Petrochemicals

Today, there is no excuse for not getting five years or more on the run length of refinery preheat exchangers without the need for cleaning. Among the many tools available for fouling mitigation of preheat exchangers, the most overlooked ones involve determining and eliminating the cause. Almost...

Braskem, a Brazilian player among petrochemical manufacturers, produces monomers, resins and chemicals specialties. The overall Ethylene capacity is 3,600 KTA, distributed in six Olefins plants. Naphtha is the main raw material of the petrochemical and plastic productive chain in Brazil, followed...

Fouling behaviour is a crucial consideration in the selection and design of heat exchangers to be used in refinery pre-heat trains. We make the following observations regarding fouling associated with the heating of crude oil: 1. The fouling rate decreases with increase in wall shear stress 2. The...

CHALLENGES IN USING REFINERY FUEL GAS FEEDSTOCK FOR STEAM REFORMING BASED HYDROGEN PLANT Peter V Broadhurst & Graham Hinton (Johnson Matthey Catalysts, PO Box 1, Belasis Avenue, Billingham, Cleveland TS23 1LB, UK) ABSTRACT Operators of steam reforming based hydrogen plants are seeking feedstock...

CHEMISTRY AND PERFORMANCE OF DIESEL FUELS DERIVED FROM OIL SANDS AND OIL SHALE FUELS Bruce G. Bunting In this study, a series of diesel fuels derived from oil sands crude and oil shale crude were evaluated for chemistry and performance in an advanced combustion engine utilizing HCCI. In most cases...

Predicting Operating Regimes in Heavy Gas Oil Hydrotreating Reactors Jinwen Chen and Mugurel Munteanu CanmetENERGY, Natural Resources Canada One Oil Patch Drive, Devon, AB, T9G 1A8, Canada Hydrotreating (HDT) or mild hydrocracking (HDC) of heavy gas oil or vacuum gas oil is an important step in...

Abstract: The conversion of methanol to olefins (MTO) is a means to produce ethylene and propylene from feedstock derived from sources other than crude oil or condensates. Methanol is widely produced from natural gas or coal at locations with abundant reserves. By utilizing methanol derived from...

Problem decomposition is the preferred approach for the design of heat recovery networks where a plant has many hot and cold streams. In this approach the “flowsheet” is divided up into distinct zones (sometimes referred to as zones of integrity) and heat recovery networks are developed for these...

The site utility system provides the heating, cooling load along with power production for the processes on the total site. Low-grade heat is available in large amount across the process industry from temperatures of 30 o C to 250 o C as gases (e.g. flue gas) and/or liquids (e.g. cooling water)...

Abstract: Corrosion, blockage, fouling, and mechanical/thermal overload are the key degradation mechanisms that operators need to control to avoid premature failure of their aluminum plate fin heat exchangers. The paper will describe these degradation mechanisms as well as how to incorporate finite...