Energy generators and systems, namely, carbonaceous material gasification systems and subsystems, including converters, turbines, holding tanks, control devices, heat recovery devices, purification devices, gas refinement devices, slag handling devices, apparatuses, units and part thereof for converting coal and/or waste of various forms, including solid and liquid materials, both hazardous and non-hazardous, into steam, chemical feed stock, heat, electricity, slag and gas, including carbon monoxide and hydrogen