Supercritical Reactors Introduction Some of the most environmentally friendly biodiesel feedstocks are used cooking oil and waste grease.
History[ edit ] Rudolf Diesel Rudolf Diesel was the father of the engine which bears his name. His first attempts were to design an engine to run on coal dust, but later designed his engine to run on vegetable oil.
The idea, he hoped, would make his engines more attractive to farmers having a source of fuel readily available. In a presentation to the British Institute of Mechanical Engineershe cited a number of efforts in this area and remarked, "The fact that fat oils from vegetable sources can be used may seem insignificant today, but such oils may perhaps become in course of time of the same importance as some natural mineral oils and the tar products are now.
The s also saw the formation of the first commercial enterprise to allow consumers to run straight vegetable oil in their automobiles, Elsbett of Germany. In the s Bougainville conflictislanders cut off from oil supplies due to a blockade used coconut oil to fuel their vehicles.
The engine is started on diesel, switched over to vegetable oil as soon as it is warmed up and switched back to diesel shortly before being switched off to ensure that no vegetable oil remains in the engine or fuel lines when it is started from cold again.
In colder climates it is often necessary to heat the vegetable oil fuel lines and tank as it can become very viscous and even solidify. Single tank conversions have been developed, largely in Germany, which have been used throughout Europe.
These conversions are designed to provide reliable operation with rapeseed oil that meets the German rapeseed oil fuel standard DIN Modifications to the engines cold start regime assist combustion on start up and during the engine warm up phase.
Direct injection DI engines generally have to be preheated with a block heater or diesel fired heater. For long term durability it has been found necessary to increase the oil change frequency and to pay increased attention to engine maintenance.
Indirect injection Mercedes-Benz vehicles with in-line injection pumps and cars featuring the PSA XUD engine tend to perform reasonably, especially as the latter is normally equipped with a coolant heated fuel filter. Engine reliability would depend on the condition of the engine. Attention to maintenance of the engine, particularly of the fuel injectors, cooling system and glow plugs will help to provide longevity.
Ideally the engine would be converted. Cosolvent blending is a low-cost and easy-to-adapt technology that reduces viscosity by diluting the vegetable oil with a low-molecular-weight solvent.
Noted problems include higher rates of wear and failure in fuel pumps and piston rings when using blends.
Bioliquids When liquid fuels made from biomass are used for energy purposes other than transport, they are called bioliquids. If cleaned at home by the consumer, WVO can result in considerable savings.
Many restaurants will receive a minimal amount for their used cooking oil, and processing to biodiesel is fairly simple and inexpensive.Recycled vegetable oil, also termed used vegetable oil (UVO), waste vegetable oil (WVO), used cooking oil (UCO), or yellow grease (in commodities exchange), is recovered from businesses and industry that use the oil for cooking.
Jan 13, · Woah, I couldn't believe it myself, until I watched this! Introduction. Vegetable oil can be used as diesel fuel just as it is, without being converted to biodiesel. The downside is that straight vegetable oil (SVO) is much more viscous (thicker) than conventional diesel fuel or biodiesel, and it doesn't burn the same in the engine -- many studies have found that it can damage engines.
The production of oil seeds, percentage oil recovery and their respective cost are given in , which indicates that the use of vegetable oils as sources of diesel would require more efforts to increase the production of oil Comparison Of Properties Of Biodiesel With Waste Vegetable Oil And Diesel The properties of Biodiesel obtained.
Biodiesel is meant to be used in standard diesel engines and is thus distinct from the vegetable and waste oils used to fuel converted diesel engines. Total world production of vegetable oil for all purposes in /06 was about million tonnes, with about 34 million tonnes each of .
Recycled vegetable oil, also termed used vegetable oil (UVO), waste vegetable oil (WVO), used cooking oil (UCO), or yellow grease (in commodities exchange), is recovered from businesses and industry that use the oil for cooking. Jan 13, · Woah, I couldn't believe it myself, until I watched this! Source: Engine Manufacturers Association How does the bio-diesel derived from castor oil rate on the above aspects? Ash content: Castor oil has an ash content of about % Sulfur %: is less than % Potassium: Negligible Heating value: GJ/T. At this number, it compares favourably with most vegetable .
In comparison, waste vegetable oil production is much easier, though its applicability to vehicles is dependent on the conversion of the existing diesel engine. The process of creating.