Upgrading mild gasification liquids to produce electrode binder pitch; [Quarterly] report, September 1--November 30, 1993
The objective of this program is to investigate the production of electrode binder pitch, valued at $250--$300/ton, from mild gasification liquids. The IGT MILDGAS process pyrolyzes coal at 1000{degree}--1500{degree}F to produce solid, gas, and liquid co-products. With Illinois coal, the 750{degree}F+ distillation residue (crude pitch) comprises 40--70% of the MILDGAS liquids, representing up to 20 wt % of maf feed coal. The largest market for pitch made from coal liquids is the aluminum industry, which uses it to make carbon anodes for electrolytic furnaces. In this project, crude pitch from the DOE-sponsored MILDGAS process research program is being modified by a flash thermocracking technique to achieve specifications typical of a binder pitch. A pitch thermocracking unit was constructed for operation at 1200{degree}--1800{degree}F. Reactor design features and process conditions are being examined to optimize the properties of the finished pitch. During the current quarter, the semi-continuous thermocracking unit was updated with several improvements: pressure transducers, a mass flow controller, and a load cell transducer were installed to improve data acquisition and control capabilities. Also, two samples produced in the previous year were evaluated by a commercial tar processing firm for mesophase content, QI particle size, and other carbon types.
- Research Organization:
- Institute of Gas Technology, Chicago, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC22-92PC92521
- OSTI ID:
- 143952
- Report Number(s):
- DOE/PC/92521-T103; ON: DE94008397
- Resource Relation:
- Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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Upgrading mild gasification liquids to produce electrode binder pitch. [Quarterly] technical report, December 1, 1993--February 28, 1994
Upgrading mild gasification liquids to produce electrode binder pitch. Technical report, December 1, 1992--February 28, 1993