The Mustang Waste Gas Skid and Mustang Dehydration Skid are two essential, highly engineered, comprehensive skid systems used in the production of Renewable Natural Gas (RNG) from waste gas (biogas). Biogas is typically produced from wastewater treatment plants, landfills, dairy cattle farms, and swine farms. These skids play a critical role in processing waste gas to achieve the required 98% methane purity necessary for compliance with RNG credit specifications.
The Mustang Dehydration Skid is a comprehensive tower-style dehydration system designed to remove free liquids and moisture from waste gas streams, particularly those originating from dairy farms, landfills, wastewater treatment plants, and other anaerobic digester sources. These gas streams are naturally saturated with moisture and must be dehydrated before being upgraded to Renewable Natural Gas (RNG).
Dehydration is a critical step in the process, both operationally and analytically. Removing water content prevents free liquids from entering the pipeline, protects downstream equipment, and ensures accurate measurement of hydrocarbons without interference from entrained or free liquids. The dehydration process effectively cleans the raw biogas while preserving the hydrocarbon content required for proper analysis.
As raw biogas enters the dehydration skid, it flows through stainless-steel piping into the dehydration tower, where moisture and liquids are removed. After dehydration, the gas passes through a series of columns and transitions to carbon steel piping at low pressure, typically around 5 psig. Because raw biogas is often available at very low pressure, additional pressure boosting is frequently required to deliver the gas to downstream analytical devices and processing equipment.