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Liquid intermediates from pyrolysis and hydrothermal liquefaction (HTL) can be co-processed in an oil refinery along with conventional crude oil. After pyrolysis, the vapors are condensed to give a dark brown fast pyrolysis bio-oil (FPBO). In fast pyrolysis, biomass is quickly heated to around 500 °C in the absence of oxygen.
A new study by a team from Environmental Health & Engineering (EH&E) has found that greenhouse gas emissions from corn ethanol are 46% lower than those from gasoline—a decrease in emissions from the estimated 39% done by previous modeling. gCO 2 e/MJ) which is 46% lower than the average carbon intensity for neat gasoline.
Gasoline sales fell 8.4% (nearly 185 million less gallons) from the previous week for the seven-day period ending 28 November, bringing consumption to the lowest level for a Thanksgiving Week in 23 years, going back to 1997. Northeastern gasoline sales dropped 10.1% —Tom Kloza, executive director, IHS Markit.
GHG emissions for ATP shale (low and high cases) and conventional gasoline in grams of CO 2 e per MJ of final fuel delivered. times larger than emissions from conventionally produced gasoline. Mbbl of shale oil from 2.7 More recently, OSEC has proposed using the Petrosix process, another oil shale retorting technology.
Researchers in Viet Nam and Belgium have developed a catalytic cracking process to convert vegetable oil sludge to renewable hydrocarbon fractions. Vegetable oil sludge is a major byproduct of vegetable oil factories, and consists of triglycerides (61%), free fatty acid (37%) and impurities (2%). 2010.10.060.
Comparison of current federal subsidy to base case assumptions showing lifetime fuel savings (HomeEve charging scenario). An EPA estimate based on the Chevy Volt’s reported efficiency is also included for comparison. In all cases, HEVs and PHEVs save gasoline over conventional vehicles. Earlier post.).
Environmental impacts of gasoline and E85. In a similar way, the full breadth of impacts attributable to conventional gasoline production, such as natural resource consumption and hazardous pollutant emissions, must also be considered in order to make balanced comparisons to biofuels. Process flow diagrams for E85 and gasoline.
The majority (62%) of the plantations were located on the island of Sumatra, and more than two-thirds (69%) of all industrial plantations were developed for oil palm cultivation, with the remainder mostly being Acacia plantations for paper pulp production. Earlier post.). —Dr.
Comparison plot showing mass fractions (F m ) of chemically characterized components of lubricating oils and POA. Unburned diesel fuel makes an additional smaller contribution, with an additional smaller contribution from unburned gasoline. 3 ), and SAE-10W30 and SAE-15W40 lubricating oils. Credit: ACS, Worton et al.
The US Department of Energy (DOE) launched the “ eGallon ” as a quick and simple way for consumers to compare the costs of fueling electric vehicles vs. driving on gasoline. worth of electricity as a similar vehicle could travel on a gallon of gasoline. For example, if gasoline costs $3.60 worth of gasoline.
China’s apparent oil demand in October rose 2.9% Despite the year-over-year increase, China’s apparent oil demand in October slipped 2.5% Meanwhile, total apparent oil demand was 9.96 China’s oil product imports tumbled 22.2% China’s oil product imports tumbled 22.2% Fuel oil apparent demand in October slumped 31.4%
Methanol-to-gasoline process flow diagram. The resulting methanol would be blended with crude and transported via the trans-Alaska oil pipeline to Valdez, where it would be extracted from the oil and processed via Methanol-to-Gasoline technology into gasoline. Gasoline could be delivered from Valdez at $2.65
Toyota Motor Corporation has developed a new series of fuel-efficient gasoline engines that achieve improved thermal efficiency. liter gasoline engine in which Toyota is employing the Atkinson cycle—normally used in dedicated hybrid engines—and a compression ratio of 13.5:1. Click to enlarge. One of the engines is a 1.3-liter
Researchers at the University of Bradford (UK) are proposing a method for increasing the yield of middle distillates (such as car fuel, jet fuel, and diesel fuel) from the refinery by applying catalytic hydrotreating (HDT) to the full crude oil, rather than the now common application of hydrotreating processes to oil fractions a (i.e.,
In a new, comprehensive study, a team from Argonne National Laboratory, Stanford University and UC Davis ITS has estimated the well-to-wheels (WTW) GHG emissions of US production of gasoline and diesel sourced from Canadian oil sands. g CO 2 e/MJ for US conventional crude oil recovery. This range can be compared to ∼4.4
April saw the US produce a record 10,543,000 barrels per day (MBD) of oil, according to data from the American Petroleum Institute. Consumer gasoline demand, as measured by total motor gasoline deliveries, of 9.3 Reformulated-type gasoline, which is consumed primarily in urban areas, was flat with growth of 0.1%
Although both diesel and gasoline are made from oil, the trends in their prices do not always go in parallel. While personal driving (which uses primarily gasoline) is down greatly because of various stay-at-home mandates, commercial truck transport (which uses primarily diesel) has been substantially less affected.
