Fischer-tropsch synthesis in supercritical fluids. Quarterly technical progress report, April 1, 1993--June 30, 1993
We have completed modifications of the Taylor Dispersion Apparatus so that propane can be used as a solvent. Problems were encountered initially compressing propane to the necessary pressures because of cavitation in the liquid pump. This problem was overcome by placing a check valve in the line after the pump and pressures of 2500 psi have been achieved. The system has been pressure tested by using a soap solution on exposed joints and performing a mass balance (leak test). The mass balance was made by reading the volumetric flow rate of liquid in the syringe pump and converting this to expected gas flow rate. The liquid was then vaporized and a dry gas meter measured the amount of gas at the exit of the apparatus. The expected and measured gas flow rates were in excellent agreement, indicating that there are no significant leaks in the system. Presently, we are having problems with the use of UV detection for the dim using compounds. The detector is successfully auto-zeroing with a blank cell and with Co{sub 2}. With the use of instrument grade propane, however, the detector is unable to auto-zero because of absorption of unknown impurity. We believe this problem is caused by a sulfur compound in the propane gas cylinder and we plan to install an active carbon guard bed to remove a sulfur containing compounds.
- Research Organization:
- Texas A and M Univ., College Station, TX (United States). Dept. of Chemical Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-92PC92545
- OSTI ID:
- 10181378
- Report Number(s):
- DOE/PC/92545-3; ON: DE93041284
- Resource Relation:
- Other Information: PBD: 29 Jul 1993
- Country of Publication:
- United States
- Language:
- English
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