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The future potential of pneumatically conveying coal through pipelines

Journal Article


Abstract


  • The dense phase and long distance pneumatic conveying of pulverized coal and the dilute phase transportation of sub 35 mm and sub 50 mm crushed coal was investigated. The results were used with a recently developed test design procedure (based on an accurate correlation analysis) and an improved mathematical model, to explore the limits and future potential of pneumatically conveying coal by predicting operating conditions for two applications (viz. 24 t/h of pulverized coal over 1.8 km and 300 t/h of sub 50 mm coal over 1150 m). The advantages of selecting stepped diameter pipelines for long distance and/or large throughput applications (e.g. to minimize pressure loss, transport velocity, system erosion and air consumption) and the importance of selecting a suitable method of air injection (e.g. to achieve high values of the mass flow rate ratio in the dense phase transport of pulverized coal) are demonstrated. A method developed recently in Australia to feed pneumatically pulverized or coarse coal into boilers or blast furnaces also is described. Some successful applications are noted. (A)

Publication Date


  • 1990

Citation


  • Wypych, P. W., Kennedy, O. C., & Arnold, P. C. (1990). The future potential of pneumatically conveying coal through pipelines. BULK SOLIDS HANDLING, 10(4 Oct.), 421-427.

Scopus Eid


  • 2-s2.0-0025056195

Web Of Science Accession Number


Start Page


  • 421

End Page


  • 427

Volume


  • 10

Issue


  • 4 Oct.

Abstract


  • The dense phase and long distance pneumatic conveying of pulverized coal and the dilute phase transportation of sub 35 mm and sub 50 mm crushed coal was investigated. The results were used with a recently developed test design procedure (based on an accurate correlation analysis) and an improved mathematical model, to explore the limits and future potential of pneumatically conveying coal by predicting operating conditions for two applications (viz. 24 t/h of pulverized coal over 1.8 km and 300 t/h of sub 50 mm coal over 1150 m). The advantages of selecting stepped diameter pipelines for long distance and/or large throughput applications (e.g. to minimize pressure loss, transport velocity, system erosion and air consumption) and the importance of selecting a suitable method of air injection (e.g. to achieve high values of the mass flow rate ratio in the dense phase transport of pulverized coal) are demonstrated. A method developed recently in Australia to feed pneumatically pulverized or coarse coal into boilers or blast furnaces also is described. Some successful applications are noted. (A)

Publication Date


  • 1990

Citation


  • Wypych, P. W., Kennedy, O. C., & Arnold, P. C. (1990). The future potential of pneumatically conveying coal through pipelines. BULK SOLIDS HANDLING, 10(4 Oct.), 421-427.

Scopus Eid


  • 2-s2.0-0025056195

Web Of Science Accession Number


Start Page


  • 421

End Page


  • 427

Volume


  • 10

Issue


  • 4 Oct.