Sulfur-Recovery Analyzers

Brimstone™ Sulfur-Recovery (SO2) Analyzers

Galvanic is well known as the leader in process analyzers used to optimize sulfur-recovery units. We put 25 years of applications know-how and engineering prowess into the rugged, user-friendly design of the UV-spectrophotometer-based Brimstone analyzer line.

The Brimstone family includes a full line of analyzers designed to assure quality, efficiency, and compliance throughout the entire sulfur-recovery process: an acid gas analyzer to assess the inlet stream, a tail-gas analyzer to control air demand during the Claus process, a pit-gas analyzer to optimize and monitor the captured sulfur during the process, and a continuous emissions monitor to assure that stack gas complies with environmental regulations. Enhanced CCD UV spectroscopy delivers extremely fast, accurate results. Engineered for low-maintenance performance with no moving parts, Galvanic’s Brimstone analyzers free up operators to focus on other critical functions.


One-of- a-Kind Tail and Pit Gas Analyzer; with H2S, SO2, CS2 and COS monitoring capabilities

The Brimstone is a unique tail & pit gas analyzer that monitors H2S, SO2, CS2 and COS and is capable of direct coupling to the process. Direct coupling provides the Brimstone with the ability to control sulfur vapor removal more efficiently. Galvanic’s proprietary probe design eliminates plugging problems associated with heated transfer lines. In addition, the Brimstone uses Chemometrics to measure all four key components; H2S, SO2, CS2 and COS simultaneously. This is a superior method because it measures absorption at 256 points versus the standard single point analysis. 

As the only tail & pit gas analyzer with these combined capabilities and features, the Brimstone is a truly exceptional and innovative product that provides unique process analysis in sulfur-recovery.

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  • Simple modular and rugged design with no optical filters and no moving parts delivers reliable, low-maintenance operation with minimal downtime
  • Intuitive graphic display and automatic performance with auto calibration interval timing enables completely hands-off operation
  • Advanced internal startup and operational diagnostics
  • Web-based password-protected user interface allows full operational & diagnostic control from remote locations
  • Near-instantaneous analysis-response times with total system response of < 10 seconds enables fast process control
  • UV absorption method with enhanced 2048 pixel CCD delivers the utmost in accurate determinations

Selected Industries & Applications

Natural Gas Processing
  • Claus process
  • NG sweetening
  • Stack emission
  • Sulfur recovery − H2S in acid gas feed
  • Sulfur Recovery − H2S/SO2 /COS/CS2 ratio – air demand
  • Sulfur Recovery − H2S/SO2 in sulfur pit headspace
  • Sulfur Recovery − SO2 in stack
Oil & Refining / Petrochemical
  • Sulfur recovery − H2S in acid gas feed
  • Sulfur Recovery − H2S/SO2 /COS/CS2 ratio – air demand
  • Sulfur Recovery − H2S/SO2 in sulfur pit  headspace
  • Sulfur Recovery − SO2 in stack

Available models

Choose the Brimstone analyzer that’s right for your specific application needs – or cover the analysis requirements for the entire process from feed gas through emissions monitoring

Models Benefits
Acid Gas Analyzer • Monitors the concentration of H2S in the acid gas feed to the sulfur-recovery unit
• Provides information for feed-forward control of main air valve
Tail Gas Analyzer • Monitors the H2S, SO2, COS and CS2 concentration in the sulfur-recovery unit’s tail gas
• Provides information for feed-back control of the trim air valve
Sulfur Pit Analyzer • Monitors the H2S and SO2 concentration in the vapor head space of the sulfur pit
   o Assures that H2S concentration does not exceed the lower explosive limit for H2S
   o Provides early warning of potential smoldering fires
CEM (Continuous Emissions Monitor) • Monitors the SO2 concentration in the incinerator stack
• Ensures compliance with SO2 emission

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Look Closer

  • Brimstone™

    Closed-Coupled Process Connection

    Eliminates the need for heated sample lines.

  • Brimstone™

    Proprietary Sample Probe

    Galvanic’s proprietary probe design offers superior sulfur vapor control, eliminating plugging problems associated with heated transfer lines.

  • Brimstone™

    External-Keypad-Driven Display

    An intrinsically safe external keypad – a feature unique to Galvanic systems – provides full menu access for the high-resolution display, enabling at-a-glance status and results. View analysis results, previous calibration information, and alarms on the spot, without opening the enclosure. The analyzer can also be controlled remotely via Ethernet and a Web-based graphical user interface

  • Brimstone™

    Fiber Optics Coupling

    The Brimstone’s precision fiber optics coupling links the measurement cell and detector, eliminating alignment issues.

  • Brimstone™

    Enhanced 2048 Pixel CCD Array & Stable, Broadband Deuterium Light Source

    The Brimstone’s 2048 pixel CCD array measures absorbance over a wide range of wavelengths, eliminating the inaccuracies associated with bandpass filters. The broadband deuterium light source provides unparalleled stability.

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