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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Application Guide: Landfill/Digester Gas Use with the Capstone MicroTurbine Hydrogen sulfide (H2S) is normally present in biogas, and is preferentially absorbed in graphite media. Sites with high H2S content in the biogas may require more extensive fuel treatment systems (possibly including separate H2S removal) to ensure complete removal of siloxanes with reasonable run lengths between graphite media changes. The Capstone installer or end-user is responsible for the fuel delivery system, including the selection, design, and operation of the siloxane removal system. Materials of Construction Concerns Biogas is sour gas, containing H2S in the 100 to 10,000 ppm range. High CO2 content makes it acidic as well. Biogas condensate is a foul-smelling, noxious material that contains some difficult-to-handle compounds. Stainless steel, plastic, and aluminum are the preferred materials of construction. Parts made of yellow metals, such as brass valves and copper heat exchanger tubes are inappropriate. Carbon steel will also eventually corrode, leaving byproducts that can clog and damage other equipment. Resources These resources have hardware that may be appropriate for biogas applications: Refrigerated Dryers & Chillers: Company: Contact Information: Company: Contact Information: Pneumatech Titus A. Mathews Phone - (262) 658-4300 Fax - (262) 658-1945 Email - tmathews@pneumatech.com Web Page - http://www.pneumatech.com/ Q-Air California Richard Walsh Phone - (562) 906-8687 Fax - (562) 946-0327 Fuel Compressors (Fuel Gas Boosters): Company: Contact Information: CompAir Gavin Monn Phone - (937) 498-2565 Fax - (937) 492-3811 Email - gavin.monn@compair.com Web Page - http://www.compair.com/ 480002-001 Rev C (February 2004) Page 14 of 16 This information is proprietary to Capstone Turbine Corporation. Neither this document nor the information contained herein shall be copied, disclosed to others, or used for any purposes other than the specific purpose for which this document was delivered. Capstone reserves the right to change or modify without notice, the design, the equipment ratings, and/or the contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.PDF Image | Application Guide Landfill/Digester Gas Use with the Capstone MicroTurbine
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