• Products
    • Rotary Pressure Filter
    • Continuous-Indexing Vacuum Belt Filter
    • Rubber Belt Filter
    • Candle Filters
    • Pressure Plate Filters
    • Autopress
    • Turnkey Engineered Packages
    • Continuous, Large Scale Processing Solutions For Hemp & Cannabis
    • Toll Manufacturers
  • Parts, Service, & Rentals
    • Rental Filters
    • Spare Parts & Service
    • Testing
  • Articles/FAQ
    • Newsletters
    • Articles
    • FAQ
  • News
  • Contact
  • Application Data Sheet

BHS-Sonthofen Inc. • 14300 South Lakes Drive, Charlotte, North Carolina 28273-6794 • Phone: 704-845-1190 • Fax: 704-845-1902

BHS BLOG
BHS Filtration BHS Filtration
  • Products
    • Rotary Pressure Filter
    • Continuous-Indexing Vacuum Belt Filter
    • Rubber Belt Filter
    • Candle Filters
    • Pressure Plate Filters
    • Autopress
    • Turnkey Engineered Packages
    • Continuous, Large Scale Processing Solutions For Hemp & Cannabis
    • Toll Manufacturers
  • Parts, Service, & Rentals
    • Rental Filters
    • Spare Parts & Service
    • Testing
  • Articles/FAQ
    • Newsletters
    • Articles
    • FAQ
  • News
  • Contact
  • Application Data Sheet

Comparison of Gypsum Dewatering Technologies at Flue Gas Desulfurization Plants

Comparison of Gypsum Dewatering Technologies at Flue Gas Desulfurization Plants

Abstract: Recovering gypsum from flue gas desulfurization (FGD) plants is becoming more important as the technical feasibility of substituting FGD gypsum for natural gypsum in traditional applications such as wall board, cement and soil conditioners has been demonstrated. It is estimated that there are over 200 new coal-fired plants and over 1000 upgrades of existing coal-fired plants in various stages around the world. An important aspect of gypsum recovery is the solid-liquid separation technology that is used.

This paper discusses three technologies that are used by coal-fired power plants to dewater and dry gypsum. These are centrifuges, continuous vacuum belt filters (CBF) and continuous-indexing vacuum belt filters (CI-BF) and rotary vacuum filters. Each technology is examined for their ability to filter, wash and dry the gypsum to meet the moisture content for salable FGD gypsum as compared with natural gypsum. The paper continues with an analysis of the utilities required for each technology including electricity and water usage and the ability to reuse water in the process. Finally, maintenance, reliability, uptime and redundancy requirements are discussed as well as general overview of instrumentation and PLC controls and communication is covered.

The paper concludes by describing the important information that power plant engineers should review before deciding on a solid-liquid separation technology. These parameters include type of FGD process, type of coal, limestone purity, water analysis, operating data, composition of the gypsum slurry and other upstream or downstream equipment. Finally, to meet the plants overall environmental objectives, a unique approach is described that takes the wastewater treatment sludge and incorporates it with the gypsum for a cement product.

For the PDF version of this document, click here.

Share

Leave a Reply

Your email is safe with us.
Cancel Reply

Contact Us

Send us a note and we'll be there to respond.

Send Message

© 2023 —BHS SONTHOFEN. All Rights Reserved.
BHS-Sonthofen Inc. • 14300 South Lakes Drive, Charlotte, North Carolina 28273-6794 • Phone: 704-845-1190 • Fax: 704-845-1902

  • BHS-Sonthofen GmbH
  • Home
  • Contact BHS
  • Legal Information