Q578. Do dehydrators which are used to dry a liquid stream meet the definition of dehydrator (which states that units are used to dry a natural gas -- i.e., gaseous -- stream)? If a dehydrator which dries a liquid stream is considered a "dehydrator", how does the 0.4 MMSCFD threshold apply to that dehydrator?
A578. No, per §98.6, a "dehydrator is" a device in which "a liquid absorbent (including desiccant, ethylene glycol, diethylene glycol, or triethylene glycol) directly contacts a natural gas stream to absorb water vapor."
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Source: EPA, Frequently Asked Questions, Petroleum and Natural Gas Systems, July 2011, http://www.epa.gov/climatechange/emissions/downloads11/documents/Subpart-W-additional-faq.pdf
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Approval / Publishing History: Version 1, Approved by M. Eaddy, 6/4/2012
Expiration : none
Relevant Subpart: W, Dehydrators
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