Pyrolysis bio-oils are produced by the thermal decomposition of biomass by heating in the absence of oxygen at more than 500 °C; fast pyrolysis of biomass is much less expensive than biomass conversion technologies based on gasification or fermentation processes. The gasoline-range alcohols can be high-octane gasoline additives.
In terms of fuel consumption per distance driven, the change between 1973 (the year of the first oil embargo) and 1991 (from 7.75 In comparison, the change between 2008 and 2019 (from 4.59 A minor increase between 2008 and 2019 (from 21.8 gallons per 100 miles to 5.10 gallons per 100 miles to 4.50
By comparison, most other commodity indexes included in the GSCI increased by about 20%. In 2021, the energy index group made up 54% of the GSCI, and two crude oil benchmarks, West Texas Intermediate (WTI) and Brent crude oil, accounted for approximately 70% of the weighting in the energy sector index.
Virent’s BioForming platform can produce drop-in gasoline, diesel or jet fuels from plant sugars. Virent has taken another step in the gasoline certification process, successfully completing its first road fleet test organized and executed by Virent collaborator and investor Royal Dutch Shell. Source: Virent. Click to enlarge.
Researchers at the University of Wisconsin, led by Dr. Rolf Reitz, are investigating a blended dual-fuel (gasoline and diesel) concept to extend the operating range of partially premixed charge compression ignition combustion by using the varying fuel reactivity of the charge blend, which is determined in real time. Source: Rolf Reitz.
crop oils and animal fats) to non-ester biofuels—renewable fuels that are pure hydrocarbons indistinguishable from their petroleum counterparts. Soybean oil was used as the baseline feedstock for this study. Fractionation of the resulting non-ester biofuel into JP-8, naval distillate, and gasoline cuts.
An executive at Sinopec’s institute for economic and technology research predicted that China’s oil demand will increase by up to one third by 2015 as car ownership grows fast from its current low base. By way of comparison, in 2008, the US consumed approximately 967 million tonnes (7.1
In terms of fuel consumption per distance driven, the change between 1973 (the year of the first oil embargo) and 1991 (from 7.75 In comparison, the change between 2008 and 2017 (from 4.59 A minor increase between 2008 and 2017 (from 21.8 gallons per 100 miles to 5.09 gallons per 100 miles to 4.48
The oil price shocks of the 1970s led the Brazilian government to address the strain high prices were placing on its fragile economy. Brazil, the largest and most populous country in South America, was importing 80% of its oil and 40% of its foreign exchange was used to pay for that imported oil.
A BEV lacks an ICEV’s engine oil, timing belt, oxygen sensor, spark plugs and more, and the maintenance costs associated with them. After aggregating the cost components, the team calculated a lifetime TCO for comparison across vehicles of different types and attributes. cents per mile.
China’s apparent oil demand rose 4.1% Growth in demand for gasoline and LPG slowed in the month, while gasoil and jet fuel/kerosene demand saw a contraction. Meanwhile, China’s net imports of oil products soared 58.4% Meanwhile, China’s net imports of oil products soared 58.4% Apparent demand for gasoline climbed 6.5%
A) CNG light-duty cars vs. gasoline cars; (B) CNG heavy-duty vehicles vs. diesel vehicles; and (C) combined-cycle natural gas plants vs. supercritical coal plants using low-CH 4 coal. On the one hand, a shift to natural gas is promoted as climate mitigation because it has lower carbon per unit energy than coal or oil. Click to enlarge.
