Biogas Stream Equipment

Flame protection, condensate management, pressure control, and monitoring for biogas piping systems.

What It Is & How It Works

Biogas stream equipment encompasses the mechanical devices installed within biogas and digester gas piping between the anaerobic digester and downstream utilization equipment, including CHP engines, flares, gas upgrading systems, and boilers. These devices protect the piping system from flame propagation, remove condensate and solids from the gas stream, regulate operating pressure, and provide local pressure visibility at critical points.

Digester gas is saturated with water vapor that condenses as it cools along the piping run. Drip traps, available in manual, automatic, and electrically actuated configurations, remove condensate at low points before it blocks flow or damages downstream equipment. Sediment traps and condensate accumulators handle solids and collected liquids ahead of discharge.

Pressure regulators maintain the low positive pressure digesters require while meeting downstream inlet specifications. Thermal valves isolate the gas path on temperature excursion, and check valves prevent reverse flow. Flame arresters, in inline deflagration and detonation configurations, interrupt flame propagation through the piping at severity levels matched to pipe geometry and gas composition. Well-type and U-tube manometers provide local pressure indication without electrical connections, supporting operator rounds in wet, corrosive digester environments.

Flame Protection vs. Condensate Handling vs. Pressure Control

Biogas stream equipment operates as a coordinated system across four device roles, and most biogas piping installations require devices from more than one category. Flame protection devices address combustion safety and are selected based on hazard severity. Condensate and solids handling devices address the physical consequence of water vapor in the gas stream. Pressure control devices maintain operating conditions within the limits required by the digester and downstream equipment. Monitoring devices provide operational visibility without requiring process connections or electrical instrumentation. Selecting only one category while leaving others unaddressed is a common system design error. Shand & Jurs Biogas provides all four device categories from a single source to support coordinated system specification.

When to Specify Biogas Stream Equipment

Biogas stream equipment is specified when a biogas piping system between the digester and downstream utilization equipment requires coordinated flame protection, condensate management, pressure control, and monitoring:

Municipal Wastewater Treatment Plants Digester gas piping systems between primary and secondary anaerobic digesters and CHP engines, flares, or gas conditioning systems, where condensate management and flame protection are continuous operational requirements.
Industrial and Food Waste Biogas Facilities On-farm and food processing digesters operating biogas piping systems that require inline flame protection, pressure regulation, and condensate removal before gas reaches utilization equipment.
Biogas-to-Energy and CHP Applications CHP engine inlet systems where gas quality, moisture content, pressure, and solids, must be controlled within tight limits to protect engine fuel systems and maintain generation efficiency.
Biogas Flaring Systems Flare inlet piping requiring inline flame protection and condensate removal to ensure reliable ignition and prevent liquid carry-over into the flare stack.
Biogas Upgrading and Injection Systems Gas upgrading and biomethane injection skids where inlet pressure must be regulated and moisture and solids removed before gas enters compressors, membranes, or pressure swing adsorption units.
Facilities Requiring Remote Condensate Management Multi-digester or large-scale facilities where manual drip trap rounds are operationally impractical and electrically actuated or automatic drainage systems are required.

Why Shand & Jurs Biogas Stream Equipment Excels

Biogas Piping Systems Requiring Coordinated Multi-Device Protection

A single biogas header may require flame arresters, drip traps, pressure regulators, and manometers in a coordinated package. Shand & Jurs Biogas supplies all four device functions from one source, simplifying specification, procurement, and system commissioning.

Continuous Biogas and Digester Gas Service

All devices are engineered for wet, corrosive, and sulfide-containing gas streams that degrade standard pipeline hardware. Metallic construction and biogas-compatible seals are standard across the product family.

Condensate Drainage Options Matched to Operating Model

Manual, automatic, and electrically actuated drip trap configurations allow facilities to match drainage method to available operator resources, from simple manual drains for smaller systems to fully automated, remotely monitored drainage for large multi-digester facilities.

Scalable Flame Protection Across Deflagration and Detonation Risk

Two flame arrester series, inline deflagration (94406, 94407) and detonation (94311–94314), cover the full range of flame hazard severity in biogas systems, from protected short pipe runs to long piping with detonation transition risk.

Local Pressure Monitoring Without Electrical Infrastructure

Well-type and U-tube manometers provide reliable local pressure indication in wet digester environments without electrical connections, supporting operator rounds and troubleshooting at locations where powered instrumentation is impractical.

Centralized Drip Trap Control for Large Facilities

The 9710XP local control panel provides coordinated control of multiple electrically actuated drip traps from a single panel, reducing the control system integration burden for facilities with extensive condensate management requirements.