Chemical Engineering Practice

Accompanying the ever-increasing performance of polymerization catalysts used to produce polyethylene (PE) is a general increase in catalyst sensitivity to impurities in ethylene feed. These can impact the length and branching of polymer chains as well as interchain bonding, which in turn determine...

As the design life expiration date(about 25 years) approaches for domestic LNG storage tank, the issue of tank lifetime extension is paid more and more attention by the Korea LNG industry. Recently, Korea Gas Safety Corporation is carrying out a project for developing technologies and standards for...

The cracking furnace is the heart of the ethylene plant, consuming the most energy, adding the most value and with the potential to cause the most damage. Every aspect of the furnace is critical from the specifications through design, construction and including commissioning, start-up, operations,...

Comparative Performance Analysis™ (CPA™) benchmarking studies of the olefin industry have been conducted by HSB Solomon Associates LLC (Solomon) since 1987. This paper will highlight the results of a 16-year analysis of trends in turnaround performance by the industry. Data will be analyzed and...

AIChE 2012 Spring Conference Modeling Dynamic Heat Transfer in Piping Systems using an Enhanced ASTM C-680 Algorithm Debby Sielegar Process Engineering Specialist Bechtel Oil, Gas & Chemicals, Inc. David Messersmith (co-author) LNG Technology Manager Bechtel Oil, Gas & Chemicals, Inc. ASTM...

Energy efficiency has become an important theme in the process industries, and many companies have implemented sophisticated strategies to improve both the design and the operation of their plants. However, many efficiency improvements are possible simply by doing basic things right. This article...

The formation of a flammable vapor cloud following a spill of cryogenic liquids, such as ammonia and LNG (liquefied natural gas), on a ground or water includes significant toxic, fire or explosion hazards. The ability to predict the consequences of such an event is crucial to perform proper risk...

A panel of industry experts will discuss topics of interest to Ethylene Producers with respect to turnaround excellence. Topics will be solicited from session attendees during the paper portion of the session. Prepared discussion topics will include: How are late scope changes handled, Is there...

Research at CanmetENERGY is investigating the impacts and benefits of co-processing biomass derived feedstocks with petroleum feeds (including opportunity crudes such as bitumen and heavy oils). It is important to fully understand the co-processing of these two feeds because in many developed...

In 2006, the United States EPA mandated the use of 15 ppmw ultra-low sulfur diesel (ULSD) for on-road diesel fuel. At that time several refiners either revamped existing facilities or constructed grass roots facilities to meet the specification. Some facilities did not implement ULSD process...