BioGas / RNG / LNG
BioGas, Renewable Natural Gas (RNG) and Liquid Natural Gas (LNG) must be filtered, processed, analyzed and metered on its path from production to market. At Davis & Davis we specialize in treatment and measurement equipment for these challenging applications. We have experience providing level instrumentation and engineered sampling equipment for landfill, dairy farm, pig farm and LNG applications.
Here are brief descriptions for the main renewable gas sources.
ANAEROBIC DIGESTION: Biogas is primarily produced by the biological breakdown of organic matter in the absence of oxygen—a process known as anaerobic digestion. Feed materials include biomass, manure, sewage, plants and plant waste, grease trap contents, and the organic fraction of municipal solid waste (MSW). This type of biogas is
composed of methane and carbon dioxide.
BIOMASS GASIFICATION: Another type of biogas, syngas, is created using biomass feed materials in a process known as gasification. The resulting synthesis gas is composed primarily of hydrogen, nitrogen, and carbon monoxide with trace amounts of methane. Biomass gasifiers are reactors that heat biomass in a low-oxygen environment. The gas produced can drive highly efficient devices such as turbines and fuel cells to generate electricity.
LANDFILL GAS RECOVERY: Gas recovery from landfills is a third means of producing biogas. In the U.S., over 400 landfills presently recover methane, which forms as waste decomposes in low-oxygen conditions. A landfill gas-to-energy system consists of a series of wells drilled into the landfill. A piping system connects the wells and collects the
We can provide online gas chromatograph, H2S, Total Sulfur, Moisture and Oxygen analysis for treated receipt point gas either before or after compression. Raw untreated gas can be collected via YZ composite sampling to provide before treatment laboratory analysis to monitor the effectiveness of the treatment process to meet pipeline tariff quality regulations.
Here is simple diagram put together by MUSTANG Sampling.
Here is our modular version of a skid setup to analyze raw landfill gas for Oxygen, Moisture and H2S. We use a light industrial pump/compressor to increase the zero pressure/vacuum pipeline condition to 30-50 PSIG so we can properly analyze the gas stream.
This skid was designed to fit inside an existing shelter through a standard size door frame. This skid can also be mounted outside in a warm climate with a sun shade.
We can also fabricate fully enclosed heated cabinets.
For applications requiring a fully integrated analyzer shelter we can design and build a ‘plug and play’ shelter with full electrical, engineered to meet your specific state requirements. We provide detailed documentation/data books, native 3D drawings, etc. Each system leaves the shop fully tested with calibration standards and operational gas cylinders.
We provide onsite commissioning and startup assistance along with ongoing technical support and locally stocked replacement and maintenance parts.
Tank storage plays a vital role in producing bio fuels and we can provide expertise for all your tank level measurement needs. Here is a descriptive brochure on our level capabilities. 41-184.0_renewable_energy_0
Contact us today to learn more about our solutions for your BioGas processing and custody transfer measurement needs.
ANALYZER BUILDING: Single or Multi-Room, Class 1 Div 1,2 Analyzer Shelters/CEMS Integration Packages are delivered with full electrical, tubing and testing, ready for installation and operation. We provide technical support, start-up and commissioning services with full system documentation on every project we deliver.
The Mustang® Bio-Gas Sample Conditioning System (MBGSCS) is designed for the bio-gas industry to maintain a representative sample of low pressure feed gas. For farm and agricultural waste operations renewable energy programs. REPS, renewable energy credits are available to landfill owners and farmers that are able to produce natural gas[…]
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YZ samplers are designed to deliver a representative sample of natural gas or light liquids. The DynaPak sampling system has become the industry standard in simplicity and reliability. Whether sampling condensate on an offshore platform or natural gas on shore you can have confidence the Dynapak will provide years of[…]