Economical analysis of a new gas to ethylene technology

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Title: Economical analysis of a new gas to ethylene technology
Author: Abedi, Ali Abdulhamid
Abstract: Ethylene is one of the most important petrochemical intermediates and feedstocks for many different products . The motivating force of this work is to compare a new process of ethylene production developed at Texas A &M University to the most common processes . Ethylene is produced commercially using a wide variety of feedstocks ranging from ethane to heavy fuel oils . Of them , the thermal cracking of ethane and propane using a fired tubular heater is the most common process in the United States . In Europe and Japan , where natural gas is not abundant , thermal cracking of naphtha using a fired heater is the most common process . In addition to these processes ; ethylene could also be produced from crude oil by autothermic and fluidized bed techniques and from coal and heavy oils by synthesis from carbon monoxide and hydrogen . At Texas A &M University , a group of researchers developed a new process that can convert natural gas into liquids (GTL ) or to ethylene (GTE ) . This technology is a direct conversion method that does not require producing syngas . When selecting a process for ethylene production , the dominant factor is the selection of hydrocarbon feedstocks . Based upon plant capacity of 321 million pounds of ethylene per year , this study has shown that using natural gas , as a feedstock , is more economical than using ethane , propane , naphtha , and other feedstocks . Therefore , it is more economical to convert natural gas directly to ethylene than separating ethane or propane from natural gas and then converting it to ethylene . A process simulation package ProMax is used to run the GTE process ; and a software program , Capcost , is used to evaluate fixed capital costs of the GTE process . Finally , the cost index is used to update the cost of the other processes of ethylene production today .
URI: http : / /hdl .handle .net /1969 .1 /6000
Date: 2007-09-17


Economical analysis of a new gas to ethylene technology. Available electronically from http : / /hdl .handle .net /1969 .1 /6000 .

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