scholarly journals Development of fast fluid bed coal gasification process. Phase I, Volume 1. Final report, July 1976-April 1979

1979 ◽  
Keyword(s):  
Phase I ◽  
Coal Gasification ◽  
Final Report ◽  
Gasification Process ◽  
Fluid Bed

Coal Gasification Characteristics in a 2MWth Second-Generation PFB Gasifier

2005 ◽  
Author(s):  
Xiao Rui ◽  
Baosheng Jin ◽  
Yunquan Xiong ◽  
Yufeng Duan ◽  
Zhaoping Zhong ◽  
...  
Keyword(s):  
Coal Gasification ◽  
Pilot Scale ◽  
Test Results ◽  
Fuel Gas ◽  
Gasification Process ◽  
Feasibility Research ◽  
Fluid Bed ◽  
Long Time ◽  
Run Test ◽  
Gasification Temperature

Coal gasification process and equipment feasibility research were carried out in a 2 MW thermal input pressurized spout-fluid bed pilot-scale gasifier and a long-time-run test was performed to study the effects of operating parameters on coal partial gasification behaviors. The test results have demonstrated the feasibility of the gasifier to provide suitable fuel gas and residual char for downstream system of 2G PFBC-CC. The concentration of methane decreased at higher gasification temperature due to the secondary cracking of methane while the carbon conversion increased, and the concentration of hydrogen increased with an increase of steam flow rate. The main experimental results were compared with those of pilot-scale facilities in the world.

scholarly journals A Modified Gibbs Free Energy Minimisation Model for Fluid Bed Coal Gasification

2015 ◽  
Vol 36 (1) ◽  
pp. 73-87 ◽  
Author(s):  
Marek Ściążko ◽  
Leszek Stępień
Keyword(s):  
Large Scale ◽  
Coal Gasification ◽  
Heterogeneous Reactions ◽  
Boudouard Reaction ◽  
Quasi Equilibrium ◽  
Gaseous Species ◽  
Gasification Process ◽  
Energy Minimisation ◽  
Inorganic Matter ◽  
Fluid Bed

Abstract A modified approach to equilibrium modelling of coal gasification is presented, based on global thermodynamic analysis of both homogeneous and heterogeneous reactions occurring during a gasification process conducted in a circulating fluid bed reactor. The model is based on large-scale experiments (ca. 200 kg/h) with air used as a gasification agent and introduces empirical modifications governing the quasi-equilibrium state of two reactions: water-gas shift and Boudouard reaction. The model predicts the formation of the eight key gaseous species: CO, CO2, H2O, H2, H2S, N2, COS and CH4, volatile hydrocarbons represented by propane and benzene, tar represented by naphthalene, and char containing the five elements C, H, O, N, S and inorganic matter.

Sign in / Sign up

Export Citation Format

Share Document