Shale oil production generates greenhouse gas emissions at levels similar to conventional crude oil production, according to a pair of new studies released by the US Department of Energy’s Argonne National Laboratory. These are shale formations with low permeability and must be hydraulically fractured to produce oil and gas.
announced that Express Lube of Fredericksburg, Texas, is the first US service station to sell gasoline blended with Gevo’s renewable isobutanol at the pump. Gevo anticipates this to be the first of many retail locations to offer the product as the company rolls out its isobutanol to the marina, outdoor equipment and off-road gasoline markets.
China’s apparent oil demand in December rose 5.3% China’s apparent oil demand in 2014 rose 3% from a year before to an average of 10.1 China’s apparent oil demand in 2014 rose 3% from a year before to an average of 10.1 Total oil product imports in 2014 tumbled 24.2% Exports of oil product from the country increased 4.1%
Meanwhile, wet waste feedstocks, such as animal manure and fats, oils, and greases (FOG), represent another important category of resources that could be utilized to produce MCCI bioblendstocks due to its abundant availability. gasoline liter equivalent (GLE) and $0.94/GLE Skaggs et al. demand in 2016. —Ou et al.
EPA projects advanced transmissions (6+ speeds and CVTs), gasoline direct injection (GDI) systems, and turbocharged engines will be installed on at least 15% of all MY 2013 vehicles. The majority of the emissions and fuel savings from current vehicles, EPA noted, is due to new gasoline vehicle technologies. Click to enlarge.
Neste, currently largest producer of renewable drop-in fuels (primarily diesel) with its NEXBTL platform ( earlier post ), has filed a patent ( US20150144087 ) on a gasoline composition (and the method for making it) comprising up to 20 vol% (preferably from about 10-15 vol.%), of paraffinic bio-hydrocarbons originating from the NEXBTL process.
Comparison of ISFC (@42.9 Compression ratio was set at 15:1, and the fuel used was 87 octane gasoline. For a comparison engine, Pinnacle used a 200 cc, conventional two-valve, air-cooled, carbureted model. The sleeve valves have a short heat rejection path directly to lube oil. Source: Pinnacle. Click to enlarge.
They found that electric vehicles (EVs) powered by the present European electricity mix offer a 10% to 24% decrease in global warming potential (GWP) relative to conventional diesel or gasoline vehicles assuming lifetimes of 150,000 km (93,206 miles). This has led to a general perception of EVs as an environmentally benign technology.
To reduce the variability in fuel use and exhaust emission rates related to variations in engine oil, engine oil was changed for each vehicle prior to the measurement using the first fuel. All vehicles were measured with air-conditioning on. For vehicles for which an eco-mode was available, the eco-mode was used. — Yuan et al.
Depletion of fossil energy resources [kg oil-eq.]. The program guides the interested layperson through a selection of parameters: which type of engine should be used, gasoline-burning or diesel, for example, or one powered by natural gas, a fuel cell, or a battery. Depletion of fresh water reserves [m 3 ].
Gas chromatography comparison of Conoco fuel and a Conoco-CoolPlanet blend. Cool Planet’s biogasoline blendstock is 100% compatible with pump gasoline. Often referred to as a “drop-in” fuel, reformate is an ingredient in gasoline and jet fuel that can be added during the regular refinery process. Source: Cool Planet.
Lifecycle GHG emissions of renewable gasoline from the IH 2 process (GTI RG) compared to petroleum gasoline and diesel. for GTI’s Integrated Hydropyrolysis and Hydroconversion (IH 2 ) technology, which converts biomass directly into cellulosic gasoline and diesel hydrocarbon blendstocks. Property comparison.
CO 2 emissions of the C 180 in comparison to its predecessor [t/car]. Over the entire lifecycle of the C 180, the lifecycle analysis yields a primary energy consumption of 521 gigajoules (corresponding to the energy content of around 16,000 liters of gasoline); an environmental input of approx. Source: Mercedes-Benz. Click to enlarge.
Well-to-wheel GHG estimates for palm hydrotreated renewable diesel (HRD) fuel, with and without direct LUC, and diesel fuel included to enable comparisons. The researchers examined three distinct oil recovery options: dry extraction, wet extraction, and secretion. Contribution by stage shown in the inset charts. Click to enlarge.
mpg US) (99 g/km CO 2 )—more efficient than any previous Golf with a gasoline engine. The new TSI engine also offers the highest specific torque of any large-scale production series gasoline engines: 200 N·m per liter displacement. Golf Comparisons. The turbocharged gasoline engine with its 10.5:1
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