TITLE: Fischer-Tropsch Synthesis from a Low HH sub 2 :CO Gas in a Dry Fluidized-Bed System. Volume 1. Project Summary. Final Technical Report, October 1, 1986.

AUTHOR: Y. A. Liu;   A. M. Squires.

INST.  AUTHOR: Virginia Polytechnic Inst. and State Univ., Blacksburg. Dept. of Chemical Engineering.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  1 Oct 86,  41p.

NTIS ORDER NO.: DE87000286/INW

ABSTRACT:

The objective of this project is to experimentally develop and demonstrate a dry fluidized-bed reactor system (called ''heat tray'') for Fischer-Tropsch synthesis from a low H sub 2 :CO gas. The reactor involves conducting catalytic synthesis reactions primarily in a horizontal conveying zone, in which fine particles of an iron catalyst are carried in a relatively dilute suspension by a large flow of reacting gas. A secondary reaction zone, in the form of a shallow fluidized bed of catalyst particles, is situated beneath the primary reaction zone. This shallow bed also has immersed horizontal heat-transfer tubes for removing reaction heat. A major thrust of the new reactor development is to prevent carbon deposits from forming on the iron catalyst, which cause deactivation and physical degradation. This is to be achieved by conducting the Fischer-Tropsch synthesis in an unsteady-state mode, particularly by alternately exposing the iron catalyst to a large flow of low H sub 2 :CO gas for a short period of time and to a small flow of H sub 2 -rich gas for a long period of time. The project has been carried out in two key tasks: (1) development of a microreactor system for unsteady-state Fischer-Tropsch synthesis, simulating the life history of an iron catalyst particle in a ''heat-tray'' reactor; and (2) supporting fluidization studies. The present Volume I summarizes the key conclusions and recommendations from this project, and the accompanying Volumes II and III describes the details of experimental investigations and results. 12 refs., 8 figs., 2 tabs. (ERA citation 12:010713)

REPORT  NUMBER: DOE/PC/50791-T5

CONTRACT  NUMBER: FG22-82PC50791