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Sulfur Recovery Unit Pyrometer

Brand: Williamson Corporation

In a petrochemical refinery or natural gas processing plant, sulfur is extracted from the crude oil or natural gas product stream as amine gas, sour water stripper, sulfuric acid and hydrochloric acid. 

The sulfur is then recovered in the sulfur plant using a thermal reactor called a Sulfur Recovery Unit (SRU), also known as a Claus reactor. 

Sulfur is recovered more efficiently at high temperatures that approach the operational limit of the refractory material, and variations in process and oxygen injection flow rates introduce variable process control demands. 

As a result, temperature control is critically important for operational effectiveness, reactor longevity and for human safety. 

The Williamson SRU class pyrometers are designed specifically for this demanding application and eliminate many of the common problems associated with other types of temperature measurement devices. 
  • Infrared technology avoids contact with corrosive gases 
  • Compact fiber-optic configuration eliminates bulk and active cooling 
  • Warm flange mounting reduces or eliminates sulfur deposition within the optical path 
  • Built-in human interface can be mounted at a convenient location 
  • Solid state electronics eliminates moving parts and assures long-term calibration accuracy 
  • Thoughtful wavelength selection assures measure of only wall, only gas, or a blend of both 
  • Engineered stainless steel accessories permit simple installation and easy start up

Specifications

Accuracy

  • Above 600° F / 315° C: 0.25 % of Reading or 3.6° F / 2° C whichever is greater

Input Power

  • 24 Vdc (300 mA)

Repeatability

  • Better than 1° C Above 600° F / 315° C

Response Time

  • Adjustable 5 ms to 240 seconds

Output

  • Analog: 4-20 mA or 0-20 mA
  • Sensor: SPST Relay Rated 2 A @ 24 V

Digital Interface

  • Sensor: Bi-Directional RS-485 (RS-232 with Converter)

Human Interface

  • Built-in Human Interface

Certifications & Approvals

  • ATEX
  • IECEx
  • CE

Ambient Temperature

  • 0° to 140° F (17° to 60° C)

Environmental Protection

  • NEMA 4 X
  • NEMA 7/9 (IP66)

Dimensions

  • 7.6” x 5.5” x 5.5” (194 mm x 140 mm x 140 mm)

Weight

  • 6.8 lbs (3 kg)

Documentation

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