MECS® Sulfur Burning Acid Plant Process

MECS® Sulfur Burning Acid Plant Process

MECS® sulfuric acid plant technology, engineering, equipment and services set the standard for performance, efficiency, energy recovery, and emissions reduction. We support applications in the fertilizer, non-ferrous metals, refining, power, and coal gasification industries.

Our expert engineers leverage over two centuries of combined MECS® and DuPont experience, acquired through the design of over 1000 acid plants worldwide and the operation of 10 DuPont sulfuric acid plants in North America. Our experts can design a cutting-edge sulfur burning plant for your organization, to help you meet stringent pollution requirements while increasing your efficiency and cost-effectiveness. Our processes and plant designs feature breakthrough MECS® technologies, many of which have revolutionized performance, cost controls, and quality for the sulfuric acid industry.

MECS® Sulfur Burning Process Description

Ambient air is drawn through a high-efficiency MECS® ZeCor® Drying Tower  by the main compressor to remove moisture. A MECS® Brink® Mist Eliminator provides efficient acid mist removal, which is critical for the protection of the main compressor. The compressed dry gas enters the sulfur burner, where molten sulfur is burned in the presence of the dry air to produce high sulfur dioxide (SO2) gas strength. The hot SO2 combustion gas is then cooled in a steam boiler to the proper temperature for introduction to the converter system.

In the contact section of the plant, the gas flows through three passes of MECS® GEAR™ and Cesium Catalyst , as well as their respective cooling equipment, and is then absorbed with 98% sulfuric acid (H2SO4) in the Interpass absorption tower. The lean SO2 gas flows through another Brink® Mist Eliminator to remove fine mist particles, protecting downstream equipment. The clean gas is then reheated and enters the converter to complete the fourth conversion pass of SO2 to SO3 using MECS® Super Cesium Catalyst SCX-2000, to achieve the highest possible conversion. The resulting SO3 is absorbed in 98% H2SO4 in the ZeCor® Final Absorbing Tower. Brink® Mist Eliminators are installed in the final tower to ensure the stack gas will meet acid mist environmental regulations.

A Commitment to Innovation and Quality

Our focus and commitment to technology development are primary drivers for our business. MECS® design and technical service offerings are supported by a team of expert chemical and mechanical engineers, as well as state-of-the-art Research and Development facilities and staff. We are focused on continuing to achieve new performance gains, and to solve crucial plant operations bottlenecks. Our expert engineers can custom-design your sulfur burning acid plant to meet your specific application and environmental requirements. Our innovative solutions deliver consistently superior quality, emissions control, energy recovery, and efficiency, using technologies that typically reduce maintenance and lifecycle costs.