Although STEBBINS prides itself in serving the greater industrial and commercial market, our main sectors include pulp and paper, chemical, metals and minerals, and power. For more information regarding our services, please visit the SERVICES section.
Since our founding, we have worked closely with the pulp and paper industry, supplying it with materials, engineering, and installation know-how. Since the mid-1930’s, we’ve had the expertise to engineer and install linings and build reinforced concrete structures to meet the industry’s demands for economical chemical-resistant linings and tankage for handling a wide range of stock and process conditions. Some of our principal contributions are the now known as the widely used High Density Neckdown and the self-relieving cover design. Today in North America, with very few exceptions, the chemical-resistant brick linings for sulphite digesters are installed with our materials.
Since the late 1930’s, our materials and lining techniques have been used in the chemical process industry. However, it was not until the early 1960’s that significant diversification into this field occurred. This was due to the development of our proprietary materials and lining techniques, spearheaded by our experience, and our ability to install pre-stressed brick linings in sulphite pulp digesters and other pressure vessels. These linings involve the engineering, supply and installation of ceramic and/or carbon brick linings which remain in compression even when the vessel is operating under peak temperature and pressure conditions. Our engineered turnkey-installed linings have been successful at replacing expensive high alloy vessels.
Since the early 1970’s, STEBBINS’ reinforced concrete Semplate construction and Semplate lined mild steel have been used in first generation wet Flue Gas Desulphurization (FGD) units. Initially Semplate FGD units replaced plastic, resinous and rubber lining, and more recently expensive High Nickel Alloy. We currently have six wet FGD units operational from 1984, and a reference listing topping 50,000MW of installations.
Our wet FGD vessels have withstood fires that have decommissioned other units; can manage free chloride levels that the highest-grade Nickel alloys cannot; provide durability against mechanical/physical abuse, and allow heavy equipment entrance for cleanout; and support equipment and building loads reducing CapEx and plant footprint.
STEBBINS also builds and lines other plant equipment from simple sumps/trenches to agitated slurry vessels. Similar equipment in water/wastewater and coal preparation plants have been built, including wet/dry silos to resist abrasion and corrosion. Based on this history and the above accomplishments and features, STEBBINS designed and built the amine SO2/CO2 scrubbers at the SaskPower BD3 Carbon Capture and Storage (CCS) project. These units are designed for very high free Fluorides as well as large operational loads due to the internals. We are currently working on several projects that will support Gas to Gas Heat Exchanger System (GGH) and/or chimneys on STEBBINS’ structural vessels.
STEBBINS has provided design and installation of lining systems and vessel construction for a variety of processes since the 1940’s. We completed many of the projects with R&D for testing of materials in novel and unproven process conditions. Many processes involve elevated pressure and temperature at extremely corrosive conditions. A wide range of precious/base metal and mineral refiners use STEBBINS’ engineered solutions to prevent corrosion in their critical process equipment. Due to our design engineering strengths and construction expertise, we can pair this with our 135+ year corrosion engineering experience to develop cost saving methods for agitated vessels and elevated thickener/clarifiers, as well as pressure vessel manufacturing details that compliment the masonry and membrane linings STEBBINS uses.
We are synonymous with a small specialized EPC(M) company that can mange all aspects of these projects, including foundation, specialty internals/mechanisms, alloy/mild steel fabrications, logistics and of course installation of the internal lining. We have completed projects of this nature in various locations of the world, including very remote areas.