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Title: Odorant Transfer and Delivery Systems
Author: JURAJ STRMEN
Source: 2019 Western Gas Measurement Short Course
Year Published: 2019
Abstract: Natural gas odorant, often referred to as mercaptan odorant, is a liquid that is added to natural gas to impart a distinct sulfur smell to the gas that is otherwise odorless. There are about a dozen different blends of natural gas odorants used in the US. Most of them are based on two main components: the odorant and the antifreeze agent. The odorant portion can be either mercaptan- or thiophane-based. The antifreeze agent is typically isopropyl mercaptan or a sulfide such as dimethyl sulfide. In the US, odorant liquids are manufactured in refineries and transported by truck or DOT tanks to client sites. At the client site, transport tanks are offloaded to bulk odorant storage tanks. Typical refill frequency for bulk odorant storage tanks is once per year.

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