
Page 
Summary 
1 
Introduction 
1 

Thermodynamic
equilibrium considerations 
3 

Chemical
and free energy change considerations 
4 
Experimental
procedure 
7 

Description
of apparatus: Reactor 
7 

Composition
of simulated gas 
9 

Composition
of commercial producer gas 
9 

Sampling
procedure and analysis 
11 


Solids
blender 
11 


Solids
analyzer 
12 


Solids
sampler 
12 


Comparison
of chemical and indirect method of analysis 
12 


Gas
analysis 
13 

Operational
limits of the pilot plant 
14 

Operational
procedures and variations 
14 


Preparation
of solids 
14 


Operational
variables during fluidizedbed tests 
14 


Operational
variables during freefall tests 
14 
Discussion
of results 
15 

Fluidizedbed
experiments 
15 


Effect
of composition of magnetite on conversion 
15 


Effect
of bed height on conversion 
16 


Effect
of temperature on conversion 
19 


Effect
of pressure on conversion 
19 


Effect
of gastosolids ratio on conversion 
21 


Utilization
of methane during reduction 
23 


Effect
of reducing gas on conversion 
24 


Effect
of oxidizing gas on conversion 
25 


Effect
of temperature on hydrogen purity 
27 


Carburization 
28 


Attrition
of solids 
29 


Process
requirements 
30 

Solids
freefall experiments 
30 


Effect
of gas velocity on conversion 
30 


Effect
of pressure on conversion 
30 


Effect
of gas to solids ratio on conversion 
34 
Conclusions 
37 
Appendix 
40 

Calculations
for the theoretical heat requirements 
40 

Calculations
for the determination of the percent reduction of the solids and the
free carbon content of the solids 
45 

Calculations
for the determination of stoichiometric gas and solids flow for reduction
and oxidation 
47 

Calculations
for process requirements 
49 