Process feasibility study in support of silicon material task 1. Quarterly technical progress report (XIII), September--December 1978

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Major activities during this reporting period centered on process system properties, chemical engineering and economic analyses. Analyses of process system properties was continued for materials involved in the alternate processes under consideration for solar cell grade silicon. The following property data are reported for trichlorosilane: critical constants, vapor pressure, heat of vaporization, gas heat capacity, liquid heat capacity, density, surface tension, viscosity, thermal conductivity, heat of formation of Gibb's free energy of formation. Major efforts were expended on completion of the preliminary economic analysis of the UCC Silane Process (Union Carbide Corporation Silane Process). Cost, sensitivity and profitability analysis results ... continued below

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Pages: 69

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Li, K.Y.; Hansen, K.C. & Yaws, C.L. December 1, 1978.

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Description

Major activities during this reporting period centered on process system properties, chemical engineering and economic analyses. Analyses of process system properties was continued for materials involved in the alternate processes under consideration for solar cell grade silicon. The following property data are reported for trichlorosilane: critical constants, vapor pressure, heat of vaporization, gas heat capacity, liquid heat capacity, density, surface tension, viscosity, thermal conductivity, heat of formation of Gibb's free energy of formation. Major efforts were expended on completion of the preliminary economic analysis of the UCC Silane Process (Union Carbide Corporation Silane Process). Cost, sensitivity and profitability analysis results are presented based on a preliminary process design of a plant to produce 1,000 metric tons/year of silicon by the revised process. Fixed capital investment estimate for the plant is $9.19 million (1975 dollars). Product cost without profit is 6.90 $/kg of silicon (1975 dollars). The profitability results indicate a sales price of 9.88 $/kg of silicon (1975 dollars) at a 20% DCF return on investment after taxes. Major chemical engineering activities were started on the modified BCL process which includes additional data and engineering modification. The preliminary process design was initiated including specific base case conditions, reaction chemistry, process flow diagram and material balance for a plant to produce 1,000 Mt/yr of solar cell grade silicon.

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Pages: 69

Notes

Dep. NTIS, PC A04/MF A01.

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  • Report No.: DOE/JPL/954343-13
  • Grant Number: NAS-7-100-954343
  • DOI: 10.2172/6114010 | External Link
  • Office of Scientific & Technical Information Report Number: 6114010
  • Archival Resource Key: ark:/67531/metadc1109916

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 1, 1978

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

Description Last Updated

  • March 27, 2018, 7:11 p.m.

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Li, K.Y.; Hansen, K.C. & Yaws, C.L. Process feasibility study in support of silicon material task 1. Quarterly technical progress report (XIII), September--December 1978, report, December 1, 1978; United States. (digital.library.unt.edu/ark:/67531/metadc1109916/: accessed April 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.