Pulp & Paper Storage Tanks & Pressure Vessels
The pulp and paper industry produces a wide variety of consumer and packaging products made from wood, recycled paper, and containerboard. The manufacturing process to convert these raw materials into pulp for use in final products is known as The Kraft Process, a chemical process that dissolves lignin and separates the cellulose in order to be refined into pulp. Well-known products made from pulp include printer paper, shipping boxes and other packaging, as well as consumer goods like toilet paper, and paper towels.
Types of Tanks & Vessels
In the pulp & paper industry, meticulous engineering and safe construction are non-negotiables. Since 1972, Tate Metalworks has been supplying pulp and paper mills with reliable, high-quality process and storage tanks, pressure vessels, and custom fabricated solutions to meet the unique demands of the industry as well as its environmental standards.
Our vessels support multiple components of The Kraft Process:
Cooking:
Wood chips are cooked in a digester with white liquor. This dissolves the lignin holding the wood fiber together, releasing the cellulose fibers for pulp. Tanks used for this include:
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Pulp Washing and Bleaching:
The pulp is washed to remove any spent cooking chemicals and dissolved lignin, otherwise known as Black Liquor, then bleached to turn it white. These specialized vessels include:
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During the washing cycle, Black liquor is separated from the pulp. The Black Liquor is utilized as a fuel source for the mill's recovery boiler. It must first be concentrated to 55-65% before it is ready for combustion. The equipment types we fabricate and erect on site for this process and storage consist of:
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Causticizing:
Black liquor smelt, collected from the recovery boiler, is then converted back into white liquor to be used again in the cooking stage through the causticizing process. This requires:
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Precision Engineering for Safety & Quality
We understand the importance of safety and compliance for pulp and paper mills. Our API 650, API 620 Storage Tanks and ASME Section VIII Pressure Vessels are fabricated, tested & erected to your specifications. With our quality standards and non destructive examination, we remove the chances of unexpected leaks to help maximize efficiency in your operations.
Here’s what you can expect from our solutions:
- Custom-tailored tanks and vessels to meet complex specifications
- Reliability with high quality, corrosion-resistant materials
- Built to store and process the temperatures & pressures your specification demands
- Adherence to the standards of API and ASME regulations
- Best-in-class engineering for efficient chemical processing
Your Partner in the Pulp & Paper Industry
Tate Metalworks excels in technical and heavy industrial construction, delivering projects that surpass standard requirements. Our expertise in design, welding, fabrication, project controls, and heavy-lift engineering ensures your project's success.
Get started by requesting a proposal today. Tell us about your project and any questions you have. We’ll set up time to have an in-depth discussion or a lunch-and-learn with your team, then strive to deliver a customized proposal within 2–3 weeks.
Tate serves clients Nationwide, from our Headquarters in the Upstate of South Carolina.
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