Petrochemicals

New Process for Natural Gas Liquid (NGL) and Olefins Recovery From Low Pressure off-Gas Generated In Refineries and Petrochemical Plants

Mar 15, 2011

Rajeev Nanda

There are various NGL(Natural Gas Liquid) recovery units in North America which are designed to recover olefins and NGL components like ethane, propane, butanes etc by processing the off-gas from various sources like the refinery or Petrochemicals Complex. There is an increased demand to install...

Challenges In Using Refinery Fuel Gas Feedstock for Steam Reforming Based Hydrogen Plants

Mar 15, 2011

Peter V. Broadhurst

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...

Introductory Remarks

Mar 15, 2011

Michael J. Tallman

Wastewater Treatment for Refineries Using Canadian Tar Sands SAGD Crude as Feed Stock

Mar 15, 2011

Rafique Janjua

Refineries using Canadian Crude as feed stock are experiencing high emulsion wastewater from Desalter mud wash operation. This waste is high in COD /BOD loading and will exert shock to the aeration system by scavenging dissolved oxygen and resulting in misoperation and NPDES exceedences. Emulsion...

Operational Inputs Into the Mechanical Integrity Program

Mar 15, 2011

F. Russ Davis

A predictive mechanical integrity (MI) program is based on the following: * Damage mechanisms that affect process equipment. * Rate at which degradation progresses. * Ability of the inspection group to identify and correct equipment damage before equipment failure. Operational temperature, pressure...

Practices to Mitigate NOx Risk In Cryogenic Section of Ethylene Plants

Mar 15, 2011

Jennifer L. Bancroft

In May 2010 the Ethylene Producers Committee NOx Safety Sub-Committee sponsored a discussion on practices to mitigate NOx risk in the cryogenic section of ethylene plants. The meeting was attended by representatives of 10 ethylene producers, 4 ethylene contractors and other contractors, 2 additive...

World Light Olefins Markets Outlook: Impact of Changing Energy and Feedstock Market Dynamics on Regional Olefins Markets

Mar 15, 2011

Mark Eramo

Underlying feedstock prices that derive from either natural gas or crude oil represent a high percentage of the operating expense related to the production of ethylene for a vast majority of the global ethylene market. Historically, while steam crackers in West Europe and Asia are mainly naphtha-...

Advanced Hydrogen Management : More Than a Balancing Act

Mar 15, 2011

Sanjiv Ratan

Modern high complexity refining landscape involves increasing proportion of “opportunity crude” processing and widened bottom-of-the-barrel strategies, which together with ever stringent ‘clean fuels’ requirements has led to extensive need for hydrogen and its optimization in the refinery. This in...

Preparation of Perovskite-Based Catalysts and Fuel Injection System for Diesel Reforming

Mar 15, 2011

Yong-Gun Shul

Autothermal reforming processes of hydrocarbon liquids such as diesel fuels are spotlighted as methods to produce hydrogen for Fuel cell. However, the use of higher hydrocarbons as feedstocks for hydrogen production causes some problems which increase the catalyst deactivation by the carbon...

Enhance Cracked Gas Compressor Reliability with Novel Antifoulant Technology

Mar 15, 2011

P. N. Ramaswamy

Enhance Cracked Gas Compressor Reliability with Novel Antifoulant Technology It is widely known that there is a potential for fouling in Cracked Gas Compressors within Ethylene plants. Gas crackers have generally had a higher fouling potential than liquid crackers due to the lack of aromatic...

Practical PID Control: Use Filters for Better Disturbance Rejection and Setpoint Tracking

Mar 15, 2011

Patrick P. Thorpe

Many of the practical problems in achieving high performance feedback control for challenging applications have been addressed by modifications to the basic PID control law. These modifications include set-point filters that allow both load rejection and set-point following objectives to be...

The Importance of Carbon and Hydrogen Management In the Development of Thermochemical Production of Biofuels

Mar 15, 2011

Richard G. Mallinson

Biomass has the potential to supply significant quantities of transportation fuels as increasing worldwide demand will place significant pressure on the supply. In the US, increasing imports of energy could make any imbalance especially acute, as has been demonstrated in the past. Additionally,...

Consequences of High-Pressure Tube Ruptures In Low-Pressure Liquid-Filled Shell Heat Exchangers

Mar 15, 2011

Claire J. Ennis

Shell-tube type heat exchangers are often used to exchange heat between a high pressure fluid and a low pressure fluid, and the pressure difference between the two fluids could be significantly high. In the event of a partial- or full-rupture of a tube, a problem may arise in that a transient...

Thoughts about Safety, Staying at Zero

Mar 15, 2011

Rendell Newton

Perfect safety records and perfect environmental records are an “inalienable right”, given to us not by governments, companies, or others. It is a right we give ourselves. It takes different skills and thinking to stay at zero recordable incidents than it does to get to zero recordable incidents...

Inferential Monitoring & Optimization of Crude Units Via Hybrid Models

Mar 15, 2011

Vladimir Mahalec

Refinery crude units often process variety of feedstocks. If properties of the feed entering the crude unit are not precisely known, it is difficult to predict how changes in the tower operating conditions will affect properties of the products. Similarly, if on-line analyzers are not available, it...

Flare Minimization Via Dynamic Simulation

Mar 15, 2011

Kuyen Li

Flaring in chemical process industry (CPI) is an important method to protect equipment and personnel safety during the process upset and the chemical plant turnaround. However, excessive flaring emits lots of carbon dioxide as well as air pollutants, which cause negative environmental and social...

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