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Shand & Jurs 97301 Waste Gas Burner

Ground-Level Ignition Biogas Burner

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Shand & Jurs 97301 Waste Gas Burner

For anaerobic digester operators, landfill gas managers, and municipal wastewater engineers, the Shand & Jurs 97301 Waste Gas Burner combusts excess biogas when system pressure exceeds utilization capacity, keeping digester and gas-holder pressure within safe operating limits.

Unlike stack-mounted pilot configurations that require elevated work to inspect or service ignition hardware, the 97301 uses a ground-level venturi pilot system so ignition components can be accessed at grade rather than at the flame tip.

A stoichiometric pilot maintains proper air-to-fuel mixture across wide methane concentration, pressure, and saturated moisture, while the cyclonic swirl flare tip holds flame retention across variable gas quality. The wind-protected tip supports combustion in wind speeds up to 150 mph.

The 97301 suits anaerobic digesters, landfill gas systems, lagoon digesters, municipal wastewater treatment, biogas processing plants, and engine bypass disposal — aligned with NFPA 820 biogas-handling expectations and fitting within EPA 40 CFR Part 60 Subpart WWW / Cf monitoring programs. The 97301T variant adds a touchscreen panel with identical combustion performance.

Shand & Jurs 97301
Shand & Jurs 97301 Waste Gas Burner
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Features

Ground-Level Venturi Pilot

Inspirating venturi ignition at grade allows safe inspection and service without elevated pilot maintenance or work-at-height procedures.

Stoichiometric Pilot Stability

Holds proper air-fuel ratio across wide pressure and BTU fluctuations typical of saturated wet biogas, maintaining reliable ignition.

Cyclonic Swirl Flare Tip

Swirl inducers drive intense air-fuel mixing at the tip, supporting efficient combustion and stable flame retention across variable gas quality.

Wind-Shrouded Combustion Tip

Induces combustion air and shields the flame front, maintaining stable combustion in outdoor wind speeds up to 150 mph.

Solid-State Control System

Sequencing logic drives flame-proven and alarm contact outputs, supporting SCADA tie-in and automated unattended operation.

Touchscreen Option (97301T)

Optional touchscreen control panel provides local operator interface and configuration without altering underlying combustion performance.

Applications

  • Anaerobic Digesters: Prevents digester overpressure during production surges, combusting excess methane before uncontrolled release through relief hatches or emergency vents.
  • Landfill Gas Systems: Destroys collected landfill gas when engine or recovery demand drops, supporting gas-collection programs and reducing fugitive methane release.
  • Lagoon Digesters: Disposes of biogas from covered lagoon digesters where operator access for pilot service must happen safely at grade, not on an elevated stack.
  • Municipal Wastewater Treatment: Handles sludge-digester biogas at POTW sites where ground-level maintenance access simplifies service and reduces technician work-at-height exposure.
  • Biogas Processing Plants: Supports upstream combustion of off-spec or surplus biogas ahead of upgrading equipment, preserving plant pressure stability during upset or outage conditions.
  • Engine Bypass Disposal: Combusts surplus gas when generator engines are offline for maintenance, keeping the digester producing while maintaining process pressure stability.
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Specifications

Parameter

Specification

Device Type

Ground-level ignition biogas waste gas burner (candlestick flare)

Sizes

2″, 3″, 4″, 6″, 8″, 10″, 12″

Capacity Range

4,000 – 218,600 ft³/hr

Turndown

10:1 (typical)

Stack Burner Connection

ANSI 150 lb. Raised Face Flange

Wind Rating

Up to 150 mph

Biogas Composition

50–70% CH₄ with CO₂ balance and trace gases

Moisture Content

Saturated (100% humidity)

Pilot Gas

Natural gas, propane, or waste gas (≥500 BTU/ft³)

Pilot Gas Pressure

4″–30″ W.C. (low pressure) or 1–30 PSIG (high pressure)

