Units

Amine Treating and Regeneration Units are the cornerstone to the successful operation of any sulfur facility. From meeting your treated gas and liquids spec - to providing stable and consistent acid gas feed to your Sulfur Recovery Unit. Reliable ARU performance starts with engineering and equipment designed to meet the rigors of today's process plants. Our design team has the know-how to design your Amine Unit to improve your plant's reliability and uptime performance.

For very low-capacity H2S bearing streams, process vent streams, and direct gas treating including biogas processes, anaerobic digestion, and landfill gas that cannot be efficiently or cost-effectively treated through traditional amine and sulfur recovery units, H2S scavengers can be an excellent option. While most scavenger technologies require increased operating costs for reagent replacement and disposal, Iron Sponge, fixed bed treating, and absorbent systems offer low CapEx investment.

The nature of the Modified-Claus process requires the combustion of a portion of the incoming Acid Gas Feed along with all ammonia and hydrocarbons present in the feed. This process requires oxygen from combustion air, and nitrogen in the air comes along for the ride.

An easy way to improve unit capacity is to remove nitrogen from the unit by enriching the combustion air with pure oxygen.

Changing domestic crude feedstocks and increasingly stringent state and federal environmental regulations have raised the demand for smaller-capacity Sulfur Recovery Units in a broader range of plants.

PTI specializes in modular units from under 2 to 50 LTPD, affording us unique experience and capabilities to address specific issues of small-capacity sulfur recovery, including Heat Conservation, Temperature Management, and Equipment Design to meet the particular needs of small-capacity operations while reducing overall cost.

Sour Water Processing and Sour Water Strippers provide the necessary treatment of refinery and processing plant water wash and wastewater streams to return to the process or to be safely disposed of through traditional wastewater treatment plants. Principal Technology's team can provide the technical expertise to improve your Sour Water operations, from operations support, training, and performance studies to equipment upgrades or complete turn-key unit construction.

The sulfur team at Principal Technology has over three decades of design, fabrication, and operations support for all aspects of traditional modified-Claus Sulfur Recovery Units including modular and stick-built fabrication and construction, tail gas treating, thermal oxidizers, degassing, and storage and handling facilities. Our SRU portfolio includes over 2,000 LTPD combined nameplate capacity with over 11 Million Long Tons of Sulfur Recovered to date.

Tail Gas Units significantly increase in the overall recovery efficiency of your Sulfur Plant operations. The most common TGUs are either amine-based treating systems that recycle unrecovered H2S back to your SRU feed or Thermal Oxidizers with Caustic Wash systems that remove any residual sulfur species using caustic solutions that once treated can be safely sent to your wastewater system.

Contact our team today to discuss your operations, upgrade, revamp, or green field TGU project.

Thermal Oxidizers and Incinerators are a crucial last step in many facilities. The PTI team provides the know-how and experience from process engineering to determine the residence time and temperature required, refractory design, burner management and safety control systems, to designing for your fabrication and constructibility challenges.  

Whether it is a small, vertical natural draft system or a large capacity forced draft unit with integral waste heat recovery, contact us today to discuss your project.