TITLE: Investigation of Kinetics and Reaction Engineering for Fisher-Tropsch Synthesis of 1-Alkenes from C4 to C20.

AUTHOR: J. Gaube;   G. Hochstadt;   B. Schliebs;   G. Sudheimer.

INST.  AUTHOR: Technische Hochschule, Darmstadt (Germany, F.R.). Inst. fuer Chemie.

SPONSOR: National Aeronautics and Space Administration, Washington, DC.

LANGUAGE: German

PUB.  TYPE: Technical Report

PUB.  COUNTRY: Germany Federal Republic

SOURCE: National Aeronautics and Space Administration (NASA) [NASAE] , Aug 82,  125p.

ABSTRACT:

In order to calculate the selectivity of the synthesis, the kinetics of the main and secondary reactions were studied. Tests were conducted in fixed bed and fluidized bed reactors in the presence of iron catalysts containing K2C03. The conclusions concerning the technical synthesis of 1-alkynes are: the choice of the correct catalyst is of prime importance; a precipitated iron catalyst with 2% in weight of K2C03 produces hydrocarbons containing more than 75% of 1-alkynes; the fluidized bed reactor is well adapted to work with a high carbon monoxide pressure. The extraction of the elaborated hydrocarbons in the fluidized phase reduces the polymerization process to higher degree alkynes. The optimized combination of pressure, ratio of H2 and C0 pressures, and extraction rate must be calculated. The synthesis of ethylene starting from 1-alkynes seems to be an interesting process.

REPORT  NUMBER: BMFT-FB-T-82-148;   ISSN-0340-7608