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Pyrolysis oil, sometimes also known as biocrude or bio-oil, is a synthetic fuel with few industrial application and under investigation as substitute for petroleum. It is obtained by heating dried biomass without oxygen in a reactor at a temperature of about 500 °C (900 °F) with subsequent cooling, separation from the aqueous phase and other ...
Tall oil, also called liquid rosin or tallol, is a viscous yellow-black odorous liquid obtained as a by-product of the kraft process of wood pulp manufacture when pulping mainly coniferous trees. [ 1][ 2] The name originated as an anglicization of the Swedish tallolja ('pine oil'). [ 3] Tall oil is the third largest chemical by-product in a ...
1979 oil crisis. A drop in oil production in the wake of the Iranian Revolution led to an energy crisis in 1979. Although the global oil supply only decreased by approximately four percent, [ 2] the oil markets' reaction raised the price of crude oil drastically over the next 12 months, more than doubling it to $39.50 per barrel ($248/m 3 ).
By far the greatest cause of motor-oil pollution in oceans comes from drains and urban street-runoff, much of it caused by improper disposal of engine oil. [49] One US gallon (3.8 L) of used oil can generate a 32,000 m 2 (8 acres) slick on surface water, threatening fish, waterfowl and other aquatic life. [48]
The three most quoted oil products are North America 's West Texas Intermediate crude (WTI), North Sea Brent Crude, and the UAE Dubai Crude, and their pricing is used as a barometer for the entire petroleum industry, although, in total, there are 46 key oil exporting countries. Brent Crude is typically priced at about $2 over the WTI Spot price ...
The emissions from ships have generally been controlled by the following sulfur caps on any fuel oil used on board: 3.50% on and after 1 January 2012 and 0.50% on and after 1 January 2020. [25] Further removal of sulfur translates to additional energy and capital costs [26] and can impact fuel price and availability. If priced correctly the ...
The 1980s oil glut was a significant surplus of crude oil caused by falling demand following the 1970s energy crisis. The world price of oil had peaked in 1980 at over US$35 per barrel (equivalent to $129 per barrel in 2023 dollars, when adjusted for inflation); it fell in 1986 from $27 to below $10 ($75 to $28 in 2023 dollars). [2] [3] The ...
The Otto cycle is a description of what happens to a gas as it is subjected to changes of pressure, temperature, volume, addition of heat, and removal of heat. The gas that is subjected to those changes is called the system. The system, in this case, is defined to be the fluid (gas) within the cylinder.
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