Pilot Operation

Continuous while burning, intermittent, or 24/7 standing pilot

Power Requirements

120 VAC, 10 A standard; 220 VAC optional

Controller Temperature Range

−20°F to 150°F

Control Modes

Manual start, Remote start, Pressure Transmitter, or Pressure-switch start

Venturi Material

347 Stainless Steel

Thermocouple

Inconel with Type K wiring

Control Box

NEMA 4, NEMA 4X Stainless Steel, or NEMA 7 Aluminum – UL508A available

Stack and Shroud Material

304L Stainless Steel (316L optional)

Burner Assembly

Stainless Steel (316L optional)

Piping Material

304L Stainless Steel (316L optional)

Pilot Components

316 Stainless Steel

Variant

97301T adds touchscreen panel; identical combustion performance

Options

Touchscreen (97301T); continuous or intermittent pilot; NEMA 7 explosion-proof enclosure; 316 SS piping and fittings; remote, pressure transmitter, or pressure-switch start; weather hood and stand

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If you have questions not covered here, please contact the Cognesense support team for assistance.

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What is the difference between the 97300 and the 97301?

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Both are atmospheric candlestick biogas burners with identical combustion performance. The 97300 uses stack-mounted ignition, which positions the pilot at the flame tip. The 97301 uses a ground-level venturi pilot so ignition hardware can be inspected and serviced from grade. Choose ground-level when work-at-height access to the pilot is a safety or maintenance concern.

What is a ground-level venturi pilot, and why does it matter?

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A venturi pilot uses an inspirating nozzle to draw combustion air and fuel into the correct mixture at grade. The flame front then runs up a pilot tube to light the main burner at the stack tip. Because the ignition electrode and fuel train stay at ground level, technicians can inspect and service the pilot from a standing position rather than climbing the stack — which simplifies maintenance and improves technician safety.

What destruction efficiency does an open candlestick burner provide?

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The 97301 is an open atmospheric flare rather than an enclosed combustor, so destruction efficiency is not site-rated on the datasheet. If a rated destruction efficiency is required for permit compliance (for example under EPA 40 CFR Part 60 Subpart WWW/Cf monitoring programs or similar state rules), specify the 97311 Enclosed Waste Gas Burner, which is rated at minimum 99% methane destruction with measured NOx and CO limits.

Can the 97301 operate unattended?

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Yes. Control modes include manual, remote, pressure transmitter, and pressure-switch start, so the burner activates automatically when upstream pressure crosses a setpoint. The solid-state controller provides flame-proven and alarm contact outputs for SCADA tie-in. The 97301T variant adds a local touchscreen for additional configuration and diagnostic visibility.

How wet can the biogas be?

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The 97301 is designed for saturated biogas at 100% humidity with 50–70% CH₄. The stoichiometric pilot sustains ignition across that moisture and BTU range without requiring upstream gas drying or conditioning, matching typical digester and landfill gas conditions.

Is it suitable for hazardous-area installations?

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An explosion-proof NEMA 7 control enclosure is available as an option for installations in classified hazardous locations. Standard enclosures are NEMA 4 or NEMA 4X stainless steel, with UL508A panels available on request.

Where does the 97301 fit regulatory-wise?

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The 97301 supports biogas-handling architecture aligned with NFPA 820 expectations for wastewater and digester facilities, fits within monitoring and destruction programs that reference EPA 40 CFR Part 60 Subpart WWW/Cf and 40 CFR Part 63 MACT, and can be paired with emissions monitoring from Sonitus Systems for MCERTS-aligned reporting. Final compliance is determined at the site by the owner-operator and the permitting authority.

Summary

With over a century of tank-safety heritage inside Cognesense, the Shand & Jurs 97301 Waste Gas Burner is chosen when excess biogas must be safely destroyed and ignition hardware must remain accessible at grade. Its ground-level venturi pilot, stoichiometric stability, and cyclonic swirl flare tip sustain combustion of wet, variable-BTU methane at digesters, landfill gas sites, and municipal wastewater plants. For biogas and wastewater facilities, it is trusted wherever you need to measure, monitor, and protect what matters most.

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