Coal-water slurry: A status report

Rolf K. Manfred

Energy, 1986, vol. 11, issue 11, 1157-1162

Abstract: During the years of oil shortage and rapidly increasing oil prices, the need to decrease dependence on oil-fired utility boilers became an urgent concern. The alternatives were to: 1.(1) build new coal-fired stations;2.(2) modify oil-fired boilers to fire pulverized coal;3.(3) modify oil-fired boilers to fire coal slurry;4.(4) modify boilers to fire deeply cleaned, finely pulverized coal; or5.(5) fire coal-derived liquids. Of these alternatives, the use of the coal-water slurry (CWS) promised a combination of advantages: near-term readiness, low-fuel costs compared to oil, moderate conversion costs, and low technical/economic risks. The development work sponsored and peformed since 1979 with coal-water slurries (70 wt % coal, 29 wt % water, 1 wt % additives) has confirmed these expectations. Fuel quality guidelines and test standards have been established, production of CWS in 40,000–150,000 ton/yr pilot plants has been demonstrated, utility-scale burner systems (100 MBtu/hr) have been demonstrated, and the effects and costs of modifying typical utility boilers have been predicted. Limited field handling, storage, and use tests were completed successfully.

Date: 1986
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:11:y:1986:i:11:p:1157-1162

DOI: 10.1016/0360-5442(86)90052-6

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