SRU

SRU Overview

The Sulfur Recovery Unit (SRU) is an extremely important unit for refineries or gas plants. Without it, there would be harsh adverse environmental consequences including severe acid rain, as well as lethal ground-level sulfur dioxide toxicity. The Claus process is used to convert hydrogen sulfide to valuable elemental sulfur and to minimize the amount of sulfur compounds released to the atmosphere.

Many SRUs also now have a Tail Gas Cleanup Unit (TGCU) following the Claus process to recover even more sulfur and further minimize emissions.

The first section of sulfur recovery units (SRU) based on the Claus process consists of a burner, a thermal reactor and a waste heat boiler. It is designed to oxidize acid gasses by air. Because several oxidation reactions are reversible, as the gas is cooled in the boiler recombination reactions occur, modifying the heat exchange and gas composition. This may have a significant effect on the design of the waste heat boiler and downstream Claus reactors.

In this study, the design of thermal reactor and waste heat boiler systems is proposed by adopting a common model. The model, including a detailed kinetic scheme, considers recombination reactions in the boiler.

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Integrated Services

RCS is the premier provider of turn-key solutions and offers the following services, plus more, as part of our integrated approach.

FCCU

Fluid catalytic cracking is an important step in producing gasoline in the refining process. Catalyst particles convert thick, long-chain hydrocarbons distilled from crude oil into more profitable, shorter-chain hydrocarbons like gasoline.

SRU

Fired Equipment

RCS offers our clients true turn-key solutions for all of their fired equipment needs. We have you covered whether you require refractory repair, burner replacement, a complete retube, or anything in between.

Tanks & Terminals

A lot of midstream companies are mainly engaged in the transportation, storage and distribution of refined petroleum products and crude oil. These practices and facilities are often located in remote locations and servicing these locations can be challenging.

Core Services

As a multi-tool option for our clients, we offer the following services individually or combined on demand.

Refractory

RCS offers a full spectrum of refractory services, and our API Certified supervisors can handle all your refractory needs from demolition of existing linings and surface preparation to installation of new refractory.

Specialty Welding & Mechanical

You can count on RCS to provide true turn-key solutions for your heater, boiler, and furnace needs. Our experienced personnel, who hold “R,” “S,” and “U” stamps, can perform any necessary specialty mechanical work.

Fireproofing

For over 12 years, RCS has been installing various types of fireproofing for our clients in the refining, petrochemical, and chemical industries. Fireproofing is an essential line of defense, helping to mitigate factors that would escalate a fire, such as structural failures or overheating pressure vessels.

Fabrication

RCS presently has three fabrication facilities located in Texas and Louisiana. With over 40,000 square feet of dedicated space for this service, the priority of these shops aims to support the immediate needs of our field projects and to offer emergency response services to our clients.

Coating & Linings

With over 12 years of experience, RCS has seen a wide range of projects and various protective coatings applications. We have a broad selection of vendors and products to choose from to help with our services.

Insulation & Abatement

RCS operates a full-service insulation business with a great depth of experience throughout its organization. We also provide asbestos and lead abatements, corrosion under insulation (CUI) assessments, and create mitigation solutions to meet our customer’s individual needs.

Other

Building on a solid foundation of proven methodologies, combined with perpetual drive for excellence, RCS is committed to continue safely executing turn-key solutions through value driven, integrated specialty services that set the benchmark for customer expectations.

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