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Petrochemicals

Design, Installation, and Monitoring of ID Fans for Ethylene Furnaces

Mar 13, 2011
Neal D. Boyd
Reliable operation of induced-draft fans on ethylene furnaces is critical to maintaining plant output capacity. Achieving this requires close attention to numerous issues during specification, design, installation, and monitoring in operation. This paper will examine recommended practice pertaining...

Sulfur Myths - What We Know and What We Do Not Know

Mar 13, 2011
Mark Brayden, Vijay Srinivas
The use of organosulfur compounds in steam cracking furnaces to produce ethylene and propylene is a universal practice to essentially prevent carbon monoxide (CO) and minimize coke formation. While there is agreement that this decreases the level of CO in the product gas, there is seemingly...

Compressor Train Performance - Evaluation and Monitoring (Part 1)

Mar 13, 2011
Satoshi Hata
Utilization of Equipment Health Management system tools has allowed end users to monitor, protect and manage the critical rotating machinery in an Ethylene Plant. The systematic monitoring and evaluation of turbomachinery is an important diagnostic tool in the execution of a long-term maintenance...

Confusion and Anxiety: The Very Latest on the Re-Revised Ozone Standard

Mar 13, 2011
Steven Ramsey
In May 2008, the EPA established new 8-hour primary and secondary ozone standards equal to 0.075 ppm. This represented a significant tightening over the previous 0.08 ppm 8-hour standard. However, a little more than a year later, in September 2009, EPA announced that it was going to reconsider the...

Green House Gas Reporting In the Ethylene Manufacturing Sector

Mar 13, 2011
Valerie Barth
The Greenhouse Gas (GHG) Mandatory Reporting rule (MRR), codified in Part 98 of Title 40 of the Code of Federal Regulations, requires numerous manufacturing sectors including ethylene manufacturing plants in the U.S. to report actual GHG emissions from applicable facilities starting from reporting...

Impacts to the Ethylene Supply Chain from a Hurricane Disruption

Mar 24, 2010
Amy Sun
Analysis of chemical supply chains is an inherently complex task, given the dependence of these supply chains on multiple infrastructure systems (e.g., the petroleum sector, transportation, etc.). This effort requires data and information at various levels of resolution, ranging from network-level...

Fouling Mitigation of Quench Tower System

Mar 24, 2010
Holger Schmigalle
Gas cracking plants are especially sensitive to fouling in the quench water section. One main fouling mechanism in the quench tower and in the related equipment is the accumulation of material with a high pour point. Fouling can be avoided or at least significantly reduced if the pour point of the...

Silencing Deethanizer Reboiler Condensate Drum Hydraulic Hammer

Mar 24, 2010
Henry Z. Kister
A deethanizer reboiler condensate drum experienced hydraulic hammering when the reboiler operated at lower steam loads and when the column loads were reduced quickly. The condensate drum level indicator was unreliable and insensitive to the variations in level control valve opening. Condensate drum...

War Strategies to Guarantee Peace Time in a Primary Fractionator

Mar 24, 2010
Emerentino B. Quadro
Braskem is a Brazilian petrochemicals manufacturer, producing monomers, resins and chemicals specialties. Its ethylene capacity is 2,500 Kty, distributed in four Olefins plants, all based on naphtha steam cracking. This paper reports a high rate of fouling in the Primary Fractionator, resulting in...

“Compression System Check Valve Failure Hazards”

Mar 24, 2010
Craig R. Thompson, Ralph King
Catastrophic equipment failure due to overpressure can potentially occur in the event of compression system discharge, interstage, and/or suction check valve failure, coincident with compressor shutdown. Depending on system design and application, overpressure values approaching or exceeding 300%...

Ultra Low NOx Burner Performance in an Ethylene Cracking Furnace

Mar 23, 2010
Patrick C. Riley
In recent years, the global tightening of emissions standards has created numerous challenges for the owners and operators of ethylene cracking furnaces. Achieving ultra-low NOx emission levels in ethylene cracking furnaces, where the operating temperatures routinely range between 2000°F to 2200°F...

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