Many organic-rich rocks are major sources of oil and gas in sedimentary basins presumably through high-temperature thermal cracking. This view was brought into question with recent reports of marine shales generating catalytic gas in the laboratory at 50◦C, 300◦C below thermal-cracking temperatures. Gas forms under natural conditions without artificial stimulation. Compositions of methane, etha...

A coupled reactor/furnace simulation has been conducted for a 100 kt/a SL-II naphtha cracking furnace containing both long-flame and radiation burners. The computational fluid dynamics approach was used to simulate the flow, combustion and radiative heat transfer in the furnace. The software packages COILSIM1D and SimCO were used to account for the cracking process in the reactor coils. The sim...

A mobile, low-field nuclear magnetic resonance (NMR) sensor for onboard, inline detection of catalytic fines in fuel oil in the shipping industry is presented as an alternative to onshore laboratory measurements. Catalytic fines (called cat fines) are aluminosilicate zeolite catalysts utilized in the oil cracking process at refineries. When present in fuel oil, cat fines cause abrasive wear of ...

0026-2714/$ see front matter Crown Copyright 2 doi:10.1016/j.microrel.2010.03.007 * Corresponding author. E-mail address: [email protected] (C.-P. Wang). The investigation explores the factors that influence the long-term performance of high-power 1 Wwhite light emitting diodes (LEDs). LEDs underwent an aging test in which they were exposed to various temperatures and electrical currents, to i...

Holmes and Shuler [1] recently found that significant internal heating occurs during the cyclic loading of fibre-reinforced ceramics. In their investigation, conducted with cross-ply carbon fibre/SiC matrix composites (hereafter referred to as Cf/SiC), it was observed that the extent of internal heating was strongly influenced by the peak fatigue stress and loading frequency. For example, durin...

Abstract:This paper addresses the short-term scheduling problem for the ethylene cracking process with feedstocks and energy constraints. The cracking production of ethylene is a process with units that have decaying performance, requiring periodic cleanup to restore their performance. Under the condition of limited feedstocks, the production operating mode of the cracking furnaces is to keep y...

Catalytic thermolysis is considered to be an effective process for viscosity reduction, the conversion of high-molecular components oil (resins and asphaltenes) into light hydrocarbons, desulfurization hydrocarbons. In this paper, we conducted non-catalytic catalytic a heavy sample isolated from Ashalcha field (Tatarstan, Russia) at temperature 250 °C. Fullerene C60 nanoparticles were applied p...

nanotechnology has the potential to introduce revolutionary changes to several areas of oil and gasindustry such as exploration, production, enhanced oil recovery, and refining. in this paper, the effectof different concentrations of fe2o3 nanoparticles as a catalyst on the heavy oil viscosity at varioustemperatures is studied. furthermore, the effect of a mixture of fe2o3 nanoparticles and ste...

As the production process continues to be refined, biomass pyrolysis oils are increasingly being considered as potentially feasible renewable fuels. Combustion of pyrolysis oils in diesel engines has been scarcely studied, and the few studies which have been performed indicate that these fuels exhibit excessively long ignition delay, rendering them dependant on auxiliary ignition sources for di...