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Title: Fundamentals Of Ethylene Measurement
Author: Dennis L. Casto
Source: 1992 American School of Gas Measurement Technology
Year Published: 1992
Abstract: Every year 40,000,000,000 pounds of ethylene are produced in the United States with a value of 9,223 billion. This is roughly equal to 25 billion cubic feet/day of natural gas sales or 1,200,00 bbls/day of crude oil sales. Like oil and gas, ethylene is measured several times before its final consumption, therefore the above quoted values only give a glimpse into how much ethylene is measured daily. In its early years, ethylene was transferred and measured like natural gas. Low pressure (less than 600 psig) pipelines moved it from production units to the consumers. Measurement was handled on a cubic foot basis, like natural gas using mechanical charts. Because the consuming units converted the ethylene to other forms, hke polyethylene or glycols, it was hard to calculate plant efficiencies using standard gas measurements system as the basis. Therefore, the consuming units relied on a mass balance and all volumes were converted to pounds.

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