http://www.icis.com/icisconnect/forums/363.aspxHave your say about what's happening in the chemical industry. enCommunityServer 2008.5 SP2 (Build: 40407.4157)http://www.icis.com/icisconnect/forums/thread/2817.aspxThu, 12 Mar 2009 09:47:23 GMT8e774857-1e25-4730-bdb9-310c4492ad3b:2817Peter T0http://www.icis.com/icisconnect/forums/thread/2817.aspxhttp://www.icis.com/icisconnect/forums/commentrss.aspx?SectionID=363&PostID=2817<p>Calculating the cost of ethylene is not straight forward. You need to calculate the co-products made with the ethylene and credit them to the cost calculation. For this, you need the yield pattern for the cracker. ICIS runs a training courses and the The Next Level course (which follows the Beginner&#39;s course)&nbsp;run in Europe and the US devotes nearly half a day to the cost of production and profitability&nbsp;including an exercise that involves calculating&nbsp;an ethylene margin. The link below gives more details: <a href="http://www.icistrainingsite.com/p/2757">http://www.icistrainingsite.com/p/2757</a></p> <p>&nbsp;</p><div style="clear:both;"></div>http://www.icis.com/icisconnect/forums/thread/2805.aspxTue, 10 Mar 2009 22:49:18 GMT8e774857-1e25-4730-bdb9-310c4492ad3b:2805j4nwar0http://www.icis.com/icisconnect/forums/thread/2805.aspxhttp://www.icis.com/icisconnect/forums/commentrss.aspx?SectionID=363&PostID=2805Can anyone help me figure out how ethylene margin is calculated? If I know the cost of the main feedstock (i.e. ethane, $/gal)) and the price of the ethylene ($/lb), how do I calculate the margin from my ethylene production? I am aware that there are different plant efficiencies, etc, but let&#39;s assume a typical 500 kt olefin plan with 90% utilization. Thanks for your help!<div style="clear:both;"></div>