Gasification Technologies - A Primer for Engineers and Techs by J. Rezaiyan, N. Cheremisinoff

By J. Rezaiyan, N. Cheremisinoff

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Source: Adapted from various sources: M. A. , Chemistry of Coal Utilization, 2nd Supplementary Volume, WileyInterscience, 1981; Cheremisinoff, N, and P. , 1984; Joaquin, R. html). 30. htm. 31. html. 32. Source: EPA 832-f-99-068, September 1999. 33. htm. 34. Wood Handbook, Forest Products Laboratory, 1999. 35. Gray, D. , “Opportunities for Petroleum Coke Gasification Under Tighter Sulfur Limits for Transportation Fuels,” Paper presented at the 2000 Gasification Technologies Conference, San Francisco, CA, October 8–11, 2000.

Html. pdf. 29 Source: Adapted from various sources: M. A. , Chemistry of Coal Utilization, 2nd Supplementary Volume, Wiley-Interscience, 1981; Cheremisinoff, N, and P. , 1984; Joaquin, R. html). 2 Coal gasification stages. sequence for petroleum coke and heavy oils and tars are somewhat different. Petroleum coke has no or very little volatile content; heavy oils and tars consist primarily of volatile matter. Pyrolysis processes were discussed in previous sections. Suffice it to say that if the heating rate is fast, a solid particle is heated to high temperatures in a short period of time, and then the gas-gas phase and solid-gas phase gasification reactions take place simultaneously.

Syngas saturated with water is further cooled to 150 to 200°C and recycled to the quench sprays within the gasifier. The bottom part of the gasifier consists of a quench bath that cools and solidifies the slag, which is then removed in a granular form. The only Noell gasifiers in commercial operation are at Schwarze Pumpe (Germany) and the new BASF Seal Sands located in Middlesbrough in the UK. The BBP Research and Development center based at Freiberg (Germany) comprises two facilities with capacities of 5 and 10 MW.

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