B2 (en) | 2015-01-13 | 2020-11-10 | FHNC Ltd. Co. | Wastewater separation system |
CN112188995A (en) | 2018-03-02 | 2021-01-05 | 波尔纳工程公司 | Sustainable silicates and methods for their extraction |
EP3660135A1 (en) * | 2018-11-30 | 2020-06-03 | Alfa Laval Corporate AB | Method of producing a low-fat product and a system for producing a low-fat product |
GB2612150B (en) | 2022-02-02 | 2023-11-08 | Bisviridi Ltd | Improvements in anaerobic treatment of waste |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB292327A (en) | 1926-12-22 | 1928-06-22 | John Lewis | Process and apparatus for the extraction of oils, fats and the like from animal or fish matter |
GB613439A (en) | 1945-01-11 | 1948-11-29 | Separator Ab | Process and arrangements for the recovery of oils from fat animal matter |
US4335146A (en) | 1981-02-02 | 1982-06-15 | Alfa-Laval, Inc. | Processing fish raw material |
WO1985003415A1 (en) | 1984-02-03 | 1985-08-15 | Alfa-Laval Food & Dairy Engineering Ab | Method for obtaining a meal with a high protein quality |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69229401T2 (en) * | 1991-11-27 | 1999-10-14 | Den Norske Stats Oljeselskap A/S | BUOY FOR LOADING AND UNLOADING |
-
2006
- 2006-10-28 GB GB0621504A patent/GB0621504D0/en not_active Ceased
-
2007
- 2007-10-24 EP EP20070824300 patent/EP2099887B1/en active Active
- 2007-10-24 WO PCT/GB2007/004053 patent/WO2008053163A1/en active Application Filing
- 2007-10-24 CA CA2667227A patent/CA2667227C/en active Active
- 2007-10-24 PL PL07824300T patent/PL2099887T3/en unknown
- 2007-10-24 DK DK07824300T patent/DK2099887T3/en active
- 2007-10-24 ES ES07824300T patent/ES2422660T3/en active Active
- 2007-10-24 US US12/447,218 patent/US8163945B2/en active Active
- 2007-10-24 MX MX2009004285A patent/MX2009004285A/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB292327A (en) | 1926-12-22 | 1928-06-22 | John Lewis | Process and apparatus for the extraction of oils, fats and the like from animal or fish matter |
GB613439A (en) | 1945-01-11 | 1948-11-29 | Separator Ab | Process and arrangements for the recovery of oils from fat animal matter |
US4335146A (en) | 1981-02-02 | 1982-06-15 | Alfa-Laval, Inc. | Processing fish raw material |
WO1985003415A1 (en) | 1984-02-03 | 1985-08-15 | Alfa-Laval Food & Dairy Engineering Ab | Method for obtaining a meal with a high protein quality |
Also Published As
Publication number | Publication date |
---|---|
EP2099887B1 (en) | 2013-02-20 |
GB0621504D0 (en) | 2006-12-06 |
ES2422660T3 (en) | 2013-09-12 |
EP2099887A1 (en) | 2009-09-16 |
CA2667227C (en) | 2015-04-21 |
US8163945B2 (en) | 2012-04-24 |
DK2099887T3 (en) | 2013-06-03 |
PL2099887T3 (en) | 2013-11-29 |
US20100029965A1 (en) | 2010-02-04 |
MX2009004285A (en) | 2009-09-18 |
CA2667227A1 (en) | 2008-05-08 |
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