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The catalytic coprocessing of a demineralized Catalan lignite under a hydrogen atmosphere was studied. Two vacuum residues with different asphaltene contents were tested as solvents. The experimental results show that the residue with the lower content of both asphaltenes and aromatic oils yields poor coal conversion and oil production as well as low-quality products. The catalysts used do not...
The influence of initial pressure of hydrogen on the catalytic coprocessing of Bergueda lignite with a vacuum residue of petroleum was studied, using an Fe 2 O 3 catalyst. Coal conversion increased with initial hydrogen pressure up to 10 MPa, but there was no significant increase beyond this value. However, oil conversion increased with pressure up to 12 MPa. On the other hand,...
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