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The latest news and updates from the Principal Technology team in Dallas, Texas.

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October 25, 2022

What Is Tail Gas?

Tail Gas, or SRU Tail Gas, is the final gas stream leaving a Sulfur Recovery Unit after most of the Hydrogen Sulfide (H2S) has been removed. A typical SRU operating at design conditions can remove between 95-97% of the incoming sulfur in the feed stream. Overall recovery efficiency depends on a variety of factors. The […]

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October 25, 2022

What Is a Thermal Oxidizer?

Thermal Oxidizers are air pollution control systems used in many processes to oxidize and decompose hazardous, flammable, and volatile organic compounds (VOCs) contained in the exhaust of many manufacturing and processing plants. Oxidizing and decomposing these compounds at high temperatures before they are released into the environment helps reduce smog and air pollution and, in […]

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October 25, 2022

Sulfur vs Sulphur

The phonic spelling ‘Sulfur’ is the common spelling in North American English, while British English uses the ‘ph’ – Sulphur spelling. The French “soufre” entered English in the late 14th century, and both spellings have been used for many centuries. The International Union of Pure and Applied Chemistry (IUPAC) addressed this issue as late as […]

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October 25, 2022

What Is Sulfur Used For?

Sulfur is primarily used to produce Sulfuric Acid (H2SO4), a precursor for many other manufacturing processes and fertilizer production. It is used to manufacture cellophane, batteries, as a vulcanizing agent for rubber, as a bleaching agent in paper production, and is a common element in pharmaceutical production. It is also an elemental macronutrient for all […]

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October 25, 2022

What Is Sulfur?

Sulfur is a nonmetallic chemical element with an atomic number of 16 and is a solid at ambient temperatures. Historically called brimstone, is estimated to be the tenth (10th) most abundant element in the universe and the fifth (5th) most abundant element on earth. The earth’s crust contains approximately 0.03 to 0.1% sulfur by weight. […]

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