A Kentucky oil shale char was gasified in a fluid bed reactor. The effects of mean solid residence time (MSRT), bed temperature, and steam and CO2 partial pressure were studied. Carbon reactions during gasification were found to be dependent on all three parameters. The steam/char reaction was the d
Prediction of CO2 gasification rate of char in fluidized bed gasifier
โ Scribed by Tadafumi Adschiri; Tohru Shiraha; Toshinori Kojima; Takehiko Furusawa
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 690 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0016-2361
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โฆ Synopsis
Chars from 14 different parent coals were produced in fluidized bed and the initial porosity and surface area were correlated with carbon content in the parent coals. Combination of previous results with the present experimental results led to the description of change in carbon dioxide gasification rate with increased conversion. The values calculated by the proposed equation were compared not only with the present data but also with the gasification rates reported by previous investigators.
Carbon dioxide gasification rates of chars can be estimated by this equation.
๐ SIMILAR VOLUMES
A steady-state numerical simulation model, which takes account of hydrodynamics, mass transfer, heat transfer and reactions, was proposed for the grid zone of a jetting fluidized bed coal gasifier with a conical distributor. Temperatures of theparticle and gas in the jet, compositions in the jet and
CO, gasification of a gas-coal char catalysed by Na,C03 and K&O, was studied using a fixed-bed reactor at 79S102o"C and 0.2 MPa. The gasification rate increased with increasing temperature. With increasing addition of Na2C03 in the range 9-25 wt% and K&O, in the range 5-20 wt% the rate increased sha