Experimental Study on Rich Oxygen Gasification and Ash Character in Entrainedflow Coal Gasifier

Abstract:

Entrainedflow Gasifier with Large Capacity and Slagging Tap is Usually Use for IGCC and Largescale Chemical Industrial Factory. while, there are 57% of Reserved Coal is Highfusion Temperature Coal, which Cannot Satisfy the Requirement of Thegasification for Slagging Tap. . Therefore, Two Typical Kinds of Chinese Coals Wereselected and Gasified in a Lab-Scale down-Flow Gasifier with Feeding Rate Ataround 1kg/h. the Results Show that along with the Increasing Temperature, Thecarbon Conversion and Cold Gas Efficiency will be Increased Quickly Whentemperature is below 1400°C, and then Increased Slowly when above 1400°C. the Optimum O/C Molarratio is around 1:1, the Cold Gas Efficiency and Carbon Conversion under Thisexperimental Condition (1300-1400°C) are Separately 31% and 80%. at the Optimumgasification Condition, Increasing the Residence Time will also Increase Thecoal Gas Concentration, Carbon Conversion and Cold Gas Efficiency. under Thisexperimental Condition, the Best Residence Time is at Least 1.5~2.0s.

• Periodical: Advanced Materials Research (Volumes 860-863)
• Pages: 1405-1411
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.860-863.1405
• Online since: December 2013
• Authors: Bai Qian Dai, Xiao Jiang Wu, Tong Lou, Zhong Xiao Zhang*
• Keywords: Entrained Flow Bed, High Ash Slag Fusibility Coal, Richoxygen Gasification

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